Agenda packet — Dublin City Council, October 3, 2023 (part 1 of 5)

October 03, 2023 Dublin City Council Regular Meeting Agenda 1 COUNCILMEMBERS City Council Chamber
Melissa Hernandez, Mayor Dublin Civic Center
Michael McCorriston, Vice Mayor 100 Civic Plaza
Jean Josey, Councilmember Dublin, CA 94568
Dr. Sherry Hu, Councilmember www.dublin.ca.gov
Kashef Qaadri, Councilmember

Regular Meeting of the

DUBLIN CITY COUNCIL MEETING

Tuesday, October 3, 2023 Location: City Council Chamber 100 Civic Plaza
Dublin, CA 94568

REGULAR MEETING 7:00 PM

Additional Meeting Procedures

This City Council meeting will be broadcast live on Comcast T.V. channel 28 beginning at 7:00 p.m. This meeting will also be livestreamed at www.tv30.org and on the City’s website at: https://dublin.ca.gov/ccmeetings

For the convenience of the City and as a courtesy to the public, members of the public who wish to offer comments electronically have the option of giving public comment via Zoom, subject to the following procedures:

□ Fill out an online speaker slip available at www.dublin.ca.gov. The speaker slip will be made available at 10:00 a.m. on Tuesday, October 3, 2023. Upon submission, you will receive Zoom link information from the City Clerk. Speakers slips will be accepted until the public comment period ends, or until the public comment period on non-agenda items is closed.

□ Once connected to the Zoom platform using the Zoom link information from the City Clerk, the public speaker will be added to the Zoom webinar as an attendee and muted. The speaker will be able to observe the meeting from the Zoom platform.

□ When the agenda item upon which the individual would like to comment is addressed, the City Clerk will announce the speaker in the meeting when it is their time to give public comment. The speaker will then be unmuted to give public comment via Zoom.

□ Technical difficulties may occur that make the option unavailable, and, in such event, the meeting will continue despite the inability to provide the option.

REGULAR MEETING 7:00 PM

1. CALL TO ORDER
1 October 03, 2023 Dublin City Council Regular Meeting Agenda 2

2. PLEDGE OF ALLEGIANCE

3. OR AL COMMUNICATIONS

3.1 Presentation of the Domestic Violence Awareness and Prevention Month Proclamation
The City Council will present the Domestic Violence Awareness and Prevention Month Proclamation.

STAFF RECOMMENDATION:

Present the proclamation.

Staff Report
Attachment 1 - Domestic Violence Awareness and Prevention Month Proclamation

3.2 Presentation of the Hindu American Awareness and Appreciation Month Proclamation
The City Council will present the Hindu American Awareness and Appreciation Month Proclamation.

STAFF RECOMMENDATION:

Present the proclamation.

Staff Report
Attachment 1 - Hindu American Awareness and Appreciation Month Proclamation

3.3 Employee Introduction
New City of Dublin Staff member, Stephanie Tsoi, Senior Accountant in the Finance Department, will be introduced.

STAFF RECOMMENDATION:

Welcome the new City of Dublin Staff member.

Staff Report

3.4 Public Comment
At this time, the public is permitted to address the City Council on non-agendized items. Please step to the podium and clearly state your name for the record. COMMENTS SHOULD NOT EXCEED THREE (3) MINUTES. In accordance with State Law, no action or discussion may take place on any item not appearing on the posted agenda. The Council may respond to statements made or questions asked, or may request Staff to report back at a future meeting concerning the matter. Any member of the public may contact the City Clerk’s Office related to the proper procedure to place an item on a future City Council agenda. The exceptions under which the City Council MAY discuss and/or take action on items not appearing on the agenda are contained in Government Code Section 54954.2(b)(1)(2)(3).

4. CONSENT CALENDAR
Consent Calendar items are typically non-controversial in nature and are considered for approval by the City Council with one single action. Members of the audience, Staff or the City Council who would like an item removed from the Consent Calendar for purposes of public input may request the Mayor to remove the item.

4.1 Approval of the September 19, 2023 Regular City Council Meeting Minutes The City Council will consider approval of the minutes of the September 19, 2023 Regular City Council Meeting.
2 October 03, 2023 Dublin City Council Regular Meeting Agenda 3 STAFF RECOMMENDATION:

Approve the minutes of the September 19, 2023 Regular City Council Meeting.

Staff Report
Attachment 1 - September 19, 2023 Regular City Council Meeting Minutes

5. WRITTEN COMMUNICATION – None.

6. PUBLIC HEARING

6.1 Quarry Lane School Performing Arts Center (PLPA-2021-00041) The applicant, Dr. Sabri Arac of Quarry Lane School, proposes to construct a 13,800- square-foot performing arts center and related site, landscape, and parking improvements for the Quarry Lane School located at 6237 and 6363 Tassajara Road. The requested approvals include an amendment to the Planned Development Zoning Stage 1 and 2 Development Plans, a Conditional Use Permit, and a Site Development Review Permit. A Supplemental Mitigated Negative Declaration has been prepared for consideration as part of the project. The Planning Commission reviewed the project and unanimously recommended approval.

STAFF RECOMMENDATION:

Conduct the public hearing, deliberate and take the following actions: 1) adopt the Resolution Adopting a Supplemental Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for a New Performing Arts Center at the Quarry Lane School; 2) waive the reading and INTRODUCE the Ordinance Amending the Zoning Map and Approving an Amended Planned Development Zoning District and Related Stage 1 and Stage 2 Development Plans for the Quarry Lane School; and 3) adopt the Resolution Approving a Conditional Use Permit and Site Development Review Permit for a New Performing Arts Center at the Quarry Lane School.

Staff Report
Attachment 1 - Resolution Adopting a Supplemental Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for a New Performing Arts Center at the Quarry Lane School
Attachment 2 - Exhibit A to the Resolution - Supplemental Mitigated Negative Declaration
Attachment 3 - Exhibit B to the Resolution - Mitigation Monitoring and Reporting Program
Attachment 4 - Ordinance Amending the Zoning Map and Approving an Amended Planned Development Zoning District and Related Stage 1 and Stage 2 Development Plans for the Quarry Lane School
Attachment 5 - Resolution Approving a Conditional Use Permit and Site Development Review Permit for the New Performing Arts Center at the Quarry Lane School Attachment 6 - Exhibit A to the Resolution - Plans Prepared by BKBC Architects Inc Attachment 7 - Planning Commission Resolution Recommending the City Council Approve Performing Arts Center at Quarry Lane School
Item 6.1 PowerPoint Presentation
Item 6.1 - SB 343

7. UNFINISHED BUSINESS – None.
3 October 03, 2023 Dublin City Council Regular Meeting Agenda 4

8. NEW BUSINESS

8.1 Dublin Arts Center Operations Overview
The City Council will receive an overview of the planned operation of the Dublin Arts Center.

STAFF RECOMMENDATION:

Receive the report.

Staff Report
Attachment 1 - Dublin Arts Center Operations Guide
Item 8.1 PowerPoint Presentation

9. OTHER BUSINESS
Brief information only reports from City Council and/or Staff, including committee reports and reports by City Council related to meetings attended at City expense (AB1234).

10. ADJOURNMENT

This AGENDA is posted in accordance with Government Code Section 54954.2(a) If requested, pursuant to Government Code Section 54953.2, this agenda shall be made available in appropriate alternative formats to persons with a disability, as required by Section 202 of the Americans with Disabilities Act of 1990 (42 U.S.C. Section 12132) (ADA), and the federal rules and regulations adopted in implementation thereof. To make a request for disability-related modification or accommodation, please contact the City Clerk’s Office (925) 833-6650 at least 72 hours in advance of the meeting. Upon receiving a request, the City will swiftly resolve requests for reasonable accommodation for individuals with disabilities, consistent with the federal ADA, and resolve any doubt in favor of accessibility.

Agenda materials that become available within 72 hours in advance of the meeting, and after publishing of the agenda, will be available at Civic Center, 100 Civic Plaza, and will be posted on the City’s website at www.dublin.ca.gov/ccmeetings.

Mission

The City of Dublin promotes and supports a high quality of life, ensures a safe and secure environment, fosters new opportunities, provides equity across all programs, and champions a culture of diversity and inclusion.
4 STAFF REPORT

CITY COUNCIL

Page 1 of 2 ends

Agenda Item 3.1
DATE: October 3, 2023
TO: Honorable Mayor and City Councilmembers
FROM: Linda Smith, City Manager
SUBJECT: Presentation of the Domestic Violence Awareness and Prevention Month Proclamation
Prepared by: Marissa Clevenger, Administrative Technician EXECUTIVE SUMMARY:

The City Council will present the Domestic Violence Awareness and Prevention Month proclamation.

STAFF RECOMMENDATION:

Present the proclamation.

FINANCIAL IMPACT:

None.

DESCRIPTION:

Domestic Violence Awareness and Prevention Month is recognized annually during the month of October. October is significant because in October 1987, the first Domestic Violence Awareness Month was observed, which also marked the introduction of the first national domestic violence toll-free hotline. In 1989 the U.S. Congress designated October as National Domestic Violence Awareness Month and such legislation has passed every year since.

STRATEGIC PLAN INITIATIVE:

None.

NOTICING REQUIREMENTS/PUBLIC OUTREACH:

The City Council Agenda was posted.
5

Page 2 of 2 ends

ATTACHMENTS:
1) Domestic Violence Awareness and Prevention Month Proclamation 6 Attachment 1

A PROCLAMATION OF THE CITY COUNCIL

CITY OF DUBLIN

CALIFORNIA
“Domestic Violence Awareness and Prevention Month”
WHEREAS, one in every three women will experience domestic violence during her lifetime; and approximately 15.5 million children are exposed to domestic violence every year; and
WHEREAS, the problem of domestic violence is not confined to any group or groups of people, but crosses all economic, racial, gender, educational, religious, and societal barriers, and is sustained by societal indifference; and WHEREAS, victims of violence should have access to medical and legal services, counseling, transitional housing, and other supportive services so that they can escape the cycle of abuse; and WHEREAS, the City of Dublin encourages domestic violence victims and their families to seek assistance from Rewire Community, Tri- Valley Haven, and other appropriate victims services organizations, and recognizes the compassion and dedication of the individuals who provide services to victims of domestic violence; and
WHEREAS, local programs, state coalitions, national organizations, and other agencies nationwide are committed to increasing public awareness of domestic violence and its prevalence, and to eliminating it through prevention and education.

NOW, THEREFORE, BE IT RESOLVED, that the Dublin City Council do es hereby proclaim October 2023 as “Domestic Violence Awareness and Prevention Month” in the City of Dublin and encourage s the community to be cognizant of the important work done by domestic violence programs and victims service providers, as well as actively participate in the scheduled activities and pro grams that work towards the elimination of personal and institutional violence against women and children.

DATED: October 3, 2023

Mayor Melissa Hernandez Vice Mayor Michael McCorriston
_______
Councilmember Sherry Hu Councilmember Jean Josey Councilmember Kashef Qaadri 7 STAFF REPORT

CITY COUNCIL

Page 1 of 2 ends

Agenda Item 3.2
DATE: October 3, 2023
TO: Honorable Mayor and City Councilmembers
FROM: Linda Smith, City Manager
SUBJECT: Presentation of the Hindu American Awareness and Appreciation Month Proclamation
Prepared by: Marissa Clevenger, Administrative Technician EXECUTIVE SUMMARY:

The City Council will present the Hindu American Awareness and Appreciation Month proclamation.

STAFF RECOMMENDATION:

Present the proclamation.

FINANCIAL IMPACT:

None.

DESCRIPTION:

Hindu American Awareness and Appreciation Month is celebrated annually in the month of October. October is significant because it is the birth month of Mahatma Gandhi and is often when major Hindu holidays such as Navaratri and Diwali are celebrated. Hindu Heritage Month is a global movement highlighting Hinduism as a tradition and the celebrating the contributions Hinduism has made to human society.

STRATEGIC PLAN INITIATIVE:

None.

NOTICING REQUIREMENTS/PUBLIC OUTREACH:

The City Council Agenda was posted.
8

Page 2 of 2 ends

ATTACHMENTS:
1) Hindu American Awareness and Appreciation Month Proclamation 9 Attachment 1

A PROCLAMATION OF THE

CITY OF DUBLIN, CALIFORNIA
“Hindu American Awareness and Appreciation Month”
WHEREAS, the City of Dublin, along with the nation, has been shaped by the extraordinary cultural and ethnic linguistic and religious diversity of its residents; and
WHEREAS, there are an estimated 1.2 billion Hindus worldwide, and approximately 3.4 million Hindu Americans live across the country; and
WHEREAS, Hindu Americans in the City of Dublin represent diverse ethnic backgrounds, including individuals of Indian, Pakistani, Bangladeshi, Malaysian, Indonesian, Afghan, Nepali, Bhutanese, Sri Lankan, Fijian, Caribbean, and European descent; and WHEREAS, the City of Dublin and its greater community has benefited from its connection with Hindu Americans, especially through the Vedanta philosophy, Ayurvedic medicine, classical Indian art, dance, music, meditation, yoga, literature, and community service; and
WHEREAS, the year 2023 marks the 130th anniversary of Hinduism being officially introduced to the United States by Swami Vivekananda at the 1893 World’sParliament of Religions in Chicago, IL, and the 123rd anniversary of when he founded the Vedanta Society in San Francisco, California in 1900; and
WHEREAS, Hindu Americans promote the ideals of tolerance, pluralism, and religious freedom, and respect the diversity of all faiths, and the Vedas, the 5,000-year-old texts of Hindu Americans, provide the basis for these core principles: “Truth is one, the wise call it by many names” (Ekam sat vipra bahudha vadanti); and WHEREAS, our diversity is one of our greatest strengths, and the City of Dublin joins with all those around the world celebrating Hindu Americans.

NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Dublin does hereby proclaim October 2023 as “Hindu American Awareness and Appreciation Month” in the City of Dublin.

DATED: October 3, 2023

Mayor Melissa Hernandez Vice Mayor Michael McCorriston
_______
Councilmember Sherry Hu Councilmember Jean Josey Councilmember Kashef Qaadri 10 STAFF REPORT

CITY COUNCIL

Page 1 of 1 ends

Agenda Item 3.3
DATE: October 3, 2023
TO: Honorable Mayor and City Councilmembers
FROM: Linda Smith, City Manager
SUBJECT: Employee Introduction
Prepared by: Sarah Monnastes, Human Resources Director
EXECUTIVE SUMMARY:

New City of Dublin Staff member, Stephanie Tsoi, Senior Accountant in the Finance Department, will be introduced.

STAFF RECOMMENDATION:

Welcome the new City of Dublin Staff member.

FINANCIAL IMPACT:

None.

DESCRIPTION:

New City of Dublin Staff member, Stephanie Tsoi, Senior Accountant in the Finance Department, will be introduced.

STRATEGIC PLAN INITIATIVE:

None.

NOTICING REQUIREMENTS/PUBLIC OUTREACH:

The City Council Agenda was posted.

ATTACHMENTS:

None.
11 STAFF REPORT

CITY COUNCIL

Page 1 of 1 ends

Agenda Item 4.1
EXECUTIVE SUMMARY:

The City Council will consider approval of the minutes of the September 19, 2023 Regular City Council Meeting.

STAFF RECOMMENDATION:

Approve the minutes of the September 19, 2023 Regular City Council Meeting.

FINANCIAL IMPACT:

None.

DESCRIPTION:

The City Council will consider approval of the minutes of the September 19, 2023 Regular City Council Meeting.

STRATEGIC PLAN INITIATIVE:

None.

NOTICING REQUIREMENTS/PUBLIC OUTREACH:

The City Council Agenda was posted.

ATTACHMENTS:
1) September 19, 2023 Regular City Council Meeting Minutes DATE: October 3, 2023
TO: Honorable Mayor and City Councilmembers
FROM: Linda Smith, City Manager
SUBJECT: Approval of the September 19, 2023 Regular City Council Meeting Minutes Prepared by: Marsha Moore, MMC, City Clerk
12 MINUTES OF THE CITY COUNCIL

OF THE CITY OF DUBLIN
Regular Meeting: September 19, 2023

DUBLIN CITY COUNCIL MINUTES

REGULAR MEETING
SEPTEMBER 19, 2023
The following are minutes of the actions taken by the City of Dublin City Council. A full video recording of the meeting with the agenda items indexed and time stamped is available on the City’s website at:https://dublin.ca.gov/ccmeetings
REGULAR MEETING 7:00 PM
A Regular Meeting of the Dublin City Council was held on Tuesday, September 19, 2023, in the City Council Chamber. The meeting was called to order at 7:00 PM, by Mayor Hernandez. 1) CALL TO ORDER
Attendee Name Status
Melissa Hernandez, Mayor Present
Michael McCorriston, Vice Mayor Present
Jean Josey, Councilmember Present
Dr. Sherry Hu, Councilmember Present
Kashef Qaadri, Councilmember Present
2) PLEDGE OF ALLEGIANCE
3) ORAL COMMUNICATIONS

3.1) Public Comment
Jennifer Lininger provided public comment.
4) CONSENT CALENDAR

4.1) Approved the September 5, 2023 Regular City Council Meeting Minutes.

4.2) Adopted Resolution No. 102-23 titled, “Finding that Developers Having Obligations Under Active Development Agreements and Supplemental Agreements as Amended, Have Complied in Good Faith with the Terms and Provisions of the Agreements.”

4.3) Received a report of payments issued from August 1, 2023 – August 31, 2023, totaling $21,524,852.44.

Attachment 1
13 DUBLIN CITY COUNCIL MINUTES

REGULAR MEETING
SEPTEMBER 19, 2023

4.4) Adopted Resolution No. 103-23 titled, “Approving a Deposit and Reimbursement Agreement with TH East Ranch Dublin LLC.”

4.5) Approved and authorized the Mayor to execute the Fourth Amendment to the Amended and Restated Agreement for Legal Services.

On a motion by Vice Mayor McCorriston, seconded by Councilmember Qaadri, and by unanimous vote, the City Council adopted the Consent Calendar.

RESULT: ADOPTED [UNANIMOUS]
MOVED BY: Michael McCorriston, Vice Mayor
SECOND: Kashef Qaadri, Councilmember
AYES: Hernandez, McCorriston, Josey, Hu, Qaadri
5) WRITTEN COMMUNICATION – None.
6) PUBLIC HEARING – None.
7) UNFINISHED BUSINESS

7.1) Inclusionary Zoning and In-Lieu Fee Feasibility Study and Commercial Linkage Fee Nexus Study
The City Council received a report regarding a review of the Commercial Linkage Fee and the Inclusionary Zoning and In-Lieu Fee programs which addressed questions and feedback from the presentation at the August 15, 2023 Regular City Council Meeting.

Mayor Hernandez opened the public comment period. Upon receiving no public comment, Mayor Hernandez closed the public comment period.

The City Council asked clarifying questions, provided feedback, and unanimously supported the Staff and consultant’s recommendation for the Commercial Linkage Fee and In-Lieu Fee calculations.

7.2) Strategic Plan Update – First Year
The City Council received a presentation on the annual status update on the City’s Two-Year Strategic Plan.

Mayor Hernandez opened the public comment period. Upon receiving no public comment, Mayor Hernandez closed the public comment period.
14 DUBLIN CITY COUNCIL MINUTES

REGULAR MEETING
SEPTEMBER 19, 2023
8) NEW BUSINESS

8.1) Citywide Outdoor Seating Design Guidelines (PLPA-2023-00024) The City Council received a presentation on the proposed Citywide Outdoor Seating Guidelines (PLPA-2023-00024).

Mayor Hernandez opened the public comment period. Upon receiving no public comment, Mayor Hernandez closed the public comment period.

On a motion by Councilmember Qaadri, seconded by Councilmember Josey, and by unanimous vote, the City Council adopted Resolution No. 104-23 titled, “Approving the Citywide Outdoor Seating Design Guidelines.”
RESULT: ADOPTED [UNANIMOUS]
MOVED BY: Kashef Qaadri, Councilmember
SECOND: Jean Josey, Councilmember
AYES: Hernandez, McCorriston, Josey, Hu, Qaadri
9) OTHER BUSINESS
The City Council and Staff provided brief information-only reports, including committee reports and reports by City Council related to meetings attended at City expense (AB1234).

By consensus, the City Council requested Staff prepare and frame a certificate from the entire City Council in recognition of Dublin resident PFC Toft Jessen receiving the Legion of Honor Medal from France for his service in World War II and the liberation of France. 10) ADJOURNMENT
Mayor Hernandez adjourned the meeting at 8:58 PM.

Mayor
ATTEST:

City Clerk
15 STAFF REPORT
City Council

Page 1 of 10 ends

Agenda Item 6.1
DATE: October 3, 2023
TO: Honorable Mayor and City Councilmembers
FROM: Linda Smith, City Manager
SUBJECT: Quarry Lane Performing Arts Center (PLPA-2021-00041) Prepared by: Jeff Baker, Community Development Director EXECUTIVE SUMMARY:

The applicant, Dr. Sabri Arac of Quarry Lane School, proposes to construct a 13,800-square-foot performing arts center and related site, landscape, and parking improvements for the Quarry Lane School located at 6237 and 6363 Tassajara Road. The requested approvals include an amendment to the Planned Development Zoning Stage 1 and 2 Development Plans, a Conditional Use Permit, and a Site Development Review Permit. A Supplemental Mitigated Negative Declaration has been prepared for consideration as part of the project. The Planning Commission reviewed the project and unanimously recommended approval.

STAFF RECOMMENDATION:

FINANCIAL IMPACT:

All costs associated with the processing of this application are paid for by the applicant. 16

Page 2 of 10 ends

DESCRIPTION:

Background
The Quarry Lane School is located on approximately 12.6 acres on the east side of Tassajara Road at 6237 and 6363 Tassajara Road. The school is located within the Eastern Dublin Specific Plan area and has Planned Development Zoning (Ordinance 12-14 and Ordinance 24-00). The project site has a General Plan and Eastern Dublin Specific Plan land use designation of Medium Density Residential. The site is surrounded by open space, parkland, and residential uses as described in Figure 1 and Table 1 below. This includes an existing riparian area that borders the project site to the south. In 2020, the Quarry Lane School acquired the 2.6-acre property immediately to the south of the existing school site with the intent to expand their campus. The site, historically known as the Kobold Property, has a single-family home and associated outbuildings, which most recently was used as a landscape supply business. The Kobold Property is highlighted in orange with the existing school facilities shown immediately to the north on Figure 1.

Figure 1: Project Site
17

Page 3 of 10 ends

Table 1: Surrounding Land Uses
Location Zoning General Plan Land Use Current Use
North PD Medium Density – Residential
(6.1 -14 du/ac)
Single-Family Homes
South PD Open Space and Medium Density
– Residential
(6.1 -14 du/ac)
Open Space and Single-
Family Homes
East PD Open Space Open Space
West PD Open Space Open Space
In April 1999, prior to the site being annexed to the City of Dublin, Alameda County approved a Planned Development Zoning District to allow the development of the first phase of the Quarry Lane School. At the time, the proposed project included a 15,600-square-foot building for a day care, preschool, and elementary school with a maximum enrollment of 200 students. A programmatic Environmental Impact Report was certified by Alameda County for the Quarry Lane School Master Plan.

On December 19, 2000, the City Council adopted a Planned Development District pre-zoning and annexation application for the Quarry Lane School (Ordinance 24-00). This pre-zoning and annexation included both the Quarry Lane School and the Kobold Property. The approval included Phase II of the Quarry Lane School which allowed construction of an additional 66,685-square- foot middle and high school building, recreation areas, landscaping, and grading. This allowed the school to increase enrollment to 950 students including middle and high school students. The pre- zoning for the Kobold Property allowed for interim agricultural uses on the property until such time the property was redeveloped.

On May 25, 2004, the Planning Commission approved minor amendments to the Planned Development Zoning and a Site Development Review Permit to allow construction of Phase II of the Quarry Lane School (Resolution 04-46). These approvals allowed Phase II to be increased to 70,289 square feet of new building area (an increase from the 66,685 square feet approved in 2000). While the building area increased, the total maximum student population remained at 950 students.

On June 17, 2014, the City Council approved a Planned Development Rezone with a Stage 1 and 2 Development Plan (Ordinance 12-14) and a Site Development Review Permit for Phase III of the Quarry Lane School. These approvals allowed a maximum of 110,602 square feet of development and construction of the cafeteria and science buildings. The total maximum student population remained at 950 students.

In 2020, the Quarry Lane School purchased the Kobold Property to expand the campus. A lot merger was recorded on March 31, 2022 (Application No. M-2022-001, 2022065678), which merged the existing Quarry Lane School parcel and the Kobold Property to create one 12.6-acre parcel.
18

Page 4 of 10 ends

The applicant is currently requesting approval to construct a 13,800-square-foot performing arts center, a 126-space parking lot, and related site and landscape improvements on the former Kobold property. The requested entitlements include an amendment to the Planned Development Zoning, a Conditional Use Permit, and a Site Development Review Permit.

Analysis
The proposed building will include a performance hall with seating for up to 350 people, along with drama, music, dance classes, and rehearsal studios for Quarry Lane School students. The new facility will provide a dedicated space to host the school’s existing performance art shows and events, as well as an improved space for high school commencement ceremonies. Currently, the school hosts approximately eight events annually, including the high school graduation ceremony.

These events occur in the evenings and on weekends and are held in existing buildings on the campus. Implementation of the proposed project will not increase student enrollment capacity or change the frequency or capacity of such events but will provide a new, modernized, and dedicated facility to host these events.

Planned Development Zoning
The application includes an amendment to the Planned Development Zoning Stage 1 and Stage 2 Development Plans. The proposed amendment will apply the existing Planned Development Zoning for the Quarry Lane School to the expanded school site which includes the former Kobold Property, and amends the Stage 1 and Stage 2 Development Plan to allow for development of the Performing Arts Center and related improvements.
19

Page 5 of 10 ends

Figure 2. Expanded Campus
The Planned Development Zoning is proposed to be amended and restated as shown in Attachment 4. However, the proposed amendments to the Planned Development Zoning are limited to the following, which enable development of the performing arts center but do not increase the student enrollment capacity:
 Incorporate in the Planned Development Zoning District the recently acquired 2.6-acre site immediately to the south of the school, formerly known as the Kobold property (Attachment 4, Section 3);
 Add a school performing arts center as a conditionally permitted use (Attachment 4, Section 4.2);
 Increase the Maximum Building Area from 110,602 square feet to 124,402 square feet (Attachment 4, Section 4.4);
 Decrease the Floor-to-Area Ratio from 0.253 to 0.226 (Attachment 4, Section 4.4); and  Adjust the Parking Spaces requirement to include the 117 parking spaces required for the performing arts center (Attachment 4, Section 4.4).

The Ordinance approving the proposed amendments to the Planned Development Zoning is included as Attachment 4.
20

Page 6 of 10 ends

Conditional Use Permit
The Planned Development Zoning, as amended, allows a performing arts center at the school as a conditionally permitted use. A Conditional Use Permit enables the City to place conditions of approval on a project to ensure that the operating characteristics are compatible with surrounding uses. The proposed project has been reviewed for issues related to operating characteristics, access and parking. Conditions of approval have been placed on the project, where appropriate, to ensure compatibility with the surrounding uses.

The proposed performing arts center will provide a dedicated space to host the school’s existing performance art shows and events, as well as an improved space for high school commencement ceremonies. The new building will be used to support only the existing arts programs at the school, thus there will be no increase in school enrollment capacity or change in day-to-day operations.

A new, right-in-only driveway is proposed on Tassajara Road. Vehicles will continue to exit the school using the existing signalized intersection that provides access to the school. Conditions of approval have been included to ensure the driveway is designed and operated as a right-in-only (Attachment 5, Conditions 28 and 29). Parking requirements are regulated by the Zoning Ordinance (Section 8.76.080.D), which requires one space per three fixed seats, or 117 spaces for the proposed facility. The proposed project is not anticipated to increase the existing demand for parking because it will host functions that already occur at the school. However, the proposed project does include an additional 126 parking spaces, which exceeds the requirement.

The Resolution approving the Conditional Use Permit is included as Attachment 5.

Site Development Review Permit
Site Layout, Circulation & Parking
The proposed 13,800-square-foot performing arts center will be located to the south of the existing school buildings and the 126 additional parking spaces would be located east and south of the proposed performing arts center. Access to the site is proposed from Tassajara Road via a new right-in-only driveway at the southern end of the project site. An internal drive aisle will connect to the existing school parking lot to the north. Vehicles will continue to exit the site from the existing signalized entry and exit on Tassajara Road. Figure 3 below shows the proposed project in context with the existing school. A new auxiliary lane will be provided to facilitate access to this new driveway. The applicant will construct this auxiliary lane unless the City’s Tassajara Road gap closure project is completed first. The gap closure project is in the planning phase to build Tassajara Road to its ultimate width in the area of the school.

Paved pedestrian walkways will be provided to connect the parking area with the proposed performing arts center, as well as to provide pedestrian connections to proposed sidewalks along Tassajara Road. Safety and security lighting will be provided along pedestrian pathways, around the new building and in the parking area. Drive aisle and parking area lighting will consist of 15- foot-high, pole-mounted LED lights. Lighting for pedestrian pathways will consist of three-foot- high bollards.
21

Page 7 of 10 ends

The parking requirement for the school is based on the Off-Street Parking and Loading Regulations in the Zoning Ordinance (Section 8.76.080.D). The requirement is to provide one space per three fixed seats. The 350-seat performing arts center has a requirement to provide 117 parking spaces. The applicant proposes to provide 126 new parking spaces to accommodate this requirement.

Figure 3: Proposed Site Plan
Architecture
The architecture for the new building is characterized as modern with simple lines and will be integrated into the overall campus design (see Figure 4 below). The side and front facades, most visible from Tassajara Road, consistent of a prominent roofline and large canopy providing cover for vehicle pickup and drop off. The materials of the new building will match the existing campus buildings. The stucco siding will be painted to match the existing campus buildings and the standing seam metal roof color will complement the roof of the other school buildings. The window design and placement will also compliment the other buildings on the school campus to create a unified aesthetic.
22

Page 8 of 10 ends

Figure 4: Proposed West Elevation
Landscaping
The proposed landscape design includes a landscape buffer along Tassajara Road with trees and shrubs, including coast live oak, glossy abelia, Point Reyes creeper, and desert carpet. Existing street trees on the Tassajara Road frontage would be retained and the landscaping enhanced.

Landscape plantings, including a variety of trees, shrubs, flowering perennials, and grasses would be provided around the building and in the parking lot. In addition, the proposed project includes several landscaped stormwater basins totaling approximately 3,460 square feet. Stormwater basins would include Berkeley sedge, blue rush, and blue wild rye. A three-inch layer of wood mulch would be provided adjacent to the existing riparian area associated with an unnamed tributary that borders the project site to the south. A rail fence would be provided along the edge of a City-required creek setback to prevent intrusion into the riparian area.

The Resolution approving the Site Development Review Permit is included as Attachment 5 with the project plans included at Attachment 6.

PLANNING COMMISSION REVIEW:

The Planning Commission held a public hearing on September 12, 2023 to consider the proposed project. Four community members spoke in support of the project. The Planning Commission voted unanimously to recommend that the City Council approve the project (Attachment 7).

ENVIRONMENTAL DETERMINATION:

Development of the project site was previously addressed in the Eastern Dublin General Plan Amendment (EDGPA) and the Eastern Dublin Specific Plan Environmental Impact Report (EDSP EIR) for which the City Council certified an Environmental Impact Report (EIR) and an addendum on August 22, 1994. Pursuant to Resolution No. 53-93, the City Council adopted a Mitigation Measures and Monitoring Program, which continue to apply to development in Eastern Dublin.

The City Council also adopted a Statement of Overriding Considerations in connection with certification of the 1993 EDGPA/EDSP Environmental Impact Report. 23

Page 9 of 10 ends

Consistent with the requirements of the California Environmental Quality Act (CEQA) including Section 21166 and related CEQA Guidelines Sections 15162 and 15163, the City prepared an Initial Study to determine whether additional environmental review was required for the proposed Quarry Lane School Performing Arts Center Project. Pursuant to CEQA Guidelines Section 15163, the City determined that the environmental impacts associated with the proposed project would be the same as or similar to those identified in the EDSP EIR and mitigated to less- than-significant levels with implementation of the mitigation measures identified in the EDSP EIR.

New impacts were identified in the following environmental areas: air quality and noise. None of these impacts would result in significant effects that cannot be mitigated to less-than-significant levels with implementation of project-specific mitigation measures, the Initial Study/Supplemental Mitigated Negative Declaration. Therefore, the City has determined that the proposed project requires a Supplemental Mitigated Negative Declaration, in compliance with Public Resource Code Section 21166 and CEQA Guidelines Section 15163. The Supplemental Mitigated Negative Declaration/Initial Study was circulated for a public review period from July 5, 2023, to August 4, 2023. One comment letter was received from Zone 7.

The resolution adopting a supplemental mitigated negative declaration and mitigation monitoring and reporting program for the performing arts center is attached as Attachment 1, with the Supplemental Mitigated Negative Declaration included as Attachment 2 and the Mitigation and Monitoring Program included as Attachment 3.

NOTICING REQUIREMENTS/PUBLIC OUTREACH:

A Planning Application sign was posted on the project site and the project was also included on the City’s development projects webpage.

Two City-led Community Meetings were held on August 8 and August 9, 2023, to provide Dublin residents with information about the proposed project. Four residents attended the meeting on August 8 and three residents attended the meeting on August 9. Staff provided a presentation that included an overview of the proposed project.

In accordance with State law, a public notice was mailed to all property owners and occupants within 300 feet of the proposed project to advertise the project and this public hearing. A public notice was also published in the East Bay Times and posted at several locations throughout the City. This Staff Report was made available on the City’s website and a copy provided to the Applicant. The City Council Agenda was posted.

STRATEGIC PLAN INITIATIVE:

None.

ATTACHMENTS:
1) Resolution Adopting a Supplemental Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for a New Performing Arts Center at the Quarry Lane School 2) Exhibit A to the Resolution - Supplemental Mitigated Negative Declaration 24

Page 10 of 10 ends

3) Exhibit B to the Resolution - Mitigation Monitoring and Reporting Program 4) Ordinance Amending the Zoning Map and Approving an Amended Planned Development Zoning District and Related Stage 1 and Stage 2 Development Plans for the Quarry Lane School 5) Resolution Approving a Conditional Use Permit and Site Development Review Permit for a New Performing Arts Center at the Quarry Lane School
6) Exhibit A to the Resolution - Plans Prepared by BKBC Architects Inc. 7) Planning Commission Resolution Recommending the City Council Approve Performing Arts Center at Quarry Lane School
25 Attachment 1
Reso. No. XX-23, Item X.X, Adopted XX/XX/2023 Page 1 of 3 RESOLUTION NO. XX - 23

A RESOLUTION OF THE CITY COUNCIL

OF THE CITY OF DUBLIN

ADOPTING A SUPPLEMENTAL MITIGATED NEGATIVE DECLARATION AND

MITIGATION MONITORING AND REPORTING PROGRAM FOR A NEW

PERFORMING ARTS CENTER AT THE QUARRY LANE SCHOOL
6237 AND 6363 TASSAJARA ROAD
(APNS 985-0072-002-00 AND 985-0002-006-03)
PLPA-2021-00041
WHEREAS, the Applicant, Dr. Sabri Arac of Quarry Lane School (School), has requested approval of a Site Development Review Permit and a Conditional Use Permit to operate and construct a 13,800 square foot performing arts center, 126 parking spaces, and related site and landscape improvements on the southern 2.6-acre portion of the School property acquired by the School in 2020 (formerly known as Kobold Property), and to amend to the Planned Development Zoning District and related Stage 1 and 2 Development Plan to incorporate the southern 2.6-acres and allow development of the performing arts center. These planning and implementing actions are collectively known as the “Project”; and
WHEREAS, the project site is 12.63 acres located at 6237 and 6363 Tassajara Road (APNS 985-0072-002-00 AND 985-0002-006-03); and
WHEREAS, the existing General Plan and Eastern Dublin Specific Plan land use designations are Medium-Density Residential; and
WHEREAS, the California Environmental Quality Act (CEQA) together with State guidelines and Dublin’s CEQA Guidelines and Procedures require that certain projects be reviewed for environmental impacts and when applicable, environmental documents prepared; and
WHEREAS, the Project area was previously analyzed in the Eastern Dublin General Plan Amendment and Specific Plan, which was adopted in 1993 and has a certified Program Environmental Impact Report (EIR) (SCH No. 91-103064) and analyzed in the Quarry Lane Master Plan, which was adopted in 1998 by the County of Alameda and has a certified EIR (SCH No. 97122109); and
WHEREAS, the City prepared an Initial Study to determine whether supplemental environmental review was required for the proposed Project under CEQA standards. The Initial Study examined whether there were substantial changes to the proposed development, substantial changes in circumstances, or new information, any of which would result in new or more severe significant impacts than previously analyzed in the 1993 General Plan Amendment/Specific Plan EIR, or whether any standards for supplemental environmental review were met; and
26 Attachment 1
Reso. No. XX-23, Item X.X, Adopted XX/XX/2023 Page 2 of 3 WHEREAS, upon completion of the Initial Study, it was determined that a Supplemental Mitigated Negative Declaration was required to mitigate impacts related to noise and air quality associated with the Project and, therefore, a Mitigation Monitoring and Reporting Program was prepared; and
WHEREAS, on September 12, 2023, the Planning Commission held a properly noticed public hearing in which interested parties had the opportunity to be heard, and adopted Resolution No. 23-08 recommending that the City Council adopt the Supplemental Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program for the Project; and
WHEREAS, on October 3, 2023, the City Council held a properly noticed public hearing on the Project and Supplemental Mitigated Negative Declaration, at which time all interested parties had the opportunity to be heard; and WHEREAS, a Staff Report dated October 3, 2023, incorporated herein by reference, described and analyzed the Project and related Supplemental Mitigated Negative Declaration for the City Council and recommended adoption of the Supplemental Mitigated Negative Declaration and Mitigation Monitoring and Reporting Program and approval of the Project; and
WHEREAS, the City Council considered the Supplemental Mitigated Negative Declaration and all above-referenced reports, recommendations, and testimony before taking any action on the project.

NOW, THEREFORE BE IT RESOLVED that the foregoing recitals are true and correct and made a part of this Resolution.

BE IT FURTHER RESOLVED that the City Council of the City of Dublin finds the following:

A. The Dublin City Council has reviewed and considered the Supplemental Mitigated Negative Declaration including the comment received during the public review period prior to taking action on the Project.

B. The Supplemental Mitigated Negative Declaration adequately describes the environmental impacts of the Project. On the basis of the whole record before it, the City Council finds that there is no substantial evidence that the Project, as approved with mitigation, will have a significant effect on the environment.

C. The Supplemental Mitigated Negative Declaration has been completed in compliance with CEQA, the State CEQA Guidelines, and the City of Dublin Environmental Regulations.
27 Attachment 1
Reso. No. XX-23, Item X.X, Adopted XX/XX/2023 Page 3 of 3 D. The Supplemental Mitigated Negative Declaration is complete and adequate and reflects the City’s independent judgement and analysis as to the environmental effects of the Project.

E. Following adoption of this Resolution, City staff is authorized and directed to file with the County of Alameda a Notice of Determination pursuant to CEQA.

BE IT FURTHER RESOLVEDthat based on the above findings, the Dublin City Council adopts the Supplemental Mitigated Negative Declaration (attached as Exhibit A) and Mitigation Monitoring and Reporting Program (attached as Exhibit B) for the Project.

PASSED, APPROVED AND ADOPTED this 3 rd day of October 2023 by the following vote:

AYES:

NOES:

ABSENT:

ABSTAIN:

Mayor
ATTEST:

City Clerk
28 Quarry Lane School
Performing Arts Center
Supplemental Mitigated Negative Declaration/Initial Study June 30, 2023
Planning Application Number: PLPA-2021-00041
Attachment 2
29 This page intentionally left blank

30 Quarry Lane School
Performing Arts Center
Supplemental Mitigated Negative Declaration

June 30, 2023
Project Overview
This Initial Study has been prepared in accordance with the provisions of the California Environmental Quality Act (CEQA) and assesses the potential environmental impacts of implementing the proposed project described below. The Initial Study consists of a completed environmental checklist and a brief explanation of the environmental topics addressed in the checklist.

Because the proposed project is within the Eastern Dublin Specific Plan (EDSP or Eastern Dublin EIR) area and is generally based on the land use designation established by the City of Dublin General Plan for the subject property, this Initial Study relies on a Program Environmental Impact Report (EIR) prepared for the Eastern Dublin General Plan Amendment (Eastern Extended Planning Area) and EDSP (Eastern Dublin EIR),
1 which evaluated development of over
3,300 acres in the eastern part of the City. The Eastern Dublin EIR was certified by the City in 1993.

The subject of this Initial Study is the Quarry Lane School Performing Arts Center project, which includes development of a performing arts building and associated surface parking on 2.64 acres located just south of the existing Quarry Lane School at 6363 and 6237 Tassajara Road in eastern Dublin.

Prior CEQA Analysis
The project is located in eastern Dublin within the EDSP area; therefore, the Eastern Dublin EIR and associated addenda are applicable to the proposed project. This environmental document is described below.

31 to as the Eastern Dublin EIR. The Eastern Dublin EIR evaluated the impacts on the following environmental topical areas:
 Land Use
 Population, Employment and Housing
 Traffic and Circulation
 Community Services and Facilities
 Sewer, Water and Storm Drainage
 Soils, Geology and Seismicity
 Biological Resources
 Visual Resources
 Cultural Resources
 Noise
 Air Quality
 Fiscal Considerations
The following significant and unavoidable impacts were identified:
 Cumulative loss of agriculture and open space land
 Cumulative traffic
 Extension of certain community facilities (natural gas, electric and telephone service)  Consumption of non-renewable natural resources
 Increases in energy uses through increased water treatment and disposal and through operation of the water distribution system
 Inducement of substantial growth and concentration of population  Earthquake ground shaking
 Loss or degradation of botanically sensitive habitat
 Regional air quality
 Noise
 Alteration of visual character
The City adopted a Mitigation Monitoring Plan, which specifies mitigation measures and a monitoring plan that continue to apply to development in eastern Dublin. The City Council also adopted a Statement of Overriding Considerations (Resolution No. 53–93) in connection with certification of the Eastern Dublin EIR.
32 Two addenda to the Eastern Dublin EIR were subsequently approved by the City. The first Addendum2 addressed a modification to Alternative 2 identified in the Eastern Dublin EIR showing land beyond the Sphere of Influence designated as “Future Study Area” and providing a total of approximately 14,000 dwelling units and approximately 10.9 million square feet of commercial development on 4,200 acres. The second Addendum 3 provided updated
information related to the plans of the City and the Dublin San Ramon Services District (DSRSD) to provide sewer service to Eastern Dublin.

Proposed CEQA Analysis in this Document
The proposed project is generally based on the land use designations established by the City of Dublin General Plan and EDSP. This Initial Study relies on the EDSP EIR, which evaluated the development of over 3,300 acres in the eastern part of the City.

Pursuant to the requirements of CEQA, the City must evaluate the potential for construction or operation of the proposed project to create adverse environmental effects. The City prepared a CEQA analysis using the City’s Initial Study Checklist, dated June 30, 2023, incorporated herein by reference, to assess whether any further environmental review is required for the proposed project. This Supplemental Initial Study/Mitigated Negative Declaration (IS/MND) has been prepared for the proposed project pursuant to the rules for supplemental environmental review under Public Resources Code (PRC) Section 21166 and State CEQA Guidelines Section 15163. This Initial Study analyzes whether proposed changes to the Eastern Dublin Specific Plan, as represented by the proposed project, would result in any new or substantially more severe significant environmental impacts than those analyzed in the prior CEQA documents or whether any of the other standards requiring further environmental review under CEQA are met.

Based on the attached Initial Study, the proposed project would not have a significant effect on the environment. For the most part, the environmental impacts associated with the proposed project would be the same as or similar to those identified in the EDSP EIR and mitigated to less-than-significant levels with implementation of the mitigation measures identified in the EDSP EIR. New impacts were identified in the following environmental areas: air quality, and noise. None of these impacts would result in significant effects that cannot be mitigated to less- than-significant levels with implementation of project-specific mitigation measures identified in the attached Initial Study. Therefore, the City has determined that the proposed project requires a Supplemental Mitigated Negative Declaration, in compliance with PRC Section 21166 and CEQA Guidelines Section 15163.

