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MOLEN & ASSOCIATES, LLC <br />ENVIRONMENTAL, CONSULTANTS <br />2090 E. 1041h Ave., Suite 202 ♦ Thornton, Colorado 80233 <br />Office 303 - 450 -1600 ♦ Fax 303 - 452 -4515 <br />August 10, 2012 <br />Connie N. Davis, Land Advisor <br />Land Advisor, Environmental and Land Services <br />Aggregate Industries US <br />Aggregate Industries - WCR, Inc. <br />P. O. Box 337231 <br />Greeley, CO 80633 <br />Re: Information Request <br />Broda- Al Platte Valley Site, 1859 North Highway 85, Brighton, Colorado <br />Dear Mrs. Davis: <br />This letter is in response to an August 6, 2012 letter to Patrick Broda. The letter requests <br />information concerning submittals to the Colorado Department of Public Health and <br />Environment ( CDPHE), Weld County or other governmental agencies. The information is <br />addressed in this letter and documents are attached. <br />Filling at the Broda — Aggregate Industries Platte Valley site have been progressing without <br />incidents or regulatory concerns. The Recycling Facility Annual Reporting Form was completed <br />and submitted electronically to CDPHE on April 26, 2012. A copy of the recycling report is <br />attached. <br />Groundwater monitoring has been done on a semi - annual basis in April and October. The <br />groundwater monitoring analytical reports for 2011 are attached. Groundwater elevations are <br />recorded each time the water sampling is done and a copy of the recorded information is <br />attached. <br />Well Construction and Test Reports for the three wells on site were submitted to the Colorado <br />Department of Natural Resources Division of Water Resources on July 11, 2012. The submittal <br />of these reports should complete the registration of the three groundwater monitoring wells. <br />Copies of the Well Construction Test Reports and related information are attached. <br />There have not been any inspections of the facility in 2011 by CDPHE. There is no additional <br />communication with regulatory agencies over the past year other than the information included <br />with this letter or sent to you previously. <br />