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Download Excel NPDES Self Monitoring Program
United States Department of Agriculture and University of California, Davis, USDA Aquatic Weed Control Laboratory
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Organization
University of California, Aquatic Weed Control Laboratoryshow partners CVRWQCB
Program website
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Plan contactNathan Lacy
530-752-1493
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| Start date | 07/31/2008 |
| End date | None |
| Objectives | The University of CA owns land and the USDA owns the facility and operates the weed control laboratory. Fishery and plant culture wastewater is discharged to Putah Creek, a water of the United States. The Discharger proposes discharges up to a maximum of 0.075 mgd of wastewater to Putah Creek. Wastewater is generated from the aquatic plant culture tanks, greenhouses and office and trailers housing a water quality laboratory. The discharge prior to treatment may contain minimal fertilizers (including nitrogen, potassium and phosphorus), and minimal herbicides (including copper, triclopyr, fluridone and diquat). When herbicides are used, the wastewater is initially held in a two 2000-gallon tanks where evaporation is mazimized. Any water that does not evaporate is treated through two-55 gallon activated carbon filters and discharged to a series of two front ponds (five acre-feet. Herbicide experiments occur once or twice a year or not at all. Only wastewater containing herbicide and herbicide rinse water is treated by the carbon filters. Wastewater, plant culture water with fertilizer and storm water from the main pad, green house and the fishponds go directly to the two front ponds. The fishery has not been in use for the past few years and currently is not in use. Wastewater from the main facility laboratory is discharged to two 1200-gallon holding tanks. The wastewater discharged to the holding tanks is characterized as containing laboratory glass wash water and pH standards and buffers. Wastewater from the holding tanks is pumped to a truck and discharged at the campus main wastewater treatment plant. No wastewater from this facility is discharged to Putah Creek at this site. |
| Annual budget | None |
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Basins & sub-basins monitored
- Sacramento River (Sacramento River)
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map
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Sites Monitored
| Name |
Code |
Latitude |
Longitude |
Map |
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Putah Creek, 50 ft US of Discharge Point 001
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R-001U |
38.52712 |
-121.79707 |
locate |
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Putah Creek, discharge point of effluent from the storm water flap gate
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R-002 |
38.527103 |
-121.796992 |
locate |
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Putah Creek, 100 ft DS of Discharge Point 001
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R-003D |
38.527075 |
-121.796838 |
locate |
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Parameters Monitored
| Group | Parameters | Frequency |
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| Disinfection Byproducts |
Trihalomethanes |
Annual |
| General Water Quality |
Dissolved Oxygen (DO), Hardness, pH, Specific Conductance [EC @ 25 deg C], Temperature, Turbidity |
Monthly |
| Hydrology |
Flow |
Monthly |
| Major Ions & Minerals |
Asbestos, Cyanide |
Annual |
| Mercury |
Mercury |
Annual |
| Metals & Trace Elements |
Antimony, Arsenic, Beryllium, Cadmium, Chromium, Copper, Nickel, Selenium, Silver, Thallium, Zinc |
Annual |
| Organic Contaminants |
Acid extractable - other, Base-neutral extractable - other, Bis(2-ethylhexyl)phthalate, Organic Contaminants - other, PAHs - other, PCBs |
Annual |
| Pesticides |
Organochlorine Pesticides, Pesticides - other |
Annual |
| Priority Pollutants |
Priority Pollutants |
Annual |
| Water Toxicity |
Toxicity (chronic) - Ceriodaphnia, Toxicity (chronic) - Fathead minnow, Toxicity (chronic) - other |
Quarterly |
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Data Products Available
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