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HomeMy WebLinkAboutDrainage Reports - 07/13/1995PARK ENGINEERING P_ CONSULTANTS Fin krr llrQ(di ROW' a: Z ,3 FINAL DRAINAGE REPORT AND EROSION CONTROL PLAN ADVANCED ENERGY LOT 11A, OF THE REPLAT OF LOTS 3, 4, 11 AND 12 OF PROSPECT PARK EAST P.U.D. FORT COLLINS, COLORADO 1240 Main Street Longmont, CO 80501 (303) 651-6626 FINAL DRAINAGE REPORT AND EROSION CONTROL PLAN ADVANCED ENERGY LOT 11A, OF THE REPLAT OF LOTS 31 4, 11 AND 12 OF PROSPECT PARK EAST P.U.D. FORT COLLINS, COLORADO Prepared for: THE NEENAN COMPANY 2290 E. PROSPECT FORT COLLINS, COLORADO 80522 (303)493-8747 Prepared by: PARK ENGINEERING CONSULTANTS 1240 MAIN STREET LONGMONT, COLORADO 80501 (303)651-6626 March 25, 1995 Revised 5/10/95 Revised 6/16/95 PEC Job #107-34.001 TABLE OF CONTENTS Certification I. General Location and Description II. Historic Drainage III. Drainage Design Criteria IV. Drainage Facility Design V. Conclusion Appendix A (Drainage Calculations) Appendix B (Erosion Control). Map Pocket "I hereby certify that this report (plan) for the drainage design of Advanced Energy was prepared by me (or under my direct supervision) in accordance with the provisions of the City of Fort Collins Storm Drainage Design Criteria and Construction Standards for the owners thereof." Registered Professional Engineer State of Colorado No.16726 (Seal) I. GENERAL LOCATION AND DESCRIPTION The Advanced Energy site is described as Lot 11A, of the Replat of Lots 3, 4, 11 and 12 of Prospect Park East P.U.D., City of Fort Collins, County of Larimer, State of Colorado. The site is bounded by the developed Lots '3 and 4 on the north, Tract A (a drainage pond) on the east, Midpoint Drive on the south and Prospect Parkway on the west. A map showing the site can be found in the map pocket at the end of this report. TOPOGRAPHY The site, Lot 11A (4.502 Acres), is unimproved except for overlot grading that was done previously. The site is void of trees and has a ground cover of a variety of grasses and weeds. The site slopes northeasterly on an approximate slope of 3%. There are existing improvements that surround the site. There are water and sewer lines on the south, east and west. Other utilities such as telephone, gas and electric are in the area. A concrete drainage channel runs west to east along the north property line and intercepts the runoff from this site and releases it to the pond adjacent to the site on the east. See enclosed map for existing contours and topographical features. II. HISTORIC DRAINAGE SITE BASIN DESCRIPTION As described in the previous section, the existing drainage conditions have been created by previous improvements and development: The site totally drains north and east to the concrete channel and pond in Tract A. This site has been included in the previous master planning of this subdivision and will function accordingly. There is no detentioning in this subdivision due to the proximity of the Cache La Poudre River flood plain. Drainage improvements exist that channel the runoff through the subdivision to the river. This site lies within the Cache La Poudre Basin. The master drainage plan was prepared by James H. Stewart & Associates and approved by the City in 1984. The concept was to provide a channel through the middle of the site that collected the storm runoff and discharged it into a pond at the east side of .the Prospect Park East P.U.D. As