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NOI TCEQ Office Use Only Permit No.: RN: CN: Region: rilli 1640. irlimmeillel TCEC1 Notice of Intent (NOI) for Stormwater Discharges Associated with Construction Activity under TPDES g General Permit (TXRi50000) IMPORTANT: • Use the INSTRUCTIONS to fill out each question in this form. • Use the CHECKLIST to make certain all you filled out all required information. Incomplete applications WILL delay approval or result in automatic denial. • Once processed your permit can be viewed at: http://www2.tceq.texas.gov/wq dpa/index.cfm ePERMITS: Sign up now for online NOI: https://www3.tceq.texas.govisteers/index.cfm Pay a $225 reduced application fee by using ePermits. APPLICATION FEE: • You must pay the$325 Application Fee to TCEQ for the paper application to be complete. • Payment and NOI must be mailed to separate addresses. • Did you know you can pay on line? • Go to https://www3.tceq.texas.govjepay/index.efm • Select Fee Type: GENERAL PERMIT CONSTRUCTION STORM WATER DISCHARGE NOI APPLICATION • Provide your payment information below,for verification of payment: 0 Mailed Check/Money Order No.: Name Printed on Check: 0 EPAY Voucher No.: Is the Payment Voucher copy attached? 0 Yes RENEWAL: Is this NOI a Renewal of an existing General Permit Authorization? (Note:A permit cannot be renewed after June 3, 2013.) 0 Yes The Permit number is:TXR15 (If a permit number is not provided, a new number will be assigned.) O No a) If the applicant is currently a customer with TCEQ,what is the Customer Number(CN) issued to this entity? You may search for your CN at: http://www12.tceq.texas.gov/crpub/index.cfm?fuseaction=cust.CustSearch CN TCEQ 20022(03/05/2013) Page 1 b) What is the Legal Name of the entity(applicant)applying for this permit? Oldham Goodwin Group,LLC (The legal name must be spelled exactly as filed with the Texas Secretary of State,County,or in the legal document forming the entity.) c) What is the name and title of the person signing the application? The person must be an executive official meeting signatory requirements in TAC 305.44(a). Prefix(Mr. Ms.Miss): Mr. First/Last Name: Chris Rhodes Title: VP-Construction Management Suffix: Credential: d) What is the Operator Contact's(Responsible Authority)contact information and mailing address as recognized by the US Postal Service(USPS)? You may verify the address at: http://zip4.usps.com/zip4/welcomejsp Phone#:(979)268-2000 ext: Fax#: (979) 846-7o20 E-mail: chris@oldhamgoodwin.corn Mailing Address:2800 South Texas Avenue,Ste.401 Internal Routing(Mail Code,Etc.): City: Bryan State:TX ZIP Code:77802 If outside USA: Territory: Country Code: Postal Code: e) Indicate the type of Customer(The instructions will help determine your customer type): ❑Individual El Limited Partnership ❑Sole Proprietorship-DBA ❑Joint Venture 0 General Partnershi ❑Trust Partnership 0 Corporation 0 Estate 0 Federal Government ❑State Government 0 County Government 0 City Government 0 Other Government f) Independent Operator? i Yes (If governmental entity,subsidiary,or part of a larger corporation, check"No".) g) Number of Employees: 00-20; 021-100; 0101-250 251-500; ❑ or ❑501 or higher h) Customer Business Tax and Filing Numbers: (REQUIRED for Corporations and Limited Partnerships. Not Required for Individuals, Government,or Sole Proprietors) State Franchise Tax ID Number: Federal Tax ID: Texas Secretary of State Charter(filing)Number: DUNS Number(if known): If TCEQ needs additional information regarding this application,who should be contacted? Is the application contact the same as the applicant identified above? 0 Yes,go to Section 3). 0 No, complete section below. Prefix(Mr. Ms.Miss):Mr. First/Last Name: Rabon Metcalf Title: Suffix: PE TCEQ 20022(03/05/2013) Credential: Page 2 Organization Name: RME Consulting Engineers Phone No.: (979)764-0704 ext: Fax Number:(979)764-0704 E-mail: ration@rmengineer.com Mailing Address: PO Box 9253 Internal Routing(Mail Code,Etc.): City: College Station State:TX ZIP Code:77842 Mailing Information if outside USA: Territory: Country Code: Postal Code: 3) REGULATED FN'ITFY(RE) INFORMATION ON PROJECT OR SITE If the site of your business is part of a larger business site or if other businesses were located at this site before yours,a Regulated Entity Number(RN)may already be assigned for the larger site. Use the RN assigned for the larger site. Search TCEQ's Central Registry to see if the larger site may already be registered as a regulated site at: http://www12.tceq.texas.gov/crpubjindex.cfm?fuseaction=regent.RNSearch. If the site is found,provide the assigned Regulated Entity Reference Number and provide the information for the site to be authorized through this application below. The site information for this authorization may vary from the larger site information. a) TCEQ issued RE Reference Number(RN): RN b) Name of project or site(the name known by the community where located): Creek Meadows-Section 3, Phase Three c) In your own words,briefly describe the primary business of the Regulated Entity: (Do not repeat the SIC and NAICS code): Urban residential subdivision development d) County(or counties if> 1) Brazos e) Latitude: 30°31'36.15"N Longitude: 96°17'30,34"W 0 Does the site have a physical address? ❑Yes,complete Section A for a physical address. Q No,complete Section B for site location information. Section A: Enter the physical address for the site. Verify the address with USPS. If the address is not recognized as a delivery address,provide the address as identified for overnight mail delivery, 911 emergency or other online map tools to confirm an address. Physical Address of Project or Site: Street Number: Street Name: City: State: ZIP Code: TCEQ 20022(03/05/2013) Page 3 Section B: Enter the site location information. If no physical address(Street Number&Street Name),provide a written location access description to the site. (Ex.: located 2 miles west from intersection of Hwy 290&IH35 accessible on Hwy 290 South) On the north side of Greens Prairie Trail and approximately 910 L.F. NW of its intersection with Royder Road. City where the site is located or,if not in a city,what is the nearest city: College Station State: Texas ZIP Code where the site is located: 77845 a) Is the project/site located on Indian Country Lands? 