31b. Draft Subsequent Environmental Impact Report No. 352 Volume 2 — Anaheim City Council, April 16, 2024 (part 60 of 64)

June 25, 2021
Charles Cisneros
Psomas
Via Email to: [email protected]
Re: Native American Tribal Consultation, Pursuant to the Assembly Bill 52 (AB 52), Amendments to the California Environmental Quality Act (CEQA) (Chapter 532, Statutes of 2014), Public Resources Code Sections 5097.94 (m), 21073, 21074, 21080.3.1, 21080.3.2, 21082.3, 21083.09, 21084.2 and 21084.3, 3WDI000400 Project, Orange County
Dear Mr. Cisneros:

Pursuant to Public Resources Code section 21080.3.1 (c), attached is a consultation list of tribes that are traditionally and culturally affiliated with the geographic area of the above-listed project. Please note that the intent of the AB 52 amendments to CEQA is to avoid and/or mitigate impacts to tribal cultural resources, (Pub. Resources Code §21084.3 (a)) (“Public agencies shall, when feasible, avoid damaging effects to any tribal cultural resource.”) Public Resources Code sections 21080.3.1 and 21084.3(c) require CEQA lead agencies to consult with California Native American tribes that have requested notice from such agencies of proposed projects in the geographic area that are traditionally and culturally affiliated with the tribes on projects for which a Notice of Preparation or Notice of Negative Declaration or Mitigated Negative Declaration has been filed on or after July 1, 2015. Specifically, Public Resources Code section 21080.3.1 (d) provides:

Within 14 days of determining that an application for a project is complete or a decision by a public agency to undertake a project, the lead agency shall provide formal notification to the designated contact of, or a tribal representative of, traditionally and culturally affiliated California Native American tribes that have requested notice, which shall be accomplished by means of at least one written notification that includes a brief description of the proposed project and its location, the lead agency contact information, and a notification that the California Native American tribe has 30 days to request consultation pursuant to this section.

The AB 52 amendments to CEQA law does not preclude initiating consultation with the tribes that are culturally and traditionally affiliated within your jurisdiction prior to receiving requests for notification of projects in the tribe’s areas of traditional and cultural affiliation. The Native American Heritage Commission (NAHC) recommends, but does not require, early consultation as a best practice to ensure that lead agencies receive sufficient information about cultural resources in a project area to avoid damaging effects to tribal cultural resources.

The NAHC also recommends, but does not require that agencies should also include with their notification letters, information regarding any cultural resources assessment that has been completed on the area of potential effect (APE), such as:

1. The results of any record search that may have been conducted at an Information Center of the California Historical Resources Information System (CHRIS), including, but not limited to:

CHAIRPERSON
Laura Miranda
Luiseño

VICE CHAIRPERSON
Reginald Pagaling
Chumash

SECRETARY
Merri Lopez-Keifer
Luiseño

PARLIAMENTARIAN
Russell Attebery
Karuk

COMMISSIONER
William Mungary
Paiute/White Mountain
Apache

COMMISSIONER
Julie TumamaitStenslie
Chumash

COMMISSIONER
[Vacant]

EXECUTIVE SECRETARY
Christina Snider
Pomo

NAHC HEADQUARTERS
1550 Harbor Boulevard
Suite 100
West Sacramento,
California 95691
(916) 373-3710
[email protected]
NAHC.ca.gov

Page 2 of 2 ends

• A listing of any and all known cultural resources that have already been recorded on or adjacent to the APE, such as known archaeological sites;
• Copies of any and all cultural resource records and study reports that may have been provided by the Information Center as part of the records search response; • Whether the records search indicates a low, moderate, or high probability that unrecorded cultural resources are located in the APE; and
• If a survey is recommended by the Information Center to determine whether previously unrecorded cultural resources are present.

2. The results of any archaeological inventory survey that was conducted, including:
• Any report that may contain site forms, site significance, and suggested mitigation measures.

All information regarding site locations, Native American human remains, and associated funerary objects should be in a separate confidential addendum, and not be made available for public disclosure in accordance with Government Code section 6254.10.

3. The result of any Sacred Lands File (SLF) check conducted through the Native American Heritage Commission was negative.

4. Any ethnographic studies conducted for any area including all or part of the APE; and

5. Any geotechnical reports regarding all or part of the APE.

Lead agencies should be aware that records maintained by the NAHC and CHRIS are not exhaustive and a negative response to these searches does not preclude the existence of a tribal cultural resource. A tribe may be the only source of information regarding the existence of a tribal cultural resource.

This information will aid tribes in determining whether to request formal consultation. In the event that they do, having the information beforehand will help to facilitate the consultation process.

If you receive notification of change of addresses and phone numbers from tribes, please notify the NAHC. With your assistance, we can assure that our consultation list remains current.

If you have any questions, please contact me at my email address: [email protected].

Sincerely,
Andrew Green
Cultural Resources Analyst
Attachment
Campo Band of Diegueno
Mission Indians
Ralph Goff, Chairperson
36190 Church Road, Suite 1
Campo, CA, 91906
Phone: (619) 478 - 9046
Fax: (619) 478-5818
[email protected]
Diegueno
Ewiiaapaayp Band of Kumeyaay
Indians
Michael Garcia, Vice Chairperson
4054 Willows Road
Alpine, CA, 91901
Phone: (619) 445 - 6315
Fax: (619) 445-9126
[email protected]
Diegueno
Ewiiaapaayp Band of Kumeyaay
Indians
Robert Pinto, Chairperson
4054 Willows Road
Alpine, CA, 91901
Phone: (619) 445 - 6315
Fax: (619) 445-9126
[email protected]
Diegueno
Gabrieleno Band of Mission
Indians - Kizh Nation
Andrew Salas, Chairperson
P.O. Box 393
Covina, CA, 91723
Phone: (626) 926 - 4131
[email protected]
Gabrieleno
Gabrieleno/Tongva San Gabriel
Band of Mission Indians
Anthony Morales, Chairperson
P.O. Box 693
San Gabriel, CA, 91778
Phone: (626) 483 - 3564
Fax: (626) 286-1262
[email protected]
Gabrieleno
Gabrielino /Tongva Nation
Sandonne Goad, Chairperson
106 1/2 Judge John Aiso St.,
#231
Los Angeles, CA, 90012
Phone: (951) 807 - 0479
[email protected]
Gabrielino
Gabrielino Tongva Indians of
California Tribal Council
Christina Conley, Tribal
Consultant and Administrator
P.O. Box 941078
Simi Valley, CA, 93094
Phone: (626) 407 - 8761
[email protected]
u
Gabrielino
Gabrielino Tongva Indians of
California Tribal Council
Robert Dorame, Chairperson
P.O. Box 490
Bellflower, CA, 90707
Phone: (562) 761 - 6417
Fax: (562) 761-6417
[email protected]
Gabrielino
Gabrielino-Tongva Tribe
Charles Alvarez,
23454 Vanowen Street
West Hills, CA, 91307
Phone: (310) 403 - 6048
[email protected]
Gabrielino
Juaneno Band of Mission
Indians Acjachemen Nation -
Belardes
Matias Belardes, Chairperson
32161 Avenida Los Amigos
San Juan Capisttrano, CA, 92675
Phone: (949) 293 - 8522
[email protected]
Juaneno
La Posta Band of Diegueno
Mission Indians
Gwendolyn Parada, Chairperson
8 Crestwood Road
Boulevard, CA, 91905
Phone: (619) 478 - 2113
Fax: (619) 478-2125
[email protected]
Diegueno
1 of 2
This list is current only as of the date of this document. Distribution of this list does not relieve any person of statutory responsibility as defined in Section 7050.5 of the Health and Safety Code, Section 5097.94 of the Public Resources Code and section 5097.98 of the Public Resources Code.

This list is only applicable for consultation with Native American tribes under Public Resources Code Sections 21080.3.1 for the proposed 3WDI000400 Project, Orange County.

PROJ-2021-
003492
06/25/2021 11:29 AM
Native American Heritage Commission
Tribal Consultation List
Orange County
6/25/2021
La Posta Band of Diegueno
Mission Indians
Javaughn Miller, Tribal
Administrator
8 Crestwood Road
Boulevard, CA, 91905
Phone: (619) 478 - 2113
Fax: (619) 478-2125
[email protected]
Diegueno
Manzanita Band of Kumeyaay
Nation
Angela Elliott Santos, Chairperson
P.O. Box 1302
Boulevard, CA, 91905
Phone: (619) 766 - 4930
Fax: (619) 766-4957
Diegueno
Mesa Grande Band of Diegueno
Mission Indians
Michael Linton, Chairperson
P.O Box 270
Santa Ysabel, CA, 92070
Phone: (760) 782 - 3818
Fax: (760) 782-9092
[email protected]
Diegueno
Pala Band of Mission Indians
Shasta Gaughen, Tribal Historic
Preservation Officer
PMB 50, 35008 Pala Temecula
Rd.

Pala, CA, 92059
Phone: (760) 891 - 3515
Fax: (760) 742-3189
[email protected]
Cupeno
Luiseno
Santa Rosa Band of Cahuilla
Indians
Lovina Redner, Tribal Chair
P.O. Box 391820
Anza, CA, 92539
Phone: (951) 659 - 2700
Fax: (951) 659-2228
[email protected]
Cahuilla
Soboba Band of Luiseno
Indians
Isaiah Vivanco, Chairperson
P. O. Box 487
San Jacinto, CA, 92581
Phone: (951) 654 - 5544
Fax: (951) 654-4198
[email protected]
Cahuilla
Luiseno
2 of 2
This list is current only as of the date of this document. Distribution of this list does not relieve any person of statutory responsibility as defined in Section 7050.5 of the Health and Safety Code, Section 5097.94 of the Public Resources Code and section 5097.98 of the Public Resources Code.

This list is only applicable for consultation with Native American tribes under Public Resources Code Sections 21080.3.1 for the proposed 3WDI000400 Project, Orange County.

PROJ-2021-
003492
06/25/2021 11:29 AM
Native American Heritage Commission
Tribal Consultation List
Orange County
6/25/2021
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Ralph Goff, Chairman
Campo Band of Diegueno Mission Indians
36190 Church Road, Suite 1
Campo, CA 91906
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Goff:

Thank you for your interest in proposed development projects in the City of Anaheim.

Pursuant to the provisions of Assembly Bill 52 and Section 21080.3.1 (d) of the Public Resources Code, for formal notification of proposed projects in the geographic area that is traditionally and culturally affiliated with your tribe. This notification is for the purpose of extending the opportunity to request a consultation to protect any tribal cultural resources that may exist in the planning area. Also, pursuant to the provisions of Senate Bill 18 (SB 18) and Government Code 65352.3, the Lead Agency must notify local Native American Tribes of any General Plan Amendment request, also for the purpose of consultation to protect cultural resources that may exist in the planning area.

DisneylandForward (Project) would provide more flexibility as to location for permitted uses within the Disneyland Resort Specific Plan (DRSP) area and at properties within the Anaheim Resort Specific Plan (ARSP) area owned or controlled by Walt Disney Parks and Resorts U.S., Inc. (the Applicant) or other subsidiaries of The Walt Disney Company (Disney’s ARSP Properties). The Project also will provide for future streamlined review by the City of Anaheim (City) of the Applicant’s projects within the DRSP area and at Disney’s ARSP Properties. Both the DRSP and the ARSP are located within an area of the City known as The Anaheim Resort, which encompasses approximately 1,078 acres generally located adjacent to and southwest of Interstate 5 (I-5) between Ball Road to the north, Walnut Street to the west, and Chapman Avenue to the south. Attached below is Figure 1: Project Location which is a map for your review of project site’s vicinity.

The City, as the Lead Agency, is requiring the preparation of an Initial Study pursuant to the California Environmental Quality Act (CEQA) to evaluate the potential impacts of the Proposed Project. Therefore, pursuant to Assembly Bill 52 and Section 21080.3.1 (d) of the Public Resources Code, I am extending the opportunity to request a consultation to protect any tribal cultural resources that may exist in the planning area. Additionally, The Project would require a General Plan Amendment and Specific Plan Amendments. As part of the City’s responsibilities pursuant to Senate Bill (SB) 18 and Government Code 65352.3, local Native American tribes must be notified of a General Plan Amendment or Specific Plan Amendment request for the purpose of offering a consultation to protect any cultural resources that may exist in the planning area.

Ralph Goff
December 10, 2021

Page 2 of 3 ends

Please contact me within 90 days of receipt of this letter if you would like additional information about this project or would like to consult with the City of Anaheim about any tribal cultural resources located within the project area. I can be reached at 714-765-5238 or [email protected].

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Ralph Goff
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Robert Pinto, Chairperson
Ewiiaapaayp Band of Kumeyaay Indians
4054 Willows Road
Alpine, CA 91901
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Vice Chairperson Pinto:

Thank you for your interest in proposed development projects in the City of Anaheim.

Robert Pinto
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Robert Pinto
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Andrew Salas, Chairman
Gabrieleño Band of Mission Indians – Kizh Nation
P.O. Box 393
Covina, CA 91723
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Mr. Salas:

Thank you for your interest in proposed development projects in the City of Anaheim.

Andrew Salas
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Andrew Salas
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Sandonne Goad, Chairperson
Gabrielino /Tongva Nation
106 ½ Judge John Aiso St., #231
Los Angeles, CA 90012
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Goad:

Thank you for your interest in proposed development projects in the City of Anaheim.

Sandonne Goad
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Sandonne Goad
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Anthony Morales, Chairperson
Gabrieleno / Tongva San Gabriel Band of Mission Indians P.O. Box 693
San Gabriel, CA 91778
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Morales:

Thank you for your interest in proposed development projects in the City of Anaheim.

Anthony Morales
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Anthony Morales
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Robert Dorame, Chairperson
Gabrielino Tongva Indians of California Tribal Council
P.O. Box 490
Bellflower, CA 90707
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Dorame:

Thank you for your interest in proposed development projects in the City of Anaheim.

Robert Dorame
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Robert Dorame
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Charles Alvarez
Gabrieleño-Tongva Tribe
23454 Vanowen Street
West Hills, CA 91307
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Mr. Alvarez:

Thank you for your interest in proposed development projects in the City of Anaheim.

Charles Alvarez
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Charles Alvarez
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Matias Belardes, Chairman
Juaneno Band of Mission Indians Acjachemen Nation - Belardes 32161 Avenida Los Amigos
San Juan Capistrano, CA 92675
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairman Belardes:

Thank you for your interest in proposed development projects in the City of Anaheim.

Matias Belardes
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Matias Belardes
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Javaughn Miller, Tribal Administrator
La Posta Band of Diegueno Mission Indians
8 Crestwood Road
Boulevard, CA 91905
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Tribal Administrator Miller:

Thank you for your interest in proposed development projects in the City of Anaheim.

Javaughn Miller
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Javaughn Miller
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Angela Elliott Santos, Chairperson
Manzanita Band of Kumeyaay Nation
P.O. Box 1302
Boulevard, CA 91905
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Santos:

Thank you for your interest in proposed development projects in the City of Anaheim.

Angela Elliott Santos
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
Angela Elliott Santos
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Michael Linton, Chairperson
Mesa Grande Band of Diegueno Mission Indians
P.O. Box 270
Santa Yabel, CA 92070
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Linton:

Thank you for your interest in proposed development projects in the City of Anaheim.

Michael Linton
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Michael Linton
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Shasta Gaughen, Tribal Historic Preservation Officer
Pala Band of Mission Indians
PMB 50, 35008 Pala Temecula Rd.

Pala, CA 92059
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Tribal Historic Preservation Officer Gaughen:

Thank you for your interest in proposed development projects in the City of Anaheim.

Shasta Gaughen
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Shasta Gaughen
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Lovina Redner, Tribal Chair
Santa Rosa Band of Cahuilla Indians
P.O. Box 391820
Anza, CA 92539
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Tribal Chair Redner:

Thank you for your interest in proposed development projects in the City of Anaheim.

Lovina Redner
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Lovina Redner
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
December 10, 2021
Isaiah Vivanco, Chairperson
Soboba Band of Luiseno Indians
P.O. Box 487
San Jacinto, CA 92581
Re: The DisneylandForward Project in the City of Anaheim – Notification per Assembly Bill 52 (AB 52) and Senate Bill 18 (SB 18)
Dear Chairperson Vivanco:

Thank you for your interest in proposed development projects in the City of Anaheim.

Isaiah Vivanco
December 10, 2021

Page 2 of 3 ends

Sincerely,
Andy Uk
Associate Planner
CC: [email protected]
Isaiah Vivanco
December 10, 2021

Page 3 of 3 ends

Figure 1: Project Location
City of Anaheim

PLANNING AND BUILDING DEPARTMENT
200 S. Anaheim Blvd.

Suite #162
Anaheim, CA 92805
Tel: (714) 765-5139
Fax: (714) 765-5280
www.anaheim.net
February 25, 2022

Andrew Salas, Chairman
Gabrieleño Band of Mission Indians – Kizh Nation
P.O. Box 393
Covina, CA 91723
By email: [email protected]
Subject: Assembly Bill 52/Senate Bill 18 Consultation Review for the DisneylandForward Project
Dear Mr. Salas:

Thank you for your consultation1 with City staff on February 08, 2022 and your email, dated February 18, 2022, with supplemental Gabrieleño Band of Mission Indians – Kizh Nation tribal cultural resource information for the DisneylandForward Project (Project).

The purpose of this letter is to confirm receipt of your email and the attached information.

The City will review information gathered from the February 08, 2022 consultation and subsequent email, pursuant to AB 52 and SB 18. City staff will be in contact with Gabrieleño Band of Mission Indians – Kizh Nation once additional information becomes available with respect to subsurface soils relevant to the Project. Please note that the Project’s CEQA environmental document and its mitigation measures are not considered final until they are adopted by the City Council.

If you would like additional information about this project, please contact Elaine Thienprasiddhi at 714-765-4568 or [email protected].

Sincerely,
Andy Uk
Associate Planner
Cc: Elaine Thienprasiddhi

1 Pursuant to the provisions of Assembly Bill 52, Senate Bill 18 and Section 21080.3.1 (b) of the Public Resources Code; “consultation” shall have the same meaning as provided in Section 65352.4 of the Government Code.

Appendix L-1
WSA

DisneylandForward Subsequent EIR
Water Supply Assessment
July 2023
Prepared for:

Walt Disney Parks & Resorts U.S., Inc.

Prepared by:
5 Hutton Centre Drive
Suite 300
Santa Ana, CA 92707
DisneylandForward Project Subsequent EIR Water Supply Assessment i July 2022

TABLE OF CONTENTS
EXECUTIVE SUMMARY ........................................................................................ ES-1 ES.1 Water Demand .............................................................................................. ES-4 ES.2 Water Supply ................................................................................................ ES-8 ES.3 Reliability of Water Supplies ...................................................................... ES-10 ES.4 Conclusion .................................................................................................. ES-10 1 INTRODUCTION.............................................................................................. 1-1

1.1 Water Supply Assessment (WSA) Purpose ..................................................... 1-1 2 LEGISLATION.................................................................................................. 2-1

2.1 SB 610 – Costa – Water Supply Planning ....................................................... 2-1

2.2 SB 1262 – Sustainable Groundwater Management Act .................................. 2-3 3 PROPOSED PROJECT .................................................................................... 3-1

3.1 Proposed Project Location ............................................................................... 3-1

3.2 Proposed Project Characteristics ...................................................................... 3-4

3.3 Project Water Demand ................................................................................... 3-11 4 CITY WATER SYSTEM .................................................................................. 4-1

4.1 City Water System Characteristics .................................................................. 4-1

4.2 City Water Demands ........................................................................................ 4-3

4.3 City Water Supply............................................................................................ 4-7 5 RELIABILITY OF WATER SUPPLIES ........................................................ 5-1

5.1 Factors Impacting Reliability ........................................................................... 5-2

5.2 City of Anaheim Reliability Measures ............................................................ 5-9

5.3 Normal, Dry Year and Multiple-Dry Year Supply Reliability ...................... 5-10 6 CONCLUSION .................................................................................................. 6-1 7 REFERENCES ................................................................................................... 7-1 DisneylandForward Project Subsequent EIR Water Supply Assessment ii July 2023
TABLES
Table ES-1 Allowed DLR Property Uses Under DRSP/ARSP ................................................ ES-3 Table ES-2 DLR Existing Water Demand ................................................................................ ES-4 Table ES-3 Project Water Demand ........................................................................................... ES-5 Table ES-4 Estimated Project Phasing of Water Demand ........................................................ ES-5 Table ES-5 2020 UWMP Projected City Water Demand ......................................................... ES-6 Table ES-6 Projected Normal City Water Demand .................................................................. ES-8 Table 3-1 Uses Currently Allowed Under DRSP/ARSP For Disney Properties ......................... 3-5 Table 3-2 Proposed Densities for Applicant Properties ............................................................... 3-7 Table 3-3 Estimated Project Phasing ......................................................................................... 3-10 Table 3-4 Existing Water Demand ........................................................................................... 3-11 Table 3-5 Estimated Project Water Demands ............................................................................ 3-12 Table 3-6 Estimated Project Phasing of Water Demand ........................................................... 3-13 Table 4-1 Historical City Water Demand .................................................................................... 4-4 Table 4-2 2020 UWMP Water Demand Projections ................................................................... 4-5 Table 4-3 RHNA and Planned Development Buildout Water Demand ...................................... 4-6 Table 4-4 RHNA and Planned Development Phasing and Demand Increase ............................. 4-6 Table 4-5 2020 UWMP and Planned Development Demand Increase Comparison ................... 4-7 Table 4-6 Historical City Water Supply ...................................................................................... 4-8 Table 4-7 Projected Normal City Water Supply ........................................................................ 4-15 Table 5-1 Metropolitan Regional Water Demands Single-Dry, Multiple-Dry and Average Years .............................................................................................................. 5-8 Table 5-2 City Projected Normal Year Water Supply and Demand .......................................... 5-11 Table 5-3 City Projected Single-Dry Year Water Supply and Demand .................................... 5-12 Table 5-4 City Projected Multiple-Dry Year Water Supply and Demand................................. 5-13 DisneylandForward Project Subsequent EIR Water Supply Assessment iii July 2023

FIGURES
Figure ES-1 – Project Location Map ........................................................................................ ES-2 Figure ES-2 - Historical and Projected City Per Capita Water Demand .................................. ES-7 Figure 3-1 – Local Vicinity.......................................................................................................... 3-2 Figure 3-2 – Existing ARSP Disney-owned or Controlled Properties ........................................ 3-3 Figure 3-3 – Proposed DRSP and ARSP Development Districts and Overlays .......................... 3-9 Figure 4-1 - Anaheim Public Utilities Major Facilities & Service Area ..................................... 4-2

APPENDICES
Appendix A Planned Development Phasing and Demand
Appendix B City of Anaheim Ordinance No. 6332
DisneylandForward Project Subsequent EIR Water Supply Assessment iv July 2023

ABBREVIATIONS/ACRONYMS
AF Acre-feet
AFY Acre-feet per year
APU City of Anaheim Public Utilities
ARSP Anaheim Resort Specific Plan
ARTIC Anaheim Regional Transportation Intermodal Center BEA Basin Equity Assessment
BPP Basin Production Percentage
CDR Center for Demographic Research
CEQA California Environmental Quality Act
CGBC California Green Building Standards Code
City, Anaheim City of Anaheim
CRA Colorado River Aqueduct
CVP Central Valley Project
Delta Sacramento-San Joaquín River Delta
DLR Disneyland Resort
DRSP Disneyland Resort Specific Plan
DU Dwelling Unit
DWR California Department of Water Resources
EIR Environmental Impact Report
EIS Environmental Impact Statement
FY Fiscal Year
gpd Gallons per day
gpd/ksf Gallons per day per thousand square feet
gpcd Gallons per Capita per Day
GSP Groundwater Sustainability Plan
GWRS Groundwater Replenishment System
HGL Hydraulic grade line
IRP Integrated Resources Planning
ksf Thousand square feet
MAF Million acre-feet
Metropolitan, MWD Metropolitan Water District of Southern California MG Million gallons
MGD Million gallons per day
MWDOC Municipal Water District of Orange County
MWELO Model Water Efficient Landscape Ordinance
OC Orange County
OC Basin Orange County Groundwater Basin
OCSD Orange County Sanitation District
OCWD Orange County Water District
QSA Quantification Settlement Agreement
RA Replenishment Assessment
SAR Santa Ana River
SB Senate Bill
SEIR Supplemental Environmental Impact Report
sf Square feet
SWP State Water Project
SWRCB State Water Resources Control Board
UWMP Urban Water Management Plan
WSA Water Supply Assessment
WSAP Water Supply Allocation Plan
DisneylandForward Project Subsequent EIR Water Supply Assessment ES-1 July 2023

EXECUTIVE SUMMARY
This Water Supply Assessment (WSA) has been prepared for the DisneylandForward (Project) Subsequent Environmental Impact Report (SEIR), in accordance with applicable sections of the California Public Resources Code and California Water Code as referenced in Senate Bill (SB) 610. Section 2.1 defines what constitutes a Project under SB 610 (i.e., a proposed hotel or motel, or both, having more than 500 rooms).

Walt Disney Parks and Resorts U.S., Inc. (the Applicant, Disney) proposes DisneylandForward to allow for the continued and long-term growth of The Disneyland Resort (DLR). The Project would allow the transfer of previously approved uses to other properties owned by Disney (Disney Properties) in the Disneyland Resort Specific Plan (DRSP) and Anaheim Resort Specific Plan (Disney ARSP Properties). The areas governed by the DRSP and the ARSP are located within an area of the City of Anaheim known as The Anaheim Resort, which encompasses approximately 1,078 acres generally located adjacent to and southwest of Interstate 5 (I-5) between Ball Road to the north, Walnut Street to the west, and Chapman Avenue to the south, as shown on Figure ES1.

Existing land uses within the area governed by the DRSP consist of Disneyland, Downtown Disney, Disney California Adventure Park, Disney’s Grand Californian Hotel & Spa, Disneyland Hotel, Disney administration offices, back-of-house uses, and parking lots/structures owned or controlled by Disney as well as hotels, motels, retail centers, rental car offices, and convenience stores owned by third parties. Existing land uses within the Disney ARSP Properties are surface parking lots, an office building, and the Paradise Pier Hotel and associated parking structure. Uses currently allowed under the DRSP and ARSP for properties owned or controlled by Disney as well as existing levels of development are shown in Table ES-1.

EIR No. 311 analyzed the environmental impacts of The Disneyland Resort Project, including the DRSP, which the City certified in 1993 along with the adoption of Mitigation Monitoring Program No. 0067. This analysis included an evaluation of future water supply needs resulting from buildout of The Disneyland Resort Project. The City’s approval of EIR No. 311 pre-dated WSA requirements as referenced in SB 610.

EIR No. 313 analyzed the environmental impacts of the ARSP and was certified by the City in 1994, along with the adoption of Mitigation Monitoring Program No. 85C. In December 2012, the Anaheim City Council certified Supplemental Environmental Impact Report No. 340 (SEIR No. 340) in support of the approval of the Amendment No. 14 to the ARSP Project. A WSA was prepared and approved as part of SEIR No. 340 (Psomas, 2009). That WSA identified sufficient and reliable water supply for the City to meet the water demands resulting from overall City-wide growth plus additional demands resulting from buildout of the ARSP under normal year, singledry year, and multiple-dry year conditions over a 20-year projection.

The purpose of this WSA is to verify there is sufficient City water supply for the Project in addition to other City water demands projected through the year 2045. This WSA estimates the additional water demand that would result from development of Disney’s remaining entitled uses under the DRSP and ARSP, as shown in Table ES-1, and analyzes the impact on the City’s water supply.

The Project does not change the amount of allowed development within the Project site allowed under The Disneyland Resort Project and the ARSP Project but rather allows the transfer of previously approved uses to other Disney Properties in the Project site. As such, the projected ! ! ! ! ! !
!
! ! ! ! ! ! ! ! !
W Katella Ave
Disney Way
Manchester Ave
Clementine St
Gene Autry Way Convention Way
Disneyland Drive
Magic Way
East St
Haster St
West St
Orangewood Ave
Ninth St
Walnut St
Cerritos Ave
Chapman Ave
Harbor Blvd
Anaheim Blvd
E Katella Ave
S Walnut St
W Ball Rd
Vermont Ave
Manchester Ave
§¨5
H a rb or B lvd
Chapman Ave
Anaheim Blvd
E Ball Rd
Anaheim Way
D:\Projects\3WDI\000400\MXD\EIR\3rd_City_Review\ex_Aerial_20230302.mxd ²
Aerial Photograph Exhibit 3-3
1,500 750 0 1,500
Feet
Project Site
! !
Designated for Future Extension in General
Plan Circulation Element
Specific Plan Areas
Disneyland Resort Specific Plan (SP92-1)
Anaheim Resort Specific Plan (SP92-2)
Hotel Circle Specific Plan (SP93-1)
DisneylandForward Subsequent EIR
(Rev: 3-27-2023 JVR) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_Aerial.pdf Aerial Source: City of Anaheim Open Data, 2021
Figure ES-1
DisneylandForward Project Subsequent EIR Water Supply Assessment ES-3 July 2023
Table ES-1
Allowed DLR Property Uses Under DRSP/ARSP
Disney DRSP Property Maximum Allowable
Development Under DRSP Existing Development Remaining Entitlement Hotel District Uses (97 acres)
Hotel Rooms 5,600 hotel rooms 2,342 hotel rooms 3,258 hotel rooms Hotel Retail/Restaurant 300,000 sf 159,549 sf 140,451 sf Hotel Meeting Space 200,000 sf 161,220 sf 38,780 sf
Parking Spaces 9,930 spaces 5,885 spaces 4,045 spaces
Theme Park District (292 acres)
Theme Park 6,850,000 sf 3,192,885 sf 3,657,115 sf
Administration Building 475,000 sf 305,430 sf 169,570 sf Administration Building
Parking 2,300 spaces 1,545 spaces 755 spaces
Parking District (57.1 acres)
East Parking Area 17,600 spaces 2,179 spaces 15,421 spaces West Parking Area 16,700 spaces 16,298 spaces 402 spaces Future Expansion District (24.7 acres)
Parking Area 5,100 spaces 2,529 spaces 2,571 spaces
Disney ARSP Properties Maximum Allowable
Development Under ARSP Existing Development Remaining Entitlement C-R District Uses (75.4 acres)
1515 S. Manchester Ave
1,116 hotel rooms (75
rooms per gross acre or 75
rooms per lot or parcel,
whichever is greater)
Cast Member parking (1,261
spaces – temporary parking
lot initially approved on May
8, 2019, and an
approximately 67,424-
square foot office building
1,116 hotel rooms
1585 S. Manchester Ave
1530 S. Harbor Blvd (14.88
acres)
1900 S. Harbor Blvd (44.66
acres)
3,348 hotel rooms (75
rooms per gross acre or 75
rooms per lot or parcel,
whichever is greater)
Toy Story Parking Lot (4,635
spaces-temporary parking lot
approved through June 26,
2024)
3,348 hotel rooms
333 W. Ball Road (10.69
acres)
534 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever
is greater)
Cast Member parking (1,324
spaces) 534 hotel rooms
1717 S. Disneyland Drive
(5.15 acres)
564 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever
is greater)
Paradise Pier Hotel (489
rooms and approximately
17,619 square feet in
ancillary commercial uses)
45 hotel rooms
water demand related to future growth will remain unchanged due to the Project. Regardless, the remaining entitlement under the DRSP and ARSP will result in additional water demands from current water demand and the Applicant has requested the preparation of a WSA to determine sufficient water supply from the City.

DisneylandForward Project Subsequent EIR Water Supply Assessment ES-4 July 2023
ES.1 Water Demand
Project Water Demand
Metered water consumption (demand) was provided by the City for fiscal years (FY) 2018 and 2019. These years were used to evaluate existing demand prior to the pandemic when the DLR was in full operation. FY 2019 had the highest demand and was selected to represent existing demand and used to project future demands related to Project buildout. The metered data was separated by major DLR property area; Disneyland Park (DLP), Disney’s California Adventure Park (DCA), Downtown Disney (DTD), Disneyland Hotel (DLH), Grand Californian Hotel (GCH), Paradise Pier Hotel (PPH), and other “Shared” uses located outside of these areas which include surface lots, fire water meters, and irrigation of street medians and parkways. Metered water consumption for FY 2019 is summarized in Table ES-2. The water demand for existing land uses within the Project site was accounted for in the existing demand reported in the City’s 2020 Urban Water Management Plan (UWMP), along with future demand projected through fiscal year (FY) 2045. The existing demand presented in Table ES-2 of 2.37 million gallons per day (MGD) equates to an existing annual use of 2,656 acre-feet per year (AFY).

Table ES-2
DLR Existing Water Demand
Use
FY 2019
Demand
(gpd)
FY 2019
Demand
(AFY)
Existing
Quantity Units
Factor
(gpd/unit)
Theme Park(1) 1,567,851 1,756 3,193 ksf 491
Downtown Disney(2) 90,420 101 247 ksf
Hotel 552,024 618 2,831 rooms 195
Shared 160,898 180
Total 2,371,193 2,656
(1) Estimated 121,500 gpd for TDA subtracted from Theme Park demand data. TDA demand taken from EIR 311 based on 270 gpd/ksf for office, cafeteria, and health club. (2) Existing square-footage is only partially occupied and included in Theme Park District Retail/Entertainment land use.

Unit water use factors were developed to estimate water demand for future DLR expansion based on the FY 2019 consumption by use type and existing development shown in Table ES-2. Factors were calculated for Theme Park uses, a portion of which may be used for retail and entertainment, and hotel uses, which includes associated retail, restaurant, and meeting spaces. These uses were grouped based on the meter data available. The resulting demand factors are included in Table ES2 and projected water demand for Project remaining entitled uses shown in Table ES-3.

DisneylandForward Project Subsequent EIR Water Supply Assessment ES-5 July 2023
Table ES-3
Project Water Demand
Remaining Entitlement
Remaining
Entitlement Units
Factor
(gpd/unit)
Demand
gpd afy
Theme Park 3,657 ksf 491 1,795,809 2,012
Retail/Entertainment(1) 103 ksf 0
DRSP Hotel 3,258 rooms 195 635,310 712
ARSP Hotel 5,043 rooms 195 983,385 1,102
Total 3,414,504 3,825
(1) Acreage included in Theme Park. Allowed theme park area that may be used as retail, dining, and entertainment.

Based on the estimated development phasing, demand phasing is shown in Table ES-4. The Project will be implemented in multiple phases over the next 30 years or more. The time frame for future development of the Project site would be controlled by market forces and determined by the Applicant and third-party owners of the parcels within the Project site. It is conservatively assumed for this WSA that Project buildout will occur by 2045, within the WSA planning period. Project phasing will begin after 2025 with the initial phase assumed to be completed by 2030, consisting of all hotel uses and 40 acres of theme park uses. This initial phase estimate is made to be consistent with the Project’s Subsequent EIR assumptions for air quality and construction phasing. The remaining theme park uses are then phased equally at 5-year increments out to 2045.

Table ES-4
Estimated Project Phasing of Water Demand
Phasing 2025 2030 2035 2040 2045
Land Use
Theme Park (ksf)(1) 0 646 1,650 2,653 3,657
Hotel (rooms)(2) 0 8,301 8,301 8,301 8,301
Water Demand (afy)
Theme Park 0 355 907 1,459 2,012
Hotel 0 1,813 1,813 1,813 1,813
Total(3) 0 2,169 2,721 3,273 3,825
(1) Initial Park use phase of 40 acres (at 16,155 sf/ac) by 2030 with remainder spread equally to 2045. (2) All hotel use assumed completed by 2030. No development by 2025. (3) Project water demand increase not including water loss.

City Water Demand
City water demands were developed and projected in the City’s 2020 UWMP. The City’s total water use in FY 2020 was 56,912 AF, an 8.3 percent decrease from FY 2015 water use reported in the previous 2015 UWMP. The water demand forecast was carried out in coordination with Municipal Water District of Orange County (MWDOC) and Orange County Water District DisneylandForward Project Subsequent EIR Water Supply Assessment ES-6 July 2023
(OCWD) as a regional effort and calculated by CDM Smith (2020). Demand projections were based on existing use data as well as projected land use, population, economic growth, and future passive and active conservation measures (baseline conservation). FY 2020 and projected City water demands are shown in Table ES-5. All projected demands include an estimated 4.85 percent in water loss or non-revenue water consistent with the 2020 UWMP.

Table ES-5
2020 UWMP Projected City Water Demand
2020 2025 2030 2035 2040 2045
UWMP Water Demand Projections (AFY)
SF Housing 20,098 20,374 20,012 19,664 19,303 19,229
MF Housing 11,374 12,523 12,545 12,963 13,437 14,051
Other Potable (CII) 20,912 22,794 26,778 28,117 29,523 29,523 Large Landscape (Golf Course) 349 350 350 350 350 350
Total Potable Demand 52,733 56,041 59,685 61,094 62,613 63,153 Losses 3,282 2,717 2,895 2,964 3,038 3,064
Fire/Temp 796

4.85% 4.85% 4.85% 4.85% 4.85%
Recycled Water 101 120 120 120 120 120
Total Demand 56,912 58,878 62,700 64,178 65,771 66,337
Southern California’s urban water demand has been largely shaped by the efforts to comply with The Water Conservation Act of 2009, also known as Senate Bill (SB) X7-7. SB X7-7, signed into law on February 3, 2010, required the State of California to reduce urban water use by 20 percent by the year 2020. The City has been actively engaged in efforts to reduce water use in its service area and has met the final 2020 water use target as documented in the 2020 UWMP. This was critical to ensure the City’s eligibility to receive future state water grants and loans.

In April 2015, Governor Brown issued an Executive Order as a result of one of the most severe droughts in California’s history, requiring a collective reduction in statewide urban water use of 25 percent by February 2016, with each agency in the state given a specific reduction target by DWR. In response to the Governor’s mandate, the City adopted Ordinance No. 6332, on May 19, 2015, establishing provisions against water waste and implementing higher (more restrictive) stages of water conservation to achieve its demand reduction target of 20 percent. The City was able to meet the mandated water use reduction from June 2015 through February 2016.

In 2018, Governor Brown signed into law the water conservation bills AB 1668 and SB 606. These bills were a result of an Executive Order from the Governor during the recent drought which required State agencies to develop and recommend a long-term water conservation framework to ensure adequate water supplies for the State now and in the future. The two bills establish guidelines for efficient water use and a framework for implementation and oversight of the new standards, which must be in place by 2022.

In response to the current drought, Governor Newsom signed Executive Order N-7-22 on March 28, 2022, after declaring states of emergency in April, May, July, and October of 2021 due to DisneylandForward Project Subsequent EIR Water Supply Assessment ES-7 July 2023
prolonged drought conditions. The purpose of the order is to help the State achieve conservation goals by implanting various water use reduction measures including the requirement that each water supplier implement shortage response actions for a shortage level of ten to twenty percent (a Level 2 shortage under Section 10632 of the Water Code).

Given these long-term water conservation goals, the current level of City conservation is expected to be maintained or exceeded. Projections use baseline conservation which assume the implementation of future passive measures affecting new developments, including the Model Water Efficient Landscape, plumbing code efficiencies for toilets, and expected plumbing code for high-efficiency clothes washers. It also assumes the implementation of future active measures for existing customers and the implementation of Metropolitan incentive programs at historical annual levels seen in Orange County. Figure ES-2 shows City historic and projected per capita water use based on data from the 2020 UWMP.

Figure ES-2 - Historical and Projected City Per Capita Water Demand The demand for the Project site existing land use (2,656 AFY), as detailed in Table ES-2 above, was included in the 2020 UWMP reported and projected water demand estimates. The net new water demand for the Project of 3,825 AFY was included in the 2020 UWMP demand forecast as previously approved development as part of the DRSP and ARSP. Other proposed development within the City was evaluated in this WSA to confirm that sufficient growth was accounted for in the UWMP for the combined development. Based on this analysis, the City water demand as estimated in the 2020 UWMP included sufficient increased demand to account for the combined proposed development in the Project site and other areas within the City. The demand increase DisneylandForward Project Subsequent EIR Water Supply Assessment ES-8 July 2023
from the Project in FY 2045 is projected to be 6.0 percent of the total demand estimated for the City.

Projected normal year City water demand through FY 2045 is shown in Table ES-6 as reported in the 2020 UWMP, with Project water demand shown separately. All demands include an estimated

4.85 percent in water loss or non-revenue water consistent with the 2020 UWMP.

Table ES-6
Projected Normal City Water Demand (AF)
Demand(1) 2025 2030 2035 2040 2045
Total City Demand without Project(2) 58,878 60,426 61,325 62,340 62,327 Project Demand(3) 0 2,274 2,853 3,431 4,010
Total Demand 58,878 62,700 64,178 65,771 66,337
(1) All normal-year demands include 4.85% non-revenue water (water loss) consistent with City's 2020 UWMP.
(2) Normal year demand based on the City's 2020 UWMP excluding new Project demand resulting from remaining DLR entitled uses.
(3) Projected Project demand resulting from remaining DLR entitled uses including 4.85% projected water loss
ES.2 Water Supply
The City relies on a combination of imported water, local groundwater, and recycled water to meet its water needs. The City works together with two primary agencies, Metropolitan Water District of Southern California (Metropolitan or MWD) and OCWD to ensure a safe and reliable water supply that will continue to serve the community in periods of drought and shortage. The sources of imported water supplies include the Colorado River and the State Water Project (SWP) provided by Metropolitan.

The City’s main source of water supply is groundwater from the Orange County Groundwater Basin (OC Basin). The City has historically relied on approximately 70 percent groundwater (previous 10-year average) and 30 percent imported water under normal conditions. Over the 25- year planning period of the 2020 UWMP, groundwater supplies are anticipated to increase to between 80 and 85 percent of total water use. Over the next several years, however, groundwater supply will be reduced while the City constructs groundwater treatment facilities to treat for a group of chemicals referred to as per- and polyfluoroalkyl substances (PFAS). Recycled water represents less than 0.2 percent of the City’s total water supply.

Groundwater Supply
Local groundwater from the OC Basin has been the least costly and most reliable source of supply for the City. The City has historically relied on the OC Basin for approximately 70 percent of its supply over the previous ten years. The City operates 18 active groundwater wells to supply potable water to its customers. Recently, the City has taken 14 wells out of service due to water quality concerns related to contaminants known as PFAS. The City is implementing a new Groundwater Treatment Program that will allow the City to remove PFAS to acceptable State mandated levels. It is anticipated that construction on this Groundwater Treatment Program will DisneylandForward Project Subsequent EIR Water Supply Assessment ES-9 July 2023
be completed, and all wells will be back on-line by the end of 2023, keeping long-term costs low for customers while also providing high quality drinking water and maintaining a high degree of water supply reliability.

The OC Basin is managed by the OCWD. Pumping from the Basin is managed through a process that uses financial incentives to encourage groundwater producers to pump a sustainable amount of water. The framework for the financial incentives is based on establishing the Basin Production Percentage (BPP), the percentage of each Producer’s total water supply that comes from groundwater pumped from the Basin. Groundwater production at or below the BPP is assessed a Replenishment Assessment (RA), while pumping above the BPP is assessed a Basin Equity Assessment (BEA) in addition to the RA, which is calculated based on Metropolitan's (imported water) rates.

Resolution No. 13-1-6, adopted on January 16, 2013 by the OCWD Board of Directors, stated the District’s goal to develop the necessary supplies and facilities to achieve and maintain a 75 percent BPP, long-term. OCWD’s transition to the 75 percent BPP was due to construction of the Groundwater Replenishment System (GWRS) Initial Expansion Project, which was completed in 2015. This expansion provided an additional 31,000 AFY of water for recharging the groundwater basin. OCWD is in the final stages of constructing a final expansion to increase GWRS treatment capacity to 130 MGD. Currently the BPP is set at 77 percent and with the final expansion of the GWRS to be completed by 2023. It is anticipated that the BPP will increase to as much as 85%, with 82% assumed in the 2020 UWMP for the planning period from 2025 through 2045.

Imported Water Supply
The City of Anaheim is one of only three retail member agencies of Metropolitan in Orange County. As a member agency, pursuant to the Metropolitan Act, the City has preferential rights to a certain percentage of water delivered to Metropolitan each year primarily from the State Water Project and/or the Colorado River Aqueduct as well as other Metropolitan supply/storage programs. Being a member agency of Metropolitan puts the City in a better position relative to receiving water directly from Metropolitan, as opposed to other agencies in Orange County which obtain their imported Metropolitan water through MWDOC.

Metropolitan’s 2020 UWMP was developed as part of the 2020 Integrated Water Resources Plan (IRP) planning process. The IRP represents Metropolitan’s comprehensive blueprint for long-term water reliability, including key supply development and water use efficiency goals. The planning and agency coordination for both the UWMP and IRP are carried out concurrently. The 2020 IRP update describes the core water resources that will be used to meet full-service demands at the retail level under foreseeable hydrologic conditions from 2020 through 2045. The foundation of Metropolitan’s resource strategy for achieving regional water supply reliability has been to develop and implement water resources programs and activities through its IRP preferred resource mix. This preferred resource mix includes conservation, local resources such as water recycling and groundwater recovery, Colorado River supplies and transfers, SWP supplies and transfers, inregion surface reservoir storage, in-region groundwater storage, out-of-region banking, treatment, conveyance, and infrastructure improvements.

DisneylandForward Project Subsequent EIR Water Supply Assessment ES-10 July 2023
ES.3 Reliability of Water Supplies
As discussed above, the primary source of water for the City is the OC Basin. OCWD is responsible for the protection of water rights to the Santa Ana River in Orange County as well as the management and replenishment of the Basin. OCWD replenishes and maintains the Basin at safe levels while increasing the Basin’s annual yield by utilization of the best available technology.

Other than recycled water, OCWD primarily recharges the Basin with water from the Santa Ana River and to a lesser extent with imported raw water purchased from Metropolitan.

OCWD continues to develop new replenishment supplies, recharge capacity, and basin protection measures to meet projected production from the OC Basin during average/normal rainfall, during drought periods, and in planning for climate change. The most significant enhancement to OC Basin supply capability is the expansion of the GWRS that recharges recycled water into the OC Basin. Over the 25-year planning period, groundwater supplies are anticipated to increase from 77 percent to between 80 and 85 percent of total water use.

Metropolitan’s 2020 UWMP finds that Metropolitan can meet, full-service demands of its member agencies from 2020 through 2045 during normal years, single dry year, and multiple dry years.

In addition to the City’s groundwater and imported supplies, the City recycles a small portion of wastewater at the downtown Water Recycling Facility. A recycled water supply of 120 AFY is projected in the 2020 UWMP for the Plan period through 2045.

City water demand estimates for normal year, single-dry year, and multiple dry years through FY 2045 are estimated in the City’s 2020 UWMP and are compared with projected available groundwater and imported water supplies. Demands for single dry-year and five consecutive multidry year scenarios were increased based on historical hydrology from MWDOC and Metropolitan, consistent with the City’s 2020 UWMP. It is assumed that demands estimated for the Project and other proposed projects within the planning period of this WSA are included in the 2020 UWMP demand projections.

The City is projected to have sufficient imported and groundwater supplies to meet normal year, single-dry year, and multiple-dry year conditions. Over the 20-year planning period, groundwater supplies are anticipated to increase from 77 percent to between 80 and 85 percent of total water use due to the expansion of OCWD’s Groundwater Replenishment System (GWRS) which recharges recycled water into the OC Basin. With the expansion of the GWRS to be completed by 2023, an estimated BPP of 82% is assumed in the 2020 UWMP for the period from 2025 through 2045.

ES.4 Conclusion
The estimated buildout water supply requirement for the Project is projected to be 4,010 AFY.

This is approximately 6.0 percent of the total City supply requirement estimated for FY 2045 in the City’s 2020 UWMP.

DisneylandForward Project Subsequent EIR Water Supply Assessment ES-11 July 2023
The City is projected to have sufficient imported and groundwater supplies to meet normal year, single-dry year, and multiple-dry year conditions including new Project demands and new demands from other planned development within the planning period because:

1. Metropolitan has projected supply surpluses for each of these conditions

2. The City can increase groundwater production consistent with their available well capacity, if needed
The information included in this WSA identifies a sufficient and reliable water supply for the City, now and into the future, including a sufficient water supply for approved Project uses. These supplies are also sufficient to provide for overall City-wide growth at the rate projected in the City’s 2020 UWMP and this WSA.

DisneylandForward Project Subsequent EIR Water Supply Assessment 1-1 July 2023
1 INTRODUCTION
To allow continued, long-term growth of The Disneyland® Resort, The Walt Disney Company through Walt Disney Parks and Resorts U.S., Inc. (Disney) proposes the DisneylandForward (Project). The Project would allow the transfer of previously approved uses to other properties owned by Disney (Disney Properties) in the Disneyland Resort Specific Plan (DRSP) and Anaheim Resort Specific Plan (Disney ARSP Properties). The Project also would provide for future administrative review by the City of Anaheim (City) of the Applicant’s development projects within the DRSP and ARSP areas. The areas governed by the DRSP and the ARSP are located within an area of the City of Anaheim known as The Anaheim Resort®, which encompasses approximately 1,078 acres generally located adjacent to and southwest of Interstate 5 (I-5) between Ball Road to the north, Walnut Street to the west, and Chapman Avenue to the south.

The Project is located within areas governed by the DRSP and ARSP. The Project proposes to modify the limits of District boundaries in the DRSP, to rename Districts within the DRSP, and to allow Overlays within the Disney ARSP Properties. The Project would require approval of an amendment to the Land Use Element of the City’s General Plan to describe the Project’s amended District names, new Overlays and associated density.

1.1 Water Supply Assessment (WSA) Purpose
The purpose of this WSA is to provide information that verifies sufficient City water supply accounting for the estimated water demand of the Project in addition to other existing and planned future uses of the identified water supply for a planning period through the year 2045. This WSA estimates the additional water demand required to serve remaining approved land uses within the Project boundary.