the pond filled, the overflow was discharged through three 24" culverts under Sharp Point Drive and directed to existing ponds east of the site which are in the Poudre floodplain. III. DRAINAGE DESIGN CRITERIA The City of Fort Collins "Storm Drainage Criteria Manual" was used as a standard. This report was developed using the above referenced manual. The hydrological criteria used for this report was based on the "Intensity - Duration - Frequency" curves for the City of Fort Collins Using the rational formula method for runoff calculations, flow rates for each sub -basin was determined for the 10 and 100 year occurring storm. Hydrologic calculations are included in Appendix A along with the related tables and figures. Detailed hydraulic calculations are provided in Appendix A for the drainage improvements. Previous drainage reports were also refer- enced in developing this report which included the "Storm Drainage Report for One Prospect P.U.D." IV. DRAINAGE FACILITY DESIGN The drainage concepts for the developed conditions will be discussed in the following paragraphs. The developed conditions are shown on the "Drainage Plan" located in the map pocket at the end of this report. The Advanced Energy site will be developed in a manner consistent with storm water management practices. The development is typical with buildings, parking, landscaping and is a use -by -right for the IL zoning. The runoff will be directed through inlets and piping, curbs and gutters to the existing drainage improvements of the concrete channel and pond. The site is broken into four (4) sub -basins by the development. Basin 1 is the approximate north 1/3 of the site. This basin is graded to discharge directly to the existing concrete swale that runs west to east along the north property line. Basin 2 represents most of the west building and the parking lot along the west and south sides of this building. This basin discharges the runoff to a .sump curb inlet that connects to a storm pipe that discharges to the pond in Tract A. Basin 3 represents the service area between the two buildings and collects runoff from the service. yard, a small portion of the roof and a small court yard. There are two area inlets that collect the runoff and discharge it into the storm piping system that discharges into the pond. Basin 4 represents the southeast corner of the site which includes a part of the building and the parking lot south and east of the building. The runoff from this basin is directed to a sump curb inlet that discharges into the storm piping that releases to the pond. Developed runoff rates for the basins were calculated as follows: Basin 1: Q10 = 6.52 cfs; Q100 = 12.55 cfs. Basin 2: Q10 = 4.08 cfs; Q100 = 7.88 cfs. Basin 3: Q10 = 2.84 cfs; Q100 = 5.62 cfs. Basin 4: Q10 = 4.92 cfs; Q100 = 9.65 cfs. The storm sewer piping and inlets were sized to convey the 100 year event. The concrete channel along the north property line will carry the developed flows of the subdivision during the major event. Based on the City's analysis of Spring Creek Flood Improvements, 75 cfs of overtopping needs to be carried along the concrete channel. It is assumed that the subdivision's peak runoff will already be gone when the overtopping occurs. Therefore, the channel will be free to handle the overtopping of Spring Creek. Two typical sections of the channel along the north property line were analyzed and included in Appendix