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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. CDR. N. W. 1/4 -
<br />SEC. 16, T. 2S. , R. 67W.
<br />C
<br />W.1 /4 CDR, SEC.
<br />T. 2S. , R. 67W.
<br />REVISIONS: CAD: AD03013 /AD 013A
<br />AD02196.DWG) 01/20/03 REV. P
<br />ADCO - 01/31/03 REV PER AD
<br />- 01/10/03 REV PER ADCO - TAY
<br />05/09/03 REV PER ADCO -
<br />05/13/03 REV PER ADCO - APPROXIIMATE LIMITS OF
<br />06/13/03 MISC REVISIONS PER ADCO - SPECIAL FLOOD HAZARD
<br />AREAS IINUNDATED BY
<br />100 YEAIR FLOOD
<br />AKA AS IFLOODPLAIN
<br />M
<br />EXCEPT FOR FENCING. NO
<br />own I -
<br />- 1999 -
<br />I
<br />NOTE: SEE EXHIBIT F — RECLAMATION
<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 2001
<br />2090 EAST
<br />104TH AVENUE, SUITE 305
<br />THORNTON, 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 />034, AM =1
<br />NO MINING WITHIN 200'
<br />OF C. D. O. T. R. Q. W.
<br />, R. N. E. CDR. N. W. 1/4
<br />SEC. 16, T. 2S. 67 V.
<br />E. 1/4 CDR. SEC. 16,
<br />T. 2S. , R. 67W,
<br />NO MINING WITHIN 200' OF SOUTH
<br />ADAMS MATER g SANITATION DIS-
<br />TRICT SEWER LINE WITHOUT DMG
<br />-APPROVAL OF AGREEMENT WITH
<br />THE DISTRICT.
<br />tl,Y
<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 />N
<br />E
<br />It 0 • 600'
<br />SCALE: 1 ":300'
<br />® — Area of Existing Wetlands
<br />Boundary of Amendment No. 1
<br />Affected Land 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 />11 Instal lotion 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 />mining being undertaken In any area, excavate on setbacks w It be staked In the field to
<br />ensure relevant setbacks are followed.
<br />2. The ex I sting wetlands area as shown on this map shall not be dl sturbed until a
<br />wettands 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 Tall wheatgrass (Jose Variety) at a rate of 11.0 lbs, /acre.
<br />31 Site mining above the lake elevation level will use dry mining techniques using
<br />backhoes, bulldozers, anal 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 temporary ly stored on site In the S.
<br />Platte River floodplaln area shall be In an alignment parallel to the overflow direction
<br />of the S. Platte River, have a max l mum he Ight of 20', a max l mum base width of 100', a
<br />maximum length of 300', max l mum 1Hi 1V slopes, and have a mini mum of space ng of 100'
<br />between different stockpl ley, A Flcoop l a In Use Perm It from Adams County shall be obtained
<br />for ate operations within time 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' 5 100 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 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 will Involve the striping and storage of topsoil and overburden, temporary
<br />excavation to a vertical condition (.5H. IV), that wilt Immediately be temporarily
<br />backfllled to at least IH1lV, slopes If expected to remain for less than I year.
<br />Stockpiles expected to remain longer than 1 year shall be sloped to at least 3Hi1V and
<br />temporarily revegetated, Arens below the water level will be backfllled with sand spolls,
<br />excess overburden, and slit from process water from the processing plant that Is located
<br />on another portion of the permit urea. Ali final slopes shall be a maximum steepness of
<br />3H. IV, and then a minimum of 6' of topsoil shall be placed on all reconstructed areas
<br />above the existing take water level.
<br />12. No de- watering or extraction activities will
<br />EA PIT
<br />8. Per the Noxious Weed Control Plan In EXHIBIT D - MINING PLAN, noxious weeds will be
<br />_.
<br />controlled, particuLarly Diffuse Knapweed, Scotch Thistle, and Canada Thistle, which have
<br />Permit
<br />Confidental ?:
<br />Class: v e�
<br />Type - Seq.:
<br />From
<br />c, To:
<br />Doc. Name:
<br />approved will be applied as needed to Include, but
<br />not IImited to, Tordon 22K applied at I /ac at 20 2,4
<br />Doc. Date (if no date stamp):
<br />- -0 '/•
<br />NO MINING WITHIN 200' OF SOUTH
<br />ADAMS MATER g SANITATION DIS-
<br />TRICT SEWER LINE WITHOUT DMG
<br />-APPROVAL OF AGREEMENT WITH
<br />THE DISTRICT.
<br />tl,Y
<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 />N
<br />E
<br />It 0 • 600'
<br />SCALE: 1 ":300'
<br />® — Area of Existing Wetlands
<br />Boundary of Amendment No. 1
<br />Affected Land 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 />11 Instal lotion 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 />mining being undertaken In any area, excavate on setbacks w It be staked In the field to
<br />ensure relevant setbacks are followed.
