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Home My WebLink About50 Kappa Delta Sorority 99-326 1010 University Oaks Blvd.DEVELOPMENT PERMIT PERMIT NO . 99-500326 Kappa Delta Sorority FOR AREAS OUTSJDE THE SPECIAL FLOOD HAZARD AREA RE: CHAPTER 13 OF THE COLLEGE ST A TION CITY CODE SITE LEGAL DESCRIPTION: Lot 5. Block 1 T imber Rj dge Addit ion 3rd Instal lment DATE OF ISSUE: =12~/=1 0~/1=9~9~9 ___ _ OWNER: Kappa Delta Sorority/ Vi rgi nia Corporation 3205 Players Lane Memphis , TN 38125 1-800-536 -1897 TYPE OF DEVELOPMENT: F uU Permi t SITE ADDRESS: 1010 Un ive rsity Oaks DRAINAGE BASIN: Wo lf Pen C reek VALID FOR ll_ MONTHS SPECIAL CONDITIONS: A Certificate of Occupancy will not be issued until the private drainage easement onto the neighboring Sausalito Apartments property has been executed. The Contractor shall take all necessary precautions to pre vent silt and debris from leaving the immedi ate construction site in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design Criteria. The Owner and/or Contractor shall assure that all disturbed areas are sodden and establishment of vegetation occurs prior to removal of any silt fencing or hay bales used for temporary erosion control. The Owner and/or Contractor shall also insure that an y disturbed vegetation be returned to its original condition , placement and state . The Owner and/or Contractor shall be responsible for an y damage to adjacent properties, city streets or infrastructure due to heavy machinery and/or equipment as well as erosion, siltation or sedimentation resulting from the permitted work. Any trees required to be protected by ordinance or as part of the landscape plan must be completely fenced before any operations of this permit can begin . 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 depo sited in city streets, or existing drainage facilities . I hereby grant this permit for de velopment of an area OUTSLDE the special flood hazard area. All development shall be in accordance with the plans and specifications submitted to and approved by the City Engineer in the development ermit application for the above named project and all of the codes and ordinances of the City of College Stat on at apply . !Z-/;o/9? Date I / Owner/ Agent _ . " ~_..--____,. -- Contractor Date Date KAPPA DELTA SORORITY HOUSE DRAINAGE ANALYSIS November 1999 By /ltrrcHELL~/ltoRGAN, LLP EngineetS & ConstructotS 511 UnivetSity Drive, Suite 204 College Station, Texas 77840 Office ( 409) 260-6963 Fax (409) 260-3564 KAPPA DELTA SORORITY HOUSE DRAINAGE ANALYSIS November 1999 By /hrrCHELL&/hoRGAN, LLP Engineers & Constructors 511 University Drive, Suite 204 College Station, Texas 77840 Office (409) 260-6963 Fax (409) 260-3564 CERTIFICA TION I hereby certify that this report for the drainage design o f Kappa Delta So rority House was prepared under my supervision in accordance with the provisions of the City of College Station Drainage Policy and Design Standards for the owners thereof 1 Kappa Delta Sorority Drainage Analysis November 1999 Introduction Kappa Delta Sorority Drainage Analysis November 1999 The Kappa Delta Sorority House is located on the south side of University Oaks Drive just west of the intersection of University Oaks Drive and Munson Avenue in the City of College Station. Two existing sorority houses bound it on the east and west. A Circuit City retail store and an existing multi-family complex (Sausalito Apartments) are located to the south of the project site and existing duplex housing is located north of the site across University Oaks Drive. Purpose This report was generated for the Kappa Delta Sorority. It includes the pr~development and post-development analysis of the site and the effects of the development on the downstream system . The design has been developed to direct all flow toward the Sausalito Apartments from three (3) post-development drainage areas. This post-development flow is designed so as not to exceed the flow that reached the Sausalito Apartment parking lot prior to this development. In order to assure that downstream properties are not adversely affected with this design, the detention basin has been designed to "over" detain to account for the increased runoff volume for the entire site. The flows from the 5-through the 100-year events are shown below in Table 1. Storm Event 5-year IO-year 25-year 50-year 100-year Drainage Basin Table 1 Pre-developed Discharge 6 cfs 7 cfs 8 cfs 9 cfs 10 cfs Post-developed Discharge 4 cfs 4 cfs 4 cfs 5 cfs 5 cfs The pr~ and post-development drainage areas are shown on Exhibit A-1 and A-2 , respectively . As seen