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HomeMy WebLinkAbout75 Development Permit 99-305 Sigma Alpha EpsilonDrainage Re port FOR SIGMA ALPHA EPSILON FRATERNITY HOUSE VICINITY MAP NTS MAY, 1999 Prepared By: Mcaure Engineering, Inc. 1722 Broadmoor Drive, Su i te 210 Bryan, Texas 77802 (409) 776-6700 Drainage Report FOR SIGMA ALPHA EPSILON FRATERNITY HOUSE VICINITY MAP NTS MAY, 1999 Prepared By: McClure Engineering, Inc. 1722 Broad moor Drive, Suite 210 Bryan, Texas 77802 ( 409) 776-6700 CERTIFICATION I, Joel J. Mitchell, Registered Professional Engineer No . 80649, State of Texas, certify that this report for the drainage design for the SIGMA ALPHA EPSILON FRATERNITY HOUSE, was prepared by me in accordance with the provisions of the City of College Station Drainage Policy and Design Standards for the owners thereof STORM DRAINAGE REPORT I:AE FRATERNITY HOUSE Page INTRODUCTION TABLE OF CONTENTS SIGMA ALPHA EPSILON (:EAE) FRATERNITY HOUSE GENERAL LOCATION AND DESCRIPTION PRIMARY DRAINAGE BASIN DESCRIPTION DRAINAGE FACILITY DESIGN DRAINAGE DESIGN CRITERIA CONCLUSION EXHIBITS FEMA FLOOD INSURANCE RATE MAP EXCERPT DRAINAGE AREA MAP -EXISTING CONDITIONS DRAINAGE AREA MAP -PROPOSED CONDITIONS RATIONAL FORMULAS DRAINAGE AREA CALCULATIONS CULVERT ANALYSIS PROPOSED DETENTION POND ROUTING DETENTION POND ROUTING ROUTING HYDROGRAPHS STAGE-STORAGE CURVE, STAGE-DISCHARGE CURVE STORM DRAINAGE REPORT ~AE FRATERNITY HOUSE 1 1 1 2 2 3 "A" "B-1" "B-2" "C-1" "C-2" "D-1" "D-1" "D-2" "D-3" PAGE ii INTRODUCTION: STORM DRAINAGE REPORT SIGMA ALPHA EPSILON (~AE) FRATERNITY HOUSE This storm drainage report is intended to cover the necessary drainage infrastructure for the proposed development site improvements. The parameters used for design and the existing conditions of the on-site area are incorporated to show how the final drainage design will accomplish the desired drainage objectives per the City of College Station Drainage Policy and Design Standards (DPDS.) GENERAL LOCATION AND DESCRIPTION: The proposed Fraternity House is located in the western portion of College Station. The site is located on Luther Street approximately 1100' from the intersection of Luther and F.M. 2818. The site is undeveloped and is gently rolling with an average of 1.5% slopes. PRIMARY DRAINAGE BASIN DESCRIPTION: The site drains to the southern property line. There is an existing drainage swale near the southwestern property line near Luther Street. All storm water from the site flows into the White Creek Tributary B . No portion of the site is within the 100 year flood plain per the Federal Emergency Management Agency Flood Insurance Rate Maps for Brazos County, Texas and Incorporated Areas STORM DRAINAGE REPORT :EAE FRATERNITY HOUS E PAGE I effective July 2, 1992 (see Exhibit "A"). DRAINAGE FACILITY DESIGN: The site will be served by a detention pond located along the southwestern property line. This pond is designed to provide adequate detention for all phases of construction shown on the drawings. Exhibit "B-2" shows the proposed drainage areas for the pond. Drainage area "POND" flows to the Detention Pond and drainage area "BYPASS l" and "BYP ASS2" are not detained by the Detention Pond. Exhibit "B-1" shows the existing conditions drainage area. The study point for the project is the outfall device of the proposed detention facility. The outlet device for the pond is a 12" RCP with an invert elevation of 314.30'. The top of berm elevation for the pond is 317.00'. DRAINAGE DESIGN CRITERIA: All drainage design is in accordance with the City DPDS. The design rainstorm is the 10 year event. Flow calculations for all drainage areas are based on the Rational Method. The storage volume required for the detention facility is based on a triangular hydrograph (base= 3* Tc) and peak flows computed using the rational method. The required volume shall be determined by the Storage-Routing Analysis . The proposed detention pond routings shown in Exhibit "D-1" and "D-2" demonstrate how the pond will function. Exhibit "D-3" shows a stage storage and stage discharge curve for the pond. The following summary table shows the peak flow for the Pre-development events and the peak flows for the Post-development events. STORM DRAINAGE REPORT :EAE FRAT ERNITY HO USE PAGE2 Study Point -Pond Outfall Pre-Development Post-Development Pond Surface Elev . Q5 27 cfs 26 cfs 316.00 QIO 31 cfs 29 cfs 316.00 Q25 35 cfs 33 cfs 316.10 Q50 40 cfs 38 cfs 316.20 QJOO 45 cfs 42 cfs 316.30 Top of Berm= 317.00' CONCLUSION: The Post-development peak discharge does not exceed the Pre-development peak discharge for the 5, 10, 25, 50 and 100 year event. The detention pond discharges into an open channel at the property line. The drainage design for this site meets the requirements as stated in the City of College Station Drainage Policy and Design Standards. STORM DRAINAGE REPORT ~AE FRATERNITY HOUSE PAGE3 ZONE X Z