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FolderDEVELOPMENT PERMIT PERMIT NO. 100061 DP-MAGNOLIA PLACE DORM (REG VILL) FOR AREAS OUTSIDE THE SPECIAL FLOOD HAZARD AREA RE : CHAPTER 13 OF THE COLLEGE STATION CITY CODE SITE LEGAL DESCRIPTION: Lot 1 &2 Block A Regency Village Subdivision DATE OF ISSUE: October 15, 2001 OWNER: Asset Campus Housing 8303 MoPac Suite A 101 _ Austin , TX 78759 SITE ADDRESS: 501 UNIVERSITY OAKS BLVD DRAINAGE BASIN: Wolf Pen VALID FOR 12 MONTHS CONTRACTOR: TYPE OF DEVELOPMENT: Full Development Permit SPECIAL CONDITIONS: All construction must be in compliance with the approved construction plans All trees must be barricaded, as shown on plans, prior to any construction. Any trees not barricaded will not count towards landscaping points. Barricades must be 1' per caliper inch of the tree diameter. The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design Criteria. If it is determined the prescribed erosion control measures are ineffective to retain all sediment onsite, it is the contractors responsibility to implement measures that will meet City, State and Federal requirements. 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 any disturbed vegetation be returned to its original condition, placement and state. The Owner and/or Contractor shall be responsible for any 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 deposited in city streets, or existing drainage facilities. I hereby grant this permit for development of an area outside 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 permit application for the above named project and all of the codes and ordinances of the City of College Station that apply. Date Date E r \. Notice of Intent (NOi) for Storm Water Discharges Associated with Construction Activity under the TPDES Construction General Perm it (TXR 150000) For help completing this application , read the TXR1 50000 NOi Instructions (TCEQ-20022-lnstructions). TCEQ Office Use Only TPDES Permit Number TXR 15 -NO GIN Number A. Construction Site Operator [!]New 0No Change Customer Reference Number: CN ____ -'-N=-/A:....:...... ___ _ Name: Spring Valley Construction Company, L. P. Mailing Address: 10950 Alder Circle City: Dallas State ..!LZip Code 75238 Country Mailing Information (if outside USA) Territory ________ Country Code: ________ Postal Code: __ _ Phone Number (214) 340-9800 Extension: _______ Fax Number: ____ ~(2_1_4~)_3_4_0_-9_1~0~0 ____ _ E-mail Address: __________________________________________ _ Type of Operator: D Individual D Sole Proprietorship - D.BA [!] Partnership D Corporation D Federal Government D State Government D County Government D City Government D Other ____________________ _ Independent Operator? [!]Yes D No Number of Employees D 0-20 [!] 21-100 D 101 -250 D 251-500 D 501 or higher Federal Tax ID: NJA State Franchise Tax ID Number: NJA DUNS Number: N/A B. Billing Address Name: Spring Valley Construction Company, L. P. Mailing Address: 10950 Alder Circle City Dallas State: TX Zip Code: 75238 Country Mailing Information (if outside USA) Territory: ________ Country Code: Postal Code: __ _ C. Project I Site Information [!]New 0No Change Regulated Entity Reference Number: RN ____ -"'Nl"'-'-'A'----- Name: Magnolia Student Apartments Mailing Address: 501 University Oaks Blvd. City: College Station State: TX Zip Code: 77840 Physical Address: 501 Universitv Oaks Blvd. City: College Station County: BRAZOS Zip Code: 77840 Location Access Description: 1/2 block west of Intersection of Stallings and University Oaks Latitude:~•~' .1Q.." N Longitude:~• ...ll._' £._" W Degrees (°), Minutes ('), and Seconds (") Latitude: Longitude: -Decimal Form Standard Industrial Classification (SIC} code: _jfil_ Also, describe the construction activity at this site (do not repeat the SIC code): construction of a three-story student housing facility Has a storm water pollution prevention plan been prepared as specified in the general permit (TXR150000)? 00 Yes D No Estimated area of land disturbed (to the nearest acre): 8 Is the project I site located on Indian Country Lands? D Yes 00 No Does this project I site discharge storm water into a municipal separate stonm sewer system (MS4)? 