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• Rule 2: Permits <br />manganese standards were exceeded in monitor well MW-SC. SAR levels ranged from 11.90 to <br />70.30. Electrical conductivity ranged from 0.410 to 2.200 mmhos/cm, exceeding CDMG material <br />standards at MW-4C, MW-SC, and MW-6C. This water-bearing seam shows evidence of <br />limitations for primary and secondary domestic use and agricultural use. <br />Undertiurden <br />Data was collected from each of the underburden wells (MW~U, MW-SU and MW-6U) during <br />the 1996 baseline monitoring period. Each of the wells were monitored monttily for field <br />parameters and water samples were obtained for laboratory analyses. <br />Results from the laboratory analyses was interpreted through the use of Piper and Stiff diagrams. <br />The principal water type observed in wells MW~U through MW-6U is a sodium bicarbonate type. <br />This water is typically neutral to partially alkaline. The pH ranges from 7.28 to 9.07 and hardness <br />ranges from 4 to 170 mg/L. Total dissolved solids in the samples ranged from 482 to 1650 mg/L <br />(filterable residue). <br />All parameters required for analysis were compared with the applicable CDPHE and CDMG <br />standards. Exceedances for iron and fluoride were detected in wells MW~U, MW-SU and MW- <br />6U. Exceedances for pH and manganese were detected in wells MW-SU and MW-6U. Sulfate <br />• and total dissolved solids standards were exceeded in well MW~U. Lead and aluminum standards <br />were exceeded in wells MW-SU and MW-6U, respectively. SAR levels ranged from 5.41 to <br />71.40. Electrical conductivity ranged from 0.450 to 3.260 mmhos/cm, exceeding CDMG material <br />damage standards at MW~U, MW-SU, and MW-6U. The water found in this zone exhibits <br />limitations for domestic and agricultural use. <br />Windmiils <br />Windmills in the site area were surveyed in August 1996. Each windmill was surveyed for depth <br />to water (if possible), temperature, pH, specific conductance, and dissolved oxygen. Several of <br />the windmills were either non-operational, or were inaccessible. <br />Conductivity data from these windmill sites indicates a fairly high degree of mineralization. <br />Comparison of the dissolved oxygen readings and pH values from WMBC2 and WMCWC2 <br />indicate the water in the stock tank may not be representative of the water pumped from the wells. <br />Several of the wells are set in the alluvium; however, depths of many of the wells would indicate <br />that these wells are not set within the alluvium, but within more competent rock. <br />Data was collected from the windmills on August 28, 1996. Each of the windmills were <br />monitored once for field parameters. Water samples were obtained for laboratory analyses from <br />WMLPC-1 and WMCWC-1. <br />• <br />PERMIT.~]SDe¢mber Z0. 1996 2'4-24 <br />