2 Dublin, City of. 1993. Addendum to Eastern Dublin General Plan Amendment and Specific Plan Environmental Impact Report. May 4.
3 Dublin, City of. 1994. Addendum to the Eastern Dublin General Plan Amendment/Specific Plan Environmental Impact Report, Update of Plans to Provide Sewer Service. August 22. 33 Quarry Lane School
Performing Arts Center
Supplemental Mitigated Negative Declaration/Initial Study June 30, 2023
Planning Application Number: PLPA-2021-00041

34 This page intentionally left blank
35 City of Dublin Quarry Lane School Performing Arts Center Table of Contents | Page i

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)

Table of Contents
Project Overview 3
Prior CEQA Analysis 3
Proposed CEQA Analysis in this Document 5
Background & Project Description 1
Environmental Setting 11
Environmental Checklist 13
Determination 16
Explanation of Environmental Checklist Responses 17

Appendices
A CalEEMod Output Sheets
B Model Snap Shots

36 City of Dublin Quarry Lane School Performing Arts Center Table of Contents | Page ii

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
List of Figures
Figure 1: Project Location .............................................................................................................. 2 Figure 2: Aerial Photograph of the Project Site and Surrounding Land Uses ................................ 3 Figure 3: Overall Site Plan ............................................................................................................... 7 Figure 4: Expansion Site Plan Landscaping ..................................................................................... 8

List of Tables
Table A: Project Construction Emissions in Pounds Per Day ........................................................ 35 Table B: Project Operational Emissions ........................................................................................ 38 Table C: Unmitigated Inhalation Health Risks from Project Construction to Off-Site Receptors 40 Table D: Mitigated Inhalation Health Risks from Project Construction to Off-Site Receptors..... 41 Table E: Wildlife Species Observed During the Field Survey ........................................................ 47 Table F: Special-Status Species Evaluated for the Project ............................................................ 52 Table G: Ambient Noise Measurement Results (RGD Acoustics 2016) ...................................... 113 Table H: City of Dublin Land Use/Noise Compatibility Standards (dBA CNEL) ........................... 114 Table I: Typical Maximum Construction Equipment Noise Levels (Lmax) .................................... 117 Table J: Equipment Noise by Construction Phase ...................................................................... 118 Table K: Construction Vibration Damage Criteria ....................................................................... 120 Table L: Vibration Source Amplitudes for Construction Equipment .......................................... 121 Table M. Existing Transit Facilities .............................................................................................. 139

37 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 1

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Quarry Lane School Performing Arts Center
Supplemental Mitigated Negative Declaration/Initial
Study

Background & Project Description
Project Title
Quarry Lane School Performing Arts Center
Lead Agency Name and Address
City of Dublin
Community Development Department
100 Civic Plaza
Dublin, CA 94568
Contact Person and Phone Number
Linda Ajello, AICP
Senior Planner
Phone: 925-452-2152
[email protected]
Project Location
The project site is located at 6363 and 6237 Tassajara Road in eastern Dublin within the EDSP area (Assessor’s Parcel Numbers [APNs]: 985-0072-002-00 and 985-0002-006-034). The proposed project is located just east of Tassajara Road and immediately to the south of the existing Quarry Lane School. Figures 1 and 2 provide the regional location and an aerial photograph of the project site and surrounding area, respectively.

Project Applicant’s/Sponsor’s Name and Address
Dr. Sabri Arac
Quarry Lane School
3750 Boulder Street
Pleasanton, CA 94566

4 The two parcels are subject to a recent Lot Merger.
38 Service Layer Credits: USGS The National
Map: National Boundaries Dataset, 3DEP
Elevation Program, Geographic Names
Information System, National Hydrography
Dataset, National Land Cover Database,
National Structures Dataset, and National
Transportation Dataset; USGS Global
Ecosystems; U.S. Census Bureau
TIGER/Line data; USFS Road Data; Natural
Earth Data; U.S. Department of State
Humanitarian Information Unit; and NOAA
National Centers for Environmental
Information, U.S. Coastal Relief Model. Data
SOURCE: USGS The National Map (2018)
I:\DUB2101.03\GIS\MXD\Project Location and Vicinity.mxd (11/2/2022) FIGURE 1
Performing Arts Center at Quarry Lane School
Project Location and Vicinity
LEGEND
Project Location
Contra
Costa
County
Alameda
CountyÃÃ84
ÃÃ4
ÃÃ185
ÃÃ24
ÃÃ92
Project
Location
§¨¦238
§¨¦880
§¨¦580
§¨¦
680
Project Vicinity
0 1000 2000
FEET
39 Tassajara Creek
Tassaja
ra Rd
Tassajara Rd
Tassajara Rd
Fallon Rd
Wallis Ranch DrW
allis Ranch Dr
Rutherford Dr
Rutherford Dr
Tassajara Rd
Cydonia Ct
Branding Iron Ct
Silvera Ranch Dr
Highpointe Ct
Bridgestone CirBridgestone Cir
Terrace Ridge Ct
Shadow Hill Dr
N Dublin Ranch Dr
Round Hill Dr
Barrnet Bllvd
Tassaja
ra Rd
Tassajara Rd
Ledgewood Terrracee
Kingsmill Terrace
Tassajara Creek
Tassaja
ra Rd
Tassajara Rd
Fallon Rd
Wallis Ranch Dr
Rutherford Dr
Rutherford Dr
Tassajara Rd
Cydonia Ct
Branding Iron Ct
Silvera Ranch Dr
Highpointe Ct
Bridgestone Cir
Terrace Ridge Ct
Shadow Hill Dr
N Dublin Ranch Dr
Round Hill Dr
Barnet Blvd
Tassaja
ra Rd
Ledgewood Terrace
Kingsmill Terrace
Tassajara Creek
Tassajara Creek

THE QUARRY LANE SCHOOL

TASSAJARA CREEK

REGIONAL PARK

YARRA YARRA

EQUESTRIAN
CENTER

PART OF

DUBLIN RANCH

GOLF COURSE
5000 250
Project Site Boundary
FEET
SOURCES: Google Earth, 3/11/2022; LSA, 2022
I:\DUB2101.03\G\Aerial Photo of Site & Surrounding LU.ai (11/2/2022) FIGURE 2
Performing Arts Center at Quarry Lane School
Aerial Photograph of the Project Site and Surrounding Land Uses 40 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 4

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
General Plan Designation
Medium Density Residential (6.1-14.0 dwelling units per acre) Zoning
Planned Development (PD) Ordinance No. 24-00 and Ordinance No. 12-14 Project Description
Project Background
Opened in 1991, the Quarry Lane School (East Dublin campus) offers education for elementary through high school (K-12) students with an approved total student enrollment capacity of 950 students. The existing school facility, located at 6363 Tassajara Road, includes four buildings as follows:
 Building 1 (7,611 square feet) includes the school admissions office, multi-purpose room, and elementary school library.

Building 2 (15,578 square feet) includes the elementary school classrooms.  Building 3 (70,701 square feet) includes the middle and high school classrooms and laboratories, library, and gymnasium.
 Building 4 (13,003 square feet) includes the engineering/science and technology classrooms and laboratories, dining hall, and lecture hall.

In 2020, Quarry Lane School purchased the property immediately to the south with the intent to develop a dedicated space for the existing performing arts program and associated parking.

Prior Environmental Review
The project is located in eastern Dublin within the Eastern Dublin Specific Plan (EDSP) area; therefore, the Eastern Dublin EIR and associated addenda are applicable to the proposed project. This environmental document is described below.

Eastern Dublin General Plan Amendment and Eastern Dublin Specific Plan Program EIR (State Clearinghouse No. 1991103064). A Program EIR for the Eastern Dublin General Plan Amendment (Eastern Extended Planning Area) and the EDSP was certified by the City Council in 1993 by Resolution No. 51-93. This document and its related addenda collectively are referred to as the Eastern Dublin EIR. The Eastern Dublin EIR evaluated the impacts on the following environmental topical areas:
 Land Use
 Population, Employment and Housing
 Traffic and Circulation
 Community Services and Facilities
41 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 5

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Sewer, Water and Storm Drainage
 Soils, Geology and Seismicity
 Biological Resources
 Visual Resources
 Cultural Resources
 Noise
 Air Quality
 Fiscal Considerations
The following significant and unavoidable impacts were identified:
 Cumulative loss of agriculture and open space land
 Cumulative traffic
 Extension of certain community facilities (natural gas, electric and telephone service)  Consumption of non-renewable natural resources
 Increases in energy uses through increased water treatment and disposal and through operation of the water distribution system
 Inducement of substantial growth and concentration of population  Earthquake ground shaking
 Loss or degradation of botanically sensitive habitat
 Regional air quality
 Noise
 Alteration of visual character
The City adopted a Mitigation Monitoring Plan, which specifies mitigation measures and a monitoring plan that continue to apply to development in eastern Dublin. The City Council also adopted a Statement of Overriding Considerations (Resolution No. 53–93) in connection with certification of the Eastern Dublin EIR.

Two addenda to the Eastern Dublin EIR were subsequently approved by the City. The first Addendum
5 addressed a modification to Alternative 2 identified in the Eastern Dublin EIR showing land beyond the Sphere of Influence designated as “Future Study Area” and providing a total of approximately 14,000 dwelling units and approximately 10.9 million square feet of

5 Dublin, City of. 1993. Addendum to Eastern Dublin General Plan Amendment and Specific Plan Environmental Impact Report. May 4.
42 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 6

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
commercial development on 4,200 acres. The second Addendum6 provided updated information related to the plans of the City and the Dublin San Ramon Services District (DSRSD) to provide sewer service to Eastern Dublin.

Proposed Project
The City of Dublin is considering an application to construct a performing arts center on the southern portion of an approximately 12-acre property that currently contains the existing private K-12 Quarry Lane School and an existing single-family home. The proposed project would consist of a new 13,800-square-foot building with a 350-seat auditorium, three classrooms, and other support spaces and approximately 126 additional parking spaces. The proposed project would be constructed within the newly acquired southern portion of the school property, which was formerly used as a landscaping supply business and currently contains a single-family home and associated outbuildings. These existing structures would be demolished to accommodate development of the proposed project. Figure 3 shows the overall site plan. Figure 4 shows the expansion site plan, which includes details of the proposed performing arts center.

The proposed project would provide a dedicated space for the existing performing arts program but would not include any increase in total student enrollment or an expansion of existing school operations. The proposed building would include a performance hall with seating for up to 350 people, along with drama, music, dance, and rehearsal studios for current Quarry Lane School students. The new facility would provide space to host the school’s existing performance art shows and events, as well as an improved space for high school commencement ceremonies. Currently, the school hosts approximately eight events annually, including the high school graduation ceremony. These events occur in the evenings and on weekends.

Implementation of the proposed project would not change the frequency or capacity of such events but would provide a new modernized and dedicated facility in which to host these events.

Access, Circulation, and Parking
New vehicular access is proposed from Tassajara Road via a right-in only driveway at the southern end of the project site with a connection to the existing school parking lot to the north, which has a signalized entry and exit on Tassajara Road. The proposed additional parking area, consisting of 126 spaces, would be located east and south of the proposed performing arts center.

To accommodate existing parking demand on campus, the school has a student parking policy, which limits the total number of student parking permits to approximately 30 percent of the existing total parking spaces. Student and staff parking would not change with implementation

6 Dublin, City of. 1994. Addendum to the Eastern Dublin General Plan Amendment/Specific Plan Environmental Impact Report, Update of Plans to Provide Sewer Service. August 22. 43 NOT TO SCALE
Project Site Boundary
SOURCE: BKBC Architects, Inc., 8/4/2022
I:\DUB2101.03\G\Overall Site Plan.ai (11/2/2022)
FIGURE 3
Performing Arts Center at Quarry Lane School
Overall Site Plan
44 NOT TO SCALE
SOURCE: BKBC Architects, Inc., 8/4/2022
I:\DUB2101.03\G\Expansion Site Plan.ai (11/2/2022)
FIGURE 4
Performing Arts Center at Quarry Lane School
Expansion Site Plan
45 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 9

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
of the proposed project. Inbound traffic would have a dedicated right lane entering the parking lot. This access would be used for inbound entry only. Students, staff, and visitors would continue to exit the site via the existing signalized entry on Tassajara Road. The school uses a staggered system for morning arrival and afternoon dismissal times for different grade levels to facilitate traffic operations in the morning and afternoon.

Paved pedestrian walkways would be provided to connect the parking area with the proposed performing arts center, as well as to provide pedestrian connections to proposed sidewalks along Tassajara Road.

Safety and security lighting would be provided along pedestrian pathways, around the new building and in the parking area. Drive aisle and parking area lighting would consist of 15-foot- high, pole-mounted LED lights. Lighting for pedestrian pathways would consist of 3-foot-high bollards.

Landscaping
A landscape buffer would be provided along Tassajara Road with trees and shrubs, including coast live oak (Quercus agrifolia), glossy abelia (Abelia g. “Edward Goucher), Point Reyes creeper (Ceanothus gloriosus), and desert carpet (Acacia redolens). Existing street trees on Tassajara Road would be retained. Landscape plantings, including a variety of trees, shrubs, flowering perennials, and grasses would be provided around the building and in the parking lot.

In addition, the proposed project would include several landscaped stormwater basins, as further described below, totaling approximately 3,460 square feet. Stormwater basins would include Berkeley sedge (Carex divulsa), blue rush (Juncus patens), and blue wild rye (Elymus glaucus). A three-inch layer of wood mulch would be provided between the new right-in only driveway to the proposed parking area and an existing riparian area associated with an unnamed tributary that borders the project site to the south. A rail fence would be provided along the edge of a City-required creek setback to prevent intrusion into the riparian area.

Utilities and Infrastructure
The project site is currently served by existing utilities. Proposed utility connections are discussed below.

Water. Water service is provided by the Dublin San Ramon Services District (DSRSD). The proposed project would include the installation of new water lines on the site that would connect to the existing water main within Tassajara Road. Proposed water lines would include eight-inch water lines for fire suppression and four-inch water lines for domestic water use.

Wastewater. Wastewater service is provided by DSRSD. New four-inch sanitary sewer lines would be installed within the project site and would tie into the existing sanitary sewer main within Tassajara Road.

Stormwater. The project site is currently largely undeveloped and, therefore, contains minimal impervious surfaces. Upon construction of the proposed project, approximately 70 percent of the project site would be covered with impervious surfaces, and the remaining 30 percent 46 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 10

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
would be covered by pervious surfaces, consisting of landscaped and stormwater retention areas. The proposed project would include approximately 3,460 square feet of bioretention area on the project site that would be used for stormwater quality control. The proposed project would include approximately 18 bioretention basins and storm drains throughout the project site, which would connect to the existing stormdrain pipeline in Tassajara Road.

Proposed storm drainage facilities would conform with the Alameda County C.3 Stormwater Technical guidelines and requirements.

Electricity and Gas. Electricity service is provided to the project site by the Pacific Gas & Electric Company (PG&E). The proposed project would include connections to proposed electrical lines within Tassajara Road. In Dublin, no new natural gas service is permitted beginning in January 2023, therefore, new natural gas connections would not be required.

Demolition, Grading and Construction
Excavation for the proposed project would require approximately 3,150 cubic yards of cut and 375 cubic yards of fill, resulting in approximately 2,775 cubic yards of material that would need to be off hauled from the project site. In addition, the proposed project would require demolition of the existing residence and associated outbuildings, resulting in approximately 6,200 square feet of material that would be removed from the project site. It is anticipated that the maximum depth of excavation for building pads would be approximately three feet and the maximum depth of utility trenching would be approximately five feet.

If approved, construction of the proposed project is anticipated to begin in fall of 2023 and be completed by fall of 2024. However, no vertical combustion construction can commence until the Tassajara Road Street Improvements Project
7 being conducted by the City of Dublin
Department of Public Works is completed.

Project Entitlements
The City is the CEQA Lead Agency for the proposed project and will consider the environmental impacts of the proposed project as part of the project approval. The proposed project includes a minor amendment to the Stage 1 and Stage 2 Development Plan adopted by City Council in May 2014 for the Quarry Lane School (Ordinance No. 12-14). Pursuant to Dublin Municipal Code Section 8.32.080, the Planning Commission by means of a Conditional Use Permit may approve minor amendments to an adopted Development Plan upon a finding that the amendment substantially complies with and does not materially change the provisions or intent of the adopted Planned Development Zoning District Ordinance for the site. Thus, permits and approvals required for the proposed project include a Conditional Use Permit and Site Development Review Permit. Ministerial actions would be required for implementation of the

7 The Tassajara Road Street Improvements project provides for design and construction of street improvements on Tassajara Road, between North Dublin Ranch Drive and Quarry Lane School . The project will widen Tassajara Road to a four-lane arterial standard, with bike lanes, sidewalks, landscaped median, stormwater treatment areas, and other associated street improvements. 47 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 11

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
project including issuance/approval of grading permits, encroachment permits, improvement plans, and building permits.

Public Agencies Whose Approval is Required (e.g., permits, financial approval, or participation agreements):
• State Water Resources Control Board (SWRCB) – National Pollutant Discharge Elimination System (NPDES) General Permit for Industrial and Construction Stormwater Discharges and Stormwater Pollution Prevention Plan (SWPPP) approval
Tribal Consultation
In March 2022, the City provided formal notification to the California Native American tribe that has requested notification under Assembly Bill 52. No response was received and no formal tribal consultation was requested.

Environmental Setting
Project Site and Existing Facilities
The site contains native and introduced tree and other vegetation species, as further described in Section 4, Biological Resources of this Initial Study. The site has historically been used as a landscape contracting business with outdoor storage and contains one single-family home and associated outbuildings. Building materials and similar equipment are currently stored on the site. The project site has a gradual slope to the south toward an unnamed tributary. A six-foot chain link fence with a four-foot-tall sheet metal barrier at the base has been installed along the southern property line to provide a wildlife barrier between the project site and adjacent tributary.

Surrounding land uses include Quarry Lane School to the north. To the east of the project site are open space lands that are part of the Northern Drainage Conservation Area (NDCA).

Immediately south of the project site is the unnamed tributary of Tassajara Creek. Single-family residential development and undeveloped open space are located further to the south.

Tassajara Road is located immediately to the west of the project site.

The project site is located immediately north of the unnamed tributary of Tassajara Creek, a major regional watercourse located west of the project site. The tributary was previously part of the project site but was subsequently parceled off to be restored and incorporated into a 245-acre permanent conservation easement with open space lands to the east. The restoration of the creek and the open space lands serve as mitigation for development allowed on portions of the nearby Dublin Ranch development. This mitigation was required by the Regional Water Quality Control Board (RWQCB). Today, the tributary is a separate parcel owned and managed by the Center for Natural Lands Management and is not part of the project site. The tributary is maintained in a natural open space area and provides suitable habitat for several special-status wildlife species. The tributary has been dedicated as a permanent conservation area and is 48 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 12

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
managed accordingly. No development is proposed within or immediately adjacent to the tributary.

49 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 13

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Environmental Checklist
Environmental Factors Potentially Affected by the Project The environmental factors checked below would be potentially affected by this project, involving at least one impact that is a "Potentially Significant Impact" or “Less than Significant with Mitigation Incorporated” as indicated by the checklist on the following pages.

Aesthetics Agricultural and Forestry
Resources X Air Quality
Biological Resources Cultural Resources Energy
Geology / Soils Greenhouse Gas
Emissions Hazards & Hazardous
Materials
Hydrology / Water
Quality Land Use / Planning Mineral Resources
X Noise Population / Housing Public Services
Recreation Transportation / Traffic Tribal Cultural
Resources
Utilities / Service
Systems Wildfire X Mandatory Findings
of Significance

Instructions

1. A brief explanation is required for all answers except "No Impact" answers that are adequately supported by the information sources a lead agency cites in the parentheses following each question (see Source List, attached). A "No Impact" answer is adequately supported if the referenced information sources show that the impact simply does not apply to projects like the one involved (e.g., the project falls outside a fault rupture zone). A "No Impact" answer should be explained where it is based on project-specific factors as well as general standards (e.g., the project will not expose sensitive receptors to pollutants, based on a project-specific screening analysis).

2. All answers must take account of the whole action involved, including off-site as well as on-site, cumulative as well as project-level, indirect as well as direct, and construction as well as operational impacts.

3. Once the lead agency has determined that a particular physical impact may occur, then the checklist answers must indicate whether the impact is potentially significant, less than significant with mitigation, or less than significant. “Potentially Significant Impact” is appropriate if there is substantial evidence that any effect may 50 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 14

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
be significant. If there are one or more "Potentially Significant Impact" entries when the determination is made, an EIR is required.

4. “Negative Declaration: Less Than Significant With Mitigation Incorporated: applies where incorporation of mitigation measures has reduced an effect from “Potentially Significant Impact” to a “Less Than Significant Impact.” The lead agency must describe the mitigation measures, and briefly explain how they reduce the effect to a less than significant level.

5. Earlier Analysis may be used where, pursuant to the tiering, program EIR, or other CEQA process, one or more effects have been adequately analyzed in an earlier EIR or negative declaration. Section 15063(c)(3)(D). In this case a discussion should identify the following on attached sheets:
a. Earlier analysis used. Identify earlier analyses and state where they are available for review.
b. Impacts adequately addressed. Identify which effects from the above checklist were within the scope of and adequately analyzed in an earlier document pursuant to applicable legal standards, and state whether such effects were addressed by mitigation measures based on the earlier analysis. c. Mitigation measures. For effects that are "Less than Significant with Mitigation Incorporated," describe the mitigation measures, which were incorporated or refined from the earlier document and the extent to which they address site- specific conditions for the project.

6. Lead agencies are encouraged to incorporate into the checklist references to information sources for potential impacts (e.g., general plans, zoning ordinances).

Reference to a previously prepared or outside document should, where appropriate, include a reference to the page or pages where the statement is substantiated.

7. Supporting Information Sources: A source list should be attached, and other sources used or individuals contacted should be cited in the discussion.

8. This is only a suggested form, and lead agencies are free to use different formats; however, lead agencies should normally address the questions from this checklist that are relevant to a project's environmental effects in whatever format is selected.

9. The explanation of each issue should identify:
o the significance criteria or threshold, if any, used to evaluate each question; and
o the mitigation measure identified, if any, to reduce the impact to less than significance

10. Have California Native American tribes traditionally and culturally affiliated with the project area requested consultation pursuant to Public Resources Code section 51 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 15

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
21080.3.1? If so, has consultation begun?

Note: Conducting consultation early in the CEQA process allows tribal governments, lead agencies, and project proponents to discuss the level of environmental review, identify and address potential adverse impacts to tribal cultural resources, and reduce the potential for delay and conflict in the environmental review process. (See Public Resources Code section 21083.3.2.) Information may also be available from the California Native American Heritage Commission’s Sacred Lands File per Public Resources Code section 5097.96 and the California Historical Resources Information System administered by the California Office of Historic Preservation. Please also note that Public Resources Code section 21082.3(c) contains provisions specific to confidentiality.

52 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 16

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Determination
On the basis of this initial evaluation:

I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared.

I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because revisions in the project have been made by or agreed to by the project proponent. A SUPPLEMENTAL MITIGATED NEGATIVE DECLARATION will be prepared.

X
I find that the proposed project MAY have a significant effect on the environment and an ENVIRONMENTAL IMPACT REPORT is required.

I find that the proposed project MAY have a potentially significant or a potentially significant unless mitigated impact on the environment, but at least one effect (1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and (2) has been addressed by mitigation measures based on the earlier analysis as described on attached sheets. An ENVIRONMENTAL IMPACT REPORT is required, but it must analyze only the effects that remain to be addressed.

I find that although the proposed project could have a significant effect on the environment, because all potentially significant effects (a) have been analyzed adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the proposed project, nothing further is required.

CITY OF DUBLIN

_________________________________ _____________________________ Linda Ajello, AICP, Senior Planner Date

53 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 17

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Explanation of Environmental Checklist Responses
Aesthetics

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

1. AESTHETICS. Would the project:
a) Have a substantial adverse effect on a scenic vista? X b) Substantially damage scenic resources, including but not limited to trees, rock outcroppings, and historic buildings within a state scenic highway?
X
c) Substantially degrade the existing visual character or quality of public views of the site and its surroundings?

(Public views are those that are experienced from
publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with
applicable zoning and other regulations governing scenic quality
X
d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the
area?
X
Environmental Setting
The proposed project is located in eastern Dublin within the EDSP area. The project site is located just east of Tassajara Road and immediately to the south of the existing Quarry Lane School. The site has historically been used as landscape contracting business with outdoor storage and contains one single-family home and associated outbuildings. Building materials and similar equipment are currently stored on the site. Ruderal (weedy) vegetation is located in the middle and eastern half of the site.

The project site has a gradual slope to the south toward the unnamed tributary. A six-foot chain link fence with a four-foot-tall sheet metal barrier at the base has been installed along the 54 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 18

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
southern property line to provide a wildlife barrier between the project site and adjacent tributary.

No designated State scenic highways are visible from the project site. I-580, located 1.7 miles south of the project site, is an eligible State scenic highway and a designated Alameda County scenic route. I-680, located 3.5 miles west of the project site is an officially designated State scenic highway; however, due to the distance from the site and intervening development, there are no views to the project site from I-680. Tassajara Road, which borders the site to the east, is designated as a scenic route by Alameda County.

The site is located in a developed area. Streetlights, vehicle head and taillights on area roadways, and lighting associated with adjacent development are the existing sources of light and glare in the project area.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to standardized tract development, obscuring distinctive natural features, alteration of hillsides, ridges, and watercourses, alteration of Dublin’s visual identity as a freestanding city, scenic vistas, and scenic routes. All of these impacts were determined to be less than significant with implementation of mitigation measures identified in the Eastern Dublin EIR. The Eastern Dublin EIR determined that impacts associated with the alteration of the rural/open space visual character of the project area and alteration of the visual character of the flatlands would be significant and unavoidable. Thus, a Statement of Overriding Considerations was adopted. The following mitigation measures would apply to the proposed project:

MM 3.8/1.0 Establish a visually distinctive community which preserves the character of the natural landscape by protecting key visual elements and maintaining views from major travel corridors and public spaces.

MM 3.8/2.0 Implement the land use plan for the Project site which emphasizes retention of the predominant natural features, such as ridgelines and watercourses, and sense of openness that characterize eastern Dublin.

MM 3.8/3.0 Preserve the natural open beauty of the hills and other important visual resources, such as creeks and major stands of vegetation.

MM 3.8/4.0 Visual impacts of extensive grading shall be reduced by sensitive engineering design, by using gradual transition from graded areas to natural slopes and by revegetation.

MM 3.8/4.1 Alterations of existing natural contours shall be minimized. Grading shall maintain the natural topography as much as possible. Grading beyond actual development areas shall be for remedial purposes only.
55 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 19

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)

MM 3.8/4.4 Graded slopes shall be re-contoured to resemble existing landforms in the immediate area. Cut and graded slopes shall be revegetated with native vegetation suitable to hillside environments.

MM 3.8/4.5 The height of cut and fill slopes shall be minimized to the greatest degree possible. Grades for cut and fill slopes should be 3:1 or less whenever feasible.

MM 3.8/5.1 Structures shall not be located where they would obstruct scenic views or appear to extend above an identified scenic ridgetop (i.e., silhouetted) when viewed from designated scenic routes.

MM 3.8/6.0 Tassajara Creek and other stream corridors are visual features that have special scenic value for the planning area. The visual character of these corridors should be protected from unnecessary alteration or disturbance and adjoining development should be sites to maintain visual access to the stream corridors.

MM 3.8/7.0 Preserve views of designated open space areas.

MM 3.8/8.1 The City should require that projects with potential impacts on scenic corridors to submit a detailed visual analysis with development project application.

Applicants will be required to submit graphic simulations and/or section drawn from affected travel corridors through the parcel in question, representing typical views of the parcel from scenic routes. The graphic depiction of the location and massing of the structure and associated landscaping can then be used to adjust the project design to minimize the visual impacts.

Project Impacts and Mitigation Measures
(a) Scenic vistas, views
No New Impact. A scenic vista is defined as a viewpoint that provides expansive views of a highly valued landscape for the benefit of the general public. Aesthetic components of a scenic vista generally include: 1) scenic quality; 2) sensitivity level; and 3) view access. According to the EDSP, views within the planning area are dominated by rolling hills; long-range views of scenic vistas are available from the flatlands near I-580 and higher elevations. Due to topographic conditions and residential development, scenic vistas from the surrounding hillsides to the east and west are obscured offering limited views from the project site.

The proposed project would result in the development of a dedicated space for the existing Performing Arts program for Quarry Lane School, with associated parking. Visible elements of the proposed project would include the new auditorium, a new vehicular access point and parking area, metal fencing, landscaping, and lighting. The most evident new features within the viewshed would be the auditorium measuring approximately 30 feet high, at the highest point, which is consistent with the maximum height limits established by the City. 56 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 20

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
The Eastern Dublin EIR contains Figure 3.8-H, Visually Sensitive Ridgelands, depicting portions of the Eastern Dublin area that contains ridges and ridgelands which are considered to be visually sensitive. As identified in the Eastern Dublin EIR, the hillside areas located to the east of the project site are designated as “Visually Sensitive Ridgelands-restricted development.” As described above, the Eastern Dublin EIR determined that development associated with implementation of the EDSP would alter the character of existing scenic vistas and obscure important sightlines. These impacts were determined to be less than significant with implementation of mitigation measures identified in the Eastern Dublin EIR and listed above.

Although the proposed project would be visible from public vantage points, including Tassajara Road, it would not impede views from Tassajara Road to the scenic ridgelines to the east, which are already obscured by existing development and roadway infrastructure. The mass and scale of proposed facilities would be consistent with the existing school facility to the north and site topography, so as not to obstruct or impair scenic vistas of the ridgelines and hillsides in the project area. Landscaping along Tassajara Road would provide further screening of proposed built features. Consistent with Mitigation Measure 3.8/5.0, identified in the Eastern Dublin EIR, the proposed project would be required to undergo site-specific design review to ensure the project is consistent with City of Dublin design standards, property development regulations and performance standards related to aesthetics and to lessen the severity of visual changes resulting from the proposed project. Further, the proposed project would be required to implement other Mitigation Measures (MM 3.8/3.0, MM 3.8/4.0, MM 3.8/4.1, MM 3.8/4.4, MM 3.8/4.5, MM 3.8/5.1) identified in the Eastern Dublin EIR, which include design features to minimize visual impacts (e.g., sensitive grading, sensitive engineering design, revegetation).

Therefore, the project does not propose substantial changes affecting scenic vistas that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified impacts to scenic vistas/views, nor result in new significant impacts.

The Eastern Dublin EIR determined that implementation of the EDSP has the potential to alter visual resources along scenic routes, including Tassajara Road (Impact 3.8/J). With 57 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 21

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
implementation of Mitigation Measures 3.8/8.0 and 8.1 which require the City to adopt scenic corridor policies and review procedures for projects within the scenic corridor viewshed and to require a detailed visual analysis for projects with potential impacts on scenic corridors, this impact was determined to be less than significant.

No substantial damage to scenic resources within a scenic corridor would occur as a result of implementation of the proposed project. Proposed improvements would include demolition of the existing structures on the site and development of a new performing arts center, entry, surface parking, and associated landscaping and safety lighting. The proposed project would not impact historic structures, or rock outcroppings, as these resources are not present on the project site. The proposed project would maintain the existing stream setback established for the tributary that borders the site to the south and would preserve existing trees within the setback area. In addition, new landscaping, including tree planting, is proposed along Tassajara Road and within the project site. Further, the mitigation measures identified in the Eastern Dublin EIR and the visual policies in the EDSP would apply to the proposed project and the proposed project would be required to undergo site-specific design review to ensure the project is consistent with City of Dublin design standards.

Therefore, the project does not propose substantial changes affecting scenic resources that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified impacts to scenic resources, nor result in new significant impacts.

With adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR there would be no new or substantially more severe significant impacts to scenic resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required..
(c) Substantially degrade the visual character of public views of the site or surrounding area No New Impact. Implementation of the proposed project would result in the demolition of the existing structures on the project site and redevelopment of the site with a performing arts center and associated improvements (e.g., parking, landscaping, and lighting). The proposed project has been designed to be similar to and consistent with the existing Quarry Lane School facility. Landscaping would be provided along Tassajara Road and throughout the proposed parking area to provide additional visual screening from public vantage points. In addition, the proposed project would preserve existing visual features on the project site, including the riparian area associated with the unnamed tributary and provide new visual elements (e.g., entries, landscaping) to enhance and complement project improvements.

As described above, the Eastern Dublin EIR determined that visual impacts associated with the alteration of the rural/open space character of the project area and alteration of the visual character of the flatlands would be significant and unavoidable and therefore a Statement of 58 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 22

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Overriding Considerations was adopted for the project. Other impacts to visual resources, including impacts to distinctive natural features, scenic vistas, and scenic routes, and alteration of hillsides, ridges, and watercourses were determined to be less than significant with implementation of mitigation measures identified in the Eastern Dublin EIR.

Consistent with the findings of the Eastern Dublin EIR, the proposed project would alter the visual character of the project site, which would be converted from residential/commercial development to public use/school. However, the mass and architectural style of the proposed project would be consistent with the visual character of the immediately adjacent existing school facility. In addition, existing vegetation associated with the unnamed tributary, which defines the site’s southern boundary would be preserved and new landscaping, including tree planting, is proposed along Tassajara Road and within the project site, which would enhance the visual quality of the project site. The mitigation measures identified in the Eastern Dublin EIR and the visual policies in the City of Dublin General Plan would apply to the proposed project. In addition, the proposed project would be required to undergo site-specific design review to ensure the project is consistent with City of Dublin design standards, property development regulations and performance standards related to aesthetics and to lessen the severity of visual changes resulting from the proposed project. These existing requirements would include review of the physical improvements to the project site, including the overall building scale, massing, and design to ensure compatibility and compliance with City requirements governing scenic quality.

Therefore, the project does not propose substantial changes affecting visual character that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified impacts to visual character, nor result in new significant impacts.

With adherence to applicable regulatory requirements (e.g., design review) and mitigation measures identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to visual character beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(d) Create a new source of substantial light or glare
Less Than Significant Impact. Streetlights, vehicle head and taillights on area roadways, and lighting associated with adjacent development are the existing sources of light and glare in the vicinity of the project site. The proposed project would include demolition of the existing structures on the project site and development of a new auditorium with associated parking, landscaping and other improvements. Safety and security lighting would be provided along pedestrian pathways, around the building and in the parking area. Drive aisle and parking area lighting would consist of 15-foot-high, pole-mounted LED lights. Lighting for pedestrian pathways would consist of 3-foot-high bollards.
59 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 23

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
At night, these new sources of light would be visible from a distance; however, the addition of new light sources associated with the proposed project would generally blend in with existing development on the project site and would represent a continuation of the existing development within this area of the City.

Light and glare impacts were not identified in the Eastern Dublin EIR. Therefore, development of the proposed project would result in a change in light and glare conditions as compared to the project evaluated in the Eastern Dublin EIR and would result in impacts that were not identified in the Eastern Dublin EIR. However, the proposed project would be required to comply with the lighting policies outlined in the City’s Municipal Code, which establish minimum safety lighting levels and require light fixtures to be directed downward and away from adjoining properties, so that no on-site light fixture would directly illuminate any off-site areas. With adherence to these requirements, the proposed project would not create a new source of substantial light or glare, which would adversely affect day or nighttime views in the area. Therefore, this impact would be less than significant.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to aesthetics beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

60 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 24

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Agricultural and Forestry Resources

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

2. AGRICULTURE RESOURCES. In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Department of Conservation as an optional mo del to use in assessing impacts on agriculture and farmland. Would the project:
a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the
maps prepared pursuant to the Farmland Mapping and
Monitoring Program of the California Resources Agency,
to non-agricultural use?
X
b) Conflict with existing zoning for agricultural use, or a Williamson Act contract?
X
c) Involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland to non-agricultural use or conversion of
forest land to non-forest use?
X
d) Result in the loss of forest land or conversion of forest land to non-forest use?
X
e) Involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to non-agricultural use or conversion of
forest land to non-forest use?
X
Environmental Setting
The project site is not used for agricultural production and is not designated Prime Farmland, Unique Farmland, or Farmland of Statewide Importance on maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency. The surrounding area is characterized by undeveloped open space and residential uses.

The Farmland Mapping and Monitoring Program categorizes the project site as Urban and Built- Up Land and Grazing Land.

Urban and Built-Up Land is defined as land that is occupied by structures with a building density of at least one unit to 1.5 acres, or approximately six structures to a 10-acre parcel. Examples of Urban and Built-Up Land include residential, industrial, commercial, institutional facilities, cemeteries, airports, golf courses, sanitary landfills, sewage treatment, and water control structures. Grazing Land is defined as land on which the existing vegetation is suited to the grazing of livestock. 61 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 25

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
No forest land exists on the project site; however, riparian vegetation associated with the unnamed tributary borders the project site to the south.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified less than significant impacts related to discontinuation of agricultural uses, loss of farmlands of local importance, indirect impacts resulting from non- renewal of Williamson Act contracts, and conversion of non-urban lands. Although the Eastern Dublin EIR determined that the loss of agricultural uses within the EDSP was less than significant, the Eastern Dublin EIR identified the cumulative loss of agricultural lands and open space as a significant unavoidable impact and a Statement of Overriding Considerations was adopted for this impact.

Project Impacts and Mitigation Measures
(a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (farmland)
No New Impact. As described above, the project site is not used for agricultural production and is not designated Prime Farmland, Unique Farmland, or Farmland of Statewide Importance.

Therefore, the proposed project would not convert Prime Farmland, Unique Farmland, Farmland of Statewide Importance, or any other type of farmland to non-agricultural uses. No new impacts or substantially more severe significant impacts to Prime Farmland, Unique Farmland, or Farmland of Statewide Importance would occur. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts to Prime Farmland, Unique Farmland or Farmland of Statewide Importance beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met.

Therefore, no further environmental review is required. (b) Conflict with existing zoning for agricultural use or a William Act contract No New Impact. The project site is currently classified as Planned Development (PD) Ordinance No. 24-00 and Ordinance No. 12-14 on the City’s Zoning Map. The project site is not currently used for agricultural purposes, not zoned for agricultural uses, and is not protected by, or eligible for, a Williamson Act contract. Therefore, the proposed project would not conflict with existing zoning for agricultural uses or Williamson Act contracts. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to zoning for agricultural use or Williamson Act contract beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
62 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 26

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
(c) Conversion of land from Farmland or forest use
No New Impact. As described above, the project site is currently classified as PD Ordinance No. 24-00 and Ordinance No. 12-14 on the City’s Zoning Map, which allows for residential uses on the project site. Neither the project site nor the surrounding area is zoned for agricultural use, forest land, timberland, or timberland production. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to conversion of farmland or forest land beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(d) Result in loss of forest land or conversion of forest No New Impact. No forest or timberland exists on the project site or in the surrounding area and the proposed project would not result in the loss of forest land or the conversion of forest land to non-forest use. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to conversion of forest land beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (e) Conversion of Farmland, to non-agricultural use or conversion of forest land to non-forest use
No New Impact. The project site is not currently used as farmland or forest land. The proposed project would not result in the conversion of farmland on or off the project site to non- agricultural uses because there are no agricultural uses on or in the immediate vicinity of the project site. Likewise, the proposed project would not result in impacts related to changes in the existing environment that could result in the conversion of agricultural land to non- agricultural uses. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR.

Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to conversion of farmland or forest land beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to agricultural and forestry resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other 63 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 27

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
California Department of Conservation (DOC). California Farmland Conservancy. California Important Farmland Finder. Website: maps.conservation.ca.gov/dlrp/ciff/ (accessed April 3, 2023).

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.
64 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 28

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Air Quality

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

3. AIR QUALITY. Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the following determinations. Would the project:
a) Conflict with or obstruct implementation of the
applicable air quality plan? X
b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non- attainment under an applicable federal or state ambient air quality standard?
X
c) Expose sensitive receptors to substantial pollutant
concentrations?
X
d) Result in other emissions (such as those leading to
odors) adversely affecting a substantial number of
people?
X
Environmental Setting
The proposed project is located in the City of Dublin and is within the jurisdiction of the Bay Area Air Quality Management District (BAAQMD), which regulates air quality in the San Francisco Bay Area. Air quality conditions in the San Francisco Bay Area have improved significantly since BAAQMD was created in 1955. Ambient concentrations of air pollutants and the number of days during which the region exceeds air quality standards have fallen substantially. In Dublin, and the rest of the Air Basin, exceedances of air quality standards occur primarily during meteorological conditions conducive to high pollution levels, such as cold, windless winter nights or hot, sunny summer afternoons.

Within BAAQMD, ambient air quality standards for ozone, carbon monoxide (CO), nitrogen dioxide (NO
2), sulfur dioxide (SO2), particulate matter (PM10, PM2.5), and lead (Pb) have been set by both the State of California and federal government. The State has also set air quality standards for sulfate and visibility. BAAQMD is listed as a State non-attainment area for ozone and particulate matter air quality standards. BAAQMD is classified as a non-attainment area for the federal ozone 8-hour standard and non-attainment for the federal PM2.5 24-hour standard. 65 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 29

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified that mobile source CO emissions would be less than significant and construction dust emissions would be less than significant with implementation of mitigation measures identified in the Eastern Dublin EIR. In addition, the Eastern Dublin EIR identified that impacts associated with construction equipment/vehicle emissions, mobile source reactive organic gases (ROG) and nitrogen oxide (NOx) emissions, and stationary source emissions would be significant and unavoidable. Thus, a Statement of Overriding Considerations was adopted. The following mitigation measures would apply to the proposed project:

MM 3.11/1.0 The City of Dublin shall:
 Require watering in late morning and at the end of the day; the frequency of watering should increase if wind exceeds 15 mph. Watering should include all excavated and graded areas and material to be transported off-site. Use recycled or other non-potable water resources where feasible.  Require daily cleanup of mud and dust carried onto street surfaces by construction vehicles.
 Require excavation haul trucks to use tarpaulins or other effective covers.  Require that, upon completion of construction, measures shall be taken to reduce wind erosion. Replanting and repaving should be completed as soon as possible.
 Require that unnecessary idling of construction equipment is avoided.  Require that, after grading is completed, fugitive dust on exposed soil surfaces shall be controlled using the following methods:
o All inactive portions of the construction site should be seeded and watered until grass growth is evident.
o Require that all portions of the site shall be sufficiently watered to prevent excessive amounts of dust.
o Require that, at all times, the following procedures should be followed:
 On-site vehicle speed shall be limited to 15 mph.
 Use of petroleum-based palliative shall meet the road oil requirements of the Air Quality District. Non -petroleum-based tackifiers may be required by the Public Works Director.
 The Public Works Department will handle all dust complaints. The Public Works Director may require the services of an air quality consultant to 66 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 30

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
advice the City on the severity of the dust problem and additional ways to mitigate impacts on residents, including temporarily halting project construction. Dust concerns in adjoining communities as well as the City of Dublin shall be controlled. Control measures shall be related to wind conditions. Air quality monitoring of PM levels shall be provided as directed by the Public Works Director in Dublin.

MM 3.11/2.0 Minimize construction interference with regional non-project traffic movement by:
 Scheduling receipt of construction materials to non-peak travel periods.  Routing construction traffic through areas of least impact sensitivity.  Limiting lane closures and detours to off-peak travel periods.  Providing ride-share incentives for contractor and subcontractor personnel.

MM 3.11/3.0 Require emissions control from on-site equipment through a routine mandatory program of low-emissions tune-ups.

MM 3.11/4.0 Require preparation of a construction impact reduction plan that incorporates all proposed air quality mitigation strategies with clearly defined responsibilities for plan implementation and supervision.

MM 3.11/5.0 Exercise interagency cooperation with a sub-regional and on a regional basis to integrate air quality planning efforts with transportation, transit, and other infrastructure plans.

MM 3.11/6.0 Maintain consistency among specific development plans and regional transportation and growth management plans.

MM 3.11/7.0 Implement transportation demand management (TDM) techniques to reduce mobile source emissions.

MM 3.11/8.0 Optimize the existing transportation system to reduce congestion and shift travel to non-peak travel periods.

MM 3.11/9.0 Coordinate levels of growth with roadway transportation facilities improvements to accommodate travel demand without inducing demand by providing excess system capacity.

MM 3.11/10.0 Encourage mixed-use development that provides housing, jobs, goods and services in close proximity.

67 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 31

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
MM 3.11/11.0 Require linkage between growth of housing and job opportunities consistent with a positive sub-regional contribution to jobs/housing ratio balances.

MM 3.11/12.0 Stationary source emissions associated with Project development should also be minimized where feasible to reduce overall cumulative impacts. Minimum energy conservation standards are established in Title 24 of the California Code of Regulations. Design practice can achieve a slightly greater level of conservation than the minimum standards. A conservation target level for some fraction of Eastern Dublin development of 10 percent above the minimum should be implemented as an appropriate acknowledgement of the desired "environmentally-friendly" community character for this Project.

MM 3.11/13.0 Solid waste recycling should be included in all development planning to ensure that recycling criteria specified in AB-939 can be most easily met.

Project Impacts and Mitigation Measures
(a) Consistency with air quality plans
Less Than Significant Impact. BAAQMD’s Clean Air Plan is a comprehensive plan to improve Bay Area air quality and protect public health. The Clean Air Plan defines control strategies to reduce emissions and ambient concentrations of air pollutants; safeguard public health by reducing exposure to air pollutants that pose the greatest heath risk, with an emphasis on protecting the communities most heavily affected by air pollution; and reduce greenhouse gas (GHG) emissions to protect the climate. Consistency with the Clean Air Plan can be determined if the project: (1) supports the goals of the Clean Air Plan; (2) includes applicable control measures from the Clean Air Plan; and (3) would not disrupt or hinder implementation of any control measures from the Clean Air Plan.

Clean Air Plan Goals. The primary goals of the Bay Area Clean Air Plan are to: attain air quality standards, reduce population exposure and protect public health in the Bay Area, and reduce GHG emissions and protect climate.

