PRFMA Engineer's Report Public Draft 2022 0310.docx 35
PAJARO REGIONAL FLOOD MANAGEMENT AGENCY
Supplemental Operations and Maintenance Assessment
Public Draft Engineer’s Report
March 11, 2022
Figure 1: PRFMA Boundary Map with Benefit Zones
Attachment B
PRFMA Engineer's Report Public Draft 2022 0310.docx
PAJARO REGIONAL FLOOD MANAGEMENT AGENCY
Supplemental Operations and Maintenance Assessment
Public Draft Engineer’s Report
March 11, 2022
Appendix A: Proposed PRFMA Assessment Roll
Provided under separate cover.
Attachment B
Attachment C
Reso No. (CM)
Meeting Date: 011122 1
RESOLUTION NO.__________ (CM)
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
WATSONVILLE AUTHORIZING THE CITY MANAGER PRO TEMPORE
TO VOTE [YES] ON THE CITY’S ASSESSMENT BALLOTS FOR CITYOWNED PARCELS FOR THE PROPOSED ASSESSMENT FOR LEVEE
OPERATIONS AND MAINTENANCE AND RETURN THE BALLOTS TO
THE PAJARO REGIONAL FLOOD MANAGEMENT AGENCY PRIOR TO
ITS PUBLIC HEARING SCHEDULED FOR JUNE 8, 2022
WHEREAS, the County of Santa Cruz, City of Watsonville, County of Monterey, Santa Cruz County Flood Control and Water Conservation District (Zone 7), and Monterey County Water Resources Agency executed a Joint Exercise of Powers Agreement (JPA Agreement) that established the Pajaro Regional Flood Management Agency (PRFMA) on July 21, 2021; and
WHEREAS, the City of Watsonville serves as a Member Agency on the Board of the Pajaro River Flood Management Agency; and
WHEREAS, on April 13, 2022 the PRFMA Board of Directors adopted a resolution of intent to form an assessment district to provide supplemental funding necessary for the levee operations and maintenance, under which 45 City-owned parcels are proposed to be assessed; and
WHEREAS, the US Army Corps of Engineers (USACE), in partnership with PRFMA and the CA Department of Water Resources, has begun design for a $400 million Pajaro River Flood Risk Management Project, which will improve levees along the Pajaro River and Salsipuedes and Corralitos Creeks; and
WHEREAS, upon completion, the project will provide up to 100-year flood protection to Watsonville, Pajaro and surrounding agriculture lands - removing properties from the FEMA Special Flood Hazard Area (SFHA) and ending associated requirements for flood insurance and building restrictions; and
Reso No. (CM)
Meeting Date: 011122 2
WHEREAS, the USACE and state have agreed to pay 100% of the project’s design and construction costs; and
WHEREAS, to receive funding, the local community must agree to maintain levees to strict federal regulations, which requires PRFMA to demonstrate that levee operations and maintenance is adequately funded; and
WHEREAS, PRFMA plans to assume management of levee operations and maintenance on behalf of its member agencies; and
WHEREAS, the proposed annual budget for levee operations and maintenance is $3.8 million per year. Existing assessment revenues from Zone 7 (Santa Cruz County) and Zones 1/1A (Monterey County), along with a contribution from the City of Watsonville, generate $2.6 million per year, leaving an annual operating deficit of $1.2 million per year that needs to be recovered. PRFMA is therefore proposing an annual property assessment to close this gap, and
WHEREAS, under Proposition 218, only properties that benefit from the PRFMA’s levee maintenance activities can be assessed; and
WHEREAS, the City, owns 45 parcels which are proposed to be assessed; and WHEREAS, the City leases APN 017-011-59 from Santa Cruz Metro as part of an existing 99-year lease agreement until 2100 with Santa Cruz Metro; and WHEREAS, the City hereby requests that Santa Cruz Metro vote in support of the benefit assessment.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF WATSONVILLE, CALIFORNIA, AS FOLLOWS:
1. This action is not subject to review under the California Environmental Quality Act (CEQA) pursuant to Public Resources Code Section 21000, et seq. and the
Reso No. (CM)
Meeting Date: 011122 3
CEQA Guidelines (14 Cal. Code Regs. §§ 15000 et. seq.), including without limitation, Public Resources Code section 21065 and California Code of Regulations 15378 as this is not a “project” that may cause a direct, or reasonably foreseeable indirect, physical change in the environment and because the action constitutes organizational or administrative activities of governments that will not result in direct or indirect physical changes in the environment. Additionally, even if a “project,” the action would be exempt under the “common sense” exception (14 Cal. Code Regs. § 15061(b)(3)) because it can be seen with certainty that there is no possibility that this action may have a significant effect on the environment.
2. The City Manager Pro Tempore is hereby authorized and directed to vote [YES] on the City’s assessment ballots for the proposed assessment for levee operations and maintenance and return the ballots to PRFMA prior to its public hearing scheduled for June 8, 2022.
3. The City Council requests that Santa Cruz Metro vote in support of the benefit assessment.
4. The City Manager Pro Tempore is hereby authorized and directed to remit the assessment payment for APN 017-011-59 for Santa Cruz Metro, as Lessor to the property, until the year 2100 as part of an existing 99-year lease agreement with Santa Cruz Metro.
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Agenda Report
MEETING DATE: Tuesday, April 26, 2022
TO: City Council
FROM: COMMUNITY DEVELOPMENT DIRECTOR MERRIAM
SUBJECT: ORDINANCE ESTABLISHING A DEVELOPMENT AGREEMENT FOR THE HILLCREST ESTATES SUBDIVISION LOCATED AT 511
OHLONE PARKWAY (APNS: 018-372-14 AND 018-381-01)
STATEMENT OF ISSUES:
The developers of the Hillcrest Estates subdivision have requested approval of a Development Agreement to allow the 144-unit housing project to be completed in phases extending to 2026.
RECOMMENDED ACTION:
Staff recommends that the Council introduce by title only and waive further reading of an Uncodified Ordinance of the City of Watsonville Adopting a Development Agreement for the Hillcrest Estates Subdivision Located at 511 Ohlone Parkway, based upon the findings in the staff report.
DISCUSSION:
On August 28, 2018, during a regularly scheduled public meeting, the Council adopted the following four resolutions.
Resolution No. 139-18 (CM) certifying the Final Environmental Impact Report (EIR) for the Project;
Resolution No. 140-18 (CM) approving the twenty-second (22nd) amendment to the Watsonville 2005 General Plan to re-designate the two parcels from (I) Industrial to (RHD) High-density Residential. Resolution No. 141-18 (CM) approving a tentative map to subdivide an approximately 13 acre site into 150 residential lots and six common area parcels; and Resolution No. 142-18 (CM) approving a special use permit with design review and specific development plan to allow development of 23 single-family units, 40 duplexstyle townhouse units and 87 row-style townhouse units for a total of 150 dwelling units.
During the same meeting, the Council conducted a first reading of Ordinance No. 1372-18 (CM), an uncodified ordinance to rezone and establish a Planned Development Overlay District
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx on Assessor’s Parcel Number 018-372-14 from IG (General Industrial) to RM-3/PD (Multiple Residential High Density).
On September 11, 2018, the Council conducted a second reading and adopted Ordinance No. 1372-18 (CM).
On March 12, 2019, the City Council adopted Resolution No. 29-19 allowing an amendment to the EIR Mitigation Measure MM N-6 regarding construction noise mitigations, allowing modification to the construction sound wall placement and reducing construction hours to reduce noise impacts.
On May 18, 2021, an application for a Major Modification to the approved project known as Hillcrest Estates (formerly Sunshine Vista) was submitted for review. The proposed modifications included the reduction in the total number of units from 150 to 144, modification of the tentative map and grading plans, parking and project phasing, and minor modifications to landscaping, circulation, programming of common open space, building design and floor plans. In addition, an application to enter into a Development Agreement was submitted for review.
On July 6, 2021, the City Council adopted Resolution No. 210-21 (CM) amending the Tentative Map for Tract No. 1607, Hillcrest Estates Subdivision, Resolution No. 211-21 (CM) approving a Major Modification to the Special Use Permit with Design Review and Specific Development Plan, and Resolution No. 212-21 (CM) approving Addendum No. 3 to the previously certified Environmental Impact Report prepared for the Sunshine Vista (now Hillcrest Estates) subdivision.
During the July 6, 2021 Council meeting, significant concerns were raised regarding the treatment of contaminated soil on the property, specifically the burial of a portion of contaminated soil within the project site.
On July 13, 2021, the Planning Commission adopted Resolution No. 9-21 (CM), recommending that the City Council adopt an uncodified ordinance establishing a Development Agreement for the Hillcrest Estates development.
Since July, 2021, the applicant has been working with the City of Watsonville and the County of Santa Cruz in drafting and obtaining approval of a Remedial Action Plan (RAP) to ensure proper treatment and handling of the contaminated soil. A revised RAP was submitted to the County of Santa Cruz for review and approval on February 7, 2021, and was conditionally approved by the County of Santa Cruz on April 7, 2022.
PROCESS
A development agreement is a contract between a developer and the City that provides a roadmap directing how infrastructure, public spaces, amenities, and units will be built.
Development agreements serve to reduce the risks associated with development because they clearly define how the project will be constructed.
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx California Government Code Section 658641 et seq. authorizes cities to enter into development agreements to minimize waste of resources, de-escalate the cost of housing and other developments to the consumer, and encourage investment in and commitment to comprehensive planning to maximize efficient utilization of resources at the least economic cost to the public and provide certainty to the project applicant.
Resolution No. 9-85 (CM), adopted by the City Council on January 8, 1985, established procedures for consideration of development agreements in the City of Watsonville. Section 1 in Article 3 (Standards of Review) of Resolution No. 9-85 requires that development agreements first be considered by the Planning Commission with recommendation made to the City Council. The five findings2that must be made to support adoption of a development agreement, by ordinance are that the development agreement:
1. Is consistent with the objectives, policies, general land uses and programs specified in the general plan and any applicable specific plan;
2. Is compatible with the uses authorized in, and the regulations prescribed for, the land use district in which the real property is located;
3. Is in conformity with public convenience, general welfare, and good land use practice;
4. Will not be detrimental to the health, safety, and general welfare;
5. Will not adversely affect the orderly development of property or the preservation of property values.
The development agreement is considered by the City Council at a public hearing, and final action is by adoption of an ordinance. The development agreement, if approved, is then recorded creating an encumbrance on title to the subject property, and the benefits and burdens of the agreement are binding upon the City, the owner and all successor owners. The project remains subject to the conditions of approval.
Development Agreement
The project is proposed to be constructed in 5 phases, beginning with soil remediation and environmental grading this spring, and construction of the last phase ending by April 2026.
Given the size and scope of the project, the applicant has requested approval of a development agreement to clearly state what improvements will be required at each phase of development.
When the revised Tentative Map was approved in 2021, it identified 5 development phases, starting with the first phase at the northwestern portion of the property and moving backward up the hill toward Loma Vista Drive. The current phasing plan established in the Development Agreement proposes the opposite, with the first stage occurring near Loma Vista Drive and the last stage being at the northwestern portion of the site.
The benefits of the development agreement apply to the developer, the City, and adjacent property owners and residents because it gives certainty as to when each phase of development will begin and end, what improvements will be built at each phase, and the
1 Added by Stat. 1979, Ch. 934; amended by: Stats. 1984, Ch. 143, Sec. 1; Stats. 1984, Ch. 1009, Sec. 26.); Stats 1986, Stats. 2018, Ch. 856, Sec. 11; Ch. 857, Sec. 3, Stats. 2020, Ch. 208, Sec. 1. 2 Section 301 Resolution 9-85
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx process to approve modifications if necessary. The construction staging schedule is provided in Table 1 below.
Table 1: Construction Stages
Construction Phase Estimated Lots Anticipated Anticipated Anticipated Stage Per T. Map per Stage Duration Early Late
Start Start
1 4 27 18 months 5-1-22 7-15-22
2 3 27 12 months 7-1-22 6-15-23
3 5 31 12 months 7-1-23 6-15-24
4 2 29 12 months 7-1-24 6-15-25
5 1 30 12 months 7-1-25 6-15- 26
Totals 144
Table 2 below provides a list of the major items to be phased in the development, and in what phase each will be constructed.
Table 2: Phasing of Major Project Elements
Pre-Site Improvement/Remediation Phase I(a), I(b), & I(c) Description: Remediation Alternate #3 - Burial Envelope with Soil Cap & Total Site Rough Grading
Timing : Prior to start of Stage 1 construction of site improvements and Dwelling Units
Pubic Benefit: Clean-up of 11.3 acres of contaminated soil affecting the neighborhood community health
Description: Errington Road improved as a construction road Timing: Prior to start of Phase I(a)
Public Benefit: Provides egress/ingress into the site for grading activities Stage 1 Completions
Item #1 Description: Loma Vista Road- entry & exit road into Development Timing: Stage 1 Before 1st Occupancy of Residences in Stage 1 Public Benefit: Roadway provides Fire Access Road #1
Item #2 Description: Road at Loma Vista tree- replacement at Sea View Ranch Timing: End of Stage 1 - Public Benefit: Improvement provides a 3:1 tree replacement w/ sidewalks
Item #3 Description: Install storm water controls.
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Timing : End of Stage 1 - with outflows in Stage 3 - Item #6 Public Benefit: Protects riparian area along Watsonville slough Item # 4 Description: Emergency Access Road #2 [EVAE]
Timing: End of Stage 1 –
Public Benefit: Provides Fire Department alternate fire access to Stage 1 Item #5 Description: Common Landscaped Area
Timing: End of Stage 1-
Public Benefit: Common area landscaping around units 17-30 Stage 2 Completions
Item # 6 Description: Comply with Storm water requirements Timing: End of Stage 2 –
Public Benefit: Enhancement and extends the riparian environment area Item #7 Description: Nature Trail- bordering slough [north and east sides] Stage 3 [remediation encasement area] to Stage 4 [Bird Overlook “A”] Common Area Lots 1 and 6 per Tentative Map]
Timing: Partial completion in Stage 2
Public Benefit: Extends recreation area along the slough Item #8 Description: Adult Gathering & Bocci Ball Venue (Common Area – C) Timing: End of Stage 2 [Common Area Lot 5 of T-Map]
Public Benefit: Provide a community recreation for project and neighbors to include bocce ball court, tables and benches, ADA accessible
Stage 3 Completions
Item #9 Description: Errington Road constructed as entry street Timing: End of Stage 3
Public Benefit: Provides an alternate entrance into the development.
Item #10 Description: Roundabout -Ohlone Parkway
Timing: End of Stage 3
Public Benefit: Offers a traffic flow exiting from Hillcrest without causing a waiting for signal “standing time” from the Project onto Ohlone Parkway Item #11 Description: Community Event Venue & Active Play Area Timing: End of Stage 3 [Common Area Lot 1 of Tentative-Map] Public Benefit: Provide a community recreation for project and neighbors to include a multi-activity area for volleyball, basketball or pickle ball, barbeque area with trellis
Item #12 Description: Nature Trail- bordering slough [north and east sides] Stage 3 [remediation encasement area] to Stage 4 [Bird Overlook “A”] Common Area Lots 1 and 6 per Tentative Map]
Timing: Complete in Stage 3
Public Benefit: Extends recreation area along the slough
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Stage 4 Completions
Item #13 Description: Community Garden & Family Venue (Common Area - B) Timing: End of Stage 4 [Common Area Lot 4 of Tentative-Map] Public Benefit: Provide a community recreation for project and neighbors to include children’s play equipment, family venue, shared community garden, picnic area, trees, tables, benches, see-saw and climbable turtle.
Stage 5 ___ Completions
Item #14 Description: All Public Improvements have been completed prior to the start of Stage 5 – Phase 1 Dwelling Unit construction.
Timing: Completed by the end of Stage 5
Public Benefit: Project has less disruption from construction activities Item #15 Description: Bird Overlook/Common Area “A” [Common Area Lot 2 per Tentative Map]
Timing: Completed by the end of Stage 5
Public Benefit: Offers Nature Observation Station; community open area Item # 16 Description: Common Landscaped Area
Timing: End of Stage 5 [Common Area Lot 3 of Tentative-Map] Public Benefit: Common area landscaping between and surroundings units 17-30 General - Completions
Item #17 Description: Open Space exceeds proportionate area for each Phase.
Timing: All phases
Public Benefit: Each Dwelling Unit has open space views, no lot line fence extends open spaces, and the one-way roads give more space between Dwelling Units, and walkways setbacks
Item #18 Description: Tree-lined Streets
Timing: Distributed equally throughout all Phases
Public Benefit: Enhances streetscape; creates a community environment Item #19 Description: Slough buffer w/50ft setback
Timing: Stages 4 & 5
Public Benefit: Offers all residents a view of the slough waterway and attractive open space views.
Item #20 Description: Provide twenty-nine (29) affordable dwellings disbursed throughout all Phases
Timing: All Phases
Public Benefit: Having units available for sale throughout all Phases Item #21 Description: Affordable dwellings disbursed throughout the project in accordance with the Development Agreement, Exhibit E
Timing: All Phases
Public Benefit: Contributes to community diversify and social acceptance
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Item #22 Description: Maximizing developable land for more efficient land use and varied housing types.
Timing: All Phases
Public Benefit: More open spaces, more physically site layout for a livable community and neighborhood feeling
Item #23 Description: Timely City Actions by Departments for Plan review, plan check, and field inspections.
Timing: [A] Plan Check -1
st review 30 calendar days
[B] Correction Plan Check 10 calendar days
[C] Field Inspection Request 24 hours
[D] Change Order turnaround 3 days
Public Benefit: Minimal project delays and public inconvenience to assure timely delivery of dwellings for final City approvals.
Item #24 Description: Exercise Par Course (throughout development- multiple Common Areas)
[Common Area Lots 1-7 per Tentative Map]
Timing: Beginning with Lot 7 in Stage 1, completion with Stage 5 Public Benefit: Provide a community recreation for project and neighbors The proposed staging/phasing plan for residential unit development is shown in Figure 1 below.
This is also included as Exhibit D to the Development Agreement.
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Figure 1: Hillcrest Estates Phasing Plan
As illustrated on the phasing plan (Figure 1), Stage 1 (Phase 4) will be developed beginning in 2022, and Stage 5 (Phase 1) will be finished in the Spring of 2026. Construction traffic will travel on Errington Road and through the southerly side of Street A. Once Stage 1 (Phase 4) is completed, construction traffic will use Errington Road and residents will utilize the Loma Vista extension. Construction will begin toward the front of the site, and move in a westerly and northerly fashion in phases. Stage 1 will also include the connection of an emergency access road to the Sunshine Gardens development.
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Common Area Improvements
There are 6 common area parcels within the project, which are proposed to be improved in phases. The common area parcels will be owned and maintained by a new homeowner’s association which will operate as a non-profit corporation. The common areas are described below, with phases to be constructed identified.
1) Community Event Venue & Active Play Area
(Common Area –1)
This area is to be built as part of Stage 3 and includes the entrance to the Nature Trail, visitor parking, and multi-activity area (volleyball- basketball -pickle ball - neighborhood barbeque with trellis shade). The HOA can set-up tents, seating, and a stage for events if needed.
2) Exercise Par Course
(Entire Development)
This is a ten (10) station exercise course located throughout the Development-- -(a) adjacent to the nature trail, (b) in the Common Areas, (c) throughout the interior Streets “B” and “C”. It offers running and speed-walking course with varying exercising challenges within the neighborhood. The first portion of the par course will be developed on Common Lot
3) Community Garden & Family Venue
(Common Area - 4)
Separate from the children’s play area but adjacent to the family venue shared with a community garden. Some might call it a picnic area. There are trees, tables with benches, “climbable” turtle, and a “see-saw” structure [4ft high]. To be built as part of Stage 2.
4) Adult Gathering & Bocci Ball Venue
(Common Area – 5)
This venue is designed for the pace of adults who can visit, watch, or play bocci ball, or just sit and relax. Tables with individual benches are designed for chess, checkers or card playing games. There is easy walker and wheelchair access.
To be built as part of Stage 2.
5) Nature/Slough Trail
The nature borders the project site and Harkins Slough. It will be accessed through a switchback from Common Area E and will connect to the southeast to the Sunshine Gardens neighborhood. The development will provide a public access easement to and through the slough trail as a public amenity.
Construction of the trail will begin with Stage 2 (Phase 3) and will be completed during Stage 3.
6) Bird Overlook
(Common Area – A)
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx Will offer a nature observation station and community open area. To be completed during Stage 2.
Street Improvements and Access
The extension of Loma Vista Avenue to Ohlone Parkway will be completed during Stage 1 and will remain as the primary ingress and egress road to the subdivision. The roundabout at Loma Vista and Ohlone Parkway will be constructed during Stage 3.
Errington Road will be improved as a 1-way, 12-foot wide, secondary ingress road to the development as part of Phase 3. Errington Road will be marked as 1-way only to the site.
Affordable Housing Agreement
The Development Agreement incorporates an Affordable Housing Agreement for the project.
With 144 housing units, the project is required to provide 29 affordable units, which will be distributed throughout the project with each phase. The project proposes 1 affordable rowhouse unit type with several different exterior design elements. Each affordable unit will be 3 stories in height and will include a 2-car garage, 3 bedrooms, and 2 bathrooms.
Remediation of Contaminated Soils
At the time of the July 6, 2021 Council hearing, the County of Santa Cruz Environmental Health Agency was reviewing a renewed Remediation Action Plan (RAP) that addressed how contaminated soils on the property would be treated. As the property was used for approximately 60 years as an auto-wrecking, dismantling and storage yard, soil contamination exists onsite.
The chemicals of potential concern evident onsite include arsenic, hexavalent chromium, lead, nickel, diesel and motor oil, and naphthalene. The goal of the remediation is to remove contaminated soil so that the soil leftover contains levels and concentrations that are safe for the residential development. There are established federal guidelines that direct safe levels of contaminants in soils and remediation plans are reviewed and approved by the County of Santa Cruz Health Services Agency.
The County of Santa Cruz directed the developer to make revisions to the Revised RAP in Fall, 2021. The renewed RAP was submitted back to the County of Santa Cruz in February, 2022, and the County of Santa Cruz conditionally approved the RAP on April 7, 2022. The approved RAP is not substantially different than the proposal reviewed in July, 2021. The RAP involves 33,195 cubic yards of contaminated soil. Of this, 5,500 cubic yards are construction/demolition debris that has been removed, and an additional 1,500 cubic yards consist of hazardous waste soils that will be removed to a hazardous waste landfill.
This leaves 26,195 cubic yards of contaminated soil. The RAP outlines that 18,111 cubic yards of this soil will be buried under portions of the street and parking lot within the project site. (See Figure 2). Clean soil would then be placed on top of the contaminated soil, and the entire area would be capped with concrete paving. The remaining 8,084 cubic yards of soil will be sent to an appropriate landfill.
This proposal will require the recordation of a land use covenant condition for the project to ensure that the thickness of the fill cover be regularly checked and maintained. The fill cover
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx should also not become eroded because the burial pit is proposed underneath a street and parking area.
FIGURE 2 Location of contaminated soil burial site
Source: Updated Remedial Action Plan (Weber, Hayes & Associates, February 12, 2022) Building Code Cycle
The California Building Standards Code is updated every 3 years. Because the developer wishes to construct the development under the same Code regulations despite the project extending into a new building code effective period, the Building Official has agreed to apply the 2019 California Building Code to all phases of the development, even though the project will be built under future building code cycles. If a significant modification to the Code occurs that, in the professional opinion of the Building Official, must be applied to the Hillcrest Estates project to protect the health, safety and welfare of City residents, the City will be required to provide 180 days notice to the developer prior to implementing a new code section to the project.
Process for Modifications
Often during construction of large projects such as Hillcrest Estates, project modifications become necessary. The Development Agreement provides a streamlined process for approval of minor and major modifications to the project.
Minor modifications are considered to be minor changes in building materials, color palettes, architectural detail elements, and changes to landscaping. These would be processed administratively and approved by the Zoning Administrator.
Major modifications would consist of anything not listed as a minor modification and would require approval by the Planning Commission. This is different than the standard process for
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C:\Program Files\eSCRIBE\TEMP\20571743021\20571743021,,,Hillcrest Estates DA.docx major modifications, which typically go to the final hearing body for approval, which is the City Council.
The Development Agreement also proposes a shorter appeal period of 10 calendar days rather than 14. These modifications provide a clear roadmap for handling project modifications and provides more certainty for the developer.
SUMMARY OF FINDINGS
The Development Agreement for Hillcrest Estates provides a clear roadmap for the phased development of Hillcrest Estates and provides certainty for the developer, the City, and the community regarding how, when, and what parcels, amenities, and public improvements will be constructed in the project.
The· Development Agreement is consistent with the General Plan. Additionally, the conditions of approval and entitlement approvals associated with the project will ensure that the project is developed in a way that would not conflict with the public's health, safety or general welfare.
STRATEGIC PLAN:
Approval of the Development Agreement aligns with Goal #1 (Housing) of the 2021-2023 Strategic Plan. Goal 1 calls for the City to work proactively to remove barriers to accessing stable, quality, and affordable housing and to strive to create new opportunities to add housing to meet current and future needs.
FINANCIAL IMPACT:
The development of the Hillcrest Estates project and approval of the Development Agreement will provide increased property taxes for the City while also providing 144 high quality homes for Watsonville residents.
ALTERNATIVE ACTION:
The City Council could recommend modifications to the Development Agreement, or could choose to not approve the Development Agreement, however, denial of the Development Agreement would significantly diminish the ability of the developer and the City to coordinate a phased construction project. The City Council may also choose to refer the Development Agreement back to the Planning Commission to consider any modifications.
ATTACHMENTS AND/OR REFERENCES (If any):
1. Site and Vicinity Map
2. Link to July 13, 2021 Planning Commission meeting documents
Disclaimer: This information has been compiled from many sources and is provided 'as-is', with no guarantee, and without warranty of any kind. The City of Watsonville is not responsible for any errors or omissions, or for the results obtained from the use of this information. Sources: City of Watsonville, Sources: Esri, HERE, Garmin, FAO, NOAA, USGS, © OpenStreetMap contributors, and the GIS User Community
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Tax Parcels
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Site &Vicinity Map: 511 OHLONE PARKWAY
Attachment 1
C:\PROGRAM FILES\ESCRIBE\TEMP\20571880023\20571880023,,,ORDINANCE - DEVELOPMENT AGREEMENT.DOCX April 21, 2022 (8:57PM)
ORDINANCE NO. Introduction (CM)
AN UNCODIFIED ORDINANCE OF THE CITY COUNCIL OF THE CITY
OF WATSONVILLE APPROVING A DEVELOPMENT AGREEMENT
(P155) BETWEEN LANDCO HILLCREST, LLC, AND THE CITY OF
WATSONVILLE FOR THE RESIDENTIAL DEVELOPMENT PROJECT
KNOWN AS “HILLCREST ESTATES” LOCATED AT 511 OHLONE
PARKWAY
Project: Hillcrest Estates Subdivision
APNS: 018-371-14 and 018-381-01
WHEREAS, Resolution No. 9-85 (CM), adopted by the City Council on January 8, 1985, establishes procedures for consideration of development agreements in the City of Watsonville; and
WHEREAS, Section 1 in Article 3 (Standards of Review) of Resolution No. 9-85 requires that development agreements first be considered by the Planning Commission with recommendation made to the City Council; and
WHEREAS, the purpose of development agreements is to establish an understanding regarding dedications and public improvements to be made by the developer, project phasing, long-term maintenance of public areas, fees to be deferred/waived by the City, standards for affordable housing, and profit participation in the resale of homes; and
WHEREAS, on August 28, 2018, the City Council took the appropriate actions, including certifying the Final Environmental Impact Report (EIR) pursuant to the California Environmental Quality Act (CEQA), to approve the Hillcrest Estates residential development; and
WHEREAS, the City Council adopted Addendum No. 2 to the Environmental Impact Report (EIR Addendum) at its July 6, 2021, meeting; and
C:\PROGRAM FILES\ESCRIBE\TEMP\20571880023\20571880023,,,ORDINANCE - DEVELOPMENT AGREEMENT.DOCX April 21, 2022 (8:57PM)
WHEREAS, Major Modification and Tentative Map for Hillcrest Estates was approved by the City Council on July 6, 2021, and the Development Agreement is intended to a variety of components, mainly construction phasing; and WHEREAS, this Development Agreement is intended to address a variety of project components, including construction phasing, consistent with the entitlements and adopted CEQA findings; and
WHEREAS, the appropriate public noticing procedures have been followed and a public hearing was held in accordance with the California Government Code and City of Watsonville Municipal Code requirements; and
WHEREAS, the Planning Commission adopted a Resolution No. 9-21 (PC) on July 13, 2021, recommending that the City Council adopt an uncodified ordinance approving the Hillcrest Estates Development Agreement; and WHEREAS, the City Council has considered all written and verbal evidence regarding this application and finds the following:
1. The Development Agreement is consistent with the objectives, policies, land uses and programs specified in the General Plan and any applicable specific plan. The Development Agreement sets out the timing for all improvements for the Hillcrest Estates development, and identifies what parties are responsible for such improvements. In addition, the Development Agreement identifies the effective building code for the project and the fee schedule to be used for each phase. The entire project was reviewed for consistency with the General Plan and all applicable Municipal Code regulations and policies as part of the Major Modification to the project entitlements and EIR addendum that was approved by the City Council on July 6, 2021.
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The Development Agreement clarifies the timing for the items listed below:
Location of affordable units by phase
Common area amenities
Trail development
Unit phasing
Street improvements
Emergency access
Street tree replacement on Loma Vista
Roundabout at Loma Vista and Ohlone Parkway
Stormwater improvements
Improvement of Errington Road as 1-way ingress
Building code cycle
Procedures for modification to the project
2. The Development Agreement is compatible with the uses authorized in, and the regulations prescribed for, the land use district in which the real property is located.
The Hillcrest Estates subdivision was approved by the City Council in 2018, and included a General Plan Amendment and Rezoning to allow residential uses on the project site. The Development Agreement provides the roadmap for how the entitled Project will be constructed, in that it clearly lays out what improvements will be required for each phase of development. Through the Major Modification application and EIR Addendum prepared for the Project and approved by City Council on July 6, 2021, the Project was found to be compatible with the RM-3 (Multi-Family Residential, High Density) Zoning district.
3. The Development Agreement is in conformity with public convenience, general welfare and good land use practice. The Development Agreement defines what public amenities will be constructed at each phase of development, so that equitable improvements are made with each stage. For instance, Common Area A, the bird overlook, replacement of trees on Loma Vista, and emergency access roads, will all be constructed during Stage 1 of the Project. Stage 2 will include the
C:\PROGRAM FILES\ESCRIBE\TEMP\20571880023\20571880023,,,ORDINANCE - DEVELOPMENT AGREEMENT.DOCX April 21, 2022 (8:57PM)
beginning of the development of the Slough Trail and a portion of the par-course that will extend throughout the Project.
The Development Agreement also references the Affordable Housing Agreement for the Project and identifies equitable numbers of affordable units within each stage of the Project construction.
By carefully identifying what amenity and improvement is required at each stage the Development Agreement provides a clear roadmap for the Project in line with good land use practices and facilitates the provision of amenities that increase as the development progresses.
4. The Development Agreement will not be detrimental to the health, safety, and general welfare. The Development Agreement creates a clear roadmap for the phased development of the Project. By clearly outlining the improvements required at each stage of the Project, and providing a timeline in which all phases of development will be completed, the agreement ensures that the overall Project will be a benefit to the community and will not become detrimental or a nuisance for the adjoining neighborhood.
5. The Development Agreement will not adversely affect the orderly development of property or the preservation of property values. The proposed Development Agreement provides a clear timeline and path for development of the Hillcrest Project to be constructed in stages so that it is completed in an orderly fashion.
Without a development agreement, the Project would have a higher potential to follow a disordered development pattern which could affect neighboring properties and property values. As stated in Finding #1, the list of items identified in the
C:\PROGRAM FILES\ESCRIBE\TEMP\20571880023\20571880023,,,ORDINANCE - DEVELOPMENT AGREEMENT.DOCX April 21, 2022 (8:57PM)
Development Agreement are required to be constructed during certain stages, which provides certainty and clarity for both the City and the development team.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF WATSONVILLE, CALIFORNIA, DOES HEREBY ORDAIN AS FOLLOWS:
SECTION 1: ENACTMENT.
The City Council hereby approves a Development Agreement between the City of Watsonville and Landco Hillcrest,LLC., allowing dedications and public improvements to be made by the developer, project phasing/staging, long-term maintenance of public areas, fees to be deferred/waived by the City, standards for affordable housing, and profit participation in the resale of homes located at 511 Ohlone Parkway, Watsonville, California, and directs the City Manager Pro Tempore to execute same.
SECTION 2. PUBLICATION.
This ordinance shall be published in the Watsonville Register-Pajaronian and/or Santa Cruz Sentinel in compliance with the provisions of the Charter of the City of Watsonville.
SECTION 3. EFFECTIVE DATE.
This ordinance shall be in force and take effect thirty (30) days after its final adoption.
SECTION 4. RECORDATION.
The Development Agreement shall be recorded by the City Clerk pursuant to Government Code § 65868.5.
File: 2x623\REPORTS\2017-07_Remediation Plans\2017-07-31_Remedial Action Plan Weber, Hayes & Associates
Hydrogeology and Environmental Engineering
120 Westgate Drive, Watsonville, CA 95076
(831) 722-3580 www.weber-hayes.com
Renewed Remedial Action Plan (2022)
(Mitigation of Shallow, Impacted Soils / Soil Management Plan) Vacant Commercial Land
(Former Clusters Storage Yard)
511 Ohlone Parkway, Watsonville
February 18, 2022 (rev. March 18, 2022)
Prepared for:
LANDCO Hillcrest, LLC.
c/o: Mark Lester, Lisa Li
Twenty Park Road
Burlingame, California 94010
For Submittal To:
County of Santa Cruz Health Service Agency (SC-HSA)
c/o: John Gerbrandt
701 Ocean Street, Room 312
Santa Cruz, California 95060-4073
Subject Site:
Hillcrest Development Project
511 Ohlone Parkway
Watsonville, California
018-372-14
(11.3-acres)
View of the 11.3-acre, Multi-Terraced, Subject Site
(Google Earth Birds Eye View)
Exhibit B
TABLE OF CONTENTS
ii
1.0 EXECUTIVE SUMMARY......................................................................................................................... 1
2.0 INTRODUCTION.................................................................................................................................... 5
2.1 Site Description & Land Use................................................................................................... 6
2.2 Site Subsurface Conditions..................................................................................................... 8
2.3 Purpose of this Renewed RAP and Planned Future Land Use................................................ 9
2.4 Environmental Screening Levels............................................................................................ 9
3.0 SUMMARY OF COMPETED SITE INVESTIGATIONS............................................................................. 11
3.1 Phase I/II Environmental Site Assessment (ESA) (WHA, 2004)............................................12
3.2 Follow-up Soil Quality Evaluation (Lowney, 2004) .............................................................. 12
3.3 Subsequent Phase I/II ESA (WHA, 2016).............................................................................. 13
3.4 Additional Phase II Sampling Report (Trinity, 2016) ............................................................ 13
3.5 Statistical Evaluation of Naturally-Occurring Metals (TH&Co, 2018) ..................................15
3.6 Transport Modeling (TH&Co, 2021)..................................................................................... 16
3.7 Summary of Soil and Groundwater Testing ......................................................................... 17
4.0 NATURE AND EXTENT OF CONTAMINATION..................................................................................... 18
4.1 Overview of Chemicals of Concern ...................................................................................... 18
5.0 REMEDIAL ACTION OBJECTIVE........................................................................................................... 20
5.1 Remedial Action Objective................................................................................................... 20
5.2 Applicable or Relevant and Appropriate Requirements...................................................... 20
5.3 Site-Specific Remedial Criteria ............................................................................................. 22
5.4 Additional Statistical Evaluation of COPC Risk ..................................................................... 22
5.4.1 COPC Cumulative Non-Cancer and Cancer Risks................................................... 23
5.4.2 COPC Evaluation of 95% UCL Cumulative Risks..................................................... 24
6.0 FEASIBILITY ANALYSIS ........................................................................................................................ 27
6.1 Remedial Action Alternatives............................................................................................... 27
6.1.1 Alternative 1 - No Further Action.......................................................................... 27
6.1.2 Alternative 2 - Site-wide Shallow Soil (2-feet) Excavation & Targeted Deeper Excavation and Disposal ........................................................................................ 28
6.1.3 Alternative 3 - Burial Envelope with Soil Cap and Off-Haul ..................................30
6.2 Remedial Action Alternatives Evaluation............................................................................. 34
7.0 REMEDIAL DESIGN............................................................................................................................. 35
8.0 IMPLEMENTATION SCHEDULE........................................................................................................... 38
9.0 LIMITATIONS...................................................................................................................................... 39
10.0 REFERENCES....................................................................................................................................... 40 Exhibit B
TABLE OF CONTENTS (continued)
iii
Figures, Tables, Calculation Sheets, & Appendices
Figure 1:
Figure 2:
Figure 3:
Figure 4a:
Figure 4b:
Figure 4c:
Figure 5:
Figure 6:
Figure 7:
Table 1:
Table 2:
Table 3:
Table 4:
Appendix A:
Appendix B:
Appendix C:
Appendix D:
Appendix E:
Appendix F:
Appendix G:
Appendix H:
Location Map
Vicinity Map
Site Map with Shallow Soil Sample Location Grid (for Table 1 reference) Shallow Soil Contaminant Exceedances (Less than 2 Feet) Deeper Soil Contaminant Exceedances (2 Feet and Below)
Locations Requiring Additional Confirmation Sampling
Site Environmental Grading Plan
Soil Mitigation Pit Plan
Stockpile Plan & Confirmation Testing Grid
Master Table of All Previously Collected Soil Samples
Soil Sample Test Results: CAM 17 Metals Analysis
Soil Sample Test Results: Total Lead Analysis
Soil Samples Test Results: Volatile Organic Compounds & Fuel Fingerprint Civil Design Plans for Hillcrest Subdivision Development (Ramsey Engineering) Summary of Subsurface Conditions and Previously Completed Environmental Investigations Leachability & Health-Based Risk Evaluations (Technical Reference Documents) Soil Management Plan (includes Environmental Site Safety & Dust Monitoring Plan for Remedial Excavation)
Soil Sampling Field Methodology for Additional Samples
Agency Documentation & Standard Land Use Covenant (template) Model Land Use Covenant (deed restriction) and Financial Assurance Details Geotechnical Evaluation, Hillcrest Residential Subdivision (MPE) Exhibit B
TABLE OF CONTENTS (continued)
iv
Acronyms & Abbreviations
bgs: below ground surface
BTV: Background Threshold Value
Cal/EPA: California Environmental Protection Agency
CDFW: California Department of Fish and Wildlife
COC: Chemicals of Concern
COPCs: Chemicals of Potential Concern
Cr(VI) Hexavalent Chromium
DTSC:
DTSC-SLs:
Department of Toxic Substances Control
DTSC-modified Screening Levels
EPA: Environmental Protection Agency
ESA: Environmental Site Assessment
ESLs: RWQCB-established, Environmental Screening Levels HI Hazard Index
ILCR Incremental Lifetime Cancer Risk
IRAP: Interim Remedial Action Plan
ISM Incremental Sampling Methodology
LUC: Land Use Covenant
MCL: Maximum Contaminant Level
ppm (mg/kg): parts per million (milligrams per kilogram) RAO: Remedial Action Objective
RBSLs: Risk Based Screening Levels
RSLs: USEPA-established, Regional Screening Levels
RWQCB: California Regional Water Quality Control Board
SCM: Site Conceptual Model
SC-HSA: County of Santa Cruz Environmental Health Services Agency SMP Site Management Plan
SSP Site Safety & Dust Monitoring Plan
TBCs: To-Be-Considered Criteria
TPH-diesel Total Petroleum Hydrocarbons as diesel
TPH-motor oil: Total Petroleum Hydrocarbons as motor oil Water Board: California Regional Water Quality Control Board, Central Coast Region 95%-UCL 95% upper confidence limit
USA: Underground Service Alert
USL: Upper Simultaneous Limit
USEPA: United States Environmental Protection Agency
VOCs: Volatile Organic Compounds
WHA: Weber, Hayes and Associates
Exhibit B
File: 2022-02_Renewed Remedial Action Plan 1
Weber, Hayes & Associates
Hydrogeology and Environmental Engineering
120 Westgate Drive, Watsonville, CA 95076
(831) 722-3580 www.weber-hayes.com
Renewed Remedial Action Plan (2022)
(Mitigation of Shallow, Impacted Soils)
1.0 EXECUTIVE SUMMARY
This Renewed Remedial Action Plan (Renewed RAP) has been prepared on behalf of LANDCO Hillcrest, LLC in support of the construction of an 11.3-acre, residential development located at 511 Ohlone Parkway in Watsonville (the “Site”, see Topographic Location Map, and Aerial Vicinity Map, Figures 1 and 2 respectively). The property is being redeveloped for residential land-use to include single-family homes and housing community amenities (a project description and design drawings for the “Hillcrest Subdivision” redevelopment are included as Appendix A).
