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C- 1981 -008 <br />PR -06 AR #5 <br />August 25, 2010 <br />Page 21 of 26 <br />67B. This item requested the refinement of Map 2.04.9 -2 to accurately depict the limits of the active <br />pit, backfill progress (partial and to- grade) and topsoil distribution as they existed in February <br />2008. The map has been revised somewhat, but the symbols chosen are very similar to one <br />another. Please select map symbols that allow the different phases of operation to be readily <br />discerned. <br />68 -74. Previously resolved. <br />74a. Contour labels on Map 2.05.4 -5 are now presented in larger font. Item Resolved <br />Section 2 — Additional Items from Informal Conference <br />75. Previously resolved. <br />76. Previously resolved. <br />76A. This Item pertains to amended Spoil and Soil Suitability Tables 2.05.4(2)(d) -lA and (d) -1B, <br />which comprise only one table in the currently approved permit The Division requested <br />separation of the table into two tables (as provided in the response), and recommended a number <br />of specific revisions. The tables were amended in response to the Division's recommendations, <br />although there were a number of disparities. We have the following comments and requests: <br />a. On Table lA and 1B, all of the threshold levels with the exception of pH are listed so as to <br />identify "unsuitability" threshold levels for particular parameters. For pH the "Acceptable <br />Range" is presented instead. Please list the "unsuitability" levels for pH, as specified in the <br />Division version of the table, to be consistent with the remaining parameter listings, and <br />delete footnote #4. <br />b. On Table lA and 1B, the lower threshold for pH was changed from 6.1 to 4.5, with no <br />explanation or justification. Please provide an explanation (e.g. NRCS definition) for the <br />changed threshold. <br />c. There are problems regarding >/< symbols for certain parameters and soil zone categories on <br />Table 1A. For EC, Threshold Level Column 1 lacks > in front of 4, Columns 2 and 3 lack > <br />symbol in front of 6 and the < symbol in front of 5 should be a > symbol. Column 4 lacks a <br />> symbol in front of 8. For Boron, Columns 3 and 4 lack a > symbol in front of 5. <br />d. The Table I footnote for Zones 1 &2 is incorrectly worded. The correct wording is <br />"...areas where Lift A Topsoil or Mixed Lift Topsoil is placed directly on Bench 1 Subsoil <br />Substitute (no Lift B Topsoil is present) ". <br />There are problems regarding >/< symbols for certain parameters and soil zone categories on <br />Table 1B. For EC, all of the threshold levels listed lack the necessary > symbols. Boron <br />lacks the > symbol, for Bench 1 Surface Spoil. <br />f. On Table l B, the rock fragment threshold for Zone 8 mixed topsoil (Below 2 feet) is <br />incorrectly listed as "N /A'; the correct threshold listing is "535 % ". Also on Table 1B, the <br />cell for Zone 8 Rock Fragment content was left blank; should be "NIA ". The Sample Grid <br />for Zone 7 Mixed Topsoil should be 1 per 5 acres, rather than 1 per 2.5 acres. <br />Please amend the tables as warranted. <br />