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HomeMy WebLinkAboutDrainage Reports - 10/07/1996OF FORT OwginNs Fin rv'u96 RepoO a+el6 5� Addendum to Final Drainage Study Report and Specifications Coventry Subdivision Filing No, 1 City of Fort Collins, Colorado April 6, 1996 Prepared For: Colorado Land Source, LTD. 9085 East Mineral Circle, Suite 200 Englewood, Colorado 80112 Prepared By: Northern Engineering Services, Inc. 420 South Howes, Suite 202 Fort Collins, Colorado 80521 (970)221-4158 Fax (970)221-4159 Project Number: COV; 9518.00 ' Northern Engineering Services, Inc. g g 11 April 6, 1996 City of Fort Collins Stormwater Utility 235 Mathews Fort Collins, Colorado 80522 1 RE: Coventry Subdivision, Filing No. 1 Crest Road Crossing Improvements ' Fort Collins, Colorado Project Number: 9518.00 Dear Staff: Northern Engineering is pleased to re -submit this Addendum to the Final Drainage Study Report and Specifications for Coventry Subdivision, Filing No. 1 for your review. We have addressed comments contained in the Project Comment ' Sheets dated March 31, 1996 and April 1, 1996. This report was prepared in compliance with technical criteria set forth in the City of Fort Collins Storm Drainage Design Criteria and Construction Standards manual. iIf you should have any questions or comments as you review this revised report, please feel free to contact me at your convenience. Sincerely, NORTHERP 1/�.V111J Mary B. Wo ES, INC. 1 420 S. Howes, Suite 202 • Fort Collins, Colorado 80521 • (970) 221-4158 • Fax (970) 221-4159 I I r Ai 1. I Addendum to Final Drainage Study for Coventry Subdivision Filing No. 1 I. INTRODUCTION 1.1 Objective To provide support documentation of the methodology used in the design of the ' improved culvert crossing of Mail Creek at Crest Road. 1.2 Mapping and Surveying Field surveys of the area surrounding the crossing were conducted by Landstar Surveying, Inc. Loveland, Colorado in July and December, 1995. Based on this field survey information, topographic mapping was computer generated by Northern Engineering Services, Inc. with a contour interval of one (1) foot. 1.3 Site Reconnaissance ' Numerous site visits and meetings have taken place with both the Stormwater Utility Department and the adjacent property owner, Joseph Bouchard. Survey information was confirmed in the vicinity of the crossing as well as the status of improvements on Crest Road. Concrete vertical curb and gutter was in place along the east and west sides of Crest Road and two (2) sidewalk culverts had been recently constructed at the Mail Creek crossing. II. SITE LOCATION 2.1 Site Location Coventry Subdivision is located in the North Half of Section 2, Township 6 North, Range 69 West of the 6th Principal Meridian in Fort Collins, Colorado. The project is bounded by Harmony Road to the north, South Shields Street on the west, .� and Crest Drive on the east. (See Vicinity Map). The location of the proposed culvert crossing is approximately 200 feet south of Harmony Road along Crest Road. III. PROPOSED CULVERT DESIGN 3.1 Design Data Coventry Subdivision is located in the McClellands/Mail Creek Drainage Basin. The Master Drainage Plan for this basin is currently being revised by RBD, Inc. and 1 under review by the City of Fort Collins Stormwater Utility Department. A figure of Addendum to Final Drainage Study Page 2 Coventry Subdivision Filing No. 1 322.4 cfs for the 100-year discharge associated with Mail Creek at Crest Road has been provided by Stormwater Utility (See Appendix) for use in design of the proposed culvert crossing under Crest Road. 1 3.2 Existing Conditions The size and type of the existing culvert under Crest Road was confirmed to be a twenty-four (24) inch CMP with a length of 70.8 I.f. and an existing slope of 0.62%. The McClellands and Mail Creek Drainage Study by Cornell Consulting Company shows overtopping of Crest Road during the 100-yr event. 3.3 Design Criteria and References Drainage criteria outlined in both the City of Fort Collins Storm Drainage Design Criteria Manual.(SDDCM) and Storm Drainage Criteria Manual by the Urban Drainage ' and Flood Control District have been used for this Final Drainage Study. 3.4 Hydraulic Criteria The computer program "HEC-2 Water Surface Profiles" developed by the U.S. Army Corps of Engineers was used to analyze the proposed culvert crossing under Crest Drive. ' The HEC-2 input file 02011804.ALT (See pages 1-4 in Appendix), generated by RBD, Inc. for the McClellands & Mail Creek 100-yr Floodplain Study, was modified to model the proposed crossing. The file generated by Northern Engineering Services, Inc. to include the proposed improvements is COV-C1.DAT (See Pages 7-17 in Appendix). 3.5 Proposed Improvements The proposed crossing under Crest Road will include three (3) forty-eight (48) inch reinforced concrete pipes (RCP) with a concrete apron comforming to the slope of the roadway embankment and a retaining wall at the upstream end. The pipes would be laid with the same grade and alignment as the existing twenty4our(24) inch CMP. A 100-year discharge of 322.4 cfs was used to size the culverts with and allowable overtopping of 0.5' over the crown in Crest Road and an assumed 20% debris blockage. The proposed crossing improvements will require a temporary construction easement on private property at the outlet end of the culverts. Mr. Bouchard has indicated verbally that an easement of this type is acceptable and a formal agreement has been initiated. Disturbance to the existing wetlands on the west side of Crest ' Road will be minimal with maximum disturbance zones clearly delineated on the construction plans Addendum to Final Drainage Study Page 3 Coventry Subdivision Filing No. 1 Grouted riprap will be placed at the outlet end of the pipes to reduce the velocity of the water and protect downstream embankments. The property owner has indicated that this type of erosion control is acceptable. ' The center pipe of the three (3) proposed 48" RCP's will require special forming to include a proposed frame and grate. The grate is required to drain the east ditch along Crest Road and direct runoff into the proposed pipe. The horizontal and vertical location of the grate is the same as the existing concrete inlet structure shown on the plan. Minor grading of the existing borrow ditch along the east side of Crest Road will be required to provide cover over the proposed pipes and drainage to the proposed grate. ' The capacity of the existing 2' metal sidewalk culvert, in the west flowline of Crest Road, has been determined to be inadequate for design flows of 4.0 and 14.3 cfs for the 2 and 100-yr storms respectively (See Appendix page 23). The existing metal culvert is to