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NPDES Monitoring Requirement . 17 December 2001 <br /> Controlling Water Quality Criterion for <br /> Surface Waters <br /> ntenon nterron <br /> Concentration Quantitation <br /> �, (ug/L or noted) Limit(uglL or Suggested Test <br /> # Constituent CAS Number Basis (1) noted) Methods <br /> JOTHERCONSTITUENTS I- <br /> �Ammonia(as N) 7664417 !Amb ient Water Quali 1500(4) CEPA 350.1 <br /> Chloride 16887006 Agneultural Use 106.000 TEPA 300.0 <br /> Ftow 1 CFS <br /> Hardness(as CaCOt) - 5000 1 EPA 130.2 . <br /> Foamin¢A¢ents(MBAS) ISecondary MCL 500 SM5540C <br /> Nitrate(as N) - 14797558 Primary MCL 10,000 2,000 EPA 300.0 <br /> INitritc(as N) 14797650 Primary MCL j 1000 400 EPA 300.0 <br /> pH IIasin Plan Objective 6.5-8.5 0.1 EPA 150.1 <br /> Phosphorus.Total(as P) 7723140 USEPA IRIS 0.14 1 EPA 365.3 <br /> Specific conductance(EC) Agricultural Use 700 umhos/cm EPA 120.1 <br /> Sulfate Seconds MCL 250,000 500 EPA 300.0 <br /> !Sulfide(as S) Taste and Odor 0.029 EPA 376.2 <br /> ISulfi[e(as So}) No Criteria Available SM4500-503 <br /> Temperature <br /> Basin Plan Objective eF <br /> ;Total Disolved Solids(TDS) Agricultural Use ! 450,000 EPA 160.1 <br /> i I I <br /> FOOTNOTES: 4 <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 water sire i, <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 Fluoreserce. US EPA <br /> 5 Of <br />