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Summit Brick and Tile Company Fox No 1 Clay Pit <br /> M-1977-219 -Adequacy Response#2 Page 4 <br /> It is a hard sandstone material that according to our geologic <br /> information is part of Dakota Sandstone formation, same as the <br /> rock over the clay seams . <br /> 44.2 As required by Rule 6.4.4(g), please describe the intended use of the primary and <br /> secondary commodities to be mined/extracted. <br /> Clay, sandstone and borrow are the primary commodities to be <br /> mined. The clay will be used t.o manufacture brick, the sandstone <br /> is sold as stone product and for cement making and the borrow is <br /> used as construction backfill on jobs that need it . There are no <br /> secondary commodities generated at the mine . <br /> 44.3 As required by Rule 6.4.4(h), please clarify that no incidental products will be <br /> mined/extracted. <br /> No incidental products are produced at this mine. <br /> 44.4 The Applicant proposes to seed topsoil/growth medium stockpiles, which remain <br /> undisturbed for more than 180 days, with crested wheatgrass at a rate of 2 pounds PLS <br /> per 100 square feet. Crested wheatgrass is an introduced species that will aggressively <br /> complete with important native grasses and volunteer forbs and shrubs. Even though <br /> crested wheatgrass is not included in the seed mix to be used during final reclamation of <br /> the site, it will create a seed bank in the topsoil stockpile which will be transferred to <br /> other areas of the mine. The Division requests the Applicant replace crested wheatgrass <br /> with a native species, such as western wheatgrass, or utilize the final reclamation seed <br /> mix to help establish a beneficial seed bank or contact the local office of the Natural <br /> Resource Conservation Service (MRCS)to get a formal recommendation. Additionally, <br /> upon further review, the Division believes this seeding rate is in error as it yields an <br /> extremely high seeds per square foot rate. The Division understands this seeding rate will <br /> be high to help prevent wind and water erosion on topsoil/growth medium stockpiles, <br /> however for example, a rate more in the range of 40 PLS/acre of western wheatgrass <br /> (yielding 101 seeds per square foot) would be more reasonable. <br /> Summit will use Western Wheatgrass to temporally seed soil piles <br /> on this mine . Your suggestion of 40PLS/ac or 101 seed/sq-ft is <br /> also acceptable to us . On a typical soil pile that is 20, 000 sq- <br /> ft Summit will need to use 18 . 36 lbs PLS verses 400 pounds . I <br /> revised the text in Exhibit D page 5 (Revised 11/13/17) with this <br /> change and have supplied a copy for the file . <br /> 45. In response to Adequacy Item#16, the Applicant provided a blasting plan, dated July 22, <br /> 2002. Due to the scope of AM-03,this previously submitted blasting plan is outdated and <br /> is potentially obsolete. The Division cannot recommend an approval of AM-03 without <br />