0 Yes-If the answer is Yes,you must obtain authorization through EPA,Region 6. El No b) Is your construction activity associated with a facility that,when completed,would be associated with the exploration,development,or production of oil or gas or geothermal resources? 0 Yes-If the answer is Yes,you may be under jurisdiction of the Railroad Commission of Texas and may need to obtain authorization through EPA,Region 6. No c) What is the Primary Standard Industrial Classification (SIC)Code that best describes the construction activity being conducted at the site? Primary SIC Code: 1521 d) If applicable,what is the Secondary SIC Code(s): e) What is the total number of acres disturbed? 5 0 Is the project site part of a larger common plan of development or sale? 0 Yes-If the answer is Yes,the total number of acres disturbed can be less than 5 acres. No -If the answer is No,the total number of acres disturbed must be 5 or more. If the total number of acres disturbed is less than 5 then the project site does not qualify for coverage through this Notice of Intent. Coverage will be denied. See the requirements in the general permit for small construction sites. g) What is the name of the first water body(s)to receive the stormwater runoff or potential runoff from the site? Peach Creek Tributary 18 h) What is the segment number(s)of the classified water body(s)that the discharge will eventually reach? 1242 TCEQ 20022(03/05/2013) Page 4 i) Is the discharge into an MS4? ❑■ Yes-If the answer is Yes,provide the name of the MS4 operator below. ❑ No If Yes,provide the name of the MS4 operator: City of College Station Note: The general permit requires you to send a copy of the NOI to the MS4 operator. j) Are any of the surface water bodies receiving discharges from the construction site on the latest EPA-approved CWA 3o3(d)List of impaired waters? ❑ Yes-If the answer is Yes,provide the name(s)of the impaired water body(s)below. 0 No If Yes,provide the name(s)of the impaired water body(s): k) Is the discharge or potential discharge within the Recharge Zone,Contributing Zone, or Contributing Zone within the Transition Zone of the Edwards Aquifer as defined in 3o TAC Chapter 213? ❑ Yes-If the answer is Yes,complete certification below by checking"Yes." 0 No I certify that a copy of the TCEQ approved Plan required by the Edwards Aquifer Rule (3o TAC Chapter 213)is either included or referenced in the Stormwater Pollution Prevention Plan. 0 Yes TCEQ 20022(03/05/2013) Page 5 ,) CERTIFICATION Check Yes to the certifications below. Failure to indicate Yes to ALL items may result in denial of coverage under the general permit. a) I certify that I have obtained a copy and understand the terms and conditions of the Construction General Permit(TXR150000). []Yes b) I certify that the full legal name of the entity applying for this permit has been provided and is legally authorized to do business in Texas. DYes c) I understand that a Notice of Termination(NOT)must be submitted when this authorization is no longer needed. 0 Yes d) I certify that a Stormwater Pollution Prevention Plan has been developed,will be implemented prior to construction and to the best of my knowledge and belief is compliant with any applicable local sediment and erosion control plans,as required in the general permit TXR150000. Note: For multiple operators who prepare a shared SWP3,the confirmation of an operator maybe limited to its obligations under the SWP3 provided all obligations are confirmed by at least one operator. Di Yes Operator Certification: I, Chris Rhodes VP-Construction Management Typed or printed name Title certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly 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 false information,including the possibility of fine and imprisonment for knowing violations. I further certify that I am authorized under 3o Texas Administrative Code 305.44 to sign and submit this document,and can provide documentation in proof of such authorization upon request. Signature: K:41`, Ph1U Date: V3//it (Use blue ink) TCEQ 20022(03/05/2013) Page 6 =UMW "-M11111111111111111111. -'it fi!' INF• • CONSTRUCTION SITE NOTICE FOR THE Texas Commission on Environmental Quality(TCEQ) Storm Water Program TPDES GENERAL PERMIT TXR150000 The following information is posted in compliance with Part II.D.2. of the TCEQ General Permit Number TXR150000 for discharges of storm water runoff from construction sites. Additional information regarding the TCEQ storm water permit program may be found on the internet at: http://www.tceq.state.tx.us/permitting/water quality/stormwater/TXR15 AIR.htm1 Contact Name and Phone Number: Chris Rhodes (979)260-2800 Project Description: Creek Meadows-Section 3, Phase Three Located southeast of Greens Prairie Trail. (Physical address or description of the site's location, estimated start date and projected end Estimated Start Date: 1111/14 date, or date that disturbed soils will be Estimated End Date:9/1/15 stabilized) Location of Storm Water Pollution RME Consulting Engineers P.O.Box 9253 Prevention Plan : College Station,TX 77842 For Construction Sites Authorized Under Part II.D.2. (Obtaining Authorization to Discharge) the following certification must be completed: I Chris Rhodes (Typed or Printed Name Person Completing This Certification)certify under penalty of law that I have read and understand the eligibility requirements for claiming an authorization under Part II.D.2.of TPDES General Permit TXR150000 and agree to comply with the terms of this permit. A storm water pollution prevention plan has been developed and implemented according to permit requirements. A copy of this signed notice is supplied to the operator of the MS4 if discharges enter an MS4 system. I am aware there are significant penalties for providing false information or for conducting unauthorized discharges,including the possibility of fine and i riso ntfo kning violations. 