on Exhibit A-1, drainage area "DA2PRE'', a 0.212-acre area drains toward the Circuit City property and drainage area "DAI PRE'', a 1.322-acre area drains toward the Sausalito Apartments. Although drainage area "DA2PRE" drains toward Circuit City, the drainage patterns on Circuit City divert that flow back to the Sausalito Apartments parking lot. As seen on Exhibit A-2, there are three (3) post-development drainage areas . These areas are "DAIPOST", "DA2POST", and "DA3POST" and are 1.375 acres, .071 acres and .088 acres respectively. Drainage area "DAIPOST" flows into the detention pond, while "DA2POST" and "DA3POST" both "free flow " from the site. 2 Kappa Delta Sorority Drainage Analysis November 1999 Drainage Analysis T he drainage analysis wa s completed using the Rational Formula to compute runoff from the site. Exhibit B-1 shows the individual drainage areas and their runoff rates for the 2-yr through 100-yr storm events. Exhibits C-1 through C-5 show the routing of these flows through the detention pond and the addition of the pond outflow with the flow from areas "DA2POST" and "DA3POST'', which bypass the pond. Because the flow from the latter two areas is small, they do not add a significant amount to the pond outflow. The orifice that is modeled in the pond is a 12" diameter discharge pipe. This discharge pipe will be constructed from the pond outlet to the curb on the Sausalito Apartments. This will avoid any erosion that may occur on the adjacent property. (See Exhibit A- l) An offsite easement will be acquired from the Sausalito property owner to accomplish this offsite work. As seen on Table 1 and Exhibits C-1 through C-5, the post-development flow from the site is much less than the pre-development flow. For the 100-year event, the flows are reduced in half, from a pre-development flowrate of 10 cfs to a post-development flowrate of 5 cfs. Both stage-storage and stage-discharge curves are shown as Exhibits D-1 and D-2. These graphs show the pond elevations and equivalent storage from 293.25 feet to 296 feet as well as the discharge relationship to the water surface elevation in the pond. The pond is an earthen pond with a low-flow channel and has 4:1 side slopes. The highest water surface elevation attained in the pond is during the I 00-year event and is 294.8 feet, leaving 1.2 feet of freeboard on the pond. An overflow weir will be constructed at elevation 295 feet and will be effective for flows from storms greater than the 100-year event. Conclusion The analysis shows that the detention pond performs well. The maximum water surface elevation attained is well within ordinance requirements for required freeboard, and it reduces the flow from the site to more than comply with the City of College Station Drainage Ordinance. The Kappa Delta Sorority site does not increase the flow onto the Sausalito Apartments; in fact the pond will actually decrease the peak flowrate entering the Sausalito Apartment site for all storm events. 3 Kappa Delta Sorority Drainage Analysis November 1999 I BETA PHI SORORITY HOUSE SAUSALITO APARTMENTS UNIVERSITY OAKS EXHIBITA-1 CIRCUIT CITY 4 PRE DEVELOPMENT ONJNAQE AREA MAP Scale: 1 Inch = 50 feet DELTA GAMMA SORORITY HOUSE Kappa Delta Sorority Drainage Analysis November 1999 >I BETA PHI SORORllY HOUSE EXHIBITA-2 UNIVERSllY OAKS DA 1POST 1.375 Acres -------- SAUSALITO APARTMENTS -- I I DA 2POST 0.071 Acres CIRCUIT CllY 5 POST DEVELOPMENT DRAINAGE AREA MAP Scale: 1 inch = 50 feet DELTA GAMMA SORORllY HOUSE Kappa Delta Sorority Drainage Analysis November 1999 < ~ c LaJ < L&J _, g a:: LtJ Q. ~ t-< < a:: o< t-z u .... :i: LaJ < z L&J oi-<.!J ..J L&J ::E ..J z Cl L&J a:: L&J < < _, LaJ <Z < ~< c I-z ~ _, LtJ I-c (J') 0 a:: _, < ~ z L&J Q. I-L&J a:: :::> a:: > c 0 NO. 'AC. 0.4 0.55 0.7 ~t. DAlPRE 1.32 1.32 0.00 o.oc 0.53 265.C DA2PRE 0.21 0.21 0.00 0.00 0.08 260.0 DAlPOST 1.38 o.oc 0.00 1.38 0.9€ 115.C DA2POST 0.07 0.07 0.00 0.00 0.03 260.C DA3POST 0.09 0.00 0.00 o.os 0.0E 1.C EXHIBIT B-1 Rational Formula Drainage Area Calculations Kappa Delta Sorority House ...... 3 _, ~ < .... g :i: ~ >-.... t-u u ::l ..J ........ 0 u I-I-~~ a:: Cl _, ~ 8 0 u L&J N i..n LaJ z .... 0 ... ..J (J') -t-LI.I a:: (l:J ~ t-_, LI.I LaJ u ::::> :::> t-> <.!J t-:::> <.!J ft. ft. ~. ~Is min min In/Hr cf s In/Hr cf s In/Hr 4.5 1.C 1.C o.s 4.8 5.0 8.22 4.4 9.9 5.2 11.C 4.0 l.C l.C o.s 4.9 5.C 8.22 0.7 9.S o.s 11.C 2.0 300.C 4.0 1.6 4.2 5.0 8.22 7.9 9.9 9.5 11.C 4.0 l.C 1.0 0.9 4.9 5.0 8.22 0.2 9.9 0.3 11.C l.C 40.C 2.C 4.5 0.2 5.0 8.22 0.5 9.9 0.6 11.0 6 0 LO LO ... N 0 N 0 -cf s In/Hr ~f s 5.8 12.5 6.6 o.s 12.: 1.1 10.6 12.5 12.0 0.3 12.5 0.4 0.7 12.: 0.8 0 0 0 0 0 LO 0 LO 0 .