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2016-08-08_PERMIT FILE - C1981019 (79)
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2016-08-08_PERMIT FILE - C1981019 (79)
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Entry Properties
Last modified
12/4/2020 11:05:42 AM
Creation date
10/5/2016 10:50:40 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Permit File
Doc Date
8/8/2016
Doc Name
Middle Pond Design Drawing
Section_Exhibit Name
Volume 18 Exhibit 7-23 Figure C8
Media Type
M
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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PROFILE THROUGH EMBANKMENT CENTERLINE <br /> 7110 SCALE 1" =50' 7110 <br /> II <br /> 7080 _ <br /> 7080 <br /> Profile Impoundment <br /> Premine Topography --- - - - 7050 7050 <br /> 7020 <br /> 7020 <br /> 0 0 0 0 0 0 0 0 0 0 00 <br /> O co Co O N LID 00 <br /> r O O p O N N N co <br /> 7080 <br /> 7080 <br /> 7050 _ <br /> 7050 <br /> p 7020 <br /> 7020 <br /> i 6990 <br /> Riprap installed in 6990 <br /> spillway and grain o 0 0 0 0 0 0 0 0 o�0 to CIDo coN o <br /> 225 cu. ds. <br /> O O O O •- r t`- N coN N co C"? co ct Ck �t <br /> . tt1 � � CO <br /> PROFILE THROUGH IMPOUNDMENT <br /> _w _ <br /> SCALE 1" 501 <br /> �Oro <br /> 5 <br /> `. .., � <br /> .. EMBANKMENT DETAILS <br /> I Scale 1" = 20' <br /> DOWNSTREAM s.0 UPSTREAM <br /> EMBANKMENT CREST <br /> EMERGENCY SPILLWAY <br /> y WALKWAY W 42"HANDRAILS AS SPECIFIED <br /> EL.7066.0,(TOP OF RIPRAP) <br /> i k7 5 <br /> 1 PRINCIPAL SPILLWAY WITH NCRS ANTI-VORTEX TRASH RACK <br /> ~<. i L.7161 A,RISER IS 18"DJA.GALV STEEL GMP, 14 GAUGE MIN. <br /> TWO 3"DIA.PERFORATIONS,EL.7057.0 <br /> 3 3 0 NORMAL POOL <br /> ONE YEAR SEDIMENT ACCUMULATION,EL_7051.12 <br /> f 18"WATERMAN C-20 SLIDING GATE VALVE,EL.INVERT 7050.0 <br /> :..sV PDND BOTTOM <br /> EL.7048.0 <br /> EL.7033.0 <br /> ANTtSEEP COLLARS 6 FT(MIN) <br /> fi SIX REQUIRED ON 20 FT CENTERS <br /> 8 FT WIDE(MIN)KEYWAY 6 FT(MIN)iN DEPTH WITH 1 H:1 V SIDES <br /> RIPRAP PROTECTION AND <br /> g 12"PARSNALL FLUME AS SPECIFIED EXTENDING ACROSS ENTIRE ABUTMENT <br /> BY FIELD ENGINEER FABRIC WRAPPED FILTER,TRANSPORT AND PLACE: <br /> 145 CUBIC YARDS OF CLEAN,OPEN-GRADED GRAVEL(MINUS 2 INCH)APPROX.8 <br /> TO 9 INCHES THICK,57 FEET IN LENGTH&EXTENDING ACROSS THE ENTIRE FOOTPRINT 1811 p GALV STEEL CMP, 14 GAUGE MINIMUM,APPROX 185 FT EXCLUDING BARREL <br /> OF THE LOWER ONE OF DOWNSTREAM TOE AS DIRECTED. FILTER FABRIC 2-213"X 112"HELICALLY CORRUGATED,POLYMER COATED <br /> SHALL BE MIRAFI 140N NON-WOVEN OR EQUIVALENT,AND SHALL COMPLETELY AT 9.1%SLOPE <br /> SURROUND THE GRAVEL iN ALL DIMENSIONS. ALL FABRIC EDGES SHALL BE PROVIDED <br /> WITH 3 FEET OF OVERLAP WITH ADJACENT EDGE. <br /> , <br /> f <br /> Site Preparation: <br /> Prior to placing fill,the area should be stripped of organic topsoil or other deleterious materials. <br /> Acceptable Fill Materials: <br /> Suitable fill materials can be obtained from pond excavations or from nearby borrow sources. Suitable materials include native clay soils,clayey sand soils,and bedrock materials which are broken down to these soil types(SC,CC,CL and CH). Bedrock materials should be <br /> processed to produce a soil like material with maximum particle size of 6 inches. The materials used as embankment fill should have at least 25 percent fines(material finer than No.200 sieve). The field engineer may approve the use of other materials following appropriate <br /> laboratory testing. Unacceptable Fill Materials: <br /> Materials not considered suitable for use as embankment fill include cleaner sand and gravel. Also unacceptable are highly