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City of Salinas
Monitoring and Reporting Program WY23/24
Scope and Budget
DESCRIPTION & PERMIT REQUIREMENT
The City of Salinas is required to perform a Monitoring and Reporting Program (MRP) as indicated in Section K and Attachment D of the NPDES permit. The current MRP was adopted in July 2017 and is in its sixth monitoring year. The City will continue with the current MRP progra m for a seventh monitoring season, while a redesigned MRP is refined and approved by the Water Board. Resources under this scope will therefore support the monitoring and reporting program under the current and approved MRP. This monitoring includes continuous hydrology measurements and water quality stormwater sample collection at three urban drainage outfalls to directly sample and better understand the stormwater volume and pollutant loads generated from the City and discharged to regulated receiving waters. Water quality samples are collected at Gabilan and Natividad upstream of the Salinas MS4 boundary to determine water quality conditions associated with upstream drainages. All data collected will be managed, reviewed, synthesized, and summarized in annual report.
CONTRACT OBJECTIVES :
● Coordinate all stakeholders and consultants to effectively monitor stormwater to meet permit compliance including field sampling teams at urban outfalls, receiving waters, and analytical laboratories.
● Perform and collect stormwater samples at designated urban outfalls for a minimum of three rain events.
● Perform and collect stormwater samples at background receiving water sites and receiving water site at nine visits per year.
● Compile all analytical, hydrology, and water quality data and synthesize into an annual report for the City to submit to the Regional Board.
BUDGET : $250,000
Site Classification Site ID
Photo Monitoring
Flow (cfs)
Precipitation
Temperature
Total Suspended Solids (TSS)
Total Dissolved Solids (TDS)
Turbidity
Fecal Coliform
pH
Conductivity
Dissolved Oxygen
Hardness
Total Ammonia
Unionized Ammonia
Total Nitrogen
Nitrate + Nitrite (as N)
Orthophosphate
Total Phosphorus (as P)
Total Arsenic
Total Cadmium
Total Copper
Total Lead
Total Nickel
Total Zinc
Dissolved Zinc
Pyrethroids
Fipronil
Imidacloprid
Hyalella Azteca (96-hr)
Chironomus dilutus (96-hr)
Benthic Invertebrate and Algae
Associated Habitat Assessment
Toxicity: Hyalella Azteca (10-day)
Pyrethroid Pesticides in Sediment
Sediment Grain Size
Total Organic Carbon
RD730 I W I PPPPPP PPP PP PPPP P CC
RD513 I W I PPPPPP PPP PP PPPP P CC
RD518 I W I PPPPPP PPP PP PPPP P CC
3 0 9 U 1 9 F FW F G F F G F F F GGG GG GGGG G GG
309 ALD F F F G F F G F F F GGGGGGGGGGGGGGG G G G GGG G G G 309DAV GG
309GAB F F F F F G F F F GGG GG GGG G
309NAD F F F F F G F F F GGG GG GGG G
G Grab Sample Annually; Continuous ‐ instruments @ 10 min, weather precip @ 60 min volume C Composite of Passive Samples Annually; at least 3 rain events including first flush; up to 4 discrete samples per event P Passive sampler ‐ discrete Annually; First Flush only; up to 4 discrete samples per event at instrumented outfalls I Instrumentation Yr 1 and Yr 5; First Flush only; composite of up to 4 samples per event F Field Measurement One yr only ‐ monthly Oct ‐ Apr (include 2 rain events: first flush event +1 other) and 2 dry months ‐July and Sep W Weather Station One year only ‐ once in dry, once in wet season One year only ‐ once in spring
Annually; monthly Oct ‐ Apr (include 2 rain events: first flush event +1 other) and 2 dry months ‐July and Sep Annually; First Flush Only
Sediment Analyte
Suite
Urban Drainage
Outfall
Receiving Water
Background
Receiving Water*
Sample Type Frequency Key
Parameter Groups Traditional Water Quality Suite
(Nutrients & Chemical) Metals Organics Water
Toxicity
Bio
Assess
ments
* All analytes but fecal coliform will be sampled and analyzed under the CMP program. The MRP addresses sampling and analysis for fecal coliform and First Flush analytes.
TABLE 1
Monitoring and Reporting Program analyte schedule at all moni- toring stations.
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