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s1455 McDowell Blvd,North Ste D <br /> SequoiaPetaluma CA 94954 <br /> r`�tla lvtib: (707)7921365 <br /> CAX(707)792 0342 <br /> www sequot slabs i om <br /> URS Corp-Sacramento Project Arco Site 5469 Stockton CA P403099 <br /> 2870 Gateway Oaks Dnve Suite 300 Project Number WR36605 Reported <br /> Sacramento CA 95833 Project'Manager Jay Johnson 04/06/04 17 16 <br /> Anions by EPA Method 300 0- Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Sourtie %REC RPD <br /> Ana]yte Result I inlet Units Level Result /1REC Limit" RPC) I inut Notes <br /> Batch 4030256-General Preparation <br /> Matrix Spike(4030256-MS2) Sourt-e P402446-15 Prepared&Ana] led 03/11/04 <br /> Nitrate as NO3 254tt1,00 59000 ugft 2220000 ND 114 80-120 <br /> Sulfate as SO4 3200000 100000 500000 2600000 120 80-120 <br /> Matrix Spike Dup(4030256-MSD1) Source P402446-15 Prepared&Analy7ed 03110/04 <br /> Nitrate as NO3 2390000 89000 iig/l 2220000 ND 108 80-120 04 20 <br /> Sulfate as SO4 3204000 100000 500000 2600000 120 80-120 06 20 <br /> Matrix Spike Dup(4030256-MSD2) Source P402446-15 Prepared&Analyzed 03/11/04 <br /> Nitrate as NO3 2520000 89000 ugll 2220000 ND 114 W-120 0 8 20 <br /> Sulfate as SO4 3180000 100000 " 500000 2600000 116 80-120 0 6 20 <br /> Batch 4030665-General Preparation <br /> Wank(4030665-BLKI) Prepared&Analyzed 03/23/04 <br /> ate as NO3 ND 890 ugll <br /> ulfatc as SO4 ND 1000 " <br /> Laboratory Control Sample(4030665-BSI) Prepared&Analyu.d 03/23/04 <br /> Nitrate as NO3 43900 890 ugll 44300 99 90-110 <br /> Sulfate as SO4 10000 1000 10000 100 90-110 <br /> Matrix Spike(4030665-;VISI) Source P403420-10 Prepared&Analyzed 03/23/04 <br /> Nitrate as NO3 204000 4400 ug/l. 111000 92000 101 W-120 <br /> Sulfate as SO4 46400 5000 25000 23000 94 80-120 <br /> Matrix Spike Dup(4030665-MSD1) Source P403420-10 Prepared&Analyzed 03/23104_ <br /> Nitrate as NO3 207000 4400 ugA 111000 92000 104 80-120 1 20 <br /> Sulfate as SO4 47200 5000 .. 25000 23000 97 80-120 2 20 <br /> �uoia Analytical-Petaluma rhe i esulti in this i epor t upph to the sample,crnuh:ed in attar dance nah the chats <br /> oft intodl document Unless olheiutve stated results are repaired on a wet Height <br /> basis Tlrty anatyircat report 17titst he iepiodrtced tir itv enirreti <br /> Page 34 of 35 <br />