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75 SutFle Street Durango CO 81301 <br />L A B O R A T O R I E S <br />an affiliate of aqualab inc. <br />970-247-4220 Fax 247-4227 <br />Attn:JIM HENDRICKS <br />OAKRIDGE ENERGY INC. <br />P.O. BOX 5280 <br />DURANGO CO 81302 <br />Sample ID WELL 94-1 <br />Date Login: 06/02/98 <br />Date Recd: 06/01/98 <br />SAMPLE COLLECTION: <br />Date/Time/By:06/O1/98 1330 J HENDRICK <br />Location: <br />CDS Lab ,~:A98-135852 ANALYTICAL REPORT Report Date 06/25/98 <br />Testname Result Units Method DL MCL <br />---------------------------- <br />Ammonia as Nitrogen ------ --------- <br />1.60 ------- <br />mg/L ----------- <br />EPA350.2 ------------------ <br />0.10 <br />Arsenic, dissolved < 0.001 mg/L SM3114 B 0.001 <br />Bicarbonate as CaC03 465 mg/L SM2320 10 <br />Carbonate as CaC03 60 mg/L SM2320 <br />cium, dissolved 72.0 mg/L EPA200.7 0.5 <br />mium, dissolved < 0.005 mg/L SM3113B 0.005 <br />Chloride 11 mg/L SM45000L 10 <br />Depth of Well, Field Data 22.0 feet <br />Conductivity, Client Data 1130 µS/cm <br />Iron, dissolved 1.5 mg/L EPA200.7 0.2 <br />Mercury < 0.001 mg/L EPA245.1** 0.001 <br />Magnesium, dissolved 56.9 mg/L EPA200.7 0.5 <br />Manganese, dissolved < 0.2 mg/L EPA200.7 0.2 <br />Sodium, dissolved 133 mg/L EPA200.7 0.5 <br />Nitrate-N NT mg/L EPA353.2 0.05 <br />Nitrite-N NT mg/L EPA353.2 0.05 <br />Nitrate/Nitrite-N 0.10 mg/L EPA353.2 0.02 10.00 <br />Phosphate, Total 0.34 mg/L EPA365.3 0.01 <br />pH, Field Data 7.40 Units <br />Selenium, dissolved < 0.001 mg/L SM3114B 0.001 <br />Sulfate 215 mg/L SM4500SO4 10 <br />Total Dissolved Solids 880 mg/L EPA160.1 25 <br />Temperature, Field Data 19.0 'C <br />Zinc, dissolved < 0.25 mg/L EPA200.7 0.25 <br />~/~ <br />Approved By: Checked By:~ <br />