be removed and replaced with a 4' concrete sidewalk culvert which has been designed to convey the 2-yr flow of 4.0 cfs without curb overtopping. The existing concrete chase in the east flowline of Crest Road, directly opposite the 2' ' metal culvert, has ample capacity to convey both minor and major storms. IV. COMPLIANCE WITH STANDARDS 4.1 General All drainage analyses have been performed according to the City of Fort Collins Storm Drainage Design Criteria Manual (SDDCM) and the Urban Drainage and Flood Control District's Drainage Criteria Manual. V. CONCLUSION 5.1 Evaluation of Improvements ' The proposed improvements conform to the design standards of the City of Fort Collins and are intended to require minimal adverse impacts to adjacent existing properties. The most recent hydraulic and hydrologic information available has been used in the design of the proposed crossing. Input into the design of the proposed improvements has been provided by both Mr. Bouchard and the Stormwater Utility Department Addendum to Final Drainage Study Page 4 Coventry Subdivision Filing No. 1 REFERENCES 1. Storm Drainage Design Criteria and Construction Standards, City of Fort Collins, Colorado, May, 1984. 2. McClellands & Mail Creek 100-Yr Floodplain Study of the Mail Creek Tributary Along Harmony Road Between the Nodick Property and the Ridge Subdivision, RBD, Inc. August, 1995. 3. HEC-2 Water Surface Profiles, U.S. Army Corps of Engineers, September, 1990. 1 i 1 1 1 1 1 1 1 1 1 1 A 1 1 Addendum to Final Drainage Study Page 5 Coventry Subdivision Filing No. 1 APPENDIX PAGE Preliminary Master Plan HEC-2 Model By RBD ..............1 - 4 Design Flows From Stormwater Utility Dept . ....................5 - 6 HEC- 2 Output File COV-Cl ................................................ 7- 24 Crest Road Sidewalk Culvert Analysis .............................. 25- 28 Deed of Dedication for Easement .......................................... 29 Water Rights Decree........................................................ 30- 33 �fffNffNHfffrrfHMHrffHffffN•NffffH HrfflffffffrHrrlrrrfrrrrrrfffffffrfff 4EC-2 WATER SURFACE PROFILES • • U.S. ARMY CORPS OF ENGINEERS ' • • HYDROLOGIC ENGINEERING CENTER ' Version 4.6.2; may 1991 ' • 609 SECOND STREET, SUITE D ' • UAVIS, CALIFORNIA 95616-4687 RUN DATE 24MAY95 TIME 14:16:53 • (916) 756-1104 fffNfrHNffffy •' NrfrNffrrrHNfHffHfHHHfH•Nfff r - 11��+ XXXXXXX XXXXX XXXXX 4 i�ili� X X X X X X X X X X X XXXXXXX XXXX X XXXXX XXXXX X X X X X X X X X X X X X XXXXXXX XXXXX XXXXXXX 24MAY95 14:16:53 PAGE 1 �•••••••ffff frr►•fHHrrrNrrrf ffffrr HEC-2 WATER SURFACE PROFILES Fersion 4.6.2; May 1991 ��•Nrrr►wrrf rrrfrrrfNrHfafrrf f►rrrr MAIL CREEK FLOOOPLAIN ANALYSIS RBD HEC-2 DATA FILE 02011804.ALT ON SOUTH SIDE OF HARMONY AROUND COMMUNITY COLLEGE DEVELOPED 100 YR. FLOWS S ALTERNATIVE 1 WITH UPDATED CHANNEL AROUND COMMUNITY COLLEGE �1 ICHECK INO NINV 1D1R STRT METRIC HVINS 0 2 0 0 CODES FOR SUMMARY PRINTOUT JVARIABLE 150 101 NC .04 .035 .037 1 329.5 X-SECTIONS 11,18,23 AND 30 WERE PICKED UP 1N THE FIELD FOR BT CARDS 1 10 53 140 GR 5039.0 0.0 5038.0 21.0 5037.0 53.0 5036.0 5035.0 89.0 5036.0 114.0 5037.0 140.0 5038.0 2 15 99 165 33 33 35 5042.0 0 5041.0 20.0 5040.0 45.0 5039.0 GR 5037.0 101.0 5036.0 102.0 5035.0 104.0 5036.0 5038.0 165.0 5039.0 186.0 5040.0 206.0 5041.0 3 10 79 152 24 25 7..9 GR 5042.0 0.0 5041.0 13.5 5040.0 42.0 5039.0 GR 5038.0 127.0 5039.0 152.0 5040.0 172.0 5041.0 4 9 17 142 32 26 34 5D42.0 0 5041.0 8.0 i040.0 17.0 5039.0 GR 5039.0 119 5040.0 142 3041.0 166 5042.0 5 .03 38.1 .016 101.7 .03 129.J 309.6 X1 5 16 129.0 266.8 65.0 56.1 79.1 0,0 5044.8 32.4 5043.7 38.1 504;.4 '5048.6 5043.1 77.3 5042.8 95.4 5041.8 101.7 5040.9 TH!S RUN EXECUTED 2414AY95 14:16:53 WSEL '.a 5034.4 70.0 5035.0 81.0 171.0 5039.0 192.0 64.0 5038.0 99.0 106.0 5037.0 107.0 227.0 5042.0 245.0 79.0 5038.5 93.0 193.0 5042.0 211.0 68.:: 5038.7 89.9 184 .016 22+.2 .03 45.4 5.42.3 48.8 107.1 5040.!) 119.0 GR 5042.5 129.0 5039.3 139.2 5039.3 5041.4 309.6 NH 4 .016 78.8 .03 118.3 X1 6 15 116.9 223.4 133.8 GR 5044.6 0.0 5043.3 31.9 5043.8 GR 5041.5 91.6 5041.3 103.9 5042.9 5039.3 118.3 5039.3 195.2 5039.7 'GR 24MAY95 14:16:53 'NH 5 .03 19.7 .016 71.2 NH 290.0 RIGHT SIDE NOT EXTENDED VERTICALLY DUE TO HOUSE X1 7 18 99.9 Z90.0 90.2 5044.5 0.0 5044.3 19.7 5043.8 NGR GR 5043.8 71.2 5042.7 75.7 5042.0 GR 5041.0 109.5 5038.0 111.9 5039.3 GR 5039.8 214.6 5039.4 250.3 5046.0 NH 5 .03 19.6 .016 69.5 NH 326.7 X1 8 19 98.3 288.2 86.6 GR 5045.4 0.0 5044.8 19.6 5044.3 GR 5044.4 69.5 5042.6 76.2 5042.6 GR 5039.9 124.5 5038.0 128.2 5036.8 GR 5039.9 227.3 5039.8 253.6 5045.7 NN 3 .03 19.8 .016 70.8 1 9 21 115.9 281.4 110.8 5045.7 0.0 5045.5 19.8 5045.0 5045.2 70.8 5043.6 77.7 5043.4 GR 5044.6 115.9 5039.3 223.8 5039.3 5039.3 5046.3 250.1 320.6 5041.3 270.1 5043.2 NC 0.3 0.5 NH 4 .016 73.8 .03 242.0 DOWNSTREAM OF CREST RD. 24-INCH CMP 1 10 .23 242.0 2".0 70.0 3 10 GR 5046.3 0.0 5045.9 18.8 5045.4 5045.3 73.8 5044.3 81.3 5044.6 R OR 5044.5 127.7 5043.7 130.3 5041.4 R 5039.3 217.1 5039.3 219.1 5037.0 R 5043.0 273.4 5043.6 306.0 5045.6 C 1.024 0.80 3.0 0.0 2.0 H 4 .016 66.7 .03 242.0 1 12 11 242.0 244.0 32.6 X2 0 0 2.0 0 5042.8 10 0 0 0 0 T I3 .7 66.7 5045.5 80.1 T 260.0 5042.8 320.0 T 462.7 5046.5 GR 5046.8 0.0 5045.8 19.9 5046.8 5042.1 162.4 5040.2 236.5 5037.7 5046.5 462.7 24MAY95 14:16:53 NC 0 0 NH 3 .035 20.0 .016 77.3 13 20 211.6 309.0 114.1' 5046.8 0.0 5046.5 19.6 5046.1 5046.6 77.3 5045.7 82.4 5046.0 5043.6 211.6 5039.1 226.6 5038.5 5040.0 269.3 5042.5 286.1 5043.7 215.0 5039.4 .016 129.6 61.0 112.2 197.6 .03 89.8 20.1 90.0 113.4 290.0 .03 105.5 20.0 87.2 134.2 288.2 .03 92.1 20.2 91.2 226.2_ 281.4 .024 70.0 19.3 95.5 140.4 242.0 325.8 0.0 024 30.0 0 5045.5 5044.0 47.3 242.0 .035 122.7 20.0 85.9 228.7 309.0 224.2 5041.4 266.8 195.2 .03 260.2 136.7 5043.6 78.8 5042.9 83.9 5042.9 114.0 5C42.0 116.9 5041.4 223.4 5043.2 260.2 PAGE 113.4 .016 186.4 .03 98.8 5044.5 47.7 5044.3 66.4 5043.7 99.9 5043.4 102.6 5039.3 186.4 5039.8 194.4 128.2 .016 202.2 .03 66.8 5045.0 47.6 5044.8 66.2 5044.2 98.3 5044.0 103.1 5039.3 157.7 5039.3 202.2 5045.7 326.7 320.6 102.6 5045.8 48.1 5045.6 66.3 50".7 100.1 5044.6 105.1 5039.3 240.6 5019.3 241.8 5044.4 297.4 5045.8 309.6 244.0 .03 325.8 70.0 5042.2 5042.2 5046.4 46.6 5046.0 67.0 5044.9 103.7 5045.1 115.0 5040.0 157.8 5039.6 193.0 5037.0 244.0 5039.3 257.9 30.0 2" .0 27.9 0 5046.5 5037.7 468.4 173.1 5047.0 5046.6 5038.2 5047.9 2.2 5037.7 5037.0 .03 462.7 5042.8 5042.8 145.0 5044.0 400.0 5046.0 66.7 5045.5 2".0 5040.9 50.9 5046.9 87.5 5045.8 232.8 5038.2 433.3 5049.2 80.1 259.2 PAGE 3 71.2 136.1 245.0 468.4 tA 5 .035 20.3 .016 70.7 .035 164.7 .05 215.7 .035 35414 14 5048.7 16 0.0 101.8 5047.5 215.7 20.3 156.4 5048.2 132.7 47.0 