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Appendix D <br /> 0 Knight Piesold <br /> CONSULTING <br /> January 14, 2021 Knight Piesold and Co. <br /> 1999 Broadway, Suite 900 <br /> Denver, CO 80202-5706 <br /> Messrs. Jeff Carter and Harold Lesser T+1 303 629 8788 <br /> Salisbury Gladstone LLC E denver@knightpiesold.com <br /> 15954 Jackson Ck Parkway B281 www.knightpiesold.com <br /> Monument, Colorado 80132 <br /> Project No.: DV101-00812/01 <br /> Doc. No.: DV-21-0024 <br /> Re: Gladstone Toll Mill Project <br /> Geochemical Waste Characterization Program Results <br /> Dear Messrs. Carter and Lesser, <br /> The following letter summarizes the results of the geochemical testing program performed on the materials <br /> collected from the Gladstone Toll Mill(GTM) Project, located approximately 1.5 miles west of Idaho Springs <br /> (Figure 1). <br /> Idaho Springs <br /> f <br /> r3 ; <br /> Gladstone <br /> Figure 1 Project Location <br /> 1.0 GEOLOGY OF MINERAL DEPOSITS IN IDAHO SPRINGS <br /> The Idaho Springs mining district is located approximately 30 miles west of Denver in northern Clear <br /> Creek and southern Gilpin Counties. Elevations in the area range from 7,600 feet (ft) along Clear <br /> Creek to 9,935 ft on Pewabic Mountain. The district is traversed by U.S. 6 and 40 and Interstate 70 <br /> from Denver, and Colorado Routes 103 and 279. The rugged topography of the district is drained by <br /> Clear Creek, which has as its principal tributaries as Chicago Creek from the southwest, Soda Creek <br /> from the south, Hukill Gulch and Virginia Gulch from the north, and Fall River and Trail Creek from <br /> the west. Other mining districts that border the Idaho Springs district include the Central City district to <br /> Management System Certified by: <br /> J�'S0001:2015 <br /> �esee� are aq sesec� <br />