1603o - VP Cp s-f rvc-Iicn Allieffe± Signature and Title Date SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 2- Project Administration Start (Page 2.1) Engineering and Design Professionals Information Engineering Firm Name and Address: Jurisdiction ZYY1E CoNls t_-ftnfC F.: -t ntFF)2S City: Bryan 41253 X College Station Cour, ak &rA't t oNs k 77542_ Date of Submittal: '1 el t N't Lead Engineer's Name� and Contact Info.((phone, e-mail,fax): Other: l • t v tri-rcJ , f;r . Supporting Engineering/Consulting Firm(s): Other contacts: Developer/Owner I Applicant Information Developer/Applicant Name and Address: Phone and e-mail: ' ri•SR.12-s LP. `1Z` . 2 7o cr, o0 Property Owner(s) if not Developer/ Applicant (&address): Phone and e-mail: Project Identification Development Name: &R-E F`C., Y✓'F.�tY�c,JS JE✓G Zj , P!-r Is subject property a site project, a single-phase subdivision, or part of a multi-phase subdivision? ��G'"j uotU 3 If multi-phase, subject property is phase 3 of 3 . Legal description of subject property (phase) or Project Area: (see Section II, Paragraph B-3a) C2.a e.V, MeS Sec 3, fit+ 3 If subject property(phase) is second or later phase of a project, describe general status of all earlier phases. For most recent earlier phase Include submittal and review dates. -1.---8L�ows 53P2 Lit-hcA4 is Co,2,:e ,Ncti_Li vr,1ot✓� CoNisz‘eOC.-ttc r- General Location of Project Area, or subject property(phase): 50 dD.t\f t Sl OrJ In City Limits? Extraterritorial Jurisdiction (acreage): Bryan: acres. Bryan: College Station: College Station: II--1 (2 Cp acres. Acreage Outside ETJ: STORMWATER DESIGN GUIDELINES Page 3 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 2— Protect Administration Continued (page 2.2) Project Identification (continued) Roadways abutting or within Project Area or Abutting tracts, platted land, or built subject property: developments: goy-tte.Ae- E -i 2 6 v NNc j MElcflOx)-( Named Regulatory Watercourse(s) &Watershed(s): Tributary Basin(s): I�E-p.cc4 3 nv1 l-F (` - C:> 2� Plat Information For Project or Subject Property (or Phase) Preliminary Plat File#:_ _ Final Plat File#: Date: Name: Status and Vol/Pg: If two plats, second name: File#: Status: Date: Zoning Information For Project or Subject Property(or Phase) Zoning Type: pDQ Existing or Proposed? Case Code: Case Date Status: Zoning Type: Existing or Proposed? Case Code: Case Date Status: Stormwater Management Planning For Project or Subject Property (or Phase) Planning Conference(s) & Date(s): Participants: N/A Preliminary Report Required? _ Submittal Date Review Date Review Comments Addressed? Yes No In Writing? When? Compliance With Preliminary Drainage Report. Briefly describe(or attach documentation explaining) any deviation(s)from provisions of Preliminary Drainage Report, if any. 1S/ps- STORMWATER DESIGN GUIDELINES Page 4 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 2— Project Administration Continued (page 2.3) Coordination For Project or Subject Property(or Phase) Note: For any Coordination of stormwater matters indicated below, attach documentation describing and substantiating any agreements, understandings, contracts, or approvals. Coordination Dept. Contact: Date: Subject: With Other Departments of N/A Jurisdiction City (Bryan or College Station) Coordination With Summarize need(s) &actions taken (include contacts&dates): Non jurisdiction City Needed? ✓ Yes No Coordination with Summarize need(s) &actions taken (include contacts&dates): Brazos County Needed? Yes No Coordination with Summarize need(s) & actions taken (include contacts&dates): TxDOT Needed? Yes No r� Coordination with Summarize need(s) &actions taken (include contacts&dates): TAMUS Needed? Yes No V Permits For Project or Subject Property(or Phase) As to stormwater management, are permits required for the proposed work from any of the entities listed below? If so, summarize status of efforts toward that objective in spaces below. Entity Permitted or Status of Actions(include dates) Approved ? US Army Crops of Engineery No V Yes US Environmental Protection Agency No V.Yes Texas Commission on 0 UT. -., Sc.),S P Environmental Quality No Yes V Brazos River Authority No V Yes STORMWATER DESIGN GUIDELINES Page 5 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 3— Property Characteristics Start (Page 3.1) Nature and Scope of Proposed Work Existing: Land proposed for development currently used, including extent of impervious cover? Site Redevelopment of one platted lot, or two or more adjoining platted lots. Development Building on a single platted lot of undeveloped land. Project Building on two or more platted adjoining lots of undeveloped land. (select all Building on a single lot, or adjoining lots,where proposed plat will not form applicable) a new street(but may include ROW dedication to existing streets). Other(explain): Subdivision Construction of streets and utilities to serve one or more platted lots. Development ✓ Construction of streets and utilities to serve one or more proposed lots on Project lands represented by pending plats. Site proiects: building use(s), approximate floor space, impervious cover ratio. Describe Subdivisions: number of lots by general type of use, linear feet of streets and Nature and drainage easements or ROW. Size of 2 SI Lo-CS Proposed Project 81 � or- Lo4_,16__ Is any