DisneylandForward Project Subsequent EIR Water Supply Assessment 2-1 July 2023
2 LEGISLATION
According to the Guidebook for Implementation of Senate Bill (SB) 610 and SB 221 Water Code Section 10912, a “Project” requiring a WSA is defined by any of the following criteria:

1. A proposed residential development of more than 500 dwelling units (DU)

2. A proposed shopping center or business establishment employing more than 1,000 persons or having more than 500,000 square feet (sf) of floor space

3. A proposed commercial office building employing more than 1,000 persons or having more than 250,000 square feet of floor space

4. A proposed hotel or motel, or both, having more than 500 rooms

5. A proposed industrial, manufacturing, or processing plant, or industrial park planned to house more than 1,000 persons, occupying more than 40 acres of land, or having more than 650,000 sf of floor space

6. A mixed-use project that includes one or more of the projects specified in this subdivision

7. A project that would demand an amount of water equivalent to, or greater than, the amount of water required by a 500 DU project
The Project would include development of up to 8,301 hotel rooms and 3.66 million square feet of theme park uses as part of Disney’s remaining DRSP and ARSP entitlements. These uses were previously approved with the approval of The Disneyland Resort Project in 1993 and the approval of the ARSP Project in 1994, before state law required the preparation of a WSA. As such, the Applicant is voluntarily preparing this WSA as part of Project environmental documentation.

Senate Bill 221 does not apply to the Project.

2.1 SB 610 – Costa – Water Supply Planning
SB 610 was chaptered into law on October 9, 2001. It mandates that a city or county approving certain projects subject to CEQA (i) identify any public water system that may supply water for the project, and (ii) request those public water systems to prepare a specified water supply assessment. The assessment is to include the following:

1. A discussion of whether the public water system’s total projected water supplies available during normal, single-dry, and multiple-dry water years during a 20-year projection will meet the projected water demand associated with the proposed project, in addition to the public water system’s existing and planned future uses, including agricultural and manufacturing.

2. The identification of existing water supply entitlements, water rights, or water service contracts relevant to the identified water supply for the proposed project and water received in prior years pursuant to those entitlements, rights, and contracts.

3. A description of the quantities of water received in prior years by the public water system under the existing water supply entitlements, water rights, or water service contracts.

4. A demonstration of water supply entitlements, water rights, or water service contracts by the following means:

DisneylandForward Project Subsequent EIR Water Supply Assessment 2-2 July 2023
a. Written contracts or other proof of entitlement to an identified water supply. b. Copies of a capital outlay program for financing the delivery of a water supply that has been adopted by the public water system.
c. Federal, state, and local permits for construction of necessary infrastructure associated with delivering the water supply.
d. Any necessary regulatory approvals that are required to be able to convey or deliver the water supply.

5. The identification of other public water systems or water service contract holders that receive a water supply or have existing water supply entitlements, water rights, or water service contracts, to the same source of water as the public water system.

6. If groundwater is included for the supply for a proposed project, the following additional information is required:
a. Review of any information contained in the Urban Water Management Plan (UWMP) relevant to the identified water supply for the proposed project. b. Description of any groundwater basin(s) from which the proposed project will be supplied. Adjudicated basins must have a copy of the court order or decree adopted and a description of the amount of groundwater the public water system has the legal right to pump. For non-adjudicated basins, information on whether the DWR has identified the basin as over-drafted or has projected that the basin will become over-drafted if present management conditions continue, in the most current bulletin of DWR that characterizes the condition of the basin, and a detailed description of the efforts being undertaken in the basin to eliminate the long-term overdraft condition. c. Description and analysis of the amount and location of groundwater pumped by the public water system for the past five years from any groundwater basin which the proposed project will be supplied. Analysis should be based on information that is reasonably available, including, but not limited to, historic use records. d. Description and analysis of the amount and location of groundwater projected to be pumped by the public water system from any groundwater basin by which the proposed project will be supplied. Analysis should be based on information that is reasonably available, including, but not limited to, historic use records. e. Analysis of the sufficiency of the groundwater from the basin(s) from which the proposed project will be supplied.

The WSA shall be included in any environmental document prepared for the Project. The assessment may include an evaluation of any information included in that environmental document. A determination shall be made whether the projected water supplies will be sufficient to satisfy the demands of the project, in addition to existing and planned future uses.

Additionally, SB 610 requires new information to be included as part of an UWMP if groundwater is identified as a source of water available to the supplier. Information must include a description of all water supply projects and programs that may be undertaken to meet total projected water use. SB 610 prohibits eligibility for funds from specified bond acts until the plan is submitted to the State.

DisneylandForward Project Subsequent EIR Water Supply Assessment 2-3 July 2023

2.2 SB 1262 – Sustainable Groundwater Management Act
State Senate Bill 1262 adopted in September 2016 amends Section 66473.7 of the Government Code to require WSAs to address certain elements regarding groundwater sustainability if the project relies in whole or in part on groundwater as a source of supply.

For this WSA, the portions of SB 1262 that are applicable are as follows:

For a basin that has not been adjudicated that is a basin designated as high- or medium-priority pursuant to Section 10722.4, information regarding the following should be provided:
• Whether the California Department of Water Resources (DWR) has identified the basin as being subject to critical conditions of overdraft pursuant to Section 12924. • If a groundwater sustainability agency has adopted a groundwater sustainability plan or has an approved alternative, a copy of that alternative or plan.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-1 July 2023
3 PROPOSED PROJECT
To allow continued, long-term growth of The Disneyland® Resort, The Walt Disney Company through Walt Disney Parks and Resorts U.S., Inc. (Disney) proposes the DisneylandForward (Project). The Project would allow the transfer of previously approved uses to other properties owned by Disney (Disney Properties) in the Disneyland Resort Specific Plan (DRSP) and Anaheim Resort Specific Plan (Disney ARSP Properties).. The Project would not increase the amount of development square footage or hotel rooms currently allowed in the DRSP and analyzed in Environmental Impact Report No. 311, which the City certified in 1993. The Project would provide for future administrative review by the City of Anaheim (City) of Disney’s development projects on Disney Property.

3.1 Proposed Project Location
The Project site is located entirely within the City of Anaheim in Orange County, California, approximately 35 miles southeast of downtown Los Angeles and seven miles northwest of Santa Ana, in central Orange County, California. As depicted in Figure 3-1, Local Vicinity, the Project site is generally located adjacent to and southwest of the Interstate 5 (I-5), between Ball Road to the north, Walnut Street to the west, and Chapman Avenue to the south.

The Project Site is located within an area known as The Anaheim Resort®, a 1,078-acre portion of the City especially designated by the City's General Plan for Commercial Recreation land uses and which is intended to provide for tourist and entertainment-related industries, such as theme parks, hotels, tourist-oriented retail, movie theaters, and other visitor-serving facilities. The Anaheim Resort includes the following three specific plan areas: DRSP (489.7 acres), ARSP (581.3 acres) and Hotel Circle Specific Plan No. 93-1 (HCSP) (6.8 acres), and the Project Site is located within areas regulated by the DRSP and the ARSP.

The Project Site encompasses The Disneyland Resort, including the existing Theme Park, Hotel, Parking and Future Expansion Districts, and the Disney ARSP Properties, which are listed below:
• 1515 S. Manchester Avenue (currently used as the Manchester Cast Member Lot); • 1585 S. Manchester Avenue (currently occupied by a vacant office building and also used as the Manchester Cast Member Lot);
• 1530 S. Harbor Boulevard (currently used as the Manchester Cast Member Lot); • 1900 S. Harbor Boulevard (currently used as the Toy Story Parking Lot); • 333 W. Ball Road (currently used as the Harbor Cast Member Lot); and • 1717 S. Disneyland Drive (Paradise Pier Hotel)
These Disney ARSP Properties, shown on Figure 3-2, will be considered to be part of The Disneyland Resort Project as modified by the DisneylandForward Project with approval of the Project.
! ! ! ! !
! ! ! ! ! ! !
Katella Ave
Disney Way
Manchester Ave
Clementine St
Convention Way Gene Autry Way
Disneyland Drive
Magic Way
South St
Vermont Ave
East St
Haster St
West St
Orangewood Ave
Ninth St
Walnut St
§¨5
The City Dr
Harbor Blvd
Chapman Ave
Anaheim Blvd
Ball Rd
Anaheim Way
D:\Projects\3WDI\000400\MXD\EIR\3rd_City_Review\ex_LV_Existing_SP_Designations_20230302.mxd ²
Local Vicinity and Existing Specific Plan Designations Exhibit 3-2 2,000 1,000 0 2,000
Feet
Project Site
! ! Designated for Future Extension in General Plan Circulation Element Specific Plan Areas
Disneyland Resort Specific Plan (SP92-1)
Anaheim Resort Specific Plan (SP92-2)
Hotel Circle Specific Plan (SP93-1)
DisneylandForward Subsequent EIR
(Rev: 4-04-2023 JVR) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_LV_Existing_SP_Designations.pdf Figure 3-1
Exhibit 3-4
DisneylandForward Subsequent EIR
DRSP and Disney ARSP Properties
(05/172023 SAK) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_DRSP_Disney_ARSP_Properties.pdf D:\Projects\3WDI\000400\GRAPHICS\EIR\3rd_City_Review\ex_Existing_Properties_20230517.ai City of
Orange
Gene Autry Way
Manchester Ave
Clementine St
Zeyn St

CITY BOUNDARY
Wilkin Way
Walnut St
West Pl
Ox Rd
Ana
he
m i Blvd
West St
Disney Way
Harbor Blvd
Disneyland Dr
Magic Way
Cast Pl
East
Parking
Area
West
Parking
Area
City of
Anaheim
City of
Anaheim
City of
Garden Grove
City of
Orange
Orangewood Ave
Vermont Ave
Anaheim Blvd
Chapman Ave
Cerritos Ave
Katella Ave
Cerritos Ave
Katella Ave

CITY BOUNDARY

CITY BOUNDARY
West St
Haster St
Ball Rd Ball Rd Walnut St
9th St
§¨¦5
Manchester Ave
Convention Way
CA Adventure
Theme Park
Disneyland
Theme Park
Anaheim
Convention Center

HARBOR CAST MEMBER LOT
333 West Ball Rd

MANCHESTER CAST MEMBER LOT
1530 South Harbor Blvd
1515 South Manchester Ave
1585 South Manchester Ave

TOY STORY PARKING LOT
1900 South Harbor Blvd

PARADISE PIER HOTEL
1717 South Disneyland Dr
0 750 1,500
Feet
City Boundary
LEGEND Notes/Sources
°
The Anaheim Resort
Boundary
The Disneyland Resort
Specific Plan Boundary
City Legal Lot Data, 2022 Disney ARSP Properties City Boundary Data, 2022

PROJECT SITE
Designated for Future
Extension in General
Plan Circulation Element
Figure 3-2
DisneylandForward Project Subsequent EIR Water Supply Assessment 3-4 July 2023
To the extent the Project would update The Anaheim Resort Public Realm and Landscape Program and The Anaheim Resort Identity Program and would amend the DRSP Maximum Permitted Structural Height Map and the Anaheim Commercial Recreation Area Maximum Permitted Structural Height Map, the Project Site includes the entire Anaheim Resort (inclusive of the ARSP, DRSP, and HCSP). The Project Site also includes areas identified in the General Plan as planned extensions of Gene Autry Way between Harbor Boulevard and Haster Street and of Clementine Street between Katella Avenue and Orangewood Avenue, portions of which are outside The Anaheim Resort.

3.2 Proposed Project Characteristics

3.2.1 Allowed Land Use
The Disneyland Resort Project
The City analyzed the environmental impacts of The Disneyland Resort Project, including the adoption of the DRSP, in Environmental Impact Report (EIR) No. 311, which the City certified in 1993 along with the adoption of Mitigation Monitoring Program No. 0067. In 1996, in conjunction with an amendment to The Disneyland Resort Project, the City Council approved an Addendum to EIR No. 311, including a Modified Mitigation Monitoring Plan No. 0067. Table 3-1, Uses Currently Allowed Under DRSP/ARSP For Disney Properties, details allowable development.

To date, Disney has developed approximately 45 percent of the approved square footage for theme park uses, in part due to the open-air nature of Disney’s theme parks. The DRSP also contains areas designated as District A, the C-R Overlay, and the Anaheim GardenWalk Overlay. The Project does not propose any modifications to these three areas. EIR No. 311 and SEIR No. 340, including the associated Mitigation Monitoring Plans, would continue to apply to future development in District A, the Anaheim GardenWalk Overlay and the CR-Overlay.

The Anaheim Resort Specific Plan Project
The City analyzed the environmental impacts of the ARSP in Master EIR No. 313, which the City certified in 1994, along with the adoption of Mitigation Monitoring Program No. 85C. In December 2012, the City certified Supplemental EIR (SEIR) No. 340 in support of the approval of Amendment No. 14 to the ARSP Project. SEIR No. 340 reevaluated the environmental changes in and around the ARSP area since certification of Master EIR No. 313 in September 1994 and incorporated the relevant findings from Master EIR No. 313. As detailed in Table 3-1, Uses Currently Allowed Under DRSP/ARSP For Disney Properties, the ARSP, as previously amended, allows development on Disney ARSP Properties of up to 75 or 50 hotel rooms per gross acre with approval of a Final Site Plan. Section 18.116.070 of the City of Anaheim Municipal Code also allows the development of theme parks, entertainment venues, and transportation facilities on these properties with approval of a conditional use permit.

Properties Outside of the Project Site
For those properties located outside of the Project Site, EIR No. 311 and SEIR No. 340, including the associated Mitigation Monitoring Plans, would continue to apply to future development. Specifically, development in District A, the Anaheim GardenWalk Overlay and the DisneylandForward Project Subsequent EIR Water Supply Assessment 3-5 July 2023
CR-Overlay would not be regulated by the mitigation measures associated with this Subsequent EIR.1
Table 3-1
Uses Currently Allowed Under DRSP/ARSP
For Disney Properties
Disney DRSP Property Maximum Allowable
Development Under DRSP Existing Development1 Remaining Entitlement 1 Hotel District Uses (97 acres)
Hotel Rooms 5,600 hotel rooms 2,342 hotel rooms2 3,258 hotel rooms Hotel Retail/Restaurant 300,000 sf 159,549 sf 140,451 sf Hotel Meeting Space 200,000 sf 161,220 sf 38,780 sf
Parking Spaces 9,930 spaces 5,885 spaces 4,045 spaces
Theme Park District (292 acres)
Theme Park 6,850,000 sf 3,192,885 sf3 3,657,115 sf
Administration Building 475,000 sf 305,430 sf 169,570 sf Administration Building
Parking 2,300 spaces 1,545 spaces 755 spaces
Parking District (57.1 acres)
East Parking Area 17,600 spaces 2,179 spaces4 15,421 spaces West Parking Area 16,700 spaces 16,298 spaces 402 spaces Future Expansion District (24.7 acres)
Parking Area 5,100 spaces 2,529 spaces 2,571 spaces
Disney ARSP Properties Maximum Allowable
Development Under ARSP Existing Development1 Remaining Entitlement1 C-R District Uses (75.4 acres)
1515 S. Manchester Ave
1,116 hotel rooms (75 rooms
per gross acre or 75 rooms
per lot or parcel, whichever is
greater)
Cast Member parking (1,261
spaces – temporary parking
lot initially approved on May
8, 2019, and an
approximately 67,424-square
foot office building
1,116 hotel rooms
1585 S. Manchester Ave
1530 S. Harbor Blvd (14.88
acres)
1900 S. Harbor Blvd (44.66
acres)
3,348 hotel rooms (75 rooms
per gross acre or 75 rooms
per lot or parcel, whichever is
greater)5
Toy Story Parking Lot (4,635
spaces-temporary parking lot
approved through June 26,
2024)
3,348 hotel rooms
333 W. Ball Road (10.69
acres)
534 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever is
greater)
Cast Member parking (1,324
spaces) 534 hotel rooms
1717 S. Disneyland Drive
(5.15 acres)
564 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever is
greater)6
Paradise Pier Hotel (489
rooms and approximately
17,619 square feet in
ancillary commercial uses)
45 hotel rooms
1 Project-related actions that may impact off-site areas, or properties not included in the Project Site, include proposed amendments to The Anaheim Resort Identity Program and The Anaheim Resort Public Realm Landscape Program and properties adjacent to the proposed pedestrian bridges north of Disney Way and south of Manchester Avenue.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-6 July 2023
TABLE 3-1 NOTES
1 These numbers are as of the date of the Notice of Preparation, October 21, 2021; over the course of this environmental review process, these numbers may change due to ongoing development efforts based on current entitlements. 2 Hotel rooms include existing Vacation Ownership Resort (VOR) units at the Grand Californian Hotel and VOR units at the Disneyland Hotel under construction as of NOP.
3 This amount includes the existing 246,702 sf of retail, dining and entertainment in Downtown Disney as of the NOP. The DRSP allows up to 350,000 sf of retail, dining and entertainment sf in either the Theme Park or Hotel District. 4 This amount includes the existing 842 spaces in the Ball Cast Member Lot. The DRSP allows up to 5,000 parking spaces identified for the East Parking Area to be located in the Theme Park District.
5 Acreage for density excludes ultimate public right-of-way for Clementine Street and Gene Autry Way. 6 The Paradise Pier Hotel property is comprised of two parcels: a 4.48-acre parcel that includes 489 hotel rooms and a 0.67-acre property that is allowed 75 hotel rooms.

Source: City of Anaheim 2021.

3.2.2 Proposed Project
Within the DRSP, areas are currently divided into the following five Districts: Theme Park, Hotel, Parking, Future Expansion Districts, and District A. The DRSP, particularly the DRSP Zoning and Development Standards in Chapter 18.114 of the Anaheim Municipal Code, specifies the land uses allowed for each District. While no changes to overall boundaries of the DRSP are proposed, the Project would allow the transfer of previously approved uses among the Theme Park, Hotel, Parking, and Future Expansion Districts and divide the DRSP into the following four Districts:

Theme Park, Parking, Southeast District, and District A as summarized in Table 3-2, Proposed Development Summary for Disney Properties.

Within the ARSP, Disney ARSP Properties are within the Commercial Recreation (C-R) District (Development Area 1) of the ARSP. The ARSP, particularly the ARSP Zoning and Development Standards in Chapter 18.116 of the Anaheim Municipal Code, specifies the land uses allowed for this area. The Project would provide Overlays for Disney ARSP Properties to allow certain DRSP uses on Disney ARSP Properties as summarized in Table 3-2. The revised District names and boundaries are shown in Figure 3-3, Proposed DRSP and ARSP Development Districts and Overlays.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-7 July 2023
Table 3-2
Proposed Development Summary for Disney Properties
Disney DRSP Property Maximum Allowable Development Under DRSP Theme Park District – 389 acres
Hotel Rooms Up to 5,600 hotel rooms3
Hotel Retail/Restaurant Up to 300,000 sf
Hotel Meeting Space Up to 200,000 sf
Parking for Hotel Uses Up to 9,930 spaces
Theme Park District Retail Entertainment Up to 350,000 sf1 Theme Park and Back-of-house Uses Up to 6,850,000 sf1,5 Administration Building 475,000 sf
Administration Building Parking 2,300 spaces
Theme Park Parking 5,000 spaces2
Parking District – 57.1 acres
East Parking Area (30.1 acres) Up to 17,600 spaces2
West Parking Area (27 acres) Up to 16,700 spaces
Southeast District – 24.7 acres
Theme Park Up to 390,000 sf5
Hotel Rooms Up to 1,852 hotel rooms3
Parking 5,100 spaces
Total Maximum Allowable Development 7,825,000 sf, 5,600 rooms, and 51,630 spaces Disney ARSP Properties8 Maximum Allowable Development Under ARSP Parking Overlay4 – 25.57 acres
1515 S. Manchester Ave
A portion of the parking spaces allocated to the East Parking Area of the DRSP and up to 1,116 hotel rooms 1585 S. Manchester Ave 1530 S. Harbor Blvd
333 W. Ball Road Up to 5,700 parking spaces and up to 534 hotel rooms6 Theme Park East Overlay – 52.6 acres7
1900 S. Harbor Blvd Up to 840,000 sf of theme park uses and up to 3,348 hotel rooms5
Theme Park West Overlay – 5.15 acres
1717 S. Disneyland Drive Up to 80,000 sf of theme park uses and up 564 hotel rooms5 1 Up to 350,000 sf of the theme park and back-of-house sf may be developed as Retail, Dining and Entertainment sf. 2 Up to 5,000 parking spaces may be constructed within the Theme Park District; however, an equivalent number of potential parking spaces would be removed from the allotment for the East Parking Area. 3 Up to 1,852 hotel rooms may be constructed in the Southeast District; however, an equivalent number of potential hotel rooms would be removed from the allotment for the Theme Park District, such that the maximum number of hotel rooms would not exceed 5,600.
4 For any square footage for back-of-house uses or limited retail, dining and entertainment uses, the traffic generation characteristics of said uses shall not exceed those associated with the otherwise permitted hotel/motel (including accessory uses) density as determined by the City Traffic and Transportation Manager prior to approval of building plans. Further, the proposed development shall not result in infrastructure impacts greater than those associated with the property's permitted hotel/motel density, unless such impacts are duly analyzed and mitigated pursuant to subsequent environmental review (such impacts shall be determined through a sewer and traffic impact analysis to be submitted to the City Engineer). Additional infrastructure studies may be required as determined by the Planning Director.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-8 July 2023
TABLE 3-2 NOTES CONTINUED:
5 Theme park sf may be constructed in the Southeast District, the Theme Park East Overlay and the Theme Park West Overlay; however, an equivalent number of potential theme park sf would be removed from the allotment for the Theme Park District, such that the maximum theme park sf would not exceed 6,850,000 sf. The amount of restaurant sf in the Southeast District and the Theme Park East Overlay shall be further limited to up to 20 percent of the allotted theme park square footage in the District/Overlay.
6 Up to 5,700 parking spaces includes the number of existing spaces (1,324 spaces) plus additional spaces (4,376 spaces). 7 The planned extensions of Clementine Street and Gene Autry Way are proposed to be removed as part of the Project; therefore, the total acreage for the Theme Park East Overlay has been adjusted to include the acreages associated with these street rights-of-way; however, the maximum intensity of up to 3,348 hotel rooms would not change. 8 Actual acres for hotel density to be determined by a licensed Civil Engineer/Land Surveyor.

Source: WDI 2021.

Proposed Modifications to The Disneyland Resort Project The Project proposes to reallocate allowable land uses within the Theme Park District (389 acres), the Parking District (57.1 acres), and the Southeast District (24.7 acres).2 The former Hotel District would become part of the Theme Park District and the Future Expansion District would become the Southeast District. The C-R Overlay and District A would continue to allow specific parcels in the DRSP to become part of The Disneyland Resort or be developed with the uses established by the ARSP. The Anaheim GardenWalk Overlay also would continue to apply to specific parcels within the DRSP area and would provide for the development of the Anaheim GardenWalk lifestyle retail and entertainment complex.

The Project would allow Disney to move a portion of the unused approved theme park square footage to the existing Hotel District, which would become part of the new expanded Theme Park District of the DRSP. The Project also would allow Disney to move a portion of the unused approved theme park square footage to the existing Future Expansion District, which would become the Southeast District of the DRSP. Under the Project, Disney could develop cumulatively up to 6,850,000 previously approved square feet of theme park uses in the DRSP, including up to 6,850,000 previously approved square feet in the expanded Theme Park District if all theme park square footage were developed in the expanded Theme Park District and up to 390,000 previously approved square feet in the newly renamed Southeast District. Similarly, the Project would allow Disney to move the unused portion of the hotel room approvals from the existing Hotel District to the existing Theme Park District or the existing Future Expansion District, the newly renamed Southeast District. Under the Project, Disney could develop cumulatively up to 5,600 previously approved hotel rooms in the DRSP, including a combination of up to 5,600 previously approved hotel rooms in the expanded Theme Park District if all hotel rooms were developed in the expanded Theme Park District and up to 1,852 previously approved hotel rooms in the newly renamed Southeast District. Disney is not seeking additional square footage for theme park uses or retail entertainment uses or additional hotel rooms within The Disneyland Resort as part of this Project.

Instead, the Project would allow Disney to move the existing approvals to other areas governed by the DRSP and ARSP.
2 The total DRSP developable acreage would be increased with the proposed abandonment of public rightof-way in Magic Way, previously dedicated by Disney to the City.

Exhibit 3-8
DisneylandForward Subsequent EIR
Proposed DRSP Development Districts and ARSP Overlays
(06/19/2023 SAK) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_Prop_DRSP_ARSP_Dev_Districts.pdf D:\Projects\3WDI\000400\GRAPHICS\EIR\3rd_City_Review\ex_Prop_DRSP_ARSP_Dev_Districts_20230619.ai Figure 3-3
DisneylandForward Project Subsequent EIR Water Supply Assessment 3-10 July 2023
Proposed Modifications to the Anaheim Resort Specific Plan The Project would create a Theme Park East Overlay within the ARSP for the existing Toy Story Parking Lot and a Theme Park West Overlay within the ARSP for the existing Paradise Pier Hotel.

The Project also would create a Parking Overlay within the ARSP for the Disney ARSP Properties located at 1515 S. Manchester Avenue, 1585 S. Manchester Avenue, 1530 S. Harbor Boulevard, and 333 W. Ball Road. The Parking Overlay would permit development of the same type of parking and transportation facilities allowed under Anaheim Municipal Code Section 18.114.080 for the East Parking Area of the Parking District of the DRSP, and the same type of back-of-house uses, limited retail, dining and entertainment uses, and hotel uses allowed under Anaheim Municipal Code Section 18.114.060 for the Theme Park District of the DRSP.

3.2.3 Proposed Project Phasing
The Applicant would implement the Project in multiple phases over the next 30 years or more.

The time frame for future development of the Project site would be controlled by market forces and determined by the Applicant and third-party owners of the parcels within the Project site. As such, development is expected to occur in market-driven phases over several decades.

Per the requirements of the WSA, water demands must be estimated in five-year increments beginning in 2025 and ending in 2045, consistent with the City’s 2020 UWMP. Assumed Project phasing was coordinated with Disney staff to be consistent with construction and air quality phasing assumptions developed for the DisneylandForward SEIR. These phasing estimates are conservative by assuming more intense development at the beginning of the Project planning period with all hotel uses and 40 acres of theme park uses developed between 2025 and 2030. The remaining Theme Park use is distributed evenly in 5-year increments from 2035 through 2045 with assumed buildout in 2045. The estimated land use phasing through 2045 is shown in Table 3-3.

Table 3-3
Estimated Project Phasing
Phasing 2025 2030 2035 2040 2045
Land Use
Theme Park (ksf)(1) 0 646 1,650 2,653 3,657
Hotel (rooms)(2) 0 8,301 8,301 8,301 8,301
(1) Initial Park use phase of 40 acres (at 16,155 sf/ac) by 2030 with remainder spread equally to 2045. (2) All hotel use assumed completed by 2030. No development by 2025.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-11 July 2023

3.3 Project Water Demand

3.3.1 Water Demand for Existing Land Uses
Metered water consumption (demand) was provided by the City for fiscal years (FY) 2018 and 2019. These years were used to evaluate existing demand prior to the pandemic when the DLR was in full operation. FY 2019 had the highest demand and was selected to represent existing demand and used to project future demands related to Project buildout. The metered data was separated by major DLR property area; Disneyland Park (DLP), Disney’s California Adventure Park (DCA), Downtown Disney (DTD), Disneyland Hotel (DLH), Grand Californian Hotel (GCH), Paradise Pier Hotel (PPH), and other “Shared” uses located outside of these areas which include surface lots, fire water meters, and irrigation of street medians and parkways. Metered water consumption for FY 2019 is summarized in Table 3-4. The water demand for existing land uses within the Project site of 2.37 MGD or 2,656 AFY was accounted for in the existing demand reported in the City’s 2020 UWMP, along with future demand projected through FY 2045.

Table 3-4
Existing Water Demand
Use
FY 2019
Demand (gpd)
Existing
Quantity Units
Factor
(gpd/unit)
Theme Park(1) 1,567,851 3,193 ksf 491
Downtown Disney(2) 90,420 247 ksf
Hotel 552,024 2,831 rooms 195
Shared 160,898
Total 2,371,193
(1) Estimated 121,500 gpd for TDA subtracted from Theme Park demand data. TDA demand taken from EIR 311 based on 270 gpd/ksf for office, cafeteria, and health club. (2) Existing square-footage is only partially occupied and included in Theme Park District Retail/Entertainment land use.

3.3.2 Estimated Project Water Demand
Unit water use factors were developed to estimate water demand for future DLR expansion based on the FY 2019 consumption by use type and existing development. Factors were calculated for Theme Park uses, a portion of which may be used for retail and entertainment, and hotel uses, which includes associated retail, restaurant, and meeting spaces. These uses were grouped based on the meter data available. The resulting demand factors are included in Table 3-4. Using these factors, the estimated buildout water demand of the remaining entitled uses are shown in Table 3-

5. DisneylandForward Project Subsequent EIR Water Supply Assessment 3-12 July 2023
Table 3-5
Estimated Project Water Demands
Remaining Entitlement
Remaining
Entitlement Units
Factor
(gpd/unit)
Demand
gpd afy
Theme Park 3,657 ksf 491 1,795,809 2,012
Retail/Entertainment(1) 103 ksf 0
DRSP Hotel 3,258 rooms 195 635,310 712
ARSP Hotel 5,043 rooms 195 983,385 1,102
Total 3,414,504 3,825
(1) Acreage included in Theme Park. Allowed theme park area that may be used as retail, dining, and entertainment.

The combined existing (Table 3-4) and projected (Table 3-5) water demands result in a buildout demand of 6,482 AFY for Disney-owned or Controlled Properties. For comparison, the DRSP water analysis, from EIR No. 311, projected a buildout water demand of 6,435 AFY. Water demand for additional hotel uses within the Commercial Recreation District (CR District) of the ARSP, where Disney ARSP Properties are located, was projected to equal 509 AFY in the WSA prepared in 2009 as part of SEIR No. 340. This water demand represented the increase related to the addition of 3,638 hotel rooms, above what was already allowed in the City’s 2004 General Plan Update. The 2009 WSA did not specifically identify water demand for Disney-owned or Controlled Properties within the ARSP. A hotel use factor of 125 gpd/room was utilized in the 2009 WSA analysis which would equate to a buildout flow of 775 AFY for Disney’s existing (489 rooms) and remaining entitled hotel uses (5,043 rooms) within the ARSP. The resulting combined Disney Property water demand from these two previous environmental documents equals 7,210 AFY (6,435 AFY for DRSP buildout plus 775 AFY for ARSP hotel uses). This total demand projection from EIR No. 311 and the ARSP WSA is eleven percent higher than the current projection for buildout demand. This is very reasonable considering current water saving practices which have reduced existing water use and will likely continue to contribute to future water savings.

Based on the Project phasing as shown in Table 3-3, estimated water demand phasing is shown in Table 3-6 with buildout assumed to occur by 2045. The projected demands include an estimated

4.85 percent in water loss or non-revenue water, consistent with the 2020 UWMP.

DisneylandForward Project Subsequent EIR Water Supply Assessment 3-13 July 2023
Table 3-6
Estimated Project Phasing of Water Demand
Phasing 2025 2030 2035 2040 2045
Land Use
Theme Park (ksf)(1) 0 646 1,650 2,653 3,657
Hotel (rooms)(2) 0 8,301 8,301 8,301 8,301
Water Demand (AFY)
Theme Park 0 355 907 1,459 2,012
Hotel 0 1,813 1,813 1,813 1,813
Total (without losses) 0 2,169 2,721 3,273 3,825
Total (with 4.85% water loss) 0 2,274 2,853 3,431 4,010 (1) Initial Park use phase of 40 acres (at 16,155 sf/ac) by 2030 with remainder spread equally to 2045. (2) All hotel use assumed completed by 2030. No development by 2025.

DisneylandForward Project Subsequent EIR Water Supply Assessment 4-1 July 2023
4 CITY WATER SYSTEM

4.1 City Water System Characteristics
The City's Water Service Area consists of virtually the entire area within the City limits; however, the Service Area excludes some areas that are inside or within the Anaheim City limits but serviced by other water purveyors and includes some areas that are outside the City limits but serviced by the Anaheim Public Utilities (APU). The City’s water use sectors mainly include single family residential, multi-family residential and general services (i.e., commercial, industrial, municipal, and institutional consumers).

As the City has developed, the APUD has increased its connections to imported water supplies, increased the number of its wells, replaced old wells with higher producing wells, built a series of reservoirs, and greatly expanded the transmission and distribution system to meet the water service requirements of a growing number of customers.

The City’s current major water system facilities consist of eight imported water service connections to Metropolitan (one untreated water and seven treated water connections), 18 active wells, one 920 million gallon (MG) reservoir for untreated water, one 20 million gallons per day (MGD) water treatment plant, 13 treated water reservoirs with 38.75 MG of total storage capacity, permanent chlorination facilities at various sites, nine booster pump stations, approximately 758 miles of water mains and approximately 7,950 fire hydrants.

Figure 4-1 depicts the location of the City’s major water supply, treatment and storage facilities, the Water Service Area, and each of the inclusion/exclusion areas mentioned above. The water system service area has elevations ranging from less than 60 feet to over 1,200 feet above sea level.

To provide appropriate operation pressures for a wide range of service elevations, the water system is divided into 19 pressure zones. The lowest pressure zone operates at a static hydraulic grade line (HGL) elevation of 220 feet above sea level, and the highest pressure zone operates at a static HGL elevation of 1,320 feet above sea level.

The City's water distribution system is generally divided into two main geographic areas: the "Flatland Area" (i.e. 555 HGL elevation and below) and the "Hill and Canyon Area" (i.e. the 585 HGL elevation and above). The Flatland Area is approximately 22,500 acres, situated generally north and west of the Santa Ana River (SAR), and is almost entirely served by groundwater (with Metropolitan imported water supplemented, as necessary). The Hill and Canyon Area is approximately 9,060 acres, situated generally south and east of the SAR, and served primarily by imported water from Metropolitan.

The City’s water service area population was 365,987 in 2020 according to the Center of Demographics Research (CDR) at California State University, Fullerton. CDR population projections are based on the City’s water service area using a benchmark based on September 2020. CDR projected the City’s water service area population to increase to 415,345 by 2045. The City also attracts a significant number of visitors year-round due to the many entertainment options and convention/conference center that contribute to increased water demands.

City of Anaheim
2020 Urban Water Management Plan Chapter 3
3-5
Figure 4-1:

Figure 3-2: City of Anaheim Service Area
Disneyland Forward Subsequent EIR Anaheim Public Utilities Major Facilities and Service Area Figure 4-1 DisneylandForward Project Subsequent EIR Water Supply Assessment 4-3 July 2023

4.2 City Water Demands

4.2.1 Historic Water Use
Southern California’s urban water demand has been largely shaped by the efforts to comply with SBx7-7. This law requires all California retail urban water suppliers serving more than 3,000 acrefeet per year (AFY) or 3,000 service connections to achieve a 20 percent water demand reduction (from a historical baseline) by 2020. The City has been actively engaged in efforts to reduce water use in its service area to meet the final 2020 water use target. Meeting this target is critical to ensure the City’s eligibility to receive future state water grants and loans.

On May 9, 2016, Governor Brown issued Executive Order B-37-16 that builds on temporary statewide emergency water restrictions to establish longer-term water conservation measures, including permanent monthly water use reporting, new permanent water use standards in California communities and bans on clearly wasteful practices. Through a public process and working with partners such as urban water suppliers, local governments, and environmental groups, DWR and the SWRCB will develop new water use efficiency targets as part of a longterm conservation framework for urban water agencies. These targets go beyond the 20% reduction in per capita urban water use by 2020 that was embodied in SBx7-7 and will be customized to fit the unique conditions of each water supplier.

In response to the current drought, Governor Newsom signed Executive Order N-7-22 on March 28, 2022, after declaring states of emergency in April, May, July, and October of 2021 due to prolonged drought conditions. The purpose of the order is to help the State achieve conservation goals by implanting various water use reduction measures including the requirement that each water supplier implement shortage response actions for a shortage level of twenty percent (a Level 2 shortage under Section 10632 of the Water Code).

In addition to local water conservation ordinances, the City has engaged in activities that range from being a signatory member of the California Water Efficiency Partnership’s (formerly California Urban Water Conservation Council) Best management Practices (BMP) Memorandum of Understanding since 2000 to partnering with Metropolitan on educational programs, indoor retrofits and training.

DisneylandForward Project Subsequent EIR Water Supply Assessment 4-4 July 2023
The California Green Building Standards Code (CGBC) has a direct impact on new residential and non-residential building and water conservation in the State. The 2016 California Green Building Standards Code, which became effective on January 1, 2017, aims to cut indoor water consumption by 20 to 35 percent from standards in place prior to the adoption of the first CGBC that became effective August 1, 2009, primarily through more efficient indoor water fixtures. The 2016 California Green Building Standards Code also includes outdoor water conservation by reducing the area devoted to high-irrigation use lawns and plants, emphasizing natural drought-tolerant plantings and the installation of irrigation controls that respond to local weather conditions. This is consistent with the Model Water Efficient Landscape Ordinance (MWELO), which was adopted by the State on July 15, 2015, and corresponding ordinance adopted by the City on January 26, 2016 (Ordinance No. 6355).

Historic water use by sector for the five years prior to the previous UWMP, is shown in Table 4-

1. Total water use, including non-revenue water, has decreased from 62,053 AF in fiscal year 2015 to 56,912 AF in fiscal year 2020 or an 8.3 percent decrease.

Table 4-1
Historical City Water Demand
Customer Class FY 14-15 FY 15-16 FY 16-17 FY 17-18 FY 18-19 FY 19-20 Single Family 23,126 18,524 19,277 21,339 19,939 20,098 Multi-Family 12,668 11,247 11,424 11,837 11,403 11,374
CII(1) 24,068 20,325 21,876 23,670 22,247 20,912
Fire/Temp 844 807 788 837 803 796
Total Sales(1) 60,706 50,903 53,365 57,683 54,392 53,180 Non-Revenue Water(2) 924 1,845 2,908 2,790 2,679 3,282
Potable System Demand 61,630 52,748 56,273 60,473 57,071 56,462 Recycled Water 71 79 106 114 110 101
Irrigation Well Production(3) 352 319 332 366 306 349
Total Demand 62,053 53,145 56,711 60,953 57,488 56,912
(1) Excludes Recycled Water but includes raw water delivery to Anaheim Hills Golf Course. (2) The non-revenue water calculated in the water loss audits is discussed in Section 4.3. (3) Pumping from the well at Dad Miller Golf Course (DMGC) for irrigation.

4.2.2 Projected Water Use
City water demand was developed and projected in the City’s 2020 UWMP in coordination with MWDOC and OCWD as a regional effort and calculated by CDM Smith (2020). A water demand base-year was chosen as an average of FY 2018 and FY 2019 as FY 2020 water use by user class was likely impacted by COVID-19. Demographic projections from the CDR were used to drive the forecast. The major focus was on single-family (SF) and multifamily (MF) residential demand as the primary water demand in the City and the relative consistency of commercial/institutional/industrial (CII) demands over the years.

Future City water demands were projected based on land use, population and economic growth.

Baseline conservation was assumed and includes the implementation of future passive measures DisneylandForward Project Subsequent EIR Water Supply Assessment 4-5 July 2023
affecting new developments, including the Model Water Efficient Landscape, plumbing code efficiencies for toilets, and expected plumbing code for high-efficiency clothes washers. It also assumes the implementation of future active measures for existing customers and assuming the implementation of Metropolitan incentive programs at historical annual levels seen in Orange County.

City water demands projected in the 2020 UWMP for the years 2025 through 2045 are shown in Table 4-2. All projected demands include an estimated 4.85 percent in water losses. Because these demand projections were based on demographic forecasts from CDR, water demands for specific development projects were not individually identified. Therefore, it was not clearly apparent if the demands from the Project and other anticipated City development were sufficiently accounted for.

As such, one major focus of this WSA was to evaluate, in more detail than the more regional CDM Smith analysis, the projected demands for proposed development including the Project, the Regional Housing Needs Assessment (RHNA), and other planned projects. Based on this analysis, presented below, the net new water demand for the Project of 4,010 AFY (including water losses) is assumed to be included in the 2020 UWMP demand projections in Table 4-2.

Table 4-2
2020 UWMP Water Demand Projections
2020 2025 2030 2035 2040 2045
SF Housing 20,098 20,374 20,012 19,664 19,303 19,229
MF Housing 11,374 12,523 12,545 12,963 13,437 14,051
Other Potable (CII) 20,912 22,794 26,778 28,117 29,523 29,523 Large Landscape (Golf Course) 349 350 350 350 350 350
Total Potable Demand 52,733 56,041 59,685 61,094 62,613 63,153 Losses 3,282 2,717 2,895 2,964 3,038 3,064
Fire/Temp 796
% Losses 4.85% 4.85% 4.85% 4.85% 4.85%
Recycled Water 101 120 120 120 120 120
Total Demand 56,912 58,878 62,700 64,178 65,771 66,337
1) 2020 represents actual use, not calculated from the estimated factors. 2020 factors represent average of 2018 and 2019.

RHNA and Planned Development Projects
Anticipated development was compiled from Appendix B, Adequate Sites Analysis, of the City’s 6 th Cycle Housing Element Draft Report dated October 2021. Potential housing element (HE) sites are summarized in Table B-1 of the Adequate Sites Analysis including development projects with submitted applications (called “Pipeline Projects”), anticipated accessory dwelling units (ADU), and additional adequate sites Citywide both with and without a required change in General Plan Land Use. This table also includes the required RHNA at all income levels. The total number of adequate sites exceeds the City’s RHNA at all income levels.

The data from the Adequate Sites Analysis was downloaded in Excel format and includes the number of DUs as well as non-residential square footage and number of hotel rooms for Pipeline DisneylandForward Project Subsequent EIR Water Supply Assessment 4-6 July 2023
Projects, where applicable. After accounting for Pipeline Projects and projected ADUs the remaining RHNA Citywide housing need equals approximately 6,400 DUs. The data from the RHNA was used to estimate related water demands and phasing included in Table A-1 of Appendix A. Other known and approved projects, not included in the Adequate Sites Analysis, were added to the development projections in Table A-1. These are primarily non-housing projects which are not relevant to the RHNA and include Anaheim Hotel, Clementine Hotel, and Katella Gateway II in The Platinum Triangle (395 DUs).

Existing land use data for the Pipeline Project parcels and other approved development parcels were determined using assessor parcel data and totaled to estimate existing water demand. This demand is subtracted from the projected demands to estimate the demand increase for anticipated development. Existing demands for additional Citywide HE sites were conservatively assumed to be negligeable. The total water demand increase and phasing for the RHNA and other anticipated development is summarized in Tables 4-3 and 4-4.

Table 4-3
RHNA and Planned Development Buildout Water Demand
Land Use Existing Projected Demand
Increase (AFY)
Unit Water Use
DU NR KSF DU Rooms NR KSF Factor (gpd/Unit)
Single Family Residential 9 536 181 305.9 gpd/du
Multi-Family Residential 350 21,699 3,694 154.4 gpd/du
Non- Residential 413 5,730 1,311 220 gpd/ksf
Hotel 2,330 392 150 gpd/rm
Total (AFY) 5,577
Table 4-4
RHNA and Planned Development Phasing and Demand Increase Land Use 2025 2030 2035 2040 2045
Projected Development
SFR (DUs) 510 536 536 536 536
MFR (DUs) 7,256 17,714 19,753 20,930 21,699
Non-Residential (KSF) 845 2,558 3,868 4,913 5,730
Hotel (Rooms) 997 1,387 1,387 1,859 2,330
Water Demand Increase (AFY)
Planned Development 1,806 4,112 4,788 5,328 5,742
Existing (165) (165) (165) (165) (165)
Demand Increase (without losses) 1,641 3,947 4,622 5,163 5,577 Demand Increase (4.85% water loss) 1,720 4,138 4,847 5,413 5,847 The phased water demand increases for DLR entitled uses (Table 3-6) and the RHNA plus other planned development (Table 4-4) are totaled in Table 4-5 and compared to the projected water demand increases reported in the City’s 2020 UWMP. The increase in demand for each 5-year DisneylandForward Project Subsequent EIR Water Supply Assessment 4-7 July 2023
period represents the cumulative demand increase relative to existing 2020 demands. The comparison in Table 4-5 shows similar demand increases from the 2020 UWMP, based on demographic data, and from the water demand analysis based on planned development. For each of the 5-year increments, from 2025 through 2045, the difference in the demand presented in the UWMP and calculated for planned development is within 1.0 percent of the total projected water demand in the UWMP presented in Table 4-2. For example, for 2045 the demand projected in the UWMP is 434 AFY lower than the demand projected based on planned development. Though the UWMP accounted for less demand increase by 434 AFY, this amount represents only 0.7 percent of the total projected demand for that year of 66,337 AFY. Given the small differences in the demand projections, it appears the UWMP sufficiently accounted for planned development, including DLR entitled uses. As such, the water supply reliability analysis presented in Section 5 of this WSA will use the City water demand projections as reported in the 2020 UWMP.

Additionally, the phasing utilized in these more detailed projections is conservative (aggressive).

And even if these very slight demand increases do occur there are means available to the City to mitigate them such as utilizing shown surpluses in groundwater by increasing the BPP or reducing demand by converting potable demand to recycled water.

Table 4-5
2020 UWMP and Planned Development Demand Increase Comparison Demand Increase (AFY)(1) 2025 2030 2035 2040 2045
2020 UWMP 1,966 5,788 7,266 8,859 9,425
DLR Entitled Use 0 2,274 2,853 3,431 4,010
RHNA and Other Development 1,720 4,138 4,847 5,413 5,847 Total Planned 1,720 6,412 7,699 8,845 9,857
Difference (AFY)(2) 246 -624 -433 14 -432
% of Total Projected Demand(3) 0.4% -1.0% -0.7% 0.0% -0.7% (1) Increase is relative to existing 2020 water demand. (2) Equals 'Total Planned' minus '2020 UWMP'. Negative value represents amount not accounted for in the UWMP. Positive value represents additional demand accounted for in the UWMP, beyond planned development.
(3) Equals 'Difference (AFY)' divided by the total projected demand in the UWMP for that same year presented in Table 4.2.

4.3 City Water Supply
The City relies on a combination of imported water, local groundwater, and recycled water to meet its water needs. The City works together with two primary agencies, Metropolitan and OCWD to ensure a safe and reliable water supply that will continue to serve the community in periods of drought and shortage. The sources of imported water supplies include the Colorado River and the SWP provided by Metropolitan.

The City’s main source of water supply is groundwater from the OC Basin. The City has historically relied on approximately 70 percent groundwater (previous 10-year average) and 30 DisneylandForward Project Subsequent EIR Water Supply Assessment 4-8 July 2023
percent imported water under normal conditions. Over the 20-year planning period, groundwater supplies are anticipated to increase to between 80 and 85 percent of total water use due to the expansion of the GWRS discussed in Section 6.4 of the City’s 2020 UWMP. The City is currently using a small amount of recycled water directly and is planning to maintain limited direct use into the 25-year planning period.

City water supply by potable source (groundwater and imported water) and non-potable source (groundwater for irrigation and recycled water) for FY 2015 through FY 2020 is shown in Table 4-6.

Table 4-6
Historical City Water Supply (AF)
FY 2015 FY 2016 FY 2017 FY 2018 FY 2019 FY 2020
Groundwater 46,937 42,909 43,963 33,331 45,122 33,944
Imported 14,693 9,839 12,310 27,142 11,950 22,518
Subtotal Potable 61,630 52,748 56,273 60,473 57,071 56,462 Recycled Water 71 79 106 114 110 101
Groundwater(a) 352 319 332 366 306 349
Subtotal Non-Potable 424 398 438 480 416 450
Total Supply 62,053 53,145 56,711 60,953 57,488 56,912
Percent Groundwater 76% 81% 78% 55% 78% 60%
(a) Production from Dad Miller Golf Course Well used for irrigation on course.

4.3.1 Groundwater Supply
The information in this section is intended to furnish the information required by Water Code section 10910(f).

Local groundwater has been the least costly and most reliable source of supply for the City. The City has historically relied on the OC Basin for approximately 70 percent of its supply over the previous ten years. The City operates 18 active groundwater wells to supply potable water to its customers. Recently, the City has taken 14 wells out of service due to water quality concerns related to contaminants known as PFAS, discussed in Section 7.2 of the 2020 UWMP. The City is implementing a new Groundwater Treatment Program that will allow the City to remove PFAS to acceptable State mandated levels. This program will keep long-term costs low for customers while also providing high quality drinking water and maintaining a high degree of water supply reliability.

Basin Characteristics
The OC Basin underlies the northerly half of Orange County beneath broad lowlands. The OC Basin, managed by OCWD, covers an area of approximately 350 square miles, bordered by the Coyote and Chino Hills to the north, the Santa Ana Mountains to the northeast, and the Pacific Ocean to the southwest. The OC Basin boundary extends to the Orange County-Los Angeles Line to the northwest, where groundwater flows across the county line into the Central Groundwater Basin of Los Angeles County. The total thickness of sedimentary rocks in the OC Basin is over 20,000 feet, with only the upper 2,000 to 4,000 feet containing fresh water. The Pleistocene or DisneylandForward Project Subsequent EIR Water Supply Assessment 4-9 July 2023
younger aquifers comprising this Basin are over 2,000 feet deep and form a complex series of interconnected sand and gravel deposits. The OC Basin’s full volume is approximately 66 MAF.

The OC Basin is made up of three major aquifer systems, the Shallow Aquifer system, the Principal Aquifer system, and the Deep Aquifer system. These three aquifer systems are hydraulically connected as groundwater can flow between these aquifers through intervening aquitards or discontinuities in the aquitards. The Shallow Aquifer system occurs from the surface to approximately 250 feet below ground surface. Most of the groundwater from this aquifer system is pumped by small water systems for industrial and agricultural use. The Principal Aquifer system occurs at depths between 200 and 1,300 feet below ground surface. Over 90 percent of groundwater production is from wells that are screened within the Principal Aquifer system. Only a minor amount of groundwater is pumped from the Deep Aquifer system, which underlies the Principal Aquifer system and is up to 2,000 feet deep in the center of the OC Basin.

Basin Production
The OCWD was formed in 1933 by a special legislative act of the California State Legislature to protect and manage the County's vast, natural, groundwater supply using the best available technology and defend its water rights to the OC Basin. This legislation is found in the State of California Statutes, Water – Uncodified Acts, Act 5683, as amended. The OC Basin is managed by OCWD under the Act, which functions as a statutorily imposed physical solution.

Groundwater levels are managed within a safe basin operating range to protect the long-term sustainability of the OC Basin and to protect against land subsidence. OCWD regulates groundwater levels in the OC Basin by regulating the annual amount of pumping. The OCWD Groundwater Management Plan was adopted in June 2015 (OCWD, Groundwater Management Plan 2015 Update, June 2015).

Pumping from the OC Basin is managed through a process that uses financial incentives to encourage groundwater producers to pump a sustainable amount of water. The framework for the financial incentives is based on establishing the basin production percentage (BPP), the percentage of each Producer’s total water supply that comes from groundwater pumped from the OC Basin.

