Laserfiche WebLink
MEMO <br /> <br />TO: <br /> Steve Rohlf <br />COMPANY: <br /> City of Elk River <br />FROM: <br /> Matthew Ledvina, P.E. <br />DATE: <br /> July 28, 2004 <br />RE: <br /> Schuer, Inc./Schmidt Gravel Mine - Groundwater Monitoring Plan and Environmental Spill <br /> Plan Review <br />NOTES/COMMENTS: <br /> <br />As requested, I have reviewed the above referenced documents for the Schuer, Inc.lSchmidt Gravel <br />Mine. The following comments are provided in support of Conditional Use Permit (CUP) <br />development for the Site. <br /> <br />Groundwater Monitoring Plan Ground water elevations were measured in June and July 2004. An <br />interpretation of the groundwater flow with a water table contour map should be provided from this <br />data. The consistency of the groundwater level data should be assessed. The groundwater flow <br />interpretation for the site should be assessed in relation to the regional hydrogeology. <br /> <br />The monitoring schedule should identify that all three monitoring wells on the property be initially <br />monitored for the listed parameters for two sampling events within a four week period to provide <br />baseline of data for ongoing monitoring at the site. The annual groundwater sampling should include <br />the sampling of, at a minimum, one of the upgradient wells in addition to MW-1. This will enable <br />comparisons of water quality between upgradient and downgradient points at the site. <br /> <br />Field parameters of pH, temperature and conductivity should be reported and interpreted with the <br />analytic monitoring results for groundwater sampling. <br /> <br />The City of Elk River should be notified ASAP if water quality monitoring data indicates the potential <br />occurrence of environmental release. Water quality for groundwater sampling for the J&B monitoring <br />should be incorporated into the assessment provided with the annual monitoring report. <br /> <br />Environmental Spill Plan The Plan has been developed with an acceptable general outline. The <br />existing SWPP should be reviewed and updated as necessary to reflect the Phase 4 mining <br /> <br /> · O O <br /> MINNEAPOLIS HOUSTON DENVER <br /> 1000 IE)S Center Suite 200 Tower One, Suite 580 <br /> <br /> 80 South Eighth Street 520 Post Oak Boulevard 1515 Arapahoe Street <br />Minneapolis, MN 55402 Houston, TX 77027 Denver, CO 80202 <br /> 612.347.6789 832.203.1492 720.956.5300 <br /> <br /> O O <br /> PROVIDENCE ANCHORAGE <br /> Suite 2020 Key Bank Plaza, Suite <br /> 301 <br />One Financial Plaza 601 W. Fifth Avenue <br />Providence, RI 02903 Anchorage, AK 99501 <br />401.278.4300 907.777.5300 <br /> <br /> <br />