A. In the steep portion of the channel, the flows are contained within the channel. In the flatter portion of the channel (east end) the flows slightly exceed the top of curb but create no conflict due to the parking in this area. Off -site Basin - There is no off -site runoff directed to this site except that which is carried in the concrete channel along the north property line. Detention Pond, Release Structure and Other Improvements. - No other improvements are required for this site since this area is allowed to free release to the Poudre River. V. CONCLUSIONS The drainage concepts for this project are consistent with current policies and practices for storm drainage management. The site will maintain the flow patterns and be consistent with the development practices in the area based on the master planning. APPENDIX A No Text PARK ENGINEERING CONSULTANTS JOB 10-4-34 ✓� �y�`"e`1 �"i2"9`� 1240 Main Street SHEET NO. / OF LONGMONT, COLORADO 80501 CALCULATED BY IV�iCil� DATE S'ZS 9 S (303) 651-6626 CHECKED BY DATE PROW 20I-1(Uo ShmJAil IPaWl®®oc_GM M=01/11. To 0NoFWTOLLFREE1-WOV.SM PARK ENGINEERING CONSULTANTS 1240 Main Street LONGMONT, COLORADO 80501 (303) 651-6626 JOB &/o�-3� 1{)06..cA.0 JE"9lo I SHEET NO. OF CALCULATED BY 4LJ�� DATE 3 —2j CHECKED BY DATE PRWUCT 21N 1ISvgM Elkel5lfiS-1IPaEAMI®®No..Gmmn. Nsss. 01471. To O*rPHXWLL FREE I{il4MY W 72DPoS£.b SEWER PIPES Enter up to 10 pipes. Enter <Return> only for flowrate and diameter to end. FLOWRATE DIAMETER FRICTION SLOPE VELOCITY (CFS) (IN) (FT A1/6) M (FPS) ------- ----------- . 60 -------- 6.00 ------------ 0.0110 ----- 0.82 ------- 3.06 �o'YsA2D ~ 7.88 18.00 0.0110 0.40 4.46 ,6#51eJ Z 5.62 18.00 0.0110 0.20 3.18 &4sSjW 3 13.50 24.00 0.0110 0.25 y 4.30 z f- A4S,-J 23.15 24.00 0.0110 0.75 7. 378.g5i) Z t AfS„�1 3-/- 05-10-1995 ADVANCED ENERGY (NEENAN) Page 1 CIVIL DESIGN GROUP BOULDER, COLORADO *** STORM SYSTEM Analysis of Existing Pipes Invert Slope Depth Cover --Vel-- --CFS-- % Solutions Link Length Dia Up/Dn Ft/Ft Up/Dn Up/Dn Act/Ful Act/Ful Load Remov Dia 1 222 18 94.37 0.0075 3.13 1.5 6.7 7.88 73 92.70 6.30 4.7 6.1 10.79 2 130 24 92.70 0.0025 6.30 4.1 4.3 13.50 101 0.2 27 92.38 6.62 4.5 4.2 13.31 3 101 24 92.38 0.0026 6.62 4.5 5.0 13.50 99 92.12 3.38 1.2 4.3 13.61 4 54 24 92.12 0.0074 3.38 1.2 7.4 23.15 100 0.1 27 91.72 2.28 0.1 7.3 23.07 ----------------------------------------------------- Lateral Length= 507 Upstream Length= 507 7 NATURAL CHANNELS VARIABLES LIST: Y - FLOW ELEVATION Q - FLOWRATE S - CHANNEL SLOPE VARIABLE TO BE SOLVED (Y,Q OR S) ? Y Enter up to 20 cross-section points. Enter <Return> only for distance to end. Q (CFS) ? 75 S (FT/FT) ? .005 CROSS-SECTION POINTS DIST ELEV COEFF DIST ELEV COEFF 0 98.1 .032 15 98 .032 RESULTS 65 97 .032 74 96.5 .013 Y= 96.61 FT 74 96 .013 A= 10.66 SF 80 95.5 .013 P= 20.44 FT 86 96 .013 V= 7.04 FPS 86 96.5 .013 F= 1.67 SUPER -CRITICAL FLOW 112 97 .013 142 98 .013 <Shift> ------------------------------------------------------------------------------- <Prt Sc> print <Return> repeat <Space Bar> back to menu NATURAL CHANNELS VARIABLES LIST: Y - FLOW ELEVATION Q - FLOWRATE S - CHANNEL SLOPE VARIABLE TO BE SOLVED (Y,Q OR S) Z Y Q (CFS) ? 