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F. Impoundments <br />No impoundments other than two sediment ponds are proposed. <br />G. Surface and Ground Water Monitoring <br />Information on Surface and Ground Water Monitoring is found in Volume 3, Tab <br />13 of the permit application. <br />Ground Water Monitoring Plan <br />The applicant will conduct monitoring of ground water in a manner approved <br />by the Division. Baseline data was collected in 1977 and 1978 with <br />construction of the facility beginning in 1977. No ground water monitoring <br />wells are associated with the TAHR addition to the permit. The ground water <br />monitoring plan currently in operation at the loadout consists of taking <br />samples in the spring and fall from wells HGDAL 3 and HGDAL 4. Well <br />HGDAL 3 is completed in Dry Creek alluvium downstream from the Loadout <br />facilities. HGDAL 4 is completed in shallow alluvium upstream of the <br />Loadout adjacent to Dry Creek, below the confluence of Stokes Gulch and <br />Dry Creek (4.05.13(1)). The list of parameters analyzed for both wells is <br />found in Table 13 -2 of Tab 13. <br />Ground Water Points of Compliance <br />Rule 4.05.13 requires establishment of groundwater points of compliance if, in <br />the judgment of the Division, the operation has the potential to negatively impact <br />the quality of ground water for which quality standards have been established by <br />the Water Quality Control Commission. Groundwater points of compliance are <br />unwarranted at the Loadout, as discussed below. <br />Alluvial Ground Water — Dry Creek alluvial ground water in the area down - <br />gradient from the main surface disturbance of the Loadout can be classified as <br />"Limited Use and Quality" based on natural TDS concentration being consistently <br />above 10,000 mg /l in alluvial ground water well HGDAL -3. Ground water <br />classified as "Limited Use and Quality" has limitations for only radioactive or <br />organic pollutants. The Loadout is not likely to generate significant amounts of <br />radioactive or organic pollutants; therefore, the operation does not have the <br />potential to negatively impact the quality of ground water in the Dry Creek <br />Alluvium. <br />Bedrock Ground Water — The Loadout does not have the potential to negatively <br />impact bedrock ground water quality due to the fact that any leachate originating <br />from the Loadout would lack sufficient hydraulic head to significantly invade the <br />bedrock unit underlying the area (low permeability Lewis shale). This marine <br />shale confines aquifer units in the underlying Mesaverde Group (Scott and Kaiser, <br />1994, Hydrologic Survey Resources Series 30, page 63). Several hundred feet of <br />Hayden Gulch 23 February 11, 2014 <br />