113.3 5048.1 66.9 5047.8 5046.4 77.3 5048.0 81.8 5047.7 101.8 5042.9 144.4 5041.7 70.7 164.7 GR 5041.5 167.2 5040.8 190.4 5042.2 206.2 5045.0 215.7 5046.6 282.5 5048.4 354.3 3 .035 21.4 .016 77.7 .037 331.4 X1 15 14 139.0 241.5 157.3 169.6 182.4 GR 5049.3 0.0 5048.7 21.4 5048.2 22.0 5049.1 51.1 5049.1 77.7 5048.7 83.9 5047.1 90.7 5048.2 95.7 5046.5 139.0 5042.6 204.4 5041.6 211.6 5043.0 221.1 5047.7 241.5 5050.6 331.4 NH 4 .035 21.3 .016 80.2 .06 147.7 .035 293.9 16 13 80.2 147.7 163.8 164.0 159.1 5051.2 0.0 5049.8 21.3- 5050.6 ".0 5050.6 74.0 5049.8 80.2 5045.2 96.6 50".0 110.4 5043.4 118.3 5043.9 126.8 5045.3 134.4 GR 5049.2 147.7 5050.2 198.4 5053.0 293.9 3 .016 86.3 .035 121.9 .06 311.2 DOWNSTREAM OF 36-INCH CONC. PIPE CROSSING UNDER HARMONY RD. 17 12 92.4 121.9 58.0 58.0 58.0 GR 5052.1 5045.0 0.0 104.7 5050.2 5042.8 22.4 107.8 5051.0 5044.0 57.0 5050.9 86.3 5050.4 92.4 5053.6 272.0 5054.7 311.2 113.9 5047.7 121.9 5051.6 202.4 NH 3 .016 108.5 .06 124.4 .035 294.9 THE RESULTS SHOW THAT SECTIONS 19-25 AND 26 IN THE FULLY DEVELOPED CONDITION HAVE EXTENSIONS ON THE LEFT SIDE WHICH IS WHERE THE CENTERLINE OF HARMONY RD. IS. EVEN THOUGH THE EXTENSIONS MAKE THE RESULTS ERRONEOUS THE SECTIONS WERE LEFT AS IS BECAUSE THE RESULTS ARE A CONSERVATIVE ESTIMATE OF THE 100 YR FLOODPLAIN ON THE SOUTH SIDE OF HARMONY RD. IN THE FUTURE WHEN IMPROVEMENTS ARE MADE TO HARMONY RD OR THE REGIONAL DETENTION FACILITY UPSTREAM OF THIS LOCATION IS IN PLACE THIS PART OF THE MODEL WILL NEED TO BE REVISED. X1 19 8 103.8 124.4 160.0 135.0 150.0 5053.0 90.0 5052.6 103.8 5052.2 108.5 5050.8 114.6 5053.7 124.4 132.2 5054.3 178.4 5056.8 294.9 15052.4 2414AY95 14:16:53 PAGE 4 X1 3 20 .016 103.8 .035 124.4 .06 294.9 7 103.8 124.4 50.0 45.1 45.3 5052.5 5055.2 82.7 211.3 5052.6 5056.8 103.8 5052.2 108.5 5050.8 114.6 5053.7 124.4 294.9 NC 0.0 0.0 mm 3 .016 106.6 .06 129.3 .035 297.8 21 8 106.6 206.0 134.6 130.8 131.5 5054.0 5053.9 84,8 129.3 5053.9 5056.0 106.6 5053.9 110.4 5051.2 118.1 5051.4 121.6 206.0 °058.0 297.8 03 .5 5 306.0 .016 107.4 Ob 1199.0 .013 123.5 .06 135.8 .035 DOWNSTREAM OF HINSDALE DR. 3 - 23X14 INCH CONC. ARCH PIPES 22 10 119.0 123.5 90.0 90.0 90.0 10 5054.6 5054.6 5050.2 84.4 5054.6 107.4 5053.9 111.5 5050.2 5053.9 119.0 5053.9 5050.2 123.5 124.7 5051.7 131.4 5054.0 135.8 5057.0 242.2 5058.4 306.0 3.013 5 0.4 3.0 105.5 0 1.17 1.5 95.0 8.1 5051.6 5050.2 368.4 .016 .06 131.0 .013 135.5 .06 143.6 .035 X1 24 16 131.0 135.5 44.7 46.5 119.6 D 0 2.0 0 5055.9 ., 10 5055.9 5055.9 3/ I ' 12.000 5566.61 �• 24.000 5120.22 * 50.000 5461.34 24KAY95 14:16:53 RNATIVE 1 WITH UPDATED C Y PRINTOUT TABLE 150 I SECNO 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 9.000 10.000 12.000 13.000 14.000 15.000 16.000 17.000 19.000 20.000 21.000 22.000 24.000 25.000 26.000 27.000 1 24MAY95 SECRO .00 5548.55 5042.80 19.71 311.79 17.00 1.86 6.40 50".10 1.30 5044.11 .00 5099.77 5055.90 35.18 148.44 17.00 1.86 4.89 5056.49 4.24 5056.63 .00 5302.14 5084.00 8.37 72.93 17.00 .00 6.00 5085.50 .09 5085.50 PAGE 21 XLCH ELTRD ELLC ELMIN 0 CYSEL CRIYS EG 10•KS VCH - AREA .01K .00 .00 .00 5035.00 329.50 5036.62 5036.62 5037.06 214.58 5.36 61.48 22.49 35.00 .00 .00 5035.00, 329.50 5038.24 5038.24 5038.72 230.62 5.56 60.43 21.70 29.00 .00 .00 5038.00 ._329.50 5039.30 5039.30 5039.71 199.47 5.15 65.73 23.33 34.00 .00 .00 5038.70 329.50 5040.00 .00 5040.18 105.18 3.45 95.65 32.13 78.10 .00 .00 5039.30 329.50 5040.27 .00 5040.47 18.22 3.59 91.68 77.18 136.70 .00 .00 5039.30 329.50 5040.49 .00 5040.66 11.26 3.32 99.29 98.18 98.80 .00 .00 5038.00 329.50 5040.69 .00 5040.75 6.84 1.84 178.96 125.95 66.80 .00 .00 5036.80 329.50 5040.74 .00 5040.78 3.44 1.57 210.47 177.74 102.60 .00 .00 5039.30 329.50 5040.60 5040.60 5041.07 138.63 5.48 60.12 27.99 70.00 .00 .00 5037.00 329.50 5042.23 5042.23 5042.24 .73 1.59 365.05 385.58 27.90 5042.80 .00 5037.70 329.50 5044.10 .00 5044.11 .37 1.30 568.70 542.55 173.10 .00 .00 5038.20 329.50 5044.10 .00 5044.12 .98 .96 347.80 332.47 113.30 .00 .00 5040.80 329.50 50".11 .00 50".17 13.21 1.99 165.91 90.65 182.40 .00 .00 5041.60 329.50 5D44.48 .00 5044.Cu 89.72 4.56 72.26 34.79 159.10 .00 .00 5043.40 329.50 5046.24 .00 5046.50 125.71 4.08 80.67 29.39 58.00 .00 .00 5042.80 329.50 5046.69 5046.69 5047.75 158.40 8.28 39.79 26.18 150.00 .00 .00 5050.80 184.40 5053.26 5053.26 5053.80 107.26 4.10 36.99 17.81 45.30 .00 .00 5050.80 184.40 5053.90 .00 5054.04 11.46 2.11 67.31 54.47 131.50 .00 .00 5051.20 184.40 5054.21 .00 5054.49 160.95 4.07 44.13 14.53 90.00 .00 .00 5050.20 184.40 5054.23 .00 5054.77 5.98 7.07 68.54 75.43 119.80 5055.90 .00 5051.60 184.40 5056.49 .00 5056.63 1.65 4.24 175.45 143.41 48.90 .00 .00 5052.40 155.50 5056.63 .00 5056.67 4.49 1.78 102.38 73.37 657.50 .00 .00 5058.90 155.50 5060.65 5060.65 5060.95 247.97 4.40 35.30 9.87 147.50 .00 .00 5060.40 155.50 5062.83 .00 5063.11 95.50 4.21 36.89 15.91 14:16:53 PAGE 22 XLCH ELTRD ELLC ELMIN 0 CYSEL CR:YS EG 10•KS VCH AREA .01K Services Stormwater City of Fort Collins July 6, 1995 ' Northern Engineering Services 420 South Howes, Suite 202 Fort Collins, CO 80521 ' RE: McClellands/Mail Creek Master Plan Update: Preliminary Flows Through Coventry P.U.D. ' Dear Mike: The final master plan update is not yet complete but the hydrology update is fundamentally complete for existing and fully developed conditions without improvements. The attached SWMM runs and schematic can be summarized as follows: LOCATION West property line of Coventry (Element 39) Culvert Crossing Under Harmony (Element 17) Crest Road (Element 16) EXIST. FLOWS 190.4 ds 199.7 ds DEV.FLOWS (no detention) 324.8 ds 352.9 ds 4 ds 534.6 ds The minimum flows that should be allowed is the existing flows as listed above, however using the developed flows is more conservative and gives the Stormwater Utility more flexibility for future improvements. After you have had a chance to evaluate the effects of using these flows we can discuss the effects and discuss some improvements being proposed upstream that may aid you in making the final decision on the flow to be used. At this time the upstream improvements on the Westbury site are still 'being discussed and evaluated. ' If you have additional questions please feel free to contact me at 224 - 6065. Susan Hayes will be on vacation July 24 - 28 so please consider that on any submittals that may require her input. ' 235 Mathews Street • P.O. Box 580 • Fort lollin� (303) 221-6689 • FAX (NO) 221-0239 (0/ Sincerely, n , &V Glen D. Schlueter Storrnwater Development Review Manager Cc: James McCory, Managing Member McGraw Land L.L.C. Attachments SWMM run I 3 BEC-1 WATER SURFACE PROFILES 3 s t s Version 4.6.2; May 1991 t 3 i 3 RUN DATE 26JAN96 TIME 11:54:21 i 1 26JAN96 11:54:21 BEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 THIS MODEL IS BEING RUN TO SIZE PROPOSED CULVERT IMPROVEMENTS UNDER CREST ROAD FOR COVENTRY SUBDIVISION FILING NO. 1 RUN COMPLETED BY NORTHERN ENGINEERING SERVICES USING END ENGINEERING HEC-2 DECK FOR THE MAIL CREEK MASTER DRAINAGEWAY PLAN LATEST REVISION TO MODEL: 12/07/95 NORTHERN ENGINEERING HEC-2 FILE: COV-C1.DAT Tl MAIL CREEK FLOODPLAIN ANALYSIS RBD HEC-1 DATA FILE 01011804.ALT T2 ON SOUTH SIDE OF HARMONY ROAD AROUND COMMUNITY COLLEGE DEVELOPED 100-YR FLOWS T3 100-YR AT CREST ROAD Jl ICHECK INQ NJ NV JOIN STRT 0 2 0 0 0 J3 VARIABLE CODES FOR SUMMARY PRINTOUT 150 101 s O.S. ARMY CORPS OF ENGINEERS t i HYDROLOGIC ENGINEERING CENTER i $ 609 SECOND STREET, SUITE D i i DAVIS, CALIFORNIA 95616-4687 i $ (916) 756-1104 t PAGE I THIS RUN EXECUTED 26JAN96 11:54:21 METRIC HVINS Q WSEL 0 0 0 5036.61 FQ 0 NC .04 .035 .037 QT 1 322.4 K-SECTIONS 11, 18, 13 AND 30 WERE PICKED DP IN THE FIELD FOR BT CARDS Kl 1 10 53 140 0 0 0 OR 5039.0 0.0 5038.0 21.0 5037.0 53.0 5036.0 70.0 5035.0 81.0 GR 5035.0 89.0 5036.0 114.0 5037.0 140.0 5038.0 171.0 5039.0 192.0 11 2 15 99 165 33 33 33 GR 5042.0 0.0 5041.0 20.0 5040.0 45.0 5039.0 64.0 5038.0 99.0 GR 5037.0 101.0 5036.0 102.0 5035.0 104.0 5036.0 106.0 5037.0 107.0 GR 5038.0 165.0 5039.0 186.0 5040.0 106.0 5041.0 227.0 5042.0 245.0 K1 3 10 79 152 24 25 29 GR 5042.0 0.0 5041.0 .13.5 5040.0 41.0 5039.0 79.0 5038.5 93.0 GR 5038.0 127.0 5039.0 152.0 5040.0 172.0 5041.0 193.0 5042.0 211.0 %1 4 9 17 142 31 26 34 GR 5042.0 0.0 5041.0 8.0 5040.0 17.0 5039.0 68.0 5038.7 89.9 GR 5039.0 119.0 5040.0 142.0 5041.0 166.0 5042.0 184.0 IN 5 .03 38.1 .016 101.7 .03 129.0 .016 224.2 .03 IN 309.6 Kl 5 16 129 266.8 65 56.1 78.1 GR 5048.6 0.0 5044.8 32.4 5043.7 38.1 5043.4 45.4 5042.3 48.8 OR 5043.1 77.3 5042.8 95.4 5041.8 101.7 5040.9 107.1 5040.9 119.0 GR 5042.5 129.0 5039.3 139.2 5039.3 215.0 5039.4 224.2 5041.4 266.8 GR 5041.4 309.6 NH 4 .016 78.8 .03 118.3 .016 195.2 .03 260.2 Kl 6 15 116.9 223.4 133.8 129.6 136.7 GR 5044.6 0.0 5043.3 31.9 5043.8 61.0 5043.6 78.8 5042.9 83.9 GR 5041.5 91.6 5041.3 103.9 5042.9 112.2 5042.9 114.0 5042.0 116.9 GR 5039.3 118.3 5039.3 195.2 5039.7 197.6 5041.4 213.4 5043.2 260.2 NH 5 .03 19.7 .016 71.2 .03 113.4 .016 186.4 .03 NH 290.0 RIGHT SIDE NOT EXTENDED VERTICALLY DOE TO HOUSE 1! 7 18 99.9 290.0 90.2 89.8 98.8 GR 5044.5 0.0 5044.3 19.7 5043.8 20.1 5044.5 47.7 5044.3 66.4 OR 5043.8 71.2 5042.7 75.7 5042.0 90.0 5043.7 99.9 5043.4 102.6 GR 5041.0 109.5 5038.0 111.9 5039.3 113.4 5039.3 186.4 5039.8 194.4 GR 5039.8 214.6 5039.4 250.3 5046.0 190.0 io/ 1 263AN96 11:54:21 PAGE 2 NH 5 .03 19.6 .016 69.5 .03 128.2 .016 202.2 .03 NH 326.7 11 8 19 98.3 288.2 86.6 105.5 66.8 OR 5045.4 0.0 5044.8 19.6 5044.3 20.0 5045.0 47.6 5044.8 66.2 GR 5044.4 69.5 5042.6 76.2 5042.6 87.2 5044.2 98.3 5044.0 103.1 OR 5039.9 124.5 5038.0 128.2 5036.8 134.2 5039.3 157.7 5039.3 202.2 GR 5039.9 227.3 5039.8 253.6 5045.7 288.2 5045.7 326.7 NH 3 .03 19.8 .016 70.8 .03 320.6 11 9 21 115.9 281.4 110.8 92.1 102.6 OR 5045.7 0.0 5045.5 19.8 5045.0 20.2 5045.8 48.1 5045.6 66.3 GR 5045.2 70.8 5043.6 77.7 5043.4 91.2 5044.7 100.1 5044.6 105.1 GR 5044.6 115.9 5039.3 223.8 5039.3 226.2 5039.3 240.6 5039.3 241.8 GR 5039.3 250.1 5041.3 270.1 5043.2 281.4 5044.4 297.4 5045.8 309.6 OR 5046.3 320.6 RC .3 .5 NH 5 .035 65.57 .035 77.57 .035 109.91 .016 120.70 .035 NH 128.45 CROSS-SECTION 1 OF SPECIAL CULVERT METHOD DOWNSTREAM END OF 3-48" RCP'S 11 10 17 65.57 77.57 70 70 70 13 10 5040.87 5040.87 GR 5043.9 0.0 5040.0 21.57 5039.0 31.16 5038.55 33.9 5040.0 34.0 GR 5040.0 35.0 5038.6 63.57 5036.6 65.57 5036.6 71.57 5036.6 77.57 GR 5038.6 79.57 5041.0 86.68 5042.0 92.94 5043.0 108.47 5043.09 109.91 OR 5043.2 120.70 5044.0 128.45 INCLUDES 20% DEBRIS BLOCKAGE PER PIPE SC 3.013 0.1 3.0 0 3.6 0.0 60 3.2 5036.99 5036.62 NH 3 .04 1107.6 .013 1133.1 .04 1218.78 CROSS-SECTION 3 OF THE SPECIAL CULVERT METHOD 11 12 17 1107.6 1133.1 60 60 .60 K2 0 0 2.0 0 5043.16 13 10 5043.16 5043.16 BT -9 1048.78 5043.90 1070.35 5043.51 1107.60 5043.21 BT 1114.35 5043.18 1120.35 5043.16 1126.35 5043.18 BT 1133.10 5043.21 1170.35 5043.5 1218.78 5044.52 GR 5044.0 1000 5043.90 1028.49 5043.90 1048.78 5043.51 1070.35 5042.41 1107.50 GR 5042.4 1107.60 5042.4 1108.60 5037.24 1108.70 5037.04 1114.35 5037.04 1120.35 GR 5037.0 1126.35 5037.3 1132.0 5042.41 1132.10 5042.41 1133.10 5042.41 1133.2 GR 5043.5 1170.35 5044.52 1218.78 II/ I 263AN96 11:54:21 PAGE 3 NH 3 .04 1119.35 .013 1121.35 .04 1218.78 CROSS-SECTION 4 OF THE SPECIAL CULVERT METHOD 11 12.5 17 1119.35 1121.35 9 9 9 13 10 5042.41 5042.41 BT -15 1048.78 5043.90 5043.90 1070.35 5043.51 5043.51 1107.50 5042.41 5042.41 BT 1119.35 5042.41 5038.08 1119.52 5042.41 5038.63 1119.68 5042.41 5038.83 BT 1120.02 5042.41 5039.02 1120.35 5042.41 5039.08 1120.68 5042.41 5039.02 BT 1121.02 5042.41 5038.83 1121.18 5042.41 5038.63 1121.35 5042.41 5038.08 BT 1133.20 5042.41 5042.41 1170.35 5043.5 5043.5 1218.78 5044.52 5044.52 GR 5044.0 1000 5043.90 1028.49 5043.90 1048.78 5043.51 1070.35 5042.41 1107.50 GR 5038.0 1119.35 5037.5 1119.52 5037.3 1119.68 5037.1 1120.02 5037.0 1120.35 GR 5037.1 II20.68 5037.3 1121.02 5037.5 1121.18 5038.0 1121.35 5042.41 1133.20 GR 5043.5 1170.35 5044.52 1218.78 NC .04 .035 -.037 .1 .3 NH 3 .035 20.0 .016 77.3 .035 468.4 11 13 20 211.6 309 114.1 122.7 173.1 GR 5046.8 0.0 5046.5 19.6 5046.1 20.0 5047.0 50.9 5046.9 .71.2 GR 5046.6 77.3 5045.7 82.4 5046.0 85.9 5046.6 87.5 5045.8 136.1 GR 5043.6 211.6 5039.1 226.6 5038.5 228.7 5038.2 232.8 5038.2 245.0 GR 5040.0 269.3 5042.5 286.1 5043.7 309.0 5047.9 433.3 5049.2 468.4 NH 5 .035 20.3 .016 70.7 .035 164.7 .05 215.7 .035 MR 354.3 11 14 16 101.8 215.7 156.4 132.7 113.3 GR 5048.7 0.0 5047.5 20.3 5048.2 47.0 5048.1 66.9 5047.8 70.7 GR 5046.4 77.3 5048.0 81.8 5047.7 101.8 5042.9 144.4 5041.7 164.7 GR 5041.5 167.2 5040.8 190.4 5042.2 206.2 5045.0 215.7 5046.6 285.2 GR 5048.4 354.3 MR 3 .035 21.4 .016 77.7 .037 331.4 11 15 14 139.0 241.5 157.3 169.6 182.4 GR 5049.3 0.0 5048.7 21.4 5048.2 22.0 5049.1 51.1 5049.1 77.7 GR 5048.7 83.9 5047.1 90.7 5048.2 95.7 5046.5 139.0 5042.6 204.4 GR 5041.6 211.6 5043.0 221.1 5047.7 241.5 5050.6 331.4 NH 4 .035 21.3 .016 80.2 .06 147.7 .035 293.9 11 16 13 80.2 147.7 163.8 164.0 159.1 GR 5051.2 0.0 5049.8 21.3 5050.6 46.0 5050.6 74.0 5049.8 80.2 GR 5045.2 96.6 5044.0 110.4 5043.4 118.3 5043.9 126.8 5045.3 134.4 GR 5049.2 147.7 5050.2 198.4 5053.0 293.9 I Z/ 1 263AN96 11:54:21 PAGE 4 IN 3 .016 86.3 .035 121.9 .06 311.2 DOWNSTREAM END OF 36-INCH RCP UNDER HARMONY RD Ei 17 12 92.4 121.9 58 58 58 GR 5052.1 0.0 5050.2 22.4 5051.0 57.0 5050.9 86.3 5050.4 92.4 GR 5045.0 104.7 5042.8 101.8 5044.0 113.9 5047.7 121.9 5051.6 202.4 GR 5053.6 272.0 5054.7 311.2 1 1 1 1 1 1 i 26JAM96 11:54:21 SECNO DEPTH CWSEL CRIWS WSELE EG RV HL OLOSS L-BANE ELEV Q QLOB QCH QROB ALOB ACE ARON VOL TWA R-BANE ELEV TIME VLOB VCH VROB ENL %NCH INN WTN ELVIN SSTA SLOPE ELOBL ELCH ELOBR (TRIAL IDC ICONT CORAR TOPWID ENDST *PROF I 0 $SECNO 1.000 1.000 1.61 5036.61 5036.60 5036.61 5037.05 .44 .00 .00 5037.00 322.4 .0 322.4 .0 .0 60.8 .0 .0 .0 5037.00 .00 .00 5.30 .00 .000 .037 .000 .000 5035.00 59.63 .021128 0. 