Laserfiche WebLink
No impoundments, with the exception of the two sediment ponds, are approved or <br />proposed. <br />G. Surface and Groundwater Monitoring <br />Information on Surface and Ground Water Monitoring is found in Volume 3, Tab <br />13 of the PAP. <br />Ground Water Monitoring Plan <br />1. 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 annually from wells HGDAL 3 and HGDAL 4. Well HGDAL 3 is <br />completed in Dry Creek alluvium downstream from the Loadout facilities. <br />HGDAL 4 is completed in shallow alluvium upstream of the Loadout <br />adjacent to Dry Creek, below the confluence of Stokes Gulch and Dry Creek <br />(4.05.13(1)). The list of parameters analyzed for both wells is found in Table <br />13-2 of Tab 13 of the PAP. <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/1 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 />911 <br />