PERMFILE139435

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 6/14/1985
• From: MLRD
• To: COLOWYO COAL CO
• Section_Exhibit Name: Gulch A sed pond
• Media Type: D
• Archive: No

-17-
h1r. Richard Atkinson
• Nwy 14, 1981
Pac;~ Three
r,
Reviewing the reference "Agricultural Handbook No. 537" USDA, 1978,
recommended in The F.dequacy Review, we concur that this reference is betfer
for selection of the C factor as additional factors such as land slope and slopz
(encth limifs are conssdered. From the tables 9 cnd 10 of this reference we
then selected these values cf CS:
Condition CS
Area being reclaimed
Sta•,v mu cn, 2T/ace, on slopes 26°o to 33',0 0.17
Ur.dist•.;rbed and fully restc~ed crew
No oporecia z ~nopy, gra<_s, 80";o ground cover 0.013
Averace condition in area being reclaimed
Avzrcge bet.veen stave mulched crew and fully
restored area eouc I to 5~ ~ {0.17 + 0.013) 0.092
• Next t'r,e minim and re_.`c•rc`ion operctions were reviewed a^.d the prepa^tiens
-
of'the ereos under reclcmction cnd undisturbed or
fully reclaimed w ere estimated
for Streeter Gulch and GuIG. A. (Taylor Gulch v+as not estimated as mining pre-
aression through
this area is sche-duled for efter the yea r 2000, and therefore nat of
•
immediate concern.) The results are os listed:
Aaea {acts) °,o
Areas . Disturbed . Undisturbed Disturbed Undisturbed
cnd and under or cnd under or
Years reclcmation{1) fully reclaimed reclamation fully reclaimed
SMeeter Gulch (1367a)
1941-1906 139 1229 10.2 89.8
_.1986-1991 i81 1186 13.2 85.8
1991-1996 112 1255 8.2 91.8
1996-1999 41 1326 3.0 97.0
Av = 8.6 Av = 91 .4
Gulch A (667a)
1981-1486 14 653 2.1 97.9
1986-1991 76 591 ~ i1.4 E8.6
1991-1996 167 500 25.0 75.0
1996-1949 i55 512 23.2 76.8
• Av = 15.4 A.v = 8=:.6.6
(1} Assuming 5 years from first disturbance of on area .
until area fully reclaimed