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111111tlliiittilili ~ <br />~~ Banks and Gesso, LLC <br />~~ <br /> <br />720 Kipling St.,Suite117 <br />Lakewood, Colorado 80215 <br />(303) 274-0277 <br />Fax (303) 274-8329 <br />www. ba nksandgesso. corn <br />R~C~~ED <br />February 10, zooo FE9 ~ 1 ~ppp <br />~,~,w.,otMt~~af6~9 <br />Christina Kamnikar <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Subject: Technical Revision 001, Permit No. M-77-208, Lyons Quarry, <br />Southdown, Inc. Response to Second Adequacy Review <br />Dear Christina: <br />We are in receipt of your letter of January 28, 2000 and Southdown herein commits to <br />the requested provisions contained in that letter with the following clarifications. <br />Southdown will perform the required monitoring for five consecutive quarters and <br />thereafter the monitoring shall be twice per year as was stipulated In the previous <br />submittal. Southdown requests that the Division also consider the many years of pH <br />measurements taken al the discharge point from A-Pit pursuant to their CDPS permit. <br />This will provide additional baseline data. <br />The Division will set numeric water quality standards for the monitoring and compliance <br />point and Southdown requests that these be grounded in adopted Stale standards. <br />Southdown would also like the Division to consider ambient water quality in lts setting of <br />numeric standards. <br />Aftcr the numeric standards have beer, set any exceedances will be reported to the <br />Division immediately. A written report will be submitted to the Division within five (5) <br />working days. <br />Please let me know If this is sufficient to approve the Technical Revision. <br />S' rely, <br />~~~ <br />Paul Banks <br />PB/kj <br />Cc: John Lohr <br />