O NE A ZONE X Brazo ounty Unincorporated Are 481195 Scale: 1" -500' ity of olleg 4800 I EXHIBIT A Flood Insurance Rate Map Excerpt Brazos County, Texas and Incorporated Areas Map Numbers: 48041C0181C 48041 C0182C Effective Date: July 2, 1992 Culvert#A Culvert Description 18" RCP ENTRANCE CULVERT c Iv u ert Design Crfter1a Circular Pipe No. Dia. lft.l Pi pes 1.50 1 Culvert Analysls Calculations Total Flow per Critical Design Flow Pipe Depth(ft.) Storm (Cfs) (cfsl de 5 3.70 3.70 0.80 10 4 .20 4 .20 0.80 25 4.80 4 .80 0.85 50 5.40 5.40 0.85 100 6.10 6 .10 0.95 ELhi = Hw i + Eli ho = TW or (de + 0 )/2 (Whicheve r is Greater) n 0.014 Nonna I Depth (ft.) 0 .78 0.84 0.92 1.00 1.09 EXHIBITC-2 CULVERT ANALYSIS SAE FRATERNITY HOUSE ELh l ~ _..;::: Top of Road ELho lHWI ~";---------~~ --'------t-____ ~~ ELI_.!' Proposed Culvert ~ - - - -"".' '--__ ELo Outfall Channel Design Crfter1a Invert Outlet Culvert Top Lt. Side Rt. Side Bottom Elev. (Eli) Elev. (Elo) Length Slope of Slope Slope Slope W idth n (fl) (ft.) (ft.) (ft/ft) Road ke I (ft/ft) (?:1) (?:1) (ft.) 312 .32 312 .07 50 .00 0.0050 315 .50 0.50 I 0.0150 4 .00 4 .00 4.00 0.060 HEADWATER CALCULATIONS Control Type Outlet INLET CONTROL HWi/D HWi ELh l 0.82 1.23 313 .55 0 .85 1.27 313 .59 0.88 1.32 313 .64 0.92 1.38 313 .70 0.97 1.45 313 .77 H = l 1+ke+((29"(n'2)"L)IRA1 .33Jr((v"2)/2g ) ELho = ELo + H + ho OUTLET CONTROL TW de Ide+ Dl/2 ho 0 .43 0.80 1.15 1.15 0 .46 0.80 1.15 1.15 0.50 0.85 1.18 1.18 0.54 0 .85 1.18 1.18 0.57 0.95 1.23 1.23 HW of H ELho Elev. Control 0 .17 313 .39 313 .55 Inlet 0.22 313 .44 313.59 Inlet 0.29 313 .54 313 .64 Inlet 0.37 313 .61 313 .70 Inlet 0.47 313 .77 313 .77 Inlet Velocity (fps) 3.98 4 .10 4 .22 4 .33 4 .42 Freeboard (ft.) 1.95 1.91 1.86 1.80 1.73 5/14/99 9909cu la .xls Exh ibitC-2 Culvert#B Culvert Description 27" RCP CULVERT ALONG DRIVEWAY c ulvert Design c rlterla Circular Pipe No. Dia . Cft .l Pioes 2 .25 1 Culvert Analvsls Calculatlons Total Flow per Critical Design Flow Pipe Depth(ft.) Storm (Cfs) (cfsl de 5 15 .60 15.60 1.35 10 17 .60 17.60 1.45 25 20 .10 20 .1 0 1.55 50 22 .80 22 .80 1.65 100 25 .60 25 .60 1.75 Elhi = Hwi + Eli ho= TW or (de+ 0)12 (Whichewr is Greater) n 0.014 Normal Depth (ft.) 1.47 1.61 1.82 2 .25 2.25 EXHIBIT C-2 CULVERT ANALYSIS SAE FRATERNITY HOUSE ELhi ~ ,..;=: Top of Road ELho 1HWI c.-.;---------~~ J--~-----~~ Eli Proposed Culvert ~ - - - --'-___ ELo 0 tf II Ch u a anne I 0 I Crlt rl 8SIQO e a Invert Outlet Culvert Top Lt. Side Rt. Side Bottom Elev. (Eli) Elev. (ELo) Length Slope of Slope Slope Slope Width n (ft.) (ft.) (ft.) (ft/ft) Road ke I (ft/ft) (?:1) (?:1) (ft.) 311 .74 311.48 52.00 0.0050 315 .87 0.50 I 0.0150 4 .00 4.00 4.00 0.060 HEADWATER CALCULATIONS Control Type Outlet INLET CONTROL HWi/D HWi ELhi 0.94 2.11 313.85 0.99 2.2 3 313 .97 1.07 2.41 314 .15 1.16 2.62 314.36 1.28 2.87 314 .61 H = [1 +ke+((29"(n'2)"LYR'1.33)]"((v"2)12g) Elho = Elo + H + ho OUTLET CONTROL TW de (de+ D)/2 ho 0.92 1.35 1.80 1.80 0.97 1.45 1.85 1.85 1.04 1.55 1.90 1.90 1.11 1.65 1.95 1.95 1.17 1.75 2.00 2.00 HW of H ELho Elev. Control 0.51 313 .7 9 313 .85 Inlet 0.65 313 .9 8 313 .98 Outlet 0 .85 314 .23 314 .23 Outlet 1.09 314 .52 314 .52 Ou11et 1.38 314 .86 314.86 Outlet Velocity lfos) 5.65 6 .50 6 .88 7.30 7 .72 Freeboard lft.l 2.02 1.89 1.64 1.35 1.01 5/14/99 9909culb.xls ExhibitC-2 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING SAE FRA TERN ITV HOUSE D.A.# D.A. # Pond Routino EVENT= 5 D.A.# 'II: c .r; c g Q. w l! c c ~ z 2 32 0 Oi iii + .., .. .,, ::!: c + + .,, lU lU .,, c + 32 c c > Q. >. 0 8 VJ :c a 0 .!! >. :r Q. c N Q. w Ill Qp 12.6 15.6 Tc 7.9 14.0 inc 1.0 Time cfs cfs cfs cfs cfs cfs ft cfs 0.0 0.0 0.0 1.59 0.00 0.00 0.00 314.3 0.0 1.0 1.6 1.6 4.78 0.17 1.59 0.71 314.4 1.1 2.0 3.2 3.2 7.96 0.53 4.95 2.21 314.7 2.2 3.0 4.8 4.8 11.15 1.05 8.49 3.72 315.0 3.3 4.0 6.4 6.4 14.34 4.63 12.20 3.79 315.0 4.5 5.0 8.0 8.0 17.52 11.16 18.97 3.90 315.1 5.6 6.0 9.6 9.6 20.71 20.54 28.68 4.07 315.2 6.7 7.0 11.1 11.1 23.70 32.66 41.24 4.29 315.3 7.8 8.0 12.5 12.5 24.30 47.25 56.36 4.56 315.4 8.9 9.0 11.8 11.8 22.71 61.91 71.55 4.82 315.5 10.0 10.0 11.0 11.0 21.12 74.52 84.62 5.05 315.6 11.1 11.0 10.2 10.2 19.52 85.15 95.63 5.24 315.7 12.2 12.0 9.4 9.4 17.93 93.88 104.68 5.40 315.8 13.4 13.0 8.6 8.6 16.34 100.76 111.81 5.52 315.9 14.5 14.0 7.8 7.8 14.74 105.87 117.10 5.61 315.9 15.6 15.0 7.0 7.0 13.15 109.26 120.61 5.68 316.0 15.0 16.0 6.2 6.2 11.56 111.00 122.41 5.71 316.0 14.5 17.0 5.4 5.4 9.97 111.14 122.56 5.71 316.0 13.9 18.0 4.6 4.6 8.37 109.73 121.10 5.68 316.0 13.4 19.0 3.8 3.8 6.78 106.84 118.11 5.63 315.9 12.8 20.0 3.0 3.0 5.19 102.51 113.62 5.55 315.9 12.3 21.0 2.2 2.2 3.59 96.80 107.70 5.45 315.8 11.7 22.0 1.4 1.4 2.00 89.74 100.39 5.32 315.8 11.1 23.0 0.6 0.6 0.60 81.40 91.75 5.17 315.7 10.6 24.0 0.0 0.0 0.00 72.00 82.00 5.00 315.6 10.0 25.0 0.0 0.0 0.00 62.34 72.00 4.83 315.5 9.5 26.0 0.0 0.0 0.00 53.02 62.34 4.66 315.5 8.9 27.0 0.0 0.0 0.00 44.03 53.02 4.50 315.4 8.4 26.0 0.0 0.0 0.00 35.35 44.03 4.34 315.3 7.8 29.0 0.0 0.0 0.00 26.97 35.35 4.19 315.2 7.2 30.0 0.0 0.0 0.00 16.68 26.97 4.04 315.2 6.7 31.0 0.0 0.0 0.00 11.08 16.66 3.90 315.1 6.1 32.0 0.0 0.0 0.00 3.55 11.06 3.77 315.0 5.6 33.0 0.0 0.0 0.00 0.36 3.55 1.56 314.6 5.0 34.0 0.0 0.0 0.00 0.04 0.38 0.17 314.3 4.5 35.