00 Yes Cl No If yes, provide the name of the MS4 operator:_C .... i~tv~of~C-"o""'ll~eg~e"'-"S-'-ta~t""io .... n~----------------------­ Provide the name or segment number of the water body that receives storm water from this project I site: Navasota River D. Contact -If the TCEQ needs additional information regarding this application, who should be contacted? Name: Steve Bruszer Title:_S_e_n_io_r_P_ro~j_e_ct_M_a_n_a~g_e_r ___________ _ Phone Number: (214) 340-9800 Extension 121 Fax Number: (214) 340-9100 E-mail Address: sbruszer@svcc1 .corn E. Payment lnfonnation -Check I Money Order Number: 1489 Name on Check I Money Order: Spring Valley Construction Co., F. Certification I certify under penalty of law that this document was prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel proper1y gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware there are significant penalties for submitting fal information, including the possibility of fine and imprisonment for knowing violations . Construction ite Operator Representa ive: Prefix: ael Middle:_L _______________ _ Last: Gra Title: ""P""'r""'e"'s""ld""e-'-n'""t-------~---------- Date: _ _-=;5J_,_jcl=+-( .,_.Joo<-=-~---- rm water program, please contact us at (512) 239-4671 . Individuals are entitled to request and review their personal info ation that the agency gathers on its forms. They may also have any errors in their information corrected. To review such information, contact us at (512) 239-3282. TCEQ-20022 (02/03) The completed NOi must be mailed to the following address. Use the attached document to submit the $100 application fee. Please note that the NOi and application fee are submitted separately to different addresses. Texas Commission on Environmental Quality Storm Water & General Permits Team; MC -228 P .0. Box 13087 Austin, Texas 78711-3087 Page 1 of 2 q-~1~61 Fl IOAM Magnolia Place Dormitory °'"Ltl Fire Flow Analysis September 2001 By /11,rrcHELL& /11,oRGAN, LLP Engineers & Constructors 511 University Drive, Suite 204 College Station, Texas 77840 Office (979) 260-6963 Fax (979) 260-3564 REVIEWED FOR ; co~-~PLIA~ SEP 2 2 20 COLLEGE STATIO ENGINEERING . w 0: ul ... 0: c ,_ ftl Q) ... ~.e --GI ,_ o ~ .c Q) :::E Ol u c: ..., t c: ·-RJ a:i ·c;, :::E a. • RJ .... ~ . .... . ~~ -8 c 0 .... a.. GI > Spencer Thompson City of College Station 1104 Texas Ave. South College Station, TX 77840 RE: Magnolia Place Dormitory Dear Mr. Thompson, September 19, 2001 Mitchell & Morgan, LLP has completed the Fire Flow Analysis for the Magnolia Place Dormitory Building. The building will be located between the existing Polo Club Apartments at 700 Dominik Drive and The Gables Apartments at 401 University Oaks Blvd between University Oaks and Dominik Drive. The front entrance of the dormitory will face University Oaks Blvd., while the rear will face Dominik Drive. The existing utilities consist of an 8" water line along Dominik Drive and an 8" water line along University Oaks Blvd. The two existing lines will be connected by an 8" water line running through the Magnolia Place Dormitory site . Domestic use flow was calculated by using an average of 115 gpd per capita. The Dormitory contains approximately 541 beds, giving a total flow of 43 gpm. Using the BOSS EMS water distribution modeling program, the pressure was found to be approximately 77.8 psi. The building will be partitioned into four separate sprinkler areas, with the maximum sprinkler area of27,706 fi:2. The fire flow was calculated by using the following formula obtained from the College Station Fire Development Fire Prevention Division Construction & Development Guide: Where: Fire Flow= 18 * C *(A) 0·5 C = Coefficient related to the type of construction 1.5 for wood frame construction 1. 0 for ordinary construction 0.9 for heavy timber type construction 0.8 for noncombustible construction 0.6 for fire-resistive construction A = The total floor area in square feet (including all stories, but excluding basements). '' ... .. .... ul 0: ul .. . c .... Q. ftJ a.J .. °' c: --... t Q1 .... o ~ .= a.J :E Cl u c: ... t c: ·-ltJ ai ·gi :E a.. • c: . .., ltJ .., .§~ 8 c e .., cu > The maximum zone area, zone 1 as seen on the attached exhibit, was used in calculating the fire flow for the dormitory. Fire Flow = 18* l .0*(75682) o.s = 5000 gpm The ISO allows for a reduction of 50% in the fire flow if the area contains a completely automatic sprinkler protection throughout the building. Since the Magnolia Place Dormitory will contain an automatic sprinkler system, the fire flow can be reduced by 50% to 2500 gpm. After the reduction the fire flow must then have an exposure protection value added to it. Distance to Property Line 0-10 ft 11-30ft 31-60ft 61-lOOft 101-150ft Percentage to be added 25% 20% 15% 10% 5% After distances from the dormitory to the property lines were measured, the sum of the percentages was 30%. Therefore, (2500 gpm * 0.3) + 2500 gpm = 3250 gpm A minimum pressure of20 psi is required to prevent the development of negative pressure in street mains. Adding the fire flow and the domestic flow results of a flow of3293 gpm. Using the BOSS EMS water distribution modeling program, the pressure under this fire flow was approximately 38.3 psi. The following table indicates the total flow for each zone. Refer to the attached diagram for zone location. Total Velocity Zone Area tt2 m (ft/s) 1 23586 2793 17.8 2 48885 2500 43 2543 16.2 3 48885 2500 43 2543 16.2 4 75682 3250 43 3293 21 .0 u.i 0:: u.i ... 