work planned on land that is not platted If yes, explain: or on land for which platting is not pending? No Yes FEMA Floodplains / Is any part of subject property abutting a Named Regulatory Watercourse No �/ Yes (Section II, Paragraph B1) or a tributary thereof? Is any part of subject property in floodplain No Yes Rate Map 3 25 F area of a FEMA-regulated watercourse? Encroachment(s) Encroachment purpose(s): Building site(s) Road crossing(s) into Floodplain areas planned? Utility crossing(s) Other(explain): Yes If floodplain areas not shown on Rate Maps, has work been done toward amending the FEMA- approved Flood Study to define allowable encroachments in proposed areas? Explain. STORMWATER DESIGN GUIDELINES Page 6 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 3— Property Characteristics Continued (Page 3.2) Hydrologic Attributes of Subject Property(or Phase) Has an earlier hydrologic analysis been done for larger area including subject property? YesReference the study(&date)here, and attach copy if not alrea y in City files. {2-w p 2A-t a A-ca C_Yt v cH /o---1 VA2p-ot - O(LtG�uNikL PfVi.t,cerr1F-c�T Is the stormwater management plan for the property in substantial conformance with the earlier study? Yes 1/ No If not, explain how it differs. No If subject property is not part of multi-phase project, describe stormwater management plan for the property in Part 4. — If property is part of multi-phase project, provide overview of stormwater management plan for Project Area here. In Part 4 describe how plan for subject property will comply therewith. Do existing topographic features on subject property store or detain runoff? V.-No Yes Describe them (include approximate size, volume, outfall, model, etc). Any known drainage or flooding problems in areas near subject property? V No Yes Identify: Based on location of study property in a watershed, is Type 1 Detention (flood control) needed? (see Table B-1 in Appendix B) / Detention is required. Need must be evaluated. /Detention not required. What decision has been reached? By whom? If the need for How was determination made? Type 1 Detention ,% must be evaluated: I�XtST%Pal' ��' T��--^r?1°'`> > ^t R C F. STORMWATER DESIGN GUIDELINES Page 7 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D - TECHNICAL DESIGN SUMMARY Part 3 — Property Characteristics Continued (Page 3.3) Hydrologic Attributes of Subject Property(or Phase) (continued) Does subject property straddle a Watershed or Basin divide? No Yes If yes, describe splits below. In Part 4 describe design concept for handling this. Watershed or Basin Larger acreage Lesser acreage Above-Project Areas(Section II, Paragraph B3-a) Does Project Area (project or phase) receive runoff from upland areas? No Yes Size(s)of area(s) in acres: 1) 2) 3) 4) Flow Characteristics(each instance) (overland sheet, shallow concentrated, recognizable concentrated section(s), small creek(non-regulatory), regulatory Watercourse or tributary); Flow determination: Outline hydrologic methods and assumptions: Does storm runoff drain from public easements or ROW onto or across subject property? No Yes If yes, describe facilities in easement or ROW: Are changes in runoff characteristics subject to change in future? Explain Conveyance Pathways (Section II, Paragraph C2) Must runoff from study property drain across lower properties before reaching a Regulatory Watercourse or tributary? No Yes Describe length and characteristics of each conveyance pathway(s). Include ownership of property(ies). STORMWATER DESIGN GUIDELINES Page 8 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 3— Property Characteristics Continued (Page 3.4) Hydrologic Attributes of Subject Property (or Phase) (continued) Conveyance Pathways (continued) Do drainage If yes, for what part of length? % Created by? plat, or easements instrument. If instrument(s), describe their provisions. /-s exist for any part of pathway(s)? No Yes Where runoff must cross lower properties, describe characteristics of abutting lower property(ies). (Existing watercourses? Easement or Consent aquired?) Pathway Areas Describe any built or improved drainage facilities existing near the property (culverts, bridges, lined channels, buried conduit, swales, detention ponds, etc). Nearby Drainage Do any of these have hydrologic or hydraulic influence on proposed stormwater Facilities design? No Yes If yes, explain: STORMWATER DESIGN GUIDELINES Page 9 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concent and Design Parameters Start(Page 4.1) Stormwater Management Concept Discharge(s) From Upland Area(s) If runoff is to be received from upland areas, what design drainage features will be used to accommodate it and insure it is not blocked by future development? Describe for each area, flow section, or discharge point. NVAS- Discharge(s)To Lower Property(ies) (Section II, Paragraph El) Does project include drainage features(existing or future) proposed to become public via platting? No Yes Separate Instrument? No Yes Per Guidelines reference above, how will Establishing Easements(Scenario 1) runoff be discharged to neighboring Pre-development Release(Scenario 2) property(ies)? Combination of the two Scenarios Scenario 1: If easements are proposed, describe where needed, and provide status of actions on each. (Attached Exhibit#, ) Scenario 2: Provide general description of how release(s)will be managed to pre-development conditions(detention, sheet flow, partially concentrated, etc.). (Attached Exhibit# Ivl� Combination: If combination is proposed, explain how discharge will differ from pre- development conditions at the property line for each area (or point)of release. If Scenario 2, or Combination are to be used, has proposed design been coordinated with owner(s) of receiving property(ies)? No Yes Explain and provide documentation. STORMWATER DESIGN GUIDELINES Page 10 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.2) Stormwater Management Concept(continued) Within Proiect Area Of Multi-Phase Project Identify gaining Basins or Watersheds and acres shifting: Will project result in shifting runoff between Basins or between What design and mitigation is used to compensate for increased runoff Watersheds? from gaining basin or watershed? No Yes How will runoff from Project 1. With facility(ies) involving other development projects. Area be mitigated to pre 2. Establishing features to serve overall Project Area. K In development conditions? /f� Select any or all of 1, 2, 3. On phase (or site) project basis within Project Area. and/or 3, and explain below. 