2013-05-29_HYDROLOGY - M2001085 - Laserfiche WebLink

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DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES John W. Hickenlooper Governor Mike King May 28, 2013 Executive Director Dick Wolfe, P.E. Director /State Engineer Craig Lis artin and Wood Water Consultants, Inc. 538 Commons Drive Golden, CO 80401 v Re: GSL Sand and Gravel Substitute Water Suppl y Plan (WDID 0202584) (a.k.a. 120th Estates Pa ners Sand and Gravel Mine and 124th Estates Pit) GSL Sand and Gravel Mine, DRMS Permit No. M--2001 -085 (WDID 0203018) Section 35, T1 S, R67W, 6th P.M. Water Division 1, Water District 2, Adams County RECEIVED Approval Period: November 1, 2012 through October 31, 2013 Contact phone number for Mr. Craig Lis: 303 - 526 -2600 "LAY 2 201 Dear Mr. Lis: DIVISION OF RECLAMATION MINING AND SAFETY We have reviewed your letters dated October 2, 2012 and February 25, 2013 requesting renewal of the above referenced substitute water supply plan ( "SWSP ") to cover depletions caused by an existing gravel mining operation in accordance with § 37 -90- 137(11), C.R.S. The original plan was approved on May 20, 2002 and it was most recently approved in a letter dated March 22, 2012. The required fee of $257 for the renewal of this SWSP has been submitted (receipt number 3657285). Plan Operation This SWSP covers depletions caused by sand and gravel mining operations at the GSL Sand and Gravel Mine. Mining operations stopped in November 2011 and the pit has since filled creating a 26.70 acre pond. Therefore the entire water surface area is considered to be ground water as the existing liner is no longer functional due to leaks in two locations. The previous SWSP anticipated only 15 acres of exposed ground water. The Division office became aware that actual exposed area was larger than 15 acres and on August 21, 2012 sent a Show Cause Order requiring the exposed surface area be re- evaluated. In response to that Show Cause Order, the Applicant caused a survey of the site to be performed. An exhibit dated September 11, 2012 shows a 26.7 acre ground water pond. Adequate records were not kept by the operator to know with certainty when the pond filled to the full 26.7 acres as was observed in August 2012. To be conservative this WY 2013 SWSP analyzes the evaporative lagged depletions based on the an assumption that the 26.7 acre ground water pond came into existence starting February 2012, the same month the WY 2012 SWSP projected the pit would stop filling and be at 15 acres. This SWSP does not authorize nor cover any other water use including dust control operations. Depletions The depletions that result from the past mining operation at the site consist of evaporation from exposed surface area, water used for dust suppression, water removed in the mined product, water lost in dewatering and pit filling operations. Other than evaporation no new 'Office of the State Engineer 1313 Sherman Street, Suite 818 - Denver, CO 80203 - Phone: 303 -866 -3581 - Fax: 303 - 866 -3589 www.water.state.co.us