0:: c .... la Q) ... ee --GI ,_ o ~ .c Q) :I: Ol u c: .. t:'. c: ·-m ai 'Ci :I: a. • m ""' 15 . ""' B ~ -·-8 c e ""' GI > Given the above analysis, the fire flow and domestic water requirements can be met for Magnolia Place Dormitory with the addition of our internal 8 inch waterline connected to the 8" lines on Dominik Drive and University Oaks Blvd. Mitchell & Morgan, LLP will be happy to answer any questions or comments p aining to the above-mentioned information. r1rr1rr.'" · Enclosures: if 1 ;',. •'''''''' i:·· -~ Of: "r. \ : A~··j/·~ .. ), q,:z1--0t ~~~n::Ml?~~) 1d·· 77689 Q/!} 11~""~f.91srE~~.·~~ -,''.Ss ••••••• ~v-\\~~~~-Analysis Results Fire Wall Zones Exhibit (Au noots) lfQ, 2-q'5 s~ /'IA-ft..-/ 01 7qq SF l}'t1 fl --7 2 i/I SF I fi'Df(., --'fi '; z~c;F (4U FllJO~) I to, z.q 6 ~r L_ ______ .... , ... ~e MA6tlclJA ~ 2025 75 024 50 48 51 2 83 /1216 12 (E>Citt61T 2) ****************************************************************** * * * * E P A N E T Hydraulic and Water Quality Analysis for Pipe Networks Version l.ld * * * * ****************************************************************** Map File .......................... DORM Number of Pipes . . . . . . . . . . . . . . . . . . . 15 Number of Nodes ................... 13 Number of Tanks ................... o Number of Pumps ................... o Number of Valves .................. o Headloss Formula .................. Hazen-Williams Hydraulic Timestep ................ 1.00 hrs Hydraulic Accuracy ................ 0.001000 Maximum Trials .................... 40 Quality Analysis .................. None Specific Gravity .................. 1.00 Kinematic Viscosity ............... l.lOe-005 sq ft/sec Chemical Diffusivity .............. l.30e-008 sq ft/sec Total Duration .................... 0.00 hrs Reporting Criteria: Nodes within Magnolia Place Dormitory vicinity Links within Magnolia Place Dormitory vicinity Node Results: Elev. Demand Grade Pressure Node ft gpm ft psi ------------------------------------------------------------------- 75 301.00 142.274 443.28 61.65 76 297.00 0.000 437.84 61.03 148 297.00 24.393 463.72 72.24 149 297 .00 126.419 433.40 59.10 150 296.00 0.000 441.81 63.18 151 293.00 77.259 434.96 61.51 152 286.00 138.052 410.33 53.87 583 281.00 42.781 466.62 80.43 712 277.00 26.644 462.36 80.32 1216 282.00 35.927 471.11 81.94 2023 300.50 0.000 416.05 50.07 2024 297.50 0.000 408.49 48.09 2025 300.50 3292.000 388.84 38.28 Link Results: ----------------------------------------------------------------------- Start End Diameter Flow Velocity Headloss Link Node Node in gpm fps /lOOOft ----------------------------------------------------------------------- 887 712 583 18.00 -4926.182 6.21 7.87 975 713 712 18.00 -4899.538 6.18 8.24 1077 76 75 6.00 -378 .533 4.30 17.78 1078 77 75 6.00 40.087 0.45 0.27 1080 149 76 8.00 -1277.923 8.16 51. 35 1081 150 76 8.00 899.390 5.74 23 .62 1166 148 641 8.00 -969.858 6.19 24.46 1168 150 148 8.00 -1507.413 9.62 57.25 1169 151 150 8.00 -608 .023 3.88 10.33 2003 683 2023 8.00 665.161 4.25 11. 78 2005 152 1001 6.00 -447 .486 5.08 22.96 2396 2023 149 8 .00 -1151.504 7 .35 32.50 2397 2024 151 8.00 -1165. 901 7 .44 33.81 2399 2023 2025 8 .00 1816.665 11 . 60 75.55 2400 2025 2024 8.00 -1475.335 9 .42 51.41 w ca: .. c ...... ftS ~ e ~ o ~ J:: en c: a:i ·ai • ltJ ""' ~ .~::E: c e cu > w ca: ~ 'ii ...... .c ~ ~~ ·-ltJ % a.. ..; 'ii 0 ""' Spencer Thompson City of College Station Development Services 1101 Texas Avenue College Station, TX 77840 Re: Magnolia Place Dormitory Drainage Analysis 81-l. I cf· Attached is a copy of a correction that we made to the Magnolia Place Dormitory Drainage Analysis. We found an error in the drainage report in that it did not reflect a change that was made to the drawings. The changes are as follows: • DA3-6 goes to JB2 not DA3-7 which affected the total CA of DA3-7 to JB2 • Because of the steep slope required for the JB2 to JB3 line as an 18"line, this line was changed to 24" to allow for a flatter slope Both of these items were changed prior to the approval of the plans and the drainage report was simply not changed to reflect this. This copy is for your records. If you have any questions please call. . ' " ~· ~ ., ,.. ... t ·~ r' ... ..: .. ·• •.' ... ....... "'• . ...lJ~.: .. ,. ' .. t·~ ~ c •r. ... , '~' .,.; . < I U I ~ :~ 0 ~ EXHIBIT C-3 PIPE SIZE CALCULATIONS MAGNOLIA PLACE PRIVATE DORM :<24" <24" # i# ;Ac. ,min ;yr 1cfs :cfs 1# jcfs :% i" jfps :• !min imin DA3-1 !DA3-2 0.2: 10.0. 