This Renewed RAP has no significant changes to the previous plan (Updated RAP; WHA, 2021). The following changes have been made since the previous submittal:
1) Appendix A (updated): Now contains the final remediation and rough grading plans for the Hillcrest Development.
2) Appendix C: The transport (leachability) modeling report has been included as a reference (TH&A, 2021; previously considered a data gap).
3) Appendix D (updated): This appendix has been updated to also include a construction-based Soil Management Plan, which includes the previously submitted Environmental Site Safety & Dust Monitoring Plan for remedial excavation & post-construction earthworks within the cap footprint.
Site Redevelopment Plan
(Transition of Vacant Commercial Lot to Residential)
Concrete Capped
Soil Mitigation Pit
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
2 4) Appendix F: For reference, includes agency correspondence and details regarding long-term management of the residual capped contaminated soils to ensure the capped soils are protected over time. It includes a copy of the standard Land Use Covenant (template) and details of the Financial Assurance mechanism planned for the site.
5) Appendix G: For reference, this appendix includes model Land Use Covenant (deed restriction) and Financial Assurance details to address the long-term stewardship for a capped remediation pit (i.e., the selected cleanup alternative).
6) Appendix H: For reference, this appendix includes portions of the Geotechnical Evaluation, Hillcrest Residential Subdivision (MPE, 2021), which provides engineered support for the construction of the selected remedial alternative.
Summary of Site Conditions (from Section 2.0): The irregularly-shaped subject Site is situated on a small hilltop that has been cut and filled to create several flat-lying terrace areas. The Site is currently a vacant lot (all structures and infrastructure were cleared from the site in 2017). In addition, the property contains a large topographic depression in the northwestern corner of the planned development that will be infilled, compacted and brought up to grade ( see aerial on the report cover).
Over the past sixty (60) years the Site contained several residences, offices, automotive shop structures, and dirt lots that were primarily associated with automotive wrecking, dismantling, and vehicle storage (see the historical areal clip in Section 2.1). The Site is bordered by residential development to the west, light commercial land use to the south and the Watsonville Slough to the north and east. The northern and eastern perimeter lands along the slough are part of a protected riparian corridor and are not included in this Renewed RAP. These perimeter areas located beyond the California Department of Fish and Wildlife (CDFW) setbacks established for the Watsonville Slough will ultimately be constricted as a public walkway (path) and are being separately assessed.
A detailed description of four (4) previously completed sampling mobilizations and the associated, Statecertified laboratory testing results are provided in Appendix B.
Summary of Original Development and Remediation Plan (2017): The original development plan (2017, “Sunshine Vista”) included transforming the property’s topographic knoll into a relatively flat-lying development using retaining walls and off-haul of approximately 44,000-yd3 of surplus soil to balance the site. Proposed remedial clean-up actions included:
1) Removal of all junk vehicles, trash, debris, and structures from past uses (this task has been completed).
2) Remedial excavation and off-site disposal of the upper two (2) feet of soil from within the slough set back limits (the 2-ft, remedial excavation volume estimated to total approximately 33,200- Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
3 yd3). Multiple rounds of delineation soil testing characterized the lateral and vertical extent of relic contaminants to be primarily in the upper two feet of soil across the site. 3) An additional volume of surplus soil, estimated to be approximately 10,800-yd3 , would need to
be exported in order to achieve the sloped terrace design planned for this development.
Section 6.1 (Remedial Action Alternatives) provides a cross-sectional graphic of subsurface conditions that visually shows an example of surplus soil wedge targeted of for export.
The previous selection of remedial “Alternative 2” was selected because the overall plan fully integrated the off-haul of contaminated soil (estimated to be 33,200-yd3 ) within the redevelopment design and was
deemed to be the most cost-effective option (WHA, 2017b). The selection of Alternative 2 was approved for implementation by the overseeing agency, the County of Santa Cruz Environmental Health Services Agency (SC-HSA, 2018b).
Summary of Current (revised) Development and Remediation Plans (2021): In 2018, the development investors determined the large-volume off-haul plan (Alternative 2) was economically infeasible due to unexpected and prohibitive costs associated with soil transport and landfill disposal. As a result, a third remedial option (i.e., Alternative 3) was reevaluated, which includes 1) some off-haul of approximately half of the impacted soils and, 2) consolidation of the remaining volume of non-hazardous, contaminated soil, and emplacement a within an engineered cap area located beneath a street and parking area in the northwest corner of the development (see the Site Environmental Grading and Mitigation Plans, Figures 5 and 6).
This remedial design is described in detail in Sections 5.0 and 7.0 of this report, and has been determined to be the most feasible option for integrating remediation and development plans, because:
• It Addresses the Chemicals of Potential Concern (COPCs): As described in the previously approved, Revised Remedial Action Plan (WHA, 2017), a total of four (4), on-site were identified based on site-wide testing that showed concentration exceedances of conservative, agency-established thresholds designed to be protective of human health for a residential development and the environment (i.e., RWQCB Environmental Screening Levels, ESLs1 ). These COPCs include Lead, TPHdiesel and Motor Oil, and to a much lesser extent Naphthalene. • It is an Agency-Accepted, Remedial Approach: The proposed consolidation and capping approach (Area of Contamination) is an accepted methodology for the remediation of these relatively lowconcentration contaminants, as per guidelines established by California Department of Toxic Substances (DTSC, 2008). The proposed consolidation and isolation (capping) of existing urban1 : Environmental Screening Levels (ESLs): The ESLs have been established for protection of human health and safety as well as multiple contaminant transport pathways. guideline document (RWQCB-SFB, 2019). The ESLs are intended to provide quantitative, risk-based guidance on whether further assessment or remediation of contamination is warranted.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
4 impacted (non-hazardous) soils will completely eliminate potential exposure to future onsite receptors or the environment in order to safely facilitate the planned transition to residential land use.
In order to eliminate shallow, impacted soils from potential exposure to future onsite receptors, this Renewed RAP proposes:
1. Off-haul and landfill disposal of approximately 17,200 yd3 of shallow contaminated soils.
2. In accordance with State Department of Toxic
Substances’ Control remediation guidance,
consolidation and on-site burial of approximately
18,000 yd3 of shallow contaminated soils (nonhazardous) beneath an isolated, capped roadway/parking area in the northeastern corner
of the development (see blue-shaded, capped
area, right). And,
3. Emplacement of a clean, impervious cap (i.e., final
cap surface is to be reinforced concrete) above
the AOC-buried soils and implementation of a
Land Use Covenant that includes requirements for
standard of care monitoring and a PostConstruction Site Management Plan detailing agency notification and soil handling obligations
for future cap or utility repairs.
As noted above, this remedial earthworks plan has been integrated into the development’s grading plan (Ramsey, 2022; a copy is included as Appendix A). Site soils have already been profiled and approved for landfill disposal to: 1) John Smith Class III Landfill for acceptance of 16,700-yd3 of non-hazardous contaminated soils, and 2) Kettleman Class I Landfill for acceptance of 1,500-yd3 of California haz-waste classified soils. Remedial & site development activities (digging, stockpiling, loading, & trucking) can begin immediately following agency approval of this Renewed RAP. A Site-specific, Stormwater Pollution Protection Plan (SWPPP) will be managed throughout the earthworks project and the CDFW has provided written approval for completing these remedial tasks.
Selected Remedial Action (Section 6.1): Remedial alternatives evaluated in this report included: a) no action (baseline conditions), and b) two excavation options (Site-wide excavation of the upper 2-ft of soils and off-site disposal of impacted soils, +/- some on-site burial of impacted soils overlain by a clean soil cap. Remedial Alternative 3 (“Burial Envelope with Soil Cap and Off-Haul”) has been selected as the most reasonable and appropriate remedial option because it:
See Figures 5 and 6 for Additional Details
Concrete Capped
Soil Mitigation Pit
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
5 • is protective of human health;
• is effective over both the short and the long term;
• is cost effective because it incorporates remedial action with redevelopment grading; • limits the potential for a deed restriction;
• is implementable; and
• is the most cost effective based on redevelopment plans.
2.0 INTRODUCTION
This Renewed Remedial Action Plan (Renewed RAP) has been prepared on behalf of LANDCO Hillcrest, LLC in order to: 1) document the magnitude and extent of impacted soils at the subject Site, and 2) propose an acceptable remedial approach designed to eliminate potential environmental risks associated with historical industrial land use at the Site in anticipation of residential redevelopment.
Agency oversight of the recommended, Site-wide remediation is provided by SC-HSA, in accordance with a Site-specific, Voluntary Cleanup Program agreement (SC-HSA, 2016). This Renewed RAP combines and incorporates the following into a single document:
1. It documents previously recommended interim remedial action tasks that included demolition of relic structures and scraping the upper 6-inches of soil across the Site in preparation for final remedial actions (WHA, 2017a).
2. It incorporates delineation of soil and groundwater testing documented in the previously submitted Remedial Action Plan (WHA, 2017b); and
3. It incorporates County of Santa Cruz Environmental Health Services Agency (SC-HSA) agency technical and toxicological-based comments Copies of SC-HSA comments have been included as a reference (Appendix F).
The purpose of this updated plan is to detail a soil removal action in anticipation of residential development of the property and it includes the following elements:
• A description of the nature and extent of the COPCs at the Site; • A description of the Remedial Action Objective (RAO), describing the goals to be achieved; • An analysis of the alternatives considered (including the effectiveness, implementability, and costs for each alternative);
• A description of the recommended alternative and the plan for its implementation.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
6 2.1 Site Description & Land Use
The subject Site is an irregularly-shaped 11.27-acre parcel located at 511 Ohlone Parkway in Watsonville (Assessor Parcel Number 018-372-14). The Site contains three (3) distinct terraces that include the upper terrace which has an elevation of ~70 feet Mean Sea Level (MSL), the middle terrace at ~50 feet MSL, and the lowest terrace at ~25 feet MSL Figure 1). The property is flanked to the north and east by the Watsonville Slough, and first encountered groundwater monitored at the adjoining site confirms highwater elevation of 11-ft MSL (documentation included in Appendix B).
A number of long-term structures were demolished and removed in 2017 – see the clip of historical land use aerials presented below. Currently, the property remains an undeveloped, dirt-covered lot and the tiers of flat-lying terraces are connected by dirt and gravel access roads (see Aerial Vicinity Map, Figure 2). Remaining areas are vegetated, which include the steeper contoured hillsides and flatter areas adjacent to the slough. Note: The northern and eastern perimeter of the property along the slough is part of a protected riparian corridor and is not included in the current Renewed RAP. These areas are being separately assessed and will be kept accessible for future characterization and remedial action.
Current view of the northwestern corner (topographic depression) of the vacant Site Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
7 Historic grading at the Site included cutting (lowering) and filling. Up until 2017, the flat-lying terraces were primarily occupied by various automotive wrecking/dismantling and vehicle storage businesses (i.e., junkyard salvaging of vehicles, sales of dismantled parts, and towing company storage, see aerial birds eye view of the site in 2016, above).
Historical aerial photographs document that the subject Site was undeveloped, possibly used as grazing lands in the 1930s, and remained so until sometime between 1956 and 1968 (WHA, 2016). By 1968, the Site contained a mixture of automotive wrecking and salvage operations on the western and central portions of the property. Automotive salvage operations continued until approximately 2016 when the majority of vehicles, structures and trees were removed from the property in preparation for redevelopment. All structures, foundations and stored equipment were removed in 2017 and all areas 1956 1968
Historical Views of the 11.3-acre, Multi-Terraced, Subject Site (Site cleared of all infrastructure in early 2017 )
2017 2016
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
8 of the Site remain accessible by the historic access road network, which will be utilized during remedial action activities.
Vicinity land-use has been largely agricultural up until around 2005 when historical aerials show the lands to the west, south and north were developed into residential neighborhoods. The Site is currently bordered to the north and east by Watsonville Slough, to the south by a commercial trucking warehouse, to the southeast by vacant land recently approved for residential development and to the west by residential developments (see Aerial Vicinity Map, Figure 2).
Multiple rounds of site characterization testing, described in detail in Section 3.0, have shown that surface and shallow soil to depths of up to 2 feet below ground surface contain residual contaminants associated with the decades-long, land use of vehicle storage activities. Exploratory trenches along the terrace perimeters have shown some non-native areas containing fill soils and debris (i.e., tires, vehicle parts, and concrete rubble).
The Hillcrest Subdivision Development project proposes to remediate shallow contaminated soils and construct a residential development in this location, including new road access to Ohlone Parkway and new stormwater treatment facilities. Planned Site redevelopment will involve extensive grading to lower the upper elevations at the Site (design plans show there will be a significant surplus of soils that need to be exported from the Site; design drawings included as Appendix A).
2.2 Site Subsurface Conditions
The Site is located near the north end of Monterey Bay, at the western base of the Santa Cruz Mountains (Coast
Ranges Geomorphic Province). Regional geologic maps
and reports indicate that surface soils underlying the Site and vicinity area generally consist of pliestocene-aged fluvial facies (‘Qwf’, see Regional Geologic Map, right), which are reported to consist of semi-consolidated,
moderately to poorly sorted silt, sand, silty clay, and gravel. Gravel, approximately 50 feet thick, is generally present 50 feet below ground surface (bgs). The areas to the immediate north and east of the Site have surface
soils consisting of Basin deposits (Qb), which are
generally unconsolidated, plastic, silty clay and clay rich in organic material.
Phase II Site Assessment drilling completed in July 2016 (WHA, 2016), and details of the drilling and sampling program are included in Appendix B. Investigative tasks included fourteen (14) direct push borings that were continuously cored to depths of 8-12 feet below the ground surface (bgs). These Regional Geologic Map
Pleistocene-aged fluvial facies (Qwf) underlie the Site.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
9 borings generally encountered clay to depths of approximately 4 to 8 feet bgs, underlain with silty sand.
These shallow soil conditions are relatively consistent across the Site, regardless of elevation. Nonnative surficial fill material was encountered in the majority of the 14 borings ranging in thickness of about 0.5 to 2 feet. Six (6) perimeter borings were extended to groundwater which was encountered at depths ranging from 19.7 to 33.7 feet bgs (not necessarily stabilized water table conditions). On-site shallow groundwater is assumed to flow northerly and easterly, towards the adjoining, low-lying slough.
First encountered groundwater at an adjoinig fuel leak stie has documented a highwate elevation of ~11 ft above MSL (docuentation included in Appendix B).
2.3 Purpose of this Renewed RAP and Planned Future Land Use Environmental investigations conducted at the Site identified the presence of TPH and select metals in near surface soil at concentrations exceeding Tier 1, risk-based residential soil screening levels. The property owner intends to develop the Site for residential use. Soil removal and consolidation proposed for the Site follow DTSC-approved protocols for remediation of an impacted property.
2.4 Environmental Screening Levels
Site-specific, Chemicals of Potential Concern (“COPCs”) have been identified based on a review of land uses and laboratory analysis results obtained from multiple soil and groundwater sampling investigations at the subject property. The significance of all COPC detections in soil and groundwater were evaluated by comparing all detectable concentrations with agency-published screening levels. The screening thresholds have been established by several agencies that include:
• Federal screening levels (United States Environmental Protection Agency2 , USEPA), and
• State screening levels: a) one established by the California Department of Toxic Substances3 (DTSC);
2 : Regional Screening Levels (USEPA-RSLs): Federally established, human health and safety, risk-based threshold concentrations established by the USEPA for use in the human health risk assessment process at chemical release sites. These screening levels are derived at a target cancer risk level of 1×10-6, and a target noncancer (hazard quotient value) of 1 (USEPA, 2021) 3 : DTSC-modified Screening Levels (DTSC-modified SLs): California-established, human health and safety, riskbased threshold concentrations established by California DTSC in their guideline document (DTSC, 2020).
These DTSC-modified screening levels are used in conjunction with the USEPA’s RSLs to evaluate chemical concentrations in environmental media at California sites and facilities (i.e., for those chemicals not posted on the Note 3 website, DTSC‐HERO endorses USEPA‐RSLs). These screening levels are also derived for a target cancer risk level of 1×10-6
, and a target non-cancer (hazard quotient value) of 1 but for select chemicals, California uses a more conservative toxicity evaluation for a select number of urban chemicals.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
10 • and b) the second established by the California Regional Water Quality Control Board4 (RWQCB).
These established “Tier 1” screening levels have been developed using a set of conservative exposure and risk assumptions considered to be protective of the human health and the environment and based on appropriate land use parameters (i.e., residential-specific, or commercial/industrial-specific).
The Tier 1 screening levels have been used to evaluate sampling results of laboratory tested soil and groundwater. COPC concentrations that exceed media-specific screening thresholds provide the basis where further evaluations, general response actions, or specific mitigation measures may be needed.
Aside from naturally-occurring metals having a site-specific, Background Threshold Value (BTV), this assessment uses the lowest (most conservative), agency-derived threshold as a cleanup goal for chemical compounds (see Tables for additional details).
Soil Screening Levels: As described in Section 4.1 (overview of chemicals of concern), site-specific cleanup standards have been based on either:
1. Agency-established Tier 1 thresholds [i.e., quantitative, worst-case, risk-based guidance based on multiple pathways that include potential threats to groundwater (leaching), human health (ingestion, inhalation, dermal), and ecological (surface soils, surface waters)]; or,
2. Site-specific, Background Threshold Value (BTV) for naturally occurring metals.
The soil tables presented in this Renewed RAP (Tables 2-4) present the multi-pathway RWQCB-ESL, as well as the DTSC-modified SLs (and the relevant USEPA RSLs for those chemical compounds that do not have an established DTSC-modified screening level).
Groundwater Screening Levels: The subject property is located within the jurisdiction of the Central Coast Regional Water Quality Control Board (Water Board) and the regulatory guidance used to evaluate potential impacts to groundwater is the California State Water Resources Control Board’s Maximum Contaminant Levels (“MCLs”) for drinking water resources (CCR Title 22). Summary tables of laboratory tested groundwater are included in Appendix B and include the State MCLs as well as RWQCB-ESLs for those contaminant compounds where no MCL exists (i.e., Total Petroleum Hydrocarbons).
4 : Environmental Screening Levels (RWQCB-ESLs): The California Regional Water Quality Control Board (San Francisco Bay Region) also provides screening threshold guidance (RWQCB-SFB, 2019). The ESLs are intended to provide quantitative, worst-case, risk-based guidance (based on multiple pathways that include potential threats to groundwater (leaching), human health (ingestion, inhalation, dermal), and ecological (surface soils, surface waters). The final ESLs are not cleanup goals but are meant to assist risk managers in determining whether further assessment or remediation of contamination is warranted.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
11 3.0 SUMMARY OF COMPETED SITE INVESTIGATIONS
Due to the decades of vehicle storage activities, surface and shallow soil beneath the Site contains contaminants associated with the land use. Detected contaminants have been well characterized through multiple rounds of soil and groundwater testing that included laboratory analysis of 249 soil samples collected from 145 locations across the Site. Because of the variable sampling nomenclature used by the different consulting firms, all samples have been renamed by quadrant for uniformity and ease of finding the location: Figure 4a presents the quadrants and sample location (A through E on the north-south axis, and #1 through 7 on the east-west axis), and Table 1 presents this information in a tabulated form. Specifically, Table 1 provides a chronological list of all samples obtained at the Site (original consultant ID), the quadrant where the sample is located, and the quadrant sampling ID (updated sample ID).
The following tables and figures and charts have been compiled to better show the overlapping data collected at this property over the last 12 years.
Table 1:
Table 2:
Table 3:
Table 4:
Tables
Master Table of All Previously Collected Soil Samples
Soil Sample Test Results: CAM 17 METALS Analysis
Soil Sample Test Results: Total Lead Analysis
Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint Figure 3:
Figure 4a:
Figure 4b:
Figure 4c:
Appendix B:
Figures
Soil - Sample Locations (identified by quadrant)
Soil - Contaminant Exceedances in Shallow Soil (< 2 ft depths) Soil - Contaminant Exceedances (> 2-ft depths)
Soil - Contaminant Exceedances w/o Clean Base Sample (confirmation sample required) Summary description of previous soil & groundwater investigations (including summary tables & figures). Tabulated results of groundwater samples are included in Appendix B which include 8 grab samples tested in 2004, 6 grab samples in 2016, and analysis of the Site’s domestic water supply well. Only trace to non-detectable results were detected in any of the groundwater samples.
Consultant reports from 2004 and 2016 concluded that chemical impacts exceeding agency screening levels for residential land use were generally limited to the upper two feet of soil. Results of the four (4), on-site environmental investigations are summarized below (a more detailed description of these evaluations including copies of the original sample location maps/tabulated results for each round of sampling is presented in Appendix B).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
12 3.1 Phase I/II Environmental Site Assessment (ESA) (WHA, 2004) This initial round of property transaction screening and preliminary shallow soil screening assessment identified three Recognized Environmental Conditions5 including:
• Long term storage and dismantling of vehicles on native soils • Long term handling, containerization, and disposal of hazardous materials • Fill wedges contained tires, debris and non-native fill soils Based on these potential liabilities, a Phase II Soil and Groundwater Testing Program was implemented that included the collection and laboratory analysis of representative soil collected at sixty-five (65) locations across the Site. Soil samples were analyzed for Total Petroleum Hydrocarbons (TPH), Volatile Organic Compounds (VOCs), metals, and anti-freeze. Laboratory-tested shallow soil samples identified isolated areas of shallow soil contamination, but were generally limited to relatively low-level, motor oilrange petroleum hydrocarbons. Results did not indicate evidence of any significant chemical release at the Site. Isolated pockets of elevated Lead contamination were identified (mostly on the southwestern portion of the Site) relative to regulatory-established, screening thresholds (see Tables 2, 3, and 4 for results and Appendix B for an in-depth summary of this subsurface testing investigation).
First encountered groundwater contained only trace concentrations of TPH-diesel and 1,1,1- Trichloroethane (1,1,1-TCA) at levels well below their respective drinking water threshold limits (i.e., the Maximum Contaminant Levels,
6 MCLs). The results were provided to the Central Coast Regional Water Quality Control Board, and that agency did not require additional investigation for the trace detections in groundwater. For reference, original copies of the 2004 sampling location maps and tabulated lab results are included in Appendix B.
3.2 Follow-up Soil Quality Evaluation (Lowney, 2004)
Additional investigation was completed by a potential buyer of the property (KB Homes) to further evaluate the Lead and Total Petroleum Hydrocarbon impacts detected during the initial Phase I/II screening of soils and groundwater (described above). Specifically, thirty-three (33) soil borings were sampled throughout the Site ranging in depth from four (4) to sixteen (16) feet below ground surface.
Results indicated only one (1) of seventy-six (76) total samples had a detection of Lead (110 mg/kg) that exceeded the established human health-risk screening level of 80 mg/kg for residential land use. There 5 : A recognized environmental condition (REC) is defined as the presence or likely presence of any hazardous substances or petroleum products in, on, or at a property: (1) due to release to the environment; (2) under conditions indicative of a release to the environment; or (3) under conditions that pose a material threat of a future release to the environment (ASTM, 2013).
6 : Maximum Contaminant Levels (MCLs): the groundwater cleanup goals based on the region’s Water Quality Control Plan (Basin Plan) for the Central Coast Regional Water Quality Control Board (CCRWQCB) and SWRCB guidelines (RWQCB-2019).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
13 were no exceedances of TPH-diesel or motor oil in a limited set of samples analyzed for these petroleum hydrocarbon based fuels and oils. See Tables 2, 3 and 4 for a summary of the results and Appendix B for original copies of the investigation results and figures.
3.3 Subsequent Phase I/II ESA (WHA, 2016)
Twelve years after the initial soil and groundwater testing described above, a second Phase I/II ESA was completed to evaluate whether there were apparent environmental changes since the 2004 assessment.
Since land use remained the same, the Phase I land use evaluation identified the same potential liabilities that were identified in the earlier Phase I ESA (WHA, 2004). An updated Phase II soil and groundwater testing program was implemented in June 2016 that included the collection and laboratory analysis of soil at twenty-three (23) locations across the Site, and grab-groundwater samples collected from six (6) borings positioned around the perimeter of the Site. Specifically, samples were collected from fill and native soils and analyzed for TPH-gasoline, TPH-diesel, and TPH-motor oil, CAM 17 metals, and selected samples were analyzed for volatile organic compounds. See Tables 2, 3, and 4 for results and Appendix B for an in-depth summary of this subsurface testing investigation). Results indicated the following:
• Shallow Soil Inspection and Sampling: Fifteen (15) shallow soil borings were cored at depths ranging from 0.5 to 4 feet bgs. These shallow soil borings were intended to confirm representative conditions of near surface soils at heavy land-use areas. • Deeper Soil Inspection and Sampling: Eight (8) deeper soil borings were cored to depths of 8 to 12 feet bgs. The borings targeted industrial/commercial land use areas adjacent to established Site structures/workshops, with a few of the borings targeting vehicle dismantling areas, a reported potential underground/aboveground fuel storage tank (UST/AST) locations, and a reported vehicle burn area.
• Grab Groundwater Sampling: Six (6) grab groundwater samples were collected around the perimeter of the Site, in the apparent downgradient direction from the automotive salvage facilities. Depth to groundwater in these borings ranged from 19.7 to 33.7 feet bgs.
This 2016 Phase I/II ESA concluded that based on field observations and laboratory results: 1) the longterm automotive maintenance, salvaging/wrecking activities had not caused significant negative impacts to Site soils, and 2) confirmed that impacted soils were generally limited to the top one to two feet bgs, and 3) confirmed that groundwater was not impacted by current/historical land use site activities.
3.4 Additional Phase II Sampling Report (Trinity, 2016) Trinity Source Group (Trinity) completed additional exploratory trenching to visually inspect fifty-five (55) locations across the Site, primarily located along the slopes of the existing cut-and fill terraces where there was potential for imported fill and debris (trench and sample locations are shown on a plan Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
14 view map included in Appendix B). In addition, nine (9) exploratory borings were cored to evaluate a reported car burn area. Additional testing of COPCs included organochlorine pesticides, polychlorinated biphenyls, polynuclear aromatic hydrocarbons, and dioxins. 7 The work tasks and testing included:
• Debris Fill Areas: Backhoe trenching was used to provide additional assessment of slope debris areas which showed various levels of debris including tires, vehicle parts, and concrete. The assessment concluded that debris fill areas are typically located on steep slopes separating the terraces, which appeared to have been developed with (cut and) fill materials. • No Pesticides, PCBs or Dioxins: Additional testing for organochlorine (persistent) pesticides and PCBs indicated that tested soils did not contain contaminant concentrations above screening levels. In addition, worst-case testing for Dioxins (adjacent to a reported fire pit location) showed risk-based residential screening thresholds were not exceeded. • Shallow Soil Contamination: Stained surface soils at some locations contained concentrations of naphthalene, TPH-motor oil, Arsenic and Hexavalent Chromium above Tier 1 agency screening levels. Generally, elevated concentrations were localized and confined to shallow soil in the top two (2) feet bgs. Site-wide detections of Lead was the most widespread COPC. Statistical analysis of detected Nickel, Hexavalent Chromium and Arsenic indicated concentrations were at conditions (see Section 3.5, below).
• Adjoining Perimeter Land: Perimeter land beyond the north and east boundary of the planned development is protected as part of the Watsonville Slough riparian protection setbacks (see Figure 3). This parcel is targeted for development as a public pathway and bird watching area (separate from the current residential development). Observations of trenches completed as part of the 2016 assessment showed some debris fill and soil impacts that exceeded agency screening.
This perimeter land is located in protected, sensitive habitat and further delineation sampling has recently been completed in accordance with an agency-approved Workplan (WHA, 2018). The perimeter walkway lands area will remain accessible for any necessary remedial actions during development activities that may be necessary, and upon approval of the California Department of Fish and Wildlife (CDFW).
7 : Note: Boring logs show indicate that Trinity defined their measured sample collection depth to be the base of their sample (i.e., a “two-foot” deep sample was actually collected from 1-ft, 6-inches to 2-ft). The sample depths for the three other phases of soil sampling (2004 & 2016) are measured from the starting point (i.e., a “two-foot” deep sample was collected from 2-ft to 2-ft, 6-inches). In either case, remediation will extend to the more conservative depth and this Remedial Action Plan has been updated accordingly.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
15 3.5 Support Documentation: Statistical Evaluation of Naturally-Occurring Metals (TH&Co, 2018)
Thomas Harder and Company (TH&Co), an experienced toxicological and groundwater modeling firm, completed a statistical evaluation of Arsenic, Hexavalent Chromium (Cr[VI]), and Nickel was completed using a multiple-lines-of-evidence approach to establish whether detected concentrations indicate background conditions or a Site-related release of these metals (a copy of the statistical evaluation is included in Appendix C as a reference). The analysis was conducted to determine whether or not concentrations of these naturally-occurring metals indicated a chemical release, thereby making them ‘chemicals of potential concern’ (COPCs), and ultimately included in quantitative risk calculations.
The statistical analysis presented was conducted in accordance with CalEPA and USEPA guidance using USEPA’s statistical software ProUCL. The statistical evaluation concluded that based on the population of naturally-occurring metal concentrations detected in soil during multiple investigation mobilizations, there were no Site-related chemical releases of Arsenic, Cr(IV), and Nickel at the Site. A summary of the analysis is presented below:
• Site-Specific Arsenic Detections: The data evaluation of sixty (60) samples showed a relatively narrow range of Arsenic concentrations (0.6 to 14 mg/kg) having a relatively low coefficient of variation (0.482). Additionally, box and Q-Q plots (visual analyses) showed the Site’s Arsenic dataset followed a normal distribution with relatively few potential outliers (i.e., four samples at 11 mg/kg, and one sample at 14 mg/kg). A follow-up statistical (quantitative) analysis of the visual plots (i.e., a Rosner Test, ProUCL) did not identify any outliers in the Site’s Arsenic dataset so no outliers were removed from the Site’s Arsenic dataset. o The Site-specific Background Threshold Value (BTV), quantified as the 95% USL (13.97 mg/kg), is essentially equal to the maximum detected concentration (14 mg/kg). The analysis concluded that a Site-related release of Arsenic has not occurred, and Arsenic is reasonably is eliminated as a COPC. As noted, Appendix C contains a copy of the analysis as a reference.
• Site-Specific Hexavalent Chromium [Cr(VI)] Detections: The data evaluation of twenty-three (23) samples showed a relatively narrow range of Cr(VI) concentrations (0.61 to 4.9 mg/kg); having a coefficient of variation of 1. Additionally, visual (Box and Q-Q plots) and quantitative analyses (Dixon’s Test, ProUCL) showed the log-transformed Cr(VI) Site dataset to contain no statistical outliers.
o The site-specific Background Threshold Value for Cr(VI), was quantified as a) 6.1 mg/kg for the 95% USL, and
b) 5.2-5.3 mg/kg for a more conservative gamma distribution analysis.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
16 Both BTV thresholds exceed the maximum detected Cr(VI) concentration (4.9 mg/kg), which indicates that a Site-related release of Cr(VI) has not occurred, and Cr(VI) is reasonably is eliminated as a COPC. Appendix C contains a copy of the analysis as a reference. • Site-Specific Nickel Detections: The data evaluation of ninety-six (96) samples showed the Nickel dataset to follow a normal distribution with potential outliers of 0.76 mg/kg (one sample) and 150 mg/kg (two samples) and have a coefficient of variation of less than 1. Additionally, visual (Box and Q-Q plots) and quantitative analyses (Rosner’s Test, Pro UCL) showed an approximate normal distribution site dataset with no statistical outliers. o The site-specific Background Threshold Value for Nickel was quantified as the 95% USL (168.1 mg/kg), which exceeds the maximum detected concentration (150 mg/kg). The analysis concluded that a Site-related release of Nickel has not occurred, and Nickel is reasonably is eliminated as a COPC. As noted, the full analysis is included in Appendix C as a reference.
3.6 Transport Modeling (TH&Co, 2021)
In order to defensibly demonstrate long-term protection of shallow groundwater underlying the Site with respect to remedial alternatives that potentially could include the on-site burial of metal and petroleum hydrocarbon impacted soils, an experienced groundwater risk modeling consultant evaluated contaminant transport. Transport modeling evaluated the potential for vertical migration, predications of travel time, and the potential for future concentrations of solute COPCs to affect groundwater beneath the subject property (TH&Co, 2021). The transport modeling evaluated forecasts of both travel time and future concentrations of the Site COPCs [lead, total petroleum hydrocarbons as diesel (TPHdiesel), and as motor oil (TPH-motor oil), and naphthalene] to potentially impact groundwater beneath the subject property. The complete transport modeling report is in included as Appendix C.
As part of the analysis, additional samples were collected from native soils and analyzed at a materials testing laboratory (Cooper Testing Laboratory) for grain size classification, hydraulic conductivity and permeability. The results provided site-specific input parameters for the selected leachability model (VLeach) as well as conservative assumptions to evaluate for worst case scenarios (i.e., assumes that the reinforced concrete cap/cover would impede only 50% of the Watsonville area precipitation which reasonably would also account for potential leakage from utilities). The model calculations verified potential migration of COPCs through the soil column would be extremely slow. Specifically, the report concluded:
The burial and engineered cap/cover system as modeled shows that migration of the COPC towards the water table will occur at exceedingly slow rates thus leading to exceedingly long times for which the system will not impact groundwater.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
17 The time required for the Site’s relatively low concentration COPCs to migrate from the base of the impacted zone to the underlying water table (i.e., the ‘travel time’) is predicted to exceed 1,000 years for all COPCs.
Given that groundwater MCLs will not be exceeded for all COPC except for TPH-d, and then only after the very long model-predicted travel times presented (i.e., > 1,000 years), any impact is projected to be inconsequential.
As such, it is reasonable to conclude that any engineered system that will not adversely impact the resource of interest (i.e., groundwater) for so many years should be considered sufficiently designed and protective.
As a reference, the engineered retaining wall details as well as a supplemental Geotechnical Evaluation for the Hillcrest Residential Subdivision (MPE, 2022) is included as Appendix H.
3.7 Summary of Soil and Groundwater Testing
Residual contaminants that have been characterized through multiple rounds of soil and groundwater sample collection and testing. These investigations included laboratory analysis of 249 soil samples collected from 145 locations across the Site (all samples results are presented on Tables 1-4 and presented in plan view on Figure 3). Investigation results indicated:
• Grab groundwater samples collected from fourteen (14) locations cored around the site, as well as the on-site domestic water supply well, were not impacted by current/historical land-use activities.
• Long-term land-use impacts have not caused significant negative impacts to Site soils. Summary tables of the multiple environmental investigation results (Tables 2, 3, and 4) show that impacted soils are generally limited to the top one to two feet bgs and COPCs are typically localized in isolated areas. Four COPCs were identified based on concentration exceedances of conservative, Tier-1 agency-established thresholds that are designed to be protective of human health and the environment (i.e., the RWQCB-ESLs). These four COPCs include: Lead (up to 5,400 mg/kg), TPH-diesel (up to 670 mg/kg), TPH-Motor Oil (up to 97,000 mg/kg), and Naphthalene (up to 1.5 mg/kg). However as noted above, the preponderance of elevated detections are largely limited to shallow depths (<2 feet).
• Soil vapor is not considered a transport pathway of concern since test results showed only trace to non-detectable concentrations of volatile contaminant compounds were detected in soils (no volatile compounds have been identified as COPCs.
• A statistical evaluation of the collected lab data calculated Background Threshold Values for Arsenic, Cr(IV), and Nickel are 13.97, 5.2 mg/kg, and 168.1 mg/kg, respectively. The analysis Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
18 concluded that based on the population of soil sample concentrations, Site-related releases of three naturally occurring metals (Arsenic, Cr(IV), and Nickel) have not occurred at the Site. • The statistical evaluation of potential migration of the site COPCs vertically towards the water table has shown it will only occur at extremely slow rates meaning the COPCs will not impact groundwater in any reasonable timeframe. Therefore, a remedial alternative that includes of on-site burial with an engineered cap/cover system (with a 15-foot separation to groundwater) is a reasonable and viable option.
A detailed description of all sampling mobilizations and State-certified laboratory testing results is provided in Appendix B.
4.0 NATURE AND EXTENT OF CONTAMINATION
As noted, Table 1 presents the chronological list of samples obtained at the Site (original consultant ID), the quadrant where the sample is located, and the updated, quadrant-based sampling ID (updated sample ID). Figure 3 presents sample location by quadrants (A through E on the north-south axis, and #1 through 7 on the east-west axis). State-certified laboratory results of soil sample locations that are in exceedance of screening thresholds (i.e., ESLs/Background Threshold Values) are presented on Figures 4a and 4b and the results have been tabulated onto summary Tables 2 through 4.
The laboratory results confirm that four contaminants [Lead, Extractable-range TPH (as diesel and motor oil), and Naphthalene] are present in the top two feet of surface soils at concentrations exceeding Tier 1, risk-based, soil screening thresholds. Exceedances are also present at localized deeper locations associated with historic automotive salvaging land-use.
4.1 Overview of Chemicals of Concern
Elevated Shallow Soil Detections of Lead, TPH-diesel, TPH-motor oil, and Naphthalene (Tables 2, 3, and 4 and Figures 4a and 4b): Laboratory results document there are localized on-site areas that contain COPCs at concentrations exceeding risk-based screening threshold concentrations for residential land use (i.e., the established RWQCB-ESL/Background Threshold Value threshold limits for unrestricted land use). Locations where threshold exceedances occur generally are limited to the upper two feet of soil and are highlighted on the summary tables (Tables 2 and 3 for metals, and Table 4 for remaining volatile and semi-volatile testing results) and the following figures:
• Figure 3 shows the location of all soil samples collected; • Figure 4a highlights those locations having detected exceedances in the upper two feet of soil; - Note: many of these locations have co-located COPCs that will all be eliminated with the planned removal and disposal of the upper two feet of soil.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
19 • Figure 4b highlights those locations having detected exceedances at depths equal to or deeper than two feet below ground surface (bgs). Note: limited over-excavation is planned for these locations and confirmatory base/sidewall samples will be collected to confirm no exceedances are present following soil removal.
• Figure 4c is an extension of Figure 4b but also includes additional locations where there was a shallow ESL/Background Threshold Value exceedance without a deeper confirmation sample. As with those sample locations presented in Figure 4b, deeper confirmatory soil samples will be collected to confirm no exceedances are present following soil removal.
