Agenda packet — Monterey City Council, February 7, 2023 (part 4 of 9)

2. This corresponds to particulate loading rate provided in TELR.

3. Non-green infrastructure treatment control includes devices that utilize detention, hydrodynamic separation, or filtration for treatment (without vegetation).

4. Green infrastructure are treatment control measures such as bioretention, rain gardens, planter boxes, or other vegetated facilities; infiltration-based facilities; and rainwater harvest and use measures.

5. This includes improvements or enhancements to public use areas or public education projects or added project features.

All project scores were documented in a project database (see Appendix E), which sorts projects based on their score. Narrative descriptions of community benefits claimed by each applicable project are also provided in Appendix E. Preliminary project lists were developed for cooperating entities, interested parties, and stakeholders for input on ranking and prioritization. Results of the identification, metrics-based multi-benefit analysis, and project prioritization are provided in Section 6. The method for selecting the top seven projects for development of concept designs, along with descriptions of those projects, is also provided in Section 6.

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6. IDENTIFICATION AND PRIORITIZATION OF PROJECTS
This section presents the results of the project identification, analysis, prioritization, and selection process. The process included the following steps:

1. Identify project opportunities and perform a metrics-based evaluation to obtain a preliminary project “score.”

2. Send project opportunities and preliminary scores to project opportunity location organizations to perform project prioritization and rank projects. Following prioritization by identified organizations, compile revised master project database, incorporating rankings from organizations performing prioritization.

3. Send revised master project database with project rankings to Monterey Peninsula Stakeholder Group to obtain feedback. Document stakeholder feedback in or accompanying master project database, Appendix E, and send to the TAC for selection of the top seven projects for preparation of 10% project concept design.

4. Finalize selection of seven projects for concept designs. Select one of the seven projects for preparation of a 30% design and CEQA Checklist.

These steps are described in further detail in the subsequent sections.

6.1 Identified Projects

6.1.1 Project Opportunities Identified in Existing Plans Planned projects received from the cooperating entities, interested parties, and stakeholders were in various planning stages, ranging from a preliminary idea to the design stage, and consisted of a variety of project types. A total of 84 planned projects were received from 17 entities. Planned projects were processed to account for duplicates and overlapping projects.

6.1.2 Additional Potential Project Opportunities and Feasibility Analysis Stormwater capture projects located on publicly- and privately-owned parcels that could provide water supply augmentation were identified through the Monterey Peninsula Water Recovery Study. A total of 241 Water Recovery Study projects were identified (this includes some of the planned projects provided by project proponents).

In addition to those projects identified through the Water Recovery Study, the desktop geospatial opportunity analysis described in Section 5 identified a total of 377 parcel-based, 61 regional, and 1,609 ROW projects in the Monterey Peninsula region.

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6.1.3 List of Potential Project Opportunities
The Final Project Database is provided in Appendix E. All projects identified would detain (i.e., provide “peak shaving” of the urban hydrograph) or retain (through infiltration or capture and reuse) urban stormwater and dry weather flows that drain towards the Pacific Ocean, thereby partially restoring natural drainage patterns. Approximately 26 projects help to re-establish natural water drainage systems or develop, restore, or enhance habitat and open space by specifically including stream restoration, hydromodification control, or habitat restoration. Approximately 2,205 projects (97% of the total number of projects) are associated with publicly owned lands to capture, clean, store, or use stormwater and dry weather runoff. No new or redevelopment projects were identified as part of this plan, although these projects could be amended to the SWRP in the future. MRSWMP has a Stormwater Technical Guide for Low Impact Development (MRSWMP, 2015) that provides additional resources for new or redevelopment projects that must implement LID measures per the CCRWQCB PCRs. This Stormwater Technical Guide provides design criteria and types of BMPs to be used for such projects (MRSWMP, 2015).

6.2 Results of Integrated Metrics-Based Multi-Benefit Analysis and Prioritized List of Potential Projects
Following completion of the metrics-based multi-benefit evaluation, as detailed in Section 5.4, the projects were compiled into one master database (in Excel format) as well as agency-specific databases. The master and agency-specific databases included information about the project location and scoring, along with the final ‘scores’ resulting from the metrics-based multi-benefit evaluation. These agency-specific databases were sent to the following entities for prioritization:

Table 11: Agencies Performing Project Prioritization
Cooperating Entities Other Agencies
City of Monterey Monterey Peninsula Airport District
City of Seaside Carmel Area Wastewater District
City of Sand City Fort Ord Reuse Authority
City of Carmel-By-The-Sea Monterey Peninsula Regional Park District City of Pacific Grove California State University Monterey Bay (state/federal) City of Del Rey Oaks State of CA Department of Parks and Recreation (state/federal) County of Monterey United States Army Garrison / Presidio of Monterey All cooperating entities, including those listed in Table 11 as well as Monterey One Water and the Monterey Peninsula Water Management District, also received the full compiled preliminary project database. The full compiled project database is included as a tab in the Final Project Database, provided as Appendix E.

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The agencies were asked to consider multiple criteria when ranking their projects, such as cost considerations, opportunity considerations, labor/staff considerations, multiple benefit assessments, safety and security considerations, and implementation considerations. Entities were requested to provide their project ranking along with the reasoning for the ranking. Rankings provided by each of the organizations performing prioritization were compiled into a Stakeholder Project Database with the full compiled preliminary project database. The prioritization feedback received from each agency is also provided in the Final Project Database included as Appendix E.

The Stakeholder Project Database also contained a tab of top ranked projects, which included the top-ranked 2% (rounding up) of projects from all the agencies. For agencies that did not provide prioritization feedback, only the preliminary project scores were considered. A total of 53 projects were identified for inclusion in the top ranked projects. The Stakeholder Project Database was provided to the Monterey Peninsula Stakeholder Group on February 6, 2018 and discussed at the Stakeholder Group meeting on February 8, 2018, with an emphasis on receiving input from the stakeholders on selecting projects for concept design. The top ranked projects tab provided to the Stakeholder Group is included in the Final Project Database included as Appendix E.

6.3 Selected Project Concept Designs and Quantitative Analysis of Project Benefits The TAC selected seven projects for concept design during the third TAC meeting, held on February 22, 2018, by considering the preliminary project scores, the agency rankings, input from the Monterey Peninsula Stakeholder Group, and other local and institutional knowledge. Based on Stakeholder Group and TAC input and comments, the primary factor in project selection was to capture as much usable water as possible to help meet dry weather recycled water demands and augment water supply at other time with prior authorization from Monterey One Water. The project selection for 10% concept and 30% design was finalized through email communication with the TAC over the four weeks following the meeting.

The seven selected projects for concept design are briefly described below and are also included in the “Selected Projects” tab of the Final Project Database, provided as Appendix E. The descriptions below include how each project or program will contribute to the preservation, restoration, or enhancement of watershed processes. Concept designs and additional information about each project, including multi-benefit descriptions, are provided in Appendix F. The top project selected, Hartnell Gulch, was also developed into a 30% design and a preliminary CEQA checklist was completed for it. Hartnell Gulch project description, including multi-benefit descriptions, concept designs and preliminary CEQA checklist are provided as Appendix G.

Coastal areas of Monterey are areas of high sensitivity for archaeological, cultural, historical, and Native American resources and the projects will evaluate these resources in future phases of project development.

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6.3.1 Hartnell Gulch Restoration and Runoff Diversion
The Hartnell Gulch Restoration and Runoff Diversion project, a proposed diversion to sanitary sewer and creek restoration project, is in the City of Monterey. The project would install a pump to divert underground seepage and dry weather flows into the sanitary sewer. The restoration component would consist of removal of invasive plants, revegetation with native plants, and stabilization of the existing eroded channel. A portion of the approximately 1,100-acre tributary drainage area is in a DAC tract. The project is estimated to achieve between 20 to 100 ac-ft/yr of water supply. Project concept design and preliminary CEQA checklist is provided in Appendix G.

This project was also developed into a 30% design, which is provided in Appendix G. The project claims the community benefit “Provides Enhancement to DAC”, as the project is located in a DAC.

6.3.2 Lake El Estero Diversion to Sanitary Sewer
The Lake El Estero Diversion to Sanitary Sewer project is in the City of Monterey. This is a lake project that would augment water supply via a diversion to sanitary sewer and remove urban stormwater and dry weather flows that are currently discharged to Monterey Bay, thereby partially restoring natural drainage patterns and treating any urban pollutants that are associated with the diverted flows. The project would install a diversion valve from the box culvert on the north side of the lake to divert flows into the sanitary sewer system, instead of discharging into Monterey Bay. The project is estimated to achieve over 100 ac-ft/yr of water supply from the approximately 3,670-acre tributary drainage area. The project does not claim a direct environmental or community benefit, but will provide ancillary benefits to the community as it provides a source of alternative water supply.

6.3.3 Monterey Tunnel Stormwater Diversion
The Monterey Tunnel Stormwater Diversion project is in the City of Monterey. The project would divert flows from the downtown Tunnel and Oliver Street storm drain gravity pipe to the sanitary sewer instead of discharging it into Monterey Bay. This would remove dry weather flows that are currently discharged to Monterey Bay, thereby partially restoring natural drainage patterns and treating any urban pollutants that are associated with the diverted flows. The project is estimated to achieve from 10 to 20 ac-ft/yr of water supply from the approximately 150-acre tributary drainage area. The project does not claim a direct environmental or community benefit, but will provide ancillary benefits to the community as it provides a source of alternative water supply.

6.3.4 Carmel-by-the-Sea Stormwater Diversion
Located in the City of Carmel-by-the-Sea, the Stormwater Diversion project would divert dry weather runoff and wet weather first flush flows from the inland storm drain network to the sanitary sewer along San Antonio Avenue for treatment and reuse for golf course irrigation. This would remove urban stormwater and dry weather flows that are currently discharged to the Carmel Bay Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 553, Packet Page 653 Final Monterey Peninsula SWRP 50 07.30.2019
ASBS region, thereby partially restoring natural drainage patterns (providing some environmental benefit) and treating any urban pollutants that are associated with the diverted flows. The project is estimated to achieve between 10 to 20 ac-ft/yr of water supply from its approximately 310-acre tributary drainage area. The project does not claim a direct community benefit, but will provide ancillary benefits to the community as it provides a source of alternative water supply.

6.3.5 Pacific Grove-Monterey ASBS Watershed – David Avenue Stormwater Storage and Diversion
The Pacific Grove-Monterey ASBS Watershed – David Avenue Stormwater Storage and Diversion project is in the City of Pacific Grove. This project would store wet weather and dry weather flows for diversion to the Pacific Grove storm drain network instead of discharging runoff into Monterey Bay and the Pacific Grove ASBS region, thereby partially restoring natural drainage patterns in this tributary area and treating any urban pollutants that are associated with the diverted flows. This project is estimated to achieve from 10 to 20 ac-ft/yr of water supply from its approximately 100-acre tributary drainage area. The project does not claim a direct environmental or community benefit, but will provide ancillary benefits to the community as it provides a source of alternative water supply.

6.3.6 Del Monte Manor Park Infiltration
The Del Monte Manor Park Infiltration Project in the City of Seaside is a regional infiltration project. The project includes open space park improvements and flood management to infiltrate runoff from the surrounding ROW. This would remove urban stormwater and dry weather flows that are currently discharged to the Pacific Ocean through infiltration, thereby partially restoring natural drainage patterns, providing an environmental benefit, and removing any urban pollutants that are associated with the infiltrated flows. The project will provide indirect benefits of infiltrating 5 to 10 ac-ft/yr of urban runoff above a potable water supply aquifer from its approximately 25-acre tributary drainage area that contains a DAC. The project claims the community benefits “Provides Community Enhancement”, as it includes open space park improvements, along with “Provides Enhancement to DAC”, as the project is located in a DAC.

6.3.7 Drywell Aquifer Recharge Program
The Drywell Aquifer Recharge Program in the City of Seaside, with support from regional partners, would focus on using drywells to recharge urban runoff to a primary water supply aquifer.

The program would recommend potential locations where flows could be diverted from surface ditches or within the storm drain network to a water quality pretreatment system that will discharge to a drywell above the domestic supply aquifers in the Seaside Groundwater Basin. This would remove urban stormwater and dry weather flows that are currently discharged to the Pacific Ocean through infiltration, thereby partially restoring natural drainage patterns and removing any urban pollutants that are associated with the infiltrated flows. The project is estimated to achieve between Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 554, Packet Page 654 Final Monterey Peninsula SWRP 51 07.30.2019
20 to 100 ac-ft/yr of water supply. The project claims the community benefit “Provides Enhancement to DAC” as the project is located in a DAC.

6.4 Development of Project Concept Designs
Project concept designs include the following components:

1. Project location;

2. Project drainage area;

3. Project facility type;

4. Project inlet/outlet locations;

5. The proposed location of conveyance associated with the project; and

6. Quantification of project benefits, including water supply and pollutant load reduced.

Quantification of project benefits utilized a conceptual-level modeling approach. Both wet and dry weather runoff were considered. For projects capturing dry weather runoff, estimated benefits were quantified by extrapolating dry weather yield results from previously implemented and evaluated projects, including the Pacific Grove ASBS project and checked with ranges from other studies in southern California (IRWD, 2004 and County of Orange, 2017).

For projects capturing stormwater runoff, estimated benefits were quantified by utilizing previous technical studies available and calculations of wet weather runoff recovery. To obtain an estimate of average annual wet weather volume captured and recovered, the range of potential capture was modeled as a function of catchment hydrology, facility configuration, and drawdown rate. Results from hydrologic models were displayed in a nomograph, developed using continuous hydrologic simulation with USEPA’s SWMM. Nomographs were developed for catchments with impervious percent of 25%, 50%, 75%, and 100%; catchment soils comprised of HSG A and HSG B/C/D; and drawdown times of 12 hours, 1 day, 2 days, 3 days, 1 week, 1 month, 6 months, and 1 year. An example nomograph and modeling details are provided in Appendix D.

Using the nomographs developed, the net average annual wet weather volume captured and recovered was then estimated using the following steps for each relevant facility:

1. Calculate facility drawdown time (days) by dividing the live storage volume available (i.e., storage volume above a permanent pool) by the sum of the facility’s discharge rates (i.e., percolation, capture and use, and diversion).

2. Calculate the unit stormwater runoff depth (acre-feet per acre per year) and percent capture using the nomographs for the four points surrounding the project’s imperviousness and drawdown time and apply four-point linear interpolation.

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3. Multiply the annual stormwater runoff depth (acre-feet per acre) by the tributary area (acres) to calculate annual wet weather runoff captured (ac-ft/yr). For comparison, annual stormwater capture was also estimated by multiplying the calculated percent capture by the average annual stormwater runoff using the simplified runoff equation referenced in the Central Coast Joint Effort19 (CCRWQCB, 2013).

4. Subtract the proposed annual wet weather runoff captured and recovered by that of the existing condition (if applicable) to calculate the net annual wet weather runoff recovered.

The runoff produced from the first flush stormwater event was assumed to be equivalent to the runoff generated from the 85th percentile rainfall event. The runoff corresponding to this first flush/ 85th percentile rain event was calculated in accordance with numeric sizing criteria in the Phase II Permit.

Water quality benefits were estimated for wet season runoff using TELR, where total suspended solids (TSS) is used as a surrogate for several water quality constituents (i.e., reductions in TSS concentrations or loads are often proportional to reductions in other particulate-associated water quality constituents). Estimated TSS load reduced for projects was calculated based on an areaweighted TSS loading rate for TELR catchments in the drainage area.

Projects are not part of new/re-development and thus are not required to meet Phase II Permit volumetric capture requirements. Projects were sized to maximize capture for water recovery within the area available for facility construction. The projects are anticipated to be analyzed as part of CCRWQCB PEAIP requirements. The watershed-based outcomes calculated through the runoff and water quality estimates described above are included on the concept designs provided in Appendix F (Hartnell Gulch provided in Appendix G).

19 Average annual wet weather runoff was calculated based on multiplying a runoff coefficient (per Attachment 1 of Central Coast Regional Water Board’s Resolution No. R3-2013-0032) by a conservatively low mean annual precipitation (12.8 inches), and the tributary area.

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7. IMPLEMENTATION STRATEGY AND SCHEDULE

7.1 Resources for Plan and Project Implementation

7.1.1 Resources for Plan Adoption and Adaptive Management Monterey One Water was the lead entity in the preparation of this SWRP on behalf of MRSWMP, including Monterey County and six incorporated cities within the County: Carmel-by-the-Sea, Del Rey Oaks, Monterey, Pacific Grove, Sand City and Seaside. It is anticipated that Monterey One Water and MRSWMP will facilitate future SWRP updates and ongoing adaptive management. The MRSWMP agencies regularly meet to discuss stormwater management, water quality concerns, and other regulatory matters within the Monterey Peninsula region. As part of ongoing management, these regular meetings may include a SWRP meeting agenda item as needed to discuss potential updates to the SWRP and how to prepare and fund the updates.

7.1.2 Resources for Project Implementation
Funding for implementation of projects included in this SWRP will be obtained by the municipal agency, partnership of agencies, or other stakeholder project sponsors capable of implementing the identified projects. Projects identified in this SWRP may be implemented as funding opportunities become available and funds are awarded or allocated to the project.

Sources of project funding may include grants, bond measures, local capital improvement program (CIP) budgets, local revenue streams such as utility rates or fees, and/or other funding mechanisms.

Currently projected sources of grant funding include:
• Round 2 of Proposition 1 stormwater implementation grant funding (solicitation expected in early 2020);
• Round 1 of Proposition 1 IRWM implementation grant funding • Other state bond-funded grants as they become available.

Another potential funding mechanism is through partnerships with Caltrans to fund regional projects that include Caltrans drainage areas.

7.2 Plan Implementation

7.2.1 Timeline for Incorporating the SWRP into the IRWMP As discussed in Section 2, this SWRP is being prepared in close collaboration with the Monterey Peninsula, Carmel Bay, and South Monterey Bay RWMG. The RWMG is the entity tasked with developing and implementing the IRWMP, reviewing projects submitted to the plan, and choosing which projects to put forward for funding. The RWMG includes many of the same agencies that Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 557, Packet Page 657 Final Monterey Peninsula SWRP 54 07.30.2019
are cooperating entities or interested parties in the development of this SWRP. The RWMG lead is the MPWMD.

Monterey One Water coordinated with the RWMG on incorporation of this SWRP into the Monterey Peninsula IRWMP. The SWRP was introduced to the RWMG at a meeting on November 1, 2018 and the SWRP was unanimously accepted for inclusion in the IRWMP as an appendix.

As IRWMP project solicitation processes occur (in response to timelines for available IRWMP grant funding), projects listed in the final SWRP may be proposed by sponsoring entities, vetted and scored through the IRWMP project prioritization process, and included as part of the IRWMP project list as appropriate. The IRWMP decision support tools, including a description of the project review process and weighting of compliance factors, the project application, and the project solicitation schedule, are provided in Appendix I to this plan.

7.2.2 Actions, Projects, and Studies for SWRP Implementation This SWRP identifies seven project concepts and additional project opportunities for which concepts can be developed prior to seeking funding. Identified project opportunities and project concepts are described in Section 6. As funding becomes available, sponsoring entities will take the necessary actions to design and construct the projects. While these project opportunities can provide multiple benefits that support their implementation, integrated regional water management planning and the water supply needs of the region will likely drive decision-making analyses for funding, in addition to the stormwater management and permit compliance needs of the MRSWMP agencies.

The Monterey Peninsula Water Recovery Study, developed concurrently with the SWRP, evaluated the feasibility of establishing a Peninsula-wide water recovery and reclamation system, and identified and evaluated potential projects to capture wet weather and dry weather runoff within the Planning Area. The study provided several potential projects for consideration in the SWRP. Due to the inherent water supply benefits of these potential projects, the projects scored well on the SWRP prioritized projects list and were ranked highly by the participating entities. As a result, all the projects selected for concept design and quantification of benefits in the SWRP are water recovery projects and will be considered for implementation when funding is available.

7.2.3 Entities Responsible for Project Implementation
The primary entity responsible for project implementation, should funding become available, is listed with each of the priority projects included in the SWRP list of projects. However, if other jurisdictions or agencies are located within a project drainage area, partnerships may be developed to support project funding and implementation.

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7.2.4 Community Participation Strategy for SWRP Implementation The inclusive stakeholder participation strategy that supported development of the Monterey Peninsula SWRP, described in SWMP Section 8, will provide a strong basis for continued community participation during SWRP implementation. The SWRP has been made available to the public on the MRSWMP20, and IRWMP21 websites, and a mechanism is provided for community members to submit new project ideas as they are developed. It is also anticipated that outreach and solicitation for new stakeholder projects would occur routinely with SWRP updates.

Community participation will also occur during individual project implementation, which will focus on the community where the project is located. Each project will include its own public participation process to address the concerns of affected residents and businesses and adjust project designs as appropriate and feasible.

SWRP projects will provide an ideal opportunity to showcase the many benefits of green infrastructure, particularly regarding stormwater capture, reduced local flooding, urban greening, and other features and functionality that will serve the community. With proper educational tools such as interpretive signage, the public can also gain a better understanding of how the project provides opportunities to capture, treat, and conserve water. As a result, constructed projects will provide a mechanism for community participation and education that will help garner support for additional projects implemented over time.

7.2.5 Procedures to Track the Status of SWRP Implementation As discussed in Section 7.3 below, this SWRP will be updated over time by MRSWMP, in coordination with updates to the IRWMP and at intervals that are aligned with stormwater regulatory requirements, grant program solicitations, and community interests. The status of project implementation will be tracked by the lead agency for the project and will be incorporated into the SWRP when it is updated.

7.2.6 Potential Timelines and Cost Estimates for Implementing Identified Project Opportunities
As described in section 6.1, the SWRP project identification and prioritization process resulted in a total of 2,289 potential and planned project opportunities, included in Appendix E. Of these, seven projects were identified as top priority projects and developed into concept designs; one of the seven was developed into a 30% design and a CEQA checklist was completed. Section 6 and Appendix H include descriptions of the seven top prioritized projects. As funding sources are identified, project concepts will be incorporated into the responsible jurisdiction’s CIP for detailed

20 http://montereysea.org/stormwater-resource-plan/. 21 http://www.mpirwm.org/Pages/default.aspx Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 559, Packet Page 659 Final Monterey Peninsula SWRP 56 07.30.2019
design and construction. Project management documents for these CIP projects will identify project-specific implementation schedules. Table 12 below provides the status and potential timeline for each top prioritized project for which a concept was developed.

Table 12: Project Concept Status and Potential Timeline Permittee Project Name Project
Status
Total
Estimated
Cost
Anticipated
Funding
Timeline
Anticipated
Design
Completion
Timeline
Anticipated
Constructio
n Timeline
Monterey

1. Hartnell Gulch
Restoration
and Runoff
Diversion
30%
Design/
CEQA
Checklist
Complete
$1,300,000 2020/21 2021/22 2022/23
Monterey

2. Lake El Estero
Diversion to
Sanitary
Sewer
10%
Concept
Design
$320,000 2022/23 2023/24 2024/25
Monterey

3. Monterey
Tunnel
Stormwater
Diversion
10%
Concept
Design
$190,000 2022/23 2023/24 2024/25
Carmelby-the-Sea

4. Carmel-bythe-Sea
Stormwater
Diversion
10%
Concept
Design
$750,000 2020/21 2021/22 2022/23
Pacific
Grove and
Monterey

5. Pacific Grove
Monterey
ASBS
Watershed –
David Avenue
Stormwater
Storage and
Diversion
10%
Concept
Design
$9,800,000 2022/23 2023/24 2024/25
Seaside

6. Del Monte
Manor Park
Infiltration
10%
Concept
Design
$330,000 2019/20 2020/21 2021/22
Seaside
(with
regional
partners)

7. Dry Well
Aquifer
Recharge
Program1
10%
Concept
Design
$4,300,000 2022/23 2023/24 2024/25
1 For the Seaside and regional partner Dry Well Aquifer Recharge Program, the estimated full program cost is provided; however, a smaller portion of the program may be implemented by the proposed timeline. The portion of the project that may be implemented is dependent on coordination with regional partners, outcomes of technical feasibility studies, stakeholder input, potential permits needed, and other project investigations.

Appendix E includes additional project opportunities for which concepts can be developed prior to seeking funding. The estimated costs of implementing these additional project opportunities depends on a number of factors, including location, site conditions, project size, administrative Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 560, Packet Page 660 Final Monterey Peninsula SWRP 57 07.30.2019
costs, project scale, infrastructure upgrades, and other components. For the purpose of estimating the cost of implementation, it was assumed that approximately 1% of the project opportunities identified as part of the SWRP will be implemented over the next 20 years (i.e., the top 23 prioritized projects of the 2,289 projects identified), and will therefore have a need for grant funding assistance. These 23 projects include the top seven projects for which concepts were developed as part of this SWRP, as well as 16 additional projects identified based on project proponent ranking and project metrics-based multi-benefit analysis score. The additional 16 projects included in the cost analysis require additional feasibility analysis (including physical, permitting, administrative, and stakeholder input -based feasibility, among other project analyses) prior to developing concepts, and may or may not ultimately be found to be feasible for implementation. However, the combined top 23 projects used for the cost analysis should be considered representative of the potential composition of projects that could be implemented within the next 20 years, should funding be available and secured.

The 23 projects identified for the implementation costs analysis, along with the estimated costs associated with each, are provided in a tab titled “Top 1% Projects – Costs” in the Appendix E Project Database. Preliminary planning level cost estimates for implementing these 23 projects were developed according to three project categorizations:
• Top prioritized projects, for which concept costs were developed (i.e., the top seven projects, see Appendices F and G for project descriptions and detailed costs); • Water recovery projects, for which a range of capital costs were developed as described in Appendix D, the Water Recovery Study; and
• Green Infrastructure projects, for which cost range was developed based on a statistical analyses of green infrastructure project costs compiled from Caltrans, nine northern and southern California cities, and Bay Area Stormwater Management Agencies Association pilot projects, and Southern California Enhanced Watershed Management Plan summaries.

A summary of the cost ranges associated with each category are provided in Table 13.

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Table 13: Project Concept Status and Potential Timeline Project Type Number of
Projects
Estimated Net
Recovered
Water Volume
(acre-feet/year)
Assumed
Drainage
Area
(Acres)1
Total Estimated
Capital Cost (Low)
Total Estimated
Capital Cost (High)
Top Prioritized
Projects2 7 290 6,221 $16,990,000 $16,990,000
Water Recovery
Projects3 8 1,047 19,124 $23,300,000 $93,000,000
Green
Infrastructure4 8 -- 184 $9,282,000 $32,658,000
Total 23 1,337 25,529 $49,572,000 $142,648,000
1Drainage area represents the tributary area from which runoff is assumed to be captured; however, for water recovery study projects, only a small percentage of total runoff may be estimated to be captured, depending on the assumed project design. The anticipated runoff capture for these projects is described in Appendices F and G for the top prioritized projects, and in the Water Recovery Study (Appendix D) for other water recovery projects. Green infrastructure projects are assumed to be sized to meet MS4 water quality requirements. 2 Preliminary cost estimates have been developed for these projects, so a range is not provided. 3 Costs developed based on the range of capital costs provided in Appendix D, the Water Recovery Study. 4 Costs developed based on a statistical analysis of available green infrastructure projects; the low costs represent the 25th percentile unit (i.e., per acre) cost values, the high costs represent the 75th percentile unit costs.

The top 1% of projects for which costs were developed are assumed to be implemented at an approximately equal rate for each five-year period over the next 20 years. To develop anticipated funding needs for the five year periods between 2020 and 2040, the top seven prioritized projects are assumed to be implemented first, and the remaining sixteen projects are distributed thereafter.

The anticipated funding needed to meet this project implementation rate for each five year period is provided in Table 14 below.

Table 14: Estimated Funding Needs for Five-Year Increments 2020 - 2040 Five-year Period 2020-2024 2025-2029 2030-2034 2035-2039 Number of Projects 6 5 7 5
Estimated Cost (Low) $12,690,000 $15,618,000 $7,824,000 $13,440,000 Estimated Cost (High) $12,690,000 $45,306,000 $45,838,000 $38,815,000 Project proponents will be responsible for tracking the implementation status of their projects and documenting performance measures for completed projects as described in Section 7.4. The cost to implement all 2,289 SWRP projects included in this plan, should detailed project investigation find feasibility favorable and funding secured, is estimated to range from $670,000,000 to $3,020,000,000 (see Appendix E for cost ranges for each project). Feasible and funded SWRP projects would be anticipated to be implemented by 2120.

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7.2.7 Strategy and Timeline for Obtaining Necessary Federal, State, and Local Permits As funding is identified for projects, the initial task for project implementation will involve a planning phase that will identify necessary permits. All necessary federal, state, and local permits will be obtained by project proponents as needed for project implementation.

7.3 Adaptive Management – Maintaining a Living Document This SWRP will be updated over time to incorporate additional multi-benefit projects that may be identified after completion of the SWRP. MRSWMP will be responsible for maintaining and updating the SWRP, in coordination with updates to the IRWMP, and at intervals that are aligned with stormwater regulatory requirements, grant program solicitations, and community interests.

This SWRP will be posted on the MRSWMP22 and IRWMP23 websites, along with clear procedures for updating or adding future projects. A form has been provided on the websites for agencies and community members to submit project ideas. It is also anticipated that outreach and solicitation for new stakeholder projects would occur routinely with SWRP updates.

In addition to updating the project list, the SWRP may also be revised to reflect changing conditions in local watersheds and knowledge gained through stormwater program implementation, including programs to address TMDL and ASBS requirements. Ongoing adaptations to the SWRP may include and/or be influenced by:
• Re-characterization of water quality priorities;
• Source assessment re-evaluations;
• Project effectiveness assessments;
• An updated metrics-based, quantitative analysis;
• Deleted or new projects;
• Identification of completed projects; and/or
• Modified statutory/stormwater permit requirements (e.g., a new TMDL).

As projects are implemented and lessons learned through wider scale integration of stormwater capture projects within traditional infrastructure, this SWRP will be periodically updated to provide revisions to the project implementation plan. This is expected to occur approximately once

22 http://montereysea.org/stormwater-resource-plan/. 23 http://www.mpirwm.org/Pages/default.aspx Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 563, Packet Page 663 Final Monterey Peninsula SWRP 60 07.30.2019
every five years, coinciding with the five-year cycle for updates to the Small MS4 (Phase II) General Permit.

Data related to implemented projects will be stored and made available through the TELR project tracking tool, which will be used to track all projects relevant to MS4 compliance (currently in development). All implementation and monitoring data collected for MRSWMP, including those data related to identified SWRP projects, is reported in MRSWMP Annual Reports, which are available publicly at http://montereysea.org/program-documents/.

Any future projects that may be required to meet new or redevelopment requirements will refer to the Stormwater Technical Guide for Low Impact Development, which provides design criteria and types of BMPs to be used for new or redevelopment (MRSWMP, 2015).

7.4 Implementation Performance Measures
The project concepts and the analyses performed for the Water Recovery Study and the SWRP estimated expected outcomes, or benefits, of the projects included in this SWRP. These outcomes include water supply augmentation and water quality benefits, in addition to the other benefit categories of flood management, community, and environmental benefits. For example, this SWRP provides quantitative estimates for each of the seven concept projects of the volume of water supply that may be provided and the load of a pollutant that may be removed from the receiving water. In addition, for all project opportunities identified in this SWRP, an estimated range of expected water supply benefits (in ac-ft/yr) is provided and a qualitative yes/no assessment for pollutant load reduced.

Extensive surface water and groundwater monitoring is currently being conducted throughout the Planning Area, and this ongoing monitoring will continue. The significant monitoring efforts currently being conducted are intended to assess the quantity and quality of groundwater used for water supply purposes, the overall health of receiving water quality, the quality of stormwater discharges, the impacts of MS4 discharges on receiving waters, and compliance with TMDLs and water quality objectives. Ongoing monitoring results will be analyzed as needed to evaluate how actual project specific performance compares with the expected outcomes of the SWRP. If needed, SWRP implementation may be adjusted based on performance data collected, such that project types with monitoring data showing effective performance are prioritized. The need for additional project specific performance evaluation monitoring will be determined during the project design phase. Grant funded projects may be expected to implement performance monitoring if required by the grant agreement.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 564, Packet Page 664 Final Monterey Peninsula SWRP 61 07.30.2019

8. EDUCATION, OUTREACH, AND PUBLIC PARTICIPATION

8.1 Goals of Outreach, Education, and Public Participation Meaningful public participation goals, objectives, and strategies are critical to involving the public in the process of recommending and pursuing projects and programs in their communities. A SWRP Stakeholder Outreach, Education, and Engagement Plan (Stakeholder Plan) was prepared to coordinate and guide outreach activities to involve stakeholders in the development of the SWRP and obtain input on water resource issues that are important to them. Stakeholders include the general public, federal agencies, state agencies, local municipalities, water retailers, water/wastewater districts, community groups, business associations, and disadvantaged communities. The Stakeholder Plan identified the goals of stakeholder involvement and described the tasks that would be implemented to conduct outreach to stakeholders.

Stakeholder outreach for the SWRP was conducted to meet the following goals:

1. Inform stakeholders on the SWRP process and the need for stormwater capture and treatment projects.

2. Obtain stakeholder input in identifying locations and types of stormwater capture and treatment projects.

3. Obtain feedback on the initial prioritized list of potential projects.

4. Obtain comments on and support for the SWRP.

5. Obtain feedback on environmental justice needs and concerns associated with SWRP implementation.

8.2 Key Messages
The following key messages were conveyed to stakeholders:
• Benefits of using stormwater as a resource;
• Purpose and content of the SWRP;
• Need for stormwater capture and treatment projects; and • Process for identifying, assessing, and prioritizing stormwater capture and treatment projects.

8.3 Stakeholder Outreach, Education, and Engagement Tasks This section describes the tasks that were implemented to meet the goals of stakeholder outreach.

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8.3.1 Stakeholder Group Formation
Stakeholder outreach was built upon the work done by the Monterey Peninsula RWMG24 to develop the Monterey Peninsula IRWMP. As part of developing the Monterey Peninsula IRWMP, the RWMG identified and contacted 130 stakeholders, representing public agencies, local municipalities and special districts, environmental non-profits, community groups, academic educational institutions, private companies, landowners, and individuals. The SWRP project team obtained the IRWMP stakeholder contact list and updated it based on feedback from TAC members to develop the potential Stakeholder List included in Appendix H.

To ensure that DACs were well-represented on the Stakeholder Group, lists of potential DAC stakeholders were obtained from the City of Seaside, and included in the potential SWRP Stakeholder List. The following four census tracts within the SWRP area are considered DACs:
• Tract 127 (Monterey);
• Tract 136 (Seaside);
• Tract 137 (Seaside); and
• Tract 140 (Seaside/Sand City).

In addition to the above, participants on the Technical Stakeholder Group for the Water Recovery Study were also invited to participate on the SWRP Stakeholder Group. The Stakeholder List was updated, as needed, throughout the SWRP process.

8.3.2 Stakeholder Group Information Requests and Meetings All individuals on the Stakeholder List were informed about the SWRP via multiple emails and invited to attend the Stakeholder Group meetings. Stakeholders representing DACs were also mailed postcards with information on the first meeting. Two Stakeholder Group meetings were held to share information and solicit input on the SWRP:
• The first meeting, held on October 17, 2017, introduced the Stakeholder Group to the SWRP planning process, provided information on the metrics and methodology for identifying, assessing, and prioritizing potential projects, presented preliminary findings from the Water Recovery Project Feasibility Study, and provided opportunities for stakeholders to submit project ideas. After the first meeting, the stakeholders were emailed a spreadsheet for submitting information regarding stakeholder-planned projects relevant

24 The RWMG includes Big Sur Land Trust, City of Monterey, Monterey Peninsula Water Management District, Monterey County Water Resources Agency, Monterey One Water, Marina Coast Water District, and Resource Conservation District of Monterey County.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 566, Packet Page 666 Final Monterey Peninsula SWRP 63 07.30.2019
to the SWRP. Stakeholders were also encouraged to provide comments on the methodology for prioritizing projects.
• The second meeting, held on February 8, 2018, presented the prioritized list of multibenefit stormwater capture projects to stakeholders, and requested their feedback on the top ranked projects. Stakeholders were also requested to provide input on project characteristics that should be considered for identifying top projects.

8.3.3 Public Outreach Meeting
One public meeting was held on June 27, 2018 to present the Public Draft SWRP to stakeholders and the public to obtain their feedback. All individuals on the Stakeholder List were invited to attend the meeting. A bilingual flyer (English and Spanish) advertising the public outreach meeting was developed and distributed via email and community center postings. In addition, a public meeting notice was published in the Monterey County Weekly newspaper. The public outreach meeting materials are provided in Appendix H.

8.3.4 Public Involvement in the Implementation of the SWRP and Completion of Projects Following completion of the final SWRP, further input will be sought from residents and businesses in affected communities as individual projects are planned, designed, and constructed.

As described in Section 7.2.4, each project will include its own public participation process to address the concerns of affected residents and businesses and adjust project designs as appropriate and feasible. This step will increase stakeholder involvement in the project design and develop partnerships needed for implementation and operation and maintenance. Mechanisms for public engagement may include the following:
• Posting project information on local agency websites. • Including articles on individual projects in local agency newsletters. • Distributing project information via direct mailings, and/or posting information on social media sites (Facebook, Next Door, etc.).
• Presenting project information at neighborhood meetings. • If needed, conducting bilingual outreach on specific projects to engage residents and businesses located in Disadvantaged Communities (DACs).

Stakeholder involvement will also be included as part of the process for future updates to the SWRP.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 567, Packet Page 667 Final Monterey Peninsula SWRP 64 07.30.2019

8.4 Summary of Tasks and Schedule
Table 15 summarizes the stakeholder outreach, education, and engagement tasks and the schedule for implementation.

Table 15: Summary of Tasks and Schedule
Task Description Schedule
1 Stakeholder Group Formation • Contacted potential stakeholders – September 2017 • Established Stakeholder Group – October 2017
2 Stakeholder Group Information
Requests and Meetings
• First meeting and Project Solicitation Request – October 17, 2017
• Second meeting – February 8, 2018
• Project Prioritization Input Request – February 8, 2018 3 Public Outreach Meeting • June 27, 2018
4 Stakeholder Involvement in
Implementation of SWRP and
Completion of Projects
• Involvement in SWRP updates as described in Section 7 Implementation Strategy
• Involvement in specific project implementation (schedule to be developed as part of each project schedule)

8.5 Summary of Completed Stakeholder Meetings
The two stakeholder meetings were well-attended and provided a good insight into issues that are important to stakeholders. Feedback received from stakeholders at the meetings and via emails was useful in guiding the SWRP development. Overall, stakeholders were satisfied with the SWRP process. Many stakeholders noted that the SWRP should focus on projects that augment water supply, which was consistent with the focus of the TAC members as well. Stakeholders also expressed support for regional projects and emphasized the need for agencies to collaborate on identifying and implementing regional projects.

Stakeholder meeting summary packages are also provided in Appendix H.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 568, Packet Page 668 Final Monterey Peninsula SWRP 65 07.30.2019

9. REFERENCES
California Interagency Watershed Map of 1999, updated May 2004 (Calwater 2.2.1).

Central Coast Regional Water Quality Control Board (CCRWQCB), 2011. Certification of Fecal Indicator Bacteria TMDLs And Alternative Implementation Programs for The Lower San Antonio River, Tularcitos Creek, Cholame Creek, San Lorenzo Creek, And Arroyo De La Cruz Watersheds, Staff Report. 19 April.

CCRWQCB, 2013. Resolution No. R3-2013-0032 Attachment 1. Post-Construction Stormwater Management Requirements for Development Projects in the Central Coast Region. July

12. CCRWQCB, 2016. 2014 Integrated Report Assessing Waters of the Central Coast Region- Clean Water Act (CWA) Section 303(d) List of Water Segments Not Meeting Water Quality Standards and CWA Section 305(b), Water Quality Condition Report. Includes Resolution R3-2016-0053. November.

City of Carmel-by-the-Sea, 2014. ASBS Special Protections Draft Compliance Plan for The City of Carmel-By-The-Sea. 15 September. http://www.swrcb.ca.gov/water_issues/programs/ocean/docs/asbs_general_exception/carmel_dcp_04302015.pdf City of Pacific Grove and City of Monterey, 2014. Pacific Grove Area of Special and Biological Significance, Draft Compliance Plan. 14 September. http://www.swrcb.ca.gov/water_issues/programs/ocean/docs/asbs_general_exception/pacific_dcp_04302015.pdf City of Seaside, 2017. “Seaside Municipal Water System.” http://www.ci.seaside.ca.us/435/- Seaside-Municipal-Water-System. Visited 17 August.

County of Monterey Assessor’s Office, 2017. E-mail communication with Gary de Amaral, titled “RE: Request for List of Monterey County Parcel Use Codes.” 25 October.

County of Orange, 2017. South Orange County Watershed Management Area Water Quality Improvement Plan. 1 April.

Geosyntec, Consultants, Inc. 2018. Monterey Peninsula Water Recovery Study Report, Part of the Monterey Peninsula Stormwater Resource Plan. Prepared for the Monterey Regional Stormwater Management Program. 16 April.

Irvine Ranch Water District (IRWD) and Municipal Water District of Orange County (MWDOC). 2004. The Residential Runoff Reduction Study. July.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 569, Packet Page 669 Final Monterey Peninsula SWRP 66 07.30.2019
Local Agency Formation Commission (LAFCO) of Monterey County, 2016. 2016 Municipal Service Review and Sphere of Influence Study: Carmel Area Wastewater District. 27 June.

Los Angeles Department of Public Works, 2017. “Methodology for Prioritizing Structural BMP Implementation.” http://ladpw.org/wmd/bmpmethod/overview.shtm. Visited 1 November.

Marina Coast Water District, 2017. “Securing Our Water Supply.” http://www.mcwd.org/- gsa_water_supply.html. Visited 17 August.

Monterey County Health Department, 2009. Carmel Highlands Onsite Wastewater Management Plan. Prepared by Questa Engineering Corporation, Todd Engineers, and Denise Duffy & Associates. November.

Monterey County Resource Management Agency, 2014a. Fishery Analysis for the Carmel River Lagoon Biological Assessment Report. Prepared by D.W. Alley & Associates Aquatic Biology. March.

Monterey County Resource Management Agency, 2014b. County Service Area 50 Final Lower Carmel River Stormwater Management and Flood Control Report. Prepared by Balance Hydrologics, Inc., Whitson Engineers, Pacific Geotechnical Engineering, and DD&A.

Monterey Peninsula Water Management District (MPWMD), 2014. Los Padres Dam and Reservoir Long-Term Strategic and Short-Term Tactical Plan. Final. May.

MPWMD, 2019. 2018 Goals and Objectives. final 11-01-18. File sent via e-mail from L.

Hampson, April 3.

Monterey Peninsula Water Management District and Denise Duffy & Associates (DD&A), 2014.

Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Plan Update. May.

San Clemente Dam Removal Project, 2017. http://www.sanclementedamremoval.org/. Visited 13 October 2017.

San Mateo Countywide Water Pollution Prevention Program (SMCWPPP), 2017. Stormwater Resource Plan for San Mateo County. February.

Seaside Groundwater Basin Watermaster Board, 2006. Seaside Basin Monitoring and Management Program. 17 May.

State Water Resources Control Board (SWRCB), 1995. Order on Four Complaints Filed Against the California-American Water Company, Carmel River, Monterey county. Order No. WR 95-10. 6 July.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 570, Packet Page 670 Final Monterey Peninsula SWRP 67 07.30.2019
SWRCB, 2009. In the Matter of the Unauthorized Diversion and Use of Water by the California American Water Company, Carmel River, Monterey. Order No. WR 2009-0060.

SWRCB, 2015a. Storm Water Resource Plan Guidelines. 15 December.

SWRCB, 2015b. State of California’s Trash Amendments to the Water Quality Control Plan for Ocean Waters of California and Part 1 Trash Provisions of the Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California.

SWRCB, 2016. In the Matter of Application of California American Water Company to Amend State Water Board Order 2009-0060. Order No. WR 2016-0016.

The Carmel River Watershed Conservancy, 2017a. Active Projects in the Carmel River Watershed.

January.

The Carmel River Watershed Conservancy, Resource Conservation District of Monterey County, and MPWMD, 2017b. Carmel River Watershed Assessment and Action Plan, 2016 Update. January.

United States Census Bureau, 2017. Census Urbanized Areas and Census Designated Places, downloaded from https://www.census.gov/cgi-bin/geo/shapefiles/index.php. Visited 14 November.

United States Environmental Protection Agency (USEPA), 2017a. “What is Green Infrastructure?” https://www.epa.gov/green-infrastructure/what-green-infrastructure. Visited 25 October.

USEPA, 2017b. “System for Urban Stormwater Treatment and Analysis IntegratioN (SUSTAIN).” https://www.epa.gov/water-research/system-urban-stormwater-treatmentand-analysis-integration-sustain. Visited 1 November.

United States Geological Survey (USGS), 1997. Geologic Map of The Monterey And Seaside

7.5−Minute Quadrangles, Monterey County, California: A Digital Database. https://pubs.usgs.gov/of/1997/of97-030/mo-se.pdf. Visited 12 October 2017.

Ventura Countywide Stormwater Quality Management Program, 2016. Ventura Countywide Municipal Stormwater Resource Plan. July.

Water & Wastes Digest (W&WD), 2010. Water Company Saves with High-Performance Flow Measurement. Marydine Washington. 18 February. https://www.wwdmag.com/- channel/casestudies/water-company-saves-high-performance-flow-measurement. Visited 28 August 2017.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 571, Packet Page 671

FIGURES
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 572, Packet Page 672

CARMEL BY-THE-SEA

DEL REY OAKS

MONTEREY
SAND
CITY

SEASIDE
Cachagua Creek
Tularc
Rana Creek
itos Creek
Las Gazas Creek
Pine Creek
Ridge
Turner Creek
£¤1
£¤68
£¤1
£¤183
£¤101
Canyon Del
Rey-Frontal
Monterey Bay
El Toro
Creek-Salinas
River
Big Sur
River-Frontal
Pacific Ocean
Carmel River
Carme l River
Carmel River
Car mel River
San Jose Creek
Malpas o Creek
Majors Creek

PACIFIC GROVE
P:\GIS\MRWPCA\Project\SWRP 2018\Stormwater Resource Plan Planning Area Figure 1.mxd 8/29/2018 10:11:39 AM Monterey Peninsula Stormwater Resource Plan
Map of Monterey Peninsula Region
Stormwater Resource Plan Planning Area
Figure
1 Oakland, CA September 2018
Notes:

Areas outside of city boundaries are unincorporated Monterey County.

Shapefiles and maps received from the Association of Monterey Bay Area Governments and the Monterey Peninsula Water Management Agency. ³ 0 9
Miles
Legend
Integrated Regional Water
Management Plan Area
Monterey Peninsula Water
Management District
Boundary
Carmel Area Waste Water
District
USGS / DWR Watershed
City Limit
Groundwater Basins
Adjucated Seaside
Groundwater Basin
Salinas Valley Corral De
Tierra Area
Salinas Valley Marina
Carmel Valley Groundwater
Basin
303(d) Listed River/Stream
River/Stream
Highway
Waterbody
Federal, State, and Regional
Parks, and Other Open
Lands
Area of Special Biological
Significance
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 573, Packet Page 673 Stillwater Cove
Tularcitos
Creek
P:\GIS\MRWPCA\Project\SWRP 2018\ASBS-303d Watersheds Figure 2.mxd 8/29/2018 11:44:31 AM Monterey Peninsula Stormwater Resource Plan
Monterey Peninsula Region
ASBS and 303(d)-Listed Waterbodies
And Associated Watersheds
Figure
2 Oakland, CA September 2018
Legend
Monterey Peninsula IRWMP / SWRP
Boundary
303(d) Listed Waterbody
Areas of Special Biological
Significance (ASBS)
Pacific Grove
Carmel Bay
Point Lobos
ASBS / 303(d) Watersheds
Pacific Grove
Carmel ASBS / Stillwater Cove
Point Lobos
Monterey Harbor / Del Monte Beach
303(d) 1
Majors Creek 303(d)1
Tularcitos Creek 303(d)2
Monterey
Harbor / Del
Monte Beach
Majors
Creek
³ 0 1.75 3.5 7
Miles
Notes:
1: Assumed watershed consists of TELR catchments
draining directly to impaired waterbody.

2. Assumed watershed consists of parcels within 500
feet of Tularcitos Creek.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 574, Packet Page 674 CARMEL
BY-THESEA

DEL REY OAKS

SAND CITY

SEASIDE

PACIFIC GROVE

MONTEREY
P:\GIS\MRWPCA\Project\SWRP 2018\Parks Coverage Figure 3.mxd 8/29/2018 11:43:44 AM Monterey Peninsula Stormwater Resource Plan
Map of Monterey Peninsula Region
Received Parks & Protected Open Space Data
Oakland, CA September 2018
³ 0 4.5 9
Miles
Legend
Monterey Peninsula IRWMP/SWRP Boundary
City Limit
US Federal Land / Park
State Park
Regional Park
Other Parks and Protected Open Space (Local / County / Special District / Private) Figure
3 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 575, Packet Page 675 Interaction between Water Recovery Study
Analyses and SWRP Analyses
Monterey Peninsula Stormwater Resource Plan
Figure
WW2405 September 2018
4 Notes:

1. Public Parcels/ ROWs and Private Undeveloped Parcels

2. Not identified as potential Water Recovery Study Project

3. In some cases, a project may have multiple facility characteristics Conduct GIS-Based Opportunity Analyses:

1. Preliminary Feasibility Analysis

DEL REY

MONTEREY OAKS

PACIFIC
GROVE
SAND
CITY

SEASIDE
Census
Tract 136
($46,756)
Census
Tract 137
($42,551)
Census
Tract 140
($47,759)
Census
Tract 127
($46,400)
P:\GIS\MRWPCA\Project\MRSWMP_FigureA.1-4.mxd 3/10/2016 9:42:51 AM 0 0.75
Miles
³
Disadvantaged Communities in Monterey
Peninsula Region Stormwater Resource
Plan Area
Monterey Peninsula Stormwater Resources Plan
Figure
5 Oakland, CA August 2019
Legend
Integrated
Regional
Water
Management
Plan Area
Highways
DAC Census
Tracts
City Limits
£¤1
£¤101
£¤68
£¤183
£¤68
NOTE: The 2006-2010 American Community Survey (ACS) 5-Year Estimates shows that four census tracts within the planning region can be considered a disadvantaged community (DAC). According to the ACS survey, the median household income (MHI) at which an area can be considered a DAC is $48,706 (i.e., 80% of the California MHI). The Census tracts outlined in this figure are considered DAC because their MHI (in parenthesis) were reported to be below that threshold MHI.