Groundwater production at or below the BPP is assessed a Replenishment Assessment (RA).

While there is no legal limit as to how much an agency pumps from the OC Basin, there is a financial disincentive for pumping above the BPP. Pumping above the BPP is also assessed a Basin Equity Assessment (BEA), in addition to the RA, which is calculated based on Metropolitan's rates.

The BPP is set based on groundwater conditions, availability of imported water supplies, and basin management objectives. The supplies available for recharge must be estimated for a given year.

The supplies of recharge water that are estimated are: 1) Santa Ana River stormflow, 2) Natural incidental recharge, 3) Santa Ana River baseflow, 4) GWRS supplies, and 5) other supplies such as imported water and recycled water purchased for the Alamitos Barrier.

OCWD determines the optimum level of storage for the following year when it sets the BPP each year. The OC Basin is managed to maintain water storage levels of not more than 500,000 AF below full condition to avoid permanent and significant negative or adverse impacts. Operating the OC Basin in this manner enables OCWD to encourage reduced pumping during wet years DisneylandForward Project Subsequent EIR Water Supply Assessment 4-10 July 2023
when surface water supplies are plentiful and increase pumping during dry years to provide additional local water supplies during droughts. When the OC Basin storage approaches the lower end of the operating range, immediate issues that must be addressed include seawater intrusion, increased risk of land subsidence, and potential for shallow wells to become inoperable due to lower water levels.

In 2013, OCWD’s Board of Directors adopted a policy to establish a stable BPP with the intention to work toward achieving and maintaining a 75 percent BPP by FY 2015-16 due to construction of the GWRS Initial Expansion Project, which was completed in 2015. Currently the BPP is set at 77 percent and with the final expansion of the GWRS to be completed by 2023, it is anticipated that the BPP will increase to as much as 85%, with 82% assumed in the City’s 2020 UWMP for the planning period from 2025 through 2045. PFAS impacts will reduce groundwater production to as low as 26 percent of the total supply over the next four years (2021 through 2024). Planned treatment will restore groundwater supply to regular production levels by 2025.

OCWD Engineer’s Report
The OCWD Engineer’s Report reports on the groundwater conditions and investigates information related to water supply and Basin usage within OCWD’s service area. The most recent report is the 2020-21 Engineer’s Report released in February 2022. The BPP for the 2020-21 water year was established at 77 percent by the OCWD Board of Directors. The overall BPP achieved within OCWD for non-irrigation use in the 2020-21 water year was 73.1 percent. The achieved pumping is less than 77 percent primarily due to the water quality impacts of PFAS. For the water year which ended on June 30, 2021, the “annual overdraft” (annual basin storage decrease without supplemental replenishment water) was 149,800 AF. Based on the groundwater basin conditions for this past water year, OCWD may purchase up to 151,000 AF of water for groundwater replenishment during the ensuing water year, beginning on July 1, 2022, pursuant to the District Act.

Sustainable Groundwater Management Act of 2014
Historically, California had never managed its groundwater supplies on a state-wide basis. That has now changed. As of January 1, 2015, the Sustainable Groundwater Management Act (SGMA), signed by Governor Edmund G. Brown in September 2014, regulates the use of groundwater on a more universal scale. At the heart of the new law is a requirement the implementation of a Groundwater Sustainability Plan (GSP) for most groundwater basins throughout the state, including many on which California's agricultural community are highly dependent. These plans can vary from simple basin-wide plans developed and implemented by individual local agencies, to multiple plans by different local agencies operating in the same basin, to state-imposed plans where no sufficient local plan exists.

The OC Basin is unadjudicated and, as a State-designated medium-priority basin, is therefore subject to implementation of a GSP. DWR approved an alternative to a Groundwater Sustainability Plan (GSP) for the OC Basin. The alternative plan was submitted to DWR to meet requirements of the SGMA and demonstrate how water managers have already achieved or will achieve sustainable groundwater management. DWR received 15 alternative plans and nine were approved. The plan’s approval is a testament to OCWD’s stewardship of the OC Basin since 1933.

DisneylandForward Project Subsequent EIR Water Supply Assessment 4-11 July 2023
The alternative report that was approved by DWR, entitled Basin 8-1 Alternative, was prepared in collaboration with the City of La Habra and Irvine Ranch Water District. OCWD has an adopted Groundwater Management Plan but elected to create a new report in a format that mirrors a GSP, which is required under SGMA.

4.3.2 Imported Water (Surface Water)
The information in this section is intended to provide the information required by Water Code section 10910(d).

The City supplements its local groundwater with imported water purchased from Metropolitan.

Imported water has historically represented approximately 30 percent of the City’s total water supply under normal conditions. Metropolitan’s principal sources of water are the Colorado River via the Colorado River Aqueduct (CRA) and the Lake Oroville watershed in northern California through the SWP. The raw water obtained from these sources is, for Orange County, treated at the Robert B. Diemer Filtration Plant located north of Yorba Linda. Typically, the Diemer Filtration Plant receives a blend of Colorado River water from Lake Mathews through the Metropolitan Lower Feeder and SWP water through the Yorba Linda Feeder. Water is delivered through five major feeders: The East Orange County Feeder, Orange County Feeder, Second Lower Feeder, West Orange County Feeder, and Allen-McColloch Pipeline. The City maintains seven connections to the Metropolitan feeders and one connection to untreated non-potable water. The total available capacity is approximately 170 cubic feet per second (cfs).

The City of Anaheim is one of only three retail member agencies of Metropolitan in Orange County. As a member agency, pursuant to the Metropolitan Act, the City has preferential rights to a certain percentage of water delivered to Metropolitan each year primarily from the State Water Project and/or the Colorado River Aqueduct as well as other Metropolitan storage programs. Being a member agency of Metropolitan puts the City in a better position relative to receiving water directly from Metropolitan, as opposed to other agencies in Orange County which obtain their imported Metropolitan water through Municipal Water District of Orange County (MWDOC).

Colorado River Supplies
The Colorado River was Metropolitan’s original source of water after Metropolitan’s establishment in 1928. The CRA, which is owned and operated by Metropolitan, transports water from the Colorado River to its terminus at Lake Mathews in Riverside County. The actual amount of water per year that may be conveyed through the CRA to Metropolitan’s member agencies is subject to the availability of Colorado River water for delivery.

The CRA includes supplies from the implementation of the Quantification Settlement Agreement (QSA) and related agreements to transfer water from agricultural agencies to urban uses. The 2003 QSA enabled California to implement major Colorado River water conservation and transfer programs, stabilizing water supplies for 75 years and reducing the state’s demand on the river to its 4.4 million acre-feet (MAF) entitlement. Colorado River transactions are potentially available to supply additional water up to the CRA capacity of 1.25 MAF on an as-needed basis. Water from the Colorado River or its tributaries is available to users in California, Arizona, Colorado, Nevada, New Mexico, Utah, and Wyoming, as well as to Mexico. California is apportioned the use of 4.4 MAF of water from the Colorado River each year plus one-half of any surplus that may be available for use collectively in Arizona, California, and Nevada. In addition, California has DisneylandForward Project Subsequent EIR Water Supply Assessment 4-12 July 2023
historically been allowed to use Colorado River water apportioned to but not used by Arizona or Nevada. Metropolitan has a basic entitlement of 550,000 AFY of Colorado River water, plus surplus water up to an additional 662,000 AFY (Metropolitan, 2020 UWMP) when available under specified conditions.

With the long-term challenges of water demand exceeding available supply from the Colorado River, and additional uncertainties due to climate change, Metropolitan has developed a number of supply and conservation programs to increase the amount of supply available from the Colorado River. These are discussed in Chapter 3 of the Metropolitan 2020 UWMP which also quantifies the volume of water available through these programs to meet expected CRA deliveries equal to its annual capacity of 1.25 MAF. The amount of supplies available to Metropolitan for the 2020 UWMP planning period was based on the latest modeling available from USBR.

State Water Project Supplies
The construction of the SWP was authorized by the State Legislature in 1951. Eight years later, the Legislature passed the Burns-Porter Act, which provided a mechanism for bonds to be issued to pay for the construction of certain portions of the SWP facilities. The DWR has entered into contracts with water districts and regional agencies (SWP Contractors) specifying the amount of SWP water to be delivered to each SWP Contractor. Each SWP Contractor was provided with a contract amount (Table A Amount) and capacity rights to the SWP aqueduct and storage system in return for payments intended to cover operation and maintenance, bondholder obligations, and repayment of moneys loaned from the California Water Fund. DWR water supply contracts contemplate that the SWP would deliver 4.17 million AFY to 29 SWP Contractors.

The SWP consists of a series of pump stations, reservoirs, aqueducts, tunnels, and power plants operated by DWR and is the largest state-built, multipurpose, user-financed water project in the United States. The primary purpose of the SWP is to divert and store water during wet periods in northern and central California and distribute it to areas of need in northern California, the San Francisco Bay area, the San Joaquin Valley, the Central Coast, and Southern California.

The availability of water supplies from the SWP can be highly variable. A wet water year may be followed by a dry or critically dry year and fisheries issues can restrict the operations of the export pumps even when water supplies are available.

The Sacramento-San Joaquin River Delta (Delta) is key to the SWP’s ability to deliver water to its agricultural and urban contractors. All but five of the 29 SWP contractors receive water deliveries below the Delta (pumped via the Harvey O. Banks or Barker Slough pumping plants). However, the Delta faces many challenges concerning its long-term sustainability such as climate change posing a threat of increased variability in floods and droughts. Sea level rise complicates efforts in managing salinity levels and preserving water quality in the Delta to ensure a suitable water supply for urban and agricultural use. Furthermore, other challenges include continued subsidence of Delta islands, many of which are below sea level, and the related threat of a catastrophic levee failure as the water pressure increases, or because of a major seismic event.

Ongoing regulatory restrictions, such as those imposed by federal biological opinions (Biops) on the effects of SWP and the federal Central Valley Project (CVP) operations on certain marine life, also contributes to the challenge of determining the SWP’s water delivery reliability. In dry, DisneylandForward Project Subsequent EIR Water Supply Assessment 4-13 July 2023
below-normal conditions, Metropolitan has increased the supplies delivered through the California Aqueduct by developing flexible CVP/SWP storage and transfer programs. The goal of the storage/transfer programs is to develop additional dry-year supplies that can be conveyed through the available Harvey O. Banks pumping plant capacity to maximize deliveries through the California Aqueduct during dry hydrologic conditions and regulatory restrictions. In addition, the California State Water Resources Control Board (SWRCB) has set water quality objectives that must be met by the SWP including minimum Delta outflows, limits on SWP and CVP Delta exports, and maximum allowable salinity level.
“Table A” water is the maximum entitlement of SWP water for each water contracting agency.

Currently, the combined maximum Table A amount is 4.17 MAFY. Of this amount, 4.13 MAFY is the maximum Table A water available for delivery from the Delta pumps as stated in the State Water Contract. However, deliveries commonly are less than 50 percent of the Table A.

SWP contractors may receive Article 21 water on a short-term basis in addition to Table A water if requested. Article 21 of SWP contracts allows contractors to receive additional water deliveries only under specific conditions, generally during wet months of the year (December through March). Because an SWP contractor must have an immediate use for Article 21 supply or a place to store it outside of the SWP, there are few contractors like Metropolitan that can access such supplies.

Carryover water is SWP water allocated to an SWP contractor and approved for delivery to the contractor each year but not used by the end of the year. The unused water is stored in the SWP’s share of San Luis Reservoir, when space is available, for the contractor to use in the following year.

Turnback pool water is Table A water that has been allocated to SWP contractors that has exceeded their demands. This water can then be purchased by another contractor depending on its availability.

SWP Delta exports are the water supplies that are transferred directly to SWP contractors or to San Luis Reservoir storage south of the Delta via the Harvey O. Banks pumping plant. Estimated average annual Delta exports and SWP Table A water deliveries have generally decreased since 2005, when Delta export regulations affecting SWP pumping operations began to become more restrictive due to the Biops.

Metropolitan’s 2020 UWMP provides details on the factors that affect the ability to estimate existing and future water delivery reliability. In summary, they include water availability at the source, water rights with priority of the SWP, climate change, regulatory restrictions on SWP Delta exports, ongoing environmental and policy planning efforts, and Delta levee failure. Metropolitan estimated SWP supplies using the 2019 SWP Delivery Capability Report distributed by DWR in August 2020. The Delivery Capability Report (DCR) presents the current estimate of the amount of deliveries for current (2020) conditions and conditions 20 years in the future. The 2019 DCR concluded that the SWP could reliably deliver 58 percent of Agency Table A amounts over a longterm average, 7 percent during a single dry year and 26 to 32 percent during various multiple dry year period scenarios. Using these parameters and their other supplies and storage programs, Metropolitan’s 2020 UWMP as well as their 2022 Annual Water Supply and Contingency Plan DisneylandForward Project Subsequent EIR Water Supply Assessment 4-14 July 2023
concluded that they were able to reliably deliver all of their member agencies’ requested supply requirements.

Storage
Storage is a major component of Metropolitan’s dry year resource management strategy.

Metropolitan’s likelihood of having adequate supply capability to meet projected demands, without implementing its Water Supply Allocation Plan (WSAP), is dependent on its storage resources. Under some conditions, Metropolitan may choose to implement the WSAP to preserve storage reserves for a future year rather than using the full supply capability.

Lake Oroville is the SWP’s largest storage facility, with a capacity of about 3.5 MAF. The water is released from Oroville Dam into the Feather River as needed, which converges with the Sacramento River while some of the water at Bethany Reservoir is diverted from the California Aqueduct into the South Bay Aqueduct. The primary pumping plant, the Harvey O. Banks pumping plant, pumps Delta water into the California Aqueduct, which is the longest water conveyance system in California.

4.3.3 Recycled Water Supply
The City recycles a small portion of wastewater at the downtown Water Recycling Facility; however, the City sends most of its collected wastewater to OCSD for treatment and disposal. The downtown Water Recycling Facility treats wastewater diverted from a sewer line to produce recycled water. The waste generated from this facility is disposed back to the City’s sewer system for delivery to the OCSD for treatment. OCWD manages the OC Basin and strives to maintain and increase basin reliability through replenishment with imported water, stormwater, and advanced treated wastewater. OCWD and OCSD have jointly constructed two water recycling projects to meet this goal that include: 1) Green Acres Project (GAP) and 2) GWRS.

Green Acres Project
OCWD owns and operates the GAP, a water recycling system that provides up to 8,400 AFY of recycled water for irrigation and industrial uses. GAP provides an alternate source of water that is mainly delivered to parks, golf courses, greenbelts, cemeteries, and nurseries in the Cities of Costa Mesa, Fountain Valley, Newport Beach, and Santa Ana. Approximately 100 sites use GAP water, current recycled water users include Mile Square Park and Golf Courses in Fountain Valley, Costa Mesa Country Club, Chroma Systems carpet dyeing, Kaiser Permanente, and Caltrans. The City does not receive any GAP water.

GWRS
Anaheim indirectly participates in regional water recycling through the GWRS. The GWRS receives secondary treated wastewater from OCSD and purifies it to levels that meet and exceed all state and federal drinking water standards. The GWRS Phase I plant has been operational since January 2008 and uses a three-step advanced treatment process consisting of microfiltration, reverse osmosis (RO), and ultraviolet (UV) light with hydrogen peroxide. A portion of the treated water is injected into the seawater barrier to prevent seawater intrusion into the groundwater basin.

The other portion of the water is pumped to ponds where the water percolates into deep aquifers and becomes part of Orange County’s water supply. The treatment process is described on OCWD’s website (OCWD, 2022).

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The GWRS has a current production capacity of approximately 103,000 AFY (online 90% of the time) with the expansion that was completed in 2015. In 2021, the GWRS produced approximately 25,700 AF of the highly purified water that was pumped into the injection wells and 59,884 AFY pumped to the percolation ponds in the City where the water is naturally filtered through sand and gravel to deep aquifers of the groundwater basin. The OC Basin provides approximately 77 percent of the potable water supply for 2.5 million people in north and central Orange County.

The design and construction of the first phase (78,500 AFY) of the GWRS project was jointly funded by OCWD and OCSD; Phase 2 expansion (33,600 AFY) was funded solely by OCWD.

The final expansion is scheduled to be completed by 2023, increasing the replenishment capacity from 100 MGD to 130 MGD. The GWRS is the world’s largest water purification system for Indirect Potable Reuse (IPR).

In 2011, the City began purchasing GWRS water for use at its Canyon Power Plant, making the City the first industrial user of GWRS water. This water is used to control and/or reduce air emissions and for landscape irrigation at the Canyon Power Plant located near the northwest corner of Kraemer Boulevard and Miraloma Avenue. In 2014, the City began delivering GWRS water to the newly constructed ARTIC for cooling tower makeup water, toilet flushing, and landscape irrigation.

4.3.4 Projected City Water Supply
A summary of the current and planned sources of water for the City is shown in Table 4-7. The projected supply was developed in coordination with OCWD, MWDOC, and Metropolitan. The Metropolitan water supply and demand forecast for Anaheim projected the local groundwater supply as the amount needed to meet projected demands after subtracting the available supply from Metropolitan (14,000 AFY) and recycled water supply (120 AFY), rather than using the amount of groundwater available to the City based on the BPP. The projected groundwater supply available to the City, shown in Table 4-7, is based on the projected BPP of 82%, consistent with the City’s 2020 UWMP. The City will utilize local groundwater supplies first and supplement with imported water as needed to meet demands.

Table 4-7
Projected Normal City Water Supply (AFY)
Supply Sources/Demands FY 2025 FY 2030 FY 2035 FY 2040 FY 2045 Supply(a) Normal Year
Imported 14,000 14,000 14,000 14,000 14,000
Recycled 120 120 120 120 120
Local (Groundwater) 48,182 51,316 52,528 53,834 54,298
Total Supply 62,302 65,436 66,648 67,954 68,418
(a) From Table 6-7, City of Anaheim 2020 UWMP
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5 RELIABILITY OF WATER SUPPLIES
Every urban water supplier is required to assess the reliability of their water service to its customers under normal, dry, and multiple dry water years. The City depends on a combination of imported and local supplies to meet its water demands and has taken numerous steps to ensure it has adequate supplies. There are various factors that may impact reliability of supplies such as legal, environmental, water quality, and climatic. With the projects and programs implemented by Metropolitan, OCWD, and the City, the water supplies are projected to meet full-service demands.

Metropolitan’s 2020 UWMP finds that Metropolitan can meet full-service demands of its member agencies from 2020 through 2045 during normal years, single dry year, and multiple dry years.

As documented in Metropolitan’s 2020 UWMP, the 2020 IRP update describes the core water resources that will be used to meet full-service demands at the retail level under foreseeable hydrologic conditions from 2020 through 2045. The foundation of Metropolitan’s resource strategy for achieving regional water supply reliability has been to develop and implement water resources programs and activities through its IRP preferred resource mix. This preferred resource mix includes conservation, local resources such as water recycling and groundwater recovery, Colorado River supplies and transfers, SWP supplies and transfers, in-region surface reservoir storage, in-region groundwater storage, out-of-region banking, treatment, conveyance, and infrastructure improvements.

Unlike previous IRP updates, the 2020 IRP incorporates an explicit scenario planning step with the purpose of understanding plausible, yet uncertain, future conditions affecting both supplies and demands. This approach is an improvement over the single outcome approach used and previous IRP updates and in the UWMP requirements. Metropolitan’s UWMP assumptions fall within the plausible future outcomes; however, the IRP goes beyond these requirements to prepare Metropolitan and its member agencies for a wider range of future conditions.

As discussed in Section 4.2, the City’s primary source of water supply is groundwater from the OC Basin. OCWD, which is responsible for the management of the OC Basin, replenishes and maintains the basin at safe levels while significantly increasing the annual yield by use of the best available technology. OCWD continues to develop new replenishment supplies, recharge capacity, and basin protection measures to meet projected production from the OC Basin during average/normal rainfall, during drought periods, and in planning for climate change. The most significant enhancement to OC Basin supply capability is the expansion of the GWRS that recharges recycled water into the OC Basin. Over the 25-year planning period, groundwater supplies are anticipated to increase from 77 percent to between 80 and 85 percent of total water use.

The factors impacting the reliability of the City’s imported and groundwater supplies are discussed in Section 4.3. The following are additional factors that may have an impact on the reliability of Metropolitan and local supplies.

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5.1 Factors Impacting Reliability
It is important to note the factors that impact the reliability of water supplies and to plan accordingly. The factors impacting the reliability of the City’s imported and groundwater supplies are discussed in Section 4.3. The following are additional factors that may have an impact on the reliability of Metropolitan and local supplies.

5.1.1 Environment
Endangered species protection needs in the Delta have resulted in operational constraints to the SWP system, as discussed in the Imported Water Supplies Section 4.3.2. Metropolitan incorporates restrictions on both SWP and CVP operations in its water supply forecasting based on water quality objectives established by the State Water Resources Control Board, the biological opinions of the U.S. Fish and Wildlife Service and National Marine Fisheries Service issued on October 21, 2019, and the Incidental Take Permit issued by the California Department of Fish and Wildlife on March 31, 2020.

5.1.2 Regulatory Considerations
The addition of more species under the Endangered Species Act and new regulatory requirements could impact SWP operations by requiring additional export reductions, releases of additional water from storage or other operational changes impacting water supply operations.

An urban water supplier that anticipates participating in or receiving water from a proposed project (covered action) in the Delta should provide information in their 2015 and 2020 Urban Water Management Plans (UWMP’s) that can be used to demonstrate consistency with the Delta Plan Policy WR P1, Reduced Reliance on the Delta Through Improved Regional Water Self-Reliance.

The information on reduced reliance provided in the UWMP can then be used in the covered action process to demonstrate consistency.

The City receives water from the Delta through Metropolitan and could benefit from a future covered action. As such, Appendix K of the City’s 2020 UWMP provides the analysis and documentation to demonstrate the City’s measurable reduction in reliance on Delta water supplies and improved regional self-reliance to support a certification of consistency for a future covered action. This appendix is also included as an addendum to the 2015 UWMP.

5.1.3 Water Quality

5.1.3.1 Imported Water
Metropolitan is responsible for providing high quality potable water throughout its service area.

Metropolitan performs extensive water quality testing for regulated contaminants and additional contaminants of concern to ensure the safety of its waters. Metropolitan’s supplies originate primarily from the CRA and from the SWP. A blend of these two sources, proportional to each year’s availability of the source, is then delivered throughout Metropolitan’s service area.

Metropolitan’s primary water sources face individual water quality issues of concern. The CRA water source contains higher total dissolved solids (TDS) and the SWP contains higher levels of organic matter, lending to the formation of disinfection byproducts. To remediate the CRA’s high level of salinity and the SWP’s high level of organic matter, Metropolitan blends CRA and SWP DisneylandForward Project Subsequent EIR Water Supply Assessment 5-3 July 2023
supplies and has upgraded all its treatment facilities to include ozone treatment processes. In addition, Metropolitan has been engaged in efforts to protect its Colorado River supplies from threats of uranium, perchlorate, and chromium VI while also investigating the potential water quality impact of emerging contaminants, N-nitrosodimethylamine (NDMA), and pharmaceuticals and personal care products (PPCP). While unforeseeable water quality issues could alter reliability, Metropolitan’s current strategies ensure the deliverability of high-quality water.

The presence of Quagga mussels in water sources is a water quality concern. Quagga mussels are an invasive species that was first discovered in 2007 at Lake Mead, on the Colorado River. This species of mussels forms massive colonies in short periods of time, disrupting ecosystems and blocking water intakes. They can cause significant disruption and damage to water distribution systems. Controlling the spread and impacts of this invasive species within the CRA requires extensive maintenance and results in reduced operational flexibility. It also resulted in Metropolitan eliminating deliveries of CRA water into Diamond Valley Lake (DVL) to keep the reservoir free from Quagga mussels.

5.1.3.2 Groundwater
OCWD is responsible for managing the OC Basin. To maintain groundwater quality, OCWD conducts an extensive monitoring program that serves to manage the OC Basin’s groundwater production, control groundwater contamination, and comply with all required laws and regulations. A network of nearly 700 wells provides OCWD a source for samples, which are tested for a variety of purposes. OCWD collects approximately 20,000 samples each year to monitor Basin water quality. These samples are collected and tested according to approved federal and state procedures as well as industry-recognized quality assurance and control protocols.

Salinity is a significant water quality problem in many parts of southern California, including Orange County. Salinity is a measure of the dissolved minerals in water including both TDS and nitrates. OCWD continually monitors the levels of TDS in wells throughout the OC Basin.

California Secondary Drinking Water Standards for TDS currently has recommended limit of 500 mg/L and an upper limit of 1,000 mg/L. The portions of the OC Basin with the highest levels are generally located in the Cities of Irvine, Tustin, Yorba Linda, Anaheim, Placentia, and Fullerton.

There is also a broad area in the central portion of the OC Basin where TDS ranges from 500 to 700 mg/L. Sources of TDS include the water supplies used to recharge the OC Basin and from onsite wastewater treatment systems, also known as septic systems. The TDS concentration in the OC Basin is expected to decrease over time as the TDS concentration of GWRS water used to recharge the OC Basin is approximately 50 mg/L. The average groundwater TDS concentration for the Basin for 2020-21 was 406 mg/L (compared to 429 mg/L reported for 2019-20), ranging from a low of 237 mg/L in coastal areas, such as Seal Beach, to a high of approximately 679 mg/L in certain inland areas (OCWD, 2022).

Nitrates are one of the most common and widespread contaminants in groundwater supplies, originating from fertilizer use, animal feedlots, wastewater disposal systems, and other sources.

The Maximum Contaminant Level (MCL) for nitrate in drinking water is set at 10 mg/L. OCWD regularly monitors nitrate levels in groundwater and works with producers to treat wells that have exceeded safe levels of nitrate concentrations. OCWD manages the nitrate concentration of water recharged by its facilities to reduce nitrate concentrations in groundwater. This includes the operation of the Prado Wetlands, which was designed to remove nitrogen and other pollutants from DisneylandForward Project Subsequent EIR Water Supply Assessment 5-4 July 2023
the Santa Ana River before the water is diverted for percolation into OCWD’s surface water recharge system.

Manufacturing industries, which operated back in the 1950’s, 60’s, and 70’s, improperly disposed of chemical solvents and other compounds, which now threaten to contaminate the groundwater basin and drinking water supplies in the northern part of the OC Basin. More information can be found on OCWD’s website (www.ocwd.com/what-we-do/water-quality/groundwatercleanup/north-basin). The Volatile Organic Compounds (VOC) pollution in the North Basin (near Fullerton, Anaheim, and Placentia) has affected an estimated 109,000 acre-feet of groundwater in the principal and shallow aquifer. This is an amount equal to about one-third of the water served by OCWD in Orange County in a year. OCWD is working with the U.S. Environmental Protection Agency (EPA) to remediate the VOC contamination and to ensure that the appropriate expertise is being used to secure the best solution for a problem that poses significant risk to the OC Basin.

Initial cleanup efforts have been focused on cutting off and preventing the spread of contamination before the plumes created by past manufacturing travel further into the main aquifer supplying hundreds of potable supply wells. Manufacturing contaminants that have become increasingly a concern in the OC Basin and many other areas are in a group of chemicals referred to as per-and polyfluoroalkyl substances (PFAS), discussed below.
• Per-and polyfluoroalkyl substances (PFAS)
Perfluorooctanoic acid (PFOA) and perflourooctane sulfonate (PFOS) are industrial chemicals that are prevalent in the environment and were once commonly used in many consumer products. They are a part of a larger group referred to PFAS. In July 2019, the State Water Board’s Division of Drinking Water (DDW) updated its guidelines for local water agencies to follow in detecting and reporting the presence of these chemicals in drinking water. The guidelines lower the notification levels from 14 parts per trillion (ppt) to 5.1 ppt of PFOA and from 13 ppt to 6.5 ppt for PFOS. Notification levels are non-regulatory, precautionary measures for concentrations of chemicals in drinking water that warrant further monitoring and assessment. In February 2020, the Board announced new response levels (RLs) of 10 ppt for PFOA and 40 ppt for PFOS. Previously, the RL was 70 ppt for the total concentration of the two contaminants combined. A RL is set higher than a notification level and represents a concentration at which DDW recommends a water system consider taking a water source out of service or providing treatment.

Effective January 1, 2020, legislation requires that water systems that detect levels of PFAS that exceed their respective RL must either take a source out of use or provide specified public notification. Additionally, the State Water Board has requested that the Office of Environmental Health Hazard Assessment (OEHHA) develop public health goals (PHGs) for both constituents which is the next step in the process of establishing maximum contaminant levels (MCLs) in drinking water. As of this report, draft PHGs have not been released.

Agencies across California, including OCWD and the City, are encountering PFAS in water supplies. OCWD became the first public agency in California to achieve state certification to analyze PFAS in drinking water. The City conducts regular testing for PFOA and PFOS in the groundwater from its wells to ensure the City’s water meets or exceeds state and federal guidelines. New PFAS monitoring guidelines impact 15 suppliers in OCWD’s service area and a total of 86 individual wells, including wells in the City of Anaheim.

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Anaheim operates 18 active groundwater wells to meet approximately 77 percent of the City’s water demand. The remaining 23 percent is served with imported water from Metropolitan.

However, due to the new State guidelines, the City has taken 14 wells that exceed the RL set by the DDW out of service. The reduction in groundwater supply is temporarily being replaced with imported water.

The City is implementing a new Groundwater Treatment Program that will allow the City to remove PFAS to acceptable State mandated levels. This program will keep long-term costs low for customers while also providing high quality drinking water and maintaining a high degree of water supply reliability. The Groundwater Treatment Program is expected to be delivered in multiple phases over four years. The first phase will include localized wellhead treatment systems and centralized groundwater treatment systems, associated pipelines, pumps, and other modifications at four groundwater producing well sites within Anaheim. Future phases will include additional treatment systems at groundwater producing sites.

As of January 2023, with the wells out of service, approximately 25 percent of the City’s supply is from groundwater, as opposed to 77 percent under normal conditions.

Other contaminants that OCWD monitors within the OC Basin include:
• Methyl Tertiary Butyl Ether (MTBE) – MTBE is an additive to gasoline that increases octane ratings but became a widespread contaminant in groundwater supplies. The greatest source of MTBE contamination comes from underground fuel tank releases. The primary MCL for MTBE in drinking water is 13 µg/L.
• Volatile Organic Compounds (VOC) – VOCs come from a variety of sources including industrial degreasers, paint thinners, and dry-cleaning solvents. Locations of VOC contamination within the OC Basin include the former El Toro Marine Corps Air Station, the Shallow Aquifer system, and portions of the Principal Aquifer system in the Cities of Fullerton, Placentia, and Anaheim.
• NDMA – NDMA is a compound that can occur in wastewater that contains its precursors and is disinfected via chlorination and/or chloramination. It is also found in food products such as cured meat, fish, beer, milk, and tobacco smoke. The California Notification Level for NDMA is 10 ng/L and the Response Level is 300 ng/L. In the past, NDMA has been found in groundwater near the Talbert Barrier, which was traced to industrial wastewater dischargers. • 1-4-Dioxane – 1-4-Dioxane is a suspected human carcinogen. It is used as a solvent in various industrial processes such as the manufacture of adhesive products and membranes. • Perchlorate – Perchlorate enters groundwater through application of fertilizer containing perchlorate, water imported from the Colorado River, industrial or military sites that have perchlorate, and natural occurrence. Perchlorate was not detected in 84 percent of the 219 production wells tested between the years 2010 through 2014. • Selenium – Selenium is a naturally occurring micronutrient found in soils and groundwater in the Newport Bay watershed. The bio-accumulation of selenium in the food chain may result in deformities, stunted growth, reduced hatching success, and suppression of immune systems in DisneylandForward Project Subsequent EIR Water Supply Assessment 5-6 July 2023
fish and wildlife. Management of selenium is difficult as there is no off-the-shelf treatment technology available.
• Constituents of Emerging Concern (CEC) – CECs are either synthetic or naturally occurring substances that are not currently regulated in water supplies or wastewater discharged but can be detected using very sensitive analytical techniques. The newest group of CECs include pharmaceuticals, personal care products, and endocrine disruptors. OCWD’s laboratory is one of a few in the state of California that continually develops capabilities to analyze for new compounds (OCWD, Groundwater Management Plan 2015 Update, June 2015).

In order to enhance reliability of the water system and minimize the risk of losing wells to contamination, the City operates its own water quality laboratory to test wells the City operates, in addition to the tests conducted by OCWD’s laboratories. The water quality laboratory routinely files results with the State Water Resources Control Board, Division of Drinking Water (DDW, formerly Department of Public Health). Metropolitan and OCWD also monitor the Department’s imported and groundwater supplies, respectively. The Department consistently delivers high quality water that meets or surpasses all federal and state drinking water regulations.

5.1.4 Climate Change
Water supply planning has largely been based on historical hydrological data as a foundation for both the severity and frequency of drought conditions and the frequency and abundance of abovenormal rainfall years. Climate change threatens to shift weather patterns and thus adds uncertainty to water supply planning. Research has identified areas of concern regarding California water supply that include reduced Sierra Nevada snowpack, increased intensity of extreme weather events, prolonged drought periods, changes in runoff patterns, rising sea levels, and changes in water demand levels and patterns.

The City is considering the impacts of climate change on its water resources as an integral part of its long-term water supply planning. Though it is not possible to measure the risk associated with climate change, water supply reliability is more secure with a long-term plan that recognizes such risk and provides the development of resources to offset that risk.

Metropolitan continues to incorporate current climate change science into its planning efforts. The potential impacts of climate change on CRA and SWP supplies are discussed in Section 4.3.

Metropolitan has developed a Robust Decision Making (RDM) approach which is a comprehensive technical process to identify key vulnerabilities to regional reliability. This approach has been incorporated into the IRP process and Metropolitan’s forecast modeling.

Metropolitan assembled a panel of climate change experts to translate how specific climate change impacts would be quantified and to what degree. A wide range of water management strategies are evaluated to develop robust and adaptive plans that will ultimately perform under a wide range of future conditions. As such, climate change has been incorporated within the availability of supplies to the City from Metropolitan.

Local groundwater storage allows flexibility to manage water supplies under varying climate conditions. To the extent that the basin has water in storage, it provides a valuable water supply asset during drought conditions. OCWD works to ensure that the basin can provide a buffer against DisneylandForward Project Subsequent EIR Water Supply Assessment 5-7 July 2023
drought by maintaining sufficient water in storage that can be pumped out in time of need, having a reserve account with sufficient funds to purchase imported water to recharge the basin, operating the basin at the lower storage levels in a safe manner, and having a plan to refill the basin. The basin does rely on a significant amount of water supplies from annual precipitation. Precipitation could diminish if climate patterns continue to become hotter and dryer. For this reason, groundwater recharge and replenishment programs, as described in Sections 4.3.1 and 4.3.3, are an essential component in managing the basin and maintain the reliability of this valuable local supply under potential climate change conditions.

With Metropolitan and OCWD water management programs in place, it is projected that water supplies will meet demands under anticipated climate change conditions within the 2020 UWMP planning period and within the planning period of this WSA.

5.1.5 Supply Diversification
Metropolitan’s 2020 UWMP describes their plans to meet full service demands at the retail level under all foreseeable hydrologic conditions from 2020 through 2045. Meeting the single-dry year and multiple-dry year reliability is based upon this projection. As previously stated herein, the City has historically obtained approximately 30 percent of its supply from imported water and 70 percent of its water from groundwater. The OCWD is currently contracted to purchase, on average, 65,000 acre-feet per year from Metropolitan for groundwater replenishment. This makes the City, to some extent, vulnerable to water supply shortages if there is a problem with Metropolitan. Water supply reliability is sensitive to a portfolio composition with interrelationships of supplies. Any two supply sources with a positive correlation will produce a combined supply with higher variance than either of the two sources individually; the volatility of the correlated sources amplifies when combined. This has been observed in the last five-year drought ending about five years ago when little replenishment water has been available, and the groundwater basin was near an all-time storage low. Therefore, finding an alternative supply to be used when needed (not necessarily regularly), that is not related to Metropolitan would improve overall reliability. OCWD alternate replenishment programs, such as the GWRS, provide such sources.

The City is projected to receive approximately 18 percent of its water supply from Metropolitan.

Metropolitan has supply capabilities to meet projected demands during various hydrologic conditions as presented in Sections 2.3 and 2.4 of their 2020 UWMP. As shown in their water reliability assessment, Metropolitan anticipates being able to meet water demands with adequate supplies across the single driest year and droughts lasting five consecutive years through 2045 as shown in Table 5-1. More detailed information on Metropolitan’s forecasts can be found in their 2020 UWMP. In all scenarios shown in Table 5-1 there is a projected surplus, even without Metropolitan’s Supplies under Development and Potential Supplies.

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Table 5-1
Metropolitan Regional Water Demands
Single-Dry, Multiple-Dry and Average Years (AF)
Single Dry Year MWD Supply Capability and Projected Demands (1977 Hydrology) Fiscal Year 2025 2030 2035 2040 2045
Capability of Current Supplies 2,772,000 2,761,000 2,760,000 2,760,000 2,757,000 Projected Demands 1,544,000 1,500,000 1,473,000 1,496,000 1,525,000 Projected Surplus 1,228,000 1,261,000 1,287,000 1,264,000 1,232,000 Projected Surplus %(a) 80% 84% 87% 84% 81%
Supplies under Development 0 0 0 0 0
Potential Surplus 1,228,000 1,261,000 1,287,000 1,264,000 1,232,000 Potential Surplus %(a) 80% 84% 87% 84% 81%
Multiple Dry Year MWD Supply Capability and Projected Demands (1988-1992 Hydrology) Fiscal Year 2025 2030 2035 2040 2045
Capability of Current Supplies 2,178,800 2,219,000 2,241,000 2,263,000 2,239,000 Projected Demands 1,592,000 1,570,000 1,537,000 1,539,000 1,564,000 Projected Surplus 586,800 649,000 704,000 724,000 675,000 Projected Surplus %(a) 37% 41% 46% 47% 43%
Supplies under Development 0 0 0 0 0
Potential Surplus 586,800 649,000 704,000 724,000 675,000 Potential Surplus %(a) 37% 41% 46% 47% 43%
Average Year MWD Supply Capability and Projected Demands (1922-2017 Hydrology) Fiscal Year 2025 2030 2035 2040 2045
Capability of Current Supplies 3,899,000 3,893,000 3,890,000 3,888,000 3,885,000 Projected Demands 1,427,000 1,388,000 1,362,000 1,378,000 1,403,000 Projected Surplus 2,472,000 2,505,000 2,528,000 2,510,000 2,482,000 Projected Surplus %(a) 173% 180% 186% 182% 177%
Supplies under Development 13,000 13,000 13,000 13,000 13,000 Potential Surplus 2,485,000 2,518,000 2,541,000 2,523,000 2,495,000 Potential Surplus %(a) 174% 181% 187% 183% 178%
(a) As a percentage of projected demand
Source: 2020 Metropolitan Urban Water Management Plan
DisneylandForward Project Subsequent EIR Water Supply Assessment 5-9 July 2023

5.2 City of Anaheim Reliability Measures
The diversification and reliability of the City’s water supply sources are discussed in Sections 4.3 and 5.1. Another important measure of reliability is a water purveyor’s success in managing water shortages. Water supplies may be interrupted or reduced by droughts, earthquakes, and power outages which hinder a water agency’s ability to effectively deliver water. Drought impacts increase with the length of a drought, as supplies in reservoirs and other storage programs are depleted and water levels in groundwater basins decline. The ability to manage water supplies in times of drought or other emergencies is an important part of water resource management for a community. City’s Water Shortage Contingency Plan (WSCP), included as Chapter 8 of the 2020 UWMP, describes the water supply shortage policies the City has in place to respond to events including reductions and catastrophic interruption in water supply. The City has strategies to manage water demand with respect to frequency and magnitude of supply deficiencies.

During a water shortage period, the City will determine the extent of the conservation required based on water supply availability from its groundwater and imported water sources. As a Metropolitan member agency, the City will follow Metropolitan’s adopted WSCP and required actions. Depending on the severity of the water shortage, the City Council may adopt a Water Reduction Plan, as detailed in City Ordinance No. 6332, that is necessary to address the level of water shortage. Additionally, in an emergency which leads to catastrophic supply interruption, the City has an emergency response plan in place to respond to catastrophic interruption and supply shortages greater than 50 percent.

In 1991, the City adopted Municipal Code section 10.18, which consisted of three Water Shortage Plans that could be implemented during declared water shortages. This action was a result of the severe drought the City experienced initiating in 1987. In response to the Governor’s and State Water Board’s actions, the City of Anaheim adopted Ordinance No. 6332, on May 19, 2015, amending Chapter 10.18 of Title 10 of the Anaheim Municipal Code relating to Water Conservation and Water Shortage Contingency Rules and Regulations. The ordinance establishes provisions for prohibitions against water waste and water supply shortage contingency implementation plans, ranging from voluntary measures in level 1 to mandatory measures in response to a level 4 emergency water shortage condition. A copy of Ordinance No. 6332 is included as Appendix B. On July 12, 2016, the City Council adopted Resolution 2016-123 ordering implementation of level 2 (Water Reduction Plan II), and on July 25, 2017, adopted Resolution 2017-121 implementing Water Reduction Plan I, which is comprised of voluntary conservation measures. In response to the Governor’s Executive Order N-7-22 issued March 28, 2022, the City Council adopted Resolution No. 2022-047 implementing Water Reduction Plan II comprised of mandatory conservation measures.

In response to DWR’s adoption of the State MWELO in July 2015, the City Council amended Chapters 10.19 and 18.46 of the Anaheim Municipal Code relating to landscape water efficiency through Ordinance No. 6355 adopted January 26, 2016. This ordinance and the guidelines that go along with it are included in Appendix C. Collectively, the ordinance and guidelines should reduce landscape water usage on new and remodeled landscaping by approximately 25 percent based on DWR estimates.

The City of Anaheim has had a successful track record in implementing water conservation programs. In response to prior voluntary calls for conservation and the new ordinance adopted in DisneylandForward Project Subsequent EIR Water Supply Assessment 5-10 July 2023
2009, 2010/11 demands were reduced approximately 16 percent over the high of four years prior.

And in response to the Governor’s April 1, 2015, call for a 25 percent statewide reduction and the State Water Board’s target conservation set for Anaheim of 20 percent below demands of 2013, the City exceeded their reduction target and through February 2016, reduced water demands by a cumulative 22 percent, or 2.0 percent better than their target.

The Water Conservation Act of 2009, also known as Senate Bill (SB)x7-7, signed into law on February 3, 2010, required the State of California to reduce urban water use by 20 percent (from a historical baseline) by the year 2020. The City has been actively engaged in efforts to reduce water use in its service area to meet the final 2020 water use target, which it accomplished. The City’s 2020 water use target was 162 gallons per capita per day (gpcd) with actual 2020 use equal to 107 gpcd, showing significant reduction in per capita water use.

5.3 Normal, Dry Year and Multiple-Dry Year Supply Reliability

5.3.1 Normal-Year Reliability
Normal-year water demand forecasting was developed for agencies within MWDOC and OCWD service areas, including Anaheim, by CDM Smith (2020) for the 2020 UWMP planning period as described in Section 4.2. These normal-year demands use the average of 2018 and 2019 and the current base year and forecast future demands based on demographics and expected conservation.

The projected normal-year water use by sector is shown in Table 4-2.

A water demand forecasting model was developed as part of MWDOC’s 2016 Orange County Reliability Study to project the 25-year demand for Orange County water agencies (CDM Smith, Final Technical Memorandum #1 of Orange County Reliability Study, April 2016). The demand forecast was also used in the 2018 update. The model defined average (normal) conditions as represented by the average water demand for 1990 through 2014. In Metropolitan’s reliability analysis, a normal year is based on the average hydrology from 1922 through 2017. These hydrologic periods may then be used, by comparison, to determine the impacts of single-dry year and multiple dry year conditions discussed in Sections 5.3.2 and 5.3.3.

City demands are projected to be met with groundwater, imported water, and recycled water supplies with available Metropolitan surplus supplies. Recycled water supply and demand (120 AF) are assumed to remain unchanged. Imported water supply quantities were provided by Metropolitan (equal to 14,000 AF for each of the planning periods) and groundwater supply is based on the BPP of 82 percent, as discussed in Section 4, for all planning periods.

The City demands include the increased demands attributable to the Project. The supplies are consistent with the normal year supplies estimated for imported water and recycled water in the City’s 2020 UWMP. City normal year supplies and demands were discussed in Section 4.0 and are again presented in Table 5-2.

DisneylandForward Project Subsequent EIR Water Supply Assessment 5-11 July 2023
Table 5-2
City Projected Normal Year Water Supply and Demand (AF) Supply Sources/Demands 2025 2030 2035 2040 2045
Supply Normal Year
Imported(a) 14,000 14,000 14,000 14,000 14,000
Recycled(a) 120 120 120 120 120
Local (Groundwater)(b) 48,182 51,316 52,528 53,834 54,298 Total Supply 62,302 65,436 66,648 67,954 68,418
Demand(c) Normal Year
Total City Demand without Project(d) 58,878 60,426 61,325 62,340 62,327 Project Demand(e) 0 2,274 2,853 3,431 4,010
Total Demand 58,878 62,700 64,178 65,771 66,337
Difference (Supply - Demand) 3,424 2,736 2,470 2,183 2,081 [a] From Table 6-9, City of Anaheim 2020 UWMP
[b] Groundwater supply based on a BPP of 82% of potable demand for 2025 through 2045. [c] All normal-year demands include 4.85% non-revenue water (water loss) consistent with City's 2020 UWMP [d] This figure represents normal year demand based on the City's 2020 UWMP excluding new Project demand resulting from remaining DLR entitled uses.
[e] Projected Project demand resulting from remaining DLR entitled uses including 4.85% projected water loss The City is 100 percent reliable for normal year demands from 2025 through 2045. The City has entitlements to receive imported water from Metropolitan via connections to Metropolitan's regional distribution system. Although pipeline and connection capacity rights do not guarantee the availability of water, per se, they do guarantee the ability to convey water when it is available to the Metropolitan distribution system. All imported water supplies are assumed available to the City from existing water transmission facilities. The demand and supplies listed below also include local groundwater supplies that are available to the City through OCWD by a pre-determined pumping percentage. The available supply shown in Table 5-2 does not include reserves available from Metropolitan and local groundwater.

5.3.2 Single-Dry Year Reliability
A single-dry year is defined as a single year of no to minimal rainfall within a period that average precipitation is expected to occur. The water demand forecasting model developed as part of MWDOC’s Orange County Reliability Study evaluated the impacts that weather and future climate can have on water demand using variables of population, temperature, precipitation, unemployment rate, drought restrictions, and conservation measures. The impacts of hot/dry weather condition are reflected as a percentage increase in water demands from the average condition (1990-2014). For a single dry year condition (FY 2013-14), the model projects a six percent increase in demand for the OC Basin area where the City’s service area is located (CDM Smith, Final Technical Memorandum #1 of Orange County Reliability Study, April 2016). For the single-dry year analysis, water demands are increased by six percent for each of the 5-year planning periods from 2025 through 2045.

DisneylandForward Project Subsequent EIR Water Supply Assessment 5-12 July 2023
Table 5-3 shows City supplies and demands projected to occur for a single-dry year based on a repeat of the hydrology in the year 1977, consistent with the 2020 UWMP.

Table 5-3
City Projected Single-Dry Year Water Supply and Demand (AF) Supply Sources/Demands 2025 2030 2035 2040 2045
Supply Single-Dry Year
Imported(a) 14,000 14,000 14,000 14,000 14,000
Recycled 120 120 120 120 120
Local (Groundwater)(b) 50,832 54,138 55,417 56,795 57,284 Total Supply 64,952 68,258 69,537 70,915 71,404
Demand(c) Single-Dry Year
Total City Demand without Project(d) 62,110 63,743 64,692 65,762 65,748 Project Demand(e) 0 2,399 3,009 3,620 4,231
Total Demand 62,110 66,142 67,701 69,382 69,979
Difference (Supply - Demand) 2,842 2,116 1,835 1,533 1,425 [a] From Table 6-9, City of Anaheim 2020 UWMP
[b] Groundwater supply based on a BPP of 82% of potable demand for 2025 through 2045. [c] All single-dry-year potable water demands are 5.5% greater than normal year demands consistent with City's 2020 UWMP.
[d] Single-dry-year demands based on the City's 2020 UWMP excluding existing new Project demand resulting from remaining DLR entitled uses.
[e] Projected Project single-dry year demand resulting from remaining DLR entitled uses including 4.85% projected water loss.

The City has documented that it is 100 percent reliable for single dry year demands from 2025 through 2045 with a demand increase of six percent from normal demand with significant reserves held by Metropolitan, local groundwater supplies, and conservation.

5.3.3 Five Consecutive Dry Years Reliability
Multiple-dry years are defined as five or more consecutive years with minimal rainfall within a period of average precipitation. The water demand forecasting model developed for the Orange County Reliability Study identified a single-dry year condition (FY2013-14) with a six percent increase in demand for the OC Basin area where the City’s service area is located. A five-year multi-dry year scenario was not included in Orange County Reliability Study model analysis.

Metropolitan has also modeled various hydrologic conditions for its service area including individual member agencies using an average condition based on hydrology for the period from 1922 through 2017. The driest five consecutive year period within this time period was from 1988 through 1992. Metropolitan provided the reliability forecast data for Anaheim which was used in the 2020 UWMP to evaluate five-consecutive dry years based on the hydrology from 1988 through 1992. For the five-year period, normal year demands are adjusted/increased by the following percentages: 101.8%, 103.6%, 103.4%, 99.9%, and 101.0%.

DisneylandForward Project Subsequent EIR Water Supply Assessment 5-13 July 2023
Table 5-4 shows City supplies and demands projected to occur for multiple-dry years based on a repeat of the hydrology in the years 1988 through 1992, consistent with Metropolitan. Demands for each 5-year planning period are calculated by multiplying the normal year potable water demand by the water year type percentages. Each 5-year reporting increment, from 2025 through 2045, is calculated as the average of the 5-year multiple-dry year period in the City’s 2020 UWMP with the same assumptions applicable here.

