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I <br /> 5655 5655 <br /> 5650 - 5650 <br /> 5645 5645 <br /> 5640 <br /> 5640 <br /> 5635 5635 <br /> 5630 5630 <br /> 5625 <br /> 5625 <br /> 5620 <br /> .,- 5620 <br /> 5615 5615 <br /> 5610 5610 <br /> 0+00 1 +00 2+00 3+00 4+00 5+00 <br /> Hor, Scale 1"=100' Current Topography <br /> Vert. Scale 1"=20' Completed pond topography <br /> B B i <br /> 5625 5625 <br /> 5620 5620 <br /> 5610 <br /> 01 <br /> 5615 5610 5610 <br /> 5615 <br /> A\ <br /> 0+00 1 +00 2+00 3+00 4 +0 <br /> 5615 <br /> CP <br /> i <br /> .►�S r„,,;4 ,. t 5616 5615 <br /> 5614 5613 <br /> G.� <br /> Scale 1" 10 <br /> �C7 <br /> CP Emergency Spillway Cross Section <br /> ..,,� Control Section <br /> Crest El. 5620.0 - H = 0.56' <br /> E 3 3 Control Section El. 5618.0 <br /> {{i <br /> 20' <br /> Emergency Spillway Hydraulics <br /> Control Section, 25 Year Event with Full Pond <br /> S t <br /> � Q = GLH3/2 <br /> �- Q =21.7 cfs <br /> C =2.63 <br /> L =20 ft <br /> H =0.56 ft <br /> Required control section freeboard is 0.3 feet. <br /> Available freeboard is 1.44 feet <br /> p.'sw4lBB Road <br /> f. <br /> ------------- <br /> �r3 <br /> 7� <br /> f <br /> W E <br /> (06 <br /> 50' 0' 50' 100' <br /> Legend <br /> View <br /> P <br /> 1 �� n a <br /> ond <br /> 1'" = 50" Area-Capaci / Table <br /> `J <br /> Topo:Postmining Topography outside of construction limits, Permit Boundary <br /> with constructed pond topograph within construction area Elevation Area Area Ave Area Incre. Cum Contour Interval 5 foot, with 1 foot contours within pond area. (feet) (ft sq) (acres) (acres) (ac-ft) (ac-ft) TR-70 Disturbed Boundary <br /> 5613.0 53410 1.23 0.00 Profile <br /> 1.26 1.26 Approved 5131�6 <br /> 5614.0 56081 1.29 1.26 Completed Pond Contour <br /> 1.32 1.32 <br /> 5615.0 58815 1.35 2.58 <br /> 1.38 1.38 <br /> 5616.0 61612 1.41 3.96 <br /> Construction Notes. 1.45 1.45 ENGINEERS CERTIFICATION - <br /> 5617.0 64472 1,48 5.41 1, Thomas C. Peterson, hereby certify that this Attachment 2.05.3(3) 29, Page 7 <br /> 1. Site Preparation: 1.52 1.52 map has been reviewed by me and is true Pond location: SE1/4 SW1/4 Section 36 T47N R16W <br /> This site has a very limited amount of fill placement, as the impoundment is largely subgrade. 5618.0 67394 1.55 6.93 and correct to the best of my knowledge and <br /> Prior to placing fill, the area will be stripped of any organic or other deleterious materials. information, relying on information supplied <br /> p 9 by experts employed by New Horizons Mine and Pond p 16 Plan View and <br /> that I am a Professional Engineer licensed in Colorado as <br /> 2. Acceptable Fill Materials: <br /> required by the provisions of C.R.S. 12-25-101 Design Details <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 will be through C.I .S. 12-25-119. IN WITNESS WHEREOF <br /> processed to produce a soil like material with maximum particle size of 6 inches. The materials used as embankment fill will have at least 25 percent fines (material finer than No, 200 sieve). The field engineer may approve the use of other materials following appropriate I have hereunder set my hand and affixed my seal. <br /> SCALE: Scale As Noted <br /> laboratory testing. <br /> ORIGINAL DATE, 11/28/2o15 <br /> DWG.BY: ES1/TCP <br /> 3. Unacceptable Fill Materials: <br /> •••• APPROVED BY: ran <br /> n break down t soil like material. Organic soils or ����►IIIIt11�j, ��""''�_ <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 of o g ���� o ij�� y�"""''►� <br /> materials containing construction debris are also not acceptable. Frozen soil/s not acceptable. ,'*''�' �P 000000�CF , orzo Ma 2 <br /> �` 4e••• Pl-** '�'�� New Nonian Mine DWG N0. <br /> 4. Fill Placement and Compaction: , • o ! PerBox 6 a C 198i-008 <br /> • � • � • �" - P.O Box 62 Nude,CO.81424 Attachment 2.05.3(3) 29 <br /> Embankment fill will be placed in thin horizontal lifts (8 to 12 inches loose thickness). The fill will 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 32257 <br /> placing and spreading of fill materials will be started at the lowest point of the embankment, Fill placement and compaction will be observed and tested by qualified engineering firm, r fr,I f ti No. REVISION DATE BY cHK <br /> � O"A .• mow` <br /> 5. Pond capacity is an estimate based on bedrock conditions. These conditions may result in final capacity of the pond to vary by 0.5 acre-feet from that shown in the capacity table. ,'�ijS's•0 N AL <br /> ■ •••� ����� 70 New design for Pond 016 1/11I16 TCP FKF <br /> ♦ � <br /> THOMAS C PETER ON <br /> P.E. No. 32257 <br /> FILENAME: Map 2 Pond 016 Map 2.05.3.dwg <br />