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<br />CORE LABORATORIES
<br />L A B O R A T O R Y T E S T R E S U L T S
<br />Job Number: 981513 Date: 06!26/98
<br />CUSTOMER: Greystone PROJECT: 484-03 COSTILLA CO. ATTN: Nick Mathis
<br />Customer Sanple ID: 484-MWS Laboratory Sample ID: 981513-2
<br />Date Sampled......: 06/04/1998 Date Received.......: 06/04/1998
<br />Time Sampled......: 11:30 Time Received.......: 15:00
<br />Sample Matrix.....: Water
<br />TEST METH PARAMETER/TEST DESCRIPTION SAMPLE RESULT REPORTING L!M{7 UNITS DATE TECH
<br />EPA 325.2 Chloride, Filt. 2.8 0.5 mg/L 06/17/98 tlp
<br />600/8-78-017 M Coliform, Total, Unfilt. <1 1 p/100m1 06/04/98 dme
<br />EPA 340.2 Fluoride (F), Filt. 0.2 0.1 mg/L 06/19/98 mjf
<br />EPA 353.2 Nitrate + Nitrite as N, Unfilt. 2.58 0.05 mg/L 06/09198 tlp
<br />EPA 160.1 Solids, Total Dissolved (TDS), Fitt. 200 10 mg/L 06/08/98 tlp
<br />EPA 150.1 pH, Filt. 7.08 0.01 pN Units 06/04/98 dne
<br />EPA 200.7 Barium (Ba), Diss. 0.070 0.001 mg/L 06/24/98 lmt
<br />EPA 200.7 Iron (Fe), Diss. <0.03 0.03 mg/L 06124198 lmt
<br />EPA 239.2 Lead (Pb), Diss. <0-002 0.002 mg/L 06/24/98 cjo
<br />EPA 200.7 Manganese (Mn), Diss. <0.001 0.001 mg/L 06/24/98 lmt
<br />EPA 200.7 Zinc (Zn), Diss. <0.005 0.005 mg/L 06/24/98 Lmt
<br />EPA 608 Extraction (Sep. Funnel) Chlor. Pest
<br /> Sepa ratory Funnel Liq/Liq Extraction CoaQlete 06/11/98 jcm
<br />SW-846 35108 Extraction (Sep, Funnel) Nerb.
<br /> Sepa ratory Funnel Liq/Liq Extraction Coep Lete 06108/98 maz
<br />SW-846 8150 Herbicides
<br /> 2, 4-D ND 1.2 ug/L 06/25!98 smc
<br /> 2,4-DB (Butoxon) ND 0.91 ug/L 06/25/98 smc
<br /> 2,4,5-T ND 0.20 ug/L Ob{25198 smc
<br /> 2,4,5-TP (Silvex) ND 0.17 ug/L 06/25/98 smc
<br /> Dal apon ND 5.8 ug/L 06/25/98 smc
<br /> Dicanba ND 0.27 ug/L 06!25198 smc
<br /> Dichloroprop ND 0.65 ug/L 06/25/98 smc
<br /> Dinoseb (DNBP) ND 0.07 ug/L 06/25)98 smc
<br /> MCPA ND 250 u9/L 06/25/98 smc
<br /> MCPP ND 200 ug/L 06/25/98 smc
<br />EPA 608 PesticidesfPCBS (Organochlorine)
<br /> Aldrin ND 0.004 ug/L 06/19/98 smc
<br /> alpha-8HC ND 0.003 ug/L 06/19/98 smc
<br /> beta-BHC ND 0.006 ug/L 06/19/98 smc
<br /> delta-BHC ND 0.009 ug/L 06/19198 smc
<br /> gamma-BHC (Lirdane) NO 0.004 ug/L 06/19/98 smc
<br /> Chlordane ND 0.014 ug/L 06/19/98 smc
<br /> 4,4'-DDD ND 0.011 ug/L 06/19/98 smc
<br />Page 3
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