75 S (FT/FT) ? .02 Enter up to 20 cross-section points. Enter <Return> only for distance to end. CROSS-SECTION POINTS DIST ELEV COEFF DIST ELEV COEFF 0 99.15 .032 24 99 .032 RESULTS 63 98 .032 74 97.5 .013 Y= 97.32 FT 74 97 .013 A= 6.79 SF 80 96.5 .013 P= 12.67 FT 86 97. .013 V= 11.04 FPS 86 97.5 .013 F= 2.59 SUPER -CRITICAL FLOW 234 97.50 98 ..013 013 <Shift>'<Prt Sc> print <Return> repeat <Space Bar> back to menu 0 1.0 .9 .8 7 .6 .5 H w u- .4 z L z z .3 w a 0 .2 .15 12 II 10 8 10 6 nJ tL 9 0 4 U. � o: 3 8 w i z vi 2 7 - iw T ' z c� z 6 _ Example, Part a_ I'O z 5.5 0 - -- _ a. N 6 0 w 0 w 5 = z o 0 z .4 Z w x 4.5 z ao .3 w w = 4 L 0 .2 0 v x Z :i o 3.5 w w T a J 0 I w u. U. .08 F' o F- 3 = ~o .06 c� U z w x .04 0: 2.5 = w w a .03 a H .02 a 0 a = 2 a a w 01 0 L U. 0 o_ 1.5 Yo �- 5 4 3 2 1.5 1.0 .9 .8 .7 .6 v n .3 .25 .2 15 MLs] Figure 5-2 NOMOGRPAH FOR CAPACITY OF CURB OPENING INLETS IN SUMPS, DEPRESSION DEPTH 2" Adapted from Bureau of Public Roads Nomograph MAY 1984 5-10 DESIGN CRITERIA APPENDIX B RAINFALL PERFORMANCE STANDARD EVALUATION --------------------------------------------------------------------- IROJECT: /ebv4.ACF-b> 0462GY STANDARD FORM A ;OMPLETED BY: 3, Le ,i.JCEa2,a�, d,,s.,Lr w�3 DATE: s io 1 S ------- ----------------------------------------- ------------------- -- )EVELOPEDIERODIBILITY1 Asb. I Lsb I Ssb I Lb I Sb I PS 3UBBASIN ZONE I (ac) I (ft) I l(feet) I (.) I (o) --------- -----------I ----- ---------1-------I----- ---------I--- ---- �2f i 4, 5 5oo ----------------- -------- ----------------------------- --------------- )I/SF-A:1989 . 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"N M en M M M M M M M M M M C�) M M M M M rM M M M CM l CO CO OG co co W co coOC g q q q q q q CO CO CO CO co CO CO CO CO COl I ti .r LO r� q CD 0 I N N M M M C C C' C C LO LO to tD to tD l%l 1., I 1 r--I N N N N M M M M M M M M M M M M M M M M M M M M M 1 co co cc coCO co ccq 0000 co q q co co CO CO CO cc CO CO CO CO COCO CO M NtOq CM M M C C C C C C Ul U) U) V) t0 tD t0 t0 I G .•4 N rI N N N N N N N N N N N N N N N N N N N N N I co CC CO OO CO CO co CV CO g q q q q q q q q q q co co g q q q I I U) Ln O)NM C U) t0 n n f\ CO q q Q1 a% C% a% ON ON O O O O (= O 1 OICON NNNNN 1 n g q q q q q q q q q q q q q q q q q q q q q q q q 1 CU) O M U7 t0 qq Q)OO Cl 14N N"NMMMMMM . . . . . . . . . . . . . . . . . . . . . . . . . . q C) O O O O O O O .--1 r-1 .--1 .--1 r-1 r-1 ti r1 r-1 e-1 e-1 r+ 1: 1: r-I •'+ r4 r\ I� OJ CO CO q 00 00 g q q q q q q q q q q q q q q q q q q N q rr c to r\ n q Ol all O 4 N N N M M M M M tD q q (31010; CT O) Ol O) CT O 00 O O O O 00 00 00 O O n f\ r\ r\ 1\ rl t\ n r` n r\ g q q q q q q q q q q q q q q t0 M O C n O) O .-1 N M M C C LO to to U) tD t0 t0 t0 n r\ tD tD tD C tD n f\ r\ n q CO g q q q qq g q q q q q q q qq q q r\nr\r\r-It\r�lrftlrl r-I r\ r\ r-- n n n n n n r\ r� r� r� r\ r� r` m 0Ct0 r-,ggr-, r� r� tD to tD tt) C C M M N N O) tD C.-4m%D O N NN NN NNNN NN N N N NN NN N 1:.414 11 OO nn f\1-1r\ n 1%,n nr\ r\r\ t\n r\n ^nf\^ nr\ r\r\ I S 1 1 3 CD ^ r I CD CD O CD CD O C O 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 C) 1 0H 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I J= I.L 1 MCIn tD rZq O)Oe-IN M-Cr U'f tD r�g01O In O to O Ln CD 1 6L W .... 1 M M d• C' ll•) 1 J I TABLE 5.1 a EFFECTIVENESS CALCULATIONS --------------------------------------------------------------------- PROJECT: Ae,?,,cc Lic> Y STANDARD FORM B COMPLETED BY: DATE: S io 9 S Erosion Control C-Factor Method Value ---------------- ------- 1,�.� ----- o. o i �j�2,(...tc 'bgStGBY✓15L. O.OIo Sir Fc.rCL /. o ---------------------------------- v1AJOR j PS SUB AREA P-Factor Value Comment ------------- /. D --------------- 7Z etc s o /, 5 ,qE ccs o. 5 O.