Notes:

Shapefiles and maps received from
the Association of Monterey Bay Area
Governments and the Monterey Peninsula
Water Management Agency.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 577, Packet Page 677

APPENDIX A
SWRP Self-Certification Checklist
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 578, Packet Page 678 A - 1
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
Storm Water Resource Plan Checklist
and Self-Certification
The following should be completed and submitted to the State Water Resources Control Board Division of Financial Assistance in support of a storm water resource plan /functionally equivalent plan. The documents submitted, including this checklist, will be used to determine State Water Board concurrence with the Storm Water Resource Plan Guidelines and statutory water code requirements.

When combining multiple documents to form a functionally equivalent Storm Water Resource Plan, submit a cover letter explaining the approach used to arrive at the functionally equivalent document. The cover letter should explain how the documents work together to address the Storm Water Resource Plan Guidelines.

STORM WATER RESOURCE PLAN GENERAL CONTACT INFORMATION
Contact Info:

Name
Phone Number
Email
Jeff Condit, Monterey One Water and
Monterey Regional Stormwater Management Program
831-645-4621
[email protected]
Date Submitted to State Water
Resource Control Board:

September 28, 2018; December 20, 2018; April 12, 2019;
Final: July 31, 2019
Regional Water Quality
Control Board:

Central Coast Regional Water Quality Control Board
Title of attached documents
(expand list as needed):

1. Monterey Peninsula Region Stormwater Resource
Plan, Figures, Map Package, and Appendices A-I.

STORM WATER RESOURCE PLAN INFORMATION
Storm Water Resource Plan
Title:

Monterey Peninsula Region Stormwater Resource Plan
Date Plan Completed/Adopted: September 28, 2018
Public Agency Preparer: Monterey One Water, on behalf of the Monterey Regional Stormwater Management Program
IRWM Submission: November 1, 2018
Plan Description: The Stormwater Resource Plan was developed to assist with the development and implementation of stormwater
and dry weather runoff projects that provide multiple
benefits in the Monterey Peninsula region.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 579, Packet Page 679 A - 2
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
Checklist Instructions:

For each element listed below, review the applicable section in the Storm Water Resource Plan Guidelines and enter ALL of the following information. Be sure to provide a clear and thorough justification if a recommended element (non shaded) is not addressed by the Storm Water Resource Plan.

A. Mark the box if the Storm Water Resource Plan meets the provision B. In the provided space labeled References, enter:

1. Title of document(s) that contain the information (or the number of the document listed in the General Information table above);

2. The chapter/section, and page number(s) where the information is located within the document(s);

3. The entity(ies) that prepared the document(s) if different from plan preparer;

4. The date the document(s) was prepared, and subsequent updates; and

5. Where each document can be accessed1 (website address or attached).

STORM WATER RESOURCE PLAN

CHECKLIST AND SELF-CERTIFICATION
Mandatory Required Elements per California Water Code are Shaded and Text is Bold Y/N Plan Element Water Code
Section

WATERSHED IDENTIFICATION
(GUIDELINES SECTION VI.A)
Y 1. Plan identifies watershed and subwatershed(s) for storm water resource planning.
10565(c)
10562(b)(1)
10565(c)
References:

2. Plan is developed on a watershed basis, using boundaries as delineated by USGS, CalWater, USGS Hydrologic Unit designations, or an applicable integrated regional water management group, and includes a description and boundary map of each watershed and sub-watershed applicable to the Plan.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 3 (pages 14-25), and in Figure 1.
1 All documents referenced must include a website address. If a document is not accessible to the public electronically, the document must be attached in the form of an electronic file (e.g. pdf or Word 2013) on a compact disk or other electronic transmittal tool.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 580, Packet Page 680 A - 3
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019

WATERSHED IDENTIFICATION
(GUIDELINES SECTION VI.A)
Y 3. Plan includes an explanation of why the watershed(s) and sub-watershed(s) are appropriate for storm water management with a multiple-benefit watershed approach; References:

4. Plan describes the internal boundaries within the watershed (boundaries of municipalities; service areas of individual water, wastewater, and land use agencies, including those not involved in the Plan; groundwater basin boundaries, etc.; preferably provided in a geographic information system shape file);
References:

Y 5. Plan describes the water quality priorities within the watershed based on, at a minimum, applicable TMDLs and consideration of water body-pollutant combinations listed on the State’s Clean Water Act Section 303(d) list of water quality limited segments (a.k.a impaired waters list); References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Sections 3.2.1 (page 18), Section 3.3.1 (page 22), Section 3.4 (page 24), and Section 3.5 (page 25), impaired waters lists in Table 7 (page 18) and Table 8 (page 22).

Y 6. Plan describes the general quality and identification of surface and ground water resources within the watershed (preferably provided in a geographic information system shape file); References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 3.1 (pages 14-15), and in detail in Sections 3.2-3.5 (pages 15, 16, and 20-24) and in Figure 1 and attached map package of Figure 1 shapefiles.

Y 7. Plan describes the local entity or entities that provide potable water supplies and the estimated volume of potable water provided by the water suppliers; References:

Y 8. Plan includes map(s) showing location of native habitats, creeks, lakes, rivers, parks, and other natural or open space within the sub-watershed boundaries; and References:

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 581, Packet Page 681 A - 4
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019

WATERSHED IDENTIFICATION
(GUIDELINES SECTION VI.A)
Y

9. Plan identifies (quantitative, if possible) the natural watershed processes that occur within the sub-watershed and a description of how those natural watershed processes have been disrupted within the sub-watershed (e.g., high levels of imperviousness convert the watershed processes of infiltration and interflow to surface runoff increasing runoff volumes; development commonly covers natural surfaces and often introduces non-native vegetation, preventing the natural supply of sediment from reaching receiving waters).

References:

WATER QUALITY COMPLIANCE
(GUIDELINES SECTION V)
Y 10. Plan identifies activities that generate or contribute to the pollution of storm water or dry weather runoff, or that impair the effective beneficial use of storm water or dry weather runoff.
10562(d)(7)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 4.1 Y 11. Plan describes how it is consistent with and assists in, compliance with total maximum daily load implementation plans and applicable national pollutant discharge elimination system permits.
10562(b)(5)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 4.2 ( 27 31) Y 12. Plan identifies applicable permits and describes how it meets all applicable waste discharge permit requirements. 10562(b)(6) References:

ORGANIZATION, COORDINATION, COLLABORATION
(GUIDELINES SECTION VI.B)
Y 13. Local agencies and nongovernmental organizations were consulted in Plan development. 10565(a)
References:

Y 14. Community participation was provided for in Plan development. 10562(b)(4) References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 2.3 (pages 8 9)
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 582, Packet Page 682 A - 5
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019

ORGANIZATION, COORDINATION, COLLABORATION
(GUIDELINES SECTION VI.B)
Y 15. Plan includes description of the existing integrated regional water management group(s) implementing an integrated regional water management plan (IRWMP).

References:

16. Plan includes identification of and coordination with agencies and organizations (including, but not limited to public agencies, nonprofit organizations, and privately-owned water utilities) that need to participate and implement their own authorities and mandates in order to address the storm water and dry weather runoff management objectives of the Plan for the targeted watershed.

References:

Y 17. Plan includes identification of nonprofit organizations working on storm water and dry weather resource planning or management in the watershed.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 2.3 (pages 8 9) Y 18. Plan includes identification and discussion of public engagement efforts and community participation in Plan development.

References:

19. Plan includes identification of required decisions that must be made by local, state or federal regulatory agencies for Plan implementation and coordinated watershed-based or regional monitoring and visualization
References:

Y 20. Plan describes planning and coordination of existing local governmental agencies, including where necessary new or altered governance structures to support collaboration among two or more lead local agencies responsible for plan implementation.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; described in Section 2.5 (page 12), decisions identified in Section 2.1 (page 5) and Section 2.2 (pages 6-7). Local governmental agencies are coordinated through the Monterey Regional Stormwater Management Program (MRSWMP), described in Section 1.1 (page 1) and Section 2.1 (page 5).

Y 21. Plan describes the relationship of the Plan to other existing planning documents, ordinances, and programs established by local agencies.

References:

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 583, Packet Page 683 A - 6
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019

ORGANIZATION, COORDINATION, COLLABORATION
(GUIDELINES SECTION VI.B)
N/A 22. (If applicable)Plan explains why individual agency participation in various isolated efforts is appropriate.

References: Not applicable.

QUANTITATIVE METHODS
(GUIDELINES SECTION VI.C)
Y

23. For all analyses:

Plan includes an integrated metrics-based analysis to demonstrate that the Plan’s proposed storm water and dry weather capture projects and programs will satisfy the Plan’s identified water management objectives and multiple benefits.

References:

24. For water quality project analysis (section VI.C.2.a) Plan includes an analysis of how each project and program complies with or is consistent with an applicable NPDES permit. The analysis should simulate the proposed watershed-based outcomes using modeling, calculations, pollutant mass balances, water volume balances, and/or other methods of analysis. Describes how each project or program will contribute to the preservation, restoration, or enhancement of watershed processes (as described in Guidelines section VI.C.2.a) References:

25. For storm water capture and use project analysis (section VI.C.2.b):

Plan includes an analysis of how collectively the projects and programs in the watershed will capture and use the proposed amount of storm water and dry weather runoff.

References:

26. For water supply and flood management project analysis (section VI.C.2.c):

Plan includes an analysis of how each project and program will maximize and/or augment water supply.

References:

Appendix D (the Water Recovery Study) describes how water supply augmentation projects were identified.

Full project database provided as Appendix E.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 584, Packet Page 684 A - 7
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019

QUANTITATIVE METHODS
(GUIDELINES SECTION VI.C)
Y 27. For environmental and community benefit analysis (section VI.C.2.d):

Plan includes a narrative of how each project and program will benefit the environment and/or community, with some type of quantitative measurement.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 5.3 (pages 35-42) and Section 5.4 (pages 42-45) describe how potential projects were identified and analyzed for various scoring metrics associated with the target multiple benefits, including environmental and community benefits. Specifically, as summarized on pages 43-44 and in Table 10, project opportunities that “re-establish natural water drainage systems or develop, restore, or enhance habitat and open space” received a score of 2 for providing environmental benefits; and project opportunities that provide “community enhancement” or “enhancement to DAC”, i.e., projects that specifically provide public use areas or public education components, or are located in a DAC (see section 5.4.1, page 43), received a score of 2 (each) for providing community benefits. A narrative explaining benefits is included for top projects in section 6.3 (pages 48-51).

Full project database, including environmental and community scores and descriptions, as applicable for certain projects, provided as Appendix E.

28. Data management (section VI.C.3):

Plan describes data collection and management, including: a) mechanisms by which data will be managed and stored; b) how data will be accessed by stakeholders and the public; c) how existing water quality and water quality monitoring will be assessed; d) frequency at which data will be updated; and e) how data gaps will be identified.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; data collection described in Section 5.1 (page 33), and Appendix C includes data received. Project database provided as Appendix E. Section 7.3 (pages 59-60) and Section 7.4 (pages 60) describe how data will be updated as well as current and ongoing monitoring. The SWRP will be posted on the MRSWMP and IRWMP websites for access to the public, as described in Section 7.3 (pages 59-60).

IDENTIFICATION AND PRIORITIZATION OF PROJECTS
(GUIDELINES SECTION VI.D)
Y 29. Plan identifies opportunities to augment local water supply through groundwater recharge or storage for beneficial use of storm water and dry weather runoff.
10562(d)(1)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 6.2 (pages 47-48) describes project identification and Appendix E contains project opportunities for water supply augmentation. Specific projects to augment water supply also included in the Water Recovery Study, provided as Appendix D.

30. Plan identifies opportunities for source control for both pollution and dry weather runoff volume, onsite and local infiltration, and use of storm water and dry weather runoff. 10562(d)(2)
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 585, Packet Page 685 A - 8
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 6.2 (pages 47-48) describes project identification and Appendix E contains project opportunities for source control, infiltration, and use for pollution and dry weather runoff volume. Stormwater and dry weather runoff use project opportunities also included in the Water Recovery Study, provided as Appendix D.

IDENTIFICATION AND PRIORITIZATION OF PROJECTS
(GUIDELINES SECTION VI.D)
Y 31. Plan identifies projects that reestablish natural water drainage treatment and infiltration systems, or mimic natural system functions to the maximum extent feasible.
10562(d)(3)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 6.2 (pages 47-48) describes project identification and Appendix E contains project opportunities for reestablishing natural water drainage treatment and infiltration systems or mimicking natural system functions to the Y 32. Plan identifies opportunities to develop, restore, or enhance habitat and open space through storm water and dry weather runoff management, including wetlands, riverside habitats, parkways, and parks. 10562(d)(4)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 6.2 (pages 47-48) describes project identification and Appendix E contains project opportunities for developing, restoring, or enhancing habitat and open space through stormwater and dry weather runoff management.

33. Plan identifies opportunities to use existing publicly owned lands and easements, including, but not limited to, parks, public open space, community gardens, farm and agricultural preserves, school sites, and government office buildings and complexes, to capture, clean, store, and use storm water and dry weather runoff either onsite or offsite. 10562(d)(5),
10562(b)(8)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 5.3.2 (pages 36-37) describes how publicly owned project opportunity locations were identified. Section 6.2 (pages 47-48) describes project identification, and Appendix E contains project opportunities for utilizing publicly owned lands and easements to capture, clean, store, and use stormwater and dry weather runoff.

34. For new development and redevelopments (if applicable):

Plan identifies design criteria and best management practices to prevent storm water and dry weather runoff pollution and increase effective storm water and dry weather runoff management for new and upgraded infrastructure and residential, commercial, industrial, and public development.
10562(d)(6)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 4.2.1 (pages 27-28) describes required design criteria for best management practices. Section 6.2 (pages 47-48) describes project identification. The MRSWMP Stormwater Technical Guide for Low Impact Development (MRSWMP, 2015) provides design criteria for new and redevelopment best management practices.

References to the Technical Guide are provided in Sections 4.2.1 (page 30) , 6.1.3 (page 47), and 7.4 (page 60).

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 586, Packet Page 686 A - 9
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
Y

35. Plan uses appropriate quantitative methods for prioritization of projects.
(This should be accomplished by using a metrics-based and integrated evaluation and analysis of multiple benefits to maximize water supply, water quality, flood management, environmental, and other community 10562(b)(2)
References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 5.4 (pages 42-45) describes metrics-based multi-benefit evaluation, Section 6.2 (pages 47-48) describes project prioritization. Results are provided in Appendix E.

IDENTIFICATION AND PRIORITIZATION OF PROJECTS
(GUIDELINES SECTION VI.D)
Y

36. Overall:

Plan prioritizes projects and programs using a metric-driven approach and a geospatial analysis of multiple benefits to maximize water supply, water quality, flood management, environmental, and community benefits within the watershed.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 5.2 (pages 34-35) describes models and tools evaluated for approach, Section 5.3 (pages 35-42) describes geospatial project identification and classification method, Section 5.4 (pages 42-45) describes metrics-based multi-benefit evaluation, and Section 6.2 (pages 47-48) describes project prioritization. Results are provided

37. Multiple benefits:

Each project in accordance with the Plan contributes to at least two or more Main Benefits and the maximum number of Additional Benefits as listed in Table 4 of the Guidelines. (Benefits are not counted twice if they apply to more than one category.) References:

IMPLEMENTATION STRATEGY AND SCHEDULE
(GUIDELINES SECTION VI.E)
Y 38. Plan identifies resources for Plan implementation, including: 1) projection of additional funding needs and sources for administration and implementation needs; and 2) schedule for arranging and securing Plan implementation financing.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 7.1 (page 53), summarizing resources for implementation; and Section 7.2.6 (pages 55 -57), which describes the projected funding needs and schedule for prioiritized proejcts.

Y 39. Plan projects and programs are identified to ensure the effective implementation of the storm water resource plan pursuant to this part and achieve multiple benefits.
10562(d)(8)
References:

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 587, Packet Page 687 A - 10
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
Y 40. The Plan identifies the development of appropriate decision support tools and the data necessary to use the decision support tools. 10562(d)(8) References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 7.1.2 (page 53) describes that funding for implementation of the seven projects included in this SWRP will be obtained by the project sponsor. As included in Section 7.2.1 (pages 53-54), projects and/or project opportunities listed in the final SWRP may be included as part of IRWMP project lists for project implementation, as appropriate. Decision support tools are available through the IRWMP project prioritization process, and have been included in Appendix I of the Monterey Peninsula Region Stormwater Resource Plan. Additional considerations for project implementation are included in Section 7.2.2 (page 54).

IMPLEMENTATION STRATEGY AND SCHEDULE
(GUIDELINES SECTION VI.E)
Y

41. Plan describes implementation strategy, including:
a) Timeline for submitting Plan into existing plans, as applicable; b) Specific actions by which Plan will be implemented;
c) All entities responsible for project implementation; d) Description of community participation strategy;
e) Procedures to track status of each project;
f) Timelines for all active or planned projects;
g) Procedures for ongoing review, updates, and adaptive management of the Plan; and h) A strategy and timeline for obtaining necessary federal, state, and local permits.

References:

42. Applicable IRWM plan:

The Plan will be submitted, upon development, to the applicable integrated regional water management (IRWM) group for incorporation into the IRWM plan.
10562(b)(7)
References:

Y 43. Plan describes how implementation performance measures will be tracked.

References:

EDUCATION, OUTREACH, PUBLIC PARTICIPATION
(GUIDELINES SECTION VI.F)
Y 44. Outreach and Scoping:

Community participation is provided for in Plan implementation. 10562(b)(4) References:

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 588, Packet Page 688 A - 11
Storm Water Resource Plan Self-Certification Checklist
Revised: 30 July 2019
Y

45. Plan describes public education and public participation opportunities to engage the public when considering major technical and policy issues related to the development and implementation.

References:

46. Plan describes mechanisms, processes, and milestones that have been or will be used to facilitate public participation and communication during development and implementation of the Plan.

References:

EDUCATION, OUTREACH, PUBLIC PARTICIPATION
(GUIDELINES SECTION VI.F)
Y 47. Plan describes mechanisms to engage communities in project design and implementation.

References:

Y 48. Plan identifies specific audiences including local ratepayers, developers, locally regulated commercial and industrial stakeholders, nonprofit organizations, and the general public.

References:

Y 49. Plan describes strategies to engage disadvantaged and climate vulnerable communities within the Plan boundaries and ongoing tracking of their involvement in the planning process.

References:

Y 50. Plan describes efforts to identify and address environmental injustice needs and issues within the watershed.

References:

Located in the Monterey Peninsula Region Stormwater Resource Plan, prepared by Geosyntec Consultants, EOA, Inc., and Denise Duffy & Associates, September 28, 2018, revised final July 30, 2019; Section 8.3.1 (page 62), and Section 8.3.4 (page 63). Projects that provide enhancement to DACs were identified and scored utilizing the metrics based multi-benefit evaluation described in Section 5.4.1 (pages 42-45) and Table 10 (pages 44-45).

Y 51. Plan includes a schedule for initial public engagement and education.

References:

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 589, Packet Page 689 A screenshot of the electronically signed SWRP Self-Certification is provided below. The electronically signed SWRP Self-Certification is provided in a separate file titled “SWRP Self Certification FINAL (09-21-18) PS Electronic Signature.pdf” attached to this compiled SWRP package.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 590, Packet Page 690 State Water Board Response to Comments Matrix August 27, 2019

The Monterey Peninsula Stormwater Resource Plan (SWRP) was edited from the September 28, 2018 version to address comments received from the State Water Board on December 4, 2018 (see “State Water Board Comment” column) and February 26, 2019 (see “DFA [State Board] Comment #2”). The State Water Board provided final comment via e-mail on June 11, 2019 (see final page of this section). A summary of all revisions is provided in the table below. The final SWRP (dated July 30, 2019) is posted to: http://montereysea.org/stormwater-resource-plan/.

Minor final changes to the final SWRP were completed in response to final comments from the State Water Board on August 27, 2019. This resulted in replacement of five pages of the SWRP and a new project database on August 27, 2019.

SWRP
Section State Water Board Comment Project Team Response to Comment – Round 1 DFA [State
Board]
Comment #2
Project Team Response
to Comment – Round 2
Section 5.3.2,

Page 36 ends

Provide a summary for each
project identified as publiclyowned parcels.

Monterey Peninsula Stormwater Resource
Plan (SWRP) Section 5.3.2 describes the
methodology to identify opportunities for
potential projects. The opportunities identified
are included in Attachment E (Project
Database). These are opportunities (not
developed projects) and as such, additional
information and project design has not been
developed beyond what is provided in
Attachment E. The seven projects identified as
part of the SWRP (i.e., those for which project
concepts were developed), which are located
on publicly-owned parcels, do have summary
descriptions in the SWRP; these are provided
in SWRP Section 6.3. No Revision Made.

Noted. In
addition, in
Attachment E,
please add a
column to
identify which
projects are
"source control"
projects, i.e.,
treat and
infiltrate storm
water locally
(LID).

Attachment E (excel
spreadsheet) has been
edited to include a
column that identifies
which projects treat or
infiltrate stormwater
locally (see Appendix E -
MontereyPeninsulaSWRP
ProjectDatabase (3-18-
19).xlsx, column AF of
“COMBINED DB” tab).

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 591, Packet Page 691 State Water Board Response to Comments Matrix August 27, 2019

SWRP
Section State Water Board Comment Project Team Response to Comment – Round 1 DFA [State
Board]
Comment #2
Project Team Response
to Comment – Round 2
Section 7.2.6,

Page 55 ends

The description of the
implementation strategy is
weak. You should provide
estimated timelines depending
on each agency's priorities,
funding availabilities, status of
project (i.e., how far along the
concepts are).

A table indicating the status and potential
timeline for each project concept has been
added to SWRP Section 7.2.6.

The table needs
to show
proposed
timelines for
each project:
timeline for
funding, design,
and construction.

Table 12 has been edited
to include proposed
timelines for funding,
design completion, and
construction.

Section 7.3,

Page 56 ends

Have the website and clear
procedures been setup? If so,
provide a link.

Footnotes that link to the MRSWMP website
(i.e. http://montereysea.org/stormwaterresource-plan/) and the IRWMP website (http://www.mpirwm.org/Pages/default.aspx)
have been added to SWRP Section 7.3. Clear
procedures for adding projects have been
provided on the MRSWMP website.

Noted. No additional edit
needed.

Appendix E
All benefits must be quantified,
and the estimated quantity must
be provided (not just the range
that was used for the scoring
matrix) as well as the method
used to obtain the number.

All benefits have been quantified in Appendix
E, database “Appendix E – Monterey
PeninsulaSWRP ProjectDatabase (12-18-
18).xlsx”. These are provided in columns Q
through AD. The method is described in
SWRP Section 5.4.1 and Table 10.

Noted. No additional edit
needed.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 592, Packet Page 692 State Water Board Response to Comments Matrix August 27, 2019

SWRP
Checklist
State Water
Board
Comment
Project Team Response to
Comment – Round 1 DFA [State Board] Comment #2 Project Team Response to Comment – Round 2 Item #27,
Page A-7
Plan must
include a
narrative of
how each
project and
program will
benefit the
environment
and/or
community,
with some type
of quantitative
measurement.

The following statement (in italics
below) was added to Item #27, Page
A-7 of the SWRP Checklist
(Appendix A): “…including
environmental and community
benefits. Specifically, as
summarized on pages 43-44 and in
Table 10, project opportunities that
“re-establish natural water
drainage systems or develop,
restore, or enhance habitat and
open space” received a score of 2
for providing environmental
benefits; and project opportunities
that provide “community
enhancement” or “enhancement to
DAC” received a score of 2 (each)
for providing community benefits.

Full project database,…”
A narrative (specifically explaining
the benefits to the environment and
community, with some type of
quantitative measurement) must be
provided at least for each selected
project that has claimed an
environmental or community
benefit. Without this, we cannot
provide concurrence for the SWRP.

This could be done by expanding
the project descriptions in Section

6.3. Narrative has been provided in the
project descriptions in Section 6.3
regarding whether the project claims
an environmental or community
benefit per the metrics-based multibenefit assessment, and explaining the benefit assessment.

The following statement (in italics
below) was added to Item #27, Page
A-7 of the SWRP Checklist
(Appendix A): “A narrative
explaining benefits is included for
top projects in section 6.3 (pages
50-52).”
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 593, Packet Page 693 State Water Board Response to Comments Matrix August 27, 2019

SWRP
Checklist
State Water
Board
Comment
Project Team Response to
Comment – Round 1 DFA [State Board] Comment #2 Project Team Response to Comment – Round 2 Item #34,
Page A-8
Plan says that
no new
development or
re-development
projects have
been identified.

This does not
mean one won't
be submitted
later.

The following statement (in italics
below) was added to the last
sentence of SWRP Section 6.1.3 on

Page 47 ends

projects were identified as part of
this plan, although these projects
could be amended to the SWRP in
the future.”
Unless it is impossible for any new
development or re‐development
projects to be ever implemented in
the SRWP area (and in this case you
would need to explain why), there
needs to be a section about design
criteria and types of BMPs to be
used for such projects, as
recommended by local guidelines,
ordinances. Providing references to
such documents is acceptable.

Please see the attached example
from another SWRP. Again, without
this, we cannot concur with the
SWRP.

A reference to the MRSWMP
Stormwater Technical Guide for
Low Impact Development
(MRSWMP, 2015), which provides
design criteria and types of BMPs to
be used for new development or redevelopment projects, has been added to Sections 4.2.1, 6.1.3, and

7.4. The following statement (in italics
below) was added to Item #34, Page
A-8 of the SWRP Checklist
(Appendix A): “The MRSWMP
Stormwater Technical Guide for
Low Impact Development
(MRSWMP, 2015) provides design
criteria for new and redevelopment
best management practices.

References to the Technical Guide
are provided in Sections 4.2.1 (page
30) , 6.1.3 (page 49), and 7.4 (page
60).”
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 594, Packet Page 694 State Water Board Response to Comments Matrix August 27, 2019

SWRP
Checklist
State Water
Board
Comment
Project Team Response to
Comment – Round 1 DFA [State Board] Comment #2 Project Team Response to Comment – Round 2 Item #40,
Page A-9
We cannot see
decision
support tools
identified to
implement the
projects within
the plan. These
references are
pointing to the
vague
implementation
strategy.

The statement in Item #40, Page A9 of the SWRP Checklist (Appendix A), “Section 7.2 (pages 53-56),
Section 7.3 (pages 56-57), and
Section 7.4 (page 57)” was replaced
with the following: “Section 7.1.2
(page 53) describes that funding for
implementation of the seven
projects included in this SWRP will
be obtained by the project sponsor.

As included in Section 7.2.1 (pages
53-54), projects and/or project
opportunities listed in the final
SWRP may be included as part of
IRWMP project lists for project
implementation, as appropriate.

Decision support tools are available
through the IRWMP project
prioritization process. Additional
considerations for project
implementation are included in
Section 7.2.2 (page 54).”
The decision support tools
mentioned (from IRWMP) must be
inserted into this section. The tools
we are looking for are those that can
be used to size BMPs, quantify
benefits, measure performance,
project tracking, models developed,
etc. (i.e., assess projects that are
candidate for insertion into the
SWRP).

The decision support tools
mentioned (from the IRWMP
process) have been inserted into
Appendix I and are referenced in
section 7.2. Additionally, references
to the incorporation of the SWRP
into the IRWMP and the IRWMP
goals and objectives have been
updated throughout the text.

The following statement (in italics
below) was added to Item #40, Page
A-9 of the SWRP Checklist
(Appendix A): “Decision support
tools are available through the
IRWMP project prioritization
process, and have been included in
Appendix I of the Monterey
Peninsula Region Stormwater
Resource Plan.”
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 595, Packet Page 695 State Water Board Response to Comments Matrix August 27, 2019 Comments received June 11, 2019, with clarifying comments received June 20, 2019, and responses to comments:

SWRP/
Checklist
Section
State Water Board
Comment (June 11, 2019)
State Water Board Clarifying Instructions (June 20,
2019)
Project Team Response to
Comment
Section

7.2 “Regarding the first comment
(section 5.3.2, page 36): the
SWRP should include
language that clarifies that the
seven projects are part of the
SWRP, and more importantly,
that the rest of the
opportunities (listed in
Appendix E) would need to be
further developed prior to
inclusion into the SWRP.”
“On page 31 of the SWRP guidelines (Section VI, E, 1 and 2), it says:
“A Storm Water Resource Plan should identify the resources that the participating entities are committing for
implementation of the Plan. The Plan should include the following items to ensure its effective implementation. (Wat. Code, § 10562, subd. (d)(8).):
a. Projection of additional funding needs and
sources for administration and project implementation
needs, above and beyond the needs of the existing storm water management plans and/or integrated regional water management plans; and
b. Schedule for arranging and securing Plan
financing for project implementation, including
identification of phased Plan and/or project
implementation.”
One page 32, it says
The Storm Water Resource Plan should identify the
following implementation and scheduling components:
- Timelines for all active or planned project
components and identification of the institutional
structure that will ensure Plan implementation;”
Through clarifying comment from
the State Water Board, the
comment is referring to the
requirement to provide funding
and schedule estimates for
identified SWRP projects and
project opportunities. Section 7.2.6
of the SWRP is now titled
“Potential Timelines and Cost
Estimates for Implementing
Identified Project Opportunities,”
and includes estimates of project
cost and schedule for the projects
(or representative projects)
anticipated to be implemented
between 2020 – 2040, should
funding be available and secured.

All project opportunities identified
in Appendix E are considered
included in and part of the SWRP;
cost ranges and timeline have been
provided for each project.

Checklist
Item #27,
page A-7
Regarding Item #27, page A-7:
for the selected projects
(section 6.3), you need to
explain what exact community
benefit is provided for each
project. For example, what
does “enhancement to DAC”
mean? You need to provide a
description for each benefit.
n/a The description is provided on
page 43 of the SWRP. A
reference to section 5.4.1, page 43,
has been provided in the Checklist.

The description has been added to
each project in Appendix E. DACs
in the planning area are shown in
the new Figure 5.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 596, Packet Page 696

APPENDIX B
TAC Meeting Summaries

EXHIBIT A
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 597, Packet Page 697 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Kick-off Meeting
Tuesday, September 12, 2017
1 pm – 3 pm
Conference Call
Phone: 1-855-266-3436 / Access Code: 954784
AGENDA
MEETING OBJECTIVES:
• Brief TAC members on the project purpose, background, approach, and schedule. • Review and approve TAC member list.
• Solicit TAC input on specific upcoming project submittals (Detailed Project Schedule, Stormwater Resource Plan Outline, Stormwater Resource Planning Area Description Memo, Approach to Addressing Water Quality, and Stakeholder Outreach Plan). 1:00 pm 1. Welcome/Introductions Jeff Condit
(Monterey One Water)
1:10 pm 2. Review of TAC member list, roles and responsibilities Action: Approve List of TAC Members
Jill Bicknell
(EOA)
1:20 pm 3. Overview of Project Purpose and Background
• Purpose of Stormwater Resource Plan
• Description of Project Area Watersheds
• Previous and Current Planning Efforts
• Water Recovery Study
Jeff Condit/ Kelly Havens
(Geosyntec)
1:45 pm 4. Project Approach
• Scope of Work
• Schedule
Action: Provide input on project approach. Review Project Detailed Schedule.

Kelly Havens
2:15 pm 5. Stormwater Resource Plan (SWRP) Contents
Action: Review Draft SWRP Outline, Planning Area
Description, and Approach to Addressing Water Quality
Kelly Havens
Appendix B: TAC Meeting Summaries B-1
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 598, Packet Page 698 2:35 pm 6. Stakeholder Involvement
Action: Review Draft Stakeholder Outreach Plan
Vishakha Atre
(EOA)
2:50 pm 7. Review Action Items Jill Bicknell
3:00 pm 8. Adjourn
Appendix B: TAC Meeting Summaries B-2
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 599, Packet Page 699 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Kick-off Meeting
Tuesday, September 12, 2017
1 pm – 3 pm
MEETING SUMMARY (Grant Task 2.3)
Participants – Attendance list attached.

1. Welcome/Introductions
Jeff Condit (Monterey One Water) informed attendees that the purpose of today’s meeting is to provide an overview of the Stormwater Resource Plan (SRP) process, approach, and schedule, and obtain initial feedback for several key deliverables. Attendees introduced themselves.

2. Review of TAC Member List, Roles and Responsibilities Jill Bicknell (EOA) reviewed the draft TAC Member List with the TAC. Attendees had no comments on the list and approved it for submittal to the Grant Manager.

3. Overview of Project Purpose and Background
Jeff and Kelly Havens (Geosyntec) provided an overview of the grant, SRP development process, and information on the project boundaries and watershed areas. The MRWPCA (now called Monterey One Water), facilitator of the Monterey Regional Stormwater Management Program (MRSWMP), received a Prop 1 Grant to prepare a SRP for the Monterey Peninsula Region. The total grant amount received is $358,716. The City of Monterey’s Neighborhood Improvement Program (NIP), the Monterey Peninsula Water Management District, and MRSWMP program are providing the required 50% match. Grant deliverables include the following:
 Monterey Regional Water Recovery Study which will examine the feasibility of establishing a Peninsula-wide water recovery and reclamation system
 SRP for the Monterey Peninsula IRWMP
 GIS-based screening analysis to identify and prioritize potential projects  Approximately 30% design for the top prioritized project. The goal is to apply for Prop 1 Implementation Funding in 2018
 10% Conceptual Designs for the next seven prioritized projects The MRSWMP Subcommittee will provide oversight of the SRP, and input will be provided by the TAC and a stakeholder group. Next week, Geosyntec will send out a data request to these groups to Appendix B: TAC Meeting Summaries B-3
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 600, Packet Page 700 collect information on planned projects. Generally, private regulated projects will not be included in the prioritized projects list; however, public-private partnership projects may be included.

4. Project Approach
Kelly described the grant tasks and schedule for completion, including the timeline for TAC meetings, key deliverables, and anticipated review periods.

5. SRP Contents
The project team has prepared a draft SRP Outline for submittal to the Grant Manager. It was emailed to the TAC prior to today’s meeting. Kelly described the SRP contents and provided an overview of the Water Recovery Study. She asked attendees which acronym they prefer using: SRP or SWRP. TAC members did not express a strong preference; however, the same acronym should be used throughout the process and all documents.

Draft technical memos on the SRP Planning Area Description and the Approach to Addressing Water Quality were also sent to the TAC for review. Comments are due by September 25.

6. Stakeholder Outreach and Engagement Plan
Vishakha Atre (EOA) provided an overview of the Stakeholder Outreach and Engagement Plan.

Stakeholders will be solicited from Monterey Peninsula Integrated Regional Water Management Plan (IRWMP) stakeholders list. The TAC reviewed the Stakeholder Outreach and Engagement Plan and provided the following feedback:
 Include additional outreach for engaging disadvantaged communities (DACs). Jill Bicknell (EOA) said that while efforts will be made to involve DACs in the Stakeholder Group, it is likely that they will be more involved if projects are identified within their communities. Additional efforts will be made to engage DACs after the potential projects are identified. Jeff Krebs (City of Monterey) and Scott Ottmar (City of Seaside) said that they will provide contact information for DACs within their jurisdictions.
 Involve stakeholders from the Monterey Regional Water Recovery Study with the SRP Stakeholder Group. Add a paragraph about the interaction between the SRP Stakeholder Group and the Water Recovery Stakeholder Group to the Stakeholder Outreach and Engagement Plan.
 Include a paragraph about coordination with the Monterey Regional Water Recovery Study.  Jeff Condit noted that he will review the stakeholder contact list and provide updates.

7. Action Items:

Action items are summarized in the following table:

Appendix B: TAC Meeting Summaries B-4
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 601, Packet Page 701 Action
Item
Description Responsibility Due Date
1 Prepare Draft TAC meeting summary for TAC review Consultant team 9/19/17 2 Issue request for projects and data to stakeholders Consultant team 9/22/17 3 Schedule and prepare for first stakeholder meeting Consultant team 10/17/17 4 Add a paragraph about coordinating with the
Monterey Regional Water Recovery Study
Stakeholders to the SRP Stakeholder Outreach Plan
Consultant Team 9/25/17
5 Provide comments on the following documents:
 Draft Detailed Schedule
 Draft Detailed SRP Outline
 Draft Stakeholder Outreach Plan
 Draft Memo on Planning Area Description,
Map, and Boundaries
 Draft Memo on Description of Approach
for Addressing Water Quality
TAC 9/25/17
5 Review and update the IRWMP Stakeholder List Jeff Condit 9/30/17 6 Send DAC contacts for the City of Seaside Scott Ottmar 9/30/17 7 Send DAC contacts for the City of Monterey Jeff Krebs 9/30/17 8 Send Figure 1 of the Planning Area Description to the TAC
Jill Bicknell 9/13/17
Next Meeting:

November 2, 2017, 12:30-2:30 pm, at Monterey One Water Conference Room Appendix B: TAC Meeting Summaries B-5
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 602, Packet Page 702 Technical Advisory Committee (TAC) Kick-off Conference Call September 12, 2017
Attendance List
Name Organization
Scott Ottmar City of Seaside
Jeff Krebs City of Monterey
Tom Harty County of Monterey Resource Management Agency Jeff Condit Monterey One Water
Alison Imamura Monterey One Water
Larry Hampson Monterey Peninsula Water Management District Dominic Roques Regional Water Quality Control Board, Central Coast Region Sarah Hardgrave Big Sur Land Trust
Jill Bicknell EOA, Inc. (consultant to Monterey One Water) Vishakha Atre EOA, Inc. (consultant to Monterey One Water) Kelly Havens Geosyntec (consultant to Monterey One Water) Denise Duffy Denise Duffy & Assoc. (consultant to Monterey One Water) Diana Staines Denise Duffy & Assoc. (consultant to Monterey One Water) Rachid Ait-Lasri State Water Resources Control Board, Div. of Financial Assistance Appendix B: TAC Meeting Summaries B-6
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 603, Packet Page 703 engineers | scientists | innovators
Monterey Peninsula Stormwater
Resource Plan TAC Kick-Off Call
Jeff Condit, EOA,
Inc., and Geosyntec
Consultants
9/12/2017
1 – 3 PM
engineers | scientists | innovators
TAC Kick-Off Call Agenda
engineers | scientists | innovators
Welcome and Introductions
Today’s Presenters:
Jeff Condit – Stormwater Program Manager,
MRSWMP; SRP Project Manager
Jill Bicknell – Managing Engineer, EOA, Inc.; TAC
Facilitator/Technical Advisor
Kelly Havens – Senior Engineer, Geosyntec
Consultants; Project Manger/ Technical Lead
Vishakha Atre – Senior Engineer, EOA, Inc.;
Stakeholder Outreach Lead (with Denise Duffy
& Associates)
engineers | scientists | innovators
TAC Member Roles and List
Actions for Today:
• Review and Approve TAC Member List
• Review TAC Member Responsibilities:
– Provide technical guidance to Monterey One Water and
its consultants on the development of the Stormwater
Resource Plan
– Review, provide technical input to, and approve specific grant deliverables
Jeff Condit, Program Manager
Monterey Regional Stormwater Management Program
SB985 (2014)
Requires a Stormwater Resource Plan (SRP) as a
condition of receiving funds for stormwater and dry
weather runoff capture projects from any bond
approved by voters after January 2014.
An SRP represents a collaborative watershed-based
planning document that views stormwater and dry
weather runoff as a resource, prioritizing projects
based on regional multi-benefit objectives, while
promoting water quality protection consistent with
individual MS4 NPDES permits.

Appendix B: TAC Meeting Summaries B-7
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 604, Packet Page 704 Prop 1 Planning Grant
The State Water Resources Control Board allocated
$20m of the $200m Prop 1 Stormwater Grant Program
toward planning grants intended for the development
of SRPs.
The MRWPCA, facilitator of the Monterey Regional
Stormwater Management Program, was requested to
serve as Lead Agency toward the Prop 1 Grant
The MRWPCA was awarded $358,716 Prop 1 Planning
Grant toward pursuit of a regional SRP.

Prop 1 Planning Grant
Due to a Prop 1 Planning Grant 50% match requirement, the $358,716 grant is part of a $717,432 effort. Local match includes:
The City of Monterey’s Neighborhood Improvement Program (NIP) allocated $85,000 to analyze opportunities and
constraints of stormwater capture regionally
The Monterey Peninsula Water Management District
awarded an $85,000 match toward this study of regional
capacity
The MRSWMP program spent considerable staff time toward the development of a quantitative modeling program that will assist with Planning Grant requirements
The MRSWMP Program Manager and partner Staff time
Partner Engagement
MRSWMP Subcommittee
Technical Advisory Committee (TAC)
Stakeholder Outreach
Build on IRWMP stakeholder process
Include outreach to DACs
Public Outreach
SRP Objectives
From SRP Guidelines (p. 17):
“Stormwater management on a watershed basis
provides for a combination of stormwater
management objectives and multiple benefits
throughout the watershed or sub-watershed”
“The Plan must discuss how its objectives and projects fit into the broader water management goals of the
applicable IRWM Plan.”
SRP Objectives
Water Quality
Water Supply
Flood Management
Environmental
Community
Grant Deliverables
Monterey Regional Water Recovery Study
Examine the feasibility of establishing a Peninsula-wide water recovery and reclamation system
Stormwater Resource Plan for the Monterey Peninsula
IRWMP
GIS-based Screening Analysis to identify and prioritize potential projects
For the top prioritized project, an approximately 30% design, a CEQA Initial Study, and a Project
Implementation Plan
Goal of Prop 1 Implementation Funding in 2018
10% Conceptual Designs for the next seven prioritized projects
Appendix B: TAC Meeting Summaries B-8
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 605, Packet Page 705 Incorporation into the IRWMP
Upon development, [a Storm Water Resource Plan
must] be submitted to any applicable integrated
regional water management group. Upon receipt, the
Integrated Regional Water Management group shall
incorporate the [Storm Water Resource Plan] into its
integrated regional water management plan. (Wat.

Code, § 10562, subd. (b)(7).)
Incorporation into the IRWMP
The SRP must discuss how its objectives and projects
fit into the broader water management goals of the
applicable IRWM plan.
For the purposes of receiving project implementation
funding, submittal of a Storm Water Resource Plan to
the applicable IRWM group (for further incorporation
into an existing IRWM plan) fulfills the public agency’s requirement for “incorporation.”
engineers | scientists | innovators
Planning Region Watersheds
engineers | scientists | innovators
Identification of Planned Projects
• E-mail request to cooperating
entities, interested parties,
and stakeholders
• Planned projects:
– Location
– Drainage Area
– Facility Type
Stormwater Technical Guide for
Low Impact Development
MRSWMP
engineers | scientists | innovators
Scope of Work
• Grant Task 1: Project Administration/Management
• Grant Task 2: Technical Advisory Committee
• Grant Task 3: Data Collection and Watershed
Identification
• Grant Task 4: Stormwater Resource Plan
Development
– Includes project identification and prioritization
– Includes conducting Water Recovery Study
• Grant Task 5: Planning and Design
• Grant Task 6: Stakeholder Outreach
engineers | scientists | innovators
Project Schedule
Grant Item # RFP Task # Description / Submittal Start Date Critical Due Date Estimated Completion Team Lead Start Date Anticipated Meeting/ Call Date (Week) First Draft 11 Project Administration/Management 6/27/2017 12/31/2018

1.2 1.1 Meetings/Notification of Upcoming Meetings, Workshops, and Trainings Jul-17 15 Days Prior to Event EOA/Geosyntec

1.1 Draft Detailed Project Schedule 6/27/2017 Jul-17 Geosyntec 7/21/2017

1.4 1.1 Status Review Meetings Jul-17 Ongoing Ongoing Geosyntec

21.1 Technical Advisory Committee (TAC) Jul-17

2.1 1.1 List of TAC Member, Roles, and Responsibilities 6/27/2017 Sep-17 EOA 8/18/2017

2.2 1.1 TAC Kick-off Call Sep-17 EOA 9/12/2017
Agenda for TAC Kick-Off Meeting EOA 8/28/2017
Notes/Action Items for TAC Kick-Off Meeting Sep-17 EOA 9/19/2017

1.3 1.1 Final Detailed Project Schedule Sep-17 Geosyntec

2.2 1.1 2
nd TAC Meeting (Methodology) Oct-17 EOA 10/30/2017
Agenda for 2nd TAC Meeting EOA 10/16/2017
Notes/Action Items and Sign-In Sheet for 2nd TAC Meeting EOA 11/6/2017

2.2 1.1 3rd TAC Meeting (Prioritized List of Projects) Jan-18 EOA 2/5/2018 Agenda for 3rd TAC Meeting EOA 1/22/2018
Notes/Action Items and Sign-In Sheet for 3rd TAC Meeting EOA 2/12/2018

2.2 1.1 4th TAC Meeting (Administrative Draft SWRP) May-18 EOA 4/30/2018 Agenda for 4th TAC Meeting EOA 4/16/2018
Notes/Action Items and Sign-In Sheet for 4th TAC Meeting EOA 5/7/2018

2.2 1.1 5th TAC Meeting (Public Draft SWRP) Aug-18 EOA 8/6/2018 Agenda for 5th TAC Meeting EOA 7/23/2018
Notes and Sign-In Sheet for 5th TAC Meeting EOA 8/13/2018

2.3 1.1 TAC Meeting Agendas, Meeting Notes, Sign-in Sheets, and Action Items Aug-17 Ongoing EOA 32 Data Collection and Watershed Identification Jul-17

3.1 2.1 Annotated List of Plans and Reports Nov-17 Geosyntec 8/22/2017 10/27/2017

3.1 2.1 Database of Planned Projects Nov-17 Geosyntec 9/6/2017 10/27/2017

3.1 2.1 Summary of Data Received Nov-17 Geosyntec 9/6/2017 10/27/2017

3.2 2.1 Planning Area Description, Map, and Boundaries Oct-17 Geosyntec 8/1/2017 8/31/2017

42.6 Stormwater Resource Plan Development Jul-17

4.1, 4.2 2.6 Detailed SRP Outline 9/30/2017 Geosyntec 8/25/2017

4.3 2.6 Description of Approach for Addressing Water Quality Oct-17 Geosyntec 9/1/2017

4.4.1 2.2.1 Technical Memo on Water Recovery Study Approach and Feasibility Criteria Nov-17 Geosyntec 8/1/2017 10/6/2017

4.4.2 2.4.1 Technical Memo on Modeling Tools and Methodologies (Project Metrics-Based Nov-17 Geosyntec 8/1/2017 10/6/2017

4.5 2.4.4 Results of Analysis, Prioritization, and Project Selection (Prioritized Projects Tec Feb-18 Geosyntec 11/1/2017 1/5/2018 Water Recovery Study Results Feb-18 Geosyntec 11/1/2017 1/5/2018

4.6.3 2.6 Technical Memo on Draft Implementation Strategy Oct-17 Geosyntec 9/1/2017 10/3/2017

4.7 2.6 Administrative Draft SRP and Draft Self-Certification Checklist 4/30/2018 Geosyntec 1/16/2018 3/2/2018

4.8 2.6 Public Draft SRP May-18 Geosyntec n/a

4.9 2.6 Summary of Comments Jul-18 Geosyntec 7/6/2018
Responses to Comments Jul-18 Geosyntec 7/13/2018

4.1 2.6 Final Draft SRP Aug-18 Geosyntec 8/10/2018

4.11 2.6 Final SRP and Signed Self-Certification 9/30/2018 Geosyntec

52.5 Planning and Design Jan-18

5.1 2.5.1 10% Level Designs - Seven Concepts Jun-18 Geosyntec 3/1/2018 5/4/2018

5.2 2.5.2 30% Level Design Sep-18 Geosyntec 3/1/2018 7/30/2018 CEQA Study Administrative Draft DD&A 3/1/2018 4/6/2018
CEQA Study Public Draft DD&A n/a
CEQA Study Final Draft DD&A n/a
63 Stakeholder Outreach, Education, and Public Participation Jul-17

6.1.1 3.1 Stakeholder Outreach Plan Oct-17 EOA 8/28/2017

6.1 3.1 Conduct Stakeholder Outreach Ongoing EOA
Data Request Emails (Reports, Plans, Projects, Data) EOA Data Submittal Deadline from Stakeholders EOA

6.1.3 3.2 Stakeholder Coordination on Planned Projects Oct-17 EOA

6.1.2 3.3 Stakeholder Meeting 1 (Introduction; Projects; Methodology) Oct-17 EOA 10/16/2017

6.1.2 3.3 Stakeholder Meeting 2 (Project Prioritization Results) Jan-18 EOA 1/15/2018 Prioritization Results to MRSWMP Jurisdiction EOA
Prioritization Results to Stakeholders EOA
Input on Prioritization Results from Jurisdictions/Stakeholders EOA Appendix B: TAC Meeting Summaries B-9
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 606, Packet Page 706 engineers | scientists | innovators
Water Recovery Study
• Examine the feasibility of Peninsula-wide recovery
and reclamation system along with:
– Possibilities for sources
– Water transport, treatment, storage
• Identify the Monterey Peninsula Water Recovery
Study Stakeholders
• Select a preferred project and alternate project
• Prepare CEQA Initial Study Checklist for the
preferred project
• Develop a Project Implementation Plan
engineers | scientists | innovators
Stormwater Resource Plan Contents
• SWRP vs. SRP
• Draft SWRP Outline
• Planning Area Description
• Approach to Addressing
Water Quality
engineers | scientists | innovators
Stakeholder Involvement
Goals
Provide information on SRP process and need for stormwater capture and treatment projects
Obtain input in identifying locations and types of projects Obtain feedback on initial prioritized list of potential projects Obtain comments on, and support for SRP
Obtain feedback on environmental justice needs and concerns associated with SRP implementation
Key Messages
Benefits of using stormwater as a resource
Need for stormwater capture and treatment projects
Purpose and content of the SRP
Process for identifying, assessing, and prioritizing stormwater capture and treatment projects
engineers | scientists | innovators
Stakeholder Involvement
Stakeholder Outreach Tasks
Task 1 - Stakeholder Group Formation - September 2017 Task 2 - Quarterly Updates - Beginning November 2017
Task 3 - Stakeholder Group Information Requests and Meetings Data request (plans, reports, data, & solicitation of projects) – September 2017
First meeting (feedback on prioritization methodology, potential projects ideas) - October 2017
Second meeting (feedback on Prioritized Project List) - January 2018
Feedback on draft SRP – May 2018
Task 4 - Public Workshop – June 2018
Task 5 - Stakeholder Involvement in Implementation of SRP and Completion of Projects
engineers | scientists | innovators
Review Action Items
• TAC: Review and comment by 9/25/17
– Detailed Schedule
– Detailed SRP Outline
– Stakeholder Outreach Plan
– Planning Area Description, Map, and Boundaries
– Description of Approach for Addressing Water Quality
• Consultant Team:
– Prepare Draft TAC Meeting Summary for TAC Review
– Issue Request for Projects and Data
– Schedule and Prepare for First Stakeholder Meeting
• Other Actions from the Meeting?
Appendix B: TAC Meeting Summaries B-10
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 607, Packet Page 707 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #2
Thursday, November 2, 2017
12:30 pm – 2:30 pm
Monterey One Water Conference Room
5 Harris Court, Building D, Monterey, CA
Call-in Option
Phone: 855-266-3436/ Access Code: 274784
AGENDA
MEETING OBJECTIVES:
• Update TAC members on SWRP task activity since the last TAC meeting, including Stakeholder Meeting #1.
• Discuss the relationship between the SWRP and the IRWMP. • Solicit TAC input on specific upcoming project submittals related to data review and project metrics-based analysis and quantification.
• Solicit TAC input on the Technical Memo on Water Recovery Study Methodology. 12:30 pm 1. Welcome/Introductions Jeff Condit
(Monterey One Water)
12:35 pm 2. Additions or Revisions to the Agenda Jill Bicknell (EOA) 12:40 pm 3. Update on SWRP Task Activity:
• Summary of Stakeholder Meeting #1
• Summary of deliverables submitted, under review, and
in progress
Action: Receive update on activity during Sept-Oct 2017.

