Laserfiche WebLink
1 <br />' Battle Mountain Rcaourca, Inc. <br />I12 Permit ModiFcation <br />A laboratory testing program to geochemically ch~lracterize the waste <br />' rock from the San Luis Project was outlined in the app#oved permit. The <br />results from the testing program indicate that no acid production or leaching <br />of degradational quantities of any metals or other constituents from the waste <br />rock is expected to occur. <br />win discussion of the waste rock geocherftistry is condensed <br />r f m Section D.3.3.2 of the approved permr The wash rock tested for the <br />approved permlt mclud camp es rom each type of wasted rack. A list of the <br />' sample types and descriptions of the testing conducted v#hich pertain to the <br />backfill material aze given in Table D.3.3-1, Test resr~lts aze included in <br />' Appendix A of this submittal. <br />Battle Mountain geologists familiaz with the geologpc chazacteristics of <br />' the San Luis Project identified four separate and distin t waste rock types <br />present on site. Throe of the four types of waste rock sa>Inpled will occur in <br />' the pit backfill material. The fourth waste type, muds~ne and grcen clay <br />associated with faulting, will not occur in the backfill ma rial and will not be <br />discussed further in this document. The geologists selected core to be used <br /> in the geochemical testing program b on criteria estab shed by the Project <br /> Geoc emi a cntena lnc u ed selecting a sample at was considered <br /> resentative of the general rock type being tested, sel ling a sample that <br />' might represent a worst case a roc -tes , and'ensuring that <br /> a sufficient amount of material was available in a core acted to complete <br /> the testing. Battle Mountain geologisu fast reviewed th drill logs for drill <br /> holes which had been cored. They then selected potential grill holes with logs <br /> which met the criteria. The core from the selected hobs was examined to <br /> verify the logs. On ~ ~ ed that the core <br /> met the criteria, the core was shipped to the Project F.n i is laborato for <br />' development of a com osite sample. <br /> Laboratory personnel, in consultation with the ist, <br /> selected i ti r event samples for each of a rock types. The <br /> two different samples were selected in an attempt to el bo ex <br />' 'overall conditions and expec wor a case of the <br />an a Conglomerate and the pm gneiss the sam les ere lax used <br />orT'_co or differences, m rcating either a compo ition change or <br />ay 9, 1994 D_7 SK1C rtorect no <br />