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REP39092
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REP39092
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Entry Properties
Last modified
8/25/2016 12:24:34 AM
Creation date
11/27/2007 8:17:25 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1993041
IBM Index Class Name
Report
Doc Name
CHAIN OF CUSTODY
Permit Index Doc Type
ANNUAL FEE / REPORT
Media Type
D
Archive
No
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• <br />Itlvr?t <br />3.0 MONITORING LOCATIONS <br />Monitoring locations are shown on Plate 1. All locations are in Township 3 North, Range 70 West. <br />Monitoring well DFMW-1 is located in an ephemeral stream channel near the northern boundary <br />of the property (NWl/4, NE1/4 SEC 9) and south of the St. Vrain Supply Water Canal. <br />Monitoring well DFMW-2 is located near the southwest corner of the site (SE 1/4, NWI/4 SEC <br />21), between Highway 66 and the Palmerton Ditch. Monitoring well DFMW-3 is located near the <br />southeast corner of the Garner Dairy (NW 1/4, NWI/4 SEC 22), north of the Rough and Ready <br />Ditch. Monitoring well DFMW-4 is located near the southeast corner of the site (SW 1/4, NE 1/4 <br />SEC 22), along the south bank of the Palmerton Ditch, south of the Hall Farm. DFMW-1 is <br />upgradient of the mine site and serves as the background well for the shallow alluvial aquifer. <br />DFMW-2, 3 and 4 are downgradient of the mine site. <br />Surface water location DFSW-I is located in the ephemeral stream channel approximately 100 <br />feet south of monitoring well DFMW-1 (NW 1/4, NE 1/4 SEC 9). Surface water location DFSW-2 <br />is located on the north bank of the St. Vrain River, west of the bridge on the Southwestern <br />Portland Cement Company entrance road (NE I/4, SW 1/4 SEC 21). Surface water location <br />• DFSW-3 is located on the west bank of the St. Vrain River, north of the bridge on North 63rd <br />road (SE I/4, NE 1/4 SEC 27). The surface water locations are approximate and have not been <br />surveyed. DFSW-1 is upgradient of the proposed mine site and downgradient of [he Syntex <br />chemical landfill site. It is used to determine the quality of water flowing into the proposed <br />mine area in intermittent drainages Crom the north. DFSW-2 is in the St. Vrain River upstream <br />of the proposed mine area. DFSW-3 is in the St. Vrain River downstream oC the proposed mine <br />area. These locations will allow determination of water quality impacts on the St. Vrain River <br />due to discharge from the proposed mine. <br />4.0 SAMPLING PROTOCOL <br />The monitoring well sampling procedure involved purging each well a minimum of three casing <br />volumes and sampling. The wells were purged on the day of sampling to ensure that <br />representative groundwater samples were obtained. The sampling activities were planned to <br />include surface water sampling and monitoring well sampling on the same day. <br />Pmjsl N®b~ 2t~9J-012 <br />• Jaaary 21, 1991 <br />P~e2 <br />
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