Table 5-4
City Projected Multiple-Dry Year Water Supply and Demand (AF) Supply Sources/Demands 2025 2030 2035 2040 2045
Supply Multiple-Dry Years
Imported(a) 14,000 14,000 14,000 14,000 14,000
Recycled 120 120 120 120 120
Local (Groundwater)(b) 49,116 52,311 53,547 54,878 55,351 Total Supply 63,236 66,431 67,667 68,998 69,471
Demand(c) Multiple-Dry Years
Total City Demand without C3SP(d) 60,018 61,596 62,513 63,547 63,534 Additional C3SP Project Demand(e) 0 2,318 2,908 3,498 4,088 Total Demand 60,018 63,914 65,421 67,045 67,622
Difference (Supply - Demand) 3,218 2,517 2,246 1,954 1,850 [a] From Table 6-9, City of Anaheim 2020 UWMP
[b] Groundwater supply based on a BPP of 82% of potable demand for 2025 through 2045. [c] Multi-dry year potable water demands are adjusted based on hydrology consistent with City's 2020 UWMP.
[d]Multi-dry year demands based on the City's 2020 UWMP excluding existing new Project demand resulting from remaining DLR entitled uses.
[e] Projected Project multi-dry year demand resulting from remaining DLR entitled uses adjusted for dryyear hydrology and including 4.85% projected water loss.

The City is capable of meeting all customers’ demands with significant reserves held by Metropolitan, local groundwater supplies, and conservation in multiple dry years from 2025 through 2045 with multiple dry-year reliability based on Metropolitan’s five consecutive dry year hydrology. In actuality, demands would likely decrease during the end of a five-year dry period due to potential mandated conservation. The assumptions used in the multiple dry-year analysis are conservative to demonstrate the reliability of supplies.

DisneylandForward Project Subsequent EIR Water Supply Assessment 6-1 July 2023
6 CONCLUSION
The estimated buildout water supply requirement for remaining DLR entitled uses is projected to be 4,010 AFY greater (including water loss) than the FY 2020 water supply needed for the existing land uses within DLR property (net new water supply requirement). This increase is 6 percent of the total City demand estimated for FY 2045 in the City’s 2020 UWMP.

The City is projected to have sufficient imported and groundwater supplies to meet normal, singledry year, and multiple-dry year conditions with the addition of the net new Project demands because:

1. Metropolitan has projected supply surpluses for each of these conditions

2. The City can increase groundwater production consistent with their available well capacity, if needed
The information included in this WSA identifies a sufficient and reliable water supply for the City, now and into the future, including a sufficient water supply for the land uses proposed for the Project. These supplies are also sufficient to provide for overall City-wide growth at the rate projected in the City’s 2020 UWMP and this WSA.

DisneylandForward Project Subsequent EIR Water Supply Assessment 7-1 July 2023
7 REFERENCES
The following documents were used in preparing this water supply assessment:

Anaheim, City of, Final Environmental Impact Report 340 Amendment No. 14 to the Anaheim Resort Specific Plan and Mitigation Monitoring Program No. 85C, 2012. http://anaheim.net/1009/Anaheim-Resort
Anaheim, City of, The Anaheim Resort Specific Plan Draft EIR No. 313 with Addendum, 1994. http://anaheim.net/1009/Anaheim-Resort
Anaheim, City of, The Disneyland Resort Specific Plan Final Environmental Impact Report No. 311 with Addendum and Modified Mitigation Monitoring Program 0067, 1993. http://anaheim.net/1017/Disneyland-Resort
CDM Smith, Final Technical Memorandum #1, 2016 Orange County Water Reliability Study, Water Demand Forecast and Supply Gap Analysis, 2016.

CDM Smith, 2018 Orange County Water Reliability Study, 2019.

City of Anaheim, California Municipal Code Ordinance No. 6332 (2015).

City of Anaheim, Public Utilities Department, 2020 Urban Water Management Plan, June 2021.

Department of Water Resources (DWR), Bulletin 118-1 Basin Description for Coastal Plain of Orange County Groundwater Basin Number 8-1, September 5, 2001.

Metropolitan Water District of Southern California (MWD), 2020 Urban Water Management Plan, June 2021.

Orange County Water District (OCWD), Orange County Water District 2020 Master Plan Report, 2000.

Orange County Water District (OCWD), Engineer’s Report, 2020-2021, 2022.

Orange County Water District (OCWD), Resolution No. 13-1-6 Stating the District’s Goal to Develop the Necessary Supplies and Facilities to Achieve and Maintain a 75% Basin Production Percentage. Orange County Water District Board, 2013.

Orange County Water District (OCWD), Groundwater Management Plan 2015 Update, 2015.

Psomas, Amendment to the Anaheim Resort Specific Plan Water Supply Assessment, City of Anaheim, 2009.

DisneylandForward Project Subsequent EIR Water Supply Assessment 7-2 July 2023
City of La Habra, Irvine Ranch Water District, & Orange County Water District, Basin 8-1 Alternative 2022 Update https://www.ocwd.com/about/meeting-agendas-minutes/boardcommittee-meetings/2021/12/bod-20211215/05cbasin-8-1-alternative-2022-update/ Orange County Water District (OCWD), GWRS 2021 Annual Report, June 2022. https://www.ocwd.com/media/10680/2021-gwrs-annual-report.pdf.

Southern California Association of Governments, 2021. 6th Cycle Regional Housing Needs Assessment.

DisneylandForward Project SEIR/EIR Water Supply Assessment

APPENDIX A

PLANNED DEVELOPMENT WATER DEMAND PROJECTIONS
Anticipated Development and Phasing
Pipeline
ID
Status Area Project SFR DU MFR DU Rooms NR SF SFR DU MFR DU Rooms Non-Res (sf) SFR DU MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf)
MFR DU Rooms
Non-Res
(sf)
OTHER Approved CENTRAL Anaheim Hotel 330 330
OTHER Approved CENTRAL 1730 S. Clementine Hotel 125 125 OTHER Approved PT Katella Gateway II 395 395
P-10 Approved WEST Parkgate Center 48 48
P-11 Application WEST LinbrookVillas 12 12
P-12 Conceptual WEST Lincoln Motel Conversion 235 235
P-13 Application WEST
2 Custom Homes
Development 4 4
P-14 Approved CENTRAL Lincoln Apartments 19 19
P-15 Conceptual WEST 850 Western Ave 2 2
P-17 Application WEST Pepperwood Place 12 12
P-19 Conceptual WEST Mungall Apartments 24 24
P-20 Application EAST 145 S Vista Grande 1 1
P-21 Approved PT LT Platinum Center 405 200 660,000 203 200 330,000 203 330,000 P-22 Approved WEST
Ball and Western
Apartments 11 11
P-23 Approved BBSP
39 Commons Beach II
- Rental 100 100
P-24 Application WEST Orange Avenue - 8 Units 8 8
P-25 Application C3SP
SEC Ball and Anaheim
Mixed Use 159 182 6,000 159 182 6,000
P-27 Approved BBSP
39 Commons Beach II For
Sale Townhomes 134 134
P-28 Application WEST
Anaheim A - Broadway
Townhomes 34 34
P-29 Application C3
Broadway Tower
Apartments 36 667 36 667
P-3 Approved CENTRAL Carleton Apartments 4 4
P-30 Conceptual CENTRAL
West Street Affordable
Housing Project 157 157
P-31 Application CENTRAL
1625 W Cerritos 4-Lot
Subdivision 5 5
P-32 Approved CENTRAL Center of Hope 72 72
P-33 Approved WEST Townes at Broadway 112 112
P-34 Conceptual C3SP Lumberyards 56 56
P-35 Conceptual EAST Deer Park 513 513
P-36 Approved C3 Legacy Anaheim 156 156
P-37 Approved BBSP
39 Commons - NEC Beach
Blvd/Lincoln Ave 65 65
P-38 Application EAST Rio Grande Subdivision 4 4
P-39 Conceptual PT Ball Road Basin 1,320 15,000 1,320 15,000 P-41 Application EAST VYAS Development 3 3
P-42 Application WEST Tinh Homes 8 8
P-44 Approved EAST Short Street Parcel Map 4 4
P-45 Approved WEST Lincoln at Euclid 115 115
P-47 Approved C3 Walnut Parcel Map 2 2
Anticipated Development 2025 2030 2035 2040 2045
Table A-1
Anticipated Development and Phasing
Pipeline
ID
Status Area Project SFR DU MFR DU Rooms NR SF SFR DU MFR DU Rooms Non-Res (sf) SFR DU MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf)
MFR DU Rooms
Non-Res
(sf)
Anticipated Development 2025 2030 2035 2040 2045
P-48
Application C3
Lincoln Colony
Apartments 43 485 43 485
P-5 Application C3SP
Anaheim B - 31
Townhomes 31 31
P-50 Approved PT
A-Town Development
Area H SF 84 84
P-51 Application PT
A-Town Development
Area B 270 270
P-52 Application PT
A-Town Development
Area F 73 73
P-53 Approved PT A-Town Development MF 154 154
P-54 Approved CENTRAL Ryan Homes 3 3
P-55 Approved WEST 807 S Dale 1 1
P-56 Approved PT
Jefferson Stadium Park
Final Phase 332 14,504 332 14,504
P-57 Approved EAST Deer Canyon 35 35
P-58 Approved C3 Lemon Street Industrial 1 7,239 1 7,239 P-59 Approved EAST Link OC 406 5,000 406 5,000
P-6 Approved WEST
1600 W Lincoln Avenue
Apartments 315 3,413 315 3,413
P-60 Approved WEST
Melia Homes (Victory
Baptist Church) 59 59
P-61 Approved C3 BARN 57 16,500 57 16,500
P-63 Application PT
A-Town Development
Area E 257 257
P-65 Approved C3 Avanti Townhomes 292 292
P-66 Application PT ocV!BE 1,500 550 1,196,110 269 160 455,933 1,231 390 570,178 170,000 P-68 Approved PT
Stadium District Sub- Area
A Project 5,175 943 3,800,000 1,190 798,000 2,039 1,139,747 1,177 472 1,045,101 769 472 817,152 P-69 Approved C3 La Palma Village 162 162
P-7 Application C3 625 S Illinois Street 3 3
P-70 Conceptual EAST
Anaheim Hills Festival
Shopping Center 600 600
P-71 Conceptual CENTRAL
Sunkist Lincoln
Townhomes 86 86
P-72 Application WEST 1442 N Dale Ave 18 18
P-73 Conceptual PT
Remainder A-Town Areas
C and D 508 508
P-74 Conceptual WEST
Melia Homes (Faith
Lutheran Church) 24 24
P-8 Approved C3 The Invitation 269 269
P-9 Approved C3 100 W. Midway 86 5,000 86 5,000
ADUs Other - ADUs
Projected ADU
Construction 756 420 336
Citywide
Other -
Citywide
Remaining Low Income HE
Need 6,400 2,400 4,000
Total Units 536 21,699 2,330 5,729,918 510 7,256 997 844,741 26 10,459 390 1,713,178 2,039 - 1,309,747 1,177 472 1,045,101 769 472 817,152 Anticipated Development and Phasing
Pipeline
ID
Status Area Project SFR DU MFR DU Rooms NR SF SFR DU MFR DU Rooms Non-Res (sf) SFR DU MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf) MFR DU Rooms
Non-Res
(sf)
MFR DU Rooms
Non-Res
(sf)
Anticipated Development 2025 2030 2035 2040 2045
156,018 1,120,337 149,550 185,843 7,954 1,614,919 58,500 376,899 314,872 - 288,144 181,717 70,725 229,922 118,743 70,725 179,773 175 1,255 168 208 9 1,809 66 422 353 - 323 204 79 258 133 79 201 Total Demand (gpd)
Total Demand (AFY)
DisneylandForward Project Subsequent EIR Water Supply Assessment

APPENDIX B
CITY OF ANAHEIM ORDINANCE NO. 6332
Chapter 10.18

WATER CONSERVATION AND WATER SHORTAGE CONTINGENCY RULES AND

REGULATIONS
Sections:

10.18.010 Purpose.

10.18.020 Scope of this Chapter.

10.18.030 Definitions.

10.18.040 Authorization.

10.18.050 Water Reduction Plan Implementation.

10.18.060 Voluntary Water Conservation Measures.

10.18.070 Water Reduction Plan I—Additional Voluntary Water Conservation Measures.

10.18.080 Water Reduction Plan II—Mandatory Measures.

10.18.090 Water Reduction Plan III—Mandatory Measures.

10.18.100 Water Reduction Plan IV—Mandatory Measures.

10.18.110 Alternative Compliance Plan.

10.18.120 Water Conservation Rate.

10.18.130 Violations and Remedies.

10.18.140 Reservation of Rights.

10.18.010 PURPOSE.

The City Council finds and determines that because of prevailing water supply conditions within the State of California and the declared policy of the State, it is necessary and appropriate for the City to adopt, implement, and enforce water conservation rules and regulations to reduce water consumption within the City through conservation to ensure the reasonable and beneficial use of water and maximize its efficient use within the City. The City Council further finds and determines it is necessary and appropriate for the City to implement and enforce water shortage contingency rules and regulations during periods of water supply shortages and water shortage emergencies to ensure that there is sufficient water for human consumption, sanitation, and fire protection. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.020 SCOPE OF THIS CHAPTER.
.010 Except as expressly stated within this Chapter, the provisions of this Chapter shall apply to all persons, entities and property within the City. In addition, this chapter shall apply to any Customers outside of the City. .020 The provisions of this Chapter are in addition to, and not in lieu of, the provisions of Section 10.16.380 of this Code relating to curtailed supply of electricity or water.
.030 The provisions of this Chapter shall not apply to the following water uses:
.01 Any use of water necessary for (a) the testing and maintenance of the Water System or City fire suppression system, or (b) fire suppression or other similar emergency services affecting the public health and safety; .02 Any use of water necessary to protect public health and safety as determined in the sole discretion of those persons or entities identified in Section 10.18.040 of this Chapter; and .03 Any use of Recycled Water.
.040 The mandatory provisions of Sections 10.18.080, 10.18.090, and 10.18.100 shall not apply to the application of potable water to a food source between the hours of 9 a.m. and 5 p.m.; provided that the potable water is applied through drip irrigation or a hand-held hose with a self-closing water shut-off device. (Ord. 6332 § 2 (part); May 19, 2015.)

10.18.030 DEFINITIONS.

Unless specifically defined in this section, words or phrases used in this chapter shall be interpreted so as to give them the meaning they have in common usage and to give this Chapter the most reasonable application. .010 “Alternative Compliance Plan” means a plan approved in accordance with Section 10.18.110 of this Chapter. .020 “City” means the City of Anaheim located in California. .030 “City Council” means the governing legislative body of the City. .040 “Code” means the municipal code of the City.
.050 “Customer” has the meaning set forth in Rule 1 of the Rates, Rules and Regulations, or any successor provision thereto.
.060 “Department” means the Public Utilities Department of the City. .070 “Eligible Weather-Based Irrigation Controllers” means those eligible weather-based irrigation controllers registered with the Department and approved by the Metropolitan Water District of Southern California or the Irrigation Association Smart Water Application Technologies initiative.
.080 “General Manager” means the General Manager of the Department. .090 “Large Landscape Area” means an area of vegetation at least three (3) acres in size supporting a business necessity or public benefit uses, including without limitation, parks, golf courses, schools, and cemeteries. .100 “Local Emergency” has the meaning set forth in section 8558(c) of the California Government Code, or any successor provision thereto. The City Council may declare a Local Emergency by motion or resolution. .110 “Public Utilities Hearing Board” means that hearing board described in Subsection .080 of Section 1.04.730 of the Anaheim Municipal Code.
.120 “Rates, Rules and Regulations” means the rate structure, the rules, and any regulations as approved by the City Council, governing the use and delivery of water within the Department’s service area. .130 “Recycled Water” means water that is approved for purposes other than human consumption and meets the criteria set forth in Division 4 of Title 22 of the California Code of Regulations, as may be amended from time to time. Recycled Water does not include gray water.
.140 “Sidewalk” means that portion of the roadway, set apart by curbs, barriers, markings or other delineation for pedestrian travel.
.150 “Water Reduction Plan” means a plan set forth in this ordinance to address a water supply shortage or a water shortage emergency as declared by the City Council in accordance with 10.18.050 of this Chapter. Specifically, these plans are contained in Sections 10.18.070 through 10.18.100.
.160 “Water System” has the meaning set forth in Rule 1 of the Rates, Rules and Regulations or any successor provision thereto. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 5855 §§ 14, 15; April 29, 2003: Ord. 6138 § 1 (part); April 14, 2009:

Ord. 6332 § 2 (part); May 19, 2015.)

10.18.040 AUTHORIZATION.

Except where expressly delegated to a specific officer, department, or commission of the City, the various officers, departments, or commissions of the City are authorized and directed to implement the applicable provisions of this Chapter upon the effective date hereof. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.050 WATER REDUCTION PLAN IMPLEMENTATION.
.010 The Department shall monitor and evaluate the projected water supply and demands and, when it deems appropriate, the Department shall recommend to the City Council a Water Reduction Plan to address either a water supply shortage or a water shortage emergency. In a water supply shortage, the City Council may, by resolution, order implementation of Water Reduction Plan I, Water Reduction Plan II, or Water Reduction Plan III; provided, the City Council makes the findings required by the applicable sections of this Chapter. The City Council may, by resolution or motion as specified in Section 10.18.100, order implementation of Water Reduction Plan IV; provided, the City Council declares a water shortage emergency in accordance with California Water Code section 350. .020 At any time, the City Council may, by resolution, discontinue any Water Reduction Plan. The City Council may also implement another Water Reduction Plan; provided, the City Council adopts that Water Reduction Plan pursuant to Subsection .010 of Section 10.18.050 of this Chapter. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 5855 § 17; April 29, 2003: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.060 VOLUNTARY WATER CONSERVATION MEASURES.

In order to conserve water when a Water Reduction Plan is not in effect, the City encourages all persons and entities within the City and all Customers outside of the City to practice good potable water use by avoiding the following water wasting activities on a voluntary basis:
.010 The application of potable water to outdoor ornamental landscaping or turf in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures; .020 The use of a hose that dispenses potable water to wash a motor vehicle, except where the hose is fitted with a shut- off nozzle or device attached to it that causes it to cease dispensing water immediately when not in use; .030 The application of potable water to driveways and Sidewalks; .040 The use of potable water in a fountain or other decorative water feature, except where the water is part of a recirculating system; and
.050 The failure to promptly repair all potable water leaks from indoor and outdoor plumbing fixtures, including but not limited to sprinkler systems. (Ord. 6332 § 2 (part); May 19, 2015.)

10.18.070 WATER REDUCTION PLAN I—ADDITIONAL VOLUNTARY WATER CONSERVATION MEASURES.

The City Council may, by resolution, order the implementation of Water Reduction Plan I upon a finding that a “Mild Water Shortage” exists and additional voluntary water conservation measures may assist in appropriately responding to this shortage. A “Mild Water Shortage” exists, when, due to a drought or other conditions, water supplies have been impacted and there is a reasonable probability of more severe water shortages in the future. When the City Council orders a Water Reduction Plan I, all persons and entities within the City and all Customers outside of the City are encouraged to voluntarily practice good potable water use by observing the following:
.010 Avoid (a) the water wasting activities contained in Section 10.18.060 of this Chapter; (b) the application of potable water to outdoor ornamental landscaping or turf between the hours of nine a.m. and six p.m., except as necessary for irrigation system maintenance and repairs; and (c) the application of potable water to outdoor landscapes during or within 48 hours after measurable rainfall; and
.020 Perform such other voluntary measures adopted by the City Council. .030 Except as necessary for irrigation system maintenance or repairs, limit the application of potable water to outdoor ornamental landscaping or turf to no more than three (3) days per week; provided such irrigation occurs (a) Monday, Wednesday, or Saturday for odd-numbered street addresses; and (b) Tuesday, Thursday, or Sunday for even-numbered street addresses. Street addresses ending in 1/2 or any fraction shall conform to the permitted uses for the last whole number in the address. In addition to the foregoing, the application of potable water is encouraged to be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers);
.02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or
.03 No limitation on maximum watering minutes per watering station per permitted water day for water efficient drip irrigation. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.080 WATER REDUCTION PLAN II—MANDATORY MEASURES.

The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan II upon a finding, that an “Elevated Water Shortage” exists and the mandatory measures are necessary to address this shortage. An “Elevated Water Shortage” exists when, due to a prolonged drought, a declared “State of emergency” under California Government Code section 8558(b), or other water supply condition, a reduction in water use is necessary to safeguard the public health, safety, and welfare. When the City Council orders the implementation of Water Reduction Plan II, all persons and entities within the City and all Customers outside of the City shall comply with the following:
.010 Each of the following actions is prohibited, except where necessary to address an immediate health and safety need, including fire mitigation requirements as determined by the City Fire Department or other fire authority with jurisdiction, or to comply with a term or condition in a permit issued by a state or federal agency:
.01 The application of potable water to outdoor ornamental landscaping or turf in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures; .02 The use of a hose that dispenses potable water to wash a motor vehicle, except where the hose is fitted with a shutoff nozzle or device attached to it that causes it to cease dispensing water immediately when not in use; .03 The application of potable water to driveways and Sidewalks; .04 The use of potable water in a fountain or other decorative water feature, except where the water is part of a recirculating system;
.05 The failure to promptly repair all potable water leaks from indoor and outdoor plumbing fixtures, including but not limited to sprinkler systems;
.06 The application of potable water to outdoor ornamental landscaping or turf between the hours of nine a.m. and six p.m., except as necessary for spot watering with a hose to maintain trees or plants (other than turf), and irrigation system maintenance and repairs;
.07 The application of potable water to outdoor landscapes during or within forty-eight (48) hours after measurable rainfall; and
.08 The serving of potable water other than upon request in eating or drinking establishments, including but not limited to restaurants, hotels, cafes, cafeterias, bars, or other public places where food or drink are served and/or purchased. .020 Operators of hotels and motels shall provide guests with the option of choosing not to have towels and linens laundered daily. The hotel or motel shall prominently display notice of this option in each bathroom using clear and easily understood language.
.030 The application of potable water to outdoor ornamental landscaping or turf shall be limited to no more than three (3) days per week, except (a) as necessary for spot watering with a hose to maintain trees or plants (other than turf) and irrigation system maintenance or repairs; or (b) for a Large Landscape Area with an Alternative Compliance Plan. In connection with the foregoing, the application of potable water shall only occur on (a) Monday, Wednesday, or Saturday for odd-numbered street addresses; and (b) Tuesday, Thursday, or Sunday for even-numbered street addresses. Street addresses ending in 1/2 or any fraction shall conform to the permitted uses for the last whole number in the address. In certain special circumstances, a person or entity may deviate from the foregoing designated days; provided that person obtains an Alternative Compliance Plan in accordance with Subsection .020 of Section 10.18.110. In addition to the foregoing, the application of potable water shall be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers);
.02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or
.03 No limitation on maximum water minutes per watering station per permitted water day for water efficient drip irrigation.
.040 For the avoidance of doubt, the term “plants” within Subsections .10 and .030 of Section 10.18.080 does not include turf. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.090 WATER REDUCTION PLAN III—MANDATORY MEASURES.

The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan III upon a finding, that a “Severe Water Shortage” exists and the mandatory measures are necessary to address this shortage. A “Severe Water Shortage” exists when, due to a prolonged drought, a declared “State of emergency” under California Government Code section 8558(b), or other water supply condition, a reduction in water use is necessary to safeguard the public health, safety, and welfare. When the City Council orders the implementation of Water Reduction Plan III, all persons and entities within the City and all Customers outside of the City shall comply with the following:
.010 All mandatory measures contained in Subsections .010 and .020 of Section 10.18.080, except to the extent those measures conflict. If such a conflict exists, all persons or entities within the City and all Customers outside of the City shall adhere to the more restrictive section of those conflicting sections. .020 The application of potable water to outdoor ornamental landscaping or turf shall be limited to no more than two (2) days per week, except (a) as necessary for spot watering with a hose to maintain trees or plants (other than turf) and irrigation system maintenance or repairs; or (b) for a Large Landscape Area with an Alternative Compliance Plan. In connection with the foregoing, the application of potable water shall only occur on (a) Tuesday or Saturday for oddnumbered street addresses; and (b) Thursday or Sunday for even-numbered street addresses. Street addresses ending in 1/2 or any fraction shall conform to the permitted uses for the last whole number in the address. In certain special circumstances, a person or entity may deviate from the foregoing designated days; provided that person obtains an Alternative Compliance Plan in accordance with Subsection .020 of Section 10.18.110. In addition to the foregoing, the application of potable water shall be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers);
.02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or
.03 No limitation on maximum water minutes per watering station per permitted water day for water efficient drip irrigation.
.030 For the avoidance of doubt, the term “plants” within Subsection .020 of Section 10.18.090 does not include turf. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.)

10.18.100 WATER REDUCTION PLAN IV—MANDATORY MEASURES.
.010 The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan IV, when the City Council determines an "Emergency Water Shortage" exists and makes the findings for a water shortage emergency under California Water Code section 350. When the City Council orders the implementation of Water Reduction Plan IV, all persons and entities within the City and all Customers outside of the City shall comply with the following:
.01 All mandatory measures contained in Subsections .010 and .020 of Section 10.18.080, except to the extent those measures conflict. If such a conflict exists, all persons or entities within the City and all Customers outside of the City shall adhere to the more restrictive section of those conflicting sections. .02 The application of potable water to outdoor ornamental landscaping or turf is prohibited at any time. .020 The City Council may, by resolution or motion, order the implementation of Water Reduction Plan IV, when the City Council determines a non- drought Local Emergency exists. (Ord. 6332 § 2 (part); May 19, 2015.)

18.10.110 ALTERNATIVE COMPLIANCE PLAN.
.010 Any person or entity with a Large Landscape Area may deviate from Subsection .030 of Section 10.18.080 and Subsection .020 of 10.18.090; provided such person or entity obtains an Alternative Compliance Plan approved by the General Manager or designee. At a minimum, an Alternative Compliance Plan must require the person or entity with a Large Landscape Area to (a) install and maintain throughout the duration of the plan Eligible Weather-Based Irrigation Controllers within the Large Landscape Area; (b) reduce overall potable water use by an amount equal to that amount set forth in the Alternative Compliance Plan; and (c) must use recycled water if it is available from the Department. The General Manager or designee may require revisions to the Alternative Compliance Plan in the event the State Water Resources Control Board sets a new water conservation standard for the City. Once the General Manager or designee approves the Alternative Compliance Plan or any amendments thereto, the person or entity with such a plan shall strictly comply with its provisions. .020 Any person or entity may deviate from the designated watering days of the week in Subsection .030 of Section

10.18.080 and Subsection .020 of Section 10.18.090; provided such person or entity obtains an Alternative Compliance Plan approved by the General Manager or designee. The General Manager or designee shall only approve such an Alternative Compliance Plan when the General Manager or designee makes all of the following findings: (a) that the deviation does not constitute a grant of special privilege inconsistent with the limitations upon other residents and businesses; (b) that because of special circumstances applicable to the property or its use, the water day designation will have a disproportionate impact on the property or use that exceeds the impacts to residents and businesses generally; (c) that the authorizing of such deviation will not be of substantial detriment to adjacent properties, and will not materially affect the ability of the City to effectuate the purpose of this ordinance and will not be detrimental to the public interest; and (d) that the condition or situation of the subject property or the intended use of the property for which the waiver is sought is not common, recurrent or general in nature. If approved by the General Manager or designee, the Alternative Compliance Plan of that person or entity shall solely authorize the person to deviate from the designated watering days of the week, and no such approval shall authorize any deviation from the limitation on the number of watering days per week. .030 In the event the General Manager or designee disapproves a request for an Alternative Compliance Plan under Subsections .010 and .020 of this Section, such person or entity who receives such notice may appeal this determination to the Public Utilities Hearing Board within five (5) days of the written notice of the decision of the General Manager or designee. On appeal, the Public Utilities Hearing Board shall review the determination and render a final non-appealable decision.
.040 If the General Manager or designee determines any person or entity fails to comply with their Alternative Compliance Plan, the General Manager or designee may issue a notice to comply requiring strict compliance with the Alternative Compliance Plan (a) by the end of the next billing cycle for a Customer; or (b) within sixty (60) days for a nonCustomer. If the person or entity fails to comply with the notice to comply, the General Manager or designee may terminate that Alternative Compliance Plan with five (5) days prior written notice and, in such case, that person or entity shall no longer deviate from Subsection .030 of Section 10.18.080 and Subsection .020 of Section 10.18.090 and shall immediately comply with these subsections. Any person or entity who receives such notice may appeal this determination to the Public Utilities Hearing Board within five (5) days of the written notice to terminate. On appeal, the Public Utilities Hearing Board shall review the determination to terminate the Alternative Compliance Plan and render a final non-appealable decision. (Ord. 6332 § 2 (part); May 19, 2015.)

10.18.120 WATER CONSERVATION RATE.

The City may adopt a rate structure designed to reduce water consumption in accordance with the requirements of State law. (Ord. 6332 § 2 (part); May 19, 2015.)

10.18.130 VIOLATIONS AND REMEDIES.
.010 It shall be unlawful for any person to willfully violate the mandatory provisions of this Chapter 10.18. A violation of any mandatory provision of this Chapter 10.18 shall be a misdemeanor and shall be punishable upon conviction as authorized by Section 1.01.370 of the Municipal Code, or any successor provision thereto. .020 In addition to any remedies or enforcement measures provided by State law or in this Chapter 10.18, any violation of this chapter 10.18 is subject to civil fines in accordance with Chapter 1.20 of the Municipal Code, or any successor provision thereto.
.030 In addition to any other remedies provided in this Code or available under applicable law, the City can alternatively seek injunctive relief in the Superior Court or other take enforcement actions for violations of this chapter 10.18. (Ord. 6332 § 2 (part); May 19, 2015.)

10.18.140 RESERVATION OF RIGHTS.

The rights of the Department hereunder shall be cumulative to any other right of the Department to discontinue service. (Ord. 5204 § 1 (part); February 26, 1991: Ord. 6138 § 1 (part); April 14, 2009: Ord. 6332 § 2 (part); May 19, 2015.) ORDINANCE NO. 6332

AN ORDINANCE OF THE CITY OF ANAHEIM
AMENDING CHAPTER 10.18 OF TITLE 10 OF THE

ANAHEIM MUNICIPAL CODE RELATING TO

ANAHEIM'S WATER CONSERVATION AND WATER

SHORTAGE CONTINGENCY RULES AND

REGULATIONS AND BASED UPON THE FINDING AND

DETERMINATION THAT SAID ORDINANCE IS NOT

SUBJECT TO THE CALIFORNIA ENVIRONMENTAL

QUALITY ACT (CEQA) PURSUANT TO CALIFORNIA
WATER CODE SECTION 10652.

WHEREAS, California Constitution article X, section 2 and California Water Code section 100 provide that because of conditions prevailing in the state of California (the "State"), it is the declared policy of the State that the general welfare requires that the water resources of the State shall be put to beneficial use to the fullest extent of which they are capable, the waste or unreasonable use of water shall be prevented, and the conservation of such waters is to be exercised with a view to the reasonable and beneficial use thereof in the interest of the people and the public welfare; and
WHEREAS, pursuant to California Water Code section 106, it is the declared policy of the State that the use of water for domestic use is the highest use of water and that the next highest use is for irrigation; and
WHEREAS, on January 17, 2014, Governor Brown issued a drought emergency proclamation following three dry or critically dry years in California, and, on April 25, 2014, the Governor signed an executive order ("2014 Executive Order") calling on the State government to redouble its drought actions; and
WHEREAS, the 2014 Executive Order provided that the State Water Resources Control Board ("State Water Board") shall direct urban water suppliers that are not already implementing drought response plans to limit outdoor irrigation and wasteful water practices; the 2014 Executive Order also directed the State Water Board to adopt emergency regulations as it deems necessary, pursuant to California Water Code section 1 058.5; and WHEREAS, in connection with the foregoing, the State Water Board found that California has been subject to multi-year droughts in the past; and it also found that the Southwestern United States is becoming drier, increasing the likelihood of prolonged droughts; and
WHEREAS, in response, the State Water Board adopted mandatory water conservation measures under Resolution No. 2014-0038, including, among things, the following prohibitions: the application of potable water to outdoor landscapes in a manner that causes visible runoff, the use of a hose to wash a motor vehicle except where the hose is equipped with a shut-off nozzle, the application of water to driveways and sidewalks, and the use of potable water in non-recirculating ornamental fountains; and
WHEREAS, on August 12, 2014, the City of Anaheim ("Anaheim") adopted mandatory conservation measures in conformance with Resolution No. 2014-0038; and WHEREAS, although Resolution No. 2014-0038 was set to expire on April 25, 2015, the State Water Board adopted Resolution No. 2015-0013 on March 17, 2015 based on findings that there existed a water shortage emergency and the fourth year of significant drought conditions have resulted in severe impacts to the State's water supplies and its ability to meet all of its water demands; and
WHEREAS, in adopting Resolution No. 2015-0013, the State Water Board also found as of March 3, 2015, snow water equivalents for the Northern, Central, and Southern Sierra regions were at 16 percent, 20 percent, and 21 percent of normal for that date, respectively; and WHEREAS, the State Water Board further found that most reservoirs are less than 60 percent full and January 2015 was one of the driest Januaries ever recorded in California history and that many communities face the prospect of needing emergency drinking water supplies; and
WHEREAS, based on these findings, the State Water Board, through Resolution No. 2015-0013, continued the mandatory water conservation measures with some modifications and additions, and it also required urban water suppliers, like Anaheim, to implement mandatory restrictions on the number of days that outdoor irrigation of ornamental landscapes or turf with potable water is allowed; and
WHEREAS, on April 1,2015, Governor Brown issued Executive Order B-29-15 finding that conditions of extreme peril to the safety of persons and property continue to exist in California due to water shortage and drought conditions; and WHEREAS, Executive Order B-29-15 also directed the State Water Board to impose restrictions to achieve an aggregate statewide 25% reduction in potable water use through February 2016; moreover, the order requires the State Water Board to adopt and impose additional regulations related to outside irrigation of newly constructed homes and buildings and the reduction of potable water usage by commercial, industrial, and institutional properties; and WHEREAS, on June 7, 2011, the Anaheim City Council adopted Anaheim's 2010 urban water management plan ("Urban Water Management Plan") in compliance with the California Water Code; and
WHEREAS, the Urban Water Management Plan contained Anaheim's Water Shortage Contingency Plan ("Water Shortage Contingency Plan") which incorporated Chapter

10.18 of the Anaheim Municipal Code; and
WHEREAS, Anaheim is authorized to prescribe and define by ordinance restrictions, prohibitions, and exclusions for the use of water during a threatened or existing water shortage and adopt and enforce a water conservation and regulatory program to: (i) prohibit the wastage of Anaheim water or the use of Anaheim water during such period; (ii) prohibit use of water during such periods for specific uses which the Anaheim may from time to time find 2 nonessential; and (iii) reduce and restrict the· quantity of water used by those persons within Anaheim for the purpose of conserving the water supplies of Anaheim; and WHEREAS, pursuant to California Water Code section 350, the Anaheim City Council is authorized to declare a water shortage emergency to prevail within its jurisdiction; and WHEREAS, pursuant to California Water Code section 375, Anaheim is also authorized to adopt and enforce a water conservation program and water shortage supply measures to reduce the quantity of water used by persons within its jurisdiction for the purpose of conserving the water supplies of Anaheim; and
WHEREAS, based on the above recitals and anticipated worsening water supply conditions, the Anaheim City Council believes it is necessary to amend Chapter 10.18 of the Anaheim Municipal Code so that Anaheim can better combat these conditions with additional tools; and
WHEREAS, through this ordinance, the Anaheim City Council also desires to declare the existence of a Severe Water Shortage within Anaheim and implement Water Reduction Plan III based on the prolonged drought and the Governor declared "State of emergency" under California Government Code section 8558(b); and WHEREAS, the purpose of the Severe Water Shortage declaration and implementation of Water Reduction Plan III is to reduce the quantity of water used by consumers to protect the public health, welfare, and safety by ensuring there is sufficient water for human consumption, sanitation, and fire protection; and
WHEREAS, Anaheim City Council hereby finds and determines that it is desirable to codify the rules and regulations governing its actions, and the actions of persons using and consuming water within Anaheim, particularly during declared water supply shortages and water shortage emergencies, to protect the general welfare and the Anaheim's water supplies, and to reduce water consumption in accordance with the declared policies and laws of the State.

NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF ANAHEIM DOES ORDAIN AS FOLLOWS:

SECTION 1. RECITALS.

The Anaheim City Council hereby finds and determines that the above recitals are true and correct and incorporated herein.

SECTION 2.

That Chapter 10.18 of Title 10 of the Anaheim Municipal Code, is and shall be renamed and amended in its entirety to read as follows:
3 "Chapter 10.18 WATER CONSERVATION AND WATER SHORTAGE

CONTINGENCY RULES AND REGULATIONS
Sections:

10.18.010

10.18.020

10.18.030

10.18.040

10.18.050

10.18.060

10.18.070

10.18.080

10.18.090

10.18.100

10.18.110

10.18.120

10.18.130

10.18.140
Purpose.

Scope of this Chapter.

Definitions
Authorization.

Water Reduction Plan Implementation.

Voluntary Water Conservation Measures.

Water Reduction Plan I - Additional Voluntary Water Conservation Measures.

Water Reduction Plan II - Mandatory Measures.

Water Reduction Plan III - Mandatory Measures.

Water Reduction Plan IV - Mandatory Measures.

Alternative Compliance Plan.

Water Conservation Rate.

Violations and Remedies.

Reservation of Rights.

10.18.010 PURPOSE.

The City Council finds and determines that because of prevailing water supply conditions within the State of California and the declared policy of the State, it is necessary and appropriate for the City to adopt, implement, and enforce water conservation rules and regulations to reduce water consumption within the City through conservation to ensure the reasonable and beneficial use of water and maximize its efficient use within the City. The City Council further finds and determines it is necessary and appropriate for the City to implement and enforce water shortage contingency rules and regulations during periods of water supply shortages and water shortage . emergencies to ensure that there is sufficient water for human consumption, sanitation, and fire protection.

10.18.020 SCOPE OF THIS CHAPTER.
.010 Except as expressly stated within this Chapter, the provisions of this Chapter shall apply to all persons, entities and property within the City. In addition, this chapter shall apply to any Customer's outside of the City .
. 020 The provisions of this Chapter are in addition to, and not in lieu of, the provisions of Section 10.16.380 of this Code relating to curtailed supply of electricity or water. .030 The provisions of this Chapter shall not apply to the following water uses:
4 .01 Any use of water necessary for (a) the testing and maintenance of the Water System or City fire suppression system, or (b) fire suppression or other similar emergency services affecting the public health and safety;
.02 Any use of water necessary to protect public health and safety as determined in the sole discretion of those persons or entities identified in Section 10.18.040 of this Chapter; and
.03 Any use of Recycled Water.
.040 The mandatory provisions of Sections 10.18.080, 10.18.090, and 10.18.1 00 shall not apply to the application of potable water to a food source between the hours of 9 a.m. and 5 p.m.; provided that the potable water is applied through drip irrigation or a hand-held hose with a self-closing water shut-off device.

10.18.030 DEFINITIONS.

10.18.110 of this Chapter.
.020 "City" means the City of Anaheim located in California . . 030 "City Council" means the governing legislative body of the City . . 040 "Code" means the municipal code of the City .
. 050 "Customer" has the meaning set forth in Rule 1 of the Rates, Rules and Regulations, or any successor provision thereto .
. 060 "Department" means the Public Utilities Department of the City . . 070 "Eligible Weather-Based Irrigation Controllers" means those eligible weatherbased irrigation controllers registered with the Department and approved by the Metropolitan Water District of Southern California or the Irrigation Association Smart Water Application Technologies initiative .
. 080 "General Manager" means the General Manager of the Department. .090 "Large Landscape Area" means an area of vegetation at least three (3) acres in size supporting a business necessity or public benefit uses, including without limitation, parks, golf courses, schools, and cemeteries.
5 .100 "Local Emergency" has the meaning set forth in section 8558( c) of the California Government Code, or any successor provision thereto. The City Council may declare a Local Emergency by motion or resolution .
. 110 "Public Utilities Hearing Board" means that hearing board described in Subsection .080 ofSection1.04.730 of the Anaheim Municipal Code .
. 120 "Rates, Rules and Regulations" means the rate structure, the rules, and any regulations as approved by the City Council, governing the use and delivery of water within the Department's service area .
. 130 "Recycled Water" means water that is approved for purposes other than human consumption and meets the criteria set forth in Division 4 of Title 22 of the California Code of Regulations, as may be amended from time to time. Recycled Water does not include gray water. .140 "Sidewalk" means that portion of the roadway, set apart by curbs, barriers, markings or other delineation for pedestrian travel.
.150 "Water Reduction Plan" means a plan set forth in this ordinance to address a water supply shortage or a water shortage emergency as declared by the City Council in accordance with 10.18.050 of this Chapter. Specifically, these plans are contained in Sections 10.18.070 through 10.18.1 00 .
. 160 "Water System" has the meaning set forth in Rule 1 of the Rates, Rules and Regulations or any successor provision thereto.

10.18.040 AUTHORIZATION.

10.18.050 WATER REDUCTION PLAN IMPLEMENTATION.
.010 The Department shall monitor and evaluate the projected water supply and demands and, when it deems appropriate, the Department shall recommend to the City Council a Water Reduction Plan to address either a water supply shortage or a water shortage emergency. In a water supply shortage, the City Council may, by resolution, order implementation of Water Reduction Plan I, Water Reduction Plan II, or Water Reduction Plan III; provided, the City Council makes the findings required by the applicable sections of this Chapter. The City Council may, by resolution or motion as specified in Section 10.18.100, order implementation of Water Reduction Plan IV; provided, the City Council declares a water shortage emergency in accordance with California Water Code section 350 .
. 020 At any time, the City Council may, by resolution, discontinue any Water Reduction Plan. The City Council may also implement another Water Reduction Plan; provided, 6 the City Council adopts that Water Reduction Plan pursuant to Subsection .010 of Section

10.18.050 of this Chapter.

10.18.060 VOLUNTARY WATER CONSERVATION MEASURES.

In order to conserve water when a Water Reduction Plan is not in effect, the City encourages all persons and entities within the City and all Customers outside of the City to practice good potable water use by avoiding the following water wasting activities on a voluntary basis:
.010 The application of potable water to outdoor ornamental landscaping or turf in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures; .020 The use of a hose that dispenses potable water to wash a motor vehicle, except where the hose is fitted with a shut-off nozzle or device attached to it that causes it to cease dispensing water immediately when not in use;
.030 The application of potable water to driveways and Sidewalks; .040 The use of potable water in a fountain or other decorative water feature, except where the water is part of a recirculating system; and
.050 The failure to promptly repair all potable water leaks from indoor and outdoor plumbing fixtures, including but not limited to sprinkler systems.

10.18.070 WATER REDUCTION PLAN I - ADDITIONAL VOLUNTARY WATER CONSERVATION MEASURES.

The City Council may, by resolution, order the implementation of Water Reduction Plan I upon a finding that a "Mild Water Shortage" exists and additional voluntary water conservation measures may assist in appropriately responding to this shortage. A "Mild Water Shortage" exists, when, due to a drought or other conditions, water supplies have been impacted and there is a reasonable probabili.ty of more severe water shortages in the future. When the City Council orders a Water Reduction Plan I, all persons and entities within the City and all Customers outside of the City are encouraged to voluntarily practice good potable water use by observing the following:
.010 Avoid (a) the water wasting activities contained in Section 10.l8.060 of this Chapter; (b) the application of potable water to outdoor ornamental landscaping or turf between the hours of nine a.m. and six p.m., except as necessary for irrigation system maintenance and repairs; and (c) the application of potable water to outdoor landscapes during or within 48 hours after measurable rainfall; and
.020 Perform such other voluntary measures adopted by the City Council. 7 .030 Except as necessary for irrigation system maintenance or repairs, limit the application of potable water to outdoor ornamental landscaping or turf to no more than three (3) days per week; provided such irrigation occurs (a) Monday, Wednesday, or Saturday for oddnumbered street addresses; and (b) Tuesday, Thursday, or Sunday for even-numbered street addresses. Street addresses ending in liz or any fraction shall conform to the permitted uses for the last whole number in the address. In addition to the foregoing, the application of potable water is encouraged to be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers); .02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or .03 No limitation on maximum watering minutes per watering station per permitted water day for water efficient drip irrigation.

10.18.080 WATER REDUCTION PLAN II -MANDATORY MEASURES.

The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan II upon a finding, that an "Elevated Water Shortage" exists and the mandatory measures are necessary to address this shortage. An "Elevated Water Shortage" exists when, due to a prolonged drought, a declared "State of emergency" under California Government Code section 8558(b), or other water supply condition, a reduction in water use is necessary to safeguard the public health, safety, and welfare. When the City Council orders the implementation of Water Reduction Plan II, all persons and entities within the City and all Customers outside of the City shall comply with the following:
.010 Each of the following actions is prohibited, except where necessary to address an immediate health and safety need, including fire mitigation requirements as determined by the City Fire Department or other fire authority with jurisdiction, or to comply with a term or condition in a permit issued by a state or federal agency:
.01 The application of potable water to outdoor ornamental landscaping or turf in a manner that causes runoff such that water flows onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures; .02 The use of a hose that dispenses potable water to wash a motor vehicle, except where the hose is fitted with a shut-off nozzle or device attached to it that causes it to cease dispensing water immediately when not in use;
.03 The application of potable water to driveways and Sidewalks; .04 The use of potable water in a fountain or other decorative water feature, except where the water is part of a recirculating system; 8 .05 The failure to promptly repair all potable water leaks from indoor and outdoor plumbing fixtures, including but not limited to sprinkler systems; .06 The application of potable water to outdoor ornamental landscaping or turf between the hours of nine a.m. and six p.m., except as necessary for spot watering with a hose to maintain trees or plants (other than turf), and irrigation system maintenance and repairs; .07 The application of potable water to outdoor landscapes during or within forty-eight (48) hours after measurable rainfall; and
.08 The serving of potable water other than upon request in eating or drinking establishments, including but not limited to restaurants, hotels, cafes, cafeterias, bars, or other public places where food or drink are served and/or purchased . . 020 Operators of hotels and motels shall provide guests with the option of choosing not to have towels and linens laundered daily. The hotel or motel shall prominently display notice of this option in each bathroom using clear and easily understood language . . 030 The application of potable water to outdoor ornamental landscaping or turf shall be limited to no more than three (3) days per week, except (a) as necessary for spot watering with a hose to maintain trees or plants (other than turf) and irrigation system maintenance or repairs; or (b) for a Large Landscape Area with an Alternative Compliance Plan. In connection with the foregoing, the application of potable water shall only occur on (a) Monday, Wednesday, or Saturday for odd-numbered street addresses; and (b) Tuesday, Thursday, or Sunday for evennumbered street addresses. Street addresses ending in Yz or any fraction shall conform to the permitted uses for the last whole number in the address. In certain special circumstances, a person or entity may deviate from the foregoing designated days; provided that person obtains an Alternative Compliance Plan in accordance with Subsection .020 of Section 10.18.110. In addition to the foregoing, the application of potable water shall be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers); .02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or .03 No limitation on maximum water minutes per watering station per permitted water day for water efficient drip irrigation . . 040 For the avoidance of doubt, the term "plants" within Subsections .10 and .030 of Section 10.18.080 does not include turf.

10.18.090 WATER REDUCTION PLAN III - MANDATORY MEASURES.

The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan III upon a finding, that a "Severe Water Shortage" exists and the mandatory 9 measures are necessary to address this shortage. A "Severe Water Shortage" exists when, due to a prolonged drought, a declared "State of emergency" under California Government Code section 8558(b), or other water supply condition, a reduction in water use is necessary to safeguard the public health, safety, and welfare. When the City Council orders the implementation of Water Reduction Plan III, all persons and entities within the City and all Customers outside of the City shall comply with the following:
.010 All mandatory measures contained in Subsections .010 and .020 of Section

10.18.080, except to the extent those measures conflict. If such a conflict exists, all persons or entities within the City and all Customers outside of the City shall adhere to the more restrictive section of those conflicting sections .
. 020 The application of potable water to outdoor ornamental landscaping or turf shall be limited to no more than two (2) days per week, except (a) as necessary for spot watering with a hose to maintain trees or plants (other than turf) and irrigation system maintenance or repairs; or (b) for a Large Landscape Area with an Alternative Compliance Plan. In connection with the foregoing, the application of potable water shall only occur on (a) Tuesday or Saturday for oddnumbered street addresses; and (b) Thursday or Sunday for even-numbered street addresses.

Street addresses ending in Yz or any fraction shall conform to the permitted uses for the last whole number in the address. In certain special circumstances, a person or entity may deviate from the foregoing designat~d days; provided that person obtains an Alternative Compliance Plan in accordance with Subsection .020 of Section 10.18.110. In addition to the foregoing, the application of potable water shall be limited to:
.01 No more than eight (8) minutes per permitted watering day per station for non-conserving nozzles (e.g., spray head sprinklers and bubblers); .02 No more than fifteen (15) minutes per cycle and up to two (2) cycles per permitted watering day per station for high efficiency sprinkler nozzles; or .03 No limitation on maximum water minutes per watering station per permitted water day for water efficient drip irrigation . . 030 For the avoidance of doubt, the term "plants" within Subsection .020 of Section

10.18.090 does not include turf.

10.18.100 WATER REDUCTION PLAN IV - MANDATORY MEASURES. .10 The City Council may, by resolution or ordinance, order the implementation of Water Reduction Plan IV, when the City Council determines an "Emergency Water Shortage" exists and makes the findings for a water shortage emergency under California Water Code section 350. When the City Council orders the implementation of Water Reduction Plan IV, all persons and entities within the City and all Customers outside of the City shall comply with the following:
10 .01 All mandatory measures contained in Subsections .010 and .020 of Section

10.18.110 AL TERNATIVE COMPLIANCE PLAN.
.010 Any person or entity with a Large Landscape Area may deviate from Subsection .030 of Section 10.18.080 and Subsection .020 of 10.18.090; provided such person or entity obtains an Alternative Compliance Plan approved by the General Manager or designee. At a minimum, an Alternative Compliance Plan must require the person or entity with a Large Landscape Area to~a) install and maintain throughout the duration of the plan Eligible WeatherBased Irrigation Controllers within the Large Landscape Area; (b) reduce overall potable water use by an amount equal to that amount set forth in the Alternative Compliance Plan; and (c) must use recycled water if it is available from the Department. The General Manager or designee may require revisions to the Alternative Compliance Plan in the event the State Water Resources Control Board sets a new water conservation standard for the City. Once the General Manager or designee approves the Alternative Compliance Plan or any amendments thereto, the person or entity with such a plan shall strictly comply with its provisions . . 020 Any person or entity may deviate from the designated watering days of the week in Subsection .030 of Section 10.18.080 and Subsection .020 of Section 10.18.090; provided such person or entity obtains an Alternative Compliance Plan approved by the General Manager or designee. The General Manager or designee shall only approve such an Alternative Compliance Plan when the General Manager or designee makes all of the following findings: (a) that the deviation does not constitute a grant of special privilege inconsistent with the limitations upon other residents and businesses; (b) that because of special circumstances applicable to the property or its use, the water day designation will have a disproportionate impact on the property or use that exceeds the impacts to residents and businesses generally; (c) that the authorizing of such deviation will not be of substantial detriment to adjacent properties, and will not materially affect the ability of the City to effectuate the purpose of this ordinance and will not be detrimental to the public interest; and (d) that the condition or situation of the subject property or the intended use of the property for which the waiver is sought is not common, recurrent or general in nature.

