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<br />e <br />ESPEY, HUSTON &ASSOCIATES, INC. <br />• <br /> <br />The azeas to be inventoried were cleazly delineated on enlazgemeats of <br />the Rattlesnake Mesa, Colorado and the Ninemile Gap, Colorado 7.5' USGS <br />quadrangles by Northern Coal Company. The seismic line was mazked with pin <br />flags, the hydrology and drill hole locations were mazked with lath stakes, and the <br />proposed access road was clearly flagged with surveyor's tape. <br />A 100 percent (BLM Class III) cultural resource inventory was conducted <br />in most of the study azea. Those azeas which were not 100 percent inventoried aze <br />described below sad on the maps in Figs. E-4 and E-5. The field procedures varied <br />depending on the type of inventory being done (drill hole, seismic line, block, etc.), <br />the topography and the density of the vegetation. One to four persons were on the <br />field crew. <br />The seismic line and the proposed access road were walked in a zigzag <br />. pattern to 30 meters and 15 meters, respectively, on either side of the flagged <br />centerline. The drill hole locations were walked in 3-meter pazallel transects in a <br />squaze measuring 60 meters on a side and centered on the lath stake. Existing roads <br />were usually surveyed using a single zigzagging transect, although on occasion, <br />several pazallel traasects were used. <br />All azeas with flat or gently sloping grades and azeas without dense <br />vegetation were inventoried using pazallel transects between 20 and 50 meters in <br />width. Areas with dense vegetation prohibited the use of pazallel transects in <br />several portions of the project azea. Areas with gentle to moderate slopes in <br />conjunction with dense vegetation were surveyed on game trails. Cleazings were <br />surveyed in zigzagging transects. These circumstances were chazacteristic of the <br />majority of ridgetops and forested drainages. In several cases, existing roads <br />followed densely vegetated ridge crests sad provided access to cleazings and game <br />trails. Those portions of the ridge slopes with a slope of less than 20° to 25° and <br />which were transected by game trails were surveyed in single, meandering tranaects. <br />No slopes in excess of 30° were surveyed. Several azeas of extremely dense <br />• <br />E-15 <br />