$ ---------------------------I BASIN (%) IBASIN (Ac) CALCULATIONS ----- ------ ----- ! ------------- ----- -,-- -t--�¢7-------- I B/ 945 sl.st-isj.-. c . a : 0.41 ------------- ------ IDI/SF-B:1989 CONSTRUCTION SEQUENCE PROJECT- Al2Vi4MC-1fV % N1-:W'6 Y SEQUEN, CE. FOR 19 ONLY COMPLETED BY: P/�6 STANDARD FORM C DATE: -SS Indicate by use of a bar line or symbols when erosion control measures will be installed. Major modifications to an approved schedule may require submitting a new schedule for approval by the City Engineer. YEAR MONTH _ OVERLOT GRADING WIND EROSION CONTROL Soil Roughing Perimeter Barrier Additional Barriers Vegetative Methods Soil Seal nt Other 52,s.kd��yz RAINFALL EROSION CONTROL STRUCTURAL: Sediment Trap/Basin Inlet Filters Straw Barriers Silt Fence Barriers Sand Bags Bare Soil Preparation Contour Furrows Terracing Asphalt/Concrete Paving Other /,54i,, VEGETATIVE: Permanent Seed Planting Mulching/Sealant Temporary Seed Planting Sod Installation Nettings/Mats/Blankets Other °lam STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 STRUCTURES: INSTALLED BY MAINTAINED BY VEGETATION/MULCHING CONTRACTOR DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON HDI/SF-C:1989 PARK ENGINEERING CONSULTANTS 1240 Main Street LONGMONT, COLORADO 80501 (303) 651-6626 -Zlo 7- AVIO-wclt> I�OJW-v 51 JOB SHEET NO. OF CALCULATED BY DATE 410/9 -!g CHECKED BY DATr"q" SCALE n -s lm-1 ISO* am$ � I (Pam) To ordupemmu FREE i-mo-2256= WxsTnucnm swacE PROJECT: AOdAMaeP 2=Nc,CGY STANDARD FORK C - I SEWEIC_ FOR 19_ONLY CONPLETEO BY: (Af& (=nV.ru✓il U•6 a CATE: S-/-9J M CURB 4' - i to by use of a Oar Ilse or when Con Oral measures N111 ins talletl EXISTIC1PjBHG 3 WRB QPENING EXISTING 3' - I y requn Major It Cit t4 an scM1etlule may requt re suOnl [[In9 a approved aches ei new s<neoule ter OPENING ' EXISTING 3 CURB WENING „,..-1 EXISTING 3'-1 I apprr al by thedo eer. approval OY the CITY Engineer. YEA -dd �J SPILL - CURB OPENING s : KENNN Os ': CATCH P4 E Y.,� - / .. OVERLOT GRADING •� i6' - - Tx %" 1 ' BASIN 7 - T I. I -_ATCH An 0 ` __ VINO EROSION CONTROL PAN 2 CURB I - - r Soil Roughing 'Q 1 OPENING p a% A=1 743 AC CURB 2 CURB - �"- r' Perimeter Borler CgiCH PAN / Q10D�6.52 CFS AND CUTTER OPENIN 'C! a Ve etativeional Barriers I¢' Y ! -� D=12.5 CFS y TYPICAL - WP i6Ps i oi�ers�.l�di.�t�hod OPENI : ,o l : SPILL _PAN rA r RAINFALL STRUCTURAL: EROSION CONTROL •n : - // IIRUCTUML --fin / Sediment Trap/Basin 4Rao -._ -- - I Inlet Filters s F .1 StrawBarriers n9 M9 - wDI i _ .: 4 _ _ ��Silt ie •Barriers.. - W CURB. i-- - _..y i-s <...' - uol ^'.. --- i Sa l Bags se�� q //, (, ? AND CUTTER' A I r I r I r I r i uFtoKE did I_2' CURB ° ;y 1 Bare Soil Preparation 'N TYPICAL,' 1 I PA --. OPENING /' Contour touillgurrows r Terr O '� ---20' UTILITY EASEMENT --- ` I Asphalt Concrete Paying Cif 1! I I :I I VEGETATIVE: •_ t I"\s n [a> I Permanent Seel Planting 2211 6 24 16 6 :64' sW' 6'I 6 dddddd_p 6 2' CURB Mulching/Sealant / - I I R OPENING Temporargal Installation Seed "id �' 9P Other BUILDING 4CURB ' Kett ings/M+ls/Blones ts %BUILDING 3 A. MID GUTTER I b`e ............. _.... 9� ONE STORY ONE STORY �6 TYPICAL -"-""-"""" 22,427 S.F. r I .am • r • r_ r I r I 32,627 S.F. pw' I STRUCTURES: INSTALLED BY MAINTAINED BY d r 4 m FF = 900 = I aE k�� 2 CURB a .