RECITALS
A.
B. On December 28, 2016, CITY and RCD entered into that certain First Amendment to First Amendment to Inter-Agency Agreement
provide water monitoring services.
C. On August 11, 2020, CITY and RCD entered into that certain Second Amendment to Second Amendment to Inter-Agency Agreement
provide water monitoring services.
D. On August 9, 2021, CITY and RCD entered into that certain Third Amendment to Third Amendment to Inter-Agency Agreement
provide water monitoring services.
E. On August 28, 2023, CITY and RCD entered into that certain Fourth Amendment to Fourth Amendment to Inter-Agency Agreement
provide water monitoring services.
F.
G.
AGREEMENT
1. 2.
3. Payment.
A.
B. Payment.
i.
ii.
C.
4. WHEREOF,
PACIFICA RCD
A
Draft Scope of Work
This San Mateo Resource Conservation District (RCD) Work Plan outlines work in water year 2026 through water year 2028 (WY26-WY28) that includes TMDL characterization monitoring and optional monitoring services on a time and materials (T&M) basis. As requested by the City of Pacifica, this work plan outlines the water quality monitoring services to fulfil the characterization monitoring requirement of the San Pedro Creek Bacteria TMDL monitoring requirements of WY26 and WY28 as well as optional WY27 monitoring to track point source pollution on a T&M basis. The RCD work plan consists of several components including Program Administration, Water Sampling, Data Analysis and Reporting, and Quality Assurance/Quality Control.
TMDL Characterization Monitoring
Background
San Pedro Creek and Pacifica State Beach are in the City of Pacifica and unincorporated county in San for impairment by FIB (e.g., E.
coli, Enterococcus). The Regional Water Quality Control Board (RWQCB) adopted the San Pedro Creek and Pacifica State Beach Bacteria TMDL in 2012 to address FIB impairment. The TMDL establishes water quality objectives (WQOs)
WQO for fecal indicator bacteria in San Pedro Creek is 235 MPN/100mL of E. coli in fresh water. The TMDL then sets wasteload allocations (WLAs), which are the number of allowable exceedances of WQOs. The WLAs at the mouth of San Pedro Creek allow one sample to exceed the WQO during the dry season and four samples to exceed during the wet season, assuming weekly sampling.
The TMDL requires a monitoring plan (MP) for the San Pedro Creek watershed to better characterize bacteria contributions and to assess compliance with WLAs. The County and City partnered with San Mateo Resource Conservation District (RCD) to conduct characterization monitoring in the creek to address the following questions:
1. Which land uses and/or sources contribute most to bacteria impairments in San Pedro Creek?
2. Are controllable bacteria sources (e.g., human, horses, and dogs) present in the San Pedro Creek watershed?
3. What are the multi-year indicator bacteria density trends in San Pedro Creek (i.e., are BMPs showing any effect)?
The characterization monitoring involves collecting water samples at various locations in the San Pedro Creek watershed and testing samples for E. coli. Site locations were selected at various confluences as water flows towards the mainstem of San Pedro Creek to allow for reach-specific analysis of potential sources and impacts of land use that helps to answer the first question above. In WY16, MST was added to the program. MST involves genetic testing for specific human, horse, dog, and universal Bacteroidales markers. Characterization monitoring for this program has been ongoing since WY16 and has adapted over the years.
Methods
In WY26 and WY28 E. coli and MST samples will be collected in the San Pedro Creek watershed during eight events (four wet season, and four dry season) at the following sites when there is flowing water present. Wet season samples will be collected between October and April, and dry season samples will be collected between May and September. The TMDL monitoring program specifies that, when possible, wet season sampling should occur within three days of 0.1 in of precipitation. Samples will be collected into sterilized 100 mL sampling containers without preservative and analyzed for E. coli in the laboratory using SM9223B-Quantitray. Results will be compared to the WQO of 235 MPN/100 mL.
