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lFtit39i90 15: 5t7 <br />• • <br />003 <br />Mr. GrcRR 6quirc 2 Nay 28, 197 <br />(:olv. Mined I,And Rr:cl. Divi.^.ion <br />Effective cover to meet the standards will utilize a combination of hu-o:.r..:I:u6 <br />~uver and litter cover. A historic average percent litter foe for was ee:S.l~r~~ <br />1a[ed trom 14/9 and 1985 cover data, Table 2. To obtain the level of 1-' ' <br />ceuus CUVCL required by [he etendard~ the hiaroric average percent liC". .. ::,.¢-• <br />for is multiplied times the needed effective cover and the result is sub- <br />tracted Irum total effective cover required by the standard. For example, xet <br />us say SD% t~l'C~:~tive cover is necessary to result in not exceeding 4 <br />tons/A/yr, the calculatluu would [lien proceed As fnllowe: <br />(50>; effective cover)(.372 avg X litter factor) Table 2 ~ 18.6X litre.=. <br />(SOY, effective cl~v~:r - 18.GY, litter) ~ 31.4X herbaceous cover. <br />Thus, in this case the effective cover reclamation standard tpulri ':e no L:~ua <br />than 31C actual herF>aceuus cover and ^u more than 19X actr ~ "..___.r uW ~::~.. <br />AtCUaL linter cover may exceed 19Y, but only 19Z actual li: '•.:~~ ~~ <br />~:sed tv moat the standard. <br />Based upon sn analysis of potential nail erosion, Table 1, '..~ , <br />tivr cover stenrlardn wall out result in excessive poatmins ..~~•i -:'h._. <br />Fr ev Ln,nly 'trapper has pleseuted several proposals for herb. •~::.: co.•,. <br />upon regression analy5i5, Oue to the urgency of gettin; ~ ov o~ <br />rev is inn PR-1 and Pit-2, we are aubmi[t inR Chis proposed acv _. __..~.cr .c <br />cum promi se. Howpvar, Trapper re sr.rves the right to rev fait t'a~ r.c~: .:r _ ..~ <br />a future Lime if circumstances so dictate. <br />Best r//enn~~Rarde, <br />AJ/V4L/r~ .'' <br />H, Bruce Humphries <br />Sr. Environmental E~.;;'.c _.. •. <br />~ hl': <br />.~~u~ i, i,.,, <br />rltn~i, ~. <br />~.,„ta, CMLR:f <br />'.n n~:, C'4LHp <br />., ~-1 ~, Icr.aon, "fr ~r <br />