� ' \� _ FF = 900 /. VEGETATION/MULCNIN CONTRACTOR OPENING JIA DRAINAGEEASEMENT // n ♦ BASIN 3 / r. ] I '.I DATE SUBMITTED APPROVED BY CITY OF FORT C%LINS ON I! < A=0.592 AC "` ' rg IPfN THE PUT OF PR P[CF PARK EAST, P V.D.1 BASIN 2 NDI/TF.C:1989 ._ A=Q.961 AC QI OO 4 CFS 1 r ' -w �. , § • ._. ,.. . a •,� °• Q100wma 6 CFS _ 0100D 5.62 CFS1y�y IS TIY s v F Qi00D=7,88 CFS sEe.+cF AREA T I < saw : CP aided e. ' CONCENiRAON POINT [! OIOO- 162 CFS 0100w,232 TYPICAL) _. NOTE: V a. PROPOSED 8VA 1. SEDIMENT CONTROL FEATURES ARE NOT TO BE REMOVED UNTIL 1 AREA INLET ' y.:.., a �1 V \. r ` I F .,.�It NDSWO G PIAN AN REWIRED HABEENESTABLISHED, SEE .GRA,C 95:4R 9S*S'� - .. y% w PAN WI D LANDSCAPING A INV. 92.90 y a _ y1 \ INv 91 I2 MIX• .. . �b P _. a'f PROPOSED DN MAY AA 1V. w iT� II Iddi 8.92 LP OF 18' CLASS-111 • / \ vN 2. ALL EROSION AND SEDIMENT CWTROL FEATURES SHALL BE Ib �C fF RCP STA AT 0.20X OF ` CONSTRUCTED AND MAINTNNED IN ACCORDANCEWITH CITY - z q 100=9 85 CFSyI' S4 Lid a FORT cRLINS STANDARDS. BASIN 4Pvc sink(•, o.PSx A=1.206 DIi"d! - W/ F.E.B. ' \ 3. CITY SHALL NOT BE RESPONSIBLE FOR MAINTENANCE OF ONSITE Y B Q1OD=4.92 CFS(DRAINAGEFACILITIES THE STORM DRAINS SHOWN ON / STORM AMS. L E W E ' -, A IPRWOSED I THESE PLANS. b vm� �wa ' 0100D=9.6 CF E.•FUGr B - d ,8 /� /FGREM: 9 4. ALL CWSERUCTIW ACTIVITY NUS} STORRA WITH ME STATE OF ♦ m R ✓ �. ASSOCIATED PERMITTING CONSTRUCTION FM 'STWMWATER DISCHARGES ���.�p,r i . FL CRAZE: 85.5�1•'• I Mq ?�" e>n B I -�T- q B V ASSOCIATED AWTHCT COLORADOTDE ACTIVITIES". , W INFORMATION. 'N?di B 1� - :INV 92.W } NAw WENT : 1 PLEASE CONTACT CVIOCO- 0 DEPT. W HEALTH, WATER OUALITY ENFORCEMENT r .r r \ ``/ r 4i PROPOSED CONTROL PHONON, 03) 692E-82, ATM: PERMITS h ENFORCEMENT CURBINLET'.. ♦ r tP 6 X 6' ARM .' 4Y SE SEGIIW, PHONE (.HIS) 692-0590. r��` STOOP 1V0.]5A W tar \ 4' WENING `� s'0° sERMW PVC ST/L AT 0.251C it CRAVE: 97.50 \ .I'P • 5. IF CONSTRUCTION IS USED TO INSTALLWASTEWATER UTILITIES, THEN A STATE PROPOSED SHALL BE REWIRED IF CIS WASIEWA,ER DISCHARGE PERMIT INV 94.3] PROPOSED \ STORM MH SHALL L, REWIRED C TCH,ORLAN INTO A STORM SEWER Pw S W OF .7 E '�� % PROPOSED C?} RIM 9938 a . \ CHANNEL, IRRIGAPpI DITCH, OR ANY WRITERS OF THE UNITED PVC ST/L AT OJ5x \ \ P.� RIM 9 III00 As 129.81 Up INV 9238 F STATES I ¢\ RIM 92..70 . • o d - 129.81 A OF 2 e \• \\ PVC Si/L AT 0 5% u INV 92.]0 x4 6. ALL NCE VA Arv0 SEDIMENT CONTORT SHAG EL INSTALLED IN START DAM. MlH THE DRAINAGE REPORT W A RELATIVE BANS FROM .... \ \ •. AD( p START DAIS. i : q % ]. LANDSCAPE MATERIALS SHALL BE m ACCORDANCE MTI THE �7 CURB LANDSCAPE PLAN FOR THIS DEVELOPMENT. INSTALL ,A 2' NOEWALK CFS OPENING I-8' X 8' TAPPING SADDLE s ^Y 1-8' TAPPING VALVE O ' Pid, CHASE SI LEGEND CWSTRUCTW MALEFIC I -TALUS Bo%_ __- JCLESSJpNT..-eRRVIDE �- ,_Tnt! lss� 1�'�:_. -• of%ISTNG'SANITARYSEWDRAINAGE SUMMARY TABLE ER LTHRUST BL�CR�' OPENING IN SILT FENCE - EiL \ \� a.1 b t 4 •.. ® EXISTING SANITARY MANHOLE AAar sEc¢ss'eMIP� �� nq• �' - PRWOSEO SANITARY SEWER SERVICE (K)mPICM -" I � �'-r BASIN 1 BASIN 2 BASIN 3 BASIN 4 TOTALS EXISTING WATER LINE \ EXISTING FIRE HYDRANT ,� QIDD 6.52 CFS 4.W CFS 2.84 CFS 4.92 CFS 18.36 CFS EXISTING WATER VALVE I \\ 9Lv PROPOSED WATER LINE I \ �, TI - �L R� 2' CURB Q1 DOD 12.5 CFS 7.88 CFS 5.62 CFS 9.55 CFS 35.65 CFS OPENING �.' PROPOSED FIRE HYDRANT •. PROPOSED WATER VALVE - N REVISED: 5 10 95' 6 i6 95 • PROPOSED WATER MEWR \ \`� AR - PARK ENGINEERING -� PROPOSED STORM SEWER ` SILT FENCE PROPOSED AREA INLET \ CONSULTANTS 240 MAIN STREET • PROPOSED STORM SEWER MANHOLE \ ER LONCMONT CO. 80501 (303)651-662 PROPOSED CURB INLET PROPOSED TRANSFORMER \ - ADVANCED ENERGY ® 30 0 15 3O 60 - `` DRAINAGE @ EROSION CONTROL PLAN \ WHGINAL GALE: 1'-JO' \ L9 No ban cap No SHIFT NC 107-34 03/24/95 10)34pfl1 5 OF ONE STORY ONE STORY �6 TYPICAL -"-""-"""" 22,427 S.F. r I .am • r • r_ r I r I 32,627 S.F. pw' I STRUCTURES: INSTALLED BY MAINTAINED BY d r 4 m FF = 900 = I aE k�� 2 CURB a .