0. 0. 0 4 0 .00 70.22 129.86 =SECNO 2.000 3685 20 TRIALS ATTEMPTED WSEL,CWSEL 3693 PROBABLE MINIMUM SPECIFIC ENERGY 3720 CRITICAL DEPTH ASSUMED 2.000 3.28 5038.28 5038.28 .00 5038.69 .42 .66 .00 5038.00 322.4 1.8 319.3 1.3 1.3 61.3 .8 .0 .1 5038.00 .00 1.38 5.21 1.57 .040 .037 .035 .000 5035.00 89.31 .019171 33. 33. 33. 20 14 0 .00 81.50 170.81 =SECNO 3.000 3685 20 TRIALS ATTEMPTED WSEL,CWSEL 3693 PROBABLE MINIMUM SPECIFIC ENERGY 3720 CRITICAL DEPTH ASSUMED 3.000 1.29 5039.29 5039.29 .00 5039.69 .40 .56 .00 5039.00 321.4 2.2 318.8 1.4 1.5 62.6 .8 .1 .1 5039.00 .00 1.44 5.09 1.64 .040 .037 .035 .000 5038.00 68.30 1019747 24. 29. 25. 20 18 0 .00 89.48 157.78 tSECRO 4.000 4.000 1.28 5039.98 .00 .00 5040.17 .18 .48 .00 5040.00 322.4 .0 322.4 .0 .0 93.6 .0 .2 .2 5040.00 .01 .00 3.44 .00 .000 .037 .000 .000 5038.70 17.82 .010669 32. 34, 26. 2 0 0 .00 123.81 141.63 1490 NH CARD USED *SECNO 5.000 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, ERAT10 = 2.42. 5.000 .96 5040.26 .00 .00 5040.45 .20 .28 .00 5042.50 322.4 .0 322.4 .0 .0 90.4 .0 .3 .4 5041.40 .01 .00 3.57 .00 .000 .016 .000 .000 5039.30 136.14 .001819 65. 78. 56. 3 0 0 .00 106.36 242.50 PAGE 5 14/ 1 263AN96 11:54:21 SECNO DEPTH CWSEL CRINS WSELK EG BY RL OLOSS L-BANK ELEV Q QLOB QCH QROB ALOB ACE AROB VOL TWA R-BANK ELEV TIME VLOB VCH VROB KNL %NCH KNR WTN ELVIN SSTA SLOPE KLOBL KLCH KLOBR ITRIAL IDC ICONT CORAR TOPWID ENDST 1490 HE CARD USED =SECNO 6.000 6.000 1.18 5040.48 .00 .00 5040.65 .17 .19 .00 5042.00 322.4 .0 322.4 .0 .0 98.1 .0 .6 .7 5041.40 .02 .00 3.29 .00 .000 .016 .000 .000 5039.30 117.69 .001120 134. 137. 130. 2 0 0 .00 91.75 209.44 1490 HE CARD USED =SECHO 7.000 1530 MARKINGS N VALUES FOR CHANNEL COMPOSITED 7.000 2.68 5040.68 .00 .00 5040.73 .05 .08 .00 5043.70 322.4 .0 322.4 .0 .0 176.9 .0 .9 1.0 5046.00 .04 .00 1.82 .00 .000 .024 .000 .000 5038.00 109.76 .000681 90. 99. 90. 2 0 0 .00 148.24 258.00 1490 RE CARD USED $SECNO 8.000 1530 MAHNINGS N VALUES FOR CHANNEL COMPOSITED 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, KRATIO = 1.42 8.000 3.93 5040.73 .00 .00 5040.76 .04 .03 .00 5044.20 322.4 .0 322.4 .0 .0 208.4 .0 1.2 1.2 5045.70 .05 .00 1.55 .00 .000 .023 .000 .000 5036.80 120.19 .000339 87. 67. 106. 2 0 0 .00 138.83 259.03 1490 HE CARD USED =SECRO 9.000 3685 20 TRIALS ATTEMPTED WSEL,CWSEL 3693 PROBABLE MINIMUM SPECIFIC ENERGY 3720 CRITICAL DEPTH ASSUMED 9.000 1.29 5040.59 5040.59 .00 5041.05 .46 .10 .00 5044.60 322.4 .0 322.4 .0 .0 59.1 .0 1.5 1.4 5043.20 .06 .00 5.46 .00 .000 .030 .000 .000 5039.30 197.58 .013942 Ill, 103. 92. 20 17 0 .00 65.40 262.98 CCHV= .300 CEHV= .500 1490 ND CARD USED PAGE 6 I o/ 1 263AN96 11:54:21 SECNO DEPTH CWSEL CHINS WSELX EG MY HL Q QLOB QCH QROB ALOB ACE AROB VOL TIME VLOB VCR VROB XNL %NCH %RR WTN SLOPE XLOBL XLCH XLOBR (TRIAL 1DC ICONT CUBAN *SECRO 10.000 3302 WARNING: CONVEYANCE CHARGE OUTSIDE OF ACCEPTABLE RANGE, ERATIO = 4.83 GLOSS L-BANE ELEV TWA R-BARE ELEV ELVIN SSTA TOPWID ENDST 10.000 4.60 5041.20 .00 .00 5041.28 .08 .11 .11 5036.60 322.4 137.7 158.3 26.4 89.7 55.2 17.3 1.7 1.6 5036.60 .06 1.54 2.87 1.53 .035 .035 .035 .000 5036.60 14.94 .000597 70. 70. 70. 2 0 0 .00 72.98 87.92 SPECIAL CULVERT SC CDAO CDRY ENTLC. COFQ RULER RISE SPAR CULVLN CENT SCL 3 .013 .10 3.00 .00 3.60 .00 60.00 3 2 CHART 3 - CONCRETE PIPE CULVERT; BEVELED RING ENTRANCE SCALE 2 - (B) LARGE BEVEL = 0.083D 1490 NH CARD USED =SECRO 12.000 SPECIAL CULVERT OUTLET CONTROL + WEIR FLOW EG = 5043.45 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, XRATIO = 3.42 SPECIAL CULVERT EG1C EGOC 114 QWEIR QCULV VCH ACULV ELTRD WEIRLN 5042.68 5043.69 2.17 18. 306. 2.124 30.5 5043.16 86. 12.000 6.38 5043.38 .00 .00 5043.45 .07 2.17 .00 5042.40 322.4 2.6 317.2 2.6 16.0 149.3 16.2 1.9 1.7 5042.41 .07 .16 2.12 .16 .040 .013 .040 .000 5037.00 1074.71 .000051 60. 60. 60. 1 0 0 .00 91.58 1166.29 1490 NB CARD USED +SECNO 12.500 3370 NORMAL BRIDGE, RRD= 15 MIN ELTRD= 5042.41 MAX ELLC= 5039.08 3685 20 TRIALS ATTEMPTED WSEL,CWSEL 3693 PROBABLE MINIMUM SPECIFIC ENERGY 3720 CRITICAL DEPTH ASSUMED 12.500 6.73 5043.73 5043.73 .00 5044.09 .36 .00 .14 5038.00 322.4 132.9 55.7 133.8 46.0 5.8 46.1 2.0 1.7 5038.00 .07 2.89 9.67 2.90 .040 .013 .040 .000 5037.00 1058.20 .011370 9. 9. 9. 20 10 0 -58.46 123.04 1181.25 PAGE 7 ELCHU ELCHD 5036.99 5036.62 I 263AN96 11:54:21 SECRO DEPTH CWSEL CRIWS WSELK EG RV HL GLOSS L-BANK ELEV Q QLOB QCH QROB ALOE ACH AROB VOL TWA R-BANK ELEV TIME VLOB VCR VROB &NL INCH ERR WTN ELVIN SSTA SLOPE KLOBL KLCH KLOBR (TRIAL IDC ICONT CORAR TOPWID ENDST CCHV= .100 CEHV= .300 1490 NH CARD USED =SECNO 13.000 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, KRATIO = 11.23 13.000 5.95 5044.15 .00 .00 5044.17 .01 .05 .03 5043.60 322.4 .9 321.1 .4 5.2 345.0 3.0 2.8 2.1 5043.70 .12 .17 .93 .15 .035 .035 .035 .000 5038.20 192.75 .000090 114. 173. 123. 2 0 0 .00 129.55 322.30 1490 NH CARD USED ;SECNO 14.000 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, KRATIO = .27 14.000 3.35 5044.15 .00 .00 5044.21 .06 .03 .01 5047.70 322.4 .0 322.4 .0 .0 169.0 .0 3.5 2.4 5045.00 .14 .00 1.91 .00 .000 .044 .000 .000 5040.80 133.28 .001197 156. 113. 133. 2 0 0 .00 79.55 212.83 1490 NH CARD USED ;SECNO 15.000 3302 WARNING: CONVEYANCE CHANGE OUTSIDE OF ACCEPTABLE RANGE, KRATIO = .36 15.000 2.83 5044.43 .00 .00 5044.76 .33 .47 .08 5046.50 322.4 .0 322.4 .0 .0 70.1 .0 4.0 2.7 5047.70 .15 .00 4.60 .00 .000 .037 .000 .000 5041.60 173.54 .009313 157. 182. 170. 2 0 0 .00 53.81 227.35 1490 NH CARD USED =SECRO b-lH0 16100 2.82 5046.21 .00 .00 5046.47 .25 1.70 .01 5049.80 322.4 .0 122.( .0 .0 79.7 .0 4.3 2.8 5049.20 .16 .00 4.04 .00 .000 .060 .000 .000 5043.40 92.96 .012458 164. 159. 144. 2 0 0 .00 44.58 137.54 PAGE 8 t 261AN96 11:54:21 SECRO DEPTH CWSEL CRIWS WSELE EG HV HL OLOSS L-BANE ELEV Q QLOB QCH QROB ALOB ACH ARON VOL TWA R-BANE ELEV TIME VLOB VCR VROB ENL ENCH ENR WTN ELMIN SSTA SLOPE ELOBL ELCH ELOBR ]TRIAL IDC ICONT CORAR TOPWID ENDST 1490 NO CARD USED =SECNO 17.000 3301 HV CHANGED MORE THAN HVINS 7185 MINIM➢M SPECIFIC ENERGY 3720 CRITICAL DEPTH ASSUMED 17.000 3.85 5046.65 5046.65 .00 5047.71 1.05 .81 .24 5050.40 322.4 .0 322.4 .0 .0 39.1 .0 4.3 2.9 5047.70 .16 .00 8.24 .00 .000 .035 .000 .000 5042.80 100.93 .015878 58. 58. 58. 