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1 ~~~ <br />CORE LABORATORIES <br />I g UAL I T T C O N T R O L R E S U L T S <br />Job Nuober: 971377 Date: 06/30/97 <br />I LLSTp1ER: Greystone PROJECT: COSTILLA CO LANDFILL ATTN; Nick Mathis <br /> <br /> <br />Test Method........: EPA 160.1 Batch .............: 22201 Mel yst...: mjf <br />Method Description.; Solids, Tote( Dissolved (TDS) Reporting Limit...: 10 <br />Parameter..........: Solids, Total Dissolved (TDS) Units .............: mg/L <br /> OL Lab ID Reagan[ OC Result DC Result True Value Orig. Value Calc. ResulC Units Dete/Time <br /> MB 0 05/30!97 1100 <br /> LLS G960724A 508 500 101.6 X REC 05/30/97 1100 <br /> ND 971377.2 169 185 9.0 RPD 05/30/97 1100 <br /> <br /> <br />lest Method........: EPA 270.2 Batch .............: 22227 Analyst...: lmt <br />Method Description.: Selenium (GFM) Reporting Limit...: 0.005 <br />Parameter..........: Selenium (Se) Units .............: ng/L <br />' OL Lab ID Reagent <br />ICV 9706028 <br />' LLB 06037 <br />MD 971377-1 <br />PDS 971377-2 970131H <br />SD 971377-3 <br />CCV 961202[ <br />CCB 06037 <br />MB 0602 <br />LLS 9704292 <br />CCV 961202[ <br />CLB 06037 <br />MD 971336-1 <br />MS 971414-1 970320E <br />POS 971414-1 970131H <br />SD 971415-1 <br />' CLV 9612020 <br />CCB 06037 <br /> <br />OC Result OC Result True Value Orig. Yalue Ca lc. Result Units Date/Time <br />0.04288 0.0400 107.2 X REC 06/03/97 0901 <br />-0.00046 06/03/97 0908 <br />0.00080 0.00035 0.00045 A85 Diff. 06/03/97 0921 <br />0.02046 0.020000 0.00096 97.5 X REC 06/03/97 0929 <br />-0.00017 -0.00011 X Diff. 06/03/97 0936 <br />0.05361 0.050 107.2 X REC 06/03/97 0950 <br />-0.00024 06/03/97 0954 <br />0.00007 Obf03/97 1009 <br />0.05065 0.050000 101.3 X REC 06/03/97 1013 <br />0.04742 0.050 94.8 X REC 06/03/97 1044 <br />0.00036 06/03/97 1048 <br />0.00799 0.00681 0.00118 ABS Diff. 06/03/97 1056 <br />0.00512 0.004000 0.00173 84.8 X REC 06/03/97 1103 <br />0.01757 0.020000 0.00173 79.2 X REC 06/03/97 1107 <br />0.00040 0.00198 X Diff. 06/03/97 1110 <br />0.04871 0.050 97.4 X REC 06/03/97 1114 <br />0.00028 06/03!97 1118 <br />Test Method........: EPA 239.2 ~ Batch .............: 22268 Analyst...: lmt <br />Method Description.: Leed (GFM) Reporting Limit...: 0.002 <br />Parameter..........: Lead (Pb) Units .............: aKJlL <br /> OC Lab ID Reagent OL Result <br />1 ICV 9706028 0.04309 <br /> ICB 06037 0.00029 <br /> CCV 961202[ 0.05405 <br /> CCB 06037 0.00056 <br />' CCV 961202[ 0.05305 <br /> CCB 06037 0.00122 <br /> CCV 961202[ 0.05282 <br /> CCB 06037 0.00072 <br />' ' MD 971377-1 0.00033 <br /> PDS 971377-2 970131H 0.01992 <br /> CCV 961202[ 0.05436 <br />CCB 06037 0.00004 <br />1 <br />OC Result True Value Orig. Value Cal c. Result Units Date/Time <br />0.0400 107.7 X REC 06/03!97 1214 <br /> 06/03/97 1220 <br />0.050 108.1 X REC 06/03/97 1330 <br /> 06/03/97 1337 <br />0.050 106.1 X REC 06/03/97 1426 <br /> 06/03/97 1432 <br />0.050 105.6 X REC 06/03/97 1541 <br /> 06/03/97 1547 <br />0.00031 0.00002 ABS Diff. 06/03/97 1631 <br />0.020000 0.00054 96.9 X REC 06/03!97 1643 <br />0.050 108.7 X REC 06/03/97 1655 <br />06/03/97 1702 <br />Page 25 <br /> <br />