-t ... -0 -In/Hr cf s In/Hr cf s 14.1 7.5 15.S 8.4 14.1 1.2 15.8 1.3 14.1 13.6 15.8 15.2 14.1 0.4 15.8 0.4 14.1 0.9 15.8 1.C Kappa Delta Sorority Drainage Analysis November 1999 EXHIBIT C-1 PROPOSED DETENTION POND ROUTING 5-YEAR EVENT Kappa Delta Sorority House jt>:A~-!Pond Routing I EVENT= I 5 I I D.A. # I D.A. # I I I D.A. # I D.A. # 1 'It -a I! 2 "O ~ .... :g 0. ~ ~ ~ i c ~ .... .... t: a ~ c :8 "8 .i if w ~ 0. ~ ~ ~ Iii ~~ e If w f ~ I ci ~ e~ Qo r -9.5r----~ ---, I 0.3/ 0.6/ I I 5.2/ 0.8 1Tc 5.0 5.0 5.0 5.0 _5.0 -~-==~== inc 1.0 Time cfs cfs cfs cfs cfs ft cfs cfs cfs cts cfs C'fS-0.0 o.o i.go o.oo o.oo o.oo 293.2 o.o o.o o.oo o.o --.. ·Cf.0--------0.00 1.0 1.9 5.69 1.52 1.90 0.19 293.3 0.1 0.1 0.37 1.0 ·0.2 f 21 2.0 3.8 9.49 5.76 7.21 0.73 293.4 0.1 0.2 1.08 2.1 _Qj ____ i42 3.0 5.7 13.28 12.18 15.25 1.53 293.7 0.2 0.4 2.07 3.1 0.5 3.63 I 4.0 7.6 17.08 20.58 25.46 2.44 294.0 0.2 0.5 3.15 '"l[2·-----··o.7 .. ·----4.84 5.0/ 9.5/ 18.03/ 32.36/ 37.661 2.651 294.1/ 0.31 0.61 3.531 I 5.21 0.81 6.05 6.o1 8.5F16.13F 44.67! 50.391----2.86~-294.2~ --o.31 ----o.51-3.66I ----I --4.7f o.81 -5~45· 7.0 7.6 14.23 54.72 60.80 3.04 294.2 0.2 0.5 3.75 4.2 0.7 4~84. 8.o1 6.61 12.331 62.6ll 68.961 3.17I 294.31 0.21 0.4I 3.79I I 3.71 o.61_J:~~ 9.0 5.7 10.44 68.39 74.94 3.27 294.3 0.2 0.4 3.81 3.1 0.51 3.63 I 10.0 4.7 8.54 72.15 78.83 3.34 294.4 0.1 0.3 3.78 2.6 .Q.:.1.,_.--~~Ql 11.0 3.8 6.64 73.94 80.69 3.37 294.4 0.1 0.2 3.73 2.1 0.3 2.42 I 12.0 2.8 4.74 73.84 8_Q:?8_ --·-~:~7 _ 294.4 0.1 0.2 3.64 1.6 0.3 _1_~82: 13.0 1.9 2.85 71.91 78.59 3.34 294.4 0.1 0.1 3.51 1.0 0.2 1.21 14.0 0.9 0.95 68.22 74.76 3.27 294.3 0.0 0.1 3.36 0.5 0.1 "fili I 15.0 0.0 0.00 62.81 69.16 3.18 294.3 0.0 0.0 3.18 0.0 -~~--2.:Q_Q 16.0 0.0 0.00 56.67 62.81 3.07 294.3 0.0 0.0 3.07 0.0 0.0 0.00 17.0 0.0 0.00 50.73 56.67 2.97 294.2 0.0 0.0 2.97 0.0 0.0 0~00 18.0 o.o o.oo 45.oo 50.73 2.87 294.2 o.o o.o 2.87 o.o ·O.o~·-a~oo 19.0 0.0 0.00 39.46 45.00 2.77 294.1 0.0 0.0 2.77 0.0 0.0 0~00 20.0 o.o o.oo 34.11 39.46 2.68 294.l o.o o.o 2.68 o.o o.o -5.oo· I 2i.ol o.o1 0:901 __ ?_~.93 34.11 2.59 294.1 o.o o.o 2.59 o.o o.o __ Q:9.Q 22.0 0.0 0.00 23.94 28.93 2.50 294.0 0.0 0.0 2.50 0.0 .0 0.00 PEAK FLOWS 9 0.00 indicates inital condition 9909.dra 3 294.4 0 7 1 4 5 l 6 Kappa Delta Sorority Drainage Analysis November 1999 EXHIBIT C-2 PROPOSED DETENTION POND ROUTING 10-YEAR EVENT D.A. # Pond Routing -s:. Q. I-I! ~ gi .. "O ~ :t Qp 10.6 Tc 5.0 inc 1.0 Time cfs 0.0 0.0 1.0 2.1 2.0 4.2 3.0 6.3 4.0 8.5 5.0 10.6 6.0 9.5 7.0 8.5 8.0 7.4 9.0 6.3 10.0 5.3 11.0 4.2 12.0 3.2 13.0 2.1 14.0 1.1 15.0 0.0 16.0 0.0 17.0 0.0 18.0 0.0 19.0 0.0 20.0 0.0 21.0 0.0 22.0 0.0 PEAK FLOWS 11 0.00 indicates inital condition 9909-dra .. ! I cf s 2.12 6.35 10.58 14.81 19.04 20.09 17.98 15.86 13.75 11.63 9.52 7.40 5.29 3.17 1.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 c: ~ ~ cfs 0.00 1.69 6.42 13.58 23.40 36.98 51.13 62.75 71.94 78.78 83.34 85.70 85.94 84.13 80.34 74.63 68.09 61.77 55.66 49.76 44.06 38.55 33.23 Kappa Delta Sorority House EVENT= 10 D.A.# D.A.# c i I-I-ii 8 ~ .... 0. ! A ~ ~ U) N 0.3 0.7 5.0 5.0 cf s cf s ft cfs cf s 0.00 0.00 293.2 0.0 0.0 2.12 0.21 293.3 0.1 0.1 8.03 0.81 293.5 0.1 0.3 16.99 1.71 293.8 0.2 0.4 28.38 2.49 294.0 0.2 0.5 42.44 2.73 294.1 0.3 0.7 57.08 2.97 294.2 0.3 0.6 69.11 3.18 294.3 0.2 0.5 78.62 3.34 294.4 0.2 0.5 85.69 3.46 294.4 0.2 0.4 90.41 3.54 294.4 0.2 0.3 92.86 3.58 294.4 0.1 0.3 93.11 3.58 294.4 0.1 0.2 91.23 3.55 294.4 0.1 0.1 87.30 3.48 294.4 0.0 0.1 81.39 3.38 294.4 0.0 0.0 74.63 3.27 294.3 0.0 0.0 68.09 3.16 294.3 0.0 0.0 61.77 3.05 294.2 0.0 0.0 55.66 2.95 294.2 0.0 0.0 49.76 2.85 294.2 0.0 0.0 44.06 2.75 294.l 0.0 0.0 38.55 2.66 294.1 0.0 0.0 4 294.4 0 1 8 D.A.# fil ~I w If .. C! 5.8 5.0 cf s cfs 0.00 0.0 0.41 1.2 1.20 2.3 2.30 3.5 3.28 4.7 3.72 5.8 3.86 5.2 3.97 4.7 4.03 4.1 4.05 3.5 4.03 2.9 3.97 2.3 3.88 1. 7 3.75 1.2 3.58 0.6 3.38 0.0 3.27 0.0 3.16 0.0 3.05 0.0 2.95 0.0 2.85 0.0 2.75 0.0 2.66 0.0 4 6 D.A. # Cl I z ~~ g 1Jj 0.9 5.0 -------·--·-els els ..... 0.0 cY.06 0.2 T.35 ---0.4 ---;r?o 0.6 4-:Cl5 0.7 ---g.·;15 0~9 --6:74 0.8 6.oi 0.7 5:4o 0.7 4.72 '().6 ---4~55 0.5 3.37 0.4 2. 7(j 0.3 2.c52 0.2 1.35 0.1 b.67 0.0 0.00 0.0 croo 0.0 0.00 0.0 0.00 0.0 o.ciO' 0.0 0.06 0.0 o.oa· 0.0 0.00 ·-1 7 Kappa Delta Sorority Drainage A 11alysi!l' November 1999 EXHIBIT C-3 PROPOSED DETENTION POND ROUTING 25-YEAR EVENT D.A. # Pond Routing "*' .:: Cl. ~ f Cl ... 0 ~ .. "Cl ... 