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NOTES:
<br />THE BOUNDARIES SHOWN HEREON ARE APPROXIMATE.
<br />THE TOPOGRAPHY SHOWN HEREON REFLECTS 1998
<br />CONDITIONS PRIOR TO MINING BEING INITIATED,
<br />k
<br />N. W. CUR N. W. 1/4 -
<br />SEC. 16, T. 2S. , R. 67W.
<br />A
<br />IZ
<br />W. 1/4 COR. SEC. 16,
<br />T. 2S. , R. 67 W.
<br />REVISIONS: CAD: AD03013 /AD03013A(AD02196.DWG)APPROx I MATE: LIMITS OF
<br />01/20/03 REV. PER ADCO - 01/31/03 REV PER SPECIAL FLOIOD HAZARD
<br />ADCO - 01/10/03 REV PER ADCO - 05/09/03 AREAS INUNIDATED BY
<br />REV PER ADCO - 05113;103 REV PER ADCO AKA AS FLOGIDPLAIN
<br />M
<br />EXCEPT FOR FENCING, NO
<br />too 1 =
<br />- 1999 -
<br />NOTE: SEE EXHIBIT F — HECLAMAIION
<br />PLAN MAP FOR TYPICAL EXCAVATION
<br />& FINAL SLOPE CROSS— SECTIONS
<br />R. W.
<br />BAYER & ASSOCIATES, INC.
<br />ADCO
<br />CONSULTIING, INC.
<br />2090
<br />EAST 104TH AVENUE, SUITE 200
<br />2090 EAST
<br />104TH AVENUE, SUITE 305
<br />THORNTON,
<br />COLORADO 80233 --4316
<br />THORNTON, COLORADO 80233 -4316
<br />(303)
<br />452 -4433 FAX: (303) 452 -4515
<br />(303) 450 -2204
<br />FAX: (303) 452 -4515
<br />RONIMUS PRA
<br />034, AM =1
<br />NO MINING WITHIN 200'
<br />OF C. D. ❑. T. R. 1 W.
<br />E
<br />N COR. N. N. 1/4
<br />SEC, 16, T. 2S. , R. 1- 674.
<br />1,
<br />SCANNLU 1; N
<br />Permit #: _ / ' _ Confidental?: _
<br />Class:__ - _ _ Type -Seq.: _ _
<br />From: To: Ar
<br />Doc. Name: VV
<br />Doc. Date (if no date stamp):
<br />NO MINING WITHIN 200' OF SOUTH
<br />ADAMS WATER & SANITATION DIS-
<br />TRICT SEWER LINE WITHOUT DMG
<br />'APPROVAL OF AGREEMENT WITH
<br />THE DISTRICT.
<br />�1,v
<br />X NO MINING WITHIN 200'
<br />OF FENCE ON ADJACENT
<br />- PROPERTY WITHOUT
<br />DMG APPROVAL OF
<br />AGREEMENT WITH SAID
<br />X PROPERTY OWNER
<br />x
<br />e xmro,
<br />1 �,
<br />L
<br />MINING PLAN MAP
<br />THAT OF THE NORTHWEST ONE— QUARTER OF SECTION 16, TOWNSHIP 2 SOUTH,
<br />RANGE 67 WEST OFTHE SIXTH PRINCIPAL MERIDIAN, COUNTY OF ADAMS, STATE
<br />OF COLORADO. EXHIBIT C -2 SHEET: 2 OF 2
<br />E
<br />MEN
<br />S
<br />0 150' 300'
<br />SCALE: 1" =300'
<br />— Area of Existing Wetlands
<br />Boundary of Amendment No. 1 Area
<br />— Mining Limits
<br />• — Approximate Limits of Zone A & AE
<br />(100 Year Floodplain) See Pre — Mining
<br />Plan for Details
<br />MINING NOTES AND RESTRICTIONS
<br />I. Installation of the conveyor and pipe crossing over the Fulton Ditch shall require
<br />DMG approval of a written agreement with the Fulton Irrigating Ditch Company. Prior to
<br />m m Ing be Ing undertaken In any area, excavate on setbacks w 1. be staked In the field to
<br />ensure relevant setbacks are followed.
<br />2. The existing wetlands area as shown on this map shall not be disturbed until a
<br />wetlands Inventory Is accepted by the Corp of Engineers and a 404 permit Is Issued
<br />allowing removal of any jurisdictional wetlands requiring the appropriate 404 permit. Any
<br />tall grass areas adjacent to wetland areas that are disturbed during mining shall be
<br />revegetated with Tull wheatgrass (Jose Variety) at a rate of 11.0 lbs. /acre.
