REP00257 - Laserfiche WebLink

Home Browse Search

Dccenrber Z3, l9>9 Puge lS • Instrument Minimum Constituent Units Detection Standards Limit (IMDL) Dissolved Sodium mg/L 0.02 ' Dissolved Strontium mg/L 0.01 Dissolved Sulfate mg/L 0.5 250 DW Dissolved Sulfide as HZS mg/L 0.02 Dissolved Thallium mg/L 0.00005 0.002 HH Dissolved Uranium mg/L 0.00005 Dissolved Vanadium mg/L 0.005 0. i AG Dissolved Zinc mg/L 0.002 2.0 AG, 5.0 DW Gross Alpha Particle Activity pCi/1 2 15 HH Gross Beta Particle Activity pCi/1 4 4 mrem/year HH /MDL = /nstrument Minimum Defection Limit DW = Saje Drinking Water Standard AC = AgricrdturalStandard HH = Human Health Standard Standards from Colorado Department ojpublic Health and Environment, Water Qualiq~ Caurol Commission, Regulation No. a 1, "The Basic Standards jor Groundwater. " • 3.2 Parachute Creek Monitoring Parachute Creek monitoring will include discharge and water quality. Parachute Creek will be monitored at upstream and downstream gauging locations. The upstream location, historically designated PC12, is just below the confluence of Wheeler Gulch. The downstream location is historically referred to as PC 11. The baseline discharge and water quality of Parachute Creek, in the vicinity of the site, will be established prior to the star[ of commercial solution mining operations by the collection and analysis of 5 quarters of data collection. The surface water stations will be monitored on a once- per-quarter basis during the baseline monitoring period and during commercial operations, according to USGS protocol. During these monitoring events, the discharge will be measured and Parachute Creek samples wilt be analyzed for parameters listed in Table 5. The metals and nutrients listed in Table 5 will be analyzed for the dissolved portion for compatibility with the historical database for Parachute Creek. Monitoring will be performed by American Soda, and water samples will be sent to a State ofColorado-certified lab. 3.3 Spring and Secp Monitoring-Piccance Site • Springs and seeps at the Piceance Site will be monitored for discharge and water quality. The spring and seep survey will encompass the lease boundary and the area behveen the southern Agapito Associates, Inc.