1 >-~ ::i:: Qp 12.0 Tc 5.0 inc 1.0 Time cfs cfs 0.0 0.0 2.41 1.0 2.4 7.23 2.0 4.8 12.04 3.0 7.2 16.86 4.0 9.6 21.68 5.0 12.0 22.88 6.0 10.8 20.47 7.0 9.6 18.07 8.0 8.4 15.66 9.0 7.2 13.25 10.0 6.0 10.84 11.0 4.8 8.43 12.0 3.6 6.02 --13.C) --·---2-.4 ·--· ··----3.61 14.0 1.2 1.20 15.0 0.0 0.00 16.0 0.0 0.00 17.0 0.0 0.00 18.0 0.0 0.00 19.0 0.0 0.00 20.0 0.0 0.00 21.0 0.0 0.00 -·----·. 22.0 0.0 0.00 PEAK FLOWS 12 0.00 indicates inital condition 9909-dra c ~ ~ cf s 0.00 1.92 7.31 15.46 27.21 43.22 59.85 73.59 84.54 92.80 98.45 101.58 102.28 100.63 96.70 90.58 83.50 76.66 70.06 63.67 57.50 51.54 45.78 Kappa Delta Sorority House t:VENT= 25 D.A.# D.A.# c ~ I I ~ ~ .... ~ A '8 ! UJ ~iii N 0.4 0.8 5.0 5.0 cfs cf s ft cfs cf s 0.00 0.00 293.2 0.0 0.0 2.41 0.24 293.3 0.1 0.2 9.15 0.92 293.5 0.1 0.3 19.35 1.95 293.8 0.2 0.5 32.32 2.56 294.1 0.3 0.6 48.89 2.84 294.2 0.4 0.8 66.10 3.13 294.3 0.3 0.7 80.32 3.37 294.4 0.3 0.6 91.66 3.56 294.4 0.2 0.5 100.20 3.70 294.5 0.2 0.5 106.05 3.80 294.5 0.2 0.4 109.29 3.85 294.5 0.1 0.3 110.01 3.87 294.6 0.1 0.2 108.30 3.84 294.5 0.1 0.2 104.24 3.77 294.5 0.0 0.1 97.91 3.66 294.5 0.0 0.0 90.58 3.54 294.4 0.0 0.0 83.50 3.42 294.4 0.0 0.0 76.66 3.30 294.3 0.0 0.0 70.06 3.19 294.3 0.0 0.0 63.67 3.08 294.3 0.0 0.0 57.50 2.98 294.2 0.0 0.0 51.54 2.88 294.2 0.0 0.0 4 294.6 0 1 9 D.A.# a w ~~ w a:: a. ... e s: a 6.6 5.0 cfs cfs 0.00 0.0 0.47 1.3 1.37 2.6 2.62 4.0 3.46 5.3 3.96 6.6 4.14 6.0 4.27 5.3 4.34 4.6 4.38 4.0 4.36 3.3 4.30 2.6 4.20 2.0 4.06 1.3 3.88 0.7 3.66 0.0 3.54 0.0 3.42 0.0 3.30 0.0 3.19 0.0 3.08 0.0 2.98 0.0 2.88 0.0 4 7 D.A. # . -w e,, z a:: ~~ a. ~ e~ 1.1 ·-5.0 cfs cts 0.0 -·--o-:oo 0.2 1~54 0.4 3.07 0.6 4.61 0.8 6.14 1.1 7.68 Co -·--6.9f 0.8 6.14 0.7 5.38 0.6 4.61 o:s --3.84 0.4 3.07 0.3 2.36 0.2 1.54 'o:T ~--057 0.0 0.00 0.0 0.06 0.0 0.00 0.0 0.00 0.0 6~50 0.0 0.00 0.0 0.00 0.0 0.00 1 8 Kappa Delta Sorority Drainage Analysi!J' November 1999 EXHIBIT C-4 PROPOSED DETENTION POND ROUTING 50-YEAR EVENT D.A.# Pond Routing 'It .r:; a. ... Ill ... ~ Cl 0 ... 'ti .... >. ~ ::i:: Qp 13.6 Tc 5.0 Inc 1.0 Time cfs 0 .0 0 .0 1.0 2 .7 2 .0 5 .4 3 .0 8.1 4 .0 10 .9 5.0 13 .6 6 .0 12 .2 7 .0 10 .9 8 .0 9.5 9 .0 8.1 10.0 6 .8 11.0 5 .4 12 .0 4 .1 13 .0 2.7 14 .0 1.4 15 .0 0 .0 16 .0 0 .0 17 .0 0 .0 18.0 0 .0 19 .0 0 .0 20 .0 0 .0 21.0 0 .0 22 .0 0.0 PEAK FLOWS 14 0.00 in d ica tes init a l cond iti on 9909 -dra .... 1: I cfs 2 .72 8.15 13 .58 19 .01 24.44 25.79 23.08 20 .36 17.65 14.93 12 .22 9 .50 6.79 4.07 1.36 0 .00 0 .00 0 .00 0 .00 0 .00 0 .00 0.00 0 .00 c a ~ ~ cfs 0.00 2 .17 8 .24 17.43 31.18 49 .72 68.95 84.90 97 .69 107 .43 114.21 118.15 119.32 117 .83 113.77 107 .23 99.59 92 .21 85.07 78.18 71.52 65.09 58.87 Kappa Delta Sorority House t.VENI= 50 D.A.# D.A .# c i I '; c 0 .... ;I ) 1: A 'ti : i ~~ fQ d 0.4 0.9 5.0 5.0 CfS cfs ft cfs cf s 0.00 0.00 293 .2 0 .0 0 .0 2.72 0.27 293.3 0 .1 0 .2 10 .31 1.04 293.5 0 .2 0 .3 21.82 2 .19 293.9 0 .2 0 .5 36.43 2 .63 294 .1 0 .3 0.7 55 .62 2 .95 294.2 0.4 0 .9 75 .52 3 .28 294.3 0 .4 0.8 92 .03 3 .56 294.4 0 .3 0 .7 105.26 3.79 294.5 0.3 0.6 115.34 3.96 294.6 0.2 0 .5 122.36 4.07 294 .6 0 .2 0.4 126.43 4 .14 294.7 0.2 0 .3 127 .65 4 .16 294.7 0 .1 0 .3 126 .11 4.14 294.7 0.1 0.2 121.91 4 .07 294.6 0.0 0 .1 115.13 3.95 294.6 0 .0 0.0 107 .23 3 .82 294.5 0 .0 0 .0 99 .59 3 .69 294.5 0 .0 0 .0 92 .21 3 .57 294.4 0 .0 0 .0 85.07 3 .45 294.4 0.0 0 .0 78.18 3 .33 294.3 0 .0 0 .0 71 .52 3 .22 294.3 0 .0 0 .0 65 .09 3.11 294.3 0 .0 0 .0 4 294.7 0 l 10 D.A.# Q w ~ ~ ~~ Q. ~ e e: 7.5 5.0 cfs cfs 0 .00 0 .0 0 .53 1.5 1.54 3 .0 2 .96 4.5 3 .64 6 .0 4 .22 7 .5 4.43 6 .7 4 .58 6 .0 4 .67 5.2 4 .72 4 .5 4 .71 3 .7 4 .65 3 .0 4 .54 2 .2 4 .39 1.5 4 .19 0.7 3 .95 0 .0 3 .82 0 .0 3 .69 0.0 3 .57 0 .0 3.45 0 .0 3 .33 0 .0 3 .22 0 .0 3 .11 0 .0 5 7 D.A.# ·--- ~ w a: ~~ Q. ~ e~ 0 1.2 --5.0 cfs cfs 0.0 0 .00 0.2 i~3 0 .5 3 .46 0 .7 5 .19 1.0 6 .93. 1.2 8.66 1.T >-----r:79 1.0 6 .93 ·-o.8 >-----6.06' 0 .7 5 .19 -0:6 ---· --··4~3j 0 .5 3:46 0 .4 2 .66 .. D.2 ,___ ____ f.'7'.j 0 .1 0 .8'1 -0 .0 o.'0-6 0 .0 0 .00 ---0.fS ,__o.oo 0 .0 ·o.oo 0 .0 0 .00 0 .0 o.od 0 .0 0 .00 -0 .0 0~06 -1 9 K appa D elta Sorority Drainag e A nalysis No ve mber 1999 EXHIBIT C-5 PROPOSED DETENTION POND ROUTING 100-YEAR EVENT D.A.# Pond Routing ~ .c Q. I!! ... 2 ei "C .... >. ~ :r: Oo 15.2 Tc 5.0 inc 1.0 Time cfs 0.0 0.0 1.0 3.0 2.0 6.1 3.0 9.1 4.0 12.2 5.0 15.2 6.0 13.7 7.0 12.2 8.0 10.6 9.0 9.1 10.0 7.6 11.0 6.1 12.0 4.6 13.0 3.0 14.0 1.5 15.0 0.0 16.0 0.0 17.0 0.0 18.0 0.0 19.0 0.0 20.0 0.0 21.0 0.0 22.0 0.0 PEAK FLOWS 15 0.00 indicates inital condition 9909-dra .... j cf s 3.04 9.12 15.20 21.28 27.36 28.88 25.84 22.80 19.76 16.72 13.68 10.64 7.60 4.56 1.52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 c q :c ~ cfs 0.00 2.43 9.22 19.57 35.45 56.67 78.63 96.92 111.66 122.96 130.95 135.72 137.40 136.09 131.88 124.88 116.65 108.69 101.00 93.58 86.40 79.46 72.76 Kappa Delta Sorority House EVENT= 100 D.A.