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Sawmills And Planing Mills, General, Chester, California. NPDES permit CA0004391 expired Jul 31, 2025; its limits still apply. Last 12 months: no values over a limit, 13 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year |
| Temperature, water deg. fahrenheit | instantaneous maximum | report only (deg F) | all year |
| Turbidity | monthly average | report only (NTU) | all year |
| Turbidity | daily maximum | report only (NTU) | all year |
| Specific conductance | daily maximum | report only (umho/cm) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | report only (mg/L) | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Solids, settleable | monthly average | report only (mL/L) | all year |
| Solids, settleable | daily maximum | report only (mL/L) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Carbon, dissolved organic [as C] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Calcium, total recoverable | daily maximum | report only (mg/L) | all year |
| Calcium, total recoverable | daily maximum | report only (mg/L) | all year |
| Magnesium, total recoverable | daily maximum | report only (mg/L) | all year |
| Magnesium, total recoverable | daily maximum | report only (mg/L) | all year |
| Sodium, total recoverable | daily maximum | report only (mg/L) | all year |
| Sodium, total recoverable | daily maximum | report only (mg/L) | all year |
| Potassium, total recoverable | daily maximum | report only (mg/L) | all year |
| Potassium, total recoverable | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year |
| Cobalt, total recoverable | daily maximum | report only (ug/L) | all year |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year |
| Iron, total recoverable | daily maximum | report only (ug/L) | all year |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year |
| Thallium, total recoverable | daily maximum | report only (ug/L) | all year |
| Beryllium, total recoverable [as Be] | daily maximum | report only (ug/L) | all year |
| Boron, total recoverable | daily maximum | report only (mg/L) | all year |
| Boron, total recoverable | daily maximum | report only (mg/L) | all year |
| Arsenic, dissolved [as As] | daily maximum | report only (ug/L) | all year |
| Barium, dissolved [as Ba] | daily maximum | report only (ug/L) | all year |
| Barium, total recoverable | daily maximum | report only (ug/L) | all year |
| Beryllium, dissolved [as Be] | daily maximum | report only (ug/L) | all year |
| Cadmium, dissolved [as Cd] | daily maximum | report only (ug/L) | all year |
| Chromium, dissolved [as Cr] | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year |
| Cobalt, dissolved [as Co] | daily maximum | report only (ug/L) | all year |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (ug/L) | all year |
| Lead, dissolved [as Pb] | daily maximum | report only (ug/L) | all year |
| Manganese, dissolved [as Mn] | daily maximum | report only (ug/L) | all year |
| Thallium, dissolved [as Tl] | daily maximum | report only (ug/L) | all year |
| Molybdenum, dissolved [as Mo] | daily maximum | report only (ug/L) | all year |
| Nickel, dissolved [as Ni] | daily maximum | report only (ug/L) | all year |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year |
| Silver, dissolved [as Ag] | daily maximum | report only (ug/L) | all year |
| Silver total recoverable | daily maximum | report only (ug/L) | all year |
| Vanadium, dissolved [as V] | daily maximum | report only (ug/L) | all year |
| Zinc, dissolved [as Zn] | daily maximum | report only (ug/L) | all year |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year |
| Antimony, dissolved [as Sb] | daily maximum | report only (ug/L) | all year |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year |
| Aluminum, dissolved [as Al] | daily maximum | report only (ug/L) | all year |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year |
| Chromium, total recoverable | daily maximum | report only (ug/L) | all year |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year |
| Vanadium, total recoverable | daily maximum | report only (ug/L) | all year |
| Molybdenum, total recoverable | daily maximum | report only (ug/L) | all year |
| Selenium, dissolved [as Se] | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year |
| Oil and grease | daily maximum | report only (mg/L) | all year |
| Oil and grease | daily maximum | report only (mg/L) | all year |
| Manganese, total recoverable | daily maximum | report only (mg/L) | all year |
| Manganese, total recoverable | daily maximum | report only (mg/L) | all year |
| Manganese, total recoverable | daily maximum | report only (ug/L) | all year |
| Tannin and lignin | daily maximum | report only (mg/L) | all year |
| Toluene | daily maximum | report only (ug/L) | all year |
| Toluene | daily maximum | report only (ug/L) | all year |
| Aldrin | daily maximum | report only (ug/L) | all year |
| Aldrin | daily maximum | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | all year |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year |
| Chemical Oxygen Demand [COD] | daily maximum | report only (mg/L) | all year |
| %Surv Static Renewal 96Hr Oncorhynchus mykiss | minimum | ≥ 70 % survival | all year |
| %Surv Static Renewal 96Hr Oncorhynchus mykiss | minimum | ≥ 70 % survival | all year |
| %Surv Static Renewal 96Hr Oncorhynchus mykiss | minimum median | ≥ 90 % survival | all year |
| %Surv Static Renewal 96Hr Oncorhynchus mykiss | minimum median | ≥ 90 % survival | all year |
| % Survival Flow Through 96Hr Acute Oncorhynchus mykiss | minimum | ≥ 70 % survival | all year |
| % Survival Flow Through 96Hr Acute Oncorhynchus mykiss | minimum | ≥ 70 % survival | all year |
| % Survival Flow Through 96Hr Acute Oncorhynchus mykiss | minimum median | ≥ 90 % survival | all year |
| % Survival Flow Through 96Hr Acute Oncorhynchus mykiss | minimum median | ≥ 90 % survival | all year |
Cited limits by parameter: California's rules and the federal ones.
Same industry: the 3 Lumber and Wood Products permits in California.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/CA0004391 · MCP: https://passage-data.com/mcp