2012-02-28_REVISION - M1980244 (96)

Home Browse Search

Monitor Well Depth (feet) Bedrock Geology Aquifer designation Grassy Valley reach Pressure transducer MLE2 Impact Water Quality GVMW 4A 480 Granite Bedrock Middle Yes None Yes GVMW 4B 50 Granite Shallow Bedrock Middle Yes None Yes GVMW 6A 200 Granite Bedrock Middle Yes None Yes GVMW 7A 200 Granite Bedrock Middle Yes None Yes GVMW 7B 50 Granite Shallow Bedrock Middle Yes None Yes GVMW 10 270 Diatreme Bedrock Middle Yes None Yes GVMW 15B 102 Granite Bedrock Middle Yes None Yes GVMW 15A 820 Granite Bedrock Middle Yes None Yes GVMW 20 800 Granite Bedrock Middle No WHEX No; dry CAM 1A 200 Diatreme Bedrock Middle Yes ECOSA Yes CAM 1B 70 Diatreme Shallow Bedrock Middle Yes ECOSA Yes CAM 1C 500 Diatreme Bedrock Middle Yes ECOSA No; dry CAM 1D 750 Diatreme Bedrock Middle Yes ECOSA No; dry COB 1A 200 Granite Bedrock Middle Yes ECOSA Yes COB 1B 60 Granite Shallow Bedrock Middle Yes ECOSA Yes WLMW 1B 50 Diatreme Shallow Bedrock Middle Yes ECOSA Yes WLMW 1A 185 Diatreme Shallow Bedrock Middle Yes ECOSA Yes WLMW 1C 500 Diatreme Bedrock Middle Yes ECOSA No; dry WLMW 1D 750 Diatreme Bedrock Middle Yes ECOSA No; dry Monitor Well Depth (feet) Bedrock Geology Aquifer designation Grassy Valley reach Pressure transducer MLE2 Impact Water Quality GVMW 1B 50 Granite Shallow Bedrock Upper Yes WHEX Yes GVMW 2B 30 Diatreme Shallow Bedrock Upper Yes WHEX Yes GVMW 3A 500 Diatreme Bedrock Upper No WHEX No; dry GVMW 3B 50 Diatreme Shallow Bedrock Upper Yes WHEX Yes GVMW 5 250 Granite Bedrock Upper Yes WHEX Yes GVMW 12A 300 Granite Bedrock Upper Yes WHEX Yes GVMW 12B 50 Granite Shallow Bedrock Upper Yes WHEX No; dry GVMW 13B 550 Granite Bedrock Upper Yes WHEX No; dry GVMW 13C 50 Granite Shallow Bedrock Upper Yes WHEX No; dry GVMW 14B 100 Granite Bedrock Upper Yes WHEX No; dry GVMW 14C 625 Granite Bedrock Upper No WHEX No; dry GVMW 16B 102 Granite Bedrock Upper No WHEX No; dry GVMW 16A 820 Granite Bedrock Upper No WHEX No; dry GVMW 17B 105 Granite Bedrock Upper Yes WHEX No; dry GVMW 17A 820 Granite Bedrock Upper Yes WHEX No; dry GVMW 21A 200 Granite Shallow Bedrock Upper Yes None Yes TABLE 6 -4 GRASSY VALLEY MONITOR WELLS, PIEZOMETERS, AND BOREHOLES 'Approximate depth of monitor well. 2 "Granite" collectively refers to the Precambrian granites, granodiorites, schists, and gneiss units that are adjacent to the Diatreme. "MLE2 Impact" indicates the monitor wells, piezometers, or boreholes that will be plugged and abandoned by MLE2 development activities. Not included in the statistical summary or graphs due to limited dataset (usually 52 samples). Also coverage is available from nearby wells.