10 1.6 ! 2.01 1 : -~ --·- DA3-2 .i-:!!:!!_ __ . 0.6 10.9. 10 ~:?i _ ~-~: 1 • DA3-3 1JB3 . ~.o[ !9 . .Q: 1 o~j 24 .81 31 .0i 1 ! DA3-~ __ -:JB1 ~-=:_0.7 ; ____ 11 .1 :J.~--__ 8.6J __ 10.?]_1·: DA3-5 \DA3-4 i O.~ ___ 10.0! 100 L ~l ---~~!_1__~ DA3-6 _iJB~ ; 0.6 ' _ 10.0;___~_Q_ ~ -. ..i·.~1 . ~.Q I .! .. i DA3-7 iJB2 .... 0.3: 10.0 I 10 ! 2.3, 2.9 ! 1 I DA3-s -l~~3 -·· 1.3f 1g::913·oc[r -_ _1?~?1 -?0.9 i 1 · -I ; ·-----J ... JB1 !]83--·--; -1.3. 19.7 ~ 1 ----~·--· -----· 11 .6 0 15.8i ---------=-J JB2 1JB3 i 0.8: 12.3 i 1 -------·· ----1 11 .31 0 I i 9.91 *Includes 25% Flow Increase for pipe sizes <27" dia. ••See Plan & Profile for pipe slope used (Pipe slope >or= Friction slope) 10/17/2001 0021-drainage.xls Exhibit C-3 DEVELOPMENT PERMIT ~-v PERMIT NO. 100061 DP-REGENCY VILLAGE SUBDIV LOT1 &2 BLK A COLLEGE STATION FOR AREAS OUTSIDE THE SPECIAL FLOOD HAZARD AREA RE: CHAPTER 13 OF THE COLLEGE STATION CITY CODE SITE LEGAL DESCRIPTION: REGENCY VILLAGE DATE OF ISSUE: SEPTEMBER 11, 2001 OWNER: ASSET CAMPUS HOUSING 3131 DE. 29TH STREET BRYAN , TX 77802 SITE ADDRESS: 331 DOMINIK DR DRAINAGE BASIN: VALID FOR 12 MONTHS CONTRACTOR: WESTCHASE CONSTRUCTION TYPE OF DEVELOPMENT: Clearing and grading permit. SPECIAL CONDITIONS: All construction must be in compliance with the approved construction plans All trees must be barricaded, as shown on plans, prior to any construction. Any trees not barricaded will not count towards landscaping points. Barricades must be 1' per caliper inch of the tree diameter. The Contractor shall take all necessary precautions to prevent silt and debris from leaving the immediate construction site in accordance with the approved erosion control plan as well as the City of College Station Drainage Policy and Design Criteria. If it is determined the prescribed erosion control measures are ineffective to retain all sediment onsite it is the contractors responsibility to implement measures that will meet City, State and Federal requirements. 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 any disturbed vegetation be returned to its original condition, placement and state. The Owner and/or Contractor shall be responsible for any 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 deposited in city streets, or existing drainage facilities. I hereby grant this permit for development of an area outside 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 permit application for the above named project and all of the codes and ordinances of the City of College Station that apply. Date I ' ul 0: ... c .... IQ Q1 e'E o ~ 2: en c: m·51 • ro ""' ffi IQ ~ u ·-c e G1 > ul 0: ... --G1 .... .c ~ ~~ ·-ro J: 0.. . ""' -8 ""' August 31, 2001 City of College Station Development Services 1101 Texas Avenue South College Station, TX 77840 Attn: Bridgette George Re: Rough Grading Permit for Asset Campus Dormitory Dear Bridgette: Attached, please find five copies of a rough grading and storm water pollution prevention plan along with an application for a "Rough Grading" permit for the Assett Campus Dormitory Project. If you have any questions or comments please 1 us know. Cc. File Al Crozier, Westchase Construction Steve Burch, ESG Architects Michael Peter, Asset Campus Housing ""'1».:1» .&.'"•··----DATE SUBMITrED: DEVELOPMENT PERMIT MINIMUM SUBMITTAL REQUIREMENTS / $100.00 Development Pennit Application Fee. 1--bt Afpll;cJole _J{_ Drainage and erosion control plan, with supporting D~ort two (2) copies each. Notice of Intent (N.0.1.) if disturbed area is greater than 5 acres. LEGAL DESCRIPTION Lot I * l MA '1~k~ Vi l~.e_, 5Abd w\sicr. APPLICANT (Primary Contact for the roject): Name µ(+ikei\ ~ StreetAddress 6\\ L)~ ~t-t-JK Sk 'Zg)4 City CoU~ ~~ State TX Zip Code 1+Ji4o E-Mail Adru:ess \f@M·l+Jt.eUOMJ.nco!QOM. .~M Phone Number q 1'1•1Joo · lf1{o ?> Fax Number _Cl_1_q_4 -'-1JJJ~O-· ...;;;..~-=SA=--------- PROPER1Y OWNER'S INFORMATION: Name f;D~C&_~-IA.S----~--&~~---------,:---~--,.