If approved by the General Manager or designee, the Alternative Compliance Plan of that person or entity shall solely authorize the person to deviate from the designated watering days of the week, and no such approval shall authorize any deviation from the limitation on the number of watering days per week .
. 030 In the event the General Manager or designee disapproves a request for an Alternative Compliance Plan under Subsections .010 and .020 of this Section, such person or 11 entity who receives such notice may appeal this determination to the Public Utilities Hearing Board within five (5) days of the written notice of the decision of the General Manager or designee. On appeal, the Public Utilities Hearing Board shall review the determination and render a final non-appealable decision .
. 040 If the General Manager or designee determines any person or entity fails to comply with their Alternati ve Compliance Plan, the General Manager or designee may issue a notice to comply requiring strict compliance with the Alternative Compliance Plan (a) by the end of the next billing cycle for a Customer; or (b) within sixty (60) days for a non-Customer. If the person or entity fails to comply with the notice to comply, the General Manager or designee may terminate that Alternative Compliance Plan with five (5) days prior written notice and, in such case, that person or entity shall no longer deviate from Subsection .030 of Section 10.18.080 and Subsection .020 of Section 10.18.090 and shall immediately comply with these subsections. Any person or entity who receives such notice may appeal this determination to the Public Utilities Hearing Board within five (5) days of the written notice to terminate. On appeal, the Public Utilities Hearing Board shall review the determination to terminate the Alternative Compliance Plan and render a final non-appealable decision.

10.18.120 WATER CONSERVATION RATE.

The City may adopt a rate structure designed to reduce water consumption in accordance with the requirements of State law.

10.18.130 VIOLATIONS AND REMEDIES.
.010 It sh<;tll be unlawful for any person to willfully violate the mandatory provisions of this Chapter 10.18. A violation of any mandatory provision of this Chapter 10.18 shall be a misdemeanor and shall be punishable upon conviction as authorized by Section 1.01.370 of the Municipal Code, or any successor provision thereto .
. 020 In addition to any remedies or enforcement measures provided by State law or in this Chapter 10.18, any violation of this chapter 10.18 is subject to civil fines in accordance with Chapter 1.20 of the Municipal Code, or any successor provision thereto . . 030 In addition to any other remedies provided in this Code or available under applicable law, the City can alternatively seek injunctive relief in the Superior Court or other take enforcement actions for violations of this chapter 10.18.

10.18.140 RESERVATION OF RIGHTS.

The rights of the Department hereunder shall be cumulative to any other right of the Department to discontinue service."
12 SECTION 3. WATER SUPPLY SHORT AGE.

The Anaheim City Council hereby declares the existence of a Severe Water Shortage and implementation of Water Reduction Plan III is necessary given the prolonged drought and the declared "State of emergency" under California Government Code section 8558(b). The foregoing declaration and implementation are also necessary to safeguard the public health, safety, and welfare. These findings are supported by the recitals contained herein and such information presented to the City Council at the public hearing for the adoption of this ordinance. In connection with the foregoing, the Anaheim City Council hereby orders the implementation of Water Reduction Plan III of Section 10.18.090 of the Anaheim Municipal Code and, through this ordinance, the Anaheim City Council rescinds Resolution No. 2014-151. The implementation of Water Reduction Plan III may be terminated in accordance with the applicable provisions of Chapter 10.18 of the Anaheim Municipal Code.

SECTION 4. ENVIRONMENTAL REVIEW.

The City Council finds and determines that this ordinance is not subject to CEQA pursuant to Water Code section 10652 because CEQA does not apply to the preparation and adoption of a water shortage contingency plan or to the implementation of the actions taken pursuant to such plans. Because this ordinance partially comprises Anaheim's water shortage contingency plan and involves its implementation, no CEQA review is required.

SECTION 5. SEVERABILITY.

The Anaheim City Council hereby declares that should any section, paragraph, sentence, phrase, term or word of this ordinance be declared for any reason to be invalid, it is the intent of the Anaheim City Council that it would have adopted all other portions of this ordinance independent of the elimination herefrom of any such portion as may be declared invalid. If any section, subdivision, paragraph, sentence, clause or phrase of this ordinance is for any reason held to be invalid or unconstitutional, such decision shall not affect the validity of the remaining portions of this ordinance. The Anaheim City Council hereby declares that it would have passed this ordinance, and each section, subdivision, paragraph, sentence, clause and phrase thereof, irrespective of the fact that anyone (or more) section, subdivision, paragraph, sentence, clause or phrase had been declared invalid or unconstitutional.

SECTION 6. CERTIFICATION
The City Clerk shall certify to the passage of this ordinance and, pursuant to California Water Code section 376, shall cause the same to be printed once within ten (10) days after its adoption in the Anaheim Bulletin, a newspaper of general circulation, published and circulated in the City of Anaheim.

SECTION 7. EFFECTIVE DATE
Pursuant to California Water Code section 376, this ordinance shall take effect and be in full force upon adoption.
13 THE FOREGOING ORDINANCE was introduced at a regular meeting of the City Council of the City of Anaheim held on the -.2th day of __ May ,2015, and thereafter passed and adopted at a regular meeting of said City Council held on the 19thday of May ,2015, by the following roll call vote:

AYES: Council Members Murray, Brandman and Vanderbilt
NOES: None
ABSENT: Mayor Tait and Mayor Pro Tern Kring
ABSTAIN: None
ATTEST:
.f6.- CITY CLERK F THE CITY OF ANAHEIM
108358
14 Appendix L-2
Sewer Study

CITY OF ANAHEIM

DISNEYLANDFORWARD SEWER STUDY
AUGUST 2023
Prepared by:
5 Hutton Centre Drive, Suite 300
Santa Ana, CA 92707
Project No. 3WDI000400
ii August 2023

TABLE OF CONTENTS
1 Background Information .................................................................................................1-1 2 Project Sewer Flows and Factors ...................................................................................2-1

2.1 EIR No. 311 Flow Factors ..........................................................................................2-1

2.2 DLR Flow Monitoring .................................................................................................2-2 3 Model Calibration ............................................................................................................3-1

3.1 Updated DLR Flows ...................................................................................................3-1

3.2 City Flow Monitoring ..................................................................................................3-3

3.3 Model Calibration Adjustments ..................................................................................3-4

3.4 Calibration Summary .................................................................................................3-7 4 Existing Condition Scenario ...........................................................................................4-1

4.1 Existing Condition Scenario Development .................................................................4-1

4.2 Existing Condition Summary ......................................................................................4-2 5 Project Sewer Capacity Analysis....................................................................................5-1

5.1 Proposed Project - DisneylandForward ......................................................................5-1

5.2 Capacity Evaluation Criteria .......................................................................................5-4

5.3 Scenario 1: Current Approved Disney Full Buildout ....................................................5-4

5.4 Scenario 2: DisneylandForward Full Buildout .............................................................5-7

5.5 Scenario 3: Alternate Loading Variation Analysis ..................................................... 5-10

5.6 Ball Road Pipeline Analysis ..................................................................................... 5-13 6 Alternative Improvements ...............................................................................................6-1

6.1 Katella Pipeline Improvement Analysis ......................................................................6-1

6.2 Flow Diversion Analysis .............................................................................................6-3

6.3 Project Related Improvement Alternatives .................................................................6-4 iii August 2023
TABLES
Table 1-1 – Uses Currently Allowed Under DRSP and ARSP For Disney Properties .............. 1-3 Table 1-2 – EIR 311 Sewage Generation Estimates ............................................................... 1-5 Table 2-1 – EIR 311 – Flow Breakdown & Flow Factors ......................................................... 2-1 Table 2-2 – Existing Flow Breakdown using EIR 311 Flow Factors ......................................... 2-2 Table 2-3 – April 2022 Flow Monitoring Results vs. Model Flow Loading (2020) ..................... 2-3 Table 2-4 – Existing Flow using Recommended Adjusted Flow Factors .................................. 2-4 Table 2-5 – EIR No. 311 Flow Factors vs. Proposed Flow Factors .......................................... 2-4 Table 2-6 – DLR Project Buildout Flow from EIR 311 and Adjusted Factors ........................... 2-5 Table 3-1 – Disneyland Resort Updated Model Flow............................................................... 3-2 Table 3-2 – Flow Monitoring vs. Model Flows ......................................................................... 3-4 Table 4-1 – Approved Project Model Loading ......................................................................... 4-1 Table 5-1 – DisneylandForward Proposed Project Densities ................................................... 5-1 Table 5-2 – Sewer Flow for Remaining Approved DLR Development – Scenario 1 ................. 5-5 Table 5-3 – Scenario 1 Manhole Loading ................................................................................ 5-6 Table 5-4 – Sewer Flow for Future Project Development – Scenario 2 ................................... 5-8 Table 5-5 – Scenario 2 Manhole Loading ................................................................................ 5-9 Table 5-6 – Theme Park District Loading Variation Analysis ................................................. 5-10 Table 5-7 – Cerritos Pipeline Loading Sensitivity .................................................................. 5-11 Table 5-8 – Southeast District and Theme Park East Overlay Alternate Loading .................. 5-12 Table 5-9 – Ball Road Parking Overlay Sewer Loading ......................................................... 5-10 5-13
iv August 2023

FIGURES
Figure 1-1 Current Development Districts
Figure 2-1 April 2022 Flow Monitoring vs Model Flows
Figure 3-1 November 2022 Flow Monitoring vs Model Flows Figure 3-2 Study Area Adjusted Residential/Hotel Peaking Figure 4-1 Existing Condition – No Harbor Diversion
Figure 4-2 Existing Condition – with Harbor Diversion
Figure 5-1 Proposed DRSP and ARSP Districts and Overlays Figure 5-2 Scenario 1 – Current DLSP and ARSP Full Buildout Model Loading Figure 5-3 Scenario 1A – Limiting Reach Maximum d/D – No Harbor Diversion Figure 5-4 Scenario 1B – Limiting Reach Maximum d/D – With Harbor Diversion Figure 5-5 Scenario 2 – DisneylandForward Project Loading Figure 5-6 Scenario 2A – Limiting Reach Maximum d/D – No Harbor Diversion Figure 5-7 Scenario 2B – Limiting Reach Maximum d/D – With Harbor Diversion Figure 5-8 Scenario 3A – Theme Park Loading Variation – No Harbor Diversion Figure 5-9 Scenario 3B – Theme Park Loading Variation – With Harbor Diversion Figure 5-10 Ball Road Tributary Pipeline System
Figure 6-1 Northern Katella Pipeline Improvement Alternative Figure 6-2 Southern Katella Pipeline Improvement Alternative Figure 6-3 Diversion Improvement Analysis – No Harbor Diversion Figure 6-4 Diversion Improvement Analysis – With Harbor Diversion

APPENDICES
Appendix A Sewer Flow Monitoring – Disneyland Resort
Appendix B Flow Monitoring Comparison – 8 Disney Sites
Appendix C April 2022 Flow Monitoring
Appendix D November 2022 Flow Monitoring
Appendix E Existing and Project Modeling Output
Appendix F August 9, 2023, Memo re: Parking Facility Flow Estimate 1-1 August 2023
ES Executive Summary
To allow continued, long-term growth of The Disneyland® Resort, Walt Disney Parks and Resorts U.S., Inc. (Disney) proposes the DisneylandForward Project, which would allow the transfer of uses permitted under The Disneyland Resort Project to other areas of the Disneyland Resort Specific Plan No. 92-1 (DRSP) and properties within the Anaheim Resort Specific Plan No. 92-2 (ARSP) owned or leased by Disney or other subsidiaries of The Walt Disney Company (Disney ARSP Properties, and, collectively with Disney’s properties in the DRSP, Disney Property or Disney Properties). These areas are or will be considered to be part of The Disneyland Resort Project (DLR Project) as modified by the DisneylandForward Project (Project).

This sewer study provides sewer capacity analysis for the existing condition and DLR Project buildout flows for both existing allowed land uses and proposed Project uses. The analysis includes Project development flows for various loading scenarios along with sewer flows for existing and other reasonably anticipated proposed development from the upstream tributary areas. The capacity analysis identified no existing capacity deficiencies within the City sewer pipeline reaches serving the Project. As the Project allows flexibility for the location of permitted uses, Project scenarios were developed to identify potential deficiencies using maximum allowed densities within each of the various development areas. The scenarios and related sewer flows resulted in identified pipeline deficiencies for Project buildout. These deficiencies would not all occur as they represent maximum allowed uses that are shifted between Project areas.

Alternative improvements have been identified to provide sufficient capacity for Project buildout flows. Although this analysis identifies specific potential improvements needed to accommodate Disney buildout flows, there is a wide variation in where development could potentially occur and the degree to which sewer lines may be impacted. Ultimately, alternatives to alleviate Project buildout capacity constraints may include pipeline improvements, as needed, based on the specific location and timing of Project flows and other future flows. 1 Background Information
To allow continued, long-term growth of The Disneyland® Resort, The Walt Disney Company through Walt Disney Parks and Resorts U.S., Inc. (Disney) proposes the DisneylandForward (Project), which would allow the transfer of previously approved uses to other properties owned by Disney (Disney Properties) in the Disneyland Resort Specific Plan (DRSP) and Anaheim Resort Specific Plan (Disney ARSP Properties). The Project would not increase the amount of development square footage or hotel rooms currently allowed in the DRSP and analyzed in Environmental Impact Report No. 311, which the City certified in 1993. The Project would provide for future administrative review by the City of Anaheim (City) of Disney’s development projects on Disney Property.

The Project Site is located entirely within the City in Orange County, California, within an area known as The Anaheim Resort®, a 1,078-acre portion of the City especially designated by the City's General Plan for Commercial Recreation land uses and which is intended to provide for 1-2 August 2023
tourist and entertainment-related industries, such as theme parks, hotels, tourist-oriented retail, movie theaters, and other visitor-serving facilities. The Anaheim Resort includes the following three specific plan areas: DRSP (489.7 acres), ARSP (581.3 acres) and Hotel Circle Specific Plan No. 93-1 (HCSP) (6.8 acres), and the Project Site is located within areas regulated by the DRSP and the ARSP.

The Project Site encompasses The Disneyland Resort, including the existing Theme Park, Hotel, Parking and Future Expansion Districts and the Disney ARSP Properties, which are listed below:
• 1515 S. Manchester Avenue (currently used as the Manchester Cast Member1 Lot); • 1585 S. Manchester Avenue (currently occupied by a vacant office building and also used as the Manchester Cast Member Lot);
• 1530 S. Harbor Boulevard (currently used as the Manchester Cast Member Lot); • 1900 S. Harbor Boulevard (currently used as the Toy Story Parking Lot); • 333 W. Ball Road (currently used as the Harbor Cast Member Lot); and • 1717 S. Disneyland Drive (Paradise Pier Hotel)
These Disney ARSP Properties will be considered to be part of The Disneyland Resort Project as modified by the DisneylandForward Project with approval of the Project.

To the extent the Project would update The Anaheim Resort Public Realm and Landscape Program and The Anaheim Resort Identity Program and would amend the DRSP Maximum Permitted Structural Height Map and the Anaheim Commercial Recreation Area Maximum Permitted Structural Height Map, the Project Site includes the entire Anaheim Resort (inclusive of the ARSP, DRSP, and HCSP). The Project Site also includes areas identified in the General Plan as planned extensions of Gene Autry Way between Harbor Boulevard and Haster Street and of Clementine Street between Katella Avenue and Orangewood Avenue, portions of which are outside The Anaheim Resort.

The Disneyland Resort Project
The City analyzed the environmental impacts of The Disneyland Resort Project, including the adoption of the DRSP, in Environmental Impact Report (EIR) No. 311, which the City certified in 1993 along with the adoption of Mitigation Monitoring Program No. 0067. In 1996, in conjunction with an amendment to The Disneyland Resort Project, the City Council approved an Addendum to EIR No. 311, including a Modified Mitigation Monitoring Plan No. 0067. Table 1-1, Uses Currently Allowed Under DRSP/ARSP For Disney Properties, details allowable development. The current development districts are illustrated on Figure 1-1.

To date, Disney has developed approximately 45 percent of the approved square footage for theme park uses, in part due to the open-air nature of Disney’s theme parks.

The DRSP also contains areas designated as District A, the C-R Overlay, and the Anaheim GardenWalk Overlay. The Project does not propose any modifications to these three areas. EIR 1 Cast Member is a term used by Disney for an employee of The Disneyland Resort. 1-3 August 2023
No. 311 and SEIR No. 340, including the associated Mitigation Monitoring Plans, would continue to apply to future development in District A, the Anaheim GardenWalk Overlay and the CR-Overlay.

The Anaheim Resort Specific Plan Project
The City analyzed the environmental impacts of the ARSP in Master EIR No. 313, which the City certified in 1994, along with the adoption of Mitigation Monitoring Program No. 85C. In December 2012, the City certified Supplemental EIR (SEIR) No. 340 in support of the approval of Amendment No. 14 to the ARSP Project. SEIR No. 340 reevaluated the environmental changes in and around the ARSP area since certification of Master EIR No. 313 in September 1994 and incorporated the relevant findings from Master EIR No. 313. As detailed in Table 1-1, Uses Currently Allowed Under DRSP/ARSP For Disney Properties, the ARSP, as previously amended, allows development on Disney ARSP Properties of up to 75 or 50 hotel rooms per gross acre with approval of a Final Site Plan. Section 18.116.070 of the City of Anaheim Municipal Code also allows the development of theme parks, entertainment venues, and transportation facilities on these properties with approval of a conditional use permit.

Specifically, development in District A, the Anaheim GardenWalk Overlay and the CR-Overlay would not be regulated by the mitigation measures associated with this Subsequent EIR.2 Table 1-1 – Uses Currently Allowed Under DRSP/ARSP For Disney Properties Disney DRSP Property Maximum Allowable
Development Under DRSP Existing Development1 Remaining Entitlement 1 Hotel District Uses (97 acres)
Hotel Rooms 5,600 hotel rooms 2,342 hotel rooms2 3,258 hotel rooms Hotel Retail/Restaurant 300,000 sf 159,549 sf 140,451 sf Hotel Meeting Space 200,000 sf 161,220 sf 38,780 sf
Parking Spaces 9,930 spaces 5,885 spaces 4,045 spaces
Theme Park District (292 acres)
Theme Park 6,850,000 sf 3,192,885 sf3 3,657,115 sf
Administration Building 475,000 sf 305,430 sf 169,570 sf Administration Building
Parking 2,300 spaces 1,545 spaces 755 spaces
Parking District (57.1 acres)
2 Project-related actions that may impact off-site areas, or properties not included in the Project Site, include proposed amendments to The Anaheim Resort Identity Program and The Anaheim Resort Public Realm Landscape Program, the abandonment of Disneyland Drive, and properties adjacent to the proposed pedestrian bridges north of Disney Way and south of Manchester Avenue. 1-4 August 2023
East Parking Area 17,600 spaces 2,179 spaces4 15,421 spaces West Parking Area 16,700 spaces 16,298 spaces 402 spaces Future Expansion District (24.7 acres)
Parking Area 5,100 spaces 2,529 spaces 2,571 spaces
Disney ARSP Properties Maximum Allowable
Development Under ARSP Existing Development1 Remaining Entitlement1 C-R District Uses (75.4 acres)
1515 S. Manchester Ave
1,116 hotel rooms (75
rooms per gross acre or 75
rooms per lot or parcel,
whichever is greater)
Cast Member parking (1,261
spaces – temporary parking
lot initially approved on May
8, 2019, and an
approximately 67,424-
square foot office building
1,116 hotel rooms
1585 S. Manchester Ave
1530 S. Harbor Blvd (14.88
acres)
1900 S. Harbor Blvd (44.66
acres)
3,348 hotel rooms (75
rooms per gross acre or 75
rooms per lot or parcel,
whichever is greater)5
Toy Story Parking Lot
(4,635 spaces-temporary
parking lot approved
through June 26, 2024)
3,348 hotel rooms
333 W. Ball Road (10.69
acres)
534 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever
is greater)
Cast Member parking (1,324
spaces) 534 hotel rooms
1717 S. Disneyland Drive
(5.15 acres)
564 hotel rooms (50 rooms
per gross acre or 75 rooms
per lot or parcel, whichever
is greater)6
Paradise Pier Hotel (489
rooms and approximately
17,619 square feet in
ancillary commercial uses)
45 hotel rooms
1 These numbers are as of the date of the Notice of Preparation, October 21, 2021; over the course of this environmental review process, these numbers may change due to ongoing development efforts based on current entitlements. 2 Hotel rooms include existing Vacation Ownership Resort (VOR) units at the Grand Californian Hotel and VOR units at the Disneyland Hotel under construction as of NOP.
3 This amount includes the existing 246,702 sf of retail, dining and entertainment in Downtown Disney as of the NOP. The DRSP allows up to 350,000 sf of retail, dining and entertainment sf in either the Theme Park or Hotel District. 4 This amount includes the existing 842 spaces in the Ball Cast Member Lot. The DRSP allows up to 5,000 parking spaces identified for the East Parking Area to be located in the Theme Park District. 5 Acreage for density excludes ultimate public right-of-way for Clementine Street and Gene Autry Way. 6 The Paradise Pier Hotel property is comprised of two parcels: a 4.48-acre parcel that includes 489 hotel rooms and a 0.67-acre property that is allowed 75 hotel rooms.

Source: City of Anaheim 2021.

EIR No. 311 estimated existing and proposed sewer flows as shown in Table 1-2. Details and assumptions for these estimates can be found on Table 4A and 4B of The Disneyland Resort Utility Report, Psomas and Associates, November 5, 1992. The report included credits in the sewage flow estimates in those tables, but the credits were primarily related to structures to be demolished outside the theme park and are not included here.
1-5 August 2023
Table 1-2 – EIR 311 Sewage Generation Estimates
Component
Average Sewer Generation
(mgd)
Existing Disneyland Park 0.46
Existing Disneyland Hotel 0.39
Westcot Theme Park1 1.09
New Hotel Rooms and Restaurants 0.93
Disneyland Expansion 0.17
Total2 3.04
Source: The Disneyland Resort Utility Report, Table 4A (Psomas and Associates, Nov. 5, 1992) and EIR 311, Table 3-10-22. (1) “Westcot Theme Park,” from EIR 311, includes area that became Disney’s California Adventure (DCA).
(2) Total includes existing and projected flow but excludes 0.42 mgd credit for facilities to be abandoned.

Based on the sewer analysis completed for EIR No. 311, the City adopted mitigation measures to mitigate DLR Project impacts to the sewer system. The intent of these mitigation measures was to accommodate the sewage impact of the entire approved DLR Project, including all uses in the statistical quantities shown on Table 1-1, above. City Staff and Psomas have reviewed the mitigation measures identified in EIR No. 311, Mitigation Monitoring Program No. 0067, and Development Agreement 96-01 and determined that all required physical improvements to the City sewer system, as it existed at the time, were completed with the exception of improvements required in the Orangewood Sewer as a result of additional anticipated flows headed south on Harbor Blvd. The City has since taken over Orange County Sanitation District (OC San) facilities that were not analyzed in EIR 311.
2-1 August 2023
2 Project Sewer Flows and Factors
Psomas, in conjunction with CAB Engineers, conducted background research and flow monitoring to establish appropriate DLR Project flow generation factors. To set the baseline for DLR Project flow projections, we focused on generating the appropriate flow factors to calibrate flows from the existing uses.

2.1 EIR No. 311 Flow Factors
The flow estimates for total entitled buildout sewer flow in EIR No. 311 used 150 gallons per day per room (gpd/room) for hotels and 2,000 gallons per day per thousand square feet (gpd/ksf) for restaurants, based on 25 square feet (sf) per seat and 50 gpd/seat. EIR No. 311 did not, however, provide a flow factor for theme park uses. Using these estimated flow factors and the statistics for existing uses as shown on the top two rows of Table 2-1, below, leads to a total flow of 1.44 million gallons per day (mgd) from restaurant and hotel uses. Based on the buildout flow estimate from Table 1-2 of 3.04 mgd, this leaves 1.60 mgd for the entitled theme park uses (3.04 – 1.44). Dividing that flow by the 6.85 million sf of entitled theme park uses provides a flow factor of 234 gpd/ksf.

The flow breakdown and corresponding flow factors based on EIR No. 311 are summarized in Table 2-1, below, using these factors.

Table 2-1 – EIR 311 – Flow Breakdown & Flow Factors
Entitled Use
Entitled
Amount Units
Flow
Factor
(gpd/unit)
Flow
(mgd)
Restaurant/Retail1 300 ksf 2,000 0.60
Hotel Rooms 5,600 rooms 150 0.84
Theme Park District2 6,850 ksf 234 1.60
Total3

3.04 1) Based on 25 sf/seat and 50 gpd/seat from Table 3B in Appendix B of The Disneyland Resort Utility Study, Psomas and Associates, November 5, 1992. 2) Calculated theme park flow by subtracting hotel and restaurant/retail from total.
3) Existing flow of 0.85 mgd plus new facilities flow of 2.19 mgd from EIR 311 and Table 1-2 above.

2-2 August 2023
Using the flow factors from Table 2-1, based on EIR No. 311, and the statistics for existing uses in the DLR, shown in Table 1-1, leads to the flows shown in Table 2-2, below, for existing uses.

Table 2-2 – Existing Flow Breakdown using EIR 311 Flow Factors Existing Use Amount Units
Flow
Factor
(gpd/unit)
Flow
(mgd)
Restaurant/Retail 160 ksf 2,000 0.32
Hotel Rooms 2,342 rooms 150 0.35
Theme Park 3,193 ksf 234 0.75
Total 1.42
The flow factor of 150 gpd per hotel room from EIR No. 311 matches what is used in the City’s sewer model for hotel uses. Though this factor is applied on a per room basis, it includes all hotel auxiliary uses. Restaurant and retail sewer loading in the model are applied on a per-acre basis unless more detailed information is available on square-footage. In such cases, restaurant flows are estimated in City of Anaheim sewer studies using a flow factor of 800 gpd/ksf and retail flows are estimated using a flow factor of 195 gpd/ksf. Since the date of EIR No. 311, numerous improvements in commercial dishwashers and other plumbing fixtures geared toward water conservation have been made making the 2,000 gpd/ksf factor unrealistically high.

2.2 DLR Flow Monitoring
DLR Project existing and projected flows were loaded into the City’s sewer model during preparation of the City’s 2017 Central Anaheim Master Plan of Sanitary Sewers (CAMPSS or master plan). Initially, the flows for the DLR Project were based on EIR No. 311 and the DRSP.

These flows were updated in 2016, before the master plan was completed, based on DLR 2006 flow monitoring data reported in a study prepared by Innovative Consultants Inc., dated February 2007 (Appendix A). This data was provided to the City in 2016 during the final preparation of the master plan. The resulting flows based on the 2006 flow monitoring data were significantly higher than those originally projected based on EIR No. 311 and the DRSP. The updated flows were loaded into the model based on observed flows at the monitoring sites rather than a specified loading factor. Appendix B summarizes the 2006 flow monitoring data and the resulting flows utilized in the master plan model. The master plan analysis and CIP recommendations were ultimately based on these higher flows.

To confirm total existing flows and flow factors as well as model loading for the DLR Project, Psomas subcontracted with US3 to conduct flow monitoring during April 2022 at eight locations where DLR flows contribute to the City’s sewer collection system. The results of this flow monitoring are summarized and compared to the original City model loading data for the DLR Project on Figure 2-1 and in Table 2-3, by location.
2-3 August 2023
Table 2-3 – April 2022 Flow Monitoring Results vs. Model Flow Loading (2020) FM
Site Location
Initial Model Flow (mgd) Flow Monitoring (mgd)
Avg Peak Contributing Uses
Peak
Factor Avg Peak
Peak to
Average
1 Magic Way 1.588 2.542 1.60 0.529 0.992 1.89 Disneyland (Except Site #8), Downtown Disney, and Back-of-House
2 Walnut 12-inch 0.271 0.567 2.10 0.084 0.177 2.12 Conference Center, Disneyland Hotel Fantasy Tower
3 Walnut 10-inch 0.240 0.384 1.60 0.010 0.026 2.49 Steakhouse, Goofy's Kitchen, Pools 4 Disneyland Drive 0.579 1.099 1.90 0.381 1.029 2.70 Grand Californian Hotel, Paradise Pier Hotel, and DCA (Central & SW)
5 Old Cerritos 0.042 0.066 1.59 0.009 0.039 4.28 Downtown Disney (former ESPN Zone, Rain Forest, AMC)
6 Walnut 15-inch 0.628 1.005 1.60 0.142 0.426 3.00 Disneyland Hotel, Frontier & Adventure Towers, Trader Sam’s, Central Plant
7 DCA to Katella 0.694 1.110 1.60 0.164 0.779 4.75 DCA (East & SE) from private lift station 8 DL to Harbor 0.442 0.707 1.60 0.155 0.600 3.87
East Disneyland (Matterhorn, Lagoon,
Buzz, TL Terrace, Autopia,
Innoventions) from private lift station
Totals 4.48 7.48 1.47 4.07
Peak Factor for Model is composite from Park and Hotel uses from Summer 2006 flow monitoring. Peak Factor from Flow Monitoring is Maximum Peak Flow divided by Average for entire flow monitoring period (very conservative). Peak to average for each day is lower.

Model average and peak flow were based on Summer 2006 monitoring, adjusted for Star Wars. Peak flows are totaled for comparison purposes only. Peak flow from each site do not occur at the same time of day and therefore cannot be summed to determine combined peak flow from DLR.

Monitored flows through FM Sites 7 and 8 discharge via private lift stations located on Disney property, upstream of these sites.

This results in peak flows that are very short and high which dissipate in the larger City pipelines.

Detailed daily data from the 2022 flow monitoring, which was conducted over a minimum 14-day period at each site, is included in Appendix C. Note that the peak to average flow ratio for monitored flows presented in Table 2-3 represent the single peak read divided by the average for the entire monitoring period. Actual observed daily peaks are lower and presented in Appendix C.

This flow monitoring coincided with spring break for many schools, which is one of the busiest times for DLR. Psomas staff have reviewed attendance figures for the 2022 flow monitoring period and confirmed that park attendance and hotel occupancy were within 5% of the same period of time in 2019 (pre-pandemic). As seen in Table 2-3, the initial model loading for DLR uses based on the 2006 flow monitoring data is significantly higher than the updated 2022 flow monitoring data. Based on the updated flow monitoring data and the comparison with existing model loading in Table 2-3, Psomas has determined that the previous model loading for existing DLR uses, based on the 2006 flow monitoring data, is no longer appropriate or accurate.

The total existing average day flow from Table 2-3 (2022 Flow Monitoring) of 1.47 mgd, is within 4 percent of the flows estimated in Table 2-2 using the flow factors from EIR No. 311 (1.42 mgd).

However, Psomas recommends the following adjustments:
2-4 August 2023
• Adjust the restaurant and retail flow to 800 gpd/ksf for consistency with City of Anaheim sewer studies and more current industry standards for restaurant use. • Adjust the theme park flow factor to 400 gpd/ksf for future planning as shown in Table 2- 4 below. This flow factor is based on the most recent flow monitoring data and was calculated by totaling the theme park flows and dividing by existing theme park use square footage with a resulting theme park factor of 325 gpd/ksf, and then adding an approximately 20% buffer to provide a factor of safety.

Using these adjusted flow factors on the existing use statistics generates a total existing flow of

1.76 mgd. This flow is 19.4 percent higher than the average flow monitored in April 2022, allowing for potentially higher attendance and/or hotel occupancy in the future. However, the adjusted flows are significantly lower than the flows utilized in the City’s current model, which are based on 2006 flow monitoring data.

Table 2-4 – Existing Flow using Recommended Adjusted Flow Factors Existing Use Amount Units
Adj. Flow
Factor
(gpd/unit)
Adj. Flow
(mgd)
Restaurant/Retail 160 ksf 800 0.13
Hotel Rooms 2,342 rooms 150 0.35
Theme Park 3,193 ksf 400 1.28
Total 1.76
2022 Flow Monitoring Total 1.47
Adjusted Flow higher than 2022 FM by 19.4%
The adjusted factors are derived from typical flow factors for hotel and restaurant uses and monitored theme park flow data, increased for a factor of safety. As such, Psomas recommends these adjusted factors be used in projecting additional flow for remaining DLR Project entitled uses. The recommended adjusted factors and EIR No. 311 factors are summarized in Table 2-5, below for comparison.

Table 2-5 – EIR No. 311 Flow Factors vs. Proposed Flow Factors Existing Use Units
EIR 311 Factor
(gpd/unit)
Adjusted Factor
(gpd/unit)
Restaurant/Retail ksf 2,000 800
Hotel Rooms rooms 150 150
Theme Park ksf 234 400
Table 2-6 shows a comparison of the total flows from EIR No. 311 and the adjusted flows using the recommended flow factors. As shown, the adjusted flows are 25 percent higher than those documented in EIR No. 311.
2-5 August 2023
Table 2-6 – DLR Project Buildout Flow from EIR 311 and Adjusted Factors DRSP Use
Maximum
Allowable Units
EIR 311
Flow
Factor
(gpd/unit)
EIR 311
Flow
(mgd)
Adj. Flow
Factor
(gpd/unit)
Adj. Flow
(mgd)
Restaurant/Retail 300 ksf 2,000 0.60 800 0.24
Hotel Rooms 5,600 rooms 150 0.84 150 0.84
Theme Park 6,850 ksf 234 1.60 400 2.74
Total 3.04 3.82
Adjusted Flow Higher than EIR 311 25.5%
3-1 August 2023
3 Model Calibration
The City utilized flow monitoring to calibrate flow generation rates for the three sanitary sewer model areas in the City, including the Central Anaheim model used in this study. Because the City has calibrated models, flow monitoring is not typically conducted to reassess current conditions relative to a specific development. However, it was determined that utilizing flow monitoring to calibrate flows in this effort was justified and appropriate for the following reasons:
• The recent update to the Central Anaheim Master Plan (as well as prior master plans) did not include (for a number of reasons, but primarily due to the difficulty of establishing traffic control on Harbor Boulevard and Katella Avenue) flow monitoring on Katella Avenue even though it was one of the largest basins in terms of area, land use diversity, and flow. This basin also is one of the most complex systems due to the parallel lines in both Harbor Boulevard and Katella Avenue and system connectivity. Therefore, performing this monitoring helps fill that data gap. It provides a check on the actual flow level (d/D) in the sewer, which is a missing piece of information for the City, apart from a video from 2005 in the South Katella Sewer;
• While this effort may be called a “Study” it is really a regional effort and as such calibration based on monitoring is consistent with the approach of master planning; • DLR theme park uses are also unique to the City in terms of flow factors and diurnal curves, making flow monitoring useful in terms of determining DLR flow and how it interacts with flow from the large sewers into which it discharges;
• The areas being monitored, in particular the Disney properties, are understood relative to their occupancy. In other words, there are few unknowns relative to the potential for a large area that may be underutilized which could skew the flow monitoring results; and • Further to the prior bullet, the flows from DLR can be reliably calibrated to determine actual peak flows, since the occupancy on the days monitored is known relative to the maximum capacity. The sewer generation at Disney Properties (as with many other uses) is directly correlated to population/attendance. Therefore, it is easy to adjust the generation to accommodate for these fluctuations and significantly reduces the unknown associated with potential short-term variability.

3.1 Updated DLR Flows
Psomas updated the model based on observed DLR flows and peaking from the April 2022 flow monitoring data. The DLR flows previously included in the model were based on 2006 flow monitoring data as reported in the study prepared by Innovative Consultants Inc., dated February 2007. Model peaking was also developed using the 2022 flow monitoring data and is included in Appendix C for each site. DLR flow monitoring occurred during a high flow period (Spring Break) as verified by Disney by way of park attendance and hotel occupancy during the month of April.

The peaking curves and flow rates incorporated into the model are specific to each monitoring site for use in calibrating the model to existing flows. The peaking curves are based on observed flow 3-2 August 2023
patterns as presented in Appendix C. A separate, single curve for theme park use is developed for future planning along with the residential and non-residential curves generated in the City’s master plan.

DLR existing flows utilized in model calibration are shown in Table 3-1. Sites 7 and 8 are discharged into the City’s sewer system through a lift station, causing sharp and short peaks which dissipate in the City’s pipelines. These flows were adjusted in the model based on the average of hourly peaks. The flows from Sites 2, 3, 5, and 6 discharge to Walnut Street from various Disneyland Hotel buildings/towers. As such, these flows were combined into a single hotel flow and peaking curve loaded at the upstream discharge manhole.

Table 3-1 – Disneyland Resort Updated Model Flow
FM Site(s) Location
DLR Updated Model Flow
(mgd)
Avg Peak
Peak
Factor
1 Magic Way(1) 0.63 1.46 2.3
2, 3, 5, & 6 Walnut / Disneyland Hotel 0.29 0.69 2.4
4 Disneyland Drive 0.43 1.04 2.4
7 DCA to Katella(2) 0.34 0.79 2.3
8 DL to Harbor(2) 0.21 0.48 2.3
Total(3) 1.90
(1) Magic Way monitoring represents the only site with all theme park flow that discharges without a lift station.
(2) Sites 7 and 8 discharge to the City system from DLR on-site sewer lift stations. The sharp and short peaks observed during flow monitoring dissipate in City pipelines. Flows were calibrated by averaging hourly peaks. (3) Peak flows occur at different times of day for each site and thus cannot be totaled.

The combined existing average flows for DLR utilized in the model are conservatively higher than both observed flows and calculated flows presented in Table 2-4 using the proposed flow factors.

Higher flows were utilized to provide a factor of safety to the model calibration and are also used for DLR existing flows in the Existing Condition and Project Analysis.

Appendix B provides a summary of DLR flows from 2006 flow monitoring and the City’s master plan model compared to 2022 flow monitoring and the updated model flows. Appendix B also includes hydrographs comparing DLR 2022 observed flows with updated model flows over the extended period simulation. These hydrographs illustrate model flows that provide a factor of safety and are conservatively higher than observed flows. 3-3 August 2023

3.2 City Flow Monitoring
DLR existing flows are collected into the City pipelines along Harbor Boulevard, Walnut Street, and Katella Avenue, ultimately discharging along the northern Katella pipeline to OC San facilities at Euclid Avenue. To calibrate the model to existing flows within these City pipelines, Psomas subcontracted with ADS to conduct flow monitoring at seven locations along and tributary to Katella Avenue, shown on Figure 3-1, during the period of Friday, 04 November 2022 to Sunday, 20 November 2022. ADS prepared a Sewer Flow Monitoring Report, dated December 2, 2022, included in Appendix D. ADS also provided data in excel containing depth, velocity, and flow rate at 5-minute intervals. DLR theme park attendance was compared for April 2022, when DLR flows were metered, and November 2022, when City flows were metered. Both months had similar attendance (within 3 percent) and represent peak periods for DLR.

The November 2022 metered flow data was used to calibrate the City’s hydraulic model for existing conditions. The existing scenario in the hydraulic model includes near-term development that has been approved but not yet constructed or occupied. The following near-term projects were removed from the model to represent current conditions during the November flow monitoring:
• Avanti Townhomes;
• Disney Vacation Club;
• Legacy Anaheim;
• 110 W. Midway (at Anaheim Blvd.);
• 1200 S. Anaheim Blvd. (at Ball Road); and
• Garden Walk Hotel Use.

The resulting model flow (“Initial Model” in Table 3-2) was compared to flow monitoring data (“Flow Monitoring” in Table 3-2) with results summarized in Figure 3-1 and Table 3-2. The City’s sewer model and capacity evaluation criteria are based on dry weather flow analysis. A measurable rain event occurred on November 8th that coincided with flow measurements that were higher than any other day of the monitoring period, indicating storm water inflow. As such, that day was excluded from the average and peak flow data presented in Table 3-2 in order to calibrate to dry weather flow conditions.
3-4 August 2023
Table 3-2 – Flow Monitoring vs. Model Flows
FM
SITE
FLOW MONITORING(1) INITIAL MODEL(2) CALIBRATION(3) EXISTING(4) AVG
(MGD)
PEAK
(MGD)
PEAK
TO
AVG
AVG
(MGD)
PEAK
(MGD)
PEAK
TO
AVG
AVG
(MGD)
PEAK
(MGD)
PEAK
TO
AVG
AVG
(MGD)
PEAK
(MGD)
PEAK
TO
AVG
1 0.21 0.41 2.0 0.25 0.51 2.0 0.24 0.47 2.0 0.38 0.85 2.2 Percent Difference(5) 23% 23% 15% 14% 85% 105%
2 0.65 1.24 1.9 1.17 2.44 2.1 0.79 1.50 1.9 1.08 2.12 2.0 Percent Difference 80% 97% 22% 21% 66% 71%
3N

1.10 1.72 1.6 1.28 2.35 1.8 1.21 2.09 1.7 1.44 2.61 1.8 Percent Difference 16% 37% 10% 22% 31% 52%
3S

1.15 2.22 1.9 1.64 3.50 2.1 1.36 2.60 1.9 1.60 3.15 2.0 Percent Difference 43% 58% 18% 17% 39% 42%
4N

2.50 3.54 1.4 2.51 3.95 1.6 2.99 4.24 1.4 3.26 4.85 1.5 Percent Difference 0% 12% 20% 20% 30% 37%
4S

1.11 1.89 1.7 0.89 1.70 1.9 1.19 2.27 1.9 1.42 2.73 1.9 Percent Difference -19% -10% 8% 20% 28% 45%
5 1.19 1.98 1.7 0.86 1.35 1.6 1.38 2.33 1.7 1.47 2.36 1.6 Percent Difference -27% -32% 17% 18% 24% 20%
(1) Based on November 2022 flow monitoring data excluding wet weather flow. (2) Model set up to represent November 2022 conditions. Includes April 2022 DLR flow monitoring update. Excludes approved near-term projects that do not currently generate flow. (3) Adjustments made to the INITIAL MODEL to more closely represent November 2022 flow monitoring data. (4) Existing scenario includes approved development that is not yet occupied/constructed (excluding DLR future uses) and assumed increase in hotel occupancy.
(5) Percent shown in red represent the percentage above (positive) or below (negative) observed flows.

3.3 Model Calibration Adjustments
The percent difference between the initial model flow and monitored flow is included in Table 3- 2 for each site (shown in red). In comparing modeled flows with metered data there was a significant difference between flow to Site 2 on Katella Avenue, upstream of Harbor Boulevard, with modeled average flow approximately 80 percent higher than observed. It was also determined that modeled flow diversions at Ball Road and Walnut Street (tributary to Sites 4N and 5) and Katella Avenue and Ninth Street (tributary to Site 4S) would need to be adjusted to calibrate to metered data. Also, flow peaking in the model was higher than observed peaking for all sites.

Adjustments were made to the model to better simulate observed data while also maintaining conservatively higher flows within the model to account for the potential seasonal variability in flows and peaking. The resulting model calibration flows are included in Table 3-2 (“Calibrated Model”). The percent difference between the observed flow and the modeled flow both before and after calibration are shown in Table 3-2 in red.
3-5 August 2023
The following adjustments were made to the model “calibration scenario” to calibrate to observed November 2022 average flow data, by site:

Site 1
Corrections were made to the model to be consistent with flow factors documented in the master plan. For example, some apartment uses were loaded at a rate of 220 gpd/dwelling unit (du) while the master plan calibrated factor is 210 gpd/du.

Corrections were made to the number of dwelling units tributary to Site 1. There were two large fourplex parcels along the north side of W. Guinida Lane that didn’t have enough dwelling units loaded in the model. These units were added to the model using the master plan flow factor.

These Site 1 changes were model corrections based on master plan criteria.

Site 2
Corrections were made for industrial uses within the model. There are two large industrial parcels along S. Allec Street, between Ball Road and Cerritos Avenue, where all of the flows were directed toward the southern Katella pipeline; however, a portion of the flow is tributary to Ball Road.

Flows were split between Katella Avenue and Ball Road basins in the calibration model. Also, industrial land use loads were revised as needed to use the master plan factor of 830 gpd/acre as there were some parcels loaded at 900 gpd/acre.

Corrections were made for loading factors for some mobile home and apartment uses to match documented master plan factors.

Anaheim GardenWalk flow was adjusted to represent existing conditions. The flow in the existing scenario had included buildout uses at Anaheim GardenWalk that are not currently in place. For calibration runs, the model was loaded using mater plan factors for the existing 466 hotel rooms, at 150 gpd/room, and retail/restaurant use at 1,700 gpd/acre. The model had included 800 hotel rooms and commercial flows based on buildout square footage.

Approximately half of the modeled flow tributary to Site 2 is generated from hotel uses. Model flows for hotel uses were reduced by 25 percent for the area tributary to Site 2 to better calibrate to observed flows. This reduction still results in modeled flows that are 22% higher than observed flows. For the purpose of this analysis, it is assumed that the lower observed flows may be due to reduced hotel occupancy. With occupancy data unavailable from the City, this is the most conservative approach, rather than concluding that the model flow factors are too high. With this assumption, the hotel flows are increased again for future system analysis to represent full occupancy.

Sites 3N and 3S
No additional changes were made to the area’s tributary to Sites 3N and 3S other than those made for Sites 1 and 2 located upstream.

Site 4S
Modeled flows to Site 4S were 19% lower than observed. Adjustments made to calibrate to Site 2, upstream of Site 4S, further lowered the modeled flows. The diversion from the southern Katella pipeline to West Street was adjusted to calibrate flows to Site 4S. The modeled flow split at Katella Avenue and West Street was originally 50/50. To increase the flow along the southern Katella 3-6 August 2023
pipeline, the flow split was adjusted to send 32% of the flow down West Street with the remaining 68% continuing down Katella Avenue.

Site 5
Average modeled flows to Site 5 along Walnut Street were 27% lower than observed metered flows. The model had assumed that no flow was diverted down Walnut Street from Ball Road, based on recommendations from the master plan. The City observed that the recommendation had not been implemented and some flow from Ball Road is diverted to Walnut Street. The flow diversion in the model was adjusted to send a constant 300 gpm from Ball Road to Walnut Street to calibrate to metered flow data.

Site 4N
No additional changes were made to the area’s tributary to Site 4N along the northern Katella pipeline other than those made for Sites 1 and 5 located upstream.

System Peaking
In addition to the adjustments made to calibrate to average sewer flows, model peaking was adjusted to reflect metered flow data more closely. A residential peaking curve is utilized in the model for all residential and hotel uses with a maximum peaking factor of 2.5 times the average flow occurring two times per 24-hour period in the morning and at night. The residential peaking curve within the study area tributary basins was adjusted to peak at 2.1 times average flow. This value more closely represents peaking for the metered flow data and is more appropriate for larger sewer basins in general. This adjusted peaking factor provides a factor of safety that generates peak flows approximately 20% higher than observed. An adjusted curve had previously been utilized in the model for residential uses in the north-eastern area, along Jackson Avenue, based on flow monitoring data collected since the master plan. Model peaking outside of the study area was left unchanged and no adjustments were made to non-residential peaking. Figure 3-2 shows a comparison of the master plan residential peaking and the adjusted peaking utilized for existing uses within the study area.

Flow Split Assumptions
In addition to the flow split assumptions implemented during model calibration at Katella and West Street (Site 4S) and Ball Road and Walnut Street (Site 5), there are additional flow splits within the modeled study area that impact sewer flows within Project tributary pipelines. These flow split assumptions were included based on the original model as follows:
• Automatic flow split at Manchester and Harbor Boulevard - The flow from Manchester is automatically split between the two parallel pipelines along Harbor. The result is an approximately equal flow split between the two pipelines. • Siphon connecting the eastern Harbor pipeline to the western Harbor pipeline at Disney Way - The flow split is set to send 100% of the flow down the eastern Katella pipeline (no flow between the two pipelines). It is assumed that the siphon will restrict flow between the two pipelines.

Two sets of short 8-inch “connector” pipelines along Katella Avenue, connecting the northern and southern parallel pipelines - One set is located just downstream of Harbor Boulevard and 3-7 August 2023
the other set is located just downstream of West Street. The flow splits at the connectors were unchanged from the master plan model. All of the connectors are closed with the exception of one near West Street which is set to automatic flow split and simulates a small amount of flow from the southern pipeline to the northern pipeline. Simplified assumptions on flow splits are necessary for modeling the system, however, actual flows between interconnections are complicated and will vary based on both flow conditions and the physical channels.

Figure 3-2 – Study Area Adjusted Residential/Hotel Peaking

3.4 Calibration Summary
The adjustments made to the model for calibration are consistent with the 2022 flow monitoring data and master plan criteria. A portion of the adjustments, as described above, were corrections made to the model loading for number of units and loading factors that adhere to the documented master plan criteria. Two flow diversions were adjusted, at Ball Road and Walnut Street and at Katella Avenue and West Street, to calibrate to observed flows. Hotel flow was reduced by 25% in the tributary area above Site 2 to represent a reduction in hotel occupancy. This reduction is removed for the existing condition scenario as described below. Finally, the residential peaking curve was adjusted to reflect observed peaking which is also typical for larger basins such as those within the study area. Model peaking has previously been adjusted based on flow monitoring data to better represent existing conditions.

0.00 0.50

1.00 1.50

2.00 2.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Peak Factor
Hour
Residential Peaking
Master Plan Adjusted
4-1 August 2023
4 Existing Condition Scenario

4.1 Existing Condition Scenario Development
Calibration to existing flow conditions (Section 3) was used as the starting point for development of the existing condition scenario. The existing condition model is used to evaluate and compare the potential impacts of DLR’s current remaining entitlements and the DisneylandForward Project on the City’s existing sewer collection system.

The following approved projects that were removed from the model for the calibration scenario are incorporated back in for the existing condition scenario:
• Avanti Townhomes;
• Disney Vacation Club;
• Legacy Anaheim;
• 110 W. Midway (at Anaheim Blvd.);
• 1200 S. Anaheim Blvd. (at Ball Road); and
• 1730 S. Clementine St.