Jill Bicknell / Kelly Havens
(Geosyntec)
12:55 pm 4. Discussion Topic – How does the SWRP fit into the IRWMP? Jeff Condit 1:10 pm 5. SWRP Task 3 – Data Review
• Annotated list of reviewed plans and reports
• Summary of data received (i.e., GIS data)
• Summary of planned projects received
Action: Provide input prior to review period for these
products.

Kelly Havens
Appendix B: TAC Meeting Summaries B-11
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 608, Packet Page 708 1:30 pm 6. SWRP Task 4 - Technical Memo on Project Feasibility, Identification, and Modeling Tools and Methodologies
(Project Metrics-Based Analysis and Quantification Technical Memo)
Action: Receive information on the technical memo and
provide input prior to the review period for this product.

Kelly Havens
2:00 pm 7. Discussion of Water Recovery Study Methodology Action: Provide input on draft Water Recovery Study
Methodology memo.

Kelly Havens
2:20 pm 8. Review Action Items Jill Bicknell
2:30 pm 9. Adjourn
Appendix B: TAC Meeting Summaries B-12
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 609, Packet Page 709 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #2
November 2, 2017
12:30 pm – 2:30 pm

MEETING SUMMARY
Participants – Attendance list attached.

1. Welcome/Introductions
Jeff Condit (Monterey One Water) welcomed TAC participants and informed them that the purposes of today’s meeting are to update the TAC on recent Stormwater Resource Plan (SWRP) activities; discuss the relationship between the SWRP and the Integrated Regional Water Management Plan (IRWMP); and solicit TAC input on upcoming SWRP submittals and the Water Recovery Study methodology. Attendees introduced themselves.

2. Additions/Revisions to the Agenda
Jill Bicknell (EOA) reported that there was one stakeholder comment on the SWRP that she would like to discuss with the TAC, under Agenda Item 3. There were no other additions or revisions to the agenda.

3. Update on SWRP Task Activity
a. Summary of Stakeholder Meeting #1 -- Jill reported that the first stakeholder meeting was well attended and that a lot of good input on the SWRP approach was received. Attendees were asked to provide information on potential projects and comments on the project prioritization methodology presentation by October 31.

Jill described a letter received from the Ohlone/Costanoan-Esselen Nation (OCEN), requesting consultation on projects affecting their aboriginal homelands. Jeff Krebs (City of Monterey) said that he can provide a GIS map of archeologically sensitive areas, but others pointed out that many burial sites are unknown, and consultations are typically required on major construction projects. Sarah Hardgrave (Big Sur Land Trust) said she has been looking at integrating a consultation process into the IRWMP, and she will reach out to the OCEN representative. b. Summary of deliverables submitted, under review, and in progress -- Kelly Havens (Geosyntec) provided a summary of the status of the grant deliverables and due dates for comments (see attached presentation).

Appendix B: TAC Meeting Summaries B-13
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 610, Packet Page 710

4. Discussion Topic – How does the SWRP fit into the IRWMP? There is a requirement in the State Water Board’s SWRP Guidelines that the final SWRP be incorporated into the local IRWMP. This does not have to be a complicated process, but there will be two separate lists of prioritized projects (prioritized using different criteria) and it is unclear how they would be integrated. Sarah mentioned that she is involved with a planning process for updating the IRWMP prior to the next IRWM implementation grant solicitation. It was suggested that members of the TAC involved with the IRWM group look at the scoring and prioritization criteria and consider whether any IRWM criteria should be added to the SWRP methodology.

5. SWRP Task 3 – Data Review
a. Annotated list of reviewed plans and reports – Kelly reported that a draft of this list will be provided to the TAC by November 10 and comments will be due on November 17. She would like input on any relevant reports that may be missing.
b. Summary of data received – Kelly provided an overview of the Excel spreadsheet sent to the TAC which summarizes data received/collected and reviewed. The following questions/comments were raised/provided:
• Are pollutant load estimate data included?
o Project Team is planning to use TELR load estimates. Will add this to the table. • Water District has aerial photos of the entire study area. o Project Team will request from AMBAG (Gina Schmidt)/ Monterey Peninsula Water Management District (MPWMD).
• New Carmel Area Wastewater District (CAWD) Boundary is needed. o Project Team will request from Drew Lander (CAWD).
• Project Team will request pump station locations from the cities. • Monterey County Resource Agency should have a map of known flood hazard areas. • Water quality monitoring data for MRSWMP and ASBS areas suggested to be added. o Project Team will try to obtain this data.
• Project Team asked if additional flow monitoring data available? o There may be data from Monterey County. Project Team will request. • Open space layer does not include County parks, regional parks, and conservation areas.

Sarah to provide an updated layer.

Kelly asked that any other comments be provided by November 10. The data deliverable will be submitted to the State on November 27.
c. Summary of planned projects received – Kelly reported that she has received projects from 15-20 entities so far. She will review them for potential overlap and missing data and then send to the TAC for review by November 10. Comments are due by November 17.

6. SWRP Task 4 – Technical Memo on Project Feasibility, Identification, and Modeling Tools and Methodologies
Appendix B: TAC Meeting Summaries B-14
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 611, Packet Page 711 Kelly reviewed the technical memo that was provided to the TAC on November 1. The discussion focused on Section 4, Project Identification and Classification, and Section 5, Project Metrics-Based Multi-benefit Evaluation. The following comments were provided:

Section 4:
• Decision to include Federal and State-owned parcels in project opportunity screening, such as the Presidio of Monterey and Fort Ord.
• There was a suggestion to look at undeveloped (vacant) private parcels as well. o Project team will look at private parcels that overlie water supply aquifers and/or could be used for capture and use water supply projects.
• What is the definition of “urbanized areas”? Decision was to use census designation.

Section 5:
• Decided to remove the scoring based on level of traffic (e.g., do not rank by street classification).
• Decided to lower the points given for projects based on quantity of water supply provided (e.g., 0 points for < 5 af/yr, 1 point for 5-10 af/yr, and 2 points for 10-20 af/yr, etc.). • There was a question regarding the ability to evaluate cost effectiveness at this stage. o No, but will evaluate this when selecting projects for conceptual design. • Suggestion to consider how projects that drain to ASBS will be ranked. • Consider whether flood control projects should be ranked by size of storm controlled (i.e., provide 1 point for projects that control the 5 or 10 year storm) or size of project.

7. Discussion of Water Recovery Study Methodology
Kelly reviewed the Water Recovery Study Approach Memorandum. The following comments were provided:
• The Pacific Grove dry weather diversion project is not permitted to divert wet weather flows.

The memo should describe the section of the ASBS that it covers. The amount of diversion is limited by pump capacity. Upgrades are planned to increase capacity. • There may be an issue with charging for diversion to sanitary sewer. • Complexity of permitting should be considered, e.g., DSOD permit for David Ave. reservoir. • Comment that we don’t want to exclude “dirty water” from recharge.

8. Review Action Items:

In addition to the summary of deliverables and reviews, the following actions will be completed by the consultant team prior to TAC Meeting #3:
• Conduct analyses for both the SWRP and the Water Recovery Study • Produce list of ranked SWRP projects
• Produce list of potential water recovery projects
• Hold Stakeholder Meeting #2
Next Meeting: To be scheduled (during the February 2018 timeframe) Appendix B: TAC Meeting Summaries B-15
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 612, Packet Page 712 Technical Advisory Committee (TAC) Meeting #2
November 2, 2017
Attendance List
Name Organization
Scott Ottmar City of Seaside
Jeff Krebs City of Monterey
Tom Harty County of Monterey Resource Management Agency Jeff Condit Monterey One Water
Alison Imamura Monterey One Water
Larry Hampson Monterey Peninsula Water Management District Dominic Roques Regional Water Quality Control Board, Central Coast Region Sarah Hardgrave Big Sur Land Trust
Jill Bicknell EOA, Inc. (consultant to Monterey One Water) Kelly Havens Geosyntec (consultant to Monterey One Water) Lisa Austin Geosyntec (consultant to Monterey One Water) Diana Staines Denise Duffy & Assoc. (consultant to Monterey One Water) Appendix B: TAC Meeting Summaries B-16
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 613, Packet Page 713 11/28/2017
1 Monterey Peninsula
Stormwater Resource Plan
TAC Meeting #2
2 November 2017
TAC Meeting #2 Agenda
 Update on SWRP Task Activity
 Discussion Topic – How does the SWRP fit into the IRWMP?  SWRP Task 3 – Data Review
 SWRP Task 4 – SWRP Technical Memo
 Discussion of Water Recovery Study Methodology Memo
 Review Action Items
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 2
Overview of Stakeholder Meeting #1
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 3
Summary of Grant Deliverables
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 4
Grant
Item # Description / Submittal Final Draft to State Submittal Status

1.3 Final Detailed Project Schedule 9/29/2017 Submitted

2.1 List of TAC Member, Roles, and Responsibilities 9/29/2017 Submitted

2.2 Agenda, Notes for TAC Kick-Off Meeting 10/7/2017 Submitted

2.2 Agenda, Notes for 2nd TAC Meeting 11/27/2017 In progress

3.1 Annotated List of Plans and Reports 11/27/2017 In progress

3.1 Database of Planned Projects Discussion In progress

3.1 Summary of Data Received 11/27/2017 In progress

3.2 Planning Area Description, Map, and Boundaries 10/14/2017 Submitted

4.1, 4.2 Detailed SRP Outline 9/29/2017 Submitted

4.3 Description of Approach for Addressing Water Quality 10/7/2017 Submitted

4.4.1 Technical Memo on Water Recovery Study Approach Discussion In progress

4.4.1/2 Technical Memo on Modeling Tools and Methodologies 11/27/2017 In progress

6.1.1 Stakeholder Outreach Plan 10/7/2017 Submitted

6.1.2 Stakeholder Meeting 1 Notes 2017 Q4 Report In progress

6.1 Public Education Goals 10/7/2017 Submitted
Discussion Topic
 How does the SWRP fit into the IRWMP?
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 5
Grant Task 3.1 – Data Review
 Annotated List of Plans and Reports (Deliverable)
In Progress (Geosyntec/ DD&A) – TAC draft on 11/10,
comments due back 11/17
 Summary of Data Received (Deliverable)
TAC draft sent out 10/30, comments due back 11/10
 Database of Planned Projects – Discussion
TAC draft sent 11/10, comments due back 11/17
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 6
Appendix B: TAC Meeting Summaries B-17
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 614, Packet Page 714 11/28/2017
2 Grant Task 4.1.1/4.1.1 – SWRP Methodology Memo
 Draft sent to TAC 11/1
 Outline:
Overview of Approach
Evaluation of Models and Tools
Project Identification and Classification
Project Metrics-Based Evaluation
Development of Project Concept Designs
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 7
Overview of Approach
 Identify Projects
 Screen and Classify Projects
 Score Projects using Metrics-Based Evaluation
 Prioritize Projects
 Detailed Quantification of Benefits for Concept Designs Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 8
Project Identification
 Planned Projects
Through project request
spreadsheet
 GIS Project Opportunity
Analysis
 Water Recovery Study –
specific project types
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 9
Identified Potential Projects
Planned
Projects
GIS
Analysis
Water
Recovery
Study
Project Classification
Project Multi-Benefit Evaluation
Conduct GIS-Based Opportunity Analyses:

1. Preliminary Feasibility Analysis

1. Public Parcels/ ROWs and Private Undeveloped Parcels

2. Not identified as potential Water Recovery Study Project

3. In some cases, a project may fall under multiple facility classifications
GIS Opportunity Analysis
 Publicly-owned parcels at least 0.1 acre, slope < 10% and Public ROWs
Screened for physical constraints
 Classified based on
Project Size: Parcel-based, Regional, ROW
Infiltration Feasibility: Hazardous, Partial, Full Infiltration Facility type
Drainage Area
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 11
Facility Types
 Water Recovery Project
 Green Infrastructure
 Non-GI Treatment Control
 Flood Control Facilities
 Hydromodification Control, Stream/Habitat Restoration  Public Use Area or Public Education Area
 Programmatic Stormwater Management Opportunity
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 12
Appendix B: TAC Meeting Summaries B-18
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 615, Packet Page 715 11/28/2017
3 Project Scoring
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 13
Project Component Benefit Addressed Points
0 12
Parcel area (For
Regional/Parcel-Based
Projects Only)
All < 1 acre 1 - < 4 acres > 4 acres
Street type (for ROW
Projects Only) All High Traffic Medium Traffic Low Traffic Location Slope All 7-10% 3-7% 0-3%
Catchment Runoff Rate All < 0.15 ft/yr (per TELR) or
unavailable in TELR

0.15 ft/yr < runoff < 0.40
ft/year (per TELR) > 0.40 ft/year (per TELR)
Infiltration feasible All No Partial or Not Applicable2 Yes Water Recovery Project Water Supply No -- Yes
Estimated Water Supply
Provided Water Supply 0 0 – 50 ac-ft/yr
50+ ac-ft/yr
100+ ac-ft/yr (+1 point)
200+ ac-ft/yr (+2 points)
Pollutant Loading Rate1 Water Quality <0.002 ton/ac-yr (per TELR) or unavailable in TELR

0.002 – 0.02 ton/ac-yr (per
TELR)
>0.02 ton/ac-yr (per
TELR)
Captures Runoff Ultimately
Draining to ASBS or 303(d)
listed waterbodies
Water Quality No Partial Yes
Removes pollutants from
stormwater Water Quality -- Non-Green Infrastructure Treatment Control Facilities Green Infrastructure3 Provides Flood Control
Benefits Flood -- -- Flood Control Facility
Re-establishes drainage,
develops, restores, or
enhances habitat
Environmental -- --
Stream Restoration,
Hydromodification
Control, or Habitat
Restoration Project
Provides community Community Public Use Area or Public
Project Prioritization, Selection, Concepts
 Prioritize Projects
Cooperating entities, interested parties, and stakeholders will have the option to review their scores and re-rank  Detailed Quantification of Benefits for Concept Designs Planning level hydrologic models anticipated to be developed for selected projects for concept design
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 14
Water Recovery Study Methodology Discussion
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 15
Conduct GIS-Based Opportunity Analyses:

1. Preliminary Feasibility Analysis

1. Public Parcels/ ROWs and Private Undeveloped Parcels

2. Not identified as potential Water Recovery Study Project

3. In some cases, a project may fall under multiple facility classifications
Project Identification – Lakes and
Reservoirs
 Planned Projects
 Opportunity Analysis
 Other lakes fed by:
 NHDplus stream, or
 Storm drain
 Potential to recover additional
runoff via:
 Percolation to a water supply aquifer
 Capture and use
 Diversion to sanitary sewer
 Optimization
 In-channel obstructions (e.g., rubber dams) not considered David
Avenue
Reservoir
Laguna
Grande
(Roberts
Lake)
Del
Monte
Lake
Lake
El
Estero
Project Identification – Storm Drain
Diversions to Sanitary Sewer
 Planned Projects
 M1W
 New Monterey urban diversion to
Reeside pump station
 Del Monte Blvd and Bay Ave
outfall diversion to Seaside pump
station
 CAWD
 Carmel Bay ASBS Project
 Opportunity Analysis
 Storm drains near sanitary
sewer pump stations
Coral St
Fountain Ave
Reeside
Monterey
Seaside
Fort Ord
Appendix B: TAC Meeting Summaries B-19
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 616, Packet Page 716 11/28/2017
4 Project Identification – Infiltration
to Aquifers
 GIS analysis to identify public/private parcels (and
ROW) feasible for infiltration into water supply
aquifers
 Aquifer locations
 Underlying soil type
 Infiltration hazards
 Depth to Groundwater
 Set-backs
 Undeveloped Parcels
 Other considerations
 Hydrogeological
 Riparian connectivity
Monterey Regional Water Recovery Study Technical Stakeholder Group Meeting 10/17/2017 19 Orange County Example
Project Identification – Capture and Use
 Planned projects
 Cistern water tank rebates
 GIS analysis to identify public and private
parks/fields
 Irrigated with potable water
 Proximity to storm drain
 Drainage area size, and characteristics
 Space/physical considerations; for
onsite storage capacity
Monterey Regional Water Recovery Study Technical Stakeholder Group Meeting 10/17/2017 20 Photo Credit: LADWP
Project Feasibility Characteristics
 Water supply
 Planning level cost
 Ease of implementation
Project Feasibility – Water Supply
 Categories: 10s, 100s, or
1,000s AFY
 Wet weather runoff
 Catchment hydrology
 Facility configuration and
drawdown
 % Capture = f (runoff coefficient,
DD time, unit basin storage)
 Potential water supply =
% Capture * Annual volume
 Dry weather runoff
 Extrapolate from available studies
and Pacific Grove ASBS project
data
Project Feasibility – Planning Level Cost
 Categories ($/AF)
 Analogy from previously
implemented and evaluated
projects
 Rough conceptual screening
cost estimates for subset of
projects
Project Feasibility – Ease of
Implementation
 Financing
 Project cost: $10Ks, $100Ks, $1Ms, $10Ms
 Seasonality vs. Demand
 Diversion to sanitary sewer during wet season?
(Yes, Partially, No)
 Complexity of Permitting
Appendix B: TAC Meeting Summaries B-20
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 617, Packet Page 717 11/28/2017
5 Summary of Work to be Completed Prior to TAC #3
 SWRP Project Identification, Metrics-Based Evaluation, and Prioritization
List of SWRP Projects - Scored and Ranked (Grant Task 4.5)  Water Recovery Study Project Identification, Evaluation Matrix of WRS Project Evaluation Findings
 Stakeholder Meeting #2 (Grant Task 6.1.2)
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 25
Goals for TAC Meeting #3
 Review identified projects
 Select seven projects for 10% concept design (2 of
which must be Water Recovery Study projects)
 Select one project for 30% design (Water Recovery
Study project)
 Discuss Implementation Strategy
Monterey Peninsula SWRP TAC Meeting #2 11/28/2017 26
Appendix B: TAC Meeting Summaries B-21
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 618, Packet Page 718 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #3
Thursday, February 22, 2018
10:00 am – 1:00 pm
Monterey One Water Conference Room
5 Harris Court, Building D, Monterey, CA
Call-in Option/GoToMeeting Link:

Phone: 855-266-3436/ Access Code: 81350
https://global.gotomeeting.com/join/774335109
AGENDA
MEETING OBJECTIVES:
• Update TAC members on SWRP task activity since the last TAC meeting. • Receive TAC input on the implementation strategy for the SWRP. • Provide TAC members with an overview of the Water Recovery Study findings. • Update TAC members on the preliminary SWRP project list and prioritization results. • Solicit TAC input on and approval of the selected projects for conceptual design. 10:00 am 1. Welcome/Introductions Jeff Condit
(Monterey One Water)
10:05 am 2. Additions or Revisions to the Agenda Jill Bicknell (EOA)
10:10 am 3. Update on SWRP Task Activity
• Update on activity during Nov. 2017 – Jan. 2018
• Summary of deliverables submitted, under review, and
in progress
Lisa Welsh
(Geosyntec)
10:25 am 4. Implementation Strategy Memo Discussion
• Review of outline and input from TAC
Jill Bicknell
10:45 am 5. Overview of Water Recovery Study Findings Lisa Welsh 11:05 am 6. Task 4 - Project Identification, Prioritization and Analysis • Summary of preliminary project list and prioritization results
• Outcomes from Stakeholder meeting
Lisa Austin / Lisa Welsh
(Geosyntec)
Appendix B: TAC Meeting Summaries B-22
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 619, Packet Page 719 11:30 am BREAK
11:45 am 7. Selection of Projects for Concept Design
• Selection process and recommendations
• TAC input and approval of final selection
Lisa Austin/ Lisa Welsh
12:45 pm 8. Review Action Items Jill Bicknell
1:00 pm 9. Adjourn
Appendix B: TAC Meeting Summaries B-23
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 620, Packet Page 720 Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #3
Thursday, February 22, 2018
10:00 am – 1:00 pm

MEETING SUMMARY
Participants – Attendance list attached.

1. Welcome/Introductions
Jeff Condit (Monterey One Water) welcomed TAC participants and informed them that the purposes of today’s meeting are to: update TAC members on SWRP task activity since the last TAC meeting; receive TAC input on the implementation strategy for the SWRP; provide TAC members with an overview of the Water Recovery Study findings; update TAC members on the preliminary SWRP project list and prioritization results; and solicit TAC input on and approval of the selected projects for conceptual design. Attendees introduced themselves.

2. Additions or Revisions to the Agenda
There were no additions or revisions to the agenda. Jill Bicknell (EOA) reviewed the handout materials, all of which had been sent to the TAC prior to the meeting.

3. Update on SWRP Task Activity
Lisa Welsh (Geosyntec) reviewed the consultant team’s task activity during November 2017 through January 2018, and the summary of grant deliverables (Slide 4 of the TAC PowerPoint presentation, attached). Larry Hampson asked if there was a place to find all the deliverables that had been submitted. Lisa said Geosyntec would set up a dropbox folder or equivalent containing all deliverables produced to date, that could be accessed by TAC and MRSWMP members. The draft SWRP will be posted on the MRSWMP website for public review in May.

4. Implementation Strategy Memo Discussion
Jill reviewed a proposed outline of the Implementation Strategy section of the SWRP, which addresses the requirements in the State Board’s SWRP Guidelines (Slides 6-10), and explained that the purpose of this agenda item is to obtain TAC input on the content of the Strategy.

Although the Strategy is a chapter of the SWRP, a memo on the draft Implementation Strategy is a separate grant deliverable. TAC comments included the following:
• Incorporation into the IRWMP -- The consultant team should coordinate with the Regional Water Management Group (RWMG) to define the process for incorporation of the SWRP into the Monterey Peninsula IRWMP. The RWMG is the entity tasked Appendix B: TAC Meeting Summaries B-24
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 621, Packet Page 721 with developing and implementing the IRWMP, reviewing projects submitted to the plan, and choosing which projects to put forward for funding. The public draft of the SWRP should be introduced to the RWMG at an August meeting and the process for incorporation confirmed. The final SWRP will be completed by September 30, 2018, and should be incorporated into the IRWMP by December. SWRP projects can be submitted for IRWM scoring through the IRWM solicitation process. • Maintaining and Updating the SWRP -- The TAC discussed whether the RWMG or MRSWMP should be responsible for maintaining and updating the SWRP. As part of the IRWMP, the SWRP could be updated on the same schedule as the IRWMP, using the same public process. However, it may make more sense for a stormwater-focused organization like MRSWMP to maintain and update the SWRP separately (in coordination with the IRWMP), in a way that is more responsive to stormwater regulatory requirements and issues/interests.
• Performance Measure Tracking – The TAC discussed the potential use of TELR, possibly supplemented with other spreadsheet tools, to track implementation of projects and benefits achieved. Current Water Management District tracking tools for water supply well locations and monitoring could also be considered. Larry mentioned the need to coordinate with the Seaside Water Master for approval to extract recharged water. The TAC discussed the need for having a way to monitor and get credit for either stormwater diversion to sanitary or recharge to the aquifer. • Other Comments -- Rachid Ait-Lasri informed the TAC that the solicitation for grant proposals for Round 2 of the Prop 1 Stormwater Grants is expected to be released in the first half of 2019, and no revisions to the guidelines are expected. Dominic Roques commented that the next version of the Phase II permit will likely mention the importance of public involvement and integration of stormwater program efforts with SWRPs and IRWMPs and their public processes. Sarah Hardgrave mentioned that DWR met with the Central Coast IRWMs yesterday and suggested having a workshop in late spring on the topic of integrated water management planning and public involvement.

5. Overview of Water Recovery Study (WRS) Findings
The draft WRS was provided to the TAC for review on February 16 and comments are due on March 2. Lisa Welsh provided an overview of WRS findings, including graphics displaying identified opportunities by jurisdiction and by net recovered water volume (Slides 12-14). Lisa explained that the WRS looked only at water supply project opportunities (capture and use, infiltration to a water supply aquifer, diversion to sanitary sewer, and lake/reservoir storage), whereas the SWRP identified opportunities for infiltration for water quality benefits as well.

She noted that the diversion projects were limited by sanitary sewer capacity, and it was assumed that diversions would be primarily dry weather flow, unless there was an opportunity for storage upstream. Larry commented that in winter months, nearly 7 MGD of Appendix B: TAC Meeting Summaries B-25
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 622, Packet Page 722 treated water is being discharged to the Bay due to lack of demand for recycled water during the winter. There is also a need to expand the recycled water project as a potential means of developing additional replacement supplies for the Monterey Peninsula to satisfy the requirements of the SWRCB CDO concerning Carmel River diversions and the requirement by the Superior Court adjudication of the Seaside Groundwater Basin to reduce pumping of native groundwater to the Physical Safe Yield. Judd added that the WRS distinguished wet weather supply from dry weather supply benefits.

6. Task 4 - Project Identification, Prioritization and Analysis a. Summary of preliminary project list and prioritization results Lisa Welsh provided a summary of the progress to date on the database of project opportunities, preliminary scoring, ranking by the MRSWMP jurisdictions, and the resulting total metrics-based scores (Slides 16-19). A Google Earth file was also developed to show project opportunity locations. Lisa Austin asked the TAC if any project opportunities should be deleted from the database (which will be appended to the SWRP), and the TAC agreed that none should be deleted unless a specific request to delete had been provided by a jurisdiction.
b. Outcomes from Stakeholder meeting
Lisa Welsh described Stakeholder Meeting #2, which was held on February 8, 2018 to present the prioritized list of project opportunities and get stakeholder input for identifying projects for conceptual design. The meeting summary and a table of stakeholder comments were distributed to the TAC. The top project characteristics important to stakeholders were: 1) water supply benefits; 2) synergy of project with upcoming projects; 3) project was part of larger restoration or watershed improvement plans; and 4) water quality benefits. The key comments from stakeholders were: 1) develop a more user-friendly version of the project opportunities table; and 2) ensure that project implementation is a collaborative effort and that identified projects compliment and not conflict with each other. Additional information was also received on several Carmel project opportunities, which was used to update the project database.

7. Selection of Projects for Concept Design
a. Selection process and recommendations
Lisa Welsh explained that the SWRP scope of work includes development of seven projects at 10% conceptual design, and development of one of the seven projects at 30% conceptual design. The consultant team developed a list of the suggested top seven projects, as well as nine alternative projects, that represent jurisdiction and project type diversity (Slides 24 and 25). The selection of the top and alternative projects was based on the list of the top 2% of projects in each jurisdiction (based on scores and ranks), stakeholder comments, and largest water supply benefits.

Appendix B: TAC Meeting Summaries B-26
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 623, Packet Page 723 b. TAC input and approval of final selection
Each suggested top project and alternative project and its associated benefits were discussed with the TAC in detail. From the original list of seven top projects, the TAC agreed to eliminate the Del Rey Oaks Capture and Use Project at City Hall and the Sand City Contra Costa Street Green Street Project because they did not provide water supply benefits (the TAC’s and stakeholders’ highest priority). These were replaced with two alternative projects: City of Seaside Del Monte Blvd Diversion Project and the City of Monterey Hartnell Gulch Diversion Project. These are consistent with the TAC’s expressed priority to divert more dry weather flows to sanitary to help meet dry weather recycled water demands. The Carmel diversion project was modified based on comments from the City of Carmel-by-the-Sea (Agnes Topp) prior to the meeting. In addition, the TAC agreed to limit the Dry Well Catch Basin Retrofit Program to areas with infiltration above the Seaside groundwater basin. Jeffrey Albrecht clarified that programmatic projects like the Dry Well Catch Basin Retrofit Program can be included in the SWRP, although they may need a different method of scoring for multiple benefits.

The final list of top projects for 10% design is attached. The TAC agreed that the El Estero Lake Reservoir Project was the #1 project for 30% design because it offered a large amount of potential storage capacity (>100 AF/yr) and proximity to a sanitary sewer for diversion.

8. Review Action Items
As described in the summary of deliverables and reviews, the following products will be completed by the consultant team prior to TAC Meeting #4 (see Slides 4 and 27):
• Draft SWRP Implementation Strategy
• Prioritized Projects Technical Memorandum
• Administrative Draft SWRP and Self-Certification Checklist • Draft 10% level designs of top seven projects
Appendix B: TAC Meeting Summaries B-27
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 624, Packet Page 724 Technical Advisory Committee (TAC) Meeting #3
February 22, 2018
Attendance List
Name Organization
Scott Ottmar City of Seaside
Jeff Krebs City of Monterey
Tom Harty County of Monterey Resource Management Agency Jeff Condit Monterey One Water
Larry Hampson Monterey Peninsula Water Management District Jill Bicknell EOA, Inc. (consultant to Monterey One Water) Lisa Welsh Geosyntec (consultant to Monterey One Water) Lisa Austin Geosyntec (consultant to Monterey One Water) Diana Staines Denise Duffy & Assoc. (consultant to Monterey One Water) Sarah Hardgrave (phone) Big Sur Land Trust
Dominic Roques (phone) Regional Water Quality Control Board, Central Coast Region Jeffrey Albrecht (phone) State Water Resources Control Board Rachid Ait-Lasri (phone) State Water Resources Control Board Judd Goodman (phone) Geosyntec (consultant to Monterey One Water) Denise Duffy (phone) Denise Duffy & Assoc. (consultant to Monterey One Water) Appendix B: TAC Meeting Summaries B-28
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 625, Packet Page 725 Top 7 Projects for Conceptual Design
Appendix B: TAC Meeting Summaries B-29
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 626, Packet Page 726 Monterey Peninsula SWRP TAC Meeting #3 2/22/18
1 Monterey Peninsula
Stormwater Resource Plan
TAC Meeting #3
22 February 2018
TAC Meeting #3 Agenda
 1. Welcome/Introductions
 2. Additions or Revisions to the Agenda
 3. Update on SWRP Task Activity
 4. Implementation Strategy Memo Discussion
 5. Overview of Water Recovery Study Findings
 6. Project Identification, Prioritization and Analysis  7. Selection of Projects for Concept Design
 8. Review Action Items
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 2

3. Update on SWRP Task Activity
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 3
Summary of Grant Deliverables
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 4
Grant
Item # Description / Submittal Final Draft to State Submittal Status

2.2 Agenda, Notes for 2nd TAC Meeting 11/24/2017 Submitted

2.2 Agenda, Notes for 3rd TAC Meeting 03/30/2018 In progress

3.1 Annotated List of Plans and Reports 11/24/2017 Submitted

3.1 Database of Planned Projects Discussion Completed

3.1 Summary of Data Received 11/24/2017 Submitted

4.4.1 Technical Memo on Water Recovery Study Approach 11/27/2017* Completed

4.4.1/2 Technical Memo on Modeling Tools and Methodologies 11/24/2017 Submitted

4.5 Results of Analysis, Prioritization, and Project Selection (Prioritized Projects Technical Memorandum) 3/30/2018 In progress

4.5 Water Recovery Study Results (Report) 3/16/2018* Draft Completed

4.6.3 Technical Memo on Draft Implementation Strategy 3/30/2018 In progress

4.7 Administrative Draft SWRP and Self-Certification Checklist 4/30/2018 In progress

6.1.2 Stakeholder Meeting 1 Notes 2017 Q4 Report Submitted

6.1.2 Stakeholder Meeting 2 Notes 2018 Q1 Report In progress *not a grant deliverable

4. Implementation Strategy Memo
Discussion
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 5
SWRP Implementation Strategy Topics*
 Resources for Plan Implementation
 Plan Implementation (Projects and Programs)
 Adaptive Management (Maintaining a Living Document)
 Implementation Performance Measures
*Per SWRCB SWRP Guidelines (2015)
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 6
Appendix B: TAC Meeting Summaries B-30
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 627, Packet Page 727 Monterey Peninsula SWRP TAC Meeting #3 2/22/18
2 Resources for Plan Implementation
 Projected additional funding needs and sources
Estimated costs of concept-designed projects
Costs/funding for Water Recovery Study projects
Sources: grants, CIP budgets, water rates? Other?
 Schedule for securing “Plan financing for
project implementation”?
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 7
Projectspecific
Plan Implementation
 Timeline for incorporating SWRP into IRWMP
 Identification of specific actions, projects and studies  Entities responsible for project implementation
 Institutional structure to ensure implementation
 Procedure to track status of each Plan element
 Community participation strategy
 Timelines for active/planned project components
 Strategy for obtaining needed federal, state, and
local permits
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 8
Projectspecific
Adaptive Management
 Living document – ongoing, adaptive program
 Need clear procedures for updating/adding future projects  Reflect current understanding of the watershed and address changing conditions
 Example updates that may be needed:
 Re-characterization of water quality priorities
 Source assessment re-evaluation
 Effectiveness assessment of projects
 Updated metrics-based, quantitative analysis of benefits  Deleted or new projects
 Identification of completed projects
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 9
Implementation Performance Measures
 Document how identified projects will achieve multiple benefits
 Discuss required data, technical analyses and performance measures for the following:
 Evaluation of expected and actual Plan outcomes
 Quantification of multiple benefits and environmental outcomes  Monitoring/data management systems needed for performance data  Mechanisms to adapt Plan and project operations
 Mechanisms to share performance data with stakeholders Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 10

5. Overview of Water Recovery Study
Findings
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 11
Water Recovery Study Findings Overview
 Draft Report sent to City of Monterey, TAC, and Technical Stakeholders  240 potential projects evaluated for water volume recovered and project feasibility
 4 Project Categories:

1. Capture and use

2. Infiltration to a water supply aquifer

3. Diversion to sanitary sewer

4. Lake/reservoir
 Resources for project consideration:
 List of projects with the highest water volume recovered and lowest project cost  List of two projects with greatest water volume recovered in each jurisdiction  Map of water volume recovered by catchment
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 12
Appendix B: TAC Meeting Summaries B-31
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 628, Packet Page 728 Monterey Peninsula SWRP TAC Meeting #3 2/22/18
3 Identified Opportunities by Jurisdiction
and by Net Recovered Water Volume
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 13
Net Recovered Water Volume, AFY
Identified Opportunities by Jurisdiction
and by Net Recovered Water Volume
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 14
No Infiltration Projects

6. Task 4 – Project Identification,
Prioritization and Analysis
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 15
Summary of Deliverables
 Project Database
 Excel workbook with preliminary scoring of project opportunities  Unique db_index code for each project opportunity
 Editable Fields
 Project Rank
 Rank Reasoning
 Total Score
 Metric-based multi-benefit scores
 Prioritization instructions memo for Permittees
 Google Earth files of GIS-identified project opportunities and stakeholder projects  Identifies locations of Water Recovery Study, Planned, ROW, and Parcel-based, and Regional project opportunities  Project opportunities are searchable
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 16
Identified Opportunities by Jurisdiction
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 17
Scoring Frequency Distribution
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 18
1 2
4 4
7 9
3 2 9
5 4 1 1 1
1 Number of Projects in
Top 2% by Jurisdiction
and Rank
Appendix B: TAC Meeting Summaries B-32
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 629, Packet Page 729 Monterey Peninsula SWRP TAC Meeting #3 2/22/18
4 Grant Task 4.5 – Project Identification, Prioritization, and Analysis
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 19
Grant Task 6.1.2 – Outcomes from Stakeholder Meeting #2 Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 20
 Results from sticker voting activity – top project characteristics 1) Water supply benefits
2) Synergy of project with upcoming projects
3) Project part of larger restoration or watershed improvement plans 4) Water quality benefits
 Stakeholder feedback documented in comment matrix
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 21

7. Selection of Projects for Concept
Design
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 22
Selection of Projects for Concept Design
 Seven projects developed at 10% conceptual design
 One of the seven projects developed at 30% conceptual design  Resources for project consideration
 Feedback from Stakeholder Meeting #2
 List of the top 2% of projects
 List of projects with the highest water volume recovered and lowest project cost  List of two projects with most water volume recovered in each jurisdiction  Map of water volume recovered by catchment
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 23
Suggested Top 7 Projects
Objective: Jurisdictional and project type diversity among top ranked projects

1. Carmel-By-The-Sea  planned_43 and planned_44 (Carmel, Dry Weather Diversion)

2. Pacific Grove  LR_02 (David Avenue Reservoir)

3. Monterey  LR_04 (El Estero Lake)

4. Del Rey Oaks  CU_84 (Del Rey Oaks City Hall)

5. Seaside  planned_19 (Del Monte Manor Infiltration Project)

6. Sand City  ROW_1658 (Contra Costa Street)

7. County of Monterey  INF_DW_CV (Dry Well Catch Basin Retrofit Program) Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 24
Appendix B: TAC Meeting Summaries B-33
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 630, Packet Page 730 Monterey Peninsula SWRP TAC Meeting #3 2/22/18
5 Alternative Projects
Objective: Most Water Volume Recovered (100+ AFY)
Monterey a) LR_04 (El Estero Lake) – listed on previous slide b) LR_03 (Del Monte Lake)
c) LR_12 (Laguna Grande)
d) DSS_planned_51 (Hartnell Gulch)
e) DSS_04 (City of Monterey Tunnel & Calle Principal diversion into sanitary sewer) Seaside
a) DSS_06 (Del Monte Blvd diversion into sanitary sewer) b) INF_DW_SEA (Dry Well Catch Basin Retrofit Program)
Monterey County
a) DSS_14 (Los Padres Reservoir)
Del Rey Oaks
a) LR_08 (Monterey Peninsula Regional)
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 25

8. Review Action Items and Next
Steps
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 26
TAC #4 Discussion Topics
 Prioritized Projects Tech Memo (Grant Task 4.5)
 Included in 3/30 State Submittal
 Draft Implementation Strategy Tech Memo (Grant Task 4.6.3)  Included in 3/30 State Submittal
 Draft Administrative Draft SWRP (Grant Task 4.7)
 Send to TAC for review by 4/9
 Draft 10% Level Designs (Grant Task 5.1)
 Send to TAC for review by 4/9
Monterey Peninsula SWRP TAC Meeting #3 3/2/2018 27
Appendix B: TAC Meeting Summaries B-34
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 631, Packet Page 731 Monterey SWRP TAC Mtg #4 Agenda_4-12-18_final 1
Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #4
Thursday, April 12, 2018
10:00 am – 12:00 noon
Monterey One Water Conference Room
5 Harris Court, Building D, Monterey, CA
Call-in Number: 605-475-6711; Access Code: 675-7310
https://global.gotomeeting.com/join/745754045

FINAL AGENDA
MEETING OBJECTIVES:
• Update TAC members on SWRP task activity since the last TAC meeting. • Receive TAC input on the DRAFT Administrative Draft Stormwater Resource Plan (SWRP). • Update TAC members on the status of preparation of 10% and 30% concept designs of selected projects and receive TAC input on example 10% concept designs. • Solicit TAC input on plans for the public workshop for presentation of the Public Draft SWRP. 10:00 am 1. Welcome/Introductions Jeff Condit
(Monterey One Water)
10:05 am 2. Additions or Revisions to the Agenda Jill Bicknell (EOA)
10:10 am 3. Update on SWRP Task Activity
• Update on activity during February – April 2018
• Summary of deliverables submitted, under review, and
in progress
Lisa Welsh
(Geosyntec)
10:25 am 4. Task 4.7 -- DRAFT Administrative Draft SWRP • Overview of document and key areas for input
• Input from TAC review
Lisa Welsh
10:35 am 5. Task 5.1 – Project Concept Designs
• Review of final list of projects for 10% and 30% concept design and selection process
• Input from TAC review of example 10% concept designs
Lisa Welsh
Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 632, Packet Page 732 B-35
Monterey SWRP TAC Mtg #4 Agenda_4-12-18_final 2
11:40 am 6. Task 6.1.2 -- Public Outreach Meeting (June 2018) • Potential date, time, and location
• Meeting format
• Pre-meeting outreach plan
Jill Bicknell
11:55 am 7. Review Action Items Jill Bicknell
12:00 pm 8. Adjourn
Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 633, Packet Page 733 B-36
Monterey SWRP TAC Mtg #4 Summary_4-12-18_final 1
Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #4
Thursday, April 12, 2018
10:00 am – 12:00 noon

MEETING SUMMARY

1. Welcome/Introductions
Jeff Condit (Monterey One Water) welcomed TAC participants and informed them that the purposes of today’s meeting are to: update TAC members on Stormwater Resource Plan (SWRP) task activity since the last TAC meeting; receive TAC input on the DRAFT Administrative Draft SWRP; update TAC members on the status of preparation of 10% and 30% concept designs of selected projects and receive TAC input on example 10% concept designs; and solicit TAC input on plans for the public workshop for presentation of the Public Draft SWRP. Attendees introduced themselves.

2. Additions or Revisions to the Agenda
There were no additions or revisions to the agenda.

3. Update on SWRP Task Activity
Lisa Welsh (Geosyntec) reviewed the consultant team’s task activity during March and April 2018, and the summary of grant deliverables to date and in progress (Slide 5 of the TAC PowerPoint presentation, attached). She also reviewed the items for TAC review in April and May (Slide 6). The TAC’s current focus for review is the DRAFT Administrative Draft SWRP.

Comments are due by April 23. TAC members will have another opportunity to review the Admin Draft after it is submitted on April 30 and before the Public Draft is completed (May 31).

Dominic Roques (Central Coast Regional Water Board) asked about the CEQA process for the SWRP and the 30% concept design for the Hartnell Gulch project. Lisa explained that the SWRP itself is exempt from CEQA but there will be a CEQA checklist prepared for the Hartnell project and included in the Public Draft SWRP. Larry Hampson (Monterey Peninsula Water Management District) asked if a CEQA initial study was required prior to submitting a project for a Prop 1 implementation grant. Rachid Ait-Lasri (State Water Board Grant Manager) confirmed that CEQA documentation is not required as part of the grant application; however, completion of some or all of the CEQA process for a project will improve project scoring (as it is a measure of project readiness).

Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 634, Packet Page 734 B-37
Monterey SWRP TAC Mtg #4 Summary_4-12-18_final 2

4. Task 4.7 -- DRAFT Administrative Draft SWRP
Lisa reviewed the outline of the Admin Draft SWRP sections (Slide 8). She recommended that TAC members conduct a high level review, since they have already reviewed most of the content in the form of technical memoranda. The key items for input at this point are the project concepts.

Larry asked if the issue of excess wet weather flows and options for capture and use would be described in the SWRP. Judd Goodman (Geosyntec) said that options for improvements to water and wastewater infrastructure, that would allow for additional runoff capture, will be included in Section 4 of the Water Recovery Study (WRS). The section will describe what can be done with current infrastructure and with future enhancements. Lisa added that another option for capturing wet weather flows is the proposed drywell program. It was agreed that capturing wet weather flows is a lower priority than diverting dry weather flows.

5. Task 5.1 – Project Concept Designs
Lisa presented the final list of projects for 10% and 30% concept design (Slide 11) and described that the list of projects was finalized through email communication with the TAC over the weeks following the last TAC meeting. Maps were prepared for each project concept, included contributing drainage area and key features, and a template for describing the projects in the SWRP was provided (using the Hartnell Gulch project as an example). Lisa noted that all project descriptions will be provided to project proponents for review before including them in the Public Draft SWRP.

Lisa described the details of each project considered for the 10% concept design, and the TAC provided the following input:

Hartnell Gulch
• Dominic - It may be difficult to get permits to put fill in the creek. It might be a good idea to bring in Fish & Game staff and Central Coast Regional Water Board 401 Certification staff (contact Phil Hammer). He also suggested that options for creek restoration be investigated. Judd – portions of the canyon are narrow with steep banks.
• Sarah Hardgrave (Big Sur Land Trust) – look at opportunities to widen channel banks and add wetlands. Also suggested including permeable paving in parking lot near Pacific. Photographs of the area would be helpful.
• Diana Staines (Denise Duffy & Associates) – will trails and signage be part of the project? Jeff – possible locations for trails and signs will be indicated, but not designed.
• Dominic – the write-up in the template for the Hartnell project needs to be improved. • Larry – Can the template include cross sections? Judd – templates are for 10% design; cross sections will be included in the 30% concept design.

Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 635, Packet Page 735 B-38
Monterey SWRP TAC Mtg #4 Summary_4-12-18_final 3
• Sarah – consider a CDS unit or other measure to collect sediment upstream of the diversion structure and maintenance costs.
• Dominic – a 30-year planning horizon should include consideration of climate change impacts. Judd – it would be difficult to consider climate change without looking at specific model results for the location because climate predictions are model dependent. The 30-year life cycle cost estimate would provide a range that indirectly accounts for climate change impacts.
• Larry – there was a USGS climate change study done for the Carmel River watershed which could be a good reference.
• Judd – Excess capacity in the sanitary sewer needs to be known in order to define the rate of diversion.

Lake El Estero
• Judd – the 10% design is consistent with the project in the EIR. A new aspect being investigated is the ability to store additional wet weather flow. Estimates of runoff recovery volume will be provided assuming both existing infrastructure constraints (divert during the dry season only) and potential future infrastructure improvements (divert at any time of year, but not during or immediately following storm events) Monterey Tunnel and Calle Principal Stormwater Diversion • Discussed different diversion locations.
• Jennifer Gonzalez (Monterey One Water) – connection to the Monterey One Water interceptor pipeline requires a flow meter. Gravity connections from storm drain to sanitary sewer are not an option; diversions would have to be pumped. • Judd – Excess capacity in the sanitary sewer needs to be known in order to define the rate of diversion. Jeff Krebs had mentioned previously he was going to get metering data of seepage flows that can be diverted during the dry season.

David Avenue Reservoir
• A stormwater management project that included David Avenue Reservoir was completed by Fall Creek Engineering in 2014 and included a 40% design. A follow up study is underway by the Wallace Group to revise/update analyses from the Fall Creek report. Work by Wallace will not be completed in time for inclusion in the SWRP but Geosyntec will make sure that their data and calculations are consistent with what Wallace is using.
• Judd – will need feedback from the TAC on sanitary sewer capacity, which may dictate the rate of discharge to the sanitary sewer, if this is the preferred option over discharging to the storm drain.
• Sarah – there have been improvements in the storm drainage infrastructure downstream of the project, including installation of trash capture devices, that should be considered.

Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 636, Packet Page 736 B-39
Monterey SWRP TAC Mtg #4 Summary_4-12-18_final 4
Del Monte Manor Park
• Lisa – the concept is to use a vegetated swale to direct runoff to a rain garden in the corner of the park, which would then discharge to an infiltration well. • Scott – will run the concept by other staff. There may be other storm drains in the area that can be diverted.

Dry Well Aquifer Recharge Program
• Lisa – the concept is to divert storm drains to infiltration wells with pretreatment.

Depths to groundwater are 30 to 60 feet in the area. The most downstream locations were selected to capture the largest drainage areas. Locations are indicated as parcelsized, but they only require an area the size of a parking stall. They can be installed in the public right of way, such as under a sidewalk. Some locations may require several drywells in combination.
• Sarah – How often does the pretreatment chamber need to be maintained? Lisa – approximately once per year on average. Sarah – make sure there is access for maintenance.
• Scott – note that some of the streets convey a lot of surface runoff; it is not all piped flow. Lisa – could look at two options, capturing street flow and diverting piped flow. • Scott – interested in draining street runoff from Hilby Ave and Kimball Ave to a bioretention facility that could also be used for traffic calming.