� ' \� _ FF = 900 /. VEGETATION/MULCNIN CONTRACTOR OPENING JIA DRAINAGEEASEMENT // n ♦ BASIN 3 / r. ] I '.I DATE SUBMITTED APPROVED BY CITY OF FORT C%LINS ON I! < A=0.592 AC "` ' rg IPfN THE PUT OF PR P[CF PARK EAST, P V.D.1 BASIN 2 NDI/TF.C:1989 ._ A=Q.961 AC QI OO 4 CFS 1 r ' -w �. , § • ._. ,.. . a •,� °• Q100wma 6 CFS _ 0100D 5.62 CFS1y�y IS TIY s v F Qi00D=7,88 CFS sEe.+cF AREA T I < saw : CP aided e. ' CONCENiRAON POINT [! OIOO- 162 CFS 0100w,232 TYPICAL) _. NOTE: V a. PROPOSED 8VA 1. SEDIMENT CONTROL FEATURES ARE NOT TO BE REMOVED UNTIL 1 AREA INLET ' y.:.., a �1 V \. r ` I F .,.�It NDSWO G PIAN AN REWIRED HABEENESTABLISHED, SEE .GRA,C 95:4R 9S*S'� - .. y% w PAN WI D LANDSCAPING A INV. 92.90 y a _ y1 \ INv 91 I2 MIX• .. . �b P _. a'f PROPOSED DN MAY AA 1V. w iT� II Iddi 8.92 LP OF 18' CLASS-111 • / \ vN 2. ALL EROSION AND SEDIMENT CWTROL FEATURES SHALL BE Ib �C fF RCP STA AT 0.20X OF ` CONSTRUCTED AND MAINTNNED IN ACCORDANCEWITH CITY - z q 100=9 85 CFSyI' S4 Lid a FORT cRLINS STANDARDS. BASIN 4Pvc sink(•, o.PSx A=1.206 DIi"d! - W/ F.E.B. ' \ 3. CITY SHALL NOT BE RESPONSIBLE FOR MAINTENANCE OF ONSITE Y B Q1OD=4.92 CFS(DRAINAGEFACILITIES THE STORM DRAINS SHOWN ON / STORM AMS. L E W E ' -, A IPRWOSED I THESE PLANS. b vm� �wa ' 0100D=9.6 CF E.•FUGr B - d ,8 /� /FGREM: 9 4. ALL CWSERUCTIW ACTIVITY NUS} STORRA WITH ME STATE OF ♦ m R ✓ �. ASSOCIATED PERMITTING CONSTRUCTION FM 'STWMWATER DISCHARGES ���.�p,r i . FL CRAZE: 85.5�1•'• I Mq ?�" e>n B I -�T- q B V ASSOCIATED AWTHCT COLORADOTDE ACTIVITIES". , W INFORMATION. 'N?di B 1� - :INV 92.W } NAw WENT : 1 PLEASE CONTACT CVIOCO- 0 DEPT. W HEALTH, WATER OUALITY ENFORCEMENT r .r r \ ``/ r 4i PROPOSED CONTROL PHONON, 03) 692E-82, ATM: PERMITS h ENFORCEMENT CURBINLET'.. ♦ r tP 6 X 6' ARM .' 4Y SE SEGIIW, PHONE (.HIS) 692-0590. r��` STOOP 1V0.]5A W tar \ 4' WENING `� s'0° sERMW PVC ST/L AT 0.251C it CRAVE: 97.50 \ .I'P • 5. IF CONSTRUCTION IS USED TO INSTALLWASTEWATER UTILITIES, THEN A STATE PROPOSED SHALL BE REWIRED IF CIS WASIEWA,ER DISCHARGE PERMIT INV 94.3] PROPOSED \ STORM MH SHALL L, REWIRED C TCH,ORLAN INTO A STORM SEWER Pw S W OF .7 E '�� % PROPOSED C?} RIM 9938 a . \ CHANNEL, IRRIGAPpI DITCH, OR ANY WRITERS OF THE UNITED PVC ST/L AT OJ5x \ \ P.� RIM 9 III00 As 129.81 Up INV 9238 F STATES I ¢\ RIM 92..70 . • o d - 129.81 A OF 2 e \• \\ PVC Si/L AT 0 5% u INV 92.]0 x4 6. ALL NCE VA Arv0 SEDIMENT CONTORT SHAG EL INSTALLED IN START DAM. MlH THE DRAINAGE REPORT W A RELATIVE BANS FROM .... \ \ •. AD( p START DAIS. i : q % ]. LANDSCAPE MATERIALS SHALL BE m ACCORDANCE MTI THE �7 CURB LANDSCAPE PLAN FOR THIS DEVELOPMENT. INSTALL ,A 2' NOEWALK CFS OPENING I-8' X 8' TAPPING SADDLE s ^Y 1-8' TAPPING VALVE O ' Pid, CHASE SI LEGEND CWSTRUCTW MALEFIC I -TALUS Bo%_ __- JCLESSJpNT..