2010-03-12_REPORT - C1981019 (8)

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r AOL w Ak MF • • • • • Adlilk Ask Mills Allift, MF Adh 1W Ask Adk AOL Adis, Ask, 7 as _ Compendium 1 - EP037 ` Itl r f? REVEGETATION DATA Ground Cover om Growing Seasons --> 2 4 7 9 10 lrl, a'I . Year Sam ed - > 2004 2006 2009 2011 2012 + i { l Perennial Grasses Perennial Forbs Shrubs Annuals Biennials Litter Standing Dead Rock Bare Ground 8.4 1.6 - 48.9 24.3 - 0.4 16.4 28.3 2.8 0.5 23.8 42.3 - 0.2 2.0 45.2 9.3 - 11.8 27.3 ' - 6.1 Ground Cover 00% 1 80% REVEGETATION SPECIFICATIONS Unit:, EP03 Acres:, 21.7 Location: '1 East Pit First Growing Season:) 2003 .. 60% a - 2009 Success Criterion = . Topography: „ .. ........... 43.1% Perennial Cover ...... ..... .................................... Aspect: SE Avg. %Slope: o. 40% Regrading Notes: 20% Topsoil: Mo/Yr of Placement; Depth of Placed Topsoil 0% Surface Pre rationa 2004 2006 2009 2011 2012 Soil Augmentation Activities Mo./Yr. Ibs/ac. W Plant Density Cou ntable Shru bs Growing Seasons --> 2 4 7 9 10 Year Sampled--> 2004 2006 2009 2011 2012 Young & Mature per acre 13 59 4 Seedin Dominant Grass Speci es* Woody Plant Density 2 0 Method:; T tal ft PLS / Acre: 13 65 Most Current Year Onl y Pat nt R.I 1 0 1000 . o Mo./Yr. of Seedin I Seeded Species e . cO1ef u Species Seeded: sPLS/ac. Thickspike Wheatgrass 26.18 800 b Grasses Thkks ike Whea ress 3.46 0.34 Western Wheat grass Streambank Whea re55 20.18 6.90 600 4 400 Streambenk Whee rasa 0.34 Basin Wild rye 1.58 Beardless Bluebunch w. 0.67 Slender When rasa 1.05 200 Western Whea rass 0.79 0 Slender W rays Mountain Brame 0A9 0.48 2004 2006 2009 2011 2012 Basin Wild a 0.20 Current Annual Productio n Pounds rAcre) Roc Mtn. Fescue 0.10 Growing seasons --> 2 4 7 9 10 Big Bluegrass 0.05 Volunteers Year Sampled --> 2004 2006 2009 2011 2012 Forbs 3.00 Chew rasa 15.23 Perennial Grasses 1,632.3 Western Yarrow Louisiana Sage 0.04 Siberian Whea rass Kentucky Bluegrass 4.95 4.13 Perennial Forbs Sub-Shrubs 54.2 - Pacific Aster Cker Milkvetch Lewis Flax Annual Grasses Annual Forbs Total - - 98.5 19.3 1,80 .3 Sainfoin Palmer penstemon j * Taxa W/ 1% composition - taxa counting toward diversity standard Current Annual Production 2000 Rocky Mtn. Penstemon (3%<X<50%) are blue Shrubs Retnediation / Weed Control Semicaberry Measures / Other Notes: 1600 Silver Sag. 0.06 Fringed Sag, 0.01 B' S b h 0 02 200 < age rus Fourwing saltbesh Wimerfat . 0.84 0.51 * 1 800 Rubber Rabbitbrush 0.04 Shrub Qualified Acres 0 2009 Success Criterion = Anteb Bitterbrush Wood's Rose 2.90 0.48 (>1S0 Stems per Acre 0 05 Acres G 400 nnlal Ibs acre ................................ .....x.48 .....Pe:4........1......... Mountain Snawberry 0.58 . *Shrub patches were delineated using id li 300 0 stems per acre as a gu ne. e additional acres may qualify. Therefore 2004 2006 2009 2011 2012 , RECOMM ENDATIONS Diversity Unit seems to be progressing well. S 2 Perennial grasses between 3% and 50% Relative Cover C it i increase effort for noxious weed control uccess r er a : Farb Relative Cover between 1% and 50% Growing Seasons --> 2 4 7 9 10 Year Sampled--> 2004 2006 2009 2011 2012 Number of Perennial Grasses 0 4 5 Forbs % Relative Cover 0 8.1 15.2 CEDAR CREEK ASSOCIATES, Inc. Page 13 Colowyo Mine 2009 Revegetation Monitoring Report