South Carmel and 4th Avenue Dry Weather Diversion
• Lisa – Project concept is storm water diversion to the sewer main along San Antonio Ave. Concept will also mention a larger potential project that would include construction of a new stormwater pipe along San Antonio and a new dedicated stormwater holding tank at Rio Park (behind the Mission and Larson Field). Water demand is in the dry and wet season for golf course irrigation in Del Monte Forest (Pebble Beach).

6. Task 6.1.2 -- Public Outreach Meeting (June 2018)
a. Potential date, time, and location
Lisa explained that the Public Draft will be released by May 31, which would make a mid-June date appropriate. Jeff Condit said that Jeff Krebs is looking into the use of either the Monterey Convention Center (first choice) or Monterey City Council Chambers. It would be an evening meeting, about one hour in duration. b. Meeting format
It was suggested that the format consist of a brief presentation followed by an opportunity for the public to walk around to different stations at which exhibits describing the concept projects were displayed. It was also suggested that exhibits be prepared with basic information on the water needs of the region and how the Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 637, Packet Page 737 B-40
Monterey SWRP TAC Mtg #4 Summary_4-12-18_final 5
projects will help to augment water supply. A translator will be available at the meeting (Diana and Sarah can provide contacts).
c. Pre-meeting outreach plan
• The Public Draft SWRP will be posted on the www.montereysea.org website.

Other organizations (e.g., IRWM, MWD) will be asked to post links to the document.
• A bilingual flyer will be developed, and released about 2 weeks before the meeting. TAC members and MRSWMP agencies will help post the flyer in public places (e.g., city halls and libraries) and online. The flyer will also be emailed to the stakeholder list.
• An advertisement will be developed and placed in the Monterey County Weekly.

The City of Monterey will help post a notice on Next Door.

7. Action Items
• TAC members will provide comments on the DRAFT Admin Draft by April 23. • Geosyntec will work with project proponents to address project issues and complete the 10% concept designs in May and the 30% concept design in June. • Jeff Condit will work with Jeff Krebs to identify a date, time and location for the public workshop.
• EOA will develop the public workshop flyer and send to Jeff Condit by May 31. EOA will also look into placing an ad in the Monterey County Weekly. • Diana and Sarah will provide contacts for Spanish translators to EOA. • The project team will schedule TAC Meeting #5 for late July.

Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 638, Packet Page 738 B-41
Stormwater Resource Plan for the Monterey Peninsula,
Carmel Bay, and South Monterey Bay IRWMP Region

1 Technical Advisory Committee (TAC) Meeting #4
April 12, 2018
Attendance List
Name Organization
Scott Ottmar City of Seaside
Richard Lancero City of Monterey
Tom Harty (phone) County of Monterey Resource Management Agency Jeff Condit Monterey One Water
Jennifer Gonzalez Monterey One Water
Larry Hampson Monterey Peninsula Water Management District Sarah Hardgrave Big Sur Land Trust
Dominic Roques (phone) Regional Water Quality Control Board, Central Coast Region Rachid Ait-Lasri (phone) State Water Resources Control Board Lisa Welsh Geosyntec (consultant to Monterey One Water) Judd Goodman Geosyntec (consultant to Monterey One Water) Lisa Austin (phone) Geosyntec (consultant to Monterey One Water) Jill Bicknell (phone) EOA, Inc. (consultant to Monterey One Water) Diana Staines Denise Duffy & Assoc. (consultant to Monterey One Water) Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 639, Packet Page 739 B-42
4/30/2018
1 Monterey Peninsula
Stormwater Resource Plan
TAC Meeting #4
12 April 2018
TAC Meeting #4 Agenda
 1. Welcome/Introductions
 2. Additions or Revisions to the Agenda
 3. Update on SWRP Task Activity
 4. Administrative Draft SWRP
 5. Project Concept Designs
 6. Public Outreach Meeting (June 2018)
 7. Review Action Items
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 2

2. Additions or Revisions to the Agenda
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 3

3. Update on SWRP Task Activity
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 4
Summary of Grant Deliverables
4/30/2018 Monterey Peninsula SWRP TAC Meeting #4 5
Grant
Item # Description / Submittal Final Draft to State Submittal Status

2.2 Agenda, Notes for 3rd TAC Meeting 3/29/2018 Submitted

2.2 Agenda, Notes for 4th TAC Meeting 4/30/2018 In progress

4.5 Results of Analysis, Prioritization, and Project Selection (Prioritized Projects Technical Memorandum) 3/29/2018 Submitted

4.5 Water Recovery Study Report 3/30/2018* Final Draft
Completed

4.6.3 Technical Memo on Draft Implementation Strategy 3/29/2018 Submitted

4.7 Administrative Draft SWRP and Self-Certification
Checklist 4/30/2018 In progress

4.8 Public Draft SWRP with 10% Concept Designs & CEQA 5/31/2018 In progress

6.1.2 Stakeholder Meeting 2 Notes 2018 Q1 Report In progress *not a grant deliverable
Items for TAC Review
4/30/2018 Monterey Peninsula SWRP TAC Meeting #4 6
*not a grant deliverable
Grant
Item # Description / Submittal Final Draft to State Submittal Status

2.2 Agenda, Notes for 3rd TAC Meeting 3/29/2018 Submitted

2.2 Agenda, Notes for 4th TAC Meeting 4/30/2018 In progress

4.5 Results of Analysis, Prioritization, and Project Selection (Prioritized Projects Technical Memorandum) 3/29/2018 Submitted

4.5 Water Recovery Study Report 3/30/2018* Final Draft
Completed

4.6.3 Technical Memo on Draft Implementation Strategy 3/29/2018 Submitted

4.7 Administrative Draft SWRP and Self-Certification
Checklist 4/30/2018 In progress

4.8 Public Draft SWRP with 10% Concept Designs & CEQA 5/31/2018 In progress

6.1.2 Stakeholder Meeting 2 Notes 2018 Q1 Report In progress Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 640, Packet Page 740 B-43
4/30/2018
2 4. Administrative Draft SWRP
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 7
Administrative Draft SWRP Outline
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 8
 1. Introduction
 2. Organization, Coordination, and Collaboration
 3. Watershed Identification
 4. Water Quality Compliance
 5. Quantitative Methods for Identification and Prioritization  6. Identification and Prioritization of Projects
 7. Implementation Strategy and Schedule
 8. Education, Outreach, and Public Participation
Administrative Draft SWRP Appendices
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 9
 A – Self Certification Checklist
 B – TAC Meeting Summaries
 C – Annotated List of Data and Plans
 D – Water Recovery Study Report
 E – Planned Project Data Request and SWRP Project Database  F – Project Concepts (May)
 G – CEQA Checklist (May) & 30% Project Concept (June)  H – Stakeholder Outreach Plan and Meeting Summaries

5. Project Concept Designs
Monterey Peninsula SWRP TAC Meeting #3 4/30/2018 10
Concept Projects
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 11
Project Name Project Proponent Project Type Project Description Hartnell Gulch Monterey
Diversion to sanitary
sewer and creek
restoration project
Install two pumps to divert underground seepage into
the sanitary sewer as well as stream restoration to
improve the riparian corridor.

Lake El Estero Monterey
Lake project with
diversion to sanitary
sewer
Install diversion valve from box culvert on north side of the lake to divert flows into the sanitary sewer.

Tunnel and Calle Principal
Stormwater Diversion Monterey Diversion to sanitary sewer project Install diversion pump for underground seepage and
divert to the sanitary sewer.

South Carmel and 4th Avenue
Dry Weather Diversion Carmel-by-the-Sea Diversion to sanitary sewer project Divert dry weather runoff and small wet weather flows to the sanitary sewer for treatment and reuse for golf
course irrigation.

David Ave Reservoir Pacific Grove
Reservoir project with
diversion to sanitary
sewer
Store and divert runoff to the sanitary sewer.

Del Monte Manor Park
Infiltration Seaside Regional infiltration project
Open space park improvements and flood management to
infiltrate runoff from the surrounding right-of-way.

Dry Well Aquifer Recharge
Program
Seaside with support
from regional partners
Infiltration to domestic
supply aquifer program
Divert flows from the storm drain network into a water
quality pretreatment system that will discharge to a dry well above the domestic supply aquifer.

6. Public Outreach Meeting
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 12
Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 641, Packet Page 741 B-44
4/30/2018
3 Public Outreach Meeting
Logistics: Date (mid June), Time, Location
Meeting Format
Pre-Meeting Outreach Plan
• Posting of the Admin Draft SWRP
• Online Version
• Print Copy
• Bilingual Flyer (distributed via email and community center postings)
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 13

8. Review Action Items and Next
Steps
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 14
TAC Meeting #5 – Late July
 Response to Comments on Public Draft SWRP
 Response to Comments on CEQA Checklist
Monterey Peninsula SWRP TAC Meeting #4 4/30/2018 15
Appendix B: TAC Meeting Summaries
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 642, Packet Page 742 B-45
Stormwater Resource Plan for the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Planning Region Technical Advisory Committee (TAC)
Meeting #5
Monday, August 13, 2018
10:00 am – 12:00 noon
Conference Call Only

MEETING SUMMARY

1. Welcome/Introductions
Jeff Condit (Monterey One Water) welcomed TAC participants and informed them that the purposes of today’s meeting are to: update TAC members on Stormwater Resource Plan (SWRP) task activity since the last TAC meeting; receive TAC input on responses to comments on the Public Draft SWRP; update TAC members on the 30% design for the Hartnell Gulch Project and receive input; and discuss next steps and remaining deliverables through the end of the project. Attendees introduced themselves.

2. Additions or Revisions to the Agenda
There were no additions or revisions to the agenda.

3. Update on SWRP Task Activity
Kelly Havens (Geosyntec) reviewed the consultant team’s task activity during May – August 2018, and the summary of grant deliverables to date and in progress.

4. Task 4.7 -- Public Draft SWRP
Lisa Welsh (Geosyntec) provided an overview of the Public Meeting held on June 27, 2018 to present the SWRP to the public. The meeting was well attended. The meeting included an update on the SWRP process, IRWMP process, and presentation of conceptual project designs. The meeting was video recorded and the recording is posted on the MontereySEA.org website.

Kelly said that a Draft Responses to SWRP Public Comments Matrix was e-mailed to the TAC for review. The matrix includes a summary of the public comments received at the public meeting, as well as written comments received during the public comment period. She provided an overview of the following comments that will lead to some changes in the SWRP, and asked for the TAC’s input:

Appendix B: TAC Meeting Summaries B-46
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 643, Packet Page 743 • In response to a comment, all statements referring to removal of urban pollutants associated with urban flows will be revised to replace “removal” with “treatment”.

The TAC agreed with this response.
• Three projects for which Conceptual Designs were prepared propose to use stormwater runoff to help recharge the Seaside Groundwater Basin. One public comment noted that additional permits may be needed from Seaside Basin Watermaster. Kelly asked if it would be appropriate to include additional language to the SWRP stating that implementation of these projects would require filing a storage application and obtaining a permit from the Seaside Basin Watermaster in order to authorize the recharge to be performed. Scott Ottmar (Seaside) noted that these projects propose using green infrastructure facilities, and should not require additional permitting. Dominic Roques (Regional Water Board) supported Scott’s statement.
• A comment was received at the public meeting and stakeholder meetings noting that agencies should ensure that project implementation is a collaborative effort, and identified projects should not be in conflict with each other. Kelly informed the TAC that project footprints do not overlap; however, project drainage areas may overlap.

Overlapping drainage areas were identified in the Water Recovery Study as described in Appendix D of the SWRP. Prior to moving forward with project design, overlapping drainage areas may need to be considered. However, this level of coordination is outside of the SWRP Scope of Work. The TAC agreed with this response. • Tom Reeves submitted a number of questions and comments on the Public Draft SWRP and Water Recovery Study. The TAC agreed that all of his questions are good ones, but addressing most of them is outside of the scope of work for the SWRP.

There are policy questions related to economic analysis, distribution of benefits to the community, interagency agreements, and water rights that will need to be addressed as projects are implemented. In response to his question about the cities achieving the goal of “zero discharge”, Sarah Hardgrave (Big Sur Land Trust) suggested clarifying that this goal is specific to dry weather flows being discharged to an Area of Special Biological Significance (ASBS). Sarah offered to set up a meeting with Alison Imamura, Larry Hampson, Jeff Krebs, and others to discuss how to address some of the policy questions. Kelly said she would edit the matrix and send it to the group in advance of the meeting.

5. Task 5.1 – Project Concept Designs – Update on 30% Design for Hartnell Gulch • Kelly reviewed the design details for the Hartnell Gulch project and the implementation plan. Dominic Roques (Regional Water Board) had the following comments:

Appendix B: TAC Meeting Summaries B-47
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 644, Packet Page 744 o With the high flow diversion eliminated, did the design try to address the effects of high flows on the channel? Kelly replied that grade controls had been added.

Jeff Krebs added that raising the channel bed allowed the channel to be wider, which reduces flow velocities, and that channel armoring was also planned. o Has Geosyntec staff contacted the 401 Certification staff at the Water Board? Kelly replied no, this will be part of the next steps on the project. Dominic encouraged her to contact them as soon as possible to discuss the project.

6. Next Steps and Project Completion
• Kelly reviewed the remaining steps for completion of the project (Slide 15). Key deliverables include completing the Final Draft SWRP by August 31; and completing the Final SWRP and Self-Certification Checklist, the Final 30% Level Design and Project Implementation Plan, and the CEQA Study Final Draft by September 30.

7. Action Items
In addition to the steps described in Item 6 above, other action items included:
• Kelly will revise the response to comments matrix and email it to the TAC, along with a redlined version of the revised SWRP, including the responses to comments. • Sarah will set up a meeting to discuss policy issues related to SWRP comments.

Appendix B: TAC Meeting Summaries B-48
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 645, Packet Page 745 Technical Advisory Committee (TAC) Meeting #5
August 13, 2018
Attendance List (all by phone)
Name Organization
Scott Ottmar City of Seaside
Jeff Condit Monterey One Water
Alison Imamura Monterey One Water
Larry Hampson Monterey Peninsula Water Management District Jeff Krebs City of Monterey
Sarah Hardgrave Big Sur Land Trust
Dominic Roques Regional Water Quality Control Board, Central Coast Region Lisa Welsh Geosyntec (consultant to Monterey One Water) Kelly Havens Geosyntec (consultant to Monterey One Water) Jill Bicknell EOA, Inc. (consultant to Monterey One Water) Vishakha Atre EOA, Inc. (consultant to Monterey One Water) Diana Staines Denise Duffy & Assoc. (consultant to Monterey One Water) Appendix B: TAC Meeting Summaries B-49
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 646, Packet Page 746 8/15/2018
1 Monterey Peninsula
Stormwater Resource Plan
TAC Meeting #5
August 13, 2018
TAC Meeting #5 Agenda

1. Introductions

2. Additions or Revisions to the Agenda?

3. Update on SWRP Task Activity

4. Public Draft SWRP – Comments Received and Response
Discussion

5. Update on 30% Design for Hartnell Gulch

6. Next Steps and Project Completion

7. Review Action Items
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 2

2. Additions or Revisions to the Agenda?
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 3

3. Update on SWRP Task Activity
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 4
Summary of Grant Deliverables – Q2, Q3, Q4 2018
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 5
Grant
Item # Description / Submittal Final Draft to State Submittal Status

2.2 Agenda, Notes, Sign-In for 4th TAC Meeting 4/30/2018 Submitted

2.2 Agenda, Notes, Sign-In for 5th TAC Meeting 8/31/2018 In progress

4.7 Administrative Draft SRP and Draft Self-Certification Checklist 4/30/2018 Submitted

4.8 Public Draft SRP 6/25/2018 Submitted

4.9 Summary of Comments 7/25/2018 Submitted

4.9 Responses to Comments (to TAC only) 8/8/2018 Submitted

4.1 Final Draft SRP 8/31/2018 In progress*

4.11 Final SRP and Signed Self-Certification and Submittal to State, TAC, and IRWM Group 9/30/2018 In progress

5.1 10% Level Designs - Seven Concepts 6/25/2018 Submitted

5.2 30% Level Design and Project Implementation Plan 9/30/2018 In progress

5.2 CEQA Study Final Draft 9/30/2018 In progress
(Complete)

6.1.2 Public Outreach Meeting (Public Draft SWRP) 2018 Q2 Report In progress Overview of Public Meeting
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 6
Appendix B: TAC Meeting Summaries B-50
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 647, Packet Page 747 8/15/2018
2 4. Public Draft SWRP – Comments
Received and Response Discussion
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 7 Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 8

5. Update on 30% Design for Hartnell Gulch
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 9 Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 10 Overview of Proposed Design
 Invasive plants to be replaced with native vegetation  Bed elevation to be raised to promote public access
 Drop structure at downstream limit
 Buried stone grade controls located at upstream limits of project, and three bridge crossings
 Dry weather flow to be diverted to sanitary sewer via new manhole in Hartnell Street
 Diversion includes stop log structure, gravity pipe, hydrodynamic separator, pump station, and forcemain
 High flow bypass stormdrain was found to be infeasible due to high peak design flowrates
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 11 Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 12 DRAFT – In Progress
Appendix B: TAC Meeting Summaries B-51
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 648, Packet Page 748 8/15/2018
3 Hartnell Gulch Project Implementation Plan
 Introduction/Overview
 Major Implementation Tasks
Field Testing
Design
Permitting/Approval/Reporting
Construction
 Suggested Implementation Schedule
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 13

6. Next Steps and Project Completion
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 14
Summary of Grant Deliverables – Q3, Q4 2018
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 15
Grant
Item # Description / Submittal Final Draft to State Submittal Status

2.2 Agenda, Notes, Sign-In for 5th TAC Meeting 8/31/2018 In progress

4.1 Final Draft SRP 8/31/2018 In progress*

4.11 Final SRP and Signed Self-Certification and
Submittal to State, TAC, and IRWM Group 9/30/2018 In progress

5.2 30% Level Design and Project
Implementation Plan 9/30/2018 In progress

5.2 CEQA Study Final Draft 9/30/2018 In progress
(Complete)

6.1.2 Public Outreach Meeting (Public Draft
SWRP)
2018 Q2
Report In progress

7. Review Action Items
Monterey Peninsula SWRP TAC Meeting #5 8/15/2018 16
Appendix B: TAC Meeting Summaries B-52
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 649, Packet Page 749

APPENDIX C
Annotated List of Reviewed Data
and Reports
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 650, Packet Page 750 APPENDIX C: ANNOTATED LIST OF REVIEWED DATA AND REPORTS This SWRP Appendix includes the Annotated List of Reviewed Data and Reports, as required by Grant Task 3.1. The deliverable is organized as follows:

Attachment A: Annotated List of Reviewed Data
The Annotated List of Reviewed Data includes the geospatial information system (GIS) and other data provided by cooperating entities that will be used to conduct the analyses for the SWRP. The list includes the data type, the source, the spatial coverage, and other relevant information. The “required”, “recommended”, and “optional” notes correspond to how critical the data is to complete the proposed analyses.

Attachment B: Annotated List of Plans and Reports
The Annotated List of Plans and Reports summarizes plan and report documents used for the development of the SWRP. Each plan and report included is summarized by their title, the organization (i.e., lead author), year published, a description, the study or report type, and the benefits applicable to the report. The study or report type and the benefits applicable to the report are included by “Y” (yes) or “N” (no) in columns included in Table 1 below. Descriptions of each of the columns are also provided in Table 1.

Table 1: Columns Included in Annotated List of Plans and Reports and Associated Descriptions
Annotated List of Plans and
Reports – Table Column
Header
Column Description
Existing Conditions Discusses existing conditions and/or goals more generally at the watershed scale.

Watershed reports Watershed characterization studies/ plans/ assessments or reports Watershed stewardship Watershed stewardship manuals
Floodplain management Floodplain management plans
Water Management Water management plans (including potable/non-potable water use studies) Stream Restoration Stream restoration plans and/or in-stream project plans/reports Stormwater/LID Stormwater or LID management plans/ master plans/ guidance General Plans General Plans and Specific Plans (for development/redevelopment projections)
Water Projects/CIP Lists Flood/ Water Treatment/ Wastewater Projects or CIP lists Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 651, Packet Page 751 C-1
Annotated List of Plans and
Reports – Table Column
Header
Column Description
Water Quality Study Stormwater quality studies and/or TMDL implementation studies, or ASBS Studies
Other Other
Water Quality Water Quality (related to reducing pollutant loads) Water Supply Water Supply (related to water supply augmentation) Flood Control Flood Control (related to minimizing or mitigate a flood or inundation risk) Environmental Environmental Benefit (relates to providing habitat, urban forestry, mitigate heat island effects, restore watershed function)
Community
Community Benefit (relates to improvement of public spaces, provide parks and play areas, improve community aesthetics, improve pedestrian or bicycle safety)
*****
Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 652, Packet Page 752 C-2
Attachment A: Annotated List of Reviewed Data
Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 653, Packet Page 753 C-3
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Received Data (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants
Type Source Required / Recommended / Optional Received / Create Notes Comprehensive Regionwide Coverage Multi-jurisdictional, but Not Comprehensive Regionwide Coverage Unincorporated Monterey County Monterey Pacific Grove Sand City Carmel Del Rey Oaks Seaside Political boundaries (eg, council districts, city boundaries) Local jurisdictions, US Census Required Received XX X X X X X X Road centerlines Local jurisdictions, US Census Required Received XX X XWater utility boundaries MPWMD Required Received X Disadvantaged Community (DAC) boundaries US Census Required Public data downloaded XRegional Park Boundaries AMBAG, California Protected Areas Database Required Received X State/National Park boundaries
AMBAG, Local jurisdictions, US Census, US Bureau of Land Management, California Protected Areas Database Required Received or downloaded. X X
Rights-of-Way boundaries (polygon) Local jurisdictions Recommended Received from jurisdictions as indicated XXMunicipality owned, maintained, operated areas (polygon) Monterey County Assessor Optional Received X Water and Wastewater District Boundaries Optional Received XBuilding footprints Local jurisdictions Optional Received from jurisdictions as indicated X LiDAR MPWMD Required Received, can supplement with USGS data Large coverage of western coastal portion of county, but does not cover portions of Seaside X
Digital Elevation Models (DEMs) USGS Required Public data downloaded, not received from local jurisdictions X Contours MPWMD, local jurisdiction Required Received from jurisdictions as indicated Will use to supplement LiDAR data received XX Contours USGS Required Derived from USGS DEM Will use to supplement LiDAR data received XParcels with Land Use and Ownership only Local jurisdictions, AMBAG, Monterey County Assessor Required Received X XX X X Parcels with Land Use, Ownership, and Zoning Local jurisdictions Optional Received from jurisdiction as indicated X Parcels with Land use and Zoning only Local jurisdictions Optional Received from jurisdiction as indicated X Parcels with Land Use only Local jurisdictions Optional Received from jurisdictions as indicated XXSchools Geosyntec Recommended Geosyntec developed this data for all local jurisdictions and portions of unincorporated Monterey County through trash management project.

X
Parks Geosyntec Recommended
Geosyntec developed this data for all local jurisdictions and portions of unincorporated Monterey County through trash management project.

X
Impervious cover (w/ any attributes such as feature type) Recommended Not receivedPlanned Areas Recommended Not received Specific Plan Areas Recommended Not receivedGeneral Plans Recommended Not receivedStreams/Rivers/Waterbodies Local jurisdictions, AMBAG, State / Federal public data Required Received XX X X X 303(d) Streams/Rivers/Waterbodies Federal public data Required Received X Watersheds AMBAG, Central Coast Regional Water Quality Control Board Required Received X Locally-derived soil/geology/ hydrogeology/ geotechnical coverages Local jurisdiction, MPWMD, USGS Required Received X X
Administrative DatasetsElevation Datasets (one or more of the following, based on best available)Land Use DatasetsEnvironmental Datasets (GI siting and sizing) 1 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 654, Packet Page 754 C-4
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Received Data (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants
Type Source Required / Recommended / Optional Received / Create Notes Comprehensive Regionwide Coverage Multi-jurisdictional, but Not Comprehensive Regionwide Coverage Unincorporated Monterey County Monterey Pacific Grove Sand City Carmel Del Rey Oaks Seaside County specific rain gauge locations NOAA Required Public data downloaded Public hourly data downloaded X Depth to groundwater with date of sampling CASGEM Required Public data downloaded; not received from local jurisdictions or agencies Point data at various wells in Monterey County. Comprehensive regionwide coverage may not exist X
Local flood inundation or flood risk areas FEMA Required Public data downloaded; not received from local jurisdictions or agencies X County specific rain gauge locations MPWMD Recommended Partially received; can supplement with public data Limited daily recods from the Navy Postgradaute School and MPWMD Office. MPWMD data needs to be digitized X
Mapped contaminant plumes or contaminated sites Optional Not receivedRainfall isohyetal maps MPWMD Optional Received X Habitat protection areas or similar designations AMBAG, US Fish and Wildlife, local jurisdiction Optional Received Unsure if data is comprehensive X X Natural resource areas or similar designations AMBAG, US Fish and Wildlife Optional Received Unsure if data is comprehensive XArchaeologically Sensitive Areas Local Jurisdictions Optional Partially Received XX Storm Drains Network (inlets, outfalls, open channels and gravity mains) Local jurisdictions Required Received X XX X X X X X Reservoirs USEPA / USGS Required Public data downloaded; not received from local jurisdictions or agencies National Hydrography Dataset Plus (NHDPlus). Unsure if data is comprehensive. X Flow gage locations (storm drains and channels) USGS Required Public data downloaded; not received from local jurisdictions or agencies Channels only X Runoff Rate (by catchment) SWTELR Required Received from existing SWTELR data X Pollutant Loading (by catchment) SWTELR Required Received from existing SWTELR data XCatchment/Sub-basin/Drainage Areas to Outfalls if available Local jurisdictions Recommended Received from jurisdictions as indicated X X X XX X X Existing or Proposed (eg CIP) structural BMPs by type Local jurisdictions Recommended Received from jurisdictions as indicated X X X XX X Discharge Points Local jurisdictions Optional Received from jurisdictions as indicated X X XX X X Operations and maintenance (inlet offsets, trash removal/cleanout records) Local jurisdictions Optional Received from jurisdiction as indicated X Trash priority areas Geosyntec Optional Developed by Geosyntec Comprehensive coverage in all local jurisdictions and portions of Unincorporated Monterey County X
Water Quality Data Urban Watch Optional In Progress Data request pending with Urban Watch XLocations of water treatment facilities (and locations of distribution lines which convey water from source to treatment facility) Optional Not received
Proposed road diets or similar designations Optional Not receivedStormwater/Water Quality Program DatasetsTransportation Planning Datasets Full coverage of all jurisdictions and partial coverage of unincorporated Monterey County. Catchment areas may not match other received catchment data. 2 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 655, Packet Page 755 C-5
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Received Data (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants
Type Source Required / Recommended / Optional Received / Create Notes Comprehensive Regionwide Coverage Multi-jurisdictional, but Not Comprehensive Regionwide Coverage Unincorporated Monterey County Monterey Pacific Grove Sand City Carmel Del Rey Oaks Seaside Proposed complete streets or similar designations Optional Not receivedProposed bicycle networks or similar designations Optional Not receivedProposed pedestrian networks or similar designations Optional Not receivedSafe routes to school networks Optional Not receivedAny available information MPWMD Optional Received Carmel River area only XGravity mains Local jurisdictions, Monterey One Water Required Received from jurisdictions as indicated XX X X X Pump stations Local jurisdicitons Required Received from jurisdictions as indicated No pump stations expected in unincorporated Monterey County

X X XX X X
Waste water treatment plants Recommended Not received
Waste water treatment plant effluent lines (ocean outfalls, groundwater replenishment, recycled purple pipe water lines) Recommended Not received
High Resolution Aerial ImagerySanitary Sewer Datasets
3 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 656, Packet Page 756 C-6
Attachment B: Annotated List of Plans and Reports
Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 657, Packet Page 757 C-7
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Stormwater Tool to Estimate Load Reduction Draft Final Technical Document 2NDNATURE 2016 Manual describing the use of the Tool to Estimate Load Reductions (TELR). NNNNNNNNNNNYYNNN AACE Classification System AACE International 2005 Cost estimate classification system for engineering, procurement, and construction costs NNNNNNNNNNYNNNNNCoastal Regional Sediment Management Plan for Southern Monterey Bay (2008) Association of Monterey Bay Area Governments
2008
Summarizes the Southern Monterey Bay Coastal Erosion Workgroup’s list of potential ways of addressing coastal erosion in the area, and evaluates the applicability of those technologies in the near future. Report proposes feasibility studies for proposed projects.

YYNYNNNYNNNNNYYN
Monterey Bay Area Regional Forecast Population, Housing Unit and Employment Projections for Monterey, San Benito and Santa Cruz Counties to the Year 2035 (2008) Association of Monterey Bay Area Governments
2008
A regional forecast of population, housing and employment for the Monterey Bay region. The forecast is used to provide data support for long term regional planning documents, special districts’ master plans, as well as to support city and county long range planning. Mentions, but does not detail, current and planned Water District projects.

NNNNYNNNYNNYYNNN
Coastal Regional Sediment Management Planning in Southern Monterey Bay, California (2011) Association of Monterey Bay Area Governments
2011
This paper presents the findings of the Coastal Regional Sediment Management (RSM) Plan developed to address erosion in the Bay. The Plan first evaluates the sedimentary processes, erosion rates and sensitive species and habitat along the coast. Those data sets are then combined with economic, ecological, and societal considerations, to identify critical areas of erosion and to propose RSM-based solutions.

YYNNNNNNNNNNNYYN
Monterey County Williamson Act FY 2015-16
Association of Monterey Bay Area Governments
2016 Map of agricultural land as defined by the Williamson Act. NYNNNNNNNNNNNNYY Carmel River Floodplain Restoration and Environmental Enhancment Project - 35% Design Basis Report Big Sur Land Trust 2015 Design Report describing the Floodplain Restoration and Enviornmental Enhancement Project YYNYNNNNYYNYNYYY Restoration and Management Plan for the Carmel River Floodplain Restoration and Environmental Enhancement Project Big Sur Land Trust 2015 Summary of the Plan for the Carmel River Floodplain Restoration and Environmental Enhancement Project. NNNNNNNNNYNNNNNY CalAm Monterey Peninsula Water Supply Project Draft EIR California American Water 2015 Draft EIR for Monterey Peninsula Water Supply Project to develop up to 9,752 ac-ft/yr of water supplies for CalAm's Monterey District Service Area. NNNNYNNNYNNNYNNN 1 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 658, Packet Page 758 C-8
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Urban Water Management Plan for the Central Division – Monterey County District (2015) California American Water 2015
Meets a requirement for the California Urban Water Management Planning Act. Provides information for Water Supply Assessments and Written Verifications of Water Supply, supports regional long-range planning documents including City and County General Plans, provides standard methodology for water utilities to assess their water resource needs and availability.

NNNNNNYNNNNNYNNN
Memorandum - Recommended Capacity for the Monterey Peninsula Water Supply Project (MPWSP) Desalination Plant (2013) California American Water 2013
Summarizes design capacity for desalination plant for the Monterey Peninsula Water Supply Project (MPWSP), which will become the principal supply for CAW’s system, replacing a major portion of the supply from the Carmel River and the Seaside Groundwater Basin.

NNNNYNNNYNNNYNYN
The Impacts of Sea-Level Rise on the California Coast (2009) California Climate Change Center
2009 Summarizes potential impacts of sea level rise on the California Coast, including analysis of current population, infrastructure, and property at risk from projected sea level rise. YNNNNNNNNNYNNYYY Monterey County Important Farmland (2010)
California Department of Conservation
2010 Map of agricultural land in Monterey Peninsula. NYNNNNNNNNNNNNYY What will be the Cost of Future Sources of Water for California? California Public Utilities Commission
2016 Paper provides examples of various costs for sources of water throughout California. NNNNYNNNNNNNYNNN Model-Based Prediction of the effect of development on increased runoff and mitigating effec ponds- a case study of Canyon del Rey Creek California State University Monterey Bay
2013 HEC-HMS model results for Canyon del Rey creek YYNNNNNNNNNYNYNN Model-Based Prediction of the effect of development on peak flowsCanyon del Rey watershed California State University Monterey Bay
2013 HEC-HMS model results for Canyon del Rey watershed YYNNNNNNNNNYNYNN Model-Based Prediction of the effect of developmentof the Del Rey Oaks portion of former Fort Ord on peak flows - Arroyo Del Rey, Monterey County, CA California State University Monterey Bay
2013 HEC-HMS model results for Del Rey Oaks portion of Arroyo Del Rey YYNNNNYNNNNNNNNN Stormwater Best Management Practices Handbook New Development and Redevelopment California Stormwater Quality Association
2003 CASQA BMP Manual NNNNNNYNNNNYYYNN
Land Use History and Mapping in California's Central Coast Region (2003) Central Coast Watershed Studies
2003 Provides a history of land use and changes over time in the Cities of Seaside and Monterey. NYNNNNNNNNNNNNNY 2 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 659, Packet Page 759 C-9
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Physical and Hydrologic Assessment of the Carmel River Watershed California (2004) Central Coast Watershed Studies
2004
The report documents the present hydrologic and physical condition of the Carmel Watershed. The descriptions and interpretations are based upon digital, aerial, and land-based views, and a review of the regional literature. The report provides an overview of geology, climate, hydrology, and susceptibility to landslides and erosion. Following those broad descriptions, each subwatershed of the Carmel River is analyzed in more detail. Lastly, recommendations for future watershed management strategies are provided.

YYYYNYYNNNNYNYYN
Stormwater outfall watershed delineation, land cover characteristics, and recommended priorities for monitoring and mitigation in the City of Pacific Grove, California Central Coast Watershed Studies
2011
This study was conducted as part of a class project by students in the Advanced Watershed Science and Policy (ENVS660) course at California State University at Monterey Bay. The primary objectives of this study were to 1) research and review the historical and regulatory context for stormwater management within the City of Pacific Grove, California, 2) provide mapping of all major stormwater outfalls with the City limits, 3) conduct a Geographic Information Systems (GIS) analysis to delineate the surface watershed of each of the major stormwater outfalls, 4) quantify the characteristics of those watersheds, and 5) provide recommendations for future monitoring and stormwater mitigation activities.

YNNNYNYNNYNYNNYY
Streamflow gaging at Greenwood Park, Pacific Grove, California: January-April 2012 Central Coast Watershed Studies
2012
This report describes work done by staff & students at the Watershed Institute (CSUMB) for the Monterey Bay Sanctuary Foundation and the City of Pacific Grove. The overall scope of work was to gage stormwater flow above and below Greenwood Park in the City of PG during the winter of 2011-12.

YNNNNNNNNYNNNNNN
Understanding Stormwater Management Options Using a Water Balance Framework Central Coast Watershed Studies
2013
This study was conducted as part of a class project by students in the Advanced Watershed Science and Policy (ENVS660) course at California State University at Monterey Bay. The primary objectives of this study were to 1) Develop an annual water balance examining the effects of different components of the water cycle in the small, medium, and large storm seasons, as well as in the dry season, 2) Estimate the percentage of stormwater that could be diverted or treated before reaching the ASBS during small, medium and large storms under three potential management scenarios, and 3) Estimate the percentage of stormwater that could be retained or treated using low impact development (LID) based on land use type and stormwater runoff during small, medium, and large storms.

YNNNYNYNNYNYNNYY
An Existing Conditions and Droughtyear Stormwater Quality Study of Majors Creek: Monterey, CA (2014) Central Coast Watershed Studies
2014
Examines why Majors Creek was listed on the 303(d) list and outlines a plan to remove the Creek from the list, delineates the watershed, summarizes water quality sample results from monitoring conducted, analyzes management and improvement strategies using the Watershed Treatment Model, and documents the physical condition of the Creek.

YYNNNYNNNYNYYNYN
3 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 660, Packet Page 760 C-10
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Stormwater mapping and land use analysis, City of Del Rey Oaks, California Central Coast Watershed Studies
2015
In support of the Del Rey Oaks PEAIP, we used a Global Positioning System (GPS) unit to collect locations of unmapped storm drain inlets and outfalls, and verified locations of currently mapped inlets and outfalls. We compiled metadata identifying the type and size of outfalls, and photographed inlets and outfalls. We conducted storm drain watershed (stormshed) delineations to aid in the understanding of stormwater routing within Del Rey Oaks. Land use areas within each stormshed were calculated to identify areas of priority where increased pollution in runoff may occur. We identified potential mitigation areas in the city where runoff and pollution may be diminished. These efforts will support the necessary next steps for Phase II compliance.

YNNNNNYNNYNYNNNN
Developing Adaptive Management Tools for the Carmel River Floodplain Restoration and Environmental Enhancement Project Central Coast Watershed Studies
2016
This report was a class project conducted by students in the Advanced Watershed Science and Policy (ENVS 660) course at California State University Monterey Bay (CSUMB). ENVS 660 partnered with the Big Sur Land Trust (BSLT) to plan for long term planting and management of the Tier 2 restoration of the Carmel River Floodplain Restoration and Environmental Enhancement (FREE) project, located within the lower Carmel River Watershed in Monterey County, California.

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Effects of Local Runoff on Water Levels and Water Quality in the Carmel River Lagoon During DryRiver Periods Central Coast Watershed Studies
2016
This was a class project conducted by students in the Advanced Watershed Science and Policy (ENVS 660) course at California State University at Monterey Bay (CSUMB). Our goal was to determine how local runoff influences water levels and WQ in the CRL during the river not connected (RNC) season.

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Stormflow monitoring and modelling at Pacific Grove, California, 2012 and 2015 Central Coast Watershed Studies
2016
This report describes work done by staff and students at the Watershed Institute (CSUMB) for the City of Pacific Grove. The overall scope of work was to measure stormwater flow in the City of Pacific Grove within diverse watersheds, and to use a data-driven modeling approach to estimate current stormflow and predict future stormflow under specific stormwater control measures (SCMs).

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Pacific Grove Area of Special Biological Significance (ASBS) Revised Final Compliance Plan (2016) Cities of Monterey and Pacific Grove
2016
Demonstrates how the Cities of Pacific Grove and Monterey will comply with the Special Protections for Beneficial Uses of the ASBS. The Pacific Grove ASBS extends for 3.2 miles along the Pacific Grove shoreline west from the Monterey Bay Aquarium to Asilomar Boulevard just before Point Pinos, with close to 500 ocean acres within the Monterey Bay National Marine Sanctuary (MBNMS). The Pacific Grove ASBS receives runoff from approximately 1,106 acres in Pacific Grove and 101 acres in Monterey.

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40% Design Engineering Report Stormwater Management Project Cities of Pacific Grove and Monterey
2014
This project addresses stormwater discharges into the Pacific Grove Area of Special Biological Significance (ASBS), which receives urban runoff from the New Monterey District in the City of Monterey and from the City of Pacific Grove. Over the past several years, the Cities of Monterey and Pacific Grove have been evaluating alternative stormwater management projects to address regulatory requirements imposed by the State Water Resources Control Board (SWRCB) for stormwater discharges to the ASBS.

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City of Marina General Plan (2010) City of Marina 2010 General Plan for future new and re-development in the City of Marina NNNNNNNYNNNYNNNY 4 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 661, Packet Page 761 C-11
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Final Environmental Impact Report - City of Monterey General Plan Update (2004) City of Monterey 2004 Impact report for City of Monterey General Plan for new and re-development build out NNNNNNNYNNNYNNNY City of Monterey General Plan (2005)
City of Monterey 2005 General Plan for future new and re-development in the City of Monterey NNNNNNNYNNNYNNNY Final Environmental Impact Report for the 2010 Draft City of Monterey General Plan Update (2010) City of Monterey 2010 Impact report for City of Monterey General Plan for new and re-development build out NNNNNNNYNNNYNNNY Engineering Analysis Development of Non-potable Irrigation Water Systems (1999) City of Monterey 1999 Identifies properties where non-potable water could be utilized, and evaluates the feasibility of developing non-potable supply sources to serve these properties. YNNNYNNYNNNNYNYY Land Use Plan for the Laguna Grande/Roberts Lake Local Coastal Program (Addendum) (2000) City of Monterey 2000 Change in land use designation to land use around Laguna Grande/Roberts Lake NYNNYNNNNNNNNNNY Del Monte Beach Land Use Plan (2003)
City of Monterey 2003
Fulfills a mandate of the California Coastal Act. Establishes policies regarding habitat preservation, coastal erosion, land use designations and public access to Del Monte Beach. Also identifies issues of importance to residents and property owners in the beach area.

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Monterey Harbor Land Use Plan (2003)
City of Monterey 2003
Land Use Plan provides the specific goals, policies, and implementation actions that govern land and water use within the coastal zone. The Land Use Plan together with its implementing measures (Coastal Implementation Plan, or CIP) constitute the Local Coastal Program.

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Groundwater Replenishment Project Urban Runoff Capture at Lake El Estero (2014) City of Monterey 2014
Plan describes a proposed project which involves diversion of stormwater flows into the sanitary sewer system, which will be used as a source of water supply for the Pure Water Program following treatment.

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Final Sea Level Rise and Vulnerable Analyses, Existing Conditions and Issues Report City of Monterey 2016 Study examining the potential impact of sea level rise on the Monterey Coast within the Monterey Peninsula region, including model results. YYNYNNNNYNNNNYNY Alternatives Analysis and Data Acquisition for Pacific Grove and Carmel Bay Areas of Special Biological Significance (2006) City of Monterey Public Works
2006
This report presents the results of alternatives analysis and data acquisition for storm water and non-storm water discharges to the Pacific Grove Area of Special Biological Significance (ASBS) and the Carmel Bay ASBS. (MACTEC) performed the study to assess the feasibility of diverting, storing, treating, and/or reusing storm water from the Del Monte Forest, the New Monterey section of the City of Monterey, and the City of Pacific Grove, and preventing these storm water and non-storm water discharges from entering the Pacific Grove and Carmel Bay ASBS.

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Pacific Grove General Plan (1994) City of Pacific Grove 1994 General Plan for new and re-development in the City of Pacific Grove. NNNNNNNYNNNYNNNY 5 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 662, Packet Page 762 C-12
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
City of Pacific Grove Urban Runoff Diversion Project Phase II Final Report - SWRCB Agreement No. 02-227-50-1 City of Pacific Grove 2008 The project diverts the 8th Street and 17th Street storm drain outfalls to the Monterey One Water sanitary sewer system during the dry season. YYNNYNYNNYNYNNYN Local Water Project Draft Facility Plan Report WRFP No. 3316-010 City of Pacific Grove 2014
The City of Pacific Grove is pursuing the construction and operation of a Satellite Recycled Water Treatment Plant (SRWTP) to produce recycled water for non-potable water demands in the City of Pacific Grove with future capability to expand to service other local demands outside of the City. This study documents the work conducted in support of this effort as part of the City of Pacific Grove Local Water Project (PGLWP). See Chapter 4 for analysis of potential non-potable water use sites.

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Monterey Pacific Grove ASBS Stormwater Management Project Final EIR City of Pacific Grove 2014 Final EIR for the Monterey/ Pacific Grove ASBS Stormwater Management Project. YYNNNNYNYYNYNNYY City of Pacific Grove Urban Greening Plan
City of Pacific Grove 2016
This Urban Greening Plan identifies projects, plans, policies, and programs the City of Pacific Grove (City) can implement to achieve numerous environmental and community benefits. For example, green spaces can help to reduce flooding and improve stomwater quality, provide wildlife habitat, help maintain air quality, reduce urban heat islands, and provide gathering spaces for neighborhood socializing and community building.

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Pacific Grove Low Impact Development (LID) Infrastructure Plan (2016) City of Pacific Grove 2016
The City of Pacific Grove applied for and was awarded a Proposition 84 Grant to develop an Urban Greening Plan. The LID Plan (scheduled to begin in 2016) will consist of initial planning and conceptual design of priority areas for green infrastructure and the urban forest to implement stormwater treatment measures.

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Master Plan for Improvements to the Regionla Storm Drainage System Final Report City of Seaside 2001
The Preliminary Design Report (FDR), Fort Ord Reuse Authority (FORA) Stormwater Infrastructure- Phase 1, is based on the engineering work funded through EDA Technical Assistance Grant Award No. 07-79-03954. The TA Grant was awarded to assist in a master planning effort for storm drainage on the former Fort Ord and to eliminate the existing ocean outfalls on lands to be transferred to the State of California, Department of Parks and Recreation. Removal of the outfalls requires the development of alternate means of stormwater disposal.

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Seaside General Plan (2003) City of Seaside 2003 General plan for future new and re-development for Seaside. NYNNYNNNNNNNNNNYSeaside General Plan EIR (2004) City of Seaside 2004 EIR General plan for future new and re-development for Seaside. NYNNYNNNNNNNNNNYSeaside East Conceptual Master Plan (2010) City of Seaside 2010 General plan for future new and re-development for Seaside. NYNNYNNNNNNNNNNYCity of Seaside Local Coastal Program (2013) City of Seaside 2013 Land Use Plan provides the specific goals, policies, and implementation actions that govern land and water use within Seaside’s coastal zone. The Land Use Plan together with its implementing measures (Coastal Implementation Plan, or CIP) constitute the Local Coastal Program.

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6 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 663, Packet Page 763 C-13
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Seaside Stormwater Master Plan Update – Phase 1 (2014) City of Seaside 2014 Plan to investigate and address system deficiencies by developing improvement projects, an O&M and inspection program, and a stormwater utility fee study. The storm drain collection system serves the City of Seaside including Seaside proper, Seaside Highlands and Presidio of Monterey Annex (POMA).

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Infiltration and Groundwater Recharge Estimate for the Seaside Coastal Subareas Fall Creek Engineering, Inc 2015 Study to examine areas conducive to recharging the Seaside Groundwater Basin and potential recharge amounts NNNNNNNNNNNNYNYN Fort Ord Reuse Plan (1997) Fort Ord Reuse Authority 1997 Focuses on the concepts for and elements of re-development of the former Fort Ord military reservation, including the history of the site, current conditions, market opportunities, reuse considerations, environmental impact, and integration into the regional economy. YYNNYNNYNYNYYNYYFort Ord Storm Water Master Plan (2005) Fort Ord Reuse Authority 2005 Summarizes existing infrastructure and hydrologic conditions for the former Fort Ord cantonment area and provides guidelines for the on-site infiltration obligation. YYNNNNYNNYNYNYNN Fort Ord Reuse Plan Reassessment (2012)
Fort Ord Reuse Authority 2012
Describes topics and potential options for modifications to the Fort Ord Base Reuse Plan or to the Fort Ord Reuse Authority’s operational procedures. The reassessment was mandated through a lawsuit settlement with the Sierra Club, and involved information gathering from the public and reevaluation of the plan’s policies and programs.

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Water Storage in the Seaside Basin - Memorandum
From District Counsel to Chairmain, Board Members, and General Manager 2007 Memorandum to describe the process to store water in the Seaside Basin in light of the Superior Court Decision in California American Water v. City of Seaside et al, Case No. M66343. NNNNYNNNNNNNYNNN Resistivity imaging reveals complex pattern of saltwater intrusion along monterey coast M. Goebel, A. Pilisecky, R. Knight
2017 Journal article summarizing a study to examine saltwater intrusion along the coast of Monterey adjacent to the Seaside Groundwater basin. YYNNNNNNNNNYYNYN Regional Urban Water Augumentation Project, Final Environmental Impact Report Marina Coast Water District 2004
The Regional Water Augmentation Project proposes to provide an additional water supply of 2,400 acre-feet per year (AFY) for the Ord Community area (also known as the former Fort Ordmilitary base) as identified in the Fort Ord Reuse Plan (FORP).

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Marina Coast Water District Urban Water Management Plan (2005) Marina Coast Water District 2005 Overview of water management plan for Marina Coast Water District municipal water supplier. YNNNYNYYYYNYYNNN Regional Urban Water Augumentation Project, Addendum No. 1 to Environmental Impact Report Marina Coast Water District 2006
The Regional Water Augmentation Project proposes to provide an additional water supply of 2,400 acre-feet per year (AFY) for the Ord Community area (also known as the former Fort Ordmilitary base) as identified in the Fort Ord Reuse Plan (FORP).

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7 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 664, Packet Page 764 C-14
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Regional Urban Water Augumentation Project, Addendum No. 2 to Environmental Impact Report Marina Coast Water District 2007
The Regional Water Augmentation Project proposes to provide an additional water supply of 2,400 acre-feet per year (AFY) for the Ord Community area (also known as the former Fort Ordmilitary base) as identified in the Fort Ord Reuse Plan (FORP).

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Final Public Review RUWAP Shared Pipeline Addendum EIR
Marina Coast Water District 2016 Addendum to the Regional Urban Water Augmentation Project EIR, compiled by City of Marina. NNNYNNNNNNNYYNNN Marina Coast Water District Urban Water Management Plan (2015) Final Marina Coast Water District 2016 Overview of water management plan for Marina Coast Water District municipal water supplier (update) YNNNYNYYYYNYYNNN Regional Urban Water Augumentation Project, Addendum No. 3 to Environmental Impact Report Marina Coast Water District 2016
The Regional Water Augmentation Project proposes to provide an additional water supply of 2,400 acre-feet per year (AFY) for the Ord Community area (also known as the former Fort Ordmilitary base) as identified in the Fort Ord Reuse Plan (FORP).

