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pRTUNQR TN© Q CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> (D 3935 N.Coronado Ave,Stockton CA.95204 Phone:(209)477-8195 <br /> Unifirst Corporation Project Number: UFC <br /> 819 N.Hunter Street Project Name: Effluent(1 per Week&2 per Week) Work Order No.: <br /> Stockton,CA 95205 Project Manager: William Geary <br /> Conventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Reporting Spike Source <br /> Analyte Result Limit Units Level Result %REC RPD Notes <br /> Blank(AA22718-BLK1) <br /> Total Suspended Solids(TSS) ND 1.0 mg/L <br /> LCS(AA22718-BS1) <br /> Total Suspended Solids(TSS) 1000 1.0 mg/L 1000 100 <br /> Duplicate(AA22718-DUPl) <br /> Total Suspended Solids(TSS) 38 1.0 mg/L 36 5 <br /> Blank(AA22719-BLK1) <br /> Biochemical Oxygen Demand ND 2.0 mg/L <br /> Duplicate(AA22719-DUPl) <br /> Biochemical Oxygen Demand 300 2.0 mg/L 300 0.3 <br /> Reference(AA22719-SRMl) <br /> Biochemical Oxygen Demand 200 2.0 mg/L 198 103 <br /> Blank(AA22720-BLK1) <br /> Oil&Grease(HEM) ND 3.0 mg/L <br /> LCS(AA22720-BS1) <br /> Oil&Grease(HEM) 40 3.0 mg/L 40.0 99 <br /> Blank(AA22725-BLK1) <br /> Methylene Blue Active Substances(MBAS) ND 0.100 mg/L <br /> LCS(AA22725-BS1) <br /> Methylene Blue Active Substances(MBAS) 0.398 0.100 mg/L 0.400 99 <br /> LCS Dup(AA22725-BSD1) <br /> Methylene Blue Active Substances(MBAS) 0.398 0.100 mg/L 0.400 99 0 <br /> Matrix Spike(AA22725-MS1) <br /> Methylene Blue Active Substances(MBAS) 8.11 0.100 mg/L 4.00 4.19 98 <br /> (�z/-Iilf� <br /> Approved By <br /> Precision Enviro-Tech. — California D.O.H.S.Cert.#2387 <br /> Page 12 of 21 <br />