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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 />N. W. COR. N. W. 1/4 -
<br />SEC. 16. T. 2S. , R. 67W.
<br />C
<br />W.1/4 CUR. SEC.
<br />T. 2S. , R. 67W.
<br />REVISIONS: CAD: AD03013/ AD03013A (AD02196.DWG)APPROXIM4ATE LIMITS OF
<br />01120103 REV. PER ADCO - 01131103 REV PER SPECIAL FLOOD HAZARD
<br />ADCO - 01/10/03 REV PER ADCO - 05/09/03 AREAS IMUNDATED BY
<br />100 YEAIR FLOOD
<br />REV PER ADCO - 05/13/03 REV PER ADCO AKA AS FFLOODPLAIN
<br />M
<br />EXCEPT FOR FENCING. NO
<br />NOTE: SEE EXHIBIT F - RECLAMAIION
<br />PLAN MAP FOR TYPICAL EXCAVATION
<br />& FINAL SLOPE CROSS- SECTIONS
<br />R.W. BAYER & ASSOCIATES, INIC. ADCO CONSULTIING, INC.
<br />2090 EAST 104TH AVENUE, SUITE 200 2090 EAST 104TH AVENUE, SUITE 305
<br />THORNTON, COLORADO 80233 -4316 THORNTON, COLORADO 80233 -4316
<br />(303) 452 -4433 FAX: (303) 452 -4515 (303) 450 -2204 FAX: (303) 452 -4515
<br />Fe I =
<br />1999
<br />034, AM =1
<br />NO MINING WITHIN 200'
<br />OF C. D. O. T. R. . W.
<br />�. E. CEIR. N. W. 1/4 1
<br />16,
<br />SEC. 16, T. 2S. , R. 67Y.
<br />L
<br />x'O
<br />Permit #: /7 l9YY 6? /{ Confidental ?:
<br />Class: Type -Seq.: ,1 /
<br />From: To:
<br />Doc. Name: VV
<br />Doc. Date (if no date stamp):_ S l /a- 03
<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 />6
<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 />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 />1
<br />41 150' 00 •0•
<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 Futton Irrigating Ditch Company. Prior to
<br />mining be Ing undertaken In any area, excavate on setbacks w II 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 jur i sdectI onal wetlands requiring the appropr l ate 404 perm t. Any
<br />tall grass areas adjacent to wetland areas that are d sturbed dur l ng mining shall be
<br />revegetated with Tall wheatgrass (Jose Var I ety) at a rate of 11.0 lbs. /acre,
<br />3. Site mining above the lake elevation level will use dry mining techniques using
<br />backhoes, bulldozers, and s miear equipment. Below the water level, drag lines, backhoes,
<br />and /or dredges shall be employed for mining,
<br />4. Topsoil and overburden stockpiles that are temporarily stored on site In the S.
<br />Platte River floodplaln area shall be in an alignment parallel to the overF.low direction
<br />of the S. Platte River, have a max l mum he I ght of 30', a maximum base width of 100', a
<br />maximum length of 300', maxilmum IHi IV slopes, and have a minimum of spacing of 100'
<br />between different stockpiles. A Floodplaln Use Permit from Adams County shall be obtained
<br />for all operations within the 100 year floodplaln. Topsoil and overburden stockpiles
<br />proposed for final reclamation activities shall be placed out of the 100 year floodplaln
<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 too 5.
<br />5. Existing fencing shalt 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 on 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 />6. 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 w111 Involve the striping and storage of topsoil and overburden, temporary
<br />excavation to a vertical condition (.51H, IV), that will Immediately be temporarily
<br />backfl tied to at least 1Hi IV, slopes if expected to remain for less than 1 year.
<br />Stockpiles expected to remain longer than 1 year shalt be sloped to at least 3", IV and
<br />temporary ly revegetated. Areas below the water level will be backFllied with sand spot is,
<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 shall be a maximum .steepness of
<br />3W 1V, and then a minimum of 6' of topsoil shall be placed on all reconstructed areas
<br />above the existing lake water level.
<br />8. 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 qualified vegetation managers and /or county weed control
<br />coordI nators will be on -go l ng to assist In the management of noxious weeds.
<br />9. In 'the even of any spit is from vent lc Les or other act Ivi t es on site, the SPCC Plan
<br />Included as part of EXHIBIT D - MINING PLAN shall also be Followed.
<br />10. No partial dewatering 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 />ROBERT N. FLEMING
<br />SCALE: DATE:
<br />1 " =300' DEC
<br />BOOK: I PAGE:
<br />DATE
<br />1DRW BY: I CKD BY:
<br />09, 2002 G.A.B. R.N.F.
<br />FILE N0: SHEET NO:
<br />16- 27 -73L 1 4
<br />PROJ N0:
<br />02196
<br />OF 6
<br />
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