The summary table below presents the concentration ranges for these COPCs, the location containing the highest concentration, and the Site-specific cleanup standards based on either: a) agencyestablished Tier 1 thresholds [i.e., quantitative, worst-case, risk-based guidance based on multiple pathways that include potential threats to groundwater (leaching), human health (ingestion, inhalation, dermal), and ecological (surface soils, surface waters)]; or the site-specific, Background Threshold Value (BTV) for naturally occurring metals.
Chemicals of Potential Concern (COPC)
Concentration Ranges & Screening Thresholds
Soil concentration units in milligrams per kilogram (mg/kg) Chemical Of
Potential Concern
Minimum
Concentration
(mg/kg)
Maximum
Concentration
(mg/kg)
Depth (& Location)
of the Highest
Concentration
Screening Threshold
(residential land use)
Arsenic 0.60 14 Debris (“T-18”)
13.97 mg/kg
(basis: BTV)
Hexavalent
Chromium [Cr(IV)] 0.61 4.9 3-ft (“T-13”)
5.2 mg/kg
(basis: BTV)
Lead 1 5,400** 0.5-ft (“B-68”) 80 mg/kg
(basis: RWQCB-ESL)
Nickel 0.76 150 0.5-ft (“B-11”) 168.1 mg/kg
(basis: BTV)
TPH- Diesel 1.1 670 0.5-ft (“B-11”) 230 mg/kg
(basis: RWQCB-ESL)
TPH- Motor Oil ND 97,000 8-ft (“T-16”) 5,100 mg/kg
(basis: RWQCB-ESL)
Naphthalene ND 1.5 1.5-ft (“B-3”) 0.033 mg/kg
(basis: RWQCB-ESL)
RWQCB-ESL = Environmental Screening Level (see Table 2 for additional details).
BTV = Background Threshold Value (see Section 3.5, above for discussion of background analysis). ** = Note: This result was a 3-point composite sample. The three individual samples were then analyzed separately, and the Lead concentrations dropped to a range of 100-480 mg/kg.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
20 Anomalous Detections: There were two (2) exceedances of cobalt that were detected at concentrations slightly above its screening threshold of 23 mg/kg [i.e., 28 mg/kg at T-18@surface (“debris”); and 26 mg/kg at B-24@2-ft]. Note: both were co-located other contaminant impacts and are considered anomalous based on the numerous additional test results that were below agency thresholds (see Table 2). Confirmation samples will be obtained at these apparently anomalous detection locations.
5.0 REMEDIAL ACTION OBJECTIVE
The Remedial Action Objective (RAO) for this Site has been designed to abate potential health risks resulting from the identified COPCs to be protective of the current and reasonably anticipated future uses of the Site. Risk-based and background-based remedial criteria have been evaluated to establish specific concentration goals that are protective of human health and the environment (i.e., established screening level and anthropogenic concentrations that can safely be left in place). Risk-based cleanup will be based on the proposed residential land-use of the Site, specifically, the Hillcrest Development which will contain a 144 residential units and associated road-ways, sidewalks, and utility services. A discussion of human health risks, regulatory requirements, and the remedial action objective developed for the Site is presented below.
5.1 Remedial Action Objective
The Remedial Action Objective (RAO) for this redevelopment project is to reduce, minimize, or eliminate potential exposure of future residents (receptors) including future Site workers to COPCs detected at the Site that may pose an unacceptable human health risk [defined as less than one-in-one million Incremental Lifetime Cancer Risk (ILCR)], or excess of Background Threshold Value (BTV) concentrations.
5.2 Applicable or Relevant and Appropriate Requirements The remedial action objective must be consistent with Applicable or Relevant and Appropriate Requirements (ARARs), based on federal guidelines derived from the National Oil and Hazardous Substances Pollution Contingency Plan (NCP, 40 CFR Section 300.5). Applicable requirements are remedial standards, standards of control, and other substantive requirements, criteria, or limitations promulgated under federal or state law that specifically address a hazardous substance, pollutant, remedial action, location, or other circumstance at a Site.
Generally speaking, ARARs are remedial standards, standards of control, and other substantive environmental protection requirements, criteria, or limitations promulgated under Federal or State law that, while not "applicable" to a hazardous substance, pollutant, contaminant, remedial action, location, or other circumstance at a Site, address problems or situations sufficiently similar to those encountered at the Site, that their use is well-suited to the particular Site. ARARs may be categorized as chemicalspecific, location-specific or activity-specific.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
21 • Chemical-specific ARARs are health- or risk-based standards that define the allowable limits of specific chemical compounds found in or discharged to the environment. • Location-specific ARARs apply to natural site features (e.g., wetlands, flood plains, endangered species) and manmade features (e.g., landfills, city zoning, places for historical or archaeological significance
• Activity-specific ARARs are technology-based or activity-based limitations that set performance and design restrictions.
Federal and State non-promulgated standards, policies, or guidance documents, and legal requirements, are not ARARs. However, according to NCP guidance, these criteria should also be considered when evaluating and selecting remedial actions necessary to protect human health and the environment and are commonly referred to as “To Be Considered” or TBCs. All necessary permits and approvals identified in this Renewed RAP will be obtained prior to any removal activities. Specifically, Hillcrest Subdivision Development or its contractor will obtain a grading permit from the City of Watsonville prior to the commencement of grading and removal activities under this Renewed RAP. The grading permit will require compliance with an approved grading plan and standard permit conditions, including:
• Construction Noise – Compliance with City Code construction noise requirements and construction activity scheduling limitations.
• Air Quality – Implementation Air Quality Management District best management practices to address fugitive dust emissions, localized dust impacts, and construction noise and nuisance impacts.
• Hydrology and Water Quality – Compliance with City of Watsonville Standard Conditions of Approval and the General National Pollutant Discharge Elimination System (NPDES) Storm Water Permit for Construction Activities, including preparation of a Storm Water Pollution Prevention Plan and Erosion Control Plan.
Upon approval from SC-HSA, and issuance of a grading permit, excavation activities will be performed by a California licensed contractor with a hazardous substance removal certification. A California‐licensed geologist or civil engineer from Weber Hayes and Associates will be available for all environmental monitoring including for continuous fugitive dust monitoring, confirmation sampling, and project documentation. In the event that a previously unidentified environmental concern is discovered at any time during the planned remedial action or subsequent Site redevelopment, the owner will notify SCHSA, and take necessary response actions as required by SC-HSA.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
22 5.3 Site-Specific Remedial Criteria
Risk-based, “Site-Specific Remedial Criteria” is a phrase used to describe the rationale behind the selection of Site cleanup goals. As described in Section 2.4 (Environmental Screening Levels), established, risk-based screening limits are used for this project, such as the State Environmental Screening Limits (RWQCB-ESLs, RWQCB-SFB, 2019) and the DTSC-modified Screening Levels (DTSCmodified SLs, DTSC 2020), and the Federal counterpart, the EPA’s Regional Screening Limits (RSLs; USEPA, 2021). These screening levels are developed by integrating standard toxicological parameters such as: a) target risk levels, b) assumptions concerning exposure, c) exposure estimation, and d) compound-specific toxicity values to obtain a chemical concentration that can be present in soil without creating an excessive likelihood of adverse health effects assuming exposure to affected soils.
As described in Section 3.5 (Statistical Evaluation of Naturally-Occurring Metals), we have calculated the Background Threshold Values for Arsenic, Cr(IV), and Nickel, and selected risk-based thresholds for all other contaminants of potential concern we have selected the Environmental Screening Level (RWQCBESL) as the basis for establishing defensible, risk-based cleanup goals for the identified COPCs at the Site.
Site Numerical Remedial Criteria (cleanup goals) for Soil Based on Environmental Screening Levels &
Background Threshold Concentrations for Arsenic, Hexavalent Chromium, and Nickel Chemical Remedial Criteria for Site Soils
(mg/kg)
Arsenic 13.97 mg/kg Basis: BTV
Cr(IV) 5.2 mg/kg Basis: BTV
Total Lead 80 mg/kg Basis: RWQCB-ESL (health-risk)
Nickel 168.1 mg/kg Basis: BTV
TPH-diesel 230 mg/kg Basis: RWQCB-ESL (health risk)
TPH-motor oil 5,100 mg/kg Basis: RWQCB-ESL (leaching)]
Naphthalene 0.033 mg/kg Basis: RWQCB-ESL (leaching)]
RWQCB-ESL = Environmental Screening Level (see Table 2 for additional details).
BTV = Background Threshold Value (see Section 3.6, below for discussion of background UCL-95% analysis).
5.4 Additional Statistical Evaluation of COPC Risk
As shown above, the four (4) COPCs include Total Lead, TPH-diesel, TPH-motor oil, and Naphthalene.
The residential and construction worker ESLs for lead (80 and 160 mg/kg, respectively) are associated with blood lead levels calculated using a blood Lead model (LeadSpread Model) developed by the CalEPA/OEHHA/DTSC, rather than the standard USEPA algorithms. As such, the risk values associated Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
23 with Lead are neither calculated nor combined with that for the other COPCs but rather a direct comparison to the ESLs is conducted (i.e., comparison of detected concentrations to the residential (80 mg/kg) and construction worker (160 mg/kg) ESLs for Lead].
5.4.1 COPC Cumulative Non-Cancer and Cancer Risks
For the three remaining COPCs, TH&C computed the cumulative noncancer (Hazard Index, HI) and cancer risks (Incremental Lifetime Cancer Risk, ILCR) for both the residential receptor and the construction worker receptor based on direct soil exposure (i.e., via incidental ingestion, dermal contact, and particulate inhalation). Copies of the sample-specific risk tables are included as a reference in Appendix C, which include:
• Residential Receptor:
o Cumulative noncancer (Table 1a);
o Cumulative cancer (Table 1b) risks; and
o Total Lead Concentration Comparison (Table 3a).
Summary Table 1a shows there are six instances in which the HI value exceeds 1.0. As shown in Table 1b, the maximum ILCR value (5 x 10-7) is less than the de minimis level of 1 x 10-6. • Construction Worker Receptor: Cumulative noncancer (Table 2a) and cancer (Table 2b) risks; o Cumulative noncancer (Table 2a);
o Cumulative cancer (Table 2b) risks; and
o Total Lead Concentration Comparison (Table 3c).
Summary Table 2a shows there is a single instance where the HI value exceeds 1.0 (T-16(t)). The HQ values at this location is driven by TPH-motor oil and the risk-driving exposure pathways are soil ingestion and dermal contact. As such, precautionary measures associated with these pathways near this location may be warranted. As shown in Table 2b, the maximum ILCR value (4 x 10-9) is less than the de minimis level of 1 x 10-6. An ILCR value less than the de minimis level is generally considered to be without potential adverse health effects.
The fact that the vast majority of the TPH/naphthalene and lead-impacted soil is confined within the upper 2 feet provides the basis for the removal depth of 2 feet. Over-excavation and subsequent confirmation sampling will be conducted at locations where the base sample exceeds the ESL or is not vertically defined (i.e., Figures 4b and 4c)
Note: Cumulative risk and hazard calculations for arsenic, chromium VI, and nickel were not done as a statistical background evaluation indicated they detected concentrations were not indicative of a Siterelated release and they can reasonably be eliminated as COPCs (details in Section 3.5).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
24 5.4.2 COPC Evaluation of 95% UCL Cumulative Risks
In addition, exposure point concentrations of the Chemicals of Potential Concern (other than Lead) were also evaluated for cumulative risks and hazards using calculated 95%UCL8 concentrations rather than individual sample concentrations (2018, TH&Co, copy included in Appendix C). TH&Co’s sample-specific risk tables (copies included in Appendix C) show that TPH-Diesel, TPH-Motor Oil, and lead exceed risk benchmark levels for some samples. The 95% UCLs for these three COPCs were calculated using the USEPA ProUCL model (rounded to the nearest mg/kg) are:
Chemical 95% UCLs
(mg/kg)
Residential Land Use
Human Health
Risk-Based Benchmark Levels
TPH-Diesel: 98 mg/kg; 230 mg/kg Basis: RWQCB-ESL (health risk) TPH-Motor Oil: 5,143 mg/kg; 11,000 mg/kg Basis: RWQCB-ESL (leaching)] Total Lead 220 mg/kg. 80 mg/kg Basis: RWQCB-ESL (health-risk) The table shows that Lead is the only COPC with a 95% UCL that exceeds its risk benchmark. Use of a 95% UCL would eliminate risk concerns associated with TPH-Diesel and TPH-Motor Oil.
In addition, sample locations were there were elevated concentrations of COCPs (i.e., hot spots) were further evaluated by TH&Co. Specifically, charts were generated for TPH-Motor Oil and Total Lead that quantitatively and visually show the decreasing 95% UCL concentrations associated with sequential hot spot removals (i.e., soil removal of the highest contaminant concentration first and then the next highest concentration, etc.). Clips of these charts showing incremental hot spot removals and the resulting 95% UCL are shown below for both TPH-Motor Oil and Lead (see Appendix C for the originals) 8 : Upper Confidence Limit (UCL): The upper boundary (or limit) of a confidence interval of a parameter of interest such as the population mean
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
25 The TPH-motor oil chart (above) shows that for the entire dataset (blue) and the 95% UCL (5,143 mg/kg) does not exceed either risk-based ESL threshold of 11,000 mg/kg.
This chart shows that if the two highest TPH-Motor Oil concentrations are removed (both hot spot concentrations exceed the residential ESL), then:
• The resulting dataset has a maximum concentration of 5,500 mg/kg, and • The 95% UCL decreases from 5,143 to 648 mg/kg
Additional hot spot removals result in comparatively negligible decreases in the 95% UCL.
The Total Lead chart (above) shows that for the entire dataset (blue) and the 95% UCL (220 mg/kg) does exceed the risk-based ESL threshold for residential land use (80 mg/kg) as well as the construction worker (160 mg/kg). This chart shows that if the two highest Total Lead concentrations are removed (i.e., 5,400 & 3,200 mg/kg) then:
• The resulting dataset has a maximum concentration of 1,100 mg/kg, and • The 95% UCL decreases from 220 to 69 mg/kg (which is below the risk-based ESL for both residential & construction worker.
Additional hot spot removals result in comparatively negligible decreases in the 95% UCL.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
26 • Shallow Soil Contamination (less than 2 feet):
- Total Lead, TPH-diesel, TPH-motor oil, and Naphthalene: Based on multiple environmental investigations, shallow soil remediation (<2 feet bgs) will be required across the entire Site to achieve unrestricted land use based on the remedial screening criteria (i.e., residential Environmental Screening Levels or Background Threshold Values -elevated shallow impacts are shown on Figure 4a). The ESLs for these four (4) constituents are the proposed clean-up goals for remedial activities.
• Deeper Soil Contamination:
- Total Lead, Naphthalene, and TPH-diesel/Motor Oil: Field investigations indicate that localized, isolated areas of deeper contamination are present around areas of historic highuse operations (see Figure 4b). Any area having a documented exceedance of the established cleanup goals will be over-excavated and confirmation samples obtained in accordance with SC-HSA Site Mitigation Program Standards (SC-HSA, 2010), to confirm residual soils have achieved the established cleanup goals (i.e., residential Environmental Screening Levels).
The goal of proposed remedial actions will reduce/eliminate potential for increased health risks posed by the COPCs detected in Site soils to future users of the Site that may be exposed to the Site soils. This Renewed RAP focuses remedy selection on the planned use of a Site (i.e., long term, residential housing, native soil areas, roadways, pedestrian pathways, and associated residential housing appurtenances).
Cost-effective remedial action options can best be combined with Site redevelopment, which is planned to include extensive grading to lower the upper elevations at the Site (design plans show there will be a significant surplus of soils that need to be exported from the Site). Current plans are to complete any remedial action plan earthworks as part of the larger phase of Site redevelopment, which will include mass grading of the existing knoll to create buildable terraces.
Based on the relatively random, shallow contaminant exceedances detected across the Site that are associated with Site-wide historical land use as an automotive wrecking/storage yard, remedial efforts will include shallow soil remediation across the entire Site to conservatively address any missed shallow soil impacts (i.e., address the upper 2 feet of soils across the Site, some additional, deeper excavation, and soil removal from a limited number of isolated “hot spot” areas having documented deeper contamination (Figure 4b). Statistical evaluation described above (i.e., UCL-95%, and cumulative risk analysis) clearly show that removal of the upper two-feet of soil and isolated hot-spots will eliminate both site-wide risk, and potential isolated risk.
A remedial effort designed to reduce elevated concentrations of COPCs present in shallow soils and at isolated locations having deeper contamination (“hot spots”) is protective of human health and safety.
As per standard remedial action plan evaluation protocols, the following section describes a number of Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
27 potential remedial technologies and screens them based on effectiveness, implementability, and cost to satisfy the RAO.
6.0 FEASIBILITY ANALYSIS
6.1 Remedial Action Alternatives
Given Site-wide shallow soil contamination of relatively immobile COPC, localized deeper zones containing elevated COPCs, and no impacts to groundwater that are present at the Site, the following three (3) remedial action alternatives were identified as reasonable per Site-specific conditions and include:
1. Alternative 1: No Action (baseline conditions with institutional control)
2. Alternative 2: Site-wide Shallow Soil Excavation (2-feet), Targeted Deeper Excavation and OffSite Disposal.
3. Alternative 3 (Burial Envelope with Soil Cap and Off-haul): Off-haul and landfill disposal of approximately 17,200-yd3 of shallow contaminated soils, the on-site consolidation/burial of approximately 18,000-yd3 of shallow contaminated soils (non-hazardous) beneath an isolated, capped roadway/parking area in the northeastern corner of the development
6.1.1 Alternative 1 - No Further Action
The No Action alternative was evaluated (as required under the NCP) to provide a baseline to which the relative benefits of the other alternatives could be compared. This alternative would not require implementing any measures at the Site, and no costs would be incurred. This action would include institutional controls (deed restriction), no treatment of soil, no sampling, and no monitoring. However, this alternative does not involve any mitigation of the hazard.
The Land Use Covenant (LUC) would run-with-the-land and would be required to document existing conditions and future soil management obligations. The LUC would be an agreement between SC-HSA and the property owner and recorded with the Santa Cruz County Recorder’s Office to ensure that local agencies, the public, prospective purchasers and tenants are aware of residual, left in place soil contamination at the Site. The LUC is considered an institutional control that is used as a means to limit particular redevelopment activities without preapproval by SC-HSA. Restrictions could include limiting land use to commercial-only redevelopment (i.e., no hospitals, day cares, schools, or single-family residential). The LUC would require adhering to a Site-specific Soil Management Plan that places notification and monitoring restrictions on earthworks activities involving excavation/trenching (i.e., for utilities, foundations, grading, and subgrade construction such as an underground parking garage). Soil Management Plans typically require notification and approval by SC-HSA prior to earthworks in areas having residual COPC impacts and could involve annual submittals (inspection forms) confirming no disturbance has occurred over the reporting year.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
28 6.1.2 Alternative 2 - Site-wide Shallow Soil (2-feet) Excavation & Targeted Deeper Excavation and Disposal
Overview: This alternative involves the excavation of soil from across the entire Site to eliminate all potential locations having shallow COPC-impacts in soils (see Figure 4a-4b for documented, COPCimpact locations). Excavation would be conducted over an approximately 11.3-acre Site to a depth of 2 feet below ground surface. As discussed in Section 5.0 (Remedial action Objective), the depth of 2 feet is based on the results of soil sampling that has been performed during multiple Site investigations and the relatively random, shallow contaminant exceedances detected across the Site that are associated with Site-wide historical land use as an automotive wrecking/storage yard. The primary goal of excavation and removal is to remove soils having COPCs concentrations that exceed the cleanup goals presented in Section 5.3 (Site-Specific Remedial Criteria).
It should be noted that current remedial efforts along the existing slough (i.e., perimeter path) will be restricted until CDFW permits are acquired for that area (targeted for Spring-Summer 2022). A Perimeter Path Remedial Action Plan will be completed that will provide safe recreational conditions for this public accessway.
Excavation & Soil Removal (see Site Environmental Grading Plan, Figure 5 for details). This alternative combines two phases of work:
• Phase I(a) Soil Removal: A total of 1,500-yd3 of the 35,200-yd3 of soil targeted for remediation (i.e., upper two feet of soil from across the site) has been characterized as hazardous and will be excavated and transported to Kettleman Class I Landfill in Kettleman City. These limited areas are in the southwest corner of the site and shown on the Site Environmental Grading Plan, Figure 5).
• Phase I(b) Soil Removal: All remaining soils to be remediated are characterized as nonhazardous, with relatively low-concentration contaminants. Initial work will involve grubbing, scraping of the initial 6-inches of soil, and removal of any buried debris that is uncovered during the initial grading of soils across the Site. This phase of soil removal is estimated to generate approximately 8,240-yd3 (~11,500 tons; based on 1 yd3 = 1.4 tons) of soil. These soils have been profiled for acceptance at a local, non-hazardous Class III landfill (John Smith Landfill, and/or Waste Management’s Kirby Canyon Landfill). The handling of soils is described in the Soil Management Plan (Appendix D). Soils will be stockpiled or hot loaded directly onto trucks for transport to the accepting landfill.
The goal behind this initial round of surface soil removal (upper 6-inches) is to remove the worst-case impacts for landfill acceptance and provide a more transparent, unobstructed view of the underlying soils (and debris). Any accessible debris would be unearthed and separately Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
29 stockpiled and any areas where chemical staining or odors would be mapped and targeted for further assessment.
• Phase I(c) Additional Soil Removal: This is a follow-up excavation second step to Phase I(B) and would involve grading off and additional 18-inches of soil from across the entire Site and stockpiling it in pre-planned locations (see Site Environmental Grading Plan, Figure 5). This phase of soil removal is estimated to generate approximately 25,460-yd3 (~35,600 tons) of soil which has been pre-profiled for landfill acceptance. Soil would be either hot loaded directly onto trucks (or stockpiled in accordance with Soil Management Protocols, Appendix D) and all trucking would be manifested for project documentation.
In addition, deeper excavations would be completed if any visibly-impacted areas were discovered (i.e., any soils with chemical staining/odors) as well as at a limited number of locations where previous testing showed deeper contamination (Figure 4c). Specifically, deeper excavations will dig until no visible signs of contamination are present, or one foot below the sample depth of detected COPC in exceedance of regulatory screening levels.
Confirmation Sampling: Confirmation samples will be collected from the base of the deeper excavations and side-walls in accordance with SC-HSA Site Mitigation Program Standards (SC-HSA, 2010). In addition, at the completion of grading in each of the ten (10) Site subareas, confirmation base samples will be collected to confirm that removal goals have been achieved (see Stockpile Plan & Confirmation Testing Grid, Figure 7).
• Specifically, two (2), 4-point composite samples per subarea will be tested for the full range of COPCs previously detected in that subarea.
• The two (2), 4-point composite samples (8 samples per subarea) will be collected equidistantly throughout the subarea. The State-certified testing laboratory will complete the compositing at their facility. If the composite sample COPC concentration exceeds ¼ the value of applicable screening threshold (i.e., ESL or BTV), then each of the four discreet samples comprising that composite sample be independently analyzed. Additional soil removal will be completed until screening thresholds are achieved.
Earthworks, Stockpiling and Landfill Disposal: Soil removal would be accomplished using conventional grading equipment. Standard dust suppression methods, stockpiling, and storm water best management practices would be incorporated into the soil removal activities, as required by the grading permit. A stand-alone, environmental Site Safety & Dust Monitoring Plan is included as Appendix D along with soil management protocols, which addresses contaminant earthworks and sampling activities conducted within impacted areas and monitoring protections for construction workers & off-site receptors. Site safety includes continuously recorded dust monitoring in the work area and along the property line for monitoring particulate and respirable dust and calculated particulates concentrations for Chemicals of Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
30 Potential Concern. This plan would complement the earthworks contractor’s standard of care safety plan for normal heavy equipment earthworks. It is anticipated that initial Phase I(a & b) earthworks implementation would take three weeks to complete and the Phase I(c) earthworks another 4 weeks to complete.
• Weber, Hayes and Associate staff would coordinate soil handling with the selected haz-certified contractor (grading, excavation, loading and stockpiling). For any soils stockpiling, the materials will be stockpiled in pre-planned locations (see Site Environmental Grading Plan, Figure 5) and handled in accordance with standard of care soil protocols as described int the Soil Management Plan (Appendix D). The certified hazardous waste materials operator would manage the means and methods of the earthworks activities for the loading and transport of Site soils.
This remediation alternative would remove soil contaminants to below clean-up goals that are protective of human and environmental health. Confirmation sampling would document a baseline of clean soils, so clean surplus soils could be used for: (1) terrace regrading operations on-site, (2) clean alternative daily cover material for a landfill, and/or reuse at an off-site location (i.e., landfill/private property).
We would employ this representative, confirmation sampling strategy to characterize deeper Site soils (i.e., below the maximum depths of well characterized shallow soil impacts) for reuse as “clean” material to be used for the proposed soil cap. Results of a “clean” soil baseline will be communicated SC-HSA staff for obtaining surplus soil reuse approval.
6.1.3 Alternative 3 - Burial Envelope with Soil Cap and Off-Haul This remedial option includes off-haul of approximately half of the impacted soils and consolidating and emplacing a volume of non-hazardous, contaminated soil within an engineered cap area located beneath a street and parking area in the northwest corner of the development. Specifically, this alternative includes:
1. The off-haul and landfill disposal of approximately 17,200-yd3 of shallow contaminated soils. The excavation and off-haul operations would follow protocols described in Alternative 2 (above, see Section 6.1.3).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
31 2. In accordance with State Department of Toxic
Substances’ Control remediation guidance,
consolidation and on-site burial of approximately
18,000-yd3 of shallow contaminated soils (nonhazardous) beneath an isolated, capped roadway/parking area in the northeastern corner
of the development (see blue-shaded, capped
area, right), and emplacement of a clean,
impervious cap (i.e., final cap surface is to be
reinforced concrete) above the AOC-buried soils.
And,
3. Implementation of a Land Use Covenant that
includes requirements for standard of care
monitoring and a Post-Construction Site
Management Plan detailing agency notification
and soil handling obligations for future cap or
utility repairs.
The proposed AOC approach of consolidation and capping is an accepted methodology for the remediation of these relatively low-concentration contaminants, as per guidelines established by California Department of Toxic Substances (DTSC, 2008). The proposed consolidation and isolation (capping) of existing urban-impacted (non-hazardous) soils will completely eliminate potential exposure to future onsite receptors or the environment in order to safely facilitate the planned transition to residential land use.
In addition, transport modeling confirms that the engineered consolidation and capping of residual contaminant concentrations is protective of biotic and water resources (i.e., no significant impact). As described in Section 3.6 (Transport Modeling), an experienced groundwater risk modeling consultant evaluated the potential for vertical contaminant transport to demonstrate long-term protection of shallow groundwater underlying the Site with respect to the capped mediation pit of buried, impacted soils. The modeling evaluated the potential for contaminant vertical migration, predications of travel time, and the potential for future concentrations of solute COPCs to affect groundwater beneath the subject property (TH&Co, 2021). The model used conservative assumptions to evaluate for worst case scenarios (i.e., assumes that the final cap surface of reinforced concrete would impede only 50% of the Watsonville area precipitation which reasonably would also account for potential leakage from utilities).
DTSC AOC guidelines do not preclude the installation of utility infrastructure beneath or within the capped footprint of residual, low-concentration contaminants. Additional protections can be put in place (i.e., impervious separation sheeting) but are not required. Protocols established in the See Figures 5 and 6 for Additional Details
Concrete Capped
Soil Mitigation Pit
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
32 Construction Soil Management Plan, (Appendix D) or the Land Use Covenant (i.e., the Post-Construction Environmental Site Management Plan) will be protective of residents and construction workers.
The model calculations verified that the potential migration of COPCs through the soil column would be extremely slow. Specially, the report concluded that the burial of the site’s non-hazardous, contaminated soils beneath an engineered cap/cover (i.e., the final cap surface is to be "reinforced concrete") does not have the potential to impact groundwater in over 1,000 years, and any impact is projected to be inconsequential. As such, it is reasonable to conclude that any engineered system that will not adversely impact the resource of interest (i.e., groundwater) for so many years should be considered sufficiently designed and protective. The complete transport modeling report is included as Appendix C.
• Remediation Pit Installation Details: Appendix A includes detailed earthworks plans provided by the project’s Civil Engineer (Ramsey, 2022), including details regarding the soil management (see detailed Notes and Soil Mitigation and Rough Grading Sequence, presented on the Environmental Grading Plan, Sheet C5.2, and the Remediation Pit Grading Plan, Sheet C5.1).
Grading, including excavation, fill activities and retaining wall installation are to adhere to the recommendations and requirements set forth by the project’s Geotechnical Engineer (MPE, 2021, and MPE, 2022) is included as Appendix H to provide supporting documentation of this engineered approach.
A separation geofabric or geogrid will be installed as a reference marker for future activities that will be used to differentiate soils within the remediation pit from non-impacted clean fill/native soils. There will be a minimum of 3 feet of overlap along seams of the separation fabric/grid.
Conceptual View of Surplus Soils, Topographic Depression in NW Corner, and Mediation Pit Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
33 The separation of capped, mitigation pit soils to groundwater is designed to be a minimum of 15- feet. Only soils designated as non-hazardous, will be placed within the confines of a surveyed, designated footprint, starting at an elevation of 26-ft above Mean Sea Level (26-FT MSL). This elevation is 15-ft above the groundwater high water mark of 11-ft MSL.
The soils burial chamber will be located within a topographic, natural depression in the that will be raised in compacted lifts. Note that the non-hazardous soil burial chamber is only a portion the buildup of this topographic depression (see Remediation Pit Grading Plan, Figure 6). The project development plan calls for a buildup of approximately 25-ftavg of compacted soils across this topographic depression to be emplaced in compacted lifts and held in place with engineered retaining walls (see graphic clip above that presents existing and development surfaces, including the remediation pit). Appendix H includes details regarding the engineered design specifications including compaction and construction requirements for the retaining wall that contains the remediation pit (i.e., 12-inch lifts compacted at 90% relative compaction). • Onsite Monitoring and Confirmation Sampling: Experienced, and registered environmental geologists and engineers from Weber, Hayes and Associates will manage all environmental aspects of this project including agency coordination, environmental site safety (including tail gate safety meetings to address contaminant construction worker & off-site receptor protection for earthworks and sampling activities conducted within impacted areas).
Site safety would include continuously recorded dust monitoring in the work area and along the property line for particulate and respirable dust and associated Chemicals of Potential Concern.
This environmental Site Safety & Dust Monitoring Plan (Appendix D) would complement the earthworks contractor’s standard of care safety plan for normal heavy equipment earthworks.
Confirmation base and sidewall testing would be the basis for determining the limits of any Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
34 targeted excavations or newly discovered areas having evidence of contamination (i.e., chemical odors/soil staining).
Sampling results, soil stockpile management, landfill acceptance profiling disposal documentation would be regularly relayed to the SC-HSA throughout the project. Experienced staff would coordinate all environmental monitoring, oversight, and sampling with licensed earthworks contractors who would be tasked with cost-effectively implementing this limited remedial excavation work. Earthworks would be conducted using standard earthworks equipment that include graders, excavators and loaders and standard-of-care earthworks practices will be in place for construction site safety and for controlling the generation of dust contact (i.e., wetting soils, monitoring wind speed, particulate dust monitoring, etc.). • Land Use Covenant: Because some residual contaminants would remain at concentrations exceeding cleanup goals (albeit under conditions that are completely protective of human health and safety), a Land Use Covenant (deed restriction) that runs-with-the-land would be required to document existing conditions and future soil management obligations. A Land Use Covenant condition for this remedial alternative would include a requirement that the planned impervious cap cover be checked on a prescribed schedule and maintained as necessary to provide the protective cover that serves to eliminate potential exposure to any underlying impacted soil. In addition, any utility repair work would be required to follow standard-of-care, notification and soil handling protocols that will be established in a Post-Construction, Site Management Plan (to be included as a recorded exhibit of the Land Use Covenant).
6.2 Remedial Action Alternatives Evaluation
Alternative 2 (Burial Envelope with Soil Cap) has been selected as the most reasonable and appropriate remedial option because:
is protective of human health;
is effective over both the short and the long term;
is cost effective because it incorporates remedial action with redevelopment grading; is implementable; and
is the most cost effective based on redevelopment plans.
Alternative 1 (No Further Action) is not implementable as it would be unacceptable to the overseeing health agency (SC-HSA), and it would prevent redevelopment. The costs for transport, landfill disposal, and imported replacement fill for implementing Alternative #2 (Site-wide Shallow Soil (2-feet) Excavation and Targeted Deeper Excavation and Disposal) are over double the costs of the recommended “Burial Envelope with Soil Cap” alternative (Alternative 3).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
35 7.0 REMEDIAL DESIGN
This section describes the tasks that would be conducted to complete the selected remedial action alternative (i.e., Alternative 3, Burial Envelope with Soil Cap). The proposed consolidation, on-site burial and capping of the non-hazardous concentrations of metal impacted soils will be completed in general accordance with guidelines provided in DTSC’s Proven Technologies and Remedies Guidance – Remediation of Metals in Soil using the Area of Contamination approach (AOC)9 . The goal of the
proposed capping remedy will be to provide an easy to maintain, health and environmentally protective long-term solution for the Site by completely removing the well-defined Site COCs that exceed residential screening thresholds from direct contact with future on-site receptors (ESLs/DTSC-SLs).
This capping remedy will require an environmental deed restriction and the preparation of a PostConstruction Environmental Site Management Plan that will provide clear direction for managing impacted soil beneath the cap during the construction phase of Site development, and for any future subsurface utility work that penetrates or alters the cap. Note: DTSC AOC guidelines do not preclude the installation of utility infrastructure beneath or within the capped footprint of the residual, lowconcentration contaminants. Additional protections can be put in place (i.e., impervious separation sheeting) but is not required. Protocols established in the Construction Soil Management Plan, (Appendix D) or the Land Use Covenant (i.e., the Post-Construction Environmental Site Management Plan) will be protective of residents and construction workers. Following the emplacement of the soil cap, completion of the proposed development and recording of the environmental deed restriction, we will request that the County of Santa Cruz Environmental Health Services Agency issue a No Further Action letter for the completed remediation. The capping remedy includes the following elements:
1. A study of buried contaminant mobility / leaching with respect to shallow groundwater protection beneath the Site (copy included in Appendix C).
2. Remedial excavation and consolidation of the well-defined soil impacts.
3. Preparation of the impacted soils burial envelope, impacted soil burial and cap emplacement, and construction of site improvements (design specification included in Appendix H and placement location details included in Appendix A and as Figure 6).
4. Environmental land use covenant/deed restriction and environmental site management plan to ensure long-term protection of the cap. A Model Land Use Covenant template (deed restriction) and Financial Assurance details are included in Appendix G to document the framework that will 9 The Area of Contamination approach “is based on an interpretation of federal guidelines which allow for the movement of hazardous wastes within a contiguous area of generally dispersed contamination without being considered land disposal and without triggering land disposal restrictions”. The “placement” of hazardous waste into a land-based unit is not considered land disposal when using the Area of Contamination approach.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
36 be recorded and put in place prior to occupancy. The Land Use Covenant will include as an Exhibit, a standard of care, Post-Construction Environmental Site Management Plan designed to address the long-term stewardship of the capped remediation pit (i.e., the selected cleanup alternative).
5. All proposed Site remediation and monitoring tasks will be completed and documented under the direct supervision of a California Registered Professional Geologist from Weber Hayes and Associates with expertise in environmental assessment and remediation.
In general, the proposed capping remedy will involve placing a total of approximately 18,000-yd3 of metal and TPH impacted soils (classified as non-hazardous) in compacted lifts beneath impervious roadway/parking areas in the northeast corner of the property (approximate 17,100-ft2 area, see Environmental Grading Plan, Figure 5). The soils will be encapsulated in a demarcation fabric/geogrid and capped with a minimum 8-inch thick, compacted base rock encapsulated by a minimum of 4-inches of reinforced concrete. Note: As described in the notes of the Civil Engineering Sheet C5.1 (Remediation Pit Grading Plan), once the final elevation of the remediation pit is reached (i.e., 12-inches below final pavement/concrete elevation, a temporary impermeable plastic liner (30-mil minimum) will be topped with clean backfill material until final cap is installed.
The base of the impacted soils burial envelope is designed to provide a minimum of 15-feet of separation between the impacted soils and historic high shallow groundwater (reported as 11-ft above MSL). Only soils designated as non-hazardous, will be placed within the confines of the surveyed, designated footprint, starting at an elevation of 26-ft above MSL. This elevation is 15-ft above the groundwater high water mark of 11-ft above MSL.
Site preparation tasks involve scraping and separate stockpile segregation of the upper 24-inches (2- feet) of soil from across the property (separately designated stockpile areas shown on the Environmental Grading Plan (Figure 5). Initial surface/shallow soils removal is designed to uncover/ remove accessible, shallow debris accumulated over the years (tires, metal debris), and to more clearly see native soil conditions, especially in areas containing visually-stained soils or debris. A licensed surveyor (Landset Engineers, Inc.) will establish pre-excavation grade and the selected earthworks contractor will use laser/GIS technology to control grading depths.
The work proposed in this Renewed RAP will be conducted with standard-of-care construction practices that will be in place for construction site safety and specifically for controlling the generation of dust contact (i.e., wetting soils, monitoring wind speed, continuous particulate dust monitoring, etc.).
Weber, Hayes, and Associates staff will manage environmental aspects of this project including agency coordination, environmental site safety (including daily tail gate safety meetings), determining the limits Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
37 of the target excavations, collection of base and sidewall samples where necessary for confirmation laboratory testing, soil stockpile management, landfill acceptance profiling and disposal documentation, and summary reporting.
Earthworks: All soil removal, stockpiling, and truck loading work will be conducted using heavy equipment (excavators, backhoes) and the transport of impacted soils to the burial envelope and/or to a Class I/III landfill will use tarped end dumps). There will be no trench work/workers for this grading project and no construction worker entry into the shallow excavations is expected. Site access will be controlled to allow only authorized personnel on-site.
Earthworks will be monitored visually using windsocks, flagging and hand-held wind meters to gauge wind speed, and on-going particulate monitoring to measure and control dust on-site. Soils will be wetted as necessary to prevent visible dust drift and earthworks will be halted if wind gusts exceed 15 mph or if continuously-measured particulate dust in the work area or at the perimeter exceeds regulatory levels documented in the Site Safety & Dust Monitoring Plan (Appendix D). This stand-alone, environmental Site Safety Plan addresses contaminant construction worker & off-site receptor protection for earthworks and sampling activities conducted within impacted areas. Site safety will include continuously recorded dust monitoring in the work area (using applicable dust screening levels that are protective of workers) and along the property line (for applicable dust screening levels that are protective of non‐workers) for particulate and respirable dust and associated Chemicals of Potential Concern. This plan will complement the earthworks contractor’s standard of care safety plan for normal heavy equipment earthworks.
Projected soil removal volumes, earthwork removal and stockpiling strategy, landfill acceptance testing, and confirmation sampling protocols are described in the alternates section of this report. Site soils will be removed using standard earthmoving equipment and elevation control/sample locations will confirmed by using a licensed surveyor (Landset Engineers, Inc.) to establish pre-excavation grade/sample locations and laser/GIS technology to be used by the earthworks contractor to control grading depths. Excavated soil will be segregated and stockpiled on-site for landfill acceptance testing and then loaded on to trucks for hazardous and non-hazardous transport to a local Class I/III landfill (acceptance pending results of stockpile sample testing and landfill acceptance profile approval).
Any stockpiled soils from the target (impacted) locations will be placed on an impermeable surface (i.e., asphalt, plastic sheeting); if excavated material is placed on native soils, at least 2-to-4 inches of underlying soils will be scraped to prevent leaving cross-contaminated soils at the Site. All stockpiles will be tarped with plastic sheeting that is adequately held down to prevent wind disturbance of the cover or infiltration from rains in accordance with the site-specific, Stormwater Pollution Prevention Plan (SWPPP) for the site. It is anticipated that the soil removal earthworks will move 35,200 yd3 of impacted soil for AOC burial/capping (~18,000-yd3
) and for off-site disposal at the Class I/III Landfills (~17,200-yd3).
