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DRMS Response: The Soil Survey Map, Map 2, has been revised to a scale of 1 inch = <br />500 feet. The soil types according to the NRCS classifications are not designated. <br />However, the soil sample locations aze mazked and Northfield has provided soil analysis <br />by horizon for each of the soil sample locations. Response accepted. <br />21. Please provide the proposed seed mix for use on the topsoil stockpile. (Rule 4.09) <br />Northfield Response: A temporary seed mix was added to page 2.05.4-10. <br />DRMS Response: The proposed temporary seed mix for use on the topsoil stockpile was <br />provided on Table 2.05.4-3. The proposed mix includes both yellow sweetclover and <br />alfalfa. The Division recommends removing the sweetclover from the mix as it tends to <br />persist and spread. With the removal of the sweetclover, the mix will be acceptable. <br />Please remove sweetclover from the mix and re-submit the text page. <br />22. NP has committed to salvage six inches of topsoil. Based on the soil sampling, it appears <br />that the soil deeper than 6 inches is a suitable growth medium. Reclamation experience <br />shows that replacing 12 inches of topsoil on the surface after grading will improve plant <br />growth. The Division recommends that at least 12 inches of topsoil be salvaged. Please <br />note that the objective of reclamation is to mimic the surroundings and blend the <br />reclaimed site with undisturbed area. Therefore, rocks and gravelly material from the <br />surface should not be discarded, but should be salvaged with the soil cover. (Rule 4.09) <br />Northfield Response: Permit text has been changed to reflect a change in soil recovery <br />depth. <br />DRMS Response: In their NP has committed to salvage ten inches of topsoil. The <br />Division had recommended a minimum of 12 inches to be salvaged and it is not cleaz <br />why NP proposed 10 inches. As stated earlier, experience shows that replacing 12 inches <br />of topsoil on the surface after grading will improve plant growth. The Division had also <br />recommended that rocks and gravelly material from the surface should not be discarded, <br />but should be salvaged with the soil cover. NP did not address this suggestion. The <br />gravelly material could be included in the 12 inches. Please explain why 10 inches was <br />proposed and discuss whether the surface rocks and gravelly material will be <br />salvaged and stockpiled. <br />23. NP has committed to survey and determine the volume of the stockpiled resource on page <br />2.05.4-6. Please add to this commitment that the volume of topsoil will be reported to the <br />Division and included in the permit application. (Rule 4.09) <br />Northfield Response: Permit text was editing to commit to stockpile surveys. <br />DRMS Response: NP committed to survey the topsoil stockpile following construction. <br />The permit will need to be revised with a minor revision to update the permit with the <br />stockpile volume data. <br />