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Banks and Gesso LLC <br /> Exhibit G —Water Information <br /> At the time of the original permit review in 1996, the Substitute Water Supply Plan (SWSP) was <br /> not complete; however, it was submitted to the DRMS in October 1996 prior to final issuance. <br /> The SWSP has since been updated and approved by the Division of Water Resources. A copy <br /> is attached under Attachment E. <br /> Water-General Requirements <br /> Disturbance of the area will be done to minimize the effect on the prevailing hydrologic balance <br /> as follows: <br /> a. The operator shall comply with all applicable Colorado water laws. <br /> b. The operator shall comply with all applicable federal and State water quality laws and <br /> regulations. <br /> c. The operator shall comply with all federal and State requirements for dredge and fill. <br /> d. The operator shall regrade all sediment in siltation structures after mining is completed. <br /> Surface and Groundwater-Specific Requirements <br /> Evaporative loss of groundwater will be addressed in the SWSP and its associated <br /> augmentation requirements. The operation will not affect groundwater quality on or off the site. <br /> The operation will comply with all State groundwater quality standards. The Maryland Creek <br /> Ranch will be operated similar to the applicant's Silverthorne Pit where there have been no <br /> water quality violations or problems. <br /> In the wash plant, water will be recycled to settling ponds. In addition, a clarifier with flocculants <br /> will be utilized to assist in the settling out of suspended solids. Flocculants are not a hazardous <br /> or toxic material. The water recycled in the washing operation will not be released into any <br /> waterways. The clays and silts salvaged from the washing operation will be used as fill material. <br /> All chemicals and materials used in the concrete and asphalt plants will be stored and handled <br /> properly according to separate permits with the Colorado Department of Public Health and <br /> Environment. Due to the absence of any pollutants, groundwater quality monitoring is not <br /> required in this operation. <br /> Dewatering is not conducted at the project site. A water quality pond will be used to impound the <br /> first flush '/2 inch of runoff from disturbed areas. A detention time of 25 to 40 hours will be <br /> targeted. Diversion ditches and/or berms will be used to route all flows from disturbed areas into <br /> ponds. A perforated stand pipe outlet surrounded by a gravel pack will be used as an outlet. A <br /> copy of the Stormwater Management Plan can be found at Attachment F. The Plan was <br /> developed as a part of the requirements for the Stormwater Discharge Permit application to the <br /> Colorado Department of Public Health and Environment. This document addresses the storage <br /> and containment concerns for all aspects of the mining operation and also includes information <br /> regarding the asphalt and concrete batch plants. <br /> The known aquifers within the permit boundary, from largest to smallest, include: 1) the <br /> alluviums of the Blue River, which underlies the area between State Highway 9 and the steep <br /> break in slope approximately 1000 feet to the west; and 2) the alluvium of Maryland Creek, <br /> which underlies-the creek from its connection with the Blue River alluvium to the western edge <br /> of the permit boundary. <br /> Everist Materials,LLC-Maryland Creek Ranch Amendment#2 09034 <br /> M-1996-049 February 2010 <br /> Page 14 of 35 <br />