Reporting Limits. Provided below is a list of maximum acceptable reporting limits and units for various constituents in aqueous, sediment, and tissue matrices. Contractor may not deviate from maximum acceptable reporting limits without approval of County. Contractor must provide laboratory and electronic data report (EDR) results in the units specified in the following table. Contractor must provide reasonable explanation for alternate proposed reporting limits. Aqueous Samples Reporting Limit and Units Na, Mg, K, Ca 1.0 mg/L XX0, Xx, XXX0, XX0 1.0 mg/L SO4 in Rainwater 0.5 mg/L F 0.1 mg/L B 0.1 mg/L Nitrite + Nitrate as NO3 0.4 mg/L NH3 as N 0.1 mg/L TKN 0.2 mg/L Total Phosphorus as PO4 0.06 mg/L Orthophosphate as P 0.02 mg/L SiO2 0.5 mg/L Total Non-filterable Residue (Total Suspended Solids (TSS)) 5.0 mg/L Volatile Non-filterable Residue (Volatile Suspended Solids (VSS)) 5.0 mg/L Total Filterable Residue (Total Dissolved Solids (TDS)) 5.0 mg/L Xx, Xx, Xx, Xx, Xx, Xx, Xx in freshwater 0.5 ug/L As, Se, in freshwater 0.4 ug/L Tl,in freshwater 0.2 ug/L Hg in freshwater 0.01 ug/L Zn in freshwater 2 ug/L Fe, Mn in freshwater 5 ug/L Ag, As, Be, Cd, Cr, Cu, Fe, Ni, Pb, Se, Sb, Tl, Zn, in seawater 0.05 ug/L Hg in seawater 0.5 ng/L Oil & Grease 5 mg/L MBAS 0.1 mg/L Organochlorine Pesticides (except Toxaphene) 2 ng/L Toxaphene 20 ng/L PCB Congeners 2 ng/L PCB Arochlors 20 ng/L Organophosphorus Pesticides 5 ng/L Carbaryl in freshwater 2 ug/L Pyrethroid Pesticides in freshwater 2 ng/L Fipronil Insecticides 5 ng/L Neonicitinoid Pesticides 4 - 4 ng/L Triclopyr 1.0 ug/L Glyphosate 5.0 ug/L Nonylphenol 100 ng/L Total Petroleum Hydrocarbons (TPH) 0.1 mg/L Volatile Organic Compounds (VOC) 5 ng/L Semi-Volatile Organic Compounds (SVOC) 5 ng/L Sediment and Tissue Samples (dry wt) Organochlorine Pesticides (except Toxaphene) 2 ug/kg Aqueous Samples Reporting Limit and Units Toxaphene 20 ug/kg Total Petroleum Hydrocarbons (TPHS) 5 mg/kg Volatile Organic Compounds (VOC) 2-100 ng/g Semi-Volatile Organic Compounds (SVOC) 2-100 ng/g Fipronil Insecticides 5 ng/g PCB Congeners 2 ug/kg PCBs (arochlors) 20 ug/kg Pyrethroid Pesticides 5 ug/kg Fipronil Insecticides 5 ug/kg PAHs 2 ug/kg Cadmium 0.05 mg/kg Copper 0.05 mg/kg Chromium (total) 0.05 mg/kg Lead 0.05 mg/kg Mercury 0.05 mg/kg Nickel 0.05 mg/kg Selenium 0.05 mg/kg Silver 0.05 mg/kg Zinc 0.05 mg/kg
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