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',',~ Western Atlas International CORE LABORATORIES D U A L I T Y C O N T R O L R E P O R T 01/13/94 JOB NUMBER: 932410 CUSTOMER: BATTLE MOUNTAIN RESOURCES, INC. ATTN: ALANA SCOTT ANALYSIS DUPLICATES REFERENCE STANDARDS MATRIK SPIKES ANALYSIS ANALYSIS ANALYSIS ANALYZED DUPLICATE RPD or TRUE PERCENT ORIGINAL SPIKE PERCENT TYPE SUBTYPE I.D. VALUE (A) VALUE (B) (~A-B~) VALUE RECOVERY VALUE ADDED RECOVERY PARAMETER:Carbon, Total Organic (TOL) DATE/TIME ANALYZED:12/15/93 09:28 OL BATCH NUMBER:285091 REPORTING LIMIT/0 F: 2 UNITS:mg/L METHOD REFERENCE :415.1 (1) TECHNICIAN:KJA BLANK MB 121593 <2 STANDARD ICY/LCS 49312158 10 10 100 STANDARD CCV C930707C 18 18 100 SPIKE MS 932396-1 22 2 20 100 DUPLICATE MD 932396-1 2 2 0 PARAMETER:Ch bride (Unfilt.) DATE/TINE ANALYZED:12/16/93 09:10 OC BATCH NUMBER:285124 REPORTING LIMIT/D F: 0.5 UNITS:mg/L METNW REFERENCE :325.2 (1) TECHNICfAN:DME BLANK ICB 931216 <0.5 BLANK CCB 931216 <0.5 STANDARD ICV/LCS G930930A 53.5 50.0 107 STANDARD CCV 5120 123 120 102 SPIKE MS 932396-48 59.2 3.6 50.0 111 DUPLICATE MD 932396-48 3.6 3.8 5 PARAMETER:Cyanide, U.A.D. (Unfilt.) DATE/TIME ANALYZED :12/16/93 06:45 OC BATCH NUMBER:285207 REPORTING LIMIT/D F: 0.02 UNITS:mg/L METHOD REFERENCE :4500-CN I (3) TECHNICfAN:SLS BLANK ICB SO <0.02 BLANK CCB SO <0.02 BLANK MB 931216 <0.02 STANDARD ICV/LCS L9311128 0.15 0.17 88 STANDARD DIST. CHK. 49308208 0.21 0.25 84 '~, STANDARD CCV 50.30 0.30 0.30 100 !SPIKE MS 932407-1 0.28 ~ 0.18 0.13 77 DUPLICATE MD 932407-1 0.18 0.17 6 PARAME TER:Lyanide, total (Unfilt.) DATE/TIME ANALYZED: 12/15/93 09:30 OL BATCH NUMBER:285210 REPORTING LIMIT/DF: 0.02 UNITS:mg/L METHOD REFERENCE :335.2 (1) TECHN ICIAN:CJS BLANK ICB 50 <0.02 BLANK CCB SO <0.02 BLANK MB 931215 <0.02 STANDARD ICV/LCS 49311128 0.22 0.22 100 STANDARD DIST. CHK. 69308208 0.23 0.25 92 STANDARD CCV 50.30 0.28 0.30 93 SPIKE MS 932433-1 0.22 <0.01 0.25 88 DUPLICATE MD 932433-1 <0.02 <0.02 NC PARAMETER:Nitrate + Nitrite (es N) [Unfitt.] DATE/TIME ANALYZED: 12/21/93 08:30 OC~BATCN NUMBER:285452 REPORTING LIM11/DF: 0.05 UNITS:mg/L (as N) METHOD REFERENCE :353.2 (1) TECNNICIAN:OME BLANK ICB 931221 <0.05 BLANK CCB 931221 <0.05 STANDARD ICV/LCS 49303288 0.55 0.50 110 10703 Eas[ Bethany Drive Aurora, CO 80014 (303) 751-1780 PAGE:24 iN ~NM1LI.tpl4mw MaMPf OwYNi nlA rgpINNYU UIVn myrypT,~N mplW Wpm~ap IN CImMMTI<~OUm iN anlpMYluY T~maII N{a1w~m~Y f1+~rypp~pgs O(PYm~OA~q! aw ey e.n waawn w Caa l~NabNS can lamnpN, N.n. uW N a,om,Mer w n.y, N.an.my a nwnwNims e.omr w+nws n m a~ vam.n vmr R~rMS. a aaiur~u a ~' el pe. mtl a wlw+.wa. vaown...Ya uNm ~.Nem.~m we am ~nascv~w.aumiv uy mam wrntw<r rm mam•N~mn ee mvmm~m nN w~ewr. •*oniN per ww~a can ulvb~.