BAAQMD has established significance thresholds for project construction and operational impacts at a level at which the cumulative impact of exceeding these thresholds would have an adverse impact on the region’s attainment of air quality standards. The health and hazards thresholds were established to help protect public health. As discussed below in Section 3b, implementation of the proposed project would result in less-than-significant operation-period emissions and, with implementation of implementation of Mitigation Measures 3.11/2.0 and

3.11/3.0 from the Eastern Dublin EIR, the project would result in less-than-significant construction-period emissions. Therefore, the project would not conflict with the Clean Air Plan goals.

Clean Air Plan Control Measures. The control strategies of the Clean Air Plan include measures in the following categories: Stationary Source Measures, Transportation Measures, Energy 68 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 32

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Measures, Building Measures, Agriculture Measures, Natural and Working Lands Measures, Waste Management Measures, Water Measures, and Super-GHG Pollutants Measures.

Stationary Source Control Measures. The Stationary Source Control Measures, which are designed to reduce emissions from stationary sources such as metal melting facilities, cement kilns, refineries, and glass furnaces, are incorporated into rules adopted by BAAQMD and then enforced by BAAQMD’s Permit and Inspection programs. Since the project would not include any stationary sources of emissions, the Stationary Source Control Measures of the Clean Air Plan are not applicable to the project.

Transportation Control Measures. BAAQMD identifies Transportation Control Measures as part of the Clean Air Plan to decrease emissions of criteria pollutants, toxic air contaminants (TACs), and GHGs by reducing demand for motor vehicle travel, promoting efficient vehicles and transit service, decarbonizing transportation fuels, and electrifying motor vehicles and equipment. The project would construct a performing arts center on a site immediately adjacent to the existing Quarry Lane School. The proposed project would provide a dedicated space for the existing performing arts program but would not include any growth in total student enrollment or an expansion of existing school operations. In addition, the proposed project would not result in a change in trip generation. Therefore, the project would not conflict with the BAAQMD’s initiatives to reduce vehicle trips and vehicle miles traveled (VMT) and would increase the use of alternate means of transportation.

Energy Control Measures. The Clean Air Plan also includes Energy Control Measures, which are designed to reduce emissions of criteria air pollutants, TACs, and GHGs by decreasing the amount of electricity consumed in the Bay Area, as well as decreasing the carbon intensity of the electricity used by switching to less GHG-intensive fuel sources for electricity generation.

Since these measures apply to electrical utility providers and local government agencies (and not individual projects), the Energy Control Measures of the Clean Air Plan are not applicable to the project.

Building Control Measures. BAAQMD has authority to regulate emissions from certain sources in buildings such as boilers and water heaters but has limited authority to regulate buildings themselves. Therefore, the strategies in the control measures for this sector focus on working with local governments that do have authority over local building codes, to facilitate adoption of best GHG control practices and policies. The proposed project would be required to comply with the latest California Green Building Standards Code (CALGreen) standards. Therefore, the Building Control Measures of the Clean Air Plan are not applicable to the project.

Agriculture Control Measures. The Agriculture Control Measures are designed to primarily reduce emissions of methane. Since the project does not include any agricultural activities, the Agriculture Control Measures of the Clean Air Plan are not applicable to the project.

Natural and Working Lands Control Measures. The Natural and Working Lands Control Measures focus on increasing carbon sequestration on rangelands and wetlands, as well as encouraging local governments to enact ordinances that promote urban-tree plantings. Since 69 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 33

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
the project does not include the disturbance of any rangelands or wetlands, the Natural and Working Lands Control Measures of the Clean Air Plan are not applicable to the project.

Waste Management Control Measures. The Waste Management Measures focus on reducing or capturing methane emissions from landfills and composting facilities, diverting organic materials away from landfills, and increasing waste diversion rates through efforts to reduce, reuse, and recycle. The project would comply with local requirements for waste management (e.g., recycling and composting services). Therefore, the project would be consistent with the Waste Management Control Measures of the Clean Air Plan.

Water Control Measures. The Water Control Measures focus on reducing emissions of criteria pollutants, TACs, and GHGs by encouraging water conservation, limiting GHG emissions from publicly owned treatment works (POTWs), and promoting the use of biogas recovery systems.

Since these measures apply to POTWs and local government agencies (and not individual projects), the Water Control Measures are not applicable to the project.

Super-GHG Control Measures. The Super-GHG Control Measures are designed to facilitate the adoption of best GHG control practices and policies through BAAQMD and local government agencies. Since these measures do not apply to individual projects, the Super-GHG Control Measures are not applicable to the project.

Clean Air Plan Implementation. As discussed above, the proposed project would implement the applicable measures outlined in the Clean Air Plan, including Transportation Control Measures.

Therefore, the project would not disrupt or hinder implementation of a control measure from the Clean Air Plan. The Eastern Dublin EIR did not evaluate consistency with the applicable clean air plan; therefore, development of the proposed project would result in impacts that were not identified in the Eastern Dublin EIR. However, because the proposed project would be consistent with the Clean Air Plan, this impact would be less than significant. (b) Violate air quality standards or cause cumulatively considerable air pollutants No New Impact. Both State and federal governments have established health-based Ambient Air Quality Standards for six criteria air pollutants: CO, ozone (O 3), NO2, SO2, Pb, and suspended
particulate matter (PM). These standards are designed to protect the health and welfare of the populace with a reasonable margin of safety. As identified above, BAAQMD is under State non- attainment status for ozone, PM
10, and PM2.5 standards. The Air Basin is also classified as non- attainment for both the federal ozone 8-hour standard and the federal PM2.5 24-hour standard.

Air quality standards for the proposed project are regulated by the BAAQMD CEQA Air Quality Guidelines. According to the BAAQMD CEQA Air Quality Guidelines, to meet air quality standards for operational-related criteria air pollutant and air precursor impacts, the project must not:
 Contribute to CO concentrations exceeding the State ambient air quality standards; 70 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 34

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Generate average daily construction emissions of ROG, NOx, or PM2.5 greater than 54 pounds per day or PM10 exhaust emissions greater than 82 pounds per day; or  Generate average operational emissions of ROG, NOx or PM2.5 of greater than 10 tons per year or 54 pounds per day or PM10 emissions greater than 15 tons per year or 82 pounds per day.

The following sections describe the proposed project’s construction- and operation-related air quality impacts and CO impacts.

Construction Emissions. As discussed above, the Eastern Dublin EIR found that that proposed development would result in significant and unavoidable impacts associated with construction activities. Mitigation Measures 3.11/1.0, 3.11/2.0, 3.11/3.0, and 3.11/4.0 were identified, but were insufficient to reduce impacts to a less-than-significant level and therefore a Statement of Overriding Considerations was adopted for the project.

During construction of the proposed project, construction dust would affect local and regional air quality at various times during the build-out period of the project. The dry, windy climate of the area during the summer months combined with the fine, silty soils of the region create a high potential for dust generation. Emissions during the grading phase of construction are primarily associated with the exhaust of large earth moving equipment and the dust which is generated through grading activities. Emissions in later stages of construction are primarily associated with construction employee commute vehicles, asphalt paving, mobile equipment, stationary equipment, and architectural coatings.

The effects of construction activities would be increased dustfall and locally elevated levels of PM
10 near the construction activity. Depending on the weather, soil conditions, the amount of activity taking place, and nature of dust control efforts, these impacts could affect existing or future residential areas within or near the project.

Water or other soil stabilizers can be used to control dust, resulting in emission reductions of 50 percent or more. BAAQMD has established standard measures for reducing fugitive dust emissions (PM
10). With the implementation of these Basic Construction Mitigation Measures, fugitive dust emissions from construction activities would not result in adverse air quality impacts.

In addition to dust related PM
10 emissions, heavy trucks and construction equipment powered by gasoline and diesel engines would generate CO, SO2, NOx, ROGs and some soot particulate (PM2.5 and PM10) in exhaust emissions. If construction activities were to increase traffic congestion in the area, CO and other emissions from traffic would increase slightly while those vehicles are delayed. These emissions would be temporary and limited to the immediate area surrounding the construction site.

Construction emissions were estimated for the project using the California Emissions Estimator Model (CalEEMod) version 2022.1, consistent with BAAQMD recommendations. Construction of the proposed project is anticipated to begin in fall of 2023 and be completed by fall of 2024, 71 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 35

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
which was included in CalEEMod. In addition, the project would require the off-haul of approximately 2,775 cubic yards of material which was also included in CalEEMod. The proposed project would require demolition of the existing residence and associated outbuildings, resulting in approximately 6,200 square feet of material that would be removed from the project site, which was included in CalEEMod. In addition, this analysis assumes the use of Tier 2 construction equipment. Construction-related emissions are presented in Table A.

CalEEMod output sheets are included in Appendix A.

Table A: Project Construction Emissions in Pounds Per Day Project Construction ROG NOx
Exhaust
PM10
Fugitive
Dust PM
10 Exhaust
PM

2.5 Fugitive
Dust PM

2.5 Average Daily Emissions 0.8 9.9 0.4 0.3 0.4 0.1
BAAQMD Thresholds 54.0 54.0 82.0 BMP 54.0 BMP
Exceed Threshold? No No No No No No
Source: LSA (January 2023).

BMP = Best Management Practices

As shown in Table A, construction emissions associated with the project would be less than significant for ROG, NOx, PM2.5, and PM10 exhaust emissions. BAAQMD requires the implementation of the BAAQMD’s Basic Construction Mitigation Measures (best management practices) to minimize construction fugitive dust impacts. The Eastern Dublin EIR identified Mitigation Measure 3.11/1.0 to minimize emission of dust. BAAQMD has since adopted newer and more restrictive standards to reduce construction dust and construction vehicle emissions to which the project applicant must adhere in order to reduce this construction impact to a less-than-significant level. Mitigation Measure 3.11-1.0 has been modified (with additions in double-underline and deletions in strikethrough), as shown below, to include the latest BAAQMD Basic Construction Measures. Mitigation Measures 3.11/2.0, 3.11/3.0, and 3.11/4.0 would still be applicable to the proposed project.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Require that unnecessary idling of construction equipment is avoided.  Require that, after grading is completed, fugitive dust on exposed soil surfaces shall be controlled using the following methods:
o All inactive portions of the construction site should be seeded and watered until grass growth is evident.
o Require that all portions of the site shall be suffic iently watered to prevent excessive amounts of dust.
o Require that, at all times, the following procedures should be followed:
 On-site vehicle speed shall be limited to 15 mph.
 Use of petroleum-based palliative shall meet the road oil requirements of the Air Quality District. Non -petroleum-based tackifiers may be required by the Public Works Director.
 The Public Works Department will handle all dust complaints. The Public Works Director may require the services of an air quality consultant to advice the City on the severity of the dust problem and additional ways to mitigate impacts on residents, including temporarily halting project construction. Dust concerns in adjoining communities as well as the City of Dublin shall be controlled. Control measures shall be related to wind conditions. Air quality monitoring of PM levels shall be provided as directed by the Public Works Director in Dublin.

o All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall be watered two times per day. o All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
o All visible mud or dirt tracked-out onto adjacent public roads shall be removed using wet power vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited.
o All vehicle speeds on unpaved roads shall be limited to 15 mph. o All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible.
o Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used.
o Idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to 5 minutes (as required by the California airborne toxics control measure Title 13, Section 2485 of California 73 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 37

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Code of Regulations [CCR]). Clear signage shall be provided for construction workers at all access points.
o All construction equipment shall be maintained and properly tuned in accordance with manufacturer's specifications. All equipment shall be checked by a certified mechanic and determined to be running in proper condition prior to operation.
o A publicly visible sign shall be posted with the telephone number and person to contact at the City of Dublin regarding dust complaints. This person shall respond and take corrective action within 48 hours. BAAQMD's phone number shall also be visible to ensure compliance with applicable regulations.

With implementation of Mitigation Measure 3.11/1.0, as modified above, and Mitigation Measures 3.11/2.0, 3.11/3.0 and 3.11/4.0, the proposed project would not result in any new or more severe impacts related to construction period emissions compared to those previously identified in the Eastern Dublin EIR.

Operational Emissions. The Eastern Dublin EIR found that proposed development would result in significant and unavoidable impacts associated with project operation activities. Mitigation Measures 3.11/5.0, 3.11/6.0, 3.11/7.0, 3.11/8.0, 3.11/9.0, 3.11/10.0, and 3.11/11.0 were identified but were insufficient to reduce impacts to a less than significant level and therefore a Statement of Overriding Considerations was adopted for the project.

Long-term air pollutant emission impacts associated with the proposed project are those related to mobile sources (e.g., vehicle trips), energy sources (e.g., electricity and natural gas), and area sources (e.g., architectural coatings and the use of landscape maintenance equipment).

PM
10 emissions result from running exhaust, tire and brake wear, and the entrainment of dust into the atmosphere from vehicles traveling on paved roadways. Entrainment of PM10 occurs when vehicle tires pulverize small rocks and pavement and the vehicle wakes generate airborne dust. The contribution of tire and brake wear is small compared to the other PM emission processes. Gasoline-powered engines have small rates of particulate matter emissions compared with diesel-powered vehicles. The project would construct a performing arts center immediately adjacent to the existing Quarry Lane School site. The proposed project would provide a dedicated space for the existing performing arts program but would not include any growth in total student enrollment or an expansion of existing school operations. As discussed in Section 17, Transportation, the proposed project would not result in a change in trip generation; therefore, the proposed project would not result in mobile source emissions.

Energy source emissions result from activities in buildings for which natural gas is used. The quantity of emissions is the product of usage intensity (i.e., the amount of gas) and the emission factor of the fuel source. No new natural gas service is permitted beginning in January 74 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 38

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
2023, so no new natural gas connections would be required. As such, the proposed project would not result in energy source emissions.

Typically, area source emissions consist of direct sources of air emissions located at the project site, including architectural coatings and the use of landscape maintenance equipment.

Emission estimates for operation of the project were calculated using CalEEMod. Model results are shown in Table B. The primary emissions associated with the project are regional in nature, meaning that air pollutants are rapidly dispersed on release or, in the case of vehicle emissions associated with the project, emissions are released in other areas of the Air Basin. The daily and annual emissions associated with project operational trip generation, energy, and area sources are identified in Table B for ROG, NO
x, PM10, and PM2.5.

Table B: Project Operational Emissions
ROG NOx PM10 PM2.5
Pounds Per Day
Area Source Emissions 0.4 <0.1 <0.1 <0.1
Energy Source Emissions 0.0 0.0 0.0 0.0
Mobile Source Emissions 0.0 0.0 0.0 0.0
Total Project Emissions 0.4 <0.1 <0.1 <0.1
BAAQMD Thresholds 54.0 54.0 82.0 54.0
Exceed Threshold? No No No No
Tons Per Year
Area Source Emissions 0.1 <0.1 <0.1 <0.1
Energy Source Emissions 0.0 0.0 0.0 0.0
Mobile Source Emissions 0.0 0.0 0.0 0.0
Total Project Emissions 0.1 <0.1 <0.1 <0.1
BAAQMD Thresholds 10.0 10.0 15.0 10.0
Exceed Threshold? No No No No
Source: LSA (January 2023).

The results shown in Table B indicate the project would not exceed the significance criteria for daily or annual ROG, NOx, PM10 or PM2.5 emissions; therefore, the proposed project would not have a significant effect on regional air quality.
75 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 39

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Localized CO Impacts. The Eastern Dublin EIR found that the project would generate additional traffic volumes, increasing local levels of carbon monoxide. However, the Eastern Dublin EIR determined that such increases would be below the standard of air quality significance.

Emissions and ambient concentrations of CO have decreased dramatically in the Bay Area with the introduction of the catalytic converter in 1975. No exceedances of the State or federal CO standards have been recorded at Bay Area monitoring stations since 1991. BAAQMD’s 2017 CEQA Guidelines include recommended methodologies for screening and quantifying concentrations of localized CO levels for intersections that would be in a project vicinity. A screening level analysis using guidance from the BAAQMD CEQA Guidelines was performed to determine the impacts of the project. The screening methodology provides a conservative indication of whether the implementation of a proposed project would result in significant CO emissions. According to BAAQMD’s CEQA Guidelines, a proposed project would result in a less- than-significant impact to localized CO concentrations if the following screening criteria are met:
 The project is consistent with an applicable congestion management program established by the county congestion management agency for designated roads or highways, and the regional transportation plan and local congestion management agency plans.
 Project traffic would not increase traffic volumes at affected intersections to more than 44,000 vehicles per hour.
 The project would not increase traffic volumes at affected intersections to more than 24,000 vehicles per hour where vertical and/or horizontal mixing is substantially limited (e.g., tunnel, parking garage, bridge underpass, natural or urban street canyon, or below-grade roadway).

Implementation of the proposed project would not conflict with the Alameda County Transportation Commission’s congestion management programs. The proposed project would not result in a change in trip generation; therefore, the project would not contribute to peak hour traffic volumes at intersections in the vicinity of the project site would be well below 44,000 vehicles per hour. Therefore, the proposed project would not result in localized CO concentrations that exceed State or federal standards.

With adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, as modified above, there would be no new or substantially more severe significant impacts to air quality resources beyond what has been analyzed in the Eastern Dublin EIR.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
concentrations beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met for this project impact. Therefore, no further environmental review is required.
(c) Expose sensitive receptors to pollutant concentrations Less Than Significant Impact with Mitigation Incorporated. Sensitive receptors are defined as residential uses, schools, daycare centers, nursing homes, and medical centers. Individuals particularly vulnerable to diesel particulate matter include children, whose lung tissue is still developing, and the elderly, who may have serious health problems that can be aggravated by exposure to diesel particulate matter. Exposure from diesel exhaust associated with construction activity contributes to both cancer and chronic non-cancer health risks.

The project site is located in an urban area in close proximity to existing residential uses that could be exposed to diesel emission exhaust during the construction period. In addition, the project site is located at the existing Quarry Lane School, and construction could expose students to diesel emission exhaust.

To estimate the potential cancer risk from project construction equipment exhaust (including diesel particulate matter), a dispersion model was used to translate an emission rate from the source location to a concentration at the receptor location (i.e., a nearby residential land use).

Dispersion modeling varies from a simpler, more conservative screening-level analysis to a more complex and refined detailed analysis. This refined assessment was conducted using the California Air Resources Board (CARB) exposure methodology, with the air dispersion modeling performed using the United States Environmental Protection Agency (USEPA) dispersion model AERMOD. The model provides a detailed estimate of exhaust concentrations based on site and source geometry, source emissions strength, distance from the source to the receptor, and site- specific meteorological data. Table C, below, identifies the results of the analysis utilizing the standard Tier 2 construction equipment. Model snap shots of the sources are provided in Appendix B.

Table C: Unmitigated Inhalation Health Risks from Project Construction to Off-Site Receptors

Carcinogenic
Inhalation
Health Risk in
One Million
Chronic
Inhalation
Hazard Index
Acute
Inhalation
Hazard Index
Annual PM2.5
Concentration
(µg/m3)
School Receptor Risk 15.16 0.057 0.000 0.284
Residential Receptor Risk 14.55 0.015 0.000 0.074
BAAQMD Significance Threshold 10.0 1.0 1.0 0.30
Exceed Threshold? Yes No No No
Source: LSA (January 2023).

BMP = Best Management Practices

77 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 41

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
As shown in Table C, the maximum cancer risk for the school receptor maximally exposed individual (MEI) would be 15.16 in one million, which would exceed the BAAQMD cancer risk threshold of 10 in one million. The residential receptor MEI risk would be lower at 14.55 in one million, but which would also exceed the threshold. The total chronic hazard index would be

0.057 for the school receptor MEI and 0.015 for the residential receptor MEI, which is below the threshold of 1.0. In addition, the total acute hazard index would be nominal (0.000), which would also not exceed the threshold of 1.0. The results of the analysis indicate that the total PM2.5 concentration would be 0.284 µg/m3 for the school receptor MEI and 0.074 for the residential receptor MEI, both of which would not exceed the BAAQMD significance threshold of 0.30 µg/m3. As indicated above, the cancer risk of 15.16 in one million for the school receptor MEI and 14.55 in one million for the residential receptor MEI would exceed BAAQMD thresholds. Therefore, implementation of Project-Specific Mitigation Measure AIR-1 would be required to reduce substantial pollutant concentrations during project construction.

Project-Specific MM AIR-1: During construction of the proposed project, the project contractor shall ensure all off-road diesel-powered construction equipment of 50 horsepower or more used for the project construction at a minimum meets the California Air Resources Board Tier 2 emissions standards equipped with Level 3 diesel particulate filters or the equivalent.

Table D identifies the results of the analysis with implementation of Project-Specific Mitigation Measure Mitigation Measure AIR-1.

Table D: Mitigated Inhalation Health Risks from Project Construction to Off -Site Receptors

Carcinogenic
Inhalation
Health Risk in
One Million
Chronic
Inhalation
Hazard Index
Acute
Inhalation
Hazard Index
Annual PM

2.5 Concentration
(µg/m3)
School Receptor Risk 2.34 0.009 0.000 0.046
Residential Receptor Risk 2.25 0.002 0.000 0.012
BAAQMD Significance Threshold 10.0 1.0 1.0 0.30
Exceed Threshold? No No No No
Source: LSA (January 2023).

BMP = Best Management Practices

As shown in Table D, the mitigated cancer risk would be 2.34 in one million at the school receptor MEI and 2.25 in one million at the residential receptor MEI, which would not exceed the BAAQMD cancer risk of 10 in one million. Therefore, with implementation of Project- Specific Mitigation Measure AIR-1, construction of the proposed project would not exceed BAAQMD thresholds and would not expose nearby sensitive receptors to substantial pollutant concentrations.
78 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 42

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Once the proposed project is constructed, the proposed project would not be a source of substantial emissions. Therefore, implementation of the proposed project would not result in new sources of TACs.

Therefore, the project would not expose sensitive receptors to substantial levels of TACs and this impact would be less than significant with mitigation incorporated. (d) Odors
No New Impact. During construction, the various diesel-powered vehicles and equipment in use on the site would create localized odors. These odors would be temporary and are not likely to be noticeable for extended periods of time beyond the project site because construction activities would be temporary and odors generated from construction activities would be isolated to the immediate vicinity of the construction site. The potential for diesel odor impacts is, therefore, considered to be less than significant. In addition, the proposed project would not include any activities or operations that would generate objectionable odors and once operational, it would not be a source of odors Therefore, the proposed project would not result in other emissions (such as those leading to odors) adversely affecting a substantial number of people.

Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR for the following project impacts (subsections (b), and (d)): violation of air quality standards or cause cumulatively considerable air pollutants and odors. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR and modified above, there would be no new impacts to air quality beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met for these two project impacts. Therefore, no further environmental review is required for these project impacts.

Although the Eastern Dublin EIR did not evaluate consistency with the applicable clean air plan, the proposed project would be consistent with the Clean Air Plan. Therefore, based on this environmental analysis, the project impact related to consistency with air quality plans (subsection (a)) would be less than significant and no mitigation is required.

For the project impact related to exposure of sensitive receptors to pollutant concentrations (subsection (c)), the proposed project would not expose sensitive receptors to substantial levels 79 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 43

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
of TACs and this impact would be less than significant with implementation of a project specific mitigation measure (Mitigation Measure AIR-1).

Source(s)
BAAQMD. 2017. Final 2017 Clean Air Plan. April 19. Website:
www.baaqmd.gov/~/media/files/planning-and-research/plans/2017-clean-air- plan/attachment-a_-proposed-final-cap-vol-1-pdf.pdf?la=en (accessed January 2023).

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

80 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 44

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Biological Resources

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

4. BIOLOGICAL RESOURCES. Would the project:
a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations, or by the
California Department of Fish and Wildlife or U.S. Fish and Wildlife Service?
X
b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the
California Department of Fish and Wildlife or U.S. Fish and Wildlife Service?
X
c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means?
X
d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with
established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery sites?
X
e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?
X
f) Conflict with the provisions of an adopted Habitat
Conservation Plan, Natural Community Conservation
Plan, or other approved local, regional, or state habitat conservation plan?
X
Environmental Setting
Methods
To identify special-status plant and animal species known to occur or potentially occurring in the project site vicinity, the following resources were queried: 1) California Department of Fish 81 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 45

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
and Wildlife California Natural Diversity Database (CNDDB8) for species records within a 5-mile radius of the project site using Geographic Information Systems (GIS) software; 2) California Native Plant Society’s (CNPS) Inventory of Rare and Endangered Plants of California9 for records of special-status plant species; 3) U.S. Fish and Wildlife Service (USFWS) Information for Planning and Consultation on-line system;10 and 4) milkweed tracker.11 Previous biological resources reports for the project site were also reviewed.12,13 A biologist conducted a reconnaissance-level field survey on January 6, 2023. During this survey, preliminary information on vegetation types, wildlife habitat, and sensitive habitat (e.g., wetlands) was collected.

The scientific and vernacular nomenclature for the plant and wildlife species used in this analysis are from the following standard sources: plants, Baldwin et al.14 and updates listed on the Jepson Herbarium website (ucjeps.berkeley.edu/eflora/); amphibians and reptiles, Crother;
15 birds, American Ornithologists’ Union and supplements through 2022;16 and mammals, Bradley et al.17
Project Site
The proposed project would redevelop the approximately 2.64-acre project site with the performing arts center. The house and associated buildings are situated at the western boundary along Tassajara Road, while ruderal (weedy) vegetation is located in the middle and eastern half of the site. Almost all of the site was disturbed in the past for its use as a landscape storage yard. An old foundation is located near the eastern boundary of the site. The ruderal vegetation is interspersed with gravel. A tributary to Tassajara Creek and its associated riparian woodland is located to the south and the existing school campus and landscaping are located to

8 California Department of Fish and Wildlife. 2023. California Natural Diversity Database, commercial version dated January 2023. Biogeographic Data Branch, California Department of Fish and Wildlife, Sacramento. 9 California Native Plant Society, Rare Plant Program. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed January 16, 2023]. 10 United States Fish and Wildlife Service. 2023. Information for Planning and Consultation (IPaC). January 16. 11 Xerces Society for Invertebrate Conservation, Idaho Department of Fish and Game, Washington Department of Fish and Game, National Fish and Wildlife Foundation, and U.S. Fish and Wildlife Service.202 3. Western Monarch Milkweed Mapper. Available at: https://www.monarchmilkweedmapper.org. 12 LSA Associates, Inc. 2014. Biological Resources Report for the 6237 Tassajara Road Property Dublin, Alameda County, California. January 15.
13 LSA Associates, Inc. 2017. Biological Resources Report Update, 6237 Tassajara Road, Dublin. May 9. 14 Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012. The Jepson Manual: Vascular Plants of California, Second Edition. University of California Press, Berkeley. 15 Crother, B.I. (ed.). 2017. Scientific and Standard English Names of Amphib ians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, pp. 1 -102. SSAR Herpetological Circular No. 43.
16 American Ornithologists’ Union (AOU). 1998. Check-list of North American Birds. 7th Edition. American Ornithologists’ Union, Washington, D.C.
17 Bradley, R.D., L.K. Ammerman, R.J. Baker, L.C. Bradley, J.A. Cook, R.C. Dowler, D.J. Schmidly, F.B. Stangl, Jr., R.A. Van Den Bussche, and B. Würsig. 2014. Revised Checklist of North American Mammals North of Mexico, 2014. Occasional Papers, Museum of Texas Tech University No. 237. 82 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 46

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
the north. The riparian woodland and tributary are part of the Northern Drainage Conservation Area (NDCA) and are separated from the project site by an existing 6-foot-high chain link fence with a 3.5-foot-high sheet metal barrier along its base that was constructed along the southern site boundary. A concrete v-ditch and planted coast live oak (Quercus agrifolia), valley oak (Q. lobata), and ornamental plants are located north of the site between the project site and the existing school campus. An off-site eucalyptus (Eucalyptus sp.) grove is located to the east. A potentially jurisdictional seasonal wetland was also observed just east of the site. Elevations at the site range from approximately 435 to 460 feet (132 to 140 meters) above sea level.

The existing chain-link fence and sheet metal barrier that parallels the southern site boundary is an important component of the adjacent NDCA since it prevents wildlife from moving onto the site. The fence would remain intact during and after construction and should also extend from its current end at the southeastern corner of the site to the northeastern corner.

Vegetation and Cover Types. Vegetation includes mostly ruderal plants and non-native annual grasses, ornamental plants near the existing structures, and branches of riparian trees that are growing extending over the project site’s southern boundary. A tributary to Tassajara Creek and associated riparian woodland occurs along the southern boundary. Other cover types on the site include paved and graveled hardscape.

Ruderal Non-Native Annual Grassland. The majority of the project site supports non-native annual grassland and ruderal vegetation. Grass species observed in the annual grasslands are almost exclusively non-native grasses, including wild oats (Avena spp.), ripgut brome (Bromus diandrus), soft chess (B. hordeaceus), and fox tail barley (Hordeum murinum). Non-native shrubs and forbs observed include black mustard (Brassica nigra), Russian thistle (Salsola tragus), Italian thistle (Carduus pycnocephalus), bull thistle (Cirsium vulgare), purple star thistle (Centaurea calcitrapa), yellow star thistle (C. solstitialis), curly dock (Rumex crispus), filaree (Erodium spp.), bristly ox-tongue (Helminthotheca echioides), cheeseweed (Malva parviflora), and ornamental sage (Salvia sp.). A few small native coyote brush (Baccharis pilularis) shrubs and coast live oaks are also present in the grassland.

Riparian Woodland and Tributary. Riparian woodland vegetation that is associated with a tributary to Tassajara Creek is located along the southern boundary of the site. The riparian woodland is located within the 267-acre NDCA unit of the Dublin Ranch Preserve, managed by the Center for Natural Lands Management. The 717-acre preserve was established in 2010 as mitigation for the nearby Dublin Ranch development project. The stream associated with the riparian woodland is an unnamed tributary to Tassajara Creek, which flows to the west of the site. Woody vegetation along the approximately 880-foot channel section that parallels the southern site boundary consists of native species that have been planted as mitigation for the nearby Dublin Ranch development. The upper portions of the channel bank support remnant orchard tree snags likely retained as habitat for cavity-nesting birds, planted valley oak (Quercus lobata) saplings, and coyote brush (Baccharis pilularis) shrubs. Native riparian tree and shrub species planted on the lower bank and adjacent to the channel include box elder (Acer negundo), Fremont cottonwood (Populus fremontii), arroyo willow (Salix lasiolepis), and 83 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 47

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
California rose (Rosa californica). Other species observed in the riparian woodland include poison oak (Toxicodendron diversilobum) and non-native annual grasses. Branches of riparian trees, such as the arroyo willow, box elder, and valley oak hang over the chain-link fence along the property line.

Developed. Developed areas within the project site includes the existing houses, structures, gravel, driveways, old concrete foundations, and mowed grass, and various ornamental plants and a few orchard trees.

Wildlife. The project site is located mostly within an undeveloped ruderal non-native grassland interspersed with gravel and old concrete foundations, which provide suitable habitat for sparrows and small and medium-sized mammals. Trees and shrubs on the project site provide nesting habitat for bird species, such as white-tailed kite (Elanus leucurus) and California scrub- jay (Aphelocoma californica). The ruderal grassland provides habitat for ground-nesting passerines, such as western meadowlark (Sturnella neglecta). The gravel areas provide suitable nesting habitat for killdeer (Charadrius vociferus). During the winter, the resident bird community may be supplemented by species that breed further north or at higher elevations.

The ruderal grassland vegetation provides suitable habitat for common amphibians, such as Pacific treefrog (Pseudacris regilla), California slender salamander (Batrachoseps attenuatus), and arboreal salamander (Aneides lugubris) as well as common reptiles, such as southern alligator lizard (Elgaria multicarinata), western skink (Plestidon skiltonianus), and gopher snake (Pituophis catenifer).

Common mammal species that were observed or are likely to occur at the project site include northern raccoon (Procyon lotor), striped skunk (Mephitis mephitis), Virginia opossum (Didelphis virginiana), Botta’s pocket gopher (Thomomys bottae), California ground squirrel (Otospermophilus beecheyi), Audubon’s cottontail (Sylvilagus audubonii), and black-tailed deer (Odocoileus hemionus columbianus). Other small mammal species likely to occur on site include California vole (Microtus californicus), house mouse (Mus musculus), and roof rat (Rattus rattus). The grasslands also provide foraging habitat for common bat species, such as big brown bat (Eptesicus fuscus) and Brazilian free-tailed bat (Tadarida brasiliensis), although no bat roosts were observed during the reconnaissance-level field survey.

Wildlife species observed during the reconnaissance-level survey are listed in Table E. This analysis assumes many additional species are likely to occur on the site throughout the year based on the review of other databases.

Table E: Wildlife Species Observed During the Field Survey Common Name Scientific Name Status
Birds
Rock pigeon Columba livia R/I
Anna’s hummingbird Calypte anna R
84 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 48

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table E: Wildlife Species Observed During the Field Survey Common Name Scientific Name Status
Turkey vulture Cathartes aura R
Golden eagle Aquila chrysaetos R
Red-tailed hawk Buteo jamaicensis R
Acorn woodpecker Melanerpes formicivorus R
Northern flicker Colaptes auratus R
American kestrel Falco sparverius R
Black phoebe Sayornis nigricans R
Say’s phoebe Sayornis saya W
California scrub-jay Aphelocoma californica R
Common raven Corvus corax R
Ruby-crowned kinglet Regulus calendula W
Northern mockingbird Mimus polyglottos R
Cedar waxwing Bombycilla cedrorum W
Dark-eyed junco Junco hyemalis R
White-crowned sparrow Zonotrichia leucophrys W
Golden-crowned sparrow Zonotrichia atricapilla W
Yellow-rumped warbler Setophaga coronata W
Mammals
Botta’s pocket gopher Thomomys bottae R/burrows
California ground squirrel Otospermophilus beecheyi R/burrows Audubon’s cottontail Sylvilagus audubonii R
Black-tailed deer Odocoileus hemionus columbianus R/tracks Source: Compiled by LSA (2023).

I = Introduced
R = Year-round resident; expected to nest/breed on the Project site or vicinity W = Winter resident; winters on or near site but migrates out of Bay Area to nest Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to direct habitat loss, indirect habitat loss due to vegetation removal for construction and development activities, and loss or degradation of sensitive habitat. The Eastern Dublin EIR also identified potentially significant impacts related to special-status wildlife, including San Joaquin kit fox, California red- legged frog (CRLF), California tiger salamander (CTS), western pond turtle, tri-colored blackbird, golden eagle, burrowing owl, American badger, special-status invertebrates and others.

Mitigation measures were identified to reduce significant impacts. One significant and unavoidable impact was identified related to the cumulative loss or degradation of botanically sensitive habitat, and a Statement of Overriding Considerations was adopted. The following mitigation measures would apply to the proposed project:

MM 3.7/1.0 Direct disturbance or removal of trees or native vegetation cover should be minimized and be restricted to those areas actually designated for the construction of improvements.

MM 3.7 /2.0 (Policy 6-23) Vegetation enhancement/management plans should be prepared for all open space areas (whether held publicly or privately) with the intent to 85 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 49

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
enhance the biologic potential of the area as wildlife habitat. The focus of such plans will be to reintroduce native species in order to increase the vegetative cover and plant diversity.

MM 3.7 / 3.0 The City will require a detailed revegetation/restoration plan to be developed for all disturbed areas that are to remain undeveloped. The plan will be developed by a qualified revegetation specialist, and should incorporate stockpiling of native topsoils as appropriate, for later reapplication to cut slopes, shoulders, and pads.

MM 3.7/5.0 All areas of disturbance should be revegetated as quickly as possible to prevent erosion. Native trees (preferably those species already on site), shrubs, herbs, and grasses should be used for revegetation of areas to remains as natural open space.

The introduction of non-native plant species should be avoided.

MM 3.7 /6.0 Natural stream corridors, ponds, springs, seeps, and wetland areas shall be preserved wherever possible. Prior to submittal of development applications, the California Department of Fish and Game and the Army Corps of Engineers (COE) must be consulted to determine whether they have jurisdiction over the watercourse or wetland area.

MM 3.7 /7.0 Riparian and wetland areas shall be incorporated into greenbelt and open space areas as a means of preserving and enhancing their hydrologic and habitat value.

Unavoidable loss of riparian habitat due to development shall be replaced as requested by CDFG. Loss of wetlands must be mitigated consistent with the COE's "no net loss" policy.

MM 3.7 /8.0 All stream corridors should be revegetated with native plant species to enhance their natural appearance and improve habitat values. Revegetation must be implemented by a professional approved by the California Department of Fish and Game.

MM 3.7 /9.0 Maintain natural open stream channels to carry storm runoff wherever feasible, rather than replacing with underground storm drainage systems. When extra capacity is necessary, retention basins are preferable to channelization, if the channelization would disturb riparian habitat. When channelization is necessary, the channel should be designed and constructed to accommodate both the projected flows and the growth of riparian vegetation, and to have more natural-appearing contours.

MM 3.7 / 10.0 (Policy 6-13). Establish a stream corridor system, which provides multi- purpose open space corridors capable of accommodating wildlife and pedestrian circulation. In order to facilitate the use of these corridors by both humans and wildlife, human activities (e.g., trails) should be limited to one side of the stream.

86 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 50

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
MM 3.7 / 11.0 The City shall require all project applicants to submit a multi-parameter wetlands delineation to the COE for verification and jurisdictional establishment and submit plans for proposed alteration to any watercourse to the DFG for their review and approval. Applicants will be required to submit these agencies' determinations, any required permits, and approved mitigation plans as part of the final development plan submittal.

MM 3.7/14.0 The City should enact and enforce an erosion and sedimentation control ordinance establishing performance standards to ensure maintenance of water quality and protection of stream channels. The ordinance should regulate grading and development activities adjacent to streams and wetland areas and require revegetation of all ground disturbance immediately after construction to reduce erosion potential.

Until such an ordinance is in place, the City shall require project applicants to provide a detailed erosion and sedimentation control plan as part of the project submittal.

MM 3.7/16.0 Existing sensitive habitats shall be avoided and protected where feasible.

MM 3.7/17.0 Construction near drainages shall take place during the dry season.

MM 3.7/19.0 The use of rodenticides and herbicides within the Project area should be restricted to avoid impacts on wildlife. The City shall require any poisoning programs to be done in cooperation with and under supervision of the Alameda County Department of Agriculture.

MM 3.7/20.0 The City shall require development applicants to conduct a pre- construction survey within 60 days prior to habitat modification (clearing construction and road site, etc.) to verify the presence of sensitive species, especially the San Joaquin kit fox, nesting raptors, the red-legged frog, the western pond turtle, the California tiger salamander, the tri-colored blackbird and other species of concern.

MM 3.7 /21.0 Sensitive habitat shall be protected and enhanced by implementation of Mitigation Measures 3.7/2.0, 3.7/3.0, 3.7/6.0-3.7/18.0 inclusive.

MM 3.7/22.0 Maintain a minimum buffer (at least 100 feet) around breeding sites of the red-legged frog, California tiger salamander and the western pond turtle identified by MM 3.7/20.0.

MM 3.7 /23.0 Maintain a natural open space zone (Golden Eagle Protection Zone) around the golden eagle nest located in the northeast corner of the planning area.

Exceptions to this setback will have to be approved by the U.S. Fish and Wildlife Service (USFWS), based on field examinations of the site to determine what constitutes "harassment" of the eagles at this particular location. Construction within this protection zone will not be allowed unless it is determined that the eagles have ceased to use the nest site for two consecutive years as verified by the USFWS. 87 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 51

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)

MM 3.7 /24.0 During the golden eagle reproductive period (July-January), an additional temporal buffer will be established within 250 feet of the Golden Eagle Protection Zone.

During this period, construction and development activities will not be allowed within this temporal zone.

MM 3.7 /25.0 Partial mitigation for the loss of useable foraging habitat will be provided by MM 3.7 / 23 which establishes a Golden Eagle Protection Zone. Additional mitigation will be provided by the 571 .1 acres of Open Space and 2,672.3 acres of Rural Residential land use of the Project. Combined, the Golden Eagle Protection Zone and the 3,243.4 acres of land projected for open space protection or low intensity development would provide suitable foraging habitat.

MM 3.7/27.0 Maintain a minimum buffer (at least 300 feet) around known or those identified by pre-construction surveys (MM 3.7/20.0) nesting sites of the burrowing owl and breeding sites of the American badger during the breeding season to avoid direct loss of individuals (March – September).

Project Impacts and Mitigation Measures
(a) Substantial adverse effect on candidate, sensitive, or special status species No New Impact. Special-status species are defined as follows:
 Species that are listed, formally proposed for listing, or designated as candidates for listing as threatened or endangered under the federal Endangered Species Act (ESA);  Species that are listed, or designated as candidates for listing, as rare, threatened, or endangered under the California Endangered Species Act (CESA);  Plant species on California Rare Plant Rank (CRPR) Lists 1A, 1B, and 2 in the CNPS Inventory of Rare and Endangered Plants;
 Animal species designated as Species of Special Concern or Fully Protected by the California Department of Fish and Wildlife (CDFW);
 Species that meet the definition of rare, threatened, or endangered under Section 15380 of the CEQA guidelines; and
 Species considered being a taxon of special concern by the relevant local agencies. 88 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 52

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Special-Status Plants. Based on the results of the database search and literature review, five special-status plant species were evaluated as potentially occurring in the site vicinity (Table F).

No special-status plants are likely to occur on the site due to the lack of suitable habitat.

Special-Status Wildlife. Based on the results of the data base search, literature review and the reconnaissance-level field surveys, 25 special-status wildlife species were evaluated for the project area (Table F). Of these species, the following were determined to be present or potentially present on the project site due to the presence of suitable habitat. These species are further discussed below.
 Monarch butterfly (Danaus plexippus; Candidate Federally Listed)  Western bumble bee (Bombus occidentalis; Candidate State Listed)  Crotch bumble bee (Bombus crotchii; Candidate State Listed)  California red-legged frog (CRLF; Rana draytonii; Federally Threatened, California Species of Special Concern)
 California tiger salamander (CTS; Ambystoma californiense; Federally and State Threatened)
Table F: Special-Status Species Evaluated for the Project Species Status1 Habitat/Blooming Period Discussion
PLANTS
Centromadia parryi
ssp. congdonii
Congdon’s tarplant
1B Grazed and ungrazed annual grassland.

Alkaline or saline soils sometimes
described as heavy white clay (saline
clay soil).

Elevation: 1-230 m.

Blooms: May–October.

No potential to occur. Not likely to
occur due to lack of suitable alkaline or
saline substrates and prior disturbance
at the site. The closest CNDDB
occurrence (#91) is approximately 0.12
mile west of the site, on the west side
of Tassajara Road.

Extriplex (Atriplex)
joaquinana
San Joaquin
spearscale
1B Chenopod scrub, meadows and seeps,
playas, valley and foothill
grassland/alkaline.

Elevation: 1-835 m.

Blooms: April–October.

No potential to occur. Not likely to
occur due to lack of habitat. The closest
CNDDB occurrence (#98) is
approximately 1.1 miles from the site.

Helianthella castanea
Diablo helianthella
1B Rocky soils in chaparral/oak woodland
interface.

Elevation: 60-300 m.

Blooms: March–June.

No potential to occur. Not likely to
occur due to lack of suitable
chaparral/oak woodland habitat. The
closest CNDDB occurrence (#94) is
approximately 3.2 miles from the site.

Navarretia prostrata
Prostrate vernal pool
navarretia
1B Wetlands in coastal sage scrub and
wetland riparian habitat.

Elevation: 15-40 m.

Blooms: April–July.

No potential to occur. Not likely to
occur due to lack of suitable habitat.

The closest CNDDB occurrence (#61) is
approximately 1.7 miles from the site.

Trifolium hydrophilum
Saline clover
1B Wetlands and riparian habitat.

Elevation: 0-45 m.

Blooms: April–June.

No potential to occur. Not likely to
occur due to lack of suitable habitat.

The closest CNDDB occurrence (#7) is a
possibly extirpated record
approximately 1.5 miles from the site.

ANIMALS
Fish
89 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 53

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Species Status1 Habitat/Blooming Period Discussion
Steelhead (central
California coast DPS)
Oncorhynchus mykiss
FT Anadromous. Coastal streams from
Russian River south to Aptos Creek
(Santa Cruz Co.), including streams
tributary to San Francisco and San Pablo
Bays.

No potential to occur. No suitable
habitat present. Tassajara Creek and its
tributaries do not provide suitable
salmonid habitat.18

BRACHIOPODS
Conservancy fairy
shrimp
Branchinecta
conservatio
FE Short-lived alkaline pools and
ephemeral drainages.

No potential to occur. No suitable
habitat present. Off-site ponded area
north of site does not provide suitable
habitat. Not known to occur in the
Project vicinity. No CNDDB occurrences
within 5 miles of the project site.

Insects
Monarch butterfly
Danaus plexippus
FC/
Sensitive
Winter
Roosting
Sites
Winter roosts along the coast from
northern Mendocino to Baja California,
Mexico in wind-protected tree groves
(eucalyptus, Monterey pine, cypress)
with nectar and water sources nearby.

Uses milkweed (Asclepias spp.) as host
plants.

