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2,211,500
<br /> 2,21 ,000 2,21 ,s00 2,21 ,000 z,21 ,500
<br /> fifi
<br /> o •s General Construction Notes:
<br /> E Ma Legend o
<br /> 5 p g 1.Unmined aggregate to be stockpiled in designated aggregate stockpile area. o
<br /> o —•• 2.All material excavated from the wetland mitigation area (except unmined aggregate) to be placed in soil disposal
<br /> Drain(to be removed by contractor)
<br /> RECEIVED area or into existing lake as shown in section A-A'.
<br /> T H Typical Cross-Section 3.Over excavate approximately 0.25' (or 1,600 CY) to accommodate topsoil placement. Place approximately 2,500
<br /> B CY of topsoil from the existing pile in wetland and soil disposal area. (minimum 0.25'). Material from silt
<br /> Site Access DEC 0 b 2016 stockpile (noted in legend) to be mixed with topsoil to meet minimum requirement. Silt may not exceed 25%of
<br /> /N/ Index Contour(10 ft interval) a li r`T• topsoil mix. i
<br /> DIVISION OF RECLAMATION �y�"" '' 4.Balance of excavated material between wetland and soil disposal area to be pushed into lake to flatten shoreline
<br /> Intermediate Contour(Varies) fit� ! and create wetland bench (see Section A-A').
<br /> MINING AND SAFETY •0 '"� 4 5.Finished grade tolerance +/-0.2'. Upper 4" should be loose and friable condition suitable for planting or seeding.
<br /> Existing Topsoil Stockpile(=11,100 yd') '. tR ► ;7
<br /> C3 Existing Silt Stockpile(=9,400 y
<br /> � d') - .�• a • ♦ G.Contractor is responsible for control of pollution and erosion throughout duration of contract.
<br /> 7. Contractor is responsible for any dewatering needed, including a state discharge permit.
<br /> Soil Disposal Area(=27,000yd) •�+ �• l 8.Contractor is responsible for utility locations and for all permits (except for Section 404 Permit).
<br /> Unmined Aggregate(-24,000 yd)
<br /> Aggregate Stockpile(2.2 Ac) +iyr. �•lr���+"r '. ,�f�f j,.� ��6460 h r' ' tt' 1r- .'� K-?./747�:ytr� ': 'p'� „I r .t �, ' .` ., • k4� , . su
<br /> Wetland Mitigation Area =48,500 yd ) `' i 64e '� a'
<br /> (including unmined aggregate) ,�� GL • '4 '•
<br /> ,.r Emergent(1.77 ac) .�•
<br /> } (Finished El.6,419 ft.) +r+,.�•. •.
<br /> v Semi-Emergent(2.08 ac)
<br /> L. S (Finished El.6,419.5 ft.) b t o p }
<br /> 4 ! •s� i 1
<br /> ti , IR /: 64t9 K
<br /> 7 • ► ~ ' \ v `
<br /> r.
<br /> ;7W " x \ 0 1
<br /> Aggregate Stockpile Area
<br /> ► ' �,� 1 —r AGGIR�EGAT PO '� ' �. % A •�. ,
<br /> • ` . �:�.� (4.2 Acre � �\ � •t� •'I +� f ji �' a ,• � s
<br /> N ' Soil Disposal \ _ i+ o 'r
<br /> Area(2.4 ac)
<br /> rI. ♦+t f r�\\ 4]9A hlnvert Ei.6
<br /> '` ""• - Y
<br /> f,
<br /> v.' .44
<br /> New Pond Outlet Constructed
<br /> �+�' �+ � •�f s (See Exhibit C) Drain to be ��� j�
<br /> r'` ` ' ♦ 1�' i, i. A Created Wetland (planted b others) A
<br /> t.• _ .S removed by contractor P Y
<br /> t '�r�'.��/�' �► _ 1 a P 1 a t a River ` uot�a wb ��I•�ho aloe.
<br /> RT( Aq
<br /> NMI.(U 6`419.4') L•Iet'•1 MfIXO r_
<br /> •• •r • E 1019 IA— 9
<br /> y �► ,• I .+tt _< n
<br /> i�/ 1 • +� - i- II '1•,Il I� Ill.11l II.JII., III. it ..•,al--Wt.•lord ar•o(E..16.119.5)- I. _
<br /> r "+ - A. •, �IhI Emr9mt ret:and area(L t 6.419)•
<br /> `♦ ; ,, l �{. :','•. � �` • • .II``�IK+" -&CC ose.conted by-0.25'fa,:wsd Ol—t
<br /> Map Sources:
<br /> . � r..r�•^ 555 RiverGate Lane,Suite B4 82 Feet Designed by: DSS DRAFT
<br /> f Aerial PhotographyLa Plata County GIS,November 2007
<br /> for ` Durango,CO 81301 0 75 150 300 450 tY Checked b R U
<br /> g Parcel Data-La Plata County GIS,March 2010 y� J La Plata River Mitigation Site Exhibit B
<br /> (970)385-2340ph 385-2341fx Other Boundaries are approximate Date: 10/15/2010
<br /> wtvw.BikisWater.com 1 ll1Ch= ZJr� feet Topography-Skanska
<br /> . _ . scale: 1:1,800 Grading Plan
<br /> Map Coordinates are in NAD83,State Plane Colorado South(Feet)
<br /> /a -1 -20/6
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