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~,1 <br />ST~T~ ~e~ <br />OF <br />COLOiZADO <br />DIVISION OF MINERALS AND GEOIOGr <br />Druanmrm of Natural Rrsuurcts <br />I{ l i 5hcrm, n $1.. Room '_ 1 5 <br />Ormrr. Colvradn BO'_0] D I ~~ S I O ~ O F <br />Phnnr'~,0ll ann~;,r.r M I N E RA l5 <br /> <br /> MEMIO GEOLOGI' <br /> 0. E C l f H A C I O N <br />MIN IN(, •$RFE" <br /> MINERALS PROGRAM POLICY <br /> Bdl O..en. <br /> Co.rmn• <br />T0: Minerals Staff r,,re E. ,,.~„1,~•• <br /> E,rcmirr D~rr<wr <br />FROM• HBH ~,4'~r18 Lnn. <br />DATE: March 29, 2000 <br />RE: Policy On Application Reviews Invo{ving Lined Sand and Gravel Pits <br />The Division has received comments from applicants and their consultants concerning Division <br />request fot design information related to lined sand attd ,avel pits. These comments questioned <br />the need for such information, as well as the Division's technical ability to review it. <br />It is cleaz that the Division has a need for such design information in order to calculate an <br />appropriate reclamation bond. It is also cleaz that the Division has the technical expertise <br />necessary to review the engineering evaluations and c.esigns. However, it is correct that the <br />actual authority to review and approve such designs r.;su with the Office of the State Engineer <br />(SEO). This review and approval authority is cleazly stated in their "Proposed Guidelines for <br />Lining Criteria For Gravel Pits"(8116/99), and verified through conversations with personnel in <br />the Office of the State Engineer. , <br />Therefore, the Minerals Program will no longer approve engineering designs For installing liners <br />that aze intended to meet SEO water rights protection criteria. An applicant, however, shall be <br />required to provide DMG any of the following in order to demonsuate compliance with Section <br />3.1.6 of the Construction Material Rules: <br />• A copy of the SEO's letter approving the proposec liner design and a copy of the design and <br />specifications for inclusion in[o the applicant s application prior to the Division's approval or <br />recommendation date, or <br />• A commitment to stay at least two feet above the historic highest ,ound water level together <br />with an adequate means to monitor compliance, or <br />• A bond adequate to backfill the pit to two feet above the historic highest ground water <br />elevation, or <br />• A letter from the SEO stating that the applicant ha> satisfied the SEO requirements for an <br />augmentation plan or substitute supply plan for grl>und water exposed to evaporative loss and <br />lhas an associated well permit. <br />