2246 Sixth Street
Berkeley, CA 94710
510.883.9873
www.lwa.com
LARRY WALKER ASSOCIATES
MRP Support Scope of Services 1
March 18, 2026
Diana Cangco, City Engineer
City of Union City
34009 Alvarado-Niles Rd, Union City, CA 94587
[email protected]
Subject: MRP Support Scope of Services
Dear Ms. Cangco:
In response to your request, Larry Walker Associates (LWA) is pleased to submit this proposal for stormwater compliance planning support for the Union City (City) in connection with the National Pollutant Discharge Elimination System (NPDES) Municipal Regional Stormwater Permit (MRP).
LWA is an engineering, science, and regulatory consulting firm that specializes in public agency compliance support for NPDES permits. We have experience working with municipal stormwater permittees in the Bay Area and other regions throughout California, including the Alameda Countywide Clean Water Program (ACCWP). As you know, LWA is active with the Bay Area Municipal Stormwater Collaborative and the California Stormwater Quality Association. Through this involvement and our work with other stormwater Permittees, LWA has an in-depth understanding of the MRP, and we will leverage this knowledge and experience to assist the City in meeting its regulatory requirements.
Nicole Wilson will serve as LWA’s project manager for this work. Ms. Wilson has extensive experience with the MRP and strong organization and project management skills. She is currently supporting the City of San Leandro on a similar work effort and supports the Contra Costa Clean Water Program with a variety of MRP compliance efforts. Ms. Wilson will be supported by a team of technical staff and me as the principal in charge.
LWA understands that the City plans to utilize the “pass-through” clause in the contract between the ACCWP and LWA. ACCWP authorizes work through Action Plans on a fiscal year (FY) basis; therefore, we scoped the effort to align with FY 2025-26.
The attached scope is based on our understanding of the compliance planning support that you identified.
The scope is structured to be flexible to assist you in planning for future needs and prioritizing the tasks you would like LWA to assist the City to accomplish. Work would be conducted on a time-and-materials basis. The budget for this work effort is estimated at a not-to-exceed value of $ 126,200 for FY 2025-26 unless authorized by the City and documented in an ACCWP Action Plan.
Please let me know if you have any questions. We look forward to collaborating with you on this project.
Sincerely,
Sandy Mathews, Vice President
Larry Walker Associates, Inc.
2246 Sixth Street
Berkeley, CA 94710
510.883.9873
www.lwa.com
LARRY WALKER ASSOCIATES
MRP Support Scope of Services 2
SCOPE OF SERVICES FOR THE CITY OF UNION CITY
MARCH 2026
LWA will provide as-needed compliance planning support to the City of Union City (City) in connection with the Municipal Regional Stormwater Permit (MRP). The City will authorize the as-directed work efforts through email or telephone confirmation. LWA will work with the City to establish tasks and schedules. In the conduct of any fieldwork, LWA will not act in a health and safety advisory role for City staff or its consultants.
Fiscal Year 2025-26 (March 2026-June 2026)
Task 1. Compliance Planning and Coordination
LWA will assist the City in planning for the implementation of the MRP. This task will include:
• Participating in monthly coordination with the City Engineer and key staff (4 meetings in FY 2025- 26). We anticipate the meetings will be held virtually. • Preparing a city-specific work plan. The work plan will be based on the 5-year work plan/checklist developed for the Alameda Countywide Clean Water Program (ACCWP), with the addition of identifying the positions or units responsible for implementing the MRP programs. • Assisting the City to identify gaps or needs and preparing topic-specific briefings or summaries for key work units.
Task 2. Trash Compliance Support
The scoping of this task is based on the available information and may be adjusted in consultation with the City upon review of the geographic information system (GIS) data and supporting information from the City’s engineering consultant.
a) Verify and Inspect Private Land Drainage Areas (PLDAs) The City’s engineering consultant identified 115 PLDAs within the City. The City committed to implementing the PLDA program and completing the inspections by June 2026. LWA will develop and implement the PLDA program for the City. The PLDA inspections is a one-time activity.
Following the initial inspection and follow-up with the property owners, further reviews of trash conditions would be assessed via the City’s commercial/industrial business inspection program.
The program will be based on the methodology employed by other MRP permittees and involves the following:
• Review the potential PLDA determinations and data developed by the City’s engineering consultant. In this step, LWA will confirm that all required parcels, including parcels less than 10,000 sf, were included in the list of potential PLDAs. • Conduct a desktop analysis of the potential PLDAs. This step typically eliminates parcels that do not qualify as PLDAs, e.g., parks, parcels draining to large trash capture devices. • Conduct field visits to verify that the parcels are PLDAs. This step is a quick screening visit to confirm the drainage infrastructure, including the presence of trash capture devices, and that the system drains to the City’s system.
• Coordinate with the ACCWP GIS consultant to update the PLDA inspection Application. • Prepare for and conduct PLDA inspections of verified PLDAs. This step involves coordinating field crews and scheduling inspections with the parcel owners.