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 3.9 36.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 3.4 37.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 2.8 38.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 2.2 39.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 1.7 40.0 0.0 0.0 0.00 0.04 0.04 0.00 314.3 1.1 PEAK FLOWS 13 13 6 316.0 16 0.00 indicates inital condition D.A.# c w N VJ .. ...J ~ .. lU ~o Q. >. e g: Ill 8.6 7.9 cfs cfs 0.0 0.00 1.1 2.92 2.2 6.62 3.3 10.33 4.4 12.60 5.5 14.93 6.6 17.30 7.6 19.72 8.5 21.96 8.0 22.79 7.4 23.58 6.9 24.34 6.3 25.07 5.8 25.76 5.2 26.42 4.7 25.39 4.1 24.32 3.6 23.22 3.0 22.09 2.5 20.94 1.9 19.76 1.4 18.55 0.9 17.32 0.3 16.07 0.0 15.03 0.0 14.30 0.0 13.58 0.0 12.66 0.0 12.15 0.0 11.44 0.0 10.74 0.0 10.04 0.0 9.35 0.0 6.61 0.0 4.64 0.0 3.91 0.0 3.36 0.0 2.80 0.0 2.24 0.0 1.69 0.0 1.13 9 26 D.A.# )( w 27.5 14.0 cfs 0.0 2.0 3.9 5.9 7.8 9.8 11.8 13.7 15.7 17.7 19.6 21.6 23.5 25.5 27.5 26.5 25.5 24.6 23.6 22.6 21.6 20.6 19.6 18.7 17.7 16.7 15.7 14.7 13.8 12.8 11.8 10.8 9.6 8.9 7.9 6.9 5.9 4.9 4.0 3.0 2.0 27 9909--0ra.xls Exhibit D-1 C> ...J :!!:: < ..... ..... !!? e~ cfs 0.00 1.96 3.92 5.89 7.85 9.81 11.77 13.73 15.69 17.66 19.62 21.58 23.54 25.50 27.47 26.52 25.53 24.55 23.57 22.59 21.61 20.63 19.65 18.67 17.69 16.71 15.73 14.74 13.76 12.78 11.60 10.62 9.64 6.86 7.88 6.90 5.92 4.94 3.95 2.97 1.99 27 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING SAE FRATERNITY HOUSE D.A.# D.A.# Pond Routino EVEN Tc 10 D.A.# 'II: c .r. 0 g Q. w .. c ~ z § !! 0 ..... .. iii + + ~ .. "C ::!: c + "C .. .. "C c + !! c c > Q. >. 0 8 Cl) Cl) ii 0 ..!! >. :i: Q. c "' "' Q. w ID Qp 14.1 17.6 Tc 7.9 14.0 inc 1.0 Time cfs cfs cfs cfs cfs cfs ft cfs 0.0 0.0 0.0 1.78 0.00 0.00 0.00 314.3 0.0 1.0 1.8 1.8 5.35 0.19 1.78 0.80 314.4 1.3 2.0 3.6 3.6 8.92 0.59 5.54 2.47 314.8 2.5 3.0 5.3 5.3 12.48 2.03 9.51 3.74 315.0 3.8 4.0 7.1 7.1 16.05 6.86 14.51 3.83 315.1 5.0 5.0 8.9 8.9 19.61 14.97 22.91 3.97 315.1 6.3 6.0 10.7 10.7 23.18 26.23 34.58 4.18 315.2 7.5 7.0 12.5 12.5 26.53 40.54 49.41 4.43 315.3 8.8 8.0 14.0 14.0 27.20 57.59 67.07 4.74 315.5 10.0 9.0 13.2 13.2 25.42 74.69 84.79 5.05 315.7 11.3 10.0 12.3 12.3 23.64 89.47 100.11 5.32 315.8 12.5 11.0 11.4 11.4 21.85 102.02 113.11 5.55 315.9 13.8 12.0 10.5 10.5 20.07 112.41 123.87 5.73 316.0 15.0 13.0 9.6 9.6 18.29 120.65 132.48 5.91 316.0 16.3 14.0 8.7 8.7 16.51 126.83 138.94 6.06 316.0 17.6 15.0 7.8 7.8 14.72 131.03 143.33 6.15 316.0 17.0 16.0 6.9 6.9 12.94 133.34 145.75 6.21 316.0 16.3 17.0 6.0 6.0 11.16 133.84 146.28 6.22 316.0 15.7 18.0 5.1 5.1 9.37 132.62 145.00 6.19 316.0 15.1 19.0 4.2 4.2 7.59 129.74 141.99 6.12 316.0 14.4 20.0 3.3 3.3 5.81 125.29 137.33 6.02 316.0 13.8 21.0 2.5 2.5 4.02 119.33 131.10 5.88 316.0 13.2 22.0 1.6 1.6 2.24 111.91 123.35 5.72 316.0 12.6 23.0 0.7 0.7 0.67 103.02 114.15 5.56 315.9 11.9 24.0 0.0 0.0 0.00 92.93 103.69 5.38 315.8 11.3 25.0 0.0 0.0 0.00 82.55 92.93 5.19 315.7 10.7 26.0 0.0 0.0 0.00 72.52 82.55 5.01 315.6 10.1 27.0 0.0 0.0 0.00 62.85 72.52 4.84 315.5 9.4 28.0 0.0 0.0 0.00 53.51 62.85 4.67 315.5 8.8 29.0 0.0 0.0 0.00 44.50 53.51 4.51 315.4 8.2 30.0 0.0 0.0 0.00 35.80 44.50 4.35 315.3 7.5 31.0 0.0 0.0 0.00 27.41 35.80 4.20 315.2 6.9 32.0 0.0 0.0 0.00 19.31 27.41 4.05 315.2 6.3 33.0 0.0 0.0 0.00 11.49 19.31 3.91 315.1 5.7 34.0 0.0 0.0 0.00 3.94 11.49 3.77 315.0 5.0 35.0 0.0 0.0 0.00 0.42 3.94 1.76 314.6 4.4 36.0 0.0 0.0 0.00 0.05 0.42 0.19 314.3 3.8 37.0 0.0 0.0 0.00 0.05 0.05 0.00 314.3 3.2 38.0 0.0 0.0 0.00 0.05 0.05 0.00 314.3 2.5 39.0 0.0 0.0 0.00 0.05 0.05 0.00 314.3 1.9 40.0 0.0 0.0 0.00 0.05 0.05 0.00 314.3 1.3 PEAK FLOWS 14 14 6 316.0 18 0.00 indicates inital condition D.A.# 0 w "' Cl) .. ..J ~ .. .. ~~ Q. >. ID 9.6 7.9 cfs cfs 0.0 0.00 1.2 3.27 2.4 7.43 3.7 11.17 4.9 13.73 6.1 16.35 7.3 19.03 8.6 21.77 9.5 24.29 8.9 25.24 8.3 26.15 7.7 27.02 7.1 27.85 6.5 28.68 5.8 29.46 5.2 28.34 4.6 27.16 4.0 25.93 3.4 24.66 2.8 23.36 2.2 22.02 1.6 20.64 1.0 19.24 0.3 17.85 0.0 16.69 0.0 15.87 0.0 15.06 0.0 14.26 0.0 13.47 0.0 12.68 0.0 11.89 0.0 11.11 0.0 10.34 0.0 9.57 0.0 8.81 0.0 6.17 0.0 3.97 0.0 3.16 0.0 2.53 0.0 1.90 0.0 1.27 10 29 D.A.# )( w 31.0 14.0 els 0.0 2.2 4.4 6.6 8.8 11.1 13.3 15.5 17.7 19.9 22.1 24.3 26.5 28.7 31.0 29.9 28.8 27.7 26.6 25.5 24.4 23.3 22.2 21.0 19.9 18.8 17.7 16.6 15.5 14.4 13.3 12.2 11.1 10.0 8.9 7.8 6.7 5.6 4.5 3.4 2.2 31 9909-dra.xls Exhibit 0-1 0 ..J ~ c( I-I-~ ~~ els 0.00 2.21 4.42 6.63 8.85 11.06 13.27 15.48 17.69 19.90 22.12 24.33 26.54 28.75 30.96 29.89 28.78 27.68 26.57 25.47 24.36 23.26 22.15 21.04 19.94 18.83 17.73 16.62 15.52 14.41 13.30 12.20 11.09 9.99 8.88 7.78 6.67 5.56 4.46 3.35 2.25 31 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING SAE FRATERNITY HOUSE D .A.