1. Shared facility(type&location of facility; design drainage area served; relationship to size of Project Area): (Attached Exhibit# 2. For Overall Proiect Area (type&location of facilities): (Attached Exhibit# 3. By phase(or site)project: Describe planned mitigation measures for phases(or sites) in subsequent questions of this Part. Are aquatic echosystems proposed? No Yes In which phase(s) or project(s)? -o u) i Are other Best Management Practices for reducing stormwater pollutants proposed? n No Yes Summarize type of BMP and extent of use: rn N a> Z If design of any runoff-handling facilities deviate from provisions of B-CS Technical N/\, Specifications, check type facility(ies) and explain in later questions. Detention elements Conduit elements Channel features Swales Ditches Inlets Valley gutters Outfalls Culvert features Bridges Other STORMWATER DESIGN GUIDELINES Page 11 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D -- TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.3) Stormwater Management Concept(continued) Within Project Area Of Multi-Phase Project(continued) Will Project Area include bridge(s)or culvert(s)? k No Yes Identify type and general size and In which phase(s). If detention/retention serves (will serve) overall Project Area, describe how it relates to subject phase or site project (physical location, conveyance pathway(s), construction sequence): Within Or Serving Subject Property (Phase, or Site) If property part of larger Project Area, is design in substantial conformance with earlier analysis and report for larger area? X Yes No, then summarize the difference(s): Identify whether each of the types of drainage features listed below are included, extent of use, and general characteristics. Typical shape? Surfaces? c- a Steepest side slopes: Usual front slopes: Usual back slopes: u) >- a) Flow line slopes: least Typical distance from travelway: o typical greatest (Attached Exhibit# ) z V (5 2 /` Are longitudinal culvert ends in compliance with B-CS Standard Specifications? Yes _ No, then explain: ai At intersections or otherwise, do valley gutters cross arterial or collector streets? >- X No __Yes If yes explain: Na`) Are valley gutters proposed to cross any street away from an intersection? a) X No --Yes Explain: (number of locations?) 12 z° STORMWATER DESIGN GUIDELINES Page 12 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.4) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) Gutter line slopes: Least 0.U8 7/ Usual 0,7 Greatest t •03 Are inlets recessed on arterial and collector streets? Yes No If"no", identify where and why. Will inlets capture 10-year design stormflow to prevent flooding of intersections(arterial with arterial or collector)? X Yes No If no, explain where and why not. -0 a Will inlet size and placement prevent exceeding allowable water spread for 10-year design storm throughout site(or phase)? X Yes No If no, explain. rn Sag curves:Are inlets placed at low points? )C Yes No Are inlets and em . conduit sized to prevent 100-year stormflow from ponding at greater than 24 inches? C o X Yes No Explain"no" answers. U) am a) in Wilt 100-yr stormflow be contained in combination of ROW and buried conduit on whole length of all streets? X Yes No If no, describe where and why. Do designs for curb, gutter, and inlets comply with B-CS Technical Specifications? N>C Yes No If not, describe difference(s) and attach justification. Are any 12-inch laterals used? X No Yes Identify length(s) and where used. Pipe runs between system Typical Z.1 O r Longest -2.1 0 } access points(feet): aEi Are junction boxes used at each bend? X, Yes No If not, explain where and why. c E Z o - E Are downstream soffits at or below upstream soffits? Least amount that hydraulic Yes X No If not, explain where and why: grade line is below gutter line (system-wide): s STORMWATER DESIGN GUIDELINES Page 13 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.5) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) Describe watercourse(s), or system(s) receiving system discharge(s) below a (include design discharge velocity, and angle between converging flow lines). U m 1) Watercourse(or system),velocity, and angle?17) q .42 ao E 2) Watercourse(or system),velocity, and angle? o c C •I c4- E °' E m 3)Watercourse (or system),velocity, and angle? >s cO IT-3o Q. E 1-1) For each outfall above,what measures are taken to prevent erosion or scour of N N receiving and all facilities at juncture? r� 1) 12l Se71c PRt P RA-P 2) 0 3) Are swale(s) situated along property lines between properties? No Yes Number of instances: For each instance answer the following questions. Surface treatments(including low-flow flumes if any): r. U) a) 2 D Flow line slopes(minimum and maximum): c I ami o Z Outfall characteristics for each (velocity, convergent angle, &end treatment). U) a� 3 Will 100-year design storm runoff be contained within easement(s)or platted drainage ROW in all instances? Yes No If"no"explain: STORMWATER DESIGN GUIDELINES Page 14 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.6) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) Are roadside ditches used? No Yes If