The following two projects that are approved but are not currently in development or anticipated in the near future are also included:
• Anaheim GardenWalk Buildout; and
• 1700 S Harbor Hotel at Disney Way (increase from 300 to 580 rooms).

Table 4-1 shows the sewer loading for these approved projects along with the loading manhole number. These flows represent total project flow rather than flow increase. Flows for existing land use to be replaced are removed from the model when loading new project flows. These loads were added to the existing condition model and peaked using the original master plan peaking curves.

Table 4-1 – Approved Project Model Loading
Approved Project Units Use
Avg. Load
(gpm)(1) Manhole
Avanti Townhomes 292 Townhomes 48.67 SW087203
Disney Vacation Club 350 Timeshare 50.90 OT066203
Legacy Anaheim 156 Townhomes 26.00 SW086412
110 W. Midway Apts 86 + 5 ksf Apartments 15.19 SW086411, SW096307 1200 S. Anaheim (at Ball
Road) 223 + 4.59 ksf
Townhomes &
Retail 37.79 SW086230, SW086206
1730 S. Clementine 125 + 3 ksf Hotel 11.89 SW087403
1700 S. Harbor Hotel 580 + 75.6 ksf Hotel 80.28 SW087304 GardenWalk Hotel 400 Hotel 41.67 SW087401
GardenWalk Timeshare 400 Timeshare 41.56 SW087314
(1) Flows based on detailed sewer studies rather than general master plan loading factors. Represents total project flow, not flow increase. Replaced land use flow is removed from the model. 4-2 August 2023
For model calibration, hotel flows tributary to Site 2 were reduced to 75 percent of the original flow, assumed to represent a decrease in hotel occupancy during the monitoring period. For the existing condition scenario, these flows are increased to represent an occupancy of 100 percent.

As a result, there is no change in the hotel loading factor (150 gpd/room) for the existing condition scenario when compared to the master plan model.

The final adjustment made for the existing condition scenario is the flow diversion at Harbor Boulevard and Katella Avenue. The Midway Affordable Housing project, which is tributary to Harbor Boulevard and the northerly Katella sewer systems, was conditioned to design and construct a diversion manhole and pipeline connection that will divert 100% of the flow in the easterly Harbor sewer to the south Katella line. This diversion was not in place during the November 2022 flow monitoring but has now been constructed. Under the direction of City staff, model simulations have been run both with and without this diversion in place.

In summary, the following adjustments were made to the calibration scenario to develop the existing condition scenario to be used as the baseline for the DisneylandForward Project analysis:
• Loaded near-term projects based on sewer studies and master plan criteria; • Increased hotel loading to original values (100 percent occupancy); and • Conducted simulations both with and without the diversion at Harbor Boulevard and Katella Avenue.

The resulting d/D along the most restrictive reaches that serve current DLR uses are illustrated on Figure 4-1 without the flow diversion at Harbor Boulevard and Katella Avenue and on Figure 4-2 with this flow diversion in place. The modeled results represent peak flow conditions. Based on both flow monitoring data and existing condition simulations, there is sufficient capacity within these pipelines to serve existing and approved development projects, excluding remaining DLR entitled uses which will be evaluated below in the Project Analysis section. Model output for the Katella tributary basins, both upstream and downstream of DLR properties, is included in Appendix E.

4.2 Existing Condition Summary
The City’s master plan identified existing deficiencies along two sections of the northern Katella pipeline. The first was four reaches of 21-inch pipeline (from SW076312 to SW066430) just upstream of Disneyland Drive. The second was two reaches of 27-inch pipeline (from OT066331 to OT0057445) between Walnut Street and 9th Street. These reaches were modeled with depth to diameter ratios (d/D) above the replacement criteria of 0.75, though the reaches were not modeled as surcharged. Although flow monitoring was conducted during the development of the master plan, no monitoring was done within the study area basins tributary to the Katella pipelines that discharge to Euclid Avenue.

The City’s master plan model is a working tool that is continually updated to reflect changes and improved data. Between the time of the master plan and the current model, various adjustments have been made based on system improvements, new development, sewer studies, as-built drawings, flow monitoring, flow diversions, and updated land use data. Model refinement was also included as part of the 2020 South Central Anaheim Sewer Study. Using this working City master 4-3 August 2023
plan model as the starting point, additional adjustments have been made as part of this analysis based on 2022 flow monitoring data as described in previous sections of this report. The results of these adjustments, both to DLR flows (as seen in Appendix B) as well as the overall model refinement (Section 3.3 and 3.4), generally reduce model flows relative to earlier models. The reason for this and the basis for this conclusion is described below:
• Reduced Existing Flows From DLR: The flow monitoring of DLR flows in April 2022 (Appendix C) indicates that actual flows from DLR have dropped significantly relative to earlier flow monitoring (2006) (Section 2.2 and Appendix B). Use of low flow fixtures and other water saving measures are thought to be the predominant reasons for this change as discussed in Section 2.2. Trunk sewer monitoring on City sewers in November 2022 (Appendix D) further supports the reduced flows from DLR. DLR attendance was confirmed to be at or near capacity for both 2022 flow monitoring periods; and • Reduced Background Flow from Larger Model Area: Peak flows from existing residential and hotel uses in the model were reduced based on trunk sewer flow monitoring, and selected flow factors were reduced for consistency with stated master plan factors (Section 3.3). The flow monitoring indicates that the City sewer flows are currently lower than what the model predicted in the past. Flow monitoring had not been performed previously in the Katella sewers (traffic impact concerns) so the accuracy of the model and confidence in the predicted model flows has improved.

While there is sound basis to make adjustments to the model, it is not prudent to simply mirror flow monitoring. Any number of factors can affect flow monitoring, and variation over time can also result in higher or lower flows. Therefore, models typically use factors of safety or similar approaches. To be conservative, the following approaches were taken in development of the Existing Scenario model:
• Existing DLR average and peak flows were modeled to be higher than observed flows during the April 2022 flow monitoring (as seen in Appendix B); • Master plan flow factors for other uses were not reduced to match trunk sewer flow monitoring. It was instead assumed that lower observed flows were due in part to assumed hotel vacancies for hotels farther from DLR during the November 2022 flow monitoring period (Section 3.3). For the Existing Scenario, these hotels were assumed to be at full occupancy (Section 4.1); and
• The lower peaking curves were applied only to residential and hotel uses already discharging to the sewers (Section 3.3). Approved developments that were removed from the model for calibration were incorporated back into the model for the Existing Scenario.

These approved developments included in the Existing Scenario use the previous (higher) peaking curves.

This approach results in a model which concludes that the flow, while generally reduced from previous models, is still more conservative than the monitored flows, and at the same time, provides a higher level of confidence in the results.
5-1 August 2023
5 Project Sewer Capacity Analysis
This sewer study provides sewer capacity analysis for Project development flows and also includes sewer flows for existing and reasonably anticipated proposed development from the upstream tributary areas. This section presents the proposed Project development potential and provides sewer capacity analysis for Project development flows for various loading scenarios. All scenarios are built on the updated existing condition model discussed in Section 4. While the scenarios documented in this Section 5 analyze various sewer loading alternatives for the Project, the analyses in this section do not confer any entitlement or reservation of sewer capacity, with the exception of “reserved” capacities as discussed in Section 6.

5.1 Proposed Project - DisneylandForward
Within the DRSP, areas are currently divided into the following five Districts: Theme Park, Hotel, Parking, Future Expansion Districts, and District A. The DRSP, particularly the DRSP Zoning and Development Standards in Chapter 18.114 of the Anaheim Municipal Code, specifies the land uses allowed for each District. Uses currently allowed under the DRSP are shown in Section 1, Table 1-1. While no changes to overall boundaries of the DRSP are proposed, the Project would allow for the transfer of previously approved uses among the Theme Park, Hotel, Parking, and Future Expansion Districts and divide the DRSP into the following four Districts: Theme Park, Parking, Southeast District, and District A as summarized in Table 2-1, Proposed Development Summary for Disney Properties.

Within the ARSP, Disney ARSP Properties are within the Commercial Recreation (C-R) District (Development Area 1) of the ARSP. The ARSP, particularly the ARSP Zoning and Development Standards in Chapter 18.116 of the Anaheim Municipal Code, specifies the land uses allowed for this area. Uses currently allowed under the ARSP for properties owned or controlled by Disney are shown in Section 1, Table 1-1. The Project would provide Overlays for Disney ARSP Properties to allow certain DRSP uses on Disney ARSP Properties as summarized in Table 2-1.

The revised DisneylandForward District names and boundaries and the proposed ARSP Overlays are shown in Figure 5-1.

Table 5-1 – Proposed Development Summary for Disney Properties Disney DRSP Property Maximum Allowable Development Under DRSP Theme Park District – 389 acres
Hotel Rooms Up to 5,600 hotel rooms3
Hotel Retail/Restaurant Up to 300,000 sf
Hotel Meeting Space Up to 200,000 sf
Parking for Hotel Uses Up to 9,930 spaces
Theme Park District Retail Entertainment Up to 350,000 sf1 Theme Park and Back-of-house Uses Up to 6,850,000 sf1,5 Administration Building 475,000 sf
Administration Building Parking 2,300 spaces
Theme Park Parking 5,000 spaces2
5-2 August 2023
Parking District – 57.1 acres
East Parking Area (30.1 acres) Up to 17,600 spaces2
West Parking Area (27 acres) Up to 16,700 spaces
Southeast District – 24.7 acres
Theme Park Up to 390,000 sf5
Hotel Rooms Up to 1,852 hotel rooms3
Parking 5,100 spaces
Total Maximum Allowable Development 7,825,000 sf, 5,600 rooms, and 51,630 spaces Disney ARSP Properties8 Maximum Allowable Development Under ARSP Parking Overlay4 – 25.57 acres
1515 S. Manchester Ave
A portion of the parking spaces allocated to the East Parking Area of the DRSP and up to 1,116 hotel rooms 1585 S. Manchester Ave 1530 S. Harbor Blvd
333 W. Ball Road Up to 5,700 parking spaces and up to 534 hotel rooms6 Theme Park East Overlay – 52.6 acres7
1900 S. Harbor Blvd Up to 840,000 sf of theme park uses and up to 3,348 hotel rooms5
Theme Park West Overlay – 5.15 acres
1717 S. Disneyland Drive Up to 80,000 sf of theme park uses and up 564 hotel rooms5 1 Up to 350,000 sf of the theme park and back-of-house sf may be developed as Retail, Dining and Entertainment sf. 2 Up to 5,000 parking spaces may be constructed within the Theme Park District; however, an equivalent number of potential parking spaces would be removed from the allotment for the East Parking Area. 3 Up to 1,852 hotel rooms may be constructed in the Southeast District; however, an equivalent number of potential hotel rooms would be removed from the allotment for the Theme Park District, such that the maximum number of hotel rooms would not exceed 5,600.
4 For any square footage for back-of-house uses or limited retail, dining and entertainment uses, the traffic generation characteristics of said uses shall not exceed those associated with the otherwise permitted hotel/motel (including accessory uses) density as determined by the City Traffic and Transportation Manager prior to approval of building plans. Further, the proposed development shall not result in infrastructure impacts greater than those associated with the property's permitted hotel/motel density, unless such impacts are duly analyzed and mitigated pursuant to subsequent environmental review (such impacts shall be determined through a sewer and traffic impact analysis to be submitted to the City Engineer). Additional infrastructure studies may be required as determined by the Planning Director. 5 Theme park sf may be constructed in the Southeast District, the Theme Park East Overlay and the Theme Park West Overlay; however, an equivalent number of potential theme park sf would be removed from the allotment for the Theme Park District, such that the maximum theme park sf would not exceed 6,850,000 sf. The amount of restaurant sf in the Southeast District and the Theme Park East Overlay shall be further limited to up to 20 percent of the allotted theme park square footage in the District/Overlay.
6 Up to 5,700 parking spaces includes the number of existing spaces (1,324 spaces) plus additional spaces (4,376 spaces). 7 The planned extensions of Clementine Street and Gene Autry Way are proposed to be removed as part of the Project; therefore, the total acreage for the Theme Park East Overlay has been adjusted to include the acreages associated with these street rights-of-way; however, the maximum intensity of up to 3,348 hotel rooms would not change. 8 Actual acres for hotel density to be determined by a licensed Civil Engineer/Land Surveyor.

Source: WDI 2021.
5-3 August 2023
Proposed Modifications to The Disneyland Resort Project The Project proposes to reallocate allowable land uses within the Theme Park District (389 acres), the Parking District (57.1 acres), and the Southeast District (24.7 acres).3 The former Hotel District would become part of the Theme Park District and the Future Expansion District would become the Southeast District. The C-R Overlay and District A would continue to allow specific parcels in the DRSP to become part of The Disneyland Resort or be developed with the uses established by the ARSP. The Anaheim GardenWalk Overlay also would continue to apply to specific parcels within the DRSP area and would provide for the development of the Anaheim GardenWalk lifestyle retail and entertainment complex.

Instead, the Project would allow Disney to move the existing approvals to other areas governed by the DRSP and ARSP.

Proposed Modifications to the Anaheim Resort Specific Plan The Project would create a Theme Park East Overlay within the ARSP for the existing Toy Story Parking Lot and a Theme Park West Overlay within the ARSP for the existing Paradise Pier Hotel.

The Theme Park Overlay would allow Disney to develop theme park uses on these properties concurrently with the development of theme park uses on the expanded Theme Park District or the Southeast District of the DRSP. With the Project, Disney could develop up to 840,000 square feet of previously approved theme park uses within the Theme Park East Overlay and up to 80,000 square feet of previously approved theme park uses within the Theme Park West Overlay for a cumulative total of up to 920,000 square feet of previously approved theme park uses in these Overlays. Per the Anaheim Municipal Code, theme park uses are currently allowed in these Overlay areas with approval of a conditional use permit. 3 The total DRSP developable acreage would be increased with the proposed abandonment of public rights-of-way in Magic Way and Disneyland Drive, previously dedicated by Disney to the City. 5-4 August 2023
The Project also would create a Parking Overlay within the ARSP for the Disney ARSP Properties located at 1515 S. Manchester Avenue, 1585 S. Manchester Avenue, 1530 S. Harbor Boulevard, and 333 W. Ball Road. The Parking Overlay would permit development of the same type of parking and transportation facilities allowed under Anaheim Municipal Code Section 18.114.080 for the East Parking Area of the Parking District of the DRSP, and the same type of back-of-house uses, limited retail, dining and entertainment uses, and hotel uses allowed under Anaheim Municipal Code Section 18.114.060 for the Theme Park District of the DRSP.

5.2 Capacity Evaluation Criteria
The maximum depth-to-diameter (d/D) ratio for pipelines within the sewer collection system is used to identify pipeline capacity deficiencies. Current City design criteria is used when flagging pipe segments as deficient and determining the pipe diameter for improvements. For peak dry weather flow conditions, the maximum d/D ratio for identifying an existing pipeline as deficient is 0.67 for pipelines smaller than 12-inch and 0.75 for pipelines 12-inch and larger. For recommended improvement pipelines, a maximum d/D of 0.50 is used for pipelines smaller than 12-inch and 0.60 for pipelines 12-inch and larger.

5.3 Scenario 1: Current Approved Disney Full Buildout
Scenario 1 represents the current approved full buildout based on where Disney is permitted to develop under DRSP and ARSP for Disney properties. Since the proposed DisneylandForward Project requests significant flexibility in development locations, this Scenario also represents a Project scenario in which theme park use remains in the Theme Park District. This scenario is the worst case for the Katella North pipeline.

5.3.1 Scenario Development and Sewer Flows
City sewer capacity for the pipelines downstream of DLR properties are analyzed using the existing condition model and incorporating flows for future DLR uses. Current approved development is detailed in Table 1-1, Section 1, Background Information. The DRSP currently allows for an additional 3,258 hotel rooms in the Hotel District and an additional 3,657 thousand square feet (ksf) of theme park use in the Theme Park District. There is also an additional 170 ksf of allowed Administration Building use within Theme Park District. The ARSP allows for 1,116 hotel rooms in the proposed Parking Overlay at the existing Manchester Cast Member Lot, 3,348 hotel rooms in the proposed Theme Park East Overlay at the existing Toy Story Parking Lot, and an additional 45 hotel rooms within the proposed Theme Park West Overlay at the existing Paradise Pier Hotel. The ARSP also allows for 534 hotel rooms within the proposed Parking Overlay located at the northeast corner of Ball Road and Harbor Boulevard (333 W. Ball Road).

The DRSP allows up to 350 ksf of retail, dining, and entertainment within the allowed theme park square footage. There are 247 ksf of existing retail and restaurant uses within the existing theme park square footage with an allowed 103 ksf remaining. This quantity is subtracted from the remaining theme park square footage to calculate sewer flow separately and account for the higher sewer loading factor for potential restaurant use.
5-5 August 2023
Projected sewer flow for approved additional development is calculated using the proposed flow factors for theme park, hotel, and retail/restaurant uses presented in Section 2, Table 2-5. The resulting increase in sewer flow by District is shown in Table 5-2. Project sewer flow and service capacity for the proposed Parking Overlay located at 333 W. Ball Road is evaluated separately, in Section 5.5. This property is tributary to the Ball Road sewer system while the remaining Disney Properties are tributary to the Katella sewer system.

Table 5-2 – Sewer Flow for Remaining Approved DLR Development – Scenario 1 Disney DRSP/ARSP Property Remaining
Entitlement Units Factor(3) (gpd/unit)
Sewer Flow Increase
mgd gpm
DRSP Theme Park District(1) 3,554 ksf 400 1.42 987
DRSP Retail/Entertainment(2) 103 ksf 800 0.08 57
DRSP Administration Building(4) 170 ksf 100 0.02 12
DRSP Hotel District 3,258 rooms 150 0.49 339
ARSP Paradise Pier 45 rooms 150 0.01 5
ARSP East Parking 1,116 rooms 150 0.17 116
ARSP Toy Story/Theme Park East 3,348 rooms 150 0.50 349 Total 2.69 1,865
(1) Allowed theme park area (3,657 ksf) minus area that may be used as retail, dining, and entertainment (103 ksf). (2) Allowed theme park area that may be used as retail, dining, and entertainment. (3) Hotel flow factor of 150 gpd/rom includes hotel rooms and all auxiliary uses, consistent with the City's master plan. (4) Administration Building flow loaded to Ball Road near existing Admin Bldg.

5.3.2 Model Loading
Remaining entitled development flows for Disney Properties, shown in Table 5-2, were loaded into the model existing condition scenario based on the currently allowed uses in the DRSP and ARSP. Model loading for Scenario 1 is illustrated on Figure 5-2 and documented in Table 5-3.

Scenario 1 assumes that sewer flow from the Theme Park East Overlay (Toy Story Parking Lot) hotel use is sent to the Katella pipeline system. This flow is assumed to discharge to Harbor Boulevard and flow north to Katella. There is also a pipeline in Harbor Boulevard that flows south to Orangewood Avenue. Sending Project flow south on Harbor Boulevard is not feasible due to capacity constraints within downstream pipelines that are shared by Anaheim and the City of Garden Grove. DRSP Theme Park use is loaded based on discussion with Disney staff with 25% of the remaining use loaded to Harbor Boulevard, 25% to Katella Avenue, and 50% to Walnut Street (assumed via Magic Way). A sensitivity analysis is presented in Section 5.5 that looks at the impact of varying loads to these three locations and Disneyland Drive. DRSP remaining entitled Administration Building use is loaded near the existing Administration Building at Ball Road and is analyzed in Section 5.6.

Modeled flows are peaked on an hourly basis using established peaking curves. Modeled flow peaking for future theme park use is simulated using the existing scenario curve for Magic Way (April 2022, Flow Monitoring Site 1). This was the only gravity fed flow monitoring site from Disney Properties with all theme park flow and is therefore the best representation of that type of 5-6 August 2023
use. Future hotel use is peaked using the master plan curve for hotel and residential use. Future restaurant and retail uses are peaked using the master plan curve for non-residential uses. Model peaking curves are included in Appendix E.

Table 5-3 – Scenario 1 Manhole Loading
Location/Description
Manhole
Number
Units Flow Factor
(gpd/unit)
Average Day Demand
rooms ksf (mgd) (gpm)
Scenario 1
Theme Park District
Walnut St - DRSP Hotel OT065317 3,258 150 0.489 339
Disneyland Dr – PPH(1) SW066402 45 150 0.007 5
Magic Way - Theme Park SW065410 1,777 400 0.711 494
Magic Way - Retail Ent. SW065410 103 800 0.082 57
Harbor Blvd - Theme Park SW075417 889 400 0.355 247
Katella Ave - Theme Park SW076312 889 400 0.355 247
Ball Road - Admin. Bldg. SW075201 170 100 0.017 12
Theme Park East Overlay (Toy Story Parking Lot) (ARSP)
Harbor Blvd - ARSP Hotel HARBOR 2 3,348 150 0.502 349
Parking Overlay (ARSP)
Clementine Street - ARSP Hotel SW087201 1,116 150 0.167 116 Total Proposed Flow 7,767 3,827 2.686 1,865
(1) Remaining allowed uses under the ARSP for Paradise Pier Hotel (PPH) located in the proposed Theme Park West Overlay.

5.3.3 Identified Impacts
Figures 5-3 and 5-4 show the resulting modeled d/D along pipeline segments serving DLR Properties. Scenario 1 model simulations were run both with and without the proposed flow diversion at Harbor Boulevard and Katella Avenue. Figure 5-3 shows Scenario 1A results without the Harbor Boulevard diversion and Figure 5-4 shows Scenario 1B with the Harbor Boulevard diversion. Model output for Project scenarios are included in Appendix E.

As shown on Figure 5-3 (Scenario 1A, without the Harbor Boulevard diversion), the resulting d/D indicates modeled deficiencies in the northern Katella pipeline between Walnut Street and 9th Street. The modeled d/D in the northern Katella, pipeline just upstream of Disneyland Drive, just reached maximum capacity at 0.76 d/D in this Scenario with 50% of the remaining Project Theme Park uses loaded upstream. Figure 5-4 (Scenario 1B with the Harbor Boulevard diversion) shows modeled deficiencies in the northern Katella pipeline between Walnut Street and 9th Street and the southern Katella pipeline between Harbor Boulevard and Disneyland Drive. For both of these scenarios there are modeled deficiencies along two pipe segments in Clementine Street, just north of Katella Avenue, serving the ARSP Parking Overlay. The assumed flow to Magic Way, equal to half of the remaining theme park flow plus the remaining Retail Entertainment use, causes deficiencies along the 18-inch pipeline in Magic Way. These flows would likely be loaded to various locations along Walnut Steet, Magic Way, and Disneyland Drive as that quantity of 5-7 August 2023
development could not be concentrated at one location. Additionally, Disney is considering the potential abandonment of Magic Way as part of the Project, in which case the Magic Way sewer would become a private pipeline owned by Disney in the future. Scenario 3 in Section 5.5 further analyzes impacts from variations in theme park loads between Magic Way, Harbor Blvd, and Disneyland Drive. The sensitivity analysis in Section 5.5 identifies the quantity that could be loaded to Magic Way, if it were to remain a public City sewer, within that pipeline’s capacity criteria.

5.4 Scenario 2: DisneylandForward Full Buildout
Scenario 2 represents DisneylandFoward buildout in which maximum development is placed in the Southeast District and Theme Park East Overlay. This is the worst case for the Katella South pipeline.

5.4.1 Scenario Development and Sewer Flows
DisneylandForward allows the transfer of theme park and hotel uses permitted under the DLR Project to other areas of the DRSP and Disney’s ARSP Properties. The Project allowed densities are shown in Table 5-1 with revised Districts shown on Figure 5-1. These changes potentially relocate future sewer loading into the City’s system. DRSP-allowed theme park and hotel uses that currently are limited to the Theme Park District and Hotel District would be allowed in an expanded Theme Park District. Additionally, these uses could be located in the Southeast District and the Theme Park East Overlay (Toy Story Parking Lot) up to the following limits:
• Southeast District – Up to 390 ksf of theme park use and up to 1,852 hotel rooms; and • Theme Park East Overlay – Up to 840 ksf of theme park use (in addition to 3,348 hotel rooms currently allowed by the ARSP).

Encompassed within the combined Theme Park District is also the Theme Park West Overlay (Paradise Pier Hotel) with an additional 45 hotel rooms allowed under the ARSP.

Scenario 2 sewer flows, shown in Table 5-4, incorporate the maximum densities in the Southeast District and Theme Park East Overlay, including 20% restaurant use within the Theme Park square footage as the maximum allowed within these development areas. 5-8 August 2023
Table 5-4 – Sewer Flow for Future Project Development – Scenario 2 Project Districts Remaining
Entitlement Units Factor(3) (gpd/unit)
Sewer Flow Increase
mgd gpm
Theme Park District & Theme Park West Overlay
Theme Park(1) 2,324 ksf 400 0.930 646
Retail Entertainment 103 ksf 800 0.082 57
Administration Building 170 ksf 100 0.017 12
Hotel(2) 1,451 rooms 150 0.218 151
Southeast District
Theme Park 312 ksf 400 0.125 87
Restaurant (4) 78 ksf 800 0.062 43
Hotel 1,852 rooms 150 0.278 193
Theme Park East Overlay
Theme Park 672 ksf 400 0.269 187
Restaurant (4) 168 ksf 800 0.134 93
Hotel 3,348 rooms 150 0.502 349
Parking Overlay 1,116 rooms 150 0.167 116
Total 2.784 1,934
(1) Theme park area (2,324 ksf) = Total remaining (3,657 ksf) - Retail Entertainment (103 ksf) - Southeast (390 ksf) - Theme Park East (840 ksf)
(2) Hotel rooms (1,451 rooms) = Total remaining (3,258 rooms) - Southeast Overly (1,852) + ARSP (45 remaining PPH) (3) Hotel flow factor of 150 gpd/room includes hotel rooms and all auxiliary uses, consistent with the City’s master plan. (4) Restaurant use equal to a maximum of 20% of the allowed Theme Park square footage

5.4.2 Model Loading
Model loading for Scenario 2 is illustrated on Figure 5-5 and documented in Table 5-5. Scenario 2 assumes that sewer flows from the Theme Park East Overlay and Southeast District are sent to the Katella pipeline system as a worst-case scenario. Flow from the Theme Park East Overlay is assumed to discharge to Harbor Boulevard and flow north to Katella. There is also a pipeline in Harbor Boulevard that flows south to Orangewood Avenue. Sending Project flow south on Harbor Boulevard is not feasible due to capacity constraints within downstream pipelines that are shared by Anaheim and the City of Garden Grove.
5-9 August 2023
Table 5-5 – Scenario 2 Manhole Loading
Location/Description
Manhole
Number
Units Flow Factor
(gpd/unit)
Average Day Demand
rooms ksf (mgd) (gpm)
Scenario 2
Theme Park District
Walnut St - Hotel OT065317 1,406 150 0.211 146
Disneyland Dr - Hotel SW066402 45 150 0.007 5
Magic Way - Theme Park SW065410 1,162 400 0.465 323
Magic Way - Retail SW065410 103 800 0.082 57
Harbor Blvd - Theme Park SW075417 581 400 0.232 161
Katella Ave - Theme Park SW076312 581 400 0.232 161
Ball Road - Admin. Bldg. SW075201 170 100 0.017 12
Southeast District
Katella Ave - Hotel SW087414 1,852 150 0.278 193
Katella Ave - Theme Park SW087414 312 400 0.125 87
Katella Ave - Restaurant SW087414 78 800 0.062 43
Theme Park East Overlay
Harbor Blvd - Hotel HARBOR2 3,348 150 0.502 349
Harbor Blvd - Theme Park HARBOR2 672 400 0.269 187
Harbor Blvd - Restaurant HARBOR2 168 800 0.134 93
Parking Overlay
Clementine Street - Hotel SW087201 1,116 150 0.167 116
Total Proposed Flow 7,767 3,827 2.784 1,934

5.4.3 Identified Impacts
Scenario 2 model simulations were run both with and without the proposed flow diversion at Harbor Boulevard and Katella Avenue. Figure 5-6 shows the resulting d/D for the most constraining reach along each pipeline segment serving DLR properties without the Harbor Boulevard diversion (Scenario 2A) and Figure 5-7 shows modeled d/D with the proposed diversion (Scenario 2B).

For Scenario 2A with no flow diversion, there are modeled deficiencies in the 24-inch southern Katella pipeline between Harbor Boulevard and Disneyland Drive as shown on Figure 5-6. For Scenario 2B, with the flow diversion, there are modeled deficiencies in the 24-inch southern Katella pipeline between Harbor Boulevard and Disneyland Drive as shown on Figure 5-7. The southern Katella pipeline between Casa Vista and 9th Street is nearing deficiency with maximum Project loading upstream. There are no modeled deficiencies in the northern Katella pipeline for Scenario 2.
5-10 August 2023

5.5 Scenario 3: Project Loading Variation Analysis
Theme Park District
The exact locations of additional future development and resulting sewer loading within the existing DRSP area are unknown at this time. The expanded Theme Park District can discharge to Harbor Boulevard, Katella Avenue, Disneyland Drive, or Walnut Street. Due to this uncertainty, model simulations were conducted to determine the maximum loading to Harbor Boulevard, Disneyland Drive, and Magic Way/Walnut Street before triggering additional sewer improvements, other than those identified above. The results of maximum loading by location are summarized in Table 5-6. Also included in Table 5-6 is the maximum loading along the northern Katella pipeline between Harbor Boulevard and Disneyland Drive, representing the most restrictive segment in the northern pipeline other than the section between Walnut Street and 9th Street. Serving the ARSP Parking Overlay off of Manchester, the maximum loading to Clementine Street is also included in Table 5-6.

Table 5-6 – Theme Park District Loading Variation Analysis Street
Diam.
(in)
Maximum Development Prior to Upsize
Theme Park (ksf) Hotel (rooms)
Theme Park District
Harbor West 18 1,500 or 2,500
Katella North
(Harbor to DLD) 21 1,500 or 2,500
Disneyland Drive 15 to 18 1,800 or 3,258 (+45 PPH)
Magic Way 18 864 or 3,258
Walnut Ave. 24 2,520 and 3,258
Walnut Ave. 27 3,657 and 3,258
District Maximum 3,657 3,258
Parking Overlay
Clementine 12 N/A 860
District Maximum 0 1,116
Figures 5-8 and 5-9 show simulated maximum loading prior to triggering additional deficient pipelines identified in Scenarios 1 and 2. Figures 5-8 and 5-9 also show the resulting d/D with the maximum flow along each of the pipelines from Table 5-6, both without and with the Harbor Boulevard diversion, respectively. This sensitivity analysis is identified as Scenario 3. Simulating the combined maximum flow results in no additional deficiencies. This combined use is above the allowed entitlement and is included on Figures 5-8 and 5-9 to illustrate system capacity and sensitivity to varying load locations. This does not represent any entitlement for future capacity but simply a near-term condition.
5-11 August 2023
Cerritos Pipeline
The master plan and the South-Central Anaheim Sewer Study recommended diverting flow from the 27-inch pipeline in Walnut Street to the 18-inch pipeline in Cerritos Avenue. The diverted flow would include existing flow from Disneyland Park entering the Walnut Street pipeline from Magic Way, upstream of Cerritos Avenue. There is potential for Project flows loaded upstream of Cerritos Avenue to be diverted into the 18-inch pipeline along Cerritos Avenue. The Cerritos Avenue diversion would be an operational change as improvements are already in place to allow for this diversion. As such, simulations were run to evaluate the amount of Project flow that can be diverted to Cerritos Avenue without exceeding pipeline capacity criteria. There is approximately 1,000 feet of 18-inch pipeline along Cerritos Avenue before connecting to a newly constructed 24-inch pipeline near 9th Street and upstream of the railroad tracks. Results show that approximately 25% of the maximum allowed Project density in the Theme Park District may be diverted to Cerritos Avenue before the existing 18-inch pipeline would need to be replaced with an upsized pipe.

Project flows were loaded upstream of Cerritos Avenue using the same ratios of remaining allowed land use by type in the Theme Park District as shown in Table 5-7. Flow diversions are at the discretion of the City and provide essential emergency relief capacity and construction diversion capacity for the City’s needs. This does not represent an entitlement of any flow capacity for this project.

Table 5-7 – Cerritos Pipeline Alternate Loading Sensitivity Theme Park District Uses Maximum
Use Units Factor (gpd/unit)
Sewer Flow Increase
mgd gpm
Cerritos Avenue (25%)
Theme Park 890 ksf 400 0.356 247
Retail/Entertainment 25 ksf 800 0.020 14
Hotel 815 rooms 150 0.122 85
Total

0.498 346
Southeast District, Theme Park East Overlay, and Parking Overlay There are alternate loading locations for the Southeast District and Theme Park East Overlay to the 21-inch pipeline along Katella Avenue, east of Harbor Boulevard, and the 21-inch pipeline along Harbor Boulevard, south of Katella. Additionally, the Parking Overlay off of Manchester Avenue is tributary to the 12-inch pipeline in Clementine Street and the 21-inch Katella pipeline, east of Harbor Boulevard. Model simulations were conducted to determine loading to these legs of Katella and Harbor without exceeding pipeline capacities.

Hotel uses are allowed in the Parking Overlay with the maximum use (1,116 rooms) resulting in modeled deficiencies (d/D above 0.75) along Clementine Street as identified in Sections 5.3 and

5.4. The maximum hotel rooms that may be loaded to Clementine Street prior to modeled capacity deficiencies is equal to 860 rooms.

The maximum Project use that may be loaded to the 21-inch Katella pipeline, east of Harbor Boulevard, is approximately equal to the maximum loading of the Southeast District, located 5-12 August 2023
adjacent to Katella Avenue, and the Parking Overlay, tributary to Katella Avenue. With these loads, the modeled d/D is equal to 0.73 with 0.13 mgd of remaining capacity. The flow from the Southeast District represents approximately 30% of the combined Project flow from both the Southeast District and Theme Park East Overlay. The maximum hotel use also includes allowed rooms in the Parking Overlay, also tributary to the Katella system.

The maximum Project use from the combined Southeast District and Theme Park East Overlay that may be loaded to the Harbor Boulevard Pipeline, south of Katella, is approximately equal to the maximum allowed densities in those areas. The Southeast District and Theme Park East Overlay results in a modeled maximum d/D of 0.71 with 0.22 mgd remaining capacity. Table 5-8 summarizes Project land uses that may be loaded to the various segments of pipeline located upstream of the Harbor Boulevard and Katella Avenue intersection. This capacity evaluation is based on the 21-inch pipeline from just north of Convention Way up to the double 12-inch siphon connecting Harbor to Katella. The siphons were sized with the upstream reaches of the gravity pipeline and are assumed sufficient to accommodate capacity flows.

Table 5-8 –Southeast District and Theme Park East Overlay Alternate Loading Project Uses Max Use Units Factor
(gpd/unit)
Sewer Flow Increase
mgd gpm
Clementine Pipeline
Hotel 860 rooms 150 0.129 90
Total

0.129 90
Katella Pipeline (East of Harbor)1
Theme Park 312 ksf 400 0.125 87
Restaurant 78 ksf 800 0.062 43
Hotel 2,968 rooms 150 0.445 309
Total

0.632 439
Harbor Pipeline (South of Katella)2
Theme Park 984 ksf 400 0.394 273
Restaurant 246 ksf 800 0.197 137
Hotel 5,200 rooms 150 0.780 542
Total

1.370 952
(1) Southeast District plus 1,116 hotel rooms in the Parking Overlay. (2) The combined maximum density of the Southeast District and Theme Park East Overlay. 5-13 August 2023

5.6 Ball Road Pipeline Analysis
Disney owns a parcel within the ARSP Parking Overlay located on the northeast corner of Ball Road and Harbor Boulevard, at 333 W. Ball Road. The ARSP allows up to 534 hotel rooms at this location. This property is tributary to the sewer pipelines along Ball Road that flow to the west and discharge to OC San facilities at Euclid Avenue. The Ball Road property and tributary pipelines are illustrated on Figure 5-10. Additionally, the Project has remaining entitled Administration Building use equal to 170 ksf that was been loaded to Ball Road near the existing Administration Building. Model simulations were run, including the Project allowed hotel uses, to evaluate the downstream capacity of the sewer pipelines along Ball Road. Table 5-9 shows average sewer loading for the maximum allowed hotel rooms. There are no resulting pipeline deficiencies within the Ball Road system. Modeled d/D along the most restrictive reaches are included on Figure 5-10 with model output included in Appendix E.

Table 5-9 – Ball Road Parking Overlay Sewer Loading
Disney ARSP Property Remaining
Entitlement Units Factor (gpd/unit)
Sewer Flow Increase
mgd gpm
ARSP Parking Overlay (Ball Road) 534 rooms 150 0.08 55.6 Total 0.08 55.6
(1) Project sewer flow loaded to sewer MH# SW085317
(2) 170 ksf Admin. Bldg. use also loaded to Ball Road sewer (see Table 5-2) further downstream 6-1 August 2023
6 Alternative Improvements
The capacity analysis in Section 5 assumed that all Project flows are discharged to the Katella pipeline system, with the exception of 333 W. Ball Road which discharges to the Ball Road pipeline. Under this assumption, pipeline improvements would be required along Katella Avenue to accommodate the increase in flow for buildout of Disney Properties. There is also potential to divert flows away from the Katella pipeline system, thus reducing the impact of the Project and other future flows on these pipelines. These two categories of improvements, Katella pipeline improvements and flow diversions, are discussed separately in Sections 6.1 and 6.2, respectively.

Ultimately, alternatives to alleviate Project buildout capacity constraints identified in Section 5 may include pipeline improvements, as needed, based on the specific location and timing of Project flows and other future flows. Flow diversions are at the discretion of the City and provide essential emergency relief capacity and construction diversion capacity for the City’s needs. This does not represent an entitlement of any flow capacity for this project as flow diversions are not an option for consideration.

Model output for improvement scenarios are included in Appendix E.

Although this analysis identifies specific potential improvements needed to accommodate Disney buildout flows as analyzed in Section 5, there is a wide variation in where development could potentially occur and the degree to which sewer lines may be impacted. Additionally, some alternatives may not be physically feasible or practical. Depending on future conditions, the City may choose to implement only a portion of these improvements, or a variation, to best serve both Disney development and other future uses in the City.

6.1 Katella Pipeline Improvement Analysis
Pipeline improvements may be implemented to correct potential sewer deficiencies identified in Section 5 along the Katella pipeline system for Project buildout conditions. Katella pipeline improvements were identified for the two worst-case scenarios in Section 5. For the northern Katella pipeline, the worst-case scenario was Scenario 1A, which maximized development in the Theme Park District, without the Harbor Diversion. For the southern Katella pipeline, the worstcase scenario was Scenario 2B, which maximized development in the Theme Park East Overlay and Southeast District, with the Harbor Diversion in place.

These two Project scenarios could not occur at the same time because the location of Project uses and the operation of flow diversions differ between each scenario. Any pipeline upsizing would be based on build out flows from the latest master plan at the time of improvement and the specific location and density of Project development. Additionally, improvements must consider buildout flows within the entire basin tributary to the pipelines proposed for improvement to provide sufficient capacity for all future flows.

For the northern Katella worst-case condition (Scenario 1A), the 27-inch northern Katella pipeline between Walnut Street and 9th Street is identified as deficient. With maximum Project flow tributary to this reach of pipeline, the preliminary improvement size is simulated as a 33-inch line, assuming replacement of the existing 27-inch line. However, the ultimate improvement must be built to accommodate all anticipated flow from the build out condition not necessarily analyzed in 6-2 August 2023
this report. Figure 6-1 illustrates the loading, upsized pipe, and resulting peak d/D for the northern Katella scenario. Special design should be considered for the manhole at 9th Street, connecting the larger upstream pipeline with the two smaller 24-inch and 27-inch downstream pipelines, to minimize potential bottleneck issues. A section of pipeline just upstream of Disneyland Drive also reaches capacity (0.76 d/D) under Scenario 1A loading which conservatively assumes half of the remaining entitled Theme Park use is loaded upstream of Disneyland Drive (to Harbor and northern Katella pipelines). The upstream Project area consists of the existing Theme Park District which is largely developed. Section 5.5, Project Loading Variation Analysis, identifies the maximum loading upstream (prior to requiring improvements). For the southern Katella worstcase condition (Scenario 2B), the 24-inch southern Katella pipeline between Harbor Boulevard and West Street is identified as deficient. Figure 6-2 illustrates the loading, upsized pipe, and resulting peak d/D for the southern Katella scenario. Special design should be considered for the manhole at West Street, connecting the larger upstream pipeline with the two smaller 24-inch downstream pipelines, to minimize potential bottleneck issues. Alternatively, a third parallel sewer pipeline, south of the southern Katella sewer, may be constructed to convey flow from Harbor, the proposed development in the Southeast District and Theme Park East Overlay, as well as properties on the south side of Katella between Harbor and West Street. There would be benefits to constructing this sewer such as minimizing construction-related traffic impacts and reducing the number of existing City syphons. However, potential conflicts with existing utilities and other issues could render this alternative physically or economically infeasible.

A section of the southern Katella pipeline just upstream of 9th Street also reaches capacity (0.77 d/D) under Scenario 2B loading. The modeled flow split upstream of this section at West Street assumes 32 percent of flow is diverted from Katella Avenue to West Street with the remaining 68 percent continuing down Katella. The invert of the West Street pipeline at the diversion is above the invert of the connecting Katella pipeline causing lower base flows to continue along Katella.

It is likely that during higher flow conditions, more flow will be diverted to West Street.

Additionally, with a Katella pipeline improvement from Harbor Boulevard to West Street, design of the diversion manhole could direct more flow to West Street. Model results show capacity for an additional 2 mgd of flow downstream of the West Street diversion.

Other Pipelines
In addition to the Katella pipelines, potential capacity constraints were identified in Section 5 along pipelines in Magic Way and Clementine Street. For modeled Project Scenarios 1 through 3, theme park flows tributary to Walnut Street were loaded into the 18-inch pipeline in Magic Way, as the most upstream location from the Theme Park District. Disney Properties are the only uses that are tributary to Magic Way. Actual flows would likely be loaded to various locations along Walnut Street and elsewhere based on Project development. Additionally, as part of the Project, the City may potentially abandon Magic Way in which case it would become a private road in the future, owned by Disney, along with the sewer pipelines. Capacity limits along Magic Way are discussed in Section 5.5 and below in Section 6.3.

Deficiencies were identified along two segments of 12-inch pipeline in Clementine Street, just upstream of Katella Avenue. These modeled deficiencies result from the buildout of 1,116 rooms in the Parking Overlay and also buildout of Garden Walk. The modeled required diameter under 6-3 August 2023
this buildout condition is a 15-inch line (replacement). Capacity limits along Clementine Street are discussed in Section 5.5 and below in Section 6.3.

6.2 Flow Diversion Analysis
Flow diversions are at the discretion of the City and provide essential emergency relief capacity and construction diversion capacity for the City’s needs. This does not represent an entitlement of any flow capacity for this project nor is it intended to provide the incorrect understanding that developments have an option to choose flow diversions as an alternative to improvements. This section is intended only to provide the reader with an understanding of the potential flow diversions and is not considered as a recommendation for improvements.

Section 5 identified potential deficiencies in the northern Katella pipeline between Walnut Steet and 9th Street (Scenarios 1A and 1B). Recommendations have previously been made to divert flows away from Walnut Street, thus reducing flows to the northern Katella pipeline from Walnut Street to 9th Street and downstream. The City’s master plan recommended placing a board or plate in the existing gate in the manhole at Ball Road and Walnut Street that would send all flow down Ball Road. With this Ball Road diversion, the vast majority of sewer flow to the 27-inch Walnut Street pipeline would be generated from Disney Properties, including buildout flows. This diversion would be an operational change as the manhole already has a diversion structure. The master plan and the South-Central Anaheim Sewer Study also recommended diverting flow from the 27-inch pipeline in Walnut Street to the 18-inch pipeline in Cerritos Avenue (through a 15- inch siphon). This would divert all flow generated upstream including existing flow from Disneyland Park entering the Walnut Street pipeline from Magic Way (upstream of Cerritos Avenue). The Cerritos Avenue diversion would be an operational change as improvements are already in place to allow for this diversion.

Section 5 identified Project buildout deficiencies along the 24-inch southern Katella pipeline between Harbor Boulevard and West Street. Project flows tributary to the southern Katella pipeline would be generated from the Theme Park East Overlay, the Southeast District, and the Parking Overlay. A potential alternative was evaluated to send flows generated from the Theme Park East Overlay and the Southeast District away from the Katella pipeline system by discharging toward the southeast to the 21-inch pipeline in Mountain View Avenue which continues to the 21-inch Orangewood Avenue pipeline flowing east and ultimately to an OC San trunk sewer at Lewis Street and Simons Avenue. Pipeline improvements would be required to transmit flows to the Mountain View pipeline. A preliminary evaluation of required pipeline improvements identified design constraints that may violate current City design guidelines for gravity flow. As such, a sewer lift station and force main may be required. Therefore, this alternative was not considered viable for further consideration.

Modeled simulations were run implementing the potential flow diversions for Project buildout conditions. These simulations incorporate the following assumptions:
• Simulated flows use maximum allowed Project density in the Theme Park District and maximum allowed Project density in the Southeast District and Theme Park East Overlay.

This represents development beyond Project total allowed uses (equal to 128% of 6-4 August 2023
maximum project loading) for the purpose of illustrating the resulting capacity in both the northern and southern Katella pipelines under worst-case Project flow conditions; • Project Theme Park and Hotel flows are loaded downstream of the Cerritos Avenue diversion, sending these flows to Katella Avenue;
• The Ball Road diversion was not implemented. Flows to Walnut Street from Ball Road are diverted to Cerritos Avenue as part of the Cerritos diversion. Flow to Cerritos Avenue may be reduced with the Ball Road diversion;
• All potential buildout flows from the Southeast District and Theme Park East Overlay are diverted away from the Katella pipeline system, to Mountain View Avenue, and no other flows are included in this diversion; and
• Pipeline improvements would be required to transmit Project flows to the 21-inch pipeline system along Mountain View Avenue and/or Orangewood Avenue. Assumed pipeline improvement alignments to divert flows from the Southeast District and Theme Park East Overlay are included in the model. These connect at the upstream (north) end of the 21- inch pipeline along Mountain View Avenue.
• There is a potential flow split/diversion within the Mountain View tributary pipeline system located at Orangewood Avenue and Mountain View Avenue. To ensure sufficient capacity downstream, 100% of modeled flow was assumed to continue south along the 21- inch pipeline in Mountain View that discharges into the Orangewood Avenue pipeline flowing east. No flow was sent to the smaller, 10-inch, Orangewood Avenue pipeline that flows west and connects at Mountain View more upstream.

Model simulations were run using Project buildout loading with flow diversions both without and with the Harbor Boulevard diversion. Model loading and the resulting modeled peak flow d/Ds are illustrated on Figures 6-3 and 6-4, without and with the Harbor Boulevard diversion, respectively.

Additional Project flows that may be diverted to Cerritos are evaluated and discussed in Section

5.5, Loading Variation Analysis.

The Cerritos flow diversion provides sufficient capacity in the northern Katella pipeline between Walnut Street and 9th Street. Additionally, the Ball Road diversion would increase available capacity along Cerritos Avenue as needed. The Mountain View Avenue diversion was analyzed but does not appear to be feasible without pumping. A sensitivity analysis is provided in Section

5.5 to evaluate the amount of Project flow that may be sent to the southern Katella pipeline prior to exceeding existing pipeline capacities and requiring an upsize or diversion improvement.

6.3 Project Related Improvement Alternatives
The following alternative operational and improvement alternatives have been identified to provide sufficient capacity for Project buildout flows. This list represents a menu of alternatives of which a limited number would be implemented, as needed, based on the location and timing of Project flows, anticipated buildout flow within the tributary basin, and City operational and planning considerations.
6-5 August 2023

1. Improvements to address identified capacity constraints in the northern Katella pipeline between Walnut Street and 9th Street (Scenarios 1A and 1B) – This section of pipeline cannot accommodate maximum buildout densities in the Theme Park District. The capacity in this section of pipeline can accommodate uses within the Theme Park District up to quantities represented by Scenario 2A (Section 5). Capacity constraints for maximum density uses within the Theme Park District may be eliminated as follows:
a. Cerritos Diversion – Implement the diversion of flow from the 24-inch pipeline in Walnut Street to the 18-inch pipeline in Cerritos Avenue. This operational change provides sufficient capacity in the northern Katella pipeline, from Walnut Street to 9 th Street, for maximum allowed tributary Project uses within the Theme Park District. The City, at city cost, has already made the necessary improvements for this flow diversion and this change will eliminate the redundancy and emergency and construction options for future needs;
i. Ball Road Diversion – Divert all flow down Ball Road at Walnut Street, as needed, to reduce flow to Cerritos Avenue (see 1(c) below). A diversion structure is already in place to allow for this operational change. The potential impacts of this diversion were not studied here but were analyzed in the CAMPSS and South Central Anaheim Sewer Study.
ii. Cerritos Pipeline – The 18-inch pipeline along Cerritos Avenue has sufficient capacity for existing flow to be diverted from Walnut Street to Cerritos Avenue, including flow from Ball Road. Any Project flows discharging to Magic Way or Walnut Street, north of Cerritos Avenue, will be diverted into the Cerritos pipeline. The Cerritos pipeline has capacity for up to 25% of the maximum allowed uses within the Theme Park District (loaded upstream of Cerritos Avenue) with implementation of the Ball Road diversion. Additional loads would require approximately 1,000 feet of 18- inch pipeline be replaced between Walnut Street and just upstream of the railroad tracks near 9th Street. If this is needed, it is recommended to replace this reach of 18-inch with a 24-inch matching the downstream pipeline diameter, but this change would eliminate the redundancy, emergency, and construction options for future needs.
b. Katella Pipeline Improvement – Without the Cerritos Diversion, the northern Katella pipeline between Walnut Street and 9th Street would need to be upsized to a 33-inch pipeline (or larger if the Build-out sizing at the time of sewer design requires) to accommodate maximum densities within the Theme Park District.