# D.A.# Pond RoutinQ EVENT= 25 D.A.# 'II: c .r. c 7 Q. w f! z c c Oi :E 0 ~ iii + 2 ,., + ., ,, == c ... ,, .. [ ,, c + :E c + c > >-0 8 I/) lC & 0 .!! >-J: 0. c N 0. w ID Qp 16 .1 20.1 Tc 7.9 14.0 i nc 1.0 nme cfs cfs cfs cfs cfs cfs ft cfs 0 .0 0 .0 0 .0 2 .03 0 .00 0 .00 0 .00 31 4 .3 0 .0 1.0 2 .0 2 .0 6 .10 0.22 2.03 0 .91 31 4 .5 1.4 2 .0 4 .1 4 .1 10.17 0 .68 6 .32 2 .82 314 .8 2.9 3 .0 6 .1 6 .1 14 .24 3.32 10.85 3 .76 3 15.0 4 .3 4 .0 8.1 8 .1 18 .31 9 .8 1 17.56 3 .88 31 5 .1 5.7 5 .0 10.2 10 .2 22 .38 19 .99 2 8 .12 4 .06 31 5 .2 7 .2 6 .0 12 .2 12 .2 26.45 33 .75 4 2 .37 4 .31 31 5.3 8 .6 7.0 14 .2 14 .2 30.27 50 .95 60.19 4 .62 315.4 10.0 8 .0 16 .0 16 .0 31 .04 71 .24 81 .2 1 4 .99 315.6 11.5 9.0 15 .0 15 .0 29.00 91 .56 102.27 5 .36 315.8 12.9 10 .0 14 .0 14 .0 26 .97 109.21 120 .56 5 .68 3 16 .0 14 .3 11 .0 13.0 13.0 24 .93 124.19 136 .18 6 .00 316.0 15.8 12 .0 12.0 12 .0 22.90 136.56 149.12 6 .28 316.1 17.2 13.0 10.9 10.9 20 .87 146.44 159.46 6 .51 316 .1 18.7 14 .0 9.9 9 .9 18.83 153.94 167.30 6 .68 316.1 20.1 15 .0 8 .9 8 .9 16.80 159 .16 172.77 6 .80 316.1 19 .4 16 .0 7 .9 7.9 14.76 162.21 175.96 6 .87 316.1 18.7 17 .0 6 .9 6 .9 12.73 163.18 176.97 6 .90 316.1 18 .0 18 .0 5.9 5 .9 10.69 162.16 175.91 6 .87 316.1 17 .2 19.0 4.8 4 .8 8 .66 159.24 172.85 6 .81 316.1 16 .5 20.0 3.8 3 .8 6 .63 154 .51 167.90 6 .70 316 .1 15.8 2 1.0 2 .8 2.8 4 .59 148.04 161.13 6 .55 3 16 .1 15.1 22.0 1.8 1.8 2.56 139.91 152.63 6 .36 316 .1 14.4 23.0 0 .8 0 .8 0.77 130.20 142.47 6 .13 316.0 13.7 24 .0 0 .0 0 .0 0.00 119 .21 130.97 5 .88 316 .0 12.9 25 .0 0 .0 0 .0 0 .00 107 .91 119.21 5.65 315.9 12.2 26 .0 0 .0 0 .0 0 .00 97 .00 107.91 5.45 315.8 11 .5 27 .0 0.0 0 .0 0 .00 86 .47 97 .00 5.26 3 15.8 10.8 2 8 .0 0 .0 0 .0 0 .00 76.31 86 .47 5.08 3 15.7 10 .1 2 9 .0 0.0 0.0 0 .00 66.50 76 .31 4.90 3 15 .6 9 .3 30.0 0 .0 0 .0 0 .00 57.04 66 .50 4 .73 3 15 .5 8 .6 31 .0 0 .0 0.0 0 .00 47.90 57 .04 4 .57 3 15.4 7.9 32.0 0 .0 0 .0 0 .00 39 .08 47 .90 4 .41 3 15.3 7.2 33.0 0 .0 0 .0 0 .00 30.58 39 .08 4 .2 5 315.3 6 .5 34 .0 0 .0 0 .0 0 .00 22.37 30 .58 4 .11 31 5 .2 5 .8 35 .0 0.0 0 .0 0.00 14.44 22 .37 3 .96 3 15 .1 5.0 36 .0 0 .0 0 .0 0 .00 6 .79 14 .44 3 .82 31 5 .1 4 .3 37.0 0 .0 0 .0 0.00 0 .73 6 .79 3 .03 3 14 .9 3 .6 38 .0 0.0 0 .0 0.00 0 .08 0 .73 0 .32 3 14.4 2 .9 39.0 0.0 0 .0 0.00 0 .08 0 .08 0 .00 314 .3 2 .2 40.0 0 .0 0 .0 0 .00 0 .08 0 .08 0 .00 314 .3 1.5 PEAK FLOWS 16 16 7 316.1 20 0.00 indicates initaJ condition D.A. # c w N I/) .. ...J ~ .. [ ""o 5 a:: >-ID ..... 0. 11 .0 7.9 cfs cfs 0 .0 0 .00 1.4 3 .74 2.8 8 .48 4.2 12.25 5.6 15.20 7 .0 18 .21 8 .4 21 .2 9 9 .8 24 .43 10.9 27 .32 10 .2 28 .43 9.5 29.49 8.8 30 .54 8.1 31 .57 7 .4 32.53 6 .7 33.44 6.0 32.17 5 .3 30.83 4 .6 29 .44 3.9 28 .00 3 .2 26 .52 2.5 24 .99 1.8 23 .43 1.1 21 .82 0 .4 20.19 0 .0 18.82 0 .0 17.87 0 .0 16.96 0 .0 16.05 0 .0 15.15 0 .0 14 .2 5 0 .0 13 .36 0 .0 12 .48 0 .0 11.60 0 .0 10 .73 0 .0 9 .87 0.0 9 .01 0 .0 8 .15 0.0 6 .64 0.0 3 .22 0 .0 2 .17 0.0 1.46 11 33 D.A. # )( w 35 .5 14.0 cfs 0.0 2.5 5 .1 7 .6 10 .1 12 .7 15 .2 17 .7 20.2 22 .8 25.3 27 .8 30.4 32 .9 35.4 34 .2 32 .9 3 1.7 30.4 29 .1 27 .9 26 .6 25 .3 24 .1 22 .8 2 1.5 20 .3 19 .0 17.8 16 .5 15 .2 14 .0 12 .7 11.4 10 .2 8 .9 7 .6 6 .4 5 .1 3 .8 2 .6 35 9909-dra.xt s Exhibit D-1 C> ...J ~ ct I- I-!!? 0 >< ..... w cfs 0.00 2 .5 3 5 .06 7 .59 10 .12 12 .65 15.18 17.7 1 20 .24 22.77 25.30 27.83 30.36 32 .89 35 .42 34 .20 32 .93 31 .67 30.40 29 .1 4 27.87 26.61 25.34 24.08 22.81 2 1.55 20 .28 19 .02 17 .7 5 16 .49 15.22 13.96 12.69 11.43 10 .16 8 .90 7 .63 6 .37 5.10 3 .84 2 .57 35 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING SAE FRATERNITY HOUSE D.A. # D.A. # Pond Routing EVENT= 50 D.A.# "" c: .z: c g c.. w .. c: ~ z c: :!:! 0 ;;; 2 iii + + "O ~ .. "C :E c: .... .. "C c: + :!:! c: + c: > c.. >-0 8 :c :c 5 0 ..!! >-::r n. .E n. w Ill Qp 18.2 22.8 Tc 7.9 14.0 inc 1 .0 Time cfs cfs cfs cfs cfs cfs ft cfs 0 .0 0 .0 0 .0 2 .30 0 .00 0 .00 0 .00 314 .3 0 .0 1.0 2 .3 2 .3 6 .89 0 .25 2.30 1.03 314 .5 1.6 2 .0 4 .6 4.6 11.49 0.76 7 .14 3 .19 3 14 .9 3.2 3 .0 6 .9 6.9 16.08 4 .68 12 .25 3 .79 315 .0 4 .9 4 .0 9 .2 9.2 20.67 12.89 20.76 3 .93 315.1 6 .5 5 .0 11 .5 11.5 25 .27 25 .25 33 .56 4 .16 315.2 8 .1 6 .0 13 .8 13.8 29 .86 41 .61 50.52 4.45 315.4 9 .7 7.0 16.1 16.1 34 .18 61 .83 71.47 4 .82 315.5 11 .4 8.0 18.1 18.1 35 .05 85.52 96.01 5 .25 315.7 13 .0 9 .0 16.9 16 .9 32.75 109.21 120.56 5 .68 316.0 14.6 10.0 15.8 15.8 30 .45 129.72 141 .96 6 .12 316 .0 16.2 11 .0 14 .7 14 .7 28.16 147.12 160.17 6 .53 316.1 17.9 12 .0 13 .5 13.5 25.86 161 .56 175.27 6 .86 316 .1 19.5 13.0 12.4 12.4 23.56 173 .16 187 .41 7 .13 316 .1 21.1 14.0 11 .2 11.2 21 .26 182.05 196.72 7 .33 316 .2 22.7 15.0 10.1 10 .1 18 .97 188 .36 203.32 7.48 316.2 22.0 16.0 8 .9 8.9 