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<br />the ground. Electric power is fed to the monitors <br />from overhead power lines. <br />The four air monitoring stations will be removed at the <br />end of the mine life. The removal of the air moni- <br />toring station will involve: <br />(1) Disconnecting power lines <br />(2) Removing Hivol and plywood platform _ <br />(3) Removing pole <br />(4) Filling in hole and placing topsoil at least 8 in. ',- <br />thick <br />(5) Revegetating any associated disturbance. <br />• <br />Appendix J, (Volume IV) is additional information provided by <br />H-G Coal Company on Air Quality. A report by ENVIROTEST <br />LTD., P.O. Sox 15325, Lakewood, CO. 80215 (303) 233-4082 for <br />the period May 1, 1977 to April 30, 1978 is submitted. <br />2.05.6 (1) (c) For all surface mining activities a narrative and appropriate <br />map(s), prepared according to 2.10, generally explaining <br />the location, construction, modification, use, maintenance <br />and removal of each air pollution collection and control . <br />facility. <br />RESPONSE <br />The construction of the air monitoring platforms involves <br />only minimal disturbance to the undisturbed ground. The air <br />monitors are placed on plywood platforms bolted to poles approx- <br />imately 10 in. in diameter. The platforms are located about 10 <br />feet above the ground. Electric power is fed to the monitors <br />from overhead power lines. <br /> The four air monitoring stations will be removed at the end <br />. of the mine life. The removal of the air monitoring station will <br /> involve: <br />