Low potential to occur. No suitable
overwintering roost sites present, but
species could briefly forage in ruderal
vegetation. No milkweed (Asclepias
spp.) host plants observed during prior
surveys. No CNDDB occurrences within
5 miles of the project site.

Western bumble bee
Bombus occidentalis
Candidate
SE
Variety of habitat types supporting
native flowering plants. Species has
declined precipitously, perhaps from
disease.

Low potential to occur. Low quality
habitat present at the project site due
to limited native flowering plants. The
closest CNDDB occurrence (#230) is a
1932 and 1951 record approximately

3.4 miles from the site.

Crotch bumble bee
Bombus crotchii
Candidate
SE
Variety of habitat types supporting
native flowering plants. Species has
declined precipitously, perhaps from
disease.

Low potential to occur. Low quality
habitat present at the project site due
to limited native flowering plants. The
closest CNDDB occurrence (#17) is a
1932 record approximately 3.4 miles
from the site.

Amphibians and Reptiles
California red-legged
frog
Rana draytonii
FT/SSC Ponds, streams, drainages and
associated uplands; requires areas of
deep, still, and/or slow-moving water
for breeding
Low potential to occur. Suitable
breeding habitat occurs in Tassajara
Creek and tributary adjacent to site, but
existing barrier fencing would likely
preclude species from occurring. The
closest CNDDB occurrence is a 2016
record (#278) from Tassajara Creek and
Moller Creek drainage approximately

0.01 mile from the site.

18 Leidy, R.A., G.S. Becker, B.N. Harvey. 2005. Historical Distribution and Current Status of Steelhead/Rainbow Trout (Oncorhynchus mykiss) in Streams of the San Francisco Estuary, California. Center for Ecosystem Management and Restoration, Oakland, CA.
90 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 54

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Species Status1 Habitat/Blooming Period Discussion
California tiger
salamander
Ambystoma
californiense
FT/ST Breeds in vernal pools, ponds, and stock
ponds. Spends summer and early fall in
uplands surrounding breeding sites,
taking refuge in small mammal burrows
or other underground cover.

Low potential to occur. Poor quality
upland habitat present, but existing
houses along the western boundary and
the existing barrier fencing to the south
would likely preclude species from
occurring. The closest CNDDB
occurrence (#371) of an extant breeding
record is west of Tassajara Road at a
seasonal pond approximately 1.2 miles
from the site.

Western pond turtle
Emys marmorata
SSC Ponds, streams, drainages, and
associated uplands.

Low potential to occur. Suitable habitat
present in Tassajara Creek and tributary
adjacent to site, but existing barrier
fencing would likely preclude species
from occurring. The closest CNDDB
occurrence is a 2000 record (#246)
approximately 0.1 mile from the site in
Tassajara Creek.

Alameda striped racer
(=whipsnake)
Masticophis lateralis
euryxanthus
FT/ST Chaparral and sage scrub with rock
outcrops and an abundance of prey
species such as western fence lizard
(Sceloporus occidentalis).

Low potential to occur. Not likely to
occur due to lack of chaparral and scrub
at or adjacent to the project site.

Marginally suitable habitat (grasslands)
present, however it is not combined
with scrub stands, an important feature.

This species would not likely occur. The
closest CNDDB occurrence is a possibly
extirpated record from 1991 (#39)
approximately 4.5 miles from the site.

Birds
Short-eared owl
Asio flammeus
SSC Open grasslands, meadows, and
marshes with few trees. Requires dense
ground vegetation for both roosting and
nesting.

Low potential to occur. Poor quality
nesting and foraging habitat present.

No CNDDB occurrences within 5 miles
of the project site.

Burrowing owl
Athene cunicularia
SSC Open habitats (e.g., grasslands,
agricultural areas) with mammal
burrows or other features (e.g.,
culverts, pipes, debris piles) suitable for
nesting and roosting.

Moderate potential to occur. May
breed and/or winter on the site. Ground
squirrel burrows observed on site, but
dense cover of surrounding ruderal
vegetation may preclude use. The
closest CNDDB occurrence is a 2008
record (#1233) approximately 0.9 mile
from the site.

White-tailed kite
Elanus leucurus
CFP Open grasslands, meadows, or marshes.

Require dense-topped trees or shrubs
for nesting and perching.

Moderate potential to occur. Suitable
nesting habitat present in large trees
and shrubs and suitable foraging habitat
present. The closest CNDDB occurrence
(#81) is approximately 1.3 miles from
the site.

Northern harrier
Circus hudsonius
SSC Nests in wet meadows and marshes,
forages over open grasslands and
agricultural fields.

Low potential to occur. Suitable
foraging and nesting habitat present,
but small size and proximity of human
disturbance may preclude nesting. The
closest CNDDB occurrence (#27) is
approximately 2 miles from the site.
91 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 55

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Species Status1 Habitat/Blooming Period Discussion
Golden eagle
Aquila chrysaetos
CFP Forages in rolling foothill or coast-range
terrain, with open grassland and
scattered large trees. Nests in large
trees, on cliffs, and occasionally on
power line poles.

High potential to occur. No suitable
nesting habitat present on-site, but
species known to regularly nest in
eucalyptus grove east of site (LSA pers.
obs.). Species may fly or forage over the
site. Species observed flying east of site
and inactive stick nests observed in
eucalyptus grove during
reconnaissance-level field survey. The
closest CNDDB occurrence (#84) is
approximately 1.7 miles from the site.

American peregrine
falcon
Falco peregrinus
anatum
CFP Forages in open country, mountains,
and sea coasts. Nests on high cliffs,
bridges, and buildings.

Moderate potential to occur. No
suitable nesting habitat present, but
species may briefly fly or forage over
the site. CNDDB occurrences
suppressed by CDFW.

Loggerhead shrike
Lanius ludovicianus
SSC Grasslands and open shrub or woodland
communities. Nests in dense shrubs or
trees and forages in scrub, open
woodlands, grasslands, and croplands.

Frequently uses fences, posts, and
utility lines as hunting perches.

Moderate potential to occur. Suitable
nesting and foraging habitat present at
the project site. No CNDDB occurrences
within 5 miles of the project site.

Vaux’s swift
Chaetura vauxi
SSC Grasslands and agricultural fields; nests
in dense vegetation in large hollow
trees near open water; forages in most
habitats but prefers rivers and lakes.

Low potential to occur. No suitable
roosting or nesting habitat present, but
could fly or forage over the site during
migration. Species not tracked in the
CNDDB.

Grasshopper sparrow
Ammodramus
savannarum
SSC Grasslands with coyote brush and other
shrubs.

Low potential to occur. No suitable
grassland habitat present. Species not
tracked in the CNDDB.

Tricolored blackbird
Agelaius tricolor
ST, SSC Breeds in large colonies near
freshwater, preferably emergent
wetland such as cattails and tules but
also in thickets of willow and other
shrubs. Requires nearby foraging areas
with large numbers of insects.

Low potential to occur. May forage on
site during the winter, but no suitable
nesting habitat present. The closest
CNDDB occurrence (#226) is 1990s
record, which is possibly extirpated,
approximately 1.9 miles from the site.

Mammals
Townsend’s western
big-eared bat
Corynorhinus
townsendii
SSC Found in wooded areas with caves or
old buildings for roost sites.

Low potential to occur. No suitable
roosting and hibernating habitat
present, but could forage over the site.

No CNDDB occurrences within 5 miles
of the project site.

Pallid bat
Antrozous pallidus
SSC Roosts in caves, tunnels, buildings,
under bridges, and in tree hollows;
forages over variety of habitats.

Moderate potential to occur. Suitable
roosting habitat may be present in trees
adjacent to site; this bat could
occasionally occur as a transient while
foraging at night. No trees with large
hollows observed during the field
survey. The closest CNDDB occurrence
(#331) is approximately 3.9 miles from
the site.
92 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 56

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Species Status1 Habitat/Blooming Period Discussion
Western red bat
Lasiurus blossevillii
SSC Often roosts and forages on or near
riparian habitat. Roosts primarily in
trees, 2-40 feet above ground, from sea
level up through mixed conifer forests.

Prefers habitat edges and mosaics with
trees that are protected from above
and open below with open areas for
foraging. Does not breed in the San
Francisco Bay Area.

Moderate potential to occur. Suitable
roosting habitat present in trees
adjacent to site and suitable foraging
habitat present, but species does not
breed in the area. No CNDDB
occurrences recorded within 5 miles of
the project site.

San Joaquin kit fox
Vulpes macrotis
mutica
FE/ST Found in open grasslands and arid areas
with ground squirrel and/or kangaroo
rat populations. Dens in rodent
burrows.

Very Low potential to occur. Limited
foraging and denning habitat; species is
very rare in the region. This species was
recorded in the mid-1970s (CNDBB
occurrence #1031), denning at an
unknown location near Tassajara Creek
Regional Park in San Ramon.

American badger
Taxidea taxus
SSC Grassland, scrub, and woodland with
loose-textured soils.

Low potential to occur. Unlikely to
occur due to the small size of grassland
habitat present and limited prey. The
closest CNDDB occurrence (#349) is
approximately 0.3 mile from the site.

Source: LSA 2023
1 Status Codes:

FE = federally endangered
FT = federally threatened
FC = federal candidate
SE = State endangered
ST = State threatened
1B = California Rare Plant Rank (CRPR) 1B (plants rare, threatened, or endangered in California and elsewhere) SSC = California Species of Special Concern
CFP = California Fully Protected Species
2 DPS = distinct population segment

93 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 57

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)

 Western pond turtle (Emys marmorata; California Species of Special Concern)  Burrowing owl (Athene cunicularia; California Species of Special Concern)  Northern harrier (Circus hudsonius; California Species of Special Concern)  White-tailed kite (Elanus leucurus; California Fully Protected Species)  Golden eagle (Aquila chrysaetos; California Fully Protected Species)  Pallid bat (Antrozous pallidus; California Species of Special Concern)  Western red bat (Lasiurus blossevillii; California Species of Special Concern)

None of the remaining species are likely to occur due to a lack of habitat (e.g., tidal marsh, wetlands, scrub) or rarity of the species.

The proposed project would result in the loss of ruderal grassland habitat within the project site. Special-status wildlife species could be impacted both directly and indirectly during construction activities after construction has been completed. The potential for protected resources to be impacted by construction of the proposed project are a function of the likelihood the species is present when the project is constructed, as well as the type and duration of construction activities. Another factor is the sensitivity of the species or resource to disturbance. For example, roosting bats may not react to construction activities near roosts during the day, whereas a raptor may abandon its nest if construction is within 100 feet from the nest. The following discussion addresses direct and indirect impacts to special-status wildlife species from project-related construction activities as well as potential impacts to special-status wildlife species from use of the project site.

Monarch Butterfly. The monarch butterfly is a federal Candidate listed species that could feed on flowering plants and/or breed at the site if milkweed (Asclepias spp.) is present. The project site is outside of the known overwintering range for this species, and therefore, monarchs would not overwinter at the project site. Monarch butterflies breed from June to September and require their obligate larval host plant, milkweed, for laying eggs, larval development, and metamorphosis. This species utilizes other flowering species for nectaring during the breeding season.

The project site does not support suitable habitat for wintering monarch butterflies, and therefore, winter roosts (which are considered sensitive by CDFW) would not be impacted by the proposed project. Due to prior disturbance at the site, milkweed plants are unlikely to occur at the site. If present, milkweed could be used by breeding monarchs, related impacts would be less than significant due to the small likelihood of monarchs to occur, and because winter roosts would not be disturbed.
94 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 58

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Western and Crotch Bumble Bee. The western bumble bee and Crotch bumble bee are Candidate State Endangered listed species. These species are known to occur in grassland and scrub habitat where suitable native nectar plants are present. These species historically occurred in the region but are considered rare and no records have been recorded near the site.19 Western and Crotch bumble bee specimens were collected in 1932 and 1952 at an unknown location in Pleasanton, approximately 3.4 miles from the site.20 Due to the lack of native flowering plant species at the site and their current rarity in the area, these species are unlikely to occur at the site.

California Tiger Salamander and California Red-Legged Frog. California tiger salamander (CTS) is a federal and State threatened species that is known to occur in the area. This species breeds in vernal pools and seasonal wetlands and uses grasslands as upland habitat. Numerous occurrences have been recorded within 5 miles of the site, with the closest being an adult and breeding pond approximately 0.1 mile from the site, on the western side of Tassajara Road. The existing houses along the western boundary, the school along the northern boundary, and the barrier fencing along the southern boundary would likely preclude this species from occurring.

CTS, however, could access the site from the eastern boundary, but the limited suitable grassland habitat on the site likely precludes its occurrence. The project would install barrier fencing along the eastern boundary to keep CTS from accessing the site during and after construction of the project.

California red-legged frog (CRLF) is a federally threatened species and California Species of Special Concern that occurs in and along freshwater marshes, streams, ponds, and other semi- permanent water sources. CRLF have been observed in Tassajara Creek and within the Moller Creek drainage in close proximity to the site.
21 This species could use the off-site tributary and
Tassajara Creek as breeding or non-breeding aquatic habitat. CRLF could disperse through the site, but the houses along the western boundary, the school to the north, and the barrier fencing to the south likely cause barriers for this species. Alternatively, dispersing CRLF would more likely disperse through the tributary and riparian woodland to the south.

CRLF and CTS are unlikely to occur on the project site due to the degraded nature of the site and the presence of the barrier wall that was installed specifically to prevent CRLF and CTS from entering the site. A 6-foot-high chain link fence with a 3.5-foot-high sheet metal barrier along its base was constructed along the southern site boundary. The sheet metal barrier was specifically installed to prevent wildlife from moving from the adjacent Northern Drainage Conservation Area riparian corridor onto the site.

19 California Department of Fish and Wildlife. 2019. Evaluation of the Petition from the Xerces Society, Defenders of Wildlife, and the Center for Food Safety to List Four Species of Bumble Bees as Endangered Under the California Endangered Species Act. State of California, Natural Resources Agency. Report to the Fish and Game Commission. April 4.
20 CDFW. 2022, op. cit.
21 CDFW, 2023.
95 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 59

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
No suitable breeding habitat for CRLF or CTS exists in the Northern Drainage Conservation Area west of Fallon Road. The creek adjacent to the project site has an ephemeral to intermittent flow depending on the rainfall year. No deep pools that could provide habitat for long-term occupancy or breeding by either species was observed in the tributary. However, both CRLF and CTS are known to be present in the upstream reach of this drainage east of Fallon Road.

The barrier wall that defines the southern boundary of the property and separates the degraded project site conditions from the adjacent riparian corridor acts as a barrier to the movement of terrestrial species. The location of this wall is fixed by the permit conditions that established the NDCA and would remain in place. The buffer needed to separate site activities from wildlife use of the tributary is established by the barrier wall and is not a function of distance, which most buffers are based on. The requirement for the project to construct a secondary barrier wall along the eastern property line would further buffer project activities from the adjacent riparian corridor.

The tributary and associated riparian woodland provide suitable habitat for foraging, resting, and possibly breeding (if suitable plunge pools are present) for CRLF. Ponds and pools that are suitable for CRLF breeding usually have a minimum depth of 20 inches, but CRLF do sometimes breed successfully in pools as shallow as 10 inches.
22 Regardless of water depth, suitable
breeding habitat must contain water during the entire development period for eggs and tadpoles, which is considered to be around 5 months during the winter and spring. Also, CRLF from nearby locations in Tassajara Creek are unlikely to disperse through the site due to the existing barrier along the southern boundary and the intervening houses and school, which are unsuitable as foraging or movement habitat and form a barrier to dispersal from occupied habitat.

The proposed project would result in the conversion of upland habitat potentially used by these species. Given that this species can still disperse around the site, a large amount of surrounding habitat is present, the project would not create a barrier to movement, and the project would not affect expected breeding habitat, impacts associated with habitat loss/conversion would be less than significant.

However, the proposed project could result in construction-related direct and indirect impacts to CRLF and CTS, which are known to occur near the site. Grading and other construction activities could result in mortality or harm if individual CRLF or CTS using burrows, soil crevices, or other retreats within the project site. Migrating CRLF or CTS may also seek refuge under construction equipment and in excavations and trenches, exposing them to potential harm from other construction activities. In the absence of avoidance and minimization measures, spills of oil or fuel from construction equipment could impact habitat for these species and food-related trash left on the construction site could attract additional predators, leading to

22 Fellers. 2005. Rana draytonii Baird and Girard 1852, California Red-Legged Frog. In M. Lannoo (ed.), Amphibian Declines: The Conservation Status of United States Species. Volume 2, pp. 552 -554. University of California Press, Berkeley.
96 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 60

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
increased predation pressure on these species. Therefore, construction-related direct and indirect impacts are potentially significant. The proposed project would be required to implement Mitigation Measures 3.7/20.0 through 3.7/22.0, as identified in the Eastern Dublin EIR. Implementation of these measures would reduce potential direct impacts to CRLF and CTS to a less-than-significant level by requiring pre-construction surveys and establishment of a buffer around identified breeding sites for these species.

Western Pond Turtle. The western pond turtle is a California Species of Special Concern. Pond turtles use permanent or nearly permanent water bodies in a variety of habitats. They can be found in ponds, marshes, rivers, streams, and irrigation ditches within grasslands, woodlands, and open forests. Basking sites such as logs, rocks, mats of floating vegetation, or open mud banks are necessary for thermoregulation. Upland areas, frequently in grassland, are used for egg laying. Pond turtles could pass through the site, especially when water is present within the adjacent tributary. Pond turtles have been recorded approximately 0.1 mile of the site in Tassajara Creek.
23 Pond turtles could occur in the tributary and riparian woodland south of the project site.

The proposed project could result in direct and indirect impacts to western pond turtle. No construction activities are proposed within ponds or pools providing suitable habitat for this species. However, western pond turtle could occur in the tributary and adjacent uplands and could nest along the banks of the tributary or adjacent riparian or grassland habitat (known as communal/traditional nesting areas). Therefore, grading and other construction activities could result in mortality or harm of individual western pond turtles. In the absence of avoidance and minimization measures, spills of oil or fuel from construction equipment could impact habitat for this species and food-related trash left on the construction site could attract additional predators, leading to increased predation pressure on the species. Therefore, construction- related direct and indirect impacts are potentially significant. The proposed project would be required to implement Mitigation Measures 3.7/20.0 through 3.7/22.0, as identified in the Eastern Dublin EIR. Implementation of these measures would reduce potential direct impacts to western pond turtle to a less-than-significant level by requiring pre-construction surveys for western pond turtle and establishment of a buffer around identified breeding sites for western pond turtle.

Burrowing Owl. Burrowing owl is a California Species of Special Concern that occurs in open, well-drained grasslands with abundant small mammal burrows, particularly those of California ground squirrels. Burrowing owls also prefer areas with short vegetation so they can easily scan their surroundings and spot potential predators.
24 The closest CNDDB occurrence is a 2008
record of an occurrence approximately 0.9 mile from the site.25 The presence of ground squirrel burrows and low grass height in some areas provide suitable habitat conditions for the species,

23 CDFW. 2023. op. cit.
24 Zarn, M., 1974. Burrowing owl (Speotyto cunicularia hypugaea). Habitat Management Series for Unique or Endangered Species, Technical Report T-N-250. Bureau of Land Management, Denver, Colorado. 25 CDFW. 2023, op. cit.
97 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 61

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
which could winter or nest at or near the site. No owls or sign of their presence were observed during the reconnaissance survey, but burrowing owls may nest and/or winter within the grasslands in the project area.

Construction-related activities could result in loss or abandonment of an active burrowing nest through direct disturbance of an occupied burrow or through noise, vibration, or visual disturbance. In addition, construction-related activities could result in harm to wintering burrowing owls, should they occur in or near the construction area. The proposed project would be required to implement Mitigation Measures 3.7/20.0 and 3.7/27.0, as identified in the Eastern Dublin EIR. Implementation of these measures would reduce potential impacts to burrowing owl to a less-than-significant level by requiring pre-construction surveys for burrowing owl and establishment of a buffer around identified burrowing owl nests.

Northern Harrier, White-tailed Kite and Other Nesting Birds The northern harrier is a California Species of Special Concern that occurs in grasslands, fields, marshes, and meadows. This raptor could nest in the grasslands and/or ruderal habitat at or near the site.

The white-tailed kite is a California Fully Protected Species. This species nests in trees or large shrubs with dense foliage located near suitable foraging habitat (e.g., grasslands, marshes, agricultural fields). Preferred prey includes voles and mice. Although no nests were observed during the reconnaissance survey, the numerous trees near the site provide suitable nest sites and foraging habitat is present in the ruderal grasslands.

The proposed project has the potential to impact other special-status birds, such as short-eared owl, northern harrier, white-tailed kite, and loggerhead shrike, and other nesting birds protected by the MBTA and/or California Fish and Game code, either directly from removing the nest or indirectly from noise or human presence during construction of the project.

Breeding seasons vary from year to year depending on the species, weather, and other conditions, but nesting birds could be disturbed anytime from February through August. Within the project area, birds may nest in trees, shrubs, grasslands, bare ground, and on manmade structures and equipment. Breeding birds are most likely to abandon nests early in the nest cycle. If the young birds are forced to fledge early, they could be subject to predation or starvation, which could result in reproductive failure.

Project contract specifications (as stipulated in the conditions of approval) would stipulate that vegetation removal should occur outside of the nesting season, if possible, which is typically January 1 through September 15. If vegetation removal or construction activities during the nesting season are not avoidable, project contract specifications would stipulate that, in compliance with the MBTA and the California Fish and Game Code, the project applicant should retain a qualified biologist to conduct a pre-construction survey within 36 hours prior to construction activities. The survey area should include the proposed construction site and surrounding habitat areas that could be indirectly impacted by increased noise and vibration. If active bird nests are observed within the direct and/or indirect disturbance limits, the qualified biologist should identify an appropriately sized exclusion zone around the nest in which no work would be allowed until the qualified biologist determines that the nest is no longer active. 98 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 62

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
In addition, the proposed project would be required to implement Mitigation Measure

3.7/20.0, as identified in the Eastern Dublin EIR, which requires a pre-construction survey for sensitive species prior to project construction. Compliance with the requirements of the MBTA and California Fish and Game Code and implementation of Mitigation Measure 3.7/20.0 identified in the Eastern Dublin EIR would ensure that the proposed project would result in less- than-significant impacts to northern harrier, white-tailed kite, and other nesting birds.

Golden Eagle. The golden eagle is a California Fully Protected Species. This species typically nests in sheltered groves of tall trees. A large stick nest, which has been used by nesting golden eagles, was observed approximately 200 feet to the east in the eucalyptus grove during the reconnaissance survey. This nest has been used by golden eagles for several years based on observations by LSA biologists. A golden eagle was observed flying north of the eucalyptus grove during the reconnaissance survey, suggesting that this nesting territory is likely active.

The proposed project has the potential to indirectly impact the adjacent golden eagle nest due to noise or human presence during construction of the project. The current nest is situated approximately 200 feet from the site within an offsite eucalyptus grove. This nest could be disturbed during construction activities anytime from February through June, but due to the nest’s location within close proximity to a school, these nesting birds are likely habituated to ongoing disturbance. The eagles are most likely to abandon nests early in the nest cycle. If the young birds are forced to fledge early, they could be subject to predation or starvation, which could result in reproductive failure. Implementation of Mitigation Measure 3.7/20.0, and Mitigation Measures 3.7/23 through 3.7/26.0, identified in the Eastern Dublin EIR and listed above, would reduce potential impacts to golden eagle to a less-than-significant level by requiring that preconstruction surveys are conducted and that construction activities are prohibited within the buffer zone during the nesting season.

With implementation of Mitigation Measure 3.7/20.0 and Mitigation Measures 3.7/23.0 through MM 3.7/26.0 identified in the Eastern Dublin EIR and listed above, potential impacts to golden eagle would be reduced to a less-than-significant level.

Pallid Bat and Western Red Bat. The pallid bat and western red bat are a California Species of Special Concern that could roost and/or forage within the site. Pallid bats roost in caves, tunnels, and occasionally buildings and hollow trees. Western red bat typically roosts in riparian trees and forages in or near riparian habitat. Suitable roosting habitat may be present in the structures and larger trees on and adjacent to the site. No bat roosts or signs of roosting bats were observed in any of the onsite structures during the reconnaissance-level survey.

Bats, including special-status bats, such as the pallid bat and western red bat, could roost in the structures and large trees in the project area and forage on the project site. Roosting bats could be disturbed, killed, or injured by tree removal activity, if present in construction areas. Trees may be trimmed or removed. Disturbance of roosting special-status bats would be a potentially significant impact. All bats are protected from take as non-game mammals under Section 4150 of the California Fish and Game Code. Therefore, to ensure compliance with Section 4150 of the California Fish and Game Code, project contract specifications as stipulated in the conditions of 99 City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 63

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
approval) should stipulate that the project applicant retain a qualified biologist to conduct a pre-construction survey for roosting bats within a week prior to tree removal or trimming activities. If maternity roosts or nonvolant (flightless) bats are found to be roosting in trees or other areas subject to direct or indirect project disturbance, a protective buffer should be established wherein no project activities will take place until the qualified biologist confirms that roosting and nonvolant bats are absent. The qualified biologist will monitor any tree trimming activities. In addition, the proposed project would be required to implement Mitigation Measure 3.7/20.0, as identified in the Eastern Dublin EIR, which requires a pre- construction survey for sensitive species prior to project construction. Compliance with the requirements of the California Fish and Game Code and implementation of Mitigation Measure

3.7/20.0 identified in the Eastern Dublin EIR would ensure that the proposed project would result in less-than-significant impacts to pallid bat and western red bat.

Conclusion. As indicated above, due to the site’s proximity to open space lands that are part of the Northern Drainage Conservation Area (NDCA) and the unnamed tributary of Tassajara Creek, implementation of the proposed project has the potential to adversely affect candidate, sensitive, or special status species, resulting in potentially significant impacts. Implementation of the mitigation measures identified in the Eastern Dublin EIR and listed above, would be required to reduce potential impacts to special-status species. With implementation of the mitigation measures identified in the Eastern Dublin EIR and compliance with the MBTA and California Fish and Game Code, impacts to special-status species would be reduced to a less- than-significant level.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts to special-status species other than what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(b) Substantial adverse effect on any riparian habitat or other natural community No New Impact. CDFW tracks the occurrences of natural plant communities that are of limited distribution Statewide or within a county or region and are often vulnerable to environmental effects of projects. A Manual of California Vegetation, Second Edition, lists vegetation alliances with State rarity rankings of S1-S3 as considered “highly imperiled” and project impacts to “high-quality occurrences” of these alliances could be considered significant under CEQA. Most types of wetlands, including alkali wetlands, and riparian communities are also considered sensitive natural communities due to their limited distribution in California. The CNDDB does not identify any sensitive natural communities on the site and no sensitive plant communities were observed during the reconnaissance-level survey. However, riparian woodland occurs along the southern boundary of the project site within the 20-foot setback from the top of the creek bank. This area would be preserved as part of the proposed project. No other riparian habitat is present on the project site; therefore, the proposed project would not have a substantial adverse effect on any riparian habitat or other natural community as no such 100
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 64

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
community occurs within the development footprint. Further, implementation of Mitigation Measures 3.7/6.0, 3.7/9.0, 3.7/14.0, and 3.7/17.0 identified in the Eastern Dublin EIR and listed above, which require preservation of riparian corridors, maintenance of natural stream channels, and implementation of erosion and sedimentation control and construction during the dry season, would ensure that impacts to these features would be reduced to a less than significant level. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR.

Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts to riparian habitat other than what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(c) Substantial adverse effect on wetlands
No New Impact. The project site does not contain any wetlands or other jurisdictional features.

A tributary to Tassajara Creek is situated just south of the site, while a ponded potential seasonal wetland was observed just east of the site. However, the proposed project would avoid impacts to these features as these features do not occur within the development footprint. Further, implementation of Mitigation Measures 3.7/6.0, 3.7/9.0, 3.7/14.0, and

3.7/17.0 identified in the Eastern Dublin EIR and listed above, which require preservation of riparian corridors, maintenance of natural stream channels, implementation of erosion and sedimentation control and construction during the dry season, would ensure that impacts to these features would be reduced to a less than significant level. Therefore, the proposed project would not have a substantial adverse effect on wetlands. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to wetlands other than what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(d) Interfere or impede the movement of migratory fish or wildlife No New Impact. Wildlife movement includes migration (i.e., usually annual roundtrip), inter- population movement (i.e., long-term genetic flow), and small travel pathways (i.e., daily movement corridors within an animal’s territory). While small travel pathways usually facilitate movement for daily home range activities such as foraging or escape from predators, they also provide connection between outlying populations and the main corridor, permitting an increase in gene flow among populations. In the San Francisco Bay Area, landscape elements that facilitate local and/or regional wildlife movement include stream drainages, canyons, ridges, or other prominent natural or man-made landscape features.

The proposed project would not substantially interfere with wildlife movement or corridors.

Because of the existing school north of the project site and the houses along the western boundary, the extent of terrestrial or amphibian wildlife movement under existing conditions is 101
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 65

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
limited and would not be affected by development of the proposed project. The riparian woodland and tributary provide a wildlife movement corridor, but the riparian woodland and intermittent tributary would be preserved as part of project implementation; therefore, wildlife that currently move through this corridor would continue to do so after project construction.

Wildlife that currently move through the site would likely continue to move through the site during and after construction of the project since most of the species that occur in the area are generalists that are adept at moving through urban landscapes. Therefore, impacts to wildlife movement corridors would be less than significant.

The project site does not contain native wildlife nursery sites, such as heron rookeries or salmonid spawning areas. Any bat roosts or bird nests would be protected by implementing Mitigation Measure 3.7/20.0 identified in the Eastern Dublin EIR and complying with the provisions of the MBTA and California Fish and Game Code.

Because the project site is already developed with an existing school and residential uses and provides limited opportunity for wildlife movement and does not support any native wildlife nursery sites, development of the proposed project would not interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors or impede the use of native wildlife nursery sites. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to wildlife movement other than what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (e) Conflict with local policies or ordinance protecting biological resources, include tree preservation
No New Impact. The following discussion addresses the project’s consistency with applicable local policies protecting biological resources.

Northern Drainage Conservation Area – Dublin Ranch Preserve. The project site abuts the NDCA unit of the Dublin Ranch Preserve (preserve) to the south, as described above in the Environmental Setting. The preserve was established in 2010 and is currently managed by the CNLM as habitat for CRLF, CTS, golden eagle, burrowing owl, and San Joaquin kit fox. These species are the primary ones of concern to the USFWS, CDFW, and local municipalities when evaluating potential development impacts on biological resources. None of these species are expected to occur on the site due to past and ongoing disturbance and consequent lack of habitat. CRLF are known to occur in the NDCA and could move and forage along the adjacent riparian corridor but would be prevented from moving onto the site by the sheet metal barrier at the base of the fence that parallels the southern site boundary. The riparian corridor and annual grasslands to the east are known to support CTS that potentially move through the area.

The only location where they could enter the project site is along its eastern boundary, which 102
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 66

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
does not have a complete barrier fence. The NDCA has supported nesting golden eagles for many years. The current nest site is located approximately 200 feet east of the site. Given the nest’s location within close proximity to the school and ongoing human disturbance, the nesting eagles are likely habituated to human activity and associated noise. Therefore, the proposed project would not result in significant disturbance of the nesting eagles. Therefore, the proposed project would not conflict with the provisions of the Northern Drainage Conservation Area.

East Alameda County Conservation Strategy. The East Alameda County Conservation Strategy (EACCS) is a collaborative document developed by multiple federal, State, and local entities (e.g., Alameda County, East Bay Regional Park District, RWQCB, CDFW, USFWS) that is intended to “provide an effective framework to protect, enhance, and restore natural resources in eastern Alameda County, while improving and streamlining the environmental permitting process for impacts resulting from infrastructure and development projects.” The EACCS enables project proponents to comply with federal and State regulatory requirements within a framework of comprehensive conservation goals and objectives by implementing standardized mitigation requirements. The City of Dublin does not require private development projects to comply with the provisions of the EACCS. Therefore, the proposed project would not conflict with the provisions of the EACCS.

Dublin Municipal Code. Stream setbacks are addressed in Chapter 7.20, Article III of the City’s Municipal Code (Code), which was adopted as a result of Ordinance 52-87. Section 7.20.220 states, “the purpose of setbacks is to safeguard watercourses by preventing activities that would contribute significantly to flooding, erosion, or sedimentation, would inhibit access for watercourse maintenance, or would destroy riparian areas or inhibit their restoration.

Accordingly, no development shall be permitted within setbacks except as otherwise provided herein.” Although the Code does not provide specific setback distances, it defines the Director of Public Works as the primary City staff member responsible for permitting limited development within setbacks and determining setback limits. Section 70.20.230 states that the Director of Public Works “may grant a permit for [limited development within a setback] provided that the above specified purpose would be satisfied. In such cases, the permit applicant shall submit sufficiently detailed plans and specifications, and any additional material required by the Director of Public Works, to demonstrate that a proposed development adjacent to an open channel watercourse would meet the requirements.” The project site is located immediately north of the unnamed tributary of Tassajara Creek, a major regional watercourse located west of the project site. The tributary was previously part of the project site but was subsequently parceled off to be restored and incorporated into a 245-acre permanent conservation easement with open space lands to the east. As described above, the Dublin Municipal Code does not provide specific setback distances; however, the proposed project would maintain a 20-foot setback from the top of the creek bank within which no development is proposed. Construction would be confined to the existing disturbed area of the site and the existing sheet metal barrier would be retained and protected during and after construction. The fence would be identified as an “Environmentally Sensitive Area” (ESA) to be 103
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 67

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
avoided during construction. Therefore, the proposed project would not conflict with Section

7.20, Article III of the City of Dublin Municipal Code.

Eastern Dublin Comprehensive Stream Restoration Program. Consistent with Mitigation Measure 3.7/12 of the Eastern Dublin EIR, the City prepared and adopted the Eastern Dublin Comprehensive Stream Restoration Program to promote the restoration, enhancement and stabilization of Tassajara Creek and its tributaries. The Eastern Dublin Comprehensive Stream Restoration Program establishes a 100-foot setback from Tassajara Creek and its major tributaries. The project site is located within 20 feet of the top of bank of a major tributary to Tassajara Creek and therefore, the existing development on the project site is located within the 100-foot setback prescribed by the Eastern Dublin Comprehensive Stream Restoration Program. The proposed project development would occur within the existing disturbance footprint on the site; therefore, implementation of the proposed project would not increase the encroachment into the stream setback. The proposed project would maintain a minimum 20-foot setback from proposed site improvements and the top of bank. Further, the existing barrier fence along the site’s southern boundary would remain intact, preventing encroachment into the stream corridor. Therefore, implementation of the proposed project would not conflict with the requirements of the Eastern Dublin Comprehensive Stream Restoration Program.

City of Dublin Tree Ordinance. Chapter 5.60 of the City of Dublin Municipal Code requires a tree removal permit for impacts to heritage trees. “Heritage Tree” means any of the following:
 Any oak, bay, cypress, maple, redwood, buckeye, and sycamore tree having a trunk or main stem of twenty-four (24) inches or more in diameter measured at four (4) feet six (6) inches above natural grade;
 Any tree required to be preserved as part of an approved Development Plan, Zoning Permit, Use Permit, Site Development Review or Subdivision Map; or  Any tree required to be planted as a replacement for an unlawfully removed tree.

If trees protected by the City of Dublin’s Heritage Tree Ordinance would be impacted by proposed project, the applicant would be required to obtain a tree removal permit from the City, pay the necessary application fee, and replace impacts trees at a minimum 1:1 ratio.

Compliance with the City’s Heritage Tree Ordinance would ensure potential impacts related to tree removal would be less than significant. Therefore, the proposed project would not conflict with the City’s Heritage Tree Ordinance.

Conclusion. Based on the information provided above, the proposed project would not conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance because the proposed development would occur within the existing disturbance footprint, would not extend into the established stream setback or the Northern Drainage Conservation Area, and would be required to obtain a tree removal permit in compliance with the City’s Heritage Tree Ordinance. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major 104
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 68

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts related to conflicts with local policies or ordinance protecting biological resources other than what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (f) Conflict with adopted habitat conservation or natural community conservation plans No New Impact. The proposed project is not located within any approved local, regional, or state conservation plan. Therefore, the project would not conflict with any approved local, regional, or state habitat conservation plan. The EACCS is not a habitat conservation or natural community conservation plan and the proposed project would not conflict with the policies of the EACCS because the EACCS does not apply to private projects in the City of Dublin.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified cultural resources impacts, nor result in new significant impacts.

With adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new or substantially more severe significant impacts to biological resources beyond what has been analyzed in the Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
American Ornithologists’ Union (AOU). 1998. Check-list of North American Birds. 7th Edition.

American Ornithologists’ Union, Washington, D.C.

Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012.

The Jepson Manual: Vascular Plants of California, Second Edition. University of California Press, Berkeley.
105
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 69

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Bradley, R.D., L.K. Ammerman, R.J. Baker, L.C. Bradley, J.A. Cook, R.C. Dowler, D.J. Schmidly, F.B.

Stangl, Jr., R.A. Van Den Bussche, and B. Würsig. 2014. Revised Checklist of North American Mammals North of Mexico, 2014. Occasional Papers, Museum of Texas Tech University No. 237
California Department of Fish and Wildlife. 2023. California Natural Diversity Database, commercial version dated January 2023. Biogeographic Data Branch, California Department of Fish and Wildlife, Sacramento.

California Department of Fish and Wildlife. 2019. Evaluation of the Petition from the Xerces Society, Defenders of Wildlife, and the Center for Food Safety to List Four Species of Bumble Bees as Endangered Under the California Endangered Species Act. State of California, Natural Resources Agency. Report to the Fish and Game Commission. April 4 California Native Plant Society, Rare Plant Program. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed January 16, 2023].

Crother, B.I. (ed.). 2017. Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding, pp. 1-102. SSAR Herpetological Circular No. 43.

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Fellers. 2005. Rana draytonii Baird and Girard 1852, California Red-Legged Frog. In M. Lannoo (ed.), Amphibian Declines: The Conservation Status of United States Species. Volume 2, pp. 552-554. University of California Press, Berkeley.

Leidy, R.A., G.S. Becker, B.N. Harvey. 2005. Historical Distribution and Current Status of Steelhead/Rainbow Trout (Oncorhynchus mykiss) in Streams of the San Francisco Estuary, California. Center for Ecosystem Management and Restoration, Oakland, CA.

LSA Associates, Inc. 2014. Biological Resources Report for the 6237 Tassajara Road Property Dublin, Alameda County, California. January 15.

LSA Associates, Inc. 2017. Biological Resources Report Update, 6237 Tassajara Road, Dublin.

May 9.

United States Fish and Wildlife Service. 2023. Information for Planning and Consultation (IPaC).

January 16.

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).
106
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 70

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

Xerces Society for Invertebrate Conservation, Idaho Department of Fish and Game, Washington Department of Fish and Game, National Fish and Wildlife Foundation, and U.S. Fish and Wildlife Service.2023. Western Monarch Milkweed Mapper. Available at:
https://www.monarchmilkweedmapper.org.

Zarn, M., 1974. Burrowing owl (Speotyto cunicularia hypugaea). Habitat Management Series for Unique or Endangered Species, Technical Report T-N-250. Bureau of Land Management, Denver, Colorado.

107
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 71

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Cultural Resources

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

5. CULTURAL RESOURCES. Would the project:
a) Cause a substantial adverse change in the significance of a historical resource pursuant to CEQA Guidelines
section 15064.5?
X
b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to section 15064.5? X
c) Disturb any human remains, including those interred
outside of dedicated cemeteries?
X
Environmental Setting
CEQA defines a “historical resource” as a resource which meets one or more of the following criteria:
• Listed in, or eligible for listing in, the California Register of Historical Resources (California Register); • Listed in a local register of historical resources as defined in Public Resources Code (PRC) Section 5020.1(k);
• Identified as significant in a historical resource survey meeting the requirements of Section 5024.1(g) of the Public Resources Code; or
• Determined to be a historical resource by a project's lead agency (PRC Section 21084.1 and State CEQA Guidelines Section 15064.5[a]).

The California Register defines a “historical resource” as a resource that meets one or more of the following criteria: (1) associated with events that have made a significant contribution to the broad patterns or local or regional history of the cultural heritage of California or the United States; (2) associated with the lives of persons important to local, California, or national history; (3) embodies the distinctive characteristics of a type, period, region, or method of construction or represents the work of a master or possesses high artistic values; or (4) has yielded, or has the potential to yield, information important to the prehistory or history of the local area, California, or the nation. Under CEQA, historical resources can include precontact (i.e., Native American) archaeological deposits, historic-period archaeological deposits, historic buildings, and historic districts.

Background research consisting of a records search at the Northwest Information Center (NWIC), a review of historical maps and aerial photographs, a search of the Sacred Lands File (SLF) at the Native American Heritage Commission (NAHC), and a review of published geological 108
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 72

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
information were conducted to determine the potential sensitivity for buried historic and archaeological sites. In addition, a Historic Resources Evaluation (HRE) was prepared to evaluate the potential significance of the existing residential building, which is over 50 years old.

A cultural resources records search was conducted on January 1, 2023, by staff at the NWIC of the California Historical Resources Information System to identify previous archaeological site records and cultural resource studies within the project site and vicinity. The NWIC, an affiliate of the Office of Historic Preservation (OHP), is the official State repository of cultural resources records and reports for Alameda County. The search encompassed the project site and surrounding 0.5-mile radius.

The project site contains a single-story, wood framed, Vernacular-styled, single-family residential building on a rectangular plan constructed in 1925 and located at the wester end of an irregularly shaped 2.64-acre parcel in a semi-rural setting. Background research indicates the residential buildings at 6327 Tassajara Road are associated with the early- to mid-20 th century
growth of the San Ramon Valley, northeastern Alameda County, and California. These building possesses characteristics of the Vernacular architectural style. Based on background research, including a records search, a literature review, archival research, and a field review by an architectural historian, the building’s eligibility for inclusion on the California Register was evaluated in accordance with the criteria listed above. As described in the HRE, although the existing building is a typical example of the mid-20th century development of the San Ramon Valley in northeastern Alameda County and California, it is not associated with events that have made a significant contribution to the broad patterns of California’s history and cultural heritage; is not associated with the life of persons important in our past; is not notable for its architectural or design qualities or as an important example of its architectural style; and is unlikely to yield information important to the history of the City of Dublin, the San Ramon Valley, Alameda County, or California. Therefore, the residence and detached shed and shop buildings are not significant under any evaluative criteria of the California Register. For these reasons, LSA concludes that the buildings at 6237 Tassajara Road do not appear eligible for inclusion in the California Register under any level of significance either individually or as part of an unidentified historic district and do not appear to qualify as historical resources for the purposes of CEQA (Public Resources Code [PRC] Section 21084.1). North of and adjacent to the project site is the Quarry Lane School, a private K-12 school at 6363 Tassajara Road. The campus contains an assemblage of buildings constructed in phases beginning circa 1982 and have not yet reached sufficient age to warrant evaluation for historical significance and inclusion in the California Register.

One previous cultural resource study overlapped the current project site, and another 18 were conducted within a half-mile radius. No archaeological resources are recorded within the project boundary. One archaeological resource was recorded within a half-mile of the project site.
109
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 73

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
A request was submitted to the NAHC to search the Sacred Lands File (SLF) for Native American cultural resources that may be impacted by the proposed project. The NAHC maintains the SLF database and is the official State repository of Native American sacred-site location records in California. The NAHC responded to the SLF search request on December 27, 2022, and stated that the results were negative and that there were no known Native American cultural resources in the project site. It was noted, however, that “the absence of specific site information in the SLF does not indicate the absence of cultural resources in any project area.” The review of aerial photographs and historic maps indicates that the project site has been developed since prior to 1941. Tassajara Creek is less than 1,000 feet west of the project site, and an unnamed stream creates the southern boundary of the project site. Both water sources would have been a food and water source for Native American occupants of the region. Clear Lake clay deposits (which have potential to contain previously unidentified archaeological deposits) likely extend at least 60 to 65 inches deep throughout the project site.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to the disruption or destruction of identified and unidentified prehistoric resources, and disruption or destruction of identified and unidentified historic resources. Mitigation measures were identified to reduce potential impacts to a less-than-significant level. The following mitigation measures would apply to the proposed project:

MM 3.9/1.0 All locations of prehistoric resources will need a program of mechanical and/or hand subsurface testing to determine the presence or absence of midden deposits associated with the surface indictors of aboriginal presence.

MM 3.9/2.0 All locations containing either midden components or concentrations of cultural materials located on the surface will be recorded on State of California site survey forms. The borders of any midden deposits or concentrations of cultural materials (other than single isolated artifact discoveries) will be staked so that accurate location maps can be produced by professional survey teams.

MM 3.9/3.0 If it can be demonstrated that these recorded and mapped locations will be impacted in any manner by future construction or indirectly impacted as a result of increased access to the area, a plan of evaluative testing of each resource will have to be devised in order to prepare responsive mitigation measures. Evaluative testing will consist of the collection and analysis of any surface concentrations of cultural materials, and the hand excavation and analysis of the scientific content of any midden components discovered during present or absence testing.

