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CORE LABOR~~TORIES <br />D U A L I T Y C O N T R O L R E P O R T <br />03/24/95 <br />dOB NUMBER: 941801 CUSTOMER: HENDRICKS MINING CO, INC. ATTN: THOMAS HENDRIC (S <br />ANALYSIS DUPLICATES REFERENCE STANDARDS MATRI% SPIKES <br />ANALYSIS ANALYSIS ANALYSIS ANALYZED DUPLICATE RPD or TRUE PERCENT ORIGi NAL SPIKE PERCENT <br />TYPE SUB-TYPE I.D.VALUE (A)VALUE (B)A-BI)VALUE RECOVERY VALUE ADDED RECOVERY <br />PARAMETER:Acid Neutralizing Potential DATE/TIME ANALYZED:07/28/94 18:05 OC BATCH NUMBER:303381 <br />REPORTING LIMIT/0 F: 0.5 UNI TS:TOns CaC03/Kt METHOD REFERENCE :3.2.3 (15) TECHNI CIAN:KDS <br />BLANK MB 940728 0.1 <br />DUPLICATE MD 941706-10 35.2 31.8 2 <br />PARAMETER:Nitrogen, Nitrate (Filt.) DATE/TIME ANALYZED:07/24/94 10:30 OC BATCH NUMBER:303385 <br />REPORTING LIMIT/0 F: 0.5 UNITS:mg/L (as N) METHOD REFERENCE :353.2 (1) TECHNICIAN:DME <br />BLANK ICB 940729 0.5 <br />BLANK CCB 940729 0.1 <br />BLANK EB 940727 0.1 <br />STANDARD ICV/LCS G931013B 1.0 1.0 100 <br />STANDARD CCV 53.0 3.0 3.0 100 <br />SPIKE MS 941801-3 1.4 0.3 1.0 110 <br />DUPLICATE MD 941801-3 0.3 0.3 0.0 <br />DUPLICATE ED 941801-3 0.3 0.4 0.1 <br />PARAMETER:Nitrogen, Nitrite (Fitt.) DATE/TIME ANALYZED:07/29/94 10:30 OC BATCH NUMBER:303392 <br />REPORTING LIMIT/DF: 0.01 UN[TS:mg/L (as N) METHOD REFERENCE :353.2 (1) 7ECHNIC[AN:DME <br />BLANK ICB 940729 c0.01 <br />BLANK CCB 940729 c0.01 <br />BLANK EB 940727 c0.01 <br />STANDARD ICV/LCS G931013C 0.98 1.00 98 <br />STANDARD CLV 52.00 2.00 2.00 100 <br />SP]KE MS 941801-1 1.08 0.03 5.00 105 <br />DUPLICATE MD 941801-3 0.03 0.02 0.05 <br />DUPLICATE ED 941801-3 0.03 0.03 0.00 <br />PARAMETER: Fl uoride (Fitt.) GATE/TINE ANALYZED:08/01/94 13:05 OC BATCH NUMBER:304118 <br />REPORTING LIMIT/D F: 0.1 UNITS:mg/L METHOD REFERENCE :340.3 (1) TECHNICIAN:SLS <br />BLANK ICB 940801 0.1 <br />BLANK CCB 940801 0.1 <br />BLANK EB-DI 940727 0.1 <br />STANDARD ICV/LCS G9403178 1.0 5.0 100 <br />STANDARD CCV 50.8 0.8 0.8 500 <br />SPIKE MS 941696-5 0.9 0.4 0.5 100 <br />DUPLICATE MD 941696-5 0.4 0.4 0.0 <br />DUPLICATE ED 941801-3 0.8 0.8 0 <br />PARAMETER:SUlfate Sulfur (as S) DATE/TIME ANALYZED :08/05/94 08:00 OC BATCH NUMBER:304573 <br />REPORT iNG LSM ITJDF: 0.05 UN ITS:X METHOD REFERENCE :D 2492-90 (14) TECHNI CIAN:RPK <br />BLANK MB 940805 <0.01 <br />DUPLICATE MD 941869-2 <0.01 c0.01 NC <br />DUPLICATE MD 941869-5 <0.01 c0.01 NC <br />10703 East Bethany Drive <br />Aurora, CO 80014 <br />303) 751-1780 <br />PAGE:4 <br />me apogees. oo~mp.: pr ~pmm,alal~p.: [opu~pee p rmb r.pon are om.o wpp oeaeprpupe: p.e maler.al a„ope.a ov lnb o~ppr ip, .ppa. eml,:~+e ape mm~ee~um aaa m.e reppn nn oae. mane me were,nm~pe. pr opm~ppe eapraxep nqe~ <br />e.m me oen WeAme l of cp,. LaMreroriu wr, Leeoraror~ea. nowe.er ssb~ms ep ~eaop s. ~Ipr a~a ma.es pp ..~rpmr p. ,.preeegn~pp.. a.geae pi impliep ee Ip l . p,mm~.nr prpMr ppNanp~. pi p pl,umepa pr epy pn. oa: coal p. <br />plnbr miners 1. prryeM~Weu pr .a np in cp nnen~on wilp we.[e su[ aru ~ausM Or rel~W Upp~pior any nebon wpalsobvar lee n(me Nail nol Ca rep~p]ccaJ arcbq ~n pi enrn bly.n pool Na vne an epprdei rl Cp~e LaMrnpn ee