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Monterey Bay Aquarium (MBA) - Storm Water and Waterfront Management Plan (2014) Monterey Bay Aquarium 2014
Fulfills MBA’s Ocean Plan Exception requirements for both a Storm Water and Waterfront Management Plan and to protect the ocean water quality of the ASBS. Plan goals include: 1) ensuring seawater effluent locations do not contain constituents in exceedance of the Ocean Plan, 2) eliminating dry weather flow from our facility, 3) utilizing best management practices to improve the quality of storm water runoff, and 4) practicing safe waterfront operations

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Monterey Bay National Marine Sanctuary Final Management Plan (2008) Monterey Bay National Marine Sanctuaries
2008 Management Plan for the Monterey Bay National Marine Sanctuary YYYNNNNNNYNYNNYN Monterey Bay National Marine Sanctuary Condition Report (2009) Monterey Bay National Marine Sanctuaries
2009 Description of the condition of the Monterey Bay National Marine Sanctuary YYYNNNNNNYNYNNYN Strategic Plan for Central Coast Water Quality Monitoring Coordination and Data Synthesis (2009) Monterey Bay National Marine Sanctuary
2009 Strategic Plan to improve regional capacity to coordinate monitoring, synthesize information, communicate, and respond with adaptive management for monitoring on the Central Coast. YYYNNNYNNNNYNNYN Preparing for the Future: Climate Change and the Monterey Bay Shoreline (2011) Monterey Bay National Marine Sanctuary
2011 Summary of a Monterey Bay region-wide gathering on climate change adaptation. YYNYNNNNNNNNNYYN 8 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 665, Packet Page 765 C-15
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Comparison of the Six Central Coast Integrated Regional Water Management Plans and Recommendations for Collaborative Programs (2008) Monterey Bay National Marine Sanctuary
2008
This document compares the six IRWMPs that have been developed for the Central Coast region with the goal of identifying the major priorities of each plan and common interests and concerns. It is meant to facilitate coordination between the individual public agency plans, programs, and projects within each IRWMP region.

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Central Coast Water Quality Data Assessment (2008)
Monterey Bay National Marine Sanctuary/Sanctuary Integrated Monitoring Network 2008
The purpose of this data assessment was to characterize existing and accessible water quality data sets, evaluate their applicability to fundamental questions about non-point source pollution on the Central Coast, and identify important water quality and other data gaps.

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Monterey Economic Forecast (2011) Monterey County 2011 Presents national, state, and local economic forecasts for the County of Monterey, as well as descriptions of the state of business, agriculture, real estate, and demographics in the County. NNNNNNNNNNNNYNNNCarmel River Watershed Stewardship Manual (2013) Monterey County Resource Management Agency
2013
The purpose of this manual is to provide techniques to support solutions for many of the resource issues (e.g. erosion, groundwater overdraft, invasive plants) experienced in the Carmel Valley. Techniques range from roof runoff management to rural road erosion control to wildlife-friendly pond and pasture management.

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Carmel Bay Area of Special Biological Significance (ASBS) Draft Compliance Plan (2014) Monterey County Resource Management Agency
2014
Plan describes how the Carmel Bay ASBS watershed that is under County jurisdiction will comply with the Special Protections for Beneficial Uses of the ASBS. It addresses the portion of the Carmel Bay ASBS watershed that is under County jurisdiction and subject to the Phase II Small MS4 General Permit. The ASBS encompasses 1,584 acres (6.7 miles of coastline) of various coastal marine habitats between Pescadero and Granite Points, and is entirely overlapped by the Carmel Bay State Marine Conservation Area.

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Greater Monterey Peninsula Area Plan (1995)
Monterey County Resource Management Agency
1995 Outlines current conditions and implementation plans for the Monterey Peninsula, touching on natural resources, environmental constraints, human resources, and development in the area. YYNYNNNYYYNYYYYY Fishery Analysis for the Carnel River Lagoon Biological Assesment Report Monterey County Resource Management Agency
2014 Analyses of environmental and other factors at the Carmel River Lagoon to fish populations in the Carmel River. YYNYNYNNNYNYNYYN 9 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 666, Packet Page 766 C-16
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Memorandum of Understanding for the Construction Phase of the Carnel River FREE Project Monterey County Resource Management Agency, Big Sur Land Trust 2017
MOU between the Monterey Peninsula Regional Park District and the Monterey County Resource Management Agency/ Big Sur Land Trust for Constructing the Floodplain Restoration and Envionmental Establishment Project on the Carmel River.

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Monterey County Water Resources Agency Act (1995)
Monterey County Water Resources Agency
1995 Act to provide for control of flood and stormwater for Monterey County. NNNYNYYNNNNYYNNN Monterey County Groundwater Management Plan (2006)
Monterey County Water Resources Agency
2006
This report establishes a set of management objectives for the basin, describes existing conditions, outlines historical and projected water demands in the basin, and presents a set of general groundwater management actions.

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Monterey County Floodplain Management Plan (2008)
Monterey County Water Resources Agency
2008 This is an update of a 2002 report identifying the flooding sources affecting Monterey County, and establishing an implementation plan to reduce flood hazards. YYNYYNYNYYNNNYYN Monterey County Floodplain Management Plan (updated 2014) Monterey County Water Resources Agency
2014
Completed as part of the FEMA NFIP Community Rating System. Intended to assess the flooding hazards within unincorporated areas of Monterey County and summarize floodplain management program and mitigation strategy within the county. Areas included in the plan are: Carmel, North County, Carmel Valley, Greater/Central Salinas, Del Monte Forest/Big Sur, Monterey Peninsula, South County.

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Pure Water Monterey Groundwater Replenishment Project, http://purewatermonterey.org/ Monterey One Water 2014 Website for the Monterey Peninsula Groundwater Replenishment Project. YNNNYNNNYNNNYNNN Section IV: Operations and Maintenance Program of the Sewer System Management Plan Monterey One Water 2014 Summary of the O&M Program for the Sewer System Management Plan NNNNYNYNYNNYYNNN Consolidated Final Environmental Impact Report for the Pure Water Monterey Groundwater Replenishment Project Monterey One Water 2016 Final EIR for the Pure Water Monterey Recycled Water Project, located at the Regional Treatment Plant on the Monterey Peninsula. YNNNYNNNYNNNYNNN 10 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 667, Packet Page 767 C-17
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Grant Agreement between Monterey Peninsula Water Management District and the City of Monterey for Local Water Project Development Expenses (Water Recovery Study) Monterey Peninsula & The City of Monterey
2016 Grant Agreement for the Water Recovery Study NNNNYNYNYYNNYNNN San Jose Creek Watershed Assessment (2014)
Monterey Peninsula Regional Park District
2014 Assessment of the watershed draining to San Jose Creek. YYNNNNNNNYNYNNYN Aquifer Storage and Recovery Project, Environmental Impact Report Monterey Peninsula Water Management District
2006
The ASR project would allow diversion of a limited amount of flow from the Carmel River during high flow conditions for storage in, and later recovery from, the Seaside Groundwater Basin.

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Study Plan for Long Term Adaptive Management of the Carmel River State Beach and Lagoon (2007) Monterey Peninsula Water Management District
2007
Summary of analyses to devize a Beach and Lagoon Management scheme to support both homeowners needing protection from potential flood inundation and protection of rare fish and amphibian species.

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Monterey Peninsula Water Management District Water Supply Charge (2012) Monterey Peninsula Water Management District
2012 Summary of MPWMD Supply Charge. YNNNYNNNYNNNYNNN
Monterey Peninsula Water Management District Annual Reports http://www.mpwmd.net/resources/annual-reports/ Monterey Peninsula Water Management District
2013 Website providing annual reports summarizing the MPWMD's previous year's goals, accomplishments, and other activitites. YNNNYNNNYNNNYNNN Monterey Peninsula Water Management District Mission, Vision & Goals http://www.mpwmd.net/whowe-are/mission-vision-goals/ Monterey Peninsula Water Management District
2013 Website summarizing MPWMD's mission statement. YNNNYNNNYNNNYNNN Canyon del Rey Master Drainage Plan – Draft (2014)
Monterey Peninsula Water Management District
2014
Presents an update to the Master Drainage Plan for Canyon del Rey originally prepared for the Monterey County Water Resources Agency in 1977. This updated plan accounts for changes in hydrologic and hydraulic conditions in the watershed, as well as the addition of new and updated flood management facilities. It also provides a new investigation and evaluation of sediment related processes in the watershed, including analyses of sediment transport, erosion, and deposition within the stream channel system.

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11 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 668, Packet Page 768 C-18
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Los Padres Dam and Reservoir LongTerm Strategic and Short-Term Tactical Plan (2014) Monterey Peninsula Water Management District
2014 Overview of Los Padres Dam History along with future plans for dam operation. YYNNYNNNYNNYYNYN Draft Monterey Peninsula, Carmel Bay and South Monterey Bay Integrated Regional Water Management Plan Update (2014) Monterey Peninsula Water Management District
2014 IRWM Plan update to address the major challenges and opportunities related to managing water resources within the Monterey Peninsula IRWM region (Region). NNNYYNYNYYNYYYYY Seaside Groundwater Basin Salt & Nutrient Management Plan (2014) Monterey Peninsula Water Management District
2014 Summary of the Salt and Nutrient Management Plan Prepared for the Seaside Groundwater Basin. NNNNYNNNNYNYYNNN Assessment of Previous Models, Data Inventory, and Development of a Conceptual Model for Simulating Flow in the Carmel River and its Alluvial Aquifer: Support Services for MPWMD’s IRWMP Project 8 (2015) Monterey Peninsula Water Management District
2015
The Carmel River Basin is found to fill to capacity every year due to Carmel River streamflow. There have been extensive studies conducted recently examining the Carmel Valley , particularly surface and groundwater interactions in the Basin. A detailed hydrologic model that links GSFLOW and MODFLOW has been developed and is undergoing calibration. The model simulates flows and diversions in the Carmel River and its alluvial aquifer.

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Carmel River Watershed Assesment and Action Plan 2016 update Monterey Peninsula Water Management District
2016 Update of the 2014 Action Plan YYNNYNNYYNNYYYYY
Summary of Operations Monterey Peninsula ASR Project WY 2016 Monterey Peninsula Water Management District
2016 Summary of operations of the Monterey Peninsula Aquifer Storage and Recovery (ASR) Project during Water Year 2016. NNNNYNNNNYNYYNNN Integrated Natural Resources Management Plan (Sept. 2013) Naval Support Activity Monterey
2013
The document charts the management and use of installation natural resources, establishes conservation priorities, and provides a basis for formulating budgets. The plan covers 1,000 acres of properties owned and managed by the Naval Support Activity Monterey.

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Presidio of Monterey Non-Potable Water Concept Plan (2013) Presidio of Monterey 2013 Study to determine potential to incorporate greywater applications as part of a sustainable water program. NYNNYNNNYNNYNYNN 12 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 669, Packet Page 769 C-19
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Stormwater characterization for reduction and reuse: Presidio of Monterey, California (2014) Presidio of Monterey 2014 The objective of the study is to determine the effectiveness of LID in stormwater management in the Presidio of Monterey. NYYYYN Draft California 2014 Integrated Report Region 3 Central Coast Regional Water Quality Control Baord Region 3 Central Coast Regional Water Quality Control Baord 2016 2014 303(d) list for the Central Coast Regional Water Quality Control Board NNNNNNNNNYNYNNNN Water Quality Control Plan for the Central Coastal Basin (2011) Regional Water Quality Control Board
2011
The Central Coast Basin Plan provides a summary of water quality standards for the Central coast region along with the various beneficial uses for water bodies present in the region. The Basin Plan also describes the programs, projects, and other actions needed to meet the standards, State and Regional Board plans and policies to protect water quality, and statewide and regional monitoring programs.

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Certification of Fecal indicator Bacteria TMDLs and Alternative Implementation Programs for Lower San Antonio River, Tularcitos Creek, Cholame Creek, San Lorenzo Creek, and Arroyo De La Cruz Watersheds Regional Water Quality Control Board, Central Coast Region 2011 TMDL for fecal indicator bacteria for Tularcitos Creek and other receiving water bodies NNNNNNNNNYNYNNNN Seaside Basin Monitoring and Management Program
Seaside Groundwater Basin Watermaster
2006 Summary of the monitoring and management plan for the Seaside Groundwater Basin. NNNNYNNNNYNYYNNN Seaside Groundwater Basin Modeling and Protective Groundwater Elevations (2009) Seaside Groundwater Basin Watermaster
2009 Summary of the results of the calibrated groundwater flow model of the Seaside Groundwater Basin. NNNNYNNNNNNNYNNN Water Year 2011 Seawater Intrusion Analysis Report – Seaside Basin, Monterey County California (2011) Seaside Groundwater Basin Watermaster
2011 This report addresses the potential for, and extent of, seawater intrusion in the Seaside Groundwater Basin. YYNNNNNNNNNYYNYN Water Year 2014 Seawater Intrusion Analysis Report – Seaside Basin, Monterey County California (2014) Seaside Groundwater Basin Watermaster
2014 This report addresses the potential for, and extent of, seawater intrusion in the Seaside Groundwater Basin. YYNNNNNNNNNYYNYN Seaside Basin Amended Decision (2005)
State of California 2005 N
13 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 670, Packet Page 770 C-20
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Fort Ord Dunes State Park General Plan and Environmental Impact Report (2004) State Park and Recreation Commission
2004
This report was prepared to address comprehensive management of the state park’s lands, by defining a framework for resource stewardship, interpretation, facilities, visitor use, and services. Describes current hydrologic conditions in the park.

YYYNYNYYYYNYYYYN
Order on Four Complaints Filed Against the California-American Water Company (1995) State Water Resources Control Board
1995 Initial order on complaints against CalAm relating to Carmel River drafting. YYNNYNNNNYNNYNYN Cease and Desist Order WR 2009-0060 (Carmel River)
State Water Resources Control Board
2009 Cease and Desist Order from the state of California to limit overdraft on the Carmel River by CalAm. NNNNYNNNNNNNYNNN Post-Construction Stormwater Management Requirements for Development Projects in the Central Coast Region - User Guide for Municipal Implementation State Water Resources Control Board
2013 Summary of requirements for implementing stormwater management projects in the Central Coast. YYNNNNYNNYNYNNNN Recycled Water Policy (2013)
State Water Resources Control Board
2013 Summary of the State Board's Recycled Water Policy. NNNNYNYNYNNYYNNN Storm Water Resource Plan Guidelines
State Water Resources Control Board
2015 State Board Guidelines on developing a Stormwater Resource Plan. NNNNNNNNNNYYYYYY Order of Amending in Part Requirements of State Water Baord Order WR 2009-0060.

State Water Resources Control Board
2016 Amended Cease and Desist Order for the Carmel River YNNNYNNNNNNNYNYN Carmel River Watershed Action Plan 2014 Update (2014)
The Carmel River Watershed Conservancy
2014
The Action Plans are based on scientific studies, mission statement objectives and input from our prospective partners and the Public. There are 57 actions in the Action Plan, which are subdivided into eight Action categories: Flows, Groundwater, Habitat, Sedimentation, Steelhead, Education, Public Safety, and Water Quantity.

YYYYNYYNYNNYYYYY
Active Projects in the Carmel River Watershed
The Carmel River Watershed Conservancy
2017 List of current water resources, environmental and/or restoration related projects ongoing in the Carmel River Watershed. YYNNNYNYYYNYYYYY Supplemental Carmel River Watershed Action Plan (2007)
The Planning and Conservation League Foundation and the Carmel River Watershed Conservancy 2007
This report analyzes the opportunities that exist to remove the antiquated dam, reduce downstream groundwater pumping, and implement an integrated watershed restoration and sediment management strategy. It focuses on opportunities to provide benefits to the downstream community and the public through restoration of the Carmel River Watershed.

YYYNNNYNYNNYNNYN
14 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 671, Packet Page 771 C-21
Monterey Peninsula Region Stormwater Resource Plan
Annotated List of Plans and Reports (Grant Task 3.1)27 November 2017 Prepared for Monterey One Water
Prepared by Geosyntec Consultants and Denise Duffy and Associates Title Organization Year Description
Existing Conditions
Watershed reports
Watershed stewardship
Floodplain management
Water Management
Stream Restoration
Stormwater/LID
General Plans
Water Projects/CIP
Lists
Water Quality Study
Other
Water Quality
Water Supply
Flood Control
Environmental
Community
Watershed and Riparian Assessment Report (WRAR): Bureau of Land Management Lands Former Fort Ord, Monterey County, California (2002) The Watershed Institute 2002 Characterizes the dominant physical, ecological, and cultural components of a portion of the former Fort Ord landscape. YYNNNNNNYYNNNYYY 15 Appendix C: List of Data and Plans
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 672, Packet Page 772 C-22

APPENDIX D
Monterey Peninsula Water Recovery
Study Report
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 673, Packet Page 773 Monterey Peninsula Water Recovery
Study Report
Part of the Monterey Peninsula Stormwater
Resource Plan
Prepared for
Monterey Regional Stormwater Management Program (MRSWMP) 5 Harris Court, Building D
Monterey, California 93940
Prepared by
Geosyntec Consultants, Inc.
1111 Broadway, 6th Floor
Oakland, California 94607
Project Number: WW2405
April 16, 2018
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 674, Packet Page 774 Monterey Peninsula Water Recovery Study Report ii April 2018

TABLE OF CONTENTS

1. INTRODUCTION AND BACKGROUND .............................................................................1

1.1 Study Objectives ..............................................................................................................1

1.2 Study Tasks .....................................................................................................................1

1.3 Planning Area ..................................................................................................................2

1.3.1 Watersheds ..........................................................................................................2

1.3.2 Catchments ..........................................................................................................3

1.4 Technical Stakeholder Group ..........................................................................................3

1.5 Water Recovery Study Methodology Overview .............................................................3

2. WATER RECOVERY STUDY PROJECT IDENTIFICATION ............................................5

2.1 Lakes and Reservoirs .......................................................................................................5

2.2 Diversions to Sanitary Sewer ..........................................................................................7

2.3 Infiltration into a Potable Water Supply Aquifer ............................................................9

2.4 Capture and Use ............................................................................................................11

3. CHARACTERIZATION OF PROJECT FEASIBLITY ........................................................14

3.1 Water Supply .................................................................................................................14

3.2 Planning Level Unit Cost ..............................................................................................15

3.3 Ease of Implementation .................................................................................................16

3.3.1 Financing – Planning Level Capital Cost ..........................................................16

3.3.2 Seasonality Constraints - Portion of Water Recovery that is Diverted to Sanitary Sewer as Wet Weather Runoff ............................................................17

3.3.3 Complexity of Permitting and Land Acquisition ..............................................18

3.3.4 Potential Water Quality Constraints ..................................................................19

3.3.5 Water Loss Considerations Associated with Hydrogeology .............................19

3.3.6 Project Coordination and Optimization – Catchment and Sanitary Sewer System Grouping ...............................................................................................20

4. PROJECT SELECTION, DESIGN, AND IMPLEMENTATION PLAN .............................23

4.1 Project Selection ............................................................................................................23

4.1.1 Hartnell Gulch ...................................................................................................23

4.1.2 Lake El Estero ...................................................................................................23

4.1.3 Tunnel and Calle Principal Stormwater Diversion ............................................24

4.1.4 South Carmel and 4th Avenue Dry Weather Diversion .....................................24

4.1.5 Pacific Grove-Monterey ASBS Watershed - David Avenue Reservoir ............24

4.1.6 Del Monte Manor Park Infiltration ...................................................................24

4.1.7 Dry Well Aquifer Recharge Program ................................................................24 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 675, Packet Page 775 Monterey Peninsula Water Recovery Study Report iii April 2018

4.2 Considerations for Future Improvements to Water and Wastewater Infrastructure .....25

4.2.1 Pure Water Monterey Ground Water Replenishment Expansion .....................25

4.2.2 Recycled Water Storage Expansion ..................................................................26

4.2.3 Advanced Treatment at CAWD Wastewater Treatment Plant ..........................26

4.2.4 Micro-Treatment of Lake Water for Groundwater Replenishment ...................26

5. REFERENCES .......................................................................................................................28

LIST OF TABLES
Table 1: Pathway for Water Recovery for Lake and Reservoir Projects .............................. 6 Table 2: Net Recovered Water Volume by Project Category (Number of Projects) .......... 15 Table 3: Planning Level Unit Cost by Project Category (Number of Projects) .................. 16 Table 4: Planning Level Capital Cost by Project Category (Number of Projects) ............. 17 Table 5: Seasonality Constraints1 by Project Category (Number of Projects) .................... 18 Table 6: Complexity of Permitting by Project Category (Number of Projects) ................. 19 Table 7: Potential Water Quality Constraints by Project Category (Number of Projects) . 19 Table 8: Water Loss Considerations Associated with Hydrogeology by Project Category (Number of Projects)............................................................................................. 20 Table 9: Catchment Project Coordination by Project Category (Number of Projects) ....... 20 Table 10: Catchments Associated with Diversions to Sanitary Sewer Projects ................... 21 Table 11: Sewer System Project Coordination by Project Category (Number of Projects) . 22

LIST OF FIGURES
(All figures are provided at the end of this document)
Figure 1: Map of Monterey Peninsula Integrated Regional Water Management Planning Area
Figure 2: Map of Monterey Peninsula Catchments
Figure 3: Water Recovery Study and Stormwater Resource Plan Flowchart Figure 4: Water Recovery Study Identified Project Opportunities Figure 5: Map of Areas Feasible for Infiltration to a Water Supply Aquifer Figure 6: Nomograph Example of Percent Stormwater Capture Figure 7: Pure Water Monterey Flow Schematic - Source Water to Treatment Figure 8: Pure Water Monterey Flow Schematic - Regional Treatment Plant Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 676, Packet Page 776 Monterey Peninsula Water Recovery Study Report iv April 2018

LIST OF APPENDICES
Appendix A: Summary of Catchment Size, Level of Urban Development, and Estimated Runoff
Appendix B: List of Technical Stakeholders
Appendix C: Water Recovery Project Feasibility Matrix
Appendix D: List of Parcel Owners Screened for Potential City Hall Buildings and Schools Appendix E: Suggested Shortlist of Water Recovery Projects Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 677, Packet Page 777 Monterey Peninsula Water Recovery Study Report v April 2018

ACRONYMS AND ABBREVIATIONS
ADWF average dry weather flow
AF acre-foot
AFY acre-feet per year
ASBS Area of Special Biological Significance
ASR Aquifer Storage and Recovery
AWPF Advanced Water Purification Facility
BP Big Sur River – Frontal Pacific Ocean Catchment
CAWD Carmel Area Wastewater District
CalAm California American Water
CEQA California Environmental Quality Act
CM Canyon Del Rey – Frontal Monterey Bay Catchment
CMAC Continuous Monitoring and Adaptive Control
CRFREE Carmel River Floodplain Restoration and Environmental Enhancement CSIP Castroville Seawater Intrusion Project
CU Capture and Use
DSS Diversion to Sanitary Sewer
DWR Department of Water Resources
GIS Geographic Information System
GWR Ground Water Replenishment
HSG Hydrologic Soil Group
INF Infiltration to a Water Supply Aquifer
IRWM Integrated Regional Water Management
IRWMP Integrated Regional Water Management Plan
LR Lake or Reservoir
M1W Monterey One Water
MGD million gallons per day
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 678, Packet Page 778 Monterey Peninsula Water Recovery Study Report vi April 2018 MPWMD Monterey Peninsula Water Management District
MRWPCA Monterey Regional Water Pollution Control Agency NED National Elevation Dataset
NHD National Hydrography Dataset
NOAA National Oceanic and Atmospheric Administration
NRCS National Resource Conservation Service
PBCSD Pebble Beach Community Services District
PWMGWR Pure Water Monterey Groundwater Replenishment
PWWF peak wet weather flow
RTP Regional Treatment Plant
RWQCB Regional Water Quality Control Board
SVRP Salinas Valley Reclamation Project
SWRCB State Water Resources Control Board
SWRP Stormwater Resource Plan
TAC Technical Advisory Committee
TELR Tool to Estimate Load Reduction
USGS U. S. Geological Survey
WBD Watershed Boundary Dataset
WWTP Wastewater Treatment Plant
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 679, Packet Page 779 Monterey Peninsula Water Recovery Study Report 1 April 2018

1. INTRODUCTION AND BACKGROUND
This report documents how the Monterey Peninsula (the Peninsula) Water Recovery Study (the Study) evaluated the feasibility of establishing a Peninsula-wide water recovery and reclamation system. The methodology presented herein focuses on identifying and evaluating potential projects to capture sources of wet and dry weather runoff within the Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management (IRWM) Region (the Planning Area) for water recovery and use. These water recovery projects are meant to reduce the Peninsula’s dependence on the Carmel River, Carmel Valley Alluvial Aquifer, and adjudicated Seaside Groundwater Basin (currently the primary water supply sources in the Planning Area). The study considers how to store, treat, and transport potential sources of runoff prior to entering existing water and wastewater infrastructure for use, but does not identify projects that expand existing water distribution and wastewater storage, treatment, and conveyance system capacities, or determine if this will be needed. The study provides a foundation for more project-specific analyses in the future.

1.1 Study Objectives
The objectives of this Study include:

1. Examine the feasibility of a region-wide water recovery and reclamation system to reduce dependence on existing water supply sources.

2. Consider stormwater and non-stormwater sources (wet and dry weather runoff) and how the sources can be stored, treated, and transported prior to entering existing water and wastewater infrastructure for use.

3. Identify two, at a minimum, projects selected by the Water Recovery Study proponents – City of Monterey, Monterey Peninsula Water Management District, and Monterey One Water – for development of conceptual designs as part of the Study.

1.2 Study Tasks
The tasks conducted as part of this Study include:
• Task A: Develop a memorandum describing the methodology used to examine the feasibility of region-wide water recovery and reclamation system; conduct outreach to technical stakeholders.
• Task B: Use the methodology to identify projects focusing on treatment, transport, and storage; consider system optimization; and document the results in a report. • Task C: Develop concept designs for the preferred project and at least one alternative project.
• Task E: Complete a California Environmental Quality Act (CEQA) checklist for the preferred project and prepare a 30% design.
• Task F: Develop a project implementation plan.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 680, Packet Page 780 Monterey Peninsula Water Recovery Study Report 2 April 2018 This report is the deliverable associated with Task B. Project identification is described in Section 2 and project feasibility evaluation is described in Section 3. Tasks C, E, and F are described in Section 4, but the results of these tasks will be reported separately.

1.3 Planning Area
As described in the Monterey Peninsula, Carmel Bay, and South Monterey Bay IRWM Plan Update (MPWMD and DD&A, 2014), the Planning Area is in the Central Coast Regional Water Quality Control Board (RWQCB Region 3) and lies between the Salinas River groundwater basin and the Big Sur coast. The Planning Area was established based on watershed and groundwater basin limits, portions of the near-shore environment areas affected by inland area activities, and takes into consideration jurisdictional limits, powers, and responsibilities for water resource management. The Planning Area comprises approximately 340 square miles and consists of coastal watershed areas in Carmel Bay and south Monterey Bay between Point Lobos on the south and Sand City on the north – a 38.3-mile stretch of the coast that includes two Areas of Special Biological Significance (Carmel Bay and Pacific Grove). The area encompasses the six Monterey Peninsula cities of Carmel-by-the-Sea, Del Rey Oaks, Pacific Grove, Monterey, Sand City, Seaside, and extends into portions of the unincorporated area of Monterey County at the former Fort Ord, in the Carmel Highlands, Pebble Beach, the inland areas of Carmel Valley and the Laguna Seca area. A map of the Planning Area is provided in Figure 1.

1.3.1 Watersheds
The U.S. Geological Survey (USGS) and California Department of Water Resources (DWR) watersheds that are located within the Planning Area will be used as the basis for the Water Recovery Study. The jurisdictional boundaries within these watersheds will also be used to further delineate planning priorities. The USGS and DWR watersheds in the region, shown in Figure 1, include:
• The Carmel River Basin watershed,
• Most of the Canyon Del Rey/ Frontal Monterey Bay watershed, • A small portion of the Big Sur/ Frontal Pacific Ocean watershed, and • A small portion of the El Toro Creek/ Salinas River watershed.

The Carmel River Basin watershed makes up the most area within the Planning Area (255 square miles) and is the only watershed fully contained within the Planning Area boundary. The Carmel River and the Carmel Valley Alluvial Aquifer (approximately 6.8 square miles within the Carmel River Basin watershed) currently represent the largest source of potable water for the region. The watershed has less urban development than the Canyon Del Rey/ Frontal Monterey Bay watershed.

The Canyon Del Rey/ Frontal Monterey Bay watershed (69 square miles, approximately 53 of which are within the Planning Area) contains the majority of urbanized areas within the Planning Area, as well as the majority of the water demand. The watershed is underlain by the adjudicated Seaside Groundwater Basin and small portions of the Salinas Valley Groundwater Basin, which are hydraulically connected and used for water supply. The extent of these groundwater aquifers is 69 square miles, 25 square miles of which are within the Planning Area. Those 25 square miles Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 681, Packet Page 781 Monterey Peninsula Water Recovery Study Report 3 April 2018 represent 47% of the portion of the Canyon Del Rey/ Frontal Monterey Bay watershed within the Planning Area.

A small portion of the Big Sur/ Frontal Pacific Ocean watershed is within the Planning Area, consisting of approximately 24 square miles of the 167-square mile watershed. The watershed does not have a main water supply source within the Planning Area, though there is some water supply from miscellaneous formations of groundwater within the watershed.

A very small portion of the El Toro Creek/ Salinas River watershed is within the Planning Area, consisting of approximately 6 square miles of the 415-square mile watershed. This area is east of the Canyon Del Rey/ Frontal Monterey Bay watershed and is entirely underlain by the Seaside and Salinas Valley Groundwater Basins (Figure 1).

1.3.2 Catchments
Catchments were delineated using the Tool to Estimate Load Reduction (TELR) and NHDplus1 (National Hydrography Dataset) catchments. The catchments are defined based on the storm drain outfalls to the ocean. Projects within the same catchments may be combined to create a regional water supply recovery and reclamation system. A map of the delineated catchments for this Study is shown on Figure 2. Appendix A provides a table of the Study catchments with tributary area, level of urban development, and rough estimates of average annual runoff (in units of acre-feet per year, AFY). The runoff estimates provide context for what is potentially available for water recovery. In total, it is estimated that catchments that drain through the Planning Area yield approximately 700 to 1,000 AFY of dry weather runoff and approximately 6,100 AFY of urban stormwater runoff.

1.4 Technical Stakeholder Group
The Water Recovery Study Technical Stakeholder Group includes participants in the region that are familiar with stormwater and wastewater distribution systems, treatment, and/or have technical knowledge of the Carmel River and Carmel Valley Alluvial Aquifer or the Seaside Groundwater Basin. The Technical Stakeholder Group attended an interagency Technical Stakeholder Group meeting on October 17, 2017, the intent of which was to get input on the study objectives and methodology. The Technical Stakeholder Group also provided input on project evaluation once the initial analysis was complete. The Technical Stakeholders are listed in Appendix B.

1.5 Water Recovery Study Methodology Overview
The Water Recovery Study methodology includes the following components:

1. Identification of Water Recovery Study projects, and

2. Evaluation of Water Recovery Study project feasibility characteristics.

1 NHDPlus is a geo-spatial, hydrologic framework dataset built by the US EPA Office of Water, assisted by the US Geological Survey. NHDPlus is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD), the National Elevation Dataset (NED), and the Watershed Boundary Dataset (WBD).

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 682, Packet Page 782 Monterey Peninsula Water Recovery Study Report 4 April 2018 In addition to the Water Recovery Study components described herein, additional analyses were conducted to evaluate the Water Recovery Study projects as part of the development of the Monterey Peninsula Stormwater Resource Plan (SWRP). A flow chart that describes the interaction between the Water Recovery Study and the SWRP is provided in Figure 3. As indicated in Figure 3, certain aspects of project identification (i.e., obtaining planned stakeholder projects and performing some of the project opportunity analyses) are shared tasks between the SWRP and Water Recovery Study. All projects screened for inclusion in the Water Recovery Study, whether they are identified as Water Recovery projects or not, are included in the list of SWRP projects.

The characterization of project feasibility of the Water Recovery Study was performed independently of the SWRP’s project classification and evaluation.

The evaluation conducted as part of the SWRP (identified as ‘SWRP Tasks’ in the flow chart) is summarized in the Methodology for Integrated Identification, Prioritization, and Analysis of Monterey Peninsula SWRP Projects Memorandum (Geosyntec, 2017). The identification and evaluation of Water Recovery Study projects (identified as ‘Water Recovery Study Tasks’ or ‘Tasks for Both’ in the flow chart) are described in Sections 2 through 4 of this memorandum.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 683, Packet Page 783 Monterey Peninsula Water Recovery Study Report 5 April 2018

2. WATER RECOVERY STUDY PROJECT IDENTIFICATION
The first step in the Water Recovery Study was to identify potential projects that could recover wet and dry weather runoff for water supply. The four categories of water recovery projects that were considered in the study2 include:
• Storage and diversion, infiltration, or irrigation from lakes and reservoirs, • Diversions to sanitary sewer to supplement recycled water, • Infiltration into a potable water supply aquifer, and • On-site capture and use.

These project types, as well as the method used to identify the project type, are described in Sections 2.1 through 2.4 below.

In addition, planned projects identified by SWRP cooperating entities, interested parties, and stakeholders were screened and classified into the above project types for inclusion in the Water Recovery Study. A description of how planned projects were submitted for the SWRP is provided in the Methodology for Integrated Identification, Prioritization, and Analysis of Monterey Peninsula SWRP Projects Memorandum (Geosyntec, 2017).

In total, 241 Water Recovery Study projects were identified as part of the study. Of the 82 planned projects submitted by stakeholders for the SWRP, 33 were considered Water Recovery projects.

Of these 33 planned Water Recovery Study projects, 19 had overlap with Water Recovery projects identified via a Geographic Information System (GIS) opportunity analysis, while 14 were unique in that they did not overlap with projects identified in the opportunity analysis.

2.1 Lakes and Reservoirs
This Study examined existing lakes and reservoirs that receive runoff from substantial tributary area and have existing storage volume that could be used to detain runoff and recover it via percolation (if located above a water supply aquifer), capture and use, and/or diversion to the sanitary sewer system. The study also considered optimizing the operation of lakes and reservoirs to increase runoff capture and use as a potential mechanism to enhance water recovery.

Typically, stormwater detention facilities are not continuously monitored and rely on a passive hydraulic outlet to release flows (e.g., stagnant orifices, weirs, and/or pumps with level settings).

To improve upon these conventional designs, remote continuous monitoring and adaptive control (CMAC) has been identified as a promising technology for providing better data collection and management of runoff (California SWRCB, 2016). CMAC can use real-time National Oceanic and Atmospheric Administration (NOAA) rainfall forecast information, along with water level and flow rate monitoring data, to automatically draw down a stormwater facility and provide storage for forecasted runoff based on site and system objectives. The results can include significant improvements in performance, such as runoff capture and reuse (WERF, 2014). CMAC can be

2 Micro-treatment and injection into perched aquifers was initially considered as a project category. However, a lack of available information on perched aquifers necessitated the removal of this category from the study.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 684, Packet Page 784 Monterey Peninsula Water Recovery Study Report 6 April 2018 paired with lakes and reservoirs to time diversions to the sanitary sewer to optimize water reuse potential while staying within the available capacity of wastewater conveyance and treatment systems, and additionally, reduce the amount of runoff discharged to Monterey Bay, Carmel Bay, and the Pacific Ocean.

At the outset of this study, Lake El Estero, Laguna Grande (Roberts Lake), David Avenue Reservoir, and Lake Del Monte (Navy Lake) were identified as Lake and Reservoir projects of primary interest. An opportunity analysis was performed to identify other potential lake and reservoir projects within the Planning Area. These opportunities were identified using NHDplus surface water bodies and whether that surface water body has met the following criteria:

1. Has potential to receive a substantial source of stormwater by being located within 10 feet of an NHDplus stream or within 50 feet of an existing storm drain line, and

2. Has potential to recover additional runoff via percolation to a water supply aquifer, capture and use, diversion to sanitary sewer, or optimization.

In-stream obstructions such as rubber dams, which can temporarily inflate to divert runoff or enhance percolation into the subsurface, were not considered as part of this study and are not included in this project category. Surface impoundments that are already a part of the Carmel Area Wastewater District (CAWD) recycled water program in Del Monte Forest were also not considered as part of this opportunity analysis.

There were 13 projects identified in the Lake and Reservoirs (LR) opportunity analysis and one unique project concept submitted by stakeholders that did not overlap with projects identified in the opportunity analysis and was categorized as a Lake and Reservoirs project. The unique project concept is a new detention facility that could be implemented in open space (behind the Safeway on Canyon Del Rey Boulevard in Del Rey Oaks) upstream of Laguna Grande (Roberts Lake). Lake and Reservoir projects are mapped on Figure 4 and listed in the project feasibility matrix provided in Appendix C. The pathway for recovering water (i.e., diversion to sanitary sewer, infiltration into a potable water supply aquifer, or capture and use) for each identified LR project is provided in Table 1.

Table 1: Pathway for Water Recovery for Lake and Reservoir Projects LR Project ID Lake/Reservoir Name Pathway for Water Recovery LR_01 County and Private Pond Diversion to sanitary sewer LR_02 David Avenue Reservoir Diversion to sanitary sewer LR_03 Lake Del Monte Diversion to sanitary sewer, capture and use LR_04 Lake El Estero Diversion to sanitary sewer, capture and use LR_05 Glen of Pacific Grove Diversion to sanitary sewer, capture and use LR_06 Laguna Seca Infiltrate to a potable water supply aquifer LR_07 Laguna Seca Golf Ranch Capture and use
LR_08 Monterey Peninsula Regional Diversion to sanitary sewer, capture and use LR_10 Nicklaus Club – Monterey Capture and use
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 685, Packet Page 785 Monterey Peninsula Water Recovery Study Report 7 April 2018 LR Project ID Lake/Reservoir Name Pathway for Water Recovery LR_11 Pacific Grove Golf Links Diversion to sanitary sewer, capture and use LR_12 Roberts Lakes / Laguna Grande Diversion to sanitary sewer, capture and use LR_13 Santa Lucia Conservancy Capture and use, other1
LR_14 Los Padres Reservoir Other1
LR_planned_79 New Detention behind Safeway Diversion to sanitary sewer 1Another pathway considered was to detain runoff in reservoirs tributary to the Carmel River and release the water at opportune times such that the timing of allowable diversion via the California American Water (CalAm) supply wells could be extended.

2.2 Diversions to Sanitary Sewer
Storm drains that receive runoff from substantial tributary area and can be conveyed to sanitary sewer pump stations can be retrofitted to divert dry weather runoff to the sanitary sewer system for treatment and ultimate reuse. Increased or new detention storage was considered as part of these projects if the first flush of stormwater runoff could be diverted as well. Pretreatment was considered as part of this project category.

Within the Monterey One Water (M1W) (formerly Monterey Regional Water Pollution Control Agency [MRWPCA]) service area, which is primarily within the Canyon Del Rey/Frontal Monterey Bay watershed as well as portions of the northern Salinas Valley, runoff can be diverted to the Regional Treatment Plant (RTP) via gravity sewer and then through one of the M1W Interceptor Pipelines (pressurized force mains and/or gravity main). At the RTP, wastewater undergoes primary and secondary treatment and then can be reclaimed by either: (1) undergoing tertiary treatment and used as recycled ‘purple pipe’ water for irrigation, via the Salinas Valley Reclamation Project (SVRP) recycled water plant and the Castroville Seawater Intrusion (CSIP) distribution system; or (2) starting in 2019, undergoing advanced treatment, transport, and injection into the Seaside Groundwater Basin, via the Advanced Water Purification Facility (AWPF) of the Pure Water Monterey Groundwater Replenishment (PWMGWR) Project currently under construction. An average of 60 percent of M1W wastewater is recycled each year and that percentage will increase when the PWMGWR Project is operational. M1W currently serves a population of approximately 250,000 people (M1W, 2017) and treats 17.2 million gallons per day (MGD) average dry weather flow (ADWF) for the 2014-2016 period (A. Imamura, personal communication, March 20, 2018), with a peak wet weather flow (PWWF) of 36.8 MGD (M1W, 2016). The RTP is permitted for design flows of 29.6 MGD ADWF and 75.6 MGD PWWF, indicating available capacity for future runoff diversions. Pump station capacity for accepting diversions from lakes and reservoirs as well as additional storm drain diversions was considered as part of this study.

Within the CAWD service area, which is primarily within the Carmel River Watershed, runoff can be diverted to the Wastewater Treatment Plant (WWTP) via gravity sewer and force main. Treated wastewater is reclaimed by sending recycled ‘purple pipe’ water to Del Monte Forest where it is used to irrigate seven golf courses (Pebble Beach Golf Links, Spyglass Hill, The Links at Spanish Bay, Peter Hay, Cypress Point, Monterey Peninsula Country Club, and Poppy Hills). CAWD’s service area is approximately 5.5 square miles and serves 11,000 people within the district and treatment and disposal for an additional 4,500 people in Del Monte Forest from the Pebble Beach Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 686, Packet Page 786 Monterey Peninsula Water Recovery Study Report 8 April 2018 Community Services District (PBCSD) (CAWD, 2017). Current ADWF is approximately 1.8 MGD, 1.2 MGD of which is from CAWD and 0.6 MGD from the Pebble Beach Community Services District. The CAWD WWTP has been designed to treat 4.0 MGD of primarily domestic wastewater and the plant has a permitted capacity of 3.0 MGD, indicating available capacity for future runoff diversions.

One dry weather storm drain diversion project currently in operation is the Pacific Grove Area of Special Biological Significance (ASBS) Dry Weather Diversion System. It has been implemented in three phases between 2001 and June 2014 and currently covers the section of coastline from Lovers Point east to the Hopkins Marine Station (Pacific Grove and Monterey, 2016). This project currently diverts dry weather urban runoff from a 652-acre catchment area to the M1W Interceptor Pipeline that is processed at the RTP (Pacific Grove and Monterey, 2016). Upgrades and expansions of the existing dry weather diversion system are proposed to increase the capacity of the collection system to be able to divert up to the 85th percentile wet weather storm from a portion of the City of Pacific Grove to the M1W Interceptor Pipeline. These proposed upgrades include:
stormwater diversions for the Lovers Point and Sea Palm catchments, by diverting runoff into underground storage tanks and metering it to the M1W Interceptor Pipeline; and Greenwood, Eardley, David Avenue, and Pine Street diversions, which would expand facilities already constructed to divert dry weather flows and/or evaluate additional opportunities to utilize new infrastructure such as the David Avenue Reservoir (Pacific Grove and Monterey, 2016). Another dry weather storm drain diversion that is currently being considered is for Lake El Estero.

Preliminary analysis has been conducted to divert water from Lake El Estero to the sanitary sewer system (MRWPCA, 2016). Both David Avenue Reservoir and Lake El Estero have been identified in this study as Lake and Reservoir (LR) projects, as stated in Section 2.1.

At the outset of this Study, identified projects in the Diversions to Sanitary Sewer category included: the New Monterey Urban Diversion to the M1W Reeside pump station in the City of Monterey; Del Monte Boulevard and Bay Avenue Outfall Diversion to the M1W Seaside pump station in the City of Seaside; and the Carmel Bay ASBS Project, as identified in the Integrated Regional Water Management Plan (IRWMP) (MPWMD, 2014), which would divert dry-weather runoff to the CAWD sanitary sewer system. An opportunity analysis was performed to identify other potential storm drain diversions to sanitary sewer in the Planning Area. The most readily available opportunities were identified based on storm drain outfalls along the coast that could divert runoff to a sanitary sewer pump station. It was assumed that coastal outfalls could divert runoff upstream or downstream to the nearest sanitary sewer pump station along the pressurized sewer main, which extends parallel to the coast from Pacific Grove through Monterey and Sand City. Along the gravity sewer main, which extends for approximately one mile along the coast in Monterey, coastal outfalls were directed to the nearest downstream sanitary sewer pump station.

The coastal sanitary sewer pump stations that were considered include those operated by M1W, jurisdictions which connect to the M1W Interceptor Pipeline (e.g., Seaside County Sanitation District, City of Monterey, Naval Postgraduate School, and Presidio of Monterey), and CAWD. A concept design that could be considered in future analyses includes subsurface storage of storm water runoff under beach parking lots. This type of project is currently underway and in the construction phase in Santa Monica, California.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 687, Packet Page 787 Monterey Peninsula Water Recovery Study Report 9 April 2018 There were eleven projects identified in the Diversions to Sanitary Sewer (DSS) opportunity analysis and one unique planned project submitted by stakeholders that did not overlap with projects identified in the opportunity analysis and was categorized as a DSS opportunity. The unique stakeholder project is the Hartnell Gulch creek restoration and stormwater diversion project in the City of Monterey. Flows from Hartnell Gulch may be diverted to Lake El Estero and/or temporarily stored underground in the adjacent public library parking lot for additional recovery.

DSS opportunities are mapped on Figure 4 and listed in the project feasibility matrix provided in Appendix C.

2.3 Infiltration into a Potable Water Supply Aquifer
Passive recharge into a potable water supply aquifer provides another option for water supply augmentation. Passive recharge into a potable water supply aquifer entails locating an infiltrating stormwater capture facility, such as a subsurface infiltration gallery over a groundwater basin used for water supply or a dry well that is situated above a potable water supply aquifer. Potential passive recharge projects were identified over the Seaside Groundwater Basin, including the Paso Robles and Santa Margarita Aquifers, and the Carmel Valley Alluvial Aquifer.

Overbank flood waters were considered a source of water recovery if stored on the floodplain and allowed to percolate into a water supply aquifer. Candidates for infiltration projects included riparian areas where floodplain connectivity could safely increase without causing flood impacts to infrastructure. The only such planned project is the proposed Carmel River Floodplain Restoration and Environmental Enhancement (CRFREE) Project, co-sponsored by the Monterey County Resource Management Agency and the Big Sur Land Trust, located just east of Highway 1 immediately south of the Carmel River Bridge. The southern floodplain proposed for restoration is above the Carmel River Groundwater Basin, although potential water supply yield from this portion of the aquifer is not appreciable since no potable water supply wells are within or downstream from the project area. Irrigation wells at the CRFREE Project site and west of Highway 1 will benefit from groundwater recharge from storm flow inundation onto the floodplain, which is planned to occur for 5-year storm events and larger. Recharge to the aquifer from the CRFREE Project will primarily result in environmental benefits associated with increased base flows to the Carmel Lagoon, which has extensive habitat supporting the local steelhead salmon population. No other riparian floodplains with permeable soils that are located above aquifers used for water supply were identified.

A geospatial opportunity analysis was conducted to identify potential passive recharge projects.

This analysis involved overlaying geographic information regarding physical constraints that could preclude infiltration into a water supply aquifer. Physical constraints that were identified and mapped as part of this effort to delineate feasible infiltration areas (see Figure 5) included:
• Underlying soil type - National Resource Conservation Service (NRCS) Hydrologic Soil Group (HSG) ‘A’ and ‘B’ type soils are considered conducive for infiltration. • Depth to groundwater – sufficient separation (greater than 10 feet) from the base of the facility to underlying groundwater is recommended to protect groundwater quality.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 688, Packet Page 788 Monterey Peninsula Water Recovery Study Report 10 April 2018 • Geotechnical hazards – infiltration is not considered feasible if landslides are present or if there is high or very high liquefaction potential. • Contamination – adjacent or underlying soil or groundwater contamination creates an infeasible condition for groundwater recharge due to the potential for migration of pollution.
• Set-backs – infiltration must be located a sufficient distance (greater than 100 feet) away from water supply wells and septic fields, for groundwater quality purposes.

Set-backs from structures and utilities may also be needed to prevent infiltration from impacting structural stability.
• Groundwater basins – Infiltration into a water supply aquifer can only occur if the project overlies one of the identified water supply aquifers in the Seaside Groundwater Basin or Carmel Valley Groundwater Basin.

Locations identified as physically practical for infiltration into a water supply aquifer were further screened to identify locations with sufficient tributary drainage and undeveloped or open space area to implement regional projects, and/or locations that could be considered for smaller distributed infiltration projects. These locations were considered opportunities for implementation of passive regional or distributed stormwater and dry weather runoff recharge projects.

The following data sources were used to identify locations that could be feasible for infiltration opportunities on a parcel basis:
• All opportunities identified in the capture and use opportunity analysis (see Section

2.4);
• Parcels with the following County of Monterey land use codes for vacant land:

Land Use
Code Description
Land Use
Code Description
1A Vacant S.F.D. 1 Site 3C Undeveloped 41 to 300 Acres
1B Vacant S.F.D. 2 or more Sites 3D Undeveloped 301 or more acres 1M Vacant Transitional 5A Vacant Commercial
2A Vacant Zoned for Multi Family 5Z Vacant Transitional 2M Vacant Transitional 6A Vacant Industrial
3A Res. Use, Vacant up to 10 ac. 6M Vacant Transitional 3B Res. Use, Vacant, 11 to 40 ac.

The following criteria were used to identify potential infiltration project opportunities:
• Majority of parcel overlying areas feasible for infiltration to a water supply aquifer, • Parcel size greater than or equal to 0.1 acres,
• Parcel located within 500 feet of a storm drain line, • Land use/land cover that is either vacant, open space, irrigated, or flat impervious cover (e.g. parking lot, tennis court) using aerial imagery in GIS. Buildings, beach, and wooded areas were considered not feasible for infiltration.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 689, Packet Page 789 Monterey Peninsula Water Recovery Study Report 11 April 2018 In addition to the parcel-based analysis, two other infiltration project types were considered: (1) a dry well program that could be implemented in residential areas in Seaside and/or Carmel Valley, and (2) projects where runoff could be diverted from tributaries to the Carmel River via the storm drain network. The dry well program would divert flows from storm drain network in residential neighborhoods to a water quality pretreatment system that will discharge to a dry well above domestic supply aquifers. Projects that would detain and infiltrate diverted runoff from tributaries to the Carmel River would be constructed to delay the timing of infiltration into the Carmel Valley Alluvial Aquifer and could retain water for up to one month or longer.

If both infiltration and capture and use water recovery pathways were identified as opportunities on the same parcel, the priority was given to infiltration, except for golf courses and cemeteries, which were prioritized as capture and use projects.