MM 3.9/4.0 The City shall retain the services of a qualified archaeologist to develop a protection program for prehistoric sites which contain either a surface or subsurface 110
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 74

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
deposit of cultural materials or information which qualify under Appendix K of CEQA as “significant” and which are located in areas of the project site where development will significantly alter the current conditions of the prehistoric resource.

MM 3.9/5.0 The discovery of historic or prehistoric remains during grading and construction will result in the cessation of such activities until the significant and extent of those remains can be ascertained by a certified archaeologist.

MM 3.9/6.0 The City of Dublin will require the following series of actions as part of the application process for development in eastern Dublin: site sensitivity determination; detailed research and field reconnaissance by a certified archaeologist; development of a mitigation plan pursuant to the policies of the Eastern Dublin Specific Plan and current CEQA guidelines.

MM 3.9/7.0 All properties with historic resources, which may be impacted by future development shall be subjected to in-depth archival research to determine the significance of the resources prior to any alteration.

Project Impacts and Mitigation Measures
(a) Historic resources
No New Impact. For a cultural resource to be considered a historical resource (i.e., eligible for listing in the California Register of Historical Resources), it generally must be 50 years or older.

Under CEQA, historical resources can include precontact (i.e., Native American) archaeological deposits, historic-period archaeological deposits, historic buildings, and historic districts. CEQA requires agencies considering projects that are subject to discretionary action to consider the potential impacts on cultural resources that may occur from project implementation (see CEQA Guidelines Section 15064.5).

As described above, the project site contains a single-story, wood framed, Vernacular-styled, single-family residential building on a rectangular plan constructed in 1925. The residence and associated outbuildings were evaluated for significance as a historical resource. They were found to be not eligible, either individually or as a group, for inclusion on the California Register. Although these existing buildings would be demolished as part of the proposed project, this impact would be less than significant as these buildings do not qualify as historical resources for the purposes of CEQA.

However, given the historic-period development of the project site, the proximity of the project site to water, and the types of sediments mapped in the project site, implementation of the project has potential to impact subsurface cultural resources dating to either the historic period or the precontact period. These features could be uncovered during ground disturbing activities associated with the proposed project. Implementation of Mitigation Measure 3.9/4.0 from the Eastern Dublin EIR, as modified below (with additions in double-underline and deletions in strikethrough), and Mitigation Measure 3.9/5.0 from the Eastern Dublin EIR would be implemented to reduce potential impacts to a less than significant level. 111
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 75

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
MM 3.9/4.0 The City shall retain the services of a qualified archaeologist to develop a protection program for prehistoric and/or historic-period sites which contain either a surface or subsurface deposit of cultural materials or information which qualify under Appendix K of CEQA as “significant” and which are located in areas of the project site where development will significantly alter the current conditions of the prehistoric resource. An archaeologist (either an archaeologist who meets the Secretary of the Interior’s Professional Qualifications Standards for Archaeology or an archaeologist supervised by such an archaeologist) shall monitor all ground-disturbing activities associated with project implementation in non-bedrock sediments, including clearing and grubbing activities. Archaeological monitoring shall occur on a full-time basis during these excavation activities until the Project Archaeologist, based on the archaeological monitor’s observations, is satisfied that there is little likelihood of encountering intact archaeological deposits. The Project Archaeologist may also determine it is appropriate to reduce monitoring to spot-checking on a part-time basis.

With implementation of Mitigation Measures 3.9/4.0 (as modified above) and 3.9/5.0 from the Eastern Dublin EIR, which requires archaeological monitoring and work stoppage in the event of an archaeological discovery, potential impacts to archaeological historical resources would be reduced to a less-than-significant level.

Although no archaeological resources have been identified at the project site, it cannot be entirely ruled out that archaeological cultural resources could be encountered during project construction at the project site. Should archaeological deposits be encountered during project ground disturbance, a substantial adverse change in the significance of a historical resource would occur from its demolition, destruction, relocation, or alteration such that the significance of the resource would be materially impaired (CEQA Guidelines Section 15064.5(b)(1)). If such resources are encountered, implementation of Mitigation Measure 3.9/5.0 from the Eastern Dublin EIR, which requires work stoppage in the event of an archaeological discovery, potential 112
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 76

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
impacts to archaeological would be reduced to a less-than-significant level. implementation of Mitigation Measure 3.9/5.0 as identified in the Eastern Dublin EIR would reduce any potential impacts to archaeological and/or Native American resources to a less-than-significant level.

Therefore, the project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with implementation of the mitigation measures identified in the Eastern Dublin EIR, there would be no new impact related to archaeological resources other than what has been analyzed in the previous Eastern Dublin EIR. No other CEQA standards for supplemental review are met for this impact. No additional environmental analysis is required.
(c) Human remains
No New Impact. Based on previous archaeological investigation and analysis, there is a low potential for the disturbance of archaeological cultural resources or human remains. However, in the event that human remains are encountered at any time during project work, State Health and Safety Code Section 7050.5 states that no further disturbance shall occur until the County Coroner has made a determination of origin and disposition pursuant to PRC Section 5097.98.

The County Coroner must be notified of the find immediately. If the remains are determined to be Native American, the County Coroner would notify the NAHC within 24 hours. The NAHC would determine and notify a Most Likely Descendant (MLD) per PRC 5097.98. With the permission of the landowner or his/her authorized representative, the MLD may inspect the site of the discovery. The MLD shall complete the inspection and make recommendations or preferences for treatment within 48 hours of being granted access to the site. The MLD’s recommendations may include scientific removal and nondestructive analysis of human remains and items associated with Native American burials, preservation of Native American human remains and associated items in place, relinquishment of Native American human remains and associated items to the descendants for treatment, or any other culturally appropriate treatment.

Compliance with Section 7050.5 of the California Health and Safety Code and PRC Section 5097.98 regarding the treatment of human remains, which requires cessation of work, notification of the County Coroner, coordination with the NAHC and the MLD and treatment of the remains in accordance with the MLD’s recommendations, potential impacts to human remains would be less than significant. Therefore, the project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impact related to human remains other than what has been analyzed in the previous Eastern Dublin EIR. No other CEQA standards for supplemental review are met for this impact.

Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the 113
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 77

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified cultural resources impacts, nor result in new significant impacts.

With adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, as modified above, there would be no new or substantially more severe significant impacts to cultural resources beyond what has been analyzed in the Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

114
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 78

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Energy

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

13. ENERGY. Would the project:
a) Result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or
operation?
X
b) Conflict with or obstruct a state or local plan for
renewable energy or energy efficiency?
X
Environmental Setting
Electricity
Electricity is a man-made resource. The production of electricity requires the consumption or conversion of energy resources (including water, wind, oil, gas, coal, solar, geothermal, or nuclear resources) into energy. Electricity is used for a variety of purposes (e.g., lighting, heating, cooling, and refrigeration, and for operating appliances, computers, electronics, machinery, and public transportation systems).
26 In 2021, California consumed approximately
280,738 gigawatt-hours (GWh) or 280,738,376,720 kWh.27 Of this total, Alameda County consumed 10,237 GWh or 10,237,401,835 kWh.28
Natural Gas
Natural gas is a non-renewable fossil fuel. Fossil fuels are formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over many years. Natural gas is a combustible mixture of hydrocarbon compounds (primarily methane) that is used as a fuel source. Natural gas is found in naturally occurring reservoirs in deep underground rock formations. Natural gas is used for a variety of uses (e.g., heating buildings, generating electricity, and powering appliances such as stoves, washing machines and dryers, gas fireplaces, and gas grills).
29 In 2021, California consumed

26 California Energy Commission, 2021. 2021 Total System Electric Generation. Website:
https://www.energy.ca.gov/data-reports/energy-almanac/california-electricity-data/2021-total-system- electric-generation (accessed January 2023).
27 California Energy Commission, 2022a. Energy Consumption Data Management Service. Electricity Consumption by County. Website: www.ecdms.energy.ca.gov/elecbycounty.aspx (accessed January 2023). 28 Ibid.
29 U.S. Energy Information Administration. 2021. Natural Gas Explained -Use of Natural Gas. Website:
https://www.eia.gov/energyexplained/natural-gas/use-of-natural-gas.php (accessed January 2023). 115
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 79

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
approximately 11,922 million therms or 11,922,705,640 therms, while Alameda County consumed approximately 377 million therms or approximately 377,052,605 therms.30 Fuel
Petroleum is also a non-renewable fossil fuel. Petroleum is a thick, flammable, yellow-to-black mixture of gaseous, liquid, and solid hydrocarbons that occurs naturally beneath the earth's surface. Petroleum is primarily recovered by oil drilling. It is refined into a large number of consumer products, primarily fuel oil and gasoline. Gasoline is the most used transportation fuel in California, with 97 percent of all gasoline being consumed by light-duty cars, pickup trucks, and sport utility vehicles. Based on fuel consumption obtained from EMFAC2021, vehicle trips in Alameda County in 2023 are anticipated to consume 152,376,810 gallons of diesel fuel and 553,890,645 gallons of gasoline.

Previous CEQA Documents
Eastern Dublin EIR
At the time the Eastern Dublin EIR was prepared, the Environmental Checklist Form (Appendix G of the CEQA Guidelines) did not include energy. Therefore, the Eastern Dublin EIR did not specifically analyze impacts to energy. Utilities and service systems impacts and mitigation measures, some of which are related to the demand for energy of additional service systems, were identified and found that the demand for utility extensions and consumption of non- renewable natural resources would result in a significant and unavoidable impact. The following mitigation measure would apply to the proposed project:

MM 3.4/46.0 Site Planning, Building Design, and Landscaping. The City shall require project applicants to demonstrate that specific site planning, building design, and landscaping measures have been incorporated into their projects to conserve the use of energy during construction and long-term operation. Such measures might include orientation of lots; buildings and windows; protection of solar access; active and passive solar applications; use of energy efficient materials; and function of landscaping. These measures will be incorporated into an energy conservation plan and shall be reviewed and approved by the City as part of specific development proposals.

Project Impacts and Mitigation Measures
(a) Wasteful consumption of energy resources
No New Impact. The Eastern Dublin EIR determined that development of the EDSP area would result in a significant and unavoidable impact due to the consumption of non-renewable natural resources, including energy consumption and therefore a Statement of Overriding Considerations was adopted for the project. Mitigation measures were identified in the Eastern Dublin EIR to minimize this impact and Mitigation Measure 3.4/46.0, as identified above, would

30 California Energy Commission, 2022b. Energy Consumption Data Management Service. Gas Consumption by County. Website: www.ecdms.energy.ca.gov/gasbycounty.aspx (accessed December 2022). 116
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 80

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
apply to the proposed project. Since preparation of the Eastern Dublin EIR, the California Building Energy Efficiency Standards contained in Title 24 in the California Code of Regulations have been revised and updated to include more stringent requirements to prevent the unnecessary consumption of energy. Development on the project site would be required to comply with these standards. In addition, Chapter 7.94, Green Building, of the City of Dublin Municipal Code encourages sustainable construction in the following categories: planning and design, energy efficiency, water efficiency and conservation, materials conservation, and resource efficiency and environmental quality. Adherence to these regulatory requirements and implementation of Mitigation Measure 3.4/46.0, identified in the Eastern Dublin EIR and listed above, would ensure that the proposed project would not result in the wasteful consumption of energy resources.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to energy beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
California Energy Commission, 2021. 2021 Total System Electric Generation. Website:
https://www.energy.ca.gov/data-reports/energy-almanac/california-electricity- data/2021-total-system-electric-generation (accessed January 2023).

California Energy Commission, 2022a. Energy Consumption Data Management Service.

Electricity Consumption by County. Website:
www.ecdms.energy.ca.gov/elecbycounty.aspx (accessed January 2023). 117
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 81

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
California Energy Commission, 2022b. Energy Consumption Data Management Service. Gas Consumption by County. Website: www.ecdms.energy.ca.gov/gasbycounty.aspx (accessed December 2022).

U.S. Energy Information Administration. 2021. Natural Gas Explained-Use of Natural Gas.

Website: https://www.eia.gov/energyexplained/natural-gas/use-of-natural-gas.php (accessed January 2023).

Dublin, City of. 2002. Final Revised Supplemental Environmental Impact Report, State Clearinghouse No. 2001052114, East Dublin Properties Stage 1 Development Plan and Annexation. March.

Haag, Jerry. 2005. Fallon Village Project, Final Supplemental Environmental Impact Report, State Clearinghouse No. 2005062010. November.

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.
118
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 82

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Geology and Soils

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

6. GEOLOGY AND SOILS. Would the project:
a) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death
involving:

i) Rupture of a known earthquake fault, as delineated
on the most recent Alquist-Priolo Earthquake Fault
Zoning Map issued by the State Geologist for the
area or based on other substantial evidence of a
known fault?
X
ii) Strong seismic ground shaking? X
iii) Seismic-related ground failure, including
liquefaction?
X
iv) Landslides? X
b) Result in substantial soil erosion or the loss of topsoil? X c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project,
and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse?
X
d) Would the project be located on expansive soil, as
defined in Table 18-1-B of the Uniform Building Code
(1994), creating substantial direct or indirect risks to life or property?
X
e) Would the project have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available
for the disposal of waste water?
X
f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?
X
Environmental Setting
The project site is located within the Coast Range Geomorphic Province of Northern California.

This province is generally characterized by northwest-trending mountain ranges and intervening valleys, which reflect the dominant northwest structural trend of the bedrock in the 119
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 83

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
region. The Calaveras Fault separates the lowlands of the Dublin Valley from the hill areas to the west. Active faults in the vicinity of the project site include the Hayward Fault, approximately 8.3 miles to the west, the Calaveras Fault, located approximately 1.8 miles to the west, and the Greenville Fault, located approximately 9.6 miles to the east. The project site is not located within a State-designated Alquist-Priolo Earthquake Fault Zone.

The project site is located at the base of a west facing hill. The ground surface is essentially level with an average elevation of 438 feet above mean sea level (msl).

Based on subsurface exploration conducted as part of the Geotechnical Investigation, soils encountered on the project site included fill, clay, silt, sand and gravel. Fill, consisting of asphalt concrete and crushed rock, was encountered near the ground surface, varying in thickness between six inches and 12 inches. Near-surface native soil consists of dark brown to black plastic clay to a depth of between three and five feet. The clay is underlain by yellowish-brown sandy and silty clay that is moist to very moist and stiff to very stiff and has occasional gravel.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to earthquake ground shaking, alteration of landforms, expansive soils, landslide and slope stability, and erosion and sedimentation. With the exception of the primary effects associated with seismic ground shaking, which was determined to be significant and unavoidable and therefore a Statement of Overriding Considerations was adopted for the project. All other impacts related to geology and soils would be reduced to less than significant with implementation of the mitigation measure identified in the Eastern Dublin EIR. The following mitigation measures would apply to the proposed project:

MM 3.6/1.0 The primary effects of ground shaking to structures and infrastructures can be reduced to a generally acceptable level below failure/loss of life by using modern seismic design for resistance to lateral forces in construction. Building in accordance with Uniform Building Code and applicable County and City code requirements should reduce the potential for structural failure, major structural damage, and loss of life.

However, some structural damage may occur, and it is possible that some residences/structures and infrastructures will not be safe for occupation/use after a large earthquake.

MM 3.6/2.0 In relatively flat areas which can be developed with minimal grading (the southern portion of the Project site and along Tassajara and Cottonwood Creeks):
 Locate improvements off (setback from) unstable and potentially unstable landforms such as landslides, colluvium filled swales, creek banks, and steep hill slopes.
 Remove, stabilize or reconstruct potentially unstable landforms, or 120
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 84

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Employ modern design, including appropriate foundation design and applicable codes and policies, in the construction of improvements that must be located on potentially unstable landforms or in areas underlain by alluvium with shallow groundwater levels which could be locally susceptible to liquefaction.

MM 3.6/4.0 Engineered retention structures and surface and subsurface drainage improvement should be uses as appropriate to improve the stability of sidehill fills and potentially unstable materials, particularly colluvium not entirely removed by grading.

MM 3.6/5.0 Seismically induced fill settlement can be substantially reduced if fills are properly designed with keyways and subsurface drainage, and are adequately compacted (i.e., minimum 90 percent relative compaction as defined by the American Society for Testing and Materials (ASTM) test method D1557).

MM 3.6/6.0 Design roads, structural foundations, and underground utilities to accommodate estimated settlement without failure, especially across transitions between fills and cuts. Potentially unstable stock pond embankments should be removed in development areas, unless they are reconstructed to current earthquake design standards.

MM 3.6/7.0 Final design of improvements in the Project site should be made in conjunction with a design-level geotechnical investigations and the reports should be submitted to the City of review prior to issuing any permits. These investigations should incorporate stability analysis of both natural slopes that could impact planned improvements, and planned engineered (cut and fill) slopes, assuming saturated conditions and earthquake shaking. Significant slopes should achieve a minimum factor of safety against failure of 1.5 for static conditions (where 1.0 is failure) and 1.2 under design pseudo-static earthquake loading. A displacement analysis should be performed for critical slopes to confirm the effectiveness of mitigation measures.

MM 3.6/14.0 The potential impact of expansive soils and rock with respect to Project improvements can be significantly reduced, or in many cases prevented by the recognition and characterization of site-specific conditions, and the formulation of appropriate design-level geotechnical investigation conducted for each specific proposed project.

MM 3.6/15.0 The potential for shrink and swell of expansive soils and rock can be reduced by controlling moisture and by treatment through measures listed below.

Subsurface drainage alone is not generally effective against the effects of regional wet/drought cycles. Required measures for a specific project should be based on the recommendation of the project geotechnical consultant and approved by the City and include:
 Moisture conditioning prior to construction;
121
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 85

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Construction of surface and subsurface drainage to control infiltration after construction;
 Lime treatment, which can be used to produce non-expansive fill.

MM 3.6/16.0 The potential effects of expansive soil can be reduced by appropriate foundation and pavement design, including those design elements listed below.  Adjustable foundation systems are not generally effective against the effects of regional wet/drought cycles and are considered undesirable because the systems require periodic maintenance, and their use should be discouraged.

Appropriate design criteria should be developed by the project geotechnical consultant and approved by the City:
 Founding structural foundations below the zone of seasonal moisture change;  Use of structurally supported floors; and
 Removal and replacement with non-expansive fill beneath structure slabs and asphaltic concrete.

MM 3.6/27.0 The potential impacts of short-term construction-related erosion and sedimentation can be reduced by timing grading activities to avoid the rainy season as much as possible, and by implementing one or more of the following interim control measures, which are designed to prevent concentration of runoff, control runoff velocity, and trap silt. Required measures for a specific project will be determined by the City and be a requirement of the grading permit.
 Water bars;
 Mulch-and-net blankets on exposed slopes;
 Straw bale dikes;
 Temporary culverts and swales;
 Sediment traps; and/or
 Silt fences.

MM 3.6/28.0 The potential impacts of long-term erosion and sedimentation can be reduced by the appropriate design, construction, and continued maintenance of surface and subsurface drainage of one or more of the following long-term control measures.  Required measures for a specific project should be based on the recommendations of the project geotechnical consultants and approved by the City.
 Construction of sediment catch basins at strategic locations to prevent off site sedimentation from existing and/or potential on-site sources; 122
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 86

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Design and construction of storm sewer systems that incorporate the cumulative effects of project buildout
 Creek bank stabilization and repair of existing gullies;  Revegetation and continued maintenance of graded slopes;  Construction of drainage ditches or cut and fill slopes and/or natural slopes above developed areas;
 Closed downspout collection systems for individual structures;  Design of cut and fill slopes to minimize, as much as possible, natural low velocity sheet flow runoff; and
 Periodic homeowner/landowner maintenance.

Project Impacts and Mitigation Measures
(a) Seismic hazards
No New Impact. Potential impacts related to seismic hazards are described below:

Fault Rupture. The project site is not located within or adjacent to an Alquist-Priolo Earthquake Fault Zone. Therefore, the project would have no impact related to fault rupture.

Ground Shaking. The project site and the entire San Francisco Bay Area are located in a seismically active region subject to strong seismic ground shaking. The intensity of an earthquake is a subjective measure of the perceptible effects of a seismic event at a given point. The Modified Mercalli Intensity (MMI) scale is the most commonly used scale to measure the subjective effects of earthquake intensity. It uses values ranging from I to XII.

Mapping has been compiled by the Metropolitan Transportation Commission (MTC) and Association of Bay Area Governments (ABAG) for the likely shaking intensities in the Bay Area that would have a 10 percent chance of occurring in any 50-year period. A large earthquake (magnitude 6.7 or greater) on one of the major active faults in the region would generate severe (MMI 8) ground shaking at the project site.

The most significant adverse impact associated with strong seismic shaking is potential damage to structures and improvements. Implementation of the proposed project would increase the use of the project site and result in the construction of improvements in areas subject to seismic shaking. The risk of ground shaking impacts is reduced through adherence to the design and materials standards set forth in building codes. The City of Dublin has adopted the 2022 CBC (Title 24, Part 2 of the California Code of Regulations), which provides for stringent construction requirements on projects in areas of high seismic risk. Consistent with MM 3.6/1.0 and MM 3.6/2.0 identified in the Eastern Dublin EIR and described above, the design and construction for the proposed project would be required to conform with, or exceed, current best standards for earthquake resistant construction in accordance with the most recent CBC adopted by the City and with the generally accepted standards of geotechnical practice for seismic design in Northern California. In addition, the proposed project would be designed and 123
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 87

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
constructed in accordance with the site-specific grading and construction techniques identified in the Geotechnical Investigation to reduce impacts related to seismic ground shaking to a less- than-significant level. With adherence to MM 3.6/1.0 and MM 3.6/2.0 identified in the Eastern Dublin EIR, there would be not new or substantially more severe significant impacts related to ground shaking beyond what has been analyzed in the Eastern Dublin EIR.

Liquefaction. Liquefaction is the transformation of loose, fine-grained sediment to a fluid-like state similar to quicksand. This phenomenon occurs due to strong seismic activity and lessens the soil’s ability to support a structural foundation. The primary factors affecting the possibility of liquefaction in soil are: (1) intensity and duration of earthquake shaking; (2) soil type and relative density; (3) overburden pressures; and (4) depth to groundwater. Soil most susceptible to liquefaction is clean, loose, fine-grained sands and non-plastic silts that are saturated.

The California Geological Survey (CGS) has mapped Seismic Hazard Zones that delineate areas susceptible to liquefaction and/or landslides that require proposed new developments in these areas to conduct additional investigation to determine the extent and magnitude of potential ground failure. According to mapping by CGS, the project site is located in an area mapped as a liquefaction hazard zone. However, the Geotechnical Investigation concludes that even under the influence of severe ground shaking, the soils at the project site are unlikely to liquefy. The proposed project would be designed and constructed consistent with the most current earthquake resistance standards for Seismic Zone 4 in the CBC and the site-specific recommendations identified in the Geotechnical Investigation, which includes specifications for site preparation, such as grading and compaction requirements and foundation design criteria.

In addition, implementation of mitigation measures MM 3.6/2.0, MM 3.6/4.0, MM 3.6/5.0, MM

3.6/6.0, and MM 3.6/7.0, identified in the Eastern Dublin EIR and described above would reduce potential impacts associated with these hazards to less than significant by requiring minimal grading and avoidance of unstable landforms, use of retention structures to improve slope stability, adequate compaction of fill material, accommodation of estimated settlement, and implementation of site-specific geotechnical recommendations.

Landslide. As described above, the proposed project is located on generally level terrain and the potential for landslide is low. Therefore, the proposed project would not expose people or structures to potential substantial adverse effects from landslides. This impact would be less than significant.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
(b) Erosion/topsoil loss
No New Impact. The potential for soil erosion exists during the period of earthwork activities and between the time when earthwork is completed, and new vegetation is established, or hardscape is installed. Exposed soils could be entrained in stormwater runoff and transported off the project site. Construction specifications require the preparation of a Stormwater Pollution and Prevention Plan (SWPPP) prior to any ground disturbance activities as required by the National Pollutant Discharge Elimination System (NPDES) General Permit (GP) for Construction (Order 2009-009-DWQ). The SWPPP would provide the details of the erosion control measures to be applied on the project site during the construction period, including Best Management Practices (BMPs) for erosion control that are recognized by the RWQCB.

Additional details regarding the SWPPP are provided in Section 9, Hydrology and Water Quality.

In addition, the proposed project would be required to comply with MM 3.6/27.0 and MM

3.6/28.0, identified in the Eastern Dublin EIR and described above, to reduce short- and long- term erosion and sedimentation associated with project construction and operation.

Therefore, no further environmental review is required for this impact. (c-d) Soil stability
No New Impact. Expansive soils are characterized by the potential for shrinking and swelling as the moisture content of the soil decreases and increases, respectively. Shrink-swell potential is influenced by the amount and type of clay minerals present and can be measured by the percent change of the soil volume. Soils underlying the project site are primarily composed of Clear Lake clay, drained, 0 to 2 percent slopes and Clear Lake clay, drained, 3 to 7 percent slopes, according to the United States Department of Agriculture (USDA) Natural Resources Conservation Service Web Soil Survey. Clear Lake clay is a very deep, poorly drained soil type, with high shrink-swell potential.

The proposed project would be designed and constructed consistent with the most current earthquake resistance standards for Seismic Zone 4 in the CBC and the site-specific recommendations identified in the Geotechnical Investigation, which includes specifications for site preparation, such as compaction requirements and foundation design criteria. Therefore, the project site is not anticipated to become unstable as a result of the proposed project, or potentially result in on- or off-site landslides, liquefaction, lateral spreading or settlement. In addition, implementation of mitigation measures MM 3.6/2.0, MM 3.6/4.0, MM 3.6/5.0, MM

3.6/6.0, and MM 3.6/7.0, identified in the Eastern Dublin EIR and described above would reduce potential impacts associated with unstable soils to a less-than-significant level by requiring minimal grading and avoidance of unstable landforms, use of retention structures to 125
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 89

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
improve slope stability, adequate compaction of fill material, accommodation of estimated settlement, and implementation of site-specific geotechnical recommendations.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, including City development requirements, and mitigation measures identified in the Eastern Dublin EIR there would be no new impacts related to unstable soils beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(e) Soil capability to support wastewater disposal, including septic No New Impact. The proposed project would connect to the existing wastewater conveyance system. On-site treatment and disposal of wastewater is not proposed for the project; therefore, the proposed project would have no impacts associated with soils incapable of supporting alternative wastewater disposal systems.

Excavation for sewer lines would extend to a depth of 7 feet, trenching for utilities would extend to a depth of 5 feet, and excavation for bioretention areas would extend to a depth of 4 feet. Grading for the building pads and roads/parking would extend to depths of 3 feet and 2 feet, respectively. Excavation for these activities may extend into the high sensitivity Livermore Gravel located at undetermined depths below the Surficial Sediments. Therefore, there is a potential for the project to impact scientifically significant paleontological resources. If such resources are encountered during ground-disturbing activities, implementation of Mitigation Measure 3.9/5.0 as identified in the Eastern Dublin EIR and listed in Section 5. Cultural Resources, which requires work stoppage in the event of discovery, would reduce any potential impacts to paleontological resources to a less-than-significant level. 126
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 90

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to the mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to paleontological resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the EDSP EIRs that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, the project would not substantially increase the severity of the previously identified geology and soils impacts, nor result in new significant impacts.

Source(s)
Barlock, Vincent Emery. 1989. Sedimentology of the Livermore Gravels (Miocene-Pleistocene), Southern Livermore Valley, California. United States Department of the Interior Geological Survey. Open-file report 89-131.

California Geological Survey. 2002. California Geomorphic Provinces. Department of Conservation, California Geological Survey Note 36.

California Geological Survey. 2021. California Earthquake Hazards Zone Application. Website:
maps.conservation.ca.gov/cgs/EQZApp/app/ (accessed April 3, 2023).

Cohen, K.M., S.C. Finney, P.L. Gibbard, and J.X. Fan. 2022. The ICS International Chronostratigraphic Chart. Updated October 2022. Episodes 36: 199-204.

Dibblee, T.W. 2006. Geologic Map of the Livermore Quadrangle, Contra Costa & Alameda Counties, California. John A. Minch, ed., Dibblee Geological Foundation Map DF-196, Map Scale 1:24,000.

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Friar Associates, Inc. 2021. Geotechnical Investigation, Proposed Auditorium Quarry Lane Preschool Facility, 6237 Tassajara Road, Dublin, California. Prepared for Quarry Lane School, December 13, 2021. Friar Associates, Inc., Project 1953-2. 127
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 91

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Howard, A.D. 1979. Geologic History of Middle California. California Natural History Guides No.

43. University of California Press, Berkeley, California. 113 pp.

Lindsay, E.H., and N.J. Czaplewski. 2011. New Rodents (Mammalia, Rodentia, Cricetidae) from the Verde Fauna of Arizona and the Maxum Fauna of California, USA, Early Blancan Land Mammal Age. Palaeontologia Electronica, 14(3), p.16.

Metropolitan Transportation Commission and Association of Bay Area Governments. 2018.

Probabilistic Earthquake Shaking Hazard Map. Website: mtc.maps.arcgis.com/apps/ webappviewer/index.html?id=4a6f3f1259df42eab29b35dfcd086fc8 (accessed June 21, 2022).

Norris, R.M., and R.W. Webb. 1976. Geology of California. John Wiley and Sons Inc., New York. 379 pp.

Society of Vertebrate Paleontology (SVP). 2010. Standard Procedures for the Assessment and Mitigation of Adverse Impacts to Paleontological Resources. SVP. Impact Mitigation Guidelines Revision Committee. 11 pp.

United States Department of Agriculture. Natural Resources Conservation Service. Web Soil Survey. Website: websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx (accessed April 3, 2023).

United States Department of Agriculture Soil Conservation Service. 1975. Soil Survey of Alameda County, Western Part. Available online at: www.nrcs.usda.gov/Internet/ FSE_MANUSCRIPTS/california/CA610/0/alameda.pdf (accessed June 21, 2022).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

128
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 92

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Greenhouse Gas Emissions

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

7. GREENHOUSE GAS EMISSIONS. Would the project:
a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the
environment?
X
b) Conflict with applicable plan, policy or regulation
adopted for the purpose of reducing the emissions of
greenhouse gases?
X
Previous CEQA Documents
Since certification of the Eastern Dublin EIR, the issue of the contribution of greenhouse gasses to climate change has become a more prominent issue of concern as evidenced by passage of Assembly Bill 32 in 2006 and Senate Bill 32 in 2016.

Because the Eastern Dublin EIR has been certified, the determination of whether greenhouse gasses and climate change need to be analyzed for this project is governed by the law on supplemental or subsequent EIRs (Public Resources Code section 21166 and CEQA Guidelines, Sections 15162 and 15163). Greenhouse gas and climate change is not required to be analyzed under those standards unless it constitutes “new information of substantial importance, which was not known and could not have been known at the time the Eastern Dublin EIR was certified as complete” (CEQA Guidelines Sec. 15162 (a) (3)).

Greenhouse gas and climate change impacts were not analyzed in the Eastern Dublin EIR; however, these impacts are not new information that was not known or could not have been known at the time this previous EIR was certified. The issue of climate change and greenhouse gasses was widely known prior to the certification of this EIR. The United Nations Framework Convention on Climate Change was established in 1992. The regulation of greenhouse gas emissions to reduce climate change impacts was extensively debated and analyzed throughout the early 1990s. The studies and analyses of this issue resulted in the adoption of the Kyoto Protocol in 1997.

Therefore, the impact of greenhouse gases on climate change was known at the time of the certification of the Eastern Dublin EIR. Under CEQA standards, it is not new information that requires analysis in a supplemental EIR or Negative Declaration. No supplemental environmental analysis of the project's impacts on this issue is required under CEQA. 129
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 93

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Project Impacts and Mitigation Measures
(a-b) Generate greenhouse gas (GHG) emissions or conflict with GHG plans or regulations As discussed above, no additional environmental analysis is required under CEQA Section 21166 and CEQA Guidelines section 15162.

Conclusion
No CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

130
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 94

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Hazards and Hazardous Materials

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

8. HAZARDS AND HAZARDOUS MATERIALS. Would the project:
a) Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
X
b) Create a significant hazard to the public or the
environment through reasonably foreseeable upset and
accident conditions involving the release of hazardous
materials into the environment?
X
c) Emit hazardous emissions or handle hazardous or
acutely hazardous materials, substances, or waste within ¼ mile of an existing or proposed school?
X
d) Be located on a site which is included on a list of
hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the environment?
X
e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two
miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area?
X
f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency
evacuation plan?
X
g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires, including where wildlands are adjacent to urbanized areas or where residences are intermixed with wildlands?
X
Environmental Setting
The site contains native and introduced tree and other vegetation species, as further described in Section 4, Biological Resources of this Initial Study. The site has historically been used as a landscape contracting business with outdoor storage and contains one single-family home and associated outbuildings. Building materials and similar equipment are currently stored on the site. The project site has a gradual slope to the south toward an unnamed tributary. A six-foot 131
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 95

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
chain link fence with a four-foot-tall sheet metal barrier at the base has been installed along the southern property line to provide a wildlife barrier between the project site and adjacent tributary.

Surrounding land uses include Quarry Lane School to the north. To the east of the project site are open space lands that are part of the Northern Drainage Conservation Area (NDCA).

Immediately south of the project site is the unnamed tributary of Tassajara Creek. Single-family residential development and undeveloped open space are located further to the south.

Tassajara Road is located immediately to the west of the project site.

Previous CEQA Documents
The Eastern Dublin EIR did not include a discussion of hazards and hazardous materials as an identified environmental topic area as it was not determined to be an environmental issue of concern; however, the Eastern Dublin EIR did discuss the potential for hazardous materials releases as part of the analysis of solid waste disposal and fire protection. Mitigation measures identified for solid waste disposal are included in Section 18, Utilities and Service Systems of this Initial Study. The Eastern Dublin EIR did identify potentially significant impacts related to wildfire and fire hazards. Mitigation measures identified for wildfire and fire hazards are included in Section 19, Wildfire of this Initial Study.

Because the Eastern Dublin EIR has been certified, the determination of whether impacts related to hazards or hazardous materials need to be analyzed for this project is governed by the law on supplemental or subsequent EIRs (Public Resources Code section 21166 and CEQA Guidelines, Sections 15162 and 15163). Hazardous materials are not required to be analyzed under those standards unless it constitutes “new information of substantial importance, which was not known and could not have been known at the time the Eastern Dublin EIR was certified as complete” (CEQA Guidelines Sec. 15162 (a) (3)).

Hazardous materials impacts were not analyzed in the Eastern Dublin EIR; however, these impacts are not new information that was not known or could not have been known at the time this previous EIR was certified. The issue of hazards and hazardous materials was widely known prior to the certification of this EIR.

Therefore, the impact of hazardous materials was known at the time of the certification of the Eastern Dublin EIR. Under CEQA standards, it is not new information that requires analysis in a supplemental EIR or Negative Declaration. No supplemental environmental analysis of the project's impacts on this issue is required under CEQA.

Project Impacts and Mitigation Measures
(a-d) Exposure to hazardous materials, upset/accident, near school, hazardous materials list As discussed above, no additional environmental analysis is required under CEQA Section 21166 and CEQA Guidelines section 15162.
132
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 96

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
(e) Proximity to a public airport
No New Impact. The project site is not located within an airport land use plan, or within two miles of a public airport or public use airport. The project site is located approximately 3.14- mile northwest of the Livermore Municipal Airport. The proposed project would not be an incompatible land use, would not add structures of a height such that it would create a hazard or obstruction, and would not result in the addition of a characteristic that would create a hazard to air navigation.

The proposed project would construct a performing arts complex to serve the existing Quarry Lane School, along Tassajara Road. It is not located along an identified evacuation route, nor would it affect local roadways. The proposed project would not interfere with an adopted emergency response plan or emergency evacuation plan. Because the proposed project would not substantially alter or block the adjacent roadways, the proposed project would not be expected to impair the function of nearby emergency evacuation routes, including Tassajara Road.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
located within a moderate Fire Hazard Severity Zone within a State Responsibility Area (SRA), as mapped by the California Department of Forestry and Fire Protection (CAL FIRE).

The proposed project would be constructed in accordance with the requirements of the CBC, California Fire Code, and the City’s Wildfire Management Plan. In addition, consistent with the City’s entitlement process and Mitigation Measure 3.5/9.0 (discussed below in Section 18.

Wildfire ) in the Eastern Dublin EIR, project plans would be reviewed by the Alameda County Fire Department to ensure that required fire protection elements are incorporated into final building plans, including provision of adequate water supply and pressure, and use of appropriate landscape and building materials.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to hazards and hazardous materials beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
CAL FIRE. 2020. California Fire Hazard Severity Zone Viewer. Website: egis.fire.ca.gov/FHSZ/ (accessed June 25, 2021).

Dublin, City of. 2010. City of Dublin Wildfire Management Plan, Adopted July 9, 1996, Revised March 5, 2002 and November 2, 2010.

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.
134
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 98

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Hydrology and Water Quality

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

9. HYDROLOGY AND WATER QUALITY. Would the project:
a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or groundwater quality?
X
b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the
project may impede sustainable groundwater
management of the basin?
X
c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the
course of a stream or river or through the addition of
impervious surfaces, in a manner which would:

X
(i). Result in substantial erosion or siltation on- or off- site;
X
(ii). Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on-
or offsite;
X
(iii). Create or contribute runoff water which would
exceed the capacity of existing or planned stormwater
drainage systems or provide substantial additional
sources of polluted runoff; or
X
(iv). Impede or redirect flood flows? X
d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
X
e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater
management plan?
X
Environmental Setting
The project site is located within the Alameda Creek watershed which drains to the San Francisco Bay. The 660-square-mile Alameda Creek watershed is the largest watershed in the Bay Area, extending from Mount Hamilton north to Mount Diablo, east to the Altamont Hills and west to San Francisco Bay. The project site is located within the jurisdiction of Zone 7 of the Alameda County Flood Control and Water Conservation District (Zone 7). 135
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 99

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
The project site is located within the San Francisco Bay Hydrologic Region. The San Francisco Bay RWQCB Basin Plan identifies the Project as being within the Livermore Valley groundwater basin (Basin ID 2-10). As defined in DWR Bulletin 118 Update 2003 (California’s Groundwater), the Livermore Valley Groundwater Basin (DWR Basin 2-10) extends from the Pleasanton Ridge east to the Altamont Hills and from the Livermore Uplands north to the Tassajara Uplands.

According to the Geotechnical Investigation prepared for the proposed project, groundwater was not encountered in any of the exploratory holes, which extended to a maximum depth of

20.5 feet below the existing ground surface.

As described in Section 4, Biological Resources, a tributary to Tassajara Creek and its associated riparian woodland is located to the south of the project site. The riparian woodland and tributary are part of the Northern Drainage Conservation Area (NDCA) and are separated from the project site by an existing 6-foot-high chain link fence with a 3.5-foot-high sheet metal barrier along its base that was constructed along the southern site boundary. A potentially jurisdictional seasonal wetland was also observed just east of the site.

Based on the Flood Insurance Rate Map (FIRM) published by the Federal Emergency Management Agency (FEMA) [06001C0326G, dated August 3, 2009], the project site is located in an area of minimal flood hazard.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to the overdraft of potential flooding, reduced groundwater recharge, and non-point sources of pollution.

Mitigation measures were identified to reduce potential impacts to a less-than-significant level.

The following mitigation measures would apply to the proposed project:

MM 3.5/44.0 Require drainage facilities that will minimize any increased potential or erosion or flooding.

MM 3.5/45.0 Require channel improvements consisting of natural creek bottoms and side slopes with natural vegetation where possible to meet Policy 9.7 above.

MM 3.5/46.0 Storm Drainage Master Plan. Require a Master Drainage Plan be prepared for each development application prior to development approval. The plan shall include:
 Hydrologic studies of entire related upstream watersheds.  Phase approach and system modeling.
 Documentation of existing conditions.
 Design-level analysis of the impacts of proposed development of the existing creek channels and watershed areas.
136
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 100

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Detailed analysis of effects of development on water quality of surface runoff.  Detailed drainage design plans for each phase of the proposed project.  Design features to minimize runoff flows within existing creeks/channels in order to alleviate potential erosion impacts and maintain riparian vegetation.

MM 3.5/47.0 Flood Control. Require development in the Planning Area to provide facilities to alleviate potential downstream flooding due to project development. These facilities shall include:
 Retention/detention facilities as appropriate to control peak runoff discharge rates.
 Energy dissipators at discharge locations to prevent channel erosion, as per Zone 7 guidelines. Energy dissipators should be designed to minimize adverse effects on biological resources and the visual environment; in particular, widespread use of riprap should be avoided.

MM 3.5/49.0 Plan facilities and select management practices in the Eastern Dublin Specific Plan EIR area that protect and enhance water quality.

MM 3.5/50.0 Zone 7 supports ongoing groundwater recharge program from the Central Basin.

MM 3.5/51.0 Develop community-based programs to educate local residents and businesses on methods to reduce non-point sources of pollution. Coordinate such programs with current Alameda County programs. Such programs include:
 Increased availability of liquid recycling centers (i.e., oil, greases, etc.) to reduce potential for dumping into storm drains.
 Programs that educate the public that catch basins and storm drains flow to creeks, to potable groundwater basins, and to the San Francisco Bay, including a potential program to paint labels at each catch basin and storm drain to alert people to these facts.

Project Impacts and Mitigation Measures
(a) Violate water quality or waste discharge requirements or degrade surface or groundwater quality
No New Impact. Construction activities associated with the proposed project would cause disturbance of soil during excavation work, which could adversely impact water quality.

Contaminants from construction vehicles and equipment and sediment from soil erosion could increase the pollutant load in runoff being transported to receiving water during development.

Although surface runoff from the site would likely decrease with the proposed project (due to proposed stormwater treatment measures), runoff from the proposed landscaped areas may contain residual pesticides and nutrients (associated with landscaping) and sediment and trace 137
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 101

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
metals (associated with atmospheric deposition) during operation of the project.

Implementation of mitigation measures Mitigation Measure 3.6/27.0 and Mitigation Measure

3.6/28.0, as described in Section 6, Geology and Soils, would ensure that potential water quality impacts associated with project construction are reduced to a less-than-significant level. The project would be required to comply with these mitigation measures.

In addition, because the project would result in the disturbance of greater than one acre of soil, project implementation is required to comply with the Construction General Permit, which requires preparation of a SWPPP and implementation of BMPs to reduce the discharge of construction-related stormwater pollutants. A SWPPP must include a detailed description of controls to reduce pollutants and outline maintenance and inspection procedures. Typical sediment and erosion BMPs include protecting storm drain inlets, establishing and maintaining construction exits and perimeter controls to avoid tracking sediment off-site onto adjacent roadways. A SWPPP also defines proper building material staging and storage areas, paint and concrete washout areas, describes proper equipment/vehicle fueling and maintenance practices, measures to control equipment/vehicle washing and allowable non-stormwater discharges, and includes a spill prevention and response plan. Compliance with the requirements of the Construction General Permit and implementation of mitigation measures Mitigation Measure 3.6/27.0 and Mitigation Measure 3.6/28.0 ensure that the proposed project would result in less-than-significant impacts to water quality during construction.

Although the site is partially developed, the proposed project would increase the total amount of impervious surface on the project site. The increase in impervious surface could result in increased stormwater runoff (both flow rate and volume) from the project site relative to pre- project conditions, which may result in hydromodification impacts (i.e., increased potential for erosion of creek beds and banks, silt pollution generation, or other adverse impacts on beneficial uses due to increased erosive force). Hydromodification is the alteration of the natural flow of water through a landscape, and often takes the form of creek channel erosion.

Hydromodification is one of the leading sources of impairment in streams, lakes, and estuaries.

The proposed project is subject to the conditions of the Municipal Regional Permit (MRP) (Order No. R2-2022-0018 NPDES Permit No. CAS612008). The C.3 Stormwater Technical Guidance updated in February 2021 as per the Alameda County Clean Water Program, outlines low impact development (LID) provisions that the MRP permit holders can use during planning of development activities to manage and reduce occurrences of stormwater runoff pollutant discharges. These low impact development methods aim to preserve existing natural landscapes to minimize imperviousness and water quality impacts.

The proposed project would be considered a “regulated project” under the MRP. Provision C.3 of the MRP requires new development and redevelopment projects that would replace more than 5,000 square feet of existing impervious surfaces to include post-construction stormwater control in project designs, including measures for site design, source control, runoff reduction, stormwater treatment, and baseline hydromodification management. Under the C.3 requirements, the preparation and submittal of a Stormwater Control Plan (SCP) would be 138
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 102

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
required for the project site. The purpose of a SCP is to detail the design elements and implementation measures necessary to meet the post-construction stormwater control requirements of the MRP. In particular, SCPs must include LID design measures, which reduce water quality impacts by preserving and recreating natural landscape features, minimizing imperviousness, and using stormwater as a resource, rather than a waste product. The proposed project would also be required to prepare a Stormwater Facility Operation and Maintenance Plan to ensure that stormwater control measures are inspected, maintained, and funded for the life of the project. Compliance with the C.3 requirements of the MRP would ensure that operation-period impacts to water quality would be less than significant.