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
38 Field Oversight and Confirmation Sampling: Environmental oversight will be completed by experienced geologist and engineers from Weber, Hayes and Associates who will manage the environmental aspects of the project, including colleting confirmation samples in the 10 subareas (described in detail in Section
6.1.2 Remedial Action Alternative #2) determining the final limits the excavations. Targeted deeper excavation activities will remove soils from areas identified in Figure 4b and 4c, and soil will be removed at least to the defined depth of the sample location [e.g., sample T-11, 6-foot excavation]. Confirmation sampling frequency/location will be collected in accordance with SC-HSA’s Site Mitigation Program Standards (SC-HSA, 2010). A copy of the required sampling frequency along with sampling protocols is included in Appendix E (Soil Sampling Field Methodology). Additional tasks include managing soil stockpiles of excavated materials, disposal profiling, and correspondence and reporting to the SC-HSA.
As noted above, a site-specific, Site Safety & Dust Monitoring Plan (SSP, Appendix D with the Soil Management Plan) addresses soil handling/management of contaminated soils and health and safety dust monitoring for both the on-site worker and non-worker at the property line. The SSP will be discussed and updated during daily tailgate reviews.
Reporting: A comprehensive Remedial Action Implementation Report will document completion of all remedial excavation, testing, and disposal work tasks proposed in this Renewed RAP. The report will include tabulated results of all excavation confirmation samples, figures of final excavation limits, laboratory testing and landfill disposal documentation, and recommendation for any additional work tasks, if any.
8.0 IMPLEMENTATION SCHEDULE
Initial grading and Site preparation tasks for the Hillcrest Subdivision Development project is planned to begin in the spring of 2022. The earthworks contractor is ready to mobilize upon agency approval of this Renewed RAP. Remedial earthworks (digging, stockpiling, loading, & trucking) will be completed on a parallel track with other Site redevelopment and construction tasks. As described above, impacted soils will be profiled for Class III non-hazardous landfill disposal. SC-HSA will be provided with regular updates, both verbal and written, during the course of remedial earthworks. Following milestone soil removal events, we will also provide updated field documentation that will include a description of any new field indications of previously unidentified soil contamination or areas containing buried areas, location figures, and opinions regarding the need for any additional remedial effort.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
39 Implementation tasks and schedule, upon agency approval of this Renewed RAP, will be as follows:
Task 1: Structure Demolition and Vehicle off-haul: Completed Task 2: Removal of Any Residual Near-Surface Debris: Completed Task 3: Shallow and Deep Soil Remediation: April 2022
Task 4: Final Documentation and Reporting: 6-8 weeks following Task 3
9.0 LIMITATIONS
All work related to the hazardous materials investigation and remediation at this Site has been completed under the direct supervision of a Professional Geologist or Engineer, registered in California, and experienced in environmental remediation. Please contact us if you have any questions/input regarding this project, at 831.722-3580.
Sincerely,
Weber, Hayes and Associates, Inc.
By:
_________________
Harrison Hucks
Senior Scientist
And:
____________________
Patrick Hoban, PG
Principal Geologist
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
40 10.0 REFERENCES
ASTM E1527-13, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, 2013.
California Department of Toxic Substances Control (DTSC), Human and Ecological Risk Office, Human Health Risk Assessment:
• (DTSC, 2008), Proven Technologies and Remedies (PT&R) guidance for Remediation of Metals in Soil, August 29. < https://dtsc.ca.gov/wp-content/uploads/sites/31/2016/01/Guidance_RemediationSoils.pdf > • (DTSC, 2020), Human Health Risk Assessment (HHRA), Note Number: 3, DTSC-modified Screening Levels, June <https://dtsc.ca.gov/wp-content/uploads/sites/31/2019/04/HHRA-Note-3-June-2020-A.pdf> California Environmental Protection Agency (CalEPA), Use of California Human Health Screening Levels in Evaluation of Contaminated Properties, January 2005.
California Environmental Protection Agency Office of Environmental Health Hazard Assessment (CalEPA/OEHHA) and the Department of Toxic Substances Control (CalEPA/DTSC) LeadSpread Model California Regional Water Quality Control Board (San Francisco Bay Region) (RWQCB-SFB) • (RWQCB-SFB, 2019), Guideline document: Screening for Environmental Concerns at Sites with Contaminated Soil and Groundwater (Final version, July 2019). < https://www.waterboards.ca.gov/sanfranciscobay/water_issues/programs/esl.html > Central Coast Regional Water Quality Control Board (CC-RWQCB):
• (CC-RWQCB, 2019), Water Quality Control Plan for the Central Coastal Basin, June.
County of Santa Cruz Environmental Health Services Agency (SC-HSA) guidelines:
• (SC-HSA, 2010), Site Mitigation Program Standards, revised August:
< http://scceh.com/Portals/6/Env_Health/hazardous_materials/HM08100.pdf > County of Santa Cruz Environmental Health Services Agency (SC-HSA) correspondence regarding 511 Ohlone Parkway, Watsonville:
• (SC-HSA, 2016), Notice of Intent to Open Remedial Action Case Under Voluntary Cleanup Program, August 9.
• (SC-HSA, 2017): Response to the Site Preparation Tasks for Redevelopment (SPTR) and the Remedial Action Plan (RAP), (County RO# 0000365), dated October 2. • (SC-HSA, 2018a): Email Approval of Pathway & Peninsula Sampling Plan, dated March 15. • (SC-HSA, 2018b): Agency Conditional Approval of the Revised Remedial Action Plan, June 15.
Huntley Environmental (Huntley) comments regarding 511 Ohlone Parkway, Watsonville:
• (Huntley, 2017a): Technical Memorandum: Re: Comments on the Remedial Action Plan (RAP), and the Site Preparation Tasks for Redevelopment (SPTR), dated September 29. • (Huntley, 2017b): Emailed follow-up comments: Additional Comments by SC‐HSA‘s 3rd‐Party Toxicologist: Comments on the Remedial Action Plan (RAP), and the Site Preparation Tasks for Redevelopment (SPTR), dated December 5.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
41 Lowney Associates, report on the 511 Ohlone Parkway property (formerly 600 Errington Road):
• (Lowney, 2004), Soil Quality Evaluation, Cluster Property, dated September.
Miller Pacific Engineering (MPE) Group;
• (MPE, 2021) Retaining Wall, Stability & Settlement Calculations, Hillcrest Residential Subdivision (copy in Appendix H), June 4.
• (MPE, 2022) Geotechnical Evaluation, Hillcrest Residential Subdivision (abridged copy in Appendix H), January 20.
Ramsey Civil Engineering (Ramsey):
• (Ramsey, 2022) Drawing, C5.1 (copy in Appendix A): Remediation Pit Grading Plan (Soil Mitigation & Rough Grading Sequence); January 2022.
Rincon Consultants, Inc. (Rincon)
• (Rincon, 2018), Sunshine Vista Phased Development Project, Final Environmental Impact Report, May < https://cityofwatsonville.org/DocumentCenter/View/8520/Sunshine-Vista-Final-EIR > • Rincon, 2018), Sunshine Vista Phased Development Project, Addendum to the Environmental Impact Report, February.
- https://cityofwatsonville.org/DocumentCenter/View/10547/Sunshine-Vista-EIR-Addendum2019 Thomas Harder & Company (TH&Co) reports regarding 511 Ohlone Parkway, Watsonville:
• (TH&Co, 2017): Response to September 29, 2017, Huntley Environmental Comments 2 through 12, dated October 26.
• (TH&Co, 2018): Response to Huntley Review of TH&Co’s Response to Comments, April 19. • (TH&Co, 2021): Transport Modeling Report (assessment of the potential for leaching), May 20.
Trinity Source Group, report on the 511 Ohlone Parkway property:
• (Trinity 2016), Additional Phase II Environmental Site Assessment Report, December.
Weber, Hayes & Associates (WHA) reports on the 511 Ohlone Parkway property (formerly 600 Errington Road):
• (WHA, 2004), Phase I/II Environmental Site Assessment, 600 Errington Road, February. • (WHA, 2016), Phase I/II Environmental Site Assessment, 511 Ohlone Parkway, July. • (WHA, 2017a), Site Preparation Tasks for Redevelopment (SPTR), dated July 13 (submitted September 17, 2017).
• (WHA, 2017b): Remedial Action Plan (RAP) September 13. • (WHA, 2021): Updated Remedial Action Plan (Revised RAP), January 12. - https://cityofwatsonville.org/DocumentCenter/View/16480/5-Updated-Remedial-ActionPlan-2021.
Exhibit B
Renewed Remedial Action Plan (2022)
511 Ohlone Parkway, Watsonville
February 2022
42 United States Environmental Protection Agency (US-EPA):
• (US-EPA, 2015), (Ashtok, A.S. and A.K. Singh). ProUCL Version 5.1.002 (Technical Guide, Statistical Software for Environmental Applications for Data Sets with and Without Nondetect Observations); EPA/600/R-07/041. October.
• (US-EPA, 2021), Regional Screening Levels for Residential Uses (TR=1-6, HQ=1), November - https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables Exhibit B
Renewed Remedial Action Plan
511 Ohlone Parkway, Watsonville
Weber, Hayes and Associates
FIGURES
Figure 1:
Figure 2:
Figure 3:
Figure 4a:
Figure 4b:
Figure 4c:
Figure 5:
Figure 6:
Location Map
Vicinity Map
Site Map with Shallow Soil Sample Location Grid (for Table 1 reference) Shallow Soil Contaminant Exceedances (Less than 2 Feet) Deeper Soil Contaminant Exceedances (2 Feet and Below)
Locations Requiring Additional Confirmation Sampling
Site Environmental Grading Plan
Soil Mitigation Pit Plan
Figure 7: Stockpile Plan & Confirmation Testing Grid
Exhibit B
Weber, Hayes & Associates
Hydrogeology and Environmental Engineering
120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Location Map
- Renewed Remedial Action Plan (2022)
(Mitigation of Shallow, Impacted Soils) Figure
1 Project
2t159
Site: Former Clusters Storage Yard
Address: 511 Ohlone Parkway, Watsonville
Date: February 2022 Revisions/Notes:
Subject
Site
0' 2,000'
APPROXIMATE SCALE
Base Map from USGS TopoView
http://ngmdb.usgs.gov
Exhibit B
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Vicinity Map
- Renewed Remedial Action Plan (2022) Figure
2 Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes: SUBJECT SITE
OHLONE PARKWAY
Residential
Residential
Residential
Industrial
Residential
0' 100-ft APPROXIMATE SCALE BASE MAP FROM GOOGLE EARTH
Exhibit B
Property Line
A
B
C
D
E
1 2 3 4 5 6 7
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Soil Sample Locations (Information Key on Table 1)
- Renewed Remedial Action Plan (2022) Figure 3
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Location of Planned Soil Mitigation Pit
(see Appendix A for details)
Limits of Grading Work
(CDFW / RWQCB Setback Line)
B-1(t)
T-17(t) B-3(t)
B-4(t)
B-5(t)
B-6(t)
B-2(t)
B-7(t)
B-8(t) B-9(t)
T-1(t)
T-2(t)
T-7(t)
T-10(t)
T-13(t)
T-12(t)
T-11(t) T-14(t) T15(t)
T-6(t)
T-9(t)
T-5(t)
T-4(t)
T-3(t)
T-8(t)
T-18(t)
T16(t)
B-10(w)
B-12(w)
B-14(w)
B-13(w)
B-16(w) B-15(w)
B-19(w)
B-20(w)
B-23(w)
B-24(w)
B-22(w)
B-21(w)
B-18(w)
B-17(w)
B-27(w)
B-26(w)
B-29(w) B-28(w)
B-30(w)
B-31(w) B-32(w)
B-25(w)
B-11(w)
B-52(L) SS-5(L)
SS-3(L) SS-4(L)
SS-1(L)
SS-2(L)
B-53(L)
B-54(L)
B-56(L) B-55(L)
B-58(L)
B-57(L)
B-49(L)
B-50(L)
B-51(L)
B-43(L)
B-44(L)
B-45(L)
B-46(L)
B-47(L)
B-48(L)
B-37(L)
B-36(L)
B-38(L)
B-39(L)
B-35(L)
B-34(L)
B-33(L)
B-41(L)
B-42(L)
B-40(L)
B-59(L)
B-60(L)
B-61(L)
B-62(L)
B-63(L)
B-64(L)
B-83(w)
B-66a(w)
B-69a(w)
B-67a(w)
B-65a(w)
B-74(w)
B-77a(w)
B-88(w)
B-72(w)
B-89(w)
B-78(w)
B-80a(w)
B-82a(w)
B-75(w)
B-76(w)
B-79(w)
B-85a(w)
B-70(w)
B-81a(w)
B-73a(w)
B-68a(w)
B-86(w)
B-87(w)
B-65b(w)
B-65c(w)
B-66b(w)
B-66c(w)
B-67b(w)
B-67c(w)
B-68b(w)
B-68c(w)
B-69b(w)
B-69c(w)
B-73b(w)
B-73c(w)
B-77b(w)
B-77c(w)
B-80b(w)
B-80c(w)
B-81b(w)
B-81c(w)
B-82b(w)
B-82c(w)
B-85b(w)
B-85c(w)
B-71(w)
B-84(w)
0' 85'
APPROXIMATE SCALE BASE MAP FROM
GOOGLE EARTH
Exhibit B
Shallow Contaminant Exceedances (less than 2 feet)
- Renewed Remedial Action Plan (2022) Figure 4a
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDRW / RWQCB Setback Line)
Location of Planned Soil Mitigation Pit
(see Appendix A for details)
0' 85' APPROXIMATE SCALE BASE MAP FROM GOOGLE EARTH
Base Map from
Ramsey Engineering
Explanation
(All Soil Concentrations in mg/kg) Diesel/Motor Oil =
Napthalene =
Total Lead =
Arsenic =
230/5,200.
0.33 80.
13.97 (Background)
Residential
Sample Exceedances Screening Level
Sample locations shown are a close approximate;
Any (deeper over-excavations to be staked in field. T-12(t) B-9(t) B-8(t)
B-3(t)
T-18(t)
B-11(w)
B-12(w)
B-81b(w)
B-73b(w)
B-68a(w)
B-68b(w)
B-68c(w)
B-77a(w)
SS-3(L)
B-65b(w)
Exhibit B
Deeper Contaminant Exceedances (2 feet and below)
- Renewed Remedial Action Plan (2022) Figure 4b
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDRW / RWQCB Setback Line)
Location of Planned Soil Mitigation Pit
(see Appendix A for details)
0' 85' APPROXIMATE SCALE BASE MAP FROM GOOGLE EARTH
Base Map from
Ramsey Engineering
Explanation
(All Soil Concentrations in mg/kg) Diesel/Motor Oil =
Napthalene =
Total Lead =
Arsenic =
230/5,200.
0.33 80.
13.97 (Background)
Residential
Sample Exceedances Screening Level
Sample locations shown are a close approximate;
Any deeper over-excavations to be staked in field. T-12(t) T-11(t)
T-16(t)
B-87(w)
B-52(L)
T-15(t)
B-24(w)
B-65b(w)
B-68a(w)
B-68b(w)
B-68c(w)
B-77a(w)
Exhibit B
Locations Requiring Additional Confirmation Sampling
(Exceedance Locations Without A Deeper Clean Sample) - Renewed Remedial Action Plan (2022) Figure 4c Project
2t159 Site: Former Clusters Storage Yard Address: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDRW / RWQCB Setback Line)
Location of Planned
Soil Mitigation Pit
(see Appendix A for details)
0' 85'
APPROXIMATE SCALE BASE MAP FROM
GOOGLE EARTH
Base Map from
Ramsey Engineering
Explanation
(All Soil Concentrations in mg/kg)
Diesel/Motor Oil =
Napthalene =
Total Lead =
Arsenic =
230/5,200.
0.33 80.
13.97 (Background)
Residential
Sample Exceedances Screening Level
Sample locations shown are a close approximate;
Any deeper over-excavations to be staked in field.
Surface/Shallow Sample (< 2-ft ) having a
threshold exceedance but no deeper confirmation sample (confirmation sample required at this location).
B-68a(w)
@2-ft
B-3(t)
@1.5ft
B-8(t)
@0.5-ft
B-9(t)
B-73b(w)
@0.5-ft
@ 0.5 ft
(w/ Motor Oil)
Cobalt
T-12(t)
@2-ft
T-11(t)
@6-ft
B-68b(w)
@2-ft
B-77a(w)
@2-ft
B-65b(w)
@2-ft
T-18(t)
@ Surface
w/Cobalt
B-81b(w)
@ 0.5 ft
B-24(w)
@2-ft
B-73c(w)
@0.5-ft
Exhibit B
Site Environmental Grading Plan
- Renewed Remedial Action Plan (2022) Figure 5
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDFW/ RWQCB Setback Line)
Location of Planned Soil Mitigation Pit
(see Appendix A for details)
Site Environmental Grading Plan
(See Appendix A for details)
Base Map from
Ramsey Engineering
Exhibit B
Soil Mitigation Pit Plan
- Renewed Remedial Action Plan (2022) Figure 6
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDRW / RWQCB Setback Line)
Location of Planned
Soil Mitigation Pit
Remediation Pit Grading Plan
(See Appendix A for details) Base Map from
Ramsey Engineering
Exhibit B
Confirmation Area
#10
43,140-ft2(+/- 1-acre)
Confirmation Area
#9
43,700-ft2(+/- 1-acre)
Confirmation Area
#8
40,750-ft2(+/- 0.91-acre)
Confirmation Area
#7
49,840-ft2(+/- 1.1-acre)
Confirmation Area
#2
38,070-ft2(+/- 0.9-acre)
Confirmation Area
#3
47,600-ft2(+/- 1.1-acre)
Confirmation Area
#4
47,600-ft2(+/- 1.1-acre)
Confirmation Area
#5
47,600-ft2 Confirmation Area (+/- 1.1-acre)
#6
34,195-ft2(+/- 0.8-acre)
Confirmation Area
#1
85,960-ft2(+/- 2-acres)
Stockpile Plan & Confirmation Sampling Quadrants
- Renewed Remedial Action Plan (2022) Figure 7
Project
2t159
Site: Former Clusters Storage YardAddress: 511 Ohlone Parkway, Watsonville Date: February 2022 Revisions/Notes:
Weber, Hayes & Associates Hydrogeology and Environmental Engineering 120 Westgate Drive, Watsonville, CA
831.722.3580 www.weber-hayes.com
Limits of Grading Work
(CDFW / RWQCB Setback Line)
Location of Planned Soil Mitigation Pit
(see Appendix A for details)
Base Map
(Site Environmental Grading Plan)
from Ramsey Engineering
(See Appendix A for details)
Exhibit B
Renewed Remedial Action Plan
511 Ohlone Parkway, Watsonville
Weber, Hayes and Associates
TABLES
Table 1:
Table 2:
Table 3:
Table 4:
Master Table of All Previously Collected Soil Samples
Summary Table of Metal Analysis Results
Summary Table of Total Lead Analysis Results
Summary Table of Volatile Organic Compounds and Fuel Fingerprint Exhibit B
Quadrant
Location
(see Figure 2)
D2 B‐1(t) 0.5
D2 B‐2(t) 0.5
0.5 1.5
2.5 4
D 1‐2 B‐4(t) 0.5
C‐D 1‐2 B‐5(t) 0.5
D2 B‐6(t) 0.75
D3 B‐7(t) 0.5
0.5 1.5
2.5 4
0.5 1.5
2.5 4
E5 T‐1(t) T4 4
D6 T‐2(t) T6 3.5
C6 T‐3(t) T9 2
B‐C6 T‐4(t) T10 1
B6 T‐5(t) T11 1.5
B6 T‐6(t) T12 1
C5 T‐7(t) T6 1
B‐C6 T‐8(t) T12 2
B5 T‐9(t) T15 2
B‐C4 T‐10(t) Area 3 T1 3
A4 T‐11(t) T1 6
B3 T‐12(t) T3 2
B3 T‐13(t) T5 3
A5 T‐14(t) T10 4
A6 T‐15(t) T1 2
A6 T‐16(t) T1* 8
D2 T‐17(t) T1 2
D1‐2 T‐18(t) Debris ‐‐
0.5 2
0.5 2
0.5 2
0.5 Explorator
2 y Boring
(Hand Auger)
June 2016
(Sampled by Weber
Hayes and Associates
"w")
D3 SB‐4
B‐11(w)
B‐12(w)
B‐13(w)
D‐E3
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Area 1
TB‐9
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
B‐3(t)
Soil Sample Information
Trench
October 2016
(sampled by Trinity Source Group "t")
TB ‐1
TB‐2
TB‐3
TB‐4
B‐9 (t)
Exploratory Boring
B‐8(t)
TB‐5
TB‐6
TB‐7
TB‐8
Area 2
Sample
Date
Sampling
Method
UPDATED
Sample ID
B‐10(w)
ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
D1
D3
D3
D2
Area 5
Area 6
Area 8
SB‐1
SB‐2
SB‐3
D2
Quadrant
Location
(see Figure 2)
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
Soil Sample Information
Sample
Date
Sampling
Method
UPDATED
Sample ID ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
B4 B‐25(w) 2
D3 B‐26(w) 2
D1 B‐27(w) 2
D3 B‐28(w) 2
D3 B‐29(w) 2
D4 B‐30(w) 2
D4 B‐31(w) 2
D6 B‐32(w) 2
1 3
2 3
2 3
B5 B‐36(L) 4
1 3
1 3
5 7
B7 B‐39(L) 5
0.5 2
June 2016 (continued)
(Sampled by Weber Hayes and Associates "w")
August 2004
(Sampled by Lowney Associates "L")
CL‐3
CL‐4
CL‐5
CL‐8
DP‐8
DP‐9
CL‐1
CL‐2
B‐33(L)
B‐34(L)
B‐35(L)
B‐37(L)
B‐38(L)
B‐40(L)
CL‐6
SB‐7
SB‐8
SB‐9
SB‐10
R‐1
B‐18(w)
B‐19(w)
B‐20(w)
B‐21(w)
B‐22(w)
B5
B6
B6
A6
B4
DP‐2
DP‐4
DP‐5
DP‐6
DP‐7
B‐15(w) SB‐6
E4 B‐14(w) SB‐5
Exploratory Boring
B3
B2
D5
D5
C6
A4
A6
C4
D4
D6
C5
B‐16(w)
DP‐1
SB‐11
SB‐12
SB‐13
SB‐14
SB‐15
B‐23(w)
B‐24(w)
B‐17(w)
Quadrant
Location
(see Figure 2)
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
Soil Sample Information
Sample
Date
Sampling
Method
UPDATED
Sample ID ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
0.5 2
3 1
3 2
3 1
3 3
5 7
3 5
7 3
5 7
3 5
7 2
4 1
3 7
11 B4 B‐51(L) 2
2 4
6 2
4 6
0.5 2
0.5 2
3 2
4 2
4 2
3.5 2
3 2
3 Exploratory Boring
August 2004
‐ continued ‐
(Sampled by Lowney Associates "L" )
B‐46(L)
B‐44(L)
G+G‐4
G+G‐5
G+G‐6
G+G‐7
G‐1
CZ‐2
CZ‐3
B‐41(L)
B‐42(L)
B‐43(L)
B‐48(L)
B‐49(L)
B‐47(L)
G‐2
BC‐3
BC‐4
CZ‐1
B‐56(L)
B‐57(L)
B‐58(L)
B‐59(L)
B‐60(L)
B‐50(L)
B‐52(L)
B‐53(L)
B‐54(L)
B‐55(L)
B‐45(L)
D3
C4
C2
B2
B3
B2
B3
C3
C3
B3
D1
C1
D2
R‐2
R‐3
GZ‐1
GZ‐2
G+G‐1
G+G‐2
G+G‐3
BC‐1
BC‐2
D3
D2
E3
C3
B4
B5
Quadrant
Location
(see Figure 2)
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
Soil Sample Information
Sample
Date
Sampling
Method
UPDATED
Sample ID ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
0.5 2
3 2
3 2
4 6
2 4
6 A4 SS‐1(L) ‐‐
A4 SS‐2(L) ‐‐
A6 SS‐3(L) ‐‐
A6 SS‐4(L) ‐‐
D5 SS‐5(L) ‐‐
0.5 2
C3 B‐65a(w) 2
C‐D3 B‐65b(w) 2
D2‐3 B‐65c(w) 2
0.5 2
D2 B‐66a(w) 2
2 4
D2 B‐66c(w) 2
0.5 2
D3 B‐67a(w) 2
D3 B‐67b(w) 2
D3 B‐67c(w) 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
D3 B‐69a(w) 0.5
E3 B‐69b(w) 0.5
D2 B‐69c(w) 0.5
0.5 2
4 August 2004
‐ continued ‐
(Sampled by Lowney Associates "L" )
Exploratory Boring Exploratory Boring
December 2003
(Sampled by Weber Hayes Associates "w" )
G&G 5c
B‐70(w) G&G
(Discrete #1 D3
B‐68b(w)
B‐68c(w)
G&G 4a
G&G 4b
G&G 4c
B‐69(w) G&G
(composite 5a,5b,5c)
G&G 5a
G&G 5b
D2
D1
D2
G&G 3a
G&G 3b
G&G 3c
B‐68(w) G&G
(composite 4a,4b,4c)
B‐68a(w)
G&G 2a
G&G 2c
B‐66b(w) G&G 2b
B‐67(w) G&G
(composite 3a,3b,3c)
D2
D3
D2
C2
B‐65(w) G&G
(composite 1a,1b,1c)
G&G 1a
G&G 1b
G&G 1c
G&G
(composite 2a,2b,2c) B‐66(w)
SS‐5
D2
SS‐4
G‐3
Surface
Sample
SS‐1
SS‐2
B‐61(L)
B‐62(L)
B‐63(L)
B‐64(L)
SS‐3
G‐4
G‐5
G‐6
C4
C5
D5
D4
D2
Quadrant
Location
(see Figure 2)
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
Soil Sample Information
Sample
Date
Sampling
Method
UPDATED
Sample ID ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
20 40
0.5 2
0.5 2
B2 B‐73a(w) 0.5
B2 B‐73b(w) 0.5
B2 B‐73c(w) 0.5
0.5 2
0.5 2
0.5 2
0.5 2
C3‐4 B‐77a(w) 2
C3 B‐77b(w) 2
C3 B‐77c(w) 2
0.5 2
0.5 2
0.5 2
B4 B‐80a(w) 2
2 4
B4 B‐80c(w) 2
0.5 2
0.5 2
0.5 2
0.5 2
0.5 2
C5 B‐82a(w) 2
C5 B‐82b(w) 2
C5 B‐82c(w) 2
0.5 2
4 20
40 Exploratory Boring
December 2003
‐ continued ‐
(Sampled by Weber Hayes Associates "w" )
B‐80(w) Gerrys
(composite 2a,2b,2c)
Gerrys 2a
Gerrys 2c
B‐80b(w)
Gerrys 4b
B‐81a(w) Gerrys 3a
B‐81b(w) Gerrys 3b
B‐81c(w) Gerrys 3c
B‐82(w) Gerrys
(composite 4a,4b,4c)
Gerrys 4a
C4
C5
D4
C5
D4
D1
Gerrys 4c
B‐83(w) Gerrys Discrete
B‐84(w) EB‐2
B‐71(w) EB‐1
B‐72(w) Gonzalez
(composite 1a, 1b, 1c)
B‐73(w) Gonzalez#
(composite 2a, 2b, 2c)
C5
B‐C2
B2
D5
Gonzalez 2a
Gonzalez 2b
Gonzalez 2c
B‐74(w) Clusters
(composite 1a,1b,1c)
B‐75(w) Clusters
(composite 2a,2b,2c)
B‐76(w) Clusters#
(composite 3a,3b,3c)
B6
A5
Gerrys 2b
B‐81(w) Gerrys
(composite 3a,3b,3c)
B‐77(w) Chaz #‐ 1a,1b,1c
Chaz 1a
Chaz 1b
Chaz 1c
B‐78(w) Chaz
(composite 2a,2b,2c)
B‐79(w) Gerrys
(composite 1a,1b,1c)
C3
B4
D4
B4
B4
C4
Quadrant
Location
(see Figure 2)
ORIGINAL Consultant ID
(from previous reports)
Sample Depth
(feet below
ground surface)
Table 1: MASTER TABLE of ALL PREVIOUSLY COLLECTED SOIL SAMPLES (All soil sample locations shown on Figure 2)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
Soil Sample Information
Sample
Date
Sampling
Method
UPDATED
Sample ID
0.5 2
D4 B‐85a(w) 0.5
D4 B‐85b(w) 0.5
D4 B‐85c(w) 0.5
0.5 2
0.5 2
4 0.5
2 0.5
2 Note:
TOTAL SAMPLE LOCATIONS TOTAL SAMPLES ANALYZED
145 249
SB = Soil Boring (shallow, hand augured)
DP = Driven Probe (GeoProbe rig)
T = Trench Sample (grab soil from backhoe trench)
(w) = Weber‐Hayes Associates:
(L) =
(t) = Trinity Source Group:
Sample depths by Weber‐Hayes and Lowney were measured from the top of the collected soil sample (i.e. a "2‐ft" sample means the top of the soil sample was at 2‐ft).
Therefore a "clean" 2‐ft sample would indicate soils are unimpacted below a depth of 2‐ ft.
Sample depths by Trinity were measured from the base of the collected soil sample (i.e. a "2‐ft" sample means the bottom of the soil sample was at 2‐ft). Therefore a "clean" 2‐ ft sample would indicate soils are unimpacted above a depth of 2‐ft. and ‐
Lowney Associates:
Exploratory Boring
December 2003
‐ continued ‐
(Sampled by Weber Hayes Associates "w"
)
B‐C3
B3
D3‐4 B‐85(w) JV
(composite 1a,1b,1c)
JV 1b
JV 1c
B‐86(w) Residence
(composite 1a,1b,1c)
B‐87(w) Residence #1 (discrete)
JV 1a
C4
Table shows only those collected samples that were analyzed at a State‐certified laboratory.