carbonaceous materials obtained from bedrock excavations or well-cemented sandstones which do not break down to soil like material. Highly organic soils or <br /> materials containing construction debris are also not acceptable. Frozen soil is not acceptable. <br /> Fill Placement and Compaction: <br /> Embankment fill should be placed in thin horizontal lifts(8 to 12 inches loose thickness). The fill should be moisture conditioned to within 2 percent of optimum moisture content and compacted to at least 95 percent of standard proctor maximum dry density(ASTM D 698). The <br /> placing and spreading of fill materials should be started at the lowest point of the embankment.Fill placement and compaction should be observed and tested by qualified geotechnical engineering firm. <br /> j Monitoring and Inspections: <br /> Monitoring and inspections should be performed by qualified individuals as outlined in Colorado DRMS regulations. <br /> I <br /> Construction Notes: <br /> 1. See Map 41 B for general location and associated drainage areas. <br /> 2. Embankment to be constructed of compacted fill using materials specifed by field engineer. Refer to <br /> to Exhibit 7, Item 20, Part F for Geotechnical Information and compaction specifications. Figure 3 of <br /> that document contains requirements for site preparation, fill materials,placement requirements, and <br /> monitoring. <br /> 3. Hatched area of the spillway and outlet section along groin shall be riprapped with 12 inch median <br /> size material. , <br /> 4. Upon obtaining acceptable laboratory results on borrow material samples, the fabric wrapped drain shown <br /> above may be modified or deleted at the discretion of the design engineer. <br /> tio <br /> ll <br /> AREA-CAPACITY TABLE <br /> (Revised fallowing as-built survey) <br /> CAPACITY <br /> ELEVATION AREA AVERAGE AREA INCREMENTAL CUMULATIVE <br /> (Feet) (Acres) (Acres) <br /> (Acre-Feet) (Acre-Feet) PR-4 <br /> ENGINEERS CERTIFICATION Approved on 818/16 <br /> �f <br /> 7048.0 0.02 0.00 I, THOMAS C. PETERSON, being a <br /> 0.03 0.06 Licensed Professional Engineer in AUG 0 `20 <br /> 7050.0 0.04 0.06 the State of Colorado, do hereby 15 <br /> Di <br /> 0.06 0, certify that this map has been visie�ri®f t , <br /> 7052.0 0.07 0.17 reviewed by me and is true and Mi�'i'�9 Safety <br /> 0.08 0.17 correct to the best of my knowledge etY <br /> 7054.0 0.10 0.34 and information relying on work <br /> 0.12 0.24 performed by others,and based on <br /> 7056.0 0.14 0.58 information supplied by experts <br /> 0.16 0.32 ►dentified in section 2.03.3 of the MIDDLE POND <br /> 7058.Q 0.18 0.9� Colo Coat Company L.P. Permit. <br /> DESIGN DRAWING <br /> 0.21 0.42 <br /> 7060.0 0..24 1.33 <br /> SCALE: As Noted <br /> 7062.0 0.31 1.88 `��� P • C'F DATE: 111912015 <br /> 0.36 0.71 i` •s�. Pe;";�� `� �' U' DRWG.BY: TCP <br /> 7064.0 0.40 2.59 • • F' • COAL L/ APPROVED BY.00 <br /> .� o . F . f <br /> 0.45 0.9Q _ U :�- 32257 Z: © - tiR�E COMPANY DRWG NO. <br /> 7os6.0 0.50 4 <br /> � • • � f'LE-PRODCCTI.--- <br /> = 7/3 r/rS; _ EX . 7-23 <br /> j00- 0� •• i / Colawyo Mine �1/'V� <br /> �� ••••••••••• �� 5731 State Highway 13 �� ,i�� i _TS <br /> Meeker,Colorado 81641 a.� V <br /> ION 1# <br /> No. REVISION DATE BY CHK <br /> THOMAS C PETERSON <br /> w E TOTAL CAPACITY 3.49 ACRE-FEET(DESIGN) P.E. No. 32257 PR-04 New Drawing 1120115 TCP KRB <br /> - ` s Corrected ore ard�n borrow <br /> Middle ond <br /> Modified interior darn slope face to 3H:1V,added Riser 7131115 TCP KRB <br /> Iddle Pond S <br /> Scale 1" = 50' DATE <br /> Page Exh. 7-23C-13 <br />
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