As outlined in the project description, the proposed project would include approximately 3,460 square feet of bioretention area on the project site that would be used for stormwater quality control. The proposed project would include approximately 18 bioretention basins and storm drains throughout the project site, which would connect to the existing stormdrain pipeline in Tassajara Road.

In addition, Mitigation Measure 3.5/46.0, identified in the Eastern Dublin EIR, which requires preparation of a storm drainage plan for the proposed project, would ensure that potential impacts associated with stormwater runoff would be reduced to a less-than-significant level.

The proposed project would connect to the existing water lines within the vicinity of the project site and would not require the use of groundwater. Due to the depth of groundwater and the shallow excavations required for project construction, dewatering is not anticipated during construction activities.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
EIR, there would be no new impacts to groundwater supplies beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (c) Substantially alter existing drainage patterns re: erosion/siltation, re: flooding, or degrade water quality
No New Impact. The proposed project would create new landscaped areas and impermeable pavement surfaces, which would alter the existing drainage pattern of the project site.

However, as discussed above, the proposed project would be required to comply with the C.3 requirements of the MRP, standard City development requirements related to stormwater, and mitigation measures identified in the Eastern Dublin EIR, including Mitigation Measure

3.5/47.0, which requires preparation of a flood control plan for the proposed project.

As noted in Section 8.b and 9.a, the proposed project would be required to prepare a SWPPP as required by the Construction General Permit and consistent with Mitigation Measure 3.6/27.0 and Mitigation Measure 3.6/28.0, identified in the Eastern Dublin EIR, to reduce short- and long-term erosion and sedimentation associated with project construction and operation.

Required compliance with applicable regulations, implementation of City policies, and the mitigation measures identified in the Eastern Dublin EIR, would reduce potential impacts of the project related to changes in drainage patterns to a less-than-significant level by requiring preparation and implementation of a SWPPP during project construction, compliance with the C.3 requirements of the MRP to manage stormwater during project operation, and preparation of a flood control plan.

Additionally, the proposed project would implement various design features to ensure contaminants would be contained.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
EIR, there would be no new impacts related to flood hazard, seiche or tsunami beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (e) Water Quality
No New Impact. The Water Quality Control Plan for the San Francisco Bay Basin (Basin Plan)31 is the master policy document that establishes the water quality objectives and strategies needed to protect designated beneficial water uses in the San Francisco Bay region. The State Water Board and the Regional Water Board enforce compliance with the water quality objectives of the Basin Plan through the issuance of NPDES permits. As noted above, the proposed project would implement various design features to ensure the proposed project would have a less- than-significant impact related to water quality, including multiple bioretention basins and storm drains throughout the site that would retain and clean stormwater on-site before discharging it into the municipal stormwater system, consistent with Provision C.3 of the MRP, with which all projects in the City of Dublin must comply.

The project site is not located within a mapped Division of Water Rights groundwater basin boundary. Therefore, the proposed project would not interfere with groundwater recharge in the vicinity of the project site. The proposed project would not conflict with or obstruct the implementation of a sustainable groundwater management plan.

Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to hydrology and water quality beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

31 California Regional Water Quality Control Board San Francisco Bay Region. 2017. Water Quality Control Plan for the San Francisco Bay Basin. May 4.
141
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 105

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Source(s)
California, State of. 2019. California Official Tsunami Inundation Maps. Website:
www.conservation.ca.gov/cgs/tsunami/maps (accessed June 21, 2022).

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Dublin, City of. 2002. Final Revised Supplemental Environmental Impact Report, State Clearinghouse No. 2001052114, East Dublin Properties Stage 1 Development Plan and Annexation. March.

Federal Emergency Management Agency. 2021. FEMA Flood Map Service Center (map).

Website:
https://msc.fema.gov/portal/search?AddressQuery=1881%20Collier%20Canyon%20Roa d%2C%20Dublin%2C%20CA#searchresultsanchor (accessed June 21, 2022).

Haag, Jerry. 2005. Fallon Village Project, Final Supplemental Environmental Impact Report, State Clearinghouse No. 2005062010. November.

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

142
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 106

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Land Use and Planning

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

10. LAND USE AND PLANNING. Would the project:
a) Physically divide an established community? X
b) Cause a significant environmental impact due to a
conflict with any applicable land use plan, policy, or
regulation adopted for the purpose of avoiding or
mitigating an environmental effect?
X
Environmental Setting
The project site consists of an approximately 12-acre property that currently contains the existing private K-12 Quarry Lane School in the north and the proposed area for the performing arts complex in the south. The proposed expansion area has historically been used as a landscape contracting business with outdoor storage and contains one single-family home and associated outbuildings. Building materials and similar equipment are currently stored on the site. Surrounding land uses include residential development to the north; to the east of the project site are open spaces that are part of the NDCA. Immediately south of the project site is an unnamed tributary of Tassajara Creek. Single-family residential development and undeveloped open space are located further to the south. Tassajara Road is located immediately to the west of the project site.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified less than significant impacts related to the substantial alteration to existing land use, on-site project land use conflicts, conversion of non-urban lands, potential conflicts with land uses to the south, east and north. A potentially significant impact was identified related to potential conflicts with land uses to the west, which was determined to be less than significant with implementation of Mitigation Measure 3.1/1.0, which requires the City to coordinate with the U.S. Army regarding future development proposals in the vicinity of the U.S. Army’s Parks Reserve Forces Training Area (Camp Parks RFTA). This mitigation measure does not apply to the proposed project.

Project Impacts and Mitigation Measures
(a) Physically divide an established community
No New Impact. The physical division of an established community typically refers to the construction of a feature (such as an interstate highway or railroad tracks) or removal of a 143
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 107

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
means of access (such as a local road or bridge) that would impair mobility within an existing community, or between a community and outlying areas.

The proposed project would involve the demolition of the existing structures on the project site and development of a new auditorium and associated parking lot directly south of the existing Quarry Lane School. Access to the project site would be via a new right-in driveway from Tassajara Road at the southern end of the project site, with a connection to the existing school parking lot, which has a signalized entry and exit to Tassajara Road. The proposed project would not result in the realignment or closure of any existing roads. Therefore, the proposed project would not result in the physical division of an established community or adversely affect the continuity of land uses in the vicinity. No new significant or substantially more severe significant impacts would occur.
(b) Conflict with land use plan, policy, or regulation
No New Impact. The proposed project would involve the demolition of the existing structures on the site and development of a new performing arts center and associated parking lot to serve the existing Quarry Lane School. The new facility would provide space to host the Quarry Lane School’s existing performance art shows and events, as well as an improved space for high school commencement ceremonies.

As outlined in the project description, the project proposes a Conditional Use Permit to approve a minor amendment to the Stage 1 and Stage 2 Development Plan for the Community Facility use. The City of Dublin Planning Commission may approve minor amendments to an adopted Development Plan upon a finding that the amendment substantially complies with and does not materially change the provisions or intent of the adopted Planned Development Zoning District Ordinance for the site. As part of the project entitlements, the City may grant a Conditional Use Permit to allow for the proposed use. In addition, the proposed performing arts center would be compatible with the mix and intensity of uses located within the vicinity of the site, which generally consist of residential and open spaces, as well as the existing school.

Therefore, the proposed project would not conflict with any applicable land use plans, policies, or regulations.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to land use and planning beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to 144
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 108

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
applicable regulatory requirements, there would be no new impacts to land use and planning beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

145
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 109

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Mineral Resources

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

11. MINERAL RESOURCES. Would the project:
a) Result in the loss of availability of a known mineral resource that would be of value to the region and the
residents of the state?
X
b) Result in the loss of availability of a locally-important mineral resource recovery site delineated on a local
general plan, specific plan, or other land use plan?
X
Environmental Setting
Minerals are any naturally occurring chemical element or compound, or groups of elements and compounds, formed from inorganic processes and organic substances including, but not limited to, coal, peat, and oil-bearing rock, but excluding geothermal resources, natural gas, and petroleum. Rock, sand, gravel, and earth are also considered minerals by the Department of Conservation when extracted by surface mining operations.

Neither the State Geologist nor the California Department of Mines and Geology (CDMG) have classified any areas in the City as containing mineral deposits that are either of Statewide significance or the significance of which requires further evaluation.

Previous CEQA Documents
The Eastern Dublin EIR does not indicate that significant mineral resource deposits exist on the project site. Therefore, no impacts related to mineral resources were identified.

Project Impacts and Mitigation Measures
(a-b) Loss of known or identified mineral resources
No New Impact. The project site does not have any mineral extraction areas so there would be no new or substantially more severe impacts to mineral resources. The proposed project would not result in the loss of available of a known mineral resource that would be of value of the region and residents of the state or the loss of availability of any known locally important mineral resource recovery site. No new impact or increase in the severity of the impact would occur.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts to mineral resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

147
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 111

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Noise

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

12. NOISE. Would the project result in:
a) Generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance or applicable standards of other agencies?
X
b) Generation of excessive ground borne vibration or
ground borne noise levels?
X
c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public
airport or public use airport, would the project expose people residing or working in the project area to
excessive noise levels?
X
Environmental Setting
Noise is usually defined as unwanted sound. Noise consists of any sound that may produce physiological or psychological damage and/or interfere with communication, work, rest, recreation, or sleep. Several noise measurement scales exist that are used to describe noise in a particular location. A decibel (dB) is a unit of measurement that indicates the relative intensity of a sound. Sound levels in dB are calculated on a logarithmic basis. An increase of 10 dB represents a 10-fold increase in acoustic energy, while 20 dB is 100 times more intense and 30 dB is 1,000 times more intense. Each 10 dB increase in sound level is perceived as approximately a doubling of loudness; and similarly, each 10 dB decrease in sound level is perceived as half as loud. Sound intensity is normally measured through the A-weighted sound level (dBA). This scale gives greater weight to the frequencies of sound to which the human ear is most sensitive. The A-weighted sound level is the basis for 24-hour sound measurements that better represent human sensitivity to sound at night.

As noise spreads from a source, it loses energy so that the farther away the noise receiver is from the noise source, the lower the perceived noise level would be. Geometric spreading causes the sound level to attenuate or be reduced, resulting in a 6 dB reduction in the noise level for each doubling of distance from a single point source of noise to the noise sensitive receptor of concern.

Vibration refers to ground-borne noise and perceptible motion. Ground-borne vibration is almost exclusively a concern inside buildings and is rarely perceived as a problem where the motion may be discernible, but there is less adverse reaction without the effects associated 148
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 112

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
with the shaking of a building. Vibration energy propagates from a source through intervening soil and rock layers to the foundations of nearby buildings. The vibration then propagates from the foundation throughout the remainder of the structure. Building vibration may be perceived by occupants as motion of building surfaces, the rattling of items on shelves or hanging on walls, or a low-frequency rumbling noise, otherwise referred to as ground-borne noise.

Typically, sources that have the potential to generate ground-borne noise are likely to produce airborne noise impacts that mask the radiated ground-borne noise. The rumbling noise is caused by the vibrating walls, floors, and ceilings radiating sound waves. Annoyance from vibration often occurs when the vibration exceeds the threshold of perception by 10 dB or less.

This is an order of magnitude below the damage threshold for normal buildings.

Typical sources of ground-borne vibration are construction activities (e.g., blasting, pile driving, and operating heavy-duty earthmoving equipment) and occasional traffic on rough roads.

Problems with ground-borne vibration and noise from these sources are usually localized to areas within approximately 100 feet of the vibration source, although there are examples of ground-borne vibration causing interference out to distances greater than 200 feet. When roadways are smooth, vibration from traffic, even heavy trucks, is rarely perceptible. For most projects, it is assumed that the roadway surface will be smooth enough that ground-borne vibration from street traffic will not exceed the impact criteria; however, construction of the project could result in ground-borne vibration that could be perceptible and annoying.

Existing Noise Levels
Major sources of noise on and adjacent to the project site include noise generated by vehicles on Tassajara Road, aircraft flyovers (most likely private aircraft originating from Livermore Municipal Airport), and children playing at the Quarry Lane School. The existing noise conditions are based on baseline noise conditions identified in the 2016 Environmental Noise Impact Study for 6237 Tassajara Road, prepared by RGD Acoustics. 32 Based on the results, the
Community Noise Equivalent Level (CNEL) ranges between 46 dBA and 68 dBA at the project site. Table G shows the results of the noise measurements.

32 RGD Acoustics. 2016. Environmental Noise Impact Study for 6237 Tassajara Road, Dublin, CA. March 10. 149
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 113

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table G: Ambient Noise Measurement Results (RGD Acoustics 2016) Location Date/Time
A-Weighted Noise Level, dBA
Leq Lmax L10 L50 L90 CNEL
ST-1: Near northeastern corner
of the project site boundary at 5
ft height above ground.
16 October 2014
11:45 – 12:00 p.m. 49 64 59 47 36 46**
ST-1: Near northeastern corner
of the project site boundary at
24 ft height above ground.
18 October 2014
11:30 – 1:00 p.m. 55 72 65 49 37 52**
ST-2: Near western edge of
project site boundary at 5 ft
above ground close to Tassajara
Road
16 October 2014
12:15 – 12:30 p.m. 69 87 80 63 50 68*
ST-3: Near northern edge of
project site boundary at 5 ft
above ground closest to Quarry
Lane School parking lot.
16 October 2014
12:35 – 1:50 p.m. 57 65 62 56 52 54**
Source: RGD Acoustics. 2016. Environmental Noise Impact Study for 6237 Tassajara Road, Dublin, CA. March 10 CNEL = Community Noise Equivalent Level
Leq = Equivalent Continuous Noise Level
* CNEL based on correlation with simultaneous measurement at long-term measurement location. ** CNEL due to children playing is calculated assuming the activity continues from 7 a.m. to 7 p.m.

Surrounding Noise Sensitive Land Uses
Certain land uses are considered more sensitive to noise than others. Examples of these include residential areas, educational facilities, hospitals, childcare facilities, and senior housing. The nearest noise sensitive uses are the Quarry Lane School which is north and adjacent to the site, and single-family residential buildings approximately 150 feet south of the project site boundary.

Local Regulations
City of Dublin General Plan. The Noise Element of the City of Dublin General Plan establishes residential, commercial, and industrial land use compatibility standards for noise measured at the property line of the receiving land use. The land use compatibility noise criteria, as shown in Table H, provide the basis for decisions on location of land uses in relation to noise sources and for determining noise mitigation requirements.

The Noise Element of the Dublin General Plan identifies "normally acceptable" noise levels for all schools, churches and nursing home uses as 60 dBA CNEL or less. Noise levels from 61-70 CNEL are considered “conditionally acceptable”, while noise levels between 71-80 CNEL are considered “normally unacceptable.” Noise levels over 80 dBA CNEL are considered clearly unacceptable for new development of these types of land uses. 150
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 114

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table H: City of Dublin Land Use/Noise Compatibility Standards (dBA CNEL) Land Use Category Normally
Acceptable
Conditionally
Acceptable
1 Normally
Unacceptable
Clearly
Unacceptable

Residential 60 or less 61-70 71-75 Over 75
Motels, hotels 60 or less 61-70 71-80 Over 80
Schools, churches, nursing homes 60 or less 61-70 71-80 Over 80 Neighborhood parks 60 or less 61-65 66-70 Over 70
Offices: retail commercial 70 or less 71-75 76-80 Over 80 Industrial 70 or less 71-75 Over 75 -
Source: Dublin General Plan Noise Element, Table 9-1, 2012 CNEL = Community Noise Equivalent Level
1 Conditionally acceptable exposure requires noise insulation features in building design. Conventional construction, but with closed windows and fresh air supply systems or air conditioning will normally suffice.

Eastern Dublin Specific Plan. As described in Section 6.4.2 of the EDSP, the primary source of noise in eastern Dublin is traffic along I-580. The 60 dB contour for noise levels, which is considered the maximum normally acceptable level of residential uses and other sensitive uses extends approximately 2,000 feet north of the freeway. As specified in Policy 6-44, development along the I-580 frontage will be required to provide adequate mitigation to conform to the State Land Use Compatibility Standards for noise and policies and standards in the City of Dublin's Noise Element.

City of Dublin Municipal Code. The City of Dublin Municipal Code (Section 5.28.020) prohibits any person within the City from making any loud, or disturbing, or unnecessary, or unusual or habitual noise or any noise which annoys or disturbs or injures or endangers the health, repose, peace, or safety of any reasonable person of normal sensitivity present in the area.

Section 8.36.060(C)(3) states that for lots 5,000 square feet or larger, mechanical equipment that generates noise when located within a required setback as allowed by this subsection, and within 10 feet of an existing or potential residence, or an existing paved patio area on adjoining property, shall be enclosed as necessary to reduce noise at the property line to a maximum of 50 dBA at any time.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified that impacts related to the exposure of existing and proposed development to airport noise would be less than significant. The Eastern Dublin EIR also found that impacts related to exposure of proposed housing to future roadway noise, exposure of existing and proposed residences to construction noise, and noise conflicts due to the adjacency of diverse land uses permitted by plan policies supporting mixed-use development would be less than significant with implementation of mitigation measures identified in the 151
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 115

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Eastern Dublin EIR. In addition, the Eastern Dublin EIR identified that impacts associated with exposure of existing residences to future roadway noise and exposure of proposed residential development to noise from future military training activities at Camp Parks RFTA and the County jail would be significant and unavoidable. The following mitigation measures would apply to the proposed project:

MM 3.10/2.0 Require that development projects provide for noise barriers or berms near existing residences to control noise in outdoor use spaces. One possibility is the construction of solid fences around outdoor use areas. The noise control for existing residences should be evaluated on a case-by-case basis.

MM 3.10/3.0 Require an acoustical study prior to future development in the Tassajara Foothill Residential, Tassajara Village Center, County Center, and Hacienda Gateway sub-area to determine if future noise impact from Parks RFT A or the County jail will be within acceptable limits. The goal of the study will be to identify all potential noise- generating operations and determine if future noise levels will exceed the acceptable levels as defined by the City and Army.

MM 3.10/4.0 Developers shall submit to the City a Construction Noise Management Program that identifies measures to be taken to minimize impacts on existing planning area residents. The program will include a schedule for grading and other major noise- generating activities that will limit these activities to the shortest possible number of days. Hours of construction activities shall be limited in keeping with Dublin ordinances.

The Program for construction vehicle access to the site shall minimize construction truck traffic through residential areas. If construction traffic must travel through residential areas, then a mitigation plan should be developed. The Program may include barriers, berms, or restrictions on hours.

MM 3.10/5.0 In order to minimize the impact of construction noise, all operations should comply with local noise standards relating to construction activities. When construction occurs near residential areas, then it should be limited to normal daytime hours to minimize the impact. Stationary equipment should be adequately muffled and located as far away from sensitive receptors as possible.

MM 3.10/6.0 Noise management plans shall be prepared and reviewed as part of development application for all mixed-use projects in which residential units would be combined with commercial, office, or other urban non-residential uses. The objective of the noise management plan would be to provide a high-quality acoustic environment for residents and nonresidential tenants/ owners by taking steps to minimize or avoid potential noise problems. The plan would be prepared by a qualified acoustical consultant. The plan would take into account the concerns of residents, nonresidential tenants/ owners, and maintenance personnel. The plan should be prepared at an early stage of the design process. Ideally, the acoustical consultant should provide input to 152
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 116

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
the architect at a preliminary site plan stage, to make maximum use of detailed site planning to avoid noise conflicts.

Project Impacts and Mitigation Measures
(a) Generate noise exceeding standards
No New Impact. The short-term construction and long-term noise impacts associated with the proposed project are described below.

Short-Term Construction Noise Impacts. Project construction would result in short-term noise impacts on the nearby sensitive receptors. Maximum construction noise would be short-term, generally intermittent depending on the construction phase, and variable depending on receiver distance from the active construction zone. The duration of noise impacts generally would be from one day to several days depending on the phase of construction. The level and types of noise impacts that would occur during construction are described below.

Table I lists typical construction equipment noise levels (L max) recommended for noise impact
assessments, based on a distance of 50 feet between the equipment and a noise receptor, obtained from the Federal Highway Administration (FHWA) Roadway Construction Noise Model. Construction-related short-term noise levels would be higher than existing ambient noise levels currently in the project area but would no longer occur once construction of the project is completed.

Two types of short-term noise impacts could occur during construction of the proposed project.

The first type involves construction crew commutes and the transport of construction equipment and materials to the site, which would incrementally increase noise levels on roads leading to the site. As shown in Table I, there would be a relatively high single-event noise exposure potential at a maximum level of 84 dBA L
max with trucks passing at 50 feet.

The second type of short-term noise impact is related to noise generated during site preparation and the construction of the proposed project. According to the construction schedule, the phases of construction include: (1) demolition; (2) site preparation; (3) grading; (4) building construction; (5) paving; and (6) architectural coating. Construction of the proposed project is anticipated to begin in fall of 2023 and be completed by fall of 2024.

Construction would be undertaken in discrete steps, each of which would have its own mix of equipment, and consequently its own noise characteristics. These various sequential phases would change the character of the noise generated on the project site. Therefore, the noise levels would vary as construction progresses. Despite the variety in the type and size of construction equipment, similarities in the dominant noise sources and patterns of operation allow construction-related noise ranges to be categorized by work phase.

Table I lists the maximum noise levels from the Highway Construction Noise Handbook recommended for noise impact assessments for the loudest anticipated construction that would be used for the project based on a distance of 50 feet between the equipment and a 153
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 117

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
noise receptor. Typical operating cycles for these types of construction equipment may involve one to two minutes of full power operation followed by three to four minutes at lower power settings.

Table I: Typical Maximum Construction Equipment Noise Levels (Lmax) Type of Equipment Acoustical
Usage Factor
Suggested Maximum Sound Levels
for Analysis (dBA Lmax at 50 ft)
Air Compressor 40 80
Backhoe 40 80
Crane 16 85
Dozers 40 85
Excavator 40 85
Forklift 20 85
Generator 50 80
Grader 40 85
Loader 40 80
Paver 50 85
Roller 20 85
Scraper 40 85
Skid Steer Loader 40 80
Tractor 40 84
Trencher 50 82
Water Truck 40 84
Source: Highway Construction Noise Handbook (FHWA 2006). dBA = A-weighted decibel
FHWA = Federal Highway Administration
ft = foot/feet
HP = horsepower
Lmax = maximum noise level

Each piece of construction equipment operates as an individual point source. Utilizing the following equation, a composite noise level can be calculated when multiple sources of noise operate simultaneously:

𝐿𝐿𝐿𝐿𝐿𝐿 (𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝐿𝐿) = 10 ∗ log
10 �� 10
𝐿𝐿𝐿𝐿
10 𝐿𝐿
1 �
Table J shows the composite noise levels of the two loudest pieces of equipment for each construction phase, at a distance of 50 feet from the construction area.

Once composite noise levels are calculated, reference noise levels can then be adjusted for distance using the following equation:

𝐿𝐿𝐿𝐿𝐿𝐿 (𝑎𝑎𝑐𝑐 𝑑𝑑𝑐𝑐𝑐𝑐𝑐𝑐𝑎𝑎𝑑𝑑𝑐𝑐𝐿𝐿 𝑋𝑋) = 𝐿𝐿𝐿𝐿𝐿𝐿 (𝑎𝑎𝑐𝑐 50 𝑓𝑓𝐿𝐿𝐿𝐿𝑐𝑐) − 20 ∗ lo g 10 � 𝑋𝑋
50�
In general, this equation shows that doubling the distance would decrease noise levels by 6 dBA while halving the distance would increase noise levels by 6 dBA.

154
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 118

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table J: Equipment Noise by Construction Phase
Construction Phase Loudest Equipment Composite Noise Level at (dBA Leq at 50 ft)
Demolition
Concrete Saw
88 Dozer
Tractor
Site Preparation
Grader
85 Dozer
Tractor
Grading
Grader
86 Dozer
Tractor
Building Construction
Crane
83 Forklift
Generator
Tractor
Welder
Paving
Paver
85 Paving Equipment
Roller
Architectural Coating Air Compressor 74
Sources: Compiled by LSA Associates, Inc. (2023). Construction Noise Handbook (FHWA 2006). dBA = A-weighted decibel
FHWA = Federal Highway Administration
ft = foot/feet
Lmax = maximum noise level

Based on the typical construction equipment noise levels shown in Table J, noise levels associated with these pieces of construction equipment operating simultaneously would be approximately 88 dBA Leq at 50 feet during the demolition phase.

The closest sensitive receptors to the project site include the Quarry Lane School located approximately 100 feet north from the center of project site and the residences located approximately 450 feet south from the center of project site. Noise levels were calculated from the center of site as an average distance of where construction activities would occur, resulting in short-term noise levels of approximately 81 dBA L
eq at the Quarry Lane School and 68 dBA Leq
at the residences.

Construction equipment would operate at various locations throughout project site and construction activities at any one receptor location would occur for a limited duration. While construction-related, short-term noise levels have the potential to be higher than existing ambient noise levels in the project area, the noise impacts would no longer occur once project construction is completed.

As compared to the Eastern Dublin EIR, the proposed project would generate similar noise levels during construction and would implement the previously required mitigation measures, 155
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 119

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Mitigation Measures 3.10/4.0 and 3.10/5.0, identified above, to reduce construction related impacts to a less-than-significant level. With implementation of these mitigation measures, which require preparation and implementation of a Construction Noise Management Program that includes limiting major noise-generative activities, compliance with Dublin ordinances, and compliance with local noise standards relating to construction activities, the proposed project would not result in any new or more severe impacts compared to those identified in the Eastern Dublin EIR.

Long-Term Off-Site Traffic Noise Impacts. The Eastern Dublin EIR identified the sources of major noise affecting the EDSP area to be vehicular traffic stemming from I-580. The proposed project is not expected to generate any additional traffic. The Eastern Dublin EIR identified a potentially significant impact for future roadway noise as a result of the build out of the EDSP, which includes the proposed project. Implementation of the mitigation measures identified within the Eastern Dublin EIR would reduce these impacts to a less-than-significant level.

Long-Term Off-Site Operation-Related Noise Impacts. Noise impacts associated with the long- term operation of the project must comply with the noise standards specified in the City’s Municipal Code, which sets a 50 dBA L
eq standard for residential land uses. Stationary noise generated by the proposed project include heating, ventilation, and air conditioning (HVAC) equipment, and parking lot activities.

Parking Lot Activities. Typical parking lot activities, such as people conversing or doors slamming, would generate noise levels of approximately 60 dBA to 70 dBA Lmax at 50 feet, based on measurements previously conducted by LSA.

The closest off-site sensitive receptors to the project site include the residence located approximately 350 feet south of the proposed parking lot at the project site. At this distance, parking lot activities would only result in maximum noise levels of 53 dBA L max. Peak noise levels
from parking lot activities would be intermittent and when averaged over one hour, these sources would not exceed the City’s 50 dBA L
eq standard for residential land uses.
156
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 120

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Mechanical Equipment. In addition, adjacent off-site land uses would be potentially exposed to stationary-source noise impacts from HVAC equipment. The project is expected to have HVAC units serving the proposed building at the project site. The HVAC equipment could operate 24 hours per day. One HVAC unit would generate a noise level of 72 dBA Leq at 3.3 feet, based on manufacturer testing of typical equipment for such uses. However, based on the distance of 40 feet to the closest off-site sensitive receptor to the north (Quarry Lane School) and accounting for shielding from the rooftop parapet wall, the noise level associated with the operation of the proposed HVAC equipment would approach 46 dBA Leq and would be below the City’s 50 dBA Leq exterior noise standard for mechanical equipment. Therefore, the project would not result in generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or any other applicable standards.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and Mitigation Measures 3.10/4.0 and 3.10/5.0 identified in the Eastern Dublin EIR, there would be no new impacts related to noise beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (b) Generate excessive ground borne vibration or ground borne noise Less Than Significant with Mitigation Incorporated. Construction of the proposed project could result in the generation of ground borne vibration. This construction vibration impact analysis assesses the potential for building damages using vibration levels in peak particle velocity (PPV).

The criteria for environmental impacts resulting from ground borne vibration are based on the maximum levels for a single event. The guidelines within the Federal Transit Administration (FTA) Manual have been used to determine vibration impacts (refer to Table K, below).

Table K: Construction Vibration Damage Criteria
Building Category PPV (inches/second)
Reinforced concrete, steel, or timber (no plaster) 0.50 Engineered concrete and masonry (no plaster) 0.30
Non-engineered timber and masonry buildings 0.20
Buildings extremely susceptible to vibration damage 0.12 Source: Transit Noise and Vibration Impact Assessment Manual (FTA 2018), Table 12-3.

FTA = Federal Transit Administration PPV = peak particle velocity

The FTA Manual guidelines show that a vibration level of up to 0.2 inches/second PPV is considered safe for non-engineered timber and masonry buildings and would not result in any construction vibration damage. Therefore, in order to be conservative, the 0.2 inches/second PPV threshold has been used when evaluating vibration impacts at the nearest structures to the site.
157
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 121

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table L shows the PPV values at 25 feet from a construction vibration source. Bulldozers and other heavy-tracked construction equipment (except for vibratory rollers) generate approximately 0.089 inches/second PPV of ground borne vibration when measured at 25 feet.

Table L: Vibration Source Amplitudes for Construction Equipment Equipment Reference PPV (inches/second) at 25 feet
Vibratory Roller 0.210
Hoe Ram 0.089
Large Bulldozer 0.089
Caisson Drilling 0.089
Loaded Trucks 0.076
Jackhammer 0.035
Small Bulldozer 0.003
Sources: Transit Noise and Vibration Impact Assessment (FTA 2018).

PPV = peak particle velocity

Construction vibration, similar to vibration from other sources, would not have any significant effects on outdoor activities (e.g., those outside of residential buildings in the project vicinity).

While vibration from construction activity was not assessed in the Eastern Dublin EIR, the proposed project is expected to include the use of heavy equipment similar to a large bulldozer.

The distance to the nearest buildings for vibration impact analysis is measured between the nearest off-site buildings and the project disturbance areas because vibration impacts occur normally within the buildings. The formula for vibration transmission is provided below.

PPV
equip = PPVref x (25/D)1.5
The closest structure to the project site includes the Quarry Lane School building located approximately 10 feet north of the project site. At this distance, the closest structure would experience vibration levels of approximately 0.352 inches/second PPV with the use of heavy equipment at the property line. Based on this analysis, vibration levels would exceed the established guidelines considered for damage potential. Vibration levels at all other buildings, which are further from construction activity, would be lower due to distance propagation and would be below the thresholds for damage potential. With implementation of Project Specific Mitigation Measure NOI-1, which requires preparation and implementation of a vibration and construction contingency plan during project construction activities, impacts related to vibration would be less than significant. In addition, short-term construction impacts related to ground-borne vibration or ground-borne noise would be minimal and temporary in nature and would cease upon construction.

Project-Specific MM-NOI-1: Construction Vibration Damage. Due to the close proximity to surrounding structures, the City of Dublin (City) Director of Community Development, or designee, shall verify prior to issuance of demolition or grading permits, that the approved plans require that the construction contractor to implement the following noise reduction measures during project construction activities to ensure that damage does not occur at surrounding 158
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 122

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
structures should heavy equipment be necessary within 15 feet of surrounding structures:
• Identify structures that are located within 15 feet of heavy construction activities and that have the potential to be affected by ground-borne vibration. This task shall be
conducted by a qualified structural engineer as approved by the City’s Director of Community Development, or
designee.
• Develop a vibration monitoring and construction
contingency plan for approval by the City Director of
Community Development, or designee, to identify
structures where monitoring would be conducted; set up a vibration monitoring schedule; define structure-specific vibration limits; and address the need to conduct photo, elevation, and crack surveys to document before and after construction conditions. Construction contingencies would be identified for when vibration levels approached the
limits.
• At a minimum, monitor vibration during initial demolition activities. Monitoring results may indicate the need for more or less intensive measurements.
• When vibration levels approach limits, suspend
construction and implement contingencies as identified in the approved vibration monitoring and construction
contingency plan to either lower vibration levels or secure the affected structures.

As indicated above, vibration levels at the existing Quarry Lane school would exceed the established vibration guidelines considered for damage potential, resulting in a new significant impact than was previously identified in the Eastern Dublin EIR. Therefore, implementation of Project-Specific Mitigation Measure NOI-1 would be required to reduce vibration during project construction. With implementation of Project-Specific Mitigation Measure NOI-1, this impact would be reduced to a less-than-significant level.
(c) Excessive noise level near an airport
No New Impact. The project site is located approximately 3.14-mile northwest of the Livermore Municipal Airport. Aircraft noise is occasionally audible at the project site; however, no portion of the project site lies within the 60 dBA CNEL noise contours of this airport nor does any portion of the project site lie within two miles of any other airfield or heliport. Therefore, the 159
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 123

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
proposed project would not result in the exposure of people residing or working in the project area to excessive noise levels and there would be no impact.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR for the following project impacts (subsections (a) and (c)): generate noise exceeding standards and excessive noise level near an airport. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts related to noise beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met for these two project impacts. Therefore, no further environmental review is required for these two project impacts.

For the project impact related to generation of excessive ground borne vibration or ground borne noise (subsection (b)), with the implementation of a project-specific mitigation measure (Mitigation Measure NOI-1), impacts to noise would be less than significant.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Dublin, City of. 2020. Municipal Code. December.

Federal Highway Administration (FHWA). 2006. Highway Construction Noise Handbook.

Roadway Construction Noise Model, FHWA-HEP-06-015. DOT-VNTSC-FHWA-06-02. NTIS No. PB2006-109012. August
Federal Transit Administration (FTA). 2018. Office of Planning and Environment. Transit Noise and Vibration Impact Assessment. FTA Report No. 0123. September.

RGD Acoustics. 2016. Environmental Noise Impact Study for 6237 Tassajara Road, Dublin, CA.

March 10.

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).
160
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 124

December 7

161
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 125

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Population and Housing

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

13. POPULATION AND HOUSING. Would the project:
a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new
homes and businesses) or indirectly (for example,
through extension of roads or other infrastructure)?
X
b) Displace substantial numbers of existing people or
housing, necessitating the construction of replacement
housing elsewhere?
X
Environmental Setting
According to the City of Dublin General Plan, in 2010, Dublin’s total population was estimated at 46,036 and represented 17 percent of the 269,437 residents in the Tri-Valley area. Data from the 2020 United States Census indicates that Dublin’s total population has grown to 72,589 and 24,426 housing units.

Previous CEQA Documents
Eastern Dublin EIR
Section 3.2 in the Eastern Dublin EIR provides the demographics, housing, and employment context for the EDSP. The Eastern Dublin EIR provided a program-level analysis of the development potential envisioned for the EDSP Area, including the increased development potential in the City, the Tri-valley area, and the entire San Francisco Bay Area. The Eastern Dublin EIR specifically evaluated new development potential in the EDSP Area of up to 17,970 residential units and approximately 12 million square feet of non-residential space, including approximately 5 million square feet of commercial, 4 million square feet of office, and 2 million square feet of industrial park. No impacts related to population or displacement of existing housing were identified. Growth-inducing impacts associated with implementation of the EDSP were evaluated in Section 5.2 of the Eastern Dublin EIR. Growth-inducing impacts were identified for utilities and community services.

Project Impacts and Mitigation Measures
(a) Population growth
No New Impact. The proposed project would construct a Performing Arts Center for the existing Quarry Lane School, including a performance hall with seating for approximately 350 people. The proposed project would provide a dedicated space for the existing performing arts program but would not include any growth in total student enrollment or an expansion of 162
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 126

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
existing school operations. No new housing, commercial, or industrial space would be developed as part of the proposed project. The proposed project would not result in the conversion of adjacent land uses or provide access to previously inaccessible areas. It would not provide additional major infrastructure or increase the capacity of the existing water system.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to population growth beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(b) Housing and resident displacement
No New Impact. The project site contains an existing residence and various out-buildings. The Eastern Dublin EIR determined that due to the limited number of current residents, development of the project site would not displace substantial number of existing housing units or people; therefore, no impact was identified. As the Eastern Dublin EIR addressed the removal of the existing residence on the project site, there would be no impact, and no new or substantially more severe impacts would occur. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to housing and resident displacement beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts to population and housing beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Association of Bay Area Governments and Metropolitan Transportation Commission. 2018. Plan Bay Area Projections 2040. May.

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

U.S. Census Bureau. 2020. QuickFacts, Dublin city website:
https://www.census.gov/quickfacts/fact/table/dublincitycalifornia/PST040221 (accessed July 21, 2022).
163
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 127

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
U.S. Census Bureau. 2021. Longitudinal Employer-Household Dynamics Origin-Destination Employment Statistics (2002-2019). Washington, DC: U.S. Census Bureau, Longitudinal- Employer Household Dynamics Program, accessed on June 20, 2022, at https://onthemap.ces.census.gov. LEHD Origin-Destination Employment Statistics Version 7.5
Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

164
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 128

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Public Services

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

14. PUBLIC SERVICES. Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities or need for new or physical altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services:
a) Fire protection? X
b) Police protection? X
c) Schools? X
d) Parks? X
e) Other public facilities? X
Environmental Setting
The proposed project is located within the City of Dublin and is served by the following existing public services.

Fire Protection
Fire suppression, emergency medical and rescue services, and other life safety services are provided to the project area and site by the Alameda County Fire Department (ACFD). There are three fire stations in Dublin, with the closest to the project site being Fire Station No. 18 at 4800 Fallon Road, approximately 4.4 miles northwest. Back up service to the Project area would be provided by Fire Station 17, located at 6200 Madigan Road in Dublin.

Police Protection
The Alameda County Sherriff’s Office provides contracted police protection to the project area and project site. The Dublin Police Services headquarters are located at 6361 Clark Avenue, west of the project site.

Schools
The project site is served by the Dublin Unified School District, which operates seven elementary, two middle, one K-8, one comprehensive high school, and one continuation high school, within the City of Dublin. The closest schools to the project site include Fallon Middle School, Jose Maria Amador Elementary School, and Cottonwood Creek K-8 School. 165
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 129

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Parks
The City’s Public Works Department oversees the maintenance of parks and recreational facilities throughout the City.

Library Services
The Dublin Library is operated by Alameda County Library, with additional funding from the City of Dublin. The Dublin Public Library is located at 200 Civic Plaza, southwest of the project site.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to increased demand for police and fire protection services, fire response to outlying areas, exposure to wildlands hazards, increased demand for schools and school overcrowding, increased demand for parks, and impacts on existing park and trail facilities. Mitigation measures were identified to reduce potential impacts to a less-than-significant level. The following mitigation measures would be applicable to the proposed project:

MM 3.4 /1.0 (Policy 8-4). Provide additional personnel and facilities and revise "beats" as needed in order to establish and maintain City standards for police protection service in Eastern Dublin.

MM 3.4/2.0 (Action Program 8D). Coordinate with the City Police Department regarding the timing of annexation and proposed development, so that the Department can adequately plan for the necessary expansion of services to the area.

MM 3.4/3.0 (Action Program 8E). Incorporate into the requirements of project approval Police Department recommendations on project design that affect traffic safety and crime prevention.

MM 3.4/5.0 Police Review of Proposed Projects. As a part of the development approval process in Eastern Dublin, the City shall require the Police Department to review and respond to the planned development with respect to:
 Project design layout relating to visibility, security, and safety.  Project circulation system and access issues.
 Project implications for emergency response times.

Prior to final approval of non-residential development and improvement plans, the City Police Department shall review the proposed use, layout, design, and other project features for police surveillance/access, security devices, such as alarms and lighting, visibility, and any other police issues or concerns.

166
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 130

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
MM 3.4/7.0 (Program 8F). Establish appropriate funding mechanisms (e.g., Mello Roos District, developer financing with reimbursement agreements, etc.) to cover up-front costs of capital improvements (i.e., fire stations and related facilities and equipment).

MM 3.4/9.0 (Program 8H). Incorporate DRFA recommendations on project design relating to access, water pressure, fire safety and prevention into the requirements for development approval. Require that the following DRF A design standards are incorporated where appropriate:
 Use of non-combustible roof materials in all new construction.  Available capacity of 1,000 GPM at 20 PSI fire flow from project fire hydrants on public water mains. For groupings of one-family and small two-family dwellings not exceeding two stories in height, the fire flow requirements are a minimum of 1,000 GPM. Fire flow requirements for all other buildings will be calculated based on building size, type of construction, and location.  A buffer zone along the backs of homes, which are contiguous with the wildland area. This buffer zone is to be landscaped with irrigated (wet banding) or equivalent fire-resistive vegetation.
 Automatic fire alarm systems and sprinklers in all nonresidential structures for human use.
 Compliance with DRF A minimum road widths, maximum street slopes, parking recommendations, and secondary access road requirements.  Require residential structures outside the DRFA's established response time and zone to include fire alarm systems and sprinklers.

MM 3.4/17.0 (Policy 8-3). Ensure that new development in Eastern Dublin, including both residential and non-residential development, fully mitigates the impact of such growth on school facilities.

MM 3.4/29.0 (Policy 4-29). Ensure, as part of the approval process, that each new development provide its fair share of planned open space, parklands, and trail corridors.

Project Impacts and Mitigation Measures
(a) Fire Protection
No New Impact. The proposed project would consist of a new Performing Arts Center, three classrooms, and other support spaces with a total building area of 13,800 square feet and 167
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 131

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
approximately 126 additional parking spaces. Implementation of the proposed project would provide a new facility to host previously existing events for Quarry Lane School and would not include any growth in total student enrollment or an expansion of existing school operations.

Therefore, development would not increase demand for public services and would not exceed the physical and financial capabilities of the Alameda County Fire Department (ACFD). Further, the proposed project is required to adhere to the CBC, the California Fire Code and City of Dublin codes, ordinance and regulations to minimize fire hazards, including fire prevention and suppression measures; fire hydrants and sprinkler systems; emergency access; and other similar requirements. ACFD would continue to provide services to the project site and would not require additional firefighters to serve the proposed project. The demand for fire protection services resulting from the proposed project would not require the construction of new or alteration of existing fire protection facilities to maintain an adequate level of fire protection service. No physical impacts associated with the provision of fire protection services would occur.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
existing school operations. No new housing, commercial, or industrial space would be developed as part of the proposed project; therefore, the proposed project would not generate increased demand for school facilities and services. No physical impacts associated with the provision of school services would occur.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to public services beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met.

Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

170
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 134

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Recreation

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

15. RECREATION. Would the project:
a) Increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
X
b) Include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment?
X
Environmental Setting
The City of Dublin has a variety of recreational facilities including neighborhood parks, community parks, community facilities, a senior center, open space areas, and a series of trail networks. According to the City of Dublin Parks and Recreation Master Plan, the City of Dublin currently has 18 parks, five deeded park sites, and six school parks and City-owned open space areas that account for nearly 233 acres of dedicated open space and developed park land. In addition, the City has over 59 acres of undeveloped parkland that has either been offered for dedication by landowners or acquired by the City. In addition, the East Bay Regional Park District (EBRPD) operates the Dublin Hills Regional Park, a large open space park with regional trail connections. The Iron Horse Trail runs along the Union Pacific/Southern Pacific Railroad right-of-way, connecting Dublin, the Dublin/Pleasanton BART station, and the City of Pleasanton.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to increased demand for park facilities, fiscal impacts associated with the provision of new park and recreation facilities and impacts on the regional trail system and open space connections. Mitigation measures were identified to reduce potential impacts to a less than significant level. The following mitigation measures would be applicable to the proposed project:

MM 3.4/29.0 (Policy 4-29). Ensure, as part of the approval process, that each new development provide its fair share of planned open space, parklands, and trail corridors.

MM 3.4/31.0 (Action Program 4N). Calculate and assess in-lieu park fees based on the City's parkland dedication ordinance. Credit toward parkland dedication requirements will only be given for level or gently sloping areas suitable for active recreation use. 171
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 135

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Project Impacts and Mitigation Measures
(a, b) Increase the use of existing recreation facilities causing deterioration or require new recreation facilities
The City’s park and recreational facilities are comprised of neighborhood facilities, community facilities, community parks and community center. According to the City of Dublin Parks and Recreation Master Plan, the City of Dublin currently has 18 parks, five deeded park sites, and six school parks and City-owned open space areas that account for nearly 233 acres of dedicated open space and developed park land. In addition, the City has over 59 acres of undeveloped parkland that has either been offered for dedication by landowners or acquired by the City. The number, location and size of parks is consistent with the approved Stage 1 Development Plan as well as the City of Dublin Parks and Recreation Master Plan. The 11.5 acres of parkland within the project site meets the City of Dublin 2015 Parks and Recreation Master Plan ratio of 5.0 acres of parkland per 1,000 residents. Since the project includes sufficient park land it would not increase the use of existing neighborhood and/or regional parks such that a substantial physical deterioration of the facility would occur or be accelerated, nor would it require the construction/expansion of a recreational facility elsewhere which would have an adverse physical effect on the environment.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to the City of Dublin Parks and Recreation Master Plan and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to recreation beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 1985. City of Dublin General Plan. February 11. (Amended November 21, 2017).

Dublin, City of. 2015. City of Dublin Parks and Recreation Master Plan. 172
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 136

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

173
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 137

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Transportation

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

16. TRANSPORTATION/TRAFFIC. Would the project:
a) Conflict with a program, plan, ordinance or policy
addressing the circulation system, including transit,
roadway, bicycle and pedestrian facilities?
X
b) Would the project conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)?
X
c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?
X
d) Result in inadequate emergency access? X
Environmental Setting
The following section describes the existing conditions of the study area, including roadway, transit, bicycle, and pedestrian networks.

