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1 <br />~ ~jLAB <br />CORE LABORATORIES <br />' 0 UAL 1 T Y C O N T R O L R E S U L T S <br />Job Number: 971377 Date: 06/30/97 <br />' CUSTOMER: Greystone PROJECT: COSTILLA CO LANDFILL ATTN: Niek Mathis <br />OC Type Description Reag. Code Lab ID Dilution Factor Date Time <br />~I LCS I Laboratory control Sample <br />Parameter/Test Description OC Result OC Result <br />rdrin 29.51 <br />0970423A ~ ~ 0.01 ~ 06/06/97 2345 <br />Rep. Limit True Value Orig. Value Celc. Result Units F <br />0.006 24.80000 119.0 X REC <br />' LCD Laboratory Control Sample Duplicate O970423A 0.01 06/07/97 OD14 <br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Calt. Result Units F <br />ldrin 14.69 14.74 0.004 12.38000 118.7 X REc <br /> 0.3 RPD <br />gamma-BNC (Lindane) 15.93 13.50 0.004 12.42000 128.3 X REC <br /> 16.5 RPD 2 <br />4,4'-DDT 34.69 32.13 0.012 25.08000 138.3 X REC <br /> 7.7 RPD <br />ieldrin 27.68 25.63 0.002 25.09000 110.3 X REC <br /> 7.7 RPD <br />Endrin 28.86 29.51 0.006 24.80000 116.4 X REC <br /> 2.2 RPD <br />_I Test Method........: EPA 608 Batch........: 22433 Analyst ...: smc <br />Method Description.: Pesticides/PCBs (Organochlori ne) Units........: ug/L <br />MB Method Bl enk 2936 06/02/97 1429 <br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Ca lc. Result Units F <br />Aroclor 1016 ND 0.05 <br />~AAroclor 1221 ND 0.05 <br />Aroclor 1232 ND 0.05 <br />~AAroclor 1242 ND 0.05 <br />Aroelor 1248 ND 0.05 <br />Aroclor 1254 ND 0.05 <br />~roclor 1260 ND 0.05 <br /> Test Method........: SW-846 8150 Batch....... .: 22451 Analyst -..: snr <br />' Method Description.: Herbicides Units....... .: ug/L <br />MB ~ Method BLank <br />Parameter/Test Description <br />2, 4•D <br />2,4-DB (Butoxon) <br />'2,4,5-T <br />2,4,5-TP (Silver) <br />Delapon <br />Dicambe <br />ichloroprop <br /> 2949 <br />DC Result DL Result Rep. Limit <br />ND 7.2 <br />ND 0.91 <br />ND 0.2D <br />ND 0.17 <br />ND 5.8 <br />ND 0.27 <br />ND 0.65 <br /> Page 33 <br />06/06/97 1350 <br />True Value Orig. Value Calc. Result Units F <br /> <br /> <br /> <br />