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SEQUOIA ANALYTICAL Certificate No: 1624 <br /> Renew Date: 09/30/2003 <br /> 13.16 01 Total Petroleum Hydrocarbons-Diesel LOFT <br /> 13.17 01 TRPH Screening EPA 418.1 <br /> 13.17 01 TRPH Screening EPA 418.1 <br /> 13.198 01 Aromatic Volatiles EPA 8021B <br /> 13.190 01 BTEX EPA 8021 B <br /> 13.19C 01 BTEX EPA 80218 <br /> 13.24C 01 PCBs EPA'8082 <br /> 13.24C 01 PCBs EPA 8082 <br /> 13.25C 01 Organochlorine Pesticides EPA 8081A <br /> 13.250 01 Organochlorine Pesticides EPA 8081A <br /> Field of Testing: 16-Wastewater Inorganic Chemistry,Nutrients and Demand <br /> 16.01 01 Acidity SM2310B(4a) <br /> 16.02 01 Alkalinity SM2320B <br /> 16.03 06 Ammonia EPA 350.3 <br /> 16.04 01 Biochemical Oxygen Demand SM5210B <br /> 16.05 03 Boron EPA 200.7 <br /> 16.07 04 Calcium EPA 200.7 <br /> 16.08 01 Carbonaceous BOD SM5210B <br /> 16.09 05 Chemical Oxygen Demand EPA 410.4 <br /> 16.09 06 Chemical Oxygen Demand SM5220D <br /> 16.10 03 Chloride EPA 325.3 <br /> 16.11 10 Chlorine Residual,Total EPA 330.5 <br /> 16.14 02 Fluoride EPA 340.2 <br /> 16.15 04 Hardness-Total as CaCO3 EPA 200.7 <br /> 16.17 04 Magnesium EPA 200.7 <br /> 16.19 02 Nitrite EPA 354.1 <br /> 16.20 01 Oil and Grease SM5520B <br /> 16.20 02 Oil and Grease EPA 413.1 <br /> 1621 02 Total Organic Carbon EPA 415.1 <br /> 16.22 04 Oxygen,dissolved EPA 360.1 <br /> 16.23 02 pH EPA 150.1 <br /> 16.25 01 Phosphate,Ortho EPA 365.3 <br /> 16.26 03 Phosphorus,Total EPA 365.2 <br /> 16.27 04 Potassium EPA 200.7 <br /> 16.28 02 Residue,Total EPA 160.3 <br /> 16.29 02 Residue,Filterable EPA 160.1 <br /> 16.30 02 Residue,Non filterable EPA 1602 <br /> 16.31 02 Residue,Settleable EPA 160.5 <br /> 16.34 04 Sodium EPA 200.7 <br /> 16.35 02 Conductivity EPA 120.1 <br /> 16.36 01 Sulfate EPA 375.1 <br /> 16.39 02 Surfactants EPA 425.1 <br /> 16.41 02 Turbidity EPA 180.1 <br /> 16.44 01 Total Recoverable Petroleum Hydrocarbons EPA 418.1 <br /> Field of Testing: 17-To)dc Chemical Elements in Wastewater <br /> 17.01 05 Aluminum EPA 200.7 <br /> 17.02 05 Antimony EPA 200.7 <br /> 17.03 • 07 Arsenic EPA 200.7 <br /> 17.04 06 Barium EPA 200.7 <br /> 17.05 06 Beryllium EPA 200.7 <br /> 17.06 07 Cadmium EPA 200.7 <br /> 17.07 03 Chromium(VI) SM3500-Cr D <br /> 17.08 08 Chromium,Total EPA 200.7 <br /> 17.09 07 Cobalt EPA 200.7 <br /> 17.10 07 Copper EPA 200.7 <br /> As of 0310312003,this list supersedes all previous lists for this certificate number. <br /> Customers:Please verify the current accreditation standing with the State. Page 3 of 4 <br />