2013-09-26_HYDROLOGY - M2000156 - Laserfiche WebLink

Home Browse Search

DEPARTMENT OF NATURAL RESOURCES DIVISION OF WATER RESOURCES �Yr. Peter Wayland eiland, Inc. PO Box 18087 Boulder, CO 80308 September 25, 2013 RE: Bonser Substitute Waf u I Plan (WDID 0402549) Bonser Pit, 2000 -156 (WDID 0403021) Portions of Sections 15 and 16, T5N, R68W, 6th P.M. Water Division 1, Water District 4, Larimer County Approval period: September 25, 2013 through August 31, 2015 Contact Phone Number for Mr. Wayland. 303 - 443 -9521 Dear Mr. Wayland: John W. Hickenlooper Governor Mike King Executive Director Dick Wolfe, P.E. Director /State Engineer Receive,) S6 � '013 DIVIStort or Mining t`ec, ,oration, �n5 & Safety We have reviewed your letter dated March 21, 2013 requesting a substitute water supply plan ( "SWSP ") to cover depletions caused by the Bonser Pit sand and gravel mining operation. The required fee of $1,593 has been submitted (receipt no. 3659345). This sand and gravel pit is operated by Coulson Excavating Co., Inc. ( "Applicant "). This is the first SWSP obtained for this mining operation. Plan Operation The Bonser Pit is currently used as a materials processing site for the adjacent Flying W Pit (DRMS M- 2005 -004, WDID 0403006, SWSP WDID 0402526). Mining at the Bonser Pit is not expected to occur for another 2 to 5 years, though a 6.3 acre ground water pond has already been created at the site. This pond was created from a borrow pit excavation onsite of the Bonser Pit. This SWSP covers evaporation resulting from this pond, as well as dust control use for water diverted out of this pond. Replacements will be made via leases with the City of Loveland for fully consumable water. Depletions Depletions to the Big Thompson River will occur as the result of evaporation from ground water exposed in the borrow pit pond, and water used for dust control. Net evaporative depletions were calculated using a gross annual evaporation of 39.5 inches from the exposed water surface, with a credit of 10.6 inches for effective precipitation. In addition to the 6.3 -acre borrow pit pond, there are three exposed ground water ponds in the southwest portion of the mining site. This SWSP formally recognizes these three ponds as being a ground water exposure caused by sand and gravel mining activities prior to January 1, 1981 ("pre - 81"). In accordance with water court case 09CW49 and current administrative policy found in the State Engineer's General Guidelines for Substitute Water Supply Plans for Sand and Gravel Pits (updated April 2, 2011), the State Engineer will (1) not require replacement for evaporation on pre -81 areas regardless if mining continued at the site post 1980 and (2) require that the pre -81 area be limited to the location where it existed prior to 1981 unless the Applicant can show that the State Engineer previously recognized in writing a re- allocation of the pre -81 area within the permit 417ffice 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