# D.A.# c a ~ g I I -;; .... ~ i ~ ~ U) 0 .!! N 0.. w 0.4 1.0 5.0 5.0 cfs cfs ft cf s cfs 0.00 0.00 293.2 0.0 0.0 3.04 0.31 293.3 0.1 0.2 11.55 1.16 293.6 0.2 0.4 24.42 2.42 294.0 0.3 0.6 40.85 2.70 294.1 0.4 0.8 62.81 3.07 294.3 0.4 1.0 85.54 3.45 294.4 0.4 0.9 104.47 3.77 294.5 0.4 0.8 119.72 4.03 294.6 0.3 0.7 131.42 4.23 294.7 0.3 0.6 139.68 4.37 294.7 0.2 0.5 144.62 4.45 294.8 0.2 0.4 146.36 4.48 294.8 0.1 0.3 145.00 4.46 294.8 0.1 0.2 140.65 4.38 294.8 0.0 0.1 133.40 4.26 294.7 0.0 0.0 124.88 4.12 294.7 0.0 0.0 116.65 3.98 294.6 0.0 0.0 108.69 3.84 294.5 0.0 0.0 101.00 3.71 294.5 0.0 0.0 93.58 3.59 294.4 0.0 0.0 86.40 3.47 294.4 0.0 0.0 79.46 3.35 294.4 0.0 0.0 4 294.8 0 1 11 D.A.# Q w U) ~ ~& 0.. ~ e If 8.4 5.0 cfs cfs 0.00 0.0 0.59 1. 7 1.73 3.3 3.28 5.0 3.84 6.7 4.49 8.4 4.73 7.5 4.91 6.7 5.02 5.8 5.08 5.0 5.08 4.2 5.02 3.3 4.91 2.5 4.74 1.7 4.52 0.8 4.26 0.0 4.12 0.0 3.98 0.0 3.84 0.0 3.71 0.0 3.59 0.0 3.47 0.0 3.35 0.0 5 8 D.A.# .. ~~ w a: Q. ~ E~ 1.3 ·---5.0 -·· cfs cts ·--o.o 1-----0~06 0.3 1.94 --0.5 3.I~8 0.8 5.81 ·--rr f--·--r75 1.3 9~6§ 1.2 8.72 1.1 7.75 0.9 f-----6~78 0.8 5.81 0.7 4.85 0.5 3:88 0.4 i:9T 0.3 1~94 0.1 0.97 0.0 0.00 0.0 0.00 ·o.o -·--o~oci 0.0 0.00 0.0 o.oa· 0.0 0.00 0.0 o.oci 0.0 0.06 1 10 Kappa Delta Sorority Drainage A11alysis November 1999 0.300 0 .250 ~ 0.200 u .!!. f ~ 0 .150 0 .100 0.050 EXHIBITD-1 Kappa Delta Sorority House Stage-Storage Curve o.ooo L ---........:::====+========-----+-----+------+-----+----_J 293 293 .5 294 294.5 Elevation (mal) 12 295 295.5 296 296 .5 Kappa Delta Sorority Drainage Analysis November 1999 50.000 25 .000 EXHIBITD-2 Kappa Del? Sorority House Stage-Discharge Curve 0 .000 L-.--==+========~========::_ ___ ___.i--------4----J 293 .0 293 .5 294 .0 294.5 295 .0 Elevation (msl) 13 295 .5 296 .0 296 .5 Kappa Delta Sorority Drainage Analysis November 1999 DEVELOPMENT PERMIT MINIMUM SUBMITTAL REQUIREMENTS i/ $100.00 Development Permit Application Fee. ~l!iJge and erosion control plan, with supporting Drainage Report two (2) copies each. ~Notice of Intent (N.0.1.) if disturbed area is greater than 5 acres. LEGAL DESCRIPTION LC1f 6 1 ~c-i'-I lit.A.PS. 'R1t>EJe: Aool11ot-L 3c._p 1..Js~r APPLICANT (Primary Contact for the Project): Name ~ao Mc..~Z46 Street Address 1t>'ZY 0(..D ~ e.o s~ llo' City _.._t\>=..:...l;~.....:.....;_:>-)'---------- State l)' Zip Code °110-z..4 E-MailAddress ------------ Phone Number '1.l ~ -~'? -l "2.\ ~ Fax Number _"1--L...l ?-'--.. _'&P_'3_-_l_2.._H_o _______ _ PROPER1Y OWNER'S INFORMATION: Name · ~ffA ~~ So~~!'{ ~ '.hu11J1A ~~1\~J Street Address ~1.o&? e~'!etlJS LA~ City ...... Ua.J...:.=c.._::+-;P~-'-'-AL------- State 1° ~ Zip Code ~'t>l'Z-CO E-Mail Address ----------- Phone Number I-i oo ... f/)?;,f.o ""lg'\1 Fax Number _______________ _ AR~R ENGINEER'S INFORMATION: Name M~.f \.lt.o!Z6A.l 1LI..-P "'---Street Address t:?ll U~ ~:r'{ \)'2-t\le State :U Zip Code 11 t>..\O Phone Number 4o'\: 1.kJo· <Av'? ~~ City C..0u...~ E-Mail Addres__;s=-V-~-~-'--i kJ\--.-s.....,Uc:--w--~---.eo-111- Fax Number ~'1· Zh<J· ~ . - Application is hereby made for the following develo ment specific site/wateiway alterations: ,. ~ \? ~ <»t\c;.~ a. S<m>rL ~ ACKNOWLEDGMENTS: , design engineer/owner, hereby acknowledge or affinn that: The information 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 permit appli according to these documents and the requirem "'roperty Owner(s) \.....__,,,DEVELOPMENT PERMIT DPERMIT.DOC 3fl4/99 1 of2 ' . ' . ' . · ... , CERTIFICATIONS: (for proposed alterations within designated flood hazard areas .) A. L ____ ,........ ______ certify that any nonresidential structure on or proposed to be on this site as part ,f this application is prevent damage to the structure or its contents as a result of flooding from the 100 year .onn. ~ Engineer Date B. I, ----ttt-+-f--1t-+-----"' certify that the finished floor elevation of the lowest floor, including any basement, of any res cture, proposed as part of this application is at or above the base flood elevation established in the latest Federal · · ration Flood Hazard Study and maps, as amended. Engineer Date __ _....,.,............