<br />3, Site mining above the lake elevation level w111 use dry mining techniques using
<br />backhoes, bulldozers, and similar equipment, Below the water level, drag lines, backhoes,
<br />and /or dredges shall be employed for mining.
<br />4. Topsoil and overburden stockpl les that are temporarily stored or site In the S.
<br />Platte River floodplaln area shall be In an allgnment parapet to the overflow direction
<br />of the S Platte Elver, have a maximum he l ght of 30', a max l mum base width of 100', a
<br />maximum length o£ 300', maximum 1H: IV slopes, and have a minimum of spacing of 100'
<br />between different stockpiles. A,1 R oodplaln Use Permit from Adams County shall be obtained
<br />for all operation- within the 100 year £loodplain. Topsoil. and overburden stockpiles
<br />proposed for firtai reclamation activities shall be placed out of the 100 year fioodplain
<br />in the northeast and southeast corners of the site. The grass seed mixture below shall
<br />be used for seeding of all topsoil and /or overburden stockpiles that are expected to be
<br />present for more than one year.
<br />SPECIES VARIETY PLS# PLS# /AC
<br />Crested Wheatgrass 'Ephraim; 5 100 5
<br />5. Existing fencing shall be maintained and new fencing Installed to preclude easy
<br />access to the site. All new fencing will be in accordance with County regulations,
<br />Including obtaining fence permits, where required. Temporary Fencing around the existing
<br />wetland area shall be Installed and maintained. Operations an site shall also Include
<br />the Installation of a conveyor and wash pipe crossing of the Fulton Ditch, and the
<br />installation of temporary conveyors and internal roadways as needed.
<br />G. Excavated material shall be transported off -site to the existing Plant Site by
<br />conveyor, except by approval of Adams County for borrow material which may be transported
<br />off -site by truck via the site's existing entrance onto Brighton Road,
<br />7. Mining will Involve the striping and storage of topsoil and overburden, temporary
<br />excavation to a vertical condition (.5H, IV), that will Immediately be temporarily
<br />backfllled to at least IH11V, slopes If expected to remain for less than 1 year.
<br />Stoc-kplles expected to remain longer than 1 year shall be sloped to at least 3H,IV and
<br />temporarily revegetated. Areas below the water level will be backfllled with sand spoils,
<br />excess overburden, and silt from process water from the processing plant that is located
<br />on another portion of the permit area All final slopes shalt be a maximum steepness of
<br />3H:1V, and then a minimum of 6' of topsoil Shall be placed on all reconstructed areas
<br />above the existing lake water level.
<br />B. Per the Noxious Weed Control Plan In EXHIBIT D - MINING PLAN, noxious weeds will be
<br />controlled, particularly Diffuse Knapweed, Scotch Thistle, and Canada Thistle, which have
<br />been observed within the permit area and on adjacent property. All areas adjacent to
<br />roadways and waterways will be assessed every spring to determine the best management
<br />practice for weed control, At a minimum, all noxious weed areas will be mowed as needed,
<br />In heavily invested areas, approved herbicides will be applied as needed to include, but
<br />not limited to, Tordon 22K applied at 1 pt /ac at 20 gpa or 2,4 -D 44 amine at I qt /ac at
<br />20 gpa. Consultation with quallfled vegetation managers and /or county weed control
<br />coordinators will be on -going to assist in the management of noxious weeds.
<br />9. In the even of any spills from vehicles or other activities on site, the SPCC Plan
<br />Included as part of EXHIBIT D - MINING PLAN shall also be followed.
<br />10. No partial ciewatering shall be undertaken without agreement with shallow well owners
<br />within 600', or approval of the State Engineer's Office
<br />11. No mining shall occur within 2' of the ground water table In any area not already
<br />exposed to the surface until the State Engineer's Office approves a substitute supply
<br />plan or another plan that allows such exposure of ground water.
<br />THIS MAP WAS PREPARED UNDER THE DIRECTION OF ROBERT N. FLEMING
<br />ROBFRT N. FLEMING
<br />DATE:
<br />I"=300' DEC
<br />1,00K: I PACE.
<br />DATE
<br />DRW BY: CKD BY
<br />09, 2002 G.A.B. R.N.F.
<br />FILE NO'. SHEET N0:
<br />16- 27 -73L 1 4
<br />PR02196
<br />OF 6�
<br />
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