2016-07-14_PERMIT FILE - M2016010 (4)

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r o Transit Mix Concrete Co. intercept groundwater, if present. Per their recommendations,one well should be located along the western boundary of Section 16, 500-1,000 feet south of Little Turkey Creek. The other well should be located along the eastern boundary of Section 16, or perhaps along the existing roadway, 500-1,000 feet south of Little Turkey Creek. BBA recommends that monitoring include monthly water level measurements and at least two analyses of water quality(during spring runoff and during fall or winter)to establish baseline conditions. BBA recommends these wells be completed outside of the creek fault zone. Has the applicant installed the recommended wells or have plans to do so before disturbing the area south of Little Turkey Creek?The Division agrees that installing deeper wells(outside of the creek fault zones)would be beneficial in monitoring impact to water levels of the basement rock groundwater system. The applicant should consider including these wells in the required groundwater monitoring program. Response: The proposed Water Monitoring Plan is included in Exhibit G. The Plan includes monitoring surface water quality and quantity along Little Turkey Creek and Deadman Creek and monitoring water quality and groundwater levels along the creek fault zones using monitoring wells. Groundwater is not expected to be encountered outside of the fractured areas,actual impacts of mining will be monitored with the proposed monitoring wells and the location previously discussed for the monitoring wells outside the productive fractured areas is difficult to access. For these reasons,Transit Mix is not currently pursuing the monitoring wells outside of the fractured areas and will rely on the proposed monitoring wells within those areas near the creeks to monitor groundwater impacts. Proposed Water Uses, Operations and Demands 171) Comment: Per Rule 6.4.6(1), you must provide an estimate of the project water requirements including flow rates and annual volumes for the development, mining,and reclamation phases of the project. The applicant gave an estimated volume for the mining phases(30 acre-feet/year);however,no estimate was provided for the reclamation phases. Please provide this estimate. Response: Reclamation will occur using native species adapted to the area climate, and no irrigation is anticipated. 172) Comment: The text states that sanitary return flows will be contained in a vault or storage tank on site,then pumped and transported off site for disposal. Please describe here or show on one of the figures submitted the estimated location of the proposed vault or storage tank. Response: There will be one vault located at the scale house and one vault located at the shop facility in the plant. These will be shown on the figures in Exhibit L. These exhibit will be included in a revised permit submittal provided to CDRMS on or prior to July 22,2016. Hitch Rack Ranch Quarry(M-2016-010) Response to Comments—July 14, 2016