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Cpg~~l CORE LABCIRATORIES Q U A L I T Y C O N T R O L R E S U L T S Job Number: 962987 Date: 05/29/97 CUSTOMER: Battle Mountain Gold Conpany PROJECT: 30TR96 HCT ATTN: Rich~rd Neu Tes[ Method........: EPA 150.7 Batch .............: 20388 Analyst..:: 'mjf Method Descrip[ion.: pH Reporting Limit...: D.O1 Parameter..........: pN Units .............: pH Units OC Lab ID Reagent OC Result OC Result True Value Orig. Value Calc. Result Nnits Date/Time ICV G970227A 3.98 4.00 99.5 X REC 04/07/97 0945 MD 962771-136 5.86 5.84 0.3 RPD 04/07/97 0945 CCV 960761 6.96 7.00 99.4 X REC 04/07/97 0945 MD 962908-177 6.37 6.35 0.3 RPD 04/07/97 0945 CCV 960761 6.97 7.00 99.6 X REC 04/07/97 0945 MD 962908-186 6.16 6.97 12.3 RPD 04/07/97 0945 CCV 960761 6.99 7.00 99.9 X REC 04/07/97 0945 Test Method........: EPA 370.1 Batch .............: 20390 Analyst...:~mjf Method Description.: Alkalinity Reporting Limit...: 5 Parameter..........: Alkalinity, Totat as CaC03 Units .............: mg/L CaC03 OL Lab ID Reagent OL Result OC Result True Value Orig. Value Lalc, Result Nni is Date/Time M8 0 04/07/97 0945 LCS G970213Z 92 100 92.0 X REC 04/07/97 0945 MD 962777-136 0 0 0 AggS Diff. 04/07/97 0945 MD 962908-177 8 8 0 ABS Diff. 04/07/97 0945 LCS G970213Z 90 100 90.0 X REC 04/07/97 0945 ND 962908-186 6 8 Z A85 Diff. 04/07/97 0945 Test Method,....,..: EPA .305.7 Batch .............: 20393 Adel yst:,:_:~: mjf Nethad Description.: Acidity Reporting Limit...: 70 Parameter.......,..: Acidity as CaC03 Units .............: mg/L CeC03 ~ ~~~~ ~ ~~~~ OC Lab ID Reagent OL Result OC Result True Value Orig. Value Calc, Resul[ Units Date/Time MB 0 04/07/97 0945 MD 962771-136 0 0 0 A S Diff. 04/07/97 0945 MD 962908-177 0 0 0 A~S Diff. 04/07/97 0945 ND 962908-186 0 0 0 A s Diff. 04/07/97 0945 Test Method.....,..: EPA 720, 1~ Batch .............: 20477 ~~Arielyet.:; p'~lmj Method Description.: ~Speci f.ic Corductence iJ 25 degrees C Reporting Limit...: 1 ~ .. Parameter..,....,..: specific Conductivity 8 25 degrees C Units .............: umhos/aa ~ ~~.~. OC Lab ID Reagent OC Result OC Result True Value Orig. Value Calc, Result Units Date/Time ICB 0 04/08/97 1320 LCS 970139 976 997 97.9 X REC 04/08/97 1320 MD 962771-141 17 17 0.0 RPD 04/08/97 1320 CCV G970312A 1366 1410 96.9 X REC 04/08/97 1320 CCB 0 04/08/97 1320 MD 970111-11 167 168 0.6 RPD 04/08/97 1320 CCV G970312A 1371 1410 97.2 X REC 04/08/97 1320 LCB 0 04/08/97 1320 LCS 970139 989 997 99.2 X REC 04/08/97 1320 MD 970893-3 120 121 0.8 RPD 04/08/97 1320 CCV G970312A 1378 1410 97.7 X REC 04/08/97 1320 CCB 0 04/08/97 7320 Page 60 m.,.ma ~.,,m oo-~.w a .,~.o-.i.~ae,a.,~...a ~„ ~o-.,.a-~... u„a,a.o., ~~o-mn,~..c.«~.,~.wn.e a. a. c.. is .~..,...e.....~.~„w..W~.,. ~~. mo, w e..~ m.a. m.,..,iu,.w eo.o-.> w.v.. ~,. m~~~o ~n~WC~r nET'~~Wfenl~bi.ivu Cm l~[o aiw bN.~.m.~,am wvr.^M1O.m..nM'n.uP,ua mp~a~an,~p W„y,rl itlYn. vrro~ioM P4~T~I~Yi pc`.II~M .ya.a.. or o-oo-...~.n.vw.•~..+o-rm.,.e.,.na,..l.w..n.w boo-~....eo,~.a wo-~~o-.m,..o~au..+m.,a~rn~u,.wmm.~.m.o. w.rwn r.me mo-+dcwu~o+.