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Deccntber 23, 1999 Pugs 22 <br />• total concentration of any parameter exceeds the corresponding concentration on the "TCLP list," <br />that parameter will be re-run using the TCLP laboratory analysis method. <br />American Soda will provide the results of the hazardous waste testing to BLM, EPA, and <br />CDMG upon completion of their review. After the preliminary evaluation, the "Part 262.1 I" <br />review will be performed on an as-needed basis (i.e., when raw materials are changed, processes <br />are modified, etc.). <br />4.3 Solution and Cooling Ponds <br />The solution and cooling ponds associated with the test mine facility (Figure 1) are <br />protected against leakage by a double geosynthetic liner and geonet leak detection and collection <br />system (LDCS), which is currently monitored twice per shift. The freeboard of the dams is also <br />measured once per day. Monthly water level measurements and water quality samples will be <br />collected from the alluvial monitoring wells 21-2, 28-1, and 21-5. <br />During commercial operations, alluvial monitoring well 19-3 (located downstream of the <br />proposed evaporation pond at the upper plant) will be used to monitor for potential pond leakage. <br />• This well was designed and constructed in accordance with recommendations ofthe BLM. <br />Several alluvial monitoring wells are in existence at the Parachute Creek plant site. These <br />wells were installed and monitored previously by Unocal as part of their environmental protection <br />program. One or more of these wells (or well 34-1) could serve as monitoring wells for the pond <br />system to be constructed at the Parachute Creek (Unocal) site. <br />4.4 Pipeline Monitoring <br />The pipeline that transports process solution and recycled water between the Piceance Site <br />and Parachute Site will be monitored. The parameters and related sampling frequencies are listed <br />in Table 7. <br />• <br />Agapilo Associates, Inc. <br />