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Home My WebLink AboutDrainage ReportFOR Cavender"s Boot City SITE PLAN JULY 2013 MBESI# 1000-0243 SUBMITTED BY: rmMcCLURE & RROWNE, ENGINEERING/SURVEYING, INC. 1008 Woodcreek Dr., Suite 103 College Station, Tx. 77845 (979) 693-3838 Engineer Reg. No. F-4M 1314 10th Street, Suite 210 Huntsville, Tx. 77320 (936) 294-9749 Survey Reg. No. 101033-00 SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY The Cities of Bryan and College Station both require storm drainage design to follow these Unified Stormwater Design Guidelines. Paragraph C2 of Section III (Administration) requires submittal of a drainage report in support of the drainage plan (stormwater management plan) proposed in connection with land development projects, both site projects and subdivisions. That report may be submitted as a traditional prose report, complete with applicable maps, graphs, tables and drawings, or it may take the form of a "Technical Design Summary". The format and content for such a summary report shall be in substantial conformance with the description in this Appendix to those Guidelines. In either format the report must answer the questions (affirmative or negative) and provide, at minimum, the information prescribed in the "Technical Design Summary" in this Appendix. The Stormwater Management Technical Design Summary Report shall include several parts as listed below. The information called for in each part must be provided as applicable. In addition to the requirements for the Executive Summary, this Appendix includes several pages detailing the requirements for a Technical Design Summary Report as forms to be completed. These are provided so that they may be copied and completed or scanned and digitized. In addition, electronic versions of the report forms may be obtained from the City. Requirements for the means (medium) of submittal are the same as for a conventional report as detailed in Section III of these Guidelines. Note: Part 1 — Executive Summary must accompany any drainage report required to be provided in connection with any land development project, regardless of the format chosen for said report. Note: Parts 2 through 6 are to be provided via the forms provided in this Appendix. Brief statements should be included in the forms as requested, but additional information should be attached as necessary. Part 1 — Executive Summary Report Part 2 — Project Administration Part 3 — Project Characteristics Part 4 — Drainage Concept and Design Parameters Part 5 — Plans and Specifications Part 6 — Conclusions and Attestation STORMWATER MANAGEMENT TECHNICAL DESIGN SUMMARY REPORT Part 1 — Executive Summary This is to be a brief prose report that must address each of the seven areas listed below. Ideally it will include one or more paragraphs about each item. Name, address, and contact information of the engineer submitting the report, and of the land owner and developer (or applicant if not the owner or developer). The date of submittal should also be included. 2. Identification of the size and general nature of the proposed project, including any proposed project phases. This paragraph should also include reference to STORMWATER DESIGN GUIDELINES Page 1 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY applications that are in process with either City: plat(s), site plans, zoning requests, or clearing/grading permits, as well as reference to any application numbers or codes assigned by the City to such request. 3. The location of the project should be described. This should identify the Named Regulatory Watershed(s) in which it is located, how the entire project area is situated therein, whether the property straddles a watershed or basin divide, the approximate acreage in each basin, and whether its position in the Watershed dictates use of detention design. The approximate proportion of the property in the city limits and within the ETJ is to be identified, including whether the property straddles city jurisdictional lines. If any portion of the property is in floodplains as described in Flood Insurance Rate Maps published by FEMA that should be disclosed. 4. The hydrologic characteristics of the property are to be described in broad terms: existing land cover; how and where stormwater drains to and from neighboring properties; ponds or wetland areas that tend to detain or store stormwater; existing creeks, channels, and swales crossing or serving the property; all existing drainage easements (or ROW) on the property, or on neighboring properties if they service runoff to or from the property. 5. The general plan for managing stormwater in the entire project area must be outlined to include the approximate size, and extent of use, of any of the following features: storm drains coupled with streets; detention / retention facilities; buried conveyance conduit independent of streets; swales or channels; bridges or culverts; outfalls to principal watercourses or their tributaries; and treatment(s) of existing watercourses. Also, any plans for reclaiming land within floodplain areas must be outlined. 6. Coordination and permitting of stormwater matters must be addressed. This is to include any specialized coordination that has occurred or is planned with other entities (local, state, or federal). This may include agencies such as Brazos County government, the Brazos River Authority, the Texas A&M University System, the Texas Department of Transportation, the Texas Commission for Environmental Quality, the US Army Corps of Engineers, the US Environmental Protection Agency, et al. Mention must be made of any permits, agreements, or understandings that pertain to the project. 