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IV. OBSERVATIONS AND FINDINGS <br /> Reclamation, comprised of backfilling and grading,topsoil placement and seeding for the requested Phase <br /> I SL 18 reclamation parcels, was conducted in 2009 - 2016. Permitted topsoil depth replacement on <br /> rangeland is 12 inches plus or minus 2 inches (permit page 4-256). TMI verifies topsoil replacement <br /> thickness by scraper load counts. TMI included a load count for reclamation parcels in the bond release <br /> application. Although not required for Phase I bond release, DRMS frequently conducts topsoil <br /> replacement depth verification during monthly inspections as documented in DRMS inspection reports. <br /> Parcels AB 09, AB 16, and FA 16 represent constructed drainage and therefore do not require topsoil. <br /> The Division confirms that reclamation parcels have been backfilled and graded in accordance with the <br /> approved post-mining topography and that drainage control has been accomplished. The Division is not <br /> documenting with this (SL 18) findings that topsoil replacement for the associated parcels has been <br /> approved. That will occur in future Phase II bond release Findings. <br /> Compliance with Approved Post Mining Topography <br /> The Division evaluated the reclamation parcels to determine if the affected areas have been backfilled <br /> and graded in accordance with the approved post-mine topography. To evaluate the SL 18 bond release <br /> block for Phase 1 bond release, the Division compared the approved post mining topography (PMT) as <br /> depicted on Map M 1 the Annual Reclamation Report Map(ARR Map,approved by the Division 10 August <br /> 2017 and integrated into the permit at that time as the defacto on the ground topography) to the actual on <br /> the ground conditions after backfilling and grading that occurred as represented by the SL18 bond release <br /> maps (M I). During the Phase I field inspection the Division collected data for use in validating the on <br /> the ground topography of the bond release parcels. <br /> Using the ArcMap 10.3.1 application for mapping andI <br /> analysis, the Division geo-referenced the approved 2016 ` I' OW <br /> II <br /> ARR Maps (Map M1). The Division then placed transects <br /> through the reclamation parcels to be evaluated. <br /> IIIiii S' a <br /> A surveyed elevation point, maintained by TMI and <br /> known to be 7069.89 ft. is located near the "ANFO" <br /> tanks. DRMS measured the elevation with a Bad Elf GNSS .;w <br /> ,� w <br /> (Global Navigation Satellite System) surveyor twice; once <br /> r <br /> in the morning and once in the afternoon. The measurements <br /> were 7096 and 7092 respectively. The average of the two <br /> . <br /> oints, 7094, was calculated and found to be 24.11 ft. higher <br /> in elevation than TMI s surveyed elevation. <br /> if I <br /> During the round inspection. the Division walked each <br /> g p .t <br /> transect, logging elevation points using the Bad Elf. The ;µ " <br /> { <br /> GPS device uses height above the reference ellipsoid that <br /> n <br /> approximates the earth's surface, (GNNS Alt or ellipsoidal <br /> height) and is measured in meters. This value requires <br /> conversion to elevation above mean sea level. The <br /> Photo 2: Collecting a known elevation <br /> with the Bad Elf GNNS Survey instrument. <br /> Permit Number C 1981010 Prepared by: R.Reilley,MS,LISP <br /> SL 18 Page 9 of 22 <br />