WY26 Samples Sites
Site Name Lat Long
Subwatershed Parameters Assessed
SPCM San Pedro Creek Mouth 37.59600 -122.50550 Mainstem E. coli, Bacteroidales
(universal, human, horse,
dog)
PRLT
Peralta Bridge
Mainstem 37.58850 -122.49940 Mainstem E. coli
SHAO
Shamrock Watershed
Drainage Outfall 37.58810 -122.49863 Shamrock E. coli
USSH
Upstream of Shamrock
Drainage 37.58750 -122.49640 Mainstem E. coli
CCLM Crespi Canal Drainage 37.58960 -122.49410 Crespi
E. coli, Bacteroidales
(universal, human, horse,
dog)
COSD
Crespi Oviedo & Seville
Drive 37.59105 -122.49275 Crespi
E. coli, Bacteroidales (human,
dog)
CEA* Crespi Escalero Avenue 37.59447 -122.49273 Crespi E. coli CASD*
Crespi Alta Sereba
Drainage 37.59490 -122.48974 Crespi E. coli
CLMD
Crespi/La Mirada
Drainage 37.59390 -122.48940 Crespi
E. coli, Bacteroidales (human,
dog)
CVBC
Crespi Valencia
Buddhist Center 37.59456 -122.48845 Crespi
E. coli, Bacteroidales (human,
dog)
CDUT
Crespi Drainage Upper
Trident 37.59459 -122.48695 Crespi
E. coli, Bacteroidales
(universal, human, horse,
dog)
ADMS Adobe Drive Mainstem 37.58690 -122.49530 Mainstem
E. coli, Bacteroidales
(universal)
LMMS
Linda Mar Bridge
Mainstem 37.58160 -122.47850 Mainstem
E. coli, Bacteroidales
(universal)
SPMS
San Pedro
Middle/South Fork 37.58170 -122.47570 Mainstem E. coli
Note: Green indicates sample site is a storm drain and blue indicates sample site is an open channel.
MST samples will be collected into sterilized 100 mL bacteria bottles without preservative. All samples are to be delivered to Cel Analytical Services within six hours of collection and handled as required under approved laboratory methods.
Cel Analytical Laboratory Inc. Methodology
Analyte Method
Bacteroidales: Universal (UniB), Human (HF183),
Horse (New Horse), Dog (BacCan) Provisional EPA Method B; SIPP Total Coliform/E. coli SM9223B-Quantitray
For quality assurance and quality control (QA/QC), field duplicates will be collected during all sampling events at a different site, and a field blank will be collected once during the dry season and once during the wet season.
The Surface Water Ambient Monitoring Program (SWAMP), a state program that provides data quality assurance and data management tools to enhance data comparability across projects, establishes sample handling guidelines and Measurement Quality Objectives (MQOs) to maximize data comparability between programs for all matrix categories (e.g. freshwater, sediment, tissue) and Intended Data Use Categories (Investigation, Ambient, Public Health, Regulation) (SWAMP, 2022a). The MQO tables for freshwater indicator bacteria specify sample handling and QA/QC guidelines to evaluate and ensure data quality (SWAMP, 2022b). The San Pedro Creek monitoring program adheres to these guidelines where appropriate to ensure consistency with other projects across the state. A Relative Percent Difference (RPD) approach had been used to evaluate the precision of field and lab duplicate samples, but updated SWAMP MQO guidance now recommends evaluating precision by using a 95% Confidence Interval (CI) approach.
The following recommendations were identified in development of the WY24 San Pedro Creek and Pacifica State Beach Bacteria TMDL Characterization Monitoring Report and will be incorporated into the WY26 and WY28 MP:
Where possible, increasing sample resolution in sites that exhibit human marker detections and correspondingly high concentrations of E. coli during the dry season.
Analyzing for human MST markers at a greater number of sites during at least one wet season event to help identify priority areas and potential human sources of bacteria to the watershed.
Consider re-locating site CCLM to a location where flows can be more reliably sampled during the dry season.
Identifying appropriate statistical methods for evaluating change over time with greater resolution in future reports.
Consider a more active sampling approach, whereby E. coli and MST testing can be used to more adaptively track down specific sources and pathways (upon request on T&M basis as described below).
Task Breakdown
Task 1 Program Administration
Program administration involves program oversight, invoicing, correspondence, planning and project management such as:
Drafting internal resources (checklists, monitoring SOP, field data sheets, maps, project management tools etc.)
Site visits to each of the sampling locations
Communicating with the City of Pacifica, County of San Mateo and other partners Deliverables:
Quarterly invoices and reports
Meetings
Task 2 Water Sampling
Water samples will be collected from San Pedro Creek in WY26 through WY28 and analyzed for E. coli and Bacteroidales (universal, human, horse, and dog-specific) using methods and quality control (SWAMP) for Sampling and Analysis of Indicator Bacteria in Fresh Water. The MP standard operating procedure for this project will also follow requirements and recommendations from the following sources:
Municipal Regional Stormwater Permit (MRP) Order No. R2-2015-0049 -NPDES No. CAS612008 Provision C.14.c
The California Microbial Source Identification Manual or SIPP manual EPA Method B: Bacteroidales in Water by TaqMan® Quantitative Polymerase Chain Reaction (qPCR) Assay
DFG-MPSL SOP for Field Measurements and Field Collections of Water Samples in the Surface Water Ambient Monitoring Program
Deliverables:
Invites to sampling events
Field datasheets and laboratory Chain of Custody (COC) forms Post sampling status and observational updates
Task 3 Data Analysis and Reporting
The lab will analyze the Bacteroidales samples using Method B (EPA 2010) while incorporating recommendations from the SIPP manual (SCCWRP 2013) for universal, human, horse and dog-specific genetic markers. To quantify E. coli, the SM9223B-Quantitray method will be used. Once results from the labs are returned, the RCD will check the data for completeness, errors, questionable values, lab/field QC issues, and against the Chain of Custody form. The RCD will then enter data into Excel and display information. Data from the field datasheets will also be reviewed for legibility and errors and entered electronically.
