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• Curtis &Tompkins, Ltd. <br /> LABORATORY NUMBER : 104953 . 2 DATE RECEIVED: 08 / 23 / 91 <br /> CLIENT: TREADWELL & ROLLO DATE ANALYZED: 08 / 25 , 29 / 91 <br /> PROJECT ID : 1107A DATE REPORTED: 09 / 06 / 91 <br /> LOCATION: MANTECA <br /> SAMPLE ID: W- 2 Sou RCE'• <br /> Title 26 Metals in Aqueous Solutions <br /> METAL RESULT REPORTING METHOD <br /> LIMIT <br /> ug /L ug /L <br /> Antimony 232 60 . 0 EPA 6010 <br /> Arsenic 18 . 9 5 . 0 EPA 7060 <br /> Barium 826 10 . 0 EPA 6010 <br /> Beryllium ND 2 . 0 EPA 6010 <br /> Cadmium 18 . 1 5 . 0 EPA 6010 <br /> Chromium ( total ) 160 10 . 0 EPA 6010 <br /> Cobalt 69 . 0 18 . 0 EPA 6010 <br /> Copper 119 10 . 0 EPA 6010 <br /> Lead 22 . 5 3 . 0 EPA 7420 <br /> Mercury ND 0 . 2 EPA 7470 <br /> Molvbdenum ND 14 . 0 EPA 6010 <br /> Nickel 181 32 . 0 EPA 6010 <br /> Selenium ND 5 . 0 EPA 7740 <br /> Silver 13 . 9 10 . 0 EPA 6010 <br /> Thallium ND 5 . 0 EPA 7841 <br /> Vanadium 283 10 . 0 EPA 6010 <br /> Zinc 260 20 . 0 EPA 6010 <br /> ND = Not detected at or above reporting limit . <br /> QA/QC SUMMARY <br /> RPD �---------- <br /> To RECOVERY,% RPD ,-7a RECOVERY,% <br /> Antimony 5 93 Mercury 6 99 <br /> Arsenic 3 100 Molybdenum 7 107 <br /> Barium <1 99 Nickel 4 95 <br /> Beryllium 3 101 Selenium 7 114 <br /> Cadmium 8 101 Silver 7 97 <br /> Chromium 5 98 Thallium <1 106 <br /> Cobalt 11 100 Vanadium 4 95 <br /> Copper <1 98 Zinc 11 100 <br /> Lead <1 119 <br />