PERMFILE48308 - Laserfiche WebLink

Home Browse Search

f ~~TATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 Phone: (303) 866-3567 _ FAX: (303) 832-8106 January 28, 2003 Mr. Hazold Elam Elam Construction, Inc. 1225 South 7`s Street Grand Junction, CO 81501 RE: Elam Construction, Inc., Application No. M-2002-119 Fetcher Gravel Pit; Adequacy Review Dear Mr. Elam, DIVISION OE MINERALS GEOLOGY RECLAMATION MINING•SAFET7 Bill Owens Governor Greg E. Walther Executive Director Ronald W. Cattany Acing Division Director Listed below are adequacy review comments on the Fetcher Gravel Pit New 112 Application; Permit Number M-2002-119. The Division of Minerals and Geology (Division) is required to make. an approval or denial decision no later than March 26, 2003, therefore, your response to the following... . adequacy review cnncerns should be submitted to the :Division as soon as possible. 1: As required by Rule 1.6.2 (1)(g), please submit thf; proof of publication of the'public notice circulated in the local newspaper, all owners of record of surface lands, easement holderc_, and owners of record of surface lands that are within 200 feet of the boundary of the. affected land. Proof of notice may be return receipts of a Certifie d Mailing or by proof of personal service;. Rule 6.4.4 Exhibit D- Mining Plan 2. The applicant states that if water is encountered, e:ccavation will stop and the azea will be backfilled to cover the water. Please commit to covering any exposed groundwater with two feet of overburden material. The applicant states that a portable asphalt plant may be erected on the site from time to time. Please depict the location of the plant and associated structures on the Mine Plan Map, and include a plan to ensure the surface water and groundwater systems will not be impacted by such operations. 4. The operator plans to construct a sediment sump to trap all runoff from the 100 yeaz 24 hour event. The applicant states that the pond will be primarily incised, however, it is also stated that the dam will be less than 6 feet high and will have 2h: lv side slopes and water will seep through the embankment within 72 hours. Please be aware. that the Division does not require total containment of the 100 year 24 hour storm event. Typically check dams or smaller sumps are more than adequate to ensure that sediment is retained on the site. However, if the operator intends to construct this structure the following information must be submitted: • Please provide a more detailed map illustrating this impoundment structure including proposed slopes on the dam and the interior of the pond. • Please provide the calculation used to determine that water will seep through the embankment within 72 hours and a gradation of the material to be used. It is the