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~•`' <br />5 iAT~. OF ~OLOiZADO <br />DI VI $ION OF MINERALS AIVD GEOLOGY <br />Dru.rr,mrm w NdWrJI Frwurtti <br />Drm rr. Cnlor,ido 80'0] <br />7hunr' , SO 11 Bhn-; ii,' <br />MEMO <br /> <br />D~`/I S Ip~ Df <br />,ti INERnLS <br />Lt <br />GEOLOGI' <br />a c~ l< n a- 1 0 N <br />I'II NINQ.f~F~~' <br /> L5 PROGR4M POLI <br />MINER <br /> 4 <br />CY <br /> s,u Gtitn. <br /> Cmrmn• <br />T0: Minerals Staff crr. t ".,I,I,~., <br />e.r~„,Lr D•~raur <br /> <br />FROM: <br />HBH ~~,r ~..J ,_ \IIC1Jl' d ll,n~ <br />o,.,,,,,na,«,n, <br />DATE: March 29, 2000 <br />RE: Policy On Application Reviews Involving Lined Sand and Gravel Pits <br />The Division has received comments from applicants and their consultants concerning Division <br />reques[ for design information related to lined sand and gravel pits. These comments ques[ioned <br />the need for such information, as well as the Division's technical ability to review it. <br />I[ is cleaz that the Division has a need for such design information in order to calculate an <br />appropriate reclama[ior, bond. It is also cleaz tl;at [he Division has the technical expertise <br />necessary to review the engineering evaluations and designs. However, it is correc[ that the <br />actua] authority to review and approve such designs resu with the Office of the State Engineer <br />(SEO). This review and approval authority is cieazly stated in their "Proposed Guidelines for <br />Lining Criteria For Gravel Pits"(8/16/99), and verified through conversations with personnel in <br />the Office of the State Engineer. <br />Therefore, the Minerals Prop am will no longer approve engineering designs for installing liners <br />that are intended to meet SEO water rights protection criteria. An applicant, however, shall be <br />required [o provide DMG any of the following in order to demonstra[e compliance with Section <br />3.1.6 of the Construction Material Rules: <br />• A copy of the SEO's letter approving [he proposed liner design and a copy of the design and <br />specifications for inclusion into the applicant 5 application prior to the Division's approval or <br />recommendation date, or <br />• A commitmen[ to slay at least two feet above the historic highest ;round water level together <br />with an adequate means [o 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 tha[ [he applicant has satisfied the SEO requiremen[s for an <br />augmentation plan or substitute supply plan for ground water exposed [o evaporative loss and <br />_has an associated well permit. <br />