so, provide the following: Is 25-year flow contained with 6 inches of freeboard throughout ? Yes No .2 Are top of banks separated from road shoulders 2 feet or more? Yes No Are all ditch sections trapezoidal and at least 1.5 feet deep? Yes No a) N For any"no"answers provide location(s) and explain: CO CO 0 If conduit is beneath a swale, provide the following information(each instance). Instance 1 Describe general location, approximate length: >- Is 100-year design flow contained in conduit/swale combination? Yes No If "no" explain: o Y Space for 100-year storm flow? ROW Easement Width Z c Swale Surface type, minimum Conduit Type and size, minimum and maximum c and maximum slopes: slopes, design storm: c� Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): c• �^ m c •- 0 o Access Describe how maintenance access is provided (to swale, into conduit): o ns E o a� w c 71) Instance 2 Describe general location, approximate length: E m U) c v Is 100-year design flow contained in conduit/swale combination? Yes No o o If "no"explain: c o- E Space for 100-year storm flow? ROW Easement Width o z o Swale Surface type, minimum Conduit Type and size, minimum and maximum "5 m and maximum slopes: slopes, design storm: c m m • 2 Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): m 3 ° Access Describe how maintenance access is provided (to swale, into conduit): STORMWATER DESIGN GUIDELINES Page 15 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.7) Stormwater Management Concept(continued) Within Or Serving Subject Property (Phase, or Site)(continued) If"yes" provide the following information for each instance: Instance 1 Describe general location, approximate length, surfacing: c E w • L 6 Is 100-year design flow contained in swale? Yes No Is swale wholly c > within drainage ROW? Yes No Explain"no"answers: a) Access Describe how maintenance access is provide: 112 0 • z S c X Instance 2 Describe general location, approximate length, surfacing: 'L n• • CO o E 3 @ Is 100-year design flow contained in swale? Yes No Is swale wholly a �' within drainage ROW? Yes No Explain"no"answers: o 3 'S N O cc Access Describe how maintenance access is provided: 25 a. Instance 3.4.etc. If swales are used in more than two instances, attach sheet providing all above information for each instance. "New" channels: Will any area(s) of concentrated flow be channelized (deepened, widened, or straightened)or otherwise altered? No Yes If only slightly shaped, see"Swales" in this Part. If creating side banks, provide information below. c'.• .c Will design replicate natural channel? Yes No If"no",for each instance o n describe section shape&area, flow line slope(min. &max.), surfaces, and 100-year a w design flow, and amount of freeboard: Instance 1: c � E U) o Instance 2: c. E o z E�X Instance 3: s 0 STORMWATER DESIGN GUIDELINES Page 16 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.8) Stormwater Management Concept(continued) Within Or Serving Subject Property (Phase, or Site)(continued) Existing channels(small creeks): Are these used? No Yes If"yes" provide the information below. Will small creeks and their floodplains remain undisturbed? Yes No How many disturbance instances? Identify each planned location: For each location, describe length and general type of proposed improvement (including floodplain changes): For each location, describe section shape&area, flow line slope(min. &max.), surfaces, and 100-year design flow. a) Watercourses (and tributaries): Aside from fringe changes, are Regulatory Watercourses proposed to be altered? No Yes Explain below. cn • Submit full report describing proposed changes to Regulatory Watercourses. Address existing and proposed section size and shape, surfaces, alignment, flow line changes, • length affected, and capacity, and provide full documentation of analysis procedures ca. and data. Is full report submitted? Yes No If"no"explain: E a) c • All Proposed Channel Work: For all proposed channel work, provide information v requested in next three boxes. If design is to replicate natural channel, identify location and length here, and describe design in Special Design section of this Part of Report. Will 100-year flow be contained with one foot of freeboard? Yes No If not, identify location and explain: Are ROW/easements sized to contain channel and required maintenance space? Yes No If not, identify location(s) and explain: STORMWATER DESIGN GUIDELINES Page 17 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Conde a and Design Parameters Continued (Page 4.9) Stormwater Management Concept(continued) Within Or Serving Subject:Property (Phase, or Site)(continued) How many facilities for subject property project? For each provide info. below. For each dry-type facilitiy: Facility 1 Facility 2 Acres served&design volume+ 10% 100-yr volume:free flow& plugged Design discharge (10 yr&25 yr) Spillway crest at 100-yr WSE? yes no yes no Berms 6 inches above plugged WSE? yes no yes no Explain any"no"answers: U) a) >- For each facility what is 25-yr design Q, and design of outlet structure? Facility 1: 0 Z Facility 2: X I Do outlets and spillways discharge into a public facility in easement or ROW? Facility 1: _Yes No Facility 2: Yes No If"no"explain: 0)0 n 0 L a For each, what is velocity of 25-yr design discharge at outlet? &at spillway? u) °) Facility 1: & Facility 2: & 0 Are energy dissipation measures used? No Yes Describe type and - Li- location: c 0 c a> 15 0 2 For each, is spilllway surface treatment other than concrete? Yes or no, and describe: Facility 1: Facility 2: For each, what measures are taken to prevent erosion or scour at receiving facility? Facility 1: Facility 2: If berms are used give heights, slopes and surface treatments of sides. Facility 1: Facility 2: STORMWATER DESIGN GUIDELINES Page 18 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.10) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) Do