<br />2. The ex I sting wetlands area as shown on this map shall not be dl sturbed until a
<br />wettands 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 Tall wheatgrass (Jose Variety) at a rate of 11.0 lbs, /acre.
<br />31 Site mining above the lake elevation level will use dry mining techniques using
<br />backhoes, bulldozers, anal 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 temporary ly stored on site In the S.
<br />Platte River floodplaln area shall be In an alignment parallel to the overflow direction
<br />of the S. Platte River, have a max l mum he Ight of 20', a max l mum base width of 100', a
<br />maximum length of 300', max l mum 1Hi 1V slopes, and have a mini mum of space ng of 100'
<br />between different stockpl ley, A Flcoop l a In Use Perm It from Adams County shall be obtained
<br />for ate operations within time 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' 5 100 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 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 will Involve the striping and storage of topsoil and overburden, temporary
<br />excavation to a vertical condition (.5H. IV), that wilt Immediately be temporarily
<br />backfllled to at least IH1lV, slopes If expected to remain for less than I year.
<br />Stockpiles expected to remain longer than 1 year shall be sloped to at least 3Hi1V and
<br />temporarily revegetated, Arens below the water level will be backfllled with sand spolls,
<br />excess overburden, and slit from process water from the processing plant that Is located
<br />on another portion of the permit urea. Ali final slopes shall be a maximum steepness of
<br />3H. IV, and then a minimum of 6' of topsoil shall be placed on all reconstructed areas
<br />above the existing take water level.
<br />12. No de- watering or extraction activities will
<br />occur until Aggregate Industries develops a plan to
<br />8. Per the Noxious Weed Control Plan In EXHIBIT D - MINING PLAN, noxious weeds will be
<br />monitor the gravel pit pond water for
<br />controlled, particuLarly Diffuse Knapweed, Scotch Thistle, and Canada Thistle, which have
<br />dllsopropymethylphosphonnte (DIMP) and obtains
<br />been observed within the permit area and on adjacent property. All areas adjacent to
<br />approval of that plan from the Division of Minerals
<br />roadways and waterways will be assessed every spring to determine the best management
<br />and Geology. The plan will Include monthly sampling
<br />practice for weed control. At a minimum, all noxious weed areas will be mowed as needed.
<br />In heavily invested areas, herbicides
<br />and analysis to begin immediately after de- watering
<br />approved will be applied as needed to Include, but
<br />not IImited to, Tordon 22K applied at I /ac at 20 2,4
<br />and /or extraction activities are started. The monthly
<br />pt gpa or -D 4# am Ine at I qt /ac at
<br />20 gpa. Consultation w th qua L i f led vegetation managers and /or county weed control
<br />monitoring will continue for one year and then will
<br />coordinators will be on -going to assist In the management of noxious weeds.
<br />change to quarterly monitoring, until the Division
<br />Issues a letter authorizing discontinuance. The plan
<br />9. In the even of any spills from vehicles or other act ivitIes on site, the SPCC Plan
<br />will include the sampling and analytical methods to be
<br />included as part of EXHIBIT D - MINING PLAN shall also be followed.
<br />used and an agreement to submit the results of the
<br />10. No
<br />analysis to the Division within 30 days of the
<br />dewater Ing shall be undertaken without agreement with shallow well owners w thin
<br />sampling date. The samples will be obtained and
<br />600', or approval of the State Engineer's Office (SEO), and the written agreements or
<br />analyzed by a company, Individual or agency certified
<br />approval from SEO for dewatering to maximum depth of 15 feet Is reviewed and approved by
<br />the Division of Minerals and Geology,
<br />to do the work. If an analysis shows a level of DIMP
<br />exceeding Bug /L, Aggregate Industries or Its agent
<br />11. No mining shall occur within 2' of the ground water table In any area not already
<br />will notify the Division by certified mall and Include
<br />exposed to the surface until the State Engineer's Office (SEO) approves a substitute
<br />a response plan to deal with the contaminant, and to
<br />supply plan or another plan that allows such exposure of ground water,
<br />prevent on -site and off -site damage. If the Division
<br />determines from the monitoring data that there Is
<br />reasonable potential for the operation to cause ground THIS MAP WAS PREPARED UNDER THE DIRECTION OF ROBERT N. FLEMING
<br />water quality standards for DIMP to be exceeded, the
<br />D i v i s i o n w i l t notify Aggregate Industries to modify �L1UC/(l/�I /} /� (a ,/ tl
<br />the permit as necessary to comply with Subsection
<br />3. 1.7 of the Rules. ROBERT N. FLE t1 . DATE'
<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 />SCALE: DATE: DRW BY: CKD BY:
<br />1" =300' DEC. 09, 2002 G.A.B. R.N.F.
<br />BOOK: PAGE: FILE NO: SHEET NO:
<br />16- 27 -73L 1 4
<br />PROJ NO:
<br />02196
<br />OF 6
<br />
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