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li <br /> ' � o . Transit Mix Concrete Co. <br /> NUMONONResponse: The area extending southeast from the plant area includes the discharge pipe <br /> from the Plant Sediment Detention Basin, as shown on the Exhibit G maps. This discharge <br /> pipe will be operational for the duration of mining; during reclamation, Phase 6, the <br /> discharge pipe is removed, and an open channel constructed to convey runoff from the <br /> reclaimed pit area to Little Turkey Creek. Details on this open channel have been included <br /> in the Exhibit E and G text. <br /> 28) Figures C-9b and C-9c show cross-sections of the F1 and F2 backfill areas with final slope <br /> configurations. Please provide similar cross-sections for these two backfill areas showing <br /> operation slope configurations. <br /> Response: The operational profiles for the cross-sections of the F1 and F2 backfill areas <br /> have been included in Exhibit C on Figures C-9b and C-9c. <br /> 29) Please specify the minimum distance that will be maintained between the toe of the F1 <br /> backfill pile and Little Turkey Creek. Please also specify the minimum distance that will be <br /> maintained between the toe of the pile and the proposed affected land boundary. <br /> Response: The toe of the F 1 stockpile is approximately 700 feet from Little Turkey Creek. <br /> There are additional affected lands at the toe of the F 1 stockpile for a sediment detention <br /> basin to remove sediment from runoff from the stockpile. The sediment detention basin is <br /> approximately 500 feet from the creek. <br /> 30) In Figure C-9c, the cross-sections of the F2 backfill area indicate that a ridge of unmined <br /> rock will remain along the northern edge of the pit. Please specify the anticipated height of <br /> the northern pit crest with respect to the pit floor and to Little Turkey Creek. (The Division <br /> understands the pit floor elevation will be maintained a minimum of 10 feet above the <br /> elevation of Little Turkey Creek). <br /> Response: A ridge of unmined rock will remain along the north edge of the pit. The top of <br /> this ridge will be between 30 feet and 80 feet above Little Turkey Creek and up to 50 feet <br /> above the pit floor. The north-facing side of this ridge will not be disturbed, and it will <br /> remain vegetated. Transit Mix will backfill against this ridge when placing stockpile F2 <br /> and grade this ridge but select rock outcroppings will remain in some locations. Sections <br /> of rock outcropping that are a maximum of 30 feet tall and less than 150 feet long may <br /> remain. These sections will be south facing and will not be visible from Little Turkey <br /> Creek Road. <br /> 31) In Figure C-9c, on the D-D' cross-section, the elevations on the right side of the cross- <br /> section(D' side) are not lined up correctly with the ones on the left side of the cross-section <br /> (D side). Please correct this error. <br /> Response: Figure C-9c has been revised to correct the elevations on cross-section D-D'. <br /> Hitch Rack Ranch Quarry(M-2017-049) <br /> Response to Comments—March 9,2018 <br />