--~~-------­ StreetAddress 3\.:3 \ E·. G~+itt+het, -~J08ty __,€;*'--v_y'---QYl___._,_~---- State T >( Zip Code ~1-JCQCO-E-Mail Address ~@asSe tc~ i-LS • C-OfY\ Phone Number Fax Number ----------------- C lllTE CT OR ENGINEER'S INFORMATION: Name 'ZMRl (!,$ ~~~ StreetAddress City ------------ State ____ Zip Code _____ E-Mail Address ------------ Phone Number Fax Number ----------------' ---------------- Application is hereby made for the following development specific site/waterway alterations: ~QJ\.L- ACKNOWLEDGMENTS: I, V!AmUv µ~ . ~/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 s . condition of approval of this permit application, I agree to construct the improvements proposed in this application rding to uments and the requirements of Chapter 13 of the College Station City Code. DEVELOPMENT PERMIT nPF.l>UIT ~ ~n.sl'Qq Contractor lof2 . l CERTIFICATIONS: (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 designated to prevent damage to the structure or its contents as a result of flooding from the 100 year F.ngineer Date B. I. certify that the finished floor elevation of the lowest floor, including any basement, of any residential structure, pr sed as part of this application is at or above the base flood elevation established in the latest Federal Insurance Administrati Flood Ha2:ard Study and maps, as amended. Engineer N J-W\l C. I, certify that the rations or development covered by this pennit shall not diminish the flood-carrying capacjty of the waterway adjoining crossing this permitted site and that such alterations or development are consistent with requirements of the City of Coll Station City Code, Chapter 13 concerning encroachments of floodways and of tloodway tiinges. Engineer Date I, do certify that the proposed alterations not raise the level of the 100 year _ £food above elevation established in the latest Federal Insurance Administration Flood HB.2:ard 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 fur the above named project. All of the applicable codes and ordinances of the City of College Station shall apply. DEVELOPMENT PERMIT DPERMrr.DOC 3/'W99 2of2 . ' . . .. . ' l 551 Uf1i1JeJS~ OlW Bl~ DEVELOPMENT PERMIT · 'it/~T Jo I ;t/fl MINIMUM SUBMI'ITAL REQUIREMENTS I 'olo~ $100.00 Development Permit Application Fee. tJot .6ffhc ""I_ Drainage and erosion control plan, with supporting D~ort two (2) copies each. Notice of Intent (N.0.1.) if disturbed area is greater than 5 acres. LEGAL oEsCRIPTioN Ld--1 i 2-M A '1~ Vi [~fl, 5JW.Wisio- APPLICANT (Primary Contact for the roject): Name M,l'hkel\ ~ Street Address '5\\ l)~ u-Si,tA 1:)-Sk Zcl City Cd1~ .~ State TX Zip Code 11 &>4o E-Mail Address \f@ Ml+-CLUi~~ ~OM. • ~M Phone Number q l °t · 1.J.oO · tfHo ?> Fax Number _tl_/tt_·_'2h ____ 0_·_3 ___ :M-~-------- PROPER1Y OWNER'S INFORMATION: N~~ lp~C~--l.l.S-r--~-=-Sl~~--.-. ----=-------=---=------------~ Street Address B \ s \ f). G,sfi§:+h etl-, -~J08ty 6 vy·o...J0 ' State T >( Zip Code ~1-J'O~ E-Mail Address Mpekt@asSe tC~i,Ls. Ce fV\ Phone Number Fax Number ---------------- C lilTE CT OR ENGINEER'S INFORMATION: N~e ~Ov$ ~W Street Address City ------------ State Zip Code _____ E-Mail Address ------------ Phone Number Fax Number ------------------------- Application is hereby made for the following development specific site/waterway alterations: KJ())\JL.- ACKNOWLEDGMENTS: I, Vwwu.JA. ~ , ~rlowner, hereby acknowledge or affirm 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 s dards. condition of approval of this permit application, I agree to construct the improvements proposed in this application rding to thes d uments and the requirements of Chapter 13 of the College Station City Code. /""-"'~ ~ Contractor DEVELOPMENT PERMIT 1 of2 DPERMIT.DOC 3fJ.4/99 ,. i' [, ,., ·; '. ,. ... _., CERTIFICATIONS: (for proposed alterations within designated flood haz.ard areas.) A. --~--------certify that any nonresidential structure on or proposed to be on this site as part designated to prevent damage to the structure or its contents as a result of flooding from the 100 year Engineer Date B. I, certify that the finished floor elevation of the lowest floor, including any basement, of any residential structure, pr osed as part of this application is at or above the base flood elevation established in the latest Federal Insurance Administrati Flood Hazard Study and maps, as amended. Engineer C. I, certify that the rations or development covered by this pennit shall not diminish the flood-carrying capacjty of the waterway adjoining crossing this permitted site and that such alterations or development are consistent with requirements of the City of Coll Station City Code, Chapter 13 concerning encroachments of floodways and of floodway fringes. Engineer Date I, do certify that the proposed alterations not raise the level of the 100 year . ... Jood above elevation established in the latest Federal Insurance Administration Flood d 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 3/24/99 2of2 QEC-20-2002 FRI 09:06 AM C.S. PUBLIC WORKS ~-.L-"-f_J.t."F r.uu~ J.O; ,0 C/\A ..__......,___,_ ... ..-. ....... -. FAX NO. 9797643489 LE'M'EROFCOMPLETION CllY ENGINEER CITY OF COLLEGE STATION COLLEGE STATION, TEXAS P~ar Slr. DATE: 12/19/02 RE~ COMPJ,ETION OF Magnolia Student Housing 501 Univer~j1Y.