There were 140 projects identified in the Infiltration into a Water Supply Aquifer (INF) category, including two programmatic dry well programs (Seaside and Carmel Valley), six potential opportunities to divert runoff from tributaries to the Carmel River, and three unique planned projects submitted by stakeholders that did not overlap with projects identified in the opportunity analysis and were categorized as an infiltration opportunity. These projects are mapped on Figure 4 and listed in the project feasibility matrix provided in Appendix C.

2.4 Capture and Use
Harvesting of wet and dry weather runoff as a water source is possible throughout the Planning Area where a demand is present. Water storage facilities, including cisterns and above- or belowground tanks that capture and harvest stormwater from rooftops and other impervious surfaces and then store the water for water supply use, are utilized for these water recovery projects. Irrigation demand for vegetated landscapes was the targeted candidate for capture and use projects.

Cistern water tanks are typically used for smaller distributed facilities, whereas larger above- or below-ground storage tanks are typically used for regional facilities (i.e., capturing runoff from a larger tributary area). Currently, the Monterey Peninsula Water Management District (MPWMD) and CalAm offer rebates for distributed cistern water tanks through the Monterey Water Conservation program (MPWMD, 2017). The rebates offered to residential, commercial, and industrial property owners is $50 per 100 gallons of water storage capacity (up to 500 gallons) in a cistern, then $25 per 100 gallons of water storage capacity up to a maximum storage capacity of 25,000 gallons per qualifying property.

To identify locations where regional capture and use storage facilities could be implemented, a geospatial analysis was conducted to identify potential locations for use of captured water in urban areas. This entailed an identification of public and private irrigated lands, by screening for recreation, park, institutional (i.e., municipal buildings and schools), and open space land uses.

The locations were examined in further detail to identify those currently irrigated by potable water.

Large irrigated areas that would require considerable water demand were further examined to identify whether the location could be configured to capture sufficient upstream flows (e.g., via storm drain diversion) to support irrigation demand on-site, and whether there is area to house a large capture and use facility.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 690, Packet Page 790 Monterey Peninsula Water Recovery Study Report 12 April 2018 The following data sources were used to identify areas feasible for capture and use project opportunities:
• Recommended projects based on Table ES1 from the City of Pacific Grove Local Water Project Facility Plan Report (WRFP No. 3316-010), dated January 2014; • Irrigated green space in the urban areas at the 1:30,000 scale using the World Topographic Map3 in GIS;
• Parcels with the following County of Monterey land use codes:

Land Use Code Description Land Use Code Description
3H Wholesale Nurseries,
Mushroom Houses
4K Agriculture Preserves,
Irrigated, Row Crop
4C Row Crop 4N Ag. Preserve Vineyard,
orchard
4D Field Crops, Alfalfa, Pasture 5W Recreational, golf courses, resorts, tennis courts
4F Vineyards 7E Schools, Colleges, Day
Schools, Land and/or Impr.
4G Orchards (fruits or nuts) 7G Cemeteries, Etc.
• Public parcel owners associated with County of Monterey land use codes 7A and 7B that have been screened for potential municipal buildings and schools (table provided in Appendix D); and
• Properties within urban areas in the California Protected Areas Database4.

The following criteria were used to identify potential locations that would be feasible for capture and use:
• Parcel area greater than or equal to 0.1 acres,
• Parcel located within 500 feet of a storm drain line for potential storm drain diversion, and

3 This map is designed to be used as a basemap by GIS professionals and as a reference map by anyone. The map includes administrative boundaries, cities, water features, physiographic features, parks, landmarks, highways, roads, railways, and airports overlaid on land cover and shaded relief imagery for added context. Coverage is provided down to ~1:4k. This basemap was compiled from a variety of best available sources from several data providers, including the U.S. Geological Survey (USGS), U.S. Environmental Protection Agency (EPA), U.S. National Park Service (NPS), Food and Agriculture Organization of the United Nations (FAO), Department of Natural Resources Canada (NRCAN), GeoBase, Agriculture and Agri-Food Canada, DeLorme, HERE, Esri, OpenStreetMap contributors, and the GIS User Community. For more information on this map, including the terms of use, visit http://goto.arcgisonline.com/maps/World_Topo_Map. 4 The California Protected Areas Database (CPAD) contains data on lands owned in fee by governments, non-profits and some private entities that are protected for open space purposes. Data includes all such areas in California, from small urban parks to large national parks and forests, mostly aligned to assessor parcel boundaries. California Protected Areas Database (CPAD - www.calands.org). August 2017.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 691, Packet Page 791 Monterey Peninsula Water Recovery Study Report 13 April 2018 • Potential for irrigated land uses (e.g., ball/recreational fields, parks, golf courses) using aerial imagery in GIS.

There were 75 projects identified in the Capture and Use (CU) category including nine unique planned projects submitted by stakeholders that did not overlap with projects identified in the opportunity analysis and were categorized as a CU opportunity. These are mapped on Figure 4 and listed in the project feasibility matrix provided in Appendix C.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 692, Packet Page 792 Monterey Peninsula Water Recovery Study Report 14 April 2018

3. CHARACTERIZATION OF PROJECT FEASIBLITY
The identified Water Recovery Study projects were compiled into a Water Recovery Study project database. Each identified project was characterized for project implementation feasibility. This semi-quantitative characterization considered the study objectives and the interests of the stakeholders. This characterization was used to assist with selecting projects for which conceptual designs will be developed.

The three project feasibility characteristics that were evaluated include:

1. Water supply – the estimated annual volume of water that could be recovered for water supply.

2. Planning level cost – the planning level estimate of the unit project cost.

3. Ease of Implementation – considerations for project financing, environmental constraints, complexity of permitting and land acquisition, seasonality of water recovery source, rights to source water, water quality implications, water loss considerations due to hydrogeology, and project coordination and optimization.

Capacity considerations at the RTP and within the sanitary sewer pipeline system were identified when evaluating projects using documented pump station capacities (MRWPCA, 2016) and available pipe diameters, but quantitative evaluation of treatment capacity was not a part of the scope of this study. When considering projects for implementation at the design level, treatment capacity will need to be quantified in detail. Future wastewater generated because of new land development in the service area should also be considered at the design level to estimate the excess capacity available at build-out conditions.

3.1 Water Supply
The estimated amount of annual runoff that could potentially be recovered at the project site to augment water supply is provided as a range. Ranges include 0 - 5 AFY; 5 - 10 AFY; 10 - 20 AFY; 20 - 100 AFY; and 100+ AFY. Estimated net recovery volume was calculated assuming there are no other Water Recovery Study projects implemented in the area tributary to the project. Both wet and dry weather runoff were considered.

Wet weather runoff supply was calculated for all projects opportunities. Wet weather runoff supply was calculated as a function of catchment hydrology, facility configuration, and drawdown rate using the following steps:
a) Calculate the runoff depth (acre-feet per acre per year) as a function of live storage volume, normalized by tributary area (inches); drawdown time (days); and runoff coefficient (unitless). This was displayed in a nomograph, constructed using continuous hydrologic simulation (see nomograph example in Figure 6). Nomographs were developed for catchments with impervious percent of 25%, 50%, 75%, and 100%; catchment soils comprised of HSG A and HSG B/C/D; and drawdown times of 12 hours, 1 day, 2 days, 3 days, 1 week, 1 month, 6 months, and 1 year.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 693, Packet Page 793 Monterey Peninsula Water Recovery Study Report 15 April 2018 b) Calculate drawdown time (days) by dividing the live storage volume available (i.e., storage volume above a permanent pool) by the sum of the facility’s discharge rates (i.e., percolation, capture and use, and diversion).
c) Calculate the stormwater runoff depth (acre-feet per acre per year) and percent capture using the nomographs for the four points surrounding the project’s imperviousness and drawdown time and apply four-point linear interpolation. d) Multiply the annual stormwater runoff depth (acre-feet/acre) by the tributary area (acres) to calculate annual wet weather runoff (AFY).
e) Apply an optimization factor based on available technical literature if use of CMAC is anticipated (i.e., for Lakes and Reservoirs).

Dry weather runoff was estimated for a subset of projects by extrapolating dry weather yield results from previously implemented and evaluated projects, including the Pacific Grove ASBS project and checked with ranges from other studies in southern California (IRWD, 2004 and County of Orange, 2017).

Estimates of net recovered water volume are provided for each project in the project feasibility matrix in Appendix C. The number of projects in each project category that fall within each range of net recovered water volume is summarized in Table 2 below.

Table 2: Net Recovered Water Volume by Project Category (Number of Projects) Net Recovered
Water Volume
(AFY)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture and
Use
Total
Number of
Projects
0-5 0 4 48 52 104
5-10 1 0 42 9 55
10-20 4 2 39 6 48
20-100 5 4 11 8 28
100+ 4 2 0 0 6
Total Number of
Projects 14 12 140 75 241

3.2 Planning Level Unit Cost
The planning level estimate of unit project cost (dollars per acre-foot [$/AF] of runoff volume recovered per year) for an assumed design life of 30 years is provided as a range. Ranges include <$800/AF (lower range for traditional water supply); $800 - $2,000/AF (upper range for traditional water supply); $2,000 - $5,000/AF (range for desalination); $5,000 - $10,000/AF; and $10,000+/AF. Planning level cost estimates include capital and operational costs for pretreatment, Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 694, Packet Page 794 Monterey Peninsula Water Recovery Study Report 16 April 2018 storage, pumps, electrical power, purchase/lease of private property, and sewer connection fees, where applicable.

Planning level unit costs were calculated for every project opportunity. The cost estimates performed were a Class 5 (AACE, 1997) estimate prepared at a level consistent with rough concept screening. The estimates used available cost information from previously implemented and evaluated projects in the Planning Area.

Estimates of planning level unit cost are provided in the project feasibility matrix in Appendix C.

The breakdown of results is summarized in Table 3 below.

Table 3: Planning Level Unit Cost by Project Category (Number of Projects) Unit Project
Cost ($/AF)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture and
Use
Total
Number of
Projects
<$800 9 0 0 0 9
$800 - $2,000 3 2 25 1 31
$2,000 - $5,000 1 10 53 4 68
$5,000 - $10,000 0 0 26 0 26
$10,000+ 1 0 36 70 107
Total Number of
Projects 14 12 140 75 241

3.3 Ease of Implementation
Ease of implementation was evaluated semi-quantitatively based on considerations for project financing, seasonality constraints, complexity due to permitting and land acquisition, potential water quality constraints, water loss considerations associated with hydrogeology, and project coordination.

3.3.1 Financing – Planning Level Capital Cost
Larger projects tend to be more difficult to finance. Thus, the planning level capital cost of each project was categorized based on an order of magnitude estimate. Categories of planning level cost include <$100k; $100k - $1M; $1M - $10M; and $10M+. The same data used to estimate planning level unit cost was used here.

Estimated ranges of planning level capital cost are provided in the project feasibility matrix in Appendix C. The breakdown of results is summarized in Table 4 below.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 695, Packet Page 795 Monterey Peninsula Water Recovery Study Report 17 April 2018 Table 4: Planning Level Capital Cost by Project Category (Number of Projects) Capital Project
Cost ($)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture and
Use
Total
Number of
Projects
<$100k 4 3 8 7 22
$100k - $1M 8 3 92 15 118
$1M - $10M 1 6 37 42 86
$10M+ 1 0 3 11 15
Total Number of
Projects 14 12 140 75 241

3.3.2 Seasonality Constraints - Portion of Water Recovery that is Diverted to Sanitary Sewer as Wet Weather Runoff
Discussions with M1W and CAWD staff indicated that diverted runoff to the sanitary sewer system is most valuable in the dry season, when water demand is highest, and the recycled purple pipe system is being utilized by agriculture and golf course customers. Starting in the winter of 2019-2020, M1W will have the capability to treat additional water at the RTP, including stormwater that is added to the wastewater collection system. Once treated through the primary and secondary systems, the secondary effluent is currently recycled to advanced tertiary level for crop irrigation. After completion of the Pure Water Monterey Project in late 2019, the water will also be able to be recycled through the advanced water purification facility currently under construction for groundwater recharge/replenishment injection into the Seaside Groundwater Basin. Producing purified recycled water is more expensive than treating the water to a tertiary level for crop irrigation, and the capacity for advanced treatment and groundwater replenishment is limited to 5 MGD of treatment capacity/injection as currently designed. In addition, there is not expected to be any demand or need for new influent water for recycling at the RTP between the months of approximately November and March when excess municipal wastewater is available and irrigation demands are typically low. For that reason, a higher cost for treatment of that water will likely apply, unless waters can be seasonally stored and thus beneficially used for recycling during approximately April through October.

CAWD does not have capability for advanced treatment at its WWTP nor does it have a means to transport treated wastewater for groundwater replenishment. Thus, diversion of stormwater runoff to CAWD’s system during the wet season will not be considered for this study. Each project was assessed for how much of the water recovered would be diverted to the sanitary sewer as wet weather runoff. Categories include most (more than half), some (less than half), or none.

The estimated portion of water recovered that is diverted to the sanitary sewer as wet weather runoff is provided in the project feasibility matrix, Appendix C. The breakdown of results is summarized in Table 5 below.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 696, Packet Page 796 Monterey Peninsula Water Recovery Study Report 18 April 2018 Table 5: Seasonality Constraints1 by Project Category (Number of Projects) Portion of
Recovered Water
Diverted to Sanitary
Sewer as Wet Weather
Runoff
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
No recovered water
diverted as wet weather
runoff
5 10 140 75 230
Some recovered water
diverted as wet weather
runoff
2 2 0 0 4
Most recovered water
diverted as wet weather
runoff
7 0 0 0 7
Total Number of Projects 14 12 140 75 241
1 Each project was assessed for how much of the water recovered would be diverted to the sanitary sewer as wet weather runoff.

Categories include most (more than half), some (less than half), or none.

3.3.3 Complexity of Permitting and Land Acquisition
Complexity of project implementation due to potential permitting and land acquisition was characterized for each project as lower, medium, or higher. Higher permitting complexity was assigned to those identified projects that: are in streams; are in the coastal zone (California Coastal Commission's Coastal Zone Boundary for the State of California); include infiltration to a water supply aquifer via a dry well; and/or a Lakes and Reservoir project. Medium permitting complexity was assigned to those identified projects that are: located on school or public park parcels; located on private parcels requiring purchase or lease agreements (excluding golf courses); and/or projects with potential water rights issues, identified as those which overlie the Seaside Adjudicated Groundwater Basin or the Carmel Valley Alluvial Aquifer. Lower permitting and land acquisition complexity was assigned to all projects not categorized as medium or higher.

The relative complexity of permitting and land acquisition is provided in the project feasibility matrix in Appendix C. The breakdown of results is summarized in Table 6 below.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 697, Packet Page 797 Monterey Peninsula Water Recovery Study Report 19 April 2018 Table 6: Complexity of Permitting by Project Category (Number of Projects) Complexity of
Permitting (Lower,
Medium, Higher)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
Lower 0 0 1 11 12
Medium 0 0 133 46 179
Higher 14 12 6 18 50
Total Number of
Projects 14 12 140 75 241

3.3.4 Potential Water Quality Constraints
Water quality implications/constraints were considered for each project based on what is known about the water source proposed. Specifically, the ability to treat stormwater and dry weather runoff at the RTP (via diversion to the wastewater collection system) may be limited by the salinity of the water. If lakes or reservoirs are being used to temporarily store stormwater, the quality of the water diverted into the wastewater collection system will need to be monitored to insure salinity (and potentially other constituent concentrations) is not too high. Diversion to sanitary sewers assumes that periodic water quality monitoring and operations and maintenance costs will be part of the constraints. Additionally, high suspended solids in stream runoff could be a constraint for reuse. Projects that have potential water quality constraints associated with salinity (i.e., low lying lakes along the coast) or suspended solids (i.e., recovered water from streams) were differentiated from ones that do not. This field may not identify all potential water quality constraints but is an approximation for planning purposes.

Projects with potential water quality constraints are identified in the project feasibility matrix in Appendix C. The breakdown of results is summarized in Table 7 below.

Table 7: Potential Water Quality Constraints by Project Category (Number of Projects) Potential Water
Quality Constraints
(No, Yes)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
No 11 11 133 75 230
Yes 3 1 7 0 11
Total Number of
Projects 14 12 140 75 241

3.3.5 Water Loss Considerations Associated with Hydrogeology An important consideration related to infiltrating into a water supply aquifer is that not all runoff that is infiltrated, even if directly above a groundwater basin, can be considered completely recovered by an aquifer. This is due to evapotranspiration losses in the vadose zone and geologic Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 698, Packet Page 798 Monterey Peninsula Water Recovery Study Report 20 April 2018 hydraulic constrictions. These hydrogeologic considerations affect the timeframe of recharge and the volume of water recovery in a non-trivial way. Runoff that is recovered via diversion to the sanitary sewer and capture and use is anticipated to be a more direct source of water supply than infiltrating into an aquifer.

Project opportunities that infiltrate into water supply aquifers, all of which have water loss considerations associated with hydrogeology, are identified in the project feasibility matrix in Appendix C. The breakdown of results is summarized in Table 8 below.

Table 8: Water Loss Considerations Associated with Hydrogeology by Project Category (Number of Projects)
Water Loss
Considerations
(No, Yes)
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
No 13 12 0 75 100
Yes 1 0 140 0 141
Total Number of
Projects 14 12 140 75 241

3.3.6 Project Coordination and Optimization – Catchment and Sanitary Sewer System Grouping
Consideration of how the identified projects could be combined to create a regional water supply recovery and reclamation system was included as part of project implementation feasibility characterization. It was determined that projects within the same catchment (see Figure 2 and Figure 2A for a map of the catchments in the Monterey Peninsula region) could be combined to create a regional water supply recovery and reclamation system. Additionally, projects that divert runoff to the same wastewater treatment plant (i.e., M1W or CAWD) could also be combined to improve coordination and optimization.

The number of identified project opportunities in the same catchment and the destination of diversions to the sanitary sewer are provided in the project feasibility matrix in Appendix C. The breakdown of results is summarized in Table 9, Table 10, and Table 11 below.

Table 9: Catchment Project Coordination by Project Category (Number of Projects) Catchment
Name
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
BP1-2 0 0 1 0 1
Carmel River 2 0 28 6 36
CM2-02 0 0 1 0 1
CM-03 0 0 0 1 1
CM-04 0 0 6 0 6
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 699, Packet Page 799 Monterey Peninsula Water Recovery Study Report 21 April 2018 Catchment
Name
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
CM-05 0 0 9 2 11
CM-06 0 0 67 2 69
CM-07 7 0 26 8 41
CM-09 1 0 0 8 9
CM-10 1 0 0 6 7
CM-11 0 1 0 10 11
CM-13 0 0 0 3 3
CM-14 0 0 0 1 1
CM-15 0 0 0 7 7
CM-20 0 0 0 1 1
CM-21 1 0 0 5 6
CM-22 0 0 0 1 1
CM-23 0 0 0 1 1
CM-24 0 0 0 1 1
CM-29 1 0 0 1 2
CM-33 0 0 0 2 2
CM-35 1 0 0 3 4
CM-37 0 0 0 1 1
CM-41 0 0 0 2 2
CM-42 0 0 0 1 1
N/A 0 113 24 24 15
Total Number of
Projects 14 12 140 75 241
1Big Sur River – Frontal Pacific Ocean Catchment (BP).
2Canyon Del Rey – Frontal Monterey Bay Catchment (CM).
3Diversion to sanitary sewer opportunity and includes diversion from more than one catchment. See Table 10 for more details. 4Programmatic project and includes diversion from more than one catchment.

Table 10: Catchments Associated with Diversions to Sanitary Sewer Projects DSS Project ID Catchment Names DSS Project ID Catchment Names DSS_01 CM1-31, CM-32, CM-33 DSS_07 CM-01 through CM-04
DSS_02 CM-29, CM-30 DSS_08 CM-41, CM-42, Carmel River
DSS_03 CM-14, CM-15 DSS_09 CM-42
DSS_04 CM-08 through CM-11, CM-13 DSS_10 Carmel River
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 700, Packet Page 800 Monterey Peninsula Water Recovery Study Report 22 April 2018 DSS Project ID Catchment Names DSS Project ID Catchment Names DSS_05 CM-07 DSS_planned_51 CM-11
DSS_06 CM-05, CM-06, CM-07 DSS_planned_60 CM-15 through CM-28 1Canyon Del Rey – Frontal Monterey Bay Catchment (CM).

Table 11: Sewer System Project Coordination by Project Category (Number of Projects) Sanitary Sewer
System Destination
Lakes /
Reservoirs
Diversion to
Sanitary Sewer
Infiltration to a
Water Supply
Aquifer
Capture
and Use
Total
Number of
Projects
CAWD 0 3 0 0 3
M1W 9 9 0 0 18
Not applicable 5 0 140 75 220
Total Number of
Projects 14 12 140 75 241
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 701, Packet Page 801 Monterey Peninsula Water Recovery Study Report 23 April 2018

4. PROJECT SELECTION, DESIGN, AND IMPLEMENTATION PLAN
All Water Recovery Study projects were incorporated into the list of projects in the Monterey Peninsula SWRP and were analyzed as part of the SWRP in addition to the analysis conducted for this study. This entailed classification and a metrics-based evaluation, as shown on Figure 3. The details of SWRP project evaluation is described in the Methodology for Integrated Identification, Prioritization, and Analysis of Monterey Peninsula SWRP Projects Memorandum (Geosyntec, 2017).

Utilizing the feasibility characterization described in Section 3, a shortlist of 26 projects which have the highest estimated net recovered water volume (>20 AFY) and lowest unit project cost (<$5,000/AF) was developed (see Appendix E). Projects with the highest net recovered water volume and the lowest unit project cost may be perceived as having the greatest environmental and financial value. Regional LR and DSS projects comprise about half of the list, despite there being far fewer number of projects in these categories than CU and INF. This indicates that these project types may be the most cost effective and appear to be the most promising project types for water recovery based on the characterization of project feasibility.

4.1 Project Selection
By considering the metrics-based evaluation, input from the Monterey Peninsula stakeholders, and other local and institutional knowledge, the Monterey Peninsula SWRP Technical Advisory Committee (TAC) selected seven projects for concept design. Based on stakeholder feedback, the primary factor in project selection was to capture as much usable water as possible to help meet dry weather recycled water demands and augment water supply. Thus, all seven project projects for concept design were also identified in the Water Recovery Study.

The seven selected projects for concept design are described below. The top project selected, Hartnell Gulch, will also include a 30% concept design, a CEQA checklist, and a project implementation plan.

4.1.1 Hartnell Gulch
The Hartnell Gulch project, a proposed diversion to sanitary sewer and creek restoration project, is in the City of Monterey. The project will install a pump to divert underground seepage and stormwater into the sanitary sewer as well as potentially store wet weather runoff underground in the adjacent parking lot or divert it to Lake El Estero. The stream restoration component will improve and restore the riparian corridor. The approximately 1,100-acre tributary drainage area is in a disadvantaged community (DAC) tract. The project is estimated to achieve between 20 to 100 AFY of water supply. Project is identified in Water Recovery Study database as “DSS_planned_51.”

4.1.2 Lake El Estero
The Lake Estero project is in the City of Monterey. This is a lake project that will recover water supply via a diversion to sanitary sewer. The project will install a diversion valve from the box culvert on the north side of the lake to divert flows into the sanitary sewer system, instead of discharging into Monterey Bay. The project is estimated to achieve over 100 AFY of water supply Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 702, Packet Page 802 Monterey Peninsula Water Recovery Study Report 24 April 2018 from the approximately 2,800-acre tributary drainage area. The project is identified in the Water Recovery Study database as part of “LR_04.”

4.1.3 Tunnel and Calle Principal Stormwater Diversion
The Tunnel and Calle Principal stormwater diversion project is in the City of Monterey. The project will install a diversion pump for underground seepage and stormwater flow from the downtown Tunnel and Calle Principal storm drain gravity pipe and divert to the sanitary sewer instead of discharging into Monterey Bay. The project is estimated to achieve from 10 to 20 AFY of water supply from the approximately 290-acre tributary drainage area. The project is identified in the Water Recovery Study database as part of “DSS_04.”

4.1.4 South Carmel and 4th Avenue Dry Weather Diversion Located in the City of Carmel-by-the-Sea, the South Carmel and 4th Avenue Dry Weather Diversion project will divert dry weather runoff and small wet weather flows from the inland storm drain network to the sanitary sewer along San Antonio Avenue for treatment and reuse for golf course irrigation. The project is estimated to achieve between 20 to 100 AFY of water supply from its approximately 125-acre tributary drainage area. The project is identified in the Water Recovery Study database as part of “DSS_08.”

4.1.5 Pacific Grove-Monterey ASBS Watershed - David Avenue Reservoir The Pacific Grove-Monterey ASBS Watershed - David Avenue Reservoir project is in the City of Pacific Grove. This project will store rainwater for diversion to the sanitary sewer instead of discharging into Monterey Bay and the Pacific Grove ASBS region. This project is estimated to achieve from 10 to 20 AFY of water supply from its approximately 28-acre tributary drainage area.

The project is identified in the Water Recovery Study database as “LR_02.”

4.1.6 Del Monte Manor Park Infiltration
The Del Monte Manor Park Infiltration Project in the City of Seaside is a regional infiltration project. The project includes open space park improvements and flood management to infiltrate runoff from the surrounding right-of-way. The project is estimated to achieve from 10 to 20 AFY of water supply from its approximate 3.6-acre tributary drainage area that contains a DAC. The project is identified in the Water Recovery Study database as “INF_planned_19.”

4.1.7 Dry Well Aquifer Recharge Program
The Dry Well Aquifer Recharge Program in the City of Seaside will focus on using dry wells to recharge urban runoff to a potable water supply aquifer. The program will divert flows from the storm drain network to a water quality pretreatment system that will discharge to dry wells above the domestic supply aquifers in the Seaside Groundwater Basin. The project is estimated to achieve between 20 to 100 AFY of water supply. The project is identified in the Water Recovery Study database as “INF_DW_SEA.”
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 703, Packet Page 803 Monterey Peninsula Water Recovery Study Report 25 April 2018

4.2 Considerations for Future Improvements to Water and Wastewater Infrastructure
This Study focused on how to store, treat, and transport potential sources of runoff prior to entering existing water and wastewater infrastructure and did not consider improvements to the water and wastewater infrastructure. Consideration for future improvements to these systems is important to understanding how the water recovery opportunities identified in this Study may be utilized in the future. This is particularly the case for the DSS and LR projects that propose to divert runoff to the M1W and CAWD sanitary sewer systems for eventual recycling. As mentioned in Section 4, these project types are among the most cost effective and feasible for water recovery based on the characterization performed in this Study. Future improvements to water and wastewater infrastructure to facilitate additional water recover may include, but are not limited to, those described in the following sections.

4.2.1 Pure Water Monterey Ground Water Replenishment Expansion With the implementation of the Pure Water Monterey Ground Water Replenishment (GWR) project, potential diversions of runoff to the M1W sanitary sewer system during the dry season (i.e., from April to October) could result in recovery of hundreds to thousands of acre-feet per year of water supply. As summarized in Appendix A, an estimated 390 to 550 AFY of dry weather runoff and 4,300 to 5,200 AFY of wet weather runoff is generated in catchments that drain through M1W’s service area. All this dry weather runoff and a portion of the wet weather runoff could feasibly be diverted to the sanitary system for recycling at the RTP via the DSS and LR projects identified in this Study. In combination, the projects associated with Lake El Estero (LR_04), Laguna Grande - Roberts Lake (LR_12), David Avenue Reservoir (LR_02), and Del Monte - Navy Lake (LR_03) could recover at least a few hundred acre-feet per year of stormwater runoff via the GWR project.

Expansion of the Pure Water Monterey GWR project could allow for injection of a greater volume of AWPF product water into the Seaside Groundwater Basin and replenishment of the aquifer during the winter season, when source water is plentiful. Figures 7 and 8 provide flow schematics for the Pure Watery Monterey GWR project, as currently planned (MRWPCA, 2016). The water supply gap for the CalAm Monterey region will be reduced by 3,500 AFY (from 9,752 AFY to 6,252 AFY) with the currently planned Pure Water Monterey GWR project. The excess source water could potentially produce additional ATWF product water to reduce the region’s supply gap to as low as 2,118 to 3,428 AFY depending on the type of operational year, although the total use of source water would likely be less due to the seasonal timing of the excess (MRWPCA, 2016).

Nonetheless, with the implementation of Water Recovery Study projects on top of excess source water, closing the CalAm water gap appears to be within reach.

Expanding the planned 5 MGD ATWF to a 7 MGD capacity is the estimated maximum for the currently undeveloped footprint available at the RTP facility (M1W, 2018). While this would help shrink the water shortage gap, increasing the advanced treatment capacity beyond 7 MGD and building additional delivery infrastructure opens more possibilities for reliable runoff capture and recovery from LR and DSS, after all other existing source waters are fully utilized.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 704, Packet Page 804 Monterey Peninsula Water Recovery Study Report 26 April 2018

4.2.2 Recycled Water Storage Expansion
Expanded storage of recycled water from both the M1W RTP and CAWD WWTP would allow for collection of more wet weather runoff in the wet season for use in the dry season. This seasonality issue is at the crux of the water recovery problem because supply of source water occurs at a different time than demand. The cost of storing recycled water in new tanks or reservoirs is likely greater than utilizing available storage in the Seaside aquifers, but if there are political, hydrogeological, or other technical constraints to storing more recycled water in the groundwater basin, then new above ground storage would be an option. One major constraint to storing recycled water above ground is the potential for algae buildup with significant holding times (M1W, 2018). Enclosed storage could help address this problem but would be an expensive solution.

Currently the 80 acre-feet of storage in the SVRP only addresses diurnal storage needs for operations and not seasonal needs. Additional storage along the CSIP pipeline could be a strategic approach for storage expansion. Similarly, storage along the CAWD recycled pipelines could help address the seasonal discrepancy between supply and demand for golf course irrigation.

One readily available option for getting slightly more water treated at the AWTF and less discharged to the ocean outfall during storm events could be to temporarily utilize empty clarifier tanks at the RTP. This approach would involve detaining water coming from the RTP primary and secondary processes at the peak of the hydrograph so that more water could be metered to the AWTF and injected into the Seaside aquifers at the designed treatment rate.

4.2.3 Advanced Treatment at CAWD Wastewater Treatment Plant As summarized in Appendix A, an estimated 320 to 460 AFY of dry weather runoff and 1,700 AFY of urban wet weather runoff is generated in catchments that drain through the CAWD and PBCSD service area. Unlike the M1W system, only dry weather and some first flush runoff can be feasibly diverted to the CAWD/PBCSD sanitary sewer system for recycling because there is no current seasonal storage capacity or capability for advanced treatment of source water in the wet season. Advanced treatment capabilities at the CAWD WWTP, possibly coupled with a conveyance pipeline from the WWTP to injection wells into the Carmel River groundwater basin, is a possible pathway to recover wet weather runoff via CalAm’s aquifer storage and recovery (ASR) system. Piping of CAWD advanced treatment water to injection wells in the Seaside aquifers is believed to be cost prohibitive.

4.2.4 Micro-Treatment of Lake Water for Groundwater Replenishment If lake water could be treated by micro-treatment plants to a potable level, then this water could be sent directly to CalAm’s ASR system to replenish the Seaside aquifers. Alternatively, if the micro-treatment plants can produce water to a level comparable to the ATWF product water, then it could be piped directly to injection wells in the Seaside aquifers, like what is currently being implemented for the Pure Water Monterey GWR project. Timing-wise, this micro-treatment approach could provide flexibility to recover runoff whenever it is desired, including during the wet season, because operational constraints associated with the RTP, ATWF, SVRP, and its source waters would not exist. The source water locations for the micro-treatment plants could initially Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 705, Packet Page 805 Monterey Peninsula Water Recovery Study Report 27 April 2018 focus on Lake El Estero, Laguna Grande (Roberts Lake), and Del Monte (Navy Lakes) because the vicinity of these existing lakes to one another could allow for only one micro-treatment plant.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 706, Packet Page 806 Monterey Peninsula Water Recovery Study Report 28 April 2018

5. REFERENCES
Association for the Advancement of Cost Engineering (AACE) International. 1997.

Recommended Practice No. 17R-97 – Cost Estimate Classification System.

California State Water Resources Control Board (SWRCB). 1995. Order on Four Complaints Filed Against the California-American Water Company – Carmel River, Monterey County – Order No. WR 95-10. July 6.

California State Water Resources Control Board (SWRCB). 2009. Cease and Desist Order WR 2009-0060, In the Matter of the Unauthorized Diversion and Use of Water by the California American Water Company.

California State Water Resources Control Board (SWRCB). 2016. Real‐Time Cloud ‐Based Continuous Monitoring and Adaptive Storm Water Control STORMS Seminar. April.

Carmel Area Wastewater District (CAWD). 2017. Website: http://cawd.org.

City of Pacific Grove. 2014. Local Water Project Draft Facility Plan Report. WRFP No. 3316-010. 31 January.

City of Pacific Grove and City of Monterey. 2016. Pacific Grove Area of Special Biological Significance (ASBS) Compliance Plan. Prepared by Fall Creek Engineering, Inc. September

19. County of Orange. 2017. South Orange County Watershed Management Area Water Quality Improvement Plan. April 1.

Geosyntec. 2017. Grant Agreement Task 4.4: Methodology for Integrated Identification, Prioritization, and Analysis of Monterey Peninsula SWRP Projects Memorandum. 28 November.

Irvine Ranch Water District (IRWD) and Municipal Water District of Orange County (MWDOC). 2004. The Residential Runoff Reduction Study. July.

Monterey One Water (M1W). 2018. Email and phone correspondence with Alison Imamura.

March 20 to 23.

Monterey Peninsula Water Management District (MPWMD). 2014. Monterey Peninsula, Carmel Bay, and South Monterey Bay Integrated Regional Water Management Plan Update. May.

Monterey Regional Water Pollution Control Agency (MRWPCA). 2016. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report.

State Clearinghouse No. 2013051094. January.

Monterey Regional Water Pollution Control Agency (MRWPCA). 2017. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report.

State Clearinghouse No. 2013051094. Addendum No. 3. October 24.

Monterey Peninsula Water Management District (MPWMD). 2017. Website for Monterey Water Conservation: http://www.montereywaterinfo.org/rebates/.

Pure Water Monterey. 2017. Website: http://purewatermonterey.org.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 707, Packet Page 807 Monterey Peninsula Water Recovery Study Report 29 April 2018 Water Environment Research Foundation (WERF). 2014. Transforming Our Cities: HighPerformance Green Infrastructure.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 708, Packet Page 808 Monterey Peninsula Water Recovery Study Report

FIGURES
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 709, Packet Page 809 El Toro
Creek-Salinas
River
Big Sur
River-Frontal
Pacific Ocean
Carmel
River
Canyon Del
Rey-Frontal
Monterey Bay
SAND
CITY

DEL REY

OAKS CARMEL BY-THE-SEA

MONTEREY

SEASIDE
Cachagua Creek
Rana Creek
Tularcitos Creek
Las Gazas Creek
Pine Creek
Ridge
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£¤183
£¤101
Malpas o Creek
Carm el River
Carme l River
Carmel River
San Jose Creek
Majors Creek

PACIFIC GROVE
P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 1 - Planning Area.mxd 3/28/2018 9:33:02 AM Monterey Peninsula Water Recovery Study
Study Planning Area
Figure
1 Oakland, CA April 2018
Notes:

Areas outside of city boundaries are unincorporated Monterey County.

Shapefiles and maps received from the Association of Monterey Bay Area Governments and the Monterey Peninsula Water Management Agency. ³ 0 9
Miles
Legend
Monterey Peninsula
IRWMP/SWRP Boundary
Monterey Peninsula Water
Management District
Boundary
Carmel Area Waste Water
District
USGS / DWR Watershed
City Limit
Groundwater Basins
Adjucated Seaside
Groundwater Basin
Salinas Valley Corral De
Tierra Area
Salinas Valley Marina Area
Carmel Valley Groundwater
Basin
303(d) Listed River/Stream
River/Stream
Highway
Waterbody
Federal, State, and Regional
Parks, and Other Open
Lands
Area of Special Biological
Significance Notes:
*Pink hue indicates Groundwater Basin
is outside of IRWMP Area
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 710, Packet Page 810 Canyon Del
Rey-Frontal
Monterey Bay
El Toro
Creek-Salinas
River
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Pacific Ocean
Carmel
River
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Catchments Overview
Figure
2 Oakland, CA April 2018
³ 0 4.5 9
Miles
Legend
Monterey Peninsula IRWMP/SWRP
Boundary
Stream
Waterbody
USGS / DWR Watershed
Carmel River Catchment
Big Sur River - Frontal Pacific Ocean
Catchments (BP)
Canyon Del Rey - Frontal Monterey
Bay Catchments (CM)
El Toro Creek - Salinas River
Catchment
CM-01
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See Detail Map
Figure 2A
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P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 2A - Catchments Detail.mxd 3/28/2018 9:28:51 AM Monterey Peninsula Water Recovery Study
Catchments Detail Map
Figure
2A
Oakland, CA April 2018
Legend
Monterey Peninsula
IRWMP/SWRP Boundary
Stream
Waterbody
USGS / DWR Watershed
Canyon Del Rey - Frontal
Monterey Bay Catchments (CM)
Carmel River Catchment
El Toro Creek - Salinas River
Catchment
0 4,000 8,000
Feet
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Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 712, Packet Page 812 Interaction between Water Recovery Study
Analyses and SWRP Analyses
Monterey Peninsula Water Recovery Study
Figure
WW2405 April 2018
3 Notes:

1. Public Parcels/ ROWs and Private Undeveloped Parcels

2. Not identified as potential Water Recovery Study Project

3. In some cases, a project may have multiple facility characteristics Conduct GIS-Based Opportunity Analyses:

1. Preliminary Feasibility Analysis

2. Infiltration Screening
Obtain Planned Projects from
Cooperating Entities, Interested
Parties, and Stakeholders
Screen for Inclusion in Water Recovery Study
Conduct Water Recovery Study Specific Project
Opportunity Analyses:
• Storm Drain Diversion Project Opportunities
• Lake and Reservoir Project Opportunities
Identify Infiltration Feasible over Water
Supply Aquifers Project Opportunities1
Identify Capture and Use Project
Opportunities: Private and Public
Compile All Other Public Irrigated Fields in Urban Areas Parcels and ROWs2
Compile Projects Not Feasible for Water
Recovery Study
Conduct Project Classification - Regional, Parcel, or ROW Identify Facility Characteristics3 –Water Recovery Project; Flood Control Facility; Green Infrastructure; Non-Green Infrastructure Treatment Control; Stream Restoration, Hydromodification, or Habitat Restoration; Public Use Area/Public Education
Compile Identified Water Recovery Study Projects
Merge All Identified Stormwater Resource Plan Projects into Analysis Database
Characterize Project Implementation Feasibility for
Water Recovery Study
SWRP Task Water Recovery
Study Task
Task for
Both
Complete Metrics-Based Multi-Benefit Evaluation for all projects for Stormwater Resource Plan
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Unit Project Cost, $/AF
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$2,000-$5,000
$5,000-$10,000
$10,000+
Recovered Water Volume, AFY
100+
20-100
10-20
5-10
0-5
Project Type
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Capture and Use
Lakes / Reservoirs
^_ Diversion to Sanitary Sewer
k Diversion of Storm Drain or Stream
0 2.75 5.5
Miles
³ Monterey Peninsula Water Recovery Study
Identified Project Opportunities
Overview
Figure
4 Oakland, CA April 2018
Notes:

See Figure 2 for catchment labels and details.

See detail maps for project footprints.

Figure 4D: Laguna Seca Area
Figure 4B: Seaside Area
Figure 4A: Monterey Bay Area
Figure 4C: Carmel Valley Area
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 714, Packet Page 814 ^_
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^_
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DSS_02
DSS_04
DSS_03
DSS_01
DSS_planned_60
CU_003 CU_004
CU_005
CU_006
CU_007
CU_008
CU_009
CU_010
CU_011
CU_012
CU_013 CU_014
CU_015
CU_016 CU_017
CU_018
CU_019
CU_020
CU_021
CU_022
CU_023
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CU_036
CU_037
CU_038
CU_039
CU_040
CU_041
CU_042
CU_043
CU_044
CU_084
CU_085
CU_087
LR_planned_79
LR_02
LR_03
LR_04
LR_05
LR_11
CU_planned_02
CU_planned_03
CU_planned_04
CU_planned_09
CU_planned_33
CU_planned_42
CU_planned_01
DSS_planned_51
P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 4A - WRS Projects - Monterey.mxd 3/22/2018 3:41:34 PM Legend
Monterey Peninsula IRWMP/SWRP Boundary
Stream
Storm Drain
Waterbody
Catchment Boundary
Unit Project Cost, $/AF
<$800
$800-$2,000
$2,000-$5,000
$5,000-$10,000
$10,000+
Recovered Water Volume, AFY
100+
20-100
10-20
5-10
0-5
Project Type
Infiltration to a Water Supply Aquifer
Capture and Use
Lakes / Reservoirs
^_ Diversion to Sanitary Sewer
k Diversion of Storm Drain or Stream
0 0.5 1
Miles
³ Monterey Peninsula Water Recovery Study
Identified Project Opportunities
Monterey Bay Area
Figure
4A
Oakland, CA April 2018
Notes:

See Figure 2A for catchment labels and details.

See Figure 4B for labels in the Seaside / Sand City area.

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INF_072
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INF_088 INF_087
INF_089
INF_090
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INF_093
INF_094
INF_095
INF_096
INF_097 INF_098
INF_planned_19
LR_12
DSS_07
DSS_06
DSS_05
P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 4B - WRS Projects -Seaside Detail.mxd 3/28/2018 9:23:47 AM Legend
Monterey Peninsula IRWMP/SWRP Boundary
Stream
Storm Drain
Waterbody
Catchment Boundary
Unit Project Cost, $/AF
<$800
$800-$2,000
$2,000-$5,000
$5,000-$10,000
$10,000+
Recovered Water Volume, AFY
100+
20-100
10-20
5-10
0-5
Project Type
Infiltration to a Water Supply Aquifer
Capture and Use
Lakes / Reservoirs
^_ Diversion to Sanitary Sewer
k Diversion of Storm Drain or Stream
0 1,800 3,600
Feet ³
Monterey Peninsula Water Recovery Study
Identified Project Opportunities
Seaside Area
Figure
4B
Oakland, CA April 2018
Notes:

See Figure 2A for catchment labels and details.

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P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 4C - WRS Projects - Carmel Detail.mxd 3/28/2018 9:19:58 AM Legend
Monterey Peninsula IRWMP/SWRP Boundary
Stream
Storm Drain
Waterbody
Catchment Boundary
Unit Project Cost, $/AF
<$800
$800-$2,000
$2,000-$5,000
$5,000-$10,000
$10,000+
Recovered Water Volume, AFY
100+
20-100
10-20
5-10
0-5
Project Type
Infiltration to a Water Supply Aquifer
Capture and Use
Lakes / Reservoirs
^_ Diversion to Sanitary Sewer
k Diversion of Storm Drain or Stream
0 0.5 1
Miles
Monterey Peninsula Water Recovery Study
Identified Project Opportunities
Carmel Valley Area
Figure
4C
Oakland, CA April 2018
Notes:

See Figure 2 for catchment labels and details.
³
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INF_104
INF_105 INF_106
INF_107
INF_108
INF_109
INF_110
LR_planned_79
LR_08
CU_planned_42
LR_01
LR_06
LR_07
LR_10
P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 4D - WRS Projects - Laguna Seca.mxd 3/22/2018 3:13:40 PM Legend
Monterey Peninsula IRWMP/SWRP Boundary
Stream
Storm Drain
Waterbody
Catchment Boundary
Unit Project Cost, $/AF
<$800
$800-$2,000
$2,000-$5,000
$5,000-$10,000
$10,000+
Recovered Water Volume, AFY
100+
20-100
10-20
5-10
0-5
Project Type
Infiltration to a Water Supply Aquifer
Capture and Use
Lakes / Reservoirs
^_ Diversion to Sanitary Sewer
k Diversion of Storm Drain or Stream
0 0.5 1
Miles
³ Monterey Peninsula Water Recovery Study
Identified Project Opportunities
Laguna Seca Area
Figure
4D
Oakland, CA April 2018
Notes:

See Figure 2A for catchment labels and details.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 718, Packet Page 818 CARMEL

BY-THE-SEA

DEL REY
OAKS

MONTEREY

PACIFIC

GROVE SAND
CITY

SEASIDE
P:\GIS\MRWPCA\Project\Water Recovery Study Report\Figure 5 - Infiltration Feasibility.mxd 3/28/2018 9:25:52 AM Monterey Peninsula Water Recovery Study
Feasibility for Infiltration
to a Water Supply Aquifer
Figure
5 Oakland, CA April 2018
³ 0 4 8
Miles
Legend
Monterey Peninsula
IRWMP/SWRP Boundary
River/Stream
Waterbody
USGS / DWR Watershed
City Limit
Adjucated Seaside Groundwater
Basin
Salinas Valley Corral De Tierra
Area
Salinas Valley Marina Area
Carmel Valley Alluvial
Area Feasible for Infiltration to a
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 719, Packet Page 819 Water Supply Aquifer Example Nomograph for Runoff Capture
Monterey Peninsula Water Recovery Study
Figure
WW2405 April 2018
6 Notes:

Example nomograph shown is for drainage areas with 50% imperviousness underlain by Soil Type A.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 720, Packet Page 820 Pure Water Monterey Flow Schematic -
Source Water to Treatment
Monterey Peninsula Water Recovery Study
Figure
WW2405 April 2018
7 Notes:
a) Monterey Regional Water Pollution Control Agency (MRWPCA). 2016. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report. State Clearinghouse No. 2013051094. January. b) Monterey Regional Water Pollution Control Agency (MRWPCA). 2018. Email: RE: Monterey Peninsula Water Recovery Study - DRAFT Report for Review. from Alison Nemura. March 20.
0 to 478 AFYa
1,020 to 2,003 AFYa
721 to 1,071 AFYa
2,362 to 2,579
AFYa
1,250 AF
Storagea
0 AFYa
Raw Municipal Wastewater Source Water
= 19,279 AFY (17.2 MGD)b
Image taken from Figure 2-19 of the Pure Water Monterey GWR Project EIRa Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 721, Packet Page 821 Pure Water Monterey Flow Schematic -
Regional Treatment Plant
Monterey Peninsula Water Recovery Study
Figure
WW2405 April 2018
8 Notes:
a) Monterey Regional Water Pollution Control Agency (MRWPCA). 2016. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report. State Clearinghouse No. 2013051094.January. b) Monterey Regional Water Pollution Control Agency (MRWPCA). 2017. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report. State Clearinghouse No. 2013051094. Addendum No. 3. October 24. c) See Figure 7
Unused Treated Municipal Wastewater
= 1,503 to 1,992 AFYa
23,847 to 25,193 AFYc
80 AF
Storagea
Marina Coast Water District (MCWD)
Urban Landscape Irrigation
= 600 AFYb
3,500 AFYb
962
AFY
17,500 AFYa
Image taken from Figure 2-20 of the Pure Water Monterey GWR Project EIRa Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 722, Packet Page 822 Monterey Peninsula Water Recovery Study Report

APPENDIX A
Summary of Catchment Size, Level of Urban
Development, and Estimated Runoff
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 723, Packet Page 823 Appendix A Summary of Catchment Size, Level of Urban Development, and Estimated Runoff Monterey Peninsula Water Recovery Study Report April 2018 Catchment ID Tributary
Area (acres)
%
Urban
Development1
%
Impervious
Cover1
Estimated
Dry Weather
Runoff (AFY)2
Estimated Wet
Weather Runoff
(AFY)3
Estimated
Urban Wet
Weather
Runoff (AFY)3
Associated
Sanitary
Sewer System
CM-014 654 93.6 46.1 16 to 22 220 218 M1W
CM-02 818 95.8 45.9 20 to 28 274 272 M1W
CM-03 419 94.5 26.3 10 to 14 92 90 M1W
CM-04 5,284 35.0 8.5 47 to 67 566 382 M1W
CM-05 1,337 72.9 19.6 25 to 35 240 217 M1W
CM-06 2,067 58.1 37.8 30 to 43 589 575 M1W
CM-07 10,837 31.7 11.1 87 to 124 1,359 925 M1W
CM-08 105 91.5 56.5 2 to 3 43 43 M1W
CM-09 1,991 59.5 19.3 30 to 43 354 301 M1W
CM-10 2,637 47.1 13.5 31 to 45 373 289 M1W
CM-11 1,307 78.3 20.9 26 to 37 244 226 M1W
CM-12 7 74.6 45.9 - 2 2 M1W
CM-13 232 99.9 60.5 6 to 8 102 102 M1W
CM-14 209 93.2 31.6 5 to 7 52 51 M1W
CM-15 309 99.9 60.7 8 to 11 137 137 M1W
CM-16 41 100.0 64.2 1 19 19 M1W
CM-17 27 98.9 53.2 1 10 10 M1W
CM-18 30 100.0 54.2 1 12 12 M1W
CM-19 53 100.0 55.6 1 to 2 21 21 M1W
CM-20 19 100.0 53.2 0 to 1 7 7 M1W
CM-21 255 99.1 44.0 6 to 9 82 82 M1W
CM-22 15 100.0 65.2 0 to 1 7 7 M1W
CM-23 241 99.9 49.8 6 to 9 87 87 M1W
CM-24 34 100.0 46.3 1 12 12 M1W
CM-25 49 97.4 28.6 1 to 2 11 11 M1W
CM-26 42 100.0 42.8 1 to 2 13 13 M1W
CM-27 69 100.0 29.0 2 16 16 M1W
CM-28 28 100.0 34.2 1 7 7 M1W
CM-29 78 100.0 15.1 2 to 3 12 12 M1W
CM-30 59 94.2 22.3 1 to 2 12 11 M1W
CM-31 56 97.7 33.5 1 to 2 15 14 M1W
CM-32 40 85.4 24.3 1 8 8 M1W
CM-33 198 83.0 20.2 4 to 6 36 34 M1W
CM-34 33 78.6 31.2 1 8 8 M1W
CM-35 533 77.0 26.1 10 to 15 116 108 M1W
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 724, Packet Page 824 Appendix A Summary of Catchment Size, Level of Urban Development, and Estimated Runoff Monterey Peninsula Water Recovery Study Report April 2018 Catchment ID Tributary
Area (acres)
%
Urban
Development1
%
Impervious
Cover1
Estimated
Dry Weather
Runoff (AFY)2
Estimated Wet
Weather Runoff
(AFY)3
Estimated
Urban Wet
Weather
Runoff (AFY)3
Associated
Sanitary
Sewer System
CM-36 352 59.8 9.6 5 to 8 41 33 CAWD/PBCSD
CM-37 1,140 54.7 7.7 16 to 23 116 91 CAWD/PBCSD
CM-38 578 69.6 11.7 10 to 15 75 65 CAWD/PBCSD
CM-39 806 45.2 4.6 9 to 13 64 43 CAWD/PBCSD
CM-40 1,957 63.4 8.2 31 to 45 206 171 CAWD/PBCSD
CM-41 875 57.2 6.2 13 to 18 80 62 CAWD/PBCSD
CM-42 243 88.9 24.5 5 to 8 51 49 CAWD/PBCSD
CM-43 43 99.1 28.0 1 to 2 10 10 CAWD/PBCSD
CM-44 11 64.1 29.2 - 3 2 CAWD/PBCSD
Carmel River 162,411 5.0 0.6 205 to 293 7,753 1,084 CAWD/PBCSD BP-15 142 54.8 16.5 2 to 3 23 19 CAWD/PBCSD
BP-2 14,030 5.7 0.5 20 to 29 654 86 CAWD/PBCSD
El Toro Creek
- Salinas River 1,486 14.7 1.9 6 to 8 86 30 N/A
Total 214,186 13.1 3.4 711 to 1016 14,320 6,078
M1W Total 30,112 50.7 18.6 387 to 552 5,160 4,333

CAWD/PBCSD
Total 182,589 6.9 0.9 319 to 455 9,074 1,715
1 Level of urban development and impervious cover was calculated based on the 2011 National Land Cover Dataset (NLCD). 2 Average annual dry weather runoff was calculated based on applying an assumed dry weather flow rate (0.7 to 1.0 x 10-4 cfs/urban acre, per Pacific Grove ASBS dry weather diversion data) over six months duration to the area of urban development. 3 Average annual wet weather runoff was calculated based on multiplying a runoff coefficient (per Attachment 1 of Central Coast Regional Water Board’s Resolution No. R3-2013-0032) by a conservatively low mean annual precipitation (12.8 inches), and the tributary area.
4 Canyon Del Rey – Frontal Monterey Bay Catchment (CM). 5 Big Sur River – Frontal Pacific Ocean Catchment (BP).