LARRY WALKER ASSOCIATES
MRP SUPPORT SCOPE OF SERVICES 3
• Inspect verified PLDAs. This step involves communicating with the parcel owners about the inspection, conducting and documenting the inspections, and in coordination with the City, communicating the results to the parcel owners. Depending on parcel size, each inspection can take up to 30 minutes.
• Coordinate with the City to send final inspection results and any needed trash management recommendations in letters to parcel owners. s.
PLDA inspections are performed using the parcel-based OVTA protocol and include inspecting and documenting outdoor trash management BMPs. LWA will use the ACCWP PLDA Inspection Application on Field Maps to save the inspection details. LWA will coordinate with the City to complete the PLDA inspections by June 30, 2026, after June. b) Conduct On-Land Visual Trash Assessment (OVTAs)
Following the submittal of the City’s notice of non-compliance, the City determined there were areas not amenable to the installation of trash capture devices and is opting to implement institutional controls verified by OVTAs. At the time of the development of this estimate, the associated drainage areas are not known and need to be verified in the first steps of this task. For the purposes of budgeting, LWA assumed two field days would be needed to conduct the limited set of OVTAs in the public right-of-way.
LWA will develop and implement an OVTA program for the City and will train City staff to conduct OVTAs. The OVTA program needs to assess at least 10% of trash-generating curb-miles for each trash management area (TMA), in areas that are not otherwise treated by trash capture devices, proportional to the baseline trash load category. To obtain statistically significant data, OVTAs are typically conducted three times a year, with at least one assessment in the rainy season and one in the dry season. For the fiscal year 2025-26, one round of OVTAs are planned. • Desktop analysis of the assessment locations. LWA will confer with the City and review the existing GIS data to clarify the areas where the City cannot install trash capture devices in the public right of way. LWA will conduct a GIS analysis and a photographic review of sites using Google Street View to ensure sites are safe. Assessment segments will be sized based on the assessment method: walking segments will be 250 feet, and driving segments will be 500 feet.
• Create an assessment application and assessment maps. LWA will coordinate with the City’s GIS Staff to create a tablet or phone application to complete the assessments in the field.
This application may be created using the ESRI ArcGIS Online (AGOL) tool Field Maps, or another tool. LWA will create maps of the assessment areas for use in the field. These maps will be created for the FY 2025-26 OVTA effort, as well as the ongoing OVTA program. • OVTA scheduling. OVTAs need to be scheduled for the mid-point of ongoing trash control measures, such as street sweeping and on land clean upon-land clean-up events, to assess the “average” amount of trash at any given time. OVTAs must also be postponed 48 hours after a rain event with more than 0.5 inches of rain in a 24-hour period. LWA will schedule the FY 2025-26 OVTAs and train City staff on how to schedule OVTAs in the future. • Conduct OVTAs and train City staff. LWA will conduct the first round of OVTAs and train City staff on how to perform OVTAs. The training will include a safety presentation and field training (shadowing) with assessment examples.
c) Update AGOL Trash Generation Maps and Load Accounting LWA will coordinate with the City staff to update the City’s trash management data in the ACCWP AGOL system. This effort will include:
LARRY WALKER ASSOCIATES
MRP SUPPORT SCOPE OF SERVICES 4
• Adding trash capture devices installed in 2024-25 and 2025-26 and calculating the tributary drainage area.
• Conducting a desktop analysis of OVTA results and the drainage areas of installed trash capture devices to assess the trash load reductions achieved through street sweeping and on-land clean-up events, as represented through OVTA results.
Task 3. As Needed Support
This task is intended to provide flexibility to assist the City with tasks or needs that are identified during the compliance planning process. Work performed under this task would be directed by the City.
Through the Compliance Planning and Coordination task, the City and LWA will identify supplemental support that may be needed, and this may include efforts that need to be reported in the FY 2025-26 Annual Report. A preliminary review of tasks includes:
• Report and certification that 80% of storm drains are marked with a no dumping label. (C.2.g) • Compilation of lessons learned on GSI Plan implementation and report on progress toward the C.3.j retrofit target. (C.3.j)
• Plan to update the City’s MS4 Map. (C.5.f).
• Report on the status of the implementation of the Asset Management Plan, including plans to complete the condition assessments. (C.20)
• Review of the FY 2024-25 Cost Report Spreadsheet and preparation to compile the FY 2025-26 Cost Report Spreadsheet. (C.21)
Fiscal Year 2025-2026 Estimated Budget
Task Effort
(Hours)
Budget
1 Compliance Planning and Coordination 55 $12,600
2 Trash Compliance Support
a Private Land Drainage Area Program (Private Parcels) 285 $54,100 b On Land Visual Trash Assessments (Public ROW) 122 $21,900 c AGOL Updates 86 $16,900
3 As Needed Support 91 $20,600
FY Total 638 $126,200
Proposed Scope of Services Approved by the City
Joan Malloy Date
City Manager