__Qaks. Colleoe Stat ion.., TX 77840 The purpose of our letter is to request that the following listed improvements be approved and accepted as being constructed under ctty inspccUon and completed according to pl<lns and spectfi.cattons as approved and required by the City of College Station, Tex.as. TIUs approval and acceptance by the Ctty js requested in order that we may finallz..e any $Ub~contTacts and to affinn their warranty on the work. This <.ipproval and acceptance by the City of the improvements Usted bt'!low does hereby void the Jetter of guarantee:: for the listed lmprovemcnts on the above referenced project. The one year warrant.y 1.s nereby affirmed and agreert to by Spring Valley Constr:~ction Company,ahdr. by their SUb·COnllactors as indicated by signatures below. WORK COMPLETEU Water Lines SP.wer Infrastructur~ DATE JJ/.M/o.Zt- J1/21Ja2_ ' I Cambridge Student Housing Development, Owner: ~~~e>t. Plus ....... L.P. Address: 1800 Bering H320 Houston, TX 77057 contractor: ~i_,r.!9 ..• Ya1 1 ey Cof1s true ti on . Company, L.P. Address: 10950 Alder Circle Dallas, TX 75238 Magnolia Place Dormitory Drainage Analysis September 2001 By /lfncHELL&/lf ORGAN, LLP Engineers & Constructors 511 University Drive, Suite 204 College Station, Texas 77840 Office (979) 260-6963 Fax (979) 260-3564 REVIEWED FOR i COMPLIA~ SEP 2 2 20'0t\) COLLEGE STATION ENGINEERING CERTIFICATION I hereby certify that this report for the drainage design for the Magnolia Place Dormitory 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. itchell, P.E. of Texas No. 80649 MAGNOLIA PLACE D ORMITORY DRAINAGE ANALYSIS INTRODUCTION This storm drainage report is written to document and analyze the necessary drainage infrastructure for the Magnolia Place Dormitory project. This project is located in College Station between Dominik Drive and University Oaks Boulevard. It will be constructed adjacent to two existing multi-family projects, namely, the Polo Club Apartments to the east and the Gable Apartments to the west. The parameters used for design and analysis of pre-vs. post-developed conditions 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 This project is located on Lots 1 & 2, Block A of the Regency Village Subdivision. The project consists of a three story private dormitory with an associated parking surface parking lot. Because of the concerns with the neighboring single-family residential area, the dormitory is oriented on the property such that it takes its major access from University Oaks Boulevard. This should help minimize the amount of traffic using Dominik Drive. Because of the project size, site size, the amount of required parking and the desire to keep detention out of the parking lot, the project was designed with an underground detention system. This system consists of a series of 66-inch corrugated metal pipes, which provide storage for the 5-year through 100-year storms. This system is located on the most downstream portion of the site, which is the southeast comer of the property. From this underground detention system, the discharge is conveyed through a 15-inch PVC discharge pipe. This discharge pipe is constructed from the site down the University Oaks right-of-way to an existing storm sewer junction box, which is located in the center of the University Oaks Street near the intersection with Stallings Drive. It increases in size from the 15-inch PVC to a 24-inch RCP shortly after 2 Magnolia Place Dormitory leaving the underground detention system in order to eliminate head losses associated with pressure flow. The 15-inch pipe is designed to act only as an orifice for the control structure and will not be the primary conduit. PRIMARY DRAINAGE BASIN DESCRIPTION As seen on Exhibit A, this property is located within the Wolf Pen Creek Drainage Basin, with a minor portion of the site contributing to Wolf Pen Creek Tributary "B'' and the majority of the site contributes to Tributary "A" of Wolf Pen Creek. Tributary "A" is located within the City of College Station's Oaks Park at the intersection of University Oaks and Stallings Drive. This exhibit also illustrates that no portion of the site lies within the 100-year floodplain per the Federal Emergency Management Agency Flood Insurance Rate Map Panel 144, with an effective date of July 1992. DRAINAGE DESIGN CRITERIA All drainage design is in accordance with the City of College Station DPDS. As such: • The design rainstorm events used are the 5 through 100-year events to analyze the effectiveness of the detention pond design; • Because the site size is less than 50 acres, flow calculations are based