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 725, Packet Page 825 Monterey Peninsula Water Recovery Study Report

APPENDIX B
List of Technical Stakeholders
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 726, Packet Page 826 Appendix B
Monterey Peninsula Water Recovery Study Report April 2018 Water Recovery Study Technical Stakeholder Group List
Agency/Organization Name Contact Information
Monterey One Water Jeff Condit [email protected]
Monterey One Water Alison Imamura [email protected]
Monterey One Water Mike McCullough [email protected]
Monterey Peninsula Water Management
District Larry Hampson [email protected]
Monterey Peninsula Water Management
District Tom Lindberg [email protected]
Carmel Area Wastewater District Drew Lander [email protected] City of Seaside Scott Ottmar [email protected]
City of Monterey Jeff Krebs [email protected]
City of Monterey Tricia Wotan [email protected]
City of Monterey Laurie Willamson [email protected] City of Pacific Grove Milas Smith [email protected] City of Carmel Agnes Topp [email protected]
City of Sand City Leon Gomez [email protected]
Monterey County Tom Harty [email protected]
Seaside Groundwater Basin Technical
Manager Bob Jaques [email protected]
Monterey Peninsula Regional Water
Authority Jim Cullem [email protected]
California American Water Christopher Cook [email protected] California American Water Ian Crooks [email protected] USGS Rich Niswonger [email protected]
Monterey County Water Resources
Agency Howard Franklin [email protected]
Marina Coast Water District Brian True [email protected]
Stanford University Rosemary Knight or
Meredith Goebel
[email protected]
[email protected]
City of Monterey (retired City Engineer) Tom Reeves [email protected] Big Sur Land Trust Sarah Hardgrave [email protected] Consultant Project Team
Geosyntec Consultants Lisa Austin
Judd Goodman
[email protected]
[email protected]
Denise Duffy & Associates Denise Duffy
Diana Staines
[email protected]
[email protected]
EOA, Inc Jill Bicknell
Vishakha Atre
[email protected]
[email protected]
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 727, Packet Page 827 Monterey Peninsula Water Recovery Study Report

APPENDIX C
Water Recovery Project Feasibility Matrix
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 728, Packet Page 828 Appendix C Water Recovery Study Feasibility Matrix

1. WATER
SUPPLY

2. PLANNING LEVEL
COST
WRS Project ID/
SWRP db_index1 Included Stakeholder Projects2 Project Category3 Owner4 Project Name5 Jurisdiction6 Sanitary Sewer
Diversion Destination
(CAWD or M1W)14
Catchment Name15
Number of Identified
Project Opportunities
in Catchment16
CU 076 Capture and Use CITY OF CARMEL BY THE SEA CARMEL BY-THE-SEA 0-5 $10,000+ $100k-$1M none Higher no no na CM-41 2 CU_077 Park Branch Library - Devendorf
Rainwater Capture Capture and Use CITY OF CARMEL BY THE SEA CARMEL BY-THE-SEA 0-5 $10,000+ $1M-$10M none Higher no no na CM-42 1 CU 078 Capture and Use DIOCESE OF MONTEREY EDUCATION & CARMEL BY-THE-SEA 5-10 $10,000+ $1M-$10M none Higher no no na Carmel River 36 DSS_08
4th Avenue Dry Weather Diversion
Pilot; South Carmel Dry Weather
Diversion; Scenic Road Dry-Weather
Diversion
Diversion to Sanitary Sewer Scenic & 8th Pump Station CARMEL BY-THE-SEA 20-100 $2,000-$5,000 $1M-$10M none Higher no no CAWD na na DSS_09 Scenic Road Dry-Weather Diversion Diversion to Sanitary Sewer Bay & Scenic Pump Station CARMEL BY-THE-SEA 0-5 $2,000-$5,000 <$100k none Higher no no CAWD na na DSS 10 Diversion to Sanitary Sewer R6PS 2 CARMEL BY-THE-SEA 0-5 $2,000-$5,000 <$100k none Higher no no CAWD na na CU 084 Capture and Use CITY OF DEL REY OAKS CITY HALL DEL REY OAKS 5-10 $10,000+ $10M+ none Medium no no na CM-07 41 CU_planned_42
Non-Potable Well Water Conveyance
System (with Aquifer and Well
System Testing/Evaluations)
Capture and Use MONTEREY PENINSULA AIRPORT DIST DEL REY OAKS 0-5 $10,000+ $100k-$1M none Lower no no na CM-07 41 LR 08 Lakes / Reservoirs na Monterey Peninsula Regional DEL REY OAKS 20-100 <$800 $100k-$1M some Higher no no M1W CM-07 41 LR planned 79 New Detention Behind Safeway Lakes / Reservoirs CITY OF DEL REY OAKS DEL REY OAKS 20-100 <$800 $100k-$1M some Higher no no M1W CM-07 41 CU 005 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no no na CM-21 6 CU 016 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Higher no no na CM-15 7 CU 017 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-15 7 CU 018 Capture and Use MONTEREY SCHOOL DIST MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-15 7 CU 019 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ <$100k none Medium no no na CM-15 7 CU 020 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ <$100k none Medium no no na CM-15 7 CU 021 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-15 7 CU 022 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no no na CM-15 7 CU 023 Capture and Use MONTEREY CITY SCHOOL DIST MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-13 3 CU 024 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 025 Capture and Use MONTEREY CITY SCHOOL DIST MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 026 Capture and Use MONTEREY CITY SCHOOL DIST MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 027 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 028 Capture and Use MONTEREY UNION HIGH SCHOOL MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 029 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-13 3 CU 030 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no no na CM-13 3 CU 031 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no no na CM-11 11 CU 032 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-11 11 CU 033 Capture and Use DIOCESE OF MONTEREY EDUCATION & MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-10 7 CU 034 Capture and Use ROMAN CATHOLIC BISHOPS OF MTY MONTEREY 10-20 $10,000+ $10M+ none Medium no no na CM-10 7 CU 035 Capture and Use CITY OF MONTEREY MONTEREY 20-100 $10,000+ $10M+ none Medium no no na CM-10 7 CU 036 Capture and Use MTY PENINSULA JR COLLEGE DIST MONTEREY 10-20 $10,000+ $10M+ none Medium no no na CM-10 7 CU 037 Capture and Use CITY OF MONTEREY MONTEREY 5-10 $10,000+ $10M+ none Higher no no na CM-10 7 CU 038 Capture and Use U S NAVY GENERAL LINE SCHOOL MONTEREY 20-100 $10,000+ $10M+ none Medium no no na CM-09 9 CU 039 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-09 9 CU 040 Capture and Use MONTEREY PENINSULA UNIFIED MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-09 9 CU 041 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ <$100k none Medium no no na CM-09 9 CU 042 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Higher no no na CM-07 41 CU 043 Capture and Use SANTA CATALINA SCHOOL MONTEREY 5-10 $10,000+ $1M-$10M none Medium no no na CM-09 9 CU 044 Capture and Use PEBBLE BEACH COMPANY Del Monte Golf Course MONTEREY 20-100 $2,000-$5,000 $1M-$10M none Lower no no na CM-10 7 CU 045 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no no na CM-09 9 CU 046 Capture and Use CITY OF MONTEREY MONTEREY 0-5 $10,000+ <$100k none Medium no no na CM-09 9 CU 085 Capture and Use U S A Monterey Pines Golf Club MONTEREY 20-100 $2,000-$5,000 $1M-$10M none Lower no no na CM-09 9 CU_planned_02 Pacific Grove Drainage Stormdrain
Retrofit Capture and Use GOVT LAND MONTEREY 0-5 $10,000+ $1M-$10M none Higher no no na CM-11 11 CU planned 03 Hilltop Passive Irrigation System Capture and Use GOVT LAND MONTEREY 5-10 $10,000+ $1M-$10M none Higher no no na CM-11 11 CU_planned_04 Library Drainage Stormdrain Retrofit Capture and Use GOVT LAND MONTEREY 0-5 $10,000+ $100k-$1M none Lower no no na CM-11 11 CU_planned_09 Soldier Field Passive Irrigation System Capture and Use GOVT LAND MONTEREY 10-20 $10,000+ $10M+ none Lower no no na CM-14 1 DSS 03 Diversion to Sanitary Sewer Reeside (Pump Station #7) MONTEREY 10-20 $2,000-$5,000 $100k-$1M none Higher no no M1W na na DSS_04 City of Monterey Tunnel & Calle
Principal Storm Water Diversion Diversion to Sanitary Sewer MONTEREY ONE WATER Monterey Pump Station MONTEREY 100+ $2,000-$5,000 $1M-$10M none Higher no no M1W na na DSS_planned_51 Hartnell Gulch Creek Restoration and
Storm Water Diversion Diversion to Sanitary Sewer CITY OF MONTEREY MONTEREY 20-100 $800-$2,000 $1M-$10M some Higher yes no M1W CM-11 11 DSS_planned_60
Pacific Grove-Monterey ASBS WetDry Weaterth Storm Water Capture and Diversion Project
Diversion to Sanitary Sewer CITY OF MONTEREY Pump Station #11 MONTEREY 100+ $800-$2,000 $1M-$10M some Higher no no M1W na na INF 099 Infiltration to a Water Supply Aquifer COMMUNITY HOSPITAL RYAN RANCH MONTEREY 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 100 Infiltration to a Water Supply Aquifer COMMUNITY HOSPITAL PROPERTIES MONTEREY 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-07 41 INF 101 Infiltration to a Water Supply Aquifer O DRISCOLL PAUL D & MARGARET M TRS MONTEREY 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-07 41 INF 102 Infiltration to a Water Supply Aquifer HALPERN JAMES A & CHERYL HALPERN TRS MONTEREY 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 103 Infiltration to a Water Supply Aquifer HARRIS COURT ASSOCIATES LLC MONTEREY 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 104 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 20-100 $5,000-$10,000 $1M-$10M none Medium no yes na CM-07 41 INF 105 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 10-20 $5,000-$10,000 $1M-$10M none Medium no yes na CM-07 41 INF_106 Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SCHOOL DIST MONTEREY 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 INF 107 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 0-5 $10,000+ <$100k none Medium no yes na CM-07 41 INF 108 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 109 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 0-5 $10,000+ $1M-$10M none Medium no yes na CM-07 41 INF 110 Infiltration to a Water Supply Aquifer CITY OF MONTEREY MONTEREY 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 LR_03
Lake Del Monte Outflow Diversion;
Lake Del Monte Outfall Replacement;
Del Monte Lake Storm Water
Diversion
Lakes / Reservoirs na Lake Del Monte MONTEREY 100+ <$800 $100k-$1M Most Higher yes no M1W CM-09 9 LR_04
Lake El Estero/Whasherwomen's
Pond Storm Water Diversion; Pearl
Street/Figurao Box Culvert Diversion;
Navy Lake and Washerwomen's Pond
Outlet
Lakes / Reservoirs na Lake El Estero MONTEREY 100+ <$800 $100k-$1M Most Higher yes no M1W CM-10 7 LR_12 Laguna Grande Well Upgrades;
Laguna Grande Water Recovery Lakes / Reservoirs na Roberts Lakes / Laguna Grande MONTEREY 100+ <$800 $100k-$1M Most Higher yes no M1W CM-07 41 CU_planned_24 MRSWMP Cistern Rebate Program Capture and Use Multiple na 0-5 $10,000+ $100k-$1M none Lower no no na na na CU_planned_31 Monterey Bay-Friendly Landscaping
Rebate Program Capture and Use Multiple na 0-5 $10,000+ <$100k none Lower no no na na na CU 003 Capture and Use PACIFIC GROVE UNIFIED SCHOOL PACIFIC GROVE 0-5 $10,000+ $100k-$1M none Medium no no na CM-35 4 CU 004 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ $1M-$10M none Medium no no na CM-35 4 CU 006 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ <$100k none Medium no no na CM-21 6 CU 007 Capture and Use PACIFIC GROVE HIGH SCHOOL DIST PACIFIC GROVE 5-10 $10,000+ $1M-$10M none Medium no no na CM-21 6 CU 008 Capture and Use PACIFIC GROVE SCHOOL DIST PACIFIC GROVE 5-10 $10,000+ $1M-$10M none Medium no no na CM-21 6 CU 009 Capture and Use PACIFIC GROVE UNIFIED SCHOOL PACIFIC GROVE 10-20 $10,000+ $1M-$10M none Medium no no na CM-35 4 CU 010 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ $1M-$10M none Medium no no na CM-33 2 CU_011 Capture and Use PACIFIC GROVE UNIFIED SCHOOL DISTRICT PACIFIC GROVE 0-5 $10,000+ $100k-$1M none Medium no no na CM-33 2 CU 012 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ $1M-$10M none Higher no no na CM-23 1 CU 013 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ <$100k none Higher no no na CM-22 1 CU 014 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ $1M-$10M none Higher no no na CM-20 1 CU 015 Capture and Use CITY OF PACIFIC GROVE PACIFIC GROVE 0-5 $10,000+ $1M-$10M none Higher no no na CM-24 1 Net Recovered
Water Volume
(AFY)7

1. WATER
SUPPLY

3. EASE OF IMPLEMENTATION
Unit Project Cost
($/AF)8
Financial -
Total Capital Cost
($)9
Portion Diverted to
Sanitary Sewer as Wet
Weather Runoff
(none, some, most)10
Complexity of Location due
to Permitting and Land
Acquisition
(lower, medium, higher)11
Potential Water
Quality
Constraints
(yes, no)12
Water Loss Considerations
Associated with
Hydrogeology
(yes, no)13
Project Coordination
CU 087 Capture and Use CITY OF PACIFIC GROVE Pacific Grove Golf Links PACIFIC GROVE 5-10 $10,000+ $1M-$10M none Higher no no na CM-29 2 CU planned 33 Urban Greening Plan Capture and Use Multiple PACIFIC GROVE 10-20 $10,000+ $10M+ none Higher no no na CM-21 6 DSS 01 Diversion to Sanitary Sewer MONTEREY ONE WATER Pump Station #16 PACIFIC GROVE 10-20 $2,000-$5,000 $100k-$1M none Higher no no M1W na na DSS 02 Diversion to Sanitary Sewer MONTEREY ONE WATER Pump Station #15.5 PACIFIC GROVE 0-5 $2,000-$5,000 $100k-$1M none Higher no no M1W na na LR 02 David Ave Reservoir Lakes / Reservoirs na David Ave Reservoir PACIFIC GROVE 5-10 $800-$2,000 $100k-$1M Most Higher no no M1W CM-21 6 LR 05 Lakes / Reservoirs na Glen of Pacific Grove PACIFIC GROVE 5-10 $800-$2,000 <$100k Most Higher no no M1W CM-35 4 LR 11 Lakes / Reservoirs na Pacific Grove Golf Links PACIFIC GROVE 5-10 $800-$2,000 $100k-$1M Most Higher no no M1W CM-29 2 CU 073 Capture and Use CITY OF SAND CITY SAND CITY 0-5 $10,000+ $100k-$1M none Higher no no na CM-06 69 INF 036 Infiltration to a Water Supply Aquifer DBO DEVELOPMENT NO 30 SAND CITY 0-5 $10,000+ $100k-$1M none Higher no yes na CM-06 69 INF 037 Infiltration to a Water Supply Aquifer DBO DEVELOPMENT NO 30 SAND CITY 0-5 $10,000+ $100k-$1M none Higher no yes na CM-06 69 CU_048 Capture and Use FPG CALIFORNIA INC SEASIDE 0-5 $10,000+ $100k-$1M none Lower no no na CM-05 11 CU_049 Project "A2" from campus Storm
Water Master plan Capture and Use CALIFORNIA STATE UNIVERSITY MONTEREY BAY SEASIDE 10-20 $10,000+ $10M+ none Medium no no na CM-03 1 CU_054 Former Fort Ord Stormwater Outfall
Closure Capture and Use CITY OF SEASIDE SEASIDE 20-100 $800-$2,000 $1M-$10M none Lower no no na CM-05 11 CU 059 Capture and Use CITY OF SEASIDE SEASIDE 0-5 $10,000+ $1M-$10M none Medium no no na CM-06 69 CU 067 Capture and Use MONTEREY PEN UNIFIED SCH DIST SEASIDE 5-10 $10,000+ $10M+ none Medium no no na CM-07 41 CU 068 Capture and Use CITY OF SEASIDE CITY HALL SEASIDE 0-5 $10,000+ $1M-$10M none Medium no no na CM-07 41 CU 069 Capture and Use CITY OF SEASIDE SEASIDE 0-5 $10,000+ $1M-$10M none Medium no no na CM-07 41 CU 072 Capture and Use CITY OF SEASIDE SEASIDE 0-5 $10,000+ $1M-$10M none Medium no no na CM-07 41 CU_074 Capture and Use MONTEREY PENINSULA REGIONAL PARK DISTRICT SEASIDE 0-5 $10,000+ $100k-$1M none Higher no no na CM-07 41 DSS_05 Diversion to Sanitary Sewer Pump Station (adjacent to Laguna Grande) SEASIDE 0-5 $2,000-$5,000 <$100k none Higher no no M1W na na DSS_06 Del Monte Blvd Storm Drain
Diversion Diversion to Sanitary Sewer MONTEREY ONE WATER Seaside Pump Station #23 SEASIDE 20-100 $2,000-$5,000 $1M-$10M none Higher no no M1W na na INF 001 Infiltration to a Water Supply Aquifer CITY OF SEASIDE THE SEASIDE 10-20 $5,000-$10,000 $1M-$10M none Medium no yes na CM-02 1 INF_002 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-04 6 INF_003 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SEASIDE 20-100 $5,000-$10,000 $1M-$10M none Medium no yes na CM-04 6 INF_004 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer CHARTWELL SCHOOL SEASIDE 10-20 $5,000-$10,000 $1M-$10M none Medium no yes na CM-04 6 INF_005 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer CHARTWELL SCHOOL SEASIDE 5-10 $5,000-$10,000 $1M-$10M none Medium no yes na CM-04 6 INF_006 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $10,000+ <$100k none Medium no yes na CM-04 6 INF_007 Former Fort Ord Stormwater Outfall
Closure Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $10,000+ <$100k none Medium no yes na CM-04 6 INF 008 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $100k-$1M none Medium no yes na CM-05 11 INF_009 Seaside High School Bioretention
Project Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SCHLDISTRICT SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-05 11 INF_010 Seaside High School Bioretention
Project Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SCHOOL SEASIDE 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-05 11 INF 011 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-05 11 INF 012 Infiltration to a Water Supply Aquifer SUNBAY RESORT ASSOCIATES NO 2 LLC SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-05 11 INF 014 Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-05 11 INF 015 Infiltration to a Water Supply Aquifer MONTEREY PENINSULA UNIFIED SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-05 11 INF 016 Infiltration to a Water Supply Aquifer BBI BUILDING LLC SEASIDE 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-06 69 INF 017 Infiltration to a Water Supply Aquifer CITY OF SEASIDE THE SEASIDE 0-5 $10,000+ <$100k none Medium no yes na CM-05 11 INF 018 Infiltration to a Water Supply Aquifer ORD TERRACE SCHOOL SEASIDE 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-05 11 INF 019 Infiltration to a Water Supply Aquifer MAHROOM FAMILY PARTNERSHIP LP SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 020 Infiltration to a Water Supply Aquifer ISHII GALEN H TR ET AL SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 021 Infiltration to a Water Supply Aquifer ISHII GALEN H TR ET AL SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 022 Infiltration to a Water Supply Aquifer SEASIDE SCHOOL DIST SEASIDE 20-100 $800-$2,000 $1M-$10M none Medium no yes na CM-06 69 INF 023 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 025 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 026 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 027 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 028 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 029 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 030 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 031 Infiltration to a Water Supply Aquifer THE CITY OF SEASIDE SEASIDE 0-5 $10,000+ <$100k none Medium no yes na CM-06 69 INF 032 Infiltration to a Water Supply Aquifer BASSETT LINDA LEE TR SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 033 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 034 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 035 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF_038 Infiltration to a Water Supply Aquifer CALIFORNIA GOLD DEVELOPMENT CORPORATION SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 039 Infiltration to a Water Supply Aquifer MADISON TRUST COMPANY CUSTODIAN SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 040 Infiltration to a Water Supply Aquifer MC ADAMS MICHAEL GENE II SEASIDE 0-5 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 041 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 042 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 043 Infiltration to a Water Supply Aquifer CROCKETT SHERYL TURRENTINE ET AL SEASIDE 10-20 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 044 Infiltration to a Water Supply Aquifer CROCKETT SHERYL TURRENTINE ET AL SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF_045 Infiltration to a Water Supply Aquifer VALDEZ JOSE ROSARIO & NAZARIO P VALDEZ SEASIDE 0-5 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 INF 046 Infiltration to a Water Supply Aquifer BAKER ELIZABETH W & MICHAEL O SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 047 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 048 Infiltration to a Water Supply Aquifer MONTECRISTO CAPITAL INC SEASIDE 10-20 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 049 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 050 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 051 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 052 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 053 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 054 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 055 Infiltration to a Water Supply Aquifer COUNTY OF MONTEREY SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 056 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 057 Infiltration to a Water Supply Aquifer HAGENBUCH RICKY C SEASIDE 0-5 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 058 Infiltration to a Water Supply Aquifer HAGENBUCH RICKY C SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 059 Infiltration to a Water Supply Aquifer HAGENBUCH RICKY C SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 060 Infiltration to a Water Supply Aquifer VEGA NELSON ALVELO TR SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 061 Infiltration to a Water Supply Aquifer BICKEL WILLIAM TR SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 062 Infiltration to a Water Supply Aquifer HINDS BROTHERS CALIFORNIA LLC SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 063 Infiltration to a Water Supply Aquifer HINDS BROTHERS CALIFORNIA LLC SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 064 Infiltration to a Water Supply Aquifer ABRAMONTE MADELINE L ET AL SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 065 Infiltration to a Water Supply Aquifer FLORES PAUL H & LINDA S TRS ET AL SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 066 Infiltration to a Water Supply Aquifer CORONA KATHERINE D TR ET AL SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 067 Infiltration to a Water Supply Aquifer CORONA RAYMOND K SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-06 69 INF 068 Infiltration to a Water Supply Aquifer RAY GERALD C TR SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 069 Infiltration to a Water Supply Aquifer SEASIDE SCHOOL DIST SEASIDE 20-100 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 070 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 071 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 072 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 073 Infiltration to a Water Supply Aquifer NEW HOPE BAPTIST CHURCH OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-07 41 INF 074 Infiltration to a Water Supply Aquifer AILING HOUSE PEST CONTROL SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 Monterey Peninsula Water Recovery Study Report 2 of 4 April 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 730, Packet Page 830 Appendix C Water Recovery Study Feasibility Matrix

1. WATER
SUPPLY

3. EASE OF IMPLEMENTATION
Unit Project Cost
($/AF)8
Financial -
Total Capital Cost
($)9
Portion Diverted to
Sanitary Sewer as Wet
Weather Runoff
(none, some, most)10
Complexity of Location due
to Permitting and Land
Acquisition
(lower, medium, higher)11
Potential Water
Quality
Constraints
(yes, no)12
Water Loss Considerations
Associated with
Hydrogeology
(yes, no)13
Project Coordination
INF_075 Infiltration to a Water Supply Aquifer AUBURNS HOUSE MONTESSORI SCHOOL LLC SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 INF 076 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $800-$2,000 $1M-$10M none Medium no yes na CM-07 41 INF 077 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $10,000+ <$100k none Medium no yes na CM-07 41 INF 078 Infiltration to a Water Supply Aquifer CENTRAL CALIFORNIA CONF ASSOC SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 079 Infiltration to a Water Supply Aquifer ABRAMONTE MADELINE L TR SEASIDE 0-5 $10,000+ $100k-$1M none Medium no yes na CM-07 41 INF 080 Infiltration to a Water Supply Aquifer 1533 KIMBALL AVE LLC SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-07 41 INF 081 Infiltration to a Water Supply Aquifer GUNIA DOLORES TR SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 INF 082 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-07 41 INF 083 Infiltration to a Water Supply Aquifer CITY OF SEASIDE CITY HALL SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-07 41 INF 084 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-07 41 INF 085 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $5,000-$10,000 $100k-$1M none Medium no yes na CM-07 41 INF 086 Infiltration to a Water Supply Aquifer MONTEREY CITY SCHOOL DIST SEASIDE 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na CM-06 69 INF 087 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 088 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 089 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 0-5 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF 090 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 091 Infiltration to a Water Supply Aquifer MONTEREY CITY SCHOOL DIST SEASIDE 20-100 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 092 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $800-$2,000 $100k-$1M none Medium no yes na CM-06 69 INF 093 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 094 Infiltration to a Water Supply Aquifer MONTEREY CITY SCHOOL DISTRICT SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 095 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 096 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 097 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Medium no yes na CM-06 69 INF 098 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na CM-06 69 INF_DW_SEA Infiltration to a Water Supply Aquifer na Dry Well Catch Basin Retrofit Program - Seaside Aquifer SEASIDE 20-100 $5,000-$10,000 $10M+ none Higher no yes na na na INF_planned_19 Del Monte Manor Park Infiltration Infiltration to a Water Supply Aquifer DEL MONTE MANOR INC SEASIDE 10-20 $2,000-$5,000 $1M-$10M none Lower no yes na CM-06 69 CU 075 Capture and Use ROBERT LOUIS STEVENSON SCHOOL UNINCORPORATED 0-5 $10,000+ $1M-$10M none Higher no no na CM-41 2 CU 079 Capture and Use CARMEL UNIFIED SCHOOL DISTRICT UNINCORPORATED 20-100 $10,000+ $10M+ none Medium no no na Carmel River 36 CU_080 Capture and Use THE TRUST FOR PUBLIC LAND Rancho Canada Golf Club UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M none Lower no no na Carmel River 36 CU_081 Capture and Use WEINMAN LOIS TR Quail Lodge Resort and Golf Club UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M none Lower no no na Carmel River 36 CU_082 Capture and Use HARDING PETER MARTIN & MARGARET
LOUIS TRS UNINCORPORATED 0-5 $10,000+ $1M-$10M none Medium no no na Carmel River 36 CU 083 Capture and Use CARMEL UNIFIED SCHOOL DIST UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no no na Carmel River 36 CU_planned_01 Pebble Beach Drainage Storm Drain
Retrofit Capture and Use GOVT LAND UNINCORPORATED 0-5 $10,000+ $1M-$10M none Higher no no na CM-37 1 DSS_07 Former Fort Ord Stormwater Outfall
Closure Diversion to Sanitary Sewer MONTEREY ONE WATER Fort Ord Treatment Plant Pump Station UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M none Higher no no M1W na na INF 111 Infiltration to a Water Supply Aquifer NORTH SHORE TOWER COMPANY LLC UNINCORPORATED 0-5 $10,000+ <$100k none Medium no yes na Carmel River 36 INF 112 Infiltration to a Water Supply Aquifer NORTH SHORE TOWER COMPANY LLC UNINCORPORATED 0-5 $10,000+ <$100k none Medium no yes na Carmel River 36 INF 113 Infiltration to a Water Supply Aquifer SYCAMORE STABLES LLC UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no yes na Carmel River 36 INF 114 Infiltration to a Water Supply Aquifer MAINO PATRICIA TR UNINCORPORATED 10-20 $10,000+ $1M-$10M none Medium no yes na Carmel River 36 INF 115 Infiltration to a Water Supply Aquifer KAMINSKE ROY TR ET AL UNINCORPORATED 5-10 $5,000-$10,000 $1M-$10M none Medium no yes na Carmel River 36 INF_116 Infiltration to a Water Supply Aquifer TAVAKOLIAN MOJTABA & MOHAMADPOURJASEM NASSIME UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 117 Infiltration to a Water Supply Aquifer PICARD JOHN R & RUTH F TRS UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 118 Infiltration to a Water Supply Aquifer MANNING MARGARET ANN TR UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 119 Infiltration to a Water Supply Aquifer MANNING MARGARET ANN TR UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 120 Infiltration to a Water Supply Aquifer MANNING MARGARET ANN TR UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 121 Infiltration to a Water Supply Aquifer MANNING MARGARET ANN TR UNINCORPORATED 5-10 $2,000-$5,000 $100k-$1M none Medium no yes na Carmel River 36 INF 122 Infiltration to a Water Supply Aquifer ONE LANTERN LLC UNINCORPORATED 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na Carmel River 36 INF 123 Infiltration to a Water Supply Aquifer CARMEL UNIFIED SCHOOL DIST UNINCORPORATED 5-10 $5,000-$10,000 $1M-$10M none Medium no yes na Carmel River 36 INF 124 Infiltration to a Water Supply Aquifer CANADA WOODS LLC UNINCORPORATED 10-20 $5,000-$10,000 $1M-$10M none Medium no yes na Carmel River 36 INF 125 Infiltration to a Water Supply Aquifer CANADA WOODS LLC UNINCORPORATED 5-10 $5,000-$10,000 $1M-$10M none Medium no yes na Carmel River 36 INF 126 Infiltration to a Water Supply Aquifer WOLTER PROPERTIES LP UNINCORPORATED 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na Carmel River 36 INF 127 Infiltration to a Water Supply Aquifer WOLTER PROPERTIES LP UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no yes na Carmel River 36 INF 128 Infiltration to a Water Supply Aquifer WOLTER PROPERTIES LP UNINCORPORATED 0-5 $5,000-$10,000 $100k-$1M none Medium no yes na Carmel River 36 INF 129 Infiltration to a Water Supply Aquifer WOLTER PROPERTIES LP UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no yes na Carmel River 36 INF 130 Infiltration to a Water Supply Aquifer CANADA WOODS LLC UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no yes na Carmel River 36 INF 131 Infiltration to a Water Supply Aquifer ALGM LLC UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium no yes na Carmel River 36 INF_DW_CV Infiltration to a Water Supply Aquifer na Dry Well Catch Basin Retrofit Program - Carmel Valley Aquifer UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M none Higher no yes na na na INF_planned_17
Carmel River Floodplain Restoration
and Environmental Enhancement
(CRFREE)
Infiltration to a Water Supply Aquifer BIG SUR LAND TRUST THE UNINCORPORATED 10-20 $10,000+ $10M+ none Higher yes yes na Carmel River 36 INF_planned_71 Whalers Cove Parking Lot Stormwater
BMP Project Infiltration to a Water Supply Aquifer STATE OF CALIFORNIA UNINCORPORATED 0-5 $10,000+ $100k-$1M none Higher no yes na BP-2 1 INF_TRIB_1 Infiltration to a Water Supply Aquifer THE TRUST FOR PUBLIC LAND UNINCORPORATED 10-20 $5,000-$10,000 $1M-$10M none Medium yes yes na Carmel River 36 INF_TRIB_2 Infiltration to a Water Supply Aquifer ONE LANTERN LLC, WRIGHT RONALD DOUGLAS UNINCORPORATED 0-5 $10,000+ $100k-$1M none Medium yes yes na Carmel River 36 INF TRIB 3 Infiltration to a Water Supply Aquifer LUTES LEO GORDON & KATHLEEN UNINCORPORATED 10-20 $5,000-$10,000 $1M-$10M none Medium yes yes na Carmel River 36 INF_TRIB_4 Infiltration to a Water Supply Aquifer

KAMINSKE ROY TR ET AL, TAVAKOLIAN

MOJTABA & MOHAMADPOUR-JASEM

NASSIME
UNINCORPORATED 5-10 $5,000-$10,000 $1M-$10M none Medium yes yes na Carmel River 36 INF_TRIB_5 Infiltration to a Water Supply Aquifer CANADA WOODS LLC, WOLTER PROPERTIES LP, ALGM LLC UNINCORPORATED 20-100 $5,000-$10,000 $10M+ none Medium yes yes na Carmel River 36 INF_TRIB_6 Infiltration to a Water Supply Aquifer MAINO PATRICIA TR, MOODY MICHAEL M TR UNINCORPORATED 5-10 $5,000-$10,000 $1M-$10M none Medium yes yes na Carmel River 36 LR 01 Lakes / Reservoirs na County and Private Pond UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M Most Higher no no M1W CM-07 41 LR 06 Lakes / Reservoirs na Laguna Seca UNINCORPORATED 20-100 <$800 $100k-$1M none Higher no yes na CM-07 41 LR 07 Lakes / Reservoirs na Laguna Seca Golf Ranch UNINCORPORATED 20-100 <$800 <$100k none Higher no no na CM-07 41 LR 10 Lakes / Reservoirs na Nicklaus Club - Monterey UNINCORPORATED 5-10 <$800 <$100k none Higher no no na CM-07 41 LR 13 Lakes / Reservoirs na Santa Lucia Conservancy UNINCORPORATED 10-20 <$800 <$100k none Higher no no na Carmel River 36 LR 14 Lakes / Reservoirs na Los Padres Reservoir UNINCORPORATED 100+ $10,000+ $10M+ none Higher no no na Carmel River 36 Notes:
7 The estimated amount of annual runoff that could potentially be recovered at the project site to augment water supply, provided as range (acre-feet per year). Ranges provided include 0 - 5 ac-ft/yr; 5 - 10 ac-ft/yr; 10 - 20 ac-ft/yr; 20 - 100 ac-ft/yr; and 100+ ac-ft/yr. Estimated Net Recovery Volume was calculated assuming there are no other Water Recovery Study projects implemented in the area tributary to the project.

Lake / Reservoir - includes potential projects where existing surface water impoundments with substantial tributary area can detain and recover additional runoff via infiltration to a water supply aquifer, capture and use, and/or diversion to the sanitary sewer system.

Diversion to Sanitary Sewer - includes potential projects where storm drains or streams can be retrofitted to divert runoff into the sanitary sewer system for treatment and reuse. 4 Parcel owner name, as received from the Monterey County Assessor's Office on November 17, 2017. 5 Name of the project -- applies only to Lake / Reservoir, Diversion to Sanitary Sewer projects, and golf courses. 6 Jurisdiction within which project is located (i.e., all projects physically located within the City of Seaside have a "SEASIDE" jurisdiction designation). 1 Unique index key for Water Recovery Study and Stormwater Resource Plan projects using project category as prefix - Capture and Use (CU), Infiltration to a Water Supply Aquifer (INF), Diversion to Sanitary Sewer (DSS), and Lakes and Reservoirs (LR). Used for database management when referring to a specific Water Recovery Study and Stormwater Resouce Plan project. 3 Project Category
Capture and Use - includes potential projects that collect and store runoff for irrigation demand onsite.

Infiltration to Water Supply Aquifer - includes opportunities to capture and percolate runoff into groundwater basins used for water supply. 2 Named stakeholder project is a part of the project opportunity identified.

Monterey Peninsula Water Recovery Study Report 3 of 4 April 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 731, Packet Page 831 Appendix C Water Recovery Study Feasibility Matrix

1. WATER
SUPPLY

Monterey Peninsula Water Recovery Study Report 4 of 4 April 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 732, Packet Page 832 Monterey Peninsula Water Recovery Study Report

APPENDIX D
List of Public Parcel Owners Screened for
Potential City Hall Buildings and Schools
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 733, Packet Page 833 Appendix D List of Public Parcel Owners Screened for Potential City Hall Buildings and Schools Land Use Code Owner

CALIFORNIA STATE UNIVERSITY MONTEREY BAY

CALIVORNIA STATE UNIVERSITY MONTEREY BAY

CARMEL BY THE SEA PUBLIC

CARMEL SCHOOL DIST

CARMEL UNIFIED SCHOOL DIST

CARMEL UNIFIED SCHOOL DISTRICT

CARMEL UNIFIED SCOOL DISTRICT

CARMELO SCHOOL DISTRICT

CITY OF CARMEL

CITY OF CARMEL BY THE SEA

CITY OF CARMEL-BY-THE-SEA

CITY OF DEL REY OAKS

CITY OF DEL REY OAKS CITY HALL

CITY OF DEL REY OAKS THE

CITY OF MARINA

CITY OF MONTEREY

CITY OF MONTEREY THE

CITY OF PACIFIC GROVE

CITY OF SAND

CITY OF SAND CITY

CITY OF SEASIDE

CITY OF SEASIDE CITY HALL

CITY OF SEASIDE THE

COUNTY OF MONTEREY

COUNTY OF MONTEREY THE
CSUMB

MARINA CITY OF

MONTEREY CITY SCHOOL DIST

MONTEREY CITY SCHOOL DISTRICT

MONTEREY COUNTY

MONTEREY PEN UNIFIED SCH DIST

MONTEREY PENINSUAL UNIFIED SCHOOL DISTRICT

MONTEREY PENINSULA COMMUNITY COLLEGE DISTRICT

MONTEREY PENINSULA UNIFIED

MONTEREY PENINSULA UNIFIED SCHLDISTRICT

MONTEREY PENINSULA UNIFIED SCHOOL

MONTEREY PENINSULA UNIFIED SCHOOL DIST

MONTEREY SCHOOL DIST

MONTEREY UNION HIGH SCHOOL

MTY CITY SCHOOL DIST & MTY

MTY PENINSULA JR COLLEGE DIST

ORD TERRACE SCHOOL

PACIFIC GROVE HIGH SCHOOL DIST

PACIFIC GROVE SCHOOL DIST

PACIFIC GROVE UNIFIED SCHOOL

PACIFIC GROVE UNIFIED SCHOOL DISTRICT

SAND CITY CITY HALL

SEASIDE SCHOOL DIST

THE CITY OF MONTEREY

THE CITY OF SAND CITY

THE CITY OF SEASIDE

TRUSTEES OF THE CALIFORNIA STATE UNIVERSITY

U S NAVY GENERAL LINE SCHOOL

CITY OF CARMEL-BY-THE-SEA

CITY OF MONTEREY

CITY OF MONTEREY & COUNTY OF MONTEREY

CITY OF SEASIDE
7B
7A
Monterey Peninsula Water Recovery Study Report April 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 734, Packet Page 834 Monterey Peninsula Water Recovery Study Report

APPENDIX E
Suggested Shortlist of Water Recovery Projects
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 735, Packet Page 835 Appendix E Shortlist of Potential Water Recovery Projects Appendix E: Suggested shortlist of 26 projects which have the highest estimated net recovered water volume (>20 AFY) and lowest unit project cost (<$5,000/AF).

WRS Project ID Includes Stakeholder Project Project Category Owner Project Name Jurisdiction Net Recovered Water Volume (AFY)
Unit Project Cost
($/AF)
Financial -
Total Capital Cost ($)
LR_03
Lake Del Monte Outflow Diversion; Lake Del
Monte Outfall Replacement; Del Monte Lake
Storm Water Diversion
Lake / Reservoir na Lake Del Monte MONTEREY 100+ <$800 $100k-$1M LR_04
Lake El Estero/Whasherwomen's Pond Storm
Water Diversion; Pearl Street/Figurao Box
Culvert Diversion; Navy Lake and
Washerwomen's Pond Outlet
Lake / Reservoir na Lake El Estero MONTEREY 100+ <$800 $100k-$1M LR_12 Laguna Grande Well Upgrades; Laguna
Grande Water Recovery Lake / Reservoir na Roberts Lakes / Laguna Grande MONTEREY 100+ <$800 $100k-$1M DSS_planned_60
Pacific Grove-Monterey ASBS Wet-Dry
Weaterth Storm Water Capture and Diversion
Project
Diversion to Sanitary Sewer na Pump Station #11 MONTEREY 100+ $800-$2,000 $1M-$10M DSS_04 City of Monterey Tunnel & Calle Principal
Storm Water Diversion Diversion to Sanitary Sewer MONTEREY ONE WATER Monterey Pump Station MONTEREY 100+ $2,000-$5,000 $1M-$10M LR_06 Lake / Reservoir na Laguna Seca UNINCORPORATED 20-100 <$800 $100k-$1M LR_07 Lake / Reservoir na Laguna Seca Golf Ranch UNINCORPORATED 20-100 <$800 <$100k LR_08 Lake / Reservoir na Monterey Peninsula Regional DEL REY OAKS 20-100 <$800 $100k-$1M LR_planned_79 New Detention Behind Safeway Lake / Reservoir CITY OF DEL REY OAKS DEL REY OAKS 20-100 <$800 $100k-$1M CU_054 Capture and Use CITY OF SEASIDE SEASIDE 20-100 $800-$2,000 $1M-$10M DSS_08
4th Avenue Dry Weather Diversion Pilot;
South Carmel Dry Weather Diversion; Scenic
Road Dry-Weather Diversion
Diversion to Sanitary Sewer na Scenic & 8th Pump Station CARMEL BY-THE-SEA 20-100 $2,000-$5,000 $1M-$10M DSS_planned_51 Hartnell Gulch Creek Restoration and Storm Water Diversion Diversion to Sanitary Sewer CITY OF MONTEREY MONTEREY 20-100 $800-$2,000 $1M-$10M INF_022 Infiltration to a Water Supply Aquifer SEASIDE SCHOOL DIST SEASIDE 20-100 $800-$2,000 $1M-$10M INF_076 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $800-$2,000 $1M-$10M CU_044 Capture and Use PEBBLE BEACH COMPANY Del Monte Golf Course MONTEREY 20-100 $2,000-$5,000 $1M-$10M CU_080 Capture and Use THE TRUST FOR PUBLIC LAND Rancho Canada Golf Club UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M CU_081 Capture and Use WEINMAN LOIS TR Quail Lodge Resort and Golf Club UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M CU_085 Capture and Use U S A Monterey Pines Golf Club MONTEREY 20-100 $2,000-$5,000 $1M-$10M DSS_06 Del Monte Blvd Storm Drain Diversion Diversion to Sanitary Sewer MONTEREY ONE WATER Seaside Pump Station #23 SEASIDE 20-100 $2,000-$5,000 $1M-$10M DSS_07 Diversion to Sanitary Sewer MONTEREY ONE WATER UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M INF_023 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $2,000-$5,000 $1M-$10M INF_030 Infiltration to a Water Supply Aquifer CITY OF SEASIDE SEASIDE 20-100 $2,000-$5,000 $1M-$10M INF_069 Infiltration to a Water Supply Aquifer SEASIDE SCHOOL DIST SEASIDE 20-100 $2,000-$5,000 $1M-$10M INF_091 Infiltration to a Water Supply Aquifer MONTEREY CITY SCHOOL DIST SEASIDE 20-100 $2,000-$5,000 $1M-$10M INF_DW_CV Infiltration to a Water Supply Aquifer na Dry Well Catch Basin Retrofit Program - Carmel Valley Aquifer UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M LR_01 Lake / Reservoir na County and Private Pond UNINCORPORATED 20-100 $2,000-$5,000 $1M-$10M Net Recovered Water Volume 100+ AFY
Net Recovered Water Volume 20-100 AFY
Monterey Peninsula Water Recovery Study Report April 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 736, Packet Page 836

APPENDIX E
Project Database
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 737, Packet Page 837 APPENDIX E: PROJECT DATABASE
This Appendix includes the Monterey Peninsula SWRP Project Database as a separate Excel file titled, “Appendix E_MontereyPeninsulaSWRP ProjectDatabase (07-22-19).xlsx.” The project request sent to cooperating entities, interested parties, and stakeholders to identify planned projects in the region is provided on the next page. ****
Appendix E: Project Database
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 738, Packet Page 838 E-1
Attachment 1: Planned Project Request
28 November 2017
Geosyntec Consultants
Optional: Notes
Project Name Project Jurisdiction or Proponents Project Location (APN or list of APNs separated by commas; or indicate if provided in GIS file, with file name) Facility Type (Select) Facility Type (write in if "other" selected) Drainage Area (acres) Drainage Area (as list of APNs, separated by commas) Drainage Area in GIS Shapefile (T/F) Drainage Area GIS Shapefile name Imperviousness of Drainage Area (as %) Project Description Planning Stage (select) Anticipated Completion Date (mm/yy) Project Scale (select) Facility Infiltration Information Underlying Soil Type (select) Facility Sizing Criteria (select) Facility Sizing Criteria (description) Facility Volume (acft) Water Quality Water Supply Flood Management Environmental Community Other Comments/ Notes? Optional: Facility Benefits (indicate "true" for all that apply) Required for Regional Projects: Facility Drainage Area Information ‐ estimate area in acres, as list of APN values, or indicate that a GIS shapefile has been provided Required: General Facility Information Optional: Additional Project Information Optional: Facility Sizing Information (If known) Appendix E: Project Database
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 739, Packet Page 839 E-2

APPENDIX F
Project Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 740, Packet Page 840 APPENDIX F: PROJECT CONCEPT DESIGNS
This appendix presents proposed project concept designs for six of the seven project opportunities selected for concept design. Projects were selected as summarized in SWRP section 6.3. All seven selected projects are summarized in Table F-1. The page number of this appendix corresponding to each concept design is also provided.

Table F-1: Monterey Peninsula Stormwater Resource Plan Project Concepts Permittee Project Name Project Type
Page
Number
Monterey 1. Hartnell Gulch Restoration and
Runoff Diversion
Stream restoration and diversion to
the sanitary sewer App. G
Monterey 2. Lake El Estero Diversion to
Sanitary Sewer
Lake capture and diversion to the
sanitary sewer F-3
Monterey 3. Monterey Tunnel Stormwater
Diversion
Diversion from the storm drain
network to the sanitary sewer F-10
Carmel-bythe-Sea4. Carmel-by-the-Sea Stormwater
Diversion
Diversion from surface ditches and
the storm drain network to the
sanitary sewer
F-14
Pacific Grove
and Monterey

5. Pacific Grove Monterey ASBS
Watershed – David Avenue
Stormwater Storage and
Diversion
Stormwater capture and storage
under a new community park and
diversion to the sanitary sewer
F-20
Seaside 6. Del Monte Manor Park
Infiltration
Bioswale and a bioretention facility
in a housing complex park F-28
Seaside (with
regional
partners)

7. Dry Well Aquifer Recharge
Program
Distributed dry well program to
infiltrate runoff from residential
neighborhoods to water supply
aquifers in the Seaside
Groundwater Basin
F-40
The proposed project concept for project 1, Hartnell Gulch Restoration and Runoff Diversion is provided in Appendix G. Concept designs for projects 2 through 7 are provided in this appendix.