__,_-+-""""""'""----' certify that the alterations or development covered by this pennit shall not 'lily of the waterway adjoining or crossing this permitted site and that such alterations or development are encroachments of Engineer t ·th uirements of the City of College Station City Code, Chapter 13 concerning ys and of floodway fringes. Date . I, ---1--+--l~----~ do certify that the proposed alterations do not raise the level of the 100 year _ "--.Jood above elev ed 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 shaII apply. '--DEVELOPMENT PERMIT DPERMIT.DOC 3124/99 2of2 ' . .. I•• .. ' City of College Station Development Services 110 I Texas A venue College Station, Texas 77840 Attn: JeffTondre, P.E. Dear Mr. Tondre: December I, 1999 I have received and reviewed the drainage report for the Kappa Delta Sorority House written by Mitchell & Morgan, LLP. I am satisfied that the runoff from the Kappa Delta site does not increase the flow onto the Sausalito Apartment site. Therefore, I do not have any problem with the Kappa Delta detention pond outlet pipe discharging into the parking lot of the Sausalito Apartments. I intend to sign a private drainage easement document for this construction once drafted. Kappa Delta will forward you a copy of this executed easement. If you have any questions, I may be reached at (972) 234-1551 . J£~· Charles Laningham YY ";h~~----... Jamespoint Management Cc: Mitchell & Morgan, LLP Greek Builders, Inc. L. .J...JVL.UVU Parking 282.8 x ~-/v (.,.__,.__,. x 294.5 ) lJ x296.6 /11 u x293.2 x29~ > \ f rns Court . I.LI . a. >: gi gi ·-c: 0 c: 0 .,, .... c: ·-.. ~~-~ ~I: Q. ·-"O ... 2 B ::S~(i;::J ... ·-V> .... :; c ... .,, ltJ Cl c: c -0 ·-.Ql 8 ~~ ~ c: ofS ~ ~ 1rl .Ql ·-E' a) Kl .,, .... ~ ·-.b cs ... c: (/) I ffi ... c?S c ·gio: -~ E' ·-w .?;-~ ·c: c:n= ·-c: C>:c:; ro WO~c?SO: ul ... . a. c .... ca ~ ... --e' ltJ !~ Oa. :E gi ~~ :E~ rt:i"Oi . ~ "" ltJ ..; 5~ -8 ·-c e ~ "" a. ~ ::j ~ 0 ... GI~ z .... co <C ·-""" CJ ::s """ a::: en .,, 0 ai' ca ~.~ ~~ ... I-'° Q °'.., t;:;# :::...c'°'° ~ "" 0 I lft ... ·-·-~~ ..i f ~NO I.LI GI,.._'° ::C >U)°'N U °C GI~ Ch I-::> c:n-o lo"'4 GIGI._, ~ ... -o-PIO!E>< i.nuo.f Natalie Ruiz City of College Station Development Services 1101 Texas Ave. College Station, TX. 77840 Dear Natalie: December 9, 1999 Enclosed please find four (4) copies of the civil plans for the Kappa Delta Sorority. They are already stamped reviewed for compliance and are ready for your distribution. We have provided three (3) copies to the contractor and the original reproducibles to the architect for his inclusion with the building plans. Please call if you have auestions. Thanks, I Veronica -==-J d~ --I ~ ~ " DEVELOPMENT SERVICES TRANSMITTAL LETTER ...__,,-Name/Finn: Date: '"- Address: S"ll t) tJI VSJ!SIT'i J)f? EAsr, Su11E g04 Cot..L6~e: $T&T10 NI Dl 11 e4o Phone{4o9) 2 loo -yq le 3 Fax: (404\~ 2.kO -351e+ We are transmitting the following for Devel'opment Services to review and comment: (Check all that apply.): 0 Master Development Plan D Preliminary Plat D Final Plat D FEMA CLOMNCLOMR/LOMA/LOMR 0 SitePlan 0 Grading Plan 0 Landscape Plan D Irrigation Plan 0 Building Construction Documents w/ 0 Redlines w/ D Redlines w/ D Redlines w/ D Redlines w/ D Redlines w/ D Redlines w/ D Redlines w/ 0 Redlines w/ D Redlines INFRASTRUCTURE AND ENGINEERING DOCUMENTS .\II infrastructure documents must be submitted as a complete set. Th~llowing are included in the complete set: M ~aterline Construction Documents w/ D Redlines li:f _.flewerline Construction Documents w/D Redlines lif' Drainage Construction Documents w/ 0 Redlines 0 Street Construction Documents w/ D Redlines 0 ~ement application with metes & bounds decsription CiJ Drainage Letter or Report (I ~) w/ 0 Redlines D Fire Flow Analysis w/ 0 Redlines Special Instructions: 0 Development Permit App. 0 Conditional Use Permit 0 Rezoning Application D Variance Request 0 Other -Please specify D TxDOT Driveway Permit D TxDOT Utility Permit 0 Other -Please speclry KAPPA t>ft..TA ff<>vsE -wa..±-c:r:, s~'-..><C i olro.; .. o ... ~<. o...ll draWkl o..., TRANSMITTAL LETIER TRANSMIT.DOC 03123199 1 ofl -ol f flOt- 'f"'} Ch : . ) '.t. . ' "I ~.. . I '; . ' ' J 3 . ' Public Water Infrastructure ~ ~ ~crall utility layout sheet -showing easements (platted or by separate instrument) O If separate instrument easements arc needed -do not approve until we get them recorded 0 TXDOT permits needed? 0 Scaled and Signed 0 Engineers Estimates Linet %Pi.PC material ~ Pipe sizes (allowable .... 6,8,12,16,18 -note no 10" approved) ·Ji: Depth (4'+) (min.max) ~ Separation distances (TNRCC) ~ All utilities in plan & profile w/sizes and type 0 Private vs. Public line distinction ~ / Wyes not past property line (so meter can be within ROW /easement) )d"_ Max # of connections for si7.e waterline (TNRCC) if Pipe deflection (noted as¥-. degrees, radius -with begin/end curve, not atjl) j( Grades -existing and proposed (centerline, right and left) shown in profile % Full TNRCC complianoc 0 fao1licts with other utilities shown .if. Labels on all major items in plan & profile (crossings) ;( SiulLoc:ation sufficient for overall City needs/masterplan ~dead-end lines ~/Lines located in PUE/ROW )i/ Stationing on all fittinp and taps P""V'atvc spacing (500') y vilves -system isolation ..