Roadway Network
The roadway network surrounding the project site is described in the following section.

Freeways
Interstate 580 (I-580) is a generally east-west freeway that runs south of the project site. I-580 connects the San Francisco Bay Area to the west and the City of Livermore to the east. The posted speed limit in the vicinity of the project is 65 miles per hour (mph). Express lanes are present in both directions and are in effect Monday through Friday from 5:00 a.m. to 8:00 p.m.

Arterials/Collectors/Local Roadways
Tassajara Road is a major north-south roadway in Dublin that connects to Fallon Road/Camino Tassajara to the north and the City of San Ramon and Contra Costa County to the south.

Tassajara Road is classified as an arterial roadway within the City of Dublin; south of I-580 within the City of Pleasanton, the roadway becomes Santa Rita Road. The roadway varies from two lanes to five lanes and is divided along its southern portion, between Stoneridge Drive and Dublin Ranch Drive. On-street parking is not permitted along this roadway. The posted speed limit is 35 mph within the study area. Class II bicycle lanes are present, except for on the overpass over I-580.
174
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 138

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Dublin Boulevard is a six-lane divided east-west roadway that extends west of the project site.

Dublin Boulevard is classified in the City’s General Plan33 as an arterial between its western limits and Tassajara Road and classified as a collector between Tassajara Road and Fallon Road (as well as the proposed extension to North Canyons Parkway). On-street parking is not permitted along this roadway and the posted speed limit is 45 mph in the vicinity of the project.

Dublin Boulevard is proposed to be extended connecting from its current terminus at Fallon Road to North Canyons Parkway in Livermore.

Fallon Road/El Charro Road is a north-south divided roadway that widens from four lanes south of Central Parkway to six lanes to the north; south of I-580, Fallon Road becomes El Charro Road within the City of Pleasanton. Fallon Road is classified as an arterial roadway near the project site. The roadway primarily serves residential land uses within the City of Dublin, with some retail located near I-580. On-street parking is not permitted along this roadway. The posted speed limit is 45 mph in the vicinity of the project.

Transit Facilities
The project area is served by Tri-Valley Wheels, which provides fixed-route bus service operated by the Livermore Amador Valley Transit Authority (LAVTA) to Dublin, Livermore, Pleasanton, and neighboring communities. Wheels also offers a Dial-A-Ride Paratransit service to eligible patrons in Dublin, available wherever fixed-route service is operating. Three routes directly serve the area surrounding the project – Route 2, Route 30R (Rapid), and Route 501 (School Route).

The area is also served by Bay Area Rapid Transit (BART), with the nearest station being Dublin/Pleasanton which is located approximately four miles west of the site. Table M provides details about the bus service that serves the project area.

33 The City of Dublin General Plan. Chapter 5: Land Use and Circulation – Circulation and Scenic Highways Element. Amended 2022. https://www.dublin.ca.gov/DocumentCenter/View/7799/Chapter -5-May- 2020?bidId=
175
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 139

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Table M. Existing Transit Facilities
Route Route
Type Major Destinations Day Times Frequency
2 Fixed
Route
E. Dublin/Pleasanton BART,
Dublin Ranch, Emerald Glen Park,
Fallon Middle School
Weekdays
One AM and one
PM trip to serve
Fallon Middle School
(effective August
2021)
2 per day
30R Rapid
Route
Lawrence Livermore National
Laboratory, East Ave., Livermore
Transit Center, Portola Park and
Ride, Las Positas College, N.

Canyons, Dublin Blvd, E. Dublin
BART, Dublin Civic Center, W.

Dublin BART
Weekdays 5:00 AM to 11:00
PM
Every 30
minutes
Weekends 5:00 AM to 11:00
PM Hourly
501 School
Route
Positano, Fallon Road, Silvera
Ranch, Tassajara Road, Central
Pwky, Dublin HS
Weekdays
One AM and one
PM trip for each
route
2 per day
Source: wheelsbus.com

Bicycle and Pedestrian Facilities
Sidewalks and Class II bike lanes are provided along Tassajara Road adjacent to the project site.

Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potentially significant impacts related to increased traffic associated with implementation of the EDSP, including impacts to freeway, intersection, and roadway operations, transit service extensions, and potential safety hazards for pedestrians and bicycles at street crossings. Mitigation measures were identified to reduce most transportation impacts to a less than significant level. These mitigation measures require construction of new roadways, widening of existing roadways, and improvements to local freeway facilities to accommodate increased vehicle traffic associated with proposed development in Eastern Dublin.

Several traffic impacts were determined to be significant and unavoidable, even with implementation of mitigation. These impacts include impacts to I-580 between Tassajara Road and Airway Boulevard (Impact 3.3/B), cumulative freeway impacts (Impact 3.3E), impacts to the Santa Rita Road/I-580 eastbound ramps (Impact 3.3/I) and cumulative impacts to Tassajara Road (Impact 3.3/N). Applicable mitigation measures from the Eastern Dublin EIR include:

MM 3.3/2.0 (Policy 5-21). Require all non-residential projects with 50 or more employees within the Eastern Dublin General Plan Amendment and Specific Plan area to 176
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 140

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
participate in a Transportation Systems Management (TSM) program. A TSM program would include strategies to reduce the use of single-occupant vehicles such as on-site distribution of transit information and passes, provision of shuttle services to and from BART stations, participation in regional ridesharing services, preferential parking for vanpools and carpools, and flexible or staggered work hours.

MM 3.3/2.1 The Project shall contribute a proportionate amount to regional transportation mitigation programs as determined by the current study by the Tri-Valley Transportation Council. Regional mitigation measures may include implementation of enhanced rail and feeder bus transit services, construction or upgrading of alternative road corridors to relieve demand on the I-580 and l-680 freeways.

MM 3.3/3.0 The Project shall contribute to the construction of auxiliary lanes on l-580 between Tassajara Road and Airway Boulevard. The auxiliary lanes would provide LOSE operations between Tassajara Road and Fallon Road, and LOS D operations between Fallon Road and Airway Boulevard.

MM 3.3/4.0 The Project should contribute a proportionate share to planned improvements at the l-580 /I-680 interchange and the associated mitigation on adjacent local streets. The improvements would provide additional capacity on I-680 north of I- 580 and would provide LOS D operations.

MM 3.3/5.0 Local jurisdictions shall require that future developments participate in regional transportation mitigation programs as determined by the current study by the Tri-Valley Transportation Council.

MM 3.3/6.0 The City of Dublin shall coordinate construction of additional lanes on all approaches at the intersection. The required lanes on the northbound approach on Dougherty Road include two left-turn lanes, three through lanes (one more than existing) and one right-turn lane (one more than existing). The required lanes on the southbound approach on Dougherty Road include two left-turn lanes (one more than existing), three through lanes (one more than existing) and one right-turn lane. The required lanes on the eastbound approach on Dublin Boulevard include one left-turn lane, three through-lanes (one more than existing) and one right-turn lane. The required lanes on the westbound approach on Dublin Boulevard include two left-turn lanes, three through-lanes and one right-turn lane. The Project shall contribute a proportionate share of the improvement costs. The improvements would provide LOS D operations.

MM 3.3/7.0 The City of Dublin shall coordinate with the City of Pleasanton and Ca/trans to restripe the I-580 eastbound off-ramp to provide two left-turn lanes and one right- turn lanes (existing lanes are one left-turn lane and two right-turn lanes). The Project shall contribute a proportionate share of the improvement costs. The improvements would provide LOS C operations.
177
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 141

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
MM 3.3/8.0 The City of Dublin shall coordinate with Ca/trans to widen the l-580 westbound off-ramp to provide two left-turn lanes and two right-turn lanes, and to modify the northbound approach to provide three through lanes. The Project shall contribute a proportionate share of the improvement costs. The improvements would provide LOS B operations.

MM 3.3/9.0 The City of Dublin shall coordinate with the City of Pleasanton and Caltrans to widen the l-580 eastbound off-ramp to provide two left-turn lanes and two right-turn lanes. These improvements would provide LOS E operations. Further improvement to the level of service could be provided by prohibiting left turns from southbound Santa Rita Road to eastbound Pimlico Drive during peak periods. This left-turn prohibition would require out-of-direction travel for drivers wishing to access Pimlico Drive but would provide level of service D operations. The Project shall be required to contribute a proportionate share of the improvement costs.

MM 3.3/ 10.0 The City of Dublin shall coordinate with the City of Livermore to modify the intersection to provide three through-lanes and a right-turn lane eastbound, and two left-turn lanes and two through-lanes westbound. The Project shall contribute proportionate share of the improvement costs. The improvements would provide LOS operations.

MM 3.3/ 11.0 The City of Dublin shall coordinate with the City of Livermore and Caltrans to widen the Airway Boulevard overcrossing of l-580 by 12 feet to provide adequate storage for northbound left-turns and widen of the off-ramp to provide one left and one left-right lane. The Project shall contribute a proportionate amount toward the cost of these improvements. The improvements would provide LOS D operations.

MM 3.3/ 12.0 The City of Dublin shall coordinate with Ca/trans to ensure that modifications to the l-580 interchange at Fallon Road/El Charro Road include provisions for unimpeded truck movements to and from El Charro Road. The Project shall contribute a proportionate share of improvement costs.

MM 3.3/ 15.2 The Project shall contribute a proportionate amount to the capital and operating costs of transit service extensions.

MM 3.3/ 16.1 Locate pedestrian and bicycle paths so that their crossings of major arterial streets coincide with signalized street intersections, providing a signalized pedestrian and bicycle crossing of the major street.

Project Impacts and Mitigation Measures
(a) Conflict with applicable transportation plans standards, including bicycle and pedestrian facilities
No New Impact. As outlined in the Project Description, the proposed project would provide space to host the school’s existing performance art shows and events, as well as an improved 178
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 142

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
space for high school commencement ceremonies. Currently, the school hosts approximately eight events annually, including the high school graduation ceremony. These events occur in the evenings and on weekends. Implementation of the proposed project would not change the frequency or capacity of such events but would provide a new, dedicated facility in which to host these events. As such, the proposed project would not generate additional vehicle trips to/from the school beyond what currently occurs under existing conditions.

The proposed project would not alter or interfere with transit, bicycle or pedestrian facilities.

The proposed project would maintain existing sidewalks along Tassajara Road. Paved pedestrian walkways would be provided to connect the parking area with the proposed performing arts center, as well as, to provide pedestrian connections to proposed sidewalks along Tassajara Road. Therefore, impacts to bicyclists, pedestrians, and transit service providers resulting from implementation of the proposed project would remain less than significant and the proposed project would not result in new significant or substantially more severe impacts related to alternative forms of transportation.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, there would be no new impacts related to Conflict with applicable transportation plans standards, including bicycle and pedestrian facilities beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(b) Conflict with CEQA Section 15064.3 (b)
No New Impact. Since certification of the Eastern Dublin EIR, the issue of vehicle miles traveled (VMT) has become a more prominent issue of concern as evidenced by passage of SB 743 in 2013. Previously, CEQA analysis was conducted using a level of service (LOS) measurement that evaluated traffic delay. As specified under SB 743 and implemented under Section 15064.3 of the State CEQA Guidelines (effective December 28, 2018), VMT is the required metric to be used for identifying CEQA impacts and mitigation. In December 2018, the Office of Planning and Research (OPR) published a Technical Advisory on Evaluating Transportation Impacts, including guidance for VMT analysis. The Office of Administrative Law approved the updated CEQA Guidelines and lead agencies were given until July 1, 2020, to implement the updated guidelines for VMT analysis.

The topic of the project’s contribution to vehicle miles traveled (VMT) was not analyzed in the Eastern Dublin EIR. Because the Eastern Dublin EIR has been certified, the determination of whether VMT needs to be analyzed for this project is governed by the law on supplemental or subsequent EIRs (Public Resources Code section 21166 and CEQA Guidelines, Sections 15162 and 15163). VMT is not required to be analyzed unless it constitutes new information of substantial importance that was not known and could not have been known at the time the previous environmental documents were certified as complete (Public Resources Code Section 21166 and CEQA Guidelines Section 15162 and 15163). VMT was known at the time of the 179
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 143

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
certification of the Eastern Dublin EIR and could have been analyzed. A change in regulations for impact analysis under CEQA is not a trigger for further environmental review under supplemental review standards. Therefore, no supplemental environmental analysis of the project’s impacts on this issue is required under CEQA. (c) Substantially increase hazards due to a design feature No New Impact. New vehicular access is proposed from Tassajara Road via a right-in only driveway at the southern end of the project site with a connection to the existing school parking lot to the north, which has a signalized entry and exit on Tassajara Road. The proposed additional parking area, consisting of 126 spaces, would be located east and south of the proposed performing arts center. The design, construction, and maintenance of project site access locations would be in compliance with the City’s Municipal Code. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts related to design hazards beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required. (d) Result in inadequate emergency access
No New Impact. The proposed project would not result in inadequate emergency access.

Emergency vehicle access to the project site would continue to be provided via Tassajara Road.

The design, construction, and maintenance of project site access locations would be in compliance with the City’s Municipal Code and would be required to meet all emergency access standards. In addition, through Site Plan Review, emergency services would review proposed plans to ensure that emergency vehicle access and circulation is adequate. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to emergency access beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to transportation beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met.

Therefore, no further environmental review is required. 180
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 144

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

181
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 145

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Tribal Cultural Resources

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

17. TRIBAL CULTURAL RESOURCES. Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
a) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section
5020.1(k), or
X
b) A resource determined by the lead agency, in its
discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native
American tribe.

X
Environmental Setting
Assembly Bill 52, which became law on January 1, 2015, provides for consultation with California Native American tribes during the CEQA environmental review process, and equates significant impacts to “tribal cultural resources” with significant environmental impacts. Public Resources Code (PRC) Section 21074 states that “tribal cultural resources” are:

Sites, features, places, cultural landscapes, sacred places, and objects with cultural value to a California Native American tribe and are one of the following:
• Included or determined to be eligible for inclusion in the California Register of Historical Resources.
• Included in a local register of historical resources as defined in subdivision (k) of PRC Section 5020.1.
• A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of PRC Section 5024.1. In applying the criteria set forth in subdivision (c) of PRC Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe.
182
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 146

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
A “historical resource” (PRC Section 21084.1), a “unique archaeological resource” (PRC Section 21083.2(g)), or a “nonunique archaeological resource” (PRC Section 21083.2 (h)) may also be a tribal cultural resource if it is included or determined to be eligible for inclusion in the California Register.

The consultation provisions of the law require that a public agency consult with local Native American tribes that have requested placement on that agency’s notification list for CEQA projects. Within 14 days of determining that a project application is complete, or a decision by a public agency to undertake a project, the lead agency must notify tribes of the opportunity to consult on the project, should a tribe have previously requested to be on the agency’s notification list. California Native American tribes must be recognized by the California Native American Heritage Commission as traditionally and culturally affiliated with the project site and must have previously requested that the lead agency notify them of projects. Tribes have 30 days following notification of a project to request consultation with the lead agency.

The purpose of consultation is to inform the lead agency in its identification and determination of the significance of tribal cultural resources. If a project is determined to result in a significant impact on an identified tribal cultural resource, the consultation process must occur and conclude prior to adoption of a Negative Declaration or Mitigated Negative Declaration, or certification of an EIR (PRC Sections 21080.3.1, 21080.3.2, 21082.3).

In March 2022, the City provided formal notification to the California Native American tribe that has requested notification under Assembly Bill 52. No response was received and no formal tribal consultation was requested.

Previous CEQA Documents
The topic of the project’s potential impacts to tribal cultural resources was not specifically analyzed in the Eastern Dublin EIR. Since certification of the Eastern Dublin EIR, the topic of Tribal Cultural Resources has been added as a new category in the CEQA checklist. However, the Eastern Dublin EIR analyzed prehistoric and historic resources and included mitigation measures related to historical and archaeological resources. These measures are listed in the cultural resources section of this Initial Study Checklist.

Because the Eastern Dublin EIR has been certified, the determination of whether tribal cultural resources need to be analyzed for this proposed project is governed by the law on supplemental or subsequent EIRs (Public Resources Code section 21166 and CEQA Guidelines, Sections 15162 and 15163). Tribal cultural resources are not required to be analyzed under those standards unless it constitutes "new information of substantial importance, which was not known and could not have been known at the time the previous EIR was certified as complete” (CEQA Guidelines Sec. 15162 (a) (3)).

The topic of the project’s potential impacts to tribal cultural resources was not specifically analyzed in the EDSP EIRs; however, the issue of tribal cultural resources was widely known prior to the certification of these EIRs. Section 106 of the National Preservation Act, established 183
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 147

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
in 1966, requires tribal consultation in all steps of the process when a federal agency project or effort may affect historic properties that are either located on tribal lands, or when any Native American tribe or Native Hawaiian organization attaches religious or cultural significance to the historic property, regardless of the property’s location. Further, tribal cultural resources have been considered in the evaluation of impact to historical and archaeological resources since CEQA was enacted.

Project Impacts and Mitigation Measures
(a) Listed or eligible for listing in the California Register of Historical Resources No New Impact. As described in Section 5, Cultural Resources, the project site does contain a historic-period residence, which is over 50 years old. The residence and associated out- buildings were evaluated for significance as a historical resource. However, these resources were determined to be not eligible, either individually or as a group, for inclusion on the California Register because it is not associated with events that have made a significant contribution to the broad patterns of California’s history and cultural heritage; associated with the life of persons important in our past; is not notable for its architectural or design qualities or as an important example of its architectural style; and is unlikely to yield information important to the history of the City of Dublin, the San Ramon Valley, Alameda County, or California. Although these existing buildings will be demolished as part of the proposed project, these buildings do not qualify as historical resources for the purposes of CEQA because they do not meet the eligibility criteria for inclusion on the California Register. As such, there are no known significant archaeological or tribal cultural resources within the project site and the proposed project would not cause a substantial adverse change in the significance of a tribal cultural resource defined as a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American Tribe, and that is listed or eligible for listing in the CRHR or in a local register of historical resources as defined in Public Resources Code (PRC) Section 5020.1(k). The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to tribal cultural resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(b) Significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1
No New Impact. No archaeological resources were identified on the project site as part of the cultural resources study. Therefore, the City, in its role as lead agency, has determined that the project site is not a resource significant to a California Native American tribe. Development proposed as part of the current project would be consistent with the development previously analyzed in the Eastern Dublin EIR. As described in Section 5, Cultural Resources, implementation of Mitigation Measure 3.9/5.0 as identified in the Eastern Dublin EIR would 184
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 148

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
reduce any potential impacts to archaeological and/or Native American resources to a less- than-significant level. The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to tribal cultural resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Conclusion
No places, objects, or the like with cultural value to a California Native American Tribe have been previously identified in the project area and such artifacts are unlikely to be present.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts to tribal cultural resources beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

185
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 149

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Utilities and Service Systems

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

18. UTILITIES AND SERVICE SYSTEMS. Would the project:
a) Require or result in the relocation or construction of new or expanded water, wastewater treatment or storm
water drainage, electric power, natural gas, or
telecommunications facilities the construction or
relocation of which could cause significant
environmental effects?
X
b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development
during normal, dry and multiple dry years?
X
c) Result in a determination by the wastewater treatment provider which serves or may serve the project that it
has adequate capacity to serve the project projected
demand in addition to the provider’s existing
commitments?
X
d) Generate solid waste in excess of State or local
standards, or in excess of the capacity of local
infrastructure, or otherwise impair the attainment of
solid waste reduction goals?
X
e) Comply with federal, state, and local statutes and
regulations related to solid waste?
X
Environmental Setting
A variety of local and regional providers in this area operate and maintain utility and service system facilities associated with electricity, water, stormwater, wastewater, solid waste, communications, and natural gas. As outlined in the Project Description, the project site is currently served by the Dublin San Ramon Services District (DSRSD) and PG&E.

Water
The Dublin San Ramon Services District (DSRSD) provides water service at the project site.

DSRSD is responsible for providing both potable and recycled water to the City of Dublin, and the Dougherty Valley area of the City of San Ramon in Contra Costa County. DSRSD’s water service area also includes Camp Parks, the Federal Correctional Institution (FCI), and Alameda County’s Santa Rita Jail. Zone 7 supplies treated potable water to DSRSD. Treated potable water enters DSRSD’s distribution system from five metered turnouts from the Zone 7 transmission system.
186
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 150

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
To reduce the demand for potable water, DSRSD promotes water recycling and is a member of the WaterReuse Association. In 1995, DSRSD and EBMUD, through a joint powers agreement, formed the DSRSD-EBMUD Recycled Water Authority (DERWA). DERWA serves as a wholesaler to deliver recycled water to DSRSD and EBMUD, who in turn deliver the recycled water to their respective service areas. DERWA’s San Ramon Valley Recycled Water Project (SRVRWP) provides a backbone distribution system that delivers recycled water to both DSRSD and EBMUD distribution systems. DSRSD’s recycled water treatment facilities deliver recycled water to the SRVRWP. Recycled water is produced at DSRSD’s wastewater treatment plant at the Recycled Water Treatment Facility (RWTF). The RWTF produces recycled water that meets the California Title 22 requirements for unrestricted reuse.

Wastewater
Wastewater collection and treatment services are also provided by DSRSD for the City of Dublin, City of Pleasanton, Camp Parks, FCI, Santa Rita Jail, and the southern portion of San Ramon. DSRSD owns and operates a wastewater treatment plant in Pleasanton that has a capacity of 17 million gallons per day (mgd). The existing wastewater service area encompasses approximately 13,340 acres, or 20.85 square miles. Within the wastewater service area there are currently 207 miles of gravity mains, one permanent lift station, and one temporary lift station. The permanent lift station has 26 feet of force main.

Stormwater
Drainage and flood control in the Eastern Dublin area is the responsibility of the City of Dublin and Zone 7. Zone 7 is responsible for master planning, overseeing construction coordination, and maintaining major storm drain channels and culverts in Eastern Dublin. The City has jurisdiction and maintenance responsibility for local storm drains that discharge to the Zone 7 flood control system. Runoff from the project area drains mostly via overland flow, which eventually collects just north and east of the Fallon Road/I-580 Interchange where it then flows, via a double box culvert west under Fallon Road.

Electricity
The East Bay Community Energy provides electricity to Dublin over PG&E’s distribution system.

PG&E provides natural gas service to the San Francisco Bay region and serves the project site.

Solid Waste
The City of Dublin has a Collection Services Agreement with a private solid waste collection company for residential and commercial garbage collection. The City also has comprehensive recycling and organics collection programs. All single-family residences are provided with three stream collection containers (landfill, recycle, organics). As of January 1, 2022, all service accounts (with a few exceptions) are required to subscribe to three-stream collection services due to State legislation (SB 1383).

Solid waste generated within the City is deposited at the Altamont Landfill which has a total estimated permitted capacity of 62 million cubic yards. The Altamont Landfill is approximately 26 percent full and is estimated to reach capacity in January 2029. 187
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 151

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Previous CEQA Documents
Eastern Dublin EIR
The Eastern Dublin EIR identified potential significant impacts related to lack of a wastewater collection system, extension of a sewer trunk line with capacity to serve new developments, limited treatment plant capacity and wastewater disposal capacity, increased energy use for wastewater treatment and wastewater disposal, potential failure of the export disposal system, pump station noise and odors, storage basin odors and potential failure, recycled water system operations, recycled water storage failure, loss of recycled water system pressure, and secondary impacts from recycled water system operation. Mitigation measures were identified to reduce most wastewater impacts to a less than significant level. Impacts associated with increased energy use for wastewater treatment and disposal were determined to be significant and unavoidable, even with implementation of mitigation. The following mitigation measures would apply to the proposed project:

MM 3.5/1.0 (Program 9P). Connection to Public Sewers. Require that all development in the Specific Plan area be connected to public sewers. Exceptions to this requirement, in particular septic tank systems, will only be allowed upon receipt of written approval from the Alameda County Environmental Health Department and DSRSD.

MM 3.5/4.0 (Program 9M). DSRSD Service. Require a "will-serve" letter from DSRSD prior to permit approval for grading.

MM 3.5/5.0 (Program 9N). DSRSD Standards. Require that design and construction of all wastewater systems be in accordance with DSRSD standards.

The Eastern Dublin EIR also identified potential significant impacts related to overdraft of local groundwater resources, increased demand for water, additional treatment plant capacity, lack of a water distribution system, inducement of substantial growth, increase in energy usage through operation of the water distribution system, potential water storage reservoir failure, potential loss of system pressure, and potential pump station noise. Mitigation measures were identified to reduce most water impacts to a less than significant level. Impacts associated with increased energy use for water distribution and population growth were determined to be significant and unavoidable, even with implementation of mitigation. The following mitigation measures would apply to the proposed project:

MM 3.5/25.0 Encourage all developments in the Specific Plan and Project to connect to the DSRSD water system.

MM3.5/26.0 (Program 9A). Water Conservation. Require the following as conditions of project approval in eastern Dublin:
 Use of water-conserving devices such as low-flow shower heads, faucets, and toilets.
188
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 152

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
 Support implementation of the DSRSD Water Use Reduction Plan where appropriate.
 Water efficient irrigation systems within public rights-of-way, median islands, public parks, recreation areas and golf course areas (see Program 9B on Water Recycling).
 Drought resistant plant palettes within public rights-of-way, median islands, public parks, recreation areas and golf course areas.

MM3.5/27.0 (Program 9B). Water Recycling. Require the following as conditions of project approval in eastern Dublin:
 Implementation of DSRSD and Zone 7 findings and recommendations on uses of recycled water to augment existing water supplies.
 Work with DSRSD to explore use of recycled water in eastern Dublin through potential construction of a recycled water distribution system. Construction of such a recycled water system will require approval of the use of recycled water for landscape irrigation by DSRSD, Zone 7, and the San Francisco Bay Regional Water Quality Control Board.

MM 3.5/37.0 (Program 9E). DSRSD Standards. Require that design and construction of all water system facility improvements be in accordance with DSRSD standards.

MM 3.5/38.0 (Program 9G). DSRSD Service. Require a "will-serve" letter from DSRSD prior to grading permit approval.

Potentially significant impacts related to storm drainage identified in the Eastern Dublin EIR are described in Section 9.0, Hydrology and Water Quality.

Project Impacts and Mitigation Measures
(a) Require relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas or telecommunications facilities No New Impact. The proposed project would not require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunication facilities beyond that which was already anticipated in the Eastern Dublin EIR. The proposed project is not anticipated to generate greater demand for utility services than the residential development proposed as part of the EDSP and evaluated in the Eastern Dublin EIR as the proposed performing arts center would provide a dedicated facility to accommodate existing events that currently occur at the Quarry Lane School.

As described below, DSRSD provides potable water to the project site through an existing water main in Tassajara Road. DSRSD’s 2020 Urban Water Management Plan (UWMP) describes the existing and planned sources of water available in the water system service area through the 189
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 153

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
year 2040. The UWMP has determined that water supplies would be adequate during normal year, single-dry year, and multiple-dry year scenarios through 2040 based on the development of the land uses within the DSRSD’s service area, including the City of Dublin. The proposed project would not substantially increase demand for water and would therefore not exceed the capacity of existing water treatment facilities. The proposed project would not require the construction of new water treatment facilities, or the expansion of existing facilities, other than those already planned as part of the UWMP. The proposed project would include the installation of new water lines on the site that would connect to the existing water main within Tassajara Road. Proposed water lines would include 8-inch water lines for fire suppression and 4-inch water lines for domestic water use. The proposed project would connect directly to existing mains, which have sufficient capacity to accommodate the proposed project.

DSRSD maintains existing sanitary sewer lines within the vicinity of the project site, including the existing sanitary sewer main located within Tassajara Road. New 4-inch, sanitary sewer lines would be installed within the project site and would tie into the existing sanitary sewer main within Tassajara Road. The new sanitary sewer lines installed within the project site would be constructed in conformance with City and DSRSD standards, and their construction would not cause significant environmental effects.

The project site is largely undeveloped and contains minimal impervious surfaces. Upon construction of the proposed project, approximately 70 percent of the project site would be covered with impervious surfaces, and the remaining 30 percent would be covered by pervious surfaces, consisting of landscaped and stormwater retention areas. The proposed project would include approximately 3,460 square feet of bioretention space on the project site that would be used for stormwater quality control. The proposed project would include approximately 18 bioretention basins and storm drains throughout the project site, which would connect to existing storm drain pipeline in Tassajara Road. Proposed storm drainage facilities would conform with the Alameda County C.3 Stormwater Technical guidelines and requirements.

Electricity and gas service is provided to the project site by the Pacific Gas & Electric Company (PG&E). As described in the Project Description, lighting is proposed to promote security and safety for park users and to accommodate nighttime use of building facilities and parking security. Proposed lighting would tie into existing electric utilities within Tassajara Road and is not anticipated to generate substantial additional demand such that new facilities or expansion of facilities would be required.

The proposed project would include connections to existing utilities that run adjacent to the project site within Tassajara Road. These connections would not be considered “major” lines because these improvements would be made as additions to the existing infrastructure.

Further, these connections would be conducted in accordance with each utility purveyor’s specification and accordance with City guidelines.

On-site utility infrastructure necessary to serve the proposed project—including water, sanitary sewer, drainage, water quality treatment, and dry utilities (e.g., electricity, natural gas, cable)— would be installed within the project site and would connect to the existing utility lines within 190
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 154

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Tassajara Road. No new or expanded utility lines or facilities are required off-site, except as needed for the utility connections.

Currently, DSRSD’s primary water supply source is purchased potable water from Zone 7, augmented by recycled water produced at DSRSD’s RWTF. DSRSD also has a groundwater pumping quota (GPQ) from the local groundwater basin, pumped on its behalf by Zone 7, the local groundwater basin manager. Imported water from the State Water Project, which is owned and operated by the Department of Water Resources, is by far Zone 7’s largest water source, providing approximately 90 percent of the treated water supplied to its customers on an annual average basis. The proposed project would be served by these systems. DSRSD anticipates the same water supply mix to be available through 2040. With the projects and programs implemented by DSRSD and Zone 7, water supplies are projected to meet demands.

As described above, the type and intensity of development associated with the proposed project (e.g., performing arts center to serve the existing school) would be less than assumed for the project site in the City’s General Plan (e.g., medium density residential), including the EDSP and accounted for in the UWMP. As stated in the UWMP, DSRSD can meet its water demand under multiple dry years with diversified supply and conservation measures.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts related to water supply beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA 191
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 155

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
standards for supplemental review are met. Therefore, no further environmental review is required.
(c) Sufficient wastewater capacity
No New Impact. Wastewater collection and treatment services are provided by The Dublin San Ramon Services District (DSRSD) serving 196,000 customers. DSRSD is the purveyor of wastewater collection and treatment services within the City of Dublin. The wastewater collection system includes over 170 miles of sanitary sewers. Disposal of treated wastewater is under the jurisdiction of the Livermore-Amador Valley Water Management Authority (LAVWMA). Wastewater collected from the DSRSD service area travels by gravity to the DSRSD wastewater treatment plant which is located in the City of Pleasanton. The plant has a rated dry-weather capacity of 17.0 mgd. Disposal of treated effluent from the treatment plant in Pleasanton is the responsibility of LAVWMA who exports secondary treated wastewater to the East Bay Dischargers Authority interceptor pipeline for ultimate discharge to the San Francisco Bay via a deepwater outfall. LAVWMA facilities are designed to export a maximum flow of 41.2 mgd during wet weather events.

Since the adoption of the Eastern Dublin EIR, the DSRSD has updated the Wastewater Collection System Master Plan (in 2017), which accounts for build out of the project site. As described above, the type and intensity of development associated with the proposed project (e.g., performing arts center to serve the existing school) would be less than assumed for the project site in the City’s General Plan (e.g., medium density residential), including the EDSP and accounted for in the Wastewater Collection System Master Plan. The proposed project would result in a very minor contribution to the daily permitted capacity of the DSRSD’s wastewater treatment plant and would not exceed the plant capacity.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts related to wastewater capacity beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(d-e) Adequate landfill and compliance
No New Impact. Operation of the proposed project is not anticipated to generate a significant amount of solid waste. Users of the Quarry Lane School Performing Arts Center would dispose of garbage, but not in amounts that would greatly exceed average per capita garbage generation rates. In addition, recycling receptacles would be located throughout the facility, allowing the proposed project to be in full compliance with waste diversion goals mandated by the California Integrated Waste Management Act.

The amount of solid waste generated by both users of the Performing Arts Center and construction of the facility or infrastructure would not substantially decrease the amount of 192
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 156

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
space in the Altamont Landfill. Solid waste disposal off-site would comply with all local, State, and federal requirements.

Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to utilities and service systems beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

West Yost. 2016. 2015 Urban Water Management Plan. June. Available online at:
www.dsrsd.com/about-us/library/plans-studies (accessed June 12, 2022).

West Yost. 2019. 2017 Wastewater Collection System Master Plan. December. Available online at: www.dsrsd.com/about-us/library/plans-studies (accessed June 12, 2022).

West Yost. 2021. 2020 Urban Water Management Plan. June. Available online at:
www.dsrsd.com/about-us/library/plans-studies (accessed June 12, 2022).

193
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 157

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Wildfire

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

18. WILDFIRE. If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project:
a) Substantially impair an adopted emergency response
plan or emergency evacuation plan?
X
b) Due to slope, prevailing winds, and other factors,
exacerbate wildfire risks, and thereby expose project
occupants to, pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire?
X
c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency
water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
X
d) Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a
result of runoff, post-fire slope instability, or drainage changes?
X
Environmental Setting
The site is within the Diablo Range, an elongated system of northwest trending mountains, hills, ridges, and narrow intervening valleys formed within the Coast Ranges of Central California.

The Diablo Range is part of the Coast Range Geomorphic province and is roughly parallel to the northwest-trending trace of the Calaveras Fault. The west-trending Dublin Canyon, cuts through the foothills with numerous creeks and small streams originating in the East Bay hills.

As described in Section 8, Hazards and Hazardous Materials, a portion of the project site is located within a moderate Fire Hazard Severity Zone within a SRA, as mapped by CAL FIRE.

Previous CEQA Documents
The Eastern Dublin EIR did not specifically analyze impacts for wildfires as it was not a separate topic for analysis when the Eastern Dublin EIR was completed. Public services impacts and mitigation measures, some of which relate to the provision of fire services pertain to wildfires, were identified. The following mitigation measure would apply to the proposed project:

MM 3.5/9.0 Incorporate DRFA recommendations on project design related to access, water pressure, fire safety and prevention into the requirements for development 194
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 158

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
approval. Required that the following DRFA design standards are incorporated where appropriate:
 Use of non-combustible roof materials in all new construction.  Available capacity of 1,000 gallons per minute (gpm) at 20 pounds per square inch (PSI) fire flow from project fire hydrants on public water mains. For groupings of one-family and small two-family dwellings not exceeding two stories in height, the fire flow requirements are a minimum of 1,000 gpm. Fire flow requirements for all other buildings will be calculated based on building size, type of construction, and location.
 A buffer zone along the backs of homes which are contiguous with the wildland are. This buffer zone is to be landscaped with irrigated (wet banding) or equivalent fire-resistive vegetation.
 Compliance with DRFA minimum road widths, maximum street slopes, parking recommendations, and secondary access road requirements.  Require residential structures outside the DRFA’s established response time and zone to include fire alarm systems and sprinklers.

Project Impacts and Mitigation Measures
(a) Impair an emergency response plan
No New Impact. A portion of the project site is located within a moderate Fire Hazard Severity Zone within an SRA as mapped by CALFIRE. However, as outlined in the Project Description, the proposed project would provide a new facility to host previously existing events for Quarry Lane School and would not include any growth in total student enrollment or an expansion of existing school operations. The proposed project would not alter or block adjacent roadways, and implementation of the proposed project would not be expected to impair the function of nearby emergency evacuation routes. In addition, operation of the proposed project would not cause permanent alterations to vehicle circulation routes and patterns or impede public access or travel upon public rights-of-way. As part of Site Design Review, plan review and approval by the Alameda County Fire District is required. Internal roadways and ingress/egress would be required to meet State and local standards regarding turning radius, road width, and emergency vehicle access. In the event of an emergency on the site, employees, students, and/or school visitors could exit the site off Tassajara Road. Once off the project site, employees, students, and/or school visitors could access I-580 from Tassajara Road to exit the City and region.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts related to impairment of 195
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 159

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
an emergency response plan beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(b) Exposure to wildfire
No New Impact. The project site is relatively flat with expansive rolling hills located to the east.

Prevailing winds are typically from the west between February and November and from the north from November to February in the City.

Construction of the proposed project would involve the use of some flammable materials such as gasoline, diesel fuel, hydraulic oils, paints, solvents, or other wastes. During construction, there would be increased human activity and ignition sources, including equipment that could create spark, be a source of heat, or leak flammable materials on the project site. However, all construction equipment is required to have fire suppression equipment (such as a fire extinguisher) on board or at the work site, secondary containment would be required for fuel- powered equipment, and a spill kit would be required to be kept on-site during construction for use in case of any leaks or spills of flammable materials. These existing requirements would reduce the potential exacerbation of wildfire risks related to construction activities.

The operation of the proposed project would be consistent with surrounding uses and allowable zoning for the project site. The project would be required to comply with the Uniform Fire Code (Section 6.04 of the County Ordinance Code) and the Building Code (Title 15), which call for the installation, maintenance, and ongoing inspection of fire protection systems under the direction of the local Fire Chief. In addition, the Uniform Fire Code authorizes the Fire Chief to specify water supply and road design standards. As part of Site Design Review, plan review and approval by the Alameda County Fire District would be required.

The proposed project would also be subject to requirements in Section 13000 et seq. of the California Health and Safety Code, California Building Standards Code, and California State Fire Code, which include regulations concerning the following: building standards for fire protection; fire protection and notification systems such as extinguishers and smoke alarms; safety for firefighters and emergency responders during emergency operations; minimum standards for hazardous vegetation and fuel management, defensible space, and building construction; and minimum standards for emergency access and water supply for fire response.

Compliance with these existing regulatory requirements would ensure that the proposed project would not exacerbate wildfire risks, and thereby expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire.

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
standards for supplemental review are met. Therefore, no further environmental review is required.
(c) Require installation or maintenance of infrastructure No New Impact. As discussed above, a portion of the project site is located within a moderate Fire Hazard Severity Zone within an SRA as mapped by CALFIRE. However, all proposed project components including infrastructure, would be located within the boundaries of the project site and impacts associated with the development of the proposed project within the project site have been analyzed herein. Additionally, through Site Development Review, emergency services would review proposed plans to ensure that emergency vehicle access and circulation is adequate. Therefore, the proposed project would not require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment.

The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements, there would be no new impacts related to installation or maintenance of infrastructure beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.
(d) Exposure to flooding or landslides
No New Impact. Construction of the proposed project would be required to obtain coverage under the National Pollutant Discharge Elimination System (NPDES) General Construction stormwater permit. As discussed in Section 4.10, Hydrology and Water Quality, the proposed project would implement a Stormwater Pollution and Prevention Plan (SWPPP) that specifies Best Management Practices (BMPs) and erosion control measures to be used during construction to manage runoff flows. Additionally, the proposed project would be required to implement Low Impact Development (LID) techniques as required by the Municipal Regional Stormwater NPDES Permit (MRP) and, as detailed in Section 4.10, would not significantly alter drainage patterns compared to existing conditions. Furthermore, the project site is not located within a flood zone or within an area identified as having potential for landslides. Therefore, the proposed project would not have the potential to expose people or structures to downslope or downstream flooding or landslides.

Therefore, no further environmental review is required. 197
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 161

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Conclusion
The project does not propose substantial changes that were not previously analyzed in the Eastern Dublin EIR that would require major changes to the Eastern Dublin EIR. Based on the information in the Eastern Dublin EIR and this environmental analysis, with adherence to applicable regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, there would be no new impacts to wildfire beyond what has been analyzed in the previous Eastern Dublin EIR, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required.

Source(s)
CAL FIRE. 2020. California Fire Hazard Severity Zone Viewer. Website: egis.fire.ca.gov/FHSZ/ (accessed April 3, 2023).

Dublin, City of. 2017. City of Dublin General Plan, Adopted February 11, 1985 (Amended as of November 21, 2017).

Wallace Roberts & Todd. 2016. Eastern Dublin Specific Plan. January 7, 1994 (Updated September 20, 2016).

Wallace Roberts & Todd. 1992. Final Environmental Impact Report, State Clearinghouse Number 91103064. Eastern Dublin General Plan Amendment and Specific Plan.

December 7.

198
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 162

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Mandatory Findings of Significance

ENVIRONMENTAL IMPACTS
Issues
Potentially
Significant
Issues
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No
New
Impact

18. MANDATORY FINDINGS OF SIGNIFICANCE. Does the project:
a) Have the potential to degrade the quality of the
environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or
restrict the range of a rare or endangered plant or
animal or eliminate important examples of the major
periods of California history or prehistory?
X
b) Have impacts that are individually limited, but
cumulatively considerable? ("Cumulatively
considerable" means that the incremental effects of a
project are considerable when viewed in connection
with the effects of the past projects, the effects of other current projects, and the effects of probable future
projects.)
X
c) Have environmental effects which will cause substantial adverse effects on human beings, either directly or
indirectly?
X
Significant Impacts
(a) Degrade quality of environment, reduce habitat, cause population to drop below self- sustaining levels, reduce endangered animals or plants, or eliminate important examples of California history or prehistory.

No New Impact. As discussed, and analyzed in this document, the proposed project would not degrade the quality of the environment. For reasons discussed in Section 4. Biological Resources, the proposed project, would not substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, or reduce the number or restrict the range of a rare or endangered plant or animal, with the implementation of the mitigation measures identified in the Eastern Dublin EIR and adherence to applicable regulatory requirements.

Further, for the reasons discussed in Section 5. Cultural Resources, the proposed project, with implementation of the mitigation identified in the Eastern Dublin EIR, would not eliminate important examples of California history or prehistory.

Implementation of the proposed project, with compliance with regulatory requirements and mitigation measures identified in the Eastern Dublin EIR, would not result in any new impacts or 199
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Page 163

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
increase the severity of a previously identified significant impacts to biological or cultural resources as previously analyzed, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required for this impact area. (b) Cumulative Impacts
No New Impact. The proposed project has the potential to result in incremental environmental impacts that are part of a series of approvals that were anticipated under the Eastern Dublin EIR. The Eastern Dublin EIR considered the project’s cumulatively considerable impacts where effects had the potential to degrade the quality of the environment as a result of build-out of the EDSP. Implementation of the proposed project, with compliance with regulatory requirements and required mitigation measures, would not result in any new cumulative impacts or increase the severity of a previously identified significant cumulative impact as previously analyzed, and no other CEQA standards for supplemental review are met. Therefore, no further environmental review is required for this impact area. (c) Substantial Adverse Effects on Human Beings
Less Than Significant with Mitigation Incorporated. As discussed and analyzed in this document, environmental impacts (including those that may have a direct or indirect adverse effect on humans [i.e., air quality, noise]) that are associated with the proposed project can be reduced to less than significant through implementation of mitigation measures identified in the Eastern Dublin EIR or project specific measures recommended in this document to address construction-related pollutant concentrations and vibration (Project-Specific MM AIR-1 and MM NOI-1). Therefore, the proposed project would not result in environmental effects that would cause a substantial adverse effect on human beings either directly or indirectly.

