ENFORCE28563 - Laserfiche WebLink

Home Browse Search

q i 4 INTEROFFICE MEMORANDUM COLORADO DIVISION OF MINERALS AND GEOLOGY 1313 Sherman S[., Rm. 215 Denver, CO 80203 TO: Aggregate Industries - WCR, Inc., Cooley Reservoir and Fulton Wildlife Area Pit Permit No. M-1999-034, Adams County FxOM: Kathleen L. Sullivan, PE SUBJECT: DIMP Sampling Follow-up, MLRB Order dated July 8, 2003 DATE: 10/22/04 CC: Dr. Harry Posey, CDMG I was asked to review this file tc assess status of compliance with the referenced MLRB Order and to respond to concerns raised in a September 27, 2004 letter from objectors Karen and Ralf Topper. State Engineer's Office Status of Substitute Water Supply Plan: Prior plan expired August 31, 2004. A renewal request was submitted for "Fulton Lakes Pit" and adding "Jeronimus Pit" (in the SSP request, they have it under iwo names, apparently for different areas of the same mining permit site). They are part of a combined plan for a number of S. Platte pits. Approval is held up because of an issue with changing the use of Old Brantner Ditch rights. The application covers a max ground water exposure just short of 15 acres for the plan year for the Jeronimus Pit. NO well permits have been issued for the Fulton or Jeronimus sites. Receipt no. 0510199, for the permit application was submitted May 7, 2003, but not issued after the prior SSP approval, so no well permit exists for these pits. (contact -Joanna Williams) Well Permits: Well Permit No. 2455 is designated as the "house" well. It was errantly cited in the board order. The well actually sampled, at the owner/objector's request, was the "field" well, well permit no. 32883. Well Permit No. 32883, the "field" well, is limited by this permit to pumping a maximum of 45 gpm, though the reported yield was 70 GPM at the time of well construction and pump installation on February 27, 1968. Therefore, the 150 gpm flow rate reported with the collected sample is unlikely or illegal. This also throws off the calculation of purged casing volumes. CDPHE -Groundwater Greg Naugle (303)692-3582 Per an October 7, 2004 telephone conversation with Greg Naugle, • Sampling for DIMP from a 150 GPM well is a fairly common sampling practice. DIMP is not likely to volatilize since it is a "semi-volatile" compound.