[Y" Valves -at hydrant 0 Bacldlow prevcnters/ and check valves uses as ncccssaiy (@irrigation/fire sprinklcr/pools/haurds) 0 Blowoffs (FH ok too) @ end of dead end lines 0 Air release valves at all major high points Fire Hydrants _er7 Fire hydrant spacing (Coverage) r( Yuc hydrant location (relative to curb) Fire hydrant -detail/type specified F"arc flow calculations provided Service Lines 0 Service lines -materials and siz.c specified from main to meter 0 Services provided to all lots to a point beyond sidewalks on both sides of street 1 oC12 Review Date : __________ _ Reviewer.·-----------~ Public Water Infrastructure(cont.) ~ 0 Standard Details noted or included (referenced as city of CS Standard Details) O Details for all non-standard items (included/ok) (not on CS Std. detail sheet) )1 All M1 valves and fittin~ 0 Thrust blocking £ Easement width adequate 0 Embcdmcnt details (specify option) 0 Trcoch safety if deeper than 5' 0 Erosion control notes The following items arc variances to the College Station public waterline standards: 2aC12 Review Date: __________ _ Reviewer: ___________ _ Public Wastewater Infrastructure General ~ Overall utility layout sheet -showing casements (platted or by separate instrument) O If separate instrument casements are needed -do not approve until we get them recorded 0 TXDOT permits needed? 0 Sealed and Signed 0 Engineers Estimates ~ ...er Pipe material ,Jr Pipe sizes (allowable .... 6,8,10,12,lS,18) ~ Depth (min COYCC) D Depth(~vc) ..e( Separation distances (TNRCC) .-ff' All utilities in plan & profile w/sizes and type ~ Private vs. Public line distinction 0 Wyes not past property line ~ Grades -existing and proposed (centerline, right and left) shown in profile ~ Flowlines (specified/labeled) ){ Full TNRCC compliance ):Y Conflicts with other utilities shown (min. I 'clear I except water -see TNRCC) .ff" Labels on all major items in plan & profile (crossings) ~ Size/Location sufficient for OYCrall City needs/masterplan A:J Lines located in PUFJROW ,.0" Stationing on all manholes and services Manholes f Lines end in MH D ,,,Manhole spacing (max 500') Z Manhole dian>cter based on depth and line size (4'vs.S' diam.) D Manhole covers -"watertight" cover if in floodplain ~,,,Manholes accessible from public ROW/easement Z Manholes at change of aligrur>cnt, grade or size D Drops through manhole (TNRCC) SemceLinet 0 Service lines -materials and size specified from main to end 0 Services provided to all lots to a point beyond sidewalks on both sides D Services~ 6" enter at manholes 3c{12 Project Name:. __________ _ Review Date:, __________ _ Reviewer.. ___________ ~ Public Wastewater Infrastructure( cont.) 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) % Easement width adequate 0 Embec:hncnt details (specify option) 0 Trench safety if deeper than S' 0 Erosion control notes The following items are variances to the College Station public wastewater standards: "al12 --------------------------------- · ...... Project Name: _________ _ Review Date: __________ _ Reviewer:.~----------~ Public/Private Storm Sewer ' 0 {;1crall plan layout of drainage facilifies (can be shown on street plan) showing casements 0 If separate instrument easements are needed -do not approve until we get them recorded 0 Plan and profile for all storm sewers 0 TXDOT permits needed? 0 Scaled and Signed 0 Engineers &timates Storm Sewer/Culverts 0 Pipe material (RCP -= storm. RCPorCMP = culvert) 0 Pipe sizes labeled (sec pg.47 DPDS) 0 Size/Location sufficient for overall City oeeds/masterplan 0 Depth (min cover) 0 Depth (excessive) 0 All utilities in plan Ir. profile w/si:o:s and type }Y Private vs. Public line distinction 0 Street grades-existing and proposed (centerline, right and left) shown in profile '·, g ~:=~~~:>shown JJeecf~-/-(? ~ ~~ ~ X/4 0-~~~ 0 Labels on all major items in plan 8r. profile 0 Located within drainage easement or right-of-way (specify width) (public only) 0 Easement width adequate per DPDS 0 Stationing shown 0 Outfall location (if open, is rip-rap needed per design calcs) ff Does it match drainage report (sizes, inlets, etc) 0 Hydraulic Grade Lioc (on plan or in drainage report) Junction Boxes/Manholes/Inlets 0 Lines end in JBIMH 0 JBIManholc spacing (sec pg 47 DPDS) 0 JBIManholes