16 .67 192 .19 207.33 7 .57 316.2 21 .1 17.0 7 .8 7.8 14 .37 193 .66 208.86 7 .60 316.2 20.3 18.0 6 .6 6 .6 12.08 192.86 208.03 7 .58 316.2 19.5 19 .0 5 .5 5.5 9.78 189.91 204.94 7 .51 316.2 18.7 20.0 4 .3 4 .3 7.48 184.89 199.69 7 .40 316.2 17 .9 21 .0 3 .2 3 .2 5.18 177.90 192.37 7 .24 316.2 17 .1 22.0 2 .0 2 .0 2 .89 169.02 183.08 7 .03 316.1 16 .3 23.0 0 .9 0 .9 0 .87 158.33 171 .90 6 .78 316.1 15 .5 24 .0 0 .0 0 .0 0 .00 146.19 159.20 6 .50 316 .1 14 .6 25 .0 0.0 0 .0 0 .00 133 .76 146.19 6 .22 316.0 13 .8 26 .0 0 .0 0 .0 0 .00 121 .88 133.76 5 .94 316.0 13 .0 27 .0 0 .0 0 .0 0.00 110.48 121 .88 5 .70 316 .0 12 .2 28 .0 0 .0 0 .0 0.00 99 .48 110.48 5.50 315 .9 11 .4 29.0 0 .0 0 .0 0.00 88.87 99 .48 5.31 315 .8 10.6 30.0 0 .0 0 .0 0.00 78 .62 88 .87 5 .12 315 .7 9 .8 31 .0 0 .0 0 .0 0.00 68.73 78.62 4 .94 315.6 9 .0 32.0 0 .0 0 .0 0 .00 59.19 68 .73 4 .77 31 5 .5 8.1 33.0 0 .0 0 .0 0.00 49.98 59.19 4 .60 315.4 7 .3 34 .0 0 .0 0 .0 0 .00 41 .09 49.98 4 .44 315.4 6 .5 35 .0 0 .0 0.0 0 .00 32.51 41 .09 4 .29 315.3 5 .7 36 .0 0 .0 0 .0 0 .00 24.24 32.51 4 .14 315.2 4 .9 37 .0 0.0 0.0 0 .00 16.25 24.24 4 .00 315 .1 4 .1 38 .0 0 .0 0 .0 0 .00 8.53 16 .25 3.86 315 .1 3.3 39 .0 0.0 0 .0 0 .00 1.09 8 .53 3.72 315 .0 2 .5 40.0 0.0 0 .0 0 .00 0 .12 1.09 0 .49 314.4 1.7 PEAK FLOWS 18 18 8 316.2 23 0.00 indicates inital condition D.A. # c w N (/) .. ...J ~ ., .. ~o c.. >-e &: Ill 12.4 7.9 cfs cfs 0.0 0 .00 1.6 4.23 3.1 9.59 4 .7 13.38 6 .3 16.73 7 .9 20 .16 9.4 23 .65 11 .0 27 .22 12 .3 30.50 11 .5 31.77 10 .7 33 .06 9.9 34.30 9 .1 35.47 8 .3 36.57 7 .5 37.62 6 .7 36.19 6 .0 34.68 5 .2 33.11 4 .4 31 .49 3 .6 29.82 2 .8 28 .11 2 .0 26 .35 1.2 24.54 0 .4 22 .69 0.0 21 .15 0.0 20 .05 0.0 18 .97 0.0 17.91 0 .0 16 .90 0 .0 15 .89 0 .0 14 .90 0 .0 13.91 0 .0 12 .92 0 .0 11 .94 0 .0 10.97 0 .0 10.00 0 .0 9.04 0 .0 8.08 0.0 7.13 0.0 6.18 0 .0 2.14 12 38 D.A .# )( w 40 .1 14.0 cfs 0.0 2 .9 5.7 8 .6 11 .5 14.3 17 .2 20.1 22.9 25 .8 28 .7 31 .5 34 .4 37 .2 40.1 38.7 37.3 35.9 34 .4 33.0 31 .6 30.1 28 .7 27.3 25 .8 24.4 23 .0 21 .5 . 20 .1 18 .7 17 .2 15 .8 14.4 12 .9 11 .5 10 .1 8 .6 7 .2 5.8 4 .3 2.9 40 9909-<lra .xls Exhibit 0 -1 C> ...J ~ < I- I-!!! 0 >< ,;;;. w cfs 0 .00 2 .87 5 .73 8 .60 11.46 14.33 17 .19 20 .06 22.92 25.79 28.65 31 .52 34 .38 37.25 40.11 38 .73 37 .29 35 .86 34 .43 33 .00 31 .56 30.13 28.70 27.27 25.83 24 .40 22 .97 21 .54 20 .10 18 .67 17 .24 15.80 14 .37 12 .94 11 .51 10.07 8 .64 7.21 5 .78 4 .34 2 .91 40 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING SAE FRATERNITY HOUSE D.A. # D.A. # Pond Routing EVENT= 100 D.A.# 'Ito c .c c 7 0.. w :! c ... z c :!2 0 ~ 2 .. iii + ., .. "Cl :::!: c + + "Cl .. a. "Cl c + "Cl c c > >-0 8 iii lC & 0 .!! >-J: 0. c "' 0. w m Qp 20.4 25.6 Tc 7.9 14.0 inc 1.0 Time cfs cfs cfs cfs cfs cfs ft cfs 0.0 0.0 0.0 2.58 0.00 0.00 0.00 314.3 0.0 1.0 2.6 2.6 7.73 0.28 2.58 1.15 314.S 1.8 2.0 5.2 5.2 12.89 0.86 8.01 3.58 315.0 3.7 3.0 7.7 7.7 18.04 6.12 13.74 3.81 315.0 5.5 4.0 10.3 10.3 23.20 16.18 24.16 3.99 315.1 7.3 5.0 12.9 12.9 28.35 30.85 39.37 4.26 315.3 9.2 6.0 15.S 15.S 33.51 SO.DO 59.21 4.61 315.4 11.0 7.0 18.0 18.0 38.35 73.45 83.51 5.03 315.6 12.8 8.0 20.3 20.3 39.32 100.75 111.80 5.52 315.9 14.6 9.0 19.0 19.0 36.75 127.91 140.08 6.08 316.0 16.S 10.0 17.7 17.7 34.17 151 .41 164.66 6.62 316.1 18.3 11.0 16.4 16.4 31.59 171.41 185.58 7.09 316.1 20.1 12.0 15.2 15.2 29.01 188.05 203.00 7.47 316.2 22.0 13.0 13.9 13.9 26.44 201.50 217.07 7.78 316.2 23.8 14.0 12.6 12.6 23.86 211.89 227.94 8.02 316.2 25.6 15.0 11.3 11.3 21.28 219.36 235.75 8.20 316.3 24.7 16.0 10.0 10.0 18.70 224.03 240.64 8.30 316.3 23.8 17.0 8.7 8.7 16.13 226.04 242.74 8.35 316.3 22.9 18.0 7.4 7.4 13.55 225.49 242.16 8.34 316.3 22.0 19.0 6.1 6.1 10.97 222.50 239.04 8.27 316.3 21.1 20.0 4.8 4.8 8.39 217.18 233.47 8.15 316.3 20.2 21.0 3.6 3.6 5.82 209.63 225.58 7.97 316.2 19.2 22.0 2.3 2.3 3.24 199.96 215.45 7.75 316.2 18.3 23.0 1.0 1.0 0.98 188.24 203.20 7.48 316.2 17.4 24.0 0.0 0.0 0.00 174.88 189.22 7.17 316.1 16.S 25.0 0.0 0.0 0.00 161.18 174.88 6.85 316.1 15.6 26.0 0.0 0.0 0.00 148.09 161.18 6.55 316.1 14.7 27.0 0.0 0.0 0.00 135.57 148.09 6.26 316.1 13.8 28.0 0.0 0.0 0.00 123.61 135.57 5.98 316.0 12.8 29.0 0.0 0.0 0.00 112.15 123.61 5.73 316.0 11.9 30.0 0.0 0.0 0.00 101.09 112.15 5.53 315.9 11.0 31.0 0.0 0.0 0.00 90.42 101.09 5.34 315.8 10.1 32.0 0.0 0.0 0.00 80.12 90.42 5.15 315.7 9.2 33.0 00 0.0 0.00 70.18 80.12 4.97 315.6 8.3 34.0 00 0.0 0.00 60.59 70.18 4.80 315.5 7.3 35.0 0.0 0.0 0.00 51.33 60.59 4.63 315.4 6.4 36.0 0.0 0.0 0.00 42.39 51.33 4.47 315.4 5.5 37.0 0.0 0.0 0.00 33.77 42.39 4.31 315.3 4.6 38.0 0.0 0.0 0.00 25.45 33.77 4.16 315.2 3.7 39.0 0.0 0.0 0.00 17.42 25.45 4.02 315.1 2.8 40.0 0.0 0.0 0.00 9.66 17.42 3.88 315.1 1.9 PEAK FLOWS 20 20 8 316.3 26 0.00 indicates inital condition D.A. # 0 w "' (/) .. ~g .. .. 0.. >-0 a: m ~ 0. 