An overview map of the proposed project locations and the drainage areas is provided as Figure

1. A description of the development of the concept project designs, including sizing information and quantification of project benefits, is provided in Section 6.4 of the Monterey Peninsula SWRP.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 741, Packet Page 841 F-1
CARMEL

BY-THE-SEA

DEL REY OAKS

MONTEREY

PACIFIC GROVE

SAND CITY

SEASIDE
P:\GIS\Monterey Trash\Project\Trash Figures\WW2285\City of Monterey 2018\Overview of All Projects 091918.mxd 9/19/2018 10:47:40 PM Proposed Project Locations

1. Hartnell Gulch Restoration and Runoff Diversion

2. Lake El Estero Diversion to Santiary Sewer

3. Monterey Tunnel Stormwater Diversion

4. Carmel-by-the-Sea Stormwater Diversion

5. David Avenue Stormwater Storage and Diversion

6. Del Monte Manor Park Infiltration

7. Drywell Infiltration Program
Proposed Project Drainage Area

1. Hartnell Gulch Restoration and Runoff Diversion

2. Lake El Estero Diversion to Sanitary Sewer

3. Monterey Tunnel Stormwater Diversion

4. Carmel-by-the-Sea Stormwater Diversion

5. David Avenue Stormwater Storage and Diversion

6. Del Monte Manor Park Infiltration

7. Drywell Infiltration Program
"/ Pump Station
!@ Carmel Area Wasterwater Treatment Facility
M1W Interceptor Pipeline - Gravity
M1W Interceptor Pipeline - Pressurized
City Limits
0 1
Miles
³ Monterey Peninsula Stormwater Resource Plan
Monterey Peninsula SWRP
Concept Project Locations
Overview Map
Figure
1 Oakland, CA September 2018

5. David Avenue Stormwater
Storage and Diversion

1. Hartnell Gulch Restoration
and Runoff Diversion

3. Monterey Tunnel
Stormwater Diversion

2. Lake El Estero Diversion
to Sanitary Sewer

7. Drywell Infiltration
Program

6. Del Monte Manor
Park Infiltration

4. Carmel-by-the-Sea
Stormwater Diversion
To M1W Regional
Treatment Plant
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 742, Packet Page 842

2. LAKE EL ESTERO DIVERSION TO SANITARY SEWER

SITE DESCRIPTION
Jurisdiction: City of Monterey
Location: Northern boundary of Lake El Estero, near the intersection of Del Monte Ave and Camino Aguajito
Land Owner: City of Monterey
Catchment1: CM-10 and CM-11

PROJECT CONCEPT
The proposed Lake El Estero Diversion Project in the City of Monterey consists of two components: reconnection of a box culvert at Pearl and Figueroa Street (west of the lake) to divert runoff from Hartnell Gulch watershed to Lake El Estero; and diversion of lake water on the north side of Lake El Estero to sanitary sewer. The combined drainage area (i.e., Hartnell Gulch watershed and Lake El Estero watershed), located in the City of Monterey, is shown on Figure 2A.

The Lake El Estero watershed (2,418 acres) includes residential, commercial, institutional, and undeveloped areas tributary to Lake El Estero (CM-10) and the Hartnell Gulch watershed (1,186 acres) includes residential and undeveloped areas tributary to Hartnell Gulch (CM-11). Drainage in the Hartnell Gulch watershed flows northeastward toward the City center and borders the western edge of the Lake El Estero watershed along Munras Avenue, which becomes Abrego Street to the north. The Lake El Estero watershed flows northward toward the lake. One of the three primary creek channels in the Lake El Estero watershed flows into Laguna Mirada and the other two primary creek channels flow into Washerwoman’s Pond. Laguna Mirada and Washerwoman’s Pond flow into Lake El Estero through the City of Monterey’s underground storm drain network. Currently, a pump station at the north end of Lake El Estero conveys high flows to Monterey Bay so that the lake does not overtop during the wet season.

The locations of the proposed box culvert connection to divert Hartnell Gulch drainage to the lake and the lake sanitary sewer diversion are shown on Figure 2B. The Project would utilize the existing storage capacity of Lake El Estero to detain both wet and dry weather runoff for diversion when demand for recycled water is greatest. Stored lake water would be diverted to the sanitary sewer from April to October for recycling at the Monterey One Water Regional Treatment Plant (RTP) to augment water supply. A pump is proposed to be installed within the existing pump house on the north side of Lake El Estero to pump lake water to a sanitary sewer manhole, located between Del Monte Avenue and Lake El Estero, which connects to the 21-inch diameter gravity sewer main on Del Monte Ave.
1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 743, Packet Page 843 F-3
The greatest water supply benefit using current infrastructure at the RTP is to treat and recycle runoff from the Project drainage area during the dry season, April to October2, adding to the current lake water recovery mechanisms. Water is currently recovered from Lake El Estero via capture and use because park space and a cemetery surrounding the lake are irrigated with the lake water.

If stormwater runoff could be recovered during the wet season, with prior authorization of M1W, then approximately three times the volume of runoff could potentially be recovered through this project. The proposed pump could be designed to accommodate either dry season or wet and dry season pumping. Payment of an adopted interruptible rate would apply.

Additional information for the Lake El Estero pump configuration, an aerial image, and pump house detail are provided as Figure 2C and 2D.

Proposed project is conceptual and subject to change based on future feasibility assessment, funding availability, and/or other information.

DESIGN INFORMATION
Tributary Drainage Area (TDA): 3,671 acres
TDA Imperviousness: 13.6%
TDA Urbanized Area: 2,384 acres
Average Annual Wet Weather Runoff: 500 to 670 acre-feet Available Live Storage in Lake: 61 acre-feet
Dry Weather Seepage Runoff: 49 acre-feet (April to October) Dry Weather Nuisance Runoff: 53 to 76 acre-feet (April to October) Existing Annual Irrigation Use of Lake Water: 39 acre-feet Sanitary Sewer Diversion Pump Rate: 2,400 gallons per minute

PROJECT BENEFITS
Net Water Volume Recovered: 110 to 140 acre-feet/year
Water Quality Benefits:

Treatment of pollutants in diverted urban stormwater and dry weather flows that currently discharge to Monterey Bay.

Flood Management Benefits: None anticipated.

Natural Drainage System Benefits:

Removal of urban stormwater and dry weather flows that currently discharge to Monterey Bay, thereby partially restoring natural drainage patterns.

Habitat or Open Space Benefits: Diversion to the sanitary sewer is anticipated to reduce overflow volumes from the Lake to the beach.

Community Benefits: Drainage area within the Hartnell Gulch watershed contains a Disadvantaged Community (DAC).
2 It is less desirable to divert during the wet season with the current infrastructure in place because there are other ample stormwater sources being included into the Pure Water Monterey project.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 744, Packet Page 844 F-4

COST ESTIMATE
Cost estimate is based on the estimated cost of construction for the Lake El Estero Diversion Structure - Pump Option (MRWPCA, 2017)3and adjusted to provide costs in 2018 dollars.

DESCRIPTION COST
Capital Cost $320,000
Annual Operations and Maintenance Cost4 $67,000 per year Estimated Life Cycle Annual Cost5 $85,000 per year
Unit Project Cost of Recovered Water $620 to $750 per acre-foot 3 Monterey Regional Water Pollution Control Agency (MRWPCA). 2017. Pure Water Monterey Groundwater Replenishment Project Consolidated Final Environmental Impact Report. State Clearinghouse No. 2013051094.

Addendum No. 3. October 24.
4 Includes sewer connection fees at the Regional Treatment Plan for the dry season, only. 5 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 745, Packet Page 845 F-5
Laguna Mirada
Washerwoman's Pond
Monterey
Pump Station
Proposed Diversion to Sanitary Sewer
Pearl & Figueroa Box Culvert
Hartnell Creek
Iris Canyon Creek
P:\GIS\MRWPCA\Project\Concept Projects\2. Lake El Estero\El Estero_Final.mxd 8/29/2018 10:18:15 AM Legend
El Estero Project Drainage Area
Project Map Extent
Stream
Existing Infrastructure
M1W Interceptor Pipeline - Pressurized
M1W Interceptor Pipeline - Gravity
Storm Drain
"/ Pump Station 0 4,000
Feet
³ Monterey Peninsula Stormwater Resource Plan
Lake El Estero Diversion to Sanitary Sewer
Monterey, CA
Catchment Map
Oakland, CA September 2018
Figure
2A
Lake El Estero
Lake El Estero
Watershed
Hartnell Gulch
Watershed
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 746, Packet Page 846 !(
Del Monte Ave
Proposed Diversion to Sanitary Sewer
U
stormdrain to Monterey Bay
stormdrain to Lake El Estero
Figueroa St
Robinson St
Anthony St
Alma St
E Pearl St
Pearl & Figueroa Box Culvert
P:\GIS\MRWPCA\Project\Concept Projects\2. Lake El Estero\El Estero Zoom_Final.mxd 8/29/2018 10:20:04 AM Monterey Peninsula Stormwater Resource Plan
Lake El Estero Diversion to Sanitary Sewer
Monterey, CA
Project Map
Oakland, CA September 2018
Pearl & Figueroa
Box Culvert
Proposed Diversion to
Sanitary Sewer
Figure
2B 0 100
Feet
Legend
Existing Infrastructure
Storm Drain
Sanitary Sewer
M1W Interceptor Pipeline - Gravity
Proposed Infrastructure
U Diversion Structure
!( Pump
Discharge to Sanitary Sewer
Pump Station
³
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 747, Packet Page 847 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 2C
Lake El Estero Pump Option
(Source: Figure 3 from Appendix R of the Pure Water Monterey Groundwater Replenishment Project Consolidated EIR, 2016) Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 748, Packet Page 848 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 2D
Lake El Estero Pump House Detail
(Source: Figure 4 from Appendix R of the Pure Water Monterey Groundwater Replenishment Project Consolidated EIR, 2016) Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 749, Packet Page 849

3. MONTEREY TUNNEL STORMWATER DIVERSION PROJECT

SITE DESCRIPTION
Jurisdiction: City of Monterey
Location: Northernmost segment of Oliver Street south of Fisherman’s Wharf Land Owner: City of Monterey right-of-way
Catchment1: CM-13

PROJECT CONCEPT
The proposed Monterey Tunnel Stormwater Diversion Project is located at Oliver Street and Scott Street in the City of Monterey. The drainage catchment to this diversion location is shown on Figure 3A. The catchment includes residential and commercial areas bounded by the Presidio of Monterey to the north, Washington Street to the east, Madison Street and Pearl Street to the south, and Clay Street to the west. Runoff from the upgradient residential area in the western portion of the catchment primarily flows eastward toward Calle Principal and then flows northward toward Fisherman’s Wharf. Runoff from the commercial area in the eastern portion of the catchment primarily flows northward toward Fishman’s Wharf. Currently, the catchment discharges to Monterey Bay through two (“twin”) 51-inch diameters pipes north of Fisherman’s Wharf. The project location is on the northernmost segment of Oliver Street, adjacent to Fisherman’s Wharf.

The Monterey Tunnel project would involve diverting dry weather flows (April to October), including groundwater seepage (currently not quantified), to the sanitary sewer for recycling at the Monterey One Water Regional Treatment Plant to augment water supply. Dry weather flows from the catchment would be diverted from the 60-inch storm drain system on Oliver Street to the 24- inch sanitary sewer main behind the Custom House Museum, as shown on Figure 3B. A flow diversion structure will redirect dry weather flows via gravity from the storm drain to a proposed new pipe located in the right-of-way along Oliver Street. The proposed pipe would convey flows north and then east to connect with the sanitary sewer main, following the direction of Oliver Street. Because of the coastal location of this project, an assessment of the archeological, cultural, historical, and Native American resources would be completed in future phases of the project.

Proposed project is conceptual and subject to change based on future feasibility assessment, funding availability, and/or other information.
1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 750, Packet Page 850 F-10

DESIGN INFORMATION
Tributary Drainage Area (TDA): 152 acres
TDA Imperviousness: 69%
TDA Urbanized Area: 152 acres
Dry Weather Seepage Runoff: 6 acre-feet (April to October) Dry Weather Nuisance Runoff: 4 to 6 acre-feet (April to October) Length of Diversion Pipeline: 230 feet

PROJECT BENEFITS
Net Recovered Water Volume: 10 to 12 acre-feet per year (April to October) Water Quality Benefits Treatment of pollutants in dry weather flows that currently discharge to Monterey Bay.

Flood Management Benefits: None anticipated.

Natural Drainage System Benefits: Removal of dry weather flows that currently discharge to Monterey Bay, thereby partially restoring natural drainage patterns.

Habitat or Open Space Benefits: Diversion to the sanitary sewer will reduce dry season runoff from the 51-inch outflow pipes that discharge to the beach.

Community Benefits: Diversion to the sanitary sewer will reduce dry season runoff from the 51-inch outflow pipes that discharge to the beach.

COST ESTIMATE

DESCRIPTION COST
Capital Cost $190,000
Annual Operations and Maintenance Cost2 $8,000 per year Estimated Life Cycle Annual Cost3 $19,000 per year
Unit Project Cost of Recovered Water $1,600 to $1,900 per acre-foot 2 Includes sewer connection fees at the Regional Treatment Plan for the dry season, only. 3 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 751, Packet Page 851 F-11
U
P:\GIS\MRWPCA\Project\Concept Projects\3. Monterey Diversion\Monterey Tunnel_Final.mxd 8/29/2018 10:21:51 AM Legend
Monterey Tunnel Project Drainage Area
Project Map Extent
Existing Infrastructure
M1W Interceptor Pipeline - Pressurized
M1W Interceptor Pipeline - Gravity
Sanitary Sewer
Storm Drain
Proposed Control Measures
U Gravity Diversion Structure
0 800
Feet
³ Monterey Peninsula Stormwater Resource Plan
Monterey Tunnel Stormwater Diversion
Monterey, CA
Catchment Map
Figure
3A
Oakland, CA September 2018
Proposed Diversion to
Sanitary Sewer
"Twin 51" Outfall
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 752, Packet Page 852 U
Custom House Museum
Monterey Bay Coastal Trail
Lighthouse Ave
Artillery St
Oliver St
Pacific St
Oliver St
Fishermans Wharf
Pacific St
P:\GIS\MRWPCA\Project\Concept Projects\3. Monterey Diversion\Monterey Tunnel Zoom_Final.mxd 8/29/2018 10:23:22 AM Legend
Monterey Tunnel Project Drainage Area Existing Infrastructure M1W Interceptor Pipeline - Pressurized
M1W Interceptor Pipeline - Gravity
Sanitary Sewer
Storm Drain
Proposed Control Measures
U Gravity Diversion Structure
Diversion
0 150
Feet
³ Monterey Peninsula Stormwater Resource Plan
Monterey Tunnel Stormwater Diversion
Monterey, CA
Project Map
Oakland, CA September 2018
Figure
3B
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 753, Packet Page 853

4. CARMEL-BY-THE-SEA STORMWATER DIVERSION PROJECT

SITE DESCRIPTION
Jurisdiction: City of Carmel-by-the-Sea and Carmel Area Wastewater District Location: San Antonio Avenue from Second Avenue south to Santa Lucia Avenue
Land Owner: City of Carmel-by-the-Sea
Catchment1: CM-42
Numbers of Diversions to Sanitary Sewer: 12

PROJECT CONCEPT
The proposed Carmel-by-the-Sea Stormwater Diversion Project consists of runoff diversions from the existing storm drain located along San Antonio Avenue between Second Avenue south to Santa Lucia Avenue in Carmel-by-the-Sea. The proposed diversion locations and the tributary drainage area is shown on Figure 4A. The drainage area includes residential and commercial areas within the portion of Carmel-by-the-Sea that is bounded by Second Avenue, First Avenue, Vista Avenue and Alta Avenue to the north, San Antonio Avenue to the west, Santa Lucia Avenue to the south, and San Carlos Street, Junipero Avenue, Torres Street, and Monterey Street to the east. Runoff from the tributary catchment area primarily flows westward within surface drainage ditches, shallow pipes at street intersections, and subsurface storm drain pipes within the right-of-way.

Currently, collected runoff ultimately discharges into Carmel Bay at multiple locations along Carmel Beach.

The project consists of diverting dry weather runoff (captured between April to October) and the wet weather first flush stormwater runoff event (conservatively estimated as the runoff volume generated from the 85th percentile rainfall event) to the Pebble Beach sanitary sewer main for recycling at the Carmel Area Wastewater District (CAWD) Treatment Plant. The Pebble Beach sanitary sewer main terminates at CAWD Influent Pump Station, which pumps flows directly to the Treatment Plant. Recycled flows are used to augment water supply for irrigation purposes at the Pebble Beach golf courses located in Del Monte Forest (see Figure 1).

Flows would be diverted from the tributary drainage area at intersections along San Antonio Avenue as shown on Figure 4B. Surface runoff would be redirected via gravity from existing storm drains or shallow subsurface pipes using newly installed diversion pipes to the 27-inch diameter sanitary sewer main located below San Antonio Avenue (examples shown on Figure 4C), which discharges to the Pebble Beach sanitary sewer main. Pretreatment for trash and sediment would be installed at each diversion location to address regulatory requirements for trash control and to minimize stormwater solids entering the sewer system. Diversions would occur by installing an automated control system within existing storm drain and/or sanitary sewer manholes. A control 1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 754, Packet Page 854 F-14
valve and check valve would be installed on the diversion pipeline to ensure that the connection to the sewer main is functional only when desired (e.g., seasonally). The system could be adaptively managed based on observations of storm size, runoff volume, and pipe capacity. Any flows which exceed the diversion capacity when the diversion connection is functional would bypass the diversion structure and flow along the current drainage path, discharging to Carmel Bay.

A future expansion to this project could include capture and treatment of additional stormwater runoff for reuse. The potential project expansion would consist of constructing a new dedicated stormwater pipeline under San Antonio Avenue and a new dedicated stormwater holding tank at the CAWD facility at Rio Park (proposed to be located south of Larson Field). The tributary drainage area associated with this potential project expansion is shown on Figure 4A as a dashed gray line.

Proposed project is conceptual and subject to change based on future feasibility assessment, funding availability, and/or other information.

DESIGN INFORMATION
Tributary Drainage Area (TDA): 309 acres
TDA Imperviousness: 18%
TDA Urbanized Area: 303 acres
First Flush Runoff: 3 acre-feet/year (approximately 6% of annual runoff) Dry Weather Runoff: 8 to 11 acre-feet (April to October)

PROJECT BENEFITS
Net Recovered Water Volume: 11 to 14 acre-feet/year
Water Quality Benefits Treatment of pollutants in urban stormwater and dry weather flows that currently discharge to the Carmel Bay ASBS region.

Flood Management Benefits: None anticipated.

Natural Drainage System Benefits:

Removal of urban stormwater and dry weather flows that currently discharge to the Carmel Bay ASBS region, thereby partially restoring natural drainage patterns.

Habitat or Open Space Benefits: Diversion to the sanitary sewer will reduce runoff to the beach and the Carmel Bay ASBS region.

Community Benefits:

Diversion to the sanitary sewer will reduce runoff to the beach and the Carmel Bay ASBS and will augment water supply at the Pebble Beach Golf courses in Del Monte Forest.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 755, Packet Page 855 F-15

COST ESTIMATE

DESCRIPTION COST
Capital Cost $750,000
Annual Operations and Maintenance Cost2 $32,000 per year Estimated Life Cycle Annual Cost3 $75,000 per year
Unit Project Cost of Recovered Water $5,300 to $6,900 per acre-foot 2 The cost of treatment at the Carmel Area Wastewater Treatment Plant would be paid for by the City of Carmel-bythe-Sea or the Pebble Beach Company, if applicable. 3 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 756, Packet Page 856 F-16
9th Avenue
to Santa
Lucia Avenue
2nd Avenue
to 8th
Avenue
P:\GIS\MRWPCA\Project\Concept Projects\4. Carmel Diversion\Carmel by the Sea Diversion Final.mxd 8/29/2018 10:25:35 AM Legend
Carmel-by-the-Sea Project Drainage Area
Rio Park Project Expansion Drainage Area
Project Map Extent
Parcel Boundary
Existing Infrastructure
Pebble Beach Sanitary Sewer
Storm Drain
"/ CAWD Influent Pump Station
Proposed Control Measure
U Gravity Diversion Structure
³
Monterey Peninsula Stormwater Resource Plan
Carmel-by-the-Sea Stormwater Diversion Project
Carmel-by-the-Sea, CA
Catchment Map
Figure
4A
Oakland, CA September 2018
0 1,500
Feet
Del Monte Forest
Pebble Beach
Sanitary Sewer Main
CAWD
Wastewater
Treatment
Facility
Rio Park
Larsen
Field
Pebble
Beach
Golf
Links
To Additional
Pebble Beach Golf
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 757, Packet Page 857 Santa Lucia Ave
10th Ave
Scenic Rd
San Antonio Ave
11th Ave
12th Ave
13th Ave
Scenic Rd
9th Ave
Carmelo St
P:\GIS\MRWPCA\Project\Concept Projects\4. Carmel Diversion\Carmel by the Sea Diversion_zoom_Final.mxd 8/29/2018 10:27:38 AM ³
Monterey Peninsula Stormwater Resource Plan
Carmel-by-the-Sea Stormwater Diversion Project
Carmel-by-the-Sea, CA
Project Map
Figure
4B
Oakland, CA September 2018
DRAFT
8th Ave
7th Ave
Ocean Ave
4th Ave
2nd Ave
Carmel Way
Carmelo St
San Antonio Ave
Scenic Rd
Carmelo St
Continue
Continued
Legend
Carmel-by-the-Sea Project Drainage Area Existing Infrastructure Sanitary Sewer
Storm Drain
Proposed Control Measure
U Gravity Diversion Structure
0 300
Feet
2nd Ave to 8th Ave
9th Ave to Santa Lucia Ave
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 758, Packet Page 858 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 4C
Carmel-By-The-Sea Existing Diversion Opportunity Examples (Source: Google Maps Street View)
Example: Flows would be diverted
from existing surface drainage
pipes via gravity diversion
structures.

Location: 13th Avenue and San
Antonio Avenue.

Example: Flows would be
diverted from existing surface
drainage pipes via gravity
diversion structures.

Location 8th Avenue and San
Antonio Avenue.

Example: Flows would be diverted
from existing surface drainage
pipes via gravity diversion
structures.

Location: 13th Avenue and San
Antonio Avenue.

Approximate location
of existing subsurface
27” sanitary sewer line.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 759, Packet Page 859

5. PACIFIC GROVE MONTEREY ASBS WATERSHED – DAVID

AVENUE STORMWATER STORAGE AND DIVERSION

SITE DESCRIPTION
Jurisdiction: City of Pacific Grove
Location: David Avenue Reservoir, north of David Avenue, south of Hillcrest Avenue, west of Carmel Avenue
Land Owner: California American Water Company
Catchment1: CM-21

PROJECT CONCEPT
The proposed Pacific Grove Monterey ASBS Watershed-David Avenue Stormwater Storage and Diversion Project is located in Pacific Grove at the Monterey and Pacific Grove City boundary (Terry Street in Monterey and Carmel Avenue in Pacific Grove). The Project’s tributary drainage area, shown on Figure 5A, primarily includes an approximately 80-acre residential area south of David Avenue in Monterey, but also includes a small portion of a residential area west of David Avenue Reservoir in Pacific Grove. Stormwater runoff in the tributary drainage area generally flows to the north.

The proposed Project consists of capturing and detaining wet and dry weather runoff in a subsurface storage tank constructed within the existing David Avenue Reservoir in Pacific Grove.

The site would be backfilled and brought to grade, providing a publicly-owned surface above the storage tank that could be used for other purposes such as a community park.

The Project would include diversion of runoff by gravity from the storm drain line at the City boundary to the subsurface storage tank within the existing David Avenue Reservoir. Runoff would be detained during the wet season in the subsurface storage tank and metered out during the dry season via one of three potential pipe routes through Pacific Grove or Monterey (selected pipe route to be determined). Piped runoff would be diverted to the Monterey One Water (M1W) Interceptor Pipeline and recycled at the M1W Regional Treatment Plant (RTP) for water supply augmentation. The potential pipe routes, shown on Figure 5A and 5B, have been ranked in order of preference by the Cities of Pacific Grove and Monterey and M1W. The routes include:

1. Discharge via gravity from David Avenue Reservoir to the existing storm drain line in Pacific Grove that flows from Carmel Avenue to Pine Avenue via 14th Street. At Pine Avenue and 14th street, discharge would be diverted via proposed pipe along Pine Avenue to the 19th Street storm drain system. Runoff would reach the M1W Interceptor Pipeline via the Lover’s Point Diversion system and M1W Lift Station 13. Evaluation of project benefits for this route are included in the tables provided. 1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 760, Packet Page 860 F-20

2. Discharge from David Avenue Reservoir to the existing 8-inch sewer main on David Avenue at Terry Street in Monterey, if capacity is available. From David Avenue and Pine Street, flows would continue by gravity in the existing sewer system and ultimately flow from north to south down Wave Street to M1W Lift Station 7. Overflows from the underground storage tank would discharge to an existing storm drain at Carmel Avenue.

Detailed capacity and feasibility evaluations would be required to determine the viability of this route if it were to become the preferred course.

3. Discharge from David Avenue Reservoir to the existing City of Pacific Grove sewer main system on 2nd Street and Eardley Avenue in Pacific Grove. If capacity is available, flows would flow down Eardley and enter the M1W Interceptor Pipeline at Lift Station 11. Lift Station 11 pumps to Lift Station 12, which then pumps to Lift Station 13. Lift Stations 11 and 12 would cycle more frequently, so there would be no impact to Lift Station 13.

Overflows from the underground storage tank would discharge to an existing storm drain at Carmel Avenue, similar to route 2.

The greatest water supply benefit from the Project using current infrastructure at the RTP would be treating and recycling Project discharge during the dry season, April to October2. However, if stormwater runoff captured by the Project could be directed to the RTP during the wet season, with prior authorization of M1W, then approximately two to three times the volume of discharge could potentially be recovered for water supply augmentation. Payment of an adopted interruptible rate would apply.

A typical stormwater diversion detail is provided as Figure 5C. A concept of a below grade storage tank is shown as Figure 5D. An example concept of an above grade and a bowl-shaped park is shown as Figure 5E.

DESIGN INFORMATION
Tributary Drainage Area (TDA): 101 acres
TDA Imperviousness: 67%
TDA Urbanized Area: 99 acres
Subsurface Storage Tank Footprint | Depth | Volume: 1.0 acre | 11 feet | 11 acre-feet Average Annual Wet Weather Runoff: 50 to 63 acre-feet
Dry Weather Runoff: 3 to 4 acre-feet (April to October) Inflow Diversion Rate to the Subsurface Storage Tank3: 3,200 gallons per minute Outflow Diversion Rate from the Subsurface Storage Tank4: 300 gallons per minute Total Length of Proposed Pipeline5: 2,250 feet
2 It is less desirable to divert during the wet season with the current infrastructure in place because there are other ample stormwater sources being included into the Pure Water Monterey project. 3 Estimated based on flow from the 85th percentile storm (personal communication, Wallace Group, 5 June 2018). 4 Diversion rate estimated based on excess capacity of the M1W Interceptor Pipeline with other potential runoff diversions and the dry weather runoff rate.
5 Includes proposed storm drain on Pine Avenue for Route #1.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 761, Packet Page 861 F-21

PROJECT BENEFITS
Net Water Volume Recovered6: 14 to 29 acre-feet per year Water Quality Benefits: Reduction of 2,500 to 5,700 pounds of sediment per year7 and reduction
of dry and wet weather runoff to the Pacific Grove ASBS.

Flood Management Benefits: Minimal.

Natural Drainage System Benefits:

Removal of urban stormwater and dry weather flows that currently discharges to the Pacific Grove ASBS region, thereby partially restoring natural drainage patterns.

Habitat or Open Space Benefits: The project would include the development of a new park, increasing the total area of open space in the community.

Community Benefits: The project would provide access to a new community park.

COST ESTIMATE8

DESCRIPTION COST
Capital Cost $9,800,000
Annual Operations and Maintenance Cost $25,000 per year Estimated Life Cycle Annual Cost9 $590,000 per year
Unit Project Cost of Recovered Water $20,000 to $44,000 per acre-foot Proposed project is conceptual and subject to change based on future feasibility assessment, funding availability, and/or other information.
6 The Pure Water Monterey project is currently able to accept recovered runoff via diversion to the sanitary sewer in the dry season only. If runoff could be recovered during the wet season, then water supply benefits from the project would increase.
7 Pollutant loading rate calculated from TELR pollutant loading rates for the TELR catchments associated with the project drainage area.
8 Cost estimate includes the subsurface storage unit, landscaping and park costs, pipeline costs, (including storm drain work on Pine Avenue for Route #1), and associated diversion costs. 9 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 762, Packet Page 862 F-22
Lift Station #7
Lift Station #11
Lift Station #13
Lift Station #12

PACIFIC GROVE

MONTEREY
P:\GIS\MRWPCA\Project\Concept Projects\5. David Ave Reservoir\David Ave Reservoir Final.mxd 8/29/2018 10:30:45 AM Legend
David Avenue Project Drainage Area
David Avenue Reservoir
Project Map Extent
City Limits
Existing Infrastructure
M1W Interceptor Pipeline - Pressurized
"/ M1W Lift Station
Sanitary Sewer
Storm Drain
Proposed Storm Drain
0 2,200
Feet
³ Monterey Peninsula Stormwater Resource Plan
Figure
5A
Oakland, CA September 2018
To Monterey One Water (M1W) Lift Station 13.

Lover's Point Diversion System.

Route #
R
2 oute #3
Route
#1
(Preferred)
Pacific Grove Monterey ASBS Watershed
David Avenue Stormwater Storage and Diversion
Pacific Grove, CA
Catchment Map
Proposed Diversion to
Storm Drain or
Sanitary Sewer
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 763, Packet Page 863 U
@
Withers Ave
Terry St
Parcel St
David Ave
Gate St
Line St
Carmel Ave
2nd St
Alley
P:\GIS\MRWPCA\Project\Concept Projects\5. David Ave Reservoir\David Ave Reservoir Zoom 082918.mxd 8/29/2018 10:32:15 AM Legend
City Limits
David Avenue Reservoir Rim
Subsurface Storage Facility Footprint
Existing Infrastructure
Sanitary Sewer
Storm Drain
Proposed Control Measure
@ Inlet Structure
U Gravity Diversion Structure
Inlet Pipe
Diversion Pipe
Outflow Pipe
0 150
Feet
³ Monterey Peninsula Stormwater Resource Plan
Pacific Grove Monterey ASBS Watershed
David Avenue Stormwater Storage and Diversion
Pacific Grove, CA
Project Map
Figure
5B
Oakland, CA September 2018
Route #1 (Preferred)
Route #3
Route #2
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 764, Packet Page 864 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 5C
Typical Stormwater Diversion Detail
Source: Pacific Grove ASBS Stormwater Management, Sheet 3.7, Fall Creek Engineering, 2014.

Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 765, Packet Page 865 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 5D
Example Subsurface Storage Tank
Source: Personal communication, City of Pacific Grove, 31 May 2018 Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 766, Packet Page 866 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 5E
Concept for Above Grade and Bowl-Shaped Park
(Source: Personal communication, City of Pacific Grove, 31 May 2018 and StormTrap, www.StormTrap.com) Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 767, Packet Page 867

6. DEL MONTE MANOR PARK INFILTRATION PROJECT

SITE DESCRIPTION
Jurisdiction: City of Seaside
Location: Del Monte Manor Park
APN(s): 01263601002000
Land Owner: Del Monte Manor Inc.

Catchment1: CM-06
Parcel Size: 14 acres
Soil Type: Hydrologic Soil Group (HSG) A

PROJECT CONCEPT
The Del Monte Manor Park Infiltration Project, located within an affordable family rental housing complex in the City of Seaside, will retrofit a portion of the housing complex’s park in its southeastern corner with stormwater treatment facilities. The facilities would be installed to help mitigate flooding issues at the intersection of Yosemite Street and Sonoma Avenue in Seaside, treat and infiltrate runoff, and improve the aesthetics of the park. The tributary drainage area consists of a residential area extending north of Wanda Avenue, east of Yosemite Street, west of Skyview Drive and Ancon Street, and the southern portion of Del Monte Manor parcel. Runoff from the Yosemite Street and Sonoma Avenue intersection would also be collected and treated by the facilities, assuming grades allow for it. A catchment map is shown on Figure 6A.

The project would reduce urban runoff pollutant loads by routing runoff from a majority of the catchment from the existing storm drain located within Sonoma Avenue to a proposed pretreatment swale and bioretention facility treatment train. Smaller flows (up to approximately 50% of the average annual runoff produced from the drainage area) would be diverted from the existing storm drain through a proposed diversion pipe. The proposed pre-treatment swale would be installed adjacent to Sonoma Avenue’s northern sidewalk, and the proposed bioretention facility would be installed at the southwestern corner of the Del Monte Manor property. The proposed location of the bioretention is currently a low point which floods frequently during storm events when the existing undersized storm drain surcharges. This configuration is shown on the project map, Figure 6B.

The swale and bioretention facility would utilize native plants providing aesthetic and educational benefits. The swale would function as pre-treatment for the bioretention facility, which would retain and infiltrate stormwater into the underlying fast-draining native dune sand. Overflow from the bioretention facility would be piped to the existing storm drain in Yosemite Street, which drains to the north toward Broadway. The infiltration project could be implemented in conjunction with upsizing of storm drains in the Yosemite Street and Sonoma Avenue intersection, to best alleviate current flood conveyance deficiencies. However, such storm drain improvements are not included 1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 768, Packet Page 868 F-28
as part of this project at this time. Design of the project will require further investigation due to the absence of soil investigation/percolation testing, utility mapping and field verification.

Street views of the proposed location of the swale and bioretention facility are shown on Figure 6C. Conceptual illustrations and example photographs of vegetated swales are provided on Figures 6D and 6E, respectively. Conceptual illustrations and example photographs of bioretention facilities are provided on Figures 6F and 6G, respectively.

Following the 2006 Adjudication Decision that governs management of the Seaside Groundwater Basin, implementation of this project would require obtaining a permit from the Seaside Basin Watermaster to store water, via recharge, in(to) the Seaside Groundwater Basin. This permit is obtained through filing a Watermaster Storage Application. The Wastermaster has the authority to take the necessary actions to prevent contaminants from entering the groundwater supplies of the Seaside Basin, which present a significant threat to the groundwater quality of the Seaside Basin, whether or not the threat is immediate. A copy of the Watermaster Storage Application to store and recover non-native water from the Seaside Groundwater Basin is provided as Attachment A.

DESIGN INFORMATION
Tributary Drainage Area (TDA): 25 acres
TDA Imperviousness: 56 %
TDA Urbanized Area: 25 acres
Average Annual Wet Weather Runoff: 10 to 13 acre-feet
Dry Weather Runoff: 1 acre-foot
Bioretention Facility Footprint: 2400 square feet
Bioretention Facility Depth: 6 feet
Bioretention Media Depth: 3 feet
Annual Runoff Captured and Treated2: 49%

PROJECT BENEFITS
Pollutant Loads Reduced3: 930 pounds/year
Water Supply Benefits:

The project provides indirect benefits by infiltrating 7 acre-feet per year of urban runoff above a potable water supply aquifer.

Flood Management Benefits:

Flooding in the area will be improved through the retention and attenuation of runoff during storm events.

Natural Drainage System Benefits:

Removal of urban stormwater and dry weather flows that are currently discharged to the Pacific Ocean, thereby partially restoring natural drainage patterns.

Habitat or Open Space Benefits:

The open space area at the housing complex will be improved as a result of flood management.

Community Benefits:

The facility will be open to the public and will utilize native plants and provide informational signage. The drainage area to the project location contains a Disadvantaged Community (DAC).
2 Assumed soil percolation rate is 1 inch per hour.
3 Pollutant loading rate calculated from TELR for the TELR catchment associated with the project drainage area.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 769, Packet Page 869 F-29

COST ESTIMATE

DESCRIPTION COST
Capital Cost $330,000
Annual Operations and Maintenance Cost $4,700 per year4 Estimated Life Cycle Annual Cost5 $24,000 per year
Unit Project Cost of Recovered Water $3,300 to $3,500 per acre-foot 4 Estimate includes annual operations and maintenance of the pre-treatment swale, bioretention, and storm drain pipe. 5 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 770, Packet Page 870 F-30
P:\GIS\MRWPCA\Project\Concept Projects\6. Del Monte Manor\Seaside_DelMonteManor_082918.mxd 8/29/2018 10:33:47 AM Legend
Parcel Boundary
Del Monte Manor Project Drainage Area
Project Map Extent
Existing Stormwater Infrastructure
Storm Drain
0 700
Feet
³ Monterey Peninsula Stormwater Resource Plan
Del Monte Manor Park Infiltration Project
City of Seaside, CA
Catchment Map
Figure
6A
Oakland, CA September 2018
Proposed
Bioretention and Swale Location
Proposed Control Measures
Overflow Pipe
Diverson
Bioretention
Swale
!. Manhole
!. Outlet Structure
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 771, Packet Page 871 !.
!. !.

Sonoma Ave
Yosemite St
Sonoma Ave
Yosemite St
P:\GIS\MRWPCA\Project\Concept Projects\6. Del Monte Manor\Seaside_DelMonteManor_zoom.mxd 6/21/2018 3:58:10 PM Legend
Del Monte Manor Project Drainage Area Existing Stormwater Infrastructure Storm Drain
Proposed Control Measures
!. Manhole
!. Outlet Structure
Overflow Pipe
Diverson Pipe
Pre-treatment Swale
Infiltrating Bioretention Facility
0 100
Feet
³ Monterey Peninsula Stormwater Resource Plan
Del Monte Manor Park Infiltration Project
City of Seaside, CA
Project Map
Figure
6B
Oakland, CA June 2018
DRAFT
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 772, Packet Page 872 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 6C
Del Monte Manor Proposed Bioswale and Rain Garden Locations (Source: Google Maps Street View)
Bioswale Proposed Location
Rain Garden Proposed Location
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 773, Packet Page 873 Plan View
Check Dam if longitudinal
slope exceeds 6%
Outlet
Inlet
Flow Spreader
Roadway
Energy Dissipater
Flow Spreader at base
of each Check Dam
Low Flow Drain
Swale Vegetation:

Small plants, tall grasses and shrubs
Profile
Roadway Surface
Water Quality Depth
Flood Flow Depth
Swale Width
(Dividing berm required if width >10ft)
Freeboard
Shoulder
Swale Vegetation:

Small plants, tall grasses and shrubs
Low Flow Drain
September 2018
Figure 6D
Conceptual Illustration of a Vegetated Swale
Monterey Regional
Stormwater Resource Program
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 774, Packet Page 874 Profile
September 2018
Figure 6E
Examples of Vegetated Swales
Monterey Regional
Stormwater Resource Program
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 775, Packet Page 875 Plan View
Overflow
Catch Basin
Parking Lot Sheet Flow
Curb Stops
Outlet
Underdrain Collection System (If Required)
Stone Diaphragm
Optional
Sand Layer
Grass
Filter Strip
Gravel Curtain
Drain Overflow
Profile
Gravel
Curtain
Drain
Overflow
Optional Sand
Filter Layer
Curb Stop
Stone Diaphragm
Underdrain (If Required)
Planting Soil
September 2018 Monterey Regional
Stormwater Resource Program
Figure 6F
Conceptual Illustration of a Bioretention Facility
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 776, Packet Page 876 September 2018
Figure 6G
Example Photos from Bioretention Facilities
Monterey Regional
Stormwater Resource Program
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 777, Packet Page 877

APPLICATION TO STORE AND RECOVER NON-NATIVE WATER

FROM THE

SEASIDE GROUNDWATER BASIN
INSTRUCTIONS: This Application form is for use by Standard Producers in the Seaside Groundwater Basin (Seaside Basin) for the purpose of obtaining approval from the Seaside Basin Watermaster (Watermaster) to store Non-Native water in, and to subsequently recover that stored water from, the Seaside Basin. The application process is as described in Section III.L.3.j.xx of the Amended Decision of the Monterey County Superior Court, Case No. M66343, filed February 9, 2007.

Name of Standard Producer (Applicant)
Contact Information for Applicant:

Contact Person: _________________________________________________________ Address: _______________________________________________________________ Telephone: _____________________________________________________________ Proposed quantity of non-native water Applicant seeks to store through spreading or direct injection into the Seaside Basin (acre-feet per year):
_______________________________________________________________________ Proposed location(s) where the spreading or direct injection of non-native water into the Seaside Basin will occur. If injection will be performed using one or more injection wells, provide indentifying information for those wells including the aquifer(s) into which the injection will occur. If spreading will be performed, provide coordinate location information, as well as any physical street address information for the proposed location.
____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________
Proposed location(s) where the stored water may be recovered. Provide identifying information for each well from which the stored water will be recovered, including the aquifer(s) from which recovery will occur.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 778, Packet Page 878 F-38
____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________
Water quality characteristics of the non-native water proposed for spreading or direct injection into the Seaside Basin. Provide sufficient physical, chemical, and microbiological information about the water being proposed for storage, so that the Watermaster can determine whether or not storing such water will have any adverse water quality impacts on the Seaside Basin. Provide this information in the form of analytical results from a properly certified water testing laboratory, attached to this Application.

Also provide sufficient information to demonstrate to the Watermaster that the water quality characteristics of the water being proposed for storage will meet all of the requirements imposed on the Applicant by permits and/or approvals issued to the Applicant by the regulatory agency or agencies with jurisdiction.

Permits and approvals from regulatory agencies. Attach copies of all permits and approvals the applicant has received from regulatory agencies, which relate to the storage of water in the Seaside Basin. Such agencies will likely include some or all of the following:
• California Regional Water Quality Control Board
• California Department of Public Health
• County of Monterey Department of Health
• State Water Resources Control Board
Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 779, Packet Page 879 F-39

7. DRYWELL AQUIFER RECHARGE PROGRAM

SITE DESCRIPTION
Jurisdiction: City of Seaside
Location: 1. Southwest corner of the Noche Buena Street and Kimball Avenue intersection, adjacent to the entrance to William Pacchetti Park.

2. South central portion of Trinity Park on Trinity Avenue.

3. Right of way on Broadway Avenue, adjacent to the undeveloped parcel on the northwest corner of the San Lucas Street and Broadway Avenue intersection.

4. Western portion of David Cutino Park on La Salle Ave.

Land Owner: Locations 1, 2, and 4: City of Seaside
Location 3: Redevelopment Agency
Catchment1: Locations 1 and 2: CM-07
Locations 3 to 4: CM-06

PROJECT CONCEPT
The Drywell Aquifer Recharge Program in the City of Seaside, with support from regional partners, will focus on using drywells to recharge urban runoff to the Seaside Groundwater Basin.

The program focuses on treating and infiltrating runoff from residential areas within the City of Seaside. There are four proposed drywell locations included in this project: (1) Noche Buena Street and Kimball Avenue intersection; (2) South central portion of Trinity Park on Trinity Avenue; (3) San Lucas Street and Broadway Avenue intersection; and (4) Western portion of David Cutino Park on La Salle Ave. The drainage areas associated with each of the four proposed project locations are shown on Figure 7A. Runoff produced within all four drainage areas flows from the upgradient residential areas west of General Jim Moore Boulevard flows westward toward Monterey Bay within surface drainage ditches and/or storm drain pipes. Proposed drywells will infiltrate runoff that currently ultimately discharges to Monterey Bay at locations along Seaside Beach.

Proposed drywell locations were identified based on adequate depth to groundwater and proximity to the downgradient boundary of the residential neighborhoods, to maximize tributary drainage area and potential recovered runoff volume. Identified locations are on or adjacent to publiclyowned parcels where runoff could be diverted from adjacent surface streets (e.g. Location 1) or from the storm drain network via a gravity diversion pipe (e.g. Locations 2 through 4).

Pretreatment would occur through a hydrodynamic separator or a subsurface settling chamber at each location. Pretreatment facilities would drain to a series of hydraulically connected drywells.

The bottom depth of the drywells would be 10 feet above the groundwater table or higher. Flows that exceed the infiltration capacity of the drywells would bypass the facilities discharge along the current drainage path. Proposed drywells are estimated to capture approximately 8% of the average annual runoff from the combined drainage areas. An example drywell project that diverts runoff 1 See Monterey Peninsula Water Recovery Study Report, Appendix D, Figure 2A Catchment Detail Map.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 780, Packet Page 880 F-40
from a surface drainage ditch (Location 1) and an example project that diverts runoff from a subsurface storm drain pipe (Location 2) are shown on Figure 7B. The example project that diverts runoff from a subsurface storm drain pipe should be considered similar to the diversions proposed for Locations 3 and 4.

A drywell typical construction detail and specifications for the MaxWell® Plus drainage system by Torrent Resources Incorporated is provided as Figure 7C. The following documents are provided as attachments for additional information and reference regarding drywell typical construction details and drywell permitting and regulations in California:
• Attachment A. Drywell Stormwater BMP – Drywell Information, Detail, and Specifications for Enhanced Infiltration, from Geosyntec Consultants to Darla Inglis, Central Coast Low Impact Development Initiative (LIDI) Memorandum, September 2015. • Attachment B. Dry Well Fact Sheet: Uses, Regulations, and Guidelines in California and Elsewhere. Office of Environmental Health Hazard Assessment, California Environmental Protection Agency.

Proposed project is conceptual and subject to change based on future feasibility assessment, funding availability, and/or other information.

DESIGN INFORMATION
Tributary Drainage Area (TDA): 860 acres
TDA Imperviousness: 60%
TDA Urbanized Area: 857 acres
Average Annual Wet Weather Runoff: 370 to 470 acre-feet Dry Weather Runoff: 22 to 31 acre-feet (April to October) Depth to Groundwater: 25 to 110 feet
Drywell Diameter: 4 feet
Hydraulic Conductivity: 1 inch per hour
Number of Drywells: 62
Estimated Percent Capture: 8%
Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 781, Packet Page 881 F-41

PROJECT BENEFITS
Net Recovered Water
Volume: 50 to 67 acre-feet per year
Sediment Load Reduced2: 4,800 pounds per year
Flood Management Benefits: Infiltration at Location 1 would reduce street flooding on Kimball Avenue.

Natural Drainage System
Benefits:

Removal of urban stormwater and dry weather flows that are currently discharged to the Pacific Ocean, thereby partially restoring natural drainage patterns.

Habitat or Open Space
Benefits: None anticipated.

Community Benefits: None anticipated.

COST ESTIMATE

DESCRIPTION COST
Capital Cost $4,300,0003
Annual Operations and Maintenance Cost $59,000 per year4 Estimated Life Cycle Annual Cost5 $310,000 per year
Unit Project Cost of Recovered Water $4,600 to $6,200 per acre-foot 2 Pollutant loading rate calculated from TELR pollutant loading rates for the TELR catchments associated with the project drainage area.
3 Approximate capital cost per location are as follows: Location #1 = $660,000; Location #2 = $900,000; Location #3 = $480,000; Location #4 = $1,900,000.
4 Estimate includes annual operations and maintenance of pre-treatment devices (i.e., hydrodynamic separator or a subsurface settling chamber), dry wells, and the pipe that connects the dry wells to one another. 5 Assumes 30-year design life at 4% interest rate.

Appendix F: Concept Designs
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 782, Packet Page 882 F-42
Location 2
Location 1
P:\GIS\MRWPCA\Project\Concept Projects\7. Dry Well- Seaside\Seaside_DryWells_September2018.mxd 8/29/2018 10:37:59 AM Legend
Parcel Boundary
Project Map Extent
Seaside Dry Well Project Drainage Area
Proposed Control Measure
!. Drywells with Pretreatment
0 1,600
Feet
³
Monterey Peninsula Stormwater Resource Plan
Drywell Infiltration Program
City of Seaside, CA
Catchment Map
Figure
7A
Oakland, CA September 2018
Location 3
Location 4
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 783, Packet Page 883 Trinity Ave
P:\GIS\MRWPCA\Project\Concept Projects\7. Dry Well- Seaside\Seaside_DryWells_Zoom_Sept2018.mxd 8/29/2018 10:41:43 AM Legend
Parcel Boundary Existing Infrastructure
Storm Drain
Proposed Control Measure
!. Drywells with Pretreatment
U Gravity Diversion Structure
Diversion ³ Monterey Peninsula Stormwater Resource Plan Drywell Infiltration Program
City of Seaside, CA
Example Projects Map
Figure
7B
Oakland, CA September 2018
!. !. !. !. !. !. !. !. !. !. U
Kimball Ave
Noche Buena St
Location 1:

William Pacchetti Park
Location 2:

Trinity Park
0 150
Feet
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 784, Packet Page 884 Monterey Peninsula
Stormwater Resource Plan September 2018
Figure 7C
MaxWell® Plus Typical Drainage System Details and Specifications (Source: Torrent Resources Incorporated, www.torrentresources.com) Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 785, Packet Page 885 3415 South Sepulveda Blvd., Ste 500
Los Angeles, CA 90034
PH 310.957.6100
FAX 310.957.6101
www.geosyntec.com
M e mo r a n d u m
Date: September 2015
To: Darla Inglis, PhD, Central Coast Low Impact Development Initiative (LIDI)
From: Geosyntec Consultants, Inc.

Subject: Drywell Stormwater BMP - Drywell Information, Detail, and Specifications for Enhanced Infiltration
Geosyntec Project: LA0339

INTRODUCTION
This memorandum introduces a combined stormwater “Best Management Practice” (BMP) consisting of a biofiltration system (for flow-through treatment of stormwater, such as where infiltration is restricted) and drywell (to enhance infiltration). It also provides the justification and description for a standard design detail and specification for this type of system. Section 1 of this memorandum explains the need for engineering details and specifications for a system that will enhance the infiltration of captured stormwater, while also ensuring a minimum standard of water quality treatment to protect groundwater sources. This section explains why biofiltration is one of the most effective means of natural passive pretreatment available. Section 2 provides a summary of literature characterizing the risk of groundwater contamination from drywell injection of treated stormwater. Section 3 describes system components to address concerns of groundwater pollution and maintenance. Section 4 lists recommendations for further research to address knowledge gaps highlighted by this assessment.

1. THE NEED/VALUE OF THE ENGINEERING DETAILS AND SPECIFICATIONS Biofiltration (also referred to as bioretention with underdrains) is a highly effective type of stormwater treatment BMP that is designed to detain, filter, treat and release stormwater.

Primarily used to address urban stormwater runoff, biofiltration BMPs can reduce the volumes runoff rates and pollutant loads that can otherwise adversely impact receiving waters such as rivers, lakes, streams and the ocean. Recognizing that stormwater runoff is an underutilized water supply, there is growing interest in furthering the development of stormwater infiltration Appendix F: Concept Designs F-46
Council Regular Meeting, 2/7/2023, Item No. 10., Item Page 786, Packet Page 886 LIDI Drywell BMP
September 2015

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Monterey City CouncilFebruary 7, 2023

Monterey City Council
February 7, 2023