accessible from public ROW/easement 0 JB/Manholcs at change of alignment, grade or siz.c 0 Drops through inlet/manhole/1B (see pg 48 DPDS) 0 Cwb inlets shown and labeled (referenced to drainage report) J!a!il1 0 Standard Details noted oc included (referenced as city of CS Standard Details) 0 Details for all non-standard items (included/ok) (not on CS Std. detail sheet) 0 Ernbcdment details (specify option) 0 Trench safety if deeper than s• 0 Erosion control notes 0 Culverts (SE'I) 0 Inlet/1-Box or manhole details (manhole ~) 7ol'l2 Project Name: _________ _ Review Date:. __________ _ Reviewer. ___________ ~ Public/Private Storm Sewer (cont.) Channeb D Cross sections with side slopes -meets DPDS D CbanncJ Liner -per DPDS D Longitudinal slope (0.4% min.) D ·Rip Rap DC(.ded? 1kt!i!! D Standard Details noted or included (referenced as city of CS Standard Details) D Details for all non-standard items (include/ok) (not on CS Std. detail sheet) D Erosion control notes Detention System lf Side dopes I r;( Bouom slopes ~ Grading plan ~ Low flow fiumc ~ Outlet Structure shown -corresponds to drainage rcpon ~ Inlet Structure shown -corresponds to drainage report /ff Emergency spillway -corresponds to drainage repon I D Rip Rap if high velocities exist at inlet or outlet -length/width/size/details 0 Flowlines at inlet and outlet f Complies with drainage report Details D Standard Details noted or included (referenced as city of CS Standard Details) D Details for all non-standard items (included/ok) (not on CS Std. detail sheet) D Erosion control notes D Iol«_~ 0 Outlet structure The following items arc variances to the College Station drainage standards: · I ol12 Project Name: __________ _ Review Date:, __________ _ Reviewer: ___________ _ Drainage Reports Location ii' Primary drainage system identified ,..ia" Surrounding developments shown )4"' Local streets, drainage systems shown Description j[ Acreage of project ~ Land cover described ,E::( Primaly/sccondaly systems within property shown ~ Gcocral description Drainage Basins D R.cfcrcDocs to FIRMs if applicable if Secondary system tlow patterns and impact of development on existing system )1 Proposed pathways to Primary system shown or described Design Criteria (D Any deviation from standards being requested? · JJAL 0 Discussion of site constraints and capacities (streets, existing structures, etc.) 0 Discussion of any applicable previous drainage studies and how this plan will affect it rolo 'c riteria Ra.infall/runoff calculation method described and calculations provided ~ Detention discharge I storage calculation method I calculations "12( Storm CCCWTCDCC intervals used fa Discussion of other drainage facility design criteria used if not referenced in Standards Hydaullc Criteria ,Jr ldcDtify capacity of systems used ~ Spcc:ify velocities at critic:al points in system )?f Identify detention I retention outlet and routing 0 Discussion of other drainage facility design criteria used not referenced in Standards Drainage Facility Design % Discuss drainage pattcma I flows (pre vs . post) 0 Arc they draining water onto another property owner? -if so, is it where the water flowed before? and is it not more than what tlowed there before? and no faster than it flowed before? 0 i:>iscuss erosion control measures employed J! Discuss detention pond design (sideslope, low tlow channels, outlet works, freeboard, emergency spillway) 0 Discuss maintenance access and responsibilities Conclusions t Verify compliance with DPDS (signed and sealed certification) I ef Explain effectiveness of improvements with regard to controlling discharges of S -100 year storm by ;-a) Detaining b) Accommodating runoff in existing I proposed casements or ROW discharging into primal)' system c) Combination of a &. b ht'l2 Project Name: __________ _ Review Date: __________ _ Reviewer: ___________ _ Drainage Reports(cont) ~pendicg ,CJ/ R.cfcrcw::cs (all criteria and technical information used) .,!] Hydrologic computations 0 Land use assumptions for adjacent property 0 Minor/major storm runoff at specific points 0 Historidfully developed runoff specific points / 0 Hydrographs at critical points sf Hydraulic computations 0 Culvert capacities (headwater and tailwater assumptions) 0 Storm sewer capacities 0 Street capacities 0 Storm inlet capacities (inlet control rating) 0 Open channel design 0 Detention area I volume capacity I outlet capacity Attached Drawings ~ Location map with drainage patterns O Floodplain map if any ~Drainage plan with topo (~isting and proposed with anows if needed) A:'.! Details of outlet structures 10 oC12