B‐C4
B‐88(w) Bay City
(composite 1a,1b,1c)
B‐89(w) Bay City
(composite 2a,2b,2c)
LEAD Cadmium Chromium Nickel Zinc
B‐1(t) 0.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.4 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ B‐2(t) 0.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
0.5 12 0.37 13 15 71 ND ‐‐ 1 95 0.12 0.78 6.5 27 1 ND 0.1 0.12 51 0.0441.5 140 2.4 23 26 410 0.89 ‐‐ 1.7 140 0.24 1.1 8.7 85 1.2 ND 0.18 ND 53 0.0732.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.6 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.6 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ B‐4(t) 0.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐B‐5(t) 0.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.1 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐B‐6(t) 0.75 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.8 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐B‐7(t) 0.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.6 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
0.5 23 0.71 9.9 9.9 75 0.75 ‐‐ 0.77 54 0.14 1 6.6 54 2.4 ND ND ND 51 0.0531.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 3.3 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐2.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1.9 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 0.61 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
0.5 40 1.3 29 31 97 0.14 ‐‐ 2.2 93 0.17 1.1 7.4 82 2.6 ND 0.12 ND 46 0.111.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 1 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐2.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 2.7 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 4 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 0.85 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ T‐1(t) T4 4 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.9^ ‐‐ ‐‐ 2.1 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐T‐2(t) T6 3.5 20^ 0.74^ 21^ 18^ 68^ ND ‐‐ 4.4^ 170^ 0.30^ ‐‐‐ 5.9^ 15^ 0.91^ ND ND ND 25^ 0.39T‐3(t) T9 2 29^ 1.4^ 33^ 37^ 150^ ND ‐‐ 9.2^ 110^ 0.32^ ‐‐‐ 9.6^ 69^ 1.5^ ND ND ND 44^ 0.28T‐4(t) T10 1 6.8^ 0.35^ 31^ 23^ 39^ ND ‐‐ 3.3^ 120^ 0.50^ ‐‐‐ 12^ 10^ 0.48^ ND ND ND 43^ 0.047T‐5(t) T11 1.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.5^ ‐‐ ‐‐ 1.6 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐T‐6(t) T12 1 76^ 0.68^ 53^ 57^ 110^ ND ‐‐ 5.6^ 170^ 0.42^ ‐‐‐ 13^ 25^ 0.60^ ND ND ND 49^ 0.14T‐7(t) T6 1 8.6^ 0.38^ 62^ 100^ 76^ ND ‐‐ 5.8^ 210^ 0.50^ ‐‐‐ 16^ 36^ 0.27^ ND ND ND 42^ 0.17T‐8(t) T12 2 22^ 0.95^ 77^ 93^ 110^ ND ‐‐ 5.0^ 140^ 0.30^ ‐‐‐ 13^ 31^ 0.63^ ND ND ND 43^ 0.15T‐9(t) T15 2 55^ 0.53^ 47^ 52 88^ ND ‐‐ 3.5^ 83^ 0.26^ ‐‐‐ 11^ 63^ 0.72^ ND ND ND 52 0.16 T‐10(t) Area 3 T1 3 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 8.6 ‐‐ ‐‐ 3.5 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐T‐11(t) T1 6 3,200^ 9.3^ 100^ 140^ 1,400^ 1.5^ ‐‐ 11^ 2,100^ 0.48^ ‐‐‐ 16^ 86^ 5.5^ ND ND ND 42^ 0.14T‐12(t) T3 2 1,100^ 4.3^ 57^ 84^ 380^ 6.1^ ‐‐ 9.4^ 250^ 0.45^ ‐‐‐ 19^ 100^ 2.8^ ND ND ND 50^ 0.18T‐13(t) T5 3 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ 5.8^ ‐‐ ‐‐ 4.9 ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐T‐14(t) T10 4 16^ 0.44^ 70^ 110^ 69^ ND ‐‐ 7.4^ 260^ 0.64^ ‐‐‐ 18^ 35^ 0.57^ ND ND ND 48^ 0.09T‐15(t) T1 2 130^ 1.2^ 45^ 59^ 160^ 0.62^ ‐‐ 5.4^ 130^ 0.42^ 2.3 12^ 73^ 1.5^ ND ND ND 49^ 0.11T‐16(t) T1* 8 310^ 2.6^ 35^ 74^ 380^ 1.6^ ‐‐ 11^ 120^ 0.22^ ‐‐‐ 8.1^ 160^ 13^ ND ND ND 62^ 0.18T‐17(t) T1 2 50^ 3.0^ 35^ 42^ 360^ 0.56^ ‐‐ 4.5^ 120^ 0.37^ ‐‐‐ 9.7^ 94^ 2.6^ ND 0.77^ ND 59^ 0.099T‐18(t) Debris ‐‐ 120^ 1.6^ 110^ 150^ 150^ ND ‐‐ 14^ 330^ 0.92^ ‐‐‐ 28^ 53^ 0.83^ ND ND ND 61^ 0.17 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 Site Specific, Background Concentrations (3) (naturally‐occurring concentration) B‐3(t) TB‐3
TB‐5TB‐6TB‐7
B‐8(t) TB‐8
RWQCB Environmental Screening Levels (Residential)
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
Area 5
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) TB‐4TB‐9
Area 1
Area 2
Antimony
October 2016
(sampled by Trinity Source Group)
Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Area 6Area 8
Sample Info
B‐9(t)
TB ‐1
TB‐2
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth
0.5 63 1.7 24 22 110 ND 15,000 3.3 65 0.12J ‐‐‐ 12 140 2.3J ND 0.41J ND 54 0.060J 2 13 0.29J 52 98 66 ND 15,000 6.7 170 0.5 ‐‐‐ 13 31 ND ND 0.31J ND 33 0.056J
0.5 110 1.8 28 150 5,500 ND 18,000 2.3 78 0.13J ‐‐‐ 9.7 690 2.6 ND 0.45J ND 58 0.063J 2 9.9 0.092J 62 89 71 ND 17,000 11 120 0.49J ‐‐‐ 14 41 ND ND 0.44J ND 41 0.083J
0.5 250 0.8 39 43 82 ND 17,000 4.1 100 0.19J ‐‐‐ 11 170 1.0J ND 1 ND 61 0.076J 2 17 0.15J 75 83 71 ND 22,000 1 130 0.48J ‐‐‐ 11 35 ND ND 0.21J ND 23 0.21
0.5 52 0.62 51 67 61 ND 18000^ 5.9 180 0.49J ‐‐‐ 12 35 ND 6.2 0.24J ND 43 0.044J 2 14 0.13J 57 80 59 ND 21000^ 6.2 160 0.51 ‐‐‐ 15 34 ND 7.7 0.33J ND 43 ND
0.5 23 0.34J 48 54 71 ND 17,000^ 5.3 110 0.29J ‐‐‐ 8.8 51 1.3J 71.1 ND 48 0.052J 2 6.9 ND 53 64 30 ND 19,000^ 6.1 210 0.47J ‐‐‐ 7.5 22 ND ND 0.23J ND 40 0.047J
0.5 32 0.29J 30 33 77 ND 17,000^ 3.1 100 0.25J ‐‐‐ 9.8 210 0.21J 7.1 0.33J ND 47 0.070J 2 7.5 ND 46 55 26 ND 15,000^ 5.3 200 0.5 ‐‐‐ 11 20 ND ND 0.18J ND 36 0.045J
0.5 13 0.15J 46 43 51 ND 12,000^ 4 76 0.20J ‐‐‐ 7.5 50 0.34J ND 0.22J 0.50J 40 0.077J 2 11 0.085J 53 69 40 ND 16,000^ 6.3 170 0.43J ‐‐‐ 9.6 25 ND ND 0.23J ND 41 0.045J
0.5 17 0.25J 16 18 48 ND 15,000^ 2.2 72 0.14J ‐‐‐ 5.4 39 0.30J ND 0.26J ND 38 0.053J 2 9.5 ND 57 79 58 ND 16,000^ 5.8 130 0.46J ‐‐‐ 10 33 ND ND 0.24J ND 33 0.11J
0.5 38 0.78 19 28 58 ND 22,000^ 2.8 71 0.19J ‐‐‐ 9.4 87 0.36J ND 0.28J ND 58 0.12J 2 8 ND 51 69 35 ND 16,000^ 5.4 170 0.52 ‐‐‐ 13 25 ND ND 0.20J ND 34 0.078J
0.5 15 0.16J 76 86 98^ ND 19,000^ 6.4 180 0.48J ‐‐‐ 13 37 0.067J ND 0.21J ND 36 0.15J 2 8.6 ND 71 91 74^ ND 19,000^ 8 66 0.47J ‐‐‐ 10 35 ND ND 0.16J ND 42 0.15J
0.5 24 0.78 27 31 130^ ND 25,000^ 3.4 78 0.19J ‐‐‐ 11 72 0.41J ND 0.27J ND 66 0.059J 2 12 0.16J 68 93 73^ ND 19,000^ 8.4 190 0.49J ‐‐‐ 14 34 0.088J ND 0.17J ND 51 0.23
0.5 25 0.22J 50 53 88^ ND 17,000^ 4.8 85 0.23J ‐‐‐ 11 59 0.18J ND 0.29J 0.68J 58 0.12J 2 15 0.11J 54 63 60^ ND 15,000^ 4.7 89 0.26J ‐‐‐ 10 59 1.7J ND 0.30J ND 48 0.089J
0.5 17 0.087J 61 88 64^ ND 18,000^ 7.2 180 0.48J ‐‐‐ 14 32 0.14J ND 0.20J ND 47 0.079J 2 8.3 0.34J 81 95 70^ ND 21,000^ 7.8 180 0.5 ‐‐‐ 14 35 ND ND 0.26J ND 46 0.16
0.5 12 0.077J 20 13 63^ ND 14,000^ 6.7 120 0.26J ‐‐‐ 6.7 12 1.0J ND 0.11J 1.3J 45 0.044J 2 13 ND 55 67 43^ ND 16,000^ 6.3 130 0.48J ‐‐‐ 11 23 ND ND 0.13J ND 37 0.069J
0.5 8.1 0.64 ND 0.76 100^ ND 17,000^ 0.60J 3.7 0.052 ‐‐‐ 6.2 18 0.48J ND ND ND 20 0.15J 2 9.6 ND 51 64 49^ ND 15,000^ 6.2 100 0.42J ‐‐‐ 26 21 ND 2.4 0.27J ND 34 0.044J B‐25(w) 2 9.1 0.35J 61 77 40 ND ‐‐ 7.2 260 0.55 ‐‐‐ 17 26 ND ND 0.25J ND 48 NDB‐26(w) 2 9.4 0.083J 65 92 49 ND ‐‐ 6.6 190 0.61 ‐‐‐ 13 31 ND ND 0.21J ND 46 NDB‐27(w) 2 9 0.056J 59 86 48 ND ‐‐ 6.4 220 0.50 ‐‐‐ 13 29 ND ND 0.24J ND 41 NDB‐28(w) 2 5.9 ND 51 70 47 ND ‐‐ 4.1 11 0.35J ‐‐‐ 11 26 ND ND ND ND 29 0.066JB‐29(w) 2 7.5 ND 57 87 40 ND ‐‐ 5.6 210 0.52 ‐‐‐ 15 25 ND ND 0.18J ND 37 0.063JB‐30(w) 2 8.8 0.067J 58 82 37 ND ‐‐ 6.1 210 0.58 ‐‐‐ 16 26 ND ND 0.15J ND 44 NDB‐31(w) 2 23 0.24J 70 100 72 ND ‐‐ 11 160 0.48J ‐‐‐ 16 40 0.14J ND 0.31J ND 42 0.078JB‐32(w) 2 14 0.090J 60 83 52 ND ‐‐ 5.6 160 0.44J ‐‐‐ 12 31 0.55J ND 0.21J ND 41 0.059J 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 Site Specific, Background Concentrations (3) (naturally‐occurring concentration) B‐17(w)B‐14(w) SB‐5
B‐15(w) SB‐6B‐10(w) SB‐1B‐11(w) SB‐2B‐12(w) SB‐3B‐13(w) SB‐4 SB‐8
B‐18(w) SB‐9B‐19(w) SB‐10
DP‐6DP‐7
B‐22(w) SB‐13
DP‐8DP‐9DP‐4
B‐16(w) SB‐7B‐20(w) SB‐11B‐21(w) SB‐12
DP‐5
B‐23(w)
June 2016
(Sampled by Weber Hayes and Associates)
SB‐14
B‐24(w) SB‐15
DP‐1DP‐2
RWQCB Environmental Screening Levels (Residential)
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth 1 9.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 6.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 9.8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 7.7 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 5.7 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 5.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐36(L) 4 7.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 1 9.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 7 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐1 8.6 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 7.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐5 12 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 14 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐39(L) 5 15 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 8.6 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 7.8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 6.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 5.5 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 5.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐1 5.4 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 5.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 9.4 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 5.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐1 44 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 9.8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 13 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐5 9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 33 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 21 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐5 25 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 8.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 11 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐5 9.3 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 17 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 17 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐5 6.5 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 7.6 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 10 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐1 6.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 6.8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐7 7.7 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 11 7.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐51(L) 2 8.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 (3)
Confirmation Lead Testing Investigation
(no other individual metals analyzxed during this mobilization) B‐44(L) GZ‐2B‐45(L) BC‐1B‐46(L) BC‐2B‐50(L)B‐33(L)B‐49(L) BC‐4
CZ‐1
BC‐3
B‐48(L)B‐38(L) CL‐6
CL‐8
B‐40(L) R‐1
CZ‐2CZ‐3
R‐3
B‐43(L)
CL‐1
B‐41(L) R‐2
GZ‐1
B‐34(L) CL‐2
B‐35(L) CL‐3
CL‐4
B‐42(L)
RWQCB Environmental Screening Levels (Residential)
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
Site Specific, Background Concentrations
(naturally‐occurring concentration)
B‐37(L) CL‐5
August 2004
(Sampledby Lowney Associates)
B‐47(L)
Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth 2 8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 10 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐6 77 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 6.8 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 6.5 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐6 3.9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 7 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 6.4 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 24 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 6 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 9.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 5.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 5.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 7.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 5.3 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 8.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
3.5 11 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 42 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 5.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 14 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 14 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 11 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 11 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 13 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 9 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐3 7.4 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 16 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 15 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐6 6.2 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐2 6.1 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐4 24 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐6 10 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ SS‐1(L) ‐‐ 14 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐SS‐2(L) ‐‐ 28 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐SS‐3(L) ‐‐ 110 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐SS‐4(L) ‐‐ 15 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐SS‐5(L) ‐‐ 11 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 (3)
B‐58(L) G+G‐7
B‐59(L)
Confirmation Lead Testing Investigation
(no other individual metals analyzxed during this mobilization) B‐52(L) G+G‐1
B‐53(L)B‐60(L) G‐2
B‐57(L) G+G‐6
August 2004
‐ continued ‐
(Sampled by Lowney Associates)
SS‐1SS‐2
RWQCB Environmental Screening Levels (Residential)
B‐54(L) G+G‐3
B‐55(L) G+G‐4B‐56(L) G+G‐5B‐61(L) G‐3
SS‐3SS‐4
SS‐5
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
B‐62(L) G‐4
B‐63(L) G‐5
B‐64(L) G‐6
Site Specific, Background Concentrations
(naturally‐occurring concentration)
G+G‐2
G‐1
Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth
0.5 49 ND 65 93 99 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 0.076 2 70 ND 83 130 110 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐ B‐65a(w) 2 25 ‐‐ 64 ‐‐ ‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐ B‐65b(w) 2 89 ‐‐ 85 ‐‐ ‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐ B‐65c(w) 2 50 ‐‐ 72 ‐‐ ‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐
0.5 40 ND 50 70 93 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ND 2 43 ND 48 75 65 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐
0.5 28 ND 60 82 94 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 0.065 2 20 ND 71 100 79 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐67a(w) 2 ‐‐‐ ‐‐‐ 74 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐67b(w) 2 ‐‐‐ ‐‐‐ 53 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐67c(w) 2 ‐‐‐ ‐‐‐ 75 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 5,400 ND 19 28 370 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 66 ND 54 77 280 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 100 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 260 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 170 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 150 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 480 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 25 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 32 ND 50 67 75 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 17 ND 53 85 47 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐69a(w) 0.5 37 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐69b(w) 0.5 33 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐69c(w) 0.5 69 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 17 ND 43 67 45 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 14 ND 55 74 45 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 100 ND 58 92 110 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 0.083 2 16 ND 61 88 50 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐73a(w) 0.5 33 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐73b(w) 0.5 120 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐73c(w) 0.5 85 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 16 ND 63 100 54 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 20 ND 59 79 64 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 16 ND 61 120 58 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 17 ND 61 110 64 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 41 ND 50 72 62 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 31 ND 46 71 61 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 34 ND 44 55 69 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 100 1.2 53 77 160 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐77a(w) 2 280 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐77b(w) 2 36 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐77c(w) 2 19 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 (3)
Clusters# ‐ 2a,2b,2c
B‐76(w) Clusters# ‐ 3a,3b,3c
Site Specific, Background Concentrations
(naturally‐occurring concentration)
Gonzalez# ‐ 2a, 2b, 2c
G&G 5a
G&G 5b
G&G 5c
G&G 1b
G&G 1c
B‐66(w)
Gonzalez# ‐ 1a, 1b, 1c
B‐67(w) G&G# ‐ 3a,3b,3c
G&G 3a
B‐65(w) G&G# ‐ 1a,1b,1c
G&G 1a
B‐68c(w) G&G 4c
B‐73(w)
RWQCB Environmental Screening Levels (Residential)
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
B‐72(w)
G&G 3b
G&G 3c
B‐68(w) G&G# ‐ 4a,4b,4c
B‐68a(w) G&G 4a
B‐77(w) Chaz #‐ 1a,1b,1c
Chaz 1a
Chaz 1b
Chaz 1c
Gonzalez 2c
B‐74(w) Clusters# ‐ 1a,1b,1cB‐75(w)B‐69(w) G&G# ‐ 5a,5b,5c Gonzalez 2a
Gonzalez 2b
December 2003
(Sampled by Weber Hayes and Associates) B‐68b(w)
G&G# ‐ 2a,2b,2c
G&G 4b
Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth
0.5 26 ND 54 84 71 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 38 ND 57 83 69 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 29 ND 43 66 81 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 0.068 2 28 ND 46 74 53 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 17 ND 51 100 61 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 0.087 2 21 ND 56 83 67 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 130 ND 43 75 130 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 19 ND 71 110 67 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 46 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 ‐‐‐ ‐‐‐ 79 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 110 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 ‐‐‐ ‐‐‐ 72 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 15 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 ‐‐‐ ‐‐‐ 71 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 47 ND 50 87 86 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 20 ND 78 120 78 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐82a(w) 2 ‐‐‐ ‐‐‐ 97 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐82b(w) 2 ‐‐‐ ‐‐‐ 77 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐82c(w) 2 ‐‐‐ ‐‐‐ 77 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 60 ND 49 91 320 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 22 ND 49 77 58 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐85a(w) 0.5 48 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐85b(w) 0.5 16 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ B‐85c(w) 0.5 17 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 15 ND 45 68 42 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 18 ND 53 78 51 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 28 ND 53 63 110 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 18 ND 56 65 50 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐
0.5 44 ND 46 56 120 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 2 48 ND 50 98 120 ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ ‐‐‐ 80 78 120,000 86 (3,4) 23,000 11 NE 0.067 (3) 15,000 16 0.3 (3) 23 3,100 390 390 390 0.78 390 13 400 / 80 71 / 71 120, 000 /‐‐ ‐‐ / ‐‐ 23,000 / ‐‐ 31 / ‐‐ 77,000 / ‐‐ 0.68 / 0.11 15,000 / ‐‐ 160 / 16 0.3 / ‐‐ 23 / ‐‐ 3,100 / ‐‐ 390 / ‐‐ 390 / ‐‐ 390 / 390 0.78 / ‐‐ 390 / 390 11 / 1.0 168.1 (3) 13.97 (3) 6.1 (3)
B‐82(w) Gerrys # ‐ 4a,4b,4c
Gerrys 4a
Site Specific, Background Concentrations
(naturally‐occurring concentration)
Gerrys 4b
RWQCB Environmental Screening Levels (Residential)
B‐88(w) Bay City # ‐ 1a,1b,1cB‐89(w)
JV 1a
December 2003
‐ continued ‐
(Sampled by Weber Hayes and Associates) B‐81b(w) Gerrys 3b Gerrys 4c B‐85(w) JV # ‐ 1a,1b,1c B‐81c(w) B‐81(w) Gerrys # ‐ 3a,3b,3c
B‐81a(w)
JV 1b
JV 1c
B‐86(w) Residence #‐ 1a,1b,1cB‐79(w) Gerrys #‐ 1a,1b,1c Gerrys 3c
Gerrys 3a
B‐80(w) Gerrys #‐ 2a,2b,2cB‐78(w) Chaz # ‐ 2a,2b,2c
Bay City # ‐ 2a,2b,2c
US EPA RLs / DTSC‐Modified SLs (2) (Residential)
Exhibit B
LEAD Cadmium Chromium Nickel Zinc
CAM 17 Metals Analysis Results (plus Mercury)
Table 2
Soil Sample Test Results: CAM 17 METALS Analysis
Former Clusters Junkyard, 511 Ohlone Parkway, Watsonville All soil results are in milligrams per Kilogram (mg/Kg) Antimony Aluminum Arsenic Barium Beryllium Silver Thallium Vanadium Mercury Hexavalent Chromium Cobalt Copper Molybdenum Selenium Sample Info
LUFT 5 Metals
Date Sampled UPDATED Sample ID ORIGINAL Consultant ID Depth 1 =
2=
3 =4 =
BOLD = BOLD = GREEN box highlight Indicates the deepest soil sample contains an exceedence (note: a confirmation sample will be .required at this location) BOLD =
ND = Analyte not detected above the laboratory Method Detection Limit (MDL).
UPDATED
Sample ID
Date
sampled
TTLC
(mg/kg)
STLC
(mg/L)
TCLP
(mg/L)
TTLC
(mg/kg)
STLC
(mg/L)
TCLP
(mg/L)
‐ = Sample was not analyzed for this constituent
T‐6(t) 10/13/16 67 3.4 ‐‐ ‐‐ ‐‐ ‐‐ J = Laboratory reports that the detection value is between MDL and PQL, and should be considered to be an estimate.T‐7(t) 10/12/16 ‐‐ ‐‐ ‐‐ 54 0.047 ‐‐ ^ = Detection and Quantitation Limits were raised due to sample dilutionT‐8(t) 10/12/16 ‐‐ ‐‐ ‐‐ 70 0.13 ‐‐ * = Screening Limit for Chromium III is used, as there is no established screening limit for Total Chromium. Chromium IV screening level is 0.3 mg/kg.T‐9(t) 10/12/16 52 2.2 ‐‐ ‐‐ ‐‐ ‐‐ (w) = Weber‐Hayes Associates:
T‐11(t) 10/13/16 2,700 ‐‐ 2.4 89 0.22 ‐‐ (L) =T‐12(t) 10/13/16 780 8.2 0.096 ‐‐ ‐‐ ‐‐ T‐14(t) 10/13/16 ‐‐ ‐‐ ‐‐ 58 0.14 ‐‐ (t) = Trinity Source Group:
T‐15(t) 10/13/16 110 16 0.037 ‐‐ ‐‐ ‐‐T‐16(t) 10/13/16 280 11 0.52 ‐‐ ‐‐ ‐‐ T‐17(t) 10/11/16 ‐‐ ‐‐ ‐‐ 79 0.3 ‐‐
T‐18(t) 10/11/16 110 5.5 0.2 ‐‐ ‐‐ ‐‐
B‐3(t) 10/13/16 140 31 0.71 ‐‐ ‐‐ ‐‐
Federal/State Haz‐Waste Threshold Limit (Title 22) = 1,000 5 5 1,000 5 5 Environmental Screening Levels (ESLs): From the Regional Water Quality Control Board (San Francisco Bay Region) guideline document: Screening for Environmental Concerns at Sites With Contaminated Soil and Groundwater (Final version, 2019). The ESLs are agency‐stablished threshold concentrations intended to provide quantitative risk‐based guidance on whether further assessment or remediation of contamination is warranted based on risk pathways (protection of human heath, groundwater and/or ecological.The Nickel ESL threshold shown is based on worker health and safety risk parameters ‐‐ the risk theshold for residential land use is 840 mg/kg, and the site‐specific, naturally occuring (background) concentration is 168 mg/kg. See Appendix C for details of the background analysis for Nickel.
Notes
ORIGINAL
Consultant ID
Area 6‐T1*Area 1‐T12
Area 2‐T6
Area 2‐T12
Area 2‐T15
Area 5‐T1
Area 5‐T10
Area 5‐T3
Area 6‐T1
BLUE box highlight indicates a hazardous waste threhold exceedance was detected at this sample location (i.e. greater than the Total (TTLC) or Soluble (TCLP,STLC) threshold concentration (details provided in table below):
YELLOW box highlight indicates detected metal concentration exceeds the most conservative threshold concentration for Residential land use (i.e., lowest ESL, RSL, or California‐modified theshold). The only exceptions are for site‐specific (background) concentrations calculated for Arsenic, Hex‐Chromium, and Nickel.
Arsenic, Hexavalent Chromium, and Nickel concentrations were statistically evaluated to determine the site specific, naturally occuring (background) concentrations. See Appendix C for details of this evaluation.CA DTSC Modified Soil Screening Levels (DTSC‐SLs): These are human health, risk‐based values established by the California Department of Toxic Substances Control (DTSC), Office of Human and Ecological Risk (HERO), Human Health Risk Assessment (HHRA) Note Number 3, Table 1 , June 2020. <https://dtsc.ca.gov/wp‐ content/uploads/sites/31/2019/04/HHRA‐Note‐3‐June‐2020‐A.pdf >. Note that for those chemicals not posted on the Note 3 website, DTSC‐HERO endorses the soil thesholds established on the USEPAs Regional Screening Levels (USEPA‐RSLs) website: (https://www.epa.gov/risk/regional‐screening‐levels‐rsls‐generic‐tables, updated November 2020). Both thresholds are listed for transparancy, but generally speaking, California uses a more conservative toxicity evaluation for a select number of urban chemicals. This assessment uses the lowest (most conservative theshold as a cleanup goal).
LEAD
Lowney Associates:
Sample depths by Weber‐Hayes and Lowney were measured from the top of the collected soil sample (i.e. a "2‐ft" sample means the top of the soil sample was at 2‐ft). Therefore a "clean" 2‐ft sample would indicate soils are unimpacted below a depth of 2‐ft.Sample depths by Trinity were measured from the base of the collected soil sample (i.e. a "2‐ft" sample means the bottom of the soil sample was at 2‐ft). Therefore a "clean" 2‐ft sample would indicate soils are unimpacted above a depth of 2‐ft.
Chromium
Area 8‐T1
Area 8‐Debris**
TB‐3
Exhibit B
UPDATED
Sample ID
Depth UPDATED
Sample ID Depth
0.5 12 0.5 32
1.5 140 2 7.5
2.5 -- 0.5 13
4 -- 2 11
B-4(t) 0.5 -- 0.5 17
B-5(t) 0.5 -- 2 9.5
B-6(t) 0.75 -- 0.5 38
B-7(t) 0.5 -- 2 8
0.5 23 0.5 15
1.5 -- 2 8.6
2.5 -- 0.5 24
4 -- 2 12
0.5 40 0.5 25
1.5 -- 2 15
2.5 -- 0.5 17
4 -- 2 8.3
T-1(t) T4 4 -- 0.5 12
T-2(t) T6 3.5 20^ 2 13
T-3(t) T9 2 29^ 0.5 8.1
T-4(t) T10 1 6.8^ 2 9.6
T-5(t) T11 1.5 -- B-25(w) 2 9.1
T-6(t) T12 1 76^ B-26(w) 2 9.4
T-7(t) T6 1 8.6^ B-27(w) 2 9
T-8(t) T12 2 22^ B-28(w) 2 5.9
T-9(t) T15 2 55^ B-29(w) 2 7.5
T-10(t) Area 3 T1 3 -- B-30(w) 2 8.8
T-11(t) T1 6 3,200^ B-31(w) 2 23
T-12(t) T3 2 1,100^ B-32(w) 2 14
T-13(t) T5 3 -- 1 9.9
T-14(t) T10 4 16^ 3 6.2
T-15(t) T1 2 130^ 2 9.8
T-16(t) T1* 8 310^ 3 7.7
T-17(t) T1 2 50 2 5.7
T-18(t) Debris -- 120 3 5.9
0.5 63 B-36(L) 4 7.1
2 13 1 9.1
0.5 110 3 7
2 9.9 1 8.6
0.5 250 3 7.1
2 17 5 12
0.5 52 7 14
2 14 B-39(L) 5 15
0.5 23 0.5 8.6
2 6.9 2 7.8
80 80
80 80
DP-1
DP-2
DP-4
DP-5
DP-6
DP-7
Environmental Screening Levels (1) (Residential)
US EPA RLs / DTSC-Modified SLs (2) (Residential)
Date
Sampled
TB-4
B-12(w) SB-3
B-9(t) TB-9
Area 1
Area 2
Area 5
Area 6
DP-8
DP-9
B-33(L) CL-1
B-34(L) CL-2
B-15(w) SB-6
Table 3
Total Lead Results (soil sampling analysis)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Sample Info Sample Info
Date
Sampled
ORIGINAL
Consultant ID October 2016 (Sampled by Trinity Source Group) June 2016 (Sampled by Weber Hayes Associates) June 2016 (Sampled by Weber Hayes Associates) August 2004 (Sampled by Lowney Associates) TB-5
TB-6
TB-7
B-8(t) TB-8
ORIGINAL
Consultant ID
B-3(t) TB-3
SB-1
B-11(w) SB-2
B-22(w) SB-13
B-23(w) SB-14
B-24(w) SB-15
B-19(w) SB-10
B-20(w) SB-11
B-21(w) SB-12
B-16(w) SB-7
B-17(w) SB-8
B-18(w) SB-9
R-1
B-35(L)
CL-3
CL-4
B-37(L) CL-5
B-38(L) CL-6
B-13(w) SB-4
B-14(w) SB-5
CL-8
B-40(L)
Area 8
B-10(w)
Environmental Screening Levels (1) (Residential)
US EPA RLs / DTSC-Modified SLs (2) (Residential)
Lab Results
Total Lead
Lab Results
Total Lead
UPDATED
Sample ID
Depth UPDATED
Sample ID Depth
Date
Sampled
Table 3
Total Lead Results (soil sampling analysis)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Sample Info Sample Info
Date
Sampled
ORIGINAL
Consultant ID
ORIGINAL
Consultant ID
Lab Results
Total Lead
Lab Results
Total Lead
0.5 6.9 2 8.2
2 5.5 3.5 11
3 5.2 2 42
1 5.4 3 5.2
3 5.9 2 14
2 9.4 3 14
3 5.1 0.5 11
1 44 2 11
3 9.8 3 13
3 13 2 9
5 9 3 7.4
7 33 2 16
3 21 4 15
5 25 6 6.2
7 8.9 2 6.1
3 11 4 24
5 9.3 6 10
7 17 SS-1(L) -- 14
3 17 SS-2(L) -- 28
5 6.5 SS-3(L) -- 110
7 7.6 SS-4(L) -- 15
2 1 SS-5(L) -- 11
4 10 -- 49
1 6.9 2 70
3 6.8 B-65a(w) 2 25
7 7.7 B-65b(w) 2 89
11 7.9 B-65c(w) 2 50
B-51(L) 2 8.2 0.5 40
2 8 2 43
4 10 0.5 28
6 77 2 20
2 6.8 B-67a(w) 2 ---
4 6.5 B-67b(w) 2 ---
6 3.9 B-67c(w) 2 ---
0.5 7 0.5 5400
2 6.4 2 66
0.5 24 0.5 100
2 6 2 260
3 9.1 0.5 170
2 5.1 2 150
4 5.1 0.5 480
2 7.2 2 25
4 5.3
80 80
80 80
B-61(L) G-3
B-60(L) G-2
B-58(L) G+G-7
SS-1
SS-2
SS-3
SS-4
SS-5
B-65(w) G&G
(#1a,1b,1c)
B-62(L) December 2003 (Sampled by Weber Hayes Associates) August 2004 (Sampled by Lowney Associates) August 2004 (Sampled by Lowney Associates) B-46(L) BC-2
B-47(L) BC-3
B-48(L) BC-4
B-43(L) GZ-1
B-44(L) GZ-2
B-45(L)
B-42(L) R-3
B-41(L) R-2
B-59(L) G-1
G+G-3
B-55(L) G+G-4
B-49(L) CZ-1
B-50(L) CZ-2
CZ-3
B-52(L) G+G-1
BC-1
B-53(L) G+G-2
B-54(L)
G-4
B-63(L) G-5
B-64(L) G-6
G&G 3a
G&G 3b
G&G 3c
B-68(w) G&G
(#4a,4b,4c)
B-68a(w) G&G 4a
G&G 1a
G&G 1b
G&G 1c
B-66(w) G&G
(# 2a,2b,2c)
B-67(w) G&G
(#3a,3b,3c)
B-68b(w) G&G 4b
B-68c(w) G&G 4c
Environmental Screening Levels (1) (Residential) Environmental Screening Levels (1) (Residential) US EPA RLs / DTSC-Modified SLs (2) (Residential) US EPA RLs / DTSC-Modified SLs (2) (Residential) B-56(L) G+G-5
B-57(L) G+G-6
UPDATED
Sample ID
Depth UPDATED
Sample ID Depth
Date
Sampled
Table 3
Total Lead Results (soil sampling analysis)
Former Clusters Junkyard
511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Sample Info Sample Info
Date
Sampled
ORIGINAL
Consultant ID
ORIGINAL
Consultant ID
Lab Results
Total Lead
Lab Results
Total Lead
0.5 32
2 17
B-69a(w) 0.5 37 1 =
B-69b(w) 0.5 33
B-69c(w) 0.5 69
0.5 17
2 14
0.5 100
2 16
B-73a(w) 0.5 33
B-73b(w) 0.5 120
B-73c(w) 0.5 85
0.5 16 2=
2 20
0.5 16
2 17
0.5 41
2 31
0.5 34
2 100
B-77a(w) 2 280
B-77b(w) 2 36
B-77c(w) 2 19
0.5 26
2 38
0.5 29 - = Sample was not analyzed for this constituent 2 28 ^ = Detection and Quantitation Limits are raised due to sample dilution
0.5 17 BOLD =
2 21
0.5 130 BOLD =
2 19
0.5 46
2 ---
(w) =
(L) =
0.5 110
2 ---
0.5 15
(t) =
2 ---
0.5 47
2 20
B-82a(w) 2 ---
B-82b(w) 2 ---
B-82c(w) 2 ---
0.5 60
2 22
B-85a(w) 0.5 48
B-85b(w) 0.5 16
B-85c(w) 0.5 17
0.5 15
2 18
0.5 28
2 18
0.5 44
2 48
80 80
Trinity Source Group: Sample depths by Trinity were measured from the base of the collected soil sample (i.e. a "2-ft" sample means the bottom of the soil sample was at 2-ft). Therefore a "clean" 2-ft sample would indicate soils are unimpacted above a depth of 2-ft.
Sample depths by Weber-Hayes and Lowney were measured
from the top of the collected soil sample (i.e. a "2-ft" sample means the top of the soil sample was at 2-ft). Therefore a "clean" 2-ft sample would indicate soils are unimpacted below a depth of 2-ft.
Weber-Hayes
and Associates:
and .
Lowney Associates:
Environmental Screening Levels (1) (Residential) December 2003 (Sampled by Weber Hayes Associates) G&G 5a
G&G 5b
G&G 5c
B-72(w) Gonzalez
(#1a, 1b, 1c)
B-73(w) Gonzalez
(# 2a,2b,2c)
B-69(w) G&G
(5a,5b,5c
Environmental Screening Levels (ESLs): From the Regional Water Quality Control Board (San Francisco Bay Region) guideline document: Screening for Environmental Concerns at Sites With Contaminated Soil and Groundwater (Final version, 2019). The ESLs are agency-stablished threshold concentrations intended to provide quantitative risk-based guidance on whether further assessment or remediation of contamination is warranted based on risk pathways (protection of human heath, groundwater and/or ecological B-76(w) Clusters# -
3a,3b,3c
B-77(w) Chaz
(#1a, 1b, 1c)
Chaz 1a
Chaz 1b
Gonzalez 2a
Gonzalez 2b
Gonzalez 2c
B-74(w) Clusters
(#1a, 1b, 1c)
B-75(w) Clusters
(# 2a,2b,2c)
B-81c(w) Gerrys 3c
B-89(w) Bay City
(# 2a,2b,2c)
Gerrys 4c
B-85(w) JV
(#1a, 1b, 1c)
JV 1a
JV 1b
JV 1c
Gerrys 4b
B-82(w) Gerrys
(#4a,4b,4c)
Gerrys 4a
US EPA RLs / DTSC-Modified SLs (2) (Residential)
CA DTSC Modified Soil Screening Levels (DTSC-SLs): These are human health, risk-based values established by the California Department of Toxic Substances Control (DTSC), Office of Human and Ecological Risk (HERO), Human Health Risk Assessment (HHRA) Note Number 3, Table 1 , June 2020. <https://dtsc.ca.gov/wpcontent/uploads/sites/31/2019/04/HHRA-Note-3-June-2020-A.pdf >. Note that for those chemicals not posted on the Note 3 website, DTSC-HERO endorses the soil thresholds established on the USEPAs Regional Screening Levels (USEPA-RSLs) website:
https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables, updated November 2020). Both thresholds are listed for transparency, but generally speaking, California uses a more conservative toxicity evaluation for a select number of urban chemicals. This assessment uses the lowest (most conservative threshold as a cleanup goal).
GREEN Box highlight Indicates deepest sample has exceedance (Confirmation sample required at this location)
YELLOW box highlight indicates the analytical result exceeds the Risk-based screening threshold (for residential land use).
Notes
B-86(w) Residence
(#1a, 1b, 1c)
B-88(w) Bay City
(#1a, 1b, 1c)
B-81(w) Gerrys # -
3a,3b,3c
B-81a(w) Gerrys 3a
B-81b(w) Gerrys 3b
Chaz 1c
B-78(w) Chaz
(# 2a,2b,2c)
B-79(w) Gerrys
(#1a, 1b, 1c)
B-80(w) Gerrys
(# 2a,2b,2c)
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
0.5 < 30 3,500 < 120 < 0.0050 (ND)
(0.31 by 8270C) --
Napthalene = 0.31
Indeno (1,2,3-c,d) pyrene = 0.21
All Others = Trace Detections (3)
1.5 < 12 1,800 220 0.036
(1.5 by 8270c) --
Napthalene = 1.5
All Others = Trace Detections (3) Co-located Lead Exceedance B-8(t) 0.5 < 120 32,000 < 500 0.013
(0.22 by 8270c) --
Napthalene = 0.22
All Others = Trace Detections (3)
B-9(t) 0.5 -- -- -- -- --
Napthalene = 0.067
Benzo(a)pyrene = 0.12
Benzo(a)anthracene = 0.39
All Others = Trace Detections (3)
T-2(t) T6 3.5 < 1.2 85^ -- < 0.0050 (ND) Freon 11 =.0019 Trace Detections (3) T-3(t) T9 2 94 240^ -- < 0.0050 (ND) ND Trace Detections (3) T-4(t) T10 1 < 1.2 32 -- < 0.0050 (ND) ND Trace Detections (3) T-6(t) T12 1 < 1.2 250^ -- < 0.0050 (ND) ND Trace Detections (3) T-7(t) T6 1 < 1.2 < 6.5 -- < 0.0050 (ND) ND Trace Detections (3) T-8(t) T12 2 < 2.4 400 -- < 0.0050 (ND) ND Trace Detections (3) T-9(t) T15 2 < 2.4 510 -- < 0.0050 (ND) ND Trace Detections (3) T-11(t) T1 6 < 6 680 -- < 0.0050 (ND) ND Trace Detections (3) T-12(t)
T3 2 < 2.4 800 -- < 0.0050 (ND) ND
Napthalene = 0.043
All Others = Trace Detections (3)
Co-located Lead Exceedance
T-14(t) T10 4 < 1.2 18^ -- < 0.0050 (ND) ND Trace Detections (3) T-15(t) T1 2 < 24 2,000 -- < 0.0050 (ND) ND Trace Detections (3) T-16(t)
T1* 8 < 950 97,000 -- < 0.0050 (ND) ND
Napthalene = 0.28
All Others = Trace Detections (3)
Co-located Lead Exceedance
T-17(t) T1 2 < 2.3 51^ -- < 0.0050 (ND) ND Trace Detections (3) T-18(t)
Debris -- < 24 1,600 -- < 0.0050 (ND) ND
Napthalene = 0.067
All Others = Trace Detections (3)
Co-located Lead & Arsenic Exceedance
260
(NC Hazard)
5100
(Gross
Contamination)
100
(odor)
0.042 (leaching)
3.8 (human health)
Freon 11 = Not Established
2 /2 Freon 11 = 23,000 / 1,200
Environmental Screening Levels (1) Residential
US EPA RLs / DTSC-Modified SLs Not Established
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) B-3(t)
Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Area 8
Area 5
Area 6
Sample Information
Sample
DateOctober 2016 (sampled by Trinity Source Group)
ORIGINAL
Consultant ID
TB-3
TB-8
TB-9
Area 1
Area 2
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270
Napthalene = 0.042 (leaching) & 3.8 (human health)
Benzo(a)pyrene = 0.016
Benzo(a)anthracene = 1.6
Napthalene = 2 / 2
Benzo(a)pyrene = 0.11 / Not established
Benzo(a)anthracene = 1.1 / Not established
Exhibit B
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Sample Information
Sample
Date
ORIGINAL
Consultant ID
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270
0.5 180*J 2,400 -- -- -- --
2 < 1.2 22 -- -- -- --
0.5 670* 5,500 -- -- -- -- Co-located Lead Exceedance
2 4.8*J 39 -- < 0.0050 ND --
0.5 8.3*J 80 -- -- -- --
2 < 1.2 29 -- -- -- --
0.5 3.5*J 45 -- -- -- --
2 6.2*J 38 -- -- -- --
0.5 60*^ 820^ -- -- -- --
2 8.9*J 63 -- -- -- --
0.5 15* 170 -- -- -- --
2 < 1.2 < 6.5 -- -- -- --
0.5 6.5*J 63 -- -- -- --
2 < 1.2 < 6.5 -- -- -- --
0.5 53*^ 750^ -- -- -- --
2 4.9*J 51 -- -- -- --
0.5 110*J 1,300 -- -- -- --
2 10* 98 -- -- -- --
0.5 7.1*J 48 -- -- -- --
2 < 1.2 < 6.5 -- -- -- --
0.5 12* 150 -- -- -- --
2 < 1.2 21 -- -- -- --
0.5 33^J 380^ -- -- -- --
2 18* 78 -- -- -- --
0.5 7.1*J 64 -- -- -- --
2 < 1.2 19*J
-- -- -- --
0.5 150*J 1,600 -- -- -- --
2 < 1.2 < 6.5 -- -- -- --
260
(NC Hazard)
5100
(Gross
100
(odor)
0.042 (leaching)
3.8 (human health)
2 /2
Environmental Screening Levels (1) Residential
US EPA RLs / DTSC-Modified SLs Not Established
SB-7
SB-8
B-21(w)
B-22(w)
B-17(w)
B-12(w)
B-13(w)
B-14(w) SB-5
SB-14
B-18(w)
SB-6
SB-3
SB-4
B-15(w)
B-16(w)
B-20(w) SB-11
SB-12
SB-9
B-19(w) SB-10
SB-13
B-23(w)
B-10(w) SB-1
B-11(w) SB-2 June 2016 (Sampled by Weber Hayes and Associates)
Exhibit B
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Sample Information
Sample
Date
ORIGINAL
Consultant ID
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270 June 200.5 10* 140 -- -- -- --
2 < 1.2 28 -- -- -- --
B-25(w) 2 < 1.2 < 6.5 -- -- -- --
B-26(w) 2 < 1.2 < 6.5 -- -- -- --
B-27(w) 2 5.2^J 14^J
-- 0.023
sec-Butylbenzene = 0.0017J
n-Propylbenzene = 0.0038J
1,2,4-Trimethylbenzene = 0.025
1,3,5-Trimethylbenzene = 0.065
--
4 -- -- -- < 0.0050
sec-Butylbenzene = 0.0017J
n-Propylbenzene = 0.0038J
1,2,4-Trimethylbenzene = 0.025
1,3,5-Trimethylbenzene = 0.065
--
B-28(w) 2 < 1.2 < 6.5 -- -- -- --
B-29(w) 2 5.6^J 23^ -- < 0.0050 ND --
B-30(w) 2 7.3^J 42^ -- -- -- --
B-31(w) 2 5.8^J 33^ -- -- -- --
B-32(w) 2 43^ 180^ -- -- -- --
2 < 1 < 50 -- -- -- --
4 < 1 < 50 -- -- -- --
6 160 1,200 -- -- -- --
2 1.7 < 50 -- -- -- --
3 < 1 < 50 -- -- -- --
0.5 68* 310 < 2.5 -- ND --
2 < 1 < 13 < 2.5 -- ND --
0.5 25* 170 < 2.5 -- ND --
2 110* 360 < 2.5 -- ND --
B-66a(w) 2 19* 78 --- -- --- --
2 11* 33 --- -- --- --
4 3.6* < 13 --- -- --- --
B-66c(w) 2 21* 86 --- -- --- --
260
(NC Hazard)
5100
(Gross
Contamination)
100
(odor)
0.042 (leaching)
3.8 (human health)
sec-Butylbenzene = NE
n-Propylbenzene = NE
1,2,4-Trimethylbenzene = NE
1,3,5-Trimethylbenzene = NE
Varies
2 /2
sec-Butylbenzene = 7,800 / NE
n-Propylbenzene = 58/NE
1,2,4-Trimethylbenzene = 58 /NE
1,3,5-Trimethylbenzene = 780 /210
Not Established Varies December 2003 (Sampled by Weber Hayes and Associates) B-65(w) G&G# - 1a,1b,1c
DP-4
DP-5
G + G -4
DP-9
B-52(L) G + G -1
DP-6
DP-7
DP-8
B-24(w) SB-15
DP-1
DP-2 August 2004 (Sampled by Lowney Associates) B-55(L) G&G 2a
B-66b(w) G&G 2b
G&G 2c
Environmental Screening Levels (1) Residential
US EPA RLs / DTSC-Modified SLs
B-66(w) G&G
(2a,2b,2c)
Exhibit B
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Sample Information
Sample
Date
ORIGINAL
Consultant ID
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270
0.5 60* 700 < 2.5 -- ND --
2 < 1 < 13 < 2.5 -- ND --
0.5 620* 3,300 8.6* --
Toluene= 0.085
Ethylbenzene= 0.12
Xylene= 0.82
-- Co-located with Lead Exceedance
2 < 1 < 13 < 2.5 -- ND --
0.5 < 1 < 13 --- -- --- --
2 < 1 < 13 --- -- --- --
0.5 110* 510 < 2.5 -- ND --
2 130* 980 < 2.5 -- ND --
4 1.5* < 13 --- -- --- --
20 < 1 < 13 --- -- --- --
40 1.1 < 13 --- -- --- --
0.5 6.1* 30 --- -- --- --
2 1.6* < 13 --- -- --- --
0.5 8.8* 58 < 2.5 -- ND --
2 1.6* < 13 < 2.5 -- ND --
0.5 < 1 < 13 --- -- --- --
2 6.4* 31 --- -- --- --
0.5 3.2* 16 --- -- --- --
2 < 1 < 13 --- -- --- --
0.5 5.6* 57 --- -- --- --
2 4.0* 39 --- -- --- --
31* 250 --- -- --- --
2 4.5* 35 --- -- --- --
0.5 15* 130 --- -- --- --
2 5.3* 48 --- -- --- --
260
(NC Hazard)
5100
(Gross
Contamination)
100
(odor)
0.042 (leaching)
3.8 (human health)
Toluene= 2.9 (leaching)/970 (human health)
Ethylbenzene= 1.4 (leaching)/5.1 (human health)
Xylene=.= 2.3 (leaching)/5.6 (human health)
Varies
2 /2
Toluene = 4,900 / 1,100
n-Ethylbenzene = 5.8/not established
Xylenes = 580 /not established
Varies
Environmental Screening Levels (1) Residential
US EPA RLs / DTSC-Modified SLs Not Established
B-77(w) Chaz
(#1a,1b,1c)
Gonzalez
(# 1a, 1b, 1c)
B-70(w) G&G
(Discrete #1)
B-71(w) EB-1
B-75(w)
B-78(w)
B-67(w) G&G
(#3a,3b,3c)
B-74(w) Clusters
(#1a,1b,1c)
B-68(w) G&G
(#4a,4b,4c)
B-69(w) G&G
(#5a,5b,5c)
B-76(w) Clusters
(#3a,3b,3c)
Clusters
(# 2a,2b,2c)
Gonzalez
(#2a, 2b, 2c) December 2003 (Sampled by Weber Hayes and Associates) B-72(w) B-73(w)
Chaz
(#2a,2b,2c)
Exhibit B
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Sample Information
Sample
Date
ORIGINAL
Consultant ID
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270
0.5 45* 200 < 2.5 -- ND --
2 12* 57 < 2.5 -- ND --
0.5 < 1 < 13 < 2.5 -- ND --
2 62* 200 < 2.5 -- ND --
B-80a(w) 2 < 1 < 13 --- -- --- --
2 190* 600 --- -- --- --
4 2.0* < 13 --- -- --- --
B-80c(w) 2 3.2* 16 --- -- --- --
0.5 170* 670 --- -- --- --
2 < 1 < 13 --- -- --- --
0.5 33* 130 --- -- --- --
2 < 1 < 13 --- -- --- --
0.5 1.7* < 13 < 2.5 -- ND --
2 110 390 8.9 --
Toluene= 0.51
Ethylbenzene= 0.19
Xylene= 0.99
--
4 4.5* < 13 --- -- --- --
0.5 8.6* < 13 --- -- --- --
2 2.1* < 13 --- -- --- --
0.5 12* 56 --- -- --- --
2 34* 140 --- -- --- --
0.5 14* 22* < 2.5 -- ND --
2 500* 1,400* < 2.5 -- ND --
4 1.5*6 < 13 --- -- --- --
0.5 6.3* 33 --- -- --- --
2 1.5* 15 --- -- --- --
0.5 8.9* 54 --- -- --- --
2 9.4* 64 --- -- --- --
260
(NC Hazard)
5100
(Gross
Contamination)
100
(odor)
0.042 (leaching)
3.8 (human health)
Toluene= 3.2 (leaching)/1,100 (human health)
Ethylbenzene= 0.43 (leaching)/5.9 (human health)
Xylene=.= 2.1 (leaching)/580 (human health)
Varies
2 /2
Toluene = 4,900 / 1,100
Ethylbenzene = 5.8/not established
Xylenes = 580 /not established
Not Established Varies
Gerrys
(#4a,4b,4c)
B-83(w) Gerrys
(Discrete)
B-80b(w) Gerrys 2b
B-86(w) Residence
(1a,1b,1c)
B-87(w) Residence
(#1, discrete)
Gerrys
(1a,1b,1c)
B-80(w) Gerrys
(#2a,2b,2c)
Gerrys 2a
Gerrys
(#3a,3b,3c)
B-82(w)
B-79(w)
RWQCB Environmental Screening Levels (1)
(Residential Land Use)
US EPA RLs / DTSC-Modified SLs (2)
(Residential Land Use) December 2003 (Sampled by Weber Hayes and Associates) Gerrys 2c
B-81(w)
B-88(w) Bay City
(#1a,1b,1c)
B-89(w) Bay City
(2a,2b,2c)
B-85(w) JV
(1a,1b,1c)
Exhibit B
UPDATED
Sample ID Depth
TPH as
DIESEL
TPH as
MOTOR OIL
TPH as
Gasoline Naphthalene All other VOCs
Comments
(& Co-Located Exceedences)
Table 4
Additional Soil Sample Test Results: Volatile Organic Compounds & Fuel Fingerprint 511 Ohlone Parkway, Watsonville
All soil results are in milligrams per Kilogram (mg/Kg) Fuel Fingerprint
by EPA Method 6010B
Laboratory Analytical Results
Sample Information
Sample
Date
ORIGINAL
Consultant ID
Volatile Organic Compounds (VOCs)
by EPA Method 8260B Semivolatile Organic
Compounds (SVOCs)
by EPA 8270
Notes
1 =
2 =
3 =
**= Note individual metals having DTSC-modified SL are identified by ** (All others are based on USEPA RSL's) ND = Freon 11 = Trichlorofluoromethane
-- =
B =
J =
^ =
* =
BOLD =
BOLD = Indicates deepest sample has exceedence (Confirmation sample required at this location) (w) = Weber-Hayes Associates: .
