2010-03-12_REPORT - C1981019 (8)

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Compendium 4- EP046 - REVEGETATION DATA Ground Cover %) I+ Growing Seasons --> 2 4 7 9 30 r p '? 9 Year Sampled --> 2007 2009 2012 2014 2015 Perennial Grasses 22.S 26.6 n! Perennial Forbs 1.1 3.5 f Shrubs 0.2 0.2 _ Annuals / Biennials 33.6 32.6 Litter 16.7 24.4 Standing Dead - - Rock 0.7 0.4 Bare Ground 25.2 11.9 Groun 100% d Cover ao% E REVEGETATION SPECIFICATIONS A Unit:'; EP04 Acres:; 106.6 60% Location: East Plt First Growing Seaso- 2006 C 2009 Success Criterion = Topography: •.••• •........•... 43.1% Perennial Cover •••••• Aspect- ; SE - Avg. %Sb IL 40% Regrading Notes:; 20% Topsoil: Mo/Yr of Placement:) Depth of Placed Topsolli Surface Preparation:! 0% 2007 2009 2012 2014 2015 Soil Augmentation Activities Mo./Yr. Ibs/ac. Wood Plant Density Co untable Shr ubs Growing Seasons --> 2 i 4 1 7 9 10 Year Sampled--> 2007 - 2009 - 2012 2014 2015 Young & Mature per acre 43 92 Seeding Dominant Grass Spec ies* Woody Plant Density Methods! (Most Current Year :Onl y) 1200 Total s PLS / Acre:; 13.65 Seeded Species Percent 1000 Mo./Yr. of Seeding? R.I. cover u Species Seeded: # PLS/ac. Thickspike Wheatgrass 9.36 800 Grasses 3.46 Western Whea rass 7.27 n 600 Thicks Ike When rasa 0.34 Mountain Brome 3.16 y Streambank Wh rass 0.34 Slender Whea rass 3.10 > 400 Beardless Bluebunch W 0 67 streambank Wheat rass 2 97 RR 200 . western Whea rass . 0.79 g . 3 0 Slender Wheat grass 0.49 Mountain Brome 0.48 2007 2009 2012 2014 2015 Basin Wil a 0.20 Current Annual Producti on Pounds rAcre) - Rocky Mtn. Fescue 0.10 Growing Seasons --> 2 4 7 9 10 Big Bluegrass 0.05 Volunteers Year Sampler) --> 2007 2009 2012 2014 2015 Forbe 3.06 Cheer rasa 41.56 Perennial Grasses - - westem Yarrow, 0.04 Kentucky Bluegrass 10.18 Perennial Forbs - - Louisiana Sage 1.04 3a nese Brome 8.92 Sub-shrubs - - Padfic Aster 0.02 Smooth Brome 1.20 Annual Grasses - - Cicer Mflkvetch 0.30 Annual Forbs - Lewis Flax 0.09 Total Sainmin 1.45 *Taxa w/1%composition -taxa Palmer penstemon 0.06 counting toward diversity standard Current Annual Production 2000 Rocky Mtn. Penstemon 0.06 (3%<X<50%) are blue Shrubs 7.13 Remediation / Weed. Control Servicebeary, 1.69 Measures / Other Notes: 1600 Silver Sag, 0.06 Fringed Sage 0.01 BI Sagebrush 0 02 1200 Fourwing mitbush . 0.84 < Winterfat 0.51 y 1 goo Rubber Rabbifbrosh 0.04 Shrub Qualified* Acres . Mtelo Bltterbrosh 2.90 (>150Stems per Acre) Wood's Rose 0.48 Not Old Enough aoo Mountain Snowberry, 0.58 .Shrub patches were delineated using 0 300 stems per acre as a guideline. Therefore additional acres ma qualif 2007 2009 2012 201 , y y. 4 2015 RECOMMENDATIONS Diversi Small area of erosion that may need repair 2 perennial prassm between 3% and 50% Relative Cover Success Criteria: Annual bromes probably require attention in areas marked on ma Fort, Relative cover between 1% and 50% Reseeding in cheat rasa and sparse rennial cover areas would hel Growing Seasons --> 2 4 7 9 10 this unit along. Lear Sampled --> 2007 2009 2012 2014 201s Number of Perennial Grasses 4 5 Forbs (% Relative Cover) 21.4 6.7 CEDAR CREEK ASSOCIATES, Inc. Page 19 Colowyo Mine 2009 Revegetation Monitoring Report