13.9 7.9 cfs cfs 0.0 0.00 1.8 4.75 3.5 10.77 5.3 14.60 7.1 18.38 8.8 22.24 10.6 26.19 12.4 30.21 13.8 33.92 12.9 35.42 12.0 36.91 11.1 38.32 10.2 39.65 9.3 40.91 8.5 42.10 7.6 40.50 6.7 38.81 5.8 37.06 4.9 35.25 4.0 33.38 3.2 31.46 2.3 29.49 1.4 27.46 0.5 25.39 0.0 23.67 0.0 22.44 0.0 21.22 0.0 20.01 0.0 18.82 0.0 17.65 0.0 16.54 0.0 15.43 0.0 14.33 0.0 13.23 0.0 12.15 0.0 11.06 0.0 9.99 00 8.92 0.0 7.85 0.0 6.79 0.0 5.74 14 42 D.A.# )( w 45.2 14.0 cfs 0.0 3.2 6.5 9.7 12.9 16.1 19.4 22.6 25.8 29.0 32.3 35.S 38.7 42.0 45.2 43.6 42.0 40.4 38.8 37.2 35.6 33.9 32.3 30.7 29.1 27.5 25.9 24.3 22.6 21.0 19.4 17.8 16.2 14.6 13.0 11.3 9.7 8.1 6.5 4.9 3.3 45 9909-dra.xls EJChibit D-1 Cl ..J ~ <( I-I-!!? 0 >< ~w cfs 0.00 3.23 6.45 9.68 12.91 16.14 19.36 22.59 25.82 29.05 32.27 35.50 38.73 41.95 45.18 43.62 42.00 40.39 38.78 37.16 35.55 33.94 32.32 30.71 29.10 27.48 25.87 24.26 22.64 21.03 19.41 17.80 16.19 14.57 12.96 11.35 9.73 8.12 6.51 4.89 3.28 45 SAE FRATERNITY HOUSE 5 Year Event Hydrograph 30.00 -.---------------------------------------. 25.00 - 20 .00 I I I I I I ~ ,£. 15 .00 a 10.00 5.00 - 0.00 -F-----+------+----+------+---....;:,,...-+--------1f----~-+-----~ 0.00 5.00 10.00 15 .00 20.00 Time(min.) 25 .00 30.00 35.00 40 .00 --Pond --Qn+1 --Bypass1 Bypass2 --TOTAL PROPOSED - - -TOTAL EXISTING 5/18/99 Exhibit D-2 ~ SAE FRATERN ITY HOUSE 100 Year Event Hydrograph 50.00 -------------------------------------. 45 .00 40.00 35.00 30 .00 I I I I .2. 25.00 I I a 20 .00 15.00 10.00 5.00 0 .00 .ti:::-----------+-----+------+----"'--+------l----+----~ 0 .00 5.00 10.00 15.00 20 .00 Time(min.) 25 .00 30.00 35.00 40.00 --Pond --Qn+1 --Bypass1 Bypass2 --TOTAL PROPOSED - - -TOT AL EXISTING 5/18/99 Exhibit D-2 ~ ~ a SAE FRATERNITY HOUSE 50 Year Event Hydrograph 45 .00 ~-------------------------------------. 40 .00 -- 35.00 30.00 25.00 20.00 15 .00 10.00 -- 5 .00 0 .00 ~-----+---------------------+----__.-----+-------! 0 .00 5 .00 10.00 15 .00 20 .00 Time(min.) 25 .00 30.00 35.00 40 .00 --Pond --Qn+1 --Bypass1 Bypass2 --TOTAL PROPOSED - - -TOT AL EXISTING 5/18/99 Exhibit D-2 SAE FRATERNITY HOUSE 10 Year Event Hydrograph 35.00 ---------------------------------------. 30.00 25.00 20 .00 15 .00 - 10.00 - 5.00 0.00 ~--------+------+----~---;:::,,_-+-----4----4-~--~ 0 .00 5.00 10.00 15 .00 20.00 Time(min.) 25.00 30.00 35.00 40.00 --Pond --Qn+1 --Bypass1 Bypass2 --TOTAL PROPOSED - - -TOT AL EXISTING 5/18/99 Exhibit D-2 2.500 2.000 -it! ~ -; 1.500 Cl I! 0 Ci) 1.000 0.500 SAE FRA TERN ITV HOUSE Stage-Storage Curve 0 .000.i.-~~~~1--....... ~~-----=='--~~-+-~~~~-+-~~~~-+-~~~~1--~~~--+~~~~-+-~~~~-+-~~~~ 313 314 315 316 317 318 Elevation (msl) 319 320 321 322 323 Exhibit D-3 325.000 300.000 275.000 250.000 225 .000 200.000 ~ ~ 175 .000 " Cl .. "' s:: ~ 150.000 i5 125.000 100.000 75 .000 50 .000 25 .000 0.000 313.0 314 .0 315.0 316.0 SAE FRATERNITY HOUSE Stage-Discharge Curve 317 .0 318.0 Elevation (msl) 319.0 320.0 321 .0 322.0 323.0 Exhibit D-3 ltCDl J 2 -·-·····- 3 4 5 6 7 8 9 z: 4 096932 55 4 MC CLU RE ENG R I NC ENGINEJ;~R'S CONS'l'IUJC:TION COST •:STJMATE SIGMA ALPHA EPSILON FRATERNITY SEPTEMBER 17, 1999 Dcsr.ription Unit Qty. J<:st. Unit Price DRAINAGE CONSTRUCTION 18" KCP (ASTM C-76 , CL. Ill) 1..F . 46 $28 .00 Concrete Sloped Headwall (18" Pipe) Each 2 500 .00 DRAINAGE SUBTOTAL ··-·· ... ~··-·---.. . ... WATER LINE CONSTRUCTION Remove Rlow-offand Connect to Ex . 6" Linc L.S. I $500.00 6" PVC Pipe (A WW A C-900, Cl. 200) l .. f. 442 13 .50 6" X 45° M.J . Dend Each 3 250.00 .. . ... .. " " ' ... ··-· Standard F ire Hydrant Assembly E.ach 1 1600.00 6" X l Yi" Tapped Ta: Each 1 200.00 6" X 90 ~ .. M.J. An~horing Bend Each I 215 .00 6" M.J. Gate Valve Each I 410.00 WATER 1 .• INE SUBTOTAL TOTAL ESTIMATED CONSTRUCTION COST Total Amount $1,288.00 1000.00 $2,288.00 ··- $500.00 5967 .00 750.00 1600.00 200.00 215.00 410.00 $9,642 .00 SJ 1,930.00 P .02 FOR OFFICE USE ONLY CASE NO.: ,..,00 ~06 DATE SUBMITTED: DEVELOPMENT PERMIT MINIMUM SUBMITf AL REQUIREMENTS .Ed_ $100.00 Development Permit Application Fee. ~Drainage and erosion control plan, with supporting Drainage Report two (2) copies each. Notice ofintent (N.O.L) if disturbed area is greater than 5 acres. LEGAL DESCRIPTION Lot 1A, Block One, MELROSE SUBDIVISION REPLAT APPLICANT (Primary Contact for the Project): Name SIGMA ALPHA EPSILON FRATERNITY Street Address 1300 Turkey Creek Rd. City Bryan~ TX 77801 ,·. ,• State TX Zip Code 77801 E-Mail Address -------------- Phone Number Fax Number ------------------------------ PROPERTY OWNER'S INFORMATION: Name Same Street Address ----------------~ City --------------- State Zip Code ______ E-Mail Address ------------- Phone Number Fax Number -----------------------------~ ARCHITECT OR ENGINEER'S INFORMATION: Name Michael R. McClure, P.E., R.P.L.S. Street Address 1008 Woodcreek Drive, Suite 103 City College Station State TX Zip Code 77845 E-Mail Address mcclure@tca.net Phone Number 693-3838 Fax Number 693-2554 -----------~~~~~-------------~ Application is hereby made for the following development specific site/waterway alterations: Construction of a Fraternity House in the drainage basin of White Creek Tributary B ACKNOWLEDGMENTS: 1.