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Transit Mix Concrete Co. <br /> Response: Figure 1 is a reduced copy of Exhibit C-2, and a copy of Figure 1 has been <br /> included in Exhibit S. <br /> EXHIBIT T <br /> 121) In the Hazardous Materials Management Plan, please revise the Spill Reporting Procedures <br /> to include, at a minimum, reporting to the Division all the following items per Rule <br /> 3.1.13(2): <br /> a) Operation name, DRMS permit number, and name of person reporting the spill, <br /> b) Telephone number of a responsible company official for the Division to use as a <br /> contact, <br /> c) Date and time of the spill <br /> d) Type of material spilled [CAS number if applicable, from the material safety data sheet <br /> (MSDS) form], <br /> e) Estimate of the amount spilled, whether any material has left the permit area, and where <br /> the spilled material went, and <br /> f) Initial measure taken to contain and clean up the spill <br /> Response: The Hazardous Materials Management Plan has been updated to include the <br /> information listed above. <br /> 122) In the Hazardous Materials Management Plan, per Rule 3.1.13(3), please commit to <br /> copying the Division on any correspondence and/or written reports provided to other <br /> agencies (pertaining to a spill), and supplementing those reports if necessary to include the <br /> information outlined in Rule 3.1.13(2). <br /> Response: Transit Mix commits to copying the Division on any correspondence and/or <br /> written reports provided to other agencies that pertain to a spill. <br /> Geotechnical Stability Exhibit(Rule 6.5) <br /> 123) On page 2 of the Waste Stockpile Stability Analyses, in Table 3.1 — Design Criteria for <br /> Waste Stockpile Stability, the value given for Operation Inter-bench Slope Angle is <br /> 1.7H:IV. Please clarify whether slopes of all fines/overburden stockpiles and backfill areas <br /> (F1, F2, and F3) will be maintained at 1.7H:1V during operations. If so, does the bond <br /> estimate (in Exhibit L) include costs for grading all fines/overburden pile slopes in mining <br /> phase III from 1.7H:1 V to 3H:1 V? This reclamation task should be separated from all other <br /> earthwork tasks in the bond estimate, and also separated by pile. Additionally, please be <br /> sure the proposed operational slope gradients for these stockpiles is provided in Exhibit D. <br /> Response: The mine will be practicing contemporaneous reclamation as soon as available <br /> area is regraded. This will be carried forward through each of the phases. During Phase III <br /> the north facing areas of F 1 and F2 will have already been regraded to the design <br /> reclamation slope. The fines/overburden stockpiles are all placed by end-dumping at the <br /> angle of repose, which is assumed to be 1.7H:1 V based on the material properties. This <br /> Hitch Rack Ranch Quarry(M-2017-049) <br /> Response to Comments—March 9,2018 <br />