-eRRVIDE �- ,_Tnt! lss� 1�'�:_. -• of%ISTNG'SANITARYSEWDRAINAGE SUMMARY TABLE ER LTHRUST BL�CR�' OPENING IN SILT FENCE - EiL \ \� a.1 b t 4 •.. ® EXISTING SANITARY MANHOLE AAar sEc¢ss'eMIP� �� nq• �' - PRWOSEO SANITARY SEWER SERVICE (K)mPICM -" I � �'-r BASIN 1 BASIN 2 BASIN 3 BASIN 4 TOTALS EXISTING WATER LINE \ EXISTING FIRE HYDRANT ,� QIDD 6.52 CFS 4.W CFS 2.84 CFS 4.92 CFS 18.36 CFS EXISTING WATER VALVE I \\ 9Lv PROPOSED WATER LINE I \ �, TI - �L R� 2' CURB Q1 DOD 12.5 CFS 7.88 CFS 5.62 CFS 9.55 CFS 35.65 CFS OPENING �.' PROPOSED FIRE HYDRANT •. PROPOSED WATER VALVE - N REVISED: 5 10 95' 6 i6 95 • PROPOSED WATER MEWR \ \`� AR - PARK ENGINEERING -� PROPOSED STORM SEWER ` SILT FENCE PROPOSED AREA INLET \ CONSULTANTS 240 MAIN STREET • PROPOSED STORM SEWER MANHOLE \ ER LONCMONT CO. 80501 (303)651-662 PROPOSED CURB INLET PROPOSED TRANSFORMER \ - ADVANCED ENERGY ® 30 0 15 3O 60 - `` DRAINAGE @ EROSION CONTROL PLAN \ WHGINAL GALE: 1'-JO' \ L9 No ban cap No SHIFT NC 107-34 03/24/95 10)34pfl1 5 OF .N, ' I LEGEND p �. EXISTING $axrtARY SEWER bb WAS © b EXISTING SANITARY R MANHOLE - PND WT1ER =5 I VAN $EWE PROPOSED SANITARY $EWER SERVICE EXISTING WATER LINE /.Q I♦ - li 4 O EXISTING FIRE HYDRANT � / • .•yA I EXISTING WATER 0LVE 1 yg .OH PROPOSED WATER UNE CURS .. .. w' AND MY ER 4N11 �( PROPOSED FIRE HYDRANT �',: 1 I V24 PROPOSED WATER VALVE ViO 1�'20' UTILITY EASEME T PROPOSED WATER METER '� PROPOSED STORM SEWER �PROPOSEDAREA INLET iU' b :5.6 L..___ %G• I 16" ,b" i • PROPOSED STORM SEWER MANHOLE I L ' PROPOSED CURB INLET / Y CIS' NO PROPOSED TRANSFORMER I Q`. BUILDING 4 BUILDING 3 - AND GUTTER 1 r' ONE STORY - ..�j rnlcu I Tf♦:Y.. 1 r� i• 22,427 S.F. ONE STORY b9" 8 32,627 S.F. ) -! ' DkAll\AGE �1\JEMEIV'f' FF = 900 FF = 900 8 o6 'PER THE FLAT OF PRD3FO:T PARR FAST. P.U.D.I 1 `% TRAN RIVER I �' EUEV.: sro : VRACE AREA ' kl sM L IT ARX AREAONLE 1 \P� INV. •91 >INIUVu T .• —�.. \�� •�. 1 �` N GRATE 2 - M -_1 N INV. 92.90 � PP RW _ 1 � A 56VC If 26 1 •• y r �R. .. PSTA/L AT OJ5% 3 P8w/ F.E.S. � , v ` �. ` 1• 9.92 892 LF LF A 0. tCLASS M \\ •P� .�. i RCP ST/L AT 0.20% CONTRACTOR SHALL FIELD LINE THE IOCATON \ 1 OF ATIT O CO WATER LINE PRIOR TO I THE --- "••.�� byb ,\ /� 1 INI9ATIDN OF CON$iRUCTON AND NOTIFY THE e r• 1 �� ♦ ENGINEER CF ANY CONFLICTS. a PROPOSED EA METE P) CURB INLET EA NET 1 :� 06 OPENING 1 [ Xv MAI z 96.S FL CRATE: P JO 0 15 30 80 .� b� ```'•"� bs� 1 PA INV 92.00 MKXt PROPOSED • ' \ 9 s X b' ulxc°p0 6967 100.>SSIFD OF 2a' \ GNICINAL SCALE: 1'-30' CURB INLET ���`` 4. OPENING \ `•\�` Y •. ; [IOv u__ _ • bFRHCE PVC STA AT D35S FL GRATE: 97.50 INV 94.37 \ - �,y, PROPOSED \ PROPOSED � 12981 OF 24' wOSE M 'STORM '\ PVC St At 0.25E INV 92.m \ STORM MH 1 100.75 LF OF. 24' PROPOSED RIM 99.00 - I PVC ST/L AT'0.25% \ 222.27 LF OF 18'9' S , \ �iO ®`Y ♦ INV 92.)p PVC S2/L AT 0.75% ^ a INSTALL '• i 1 8' % 8 TAPPING SADDLE 0/ ,` '\ x' PROPOSE STORM SEWER PROFILE E VALVE BOX "APB \ ' 1-THRUST BLOCK �12RBP09ED G I_, _ I _. 1 E%SAiIOSRAOE� — — - -- .Vr»•..,.. _ INSTALL4900 relc.L _ yPP I � 4900 HOUR 48% 22L2) LE 18' PVC -A) OJS; - - _. 26' PVC • 0,25% 1 -- - a •, 100>5 V 24' PVC • 0.25% 54.00r LF 4' PpO. � ♦ `\ _ / / 4892 15% INSTALL CURB INLET _ �u4tC' _- A'2+ 129.9, 0.00"Ri .. -."TA }+52.08 O:DD`R 46 vx. YxER .. IN$TALLSWRB INLFT R W V.: 91J2 \ 4 •. / :... b?OPENING 'ITT sERWa ___{_ -._ I___ ..-. \ ♦ �\ y\ REVISED: 5 10 95' 6 16 95 4880 _INGRATE 9750 ` 0 wA I _+ NVO1�2�-MH--1 _...._-A- AI-ST-MH-..._L._._.._:- r nvw9�25IW 488a \ � ` 1 \,, / / \\ EPR LON CONSULTANTS ENGINEERING INV DDY 94 JY PARK 9. RIM: 1240 MAIN STREET 4884 -.-... _T-- r \ - :'MA ADVANCED ENERGY NSF' GRADING PLAN NO UP c4D xo SHEEJ N 0+00 I+W 2+ 3+00 4+00 5+00 - 107-36 OJ 24/95 10)J4GR1 4 OF 6