~M\\..e'S , ~~hereby acknowledge or affirm that: The infonnation and conclusions contained in the above plans and supporting documents comply with the current requirements of the City of College Station, Texas City Code, Chapter 13 and its associated Drainage Policy and Design Standards. As a condition of approval of this pem1it application, I agree to construct the improvements proposed in this application 1ccord t these documents and the requirements of Chapter;~ j'f~ College Station City Code. ~~ DEVELOPMENT PERMIT DPERMIT.DOC Jn4/99 I of2 t .'~~J t -.. ...... . - CERTTFICATIONS: (for proposed alterations within designated flood hazard areas.) A. I, certify that any nonresidential structure on or proposed to be on this site as part of this application is designated to prevent damage to the structure or its contents as a result of flooding from the 100 year storm. Engineer Date B. I, certify that the finished floor elevation of the lowest floor, including any basement, of any residential structure, proposed as part of this application is at or above the base flood elevation established in the latest Federal Insurance Administration Flood Hazard Study and maps, as amended . Engineer Date C. I, Michael R. Mc'Clure, P .;:certify that the alterations or development covered by this !?.Smlit shall not diminish the flood-carrying capacity of the waterway adjoining or crossing this permitted site an~®h~ions or development are consistent with requirements of the City of College Station City Code, Chap~IQotiF••••• :..r""/.,.,•t, ,, •• • \I" ,,, encroachments of fl ways and of floodway fringes. '* l \ * :. it*. ~*i:. ~··································~ ~~-:f.!::±.~~L.f!:~~~~~-~--9 }1 /e11 ~ .. Ml.9.~.~~.~.B.M~9.~~BLJ Dat~ / t,~··.'9 327 40 Q /tJJ~ fa~··~91STE~~··· ~ ~ ''"&s ........ ~,0""' '\/ONAL t;.~.,;,,­'"-'-~~-D. I, do certify that the proposed alterations do not raise the level of the 100 year flood above elevation established in the latest Federal Insurance Administration Flood Hazard Study. Engineer Date Conditions or comments as part of approval: ~~~~~~~~~~~~~~~~~~~~~~~~~~~ In accordance with Chapter 13 of the Code of Ordinances of the City of College Station, measures shall be taken to insure that debris from construction, erosion, and sedimentation shall not be deposited in city streets, or existing drainage facilities. All development shall be in accordance with the plans and specifications submitted to and approved by the City Engineer for the above named project. All of the applicable codes and ordinances of the City of College Station shall apply . DEVELOPMENT PERMIT DPERMIT.DOC Jn4199 2 of2 5/1. E: :;:;a..+~11,-1-r a~~ Project Name: _________ _ Review Date: Cj /zD /qq Rtviewcr: a Public Water Infrastructure Genera) Jl Overall utility layout sheet -showing easements (platted or by separate instrument) D If separate instrument easements are needed -do not approve until we get them recorded D TXDOT permits needed? ;1' Sealed and Signed O Engineers Estimates Linet ~ Pipe material ~ Pipe sizes (allowable .... 6,8,12,16,18 -note no 10" approved) ·ff Depth (4'+)(min,max) ,Jt. Separation distances (TNRCC) Ji, All utilities in plan & profile w/sizes and type 'Ji Private vs. Public line distinction ~ 0 Wyes not past property line (so meter can be within ROW/easement) .M 0 Max # of connections for size waterline (TNRCC) Af~O Pipe deflection (noted as~ .. degrees, radius -with begin/end curve, not atjt) j{ Grades -existing and proposed (centerline, right and left) shown in profile ,Z Full TNRCC compliance j1 Con1lids with other utilities shown $ Labels on all major items in plan & profile (crossings) yJ Siu/Location sufficient for overall City needs/masterplan D Minimiu dead-end lines /f, Lines located in PUE/ROW p Stationing on all~ and taps ~ D Valve spacing {SOO') 0 Valves -system isolation 0 Valves -at hydrant 0 Bacldlow prevcnters/ and check valves uses as necessary (@irrigation/fire sprinldcr/poolslha7.ards) 0 Blowoffs (FH ok too) @end of dead end lines 0 Air release valves at all major high points Fire Hydrants )lf Fire hydrant spacing (Coverage) ~ Yue hydrant location (relative to cwb) JZ' Fire hydrant -detail/type specified 0 Fire fiow calculations provided Service Lines j!J' Scrvioe lines -materials and size specified from main to meter JJJ D Services provided to all lots to a point beyond sidewalks on both sides of street 1 ol12 Project Name: ?fJ£' f:JeJ~ ,J.c ~~ Public Water Infrastructure{ cont.) Details R.eviewDatc: CJ/UJ/o;q Reviewer: £.