2. Improvements to address identified capacity constraints in the southern Katella pipeline between Harbor Boulevard and West Street – This section of pipeline cannot accommodate proposed maximum density Project buildout of the Southeast District and Theme Park East Overlay. With no Harbor Boulevard diversion, this section of pipeline can accommodate flows from approximately 70% of the maximum Project densities in the combined Southeast District and the Theme Park East Overlay (Table 6-1). With the diversion of 6-6 August 2023
flows from Harbor Boulevard to the southern Katella pipeline, there is no remaining capacity for Project flows. Additional Project uses would require the following pipeline improvements and/or flow diversion to eliminate capacity constraints:
a. Southern Katella Pipeline Improvement – Upsize the southern Katella pipeline between Harbor Boulevard and West Street. The maximum pipeline diameter is a 33-inch line based on maximum Project density (or larger if the build-out sizing at the time of sewer design requires) discharging to the southern Katella pipeline along with the Harbor Boulevard flow diversion. The replacement diameter would be determined at the time of improvement.
b. Third Katella Sewer Pipeline – Construct a new, separate sewer south of the Southern Katella Sewer, to convey flow from Harbor, the proposed development in the Southeast District and Theme Park East Overlay, as well as properties on the south side of Katella between Harbor and West Street. There would be benefits to constructing this sewer such as minimizing construction-related traffic impacts and reducing the number of existing City syphons. However, potential conflicts with existing utilities and other issues could render this alternative physically or economically infeasible.
c. Mountain View Diversion – Divert all or a portion of flows from the Theme Park East Overlay and/or the Southeast District to the 21-inch pipeline in Mountain View Avenue. Pipeline improvements would be required to transmit flows to the Mountain View pipeline. A preliminary evaluation of required pipeline improvements identified design constraints that may violate current City design guidelines for gravity flow. Therefore, this alternative was not considered viable for future consideration.

3. Near-term capacity limits for other tributary pipelines based on Project uses – Tributary pipelines that serve Disney Properties have limited capacities which could be exceeded depending on the quantity of upstream Project development. Capacity limits provided below, in gallons per minute, represent remaining near-term pipeline capacities during peak flow conditions for the most limiting reach in each segment based on a maximum d/D of

0.75. These calculations while useful do not represent a reservation for future use or an entitlement for the Project. Sewer flow from various Project uses (theme park, hotel, and restaurant) peak at different times of day and thus cannot be combined to calculate total Project related peak flows. The following summarizes capacity limits along tributary pipelines, beyond which point pipeline improvements may be required:
a. Clementine Pipeline Improvement – Upsize approximately 400 feet of 12-inch pipeline along Clementine Street if and when Project hotel use in the Parking Overlay at Manchester Avenue exceeds approximately 860 rooms (1,116 rooms maximum allowable) with the remaining pipeline capacity of 240 gpm during peak flow conditions. Pipeline improvement would consist of approximately 400 feet of 15-inch replacement pipeline (SW087406 to SW087410) to accommodate maximum allowed uses;
6-7 August 2023
b. Magic Way Pipeline – As part of the Project, Magic Way may become a private street and potentially so would the existing 18-inch sewer between Walnut and Disneyland Drive. If this pipeline remains public (City-owned), it can accommodate up to approximately 864 ksf of theme park use with the remaining pipeline capacity of 552 gpm during peak flow conditions, before exceeding the capacity in the existing 18-inch pipeline (Table 5-6). If this sewer becomes private, it would be subject to, at a minimum, plumbing code requirements as well as relevant City Building Department requirements;
c. Harbor Boulevard – Project flows from the Theme Park District may discharge to the 18-inch western Harbor pipeline north of Katella. This Pipeline can accommodate up to 2,500 hotel rooms with the remaining capacity of 910 gpm during peak flow conditions (Table 5-6). If Project hotel uses are included in the Theme Park District tributary to this reach of pipeline, a sewer study would be needed to verify sufficient capacity at the time of development. Buildout theme park use is currently allowed in this area and thus would not be considered a Project impact;
d. Disneyland Drive – Project flows from the Theme Park District may discharge to the 15-inch pipeline along Disneyland Drive running south to Katella. Pipeline capacity can accommodate up to 1,800 ksf of theme park use or the maximum allowed hotel use of 3,258 room plus 45 rooms within the tributary Theme Park West Overlay. The remaining pipeline capacity during peak flow conditions is equal to 440 gpm; and
e. Northern Katella Pipeline – The most constraining reach in the northern Katella pipeline between Walnut Street and 9th Street can accommodate maximum buildout Project flow with the Cerritos Avenue diversion, as described in Item #1 above.

The next most constraining reach is from the discharge location from existing DCA uses to Katella Avenue and downstream to Disneyland Drive. This section of 21- inch pipeline can accommodate additional flows up to approximately 1,400 gpm during peak flow conditions discharging to Harbor Boulevard or the northern Katella pipeline, upstream of Disneyland Drive.
f. Assuming the City and Disney jointly cause an improvement to be constructed in Katella Avenue downstream of Harbor Boulevard, as detailed in the alternative projects above, the City will reserve a certain amount of capacity in the 21-inch Katella Avenue sewer between Harbor and Clementine. This capacity is based on the development of a parking structure facility in the East Parking Area generating a peak flow of approximately 50 gpm (see Appendix F - 8/9/2023 memorandum) plus up to 900 hotel rooms in the Southeast District/Theme Park East Overlay, or its equivalent flow in theme park or other allowed uses. This capacity reservation equates to a maximum peak flow of 285 gpm.
g. Assuming the City and Disney jointly cause an improvement to be constructed in Katella Avenue downstream of Harbor Boulevard, as detailed in the alternative projects above, the City will reserve a certain amount of capacity in the 18-inch Harbor Boulevard sewer that terminates just north of Convention Center Way and 6-8 August 2023
runs northerly to Katella. There is adequate remaining capacity for the maximum allowed uses in the Theme Park East Overlay and Southeast District in that sewer and that peak capacity of up to 2,000 gpm will be reserved for sewer flows from those areas. This equates to an average Project sewer flow of 950 gpm. Peak sewer flow from the various Project uses (theme park, hotel, and restaurant) do not peak at the same time of day and, thus, cannot be combined when determining capacity limits. If all or some of the 900 hotel rooms or its equivalent capacity from the Southeast District is actually loaded to this sewer in Harbor (preferred location) instead of to Katella (3f, above), then the reserved capacity for Disney in Katella can be reduced accordingly.

Exhibit 3-5
DisneylandForward Subsequent EIR
Current Development Districts
(04/04/2023 SAK) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_Current_Dev_Districts.pdf D:\Projects\3WDI\000400\GRAPHICS\EIR\3rd_City_Review\ex_Current_Dev_Districts_20230404.ai City of
Orange
Gene Autry Way
Manchester Ave
Clementine St
Zeyn St

CITY BOUNDARY
Wilkin Way
Walnut St
West Pl
Ox
Rd
Ana
he
im Blvd
West St
Katella Ave
Disney Way
Haster St
Harbor Blvd
Disneyland Dr
Magic Way
Cast Pl
East
Parking
Area

PARKING

DISTRICT

THEME PARK DISTRICT

PARKING

DISTRICT

FUTURE EXPANSION DISTRICT
West
Parking
Area
City of
Anaheim
City of
Anaheim
City of
Garden Grove
City of
Orange
Orangewood Ave
Vermont Ave
Anaheim Blvd
Chapman Ave
Cerritos Ave Cerritos Ave

CITY BOUNDARY

CITY BOUNDARY
West St
Haster St
Ball Rd
Walnut St
9th St
§¨¦5
Manchester Ave
HOTEL

DISTRICT
Convention Way
CA Adventure
Theme Park
Disneyland
Theme Park

C-R DISTRICT

C-R DISTRICT
Anaheim
Convention Center
0 750 1,500
Feet
City Boundary
LEGEND Notes/Sources
°

DRSP DISTRICTS
The Anaheim Resort
Boundary
The Disneyland Resort
Specific Plan Boundary
Theme Park District C-R District
Parking District
Hotel District
Future Expansion District

DISNEY ARSP PROPERTIES
City Legal Lot Data, 2022
City Boundary Data, 2022
Figure 1-1
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
SITE #1
MODEL AVG = 1,103 GPM
MODEL PK = 1,765 GPM
FM AVG = 365 GPM
FM PK = 689 GPM
SITE #1
18" SEWER
SITE #5
18" SEWER
SITE #5
MODEL AVG = 29 GPM
MODEL PK = 46 GPM
FM AVG = 6 GPM
FM PK = 27 GPM
SITE #2
12" SEWER
SITE #3
10" SEWER
SITE #6
15" SEWER
SITE #7
10" SEWER
SITE #8
10" SEWER
SITE #2
MODEL AVG = 188 GPM
MODEL PK = 394 GPM
FM AVG= 58 GPM
FM PK = 123 GPM
SITE #3
MODEL AVG = 167 GPM
MODEL PK = 267 GPM
FM AVG = 7 GPM
FM PK = 18 GPM
SITE #6
MODEL AVG = 436 GPM
MODEL PK = 698 GPM
FM AVG = 98 GPM
FM PK = 296 GPM
SITE #4
15" SEWER
SITE #4
MODEL AVG = 402 GPM
MODEL PK = 763 GPM
FM AVG = 266 GPM
FM PK = 715 GPM
SITE #7 (PUMPED)
MODEL AVG = 482 GPM
MODEL PK = 771 GPM
FM AVG = 114 GPM
FM PK = 541 GPM
SITE #8 (PUMPED)
MODEL AVG = 307 GPM
MODEL PK = 491 GPM
FM AVG = 107 GPM
FM PK = 417 GPM
Figure 2-1
April 2022 Flow Monitoring vs. Model Flows
Revised #1 Magic Way
AVG = 440 GPM
PEAK = 1,012 GPM
Revised DLH
AVG = 200 GPM
PEAK = 480 GPM
TOTAL #2, 3, 5, & 6
MODEL AVG = 820 GPM
FM AVG = 169 GPM
FM PK = 407 GPM
Revised #4 DLD
AVG = 300 GPM
PEAK = 720 GPM
Revised #7 DCA Katella
AVG = 238 GPM
PEAK = 547 GPM
Revised #8 DLP Harbor
AVG = 146 GPM
PEAK = 336 GPM
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community SITE 1 FM
AVG = 144 gpm
PK = 288 gpm
MODEL
AVG = 176 gpm (+32 / 23%)
PK = 355 gpm (+106 / 42%)
SITE 2
FM
AVG = 451 gpm
PK = 850 gpm
MODEL
AVG = 809 gpm (+358 / 80%)
PK = 1,697 gpm (+910 / 116%)
SITE 3N
FM
AVG = 764 gpm
PK = 1,194 gpm
MODEL
AVG = 888 gpm (+123 / 16%)
PK = 1,630 gpm (+529 / 48%)
SITE 3S
FM
AVG = 798 gpm
PK = 1,542 gpm
MODEL
AVG = 1,139 gpm (+341 / 43%)
PK = 2,430 gpm (+1,079 / 80%)
SITE 5
FM
AVG = 824 gpm
PK = 1,378 gpm
MODEL
AVG = 599 gpm (-225 / -27%)
PK = 938 gpm (-264 / -22%)
SITE 4N
FM
AVG = 1,735 gpm
PK = 2,463 gpm
MODEL
AVG = 1,741 gpm (6 / 0%)
PK = 2,746 gpm (438 / 19%)
SITE 4S
FM
AVG = 770 gpm
PK = 1,315 gpm
MODEL
AVG = 621 gpm (-149 / -19%)
PK = 1,180 gpm (-19 / -2%)
CALIB
AVG = 166 gpm (+22 / 15%)
PK = 328 gpm (+40 / 14%)
CALIB
AVG = 552 gpm (+101 / 22%)
PK = 1,041 gpm (+191 / 22%)
CALIB
AVG = 839 gpm (+101 / 10%)
PK = 1,453 gpm (+259 / 22%)
CALIB
AVG = 942 gpm (+144 / 18%)
PK = 1,818 gpm (+276 / 18%)
CALIB
AVG = 958 gpm (+134 / 16%)
PK = 1,617 gpm (+239 / 18%)
CALIB
AVG = 830 gpm (+60 / 8%)
PK = 1,606 gpm (+291 / 22%)
CALIB
AVG = 2,074 gpm (+339 / 20%)
PK = 2,945 gpm (+482 / 20%)
SITE 2

EAST OF HARBOR
SITE 3

EAST OF DLD
(TWO MANHOLES)
SITE 4

WEST OF WALNUT
(TWO MANHOLES)
SITE 1

MANCHESTER HARBOR DISNEYLAND DRIVE WALNUT

KATELLA
Figure 3-1
November 2022 Flow Monitoring vs Modeled Flows
SITE 5
WALNUT
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community

PARKING

DISTRICT

THEME PARK

DISTRICT
HOTEL

DISTRICT
C-R

DISTRICT
East
Parking
Area
West
Parking
Area
FUTURE

EXPANSION

DISTRICT
C-R DISTRICT Disneyland
Theme Park
CA Adventure
Theme Park
Katella Ave
Euclid St Walnut St Harbor Blvd Clementine St
Ball Rd d/D = 0.61 d/D = 0.59
Figure 4-1
Existing Condition - No Harbor Diversion
d/D = 0.56
NO
HARBOR
DIVERSION d/D = 0.49
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Katella Ave
Euclid St Walnut St Harbor Blvd Clementine St
Ball Rd d/D = 0.43 d/D = 0.52
Figure 4-2
Existing Condition - With Harbor Diversion
d/D = 0.69
HARBOR

DIVERSION
800 gpm d/D = 0.56

PARKING

DISTRICT

THEME PARK

DISTRICT
HOTEL

DISTRICT
C-R

DISTRICT
East
Parking
Area
West
Parking
Area
FUTURE

EXPANSION

DISTRICT
C-R DISTRICT Disneyland
Theme Park
CA Adventure
Theme Park
Exhibit 3-8
DisneylandForward Subsequent EIR
Proposed DRSP Development Districts and ARSP Overlays
(06/19/2023 SAK) R:\Projects\WDI\3WDI000400\Graphics\EIR\3rd_City_Review\ex_Prop_DRSP_ARSP_Dev_Districts.pdf D:\Projects\3WDI\000400\GRAPHICS\EIR\3rd_City_Review\ex_Prop_DRSP_ARSP_Dev_Districts_20230619.ai Figure 5-1
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Manhole
Project Loading MH
Outlet
Sewer Pipelines
Tributary Pipelines
Disney Properties

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST

OVERLAY
1,777 ksf Theme Park
103 ksf Retail Ent. 3,258 Keys45 Keys
889 ksf
Theme Park
889 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-2
Scenario 1 - Current DRSP and ARSP Full Buildout Model Loading Northern Katella Worst-Case Condition
9th St West St Disneyland Dr
Cerritos Ave Magic Way 3,348 Keys
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Manhole
Project Loading MH
Outlet
Sewer Pipelines
Tributary Pipelines
Disney Properties

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 3,258 Keys45 Keys
889 ksf
Theme Park
889 ksf
Theme Park 3,348 Keys 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-3
Scenario 1A - Limiting Reach Maximum d/D
No Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.60 0.62

0.58 0.76 0.73 0.47

0.60 0.61 1.00 0.48

0.42 0.64 0.58

1.00 NO
DIVERSION 0.48

0.58 0.43
1,777 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 3,258 Keys45 Keys
889 ksf
Theme Park
889 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-4
Scenario 1B - Limiting Reach Maximum d/D
With Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.60 0.62

0.42 0.78 to 1.00 0.65 0.47

0.53 0.68 0.77 0.54

0.47 0.64 0.58

1.00 HARBOR
DIVERSION 0.48

0.53 0.46 3,348 Keys
1,777 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,406 Keys45 Keys
581 ksf
Theme Park
581 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-5
Scenario 2 - DisneylandForward Project Loading
Southern Katella Worst-Case Condition
9th St West St Disneyland Dr
Cerritos Ave Magic Way
3,348 Keys
672 ksf Park
168 ksf Rest.
1,852 Keys
312 ksf Park
78 ksf Rest.
1,162 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,406 Keys45 Keys
581 ksf
Theme Park
581 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-6
Scenario 2A - Limiting Reach Maximum d/D
Without Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.73 0.54

0.55 0.78 to 1.00 0.47

0.57 0.70 0.55

0.47 0.59 0.53

0.78 NO
DIVERSION 0.55

0.52 0.46
3,348 Keys
672 ksf Park
168 ksf Rest. 0.74 0.70
1,852 Keys
312 ksf Park
78 ksf Rest.
1,162 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,406 Keys45 Keys
581 ksf
Theme Park
581 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-7
Scenario 2B - Limiting Reach Maximum d/D
With Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.73 0.54

0.38 1.00 0.47

0.48 0.60

0.51 0.59 0.53

0.78 HARBOR
DIVERSION 0.55

0.49 0.49 0.68 0.57 0.77
1,852 Keys
312 ksf Park
78 ksf Rest.
3,348 Keys
672 ksf Park
168 ksf Rest.
1,162 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST

OVERLAY
864 ksf
Theme Park
1,500 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 5-8
Scenario 3A -Theme Park Loading Variation
No Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.73 0.72

0.63 0.78 to 1.00 0.73

0.75 0.70 0.75 0.73
NO
DIVERSION 0.71

0.71 0.47 0.74
45 Keys
1,800 ksf Park
*NOTE: Loading exceeds allowed uses and is
presented here to illustrate capacity by reach
without triggering additional improvements. 0.75 1.00
1,852 Keys
312 ksf Park
78 ksf Rest.
5,200 Keys
984 ksf Park
246 ksf Rest.
3,258 Keys
1,656 ksf Park
(2,520 ksf total)
1,137 ksf Park
(3,657 ksf total)
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Manhole
Project Loading MH
Outlet
Sewer Pipelines
Tributary Pipelines
Disney Properties
864 ksf
3,258 Keys
Theme Park
1,656 ksf Park
(2,520 ksf total)
1,500 ksf
Theme Park 1,116 Keys

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area Katella Ave
Euclid St Walnut St Harbor Blvd Clementine St
Ball Rd

SOUTHEAST

DISTRICT
Figure 5-9
Scenario 3B -Theme Park Loading Variation
With Harbor Diversion
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.80

0.73 0.72

0.47 1.00 0.73

0.65 0.75 0.73
HARBOR
DIVERSION 0.71

0.66 0.51 0.58
45 Keys
1,800 ksf Park
1,137 ksf Park
(3,657 ksf total)
*NOTE: Loading exceeds allowed uses and is
presented here to illustrate capacity by reach
without triggering additional improvements 0.75 1.00 0.78 1,852 Keys
312 ksf Park
78 ksf Rest.

PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST

OVERLAY
5,200 Keys
984 ksf Park
246 ksf Rest.

Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Pipelines
Tributary Pipelines
Outlet
Disney Properties
534 Keys Ball Rd Ball Rd Euclid St
Harbor
Dinseyland Dr
Cambridge Walnut
BALL
DIVERSION Cerritos Ave Harbor
Figure 5-10
Ball Road Tributary Pipeline System

THEME PARK

DISTRICT PARKING

DISTRICT
West
Parking
Area

PARKING

OVERLAY
(333 W. Ball Rd.)

0.68 170 ksf
Admin.

Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Manhole
Project Loading MH
Outlet
Sewer Pipelines
Tributary Pipelines
Disney Properties
West
Parking
Area
THEME
PARK
WEST
OVERLAY 3,258 Keys45 Keys
889 ksf
Theme Park
889 ksf
Theme Park 3,348 Keys 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 6-1
Northern Katella Pipeline Improvement Alternative
Scenario 1A - Northern Katella Worst-Case Condition
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.60 0.62

0.58 0.73 0.47

0.60 0.61 0.48

0.42 0.64 0.58
NO
DIVERSION 0.48

0.58 0.43
33-inch
d/D = 0.57 0.76
15-inch
d/D = 0.52
NO

DIVERSION
NO

DIVERSION

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
1,777 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,406 Keys45 Keys
581 ksf
Theme Park
581 ksf
Theme Park 1,116 Keys Katella Ave Euclid St Walnut St Harbor Blvd Clementine St Ball Rd
Figure 6-2
Southern Katella Pipeline Improvement Alternative
Scenario 2B - Southern Katella Worst-Case Condition
9th St West St Disneyland Dr
Cerritos Ave Magic Way 0.73 0.54

0.38 0.47

0.48 0.60

0.51 0.59 0.53
HARBOR
DIVERSION 0.55

0.49 0.49 0.68 0.57
1,852 Keys
312 ksf Park
78 ksf Rest.
3,348 Keys
672 ksf Park
168 ksf Rest.

DIVERSION
NO
DIVERSION 0.77
33-inch
d/D = 0.54
15-inch
d/D = 0.52
1,162 ksf Theme Park
103 ksf Retail Ent.

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,116 Keys
889 ksf
Theme Park
889 ksf
Theme Park 45 Keys
3,258 Keys
1,880 ksf Park
NO

DIVERSION

MOUNTAIN

VIEW DIVERSION

CERRITOS
DIVERSION 0.60 0.60 0.76 0.58 0.52 0.60 0.73 0.46

0.63 0.62 0.80 0.69

0.71 Figure 6-3
Diversion Improvement Analysis
No Harbor Diversion
3,348 Keys
672 ksf Park
168 ksf Rest.
1,852 Keys
312 ksf Park
78 ksf Rest.

NO
DIVERSION Katella Ave Euclid St Walnut St Harbor Blvd
Ball Rd
9th St West St Disneyland Dr
Cerritos Ave
Clementine St
Magic Way
Haster
Wakefield Orangewood
Mountain View Lewis
*NOTE: Loading exceeds allowed uses and is
presented here to illustrate pipeline capacity.

NEW
ROW
& FM NEW PIPE
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
Legend
Sewer Manhole
Project Loading MH
Outlet
Sewer Pipelines
Tributary Pipelines
Disney Properties

THEME PARK

EAST OVERLAY

THEME PARK

DISTRICT
East
Parking
Area

SOUTHEAST

DISTRICT PARKING

OVERLAY

PARKING

DISTRICT
West
Parking
Area
THEME
PARK
WEST
OVERLAY 1,116 Keys
889 ksf
Theme Park
889 ksf
Theme Park 45 Keys
3,258 Keys
1,880 ksf Park
HARBOR

DIVERSION

MOUNTAIN

VIEW DIVERSION

CERRITOS
DIVERSION 0.60 0.53 0.65 0.42 0.59 0.73 0.65 0.46

0.63 0.62 0.80 0.69

0.71 Figure 6-4
Diversion Improvement Analysis
With Harbor Diversion
3,348 Keys
672 ksf Park
168 ksf Rest.
1,852 Keys
312 ksf Park
78 ksf Rest.

DIVERSION
Katella Ave
Euclid St Walnut St Harbor Blvd
Ball Rd
9th St West St Disneyland Dr
Cerritos Ave
Clementine St
Magic Way
*NOTE: Loading exceeds allowed uses and is
presented here to illustrate pipeline capacity. Haster
Wakefield Orangewood
Mountain View Lewis
NEW
ROW
& FM NEW PIPE

APPENDIX A
2006 SEWER FLOW MONITORING

DISNEYLAND RESORT

APPENDIX B
2006 AND 2022 FLOW MONITORING COMPARISON

EIGHT DISNEYLAND RESORT SITES
2006 AND 2022 FLOW COMPARISON (FLOWS IN MGD)

AVG PEAK

PEAK TO

AVG AVG
MODEL
PEAK

PEAK TO

AVG AVG PEAK

PEAK TO

AVG AVG
MODEL
PEAK

PEAK TO
AVG
1 1.03 1.83 1.78 1.15 1.82 1.60 0.52 0.99 1.89 0.63 1.46 2.30 2 0.06 0.43 7.20 0.08 0.18 2.12
3 0.03 0.38 12.82 0.01 0.03 2.49
5 (5) 0.12 0.26 2.15 0.16 0.36 2.23 0.01 0.04 4.28
6 0.14 1.01 7.18 0.63 1.01 1.60 0.14 0.43 3.00
4 (5) 0.34 0.73 2.16 0.46 0.79 1.72 0.38 1.03 2.70 0.43 1.04 2.40 7 (6) 0.21 1.39 6.62 0.69 1.11 1.60 0.16 0.78 4.75 0.34 0.78 2.30 8 (6) 0.16 0.71 4.42 0.44 0.71 1.60 0.16 0.60 3.87 0.21 0.48 2.30 Total(7) 2.09 6.75 4.04 6.74 1.47 4.07 1.90 4.45
(4) Model flows and peaks were calibrated not only to the April 2022 flow monitoring data but also the November 2022 flow monitoring data for City sewers. Flow to the November Walnut Site #5 is almost entirely from DLR properties (April 2022 Sites 1, 2, 3, 5, and 6). Magic Way theme park use (Site #1) was peaked higher to account for the mid-day peaks observed along Walnut. The other sites tributary to Walnut represent primarily hotel uses which peak in the morning and at night. DLR pumped Sites #7 and #8 are major contributors to November 2022 Katella Site #3N and all DLR properties to November Katella Site #4N. Diurnal curves were developed for each site based on observed flow patterns. Sites #2, 3, 5, and 6 were combined as a single load and peak curve for Disneyland Hotel. The peaks from these sites occur at different times of day but have a combined maximum peak of 2.4. Site #4 is a combination of theme park and hotel uses and typically peaks just after midnight, during off-peak hours. Pumped Sites #7 and #8 peak factors are lower than observed during flow monitoring due to the use of a higher average flow. See Note (6) for more on Sites #7 and #8 peaking. See attached calibration peaking curves for a comparison of DLR 2022 observed flows and updated model flows. (5) A portion of flows previously directed toward Old Cerritos (Site #5) in Master Plan have been re-routed south on Disneyland Drive (Site #4) due to underpass and bridge construction that was not properly reflected in the Master Plan. (6) Flow from DLR on-site sewer lift station causing short, high peaks that quickly dissipate in City pipelines. Average flows were based on the average of hourly peak flows. These sites represent theme park uses and are peaked at 2.3, matching Magic Way and consistent with average hourly peaks. Due to pumping, peaks can occur any time of day or night. Model peaking curves apply the highest factors during normal park hours rather than off-peak hours to peak with other uses (peaks in the middle of the night were not included). (7) Peak flows do not occur at the same time but the total is included here for comparison purposes.

0.29 0.69
(2) The master plan model used the peak flow from Table 6 of the 2006 Disney Flow Monitoring report and divided that value by 1.6 (model non-residential peak) to calculate average flow (because no diurnal flow monitoring data was provided and capacity is evaluated based on peak). Hotel use was already in the model so additional flow was added as theme park use and peaked at a max of 1.6 using the master plan curve for non-residential use. Hotel use peaks at 2.5 using the master plan diurnal curve for residential use, thus resulting in higher peak flows for sites with hotel uses (2 through 6). The peak to average ratio varies from combined uses that peak at different times of day. Peak factors are lower than observed during flow monitoring due to the use of a higher average flow. Master plan flows differ from flows for the Initial Model presented in Section 2, Table 2-3, due to the addition of Star Wars Galaxies Edge and Note (5) below. (3) Peak flows represent the highest peak observed over the flow monitoring period (April 2022). The peak to average ratio represents the highest single observed flow divided by the average for the entire flow monitoring period. Observed daily peaks are typically lower. 2022 FM(3) NEW BASELINE(4)

2.40 1.86
(1) Peak flow taken from the maximum values presented in Tables 3 and 6 of the 2006 Disney Flow Monitoring Report which have conflicting values for Site #5 and Site #7. The peak to average ratio represents the highest single observed flow divided by the average for the entire flow monitoring period. Observed daily peaks are typically lower.

FM SITE

0.51 0.95
2006 FM(1) MASTER PLAN(2)
2006 AND 2022 DLR FLOW COMPARISON (FLOWS IN MGD)
TABLES FROM DISNEY 2006 SEWER FLOW MONITORING REPORT:

Existing Disneyland Resort Flow
2022 Observed flow versus Updated Model
0 0.2

0.4 0.6

0.8 1

1.2 1.4

1.6 3/31/2022 4/2/2022 4/4/2022 4/6/2022 4/8/2022 4/10/2022 4/12/2022 4/14/2022 4/16/2022 4/18/2022 Flow (mgd)
Magic Way Site 1
Observed Flow Modeled Flow - Calibration
0 0.1

0.2 0.3

0.4 0.5

0.6 0.7

0.8 3/31/2022 4/2/2022 4/4/2022 4/6/2022 4/8/2022 4/10/2022 4/12/2022 4/14/2022 4/16/2022 4/18/2022 Flow (mgd)
DLH Sites 2, 3, 5, and 6
Observed Flow Modeled Flow - Calibration
0 0.2

0.4 0.6

0.8 1

1.2 3/31/2022 4/2/2022 4/4/2022 4/6/2022 4/8/2022 4/10/2022 4/12/2022 4/14/2022 4/16/2022 4/18/2022 Flow (mgd)
DLD Site 4
Observed Flow Modeled Flow - Calibration
0 0.1

0.2 0.3

0.4 0.5

0.6 0.7

0.8 0.9
1 4/17/2022 4/19/2022 4/21/2022 4/23/2022 4/25/2022 4/27/2022 4/29/2022 5/1/2022 5/3/2022 Flow (mgd)
Pumped DCA to Katella Site 7
Observed Flow Modeled Flow - Calibration
0 0.10.20.30.40.50.6
4/17/2022 4/19/2022 4/21/2022 4/23/2022 4/25/2022 4/27/2022 4/29/2022 5/1/2022 5/3/2022 Flow (mgd)
Pumped DLP to Harbor Site 8
Observed Flow Modeled Flow - Calibration

APPENDIX
April 2022 Flow Monitoring Data

APPENDIX C
APRIL 2022 FLOW MONITORING

DISNEYLAND RESORT
SITE #8
12" SEWER
SITE #7
10" SEWER
SITE #4
15" SEWER
SITE #6
15" SEWER
SITE #3
10" SEWER
SITE #2
12" SEWER
SITE #5
18" SEWER
SITE #1
18" SEWER
Disneyland Resort
Flow Monitoring Locations
Site #1 – Magic Way e/o Walnut (Magic Way looking west) (EP withTCP Req’d)

WALNUT ST
MAGIC WAY 18" SEWER
Site #5 – 350’ e/o Walnut in Disneyland access way
18" SEWER WALNUT ST
CERRITOS AVE AS-BUILTS SHOW 18"
Site #2 – 12” line 600’ s/o Cerritos into 21” Walnut Trunk Sewer from east (SB Walnut looking north) (EP with TCP Req’d)

WALNUT ST
LYNNE AVE 12" SEWER

Site #3 – 10” line 750’ s/o Cerritos into 21” Walnut Trunk Sewer from east (SB Walnut looking north) (EP withTCP Req’d)

WALNUT ST
CALLE DE LAS ESTRELLAS 10" SEWER

Site #6 – DLH and Central Plant (MH 1 DLH Atlas) 15” Disneyland sewer serving majority of DLH

WALNUT ST
15" SEWER

Site #4 – Disneyland Drive 600’ n/o Katella on 15” (DL Drive southbound lanes looking north) (EP withTCP Req’d)

KATELLA AVE DISNEYLAND DRIVE
15" SEWER

Site #7 – Disneyland California Adventure (10” Disneyland sewer on Coaster Road 200’ n/o Katella) 10" SEWER KATELLA AVE
Site #8 – Harbor Blvd 3,000’ n/o Katella (12” sewer in Disneyland, backstage approximately 50’ west of centerline of Harbor

12" SEWER

SITE 1 - MAGIC WAY
2022.04 Site 1 Magic Way MH
MH at ~1391 S. Walnut St
MH in WB lane of Magic Way, east of
address
X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 132.5"
MH Coordinates: 33.812719, -117.927466
Moderate open channel hydraulics with no issues
from laterals
Avg Velocity Avg Measured Level Multiplier

1.9 fps 5.0" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from east, north & south; monitored
downstream line to get total flow from park.

Traffic Safety
Cones used to delineate work zone.

Land Use
Residential Commercial Industrial Trunk
X
West
Manhole Depth
18"
155.5"
Round
18"/18"
Good
Concrete
None observed
Passed

0.4 2-D

23.0"

5.0"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 1 Magic Way MH
MH at ~1391 S. Walnut St
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 1 Magic Way MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 4/18/2022
Velocity (fps) Level (in) Flow (mgd)
Average 1.899 5.028 0.529
Maximum 2.450 7.160 0.992
Minimum 1.120 2.330 0.097
Pipe Size 18.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 1.933 5.070 371.955 RainFall Inches
Maximum 2.280 6.900 619.512
Minimum 1.400 2.960 119.097 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.896 4.973 361.414 RainFall Inches
Maximum 2.320 7.050 662.151
Minimum 1.170 2.370 72.361 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.885 5.043 368.159 RainFall Inches
Maximum 2.450 7.160 688.748
Minimum 1.120 2.330 67.500 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.880 4.895 353.163 RainFall Inches
Maximum 2.330 6.660 599.998
Minimum 1.240 2.660 90.764 5/09/2022
5/9/2022 2:01:39 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 377 620 1.64 0 88 0.20
Sun 4/3/2022 358 624 1.74 1 88 0.20
Mon 4/4/2022 362 662 1.83 2 88 0.20
Tue 4/5/2022 353 553 1.57 3 88 0.20
Wed 4/6/2022 347 587 1.69 4 88 0.20
Thu 4/7/2022 357 521 1.46 5 132 0.30
Fri 4/8/2022 376 646 1.72 6 176 0.40
Sat 4/9/2022 367 585 1.60 7 264 0.60
Sun 4/10/2022 373 630 1.69 8 308 0.70
Mon 4/11/2022 367 659 1.80 9 396 0.90
Tue 4/12/2022 352 611 1.73 10 484 1.10
Wed 4/13/2022 388 689 1.77 11 572 1.30
Thu 4/14/2022 363 593 1.63 12 748 1.70
Fri 4/15/2022 373 588 1.58 13 880 2.00
Sat 4/16/2022 370 618 1.67 14 1012 2.30
Sun 4/17/2022 358 600 1.68 15 880 2.00
16 704 1.60
365 612 1.68 17 660 1.50
388 689 1.77 18 572 1.30
365 689 1.89 19 660 1.50
20 528 1.20
21 484 1.10
22 440 1.00
23 264 0.60
AVG 440 1.00
Highest Peak to Avg
Site 1 Flow Summary Magic Way Curve
Average
Peak Day

0.00 0.50

1.00 1.50

2.00 2.50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Magic Way
Peak Factor
0 100
200
300
400
500
600
700
800
1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 1 - Magic Way
SITE 2 - WALNUT
2022.04 Site 2 Walnut MH
MH at ~1545 S. Walnut St
MH in SB lane, east of address X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 102.5"
MH Coordinates: 33.808969, -117.928444
Turbulent open channel hydraulics due to lateral
connection configuration with mainline
Avg Velocity Avg Measured Level Multiplier

1.5 fps 2.0" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from east & north; monitored upstream east
line from park as directed.

Traffic Safety
Used cones & signs per site-specific CATTCH
requirements.

Land Use
Residential Commercial Industrial Trunk
X
South
Manhole Depth
12"
122.5"
Round
12"/12"
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
Good
Concrete lined
None observed
Passed

0.4 2-D

20.0"

8.0"
Upstream East
2022.04 Site 2 Walnut MH
MH at ~1545 S. Walnut St
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Site
Installation Process
Upstream East Upstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 2 Walnut MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 4/18/2022
Velocity (fps) Level (in) Flow (mgd)
Average 1.486 1.993 0.084
Maximum 2.730 2.550 0.177
Minimum 0.790 1.690 0.036
Pipe Size 12.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 1.555 2.014 61.943 RainFall Inches
Maximum 2.110 2.550 112.014
Minimum 0.810 1.730 25.694 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.427 1.990 55.765 RainFall Inches
Maximum 2.280 2.320 105.416
Minimum 0.790 1.690 25.139 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.519 1.993 59.316 RainFall Inches
Maximum 2.730 2.360 122.639
Minimum 0.880 1.750 28.264 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.522 1.981 58.958 RainFall Inches
Maximum 2.710 2.210 120.416
Minimum 1.000 1.720 32.083 5/09/2022
5/9/2022 2:01:01 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 60 100 1.67 0 80 0.40
Sun 4/3/2022 57 93 1.64 1 40 0.20
Mon 4/4/2022 54 96 1.78 2 40 0.20
Tue 4/5/2022 56 105 1.87 3 40 0.20
Wed 4/6/2022 54 101 1.87 4 40 0.20
Thu 4/7/2022 56 101 1.80 5 40 0.20
Fri 4/8/2022 57 86 1.52 6 140 0.70
Sat 4/9/2022 58 90 1.56 7 360 1.80
Sun 4/10/2022 60 106 1.76 8 480 2.40
Mon 4/11/2022 58 117 2.02 9 280 1.40
Tue 4/12/2022 60 123 2.04 10 220 1.10
Wed 4/13/2022 56 90 1.63 11 160 0.80
Thu 4/14/2022 63 105 1.66 12 120 0.60
Fri 4/15/2022 58 90 1.53 13 120 0.60
Sat 4/16/2022 61 97 1.59 14 140 0.70
Sun 4/17/2022 57 120 2.10 15 240 1.20
16 340 1.70
58 101 1.75 17 340 1.70
63 123 1.93 18 320 1.60
58 123 2.12 19 200 1.00
20 240 1.20
21 320 1.60
22 320 1.60
23 200 1.00
AVG 200 1.00
Site 2 Flow Summary Walnut Hotels
Average
Peak Day
Highest Peak to Avg
0 20
40 60
80 100
120
140
1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 2 - Walnut 12

0.00 0.50

1.00 1.50

2.00 2.50

3.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Walnut Hotels
Peak Factor
(Combines Sites 2, 3, 5, and 6)
SITE 3 - WALNUT
2022.04 Site 3 Walnut MH
MH at ~1613 S. Walnut St
MH in SB lane, east of address X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 110.5"
MH Coordinates: 33.808438, -117.928438
Slow to moderate open channel hydraulics
Avg Velocity Avg Measured Level Multiplier

0.9 fps 0.6" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from east & north; monitored upstream east
line from park as directed.

Traffic Safety
Used cones & signs per site-specific CATTCH
requirements.

Land Use
Residential Commercial Industrial Trunk
X
South
Manhole Depth
10"
126"
Round
10"/10"
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
Good
Concrete lined
None observed
Passed

0.4 2-D

15.6"

5.6"
Upstream East
2022.04 Site 3 Walnut MH
MH at ~1613 S. Walnut St
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Site
Installation Process
Upstream East Upstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 3 Walnut MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 5/3/2022
Velocity (fps) Level (in) Flow (mgd)
Average 0.881 0.666 0.009
Maximum 1.530 1.160 0.026
Minimum 0.234 0.230 0.001
Pipe Size 10.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 0.871 0.714 7.033 RainFall Inches
Maximum 1.210 0.930 13.421
Minimum 0.540 0.430 2.082 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.845 0.714 6.918 RainFall Inches
Maximum 1.432 1.104 14.498
Minimum 0.234 0.410 0.846 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.883 0.716 7.211 RainFall Inches
Maximum 1.420 1.160 17.935
Minimum 0.296 0.427 1.233 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.980 0.668 7.227 RainFall Inches
Maximum 1.432 0.881 15.136
Minimum 0.530 0.230 1.080 5/09/2022
5/9/2022 2:00:22 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 8.1 14.5 1.79 0 80 0.40
Sun 4/3/2022 7.8 13.7 1.76 1 40 0.20
Mon 4/4/2022 6.5 10.5 1.61 2 40 0.20
Tue 4/5/2022 4.3 9.2 2.13 3 40 0.20
Wed 4/6/2022 6.6 13.3 2.01 4 40 0.20
Thu 4/7/2022 6.6 14.5 2.19 5 40 0.20
Fri 4/8/2022 8.2 13.8 1.69 6 140 0.70
Sat 4/9/2022 8.8 17.9 2.04 7 360 1.80
Sun 4/10/2022 8.7 14.5 1.67 8 480 2.40
Mon 4/11/2022 7.1 11.7 1.65 9 280 1.40
Tue 4/12/2022 6.1 15.2 2.50 10 220 1.10
Wed 4/13/2022 5.4 14.3 2.62 11 160 0.80
Thu 4/14/2022 6.5 16.9 2.61 12 120 0.60
Fri 4/15/2022 7.7 15.1 1.95 13 120 0.60
Sat 4/16/2022 8.6 15.3 1.79 14 140 0.70
Sun 4/17/2022 7.9 13.2 1.66 15 240 1.20
Mon 4/18/2022 5.5 9.0 1.64 16 340 1.70
17 340 1.70

7.2 14.0 1.95 18 320 1.60

8.8 17.9 2.04 19 200 1.00

7.2 17.9 2.50 20 240 1.20
21 320 1.60
22 320 1.60
23 200 1.00
AVG 200 1.00
Site 3 Flow Summary Walnut Hotels
Average
Peak Day
Highest Peak to Avg
0 2
4 6
8 10
12 14
16 18
20 1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 3 - Walnut 10
0 0.2

0.4 0.6

0.8 1

1.2 1.4

1.6 1.8
2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Walnut Hotels
Peak Factor

0.00 0.50

1.00 1.50

2.00 2.50

3.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Walnut Hotels
Peak Factor
SITE 4 - DL DR
2022.04 Site 4 DL Dr MH
MH at ~1710 Disneyland Dr
MH on SB lane, ~600’ north of Katella
& south of address
X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 70"
MH Coordinates: 33.804812, -117.924082
Moderate open channel hydraulics with no issues
from lateral
Avg Velocity Avg Measured Level Multiplier

3.7 fps 2.7" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from north & west; monitored downstream
line to get total flow from park.

Traffic Safety
Cones used to delineate work zone.

Land Use
Residential Commercial Industrial Trunk
X
South
Manhole Depth
15 92"
Round
15"/15"
Good
Concrete
None observed
Passed

0.4 2-D

22.1"

7.1"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 4 DL Dr MH
MH at ~1710 Disneyland Dr
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 4 DL Dr MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 4/18/2022
Velocity (fps) Level (in) Flow (mgd)
Average 3.729 2.706 0.381
Maximum 4.830 4.710 1.029
Minimum 2.780 1.140 0.076
Pipe Size 15.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 3.689 2.619 250.326 RainFall Inches
Maximum 4.790 4.440 653.262
Minimum 2.920 1.210 61.041 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 3.753 2.760 273.416 RainFall Inches
Maximum 4.830 4.710 714.581
Minimum 2.850 1.150 55.764 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 3.706 2.665 257.284 RainFall Inches
Maximum 4.540 4.000 535.276
Minimum 2.780 1.140 52.917 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 3.708 2.635 255.317 RainFall Inches
Maximum 4.660 4.270 603.193
Minimum 2.880 1.220 60.903 5/09/2022
5/9/2022 1:59:50 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 270 653 2.42 0 600 2.00
Sun 4/3/2022 301 715 2.37 1 90 0.30
Mon 4/4/2022 254 565 2.23 2 60 0.20
Tue 4/5/2022 252 469 1.86 3 60 0.20
Wed 4/6/2022 271 477 1.76 4 60 0.20
Thu 4/7/2022 280 608 2.17 5 150 0.50
Fri 4/8/2022 269 483 1.79 6 240 0.80
Sat 4/9/2022 295 552 1.87 7 360 1.20
Sun 4/10/2022 281 527 1.88 8 450 1.50
Mon 4/11/2022 256 511 2.00 9 720 2.40
Tue 4/12/2022 236 385 1.63 10 330 1.10
Wed 4/13/2022 239 395 1.66 11 240 0.80
Thu 4/14/2022 256 438 1.71 12 270 0.90
Fri 4/15/2022 263 535 2.04 13 270 0.90
Sat 4/16/2022 269 535 1.99 14 270 0.90
Sun 4/17/2022 263 603 2.29 15 270 0.90
16 300 1.00
266 528 1.99 17 330 1.10
301 715 2.37 18 300 1.00
266 715 2.69 19 300 1.00
20 360 1.20
21 360 1.20
22 450 1.50
23 360 1.20
AVG 300 1.00
Highest Peak to Avg
Site 4 Flow Summary Disneyland Drive
Average
Peak Day

0.00 0.50

1.00 1.50

2.00 2.50

3.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Disneyland Drive
Peak Factor
0 100
200
300
400
500
600
700
800
1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 4 - DL Drive
SITE 5 - HOTEL
2022.04 Site 5 Hotel MH
MH at ~W. Cerritos Av & S. Walnut St
MH on SB lane of Hotel access road,
~350’ east of intersection
X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 101.5"
MH Coordinates: 33.810584, -117.927336
Slow to moderate open channel hydraulics with
no issues from laterals
Avg Velocity Avg Measured Level Multiplier

0.4 fps 0.9" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from east, north & south; monitored
downstream line to get total flow from park.

Traffic Safety
Used cones & signs due to proximity of hotel.

Land Use
Residential Commercial Industrial Trunk
X
West
Manhole Depth
18"
126"
Round
18"/18"
Good
Brick
None observed
Passed

0.4 2-D

24.5"

6.5"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 5 Hotel MH
MH at ~W. Cerritos Av & S. Walnut
St
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 5 Hotel MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 4/18/2022
Velocity (fps) Level (in) Flow (mgd)
Average 0.401 0.849 0.009
Maximum 2.000 1.720 0.039
Minimum 0.150 0.360 0.001
Pipe Size 18.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 0.437 0.831 6.598 RainFall Inches
Maximum 0.780 1.290 18.447
Minimum 0.150 0.430 0.740 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.424 0.846 6.656 RainFall Inches
Maximum 2.000 1.470 22.676
Minimum 0.150 0.360 0.568 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.389 0.846 6.293 RainFall Inches
Maximum 1.170 1.720 27.029
Minimum 0.150 0.370 0.591 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.287 0.851 4.659 RainFall Inches
Maximum 0.750 1.610 26.277
Minimum 0.150 0.430 0.740 5/09/2022
5/9/2022 1:59:15 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 6.9 18.5 2.69 0 80 0.40
Sun 4/3/2022 6.4 19.0 2.95 1 40 0.20
Mon 4/4/2022 5.5 18.0 3.28 2 40 0.20
Tue 4/5/2022 5.6 16.1 2.90 3 40 0.20
Wed 4/6/2022 8.4 21.9 2.62 4 40 0.20
Thu 4/7/2022 7.0 22.7 3.24 5 40 0.20
Fri 4/8/2022 6.9 21.4 3.12 6 140 0.70
Sat 4/9/2022 7.4 18.5 2.49 7 360 1.80
Sun 4/10/2022 6.9 19.1 2.76 8 480 2.40
Mon 4/11/2022 5.9 21.0 3.57 9 280 1.40
Tue 4/12/2022 5.6 17.8 3.20 10 220 1.10
Wed 4/13/2022 5.1 19.9 3.93 11 160 0.80
Thu 4/14/2022 5.8 20.3 3.49 12 120 0.60
Fri 4/15/2022 7.0 20.1 2.88 13 120 0.60
Sat 4/16/2022 7.2 27.0 3.76 14 140 0.70
Sun 4/17/2022 4.4 26.3 5.95 15 240 1.20
16 340 1.70

6.4 20.5 3.22 17 340 1.70

8.4 27.0 3.23 18 320 1.60

6.4 27.0 4.25 19 200 1.00
20 240 1.20
21 320 1.60
22 320 1.60
23 200 1.00
AVG 200 1.00
Site 5 Flow Summary Walnut Hotels
Average
Peak Day
Highest Peak to Avg
0 5
10 15
20 25
30 1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 5 - Old Cerritos

0.00 0.50

1.00 1.50

2.00 2.50

3.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Walnut Hotels
Peak Factor
(Combines Sites 2, 3, 5, and 6)
SITE 6 - DLH ATLAS
2022.04 Site 6 MH 1 DLH Atlas
MH at ~1633 S. Walnut St
MH on access road next to Central
Plant, SE of address
X
Install Date: 4/01/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 69.5"
MH Coordinates: 33.807312, -117.928215
Slow to moderate open channel hydraulics with
no issues from lateral
Avg Velocity Avg Measured Level Multiplier

0.75 fps 4.1" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from east & NE; monitored downstream line
to get total flow from park.

Traffic Safety
Cones used to delineate work zone.

Land Use
Residential Commercial Industrial Trunk
X
West
Manhole Depth
15"
91"
Round
15"/15"
Good
Concrete
None observed
Passed

0.4 2-D

21.4"

6.4"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 6 MH 1 DLH Atlas
MH at ~1633 S. Walnut St
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 6 MH 1 DLH Atlas
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/1/2022
Meter Stop Date To 4/18/2022
Velocity (fps) Level (in) Flow (mgd)
Average 0.745 4.155 0.142
Maximum 1.440 6.430 0.426
Minimum 0.240 2.690 0.024
Pipe Size 15.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 0.747 4.052 92.957 RainFall Inches
Maximum 1.220 5.580 203.540
Minimum 0.250 2.690 16.780 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.739 4.168 99.292 RainFall Inches
Maximum 1.290 6.120 253.436
Minimum 0.250 2.750 17.532 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.752 4.149 98.630 RainFall Inches
Maximum 1.440 6.430 295.567
Minimum 0.240 2.720 17.286 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.745 4.067 94.212 RainFall Inches
Maximum 1.250 6.020 257.881
Minimum 0.340 2.890 27.293 5/09/2022
5/9/2022 1:58:45 PM
4/1/2022 thru 4/18/2022
Day Date
Average
Flow
(gpm)
Peak
Flow
(gpm)
Peak
Factor Hour Average
Peak
Factor
Sat 4/2/2022 97.0 218.7 2.26 0 80 0.40
Sun 4/3/2022 102.1 238.6 2.34 1 40 0.20
Mon 4/4/2022 103.1 216.1 2.10 2 40 0.20
Tue 4/5/2022 95.7 253.4 2.65 3 40 0.20
Wed 4/6/2022 84.2 220.0 2.61 4 40 0.20
Thu 4/7/2022 91.0 161.0 1.77 5 40 0.20
Fri 4/8/2022 112.8 249.9 2.22 6 140 0.70
Sat 4/9/2022 108.9 240.9 2.21 7 360 1.80
Sun 4/10/2022 111.9 274.5 2.45 8 480 2.40
Mon 4/11/2022 90.5 184.7 2.04 9 280 1.40
Tue 4/12/2022 86.2 189.0 2.19 10 220 1.10
Wed 4/13/2022 83.4 182.8 2.19 11 160 0.80
Thu 4/14/2022 100.8 206.4 2.05 12 120 0.60
Fri 4/15/2022 102.5 252.7 2.46 13 120 0.60
Sat 4/16/2022 106.2 295.6 2.78 14 140 0.70
Sun 4/17/2022 93.1 179.9 1.93 15 240 1.20
16 340 1.70

98.1 222.8 2.27 17 340 1.70
112.8 295.6 2.62 18 320 1.60

98.1 295.6 3.01 19 200 1.00
20 240 1.20
21 320 1.60
22 320 1.60
23 200 1.00
AVG 200 1.00
Site 6 Flow Summary Walnut Hotels
Average
Peak Day
Highest Peak to Avg
0 50
100
150
200
250
300
350
1-Apr 2-Apr 3-Apr 4-Apr 5-Apr 6-Apr 7-Apr 8-Apr 9-Apr 10-Apr 11-Apr 12-Apr 13-Apr 14-Apr 15-Apr 16-Apr 17-Apr 18-Apr 19-Apr Flow (gpm)
2022 Flow Monitoring Date
Site 6 - Walnut 15

0.00 0.50

1.00 1.50

2.00 2.50

3.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Walnut Hotels
Peak Factor
(Combines Sites 2, 3, 5, and 6)
SITE 7b - DCA TO KATELLA
2022.04 Site 7b Coaster MH
MH at ~1313 Disneyland Dr
MH on Coaster Rd, ~220’ north of
Katella Av
X
Install Date: 4/18/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 71"
MH Coordinates: 33.804038, -117.920141
Moderate open channel hydraulics with no issues
from lateral or drop inlet
Avg Velocity Avg Measured Level Multiplier

1.5 fps 2.7" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from north, south (drop) & west; monitored
downstream line to get total flow.