(L) =
(t) = Trinity Source Group:
Analytical result above Residential ESL.
Chromatograph is not typical of Diesel/Motor Oil
Detection and Quantitation Limits are raised due to sample dilution Sample was not analyzed for this constituent
Analyte not detected above the laboratory Method Detection Limit (MDL).
Environmental Screening Levels (ESLs): From the Regional Water Quality Control Board (San Francisco Bay Region) guideline document: Screening for Environmental Concerns at Sites With Contaminated Soil and Groundwater (Final version, 2019). The ESLs are agency-stablished threshold concentrations intended to provide quantitative risk-based guidance on whether further assessment or remediation of contamination is warranted based on risk pathways (protection of human heath, groundwater and/or ecological.
Trace concentrations of semi-volatile compounds detected, but all well below agency threshold. See Appendix A for sampling results. Semi-Volatile compounds detected( at treace levels) included : (Anthracene, Benzo(a)anthracene, Benzo(b)flouranthene, Benzo(k)fluoranthene, Benzo(a)pyrene, Benzo(g,h,l,)perylene, Chrysene, Fluoranthene, Indeno(1,2,3-cd)pyrene, Phenanthrene, Pyrene) Laboratory reports that the detection value is between MDL and PQL, and should be considered an estimate.
The same analyte is found in the associated blank.
CA DTSC Modified Soil Screening Levels (DTSC-SLs): These are human health, risk-based values established by the California Department of Toxic Substances Control (DTSC), Office of Human and Ecological Risk (HERO), Human Health Risk Assessment (HHRA) Note Number 3, Table 1 , June 2020. <https://dtsc.ca.gov/wp-content/uploads/sites/31/2019/04/HHRA-Note-3-June-2020-A.pdf >. Note that for those chemicals not posted on the Note 3 website, DTSC-HERO endorses the soil thesholds established on the USEPAs Regional Screening Levels (USEPA-RSLs) website: (https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables, updated November 2020). Both thresholds are listed for transparancy, but generally speaking, California uses a more conservative toxicity evaluation for a select number of urban chemicals. This assessment uses the lowest (most conservative theshold as a cleanup goal).
and Lowney Associates: .
Sample depths by Trinity were measured from the base of the collected soil sample (i.e. a "2-ft" sample means the bottom of the soil sample was at 2-ft). Therefore a "clean" 2-ft sample would indicate soils are unimpacted above a depth of 2-ft.
Sample depths by Weber-Hayes and Lowney were measured from the top of the collected soil sample (i.e. a "2-ft" sample means the top of the soil sample was at 2-ft). Therefore a "clean" 2-ft sample would indicate soils are unimpacted below a depth of 2-ft.
Exhibit B
Renewed Remedial Action Plan
511 Ohlone Parkway, Watsonville
Weber, Hayes and Associates
APPENDIX A
Design Plans for the Hillcrest Subdivision Development
(Ramsey Engineering)
• Existing Conditions & Jurisdictional Boundary Limits (to be professional survey-staked) • Development & Environmental Rough Grading Plans
• Remediation Pit Grading Plan & Retaining Wall Plan
• Erosion Control Details
• Preliminary Site Redevelopment Layout
• Project Description (from updated EIR)
Exhibit B
SD
OHLONE PARKWAY
ERRINGTON RD WATSONVILLE SLOUGH
WATSONVILLE
SLOUGH APN 018-583-17 WATSONVILLE, CITY OF 2006-0061336 APN 018-381-01 CALIFORNIA SUNSHINE DEVELOPMENT, LLC. 2017-0017056 APN 018-381-03 ERTA RAYMOND W TRUST 2015-0046117 APN 018-372-18 KRUETZFELDT ET AL 2010-0048222 APN 018-372-17 CAMPOS ANTHONY (TE)/ CAMPOS REBECCA L (TE) 2002-0059607 APN 018-661-31 SEA VIEW RANCH HOMEOWNERS ASSOC. 2004-0083053APN 018-651-33 SEA VIEW RANCH HOMEOWNERS ASSOC. 2004-0083052 (E) PARKING LOT APN 018-711-21 PACIFIC SUNSHINE DEV. LLC 2014-D0D046 LOMA VISTA DRAWN BY:
BY DATE DESCRIPTION
REVISION BLOCK DESIGNED BY: DATE: SCALE: PROJECT NO: SHEET: GSDMR 08/12/2021 AS NOTED 20-021 NUMBER CIVIL ENGINEERING LAND PLANNING PROJECT MANAGEMENT CONSTRUCTION SUPPORT QSD AND QSP SERIVCES 2905 KRISTIE COURT SANTA CRUZ, CA 95065 TEL (831) 462-2905 www.ramseycivilengineering.com DAVID RAMSEY DATE RCE# 73735 APN# 018-372-14 PLAN TYPE
HILLCREST SUBDIVISION
511 OHLONE PARKWAY, WATSONVILLE, CA, 95076
DAV I D RAMS E Y NO. C73735
R GE I ST ERED
PROFESS IONAL
ENGI NEER
S TAT E
OF CAL I FORNIA
CIVI L RESIDENTIAL SUBDIVISION
GS/DMR 09/29/2021 RESPONSE 1 - PLAN CHECK COMMENTS 09/21/2021 GS/DMR 01/20/2022 RESPONSE 2 - PLAN CHECK COMMENTS 10/08/2021 B A
GS/DMR 03/18/2022 RESPONSE 3 - PLAN CHECK COMMENTS 03/11/2022 C C1.0 COVER SHEET AP ANGLE POINT APN ASSESSORS PARCEL NUMBER BRW BOTTOM OF RETAINING WALL BS BOTTOM OF STAIRS BSW BACK OF SIDEWALK BW BOTTOM OF WALL B/W BACK OF SIDEWALK CB CATCH BASIN CBC CALIFORNIA BUILDING CODE CDFW CALIFORNIA DEPARTMENT OF FISH & WILDLIFE CO CLEANOUT CONC CONCRETE COTG CLEANOUT TO GRADE DIP DUCTILE IRON PIPE DS DOWN SPOUT DTL DETAIL DWG DRAWING DWY DRIVEWAY EG EXISTING GROUND EP EDGE OF PAVEMENT EV ELECTRIC VEHICLE EVAE EMERGENCY VEHICLE ACCESS EASEMENT (E) EXISTING EX. EXISTING FC FACE OF CURB FG FINISH GRADE FF FINISH FLOOR FL FLOWLINE FNC FENCE FT FOOT/FEET GB GRADE BREAK GFL GUTTER FLOW LINE HDPE HIGH-DENSITY POLYETHYLENE HP HIGH POINT INV INVERT LF LINEAR FOOT LOG LIMIT OF GRADING LP LOW POINT MIN MINIMUM MH MANHOLE
N NORTH NE NORTHEAST NTS NOT TO SCALE NW NORTHWEST OC ON CENTER OCEW ON CENTER, EACH WAY OH OVERHEAD PAE PUBLIC ACCESS EASEMENT PCC PORTLAND CEMENT CONCRETE PP POWER POLE PL PROPERTY LINE POC POINT OF CONNECTION PUE PUBLIC UTILITY EASEMENT PV PAVEMENT PVC POLYVINYL CHLORIDE PIPE
R RADIUS RC RELATIVE COMPACTION RG ROUGH GRADE RWQCB REGIONAL WATER QUALITY CONTROL BOARD
S SOUTH, SLOPE SD STORM DRAIN SCDI STORM DRAIN CURB INLET SDE STORM DRAIN EASEMENT SE SOUTHEAST SFR SINGLE FAMILY RESIDENCE SHT SHEET SS SANITARY SEWER SSCO SANITARY SEWER CLEAN OUT STD STANDARD STME SIDEWALK AND TRAIL MAINTENANCE EASEMENT TC TOP OF CURB TFC TOP OF FLUSH CURB TRW TOP OF RETAINING WALL TS TOP OF STAIRS TW TOP OF WALL USA UNDERGROUND SERVICE ALERT USACE US ARMY CORPS OF ENGINEERS W WEST, WATER ABBREVIATIONS REMEDIATION & ROUGH GRADING PLAN FOR THE SUBDIVISION MAP & IMPROVEMENT PLANS HILLCREST SUBDIVISION 511 OHLONE PARKWAY WATSONVILLE, CALIFORNIA 95076 C3.0 ESTIMATED CUT / FILL ANALYSIS PLAN C2.0 C5.3 C5.4 ROUGH GRADING EROSION CONTROL PLAN C5.5 EROSION CONTROL NOTES AND DETAILS C5.6 WALL A (PIT WALL) PROFILE AND DETAILS EXISTING CONDITIONS C5.7 SECTION B & TEMPORARY BASIN DETAIL REMEDIATION & ROUGH GRADING INDEX OF SHEETS SHEET NO. DESCRIPTION C1.0 COVER SHEET C5.1 REMEDIATION PIT GRADING PLAN C4.0 *NOT USED* C5.2 C5.8 C5.9 C5.0 FULL SITE ROUGH GRADING & DRAINAGE PLAN SITE ENVIRONMENTAL GRADING PLAN *NOT USED* ROUGH GRADING - WALL 'A' C5.10 CUT & FILL SECTIONS GRAPHIC SCALE: 1 INCH = FEET 80' 0 40' 80' 160' 80 ESTIMATED SLOPE ANALYSIS C5.11 *NOT USED* NOTE: CONTRACTOR/DEVELOPER SHALL REFER TO THE PROJECT DEVELOPMENT AGREEMENT PRIOR TO COMMENCEMENT OF WORK. THE CONTRACTOR/DEVELOPER SHALL REVIEW THE MITIGATION MONITORING & REPORTING PLAN (MMRP) WITHIN THE DEVELOPMENT AGREEMENT PRIOR TO COMMENCEMENT OF WORK. THE MMRP HAS SPECIFIC DIRECTION AND REQUIREMENTS FOR EACH PHASE OF THE PROJECT, AND SHALL BE ADHERED TO DURING THE DEVELOPMENT PROCESS. SITE VICINITY MAP N.T.S. MAP DATA © GOOGLE C1.1-C1.3 CONDITIONS OF APPROVAL
Exhibit B
CITY OF WATSONVILLE EXHIBIT “B” CITY COUNCIL APPLICATION NO: P155 APNS:018-372-14 & 018-381-01 APPLICANT: CALIFORNIA SUNSHINE DEVELOPMENT LLC HEARING DATE: JULY 6, 2021 TENTATIVE MAP CONDITIONS OF APPROVAL THESE CONDITIONS OF APPROVAL APPLY TO TENTATIVE MAP FOR THE PROPOSED SUNSHINE VISTA PHASED DEVELOPMENT PROJECT,
A SUBDIVISION OF
A 13± ACRE SITE INTO 144 RESIDENTIAL LOTS AND SIX COMMON AREA PARCELS, LOCATED AT 511 OHLONE PARKWAY. FOR THE PURPOSE OF THESE CONDITIONS, THE TERM “APPLICANT” SHALL ALSO MEAN THE DEVELOPER, SUBDIVIDER, OWNER OR ANY SUCCESSOR(S) IN INTEREST TO THE TERMS OF THIS APPROVAL. STANDARD CONDITIONS: 1. CONDITIONAL APPROVAL TIMEFRAME. THE TENTATIVE MAP IS CONDITIONALLY APPROVED FOR 24 MONTHS, IN ACCORDANCE WITH SECTION 13-4.10(A) OF THE WATSONVILLE MUNICIPAL CODE (WMC) AND SECTION 66452.6 OF THE STATE SUBDIVISION MAP ACT. THE MAP SHALL BE NULL AND VOID IF NOT RECORDED WITHIN 24 MONTHS FROM THE EFFECTIVE DATE OF THE APPROVAL THEREOF. TIME EXTENSIONS MAY BE GRANTED PROVIDED THE APPLICANT REQUESTS SAME AT LEAST THIRTY DAYS IN ADVANCE OF THE EXPIRATION OF THE APPROVAL BY THE CITY COUNCIL. THIS APPROVAL APPLIES TO PLANS TITLED "TENTATIVE MAP, SUNSHINE VISTA," AND RECEIVED BY THE COMMUNITY DEVELOPMENT DEPARTMENT ON JUNE 8, 2021(CDD-P) 2. FINAL MAP. THE FINAL MAP SHALL BE IN SUBSTANTIAL CONFORMANCE WITH THE APPROVED TENTATIVE MAP UNLESS MODIFIED BY SUBSEQUENT CONDITIONS OF APPROVAL. AFTER APPROVAL IS GRANTED, MODIFICATIONS TO THE TENTATIVE MAP OR TO CONDITIONS IMPOSED MAY BE CONSIDERED IN ACCORDANCE WITH TITLE 13 (SUBDIVISION ORDINANCE) OF THE WATSONVILLE MUNICIPAL CODE. (CDD-E, PW) 3. FINDINGS. APPROVAL IS SUBJECT TO THE FINDINGS AND SUPPORTIVE EVIDENCE IN ACCORDANCE WITH WMC SECTION 13-04.09(D) OF THE SUBDIVISION ORDINANCE WITH SAID FINDINGS SET FORTH IN EXHIBIT “A” AND MADE A PART OF THIS TENTATIVE MAP. (CDD-E) 4. SUBSTANTIAL CONFORMANCE. THE PROJECT SHALL BE IN COMPLIANCE WITH ALL STANDARDS AND/OR CONDITIONS OF ALL LOCAL, STATE, AND FEDERAL CODES AND ORDINANCES, APPROPRIATE DEVELOPMENT STANDARDS, AND CURRENT CITY POLICIES AS MODIFIED BY THE SPECIAL USE PERMIT WITH DESIGN REVIEW. ANY SUBSTANTIAL DEVIATION WILL BE GROUNDS FOR REVIEW BY THE CITY AND MAY POSSIBLY RESULT IN REVOCATION OF THE TENTATIVE MAP APPROVAL. (CDD-P, -E, -B) 5. INDEMNITY AGREEMENT. THE APPLICANT SHALL AGREE IN WRITING TO INDEMNIFY AND DEFEND THE CITY IN CASE OF LEGAL CHALLENGE ARISING OUT OF THE CITY APPROVING THE PROJECT. SAID AGREEMENT SHALL BE SUBJECT TO APPROVAL OF THE CITY ATTORNEY. (CAT) 6. ON/OFF SITE PERMIT. SEPARATE ON/OFF SITE PERMITS ARE REQUIRED FOR WORK IN THE PUBLIC RIGHT-OF-WAY. (CDD-P) POTENTIAL DEVELOPMENT AGREEMENT AND APPLICABLE STATUTORY EXTENSIONS: 7. DEVELOPMENT AGREEMENT. THE APPLICANT MAY REQUEST TO ENTER INTO
A DEVELOPMENT AGREEMENT WITH THE CITY IN FORM ACCEPTABLE TO THE CITY COMMUNITY DEVELOPMENT DIRECTOR AND CITY ATTORNEY AND AS APPROVED BY THE CITY COUNCIL BY ORDINANCE TO PROVIDE, AT A MINIMUM, AMONG OTHER SPECIFICS, THE FOLLOWING DETAILS: [I] AS TO PROJECT PHASING, INCLUDING THE FILING OF UP TO FOUR (4) FINAL MAPS; [II] THE CONSTRUCTION OF PROJECT INFRASTRUCTURE IMPROVEMENTS; [III] PROVISIONS OF AFFORDABLE HOUSING WITHIN THE PHASES OF THE PROJECT; [IV] THE SCHEDULING OF PAYMENT TO THE CITY OF PROJECT FEES OVER THE COURSE OF THE PHASING OF THE PROJECT; [V] THE TIMING OF THE DEVELOPMENT AND VESTING OF DEVELOPMENT RIGHTS; [VI] PARTICULARS AS TO PROJECT REQUIREMENTS, DEDICATIONS, AND EXACTIONS, OFF-SITE IMPROVEMENTS, OPEN SPACE REQUIREMENTS; [VII] PROJECT REVIEW; AND [VIII] SUCH OTHER PARTICULARS AS THE APPLICANT AND THE CITY AGREE UPON AS BEING RELEVANT TO THE CERTAINTY AS TO THE CONTINUITY OF THE PROJECT AND APPLICABLE LAWS AND REQUIREMENTS. (CDD-P, CAT) 8. STATUTORY EXTENSIONS. IN ACCORDANCE WITH GOVERNMENT CODE SECTION 66456.1, THE APPLICANT MAY FILE MULTIPLE FINAL MAPS RELATING TO AN APPROVED OR CONDITIONALLY APPROVED TENTATIVE MAP PRIOR TO THE EXPIRATION OF THE TENTATIVE MAP. THE TENTATIVE MAP MAY BE EXTENDED FOR MAPS SUBJECT TO REQUIREMENTS TO CONSTRUCT CERTAIN OFF- SITE IMPROVEMENTS, PURSUANT TO THE DETAILED PROVISIONS OF GOVERNMENT CODE SECTION 66452.6. THE RIGHT OF THE SUBDIVIDER TO FILE MULTIPLE FINAL MAPS SHALL NOT LIMIT THE AUTHORITY OF THE LOCAL AGENCY TO IMPOSE REASONABLE CONDITIONS RELATING TO THE FILING OF MULTIPLE FINAL MAPS. (CDD-P, CAT) IMPROVEMENT PLANS SHALL BE SUBMITTED BEFORE REVIEWING FINAL MAP AND INCLUDE THE FOLLOWING: 9. OFF-SITE IMPROVEMENTS: SECONDARY ACCESS AND ROUNDABOUT. APPLICANT SHALL (a) PROVIDE A 12-FOOT WIDE INGRESS-ONLY SECONDARY ACCESS VIA ERRINGTON ROAD WITHIN THE 30-FOOT WIDE RIGHT-OF-WAY ON THE EAST SIDE OF THE 1.7± ACRE PROPERTY OWNED BY THE SEA VIEW RANCH HOMEOWNERS ASSOCIATION (APN 018-661-31) AND (B) INSTALL A ROUNDABOUT AT THE INTERSECTION OF OHLONE PARKWAY AND LOMA VISTA DRIVE. ERRINGTON ROAD SHALL BE IMPROVED TO A 20-YEAR ROAD STANDARD AND THE CC&RS SHALL IDENTIFY THE HOA ESTABLISHED FOR THE PROJECT SITE AS THE RESPONSIBLE PARTY FOR MAINTENANCE OF THE ROADWAY. THE APPLICANT SHALL DESIGN AND CONSTRUCT THE ROUNDABOUT AS PART OF THE THIRD PHASE OF DEVELOPMENT. THE CITY SHALL DETERMINE
A COST SHARING ARRANGEMENT WITH THE APPLICANT FOR INSTALLING THE ROUNDABOUT AS PART OF A SEPARATE DEVELOPMENT AGREEMENT (SEE CONDITION OF APPROVAL NO. 6). (CDD-E) 10. OFF-SITE TREE REPLACEMENT. APPLICANT SHALL REPLACE EXISTING TREES ON SEA VIEW RANCH SUBDIVISION PROPERTY TO BE REMOVED AS PART OF THE EXTENSION OF LOMA VISTA DRIVE TO THE PROJECT SITE AT A RATIO OF 3:1. AS SHOWN ON THE EXISTING CONDITIONS PLAN (SHEET C2.0), 12 EXISTING TREES WOULD BE REMOVED, CONSISTING OF ONE PLUM, SIX BIRCH AND FIVE REDWOOD TREES (I.E., TREE #98, 100-110). THEREFORE, 36 NEW TREES SHALL BE PLANTED. THE APPLICANT SHALL COORDINATE WITH THE HOA FOR THE LAS CASITAS NEIGHBORHOOD ON THE TYPE, LOCATION AND SIZE OF SAID REPLACEMENT TREES. (CDD-P) 11. IMPROVEMENT AGREEMENT. APPLICANT SHALL ENTER INTO AN IMPROVEMENT AGREEMENT WITH THE CITY TO INSTALL PUBLIC AND OFFSITE IMPROVEMENTS, FURNISH SECURITIES, INSURANCES AND PAY THE COST OF ALL ENGINEERING REVIEW AND INSPECTION. SAID AGREEMENT SHALL BE IN A FORM ACCEPTABLE TO THE CITY ATTORNEY. APPLICANT SHALL PROVIDE AN ITEMIZED ESTIMATE OF THE COST OF CONSTRUCTION OF ALL OFFSITE AND PUBLIC IMPROVEMENTS. THE COST ESTIMATE SHALL BE APPROVED BY THE CITY AND USED TO ESTABLISH THE AMOUNT OF THE SECURITIES. (CDD-E, CAT) 12. IMPROVEMENT STANDARDS. ALL IMPROVEMENTS IN THE PUBLIC OR PRIVATE RIGHT-OF-WAY SHALL COMPLY WITH THE MOST CURRENT VERSION OF THE CITY OF WATSONVILLE PUBLIC IMPROVEMENT STANDARDS. PLANS AND DESIGN DOCUMENTS SHALL BE SIGNED AND STAMPED BY A CALIFORNIA LICENSED ARCHITECT OR ENGINEER. STANDARDS THAT ARE DIFFERENT THAN THOSE OF THE CITY MUST BE APPROVED BY THE CITY. (CDD-E) 13. IMPROVEMENT PLANS. IMPROVEMENT PLANS SHALL SUBSTANTIALLY CONFORM TO THE TENTATIVE MAP. PROVIDE ALL EXISTING AND PROPOSED IMPROVEMENTS AND STRIPING WITHIN THE ROAD RIGHT-OF-WAY. PLANS SHALL BE DESIGNED IN ACCORDANCE WITH THE CITY'S PUBLIC IMPROVEMENT STANDARDS. (CDD-E, -P) 14. CIVIL PLANS. IMPROVEMENT PLAN SUBMITTAL SHALL INCLUDE CIVIL PLANS PREPARED BY A CIVIL ENGINEER LICENSED TO PRACTICE IN THE STATE OF CALIFORNIA. CIVIL PLANS SHALL INCLUDE GRADING, DRAINAGE, AND EROSION CONTROL PLANS. (CDD-E, PW) 15. CC&RS. THE APPLICANT SHALL PREPARE COVENANTS, CONDITIONS, AND RESTRICTIONS (CC&RS) FOR REVIEW AND APPROVAL BY THE COMMUNITY DEVELOPMENT DEPARTMENT AND CITY ATTORNEY.
A DECLARATION OF CC&RS SHALL BE RECORDED ON THE ENTIRE PROPERTY CONCURRENTLY WITH THE FINAL MAP. SAID CC&RS SHALL INCLUDE PROVISION FOR THE ESTABLISHMENT OF A HOMEOWNERS ASSOCIATION (HOA) WITH THE RESPONSIBILITY TO MAINTAIN ITEMS THAT ARE SPECIFIED THEREIN. CC&RS PROVISION SHALL INCLUDE THE FOLLOWING SPECIFIC ELEMENTS: a. REQUIRE THE ESTABLISHMENT OF ONE HOA FOR THE ENTIRE DEVELOPMENT AREA; b. REQUIRE THE MAINTENANCE AND OPERATIONS BY THE HOA OF THE COMMON OPEN SPACE AREAS (INCLUDING COMMON RECREATIONAL AREAS), PRIVATE ROADS, CURBS, GUTTERS, SIDEWALKS, WALKWAYS, STREET LIGHTING, STREET TREES, ON-STREET GUEST PARKING, ACCESSIBLE PARKING, LANDSCAPING (INCLUDING LANDSCAPING IN THE RIPARIAN/NATURAL OPEN SPACE AREA), TRAILS (INCLUDING THE EXTENSION OF THE PUBLIC ACCESS TRAIL WITHIN THE RIPARIAN SETBACK AREA), UTILITY EASEMENTS, EXTERIOR FENCES, RETAINING WALLS, AND STORM WATER MANAGEMENT AND DETENTION FACILITIES (INCLUDING BIORETENTION “RAINGARDEN” AREAS); c. PROVIDE A BUDGET FOR MAINTAINING FACILITIES WITHIN COMMON AREAS; d. CREATE OBLIGATIONS AND A METHOD TO AMORTIZE AND PAY FOR (TOGETHER WITH LIEN RIGHTS) THE MAINTENANCE AND REPAIR OF FACILITIES WITHIN COMMON AREAS; e. PROHIBIT ADDITIONS TO OR REMODELING OF A STRUCTURE WHICH EXTENDS BEYOND THE ORIGINAL FOOTPRINT; f. REQUIRE THAT GARAGE INTERIORS NOT BE CONVERTED TO OR USED FOR ANY PURPOSE WHICH INTERFERES WITH PARKING OF THE NUMBER OF MOTOR VEHICLES FOR WHICH THE GARAGE WAS DESIGNED, AND NO TEMPORARY STORAGE SHALL BE ALLOWED WHICH WOULD INTERFERE WITH THE PARKING OF SAID VEHICLES; AND g. REQUIRE THAT THE HOA SHALL NOT DISSOLVE OR RELINQUISH THEIR MAINTENANCE OBLIGATIONS WITHOUT REVIEW BY THE CITY MANAGER AND APPROVAL BY THE CITY COUNCIL AT A PUBLIC HEARING. (CDD-P, -E, CAT) 16. MAINTENANCE OF DETENTION BASINS, NATURE TRAIL & ADJACENT LANDSCAPING. PROVIDE DRAFT LANGUAGE FOR INCORPORATION IN THE CC&RS DESCRIBING MAINTENANCE RESPONSIBILITY OF AND SCHEDULE FOR DETENTION BASINS, NATURE TRAIL AND ADJACENT LANDSCAPING FOR REVIEW AND COMMENT BY THE PUBLIC WORKS AND UTILITIES DEPARTMENT. INCLUDE LANGUAGE THAT THE HOA SHALL IMPLEMENT SAID MAINTENANCE IN ACCORDANCE WITH SUNSHINE VISTA NATURE TRAIL VEGETATION, LANDSCAPING AND RAIN GARDEN MAINTENANCE AND OPERATIONS PLAN. PLAN SHALL BE REVIEWED AND APPROVED BY THE PUBLIC WORKS DIRECTOR OR DESIGNEE. (CDD-P, PW) 17. ADDRESSING POTENTIAL HOMELESS ISSUES. PROVIDE DRAFT LANGUAGE FOR INCORPORATION IN THE CC&RS FOR HOW THE HOA WILL ADDRESS POTENTIAL HOMELESS ENCAMPMENTS, INCLUDING BUT NOT LIMITED TO THE FOLLOWING: a. CALL POLICE WITHIN 24 HOURS OF COMPLAINT OF ILLEGAL CAMPING, FIRES, AND/OR ALCOHOL USE; b. CLEANUP OR HIRE CITY TO CLEANUP ENCAMPMENTS OR ENCAMPMENT TRASH IN AND AROUND DETENTION BASINS WITHIN 72 HOURS; c. IF CITY CALLED TO PROVIDE SERVICE THERE WILL BE FEE FOR SERVICE TO BE PAID BY THE HOA; d. IF ISSUE PERSISTS BEYOND 72 HOURS, CITY MAY MOVE FORWARD WITH CLEANUP AND CHARGE FEE FOR SERVICE TO BE PAID BY THE HOA; e. REPORT ALL SUSPICIOUS ACTIVITY WITHIN 24 HOURS; AND f. POST SIGNAGE THAT STATES WHAT ENFORCEABLE ACTIONS ARE NOT PERMITTED IN AREA AT TRAIL ENTRANCES AND DETENTION BASINS. USE SAME SIGNAGE INSTALLED BY CITY AT OTHER LOCATIONS WITHIN SLOUGH (SEE ATTACHED EXAMPLE). 18. CC&RS AND LIABILITY. THE ISSUANCE OF THIS PERMIT DOES NOT EXEMPT THE OWNER OF THE PROPERTY FOR WHICH THIS PERMIT IS ISSUED FROM LIABILITIES WHICH MAY ARISE OUT OF FAILURE TO COMPLY WITH APPLICABLE CC&RS. PLEASE BE ADVISED THAT THE PROPERTY OWNER PREPARE CC&R'S FOR THE PROJECT AND PRIVATE LEGAL ACTION MAY BE BROUGHT AGAINST THE PROPERTY OWNER FOR FAILURE TO COMPLY WITH ALL APPLICABLE CC&RS AND THAT THE CITY OF WATSONVILLE DOES NOT ENFORCE CC&RS. (CAT) 19. UNRESTRICTED USE OF COMMON OPEN SPACE. THE CC&RS SHALL INCLUDE A PROVISION THAT THERE WILL BE NO USE RESTRICTIONS OF COMMON OPEN SPACE AREAS AND/OR FACILITIES BY VISITORS, SUCH AS THE CHILDREN'S PLAY STRUCTURE IN OPEN SPACE AREA C. (CDD-P, CAT) 20. PUBLIC ACCESS & UTILITY EASEMENTS. RIGHTS-OF-WAY AND PUBLIC UTILITY EASEMENTS SHALL BE OFFERED FOR DEDICATION TO THE CITY BY CERTIFICATE ON THE FINAL MAP. EASEMENTS SHALL BE FOR ACCESS, CONSTRUCTION, MAINTENANCE AND UTILITIES. (CDD-E) 21. OFF-SITE EASEMENTS. APPLICANT SHALL SECURE EASEMENTS FOR ALL FACILITIES, WHICH ARE TO BE LOCATED OFF-SITE, ON PRIVATE PROPERTY, INCLUDING BUT NOT LIMITED TO DRAINAGE OUTFALLS, GUEST PARKING STALLS, AND EMERGENCY ACCESS. (CDD-E, -P) 22. WRITTEN AUTHORIZATION. NO PERMANENT IMPROVEMENTS MAY BE CONSTRUCTED OVER ANY EXISTING EASEMENTS WITHOUT WRITTEN AUTHORIZATION FROM THE EASEMENT HOLDER. (CDD-E) 23. NATURE TRAIL DESIGN. THE APPLICANT SHALL REVISE THE PLAN SET TO PROVIDE A TYPICAL SECTION, PROFILE AND DETAIL OF THE NATURE TRAIL FOR REVIEW AND APPROVAL OF THE PUBLIC WORKS DIRECTOR OR DESIGNEE. THE NATURE TRAIL SHALL BE DESIGNED TO WITHSTAND LOADING OF VEHICLE(S) ACCESSING THE LANDSCAPE AREAS, DETENTION BASINS AND SANITARY SEWER LINE. THE TYPICAL SECTION, PROFILE AND DETAIL SHALL SHOW, AT MINIMUM, THE DEPTH OF PAVEMENT, BASE ROCK AND SCARIFYING OF NATIVE MATERIAL. (CDD-E, PW) 24. FUTURE PEDESTRIAN BRIDGE CONNECTION. THE CITY'S TRAILS AND BICYCLE MASTER PLAN (2012) SHOWS A FUTURE BRIDGE ACROSS THE WATSONVILLE SLOUGH TO THE EXISTING TRAIL ON THE NORTH SIDE OF THE SLOUGH. THE APPLICANT SHALL THEREFORE EXTEND A “SIDEWALK AND TRAIL MAINTENANCE EASEMENT” FROM THE PROPOSED TRAIL TO THE EXISTING SANITARY SEWER LINE AT THE NORTHEAST CORNER OF THE PROPERTY TO ALLOW CONSTRUCTION OF A FUTURE PEDESTRIAN BRIDGE BY THE CITY ACROSS THE WATSONVILLE SLOUGH ALONG THE SANITARY SEWER LINE. (CDD-E, PW) 25. MANHOLE AND TRAIL ALIGNMENT. THE APPLICANT SHALL REVISE THE UTILITY PLAN (SHEET C6.0) TO MOVE THE LOCATION OF THE MANHOLE OR TRAIL ALIGNMENT SUCH THAT SSMH 16 IS LOCATED TO THE SIDE OF THE NATURE TRAIL. (CDD-E, PW) 26. TRAIL TURNAROUND. THE PROJECT SHALL INCLUDE A TURNAROUND AT THE NORTHWEST END OF THE TRAIL, SUFFICIENT TO ACCOMMODATE THE TURNAROUND OF A TRAIL MAINTENANCE VEHICLE. (PW) 27. CONCRETE CAP. THE APPLICANT SHALL REVISE THE GRADING AND DRAINAGE PLAN (SHEET C5.2) WITH A NOTE STATING THAT ANY CONCRETE CAP AND ACCESS PATH AT THE KNOB AREA SHALL NOT COVER THE EXISTING SANITARY SEWER LINE AND AREA OF FUTURE PEDESTRIAN BRIDGE. (CDD-E, PW) 28. EROSION CONTROL. THE APPLICANT SHALL REVISE THE ENVIRONMENTAL GRADING DETAIL (SHEET C5.1) TO SPECIFY THAT ALL EROSION CONTROL MATERIALS, INCLUDING FIBER ROLLS AND EROSION CONTROL BLANKETS, SHALL USE ONLY BIODEGRADABLE MATERIALS AND AVOID ALL PLASTIC NETTING DUE TO POTENTIAL IMPACTS ON WILDLIFE. (CDD-E) 29. EROSION CONTROL PLANS. EROSION CONTROL PLANS SHALL PROVIDE BEST MANAGEMENT PRACTICES (BMPS) DURING CONSTRUCTION TO PREVENT SEDIMENT, DEBRIS AND CONTAMINANTS FROM DRAINING OFFSITE. BMP'S SHALL COMPLY WITH THE CITY OF WATSONVILLE EROSION CONTROL STANDARDS AND THE EROSION AND SEDIMENT CONTROL FIELD MANUAL BY THE CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD, SAN FRANCISCO REGION, LATEST EDITION. ALL EROSION CONTROL SHALL BE INSTALLED PRIOR TO OCTOBER 15 AND BE MAINTAINED IN PLACE UNTIL APRIL 15. THE APPLICANT SHALL ENSURE THAT ALL CONTRACTORS ARE AWARE OF ALL EROSION CONTROL STANDARDS AND BMP'S. (CDD-E) 30. POST-CONSTRUCTION STORMWATER MANAGEMENT REQUIREMENTS. THE APPLICANT SHALL COMPLY WITH WMC SECTION 6-3.535 POST-CONSTRUCTION REQUIREMENTS. (CDD- E) 31. GRADING PLANS. GRADING PLANS SHALL COMPLY WITH THE CITY GRADING ORDINANCE. (CDD-E) 32. SOILS REPORT. PLANS SHALL STRICTLY ADHERE TO THE SOILS REPORT. (CDD-E, -B) 33. ADA. DESIGN ALL SITE IMPROVEMENTS ACCORDING TO AMERICANS WITH DISABILITIES ACT (ADA) REQUIREMENTS. THE PROJECT SHALL PROVIDE ACCESSIBLE PATHS, CURB RAMPS AND/OR CROSSWALKS, AS NECESSARY, TO INTERCONNECT THE SITE, INCLUDING THE PEDESTRIAN PATHS TO THE ROW-STYLE TOWNHOUSE UNITS. (CDD-B) 34. SOLID WASTE SERVICE PLAN. SOLID WASTE GENERATED DURING THE CONSTRUCTION OF THIS PROJECT SHALL BE SERVICED BY THE CITY OF WATSONVILLE SOLID WASTE DIVISION. APPLICANT SHALL SUBMIT A SOLID WASTE SERVICE PLAN PRIOR TO APPROVAL OF THE FINAL MAP AND IMPROVEMENT PLANS SO THAT CITY STAFF MAY DETERMINE WHAT SERVICES WILL BE REQUIRED DURING CONSTRUCTION. (CDD-E, PW) 35. ENGINEERING TESTING & INSPECTION AGREEMENT. PRIOR TO PERMIT ISSUANCE, APPLICANT SHALL EXECUTE AN ENGINEERING TESTING AND INSPECTION AGREEMENT AND SUBMIT IT TO THE CITY FOR APPROVAL. APPLICANT SHALL HIRE A TESTING FIRM TO PERFORM ENGINEERING TESTING AND INSPECTION, SUCH AS SOILS AND CONCRETE TESTING AND INSPECTION. THE APPLICANT MAY HIRE ONLY THOSE TESTING FIRMS THAT ARE LISTED ON THE SPECIAL INSPECTION AGENCY RECOGNITION LIST. THE TESTING AND INSPECTION SHALL BE DONE AT THE DIRECTION OF THE CITY INSPECTOR. THE FIRM SHALL REPORT NONCONFORMING ITEMS TO THE CITY INSPECTOR AND FURNISH DAILY, WEEKLY AND FINAL REPORTS AS OUTLINED IN THE AGREEMENT AND DIRECTED BY THE CITY INSPECTOR. (CDD-E, -B) 36. UNDERGROUND UTILITIES. INSTALL ALL UTILITY LINES AND FACILITIES FOR POWER AND COMMUNICATIONS UNDERGROUND WITHIN OR ADJACENT TO THE DEVELOPMENT. NO OVERHEAD SERVICES TO THE PROPERTY OR OVERHEAD EXTENSIONS OF MAIN LINES SHALL BE PERMITTED. SERVICE PLANS SHALL BE APPROVED BY THE RESPECTIVE UTILITY COMPANY AND THE CITY PRIOR TO THE RECORDATION OF THE FINAL MAP. (CDD-E, PW) 37. STORM DRAIN SYSTEMS/HYDRAULICS. THE PROJECT APPLICANT SHALL HAVE PREPARED CALCULATIONS DEMONSTRATING THE HYDRAULIC ADEQUACY OF NEW STORM DRAINS AND OPEN CHANNELS PROPOSED FOR A DEVELOPMENT. THE HYDRAULIC STUDY FOR STORM DRAIN SYSTEMS SHALL EVALUATE THE HYDRAULIC CAPACITY OF PROPOSED DRAINS AND EXISTING RECEIVING DRAINS TO LIMIT DOWNSTREAM, WHERE APPLICABLE, AS REQUIRED BY THE CITY STAFF. (CDD- PW) 38. STORMWATER CONTROL PLAN. THE APPLICANT SHALL SUBMIT A REVISED/UPDATED STORMWATER CONTROL PLAN (SWCP) THAT ADDRESSES THE BELOW COMMENTS AND REFLECTS THE CHANGE IN STORMWATER REQUIREMENTS BASED ON THE CHANGE IN DESIGN CONCEPT. PLEASE EXPLAIN IF ANY OF THE ABOVE COMMENTS NO LONGER APPLY TO THE PROJECT. PLEASE SHOW ALL OF THE DRAINAGE MANAGEMENT AREAS (DMA'S), THE DECENTRALIZED APPROACH TO STORMWATER MANAGEMENT AND REVISED CALCULATIONS. BELOW IS A SUMMARY OF COMMENTS MADE REGARDING THE STORMWATER COMPLIANCE OF THIS PROJECT BEGINNING IN 2017. PLEASE NOTE THAT SOME OF THESE COMMENTS MAY NO LONGER BE RELEVANT: A. SITE IS ADJACENT TO WATSONVILLE SLOUGH AND ALL EROSION AND SEDIMENT CONTROL MEASURE NEED TO BE CAREFULLY FOLLOWED TO ENSURE THAT THE SLOUGH IS NOT IMPACTED DURING GRADING AND CONSTRUCTION. B. PRELIMINARY STORMWATER CONTROL PLAN: TO COMPLY WITH THE LOW IMPACT DEVELOPMENT STRATEGIES, IMPROVE STORMWATER QUALITY, AND MIMIC PRE- HYDROLOGIC IMPACT AS REQUIRED BY THE CITY POST-CONSTRUCTION STANDARDS, THE PROJECT SHALL INCORPORATE THE FOLLOWING ITEMS INTO THE DESIGN: 1. SHOW THE LOCATIONS ON THE PLAN OF THE LOW-LYING VEGETATED AREAS RECEIVING RUNOFF FROM IMPERVIOUS SURFACES AS DESCRIBED ON PAGE 6 OF THE PRELIMINARY STORMWATER CONTROL PLAN. 2. DESCRIBE HOW THE 4% METHOD MEETS THE TIER 2 TREATMENT REQUIREMENTS IN RETAINING THE 85TH PERCENTILE 24-HR STORM EVENT OR WITH BIOFILTRATION IN TREATING RUNOFF PRODUCED FROM A RAIN INTENSITY OF AT LEAST 0.2 IN/HR. 3. UNDER THE PCR PERFORMANCE REQUIREMENT NO. 3, PAGE PCR-9, SECTION V) (1), THE APPLICANT IS REQUIRED BY THE CITY TO USE STRUCTURAL STORMWATER CONTROL MEASURES THAT OPTIMIZE RETENTION AND RESULT IN OPTIMAL PROTECTION AND RESTORATION OF WATERSHED PROCESSES, SUCH AS STRUCTURAL CONTROL MEASURES ASSOCIATED WITH SMALL SCALE, DECENTRALIZED FACILITIES DESIGN TO INFILTRATE, EVAPOTRANSPIRATE, FILTER, OR CAPTURE AND USE STORMWATER. THE CITY STAFF RECOGNIZED THE CONSTRAINTS AND DIFFICULTIES TO PROVIDE DECENTRALIZED FACILITIES UPSTREAM AT THIS PARTICULAR PROJECT. HOWEVER, TO BEST MIMIC THE PRE-EXISTING HYDROLOGIC PROCESSES, THE CITY STAFF RECOMMENDS THE FOLLOWING ITEMS TO INCORPORATE INTO THE DESIGN: I. USE PERMEABLE PAVERS FOR THE DRIVEWAYS FROM ON SOME LOTS TO REDUCE IMPERVIOUS AREA FOOTPRINT, REDUCE HYDROLOGIC IMPACTS, AND OFFSET FOR THE CENTRALIZED TREATMENT AND RETENTION FACILITY. 4. DUE TO THE LARGE BIORETENTION FOOTPRINT, THE APPLICANT SHALL PROVIDE A SITE- SPECIFIC SOIL ASSESSMENT TO DETERMINE THE NATIVE SOIL SATURATED HYDRAULIC CONDUCTIVITY. BASED ON THE SOIL ASSESSMENT THE APPLICANT SHALL EVALUATE THE DESIGN TO RETAIN THE 95TH PERCENTILE 24-HR RAINFALL EVENT OR APPLY FOR TECHNICAL INFEASIBILITY. BIORETENTION AREA FOOTPRINT SHALL BE KEPT TO THE REQUIRED MINIMUM. C. DESCRIBE AND PROVIDE A CONCEPTUAL DESIGN FOR STORMWATER MITIGATION FOR LOMA VISTA DRIVE EXTENSION. THE MITIGATION MAY BE PROVIDED ON OR OFF-SITE. D. STORM DRAINAGE 1. PROVIDE A REDUNDANT OVERFLOW INLET STRUCTURE FOR EACH OUTFALL. 2. RECONFIGURE AND ADD AT LEAST TWO MORE DRAINAGE OUTFALLS WITH ENERGY DISSIPATORS INTO THE BIORETENTION TO SPREAD OUT THE RUNOFF DISTRIBUTION AND REDUCE EROSION. MAINTAIN THE DRAINAGE DISTRIBUTION EQUALLY FOR EACH OUTFALL TO THE MAXIMUM PRACTICAL EXTENT FEASIBLE. E. SWCP & DRAINAGE STUDY 1. EACH DRAINAGE TRIBUTARY AREA FOR EACH OUTFALL SHALL BE THE DELINEATION AS THE DRAINAGE MANAGEMENT AREA (DMA) FROM WHICH THE BIORETENTION FACILITY SHALL BE SIZED FOR TREATMENT, RETENTION, AND PEAK MANAGEMENT.