structures comply with B-CS Specifications? Yes or no, and explain if"no": U) Facility 1; r. c Facility 2: o U a) For additional facilities provide all same information on a separate sheet. Are parking areas to be used for detention? No Yes What is maximum depth due to required design storm? Roadside Ditches:Will culverts serve access driveways at roadside ditches? No Yes If"yes", provide information in next two boxes. Will 25-yr. flow pass without flowing over driveway in all cases? Yes No Without causing flowing or standing water on public roadway? Yes No Designs&materials comply with B-CS Technical Specifications? Yes No Explain any"no" answers: c. U) rn Are culverts parallel to public roadway alignment? Yes No Explain: U N (C a Creeks at Private Drives: Do private driveways, drives, or streets cross drainage ways that serve Above-Project areas or are in public easements/ ROW? ami z° No Yes If"yes" provide information below. 'YI How many instances? Describe location and provide information below. Location 1: U Location 2: Location 3: For each location enter value for: 1 2 3 Design year passing without toping traveiway? Water depth on travelway at 25-year flow? Water depth on traveiway at 100-year flow? For more instances describe location and same information on separate sheet. STORMWATER DESIGN GUIDELINES Page 19 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.11) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) Named Regulatory Watercourses (&Tributaries): Are culverts proposed on these facilities? No Yes, then provide full report documenting assumptions, criteria, analysis, computer programs, and study findings that support proposed design(s). Is report provided? Yes No If"no", explain: �, Arterial or Major Collector Streets: Will culverts serve these types of roadways? No Yes How many instances? For each identify the a, location and provide the information below. a (0 Instance 1: >- Instance 2: c o Instance 3: c o - zo 'Ws' Yes or No for the 100-year design flow: 1 2 3 o Headwater WSE 1 foot below lowest curb top? a, Spread of headwater within ROW or easement? E - rn N Is velocity limited per conditions(Table C-11)? mExplain any"no" answer(s): o U .0 ca o (0 o o O o . Minor Collector or Local Streets: Will culverts serve these types of streets? • a No Yes How many instances? for each identify the tE5 • o location and provide the information below: aa) eL Instance 1: N c Instance 2: u) w o Instance 3: cFor each instance enter value, or"yes"/"no"for: 1 2 3 U N Design yr. headwater WSE 1 ft. below curb top? .� 100-yr. max. depth at street crown 2 feet or less? E Product of velocity (fps) &depth at crown (ft) _? Is velocity limited per conditions(Table C-11)? Limit of down stream analysis(feet)? Explain any"no"answers: STORMWATER DESIGN GUIDELINES Page 20 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.12) Stormwater Management Concept(continued) Within Or Serving Subject Property(Phase, or Site)(continued) All Proposed Culverts: For all proposed culvert facilities(except driveway/roadside ditch intersects) provide information requested in next eight boxes. Do culverts and travelways intersect at 90 degrees? Yes No If not, identify location(s)and intersect angle(s), and justify the design(s): Does drainage way alignment change within or near limits of culvert and surfaced approaches thereto? No Yes If"yes" identify location(s), describe change(s), and justification: Are flumes or conduit to discharge into culvert barrel(s)? No Yes If yes, identify location(s) and provide justification: Are flumes or conduit to discharge into or near surfaced approaches to culvert ends? No Yes If"yes" identify location(s), describe outfall design treatment(s): 0 U N > Is scour/erosion protection provided to ensure long term stability of culvert structural �j components, and surfacing at culvert ends? Yes No If"no" Identify locations and provide justification(s): Will 100-yr flow and spread of backwater be fully contained in street ROW, and/or drainage easements/ROW? Yes No if not, why not? Do appreciable hydraulic effects of any culvert extend downstream or upstream to neighboring land(s) not encompassed in subject property? No Yes If "yes" describe location(s) and mitigation measures: Are all culvert designs and materials in compliance with B-CS Tech. Specifications? Yes No If not, explain in Special Design Section of this Part. STORMWATER DESIGN GUIDELINES Page 21 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.13) Stormwater Management Concept(continued) Within Or Serving Subject Property (Phase, or Site)(continued) Is a bridge included in plans for subject property project? ')C No Yes If"yes"provide the following information. Name(s) and functional classification of the roadway(s)? What drainage way(s) is to be crossed? U) a) rn a W A full report supporting all aspects of the proposed bridge(s) (structural, geotechnical, hydrologic, and hydraulic factors) must accompany this summary report. Is the report provided? __Yes No If"no" explain: Is a Stormwater Provide a general description of planned techniques: Pollution Prevention ' L--t Fro-4,3Q N Plan (SW3P) C7 established for co*►Sz'�C-�, m project construction? �►p ,-Qv- No X Yes Cort U --f 11J P�sN -0 0-r t N r-1^-[ 1)(217CPUC-C t a r-1 Special Designs-Non-Traditional Methods Are any non-traditional methods(aquatic echosystems, wetland-type detention, natural stream replication, BMPs for water quality, etc.) proposed for any aspect of subject property project? )C No Yes If"yes" list general type and location below. Provide full report about the proposed special design(s) including rationale for use and expected benefits. Report must substantiate that stormwater management objectives will not be compromised, and that maintenance cost will not exceed those of traditional design