Deliverables:
All data in a compiled spreadsheet format.
Characterization monitoring reports in WY26 and WY28.
Task 4 Quality Assurance/Quality Control
Quality Assurance (QA) and Quality Control (QC) measures will be implemented throughout all phases of the Work Plan. The RCD and Cel Analytical will follow standard protocols, handling procedures, hold times and other QA/QC measures for E. coli and Bacteroidales samples that comply with the SWAMP Quality Assurance Program Plan. Additional QA/QC measures for water sampling will include the following:
During each E. coli sampling event, a field duplicate will be collected A field blank and instrument blank will be collected once during the dry season and once during the wet season
During each Bacteroidales sampling event, a field blank for Universal Bacteroidales will be collected and a field duplicate will be collected once during the dry season and once during the wet season for all markers
Budget Tables
Total Budget for WY26 and WY28
TMDL Characterization
Monitoring Rate Annual Qty Total Qty Amount
Administrative Assistant $84 6 12 $1,008
Water Quality Technician $108 190 380 $41,040
Director of Water Resources $198 40 80 $15,840
Water Quality Specialist $140 205 410 $57,400
Administrative Officer $173 3 6 $1,038
Director of Stewardship $204 6 12 $2,448
Conservation Associate $77 15 30 $2,310
Engagement Officer $140 5 10 $1,400
Conservation Associate $77 45 90 $6,930
Executive Director $238 9 18 $4,284
Lab Fees $20,360 1 2 $40,720
Expenses $750 1 2 $1,500
Total $175,918.00
WY26 and WY28 Annual Budgets
WY26 Budget
TMDL Characterization Monitoring Rate Annual Qty Amount Administrative Assistant $84 6 $504
Water Quality Technician $108 190 $20,520
Director of Water Resources $198 40 $7,920
Water Quality Specialist $140 205 $28,700
Administrative Officer $173 3 $519
Director of Stewardship $204 6 $1,224
Conservation Associate $77 15 $1,155
Engagement Officer $140 5 $700
Conservation Associate $77 45 $3,465
Executive Director $238 9 $2,142
Lab Fees $20,360 1 $20,360
Expenses $750 1 $750
WY26 Total $87,959.00
WY28 Budget
TMDL Characterization Monitoring Rate Annual Qty Amount Administrative Assistant $84 6 $504
Water Quality Technician $108 190 $20,520
Director of Water Resources $198 40 $7,920
Water Quality Specialist $140 205 $28,700
Administrative Officer $173 3 $519
Director of Stewardship $204 6 $1,224
Conservation Associate $77 15 $1,155
Engagement Officer $140 5 $700
Conservation Associate $77 45 $3,465
Executive Director $238 9 $2,142
Lab Fees $20,360 1 $20,360
Expenses $750 1 $750
WY28 Total $87,959.00
WY26-WY28 Total $175,918.00
Lab Fees Breakdown
Analysis Cost
Per Sampling
Event
Sampling
Events Total
MST (Universal, Human, Dog,
Horse) $145 13 8 $15,080
FIB (E. coli) $55 12 8 $5,280
Total
$20,36
0 *The number of per sampling events was based on average samples collected instead of the sampling plan, which would include 24 MST and 15 FIB analyses.