A BIORETENTION BASIN SHALL BE DESIGNED FOR EACH OUTFALL; A SINGLE DMA IS NOT ACCEPTABLE. 2. EACH BIORETENTION SHALL HAVE ONE CONTROL STRUCTURE WITH A REDUNDANT OVERFLOW. THE OVERFLOW STRUCTURE SHALL CONNECT DIRECTLY TO THE OUTFALL STORM DRAIN PIPE. F. DEFER TO BUILDING PERMIT STAGE, PROVIDE THE FOLLOWING: 1. THE PRE AND POST-DEVELOPMENT RUNOFF RATES SHALL BE COMPUTED FOR EACH STORMWATER OUTFALL DISCHARGING INTO THE BIORETENTION. THE DRAINAGE CALCULATIONS FOR THE TRIBUTARY DRAINAGE AREAS SHALL INCLUDE BOTH THE PERVIOUS AND IMPERVIOUS SURFACES. 2. REVISE THE ORIFICE CONTROL SIZING CALCULATIONS TO RELEASE THE PREDEVELOPMENT FLOWRATES FOR THE TRIBUTARY DRAINAGE AREA; IT APPEARS THAT THE PREDEVELOPMENT FLOW RATES CAME FROM THE DETENTION VOLUME SIZING CALCULATIONS WHICH ONLY ACCOUNT FOR THE PERVIOUS AREAS TO BE REPLACED WITH IMPERVIOUS. 3. PERFORM A HYDRAULIC ANALYSIS AND SIZE THE DRAINAGE PIPE SYSTEM TO CONVEY THE 25- YEAR STORM EVENT. 4. DEMONSTRATE THAT THE OVERFLOW CONTROL STRUCTURE CAN CONVEY THE 25-YEAR STORM EVENT THROUGH THE TRASH GRATE. 5. PROVIDE THE DRAINAGE AND HYDRAULIC ANALYSIS AS AN APPENDIX TO THE SWCP. (CDD-E, PW) 39. DESIGN-LEVEL GEOTECHNICAL INVESTIGATION AND FINAL GRADING PLAN (MM GEO-2). PRIOR TO ISSUANCE OF
A GRADING PERMIT FOR THE PROJECT,
A DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL BE CONDUCTED AND MUST SHOW THAT SLOPES AND RETAINING WALLS ON THE PROJECT SITE WOULD BE STABLE UNDER BOTH STATIC AND SEISMIC CONDITIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL BE PREPARED BY A REGISTERED PROFESSIONAL GEOTECHNICAL ENGINEER AND SHALL PROVIDE SLOPE STABILITY ANALYSES BASED ON THE FINAL PROJECT DESIGN AND SHALL INCLUDE ADEQUATE FACTORS OF SAFETY FOR BOTH STATIC AND SEISMIC CONDITIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL EVALUATE THE FINAL GRADING PLAN FOR THE PROJECT AS WELL AS FINAL DESIGN PLANS FOR ONSITE STRUCTURES AND FOUNDATIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL RECOMMEND SLOPE STABILIZATION MEASURES, AS NECESSARY, TO ENSURE THAT SOILS ON THE PROJECT SITE REMAIN STABLE FOLLOWING GRADING AND CONSTRUCTION OF ONSITE STRUCTURES UNDER BOTH STATIC AND SEISMIC CONDITIONS. THESE MEASURES SHALL BE INCORPORATED INTO THE FINAL GRADING PLANS TO ENSURE SLOPES ARE STABLE UNDER THE CONDITIONS ANALYZED IN THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION. SLOPE STABILIZATION MEASURES MAY INCLUDE, BUT ARE NOT LIMITED TO: DECREASING THE INCLINATION OR HEIGHT OF THE GRADED SLOPE, BACKFILLING WITH LIGHTWEIGHT MATERIAL, INSTALLING PLASTIC MESH REINFORCEMENTS OR ROCK-FILLED BUTTRESSES, INSTALLING DRAIN PIPES OR OTHER DRAINAGE SYSTEMS, INSTALLING RETAINING WALLS, OR INSTALLING ANCHORS, BOLTS, OR MICRO-PILES, OR CHEMICALLY TREATING THE SOIL TO STABILIZE THE SLOPE. (CDD-B, -E, PW) 40. GEOTECHNICAL EVALUATION RECOMMENDATIONS. THE PROJECT DESIGN SHALL ADHERE TO THE SPECIFIC RECOMMENDATIONS AND CRITERIA IN THE GEOTECHNICAL EVALUATION PREPARED BY MILLER PACIFIC ENGINEERING GROUP FOR THE PROJECT (PREPARED MARCH 4, 2021; REVISED JANUARY 20, 2022). (CDD-E) PRIOR TO RECORDATION OF THE FINAL MAP, THE FOLLOWING REQUIREMENTS SHALL BE SATISFIED: 41. PROVIDE
A FINAL MAP PREPARED BY OR UNDER THE DIRECTION OF
A LICENSED LAND SURVEYOR OR REGISTERED CIVIL ENGINEER, PREPARED IN ACCORDANCE WITH THE SUBDIVISION MAP ACT. SUBMIT FOUR (4) COPIES OF THE FINAL MAP, ONE 8-1/2" X 11" COPY OF THE SITE PLAN, TWO COPIES OF PROPERTY BOUNDARY CLOSURE CALCULATIONS AND ONE COPY OF A RECENT TITLE REPORT. (CDD-E) PRIOR TO AND/OR CONCURRENT WITH ISSUANCE OF PERMITS FOR GRADING AND/OR BUILDING, THE FOLLOWING REQUIREMENTS SHALL BE SATISFIED: 42. WORKER ENVIRONMENTAL AWARENESS PROGRAM TRAINING (MM CR-2A). BEFORE INITIATION OF GROUND-DISTURBING ACTIVITY, WORKER ENVIRONMENTAL AWARENESS PROGRAM TRAINING SHALL BE ADMINISTERED BY A QUALIFIED PALEONTOLOGIST, AS DEFINED BY SOCIETY OF VERTEBRATE PALEONTOLOGY (SVP), OR HIS OR HER DESIGNATED REPRESENTATIVE. THE TRAINING SHALL INCLUDE A BRIEF OVERVIEW OF THE SIGNIFICANCE AND LEGAL PROTECTION OF PALEONTOLOGICAL RESOURCES AS WELL AS INFORMATION REGARDING THE TYPES OF FOSSIL RESOURCES THAT WORKERS MIGHT ENCOUNTER DURING CONSTRUCTION.
A COPY OF THE TRAINING PROGRAM IN THE FORM OF HANDOUTS SHALL BE LEFT WITH CONSTRUCTION MANAGERS TO DISTRIBUTE TO NEW PERSONNEL THAT JOIN THE PROJECT CONSTRUCTION CREW AFTER THE WORKER ENVIRONMENTAL AWARENESS PROGRAM TRAINING HAS BEEN ADMINISTERED. (CDD-B, -E, PW) 43. PRE-CONSTRUCTION CALIFORNIA RED-LEGGED FROG SURVEYS (MM BIO-2K). WITHIN TWO WEEKS OF THE INITIATION OF CONSTRUCTION ACTIVITIES, INCLUDING MOBILIZATION AND STAGING,
A BIOLOGIST APPROVED BY THE USFWS AND CDFW SHALL CONDUCT A SURVEY OF THE CONSTRUCTION AREA FOR ALL LIFE STAGES OF CALIFORNIA RED-LEGGED FROG. ALL AREAS WHERE THIS SPECIES OCCURS SHALL BE AVOIDED UNTIL THE APPROVED BIOLOGIST HAS DETERMINED THAT THIS SPECIES IS NO LONGER PRESENT. NO LIFE STAGES OF THIS SPECIES SHALL BE RELOCATED WITHOUT EITHER
A USFWS-APPROVED BIOLOGICAL OPINION OR
A TAKE AUTHORIZATION FROM THE USFWS AND/OR CDFW. IF RELOCATION IS AUTHORIZED, THE SPECIES SHALL BE TAKEN TO THE RELOCATION SITE DETERMINED BY MITIGATION MEASURE MM BIO-2B PRIOR TO INITIATION OF CONSTRUCTION ACTIVITIES. (CDD-B, -E, PW) 44. EXCLUSION FENCE (MM BIO-2D). PRIOR TO PROJECT CONSTRUCTION, SILT FENCING OR WILDLIFE EXCLUSION FENCING SHALL BE USED TO PREVENT CALIFORNIA RED-LEGGED FROGS AND WESTERN POND TURTLES FROM ENTERING WORK AREAS. THIS FENCING SHALL BE INSTALLED ALONG THE BOUNDARY OF THE PROJECT FOOTPRINT EXCEPT WHERE THIS FOOTPRINT EXTENDS INTO RIPARIAN AND MARSH HABITATS IN WATSONVILLE SLOUGH. IN RIPARIAN AND MARSH HABITAT AREAS, THE FENCING SHALL BE INSTALLED ALONG THE BOUNDARY BETWEEN RIPARIAN AND DEVELOPED HABITATS. IF EQUIPMENT NEEDS TO PASS THROUGH THIS FENCING FOR WORK ACTIVITIES, A GATE SHALL BE INSTALLED TO ALLOW ACCESS AND THE FENCE SHALL BE SEALED AT THE END OF EACH WORKING DAY. THE EXCLUSION FENCING SHALL BE AT LEAST THREE FEET HIGH AND THE LOWER SIX INCHES OF THE FENCE SHALL BE BURIED IN THE GROUND TO PREVENT ANIMALS FROM CRAWLING UNDER. THE REMAINING 2.5 FEET SHALL BE LEFT ABOVE GROUND TO SERVE AS A BARRIER FOR ANIMALS MOVING ON THE GROUND SURFACE. THE FENCE SHALL BE PULLED TAUT AT EACH SUPPORT TO PREVENT FOLDS OR SNAGS. FENCING SHALL BE INSTALLED AND MAINTAINED IN GOOD CONDITION DURING ALL CONSTRUCTION ACTIVITIES. SUCH FENCING SHALL BE INSPECTED AND MAINTAINED DAILY UNTIL THE COMPLETION OF EACH PROJECT PHASE. THE FENCING SHALL REMAIN UNTIL THE RETAINING WALL IS INSTALLED AND ALL CONSTRUCTION EQUIPMENT IS REMOVED FROM THE AREA BETWEEN THIS WALL AND THE EXCLUSION FENCE. (CDD-B, -E, PW) 45. WORKER ENVIRONMENTAL AWARENESS PROGRAM (MM BIO-2A). PRIOR TO ANY GROUND DISTURBING ACTIVITIES,
A BIOLOGIST APPROVED BY THE USFWS AND CDFW SHALL CONDUCT A TRAINING SESSION FOR ALL CONSTRUCTION PERSONNEL. AT
A MINIMUM, THE TRAINING SHALL INCLUDE
A DESCRIPTION OF THE CALIFORNIA RED-LEGGED FROG AND WESTERN POND TURTLE, THEIR HABITAT, THE IMPORTANCE OF THE SPECIES, THE MEASURES THAT ARE BEING IMPLEMENTED TO AVOID AND MINIMIZE IMPACTS AS THEY RELATE TO THE PROJECT, AND THE BOUNDARIES WITHIN WHICH THE WORK MAY BE ACCOMPLISHED. (CDD-B, -E, PW) 46. DETERMINATION OF APPROPRIATE RELOCATION SITE(S) (MM BIO-2B). PRIOR TO THE INITIATION OF MITIGATION MEASURES MM BIO-2C THROUGH BIO-2I, A QUALIFIED BIOLOGIST SHALL DETERMINE, IN CONSULTATION WITH THE USFWS, APPROPRIATE RELOCATION SITES FOR ANY CALIFORNIA RED-LEGGED FROGS AND WESTERN POND TURTLES WITHIN THE SAME WATERSHED/STREAM COURSE THAT MAY BE OBSERVED DURING THE PRE-ACTIVITY SURVEY DESCRIBED BELOW AND THAT NEED TO BE RELOCATED. (CDD-B, -E, PW) 47. PRE-ACTIVITY WESTERN POND TURTLE SURVEY (MM BIO-2C).
A QUALIFIED BIOLOGIST SHALL SURVEY THE PROJECT SITE WITHIN 48 HOURS OF INITIAL GROUND-DISTURBING ACTIVITIES FOR WESTERN POND TURTLES. IF WESTERN POND TURTLES ARE FOUND THE APPROVED BIOLOGIST SHALL RELOCATE THE INDIVIDUALS TO THE APPROPRIATE RELOCATION SITE, DETERMINED AS PART OF MITIGATION MEASURE MM BIO-2B, OUTSIDE OF THE WORK AREA. ONLY THE USFWS/CDFW-APPROVED BIOLOGISTS SHALL PARTICIPATE IN ACTIVITIES ASSOCIATED WITH THE CAPTURE AND HANDLING OF WESTERN POND TURTLES. (CDD-B, -E, PW) DRAWN BY:
BY DATE DESCRIPTION
REVISION BLOCK DESIGNED BY: DATE: SCALE: PROJECT NO: SHEET: GSDMR 08/12/2021 AS NOTED 20-021 NUMBER CIVIL ENGINEERING LAND PLANNING PROJECT MANAGEMENT CONSTRUCTION SUPPORT QSD AND QSP SERIVCES 2905 KRISTIE COURT SANTA CRUZ, CA 95065 TEL (831) 462-2905 www.ramseycivilengineering.com DAVID RAMSEY DATE RCE# 73735 APN# 018-372-14 PLAN TYPE
HILLCREST SUBDIVISION
511 OHLONE PARKWAY, WATSONVILLE, CA, 95076
DAV I D RAMS E Y NO. C73735
R GE I ST ERED
PROFESS IONAL
ENGI NEER
S TAT E
OF CAL I FORNIA
CIVI L RESIDENTIAL SUBDIVISION
GS/DMR 09/29/2021 RESPONSE 1 - PLAN CHECK COMMENTS 09/21/2021 GS/DMR 01/20/2022 RESPONSE 2 - PLAN CHECK COMMENTS 10/08/2021 B A
GS/DMR 03/18/2022 RESPONSE 3 - PLAN CHECK COMMENTS 03/11/2022 C C1.1
CONDITIONS OF APPROVAL
Exhibit B
48. PRE-DISTURBANCE SANTA CRUZ TARPLANT SURVEY AND MITIGATION PLANTING (MM BIO-1). PRIOR TO CONSTRUCTION OF THE PROJECT (EITHER “PHASE I OR II” AS DEFINED IN THE EIR),
A FOCUSED SURVEY FOR SANTA CRUZ TARPLANT SHALL BE CONDUCTED BY A QUALIFIED BIOLOGIST IN AREAS OF THE PROJECT SITE WHERE THE QUALIFIED BIOLOGIST IDENTIFIES SUITABLE HABITAT. THE SURVEY SHALL BE CONDUCTED IN ACCORDANCE WITH THE CDFW'S PROTOCOLS FOR SURVEYING AND EVALUATING IMPACTS TO SPECIAL STATUS NATIVE PLANT POPULATIONS AND SENSITIVE NATURAL COMMUNITIES, WHICH WAS PUBLISHED IN MARCH 2018. THE SURVEY SHALL BE CONDUCTED DURING THE SPECIES' BLOOMING PERIOD (MAY-NOVEMBER), AND FINDINGS OF THE SURVEY SHALL BE SUBMITTED TO THE CITY OF WATSONVILLE FOR REVIEW AND APPROVAL. IF A POPULATION OF SANTA CRUZ TARPLANT IS FOUND, MITIGATION FOR THE LOSS OF INDIVIDUALS SHALL BE CONDUCTED. MITIGATION SHALL BE ACHIEVED BY ESTABLISHING A NEW POPULATION OF SANTA CRUZ TARPLANT IN AN AREA APPROVED BY THE USFWS AND CDFW. THIS AREA SHALL NOT BE DEVELOPED AND SHALL CONTAIN SUITABLE HABITAT TYPES FOR ESTABLISHING A NEW POPULATION. MITIGATION SHALL BE
A 1:1 RATIO (IMPACT MITIGATION) OF PLANT ESTABLISHMENT ON AN ACREAGE BASIS, OR OTHER RATIO OR ALTERNATIVE MITIGATION AS DETERMINED NECESSARY BY CDFW. MONITORING OF THE NEW MITIGATION POPULATION SHALL OCCUR ANNUALLY. ANNUAL MONITORING SHALL INCLUDE QUANTITATIVE SAMPLING OF THE SANTA CRUZ TARPLANT POPULATION TO DETERMINE THE NUMBER OF PLANTS THAT HAVE GERMINATED AND SET SEED. THIS MONITORING SHALL CONTINUE ANNUALLY OR UNTIL SUCCESS CRITERIA HAVE BEEN MET; ONCE ANNUAL MONITORING HAS DOCUMENTED THAT A SELF-SUSTAINING POPULATION OF THIS ANNUAL SPECIES HAS BEEN SUCCESSFULLY ESTABLISHED ON SITE, THIS MITIGATION MEASURE SHALL BE DETERMINED TO HAVE BEEN MET AND THE PROJECT APPLICANT RELEASED FROM FURTHER RESPONSIBILITY. ESTABLISHMENT OF THE PLANT POPULATION SHALL BE SUBJECT TO A HABITAT MITIGATION AND MONITORING PLAN. TO ENSURE THE SUCCESS OF MITIGATION SITES REQUIRED FOR COMPENSATION OF PERMANENT IMPACTS ON SANTA CRUZ TARPLANT, THE PROJECT APPLICANT SHALL RETAIN
A QUALIFIED BIOLOGIST TO PREPARE
A HABITAT MITIGATION AND MONITORING PLAN. THE HABITAT MITIGATION AND MONITORING PLAN SHALL BE SUBMITTED TO THE CITY OF WATSONVILLE FOR REVIEW AND APPROVAL PRIOR TO THE START OF CONSTRUCTION. THE HABITAT MITIGATION AND MONITORING PLAN SHALL INCLUDE, AT A MINIMUM, THE FOLLOWING INFORMATION: · A SUMMARY OF HABITAT AND SPECIES IMPACTS AND THE PROPOSED MITIGATION FOR EACH ELEMENT · A DESCRIPTION OF THE LOCATION AND BOUNDARIES OF THE MITIGATION SITE(S) AND DESCRIPTION OF EXISTING SITE CONDITIONS· A DESCRIPTION OF ANY MEASURES TO BE UNDERTAKEN TO ENHANCE (E.G., THROUGH FOCUSED MANAGEMENT) THE MITIGATION SITE FOR SPECIAL-STATUS SPECIES· IDENTIFICATION OF AN ADEQUATE FUNDING MECHANISM FOR LONG-TERM MANAGEMENT· A DESCRIPTION OF MANAGEMENT AND MAINTENANCE MEASURES INTENDED TO MAINTAIN AND ENHANCE HABITAT FOR THE TARGET SPECIES (E.G., WEED CONTROL, FENCING MAINTENANCE) · A DESCRIPTION OF HABITAT AND SPECIES MONITORING MEASURES ON THE MITIGATION SITE, INCLUDING SPECIFIC, OBJECTIVE PERFORMANCE CRITERIA, MONITORING METHODS, DATA ANALYSIS, REPORTING REQUIREMENTS, MONITORING SCHEDULE, ETC. MONITORING WILL DOCUMENT COMPLIANCE WITH EACH ELEMENT REQUIRING HABITAT COMPENSATION OR MANAGEMENT. AT
A MINIMUM, PERFORMANCE CRITERIA WILL INCLUDE
A MINIMUM 1:1 MITIGATION RATIO FOR THE NUMBER OF PLANTS IN THE IMPACTED POPULATION (AT LEAST ONE PLANT PRESERVED FOR EACH PLANT IMPACTED). · A CONTINGENCY PLAN FOR MITIGATION ELEMENTS THAT DO NOT MEET PERFORMANCE OR FINAL SUCCESS CRITERIA WITHIN DESCRIBED PERIODS; THE PLAN WILL INCLUDE SPECIFIC TRIGGERS FOR REMEDIATION IF PERFORMANCE CRITERIA ARE NOT MET AND A DESCRIPTION OF THE PROCESS BY WHICH REMEDIATION OF PROBLEMS WITH THE MITIGATION SITE (E.G., PRESENCE OF NOXIOUS WEEDS) WILL OCCUR A REQUIREMENT THAT THE PROJECT PROPONENT WILL BE RESPONSIBLE FOR MONITORING, AS SPECIFIED IN THE HABITAT MITIGATION AND MONITORING PLAN, FOR AT LEAST THREE (3) YEARS POST-CONSTRUCTION; DURING THIS PERIOD, ANNUAL REPORTING WILL BE PROVIDED TO THE CITY'S SUPERVISING ENVIRONMENTAL PLANNER. AT THE REQUEST OF THE CDFW OR USFWS, THE ANNUAL REPORTING SHALL ALSO BE PROVIDED TO THESE AGENCIES. (CDD-B, -E, PW) DURING CONSTRUCTION, THE FOLLOWING CONDITIONS SHALL BE ADHERED TO: 49. NOISE. NOISE-GENERATING CONSTRUCTION EQUIPMENT, INCLUDING TRUCK TRAFFIC ARRIVING AND DEPARTING THE SITE, SHALL NOT OCCUR BETWEEN THE HOURS OF 7:00 P.M. AND 7:00 A.M., MONDAY THROUGH SATURDAY. NO BUILDING ACTIVITY WILL BE ALLOWED ON SUNDAYS OR HOLIDAYS. (CDD-B, PW) 50. NOISE ABATEMENT. ALL CONSTRUCTION EQUIPMENT POWERED BY INTERNAL COMBUSTION ENGINES SHALL BE PROPERLY MUFFLED AND MAINTAINED. ALL STATIONARY NOISE GENERATING CONSTRUCTION EQUIPMENT SUCH AS AIR COMPRESSORS SHALL BE LOCATED AS FAR AS PRACTICAL FROM THE EXISTING RESIDENCES. SUCH EQUIPMENT SHALL BE ACOUSTICALLY SHIELDED WHERE POSSIBLE. THE PRUDENT SELECTION OF EQUIPMENT ALONG WITH THE USE OF PROPER MUFFLERS SHOULD RESULT IN MAXIMUM CONSTRUCTION-RELATED NOISE GENERATED BY A PARTICULAR PIECE OF EQUIPMENT OF NO MORE THAN 85 DBA WHEN MEASURED AT A DISTANCE OF 50 FEET FROM THE PIECE OF EQUIPMENT OPERATING AT ITS NOISIEST MODE. (CDD-B, PW) 51. CONSTRUCTION NOISE REDUCTION TECHNIQUES (MM N-6). THE APPLICANT SHALL IMPLEMENT THE FOLLOWING CONSTRUCTION NOISE REDUCTION TECHNIQUES DURING CONSTRUCTION ACTIVITIES: A.DURING PROJECT CONSTRUCTION, ALL EQUIPMENT, FIXED OR MOBILE, SHALL BE OPERATED WITH CLOSED ENGINE DOORS AND SHALL BE EQUIPPED WITH PROPERLY OPERATING AND MAINTAINED MUFFLERS CONSISTENT WITH MANUFACTURERS' STANDARDS. B. THE CONTRACTOR SHALL PROVIDE STAGING AREAS ONSITE TO MINIMIZE OFF-SITE TRANSPORTATION OF HEAVY CONSTRUCTION EQUIPMENT. THESE AREAS SHALL BE LOCATED TO MAXIMIZE THE DISTANCE BETWEEN ACTIVITY AND SENSITIVE RECEPTORS. THIS WOULD REDUCE NOISE LEVELS ASSOCIATED WITH MOST TYPES OF IDLING CONSTRUCTION EQUIPMENT. C.
A TEMPORARY SOUND ATTENUATION BARRIER SHALL BE ERECTED ALONG THE NORTH, SOUTH, AND WEST EDGE OF THE PROJECT SITE IMMEDIATELY SUBSEQUENT TO THE COMPLETION OF THE GRADING ACTIVITIES ALONG THE WESTERLY EDGE OF THE PROJECT SITE. THIS BARRIER MUST BREAK THE LINE OF SIGHT BETWEEN CONSTRUCTION AREAS AND THE GROUND FLOOR LEVEL OF ADJACENT RESIDENCES TO THE WEST AND SHALL BE DESIGNED TO ACHIEVE THE MAXIMUM SOUND ATTENUATION FEASIBLE. BARRIER DESIGN AND ITS ACOUSTIC PROPERTIES SHALL BE BASED ON A SITE-SPECIFIC ACOUSTIC ANALYSIS PREPARED BY A QUALIFIED ACOUSTIC ENGINEER PRIOR TO ISSUANCE OF GRADING OR CONSTRUCTION PERMITS. D.DURING PROJECT CONSTRUCTION, ALL UNNECESSARY IDLING OF EQUIPMENT WITH INTERNAL COMBUSTION ENGINES SHALL BE PROHIBITED. E.HEAVY CONSTRUCTION ACTIVITY SHALL BE LIMITED TO WEEKDAYS BETWEEN 9:00 AM AND 5:00 PM AND SATURDAYS BETWEEN 9:00 AM AND 4:00 PM, WITH NO CONSTRUCTION ON SUNDAYS OR HOLIDAY. THIS MEASURE IS APPLICABLE THROUGH THE DURATION OF ALL GRADING ACTIVITIES. F. THE PROJECT APPLICANT SHALL DESIGNATE A "DISTURBANCE COORDINATOR" WHO WOULD BE RESPONSIBLE FOR RESPONDING TO ANY COMPLAINTS ABOUT CONSTRUCTION NOISE. THE DISTURBANCE COORDINATOR SHALL BE RESPONSIBLE FOR DETERMINING THE CAUSE OF THE NOISE COMPLAINT (E.G., BAD MUFFLER, ETC.) AND SHALL REQUIRE THAT REASONABLE MEASURES BE IMPLEMENTED TO CORRECT THE PROBLEM TO THE SATISFACTION OF THE COMMUNITY DEVELOPMENT DIRECTOR. G.THE PROJECT APPLICANT AND/OR CONSTRUCTION CONTRACTOR(S) MUST USE THE NEWEST AVAILABLE POWER CONSTRUCTION EQUIPMENT WITH STANDARD RECOMMENDED NOISE SHIELDING AND MUFFLING DEVICES.(CDD-B, PW) 52. NOISE COMPLIANT NOTICE. REQUIRE POSTING OF SIGNS ON THE PROPERTY THAT INFORMS RESIDENTS OF THE NAME AND PHONE NUMBER OF THE PERSON DESIGNATED BY THE APPLICANT TO ADDRESS NOISE COMPLAINTS ARISING FROM PROJECT CONSTRUCTION. THIS “DISTURBANCE COORDINATOR” SHALL BE REQUIRED TO INVESTIGATE CITIZEN COMPLAINTS WITHIN 24 HOURS OF RECEIVING THE COMPLAINT AND CONTACT THE CONCERNED PARTY TO EXPLAIN HOW THE PROBLEM HAS BEEN ADDRESSED WITHIN 48 HOURS OF THE COMPLAINT. (CDD-E) 53. WORK HOURS. NO WORK SHALL BE PERFORMED WITHIN THE HOURS OF 7 P.M. TO
7 A.M. MONDAY THROUGH FRIDAY, NOR PRIOR TO
8 A.M. OR AFTER
5 P.M. ON SATURDAY. NO WORK SHALL OCCUR ON SUNDAYS OR HOLIDAYS.
A SIGN SHALL BE POSTED AT
A CONSPICUOUS LOCATION NEAR THE MAIN ENTRY TO THE SITE, PROMINENTLY DISPLAYING THESE HOUR RESTRICTIONS AND IDENTIFYING THE PHONE # OF THE JOB SUPERINTENDENT. (CDD-B) 54. GRADING AREA. LIMITS OF GRADING SHALL BE STAKED OR FLAGGED IN THE FIELD. (CDD-B, - E, PW) 55. PREVENTION OF ENTRAPMENT (MM BIO-2E). TO PREVENT THE INADVERTENT ENTRAPMENT OF INDIVIDUALS, ALL EXCAVATED, STEEP-WALLED HOLES OR TRENCHES SHALL BE COVERED AT THE END OF EACH WORKDAY WITH PLYWOOD OR SIMILAR MATERIALS. IF THIS IS NOT POSSIBLE, ONE OR MORE ESCAPE RAMPS CONSTRUCTED OF EARTH FILL OR WOODEN PLANKS SHALL BE ESTABLISHED IN THE HOLE. BEFORE SUCH HOLES OR TRENCHES ARE FILLED, THEY SHALL BE THOROUGHLY INSPECTED FOR ANY ANIMALS. IF AT ANY TIME A CALIFORNIA RED-LEGGED FROG IS FOUND TRAPPED OR INJURED IN THESE HOLES, THE INDIVIDUAL SHALL BE RELOCATED TO THE PRE- APPROVED RELOCATION SITE(S) IDENTIFIED AS PART OF MITIGATION MEASURE MM BIO-2B BY AN APPROVED BIOLOGIST. (CDD-B, -E, PW) 56. DELINEATION OF WORK AREA (MM BIO-2F). THE BOUNDARIES OF THE WORK AREA SHALL BE CLEARLY DELINEATED WITH ENVIRONMENTALLY SENSITIVE AREA FENCING (ORANGE-COLORED, PLASTIC CONSTRUCTION FENCING), TO PREVENT WORKERS OR EQUIPMENT FROM INADVERTENTLY STRAYING FROM THE WORK AREA. ALL CONSTRUCTION PERSONNEL, EQUIPMENT, AND VEHICLE MOVEMENT SHALL BE CONFINED TO DESIGNATED CONSTRUCTION AND STAGING AREAS. STAGING AREAS ARE RESTRICTED TO AREAS DELINEATED IN THE PROJECT PLANS AND ENCOMPASSED BY THE ENVIRONMENTALLY SENSITIVE AREA FENCING. (CDD-B, -E, PW) 57. FOOD TRASH REMOVAL (MM BIO-2G). ALL FOOD TRASH FROM PROJECT PERSONNEL SHALL BE PLACED IN CONTAINERS WITH SECURE LIDS BEFORE THE END OF WORK EACH DAY IN ORDER TO REDUCE THE LIKELIHOOD OF ATTRACTING PREDATORS TO THE PROJECT SITE. IF CONTAINERS MEETING THESE CRITERIA ARE NOT AVAILABLE, ALL RUBBISH SHALL BE REMOVED FROM THE PROJECT SITE AT THE END OF EACH WORK DAY. (CDD-B, -E, PW) 58. BIOLOGICAL MONITORING (MM BIO-2H).