7. Reference is to be made to the full drainage report (or the Technical Design Summary Report) which the executive summary represents. The principal elements of the main report (and its length), including any maps, drawings or construction documents, should be itemized. An example statement might be: "One -page drainage report dated , one set of construction drawings L_sheets) dated and a -page specifications document dated comprise the drainage report for this project." STORMWATER DESIGN GUIDELINES Page 2 of26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 2 — Protect Administration Start (Page 2.1) Engineering and Design Professionals Information Engineering Firm Name and Address: Jurisdiction me6w �'ow^e C�nS4ntr�ias City: Bryan toot t d�Kek College Station Date of Submittal: C. 5 • Tk 77g4� Lead Engineer's Name and Contact Info.(phone, e-mail, fax): Other: Supportin4 Engineering / Consulting Firm(s): Other contacts: Developer / Owner / Applicant Information Name and Address: Developer / Applicant�i� /� CJiJCvJe-1& ( & Phone and e-mail: `103 - Sal -1*11 /' i1 c 7g2o /, CSMLIWhy 1k�Tr 5o3 Pr perty Owner(s) if not Developer / Applicant (& address): Phone and e-mail: Project Identification Development Name: dev ¢n y 6z� Ci �� i ctnki ( �cJ 6Mrr Is subject property a site project, a single-phasb subdivision, or part of a multi -phase subdivision? If multi -phase, subject property is phase of Legal description of subject property (phase) or Project Area: (see Section Il, Paragraph B-3a) 4, " JV f'111Sfe" 42 V i'IB" Jln Cc`4r` ve 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. General Location of Project Area, or subject property (phase): ,I 443MeA k exi-};Ag Cmvden jr� ¢� irt�e�s on Fp��fMfAv i%rire a;� 4v vk e rba� In City Limits. Extraterritorial Jurisdiction (acreage): Bryan: acres. Bryan: College Station: College Station: 0 zz 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 — Prolect Administration Continued (page 2.2) Project Identification (continued) Roadways abutting or within Project Area or subject property: 4,11eon DAitte Vwy Abutting tracts, platted land, or built developments: Named R latory Watercourse(s) & Watershed(s): Tributary Basin(s): Plat Information For Project or Subject Property (or Phase) Preliminary Plat File #: Name: Final Plat File #: Date: Status and Vol/Pg: If two plats, second name: File #: Status: Date: Zoning Information For Project or Subject Property (or Phase) Zoning Type: W kC xisti 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: Preliminary Report Required? 4,k 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. 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. Dept, Contact: Date: Subject: Coordination With Other Departments of Jurisdiction City (Bryan or College Station) Coordination With Summarize need(s) & actions taken (include contacts & dates): Non jurisdiction City Needed? Yes —No 'X Coordination with Summarize need(s) & actions taken (include contacts & dates): Brazos County Needed? Yes —No X Coordination with Summarize need(s) & actions taken (include contacts & dates): TxDOT Needed? YesNo C Coordination with Summarize need(s) & actions taken (include contacts & dates): TAMUS Needed? Yes _ No X 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 ins aces below. EntityPermitted or Approved ? us oons Status Actions include dates ( ) US Army Crops of Engineers No X Yes _ US Environmental Protection Agency No �5 Yes _ Texas Commission on Environmental O uality No Yes _ Brazos River Authority No K 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 cover? iimpervvious �4 �'on i �enkinrJ�oY-4 hoe w 6v;Vi IJ�FtlPIOP �Q 'I("e AeW Ir'n �i' p4lr 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 &!Led adjoining lots of undeveloped land. (select all applicable) Building on a single lot, or adjoining lots, where proposed plat will not form a new street (but may include ROW dedication to existing streets). — Other (explain): Subdivision Construction of streets and utilities to serve one or more lap tted lots. Development Construction of streets and utilities to serve one or more proposed lots on Project lands represented by pending plats. Site projects: 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 Size of drainage easements or ROW. /y Kcta,1 bvli'A) e>p4AOIon i Pew p0k'"v,� lol Proposed Project Is any work planned on land that Is not platted If yes, explain: or on land for which platting is not pending? x No Yes FEMA Floodplains Is any part of subject property abutting a Named Regulatory Watercourse No Yes �C (Section 11, Paragraph 61) or a tributary thereof? Is any part of subject property in floodplaain No Yes X Rate Map CD3 )o area of a FEMA-regulated watercourse. Encroachment(s) into Floodplain Encroachment purpose(s): X Building site(s) Road crossing(s) areas planned? Utility crossing(s) k Other (explain): F"kin� No 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 of26 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? Ad Yes Reference the study (& date) here, and attach copy if not already in City files. Is the stormwater management plan for the property in substantial conformance with the earlier study? Yes 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? X No Yes Describe them (include approximate size, volume, outfall, model, etc). Any known drainage or flooding problems in areas near subject property? 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) i� Detention is required. _ Need must be evaluated. _ Detention not required. What decision has been reached? By whom? If the need for Type 1 Detention How was determination made? must be evaluated: � I STORMWATER DESIGN GUIDELINES Page 7 of 26 APPENDIX. D: TECH. DESIGN SUMMARY t 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? _ 1� No Yes If yes, describesplits below. In Part 4 describe design conce t for handling this. Watershed or Basin Larger acreage Lesser acreage Above -Project Areas(Section II, Paragraph B3-a) Does Project Area (projector phase) receive runoff from upland areas? X No —Yes Size(s) of area(s)ln 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 ll, 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). u STORMWATER DESIGN GUIDELINES Page 8 of 26 APPENDIX. D: TECH. DESIGN SUMMARY V Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 3 — Property Characteristics I 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. 