2015-07-27_REVISION - M1980183 - Laserfiche WebLink

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Brannan Sand & Gravel Company July 27, 2015 Page 2 of 3 3) The Division has reviewed the pre -mining groundwater data submitted with the original permit dating back to 1980. The Division specially look at the groundwater elevation along the course of the french drain from A to A'. The pre -mining groundwater elevation at A was approximately 5007 feet while at A' the groundwater elevation was approximately 5005 feet (enclosed groundwater contour map). This is an approximate 2 -foot elevation change over the course of where the proposed french drain would be, from A to A'. The design proposes setting the french drain elevation at 5010 at A feet and 5007 feet at A'. The proposed french drain design has a 3 -foot change between A and A'. The Division believes that the gradient of the french drain should closely match the pre -mining groundwater gradient. Please lower the design elevation of A by 1 foot, to 5009 feet. If the applicant lowers the design elevation of A by 1 foot this will closely mimic the pre -mining groundwater gradient and elevations. EXHIBIT N - Source of Legal Right to Enter (Rule 6.4.14): 4) The western portion of the proposed french drain crosses property owned by Adams County. Please demonstrate that the Applicant/Operator has legal right to enter the property owned by Adams County to construct the french drain. EXHIBIT L - Reclamation Costs (Rule 6.4.12): 5) Please see the enclosed cost estimate. The Division has accepted your cost to construct the french drain and has accepted other cost provide by you in previous permitting actions. The Divisions has also enclosed the cost estimate from AM -01. Please review the enclosed cost estimate, and provide any comments you may have. EXHIBIT S - Permanent Man -Made Structures (Rule 6.4.19): 6) Please demonstrate that the Applicant/Operator has attempted to obtain structure agreements with any owner of a permanent man-made structure located within 200 feet of the affected area where the french drain will be constructed. In accordance with Rule 6.4.19, when mining operations will adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected area, the Applicant/Operator may either: a. Provide a notarized agreement between the applicant and the person(s) having an interest in the structure, that the applicant is to provide compensation for any damage to the structure; or b. Where such an agreement cannot be reached, the applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c. Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. d. Please provide evidence (such as proof of delivery of certified letter to structure owners) that a notarized agreement between the structure owners and the applicant was pursued. If an