A BIOLOGIST APPROVED BY THE USFWS AND CDFW SHALL REMAIN ONSITE AT ALL TIMES DURING PROJECT ACTIVITIES THAT OCCUR WITHIN MAPPED RIPARIAN RUDERAL GRASSLAND, RIPARIAN ORNAMENTAL WOODLAND, AND PERENNIAL FRESHWATER MARSH HABITATS. PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES EACH DAY, THE CDFW/USFWS-APPROVED BIOLOGIST SHALL SURVEY THE PROJECT SITE TO ENSURE NO SPECIAL-STATUS SPECIES ARE WITHIN THE WORK AREA. AT ALL TIMES BIOLOGICAL MONITORS SHALL BE LOCATED ON THE PROJECT SITE SO THAT EACH AREA OF WORK CAN BE OBSERVED TO AVOID TAKE OF SPECIAL-STATUS SPECIES. ANY CALIFORNIA RED-LEGGED FROGS FOUND IN AREAS WHERE THEY COULD BE IMPACTED BY WORK ACTIVITIES SHALL BE RELOCATED TO THE PRE- APPROVED RELOCATION SITE(S) IDENTIFIED BY MITIGATION MEASURE MM BIO-2B. IF ANY CALIFORNIA RED-LEGGED FROGS ARE KILLED OR INJURED DURING WORK ACTIVITIES, THE USFWS SHALL BE CONTACTED WITHIN 24 HOURS. THE CDFW/USFWS-APPROVED BIOLOGIST SHALL HAVE THE AUTHORITY TO HALT ANY ACTION THAT MAY RESULT IN THE TAKE OF SPECIAL-STATUS SPECIES. (CDD-B, -E, PW) 59. WORK WINDOW (MM BIO-2I). PROJECT INITIAL SITE GRADING, SURFACE TRASH AND FENCE REMOVAL, TREE PRUNING, OUTFALL CONSTRUCTION, AND SOIL REMEDIATION ACTIVITIES SHALL BE RESTRICTED TO THE DRY SEASON (I.E., APRIL 15 THROUGH OCTOBER 15), AND NO VEGETATION REMOVAL OR PROJECT WORK IN MAPPED RIPARIAN OR PERENNIAL FRESHWATER MARSH HABITATS SHALL OCCUR DURING OR WITHIN 24 HOURS FOLLOWING A MEASURABLE RAINFALL EVENT. (CDD- B, -E, PW) 60. DOCUMENTATION AND REPORTING (MM BIO-2J). IF FEDERALLY AND/OR STATE PROTECTED SPECIES ARE HARMED, A BIOLOGIST APPROVED BY THE USFWS AND CDFW SHALL DOCUMENT THE CIRCUMSTANCES THAT LED TO HARM AND SHALL DETERMINE IF PROJECT ACTIVITIES SHOULD CEASE OR BE ALTERED IN AN EFFORT TO AVOID ADDITIONAL HARM TO THESE SPECIES. DEAD OR INJURED SPECIAL STATUS-SPECIES SHALL BE DISPOSED OF AT THE DISCRETION OF THE CDFW AND USFWS. ALL INCIDENCES OF HARM SHALL BE REPORTED TO THE CDFW AND USFWS WITHIN 48 HOURS. (CDD-B, -E, PW) 61. CALIFORNIA RED-LEGGED FROG HABITAT AVOIDANCE AND MINIMIZATION (MM BIO- 2L). IF CALIFORNIA RED-LEGGED FROGS ARE DETECTED IN THE VICINITY OF THE PROJECT SITE, A BIOLOGIST APPROVED BY THE USFWS AND CDFW SHALL BE PRESENT ONSITE DURING ALL GROUND DISTURBING ACTIVITIES, INCLUDING VEGETATION REMOVAL, GRADING, AND EXCLUSION FENCE INSTALLATION AND REMOVAL. ONCE THESE ACTIVITIES HAVE BEEN COMPLETED, THE APPROVED BIOLOGIST SHALL CONDUCT PERIODIC INSPECTIONS OF THE WORK SITE OF NOT LESS THAN ONCE PER WEEK WHEN CONSTRUCTION ACTIVITIES ARE OCCURRING IN/ADJACENT TO SUITABLE HABITAT. ADDITIONAL SITE VISITS SHOULD OCCUR DURING RAIN EVENTS WHEN SPECIAL- STATUS AMPHIBIANS ARE LIKELY TO BE MOBILE TO ENSURE THAT THEY ARE NOT ENTERING WORK AREAS. WORK ACTIVITIES IN OR ADJACENT TO SUITABLE HABITAT SHALL BE COMPLETED BETWEEN APRIL 15 AND OCTOBER 15 TO THE GREATEST EXTENT FEASIBLE. ALL VEHICLE MAINTENANCE/FUELING/STAGING SHALL OCCUR NO LESS THAN 100 FEET FROM ANY RIPARIAN HABITAT OR WATER BODY. SUITABLE CONTAINMENT PROCEDURES SHALL BE IMPLEMENTED TO PREVENT SPILLS.
A MINIMUM OF ONE SPILL KIT SHALL BE AVAILABLE AT EACH WORK LOCATION NEAR RIPARIAN HABITAT OR WATER BODIES. THE CDFW/USFWS-APPROVED BIOLOGIST SHALL REMOVE INVASIVE AQUATIC SPECIES SUCH AS BULLFROGS AND CRAYFISH FROM SUITABLE AQUATIC HABITAT WHENEVER OBSERVED AND SHALL DISPATCH THEM IN A HUMANE MANNER AND DISPOSE OF PROPERLY. (CDD-B, - E, PW) 62. ONSITE RIPARIAN ENHANCEMENT (MM BIO-2M). THE PROJECT APPLICANT SHALL COMPENSATE FOR PROJECT IMPACTS ON BREEDING AND FORAGING HABITAT FOR CALIFORNIA RED- LEGGED FROGS BY RESTORING HIGH QUALITY, NATURAL/HISTORICAL FUNCTIONS TO THE LOW-QUALITY, DEGRADED RIPARIAN HABITAT AND PERENNIAL FRESHWATER MARSH HABITAT WITHIN THE PROJECT SITE, AS DESCRIBED IN THE SUNSHINE VISTA DEVELOPMENT PROJECT MITIGATION AND MONITORING PLAN (MMP) PREPARED BY H.T. HARVEY & ASSOCIATES (APPENDIX
G TO THE DRAFT EIR FOR THE PROJECT). THE PROPOSED MITIGATION SHALL BE COMMENSURATE WITH THE AMOUNT AND TYPE OF IMPACT ARISING FROM THE PHASED DEVELOPMENT OF THE PROJECT, AND SHALL PROVIDE HABITAT FOR THE CALIFORNIA RED-LEGGED FROG OF GREATER VALUE THAN THE HABITAT BEING AFFECTED ON THE PROJECT SITE. THE PROJECT APPLICANT SHALL USE A COMBINATION OF NONNATIVE EUCALYPTUS REMOVAL, SELECTIVE INVASIVE PLANT CONTROL, AND ARROYO WILLOW REVEGETATION TO RESTORE NATIVE WILLOW THICKET HABITAT ALONG WATSONVILLE SLOUGH, AS DESCRIBED IN THE MMP. BOTH TEMPORARY AND PERMANENT IMPACTS TO PERENNIAL FRESHWATER MARSH HABITAT FROM THE PHASED DEVELOPMENT OF THE PROJECT SHALL BE RESTORED THROUGH NATURAL RE- ESTABLISHMENT AND ACTIVE PLANTING WITH LOCALLY COLLECTED ARROYO WILLOW THICKET PLANTINGS. THESE PLANTINGS SHALL PROVIDE COVER, FORAGING OPPORTUNITIES, AND EGG MASS ATTACHMENT SITE FOR CALIFORNIA RED-LEGGED FROGS. NATIVE WILLOW CUTTINGS SHALL BE PLANTED IN 50-FOOT-LONG BY 10-FOOT-WIDE THICKETS ALONG THE WATERLINE ALONG APPROXIMATELY 1,400 LINEAR FEET OF SLOUGH ADJACENT TO AND IN THE PROJECT SITE. THE THICKETS SHALL BE SEPARATED BY APPROXIMATELY 50-FOOT-LONG GAPS TO PROMOTE NATURAL RECRUITMENT AND HABITAT DIVERSITY ALONG THE SLOUGH EDGE. INITIAL WILLOW THICKET PLANTING EFFORT SHALL PROVIDE APPROXIMATELY 0.16 ACRE OF NATIVE DOMINATED RIPARIAN HABITAT. APPROXIMATELY 83 NONNATIVE EUCALYPTUS TREES AND UP TO 10 ADDITIONAL NONNATIVE TREES WOULD BE CUT AND REMOVED FROM THE MITIGATION AREA. EACH STUMP SHALL BE CUT AT GROUND LEVEL AND LEFT IN PLACE TO MINIMIZE GROUND DISTURBANCE AND PRESERVE BANK STABILITY. NO NATIVE RIPARIAN TREES SHALL BE REMOVED. PRIOR TO TREE REMOVAL ACTIVITIES,
A QUALIFIED BIOLOGIST SHALL CONDUCT
A TREE SURVEY TO IDENTIFY ALL EXISTING TREES WITHIN THE RESTORATION AREA TO ENSURE ONLY NON- NATIVE TREES WILL BE REMOVED. ALL NONNATIVE TREES TO BE REMOVED SHALL BE FLAGGED CLEARLY IN THE FIELD BY THE QUALIFIED BIOLOGIST AND REMOVED TO ENSURE THE SUCCESS OF PLANTING AND RECRUITMENT OF NATIVE RIPARIAN PLANTS. BECAUSE THE EUCALYPTUS TREES IN THE MITIGATION AREA ARE MATURE AND HAVE EXTENSIVE ROOT SYSTEMS, THE EUCALYPTUS STUMPS SHALL BE LEFT IN PLACE. LEAVING THESE IN PLACE WILL PREVENT BANK FAILURE OR DESTABILIZATION WHILE STILL REMOVING THE UNDESIRABLE LITTER INPUT AND SHADING OF THE SHORELINE. THE STUMPS SHALL BE GROUND DOWN TO SURFACE LEVEL. HOWEVER, ONGOING CONTROL ACTIVITIES SHALL BE REQUIRED TO PREVENT RE-SPROUTING OF THESE TREES. THE PROJECT APPLICANT SHALL BE RESPONSIBLE FOR CONDUCTING CONTROL ACTIVITIES. RE-SPROUTING CONTROL ACTIVITIES SHALL BE CONDUCTED WITH HAND TOOLS AND POWER TOOLS THAT DO NOT REQUIRE GROUND DISTURBANCE, SUCH AS PRUNING SHEARS, HAND SAWS AND CHAIN SAWS. SIMILARLY, BACKPACK SPRAYERS NOT REQUIRING GROUND DISTURBANCE SHALL BE USED FOR APPLICATION OF HERBICIDES TO CONTROL RE- SPROUTING. CONTROL ACTIVITIES SHALL BE CONDUCTED FOR A PERIOD OF TWO YEARS, COMMENCING WITHIN 30 DAYS OF STUMP GRINDING. AN ASSESSMENT SHALL BE MADE AFTER TWO YEARS TO DETERMINE IF THE APPLICANT MUST CONTINUE TO IMPLEMENT CONTROL ACTIVITIES OR IF SPROUTING HAS EFFECTIVELY BEEN PREVENTED. EVENTUALLY POISON OAK AND BLACKBERRY WILL LIKELY EXPAND TO COVER THE STUMP AREAS. REMOVAL AND ONGOING CONTROL OF NONNATIVE, INVASIVE SPECIES SHALL BE REQUIRED IN THE IMMEDIATE VICINITY OF THE WILLOW THICKET PLANTING AREAS. HOWEVER, DUE TO THE POTENTIAL PRESENCE OF CALIFORNIA RED-LEGGED FROGS AND THEIR LIKELY USE OF AREAS BELOW THE DENSE HIMALAYAN BLACKBERRY, AND IVY VEGETATION, THE APPLICANT SHALL NOT REMOVE THE UNDERSTORY WEED INFESTATIONS WITHIN THE RESTORED RIPARIAN HABITAT. DISTURBANCE FROM OUTFALL TRENCHING AREAS SHALL BE RE-SEEDED WITH A NATIVE GRASSLAND SEED MIX FOR EROSION CONTROL, AND ALLOWED TO NATURALLY REVEGETATE WITH POISON OAK AND BLACKBERRY. THE SOIL REMEDIATION AREA BELOW TOP OF BANK ON APN 018-381-01 SHALL BE CAPPED DUE TO LEACHABLE LEAD. IT SHALL BE EXCAVATED, CAPPED WITH AN IMPERMEABLE ASPHALT OR CONCRETE CAP, AND THEN TWO FEET OF CLEAN, IMPORT SOIL SHALL BE PLACED OVER THE CAP IN A STABLE CONFIGURATION. THIS CAPPED AREA SHALL BE SEEDED WITH
A NATIVE GRASSLAND MIX, PLANTED WITH CALIFORNIA ROSE, POISON OAK, AND COYOTE BRUSH, AND SHALL BE MAINTAINED AS A SENSITIVE HABITAT AREA BEHIND THE SPLIT RAIL FENCE. THE PROJECT APPLICANT SHALL SUBMIT THE MMP TO THE USFWS FOR APPROVAL AT LEAST 30 CALENDAR DAYS BEFORE THE DATE OF INITIAL GROUND DISTURBANCE REQUIRED FOR THE PHASED DEVELOPMENT OF THE PROJECT. GROUND DISTURBANCE SHALL NOT BE INITIATED UNTIL APPROVAL OF THE MMP HAS BEEN RECEIVED FROM THE USFWS. THE PROJECT APPLICANT IS ULTIMATELY RESPONSIBLE FOR OVERSEEING IMPLEMENTATION OF ACTIVITIES DESCRIBED IN THE MMP, INCLUDING ANY MODIFICATIONS, REVISIONS, OR ADDITIONS PENDING USFWS APPROVAL, AND SHALL BE RESPONSIBLE FOR FUNDING THE PLANNING AND IMPLEMENTATION OF ANY REMEDIAL MEASURES REQUIRED BY THE USFWS. (CDD-B, -E, PW) 63. NESTING BIRD AVOIDANCE (MM BIO-3). TO THE EXTENT FEASIBLE, CONSTRUCTION ACTIVITIES SHALL BE SCHEDULED TO AVOID THE NESTING SEASON. IF CONSTRUCTION ACTIVITIES ARE SCHEDULED TO TAKE PLACE OUTSIDE THE NESTING SEASON, ALL IMPACTS ON NESTING BIRDS PROTECTED UNDER THE MIGRATORY BIRD TREATY ACT AND CALIFORNIA FISH AND GAME CODE SHALL BE AVOIDED. THE NESTING SEASON FOR MOST BIRDS IN SANTA CRUZ COUNTY EXTENDS FROM FEBRUARY 1 THROUGH AUGUST 31. IF IT IS NOT POSSIBLE TO SCHEDULE CONSTRUCTION ACTIVITIES BETWEEN SEPTEMBER 1 AND JANUARY 31 THEN PRECONSTRUCTION SURVEYS FOR NESTING BIRDS SHALL BE CONDUCTED BY A QUALIFIED ORNITHOLOGIST TO ENSURE THAT NO NESTS WILL BE DISTURBED DURING PROJECT IMPLEMENTATION. THESE SURVEYS SHALL BE CONDUCTED NO MORE THAN SEVEN DAYS PRIOR TO THE INITIATION OF CONSTRUCTION ACTIVITIES AND SHALL BE CONDUCTED PRIOR TO TREE REMOVAL, TREE TRIMMING, OR OTHER VEGETATION CLEARING. DURING THE SURVEY, THE ORNITHOLOGIST SHALL INSPECT ALL TREES AND OTHER POTENTIAL NESTING HABITATS, INCLUDING TREES, SHRUBS, RUDERAL GRASSLANDS, AND BUILDINGS IN AND IMMEDIATELY ADJACENT TO THE IMPACT AREAS FOR NESTS. IF AN ACTIVE NEST IS FOUND SUFFICIENTLY CLOSE TO WORK AREAS TO BE DISTURBED BY THESE ACTIVITIES, THE ORNITHOLOGIST SHALL DETERMINE THE EXTENT OF A CONSTRUCTION-FREE BUFFER ZONE TO BE ESTABLISHED AROUND THE NEST (TYPICALLY 300 FEET FOR RAPTORS AND 100 FEET FOR OTHER SPECIES), TO ENSURE THAT NO NESTS OF SPECIES PROTECTED BY THE MIGRATORY BIRD TREATY ACT AND CALIFORNIA FISH AND GAME CODE SHALL BE DISTURBED DURING PROJECT IMPLEMENTATION. IF CONSTRUCTION ACTIVITIES ARE NOT BE INITIATED UNTIL AFTER THE START OF THE NESTING SEASON, ALL POTENTIAL NESTING SUBSTRATES, INCLUDING BUSHES, TREES, GRASSES, AND OTHER VEGETATION, THAT ARE SCHEDULED TO BE REMOVED BY THE PROJECT SHALL BE REMOVED PRIOR TO THE START OF THE NESTING SEASON ON FEBRUARY 1. THIS WILL PRECLUDE THE INITIATION OF NESTS IN THIS VEGETATION, AND PREVENT THE POTENTIAL DELAY OF THE PROJECT DUE TO THE PRESENCE OF ACTIVE NESTS IN THESE SUBSTRATES. (CDD-B, -E, PW) 64. PREVENT THE SPREAD OF INVASIVE SPECIES (MM BIO-4). INVASIVE PLANTS FOUND WITHIN THE PHASE ONE AND TWO FOOTPRINTS SHALL BE REMOVED AND DISPOSED OF IN
A SANITARY LANDFILL, INCINERATED OFF-SITE, OR DISPOSED OF IN A HIGH-TEMPERATURE COMPOSTING FACILITY THAT CAN COMPOST USING METHODS KNOWN TO KILL WEED SEEDS. HIMALAYAN BLACKBERRY HAS HABITAT VALUES FOR THE CALIFORNIA RED-LEGGED FROG AND SHALL NOT BE SYSTEMATICALLY REMOVED FROM THE PROJECT SITE. WHEN REMOVING INVASIVE PLANT MATERIAL FROM THE RIPARIAN HABITAT, SEED AND/OR PROPAGULE DISPERSAL SHALL BE MINIMIZED BY BAGGING MATERIAL OR COVERING TRUCKS TRANSPORTING SUCH MATERIAL FROM THE PROJECT SITE. DURING CONSTRUCTION ACTIVITIES, ALL SEEDS AND STRAW MATERIALS USED ON SITE SHALL BE WEED-FREE, AND ALL GRAVEL AND FILL MATERIAL SHALL BE CERTIFIED WEED FREE TO THE EXTENT FEASIBLE. IN ADDITION, CONSTRUCTION VEHICLES AND ALL EQUIPMENT SHALL BE WASHED, INCLUDING WHEELS, UNDERCARRIAGES, AND BUMPERS, BEFORE ENTERING THE PHASE ONE AND TWO FOOTPRINTS. VEHICLES SHALL BE CLEANED AT EXISTING CONSTRUCTION YARDS OR CAR WASHES. THE PROJECT APPLICANT SHALL DOCUMENT THAT ALL VEHICLES HAVE BEEN WASHED PRIOR TO COMMENCING WORK. IN ADDITION, TOOLS SUCH AS CHAINSAWS, HAND CLIPPERS, AND PRUNERS SHALL BE WASHED BEFORE ENTERING THE WORK AREAS. ALL WASHING SHALL TAKE PLACE WHERE RINSE WATER IS COLLECTED AND DISPOSED OF IN EITHER
A SANITARY SEWER OR
A LANDFILL. (CDD-B, -E, PW) 65. RIPARIAN WOODLAND PROTECTION AND RESTORATION (MM BIO-5). FOR OUTFALL TRENCHING ACTIVITIES, AN AIR SPADE SHALL BE USED WHEN UNDER THE DRIPLINE OF THE RIPARIAN CANOPY TO AVOID DAMAGE TO PRIMARY ROOT SYSTEMS OF RIPARIAN TREES. NO TREES WITHIN THE RIPARIAN ZONE SHALL BE REMOVED DURING PROJECT CONSTRUCTION ACTIVITIES. PRIOR TO THE START OF CONSTRUCTION, THE BOUNDARIES OF THE WORK AREAS WITHIN THE RIPARIAN ZONE SHALL BE CLEARLY DELINEATED WITH ENVIRONMENTALLY SENSITIVE AREA FENCING (ORANGE-COLORED, PLASTIC CONSTRUCTION FENCING), TO PREVENT WORKERS OR EQUIPMENT FROM INADVERTENTLY STRAYING FROM THE WORK AREA. ALL CONSTRUCTION PERSONNEL, EQUIPMENT, AND VEHICLE MOVEMENT SHALL BE CONFINED TO DESIGNATED CONSTRUCTION AND STAGING AREAS. STAGING AREAS ARE RESTRICTED TO AREAS DELINEATED IN THE PROJECT PLANS AND ENCOMPASSED BY THE ENVIRONMENTALLY SENSITIVE AREA FENCING. NO STAGING SHALL BE ALLOWED UNDER THE DRIPLINE OF THE RIPARIAN CANOPY. PERMANENT IMPACTS ON THE UNDERSTORY OF RIPARIAN ORNAMENTAL WOODLANDS SHALL BE MITIGATED AS PER THE DESCRIPTION IN MITIGATION MEASURE MM BIO-2M AT A REPLACEMENT RATIO OF 2:1 (REPLACEMENT WILLOW PLANTING AREA TO PERMANENT IMPACT AREA) FOR A TOTAL OF 0.02 ACRE. COMPENSATION REQUIREMENTS FOR TEMPORARY PROJECT- RELATED IMPACTS TO RIPARIAN WOODLAND SHALL BE BASED ON THE REMOVED ACREAGE OF UNDERSTORY COVER, AND SHALL BE MITIGATED AT A REPLACEMENT RATIO OF AT LEAST 1:1 (WILLOW PLANTING AREA TO SHRUB REMOVAL AREA) FOR A TOTAL OF 0.01 ACRE. THE MITIGATION SHALL BE DEEMED COMPLETE AND THE PROJECT APPLICANT SHALL BE RELEASED FROM FURTHER RESPONSIBILITIES WHEN THE FINAL SUCCESS CRITERIA HAVE BEEN MET AS DETERMINED BY THE CITY AND RESPONSIBLE PERMITTING AGENCIES. (CDD-B, -E, PW) 66. RIPARIAN RUDERAL GRASSLAND COMMUNITY RESTORATION (MM BIO-6). TEMPORARY IMPACTS TO RIPARIAN RUDERAL GRASSLAND SHALL BE MITIGATED AT A REPLACEMENT RATIO OF 1:1 (REPLACEMENT PLANTING AREA TO TEMPORARY IMPACT AREA) FOR A TOTAL OF 0.32 ACRE. THE MITIGATION PLANTING AREA SHALL BE ESTABLISHED ON THE CAPPED AREA ON APN 018- 381-01. THE CAPPED AREA SHALL BE SEEDED WITH
A NATIVE GRASSLAND MIX, PLANTED WITH CALIFORNIA ROSE, POISON OAK, AND COYOTE BRUSH, AND SHALL BE MAINTAINED AS A SENSITIVE HABITAT AREA BEHIND THE SPLIT RAIL FENCE POST CONSTRUCTION. THE MITIGATION SHALL BE DEEMED COMPLETE AND THE PROJECT APPLICANT SHALL BE RELEASED FROM FURTHER RESPONSIBILITIES WHEN THE FINAL SUCCESS CRITERIA HAVE BEEN MET AS DETERMINED BY THE CITY AND RESPONSIBLE PERMITTING AGENCIES. (CDD-B, -E, PW) 67. PERENNIAL FRESHWATER MARSH COMMUNITY RESTORATION (MM BIO-7). PERMANENT IMPACTS ON PERENNIAL FRESHWATER MARSH SHALL BE MITIGATED AT A REPLACEMENT RATIO OF 3:1 (REPLACEMENT WILLOW PLANTING AREA TO IMPACT AREA) FOR A TOTAL OF 0.01 ACRE. BOTH TEMPORARY AND PERMANENT IMPACTS TO PERENNIAL FRESHWATER MARSH HABITAT SHALL BE RESTORED THROUGH NATURAL RE-ESTABLISHMENT AND ACTIVE PLANTING WITH LOCALLY COLLECTED ARROYO WILLOW THICKET PLANTINGS ALONG THE WATSONVILLE SLOUGH WITHIN THE PROJECT SITE. THE MITIGATION SHALL BE DEEMED COMPLETE AND THE PROJECT APPLICANT SHALL BE RELEASED FROM FURTHER RESPONSIBILITIES WHEN THE FINAL SUCCESS CRITERIA HAVE BEEN MET AS DETERMINED BY THE CITY AND THE RESPONSIBLE PERMITTING AGENCIES. (CDD-B, -E, PW) 68. ARCHAEOLOGICAL RESOURCES CONSTRUCTION MONITORING (MM CR-1A). ALL PROJECT- RELATED GROUND DISTURBING ACTIVITIES IN NATIVE SOILS AT THE PROJECT SITE SHALL BE MONITORED BY A QUALIFIED ARCHAEOLOGIST. ARCHAEOLOGICAL MONITORING SHALL BE PERFORMED UNDER THE DIRECTION OF AN ARCHAEOLOGIST MEETING THE SECRETARY OF THE INTERIOR'S PROFESSIONAL QUALIFICATION STANDARDS FOR ARCHAEOLOGY (NATIONAL PARK SERVICE, 1983). SHOULD THE PROJECT SITE BE DETERMINED TO HAVE LITTLE IF ANY POTENTIAL TO YIELD SUBSURFACE CULTURAL RESOURCES DEPOSITS, THE QUALIFIED ARCHAEOLOGIST MAY RECOMMEND THAT MONITORING BE REDUCED OR ELIMINATED AFTER CONSULTING WITH THE CITY AND NATIVE AMERICAN REPRESENTATIVES. (CDD-B, -E, PW) 69. UNANTICIPATED DISCOVERY OF CULTURAL RESOURCES (MM CR-1B). IN THE EVENT THAT CULTURAL RESOURCES ARE ENCOUNTERED DURING GROUND-DISTURBING ACTIVITIES, WORK IN THE IMMEDIATE AREA SHALL HALT, AND THE QUALIFIED ARCHAEOLOGIST SHALL EVALUATE THE FIND. EVALUATION OF SIGNIFICANCE FOR THE FIND MAY INCLUDE THE DETERMINATION OF WHETHER OR NOT THE FIND QUALIFIES AS AN ARCHAEOLOGICAL SITE. IF NECESSARY, THE EVALUATION SHALL REQUIRE PREPARATION OF A TREATMENT PLAN AND ARCHAEOLOGICAL TESTING FOR CRHR ELIGIBILITY. IF THE DISCOVERY PROVES TO BE SIGNIFICANT UNDER CEQA AND CANNOT BE AVOIDED BY THE PROJECT, ADDITIONAL WORK, SUCH AS DATA RECOVERY EXCAVATION, MAY BE WARRANTED TO MITIGATE ANY SIGNIFICANT IMPACTS TO HISTORICAL RESOURCES. MITIGATION OF SIGNIFICANT IMPACTS TO THE FIND MAY INCLUDE A DAMAGE ASSESSMENT OF THE FIND, ARCHIVAL RESEARCH, AND/OR DATA RECOVERY TO REMOVE ANY IDENTIFIED ARCHAEOLOGICAL DEPOSITS, AS DETERMINED BY THE QUALIFIED ARCHAEOLOGIST. AFTER EFFECTS TO THE FIND HAVE BEEN APPROPRIATELY MITIGATED, WORK IN THE AREA MAY RESUME. (CDD-B, -E, PW) 70. UNANTICIPATED DISCOVERY OF PALEONTOLOGICAL RESOURCES (MM CR-2B). IF FOSSILS ARE DISCOVERED BY CONSTRUCTION PERSONNEL, ALL WORK IN THE IMMEDIATE VICINITY OF THE FIND SHALL CEASE AND A QUALIFIED PALEONTOLOGIST SHALL BE CONTACTED TO EVALUATE THE FIND BEFORE RESTARTING WORK IN THE AREA.
A QUALIFIED PALEONTOLOGIST IS DEFINED BY THE SVP STANDARDS AS AN INDIVIDUAL WITH
A MASTER'S OF SCIENCE OR DOCTORATE DEGREE IN PALEONTOLOGY OR GEOLOGY WHO IS EXPERIENCED WITH PALEONTOLOGICAL PROCEDURES AND TECHNIQUES, WHO IS KNOWLEDGEABLE IN THE GEOLOGY OF CALIFORNIA, AND WHO HAS WORKED AS
A PALEONTOLOGICAL MITIGATION PROJECT SUPERVISOR FOR
A LEAST ONE YEAR (SVP, 2010). IF THE QUALIFIED PALEONTOLOGIST DETERMINES THAT THE FOSSIL OR FOSSILS ARE SCIENTIFICALLY SIGNIFICANT, THE FIND SHALL BE RECOVERED UNDER HIS OR HER SUPERVISION. IF NECESSARY, THE PALEONTOLOGIST SHALL HAVE THE AUTHORITY TO TEMPORARILY DIRECT, DIVERT, OR HALT CONSTRUCTION ACTIVITY TO ENSURE THAT THE FOSSIL OR FOSSILS CAN BE REMOVED IN A SAFE AND TIMELY MANNER. ONCE SALVAGED, SIGNIFICANT FOSSILS SHALL BE IDENTIFIED TO THE LOWEST POSSIBLE TAXONOMIC LEVEL, PREPARED TO
A CURATION-READY CONDITION AND CURATED IN
A SCIENTIFIC INSTITUTION WITH
A PERMANENT PALEONTOLOGICAL COLLECTION, SUCH AS THE UNIVERSITY OF CALIFORNIA MUSEUM OF PALEONTOLOGY, ALONG WITH ALL PERTINENT FIELD NOTES, PHOTOS, DATA, AND MAPS. FOSSILS OF UNDETERMINED SIGNIFICANCE AT THE TIME OF COLLECTION MAY ALSO WARRANT CURATION AT THE DISCRETION OF THE QUALIFIED PALEONTOLOGIST. ADDITIONAL MEASURES SUCH AS IMPLEMENTATION OF
A PALEONTOLOGICAL MITIGATION AND MONITORING PROGRAM AND PREPARATION OF A FINAL MITIGATION AND MONITORING REPORT MAY ALSO BE WARRANTED. POTENTIAL MITIGATION REQUIRED IN
A PALEONTOLOGICAL MITIGATION AND MONITORING PROGRAM MAY INCLUDE, BUT WOULD NOT BE LIMITED TO IDENTIFICATION OF AREAS REQUIRING MONITORING, CONTRACTING OF A QUALIFIED PALEONTOLOGICAL MONITOR(S) TO CONDUCT ONGOING MONITORING, COLLECTION OF PALEONTOLOGICAL RESOURCES AND ASSOCIATED DATA, CURATION OF PALEONTOLOGICAL RESOURCES IN AN ACCREDITED INSTITUTION AND PREPARATION OF A FINAL MITIGATION AND MONITORING REPORT. (CDD-B, -E, PW) 71. NATIVE AMERICAN CONSTRUCTION MONITORING (MM CR-4).
A NATIVE AMERICAN REPRESENTATIVE SHALL MONITOR ALL EARTH-MOVING ACTIVITIES WITHIN NATIVE SOIL. IF CULTURAL MATERIALS THAT MAY BE IMPORTANT TO NATIVE AMERICANS ARE IDENTIFIED DURING CONSTRUCTION, WORK IN THE IMMEDIATE AREA MUST HALT AND THE FIND EVALUATED FOR SIGNIFICANCE UNDER CEQA. SHOULD THE PROJECT SITE BE DETERMINED TO HAVE LITTLE IF ANY POTENTIAL TO IDENTIFY CULTURAL MATERIALS THAT MAY BE IMPORTANT TO NATIVE AMERICANS, THE NATIVE AMERICAN REPRESENTATIVE MAY RECOMMEND THAT MONITORING BE REDUCED OR ELIMINATED AFTER CONSULTING WITH THE CITY. (CDD-B, -E, PW) 72. DESIGN-LEVEL GEOTECHNICAL INVESTIGATION AND FINAL GRADING PLAN (MM GEO-2). PRIOR TO ISSUANCE OF
A GRADING PERMIT FOR THE PHASED DEVELOPMENT OF THE PROJECT, A DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL BE CONDUCTED AND MUST SHOW THAT SLOPES AND RETAINING WALLS ON THE PROJECT SITE WOULD BE STABLE UNDER BOTH STATIC AND SEISMIC CONDITIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL BE PREPARED BY A REGISTERED PROFESSIONAL GEOTECHNICAL ENGINEER AND SHALL PROVIDE SLOPE STABILITY ANALYSES BASED ON THE FINAL PROJECT DESIGN AND SHALL INCLUDE ADEQUATE FACTORS OF SAFETY FOR BOTH STATIC AND SEISMIC CONDITIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL EVALUATE THE FINAL GRADING PLAN FOR THE PROJECT AS WELL AS FINAL DESIGN PLANS FOR ONSITE STRUCTURES AND FOUNDATIONS. THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION SHALL RECOMMEND SLOPE STABILIZATION MEASURES, AS NECESSARY, TO ENSURE THAT SOILS ON THE PROJECT SITE REMAIN STABLE FOLLOWING GRADING AND CONSTRUCTION OF ONSITE STRUCTURES UNDER BOTH STATIC AND SEISMIC CONDITIONS. THESE MEASURES SHALL BE INCORPORATED INTO THE FINAL GRADING PLANS TO ENSURE SLOPES ARE STABLE UNDER THE CONDITIONS ANALYZED IN THE DESIGN-LEVEL GEOTECHNICAL INVESTIGATION. SLOPE STABILIZATION MEASURES MAY INCLUDE, BUT ARE NOT LIMITED TO: DECREASING THE INCLINATION OR HEIGHT OF THE GRADED SLOPE, BACKFILLING WITH LIGHTWEIGHT MATERIAL, INSTALLING PLASTIC MESH REINFORCEMENTS OR ROCK-FILLED BUTTRESSES, INSTALLING DRAIN PIPES OR OTHER DRAINAGE SYSTEMS, INSTALLING RETAINING WALLS, OR INSTALLING ANCHORS, BOLTS, OR MICRO-PILES, OR CHEMICALLY TREATING THE SOIL TO STABILIZE THE SLOPE. (CDD-B, -E, PW) 73. RAINGARDEN OPERATIONS & MAINTENANCE MANUAL (MM HWQ-1). THE PROJECT APPLICANT SHALL PREPARE AN OPERATIONS AND MAINTENANCE MANUAL FOR THE PROPOSED RAINGARDENS. THE OPERATIONS AND MAINTENANCE MANUAL SHALL INCLUDE, AT
A MINIMUM,
A SCHEDULE OF ANNUAL MAINTENANCE ACTIVITIES THAT THE APPLICANT SHALL BE RESPONSIBLE FOR COMPLETING. IN ORDER TO FACILITATE MAINTENANCE OF THE RAINGARDENS, THE OPERATIONS AND MAINTENANCE MANUAL SHALL SPECIFY THAT THE RAINGARDENS WILL BE PLANTED WITH NATIVE GRASSES, SEDGES AND RUSHES, AND THAT PLANTING OF TREES IN THE RAINGARDEN SHALL BE AVOIDED. THE OPERATIONS AND MAINTENANCE MANUAL SHALL ALSO PROHIBIT MAINTENANCE ACTIVITIES FROM OCCURRING DURING THE BREADING SEASON OF CALIFORNIA RED-LEGGED FROG (DECEMBER THROUGH MAY), AND THAT IDEALLY MAINTENANCE SHALL BE CONDUCTED DURING SEPTEMBER. THE APPLICANT SHALL SUBMIT THE OPERATIONS AND MAINTENANCE MANUAL TO THE CITY FOR REVIEW AND APPROVAL PRIOR TO ISSUANCE OF THE SITE GRADING OR BUILDING PERMITS FOR PHASE TWO OF THE PROJECT. (CDD-E, PW) 74. DUST CONTROL. BLOWING DUST SHALL BE REDUCED BY TIMING CONSTRUCTION ACTIVITIES SO THAT PAVING AND BUILDING CONSTRUCTION BEGIN AS SOON AS POSSIBLE AFTER COMPLETION OF GRADING, AND BY LANDSCAPING DISTURBED SOILS AS SOON AS POSSIBLE. FURTHER, WATER TRUCKS SHALL BE PRESENT AND IN USE AT THE CONSTRUCTION SITE. ALL PORTIONS OF THE SITE SUBJECT TO BLOWING DUST SHALL BE WATERED AS OFTEN AS DEEMED NECESSARY BY THE CITY IN ORDER TO INSURE PROPER CONTROL OF BLOWING DUST FOR THE DURATION OF THE PROJECT. WATERING ON PUBLIC STREETS SHALL NOT OCCUR. STREETS WILL BE CLEANED BY STREET SWEEPERS OR BY HAND AS OFTEN AS DEEMED NECESSARY BY THE CITY. ALL PUBLIC STREETS AND MEDIANS SOILED OR LITTERED DUE TO THIS CONSTRUCTION ACTIVITY ARE TO BE CLEANED AND SWEPT ON A DAILY BASIS DURING THE WORKWEEK TO THE SATISFACTION OF THE CITY. TO MINIMIZE DUST/GRADING IMPACTS DURING CONSTRUCTION THE APPLICANT SHALL: a. SPRAY WATER ON ALL EXPOSED EARTH SURFACES DURING CLEARING, GRADING, EARTH MOVING AND OTHER SITE PREPARATION ACTIVITIES THROUGHOUT THE DAY TO MINIMIZE DUST. b. USE TARPAULINS OR OTHER EFFECTIVE COVERS ON ALL STOCKPILED EARTH MATERIAL AND ON ALL HAUL TRUCKS TO MINIMIZE DUST. c. SWEEP THE ADJACENT STREET FRONTAGES AT LEAST ONCE A DAY OR AS NEEDED TO REMOVE SILT AND OTHER DIRT WHICH IS EVIDENT FROM CONSTRUCTION ACTIVITIES. d. ENSURE THAT CONSTRUCTION VEHICLES ARE CLEANED PRIOR TO LEAVING THE CONSTRUCTION SITE TO PREVENT DUST AND DIRT FROM BEING TRACKED OFF-SITE. e. THE CITY SHALL HAVE THE AUTHORITY TO STOP ALL GRADING OPERATIONS, IF IN OPINION OF CITY STAFF, INADEQUATE DUST CONTROL OR EXCESSIVE WIND CONDITIONS CONTRIBUTE TO FUGITIVE DUST EMISSIONS. (CDD-E, PW) 75. CONSTRUCTION TRAFFIC ROUTES (MM TRA-4). CONSTRUCTION TRUCK TRAFFIC SHALL TRAVEL TO AND FROM THE SITE VIA BEACH STREET AND OHLONE PARKWAY SOUTH OF THE SITE. CONSTRUCTION TRUCK TRAFFIC MUST AVOID TRAVELLING ALONG THE MAIN STREET CORRIDOR AND IMMEDIATELY IN FRONT OF THE LANDMARK ELEMENTARY SCHOOL. ADDITIONALLY, A FLAGGER SHALL BE PROVIDED WHERE CONSTRUCTION TRUCK TRAFFIC ENTERS AND EXITS OHLONE PARKWAY. (CDD-E, PW) 76. CONSTRUCTION TRAFFIC ROUTE VIA ERRINGTON ROAD. CONSTRUCTION TRUCK TRAFFIC TO AND FROM THE SITE SHALL USE ERRINGTON ROAD AND AVOID USING LOMA VISTA DRIVE. CONSTRUCTION TRUCK TRAFFIC INCLUDES TRIPS ASSOCIATED WITH GRADING, DEMOLITION AND BUILDING ACTIVITIES. AS NOTED IN CONDITION OF APPROVAL NO. 72, A FLAGGER SHALL BE PROVIDED WHERE CONSTRUCTION TRUCK TRAFFIC ENTERS AND EXITS OHLONE PARKWAY. (CDD- E, PW) 77. 78. 79. 80. 81. 82. 83. 84. PRIOR TO OCCUPANCY, THE FOLLO
85. 86. 87. 88. 89. KEY TO DEPARTMENT RESPONSIBIL
CDD-B DEVELOPMENT DEPARTMENT (PLAN
DEPARTMENT (ENGINEERING) PW WFD DEPARTMENT CAT DRAWN BY:
BY DATE DESCRIPTION
REVISION BLOCK DESIGNED BY: DATE: SCALE: PROJECT NO: SHEET: GSDMR 08/12/2021 AS NOTED 20-021 NUMBER CIVIL ENGINEERING LAND PLANNING PROJECT MANAGEMENT CONSTRUCTION SUPPORT QSD AND QSP SERIVCES 2905 KRISTIE COURT SANTA CRUZ, CA 95065 TEL (831) 462-2905 www.ramseycivilengineering.com DAVID RAMSEY DATE RCE# 73735 APN# 018-372-14 PLAN TYPE
HILLCREST SUBDIVISION
511 OHLONE PARKWAY, WATSONVILLE, CA, 95076
DAV I D RAMS E Y NO. C73735
R GE I ST ERED
PROFESS IONAL
ENGI NEER
S TAT E
OF CAL I FORNIA
CIVI L RESIDENTIAL SUBDIVISION
GS/DMR 09/29/2021 RESPONSE 1 - PLAN CHECK COMMENTS 09/21/2021 GS/DMR 01/20/2022 RESPONSE 2 - PLAN CHECK COMMENTS 10/08/2021 B A
GS/DMR 03/18/2022 RESPONSE 3 - PLAN CHECK COMMENTS 03/11/2022 C C1.2
CONDITIONS OF APPROVAL
Exhibit B