{iJ2 0 Standard Details noted or included (referenced as city of CS Standard Details) 0 Details for all non-standard items (included/ok) (not on CS Std. detail sheet) 0 All MI valves and fittings 0 Thrust blocking 0 Easement width adequate 0 Embcdmcot details (specify option) 0 T~ safety if deeper than S' 0 Erosionoontrolnotcs The following items arc variances to the College Station public waterline standards: 2 ot'l2 -Public/Private Streets Qsneral ft. Overall plan layout of streets Ji' Plan and profile for all streets Project Name: _________ _ Review Date: __________ _ Reviewer:.~----------~ O If separate iDst.rumcnt casements arc needed -do not approve until we get them recorded 0 TXDOT permits needed? '/ Scaled and Signed 0 En~ Estimates Street Paving Plan AJA 0 Sidewalk locations per subdivision regs. Al.A' a Cwb inlets shown ,£!! Culvcrtslocation Jlf Storm Sewer location ~4 0 Bi.kc lane&'striping Jt Street widths ;1 Right of way/casement width Jf Radius sizes for (cwb returns, median noses, tum lanes, etc) )1 Cwb and Gutter delineated JJ't}o Street Names ;Z Plan and Profile -stationed ~ )if ft it Benchmarks refcrcoccd Centerline stationing info. (PC, Pl, PT, other angle/bearing) Cwvc info (length, tangent, radius, angle) Min. and Max. grades Radil Sidewalks 1 0 Width D Location t.J} 0 X-slopc 0 X-scction (beddin& thickness, stccl) -see details 0 Handicap ramps (location, x-slopc, long slope, landing width, sideslopes, no cwb returns on ramps) Paving Profile /f.. All proposed and existing utility conflicts shown with sizc and flowline jt Profile of existing ground (centerl.i.Dc, right and left) Jf Location of propo&ed storm sewers with size and grade JA, Top of cwb profile with grades ¢ Propo&ed paving profile Public/Private Streets(cont.) .h Details ~ 0 Sidewalk x-scction M-o Tic between sidewalk and back of cwb ( if applicable) i_ Paving x-section w/crown dimensioned JJlt 0 Handicap ramps j Cwb aod gutter Project Name: __________ _ Review Date: ----------~ Reviewer: ___________ ~ The following items arc variances to the College Station street standards: 6aC12 -- Project Name: _________ _ Review Date:.~----------- Reviewer:.~----------~ Public/Private Storm Sewer General Ji Overall plan layout of drainage facilities (can be shown on street plan) showing easements O If separate instrument easements are needed -do not approve until we get them recorded )1 Plan and profile for all storm sewers O TXOOT permits needed? fl Scaled and Signed 0 Engineers Estimates Storm Sewer/Culverts ft Pipe material (RCP ... storm, RCPorCMP = culvert) ~ Pipe sizes labeled (see pg.47 DPDS) .'-! Siu/Location sufficient for overall City oeeds/masterplan ~ Depth (min cover) p Depth (eXCiCSRve) Jd. All utilities in plan & profile w/sizes and type A Private vs. Public line distinction '!{ Stleet grades-existing and proposed (centerline, right and left) shown in profile jf. Flowlines (specified/labeled) ~ Conflicts with other utilities shown l Labels on all major items in plan & profile Ji! 1.-0cated within drainage easement or right-of-way (specify width) (public only) ~ Easement width adequate per DPDS t Stationing shown 'if Outfall location (if open, is rip-rap occded per design calcs) ,LJto Does it match drainage report (sizes, inlets, etc) ,AJko Hydraulic Grade Linc (on plan or in drainage report) Junction Boxes/Manholes/Inlets 0 Lines end in JB/MH 0 JBIManhole spacing (see pg 47 DPDS) 0 JBIManholes ~ible from public ROW/easement 0 JB/Manholes at change of alignment, grade or si7.c 0 Drops through inlet/manhole/JB (see pg 48 DPDS) 0 Cwb inlets shown and labeled (referenced to drainage report) ~ 0 Standard Details noted or included (referenced as city of CS Standard Details) 0 Details for all non-standard items (included/ok) (not on CS Std. detail sheet) 0 Emhedmeot details (specify option) 0 Trench safety if deeper than ,. 0 Erosion control notes 0 Culverts (SET) 0 Inlet/1-Box or manhole details (manhole ~) 7ol12 Project Name: _________ _ Review Date:.~---------- Reviewer.~----------~ Public/Private Storm Sewer (cont.) ~ ~ Cross sections with side slopes -meets DPDS ;( CbanncJ Liner -per DPDS /.f Longitudinal slope (0.4% min.) 'f Rip Rap needed? Details 0 Standard Details noted or included (referenced as city of CS Standard Details) 0 Details for all non-standard items (include/ok) (not on CS Std. detail sheet) 0 Erosion control notes Detention System ~· Side slopes "-. Bottom slopes ~ Grading plan ~ Low 1low flume .%._ Outlet Structure shown -corresponds to drainage report ft Inlet Structure shown -corresponds to drainage report ~ Emergency spillway -corresponds to drainage report 0 Rip Rap if high velocities exist at inlet or outlet -lengthlwidth/siz.e/details fn Flowlines at inlet and outlet 0 Complies with drainage report Details 0 Standard Details noted or included (referenced as city of CS Standard Details) 0 Details for all non-standard items (included/ok) (not on CS Std. detail sheet) 0 Erosioncontrolnotes 0 Inl~.~ 0 Outlet structwc The following items arc variances to the College Station drainage standards: lall2 LOOK IN CONFIDENTIAL BINDER FOR OTHER · SUPPORTING MATERIAL