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° 1455 McDowell Blvd North Ste D <br /> Sequoia PCVdunia CA 94954 <br /> t (707)792-186 <br /> { � } FAX(707)792 0142 <br /> ° www sequmalabs com <br /> URS Corp-Sacramento Project Arco Site 5469, Stockton CA P403099 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36605 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 04/06/04 17 16 <br /> Conventional Chemistry Parameters by APHA/EPA Methods -Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Souxe %REC RPD <br /> �Anqlytc Result I uutt Units Letel Result °'nREC Limits RPD Limit Notes <br /> Batch 4030513-General Preparation <br /> _Matrix Spike Dup(4030513-MSD1) Sourix P403_339-01 Prepared&Analyzed 03/18/04 <br /> Cheintcal Oxvgen Demand 1340000 Y 40000 119A 500000 630000 142 75-125 14 20 QMO1 <br /> Batch 4030687-General Preparation <br /> Blank(4030687-RLK1) Prepared&Analyzed 03/24/04 _ �_.....,_,.... <br /> Total Dissolved Solids ND 10000 11gfl <br /> Laboratory Control Sample(4030687-BSI) - _ _ Prepared&Analyzed 03/24/04 <br /> Total Dissolved Solids 654000 10000 ug/l 742000 88 80-120 <br /> Duplicate 4030687-DUP1 Source P401452-11 Prepared&Analyzed 03/24/04 <br /> Total Dissolved Solids 1050000 25000 ug/l 910000 14 35 <br /> 0 <br /> 16tim Analytical-Petaluma The i c vrilty in this report apply to the samples anaht ed in accordance itith the chair <br /> of cuvtodi docutnew Utiles s other x t se Blurt d i es tilts w e i epos ted nn a Mel 11 eight <br /> hasty Thrs anah ttcul t epoi t inim he t epi odut ed in m entirety <br /> Page 32 of 35 <br />