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~LABJ <br />CORE LABORATORIES <br />D U A L I T Y C O N T R O L R E S U L T S <br />Job Number: 970111 Date: 05/29/97 <br />CUSTOMER: Battle Mountain Gold Company PROJECT: 4aTR96 KINETIC TEST ATTN: Richard Neu <br />Test Method......-.: EPA 150.1 Batch .............: 20265 Analyst...: lmj <br />Method Description.: pH Reporting Limit...: 0.01 <br />Parameter........-.: pH Units .............: pH Units <br />OC Lab ID Reagent OC Result OC Result True Value Orig. Value Calc. Result Units Date/Time <br />ICV G970227A 4.00 4-00 100.0 X REC 04/02/97 1110 <br />MD 962987-22 6.99 6.93 0.9 RPD 04/02/97 1110 <br />CCV 960761 7.03 7.00 100.4 X REC 04/02/97 1110 <br />Test Method........: EPA 310.1 Batch .............: 20267 Analyst...: Lmj <br />Method Description.: Alkalinity Reporting Limit ...: 5 <br />Parameter....-.. -..: Alkalinity, ioteL as CaC03 Units .......... . ..: mg/L CeC03 <br />CC Lab 1D Reagent OC Result OC Result True Value Orig. Value Calc. Result Units Date/Time <br />NB 0 04/02/97 1110 <br />LCS G970213Z 92 100 92.0 X REL 04/02/97 1110 <br />MD 962987-22 16 16 0 ABS Diff. 04/02/97 1110 <br />Test Method..-.....: EPA 305.1 Batch ..... ........: 20268 Malyst...: lmj <br />Method DescripN on.: Acidity Reporting Limit...: 10 i <br />Parameter........-.: Acidity as CaC03 Units ....:........: mg/L CaC03 <br />GC Lab ID Reagent OC Result DC Result True Value Orig. Value Calc. Result Units Date/Tine <br />MB 0 04/02/97 1110 <br />MD 962987-22 0 0 0 ABS Diff. 04/02/97 1110 <br />Test Method........: EPA 375.2 Batch .............: 20300 Mal yst...: lmj <br />Method Oescript ion.: Sulfate (Automated MTB, AAI1) Reporting Limit...: 10 <br />Parameter......-.-.: Sulfate (504) Units ....:........: mg/L <br />OC Lab ID Reagent OC Result OC Result True Value <br />ICL G970113 48.30125 50.0 <br />ICB 1.58920 <br />MD 962771-137 2.87669 <br />MS 962771-137 G961003B 51.18590 50.000000 <br />CCV G961115C 119.74072 120 <br />CCB 1.87543 <br />ND 962908-177 4.23414 <br />MS 962908-177 G9610038 53.37906 50.000000 <br />CCV G961115C 117.59788 120 <br />CCB 1.23130 <br />LCS G970113 48.91998 50.0 <br />MD 962987-23 33.42401 <br />MS 962987-23 G961003B 84.60684 50.000000 <br />CCV G961115C 118.70222 120 <br />CCB 1.23130 <br />CCV G961115C 118-63728 120 <br />CCB 3.37699 <br />CCV G961115C 117.27289 120 <br />CCB 1.87543 <br />Page 13 <br />Orig. Value Cal c. Result Units Date/Tine <br /> 96.6 X REC 04/03/97 1404 <br /> 04/03/97 1406 <br />1.23130 1.64539 AB5 Diff- 04/03/97 1425 <br />1.23130 99.9 X REC 04/03/97 1428 <br /> 99.8 % REC 04/03/97 1435 <br /> 04/03/97 1437 <br />4.51971 0.28557 AB5 Diff. 04/03/97 1449 <br />4.51971 97.7 X REC 04/03/97 1452 <br /> 98.0 X REC 04/03/97 1506 <br /> 04/03/97 1508 <br /> 97.8 X REC 04/03/97 1513 <br />35.85866 2.43465 ABS Diff. 04/03/97 1530 <br />35.85866 97.5 X REC 04/03/97 1532 <br /> 98.9 X REC 04/03/97 1537 <br /> 04/03/97 1540 <br /> 98-9 X REC 04/03/97 1608 <br /> 04/03/97 1611 <br /> 97.7 X REL 04/03/97 1625 <br />04/03/97 1628 <br />m..~wra,.w. ~.o-...a~w ~..~u., N. ~ a, orr.a w~.~o-iP w m...+.wor+m w rater w.m..,.s,... w.~v.~w ~.. ~..,~ w e... m.o. m..r..w...n.. ovo.>...~.. w. <br />..v~~.v...n.~.a.~.a~.rm.b..~.r.m.ia...b..~......~o....wo-,o~.m...o-..>.,ara a..,,.o...,a.4..,m.~,...,... ~o n.mm~.w~'°~ .nu~r.re <br />nr a. x m+o- n~ ~r vm.+r -+s...e o- ~w.~n.~.n.w..w~ ~ W.e o-....e ~ ro- w~+N000r mr,sa r.r,oi a ~ooac. a.rcY o- n on. wew o im.~ ma.+em. rso-.~ <br />