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pRTUNQR TN© Q CERTIFICATE OFANALYSIS <br /> Analytical Laboratory <br /> (D 3935 N.Coronado Ave,Stockton CA.95204 Phone:(269)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 /> Reference(AA21804-SRMl) <br /> Lead 0.045 0.0050 mg/L 0.0500 89 <br /> Copper 0.051 0.050 0.0500 102 <br /> Zinc 0.054 0.020 0.0500 108 <br /> Nickel 0.051 0.0050 0.0500 102 <br /> Chromium 0.050 0.010 0.0500 101 <br /> Arsenic 0.047 0.010 0.0500 94 <br /> Silver 0.053 0.010 0.0500 106 <br /> Blank(AA21908-BLK1) <br /> Biochemical Oxygen Demand ND 2.0 mg/L <br /> Duplicate(AA21908-DUPl) <br /> Biochemical Oxygen Demand 450 2.0 mg/L 450 0.9 <br /> Reference(AA21908-SRMl) <br /> Biochemical Oxygen Demand 200 2.0 mg/L 198 99 <br /> Blank(AA21910-BLK1) <br /> Total Suspended Solids(TSS) ND 1.0 mg/L <br /> LCS(AA21910-BSI) <br /> Total Suspended Solids(TSS) 1000 1.0 mg/L 1000 100 <br /> Duplicate(AA21910-DUPl) <br /> Total Suspended Solids(TSS) 520 1.0 mg/L 520 0.4 <br /> Blank(AA22014-BLK1) <br /> Oil&Grease(HEM) ND 3.0 mg/L <br /> LCS(AA22014-BS1) <br /> Oil&Grease(HEM) 40 3.0 mg/L 40.0 100 <br /> CA/-Iilf� <br /> Approved By <br /> Precision Enviro-Tech. — California D.O.H.S.Cert.#2387 <br /> Page 10 Of 21 <br />