3 11 0 .00 18.70 119.64 11 PAGE 9 1 26JAN96 11:54:21 PAGE 10 THIS RUN EXECUTED 263AN96 11:54:28 HEC-2 HATER SURFACE PROFILES Version 4.6.2; May 1991 NOTE- ASTERISK (i) AT LEFT OF CROSS-SECTION NUMBER INDICATES MESSAGE IN SUMMARY OF ERRORS LIST 100-YR AT CREST ROAD SUMMARY PRINTOUT TABLE 101 SECRO EGOC ELLC. EGIC ELTRD QCULV QWEIR CLASS H4 DEPTH CWSEL t 12.000 5043.69 .00 5042.68 5043.16 306.36 18.07 17.00 2.17 6.38 5043.38 1 26JAN96 11:54:21 100-YR AT CREST ROAD SUMMARY PRINTOUT TABLE 150 VCH EG 2.12 5043.45 PAGE 11 SECNO XLCH ELTRD ELLC ELMIN Q CWSEL CRIWS EG 10iKS VCH AREA OIK 1.000 .00 .00 .00 5035.00 322.40 $036.61 5036.60 5037.05 211.28 5.30 60.83 22.18 i 2.000 33.00 .00 .00 5035.00 322.40 5038.28 5038.28 5038.69 191.71 5.21 63.42 23.28 i 3.000 29.00 .00 .00 5038.00 322.40 5039.29 5039.29 5039.69 197.47 5.09 64.98 22.94 4.000 34.00 .00 .00 5038.70 322.40 5039.98 .00 5040.17 106.69 3.44 93.64 31.21 = 5.000 78.10 .00 .00 5039.30 322.40 5040.26 .00 5040.45 18.19 3.57 90.43 75.59 6.000 136.70 .00 .00 5039.30 322.40 5040.48 .00 5040.65 11.20 3.19 98.08 96.34 7.000 98.80 .00 .00 5038.00 322.40 5040.68 .00 5040.73 6.81 1.81 176.86 123.58 i 8.000 66.80 .00 .00 5036.80 322.40 5040.73 .00 5040.76 3.39 1.55 208.36 175.00 t 9.000 102.60 .00 .00 5039.30 322.40 5040.59 5040.59 5041.05 139.42 5.46 59.06 27.30 i 10.000 70.00 .00 .00 5036.60 321.40 5041.20 .00 5041.28 5.97 2.87 162.15 131.94 t 12.000 60.00 5043.16 .00 5037.00 322.40 5043.38 .00 5043.45 .51 2.12 181.51 451.49 i 12.500 9.00 5042.41 5039.08 5037.00 322.40 5043.73 5043.73 5044.09 113.70 9.67 97.92 30.24 ' = 13.000 173.10 5038.20 322.40 .00 .00 5044.15 .00 5044.17 .90 .93 353.18 339.41 ' = 14.000 113.30 .00 .00 5040.80 322.40 5044.15 .00 5044.21 11.97 1.91 169.05 93.20 = 15.000 182.40 .00 .00 5041.60 322.40 5044.43 .00 5044.76 93.13 4.60 70.08 33.41 ' 16.000 159.10 .00 .00 5043.40 322.40 5046.22 .00 5046.47 124.58 4.04 79.73 28.89 17.000 58.00 .00 .00 5042.80 322.40 5046.65 5046.65 5047.71 158.78 8.24 39.11 25.59 1 263AN96 11:54:21 PAGE 12 ' 100-YR AT CREST ROAD ' SUYWARY PRINTOUT TABLE 150 ' SECNO Q CWSEL DIFWSP DIFWS% DIFWWS TOPWID ELCN 1.000 322.40 5036.61 .00 .00 .00 70.22 .00 ' = 2.000 322.40 5038.28 .00 1.67 .00 81.50 33.00 = 3.000 322.40 5039.29 .00 1.01 .00 89.48 29.00 ' 4.000 322.40 5039.98 .00 .70 .00 123.81 34.00 ' 5.000 321.41 1140,26 .11 .17 .11 106.36 78.10 6.000 322.40 5040.48 .00 .22 .00 91.75 136.70 7.000 322.40 5040.68 .00 .20 .00 148.24 98.80 = 8.000 322.40 5040.73 .00 .05 .00 138.83 66.80 ' 9.000 322.40 5040.59 .00 -.14 .00 65.40 102.60 + 10.000 322.40 5041.20 .00 .61 .00 72.98 70.00 11.000 322.40 5043.38 .00 2.18 .00 91.58 60.00 ' = 12.500 322.40 5043.73 .00 .35 .00 123.04 9.00 = 13.000 322.40 5044.15 .00 .43 .00 129.55 173.10 ' f 14.000 322.40 5044.15 .00 -.01 .00 79.55 113.30 15.000 322.40 5044.43 .00 .28 .00 53.81 182.40 16.000 322.40 5046.22 .00 1.79 .00 44.58 159.10 ' = 17.000 322.40 5046.65 .00 .43 .00 18.70 58.00 Zo / I 263AN96 11:54:21 SUMMARY OF ERRORS AND SPECIAL NOTES CAUTION SECNO= 2.000 PROFILE= 1 CRITICAL DEPTH ASSUMED CAUTION SECNO= 2.000 PROFILE= 1 PROBABLE MINIMUM SPECIFIC ENERGY CAUTION SECNO= 2.000 PROFILE= 1 20 TRIALS ATTEMPTED TO BALANCE WSEL CAUTION SECNO= 3.000 PROFILE= 1 CRITICAL DEPTH ASSUMED CAUTION SECNO= 3.000 PROFILE= l PROBABLE MINIM➢M SPECIFIC ENERGY CAUTION SECNO= 3.000 PROFILE= l 20 TRIALS ATTEMPTED TO BALANCE WSEL WARNING SECNO= 5.000 PROFILE= 1 CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE WARNING SECNO= 8.000 PROFILE= I CONVEYANCE CHARGE OUTSIDE ACCEPTABLE RANGE CA➢TION SECNO= 9.000 PROFILE= I CRITICAL DEPTH ASSUMED CA➢TION SECNO= 9.000 PROFILE= 1 PROBABLE MINIMUM SPECIFIC ENERGY CAUTION SECNO= 9.000 PROFILE= 1 20 TRIALS ATTEMPTED TO BALANCE WSEL WARNING SECNO= 10.000 PROFILE= 1 CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE WARNING SECNO= 12.000 PROFILE= 1 CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE CAUTION SECNO= 12.500 PROFILE= 1 CRITICAL DEPTH ASSUMED CAUTION SECNO= 12.500 PROFILE= 1 PROBABLE MINIMUM SPECIFIC ENERGY CAUTION SECNO= 12.500 PROFILE= l 20 TRIALS ATTEMPTED TO BALANCE WSEL WARNING SECNO= 13.000 PROFILE= 1 CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE WARNING SECNO= 14.000 PROFILE= I CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE WARNING SECNO= 15.000 PROFILE= 1 CONVEYANCE CHANGE OUTSIDE ACCEPTABLE RANGE CA➢TION SECNO= 17.000 PROFILE= l CRITICAL DEPTH ASS➢MED CAUTION SECNO= 17.000 PROFILE= 1 MINIMUM SPECIFIC ENERGY PAGE 13 Q O N w U U � 0 of U W Uv (f) o z_Z �w W J W � Z � J Z W W 0 Z U o = N N U 0 O W Z S U V) Z Z 0_ U o N Q F- W 00 Wa o m N V) o� r ou a �>� D w o d 0 C W J W 0 OJ l .� 0 < l l o 4w 11 c U Il C ll o N 0 1 4-J o ll 4-f 0LO 1 �/ L LO OD o U I I J W N 3 i Of o U 0 0 W 0 I N 0 0 0 o o co ID v w O m 0 In V 7 O O V O o o M M O o In fn In !n Uo in n u011'en913 m 0 0 a Q N bj U U � O UJ W U N O Z Z E W W W Z � J Z W W N Z O (U 0� m W N � C7 o I Of w Z N O Z S Z � Ld W^ W N W o - N N V) CO N J r C)u o a a 0 0 1 W 3 Of >l �o a J Q � W 0� ll .� 111 az ++ o < llll W ^ ll ll N Ni llll N 0 o Lo lull (n N w iltl 0 U, 111 lil U l o l �w . 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Q,oO = �• �S� C J> C . 24) = 2-0 5 cj� DEVELOPED DRAINAGE COVENTRY SUBDIVISION FILING NO.2, Fort Collins, CO. File Number. DSNPNTD5.WQ1 16-Au -95 Calcs B : MBW DESIGN POINT D5: (Includes Basin D5 & 3) TOTAL AREA = A (ac)= 2.695 RUNOFF COEFFICIENTS: (From Table 3-3) Area of Roofs (ac)= 0.0000 C for Roofs = 0.95 Area of Concrete & Asphalt(ac)= 0.0000 C for Concrete = 0.95 Area of Gravel Parking (ac)= 0.00W C for Gravel = 0.50 Area of Lawn (ac)= O.(XXX) C for Lawn = 0.20 COMPOSITE RUNOFF COEFFICIENT: C= 0.82(1.395ac)+0.53(1.30) = 0.68 2.695 Cf = 1.00 (Frequency Adjustment Factor; Storm Return Period of 2- Years) Cf = 1.25 (Frequency Adjustment Factor, Storm Return Period of 100- Years) OVERLAND FLOW: Total Overland now length = I I' L (ft)= S (%) _ C= GUTTER FLOW: L (ft)= S(%)= V(fps) = T2 = 1.87 (I.l - CCf) SQRT(L) = 4.4 min 11 CUBRT(S) 54.0-53.78= 2.1X1 Tim = 1.87(I.1-CCf)SQRT(L) = 4.2 min 11 CUBRT(S) 0.20 1138 Tl = L = 9.5 min 53.28-41.58= 1.03 60(V) 1138 2.