Therefore, implementation of the proposed project would not increase the severity of a previously identified significant impact as previously analyzed. 200
City of Dublin Quarry Lane School Performing Arts Center Supplemental Mitigated Negative Declaration/Initial Study | Appendices

QuarryLn_PubRev Draft IS_063023_v2.docx (6/29/23)
Appendix A
CalEEMod Output Sheets

201
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 1 / 79
Quarry Lane School Performing Arts Center Detailed Report Table of Contents

1. Basic Project Information

1.1. Basic Project Information

1.2. Land Use Types

1.3. User-Selected Emission Reduction Measures by Emissions Sector

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds

2.2. Construction Emissions by Y ear, Unmitigated

2.3. Construction Emissions by Y ear, Mitigated

2.4. Operations Emissions Compared Against Thresholds

2.5. Operations Emissions by Sector, Unmitigated

2.6. Operations Emissions by Sector, Mitigated

3. Construction Emissions Details

3.1. Demolition (2023) - Unmitigated

3.2. Demolition (2023) - Mitigated
202
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 2 / 79

3.3. Site Preparation (2023) - Unmitigated

3.4. Site Preparation (2023) - Mitigated

3.5. Grading (2023) - Unmitigated

3.6. Grading (2023) - Mitigated

3.7. Building Construction (2023) - Unmitigated

3.8. Building Construction (2023) - Mitigated

3.9. Building Construction (2024) - Unmitigated

3.10. Building Construction (2024) - Mitigated

3.11. Paving (2024) - Unmitigated

3.12. Paving (2024) - Mitigated

3.13. Architectural Coating (2024) - Unmitigated

3.14. Architectural Coating (2024) - Mitigated

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated

4.1.2. Mitigated

4.2. Energy
203
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 3 / 79

4.2.1. Electricity Emissions By Land Use - Unmitigated

4.2.2. Electricity Emissions By Land Use - Mitigated

4.2.3. Natural Gas Emissions By Land Use - Unmitigated

4.2.4. Natural Gas Emissions By Land Use - Mitigated

4.3. Area Emissions by Source

4.3.2. Unmitigated

4.3.1. Mitigated

4.4. Water Emissions by Land Use

4.4.2. Unmitigated

4.4.1. Mitigated

4.5. Waste Emissions by Land Use

4.5.2. Unmitigated

4.5.1. Mitigated

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated

4.6.2. Mitigated

4.7. Offroad Emissions By Equipment Type
204
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 4 / 79

4.7.1. Unmitigated

4.7.2. Mitigated

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated

4.8.2. Mitigated

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated

4.9.2. Mitigated

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated

4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated

4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated

4.10.6. Avoided and Sequestered Emissions by Species - Mitigated

5. Activity Data

5.1. Construction Schedule
205
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 5 / 79

5.2. Off-Road Equipment

5.2.1. Unmitigated

5.2.2. Mitigated

5.3. Construction Vehicles

5.3.1. Unmitigated

5.3.2. Mitigated

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies

5.5. Architectural Coatings

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities

5.6.2. Construction Earthmoving Control Strategies

5.7. Construction Paving

5.8. Construction Electricity Consumption and Emissions Factors

5.9. Operational Mobile Sources

5.9.1. Unmitigated

5.9.2. Mitigated
206
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 6 / 79

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

5.10.1.2. Mitigated

5.10.2. Architectural Coatings

5.10.3. Landscape Equipment

5.10.4. Landscape Equipment - Mitigated

5.11. Operational Energy Consumption

5.11.1. Unmitigated

5.11.2. Mitigated

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated

5.12.2. Mitigated

5.13. Operational Waste Generation

5.13.1. Unmitigated

5.13.2. Mitigated

5.14. Operational Refrigeration and Air Conditioning Equipment 207
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 7 / 79

5.14.1. Unmitigated

5.14.2. Mitigated

5.15. Operational Off-Road Equipment

5.15.1. Unmitigated

5.15.2. Mitigated

5.16. Stationary Sources

5.16.1. Emergency Generators and Fire Pumps

5.16.2. Process Boilers

5.17. User Defined

5.18. Vegetation

5.18.1. Land Use Change

5.18.1.1. Unmitigated

5.18.1.2. Mitigated

5.18.1. Biomass Cover Type

5.18.1.1. Unmitigated

5.18.1.2. Mitigated

5.18.2. Sequestration
208
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 8 / 79

5.18.2.1. Unmitigated

5.18.2.2. Mitigated

6. Climate Risk Detailed Report

6.1. Climate Risk Summary

6.2. Initial Climate Risk Scores

6.3. Adjusted Climate Risk Scores

6.4. Climate Risk Reduction Measures

7. Health and Equity Details

7.1. CalEnviroScreen 4.0 Scores

7.2. Healthy Places Index Scores

7.3. Overall Health & Equity Scores

7.4. Health & Equity Measures

7.5. Evaluation Scorecard

7.6. Health & Equity Custom Measures

8. User Changes to Default Data
209
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 9 / 79

1. Basic Project Information

1.1. Basic Project Information
Data Field Value
Project Name Quarry Lane School Performing Arts Center
Lead Agency —
Land Use Scale Project/site
Analysis Level for Defaults County
Windspeed (m/s) 3.00
Precipitation (days) 14.8
Location 6363 Tassajara Rd, Dublin, CA 94568, USA
County Alameda
City Dublin
Air District Bay Area AQMD
Air Basin San Francisco Bay Area
TAZ 1677
EDFZ 1
Electric Utility Pacific Gas & Electric Company
Gas Utility Pacific Gas & Electric

1.2. Land Use Types
Land Use Subtype Size Unit Lot Acreage Building Area (sq ft) Landscape Area (sq ft)
Special Landscape
Area (sq ft)
Population Description
Elementary School 13.8 1000sqft 0.32 13,800 3,460 3,460 — — Parking Lot 126 Space 1.13 0.00 0.00 — — —
210
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 10 / 79

1.3. User-Selected Emission Reduction Measures by Emissions Sector Sector # Measure Title
Construction C-6 Use Diesel Particulate Filters

2. Emissions Summary

2.1. Construction Emissions Compared Against Thresholds Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.50 15.8 13.5 10.7 0.02 0.55 0.10 0.62 0.51 0.02 0.53 — 1,914 1,914 0.08 0.03 0.47 1,923 Mit. 0.50 15.8 13.5 10.7 0.02 0.08 0.10 0.16 0.08 0.02 0.09 — 1,914 1,914 0.08 0.03 0.47 1,923 %
Reduced
— — — — — 85% — 75% 85% — 82% — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.70 15.8 20.5 15.3 0.03 0.67 3.17 3.75 0.62 1.44 1.97 — 3,795 3,795 0.17 0.22 0.08 3,864 Mit. 0.70 15.8 20.5 15.3 0.03 0.11 3.17 3.28 0.10 1.44 1.54 — 3,795 3,795 0.17 0.22 0.08 3,864 %
Reduced
— — — — — 84% — 13% 84% — 22% — — — — — — —
Average
Daily
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.26 0.69 6.86 5.46 0.01 0.28 0.23 0.34 0.26 0.10 0.27 — 968 968 0.04 0.02 0.11 973 Mit. 0.26 0.69 6.86 5.46 0.01 0.04 0.23 0.25 0.04 0.10 0.12 — 968 968 0.04 0.02 0.11 973 %
Reduced
— — — — — 85% — 26% 85% — 57% — — — — — — —
211
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 11 / 79
Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.05 0.13 1.25 1.00 < 0.005 0.05 0.04 0.06 0.05 0.02 0.05 — 160 160 0.01 < 0.005 0.02 161 Mit. 0.05 0.13 1.25 1.00 < 0.005 0.01 0.04 0.05 0.01 0.02 0.02 — 160 160 0.01 < 0.005 0.02 161 %
Reduced
— — — — — 85% — 26% 85% — 57% — — — — — — —

2.2. Construction Emissions by Y ear, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Y ear TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2024 0.50 15.8 13.5 10.7 0.02 0.55 0.10 0.62 0.51 0.02 0.53 — 1,914 1,914 0.08 0.03 0.47 1,923 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2023 0.70 0.66 20.5 15.3 0.03 0.67 3.17 3.75 0.62 1.44 1.97 — 3,795 3,795 0.17 0.22 0.08 3,864 2024 0.50 15.8 13.5 10.7 0.02 0.55 0.06 0.62 0.51 0.02 0.53 — 1,910 1,910 0.08 0.03 0.01 1,919 Average
Daily
— — — — — — — — — — — — — — — — — —
2023 0.11 0.10 3.17 2.42 < 0.005 0.10 0.23 0.34 0.10 0.10 0.20 — 498 498 0.02 0.02 0.11 504 2024 0.26 0.69 6.86 5.46 0.01 0.28 0.03 0.32 0.26 0.01 0.27 — 968 968 0.04 0.01 0.09 973 Annual — — — — — — — — — — — — — — — — — —
2023 0.02 0.02 0.58 0.44 < 0.005 0.02 0.04 0.06 0.02 0.02 0.04 — 82.5 82.5 < 0.005 < 0.005 0.02 83.5 2024 0.05 0.13 1.25 1.00 < 0.005 0.05 0.01 0.06 0.05 < 0.005 0.05 — 160 160 0.01 < 0.005 0.01 161

2.3. Construction Emissions by Y ear, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 212
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 12 / 79
Y ear TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily -
Summer
(Max)
— — — — — — — — — — — — — — — — — —
2024 0.50 15.8 13.5 10.7 0.02 0.08 0.10 0.16 0.08 0.02 0.09 — 1,914 1,914 0.08 0.03 0.47 1,923 Daily -
Winter
(Max)
— — — — — — — — — — — — — — — — — —
2023 0.70 0.66 20.5 15.3 0.03 0.11 3.17 3.28 0.10 1.44 1.54 — 3,795 3,795 0.17 0.22 0.08 3,864 2024 0.50 15.8 13.5 10.7 0.02 0.08 0.06 0.15 0.08 0.02 0.09 — 1,910 1,910 0.08 0.03 0.01 1,919 Average
Daily
— — — — — — — — — — — — — — — — — —
2023 0.11 0.10 3.17 2.42 < 0.005 0.02 0.23 0.25 0.02 0.10 0.12 — 498 498 0.02 0.02 0.11 504 2024 0.26 0.69 6.86 5.46 0.01 0.04 0.03 0.08 0.04 0.01 0.05 — 968 968 0.04 0.01 0.09 973 Annual — — — — — — — — — — — — — — — — — —
2023 0.02 0.02 0.58 0.44 < 0.005 < 0.005 0.04 0.05 < 0.005 0.02 0.02 — 82.5 82.5 < 0.005 < 0.005 0.02 83.5 2024 0.05 0.13 1.25 1.00 < 0.005 0.01 0.01 0.01 0.01 < 0.005 0.01 — 160 160 0.01 < 0.005 0.01 161

2.4. Operations Emissions Compared Against Thresholds
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Un/Mit. TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.11 0.44 0.01 0.60 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 62.6 73.0 1.05 < 0.005 0.05 100 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.00 0.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.4 60.1 70.5 1.05 < 0.005 0.05 97.9 213
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 13 / 79
——————————————————Average
Daily
(Max)
Unmit. 0.05 0.39 < 0.005 0.30 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 61.3 71.7 1.05 < 0.005 0.05 99.1 Annual
(Max)
— — — — — — — — — — — — — — — — — —
Unmit. 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 1.73 10.2 11.9 0.17 < 0.005 0.01 16.4

2.5. Operations Emissions by Sector, Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.11 0.44 0.01 0.60 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.47 2.47 < 0.005 < 0.005 — 2.48 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05
Total 0.11 0.44 0.01 0.60 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 62.6 73.0 1.05 < 0.005 0.05 100 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area — 0.34 — — — — — — — — — — — — — — — —
Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05214
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 14 / 79
Total 0.00 0.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.4 60.1 70.5 1.05 < 0.005 0.05 97.9 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.05 0.39 < 0.005 0.30 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.22 1.22 < 0.005 < 0.005 — 1.22 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05
Total 0.05 0.39 < 0.005 0.30 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 61.3 71.7 1.05 < 0.005 0.05 99.1 Annual — — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.20 0.20 < 0.005 < 0.005 — 0.20 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 9.67 9.67 < 0.005 < 0.005 — 9.77 Water — — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83 Waste — — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60 Refrig. — — — — — — — — — — — — — — — — 0.01 0.01
Total 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 1.73 10.2 11.9 0.17 < 0.005 0.01 16.4

2.6. Operations Emissions by Sector, Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Sector TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.11 0.44 0.01 0.60 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.47 2.47 < 0.005 < 0.005 — 2.48 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 215
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 15 / 79
Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05
Total 0.11 0.44 0.01 0.60 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 62.6 73.0 1.05 < 0.005 0.05 100 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area — 0.34 — — — — — — — — — — — — — — — —
Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05
Total 0.00 0.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.4 60.1 70.5 1.05 < 0.005 0.05 97.9 Average
Daily
— — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.05 0.39 < 0.005 0.30 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 1.22 1.22 < 0.005 < 0.005 — 1.22 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 58.4 58.4 0.01 < 0.005 — 59.0 Water — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Waste — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Refrig. — — — — — — — — — — — — — — — — 0.05 0.05
Total 0.05 0.39 < 0.005 0.30 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 10.4 61.3 71.7 1.05 < 0.005 0.05 99.1 Annual — — — — — — — — — — — — — — — — — —
Mobile 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Area 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.20 0.20 < 0.005 < 0.005 — 0.20 Energy 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 9.67 9.67 < 0.005 < 0.005 — 9.77 Water — — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83 Waste — — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60216 Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 16 / 79
Refrig. — — — — — — — — — — — — — — — — 0.01 0.01
Total 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 0.00 < 0.005 < 0.005 0.00 < 0.005 1.73 10.2 11.9 0.17 < 0.005 0.01 16.4

3. Construction Emissions Details

3.1. Demolition (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.61 0.61 19.6 14.6 0.02 0.66 — 0.66 0.61 — 0.61 — 2,494 2,494 0.10 0.02 — 2,502 Demolitio
n
— — — — — — 0.20 0.20 — 0.03 0.03 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 1.07 0.80 < 0.005 0.04 — 0.04 0.03 — 0.03 — 137 137 0.01 < 0.005 — 137 Demolitio
n
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.20 0.15 < 0.005 0.01 — 0.01 0.01 — 0.01 — 22.6 22.6 < 0.005 < 0.005 — 22.7 217
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 17 / 79
Demolitio — — — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.05 0.49 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 104 104 < 0.005 < 0.005 0.01 106 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.02 0.01 0.34 0.13 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 261 261 0.02 0.04 0.01 273 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 5.76 5.76 < 0.005 < 0.005 0.01 5.84 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 14.3 14.3 < 0.005 < 0.005 0.01 15.0 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.95 0.95 < 0.005 < 0.005 < 0.005 0.97 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.37 2.37 < 0.005 < 0.005 < 0.005 2.48

3.2. Demolition (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
218
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 18 / 79
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.61 0.61 19.6 14.6 0.02 0.10 — 0.10 0.09 — 0.09 — 2,494 2,494 0.10 0.02 — 2,502 Demolitio
n
— — — — — — 0.20 0.20 — 0.03 0.03 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 1.07 0.80 < 0.005 0.01 — 0.01 0.01 — 0.01 — 137 137 0.01 < 0.005 — 137 Demolitio
n
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.20 0.15 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 22.6 22.6 < 0.005 < 0.005 — 22.7 Demolitio
n
— — — — — — < 0.005 < 0.005 — < 0.005 < 0.005 — — — — — — — Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.05 0.05 0.49 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 104 104 < 0.005 < 0.005 0.01 106 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 219
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 19 / 79
Hauling 0.02 0.01 0.34 0.13 < 0.005 < 0.005 0.02 0.02 < 0.005 0.01 0.01 — 261 261 0.02 0.04 0.01 273 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.03 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 5.76 5.76 < 0.005 < 0.005 0.01 5.84 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 14.3 14.3 < 0.005 < 0.005 0.01 15.0 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.95 0.95 < 0.005 < 0.005 < 0.005 0.97 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 2.37 2.37 < 0.005 < 0.005 < 0.005 2.48

3.3. Site Preparation (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.46 0.46 15.6 11.9 0.02 0.45 — 0.45 0.41 — 0.41 — 2,063 2,063 0.08 0.02 — 2,070 Dust
From
Material
Movement
— — — — — — 2.44 2.44 — 1.17 1.17 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
220
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 20 / 79
Off-Road
Equipment

0.01 0.01 0.21 0.16 < 0.005 0.01 — 0.01 0.01 — 0.01 — 28.3 28.3 < 0.005 < 0.005 — 28.4 Dust
From
Material
Movement
— — — — — — 0.03 0.03 — 0.02 0.02 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.04 0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.68 4.68 < 0.005 < 0.005 — 4.70 Dust
From
Material
Movement
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.03 0.03 0.03 0.30 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 62.6 62.6 < 0.005 < 0.005 0.01 63.4 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.86 0.86 < 0.005 < 0.005 < 0.005 0.88 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
221
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 21 / 79
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.14 0.14 < 0.005 < 0.005 < 0.005 0.15 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.4. Site Preparation (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.46 0.46 15.6 11.9 0.02 0.07 — 0.07 0.06 — 0.06 — 2,063 2,063 0.08 0.02 — 2,070 Dust
From
Material
Movement
— — — — — — 2.44 2.44 — 1.17 1.17 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.21 0.16 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 28.3 28.3 < 0.005 < 0.005 — 28.4 Dust
From
Material
Movement
— — — — — — 0.03 0.03 — 0.02 0.02 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — — 222
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 22 / 79
Off-Road
Equipment
< 0.005 < 0.005 0.04 0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.68 4.68 < 0.005 < 0.005 — 4.70 Dust
From
Material
Movement
— — — — — — 0.01 0.01 — < 0.005 < 0.005 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.03 0.03 0.03 0.30 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 62.6 62.6 < 0.005 < 0.005 0.01 63.4 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.86 0.86 < 0.005 < 0.005 < 0.005 0.88 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.14 0.14 < 0.005 < 0.005 < 0.005 0.15 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.5. Grading (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 223
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 23 / 79
Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.56 0.56 18.8 14.2 0.02 0.55 — 0.55 0.51 — 0.51 — 2,453 2,453 0.10 0.02 — 2,462 Dust
From
Material
Movement
— — — — — — 2.77 2.77 — 1.34 1.34 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 1.03 0.78 < 0.005 0.03 — 0.03 0.03 — 0.03 — 134 134 0.01 < 0.005 — 135 Dust
From
Material
Movement
— — — — — — 0.15 0.15 — 0.07 0.07 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.19 0.14 < 0.005 0.01 — 0.01 0.01 — 0.01 — 22.3 22.3 < 0.005 < 0.005 — 22.3 Dust
From
Material
Movement
— — — — — — 0.03 0.03 — 0.01 0.01 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
224
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 24 / 79
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.04 0.04 0.39 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 83.5 83.5 < 0.005 < 0.005 0.01 84.6 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.10 0.03 1.65 0.63 0.01 0.02 0.09 0.11 0.02 0.03 0.05 — 1,258 1,258 0.07 0.20 0.07 1,318 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 4.60 4.60 < 0.005 < 0.005 0.01 4.67 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.01 < 0.005 0.09 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 68.9 68.9 < 0.005 0.01 0.06 72.3 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.76 0.76 < 0.005 < 0.005 < 0.005 0.77 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 11.4 11.4 < 0.005 < 0.005 0.01 12.0

3.6. Grading (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.56 0.56 18.8 14.2 0.02 0.08 — 0.08 0.08 — 0.08 — 2,453 2,453 0.10 0.02 — 2,462 225
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 25 / 79
Dust
From
Material
Movement
— — — — — — 2.77 2.77 — 1.34 1.34 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 1.03 0.78 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 134 134 0.01 < 0.005 — 135 Dust
From
Material
Movement
— — — — — — 0.15 0.15 — 0.07 0.07 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.19 0.14 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 22.3 22.3 < 0.005 < 0.005 — 22.3 Dust
From
Material
Movement
— — — — — — 0.03 0.03 — 0.01 0.01 — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.04 0.04 0.04 0.39 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 83.5 83.5 < 0.005 < 0.005 0.01 84.6 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.10 0.03 1.65 0.63 0.01 0.02 0.09 0.11 0.02 0.03 0.05 — 1,258 1,258 0.07 0.20 0.07 1,318226 Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 26 / 79
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 4.60 4.60 < 0.005 < 0.005 0.01 4.67 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.01 < 0.005 0.09 0.03 < 0.005 < 0.005 0.01 0.01 < 0.005 < 0.005 < 0.005 — 68.9 68.9 < 0.005 0.01 0.06 72.3 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.76 0.76 < 0.005 < 0.005 < 0.005 0.77 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling < 0.005 < 0.005 0.02 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 11.4 11.4 < 0.005 < 0.005 0.01 12.0

3.7. Building Construction (2023) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.55 — 0.55 0.51 — 0.51 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 0.73 0.57 < 0.005 0.03 — 0.03 0.03 — 0.03 — 98.7 98.7 < 0.005 < 0.005 — 99.0 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
227
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 27 / 79
Off-Road
Equipment
< 0.005 < 0.005 0.13 0.10 < 0.005 0.01 — 0.01 0.01 — 0.01 — 16.3 16.3 < 0.005 < 0.005 — 16.4 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.23 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 48.4 48.4 < 0.005 < 0.005 0.01 49.0 Vendor < 0.005 < 0.005 0.08 0.04 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 62.0 62.0 < 0.005 0.01 < 0.005 64.8 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 2.67 2.67 < 0.005 < 0.005 0.01 2.71 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 3.40 3.40 < 0.005 < 0.005 < 0.005 3.55 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.44 0.44 < 0.005 < 0.005 < 0.005 0.45 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.56 0.56 < 0.005 < 0.005 < 0.005 0.59 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.8. Building Construction (2023) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
228
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 28 / 79
——————————————————Daily,
Summer
(Max)
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.08 — 0.08 0.08 — 0.08 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.03 0.03 0.73 0.57 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 98.7 98.7 < 0.005 < 0.005 — 99.0 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.13 0.10 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 16.3 16.3 < 0.005 < 0.005 — 16.4 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.23 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 48.4 48.4 < 0.005 < 0.005 0.01 49.0 Vendor < 0.005 < 0.005 0.08 0.04 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 62.0 62.0 < 0.005 0.01 < 0.005 64.8 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
229
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 29 / 79
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 2.67 2.67 < 0.005 < 0.005 0.01 2.71 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 3.40 3.40 < 0.005 < 0.005 < 0.005 3.55 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.44 0.44 < 0.005 < 0.005 < 0.005 0.45 Vendor < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 0.56 0.56 < 0.005 < 0.005 < 0.005 0.59 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.9. Building Construction (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.55 — 0.55 0.51 — 0.51 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.55 — 0.55 0.51 — 0.51 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.23 0.23 6.55 5.12 0.01 0.27 — 0.27 0.25 — 0.25 — 881 881 0.04 0.01 — 884 230
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 30 / 79

0.000.000.000.000.000.00—0.000.000.000.000.000.000.000.000.000.000.00Onsite truck
Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.04 0.04 1.20 0.94 < 0.005 0.05 — 0.05 0.05 — 0.05 — 146 146 0.01 < 0.005 — 146 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.01 0.24 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 51.2 51.2 < 0.005 < 0.005 0.22 52.0 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 61.2 61.2 < 0.005 0.01 0.16 64.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.21 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 47.5 47.5 < 0.005 < 0.005 0.01 48.1 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 61.3 61.3 < 0.005 0.01 < 0.005 64.1 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.10 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 23.4 23.4 < 0.005 < 0.005 0.05 23.7 Vendor < 0.005 < 0.005 0.04 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 30.0 30.0 < 0.005 < 0.005 0.03 31.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 3.87 3.87 < 0.005 < 0.005 0.01 3.93 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.96 4.96 < 0.005 < 0.005 0.01 5.19 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 231
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 31 / 79

3.10. Building Construction (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.08 — 0.08 0.08 — 0.08 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.47 0.47 13.4 10.5 0.02 0.08 — 0.08 0.08 — 0.08 — 1,801 1,801 0.07 0.01 — 1,807 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.23 0.23 6.55 5.12 0.01 0.04 — 0.04 0.04 — 0.04 — 881 881 0.04 0.01 — 884 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.04 0.04 1.20 0.94 < 0.005 0.01 — 0.01 0.01 — 0.01 — 146 146 0.01 < 0.005 — 146 Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
232
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 32 / 79
——————————————————Daily,
Summer
(Max)
Worker 0.02 0.02 0.01 0.24 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 51.2 51.2 < 0.005 < 0.005 0.22 52.0 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 61.2 61.2 < 0.005 0.01 0.16 64.2 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.02 0.02 0.02 0.21 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 47.5 47.5 < 0.005 < 0.005 0.01 48.1 Vendor < 0.005 < 0.005 0.08 0.03 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 61.3 61.3 < 0.005 0.01 < 0.005 64.1 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker 0.01 0.01 0.01 0.10 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 23.4 23.4 < 0.005 < 0.005 0.05 23.7 Vendor < 0.005 < 0.005 0.04 0.02 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 30.0 30.0 < 0.005 < 0.005 0.03 31.4 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.02 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 3.87 3.87 < 0.005 < 0.005 0.01 3.93 Vendor < 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 — 4.96 4.96 < 0.005 < 0.005 0.01 5.19 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.11. Paving (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
233
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 33 / 79
995—0.010.04992992—0.34—0.340.36—0.360.016.658.400.310.31Off-Road Equipment
Paving — 0.30 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.01 0.01 0.23 0.18 < 0.005 0.01 — 0.01 0.01 — 0.01 — 27.2 27.2 < 0.005 < 0.005 — 27.3 Paving — 0.01 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.04 0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.50 4.50 < 0.005 < 0.005 — 4.51 Paving — < 0.005 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.04 0.03 0.52 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 110 110 < 0.005 < 0.005 0.47 112 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
234
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 34 / 79
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 2.82 2.82 < 0.005 < 0.005 0.01 2.87 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.47 0.47 < 0.005 < 0.005 < 0.005 0.47 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.12. Paving (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.31 0.31 8.40 6.65 0.01 0.05 — 0.05 0.05 — 0.05 — 992 992 0.04 0.01 — 995 Paving — 0.30 — — — — — — — — — — — — — — — —
Onsite
truck

0.01 0.01 0.23 0.18 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 27.2 27.2 < 0.005 < 0.005 — 27.3 Paving — 0.01 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 235
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 35 / 79
Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.04 0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 4.50 4.50 < 0.005 < 0.005 — 4.51 Paving — < 0.005 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker 0.05 0.04 0.03 0.52 0.00 0.00 0.01 0.01 0.00 0.00 0.00 — 110 110 < 0.005 < 0.005 0.47 112 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.01 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 2.82 2.82 < 0.005 < 0.005 0.01 2.87 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.47 0.47 < 0.005 < 0.005 < 0.005 0.47 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.13. Architectural Coating (2024) - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — — 236
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 36 / 79
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.05 0.05 1.09 0.96 < 0.005 0.07 — 0.07 0.06 — 0.06 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 15.8 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.05 0.05 1.09 0.96 < 0.005 0.07 — 0.07 0.06 — 0.06 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 15.8 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.03 0.03 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 3.66 3.66 < 0.005 < 0.005 — 3.67 Architect
ural
Coatings
— 0.43 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.61 0.61 < 0.005 < 0.005 — 0.61 Architect
ural
Coatings
— 0.08 — — — — — — — — — — — — — — — —
237
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 37 / 79
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Offsite — — — — — — — — — — — — — — — — — —
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.05 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 10.2 10.2 < 0.005 < 0.005 0.04 10.4 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 0.04 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 9.50 9.50 < 0.005 < 0.005 < 0.005 9.62 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Average
Daily
— — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.26 0.26 < 0.005 < 0.005 < 0.005 0.27 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Worker < 0.005 < 0.005 < 0.005 < 0.005 0.00 0.00 < 0.005 < 0.005 0.00 0.00 0.00 — 0.04 0.04 < 0.005 < 0.005 < 0.005 0.04 Vendor 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Hauling 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

3.14. Architectural Coating (2024) - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Location TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Onsite — — — — — — — — — — — — — — — — — —
238
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 38 / 79
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.05 0.05 1.09 0.96 < 0.005 0.01 — 0.01 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 15.8 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Off-Road
Equipment

0.05 0.05 1.09 0.96 < 0.005 0.01 — 0.01 0.01 — 0.01 — 134 134 0.01 < 0.005 — 134 Architect
ural
Coatings
— 15.8 — — — — — — — — — — — — — — — —
Onsite
truck

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Off-Road
Equipment
< 0.005 < 0.005 0.01 < 0.005 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.61 0.61 < 0.005 < 0.005 — 0.61 Architect
ural
Coatings
— 0.08 — — — — — — — — — — — — — — — —
239
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 39 / 79
Onsite
truck

4. Operations Emissions Details

4.1. Mobile Emissions by Land Use

4.1.1. Unmitigated
240
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 40 / 79
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

4.1.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 241
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 41 / 79
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 0.00 0.00 0.00 0.00

4.2. Energy

4.2.1. Electricity Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 242
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 42 / 79
——————————————————Daily,
Summer
(Max)
Element
ary
School
— — — — — — — — — — — — 34.2 34.2 0.01 < 0.005 — 34.6
Parking
Lot
— — — — — — — — — — — — 24.2 24.2 < 0.005 < 0.005 — 24.4 Total — — — — — — — — — — — — 58.4 58.4 0.01 < 0.005 — 59.0 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — 34.2 34.2 0.01 < 0.005 — 34.6
Parking
Lot
— — — — — — — — — — — — 24.2 24.2 < 0.005 < 0.005 — 24.4 Total — — — — — — — — — — — — 58.4 58.4 0.01 < 0.005 — 59.0 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — 5.67 5.67 < 0.005 < 0.005 — 5.72 Parking
Lot
— — — — — — — — — — — — 4.00 4.00 < 0.005 < 0.005 — 4.04 Total — — — — — — — — — — — — 9.67 9.67 < 0.005 < 0.005 — 9.77

4.2.2. Electricity Emissions By Land Use - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
243
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 43 / 79
Element
School
— — — — — — — — — — — — 34.2 34.2 0.01 < 0.005 — 34.6
Parking
Lot
— — — — — — — — — — — — 24.2 24.2 < 0.005 < 0.005 — 24.4 Total — — — — — — — — — — — — 58.4 58.4 0.01 < 0.005 — 59.0 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — 34.2 34.2 0.01 < 0.005 — 34.6
Parking
Lot
— — — — — — — — — — — — 24.2 24.2 < 0.005 < 0.005 — 24.4 Total — — — — — — — — — — — — 58.4 58.4 0.01 < 0.005 — 59.0 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — 5.67 5.67 < 0.005 < 0.005 — 5.72 Parking
Lot
— — — — — — — — — — — — 4.00 4.00 < 0.005 < 0.005 — 4.04 Total — — — — — — — — — — — — 9.67 9.67 < 0.005 < 0.005 — 9.77

4.2.3. Natural Gas Emissions By Land Use - Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 244
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 44 / 79

0.00—0.000.000.000.00—0.00—0.000.00—0.000.000.000.000.000.00Parking Lot
Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00

4.2.4. Natural Gas Emissions By Land Use - Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 245
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 45 / 79
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Parking
Lot

0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00 Total 0.00 0.00 0.00 0.00 0.00 0.00 — 0.00 0.00 — 0.00 — 0.00 0.00 0.00 0.00 — 0.00

4.3. Area Emissions by Source

4.3.2. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Consum
er
Products
— 0.30 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.04 — — — — — — — — — — — — — — — —
246
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 46 / 79

2.48—< 0.005< 0.0052.472.47—< 0.005—< 0.005< 0.005—< 0.005< 0.0050.600.010.100.11Landsca pe
Equipme
Total 0.11 0.44 0.01 0.60 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.47 2.47 < 0.005 < 0.005 — 2.48 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Consum
er
Products
— 0.30 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.04 — — — — — — — — — — — — — — — —
Total — 0.34 — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Consum
er
Products
— 0.05 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.01 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

0.01 0.01 < 0.005 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.20 0.20 < 0.005 < 0.005 — 0.20 Total 0.01 0.07 < 0.005 0.05 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 0.20 0.20 < 0.005 < 0.005 — 0.20

4.3.1. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Source TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
247
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 47 / 79
————————————————0.30—Consum
er
Architect
ural
Coatings
— 0.04 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

0.11 0.10 0.01 0.60 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.47 2.47 < 0.005 < 0.005 — 2.48 Total 0.11 0.44 0.01 0.60 < 0.005 < 0.005 — < 0.005 < 0.005 — < 0.005 — 2.47 2.47 < 0.005 < 0.005 — 2.48 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Consum
er
Products
— 0.30 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.04 — — — — — — — — — — — — — — — —
Total — 0.34 — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Consum
er
Products
— 0.05 — — — — — — — — — — — — — — — —
Architect
ural
Coatings
— 0.01 — — — — — — — — — — — — — — — —
Landsca
pe
Equipme
nt

4.4. Water Emissions by Land Use
248
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 48 / 79

4.4.2. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83

4.4.1. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 249 Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 49 / 79
Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.77 1.69 2.46 0.08 < 0.005 — 4.99 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83 Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 0.13 0.28 0.41 0.01 < 0.005 — 0.83

4.5. Waste Emissions by Land Use

4.5.2. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 250
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 50 / 79
CO2eRN2OCH4CO2TNBCO2BCO2PM2.5TPM2.5DPM2.5EPM10TPM10DPM10ESO2CONOxROGTOGLand Use
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60

4.5.1. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 251
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 51 / 79
——————————————————Daily,
Summer
(Max)
Element
ary
School
— — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 9.67 0.00 9.67 0.97 0.00 — 33.8 Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60
Parking
Lot
— — — — — — — — — — — 0.00 0.00 0.00 0.00 0.00 — 0.00
Total — — — — — — — — — — — 1.60 0.00 1.60 0.16 0.00 — 5.60

4.6. Refrigerant Emissions by Land Use

4.6.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e 252
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 52 / 79
——————————————————Daily,
Summer
(Max)
Element
ary
School
— — — — — — — — — — — — — — — — 0.05 0.05
Total — — — — — — — — — — — — — — — — 0.05 0.05
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — — — — — 0.05 0.05
Total — — — — — — — — — — — — — — — — 0.05 0.05
Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — — — — — 0.01 0.01
Total — — — — — — — — — — — — — — — — 0.01 0.01

4.6.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — — — — — 0.05 0.05
Total — — — — — — — — — — — — — — — — 0.05 0.05
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
253
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 53 / 79
Element
School
— — — — — — — — — — — — — — — — 0.05 0.05
Total — — — — — — — — — — — — — — — — 0.05 0.05
Annual — — — — — — — — — — — — — — — — — —
Element
ary
School
— — — — — — — — — — — — — — — — 0.01 0.01
Total — — — — — — — — — — — — — — — — 0.01 0.01

4.7. Offroad Emissions By Equipment Type

4.7.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.7.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 254
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 54 / 79
CO2eRN2OCH4CO2TNBCO2BCO2PM2.5TPM2.5DPM2.5EPM10TPM10DPM10ESO2CONOxROGTOGEquipme nt
Type
Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.8. Stationary Emissions By Equipment Type

4.8.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
255
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 55 / 79

4.8.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.9. User Defined Emissions By Equipment Type

4.9.1. Unmitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
256
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 56 / 79
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.9.2. Mitigated
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Equipme
nt
Type
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10. Soil Carbon Accumulation By Vegetation Type

4.10.1. Soil Carbon Accumulation By Vegetation Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio
n
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
257
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 57 / 79
——————————————————Daily,
Winter
(Max)
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.2. Above and Belowground Carbon Accumulation by Land Use Type - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.3. Avoided and Sequestered Emissions by Species - Unmitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
258
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 58 / 79
Sequest — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

4.10.4. Soil Carbon Accumulation By Vegetation Type - Mitigated 259
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 59 / 79
Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Vegetatio
n
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.5. Above and Belowground Carbon Accumulation by Land Use Type - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) Land
Use
TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Total — — — — — — — — — — — — — — — — — —

4.10.6. Avoided and Sequestered Emissions by Species - Mitigated Criteria Pollutants (lb/day for daily, ton/yr for annual) and GHGs (lb/day for daily, MT/yr for annual) 260 Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 60 / 79
Species TOG ROG NOx CO SO2 PM10E PM10D PM10T PM2.5E PM2.5D PM2.5T BCO2 NBCO2 CO2T CH4 N2O R CO2e Daily,
Summer
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Daily,
Winter
(Max)
— — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Remove
d
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —
Annual — — — — — — — — — — — — — — — — — —
Avoided — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
Sequest
ered
— — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
261
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 61 / 79
Remove — — — — — — — — — — — — — — — — — —
Subtotal — — — — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — — — — —

5. Activity Data

5.1. Construction Schedule
Phase Name Phase Type Start Date End Date Days Per Week Work Days per Phase Phase Description Demolition Demolition 10/2/2023 10/27/2023 5.00 20.0 —
Site Preparation Site Preparation 10/30/2023 11/3/2023 5.00 5.00 — Grading Grading 11/6/2023 12/1/2023 5.00 20.0 —
Building Construction Building Construction 12/4/2023 9/6/2024 5.00 200 — Paving Paving 9/9/2024 9/20/2024 5.00 10.0 —
Architectural Coating Architectural Coating 9/23/2024 10/4/2024 5.00 10.0 —

5.2. Off-Road Equipment

5.2.1. Unmitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Concrete/Industrial
Saws
Diesel Tier 2 1.00 8.00 33.0 0.73
Demolition Rubber Tired Dozers Diesel Tier 2 1.00 8.00 367 0.40 Demolition Tractors/Loaders/Backh
oes
Diesel Tier 2 3.00 8.00 84.0 0.37
Site Preparation Graders Diesel Tier 2 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Tier 2 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 8.00 84.0 0.37
262
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 62 / 79
Grading Graders Diesel Tier 2 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Tier 2 1.00 8.00 367 0.40 Grading Tractors/Loaders/Backh
oes
Diesel Tier 2 2.00 7.00 84.0 0.37
Building Construction Cranes Diesel Tier 2 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Tier 2 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Tier 2 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 6.00 84.0 0.37
Building Construction Welders Diesel Tier 2 3.00 8.00 46.0 0.45 Paving Cement and Mortar
Mixers
Diesel Tier 2 1.00 6.00 10.0 0.56
Paving Pavers Diesel Tier 2 1.00 6.00 81.0 0.42
Paving Paving Equipment Diesel Tier 2 1.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 2 1.00 7.00 36.0 0.38
Paving Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 8.00 84.0 0.37
Architectural Coating Air Compressors Diesel Tier 2 1.00 6.00 37.0 0.48

5.2.2. Mitigated
Phase Name Equipment Type Fuel Type Engine Tier Number per Day Hours Per Day Horsepower Load Factor Demolition Concrete/Industrial
Saws
Diesel Tier 2 1.00 8.00 33.0 0.73
Demolition Rubber Tired Dozers Diesel Tier 2 1.00 8.00 367 0.40 Demolition Tractors/Loaders/Backh
oes
Diesel Tier 2 3.00 8.00 84.0 0.37
Site Preparation Graders Diesel Tier 2 1.00 8.00 148 0.41 Site Preparation Rubber Tired Dozers Diesel Tier 2 1.00 7.00 367 0.40 Site Preparation Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 8.00 84.0 0.37
263
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 63 / 79
Grading Graders Diesel Tier 2 1.00 8.00 148 0.41
Grading Rubber Tired Dozers Diesel Tier 2 1.00 8.00 367 0.40 Grading Tractors/Loaders/Backh
oes
Diesel Tier 2 2.00 7.00 84.0 0.37
Building Construction Cranes Diesel Tier 2 1.00 6.00 367 0.29 Building Construction Forklifts Diesel Tier 2 1.00 6.00 82.0 0.20 Building Construction Generator Sets Diesel Tier 2 1.00 8.00 14.0 0.74 Building Construction Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 6.00 84.0 0.37
Building Construction Welders Diesel Tier 2 3.00 8.00 46.0 0.45 Paving Cement and Mortar
Mixers
Diesel Tier 2 1.00 6.00 10.0 0.56
Paving Pavers Diesel Tier 2 1.00 6.00 81.0 0.42
Paving Paving Equipment Diesel Tier 2 1.00 8.00 89.0 0.36 Paving Rollers Diesel Tier 2 1.00 7.00 36.0 0.38
Paving Tractors/Loaders/Backh
oes
Diesel Tier 2 1.00 8.00 84.0 0.37
Architectural Coating Air Compressors Diesel Tier 2 1.00 6.00 37.0 0.48

5.3. Construction Vehicles

5.3.1. Unmitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix Demolition — — — —
Demolition Worker 12.5 11.7 LDA,LDT1,LDT2
Demolition Vendor — 8.40 HHDT,MHDT
Demolition Hauling 3.60 20.0 HHDT
Demolition Onsite truck — — HHDT
Site Preparation — — — —
264
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 64 / 79
Site Preparation Worker 7.50 11.7 LDA,LDT1,LDT2
Site Preparation Vendor — 8.40 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 10.0 11.7 LDA,LDT1,LDT2
Grading Vendor — 8.40 HHDT,MHDT
Grading Hauling 17.4 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 5.80 11.7 LDA,LDT1,LDT2
Building Construction Vendor 2.26 8.40 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 12.5 11.7 LDA,LDT1,LDT2
Paving Vendor — 8.40 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 1.16 11.7 LDA,LDT1,LDT2
Architectural Coating Vendor — 8.40 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT

5.3.2. Mitigated
Phase Name Trip Type One-Way Trips per Day Miles per Trip Vehicle Mix 265
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 65 / 79
Demolition — — — —
Demolition Worker 12.5 11.7 LDA,LDT1,LDT2
Demolition Vendor — 8.40 HHDT,MHDT
Demolition Hauling 3.60 20.0 HHDT
Demolition Onsite truck — — HHDT
Site Preparation — — — —
Site Preparation Worker 7.50 11.7 LDA,LDT1,LDT2
Site Preparation Vendor — 8.40 HHDT,MHDT
Site Preparation Hauling 0.00 20.0 HHDT
Site Preparation Onsite truck — — HHDT
Grading — — — —
Grading Worker 10.0 11.7 LDA,LDT1,LDT2
Grading Vendor — 8.40 HHDT,MHDT
Grading Hauling 17.4 20.0 HHDT
Grading Onsite truck — — HHDT
Building Construction — — — —
Building Construction Worker 5.80 11.7 LDA,LDT1,LDT2
Building Construction Vendor 2.26 8.40 HHDT,MHDT
Building Construction Hauling 0.00 20.0 HHDT
Building Construction Onsite truck — — HHDT
Paving — — — —
Paving Worker 12.5 11.7 LDA,LDT1,LDT2
Paving Vendor — 8.40 HHDT,MHDT
Paving Hauling 0.00 20.0 HHDT
Paving Onsite truck — — HHDT
Architectural Coating — — — —
Architectural Coating Worker 1.16 11.7 LDA,LDT1,LDT2
266
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 66 / 79
Architectural Coating Vendor — 8.40 HHDT,MHDT
Architectural Coating Hauling 0.00 20.0 HHDT
Architectural Coating Onsite truck — — HHDT

5.4. Vehicles

5.4.1. Construction Vehicle Control Strategies
Control Strategies Applied PM10 Reduction PM2.5 Reduction Water unpaved roads twice daily 55% 55%
Limit vehicle speeds on unpaved roads to 25 mph 44% 44% Sweep paved roads once per month 9% 9%

5.5. Architectural Coatings
Phase Name Residential Interior Area Coated
(sq ft)
Residential Exterior Area Coated
(sq ft)
Non-Residential Interior Area
Coated (sq ft)
Non-Residential Exterior Area
Coated (sq ft)
Parking Area Coated (sq ft)
Architectural Coating 0.00 0.00 20,700 6,900 2,964

5.6. Dust Mitigation

5.6.1. Construction Earthmoving Activities
Phase Name Material Imported (cy) Material Exported (cy) Acres Graded (acres) Material Demolished (Building Square Footage)
Acres Paved (acres)
Demolition 0.00 0.00 0.00 6,200 —
Site Preparation — — 4.69 0.00 —
Grading — 2,775 20.0 0.00 —
Paving 0.00 0.00 0.00 0.00 1.13
267
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 67 / 79

5.6.2. Construction Earthmoving Control Strategies
Control Strategies Applied Frequency (per day) PM10 Reduction PM2.5 Reduction Water Exposed Area 2 61% 61%
Water Demolished Area 2 36% 36%

5.7. Construction Paving
Land Use Area Paved (acres) % Asphalt
Elementary School 0.00 0%
Parking Lot 1.13 100%

5.8. Construction Electricity Consumption and Emissions Factors kWh per Y ear and Emission Factor (lb/MWh)
Y ear kWh per Y ear CO2 CH4 N2O
2023 0.00 204 0.03 < 0.005
2024 0.00 204 0.03 < 0.005

5.9. Operational Mobile Sources

5.9.1. Unmitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Y ear VMT/Weekday VMT/Saturday VMT/Sunday VMT/Y ear Elementary School 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

5.9.2. Mitigated
Land Use Type Trips/Weekday Trips/Saturday Trips/Sunday Trips/Y ear VMT/Weekday VMT/Saturday VMT/Sunday VMT/Y ear 268
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 68 / 79
Elementary School 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

5.10. Operational Area Sources

5.10.1. Hearths

5.10.1.1. Unmitigated

5.10.1.2. Mitigated

5.10.2. Architectural Coatings
Residential Interior Area Coated (sq ft) Residential Exterior Area Coated (sq ft) Non-Residential Interior Area Coated (sq ft)
Non-Residential Exterior Area Coated
(sq ft)
Parking Area Coated (sq ft)
0 0.00 20,700 6,900 2,964

5.10.3. Landscape Equipment
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 180

5.10.4. Landscape Equipment - Mitigated
Season Unit Value
Snow Days day/yr 0.00
Summer Days day/yr 180

5.11. Operational Energy Consumption
269
Quarry Lane School Performing Arts Center Detailed Report, 1/3/2023 69 / 79

5.11.1. Unmitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Elementary School 61,237 204 0.0330 0.0040 0.00
Parking Lot 43,272 204 0.0330 0.0040 0.00

5.11.2. Mitigated
Electricity (kWh/yr) and CO2 and CH4 and N2O and Natural Gas (kBTU/yr) Land Use Electricity (kWh/yr) CO2 CH4 N2O Natural Gas (kBTU/yr) Elementary School 61,237 204 0.0330 0.0040 0.00
Parking Lot 43,272 204 0.0330 0.0040 0.00

5.12. Operational Water and Wastewater Consumption

5.12.1. Unmitigated
Land Use Indoor Water (gal/year) Outdoor Water (gal/year) Elementary School 400,157 87,356
Parking Lot 0.00 0.00

Dublin City CouncilOctober 3, 2023

Dublin City Council
October 3, 2023