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404 N Wlget Lane - <br /> Sequoia Walnut Creek.X960 <br /> IDFAX(925)986-%73 <br /> q„r Analytical www� corn <br /> er Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-2033 Reported <br /> Dubhn CA,94568 Project Manager Deanna L Harding 02-Jan-01 07 36 <br /> Dissolved Metals by EPA 200 Series Methods- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunn Units Level Result °/aREC Lutists RPD Lutist Notes <br /> Batch OL18019-200.7 <br /> Blank(OL18019-BLKI) Prepared 18-Dec-00 Analyzed 27-Dec-00 <br /> Cadmium ND 0 010 mg/I <br /> Chromium ND 00100 " <br /> Lead ND 00500 " <br /> Nickel ND 00100 " <br /> Zmc ND 00100 " <br /> LCS(OL18019-BSI) Prepared 18-Dec-00 Analyzed 27-Dec-00 <br /> Cadmium 0 949 0 010 mg/l 100 949 80-120 <br /> Chromium 0 948 00100 too 948 80-120 <br /> Lead 0 963 00500 100 963 80-120 <br /> Nickel 0 957 00100 100 957 80-120 <br /> Zinc 103 00100 100 103 80-120 <br /> Dup (OL18019-B5D1) Prepared 18-Dec-00 Analyzed 27-Dec-00 <br /> 0 995 0 010 mg/l 100 995 80-120 473 20 <br /> C hrommm 0 975 00100 " 100 975 80-120 281 20 <br /> head 0 995 00500 100 995 80-120 327 20 <br /> Nickel 0 995 00100 100 995 80-120 399 20 <br /> Zine 104 00100 100 104 80-120 0 966 20 <br /> Matrix Spike(OL18019-MS1) Source W012178-03 Prepared 18-Dec-00 Analyzed 27-Dec-00 <br /> Cadmium 0 995 0 010 m9/1 100 ND 995 80-120 <br /> Chromium 0 964 00100 100 00292 935 80-120 <br /> Lead 0 983 00500 100 ND 983 80-120 <br /> Nickel 100 00100 100 ND 100 80-120 <br /> Zoic 108 00100 100 00393 104 80-120 <br /> Matrix Spite Dup (OL18019-MSD1) Source W012178-03 Prepared 18-Dec-00 Analyzed 27-Dec-00 <br /> Cadmium 0 971 0 010 mg/1 100 ND 97 l 80-120 244 20 <br /> Chromium 0 962 00100 100 00292 933 80-120 0208 20 <br /> Lead 0 962 00500 100 ND 962 80-120 216 20 <br /> Nickel 101 00100 100 ND 101 80-120 0 995 20 <br /> Zinc 105 00100 t 00 00393 101 80-120 282 20 <br /> Sequoia Analytical-Walnut Creek The results in dus report gpply to die samples analysed in accordmrce widh the chamn of <br />. custody document Taus analytical report must be reproduced in its entirely <br /> Page 10 of 16 <br />