(X) (From Figure 3-2) 2-YEAR TIME OF CONCENTRATION; Tc2 = 100-YEAR TIME OF CONCENTRATION; Tc 100 = RAINFALL INTENSITY: FROM FIGURE 3-1: i2(in/hr)= 2.18 Q2(cfs) = CCf x i2 x A = 4.0 QI00(Cfs) = CCf x i100 x A = 14.3 13.9 min 13.7 min il(X)(in/hr)= 6.250 �W/ Z,/ UDINLET: INLET AYDARULICS AND SIZING DEVELOPED BY DR. JAMES GUO, CIVIL EKG DEPT. U OF COLORADO AT DENVER SUPPORTED BY METRO DENVER CITIES/COUNTIES AND UDAFCD - ---------------------------------------- USER:Northern Engineering Services -Ft Collins Colorado ....................... DATE 12-19-1995 AT TIME 11:52:17 rtx PROJECT TITLE: Coventry: Crest Road ' ktt CURB OPENING INLET HYDRAULICS AND SIZING: ' INLET ID NUMBER: 1 INLET HYDRAULICS: IN A SUMP. ' GIVEN INLET DESIGN INFORMATION: ' GIVEN CURB OPENING LENGTH (ft): 4.00 wc HEIGHT OF CURB OPENING (in): 6.00 INCLINED THROAT ANGLE (degree): 63.43 LATERAL WIDTH OF DEPRESSION (ft): 2.00 SUMP DEPTH (ft): 0.08 Note: The sump depth is additional depth to flow depth. ' STREET GEOMETRIES: STREET LONGITUDINAL SLOPE (1) = 0.70 STREET CROSS SLOPE (1) = 2.00 ' STREET MANNING N 0.016 GUTTER DEPRESSION (inch)= 2.00 GUTTER WIDTH (ft) = 2.00 ' STREET FLOW HYDRAULICS: ' WATER SPREAD ON STREET GUTTER FLOW DEPTH (ft) = (ft) = 11.78 0.40 FLOW VELOCITY ON STREET (fps): 2.58 FLOW CROSS SECTION AREA (sq ft)= 1.55 ' GRATE CLOGGING FACTOR (1)= 50.00 CURB OPENNING CLOGGING FACTOR(1)= 20.00 ' INLET INTERCEPTION CAPACITY: IDEAL INTERCEPTION CAPACITY (cfs)= 5.91 BY FAA BEC-12 METHOD: DESIGN FLOW (cfs)= 4.00 FLOW INTERCEPTED (cfs)= 4.00 ' CARRY-OVER FLOW (cfs)= 0.00 BY DENVER UDFCD METHOD: DESIGN FLOW (cfs)= 4.00 FLOW INTERCEPTED (cfs)= 4.00 ' CARRY-OVER FLOW. (cfs)= 0.00 I .v L/+-C1-e QZ d_- CX..J rl _7 '-. s GYM a.6g3 = Z%5 I Z I✓lC'rTYi <7 C� � ✓ram i— , •J N o. 2 ) -------- ----- ---------- --- ------ - - - UDINLET: INLET HYDARULICS AND SIZING DEVELOPED BY DR. JAMES GUO, CIVIL EKG DEPT. U OF COLORADO AT DENVER SUPPORTED BY METRO DENVER CITIES/COUNTIES AND UD&FCD ------------------------------------------------------------------------------ R:Northern Engineering Services -Ft Collins Colorado ....................... DATE 12-19-1995 AT TIME 12:08:26 * PROJECT TITLE: Coventry: Crest Road ' ttr CURB OPENING INLET HYDRAULICS AND SIZING: INLET ID NUMBER: 1 INLET HYDRAULICS: IN A SUMP. ' GIVEN INLET DESIGN INFORMATION: GIVEN CURB OPENING LENGTH (ft): 4.00 ' HEIGHT OF CURB OPENING (in): 6.00 INCLINED THROAT ANGLE (degree): 63.43 LATERAL WIDTH OF DEPRESSION (ft)- 2.00 SUMP DEPTH (ft): 0.03 Note: The sump depth is additional depth to flow depth. ' STREET GEOMETRIES: STREET LONGITUDINAL SLOPE (1) = 0.70 STREET CROSS SLOPE (1) _ 2.00 STREET MANNING N 0.016 GUTTER DEPRESSION (inch): 2.00 GUTTER WIDTH (ft) _ 2.00 ' STREET FLOW HYDRAULICS: WATER SPREAD ON STREET (ft) 20.22 GUTTER FLOW DEPTH (ft) = 0.57 FLOW VELOCITY ON STREET (fps): 3.37 FLOW CROSS SECTION AREA GRATE CLOGGING FACTOR (sq ft): (1)= 4.25 50.00 CURB OPENNING CLOGGING FACTOR(%)- 20.00 ' INLET INTERCEPTION CAPACITY: IDEAL INTERCEPTION CAPACITY (cfs)= 8.12 BY FAA HEC-12 METHOD: DESIGN FLOW (cfs)= ' FLOW INTERCEPTED (cfs)- CARRY-OVER FLOW (cfs)= BY DENVER UDFCD METHOD: DESIGN FLOW (cfs)= ' FLOW INTERCEPTED (cfs)= CARRY-OVER FLOW (cfs)= 14.30c 7.27 7.0� SPi`C o Z �.l�c cr 14.30 �—� B C ✓. 43. (� 6.50 7.80 Zg / DEED OF DEDICATION FOR EASEMENT KNOW ALL MEN BY THESE PRESENTS: That the undersigned Joseph Bouchard, being the owner of certain real property in Larimer County, Colorado legally described at Reception No. 136056 in the Larimer County Records, in consideration of Ten Dollars ($10.00) in hand paid, receipt of which is hereby acknowledged, and other good and valuable consideration, does hereby dedicate, transfer and convey to the City of Fort Collins, ' Colorado, a Municipal Corporation, for public use for a temporary easement for grading & construction for the sole purpose of installing 3 new 48" culverts under Crest Road. This ' easement shall expire once these culverts & associated improvements have been approved and accepted by the City of Fort Collins Stormwater Utility in the City of Fort Collins, County of Larimer, State of Colorado, more particularly described on Exhibit "A" attached hereto ' and by this reference made a part hereof. ' Witness our hands and seals this.Oa 199 G for Title: ' ATTEST: ' Title: State of &Ck4%LAJ l County of t4s All) ) ss ' The foregoing instrument was acknowledged before me this ��day of 199by dosovNk (s. gOlJr:1" Q i•l9'OeQ. , and i9d2—% (cL as - ' Witness my hand and official seal. PATRICIA TRACY COMM. #1054337 �.f p 0 MDUIRYPU XC-CALJFOFNA ' My commission expires: 1 aiL . �q —i LOSAI GELESCOLIM Comm w ExIL, 2k 106 Notary Publio----� Accepted by the City of Fort Collins on the day of 199 ' City Clerk 3 C>/ LIND, LAWRENCE & OTTENHOFF ATTORNEYS AT LAW THE LAW BUILDING 1011 ELEVENTH AVENUE P.O. BOX 326 GREELEY, COLORADO 80632 GEORGE H. OTTENHOFF KENNETH F. LIND KIM R. LAWRENCE 1EFFREY R. BURNS March 6, 1996 Ms. Mary Wohnrade Northern Engineering 420 S. Howes, Suite 202 Ft. Collins, CO 80521 Re: Joseph G. Bouchard Dear Mary: TELEPHONE (970) 353-2323 (970) 356.9160 TELECOPIER (970) 356-1111 Please find enclosed a copy of the decree to Joseph Bouchard in Case N4 9323 for Bouchard Pond. Sincerely, LIND, LAWRENCE & OTTENHOFF Kim R. Lawrence KRL/jer Enclosure PC: Joseph Bouchard (w/enc) 0 F:\KIM\OFF\WOHNRADI.LTR LIAR 1 41919 Y: � S Ot 3V I 1 1 1 1 IN THE WATER COURT IN AND FOR WATER DIVISION NO. 1 STATE OF COLORADO CASE NO. W-9323• JAN 111979 IN THE MATTER OF THE APPLICATION ) FOR WATER RIGHTS OF ) FINDINGS AND RULING 1 OF THE REFEREE JOSEPH G. BOUCHARD ) AND DECREE OF THE WATER COURT IN LARIMER COUNTY, COLORADO. ) THIS CLAIM, having been filed with the Water Clerk, Water Division No. 1, on August 21, 19701 and the Referee being fully advised in the premises, does hereby find: All notices required by law of the filing of this application have been fulfilled, and the Referee has juris- dication of this application. No statement of opposition to said application has been filed, and the time for filing such statement has expired. All matters contained in the application having been reviewed, and"testimony having been taken where such testi- mony is necessary, and such corrections made as are indicated by the evidence presented herein, IT IS HEREBY THE RULING OF THE WATER REFEREE: 1. The name ana nAelr,cc f ,-v, ., Joseph G. Bouchard 4620 Crest Road Fort Collins, Colorado 80526 2. The name of the structure: Bouchard Pond 3. Location of structure: Bouchard Pond will be located in the Northeast Quarter.of the Northwest Quarter of the North- east Quarter (NE 1/4, Nil 1/4, NE 1/4) of Section Two (2), Township Six (6) North, Range Sixty- nine (69) West of the Sixth (Gth) P.M., Larimer County, Colorado. ' 4. Description of Structure: Height of dam: Less than 10 feet. ' (non -jurisdictional) ' Length of dam: 60 feet. Maximum depth of pond: 8 feet. ' Storage capacity: 3 acre-feet.. 5. Source of Water: ' Natural flow of Mail Creek, seepage, and Applicant's own tailwater from his ditch -water irrigation. ' 6. Date of Initiation of Appropriation: ' July 18, 1978. CONDITIONAL 7. Amount of Water: ' Three (3) acre-feet. CONDITIONAL 8. Use of the.Water: ' Irrigation, recreation, landscaping and commercial. ' 9. Description of Land Irrigated:_ .Supplemental irrigation of ten (10) acres ' described as Lots One (1) and Two (2'), Brookwood Estates, a part of the Northeast Quarter (NE 1/4) ' of Section Two (2), Township Six (6) North, Range Sixty-nine (69) West of the Sixth (6th) P.M., Larimer County, Colorado. 