Schedule- Approximate timeline (3-year contract)
TMDL Characterization Monitoring:
September 1, 2025 Start date of new contract/amendment
Oct 1, 2025 WY26 TMDL Characterization Monitoring Sampling begins Sep 30, 2026 WY26 TMDL Characterization Monitoring Sampling ends March 2027 WY26 Characterization report due
Oct 1, 2027 WY28 TMDL Characterization Monitoring Sampling begins Sep 30, 2028 WY28 TMDL Characterization Monitoring Sampling ends March 2028 WY28 Characterization report due
Optional Monitoring Services on a Time and Materials Basis The COP requested that the RCD work with them to collect additional data outside of the required TMDL sampling scope for adaptive water quality sampling. This data would be used to identify and further track bacterial inputs to San Pedro Creek and investigate sites as justification when updating the sampling plan and monitoring protocols with the water board. These additional monitoring services are not required by the TMDL. The following task list outlines what we think would be involved in this sampling, but can be adjusted to fit the needs of the COP throughout the contract. This task will be on a case-by-case basis. A notice to proceed and work plan approval will be agreed upon before the commencement of work by RCD from COP as needed. The following time and materials breakdown is meant to outline costs that may be associated with these sampling efforts.
Associated Costs for Work Tasks
Position Rate
Executive Director $238
Administrative Officer $173
Director of Water Resource Programs $198
Director of Stewardship $204
Water Quality Specialist $140
Water Quality Technician $108
Conservation Associate $77
Administrative Assistant $84
Lab Fees $225 per site
Mileage $40 per field day
Supplies $50 per field day
Additional Recommended Monitoring Services
Task 1 Program Administration
Program administration involves program oversight, invoicing, correspondence, planning and project management such as:
Drafting internal resources (checklists, monitoring SOP, field data sheets, maps, project management tools, etc.)
Site visits to each of the sampling locations
Communicating with the City of Pacifica, County of San Mateo and other partners Deliverables:
Quarterly invoices and reports
Meetings
Task 2 Water Sampling
Water samples will be collected from San Pedro Creek in WY27 and analyzed for E. coli and Bacteroidales (universal, human, horse, and dog-specific) using methods and quality control measures r Ambient Monitoring Program (SWAMP) for
Sampling and Analysis of Indicator Bacteria in Fresh Water. The MP Standard operating procedure for this project will also follow requirements and recommendations from the following sources:
Municipal Regional Stormwater Permit (MRP) Order No. R2-2015-0049 -NPDES No. CAS612008 Provision C.14.c
The California Microbial Source Identification Manual or SIPP manual EPA Method B: Bacteroidales in Water by TaqMan® Quantitative Polymerase Chain Reaction (qPCR) Assay
DFG-MPSL SOP for Field Measurements and Field Collections of Water Samples in the Surface Water Ambient Monitoring Program
Deliverables:
Invites to sampling events
Field datasheets and laboratory Chain of Custody (COC) forms Post sampling status and observational updates
Task 3 Data Analysis and Reporting
The lab will analyze the Bacteroidales samples using Method B (EPA 2010) while incorporating recommendations from the SIPP manual (SCCWRP 2013) for universal, human, horse and dog-specific genetic markers. To quantify E. coli, the SM9223B-Quantitray method will be used. Once results from the labs are returned, the RCD will check the data for completeness, errors, questionable values, lab/field QC issues, and against the Chain of Custody form. The RCD will then enter data into Excel and display information in a way that allows for statistical analyses and comparison to sites sampled on a T&M basis. Data from the field datasheets will also be reviewed for legibility and errors and entered electronically.
The RCD will use E. coli results to assess which locations have relatively high or low bacteria densities in addition to quantifying Bacteroidales from the specific sources to see if any of these contribute to fecal contamination. This information will be used to inform COP on which sampling locations should be brought to the waterboard for potential amendment.
This information is not required as part of the TMDL, however the RCD will still report directly to COP on the following:
1. Which land uses and/or sources contribute most to bacteria impairments in San Pedro Creek watershed?
2. Are controllable sources of fecal contamination (e.g., human, horses, and dogs) present in the San Pedro Creek watershed?
3. What are the multi-year indicator bacteria density trends in the Creek and at the Beach (i.e., do control measures appear to be reducing bacteria)?
Deliverables:
All data in organized spreadsheet format.
Site analysis report and recommendations to COP on which sites may potentially be amended or removed, in addition to analysis of items #1-3 above.
Task 4 Quality Assurance/Quality Control
Quality Assurance (QA) and Quality Control (QC) measures will be implemented throughout all phases of the Work Plan. The RCD and Cel Analytical will follow standard protocols, handling procedures, hold times and other QA/QC measures for E. coli and Bacteroidales samples that comply with the SWAMP Quality Assurance Program Plan. Additional QA/QC measures for water sampling will include the following:
During each E. coli sampling event, a field duplicate will be collected A field blank and instrument blank will be collected once during the dry season and once during the wet season.
During each Bacteroidales sampling event, a field blank for Universal Bacteroidales will be collected and a field duplicate will be collected once during the dry season and once during the wet season for all markers.