on the Rational Method, with a minimum time of concentration of 10 minutes; and • Because the site size is less than 50 acres, the hydrograph methodology used is the triangular approximation method. DRAINAGE FACILITY DESIGN Predevelopment Drainage Patterns The site is currently vacant and the pre-developed runoff patterns contribute to both University Oaks Boulevard and Dominik Drive. Approximately .95 acres flow to the northwest along Dominik Drive, while the majority of the site (7.15 acres) flows to the southeast toward University Oaks Boulevard. Because of the location of this property on a ridge between two creek tributaries, there are no offsite areas that flow through the site. The pre-developed drainage area and runoff patterns can be seen on Exhibit B-1. 3 Magnolia Place Dormitory Predevelopment Drainage Patterns The post-developed drainage areas and runoff patterns are illustrated on Exhibit B-2. As seen on the exhibit, Drainage Areas 1 & 2 have been reduced in size. This size reduction has been accomplished to account for the increased impervious cover and to assure that the undetained flow from these two areas matches the pre-developed rate of runoff. As seen on Exhibit C-1 the pre-vs. post-developed runoff for each of these areas has been decreased. As a result, Drainage Area 3 increased in size from 5.45 acres to 7.21 acres. The pre-vs. post-developed runoff values for drainage areas 1 & 2 are as follows: Peak Discharge From Magnolia Place Dormitory Location 5-Year(cfs) 10-Year(cfs) 25-Y ear( cfs) 50-Year(cfs) 100-Year( cfs) Pre-Developed 5.2 5.9 6.7 7.6 8.5 (Area 1) Post-Developed 2.6 2.9 3.3 3.7 4.2 (Area 1) Pre-Developed 2.9 3.3 3.7 4.2 4.7 (Area 2) Post-Developed 2.5 2.9 3.3 3.7 4.1 (Area 2) Underground Detention Facility The underground detention facility consists of a network of fourteen 66-inch corrugated metal pipes connected at the east end of the property by a series of manifolds joined together with coupling bands. In addition there is a 24" diameter equalizer running through the middle of the pipes that aids in distributing the stormwater. Each 66" CMP is 157 feet in length creating a total storage volume, neglecting the equalizer volume, of 4 Magnolia Place Dormitory approximately 54800 cu-ft. This volume is well in excess of the amount required for the 100-year storm but required in order to attenuate lesser storms properly. As specified earlier, the event flow calculations were done using the rational method and the hydrographs were completed using the triangle approximation method. The volumes for each storm was calculated by overlaying the pre-development and post-development hydrographs, and then taking the difference in the areas up to the point of recession. This was repeated for each of the storms. The 10-year and 100-year calculations are available as part of Exhibit D. The controlling structure in the underground detention system is the 15-inch PVC pipe connected to the junction box at the southeast end of the property. The flow through the pipe was calculated using the orifice equation. Despite being sized to handle a 100-year event, however, as noted above, storage has been added to the system to handle lesser storms. CONCLUSION The improvements associated with the Magnolia Place Dormitory improvements effectively control the runoff to the two Wolf Pen Tributaries. Although the calculations do not include routing the hydrographs through the underground detention system, the methodology used to calculate the peak discharge from the pre-vs. post-developed scenario and assuring that the underground volume is sufficient to handle the difference between these hydrographs is conservative. The discharge pipe size calculations were based upon the 100-year event, given the maximum ponded depth (head) on the discharge pipe. Subsequently all storm events (5-year through 100-year) were checked to assure that the volume provided was adequate. The underground detention pond performs satisfactorily for all storm events. 5 Magnolia Place Dormitory ,, ··,, ·" .. ·"-, (a FIRM FLO OD INSURANCE RATE MAP BRAZOS COUNTY, ................ TEXAS AND INCORPORATED AREAS PANEL 144 OF 250 (SEE M AP INDEX FOR PA NELS N OT PRINTED) CONTAINS: COMMUNITY BRYAN, CITY OF COLLEGE STAllOM. CITY Of 480082 0144 480083 0 I 44 c c Nolicc lo User: The MAP NUMBER shown holov1 should be usod when 11lncing 111np order.; Ibo COMMUNITY NUMBER shown nbovc shuulol he used on insnrancc applicalions lor lho subjecl communlly. AP NUMBER 48041 C0144 C EFFECTI VE DATE: JULY 2, 1992 Federal Emergency Management AgencJ L-----------. - E XH I BI T A < s: s: w 0 0 0 a: w _J _J < < 0.. u.. u.. w w 0 I-0 0 (!) a: _J z < z z < w _J w u < :I: < < _J > w :E _J _J I-_J z < W< > w < a: (!) a: _J <( < I-cw > I-Wz w _J a: 0 z a: a: < 0 >w >< 0 I-::::> < (!) 