Laserfiche WebLink
e <br />ESPEY, HUSTON & ASSOCIATES, INC. <br />• <br />The Federal and State of Colorado Standazd concerning the maximum <br />acceptable levels of TSP that pertain to the azeas surrounding Meeker, Colorado aze <br />as follows: <br />Federal Primary 260 micrograms per cubic meter <br />24-Hour Arithmetic Average <br />75 micrograms per cubic meter <br />Annual Geometric Mean <br />State of Colorado 150 micrograms per cubic meter <br />24-Hour Arithmetic Average <br />Non-designated azeas: 45 micrograms per cubic meter <br />Annual Arithmetic Average <br />The TSP values measured at the south monitoring site near the mine <br />indicate that the prevailing winds from the White River airshed influenced the TSP <br />• levels. The data show that on several occasions (Table H-4) the TSP level at the <br />south site exceeded the State of Colorado standards of 150 micrograms per cubic <br />meter. The evaluation of the wind direction from the available wiad data during <br />these 24-hour measurements indicate that during the production hours of the mine, <br />the wind was from the south. When the TSP data for those days from the north and <br />south stations aze compared with the 24-hour wind rose for the same period, the <br />impact on the south station is appazently from the south. Additional analysis of the <br />south station and its location iadicates that any cultivation of the properties to the <br />south could significantly increase the TSP level. The topography of the location of <br />the sampling station could also significantly increase the TSP level during snow and <br />ice control on the road by the Colorado Department of Highways. The two high TSP <br />values recorded during 1979 at the north station cannot be explained because the <br />field data sheets for these days do not indicate any unusual condition that would <br />contribute to the high loadings. <br /> <br />H-18 <br />