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hk mic <br /> / 0il <br /> -General Shale <br /> Building The American Dream <br /> August 21, 2014 <br /> Colorado Division of Reclamation, Mining, and Safety <br /> Mr. Michael Cunningham <br /> Environmental Protection Specialist <br /> 1313 Sherman Street, Room 215 RECEIVED <br /> Denver, CO 80203 <br /> -�EP 11 1t1t4 <br /> Re: <-1977-251 Lariat Mine, Jefferson County, Colorado <br /> ,-"Technical Revision Inert Fill Import DIVISIONMININGND SAGANDSA+MAFETy <br /> Y <br /> Dear Mr. Cunningham: <br /> General Shale Brick, Inc. (GSB) is providing Technical Revision JR) which is a notice of intent to <br /> backfill inert structural fill, generated outside of the permit area at the Pioneer Mine per rule 3.1.5.9. <br /> We have enclosed a check for the TR fee of$216. <br /> Placement of the scrap brick will assist in site reclamation by providing additional fill material as <br /> replacement for mined materials. <br /> The inert fill material will consist of scrap brick generated from the GSB's Denver brick plant. We <br /> anticipate placing 20,000 tons of scrap brick into the pit. An affidavit is attached certifying that the <br /> scrap brick mix is inert and "clean". <br /> We plan on hauling the scrap brick and placing it on the clay stockpile pad areas (inside the current <br /> disturbance boundary). Then when concurrent reclamation begins approximately in 2020 we will <br /> place the scrap brick into the pit. We do not anticipate any settling and voids due to the placement of <br /> these materials because the materials will be placed in 5-10 foot lifts, blended with the current <br /> overburden materials and compacted. The scrap brick will be hauled starting on or about September <br /> 29, 2014 and ending September 29, 2024. <br /> These materials will not impact surface water runoff quality, because these materials does not contain <br /> contaminants, and local area storm water runoff is diverted away from the mine disturbed area. The <br /> scrap brick will not contaminate ground water because it has been fired to a high temperature. <br /> Further, these materials will not be placed below the saturated zone. <br /> Please feel free to contact me with any questions at 303-783-3058. <br /> Sincerely, <br /> General Shale Brick, Inc. <br /> Jason E. McGraw PE <br /> Mine Supervisor <br /> Enc: Affidavit and Check for TR Fee <br />