0.. I-0 _J 0 u.. NO. AC. 0.4 0.65 0.93 ft. ft. 1E 1.70 1.70 0.00 0.00 0.68 514.0 5.0 2E 0.95 0.95 0.00 0.00 0.38 142.0 2.0 3E 5.45 5.45 0.00 0.00 2.18 539.0 5.5 DA1-1 0.36 0.00 0.00 0.36 0.33 0.0 0.0 DA2-1 0.36 0.00 0.00 0.36 0.33 0.0 0.0 DA3-1 0.20 0.00 0.00 0.20 0.19 0.0 0.0 DA3-2 0.47 0.00 0.00 0.47 0.44 0.0 0.0 DA3-3 2.13 0.00 0.00 2.13 1.98 0.0 0.0 DA3-4 0.89 0.89 0.00 0.00 0.36 0.0 0.0 DA3-5 0.89 0.89 0.00 0.00 0.36 0.0 0.0 DA3-6 0.60 0.00 0.00 0.60 0.56 0.0 0.0 DA3-7 0.29 0.00 0.00 0.29 0.27 0.0 0.0 DA3-8 1.44 0.00 0.00 1.44 1.33 0.0 0.0 DA3-9 0.30 0.00 0.00 0.30 0.27 0.0 0.0 EXHIBIT C-1 Rational Formula Drainage Area Calculations MAGNOLIA PLACE PRIVATE DORM s: s: 0 0 _J _J u.. u.. >-a: :I: a: I-u w I-w I: (!) I: :l 0 ::::> z _J ::::> < w (!) ~ (!) u.. > ft. ft. ft/s 0.0 0.0 0.7 0.0 0.0 0.8 0.0 0.0 0.7 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 0.0 0.0 10.4 u I-u I-.2 w ra en N IO u ::::> ~ 0 !!? 0 min min In/Hr cfs In/Hr cfs 12.3 10.0 2.8 10.0 12.6 21.5 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 0.0 10.0 l=Yl-llQIT I""'_ 1 6.33 4.3 7.7 5.2 6.33 2.4 7.7 2.9 4.25 9.3 5.3 11.5 6.33 2.1 7.7 2.6 6.33 2.1 7.7 2.5 6.33 1.2 7.7 1.4 6.33 2.8 7.7 3.3 6.33 12.5 7.7 15.2 6.33 2.3 7.7 2.7 6.33 2.3 7.7 2.7 6.33 3.5 7.7 4.3 6.33 1.7 7.7 2.1 6.33 8.4 7.7 10.3 6.33 1.7 7.7 2.1 Pre Development Flow 1 Post Development Flow 1 Flow Increase Pre Development Flow 2 Post Development Flow 2 Flow Increase 0 = In/Hr 8.6 8.6 6.0 8.6 8.6 8.6 8.6 8.6 8.6 8.6 8.6 8.6 8.6 8.6 0 .... 0 cfs 5.9 3.3 13.0 2.9 2.9 1.6 3.8 17.1 3.1 3.1 4.8 2.3 11.5 2.4 49.7 5.9 2.9 -3.0 3.3 2.9 -0.4 IO ~ In/Hr 9.9 9.9 6.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 IO 0 N 0 IO 0 !!? 0 cfs In/Hr cfs 6.7 11.1 7.6 3.7 11.1 4.2 15.0 7.8 17.0 3.3 11.1 3.7 3.3 11.1 3.7 1.9 11.1 2.1 4.3 11.1 4.9 19.5 11.1 22.1 3.5 11.1 4.0 3.5 11.1 4.0 5.5 11.1 6.2 2.7 11.1 3.0 13.2 11.1 14.9 2.7 11.1 3.1 6.7 7.6 3.3 3.7 -3.4 -3.9 3.7 4.2 3.3 3.7 -0.5 -0.5 0 0 = In/Hr 12.5 12.5 8.8 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 12.5 0 0 0 cfs 8.5 4.7 19.2 4.2 4.1 2.4 5.5 24.8 4.5 4.5 7.0 3.4 16.7 3.4 72.1 8.5 4.2 -4.3 4.7 4.1 -0.6 9/21/2001 Copy of 0021-drainageJOEL.xls 0 ...... ~ i.. Q.l -~ Q.l Q.l = i.. ... .... ~ . ~ 0 <o ...... Q.l ~ zZ en ..... 0 ~ i.. .... < = i.. ~~ ~ -.... ~ ~ u ...... i.. 0 Q < Q 0 ~ _.__ + cfs DA3-l j-__!__i__ 0.0 1.6 1?A3-2 j 3.8 _ ~ 3.8 DA3-3 24.8 0.0 24.8 DA3-4 4.5 0.0 4.5 -DA3-5 4.5 0.0 4.5 ---DA3-6 4.8 0.0 4.8 -DA3-7 2.3 0.0 2.3 ---DA3-8 16.7 0.0 16.7 EXHIBIT C-2 INLET COMPUTATIONS MAGNOLIA PLACE PRIVATE DORM ~ J 'e Q.l i.. 'e Q.l -d ·;;: ~ C' 0 Q.l i.. ~ ~ < ~ DESCRIPTION J J u -T Curb Inlet cfs ft ft -t - Prop. Grate Inlet ~---· Prop. Grate Inlet + Curb Inlet 2.33 10.64 IO Prop. Grate Inlet --Prop. Grate Inlet ---Prop. Grate Inlet -Prop. Grate Inlet Curb Inlet 2.33 7.17 10 i.. .c 'e 'e ~ Q.l Q.l ...... i.. Q.l ... 0. 00 . ... 'e 0 Q.l = . ... Q ... i.. C' 0 ..... Q.l Q.l i.. i.. 'e ~ ~ ~ i.. Q.l ~ 'e ~ ~ ~ u = < Q.l Q.l 0 i.. i.. 0 ~ u < < Grate Inlet -I ' ft cfs sq-ft I sq-ft 0.5 -2.8 .l 0.58 I l.86 0.5 2.8 1.34 l.86 ' 0.5 2.8 0.5 2.8 0.5 2.8 0.5 2.8 -- l.59 l.86 -!.. l.60 l.86 l.72 l.86 0.83 l.86 9/21/2001 Copy of 0021-drainageJOEL.xls Exhibit C-2 # DA3-1 DA3-2 ~~ DA3-2 JB1 DA3-3 J.!§_3 DA3-4 JB1 DA3-5 D A3-4 DA3-6 DA3-7 DA3-7 JB2 DA3-8 jJB3 JB1 1JB3 JB2 JB3 Ac. 0.2 I 0.6 2.0 0.7 0.4~ 0.6 0.8 1.3 I 1.3 0.8 min EXHIBIT C-3 PIPE SIZE CALCULATIONS MAGNOLIA PLACE PRIVATE DORM yr lcfs 10.0, 10 I 10.9 10 ' J 10.0 100 ' 11 .1 100 10.0 100 10.0 10 11.3+ 10 . 10.01-100 11 .6 0 I 11 At 0 1.6 2.0 1 2.0 j 5.2 6.5 I 1 "-6.5~ 24 .8 31 .0 1 ' 8.6 10.7j 1 I 4.5 5.6 1 4.8 6.0 1 6.8 8.5 1 16.7 20 .9 1 I I ' 15.8J 19.7 1 9.8 12.3 1 31.0 10.7 5.6' 6.0 8.5 20.9 19.7, 12.3 O/o -!< -!< ~ c. 0 00 = 0 .... -c.> .... i. ~ 0.37 0.44 2.16 1.20 0.33 0.38 1 0.75 0.98 0.87 1.57 *Includes 25% Flow Increase for pipe sizes <27" dia. ••See Plan & Profile for pipe slope used (Pipe slope >or= Friction slope) I ~ =: E "C ~ ~ = e,:, ~ ~ .J z > @) ~ ~ e J c.> >-+-~ ~ ~ fps I• min lmin 12, 2.61 142 . 0.92 10.92 18 3.7 149 0.68 11 .60 24 9.9_[_ 20 0.03 10.03 18 6.1j 140 0.39 11.48 18 3.2 208 1.10 11 .10 I---3.4 274 1.34 11 .34 18 18 4.81 32 0.11 11.45 24' 6.6 150 0.38 10.38 241 6.J 287~ 0.76 l 12.36 18 6]-f 353 0.85 12.30 9/21/2001 Copy of 0021-drainageJOEL.xls Exhibit C-3 6 Appendix A Detention Volume Calculations Magnolia Place Dormitory 72.1 19.2 0021 -MAGNOLIA PLACE /QO -YE-AR E.VEA!f 10 21.5 JO TIME (MIN) rt2 'Ptec ::-( er. ;;> c FS 61. 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