Substitute Water Supply Plan Forum September 1 2004

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DRAFT GENERAL GUIDELINES FOR SUBSTITUTE WATER SUPPLY PLANS FOR SAND AND GRAVEL PITS SUBMITTED TO THE STATE ENGINEER PURSUANT TO SB 89 -120 & SB 93 -260 In 1989, the Colorado Legislature passed Senate Bill 120 that affects gravel pits in operation after September 31, 1980. §37- 90- 137(11)(a)(11), C.R.S. requires any gravel pit that exposed ground water to the atmosphere after December 31, 1980 Lo replace all �o�nf prio�etions of ground water. In 1993, the Colorado Legislature passed Senate Bill 260 that bask-ally-changed the fees associated for review of the substitute water supply plans. To maintain consistency and to streamline the review process, the Office of the State Engineer is requesting substitute water supply plan applications for sand and gravel pits submitted pursuant to Senate Bill 89 -120 and Senate Bill 93 -260 follow the format presented below, where applicable. These general evaluation guidelines are provided to assist the applicant preparing the substitute water supply plan request and are not to be construed as formal policy making procedures. Even though most of these guidelines are engineering related issues, there are some that contain policy issues by the State Engineer as well as statutory requirements. PROJECT DESCRIPTION 1. A narrative description shall be submitted summarizing the water resource aspects of the proposed or existing operation including water usage and consumption and a proposed plan for replacing out -of- priority depletions. 2. Two maps should be provided showing the water resource aspects of the operation, including the existing or proposed lake(s), streams, wells, ditches, dewatering pumps and trenches, - points of discharge for the washing and dewatering operations, and slurry walls or liners both on and off the property which may affect the timing of lagged depletions. One of the maps should be a USGS 7 -1/2' quadrangle. The second map can be hand drawn showing current, proposed and ultimate lake surface area. The scale, section, township, range, and principal meridian should be clearly identified on each map. Additionally, aerial photographs (if applicable) need to be provided delineating the lake surface area prior to January 1,1981 and after.