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NPDES Monitoring Requirement 17 December 2001 <br /> Controlling Water Quality Criterion for <br /> Surface Waters <br /> Criterion— nterron <br /> Concentration Quantitation <br /> CTR (ug/L or noted) Limit(ug/L or Suggested Test <br /> # Constituent CAS Number Basis (1) noted) Methods <br /> OTHER CONSTITUENTS <br /> Ammonia(as N) 7664417 Ambient Water Quality 1500 (4) EPA 350.1 <br /> Chloride 16887006 Agricultural Use 106,000 EPA 300.0 <br /> Flow 1 CFS <br /> Hardness(as CaCOa) 5000 EPA 130.2 . <br /> Foaming Agents(IvIDAS) Secondary MCL 500 SM5540C <br /> Nitrate(as N) 14797558 Primary MCL 10,000 2,000 EPA 300.0 <br /> Nitrite(as N) 14797650 Primary MCL 1000 400 EPA 300.0 <br /> PH Basin Plan Objective 6.5-8.5 0.1EPA 150.1 <br /> Phosphorus,Total(as P) 7723140 USEPA IRIS 0.14 EPA 365.3 <br /> Specific conductance(EC) Agricultural Use 700 umhos/cm EPA 120.1 <br /> Sulfate Secondary MCL 250,000 500 EPA 300.0 <br /> Sulfide(as S) Taste and Odor 0.029 EPA 376.2 <br /> Sulfite(as SOD No Criteria Available SM4500-S03 <br /> Temperature Basin Plan Objective OF <br /> Total Disolved Solids(TDS) Agricultural Use 450,000 EPA 160.1 <br /> FOOTNOTES: <br /> (1) -The Criterion Concentrations serve only as a point of reference for the selection of the appropriate analytical <br /> method. They do not indicate a regulatory decision that the cited concentration is either necessary or sufficient for <br /> full protection of beneficial uses. Available technology may require that effluent limits be set lower than these <br /> (2)-Freshwater aquatic life criteria for metals are expressed as a function of total hardness(mg/L)in the water body. <br /> Values displayed correspond to a total hardness of 40 mg(L. <br /> (3)-For haloethers <br /> (4)-Freshwater aquatic life criteria for ammonia are expressed as a function of pH and temperature of the water <br /> body.Values displayed correspond to pH 8.0 and temperature of 22 C. <br /> (5)-For nitrophenols. <br /> (6)-For chlorinated naphthalenes. <br /> (7)-For phthalate esters. <br /> (8)-Basin Plan objective=2 ug/L for Salt Slough and specific constructed channels in the Grassland watershed. <br /> (9)-Criteria for sum of alpha-and beta-forms. <br /> (10)-Criteria for sum of all PCBs. <br /> (11)-Mercury monitoring shall utilize"ultra-clean"sampling and analytical methods. These methods include: <br /> Method 1669: Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels,US EPA; and <br /> Method 1631:Mercury in Water by Oxidation,Purge and Trap,and Cold Vapor Atomic Fluoresence,US EPA <br /> 5 of <br />