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May 22, 2015 <br />J� Mr. Peter Hays <br />Environmental Protection Specialist <br />State of Colorado <br />Division of Reclamation, Mining, & Safety <br />1313 Sherman Street — Room 215 <br />Denver, CO 80203 <br />DEQ <br />RE: Loloff Construction, Inc. — Loloff Pit — File No. M-1985-112,"" <br />-1985-112, " Responses to Letter `Dated <br />April 23, 2015 regarding Groundwater Monitoring Data <br />Dear Mr. Hays, <br />Nj <br />r J&T Consulting, Inc. and Loloff Construction, Inc. have reviewed the letter dated April 23, 2015 <br />regarding Groundwater Monitoring Data. The following are our responses to each of the <br />numbered comments you provided in the letter: <br />1. The Division did not receive groundwater elevation data for the Monroe well, <br />which is included in the approved groundwater monitoring plan. Please <br />provide groundwater elevation data for the Monroe well and begin the required <br />monthly well monitoring, if not already started by the Operator. <br />Response: <br />The well was reviewed to see if access could be gained to measure the water level in <br />the well. Mr. Doug Derr met with the Monroe's and after trying to remove some of the <br />existing equipment it was determined that since the materials were galvanized steel <br />they did not want to continue as there were concerns that the existing <br />equipment/materials might break. The Monroe's indicated that as long as the pond <br />continues to be recharged and filled they had no problems with their well. <br />2. In the Responses to Second Adequacy Review Comments for TR -01, dated <br />October 21, 2013, the Operator committed to providing the trigger level <br />elevations from a 2 -foot change from historical groundwater levels for each <br />monitoring location with the groundwater data. The Division has not received <br />the trigger level elevations for the monitoring locations with the groundwater <br />date provided by the Operator. Please provide the trigger elevations for the <br />monitoring locations with the groundwater data provided by the Operator. <br />Please provide the trigger elevations for each monitoring well location. <br />Response: <br />The wells on the west side of the pit have been monitored which include the Parker, <br />Harrell and Francis wells. Loloff Construction is working with Parkers on their existing <br />well to come up with a solution to either re -drill that well or provide potable water <br />from North Weld Water. If there is a drop of more than 2 feet in the Harrell and <br />Francis wells, from the monitoring elevations provided in April 2015, Loloff <br />Construction will continue to work with the well owners to provide a solution to any <br />problems they may have with their wells. <br />V, 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 • Fax: 303-857-6224 <br />