1 The priorities herein awarded were filed in the Water Court in the year 1978, and shall be administered as having been filed in that year; and shall be junior to all priorities filed in ' previous years. As between all rights, filed in the same caletlaer year, (J11UviCS Slla tt LC ut �c�1iiy i1cu u.:Q ..a:J of appropriation and not affected by the date of entry of ruling. It is also ordered that the conditional rights herein awarded are hereby continued in full force and effect until January , 1983:'.If Applicant desires to maintain such conditional 3 y� 1 7 -� W - Y31Q3 ' decree, an application for quadrennial findings of reasonable - diligence shall be filed on or before January , 1983 , or a showing made on or before such date that the conditional water ' rights have become absolute water rights by reason of the completion of the appropriation. Bouchard Pond shall have an outlet pipe and gate installed so ' that the pond may be drained. The outlet pipe shall be of sufficient size to pass all normal flows. 1 1 I DATED this llth day of January , 1979. RA M9ND S. LIESMAN Water Referee, Division No. I State of Colorado THE COURT DOTH FIND: NO PROTEST WAS FILED IN THIS MATTER. THE FOREGOING RULING IS CONFIRMED AND APPROVED, AND IS HEREBY MADE THE JUDGMENT AND DECREE OF THIS COURT. Dated: Water Judge, Division No. I State of Colorado Certified to be o full, true and correct copy of Ii.* 6j i._�nr,! !�: u••. U:l O;ly, CLERK, VGA I .43 V. 1 STATE OF COLORADO li- , - 3- TEEL �MP CRMMOR Art auarWE RAU AW RWE "I UALB1 MxIvanondct PRICARA WADI MH LE AT WA /.UfA PAL v.wnw NE STANDARD PIPE CASING DETAIL .FI. me NOTES: 1 CONTRACTOR TC PROVIDE TRAFFIC CONTROL PLAN To Cn( OF FORT COLLINS ENGINEERING DEPARTMENT PRIOR TO COMMENCEMENT OF CONSTRUCTION. DURING CONSTRUCTION OF THE CREST ROAD CROSSING THE CONTRACTOR SHALL PROVIDE TRAFFIC CONTROL SIGNACE TO ALLOW ONE LANE OF CREST ROAD i0 BE OPEN AT ALL IMES. 2. ALL EXISTING TREES IN THE R,OW. WAS FENCING TO BE REMOVED AND REPLACED AS REWIRED 5 AUL URSnNG IRRE TEN LIMITS AND SPRINKLER HEADS To BE REMOVED AMID RELOCATED AS REQUIRED AS SHOWN ON PLAN OR AT THE DIRECTION UP EDT PROPERTY OWNER (JOE FUJCH>AO). A. TREES N CONELCT WITH CONSTRUCTION ON PRIVATE PROPERTY AT FAST END OF CULVERTS TO BE REMOVED AND RELOCATED AT THE DIRECTION OF THE PROPERTY OWNER at BOUCHARD). S LIMTS OF DISTURBANCE TO WETUNOS AND PRIVATE PROPERTY SNLLL NOT EXTEND PAST DELINEATION SHOWN ON THIS PLAN am Ta_6,. b=4" 21 c=2" 6, OISNRBED AREAS TO BE SODDED/SEEDED MMENATELY FgLOMNG CONSTRUCTION PER Cltt OF FORT COLLINS STANDARD SPECIFICATIONS. I. CONTRACTION TO VERIFY FUNDING UTILITIES (HORIZONTALLY A, VFRIXTELY) AT TIME OF CONSTRICTION. B. EXISTING GAS ONE TO BE POTWLED A MINIMUM OF 15 DAYS PRIOR TO CONSTRUCTION TO DETERMINE LOWERNG REOINREMENn 9. CONTRACTOR i0 COORDINATES WED.WDS MOUGAMN AS SHOWN WITH CFO OF FORT COLONS DEPARTMENT OF NATURAL RESOURCES PROR TO CONSTRUCTION I0. EXISTING CURB BE G TITER TO BE REMOVED TO JOINT LINES. IXISING ASPHALT i0 BE $ MV TO MWMIM OF 5CLFM Of AREA TO BE DISTURBED. ASPHALT REPLACEMENT TO SE FUEL DEPTH AND N CONfgtWNCE WITH APPROVED PAVEMENT DESIGN FORT CREST READ. II, COMIRACIOR TO COPidNATE CONSTRIK110N WTM LIGHT k POWER It PSCO AT LEAST AS HOURS PROR TO CWSINUCTRAN ONlIp{ W/ tiva® IRua wmuuee SILT FENM NBTALLATgN (IMAGE CAMINO a BETxwc BOB WIMA mm a°w •, -v nem FALL °�` .,� •I MAMA,..,. � •MAMA+ (REINFORCEMENT NOT SHOWN) WI �T �FVOT v° / R A low M, t�T N EWS GENERAL 1. OTHER SI vULL O 6 THIN Ew .l -O ON T� 9LOF DN N .'=vra T SL C MERT 2. TO^ C U CVEO CN yOEWALN. SEE O� ] I O _ 1 EXPOSED STEEL SHALE BE GALVANIZED IN ACCORDANCE ART AAESBATO U TS ME cT TO TOP ULAN ARE RASE 5. 0.FAWIRLEMEHTIN WAULLS AND SASE SHALL BE ) FROA ME SIDE EIRC¢D TO EARTH. EINCRC T IN TOP SLABB SEOUL DE /2 GFY _MAMA. . TRASH FACE GI "^ 1 OCTAL ON WET 7 .A.. E SPIRIT)w. 2 Of DX-MUJ / h I I 1 , EXISIM6 ,-Ia ¢l5' MxE EXISTWG Cp1CNERE WARN FLOWIINE SOEYN% CAUSE `^ cGEREcr To EXISTING ITS BE WEBWA'm Ain T RFNMFD SEE EETy k `Wr .Vc. SECTION D-y OR SH 0- 'MirGIIL CLEANEEC! . OY� / 50b 53 W. 2 M $) .tX AGO LE. EACH WIN A. ERISnNL AL vy INS. OUT- SOAR 62 AT�� vX� EXETMG DENT TO RE L MIAT.FND FIpWIIE �1 Q AND REAV.ED RER,•GtD MAMA m MIN X' AIWOSED 12.15 If A ]ON PrC MAMA CONE: soEWA1X NLYiRD (aaxorr AT 1MWAs Wait roTRE WOE - q IT J' i RoRKCTII OM cTO EHGEEfi OR OWL W AT RAMp� MOO _. P C. UNDER READ (1 I 1 ` 5040-y� t E W sPRIN LER HFIO TO BE No M D �V I °j Is. r LDESTRS CONCRETE sTRKTVRE -UTVJ I I • fE414 CAP AM aSWKe •' - D DI (SEE DELML) ,• �" FRIEND FRED CONCRETE F+s BOUNDARY sii )M"Elms IEAd DO I A,Kra A w PHaP. REASH RACE •. �,. r __I _ MAMA � . ACWO6(SEE CfTM) • ,�j// MAMA - - BRs. 2 Nl UNCF c F J SET0 wsnRYNC AfMBK SET E DING A — BE 9 __ _ -- M FOLLOW EARN Of MTLRB']ICE. TER) MAMA _ `...t _ DNA TUFT M Rv AW I nr.1 A �° A BY"k. _ wea�aVCe SEE 9i1 AXI 2 w 2'F p FX srN0 1r SEQCM B-B MAMA TEE PE R&ON EXISTING 11flLW45 MAMA 1191pCRY� WETLANDS MITIGATION I. NETEARos TC wNAcc I mw .+r-�uroaleN�uc '. �wranmcrEXuvnnaN"EAT it FAM, 6' e '¢ y CFNTGLWIE CF CREST i An 2 2' 2722' Elms' 50' F.E.S. _ 9. z]' IA n` `re+ AIGY REMFWCFMFM. LlTK M6 SI<ET) CONOIlTE ODEWALK CULVISARIT FCR VEPTIM L CIJI CKETTER AND SDEWALK NTc o-= Our, WIN, NO - v PMA WAR urt4 PoINV '. i ME at MWIN ALWAAL ,&DRAFN O av! ■ ®D!q Ar qp- RCP BPEU' IzL BE BEDDM DETAIL FEE 91 NINIMPKID IF BOOM BABBITT RIPRAP PLACEMENT DETAIL NN NLz Nr.s No. ReNsions By Date NORTHERN ENGINEERING SERVICES PFoject:951 420 SOUTH HOWES SUITE 202. Ff. COLLIKS, COIbRADO 80521 SSO- CALE. 1ESIGNER : DM OF L (970) 221-4158 It DRAFTSMAN: CADI =H X EXIT 4 w ' ENSING XM,ER M P i NOAT1.1 ORAPHO 9CA&E bi z0 20 w AT F.HI 1 1 SCALE f_M• MAMA � �1 II I 1 1 IfJY 60.0 L.F, 46" R.C.P. CL III 0 0.62% SECTION A —A (EBT NOT FOR SECTION FLI ME SNER NO, 2 OF 2 LEGAEM EXISNK STORY SEWER TWO CBEU 9A4116]l0l LARIMER COUNTY g-=-== EXISTING STORM DRAINAGE INLET UTILITY PLAN APPROVAL Mrsoconeop PROPOSED STORM DRAINAGE INLET APINORETI: FORT COONS - LDVELAND WATER DISTRICT BAR SOUTH FORT DOWNS SANITATION DISTRICT UTILITY PLAN APPROVAL A4RO.En PROPERTY OWNER WAR,, TI ULITY PLAN APPROVAL NR: 4• MAMA •C APPNXm. wRwED: ARR.ERT P.JM NR ,E y�W/ P^APRt30 {� IF COVENTRY SUBDIVISION FILING NO. 1 W ---'=FINAL 4CREST ROAD CROSSING Ml N IIIIR OF 6 FORT CCWM-LOYEIMD WATER USTRICT MINTER MAIN AM AT TIME OF CONs1MICLINE L� TAN. FRREDDDETTA VERIFIGIN.W MWREU. BEST EXISTING CONTOUR v PROPOSED CONTOUR ��•�-� LIMITS OF DISTURBANCE CITY OF FORT COLRNS, COLORADO UTILITY PLAN APPROVAL MPRNID' DIRECTOR ME vWNIteIRc BA c'RECRED er BARARA BOAns FAR CHECKED BE. THE um MAJOR IIMY INR uRCBTp WE EVANS AND WLINATNN NR , Sheet 2