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<br />' Centennial Materials, Inc. Plains Sharp-Tailed Grouse Study <br />' EXECUTIVE SUMMARY -Castle Rock Quarry (e2M) <br />' Centennial Materials, Inc. is planning the development of two rock quarry sites within a <br />property known as the Castle Rock Quarry southeast of Castle Rock, Colorado. As a part of <br />their permitting requirements, a survey was requested for the Plains Sharp-tailed Grouse. <br />The area surveyed was in portions of Sections 27, 28, 29, 33, and 34 of T.8S and R.66W of <br />the Castle Rock South USGS 7.5 minute quandrangle. <br />' The surveys were conducted following procedures recommended by Mr. Clait Braun, <br />Colorado Department of Natural Resources grouse expert. Prior to conducting the surveys, <br />' the tape recorded call and displays sounds of the sharp-tailed grouse were reviewed. The <br />Bionic Booster and Bionic Ear were used to amplify bird sounds and identify any grouse <br />present in and around the study area. <br />' The surveys were conducted for four days commencing on the 13th of May, 1995, and were <br />concluded on the 16th of May. Each survey began at approximately 6:00 a.m. and followed <br />' a route through the Castle Rock Quarry. At approximately one-third mile intervals along this <br />route, listening stations were established where the observer would listen with the Bionic Ear <br />and Booster for 3-4 minutes to identify grouse or other avian sounds or calls. <br />1 Over the four-day survey period, no Plains Sharp-tailed Grouse were observed or heard. <br />The common bird species detected with the Bionic Ear and Booster were the western <br />' meadowlark, vesper sparrow, mountain bluebird and song sparrow. <br />' EXECUTIVE SUMMARY -McClain Pit {American Geological Services, Inc.) <br />The McClain Pit Study Area was surveyed for the possible presence of a Plains Sharp-tailed <br />1 Grouse communal breeding ground. The survey was performed by two wildlife biologists, <br />Susan Komarek and Louis Farle. Ms. Komarek met with the Colorado Division of Wildlife <br />(DOW) during the first week of the survey. The survey followed procedures set forth by <br />Clair Braun (DOW grouse expert). The survey was conducted on Sundays and Tuesdays <br />from 5:45 a.m. to 8:00 a.m. from April 1 to May 15, 1993. The survey entailed listening <br />' for three to five minutes at one-quarter to one-third mile intervals along roads within aone- <br />mile radius of the McClain Pit, using a parabolic ear The sounds of displaying Sharp-tailed <br />Grouse were reviewed on tape before listening began each day. The stations were <br />' determined after a meeting with Dave Weber (DOW habitat biologist] and Dray Harrison <br />(DOW district wildlife manager), during which suitable habitat within the one-mile radius <br />was discussed and how to obtain the best coverage of that. <br />1 <br />' engineering-environmemal Management, Inc, 11 July 12, 1995 <br />1 <br />