solution(s). Is report provided? ? Yes No If"no"explain: STORMWATER DESIGN GUIDELINES Page 22 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.14) Stormwater Management Concept(continued) Within Or Serving Subject Property (Phase, or Site)(continued) Special Designs-Deviation From B-CS Technical Specifications If any design(s)or material(s) of traditional runoff-handling facilities deviate from provisions of B-CS Technical Specifications, check type facility(ies) and explain by specific detail element. Detention elements Drain system elements Channel features T\ Culvert features Swales Ditches Inlets Outfalls Valley gutters Bridges(explain in bridge report) In table below briefly identify specific element,justification for deviation(s). Specific Detail Element Justification for Deviation (attach additional sheets if needed) 1) 2) 3) 4) 5) Have elements been coordinated with the City Engineer or her/his designee? For each item above provide"yes"or"no", action date, and staff name: 1) 2) 3) 4) 5) Design Parameters Hydrology Is a map(s) showing all Design Drainage Areas provided? >C Yes No Briefly summarize the range of applications made of the Rational Formula: 6-r -v `tr i P P € 54-ts-Cf"-ten What is the size and location of largest Design Drainage Area to which the Rational Formula has been applied? I -2.. acres Location(or identifier): A3 STORMWATER DESIGN GUIDELINES Page 23 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.15) Design Parameters(continued) Hydrology(continued) In making determinations for time of concentration, was segment analysis used? No )G Yes In approximately what percent of Design Drainage Areas? % As to intensity-duration-frequency and rain depth criteria for determining runoff flows, were any criteria other than those provided in these Guidelines used? X No Yes If"yes" identify type of data, source(s), and where applied: For each of the stormwater management features listed below identify the storm return frequencies(year) analyzed (or checked), and that used as the basis for design. Feature Analysis Year(s) Design Year Storm drain system for arterial and collector streets Storm drain system for local streets ( 0 I Open channels Swale/buried conduit combination in lieu of channel Swales Roadside ditches and culverts serving them Detention facilities: spillway crest and its outfall Detention facilities: outlet arid conveyance structure(s) Detention facilities:volume when outlet plugged Culverts serving private drives or streets Culverts serving public roadways Bridges: provide in bridge report. Hydraulics What is the range of design flow velocities as outlined below? Design flow velocities; Gutters Conduit Culverts Swales Channels Highest(feet per second) 2.42)`\ Lowest(feet per second) Uri Streets and Storm Drain Systems Provide the summary information outlined below: Roughness coefficients used: For street gutters: D•b For conduit type(s) A-D 5 Coefficients:0.1)13 l) ©12 STORMWATER DESIGN GUIDELINES Page 24 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.16) Design Parameters(continued) Hydraulics(continued) Street and Storm Drain Systems(continued) For the following, are assumptions other than allowable per Guidelines? Inlet coefficients? x No Yes Head and friction losses K No Yes Explain any"yes"answer: In conduit is velocity generally increased in the downstream direction? )C Yes No Are elevation drops provided at inlets, manholes, and junction boxes? X Yes No Explain any"no" answers: Are hydraulic grade lines calculated and shown for design storm? X Yes No For 100-year flow conditions? x Yes No Explain any"no" answers: What tailwater conditions were assumed at outfall point(s) of the storm drain system? Identify each location and explain: Open Channels If a HEC analysis is utilized, does it follow Sec VI.F.5.a? Yes No Outside of straight sections, is flow regime within limits of sub-critical flow? Yes No If"no"list locations and explain: Culverts If plan sheets do not provide the following for each culvert, describe it here. For each design discharge, will operation be outlet(barrel) control or inlet control? Entrance,friction and exit losses: •• Bridges Provide all in bridge report STORMWATER DESIGN GUIDELINES Page 25 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX _ APPENDIX D -- TECHNICAL DESIGN SUMMARY Part 4— Drainage Concept and Design Parameters Continued (Page 4.17) Design Parameters(continued) Computer Software What computer software has been used in the analysis and assessment of stormwater management needs and/or the development of facility designs proposed for subject property project? List them below, being sure to identify the software name and version,the date of the version, any applicable patches and the publisher WI NS--roI2-W\ Part 5— Plans and Specifications Requirements for submittal of construction drawings and specifications do not differ due to use of a Technical Design Summary Report. See Section Ill, Paragraph C3. Part 6— Conclusions and Attestation Conclusions Add any concluding information here: _ _ Attestation Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical Design Summary Drainage Report by signing and sealing below. "This report(plan) for the drainage design of the development named in Part B was prepared by me (or under my supervision) in accordance with provisions of the Bryan/College Station Unified Drainage Design G de/ines for the owners of the property. All licenses and permits required by any and all s e and federal regulatory agencies for the proposed drainage improvem-• : -: - been i ued or fall under applicable general permits." _ (Affix Seal)Th ..�+��� 't Licensed Professional En..n er f, .' i\ ft r ••• •i• State of Texas PE No. Ge t'±!:.3 • -,- --w-iii Al.;, c),,ik. fTI STORMWATER DESIGN GUIDELINES Page 26 of 26 APPENDIX. D:TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012