Traffic Safety
Cones used to delineate work zone.

Land Use
Residential Commercial Industrial Trunk
X
South
Manhole Depth
10"
90"
Round
10"/10"
Good
Concrete
None observed
Passed

0.4 2-D

18.7"

8.7"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 7b Coaster MH
MH at ~1313 Disneyland Dr
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 7b Coaster MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/18/2022
Meter Stop Date To 5/3/2022
Velocity (fps) Level (in) Flow (mgd)
Average 1.487 2.705 0.164
Maximum 3.600 7.200 0.779
Minimum 0.270 0.370 0.001
Pipe Size 10.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 1.520 2.822 124.015 RainFall Inches
Maximum 3.600 7.200 540.873
Minimum 0.340 0.370 1.280 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.476 2.660 109.973 RainFall Inches
Maximum 3.510 7.010 536.539
Minimum 0.270 0.370 0.944 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 1.415 2.417 92.558 RainFall Inches
Maximum 3.153 6.319 430.833
Minimum 0.477 0.510 3.942 5/09/2022
5/9/2022 1:56:00 PM
4/18/2022 thru 5/3/2022
Day Date
Average
Flow
(gpm)
Peak
Flow
(gpm)
Peak
Factor Hour Max
Peak
Factor
Tue 4/19/2022 131.0 506.2 3.86 0 48 0.20
Wed 4/20/2022 143.4 474.2 3.31 1 48 0.20
Thu 4/21/2023 129.1 540.9 4.19 2 48 0.20
Fri 4/22/2022 128.3 528.8 4.12 3 24 0.10
Sat 4/23/2022 92.1 461.8 5.01 4 71 0.30
Sun 4/24/2022 107.1 536.5 5.01 5 48 0.20
Mon 4/25/2022 106.0 515.1 4.86 6 357 1.50
Tue 4/26/2022 110.7 423.6 3.83 7 119 0.50
Wed 4/27/2022 128.0 395.4 3.09 8 143 0.60
Thu 4/28/2022 113.4 424.0 3.74 9 190 0.80
Fri 4/29/2022 113.4 419.1 3.70 10 214 0.90
Sat 4/30/2022 85.9 373.3 4.35 11 286 1.20
Sun 5/1/2022 95.1 430.8 4.53 12 357 1.50
Mon 5/2/2022 95.3 419.3 4.40 13 357 1.50
14 547 2.30
112.8 460.6 4.08 15 357 1.50
143.4 540.9 3.77 16 405 1.70
112.8 540.9 4.80 17 381 1.60
18 405 1.70
19 333 1.40
20 452 1.90
21 405 1.70
22 95 0.40
23 24 0.10
AVG 238 1.00
Site 7b Flow Summary DCA to Katella
Average
Peak Day
Highest Peak to Avg

0.00 0.50

1.00 1.50

2.00 2.50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 DCA Katella
Peak Factor
0 50
100
150
200
250
300
350
400
450
500
550
18-Apr 19-Apr 20-Apr 21-Apr 22-Apr 23-Apr 24-Apr 25-Apr 26-Apr 27-Apr 28-Apr 29-Apr 30-Apr 1-May 2-May 3-May 4-May Flow (gpm)
2022 Flow Monitoring Date
Site 7b - DCA to Katella
SITE 8b - DL TO HARBOR
2022.04 Site 8b Backstage MH
MH at ~1400 Harbor Blvd
MH backstage, ~25’ west of Disney
fenceline, west of address
X
Install Date: 4/18/2022
Access: System Type:

Sanitary Storm
Map
Technology
Flow Meter
Meter Depth: 117"
MH Coordinates: 33.812069, -117.915615
Slow to moderate open channel hydraulics with
major surface disruption from drop inlet
Avg Velocity Avg Measured Level Multiplier

0.9 fps 4.7" 1.0
Gas
O2 H2S CO LEL

20.9 0 0 0
Notes
Inlets from south (drop) & west; monitored
downstream line to get total flow from park.

Traffic Safety
Cones used to delineate work zone.

Land Use
Residential Commercial Industrial Trunk
X
East
Manhole Depth
10"
134"
Round
10"/10"
Good
Concrete
None observed
Passed

0.4 2-D

16.9"

6.9"
Downstream
Flow Heading
Sensor Direction
Sensor Dist. to Crown
Sensor Offset
Velocity Profile Data
Velocity Profile Taken
Silt
Manhole Material
Pipe Condition
Pipe Shape
Inner Pipe Size (In/Out)
Monitored Pipe Size
PSOMAS
Anaheim, CA 92802
MH # unknown
Site Report
Confidential Proprietary Information
5/09/2022
Sewer Plan
2022.04 Site 8b Backstage MH
MH at ~1400 Harbor Blvd
Anaheim, CA 92802
Meter Site Document
Manhole Before Install
Installed
Downstream
Site
Installation Process
Downstream Pipe Size
Temporary Flow Study
PSOMAS
2022.04 Site 8b Backstage MH
Utility Systems, Science and Software
Santa Ana, CA 92705
601 N. Parkcenter Dr, Suite 209
Meter Start Date From 4/18/2022
Meter Stop Date To 5/3/2022
Velocity (fps) Level (in) Flow (mgd)
Average 0.923 4.738 0.155
Maximum 1.920 8.470 0.600
Minimum 0.280 3.070 0.028
Pipe Size 10.000
Estimated Capacity (mgd) Not Calculated
Capacity Used Not Calculated
Sensor Type Hach - Flodar
El Cajon, CA 92021
9314 Bond Av, Suite A
Velocity (fps) Level (in) Flow (gpm)
Average 0.961 4.816 114.670 RainFall Inches
Maximum 1.920 8.470 416.597
Minimum 0.280 3.210 20.376 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.909 4.705 104.481 RainFall Inches
Maximum 1.830 6.760 288.821
Minimum 0.280 3.110 19.233 5/09/2022
Velocity (fps) Level (in) Flow (gpm)
Average 0.886 4.579 97.517 RainFall Inches
Maximum 1.730 6.820 256.553
Minimum 0.340 3.070 25.721 5/09/2022
5/9/2022 1:56:38 PM
4/18/2022 thru 5/3/2022
Day Date
Average
Flow
(gpm)
Peak
Flow
(gpm)
Peak
Factor Hour Max
Peak
Factor
Tue 4/19/2022 106.2 232.1 2.19 0 29 0.20
Wed 4/20/2022 108.5 416.6 3.84 1 29 0.20
Thu 4/21/2023 123.5 389.3 3.15 2 29 0.20
Fri 4/22/2022 113.6 261.7 2.30 3 29 0.20
Sat 4/23/2022 101.2 187.9 1.86 4 29 0.20
Sun 4/24/2022 116.3 265.1 2.28 5 44 0.30
Mon 4/25/2022 114.1 236.2 2.07 6 58 0.40
Tue 4/26/2022 100.6 242.7 2.41 7 88 0.60
Wed 4/27/2022 109.8 288.8 2.63 8 102 0.70
Thu 4/28/2022 91.9 244.7 2.66 9 131 0.90
Fri 4/29/2022 94.7 216.2 2.28 10 161 1.10
Sat 4/30/2022 115.4 256.6 2.22 11 190 1.30
Sun 5/1/2022 90.4 233.5 2.58 12 248 1.70
Mon 5/2/2022 98.2 234.5 2.39 13 292 2.00
14 336 2.30
106.0 264.7 2.50 15 292 2.00
123.5 416.6 3.37 16 234 1.60
106.0 416.6 3.93 17 219 1.50
18 190 1.30
19 219 1.50
20 175 1.20
21 161 1.10
22 146 1.00
23 88 0.60
AVG 146 1.00
Site 8b Flow Summary Magic Way
Average
Peak Day
Highest Peak to Avg
0 50
100
150
200
250
300
350
400
450
18-Apr 19-Apr 20-Apr 21-Apr 22-Apr 23-Apr 24-Apr 25-Apr 26-Apr 27-Apr 28-Apr 29-Apr 30-Apr 1-May 2-May 3-May 4-May Flow (gpm)
2022 Flow Monitoring Date
Site 8b - DL to Harbor

0.00 0.50

1.00 1.50

2.00 2.50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Magic Way - DLP Use
Peak Factor

APPENDIX D
NOVEMBER 2022 FLOW MONITORING

KATELLA BASINS
15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Disney.Psomas.TFMcCA22
2022 DisneyLandForward Sewer Flow
Monitoring
Final Report Submitted to Psomas
December 2, 2022
2022 DisneyLandForward Sewer Flow Monitoring
Prepared For:

Mike Swan, P.E.

Psomas
5 Hutton Centre Drive, Suite 300
Santa Ana, CA 92707
Prepared By:

ADS, LLC
15201 Springdale St.

Huntington Beach, CA 92649
Friday, 04 November 2022 to Friday, 18 November 2022
December 2, 2022
Mike Swan, P.E.

Psomas
5 Hutton Centre Drive, Suite 300
Santa Ana, CA 92707
SUBJECT: 2022 DisneyLandForward Sewer Flow Monitoring
Dear Mike Swan,
ADS is pleased to submit the report for 2022 DisneyLandForward Sewer Flow Monitoring completed on behalf of Psomas. The metering was conducted at seven (7) locations. The study was conducted during the period of Friday, 04 November 2022 to Friday, 18 November 2022.

The report contains depth, velocity, and quantity hydrographs as well as daily long tables for the metering period. An Excel file containing depth, quantity, and velocity entities for the monitoring location in 5-minute format has also been provided.

In addition, we would be happy to further explain any details about the report that may seem unclear. Should you have any questions or comments, you may contact the Project Manager, Shay Koerber at 619-520-9168.

It has been our pleasure to be of service to you in the performance of this project. Thank you for choosing ADS products and services to meet your flow monitoring needs.

Sincerely,

ADS ENVIRONMENTAL SERVICES
Jack Wilson
Hydraulic Data Analyst
1 Psomas entered into an agreement with ADS Environmental Services to conduct flow monitoring at (7) seven flow locations in the City of Anaheim, CA Sanitary Collection System. Once in place, the flow monitoring equipment was to be used to measure depth, velocity, and to quantify flows. The purpose of this study is to determine average daily flow and diurnal curve for various sewer flows in and around the Disneyland Resort area for calibration of City’s hydraulic model.

Project Scope
The scope of this study involved using a flow monitor to quantify wastewater flow at the designated locations for the study period. Specifically, the study included the following key components. • Investigate the proposed flow-monitoring site for adequate hydraulic conditions • Flow monitor installation
• Flow monitor confirmations and data collections
• Flow data analysis
Equipment installation was completed on November 3, 2022. The monitoring period began on November 4, 2022 and was completed on November 18, 2022. Upon completion of the study, equipment was removed from the system.

The ADS FlowShark Triton monitor was selected for this project. This flow monitor is an area velocity flow monitor that uses both the Continuity and Manning's equations to measure flow.

The ADS FlowShark Triton monitor consists of data acquisition sensors and a battery-powered microcomputer. The microcomputer includes a processor unit, data storage, and an on-board clock to control and synchronize the sensor recordings. The monitor was programmed to acquire and store depth of flow and velocity readings at 5-minute intervals.

The FS Triton monitor features cross-checking using multiple technologies in each sensor for continuous running of comparisons and tolerances. The FS Triton monitor can support two (2) sets of sensors. The sensor option used for this project was:

The Peak Combo Sensor installed at the bottom of the pipe includes three types of data acquisition technologies.

Scope and Methodology
Introduction
Flow Monitoring Equipment
2 The up looking ultrasonic depth uses sound waves from two independent transceivers to measure the distance from the sensor upward toward the flow surface; applying the speed of sound in the water and the temperature measured by sensor to calculate depth.

The pressure depth is calculated by using a piezo-resistive crystal to determine the difference between hydrostatic and atmospheric pressure. The pressure sensor is temperature compensated and vented to the atmosphere through a desiccant filled breather tube.

To obtain peak velocity, the sensor sends an ultrasonic signal at an angle upward through the widest cross-section of the oncoming flow. The signal is reflected by suspended particles, air bubbles, or organic matter with a frequency shift proportional to the velocity of the reflecting objects. The reflected signal is received by the sensor and processed using digital spectrum analysis to determine the peak flow velocity.

Installation
Installation of flow monitoring equipment typically proceeds in four steps. First, the site is investigated for safety and to determine physical and hydraulic suitability for the flow monitoring equipment. Second, the equipment is physically installed at the selected location. Third, the monitor is tested to assure proper operation of the velocity and depth of flow sensors and verify that the monitor clock is operational and synchronized to the master computer clock. Fourth, the depth and velocity sensors are confirmed and line confirmations are performed.

In pipes up to 42 inches in diameter, the sensors were mounted on expandable stainless-steel rings, inserted at least a foot upstream into influent pipes and tightened against the inside walls of the pipes. Influent pipe installations reduce the influences of turbulence and backwater often caused by changes in channel geometry in manholes. 3 Data Collection, Confirmation, and Quality Assurance
Data collects were done remotely via wireless connect on a weekly basis. As needed, during the monitoring period, field crews visit each monitoring location to verify proper monitor operation and document field conditions. The following quality assurance steps are taken to assure the integrity of the collected data:

Measure power supplies: monitors were powered by dry cell battery packs. Voltages were recorded and battery packs replaced, as necessary. Separate batteries provided back-up power to memory allowing primary batteries to be replaced without loss of data.

Clock synchronization: Field crews synchronized monitor clocks to master clocks.

Confirm depth and velocity readings: Field crews descended into meter manholes to manually measure depths and velocities and compare the meter readings to confirm that they agreed. The site met the criteria for confirmation for depth and velocity unless noted otherwise in the site commentary section. They also measured silt levels, if any, in the inverts of the pipes. Silt areas were subtracted from flow areas to compute true areas of flow.

Confirm average velocities through cross-sectional velocity profiles: Since ADS velocity sensors measure peak velocity, field crews collected cross-sectional velocity profiles in order to develop a relationship between peak and average velocity in lines that meet the hydraulic criteria.

Upload and Review Data: Data collected from the monitors were uploaded and reviewed by a Data Analyst for completeness, outliers and deviations in the flow patterns, which indicate system anomalies or equipment failure.

There are two main equations used to measure open channel flow: the Continuity Equation and the Manning Equation. The Continuity Equation, which is considered the most accurate, can be used if both depth of flow and velocity are available. In cases where velocity measurements are not available or not practical to obtain, the Manning Equation can be used to estimate velocity from the depth data based on certain physical characteristics of the pipe (i.e. the slope and roughness of the pipe being measured). However, the Manning equation assumes uniform, steady flow hydraulic conditions with non-varying roughness, which are typically invalid assumptions in most sanitary sewers. The Continuity Equation was used exclusively for this study.

Continuity Equation
The Continuity Equation states that the flow quantity (Q) is equal to the wetted area (A) multiplied by the average velocity (V) of the flow.

Flow Quantification Methods
4 Q = A * V
This equation is applicable in a variety of conditions including backwater, surcharge, and reverse flow.

Data Analysis
A flow monitor is typically programmed to collect data at 5-minute intervals throughout the monitoring period. The monitor stores raw data consisting of (1) the ultrasonic depth, (2) the peak velocity and (3) the pressure depth. The data is imported into ADS's proprietary software and is examined by a data analyst to verify its integrity. The data analyst also reviews the daily field reports and site visit records to identify conditions that would affect the collected data.

Velocity profiles and the line confirmation data developed by the field personnel are reviewed by the data analyst to identify inconsistencies and verify data integrity. Velocity profiles are reviewed and an average to peak velocity ratio is calculated for the site. This ratio is used in converting the peak velocity measured by the sensor to the average velocity used in the Continuity equation. The data analyst selects which depth sensor entity will be used to calculate the final depth information. Silt levels present at each site visit are reviewed and representative silt levels established.

Occasionally the velocity sensor's performance may be compromised resulting in invalid readings sporadically during the monitoring period. This is generally caused by excessive debris (silt) blocking the sensor's crystals, shallow flows (~< 1") that may drop below the top of the sensor or very clear flows lacking the particles needed to measure rate. In order to use the Continuity equation to quantify the flow during these periods, a Data Analyst and/or Engineer will use the site's historical pipe curve (depth vs. velocity) data along with valid field confirmations to reconstitute and replace the false velocity recordings with expected velocity readings for a given historical depth along the curve.

Selections for the above parameters can be constant or can change during the monitoring period. While the data analysis process is described in a linear manner, it often requires an iterative approach to accurately complete.

Data Presentation
This type of flow monitoring project generates a large volume of data. To facilitate review of the data, results have been provided in graphical and tabular formats. The flow data is presented graphically in the form of scattergraphs and hydrographs.

Hydrographs are based on 5-minute averaging. Tables are provided in daily average format. These tables show the flow rate for each day, along with the daily minimum and maximums, the times they were observed, the total daily flow, and total flow for the month (or monitoring period). The following explanation of terms may aid in interpretation of the flow data table and hydrograph.

DEPTH - Final calculated depth measurement (in inches)
QUANTITY - Final calculated flow rate (in MGD)
VELOCITY - Final calculated flow velocity (in feet per second) REPORT TOTAL - Total volume of flow recorded for the indicated time period (in MG) Data Analysis and Presentation
5 Site01-Man
Site Commentary

SITE INFORMATION

OBSERVATIONS
Average flow depth, velocity, and quantity data observed during Friday, 04 November 2022 to Friday, 18 November 2022, along with observed minimum and maximum data, are provided in the following table.

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 3.82 1.14 0.212
Minimum 2.04 0.48 0.036
Maximum 8.76 1.86 0.900
Min Time 11/17/2022 3:10:00 AM 11/17/2022 2:55:00 AM 11/17/2022 2:55:00 AM Max Time 11/08/2022 8:30:00 AM 11/08/2022 8:05:00 AM 11/08/2022 8:40:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Round (18 in H)
Silt 0.00 (in)
6 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site01-Man
Good straight through flow
Not investigated

0.25"

1.10 15'
Precast/Good
VCP/Good

2.75 09/28/22 @ 12:55 AM
Standard Traffic Control with No Safety Concerns
Harbor and Manchester, Anaheim
Not Investigated
Sensor
Location
15'

18.00 x 18.00

18.00 18.00
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
Location
ADS Site
Location
flow
dir.

Anaheim
11/03/22
“
“
SW086325
7 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site01-Man
8 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site01-Man
9 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site01-ManPipe: Round (18 in H), Silt0.00 in
DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:00 2.49 17:15 4.71 3.80 04:30 0.81 11:25 1.49 1.23 04:30 0.078 11:25 0.346 0.222 0.222 11/05/2022 05:00 2.37 14:35 5.19 3.81 04:45 0.81 14:35 1.52 1.23 04:45 0.074 14:35 0.415 0.224 0.224 11/06/2022 04:10 2.14 17:25 4.76 3.84 03:55 0.73 17:25 1.51 1.21 04:00 0.059 17:25 0.364 0.228 0.228 11/07/2022 03:15 2.30 08:10 5.05 3.74 03:20 0.72 08:05 1.63 1.17 03:15 0.062 08:05 0.426 0.211 0.211 11/08/2022 02:35 2.29 08:30 8.76 4.42 02:35 0.65 08:05 1.86 1.27 02:35 0.055 08:40 0.900 0.305 0.305 11/09/2022 04:15 2.39 19:00 5.24 3.83 02:40 0.70 20:40 1.47 1.14 02:40 0.071 19:00 0.382 0.213 0.213 11/10/2022 04:30 2.31 07:45 4.90 3.77 04:35 0.64 07:40 1.44 1.11 04:35 0.054 07:45 0.356 0.202 0.202 11/11/2022 04:05 2.45 08:35 4.59 3.82 04:15 0.60 17:05 1.46 1.18 04:15 0.056 08:30 0.321 0.219 0.219 11/12/2022 05:00 2.30 11:25 5.54 3.82 03:00 0.68 11:20 1.71 1.14 05:00 0.062 11:20 0.488 0.211 0.211 11/13/2022 04:05 2.25 19:00 5.15 3.88 04:10 0.63 18:55 1.42 1.11 04:10 0.052 19:00 0.361 0.210 0.210 11/14/2022 03:35 2.24 08:00 5.08 3.72 03:55 0.53 08:00 1.44 1.05 03:55 0.045 08:00 0.380 0.189 0.189 11/15/2022 03:00 2.23 20:35 4.67 3.64 03:45 0.59 19:10 1.35 1.04 03:45 0.051 20:35 0.314 0.180 0.180 11/16/2022 03:30 2.32 08:05 5.16 3.76 03:35 0.55 08:20 1.48 1.05 03:35 0.047 08:20 0.395 0.190 0.190 11/17/2022 03:10 2.04 07:40 4.63 3.68 02:55 0.48 13:25 1.33 1.02 02:55 0.036 07:45 0.293 0.181 0.181 11/18/2022 04:20 2.32 07:55 4.67 3.70 04:10 0.62 14:20 1.40 1.12 04:10 0.054 14:20 0.320 0.197 0.197 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 3.182
Average 3.82 1.14 0.212
10 Site02-Kat
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 5.17 2.11 0.653
Minimum 3.04 1.28 0.183
Maximum 7.55 2.95 1.434
Min Time 11/06/2022 4:00:00 AM 11/05/2022 5:05:00 AM 11/06/2022 4:00:00 AM Max Time 11/17/2022 7:25:00 AM 11/08/2022 8:40:00 AM 11/08/2022 8:40:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Round (21 in H)
Silt 0.00 (in)
11 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site02-Kat
Good straight through flow
Not investigated

0.25"

2.28 10'
Brick/Good
VCP/Good

5.00 09/28/22 @ 1:09 AM
Standard Traffic Control with No Safety Concerns
499 W Katella Ave. Anaheim
Not Investigated
Sensor
Location
10'

21.00 x 21.00

21.00 21.00
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
Location
ADS Site
Location
flow
dir.

Anaheim
11/03/22
“
“
SW087311
12 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site02-Kat
13 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site02-Kat
14 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site02-KatPipe: Round (21 in H), Silt0.00 in
DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:10 3.46 08:55 7.19 5.23 04:00 1.31 09:35 2.58 2.03 04:10 0.221 08:55 1.202 0.637 0.637 11/05/2022 05:05 3.12 08:30 6.24 4.96 05:05 1.28 09:40 2.44 2.03 05:05 0.185 09:40 0.926 0.589 0.589 11/06/2022 04:00 3.04 10:35 6.44 4.93 03:55 1.30 08:55 2.66 2.04 04:00 0.183 08:55 1.017 0.590 0.590 11/07/2022 04:00 3.47 09:55 6.86 5.10 03:00 1.49 10:50 2.69 2.12 04:00 0.252 10:05 1.122 0.640 0.640 11/08/2022 03:55 3.33 08:40 7.36 5.43 02:50 1.39 08:40 2.95 2.18 02:50 0.223 08:40 1.434 0.727 0.727 11/09/2022 04:05 3.27 08:30 6.95 5.07 03:40 1.36 09:35 2.70 2.08 03:45 0.212 08:30 1.166 0.627 0.627 11/10/2022 03:30 3.25 08:15 6.74 5.16 03:30 1.39 08:15 2.66 2.14 03:30 0.213 08:15 1.147 0.661 0.661 11/11/2022 03:20 3.40 08:30 7.16 5.35 03:50 1.49 10:20 2.75 2.21 03:20 0.244 10:20 1.193 0.718 0.718 11/12/2022 04:25 3.39 08:50 6.82 5.18 03:40 1.45 08:05 2.58 2.13 04:25 0.239 08:50 1.110 0.658 0.658 11/13/2022 04:20 3.11 08:00 6.93 5.11 04:20 1.34 10:10 2.53 2.10 04:20 0.193 08:00 1.073 0.640 0.640 11/14/2022 04:30 3.36 07:45 6.83 5.11 04:20 1.46 07:35 2.68 2.09 04:30 0.237 07:35 1.154 0.635 0.635 11/15/2022 04:20 3.19 08:55 7.05 5.10 04:15 1.37 08:55 2.60 2.07 04:20 0.205 08:55 1.192 0.626 0.626 11/16/2022 04:25 3.26 08:35 7.21 5.22 04:20 1.43 08:35 2.64 2.14 04:20 0.220 08:35 1.245 0.670 0.670 11/17/2022 04:10 3.55 07:25 7.55 5.28 04:10 1.52 09:55 2.69 2.15 04:10 0.264 10:00 1.170 0.681 0.681 11/18/2022 04:05 3.35 07:10 7.12 5.33 03:45 1.44 10:00 2.69 2.16 04:05 0.232 09:55 1.224 0.699 0.698 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 9.797
Average 5.17 2.11 0.653
15 Site03-KatN
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 7.09 2.38 1.113
Minimum 4.18 1.60 0.365
Maximum 10.92 2.92 2.333
Min Time 11/18/2022 5:15:00 AM 11/13/2022 4:40:00 AM 11/09/2022 3:50:00 AM Max Time 11/08/2022 9:00:00 AM 11/08/2022 8:00:00 AM 11/08/2022 8:50:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Elliptical (21 in H x 20.75 in W)
Silt 0.00 (in)
16 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site03-KatN
Good straight through flow
Not investigated

0.25"

2.38 11'-2"
Precast/Good
VCP/Good

6.63 09/28/22 @ 1:24 AM
Standard Traffic Control with No Safety Concerns
800 W Katella Ave. Anaheim
Not Investigated
Sensor
Location
11'-2"

21.00 x 20.75

21.00 20.75
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
Location
ADS Site
Location
flow
dir.

Anaheim
11/03/22
“
“
SW076311
17 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site03-KatN
18 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site03-KatN
19 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site03-KatNPipe: Elliptical (21 in H x 20.75 in W), Silt0.00 in DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:40 4.24 08:40 8.37 7.03 04:15 1.61 13:10 2.76 2.36 04:15 0.384 07:40 1.548 1.095 1.095 11/05/2022 04:15 4.58 17:05 8.32 7.04 04:05 1.65 17:10 2.77 2.35 04:05 0.415 17:10 1.550 1.092 1.092 11/06/2022 04:20 4.37 17:20 8.72 7.17 03:40 1.61 10:30 2.80 2.37 03:40 0.377 10:20 1.543 1.131 1.131 11/07/2022 04:10 4.79 08:15 8.63 6.93 03:55 1.79 08:40 2.91 2.37 03:15 0.482 08:15 1.562 1.066 1.066 11/08/2022 03:10 4.45 09:00 10.92 7.43 03:10 1.65 08:00 2.92 2.41 03:10 0.391 08:50 2.333 1.211 1.211 11/09/2022 04:10 4.25 07:50 9.06 6.93 03:50 1.60 19:00 2.64 2.33 03:50 0.365 07:55 1.649 1.059 1.059 11/10/2022 04:40 4.45 14:35 9.00 7.07 04:30 1.73 20:40 2.68 2.34 04:30 0.416 14:35 1.651 1.089 1.089 11/11/2022 04:40 4.48 10:20 9.06 7.19 04:35 1.70 16:40 2.85 2.38 04:35 0.418 10:20 1.720 1.136 1.136 11/12/2022 04:10 4.50 18:15 8.36 7.21 04:05 1.74 16:25 2.69 2.37 04:10 0.424 18:15 1.448 1.130 1.130 11/13/2022 04:15 4.44 13:55 8.40 7.15 04:40 1.60 16:00 2.77 2.34 04:40 0.382 16:00 1.556 1.109 1.109 11/14/2022 04:35 4.50 08:00 8.76 7.02 04:00 1.68 11:30 2.71 2.36 04:15 0.429 08:10 1.544 1.087 1.087 11/15/2022 04:35 4.70 08:40 8.91 7.13 02:30 1.85 15:40 2.81 2.42 04:35 0.506 08:40 1.705 1.131 1.131 11/16/2022 04:10 4.72 08:30 9.06 7.03 02:10 1.86 17:05 2.80 2.40 04:10 0.513 08:15 1.716 1.102 1.102 11/17/2022 04:00 4.67 16:05 8.52 7.16 04:10 1.84 18:35 2.80 2.46 04:10 0.480 17:35 1.600 1.160 1.160 11/18/2022 05:15 4.18 17:25 8.23 6.92 04:30 1.78 17:05 2.80 2.42 05:15 0.399 17:25 1.508 1.090 1.089 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 16.688
Average 7.09 2.38 1.113
20 Site03-KatS
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 7.99 1.87 1.149
Minimum 4.48 1.18 0.317
Maximum 11.55 2.49 2.404
Min Time 11/06/2022 4:20:00 AM 11/16/2022 4:20:00 AM 11/06/2022 4:10:00 AM Max Time 11/08/2022 8:40:00 AM 11/08/2022 8:40:00 AM 11/08/2022 8:40:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Round (24 in H)
Silt 0.00 (in)
21 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site03-KatS
Good straight through flow
Not investigated

0.25"

1.71 10'
Precast/Good
VCP/Good

5.38 09/28/22 @ 1:26 AM
Standard Traffic Control with No Safety Concerns
800 W Katella Ave. Anaheim
Not Investigated
Sensor
Location
10'

24.00 x 24.00

24.00 24.00
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
Location
ADS Site
Location
flow
dir.

Anaheim
11/03/22
“
“
SW076306
22 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site03-KatS
23 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site03-KatS
24 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site03-KatSPipe: Round (24 in H), Silt0.00 in
DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:25 4.68 08:10 10.15 7.82 03:05 1.29 08:20 2.28 1.89 04:25 0.361 08:15 1.830 1.128 1.128 11/05/2022 05:30 4.79 08:30 10.05 7.87 05:25 1.26 08:35 2.24 1.86 05:35 0.367 08:35 1.803 1.117 1.117 11/06/2022 04:20 4.48 08:10 10.36 7.78 04:10 1.18 10:10 2.28 1.86 04:10 0.317 08:15 1.841 1.105 1.105 11/07/2022 04:15 4.94 07:00 9.98 7.74 04:15 1.35 07:00 2.31 1.86 04:15 0.407 07:00 1.846 1.085 1.085 11/08/2022 03:10 4.88 08:40 11.55 8.26 03:05 1.31 08:40 2.49 1.93 03:05 0.388 08:40 2.404 1.246 1.246 11/09/2022 04:20 4.83 07:50 10.44 7.94 04:00 1.29 07:40 2.30 1.84 04:00 0.379 07:55 1.940 1.120 1.120 11/10/2022 03:50 5.01 07:40 10.95 8.10 04:15 1.27 07:45 2.31 1.89 03:45 0.399 07:45 2.074 1.188 1.188 11/11/2022 03:20 5.10 07:35 11.23 8.27 04:10 1.35 08:50 2.39 1.95 04:10 0.430 07:35 2.220 1.261 1.261 11/12/2022 04:45 4.98 08:25 10.76 8.11 04:00 1.27 09:40 2.28 1.87 04:00 0.391 08:25 2.003 1.170 1.170 11/13/2022 04:40 4.80 08:10 10.50 8.05 04:40 1.24 10:00 2.26 1.85 04:40 0.359 08:15 1.843 1.141 1.141 11/14/2022 04:50 4.95 07:55 10.54 7.85 04:25 1.22 08:55 2.28 1.79 04:25 0.375 07:55 1.866 1.077 1.077 11/15/2022 04:40 4.66 07:40 10.49 7.92 04:40 1.25 07:25 2.22 1.81 04:40 0.346 07:25 1.877 1.098 1.098 11/16/2022 04:40 4.71 08:05 10.50 7.91 04:20 1.18 08:50 2.29 1.86 04:25 0.338 08:05 1.909 1.125 1.125 11/17/2022 04:30 5.08 07:35 10.85 8.07 04:25 1.39 09:05 2.31 1.90 04:25 0.440 07:35 2.057 1.177 1.177 11/18/2022 04:35 4.90 07:40 10.95 8.22 04:20 1.24 11:00 2.34 1.88 04:20 0.374 07:30 2.026 1.202 1.201 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 17.238
Average 7.99 1.87 1.149
25 Site04-KatN
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 9.84 2.95 2.520
Minimum 5.70 2.29 0.924
Maximum 13.98 3.84 5.029
Min Time 11/04/2022 4:35:00 AM 11/06/2022 5:10:00 AM 11/04/2022 4:40:00 AM Max Time 11/08/2022 9:00:00 AM 11/08/2022 8:50:00 AM 11/08/2022 8:55:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Elliptical (27.75 in H x 27 in W)
Silt 0.00 (in)
26 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site04-KatN
Good straight through flow
Not investigated

0.25"

3.04 12'
Precast/Good
VCP/Good

9.75 09/28/22 @ 1:43 AM
Standard Traffic Control with No Safety Concerns
1309 W Katella Ave. Anaheim
Not Investigated
Sensor
Location
12'

27.75 x 27.00

27.75 27.00
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
ADS Site Location
Location
flow
dir.

Anaheim
11/03/22
“
“
OT066329
27 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site04-KatN
28 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site04-KatN
29 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site04-KatNPipe: Elliptical (27.75 in H x 27 in W), Silt0.00 in DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:35 5.70 20:20 11.06 9.54 04:40 2.32 21:00 3.24 2.92 04:40 0.924 21:00 3.127 2.403 2.403 11/05/2022 04:35 5.98 21:50 11.71 9.71 02:55 2.43 22:05 3.24 2.93 04:30 1.025 21:55 3.420 2.458 2.458 11/06/2022 05:05 5.82 17:00 11.69 9.64 05:10 2.29 19:15 3.25 2.93 04:20 0.967 17:00 3.438 2.451 2.451 11/07/2022 03:20 6.75 17:00 11.37 9.63 04:15 2.44 17:10 3.23 2.95 04:15 1.216 16:55 3.290 2.447 2.447 11/08/2022 03:05 6.65 09:00 13.98 10.49 02:15 2.45 08:50 3.84 3.00 02:15 1.249 08:55 5.029 2.788 2.788 11/09/2022 04:35 6.78 14:40 11.03 9.78 04:45 2.52 22:05 3.25 2.96 04:45 1.265 22:05 3.065 2.486 2.486 11/10/2022 04:55 6.94 16:55 11.27 9.79 03:40 2.47 22:25 3.22 2.94 04:30 1.308 16:50 3.158 2.482 2.482 11/11/2022 05:30 5.81 17:20 11.91 9.95 04:35 2.36 18:35 3.26 2.97 05:35 0.994 18:05 3.471 2.582 2.582 11/12/2022 04:40 5.92 20:45 11.91 9.93 04:30 2.48 14:50 3.25 2.96 04:40 1.037 20:45 3.495 2.557 2.557 11/13/2022 05:00 6.68 17:15 11.54 9.91 05:40 2.46 21:20 3.26 2.95 05:40 1.256 14:05 3.330 2.543 2.543 11/14/2022 04:50 6.24 17:30 11.18 9.75 04:20 2.45 22:55 3.24 2.95 04:55 1.102 18:45 3.133 2.486 2.486 11/15/2022 05:10 6.61 21:20 12.05 9.93 05:15 2.50 19:10 3.26 2.96 03:40 1.227 21:20 3.546 2.553 2.553 11/16/2022 05:10 6.45 08:50 11.14 9.75 05:15 2.43 16:10 3.25 2.96 05:15 1.181 08:50 3.157 2.496 2.496 11/17/2022 04:40 5.96 17:10 11.84 9.96 04:15 2.33 14:30 3.25 2.96 04:35 1.003 17:15 3.464 2.571 2.571 11/18/2022 05:30 5.93 21:20 11.56 9.77 05:20 2.42 23:15 3.26 2.95 05:25 1.041 21:25 3.384 2.496 2.495 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 37.797
Average 9.84 2.95 2.520
30 Site04-KatS
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 6.23 2.58 1.107
Minimum 3.60 1.78 0.341
Maximum 9.07 3.10 2.162
Min Time 11/06/2022 4:40:00 AM 11/06/2022 4:40:00 AM 11/06/2022 4:40:00 AM Max Time 11/08/2022 8:50:00 AM 11/08/2022 9:00:00 AM 11/08/2022 8:50:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Round (24 in H)
Silt 0.00 (in)
31 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site04-KatS
Good straight through flow
Not investigated

0.25"

2.64 12'-4"
Brick/Good
VCP/Good

6.00 09/28/22 @ 1:47 AM
Standard Traffic Control with No Safety Concerns
1309 W Katella Ave. Anaheim
Not Investigated
Sensor
Location
12'-4"

24.00 x 24.00

24.00 24.00
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
ADS Site Location
Location
flow
dir.

Anaheim
11/03/22
“
“
SW066327
32 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site04-KatS
33 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site04-KatS
34 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site04-KatSPipe: Round (24 in H), Silt0.00 in
DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:40 3.95 09:25 7.82 6.27 04:20 1.86 08:00 2.91 2.58 04:40 0.407 09:25 1.640 1.118 1.118 11/05/2022 05:25 4.01 08:35 7.78 6.20 05:25 1.89 11:55 2.89 2.59 05:25 0.422 08:35 1.629 1.101 1.101 11/06/2022 04:40 3.60 08:20 7.90 6.09 04:40 1.78 08:00 2.91 2.56 04:40 0.341 08:00 1.651 1.070 1.070 11/07/2022 04:20 4.10 07:10 7.62 6.07 03:35 1.94 12:55 2.83 2.57 04:20 0.455 07:10 1.523 1.055 1.055 11/08/2022 04:25 4.17 08:50 9.07 6.50 04:20 1.96 09:00 3.10 2.60 04:20 0.463 08:50 2.162 1.183 1.183 11/09/2022 04:30 4.12 08:10 7.88 6.22 04:35 1.90 07:45 2.93 2.59 04:35 0.443 07:45 1.642 1.108 1.108 11/10/2022 04:05 4.07 08:00 8.43 6.39 04:05 1.89 09:40 2.92 2.62 04:05 0.430 08:30 1.798 1.165 1.165 11/11/2022 03:55 4.14 07:45 8.76 6.44 04:20 1.97 22:55 2.92 2.62 04:20 0.462 07:35 1.893 1.183 1.183 11/12/2022 04:20 4.04 08:05 8.50 6.31 04:10 1.92 07:20 2.91 2.61 04:20 0.434 08:20 1.853 1.142 1.142 11/13/2022 05:00 3.83 08:20 8.17 6.20 04:55 1.85 10:20 2.91 2.58 05:00 0.388 08:55 1.712 1.103 1.103 11/14/2022 05:05 3.97 08:10 8.22 5.95 03:35 1.87 07:50 2.93 2.52 04:55 0.414 07:50 1.745 1.016 1.016 11/15/2022 05:00 3.68 07:50 8.10 5.99 04:45 1.83 08:50 2.84 2.52 05:00 0.364 07:35 1.657 1.025 1.025 11/16/2022 04:55 3.76 08:10 8.05 6.09 04:50 1.82 10:00 2.87 2.54 04:50 0.371 08:15 1.631 1.060 1.060 11/17/2022 04:50 4.13 07:50 8.45 6.32 04:45 1.94 09:00 2.87 2.56 04:45 0.458 07:55 1.782 1.118 1.118 11/18/2022 04:55 4.07 07:40 8.59 6.41 04:50 1.93 10:15 2.91 2.57 04:50 0.441 07:55 1.869 1.152 1.151 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 16.597
Average 6.23 2.58 1.107
35 Site05-Wal
Site Commentary

SITE INFORMATION

This site functioned under normal conditions during the study period. No surcharge conditions were experienced at this location.

Observed Flow Conditions
Item DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total
MG)
Average 8.03 1.81 1.199
Minimum 4.96 1.35 0.451
Maximum 11.35 2.18 2.160
Min Time 11/11/2022 5:30:00 AM 11/04/2022 4:30:00 AM 11/04/2022 4:35:00 AM Max Time 11/08/2022 9:00:00 AM 11/07/2022 4:25:00 PM 11/08/2022 9:15:00 AM Based upon the quality and consistency of the observed flow depth and velocity data, the Continuity equation was used to calculate flow rate and quantities during the monitoring period.

Values in the Observed Flow Conditions and data on the graphical reports are based on the five minutes average.

DATA UPTIME
Data uptime observed during Friday, 04 November 2022 to Friday, 18 November 2022 is provided in the following table:

Percent Uptime
DFINAL (in) 100
VFINAL (ft/s) 100
QFINAL (MGD - Total MG) 100
Pipe Round (27.5 in H)
Silt 0.00 (in)
36 ADS Site Report
Project Name: FM Initials:

Site Name:

City:

Access: Type of
System:

Sanitary
Investigation Information:

Manhole Depth:

Manhole Material /
Pipe Material / Condition:

Commercial
Oxygen:

Safety Notes:

Date/Time of Investigation:

Site Hydraulics:

Upstream Input: (L/S, P/S)
Upstream Manhole:

Downstream Manhole:

Depth of Flow:

Range (Air DOF):

Peak Velocity:

Silt: Inches
fps
+/-
+/-
Cross Section
Installation Information
Installation Type: Standard
Sensors Devices: Ultrasonic/Velocity/Pressure
Surcharge Height:

Rain Gauge Zone:

Yes No ? Distance
Trunk
Lift / Pump Station
WWTP
Other
Monitor Type
Pipe Height:

Pipe Width:

Data Acquisition
Manhole ID
Quality Form
Address/Location:

VM
Drive
Storm Combined
X
Manhole Information: Investigation Information:

Condition
Land Use:

Residential Industrial Other
N N
Other Information:

Additional Site Information / Comments:
x
x
x
x
Monitor Model
x
Install Date:

Agency:

Triton +
Peak Doppler
0 Backup
Disney.Psomas.TFM.CA22 Anaheim
Site05-Wal
Good straight through flow
Not investigated

0.25"

1.68 9'-3"
Precast/Good
VCP/Good

5.63 09/28/22 @ 2:01 AM
Standard Traffic Control with No Safety Concerns/ Dry line coming from the West. 1202 Holgate Dr. Anaheim
Not Investigated
Sensor
Location
9'-3"

27.50 x 27.50

27.50 27.50
--
0 Plan N

20.9 H2S: 0 LEL: 0 CO: 0
2 man crew required and one blower is to be
operated at all times.

Manual/Wireless Collect
"
ADS Site
Location
ADS Site
Location
flow
dir.

Anaheim
11/03/22
“
“
OT066321
37 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Hydrograph Report
Site05-Wal
38 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Scattergraph Report
Site05-Wal
39 15201 Springdale St. Huntington Beach,
CA 92649
800-633-7246
www.adsenv.com
Daily Tabular Report
11/04/2022 00:00 - 11/18/2022 23:59
Site05-WalPipe: Round (27.5 in H), Silt0.00 in
DFINAL (in) VFINAL (ft/s) QFINAL (MGD - Total MG)
Date Time Min Time Max Avg Time Min Time Max Avg Time Min Time Max Avg Total 11/04/2022 04:35 5.00 18:35 9.42 7.73 04:30 1.35 16:50 2.00 1.76 04:35 0.451 16:50 1.614 1.108 1.108 11/05/2022 05:40 5.16 17:25 9.74 7.91 04:25 1.42 23:15 2.03 1.80 05:35 0.515 17:00 1.665 1.168 1.168 11/06/2022 05:40 5.06 16:55 9.64 7.79 02:05 1.42 16:40 2.00 1.77 02:05 0.483 17:05 1.644 1.134 1.134 11/07/2022 03:10 5.40 16:55 10.36 7.93 03:10 1.47 16:25 2.18 1.80 03:10 0.542 17:00 1.984 1.168 1.168 11/08/2022 03:00 5.45 09:00 11.35 8.75 02:20 1.48 09:20 2.17 1.85 03:00 0.565 09:15 2.160 1.381 1.381 11/09/2022 05:25 6.16 17:00 9.55 8.19 03:40 1.54 17:00 2.08 1.85 03:40 0.735 17:00 1.707 1.242 1.242 11/10/2022 02:10 6.08 16:55 9.74 8.06 01:35 1.60 16:45 2.07 1.84 02:10 0.702 16:45 1.719 1.210 1.210 11/11/2022 05:30 4.96 16:55 10.21 8.15 05:35 1.40 15:40 2.10 1.82 05:35 0.461 17:00 1.859 1.247 1.247 11/12/2022 05:35 5.05 17:15 9.96 7.94 05:50 1.44 16:50 2.03 1.79 05:50 0.489 17:15 1.750 1.174 1.174 11/13/2022 05:55 5.39 14:15 9.82 8.10 05:50 1.49 13:45 2.08 1.82 05:50 0.551 13:45 1.747 1.215 1.215 11/14/2022 03:40 5.38 18:45 9.61 7.85 02:45 1.41 20:15 2.08 1.80 03:50 0.548 18:40 1.671 1.156 1.156 11/15/2022 04:20 5.35 14:20 9.44 7.97 05:50 1.45 19:00 2.05 1.80 05:50 0.536 17:50 1.623 1.183 1.183 11/16/2022 05:00 5.13 20:15 9.49 7.94 04:55 1.43 20:50 2.12 1.81 05:00 0.502 20:50 1.709 1.182 1.182 11/17/2022 04:35 5.02 17:05 10.07 8.12 04:30 1.38 16:50 2.11 1.82 04:30 0.461 16:50 1.862 1.236 1.236 11/18/2022 05:40 5.41 19:20 9.68 7.97 03:10 1.40 20:40 2.08 1.80 05:30 0.533 19:20 1.733 1.183 1.183 11/04/2022 00:00 - 11/18/2022 23:59
DFINAL
(in)
VFINAL
(ft/s)
QFINAL
(MGD -
Total MG)
Total 17.986
Average 8.03 1.81 1.199
40 APPENDIX E
SEWER STUDY MODEL OUTPUT:

EXISTING CONDITION

PROJECT ANALYSIS

IMPROVMENT ANALYSIS

EXISTING CONDITION MODEL OUTPUT
Flow (mgd)
d/D
Ratio Flow (mgd) d/D Ratio
Machester SW076416-SW075417 18 354.6 0.50 0.285 0.50 0.285 SW075417-SW076418 18 167.1 0.72 0.281 0.72 0.281
SW076418-SW076419 18 297.0 0.72 0.386 0.72 0.386
SW076419-SW076420 18 276.2 0.72 0.383 0.72 0.383
SW076420-SW076421 18 226.3 0.72 0.388 0.72 0.388
SW076421-SW076422 18 227.8 0.72 0.385 0.72 0.385
SW076422-SW076423 18 269.8 0.72 0.386 0.72 0.386
SW076423-SW076224 18 266.7 0.72 0.424 0.72 0.424
Disney Way SW076224-SW076425 18 312.0 0.72 0.363 0.72 0.363 SW076425-SW076402 18 188.8 0.72 0.351 0.72 0.351
SW076402-SW076403 18 238.1 0.72 0.348 0.72 0.348
SW076403-SW076404 18 235.9 0.72 0.345 0.72 0.345
Katella Ave SW076404-SW076432 18 235.2 0.72 0.310 0.72 0.310 DLD SW065410-SW065404 18 72.7 1.46 0.423 1.46 0.423
SW065404-SW065408 18 308.9 1.46 0.515 1.46 0.515
SW065408-SW065402 18 296.8 1.46 0.516 1.46 0.516
SW065402-SW065401 18 306.5 1.46 0.516 1.46 0.516
Walnut SW065401-SW065405 18 308.8 1.46 0.552 1.46 0.552 Magic Way SW065405-OT065334 24 174.5 1.92 0.434 1.92 0.434 OT065334-OT065317 24 560.0 1.92 0.444 1.92 0.444
Cerritos Ave 131 24 39.7 1.92 0.401 1.92 0.401
OT065317-OT066203 27 598.8 1.93 0.374 1.93 0.374
OT066203-OT066206 27 592.6 2.36 0.417 2.36 0.417
OT066206-OT066312 27 594.8 2.36 0.417 2.36 0.417
OT066312-OT066321 27 514.1 2.36 0.417 2.36 0.417
Katella Ave OT066321-OT066331 27 340.7 2.36 0.417 2.36 0.417 Harbor Blvd SW076432-SW076431 21 41.3 1.91 0.504 0.72 0.296 SW076431-SW076430 21 23.1 1.91 0.206 0.72 0.128
SW076430-SW076429 21 267.3 1.91 0.503 0.72 0.295
SW076429-SW076428 21 264.7 2.01 0.519 0.81 0.314
SW076428-SW076427 21 39.3 2.01 0.280 0.81 0.178
SW076427-SW076417 21 448.9 2.02 0.521 0.82 0.317
SW076417-SW076312 21 384.2 2.02 0.521 0.82 0.317
DCA SW076312-SW076311 21 374.4 2.61 0.611 1.46 0.432
SW076311-SW076310 21 252.8 2.61 0.611 1.46 0.432
SW076310-SW076309 21 249.0 2.61 0.611 1.46 0.432
SW076309-SW066430 21 260.6 2.61 0.611 1.46 0.432
Disneyland Dr SW066430-SW066424 24 44.1 3.13 0.545 1.98 0.419 SW066424-SW066428 24 19.3 2.81 0.515 1.86 0.407
SW066428-SW066427 24 265.2 2.81 0.512 1.86 0.405
SW066427-SW066423 24 331.9 2.81 0.512 1.86 0.405
SW066423-SW066426 24 314.1 2.81 0.512 1.86 0.405
SW066426-SW066332 24 340.4 2.81 0.512 1.86 0.405
SW066332-OT066331 24 25.0 2.91 0.523 1.97 0.418
Walnut OT066331-OT066329 27 660.7 4.85 0.591 3.93 0.519 Cross Street ID
Diameter
(in)
With Harbor Diversion
H
A
R
B
O
R
W
E
S
T
Length (ft)
No Harbor Diversion
Street
M
A
G
I
C
W
A
Y
W
A
L
N
U
T
W
E
S
T
K
A
T
E
L
L
A
A
V
E
N
O
R
T
H

Page 1 of 23 ends

Anaheim City CouncilApril 16, 2024

Anaheim City Council
April 16, 2024