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i <br />~ iiiiiiiiiiiiiiuiii <br />PARAGON ENGINEERING, INC. <br />ENGINEERS, PLANNERS, ARCHITECTS <br />October 18, 1983 <br />RECEIVED <br />OCT 20 °43 <br />.lames McArdale <br />Mined Land Reclamation Division <br />423 Centennial Bldg. <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />ALINED UNO REC(AlApT(AN ;;1G15l0~! <br />0010. Dept. GI tVatu!0! NhSuureea <br />Re: Hall Pit, File No. 83-142 <br />Dear Mr. McArdale: <br />In response to your adequacy letter of September 15, 1983, we have <br />had a site geologic report prepared. I sent that and several photo- <br />graphs of the site to you on October 11, 1983; please consider them to <br />be an "official" portion of this response. <br />C. Exhibit D - Mining Plan <br />1. The following table is based on the geologic map prepared by <br />Marcy Espegren. There is a usable depth of topsoil (avg. depth = <br />2 ft.) in a portion of Phase 1. Other than that, the top 6" to <br />12" of other mined areas can be stockpiled for reclamation purposes. <br />The operator is required by Mesa County to leave a minimum six <br />foot (6') gravel cap over the underlying shale because of the <br />future potential residential use. The topsoil/overburden shall be <br />stockpiled for each phase at an easily accessable spot on the next <br />phase except for Phase 5, which shall be piled on Phase 4. The <br />stockpiles will be spread out when the mining operation is com- <br />pleted on each phase. <br />Topsoil/Overburden to be stockpiled <br />r ' . ;` • <br />Phase 1 0.5 Ac w/ 2' depth 1450 c.y. -' "' <br />Phase 1 7.5 Ac w/ 6" depth 6035 c.y. w~" ~~~++' /~~'~ <br />Phase 2 1.4 Ac w/ 6" depth 1130 c.y. <br />Phase 3 3.1 Ac w/ 6" depth 2500 c.y. <br />Phase 4 4.4 Ac w/ 6" depth 3550 c.y. <br />Phase 5 2.7 Ac w/ 6" depth 2180 c.y. <br />3. The topsoil is of l ow organic and high gravel content, and <br />the terms "topsoil" and " overburden" are used interchangeably. <br />4. Please refer to soils descriptions and site photographs. <br />G. Exhibit I - Soils Information <br />1. Please see geologic/soils map prepared by Marcy Espegren, <br />transmitted October 11, 1983. <br />2764 Crossroads Blvd., Suite 104 Grand Junction, Colorado 81501 <br />Phone (303) 243-8966 <br />