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, bridgeI�, ined channels, buried conduit, swales, detention ponds, etc). In�vlt A 64 V� ye o.ndPf Any 6 Nearby Drainage Facilities Do any oft ese have hydrologic or hydraulic influence on proposed stormwater design? A 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 Concept 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. Discharge(s) To Lower Property(ies) (Section 11, Paragraph E1) 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 # ) 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 mw er(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 I SECTION IX b APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4 — Drainage Concept and Deslon Parameters Continued (Page 4.2) Stormwater Management Concept (continued) Within Project 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? 2i No Yes How will runoff from Project 1. _With facility(ies) involving other development projects. Area be mitigated to pre - development conditions? 2 Establishing features to serve overall Project Area. - 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 for 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)? w mr Are other Best Management Practices for reducing stormwater pollutants proposed? IL No Yes Summarize type of BMP and extent of use: C I _ OI 0 O Z If design of any runoff -handling facilities deviate from provisions of B-CS Technical Specifications, check type facility(ies) and explain in later questions. rn III I Detention elements — Conduit elements Channel features a Swales _ Ditches Inlets _ Valley gutters _ Outfalls Culvert features _Bridges Other II STORMWATER DESIGN GUIDELINES Page 11 of 26 APPENDIX. D: TECH. DESIGN SUMMARY d 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 Proiect Area Of Multi -Phase Project (continued) Will Project Area include bridge(s) or culvert(s)? Y, 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? _ Yes No, then summarize the difference(s): NIA Identify whether each of the types of drainage features listed below are included, extent of use, and general characteristics. Typical shape? Surfaces? a 3 Steepest side slopes: Usual front slopes: Usual back slopes: N } G/ w Flow line slopes: least Typical distance from travelway: 10 typical greatest {Attached Exhibit# ) o z v o }( Are longitudinal culvert ends in compliance with B-CS Standard Specifications? a Yes No, then explain: At intersections or otherwise, do valley gutters cross arterial or collector streets? a v • r No _ Yes If yes explain: V O CD ' 3 `w Are valley gutters proposed to cross any street away from an intersection? w z _ No _ Yes Explain: (number of locations?) /xl Q 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 Usual Greatest 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)? Yes No If no, explain where and why not. n• v w Will Inlet size and placement prevent exceeding allowable water spread for 10-year design storm throughout site (or phase)? _ Yes _ No If no, explain. o on m Sag curves: Are Inlets placed at low points? Yes No Are inlets and conduit sized to prevent 100-year stormflow from ponding at greater than 24 inches? t S _ Yes _ No Explain "no" answers. Y1 m m a Will 100-yr stormflow be contained in combination of ROW and buried conduit on whole length of all streets? _ Yes _ No If no, describe where and why. Do designs for curb, gutter, and inlets comply with B-CS Technical Specifications? Yes _ No If not, describe difference(s) and attach justification. Are any 12-inch laterals used? _ No _ Yes Identify length(s) and where used. Nv, Pipe runs between system Typical ��f Longest q fa1 access points (feet): m y I Are junction boxes used at each bend? k Yes _ No If not, explain where N n and why. C Z a E Are downstream soffits at or below upstream soffits? Least amount that hydraulic w+ Yes _>(' No _ If not, explain where and why: grade line is below gutter line (system -wide); STORMWATER DESIGN GUIDELINES Page 13 of 26 APPENDIX. D: TECH. DESIGN SUMMARY J 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 (include design discharge velocity, and angle between converging flow lines). U 1) Watercourse (or system), and angle? velocity, 64ri arm 0PAi& r'pH fwiyes WA40 0 g E 2) Watercourse (or system), velocity, and angle? cw c o 8.2 Em �0- 3) Watercourse (or system), velocity, and angle? w� wv O o v `o- E For each outfall above, what measures are taken to prevent erosion or scour of wreceiving and all facilities atjuncture? comr-t . &ADA box n d 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): m w rFlow line slopes (minimum and maximum): a 0 w o 3 z Outfall characteristics for each (velocity, convergent angle, & end treatment). M w 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: 0 _ _ Is 25-year flow contained with 6 inches of freeboard throughout ? Yes No ° _ _ 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 N For any "no" answers provide location(s) and explain: 0 0 0 D: If conduit is beneath a swale, provide the following information (each instance). Instance 1 Describe general location, approximate length: N r Is 100-year design flow contained in conduit/swale combination? Yes No _ _ If "no" explain: 0 o Space for 100-year storm flow? ROW Easement Width c Swale Surface type, minimum Conduit Type and size, minimum and maximum X and maximum slopes: slopes, design storm: 0 m Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): c U w C 0 o ccess Describe how maintenance access is provided (to swale, into conduit): o f° m 0 = c Instance 2 Describe general location, approximate length: w N m Is 100-year design flow contained in conduit/swale combination? —Yes —No If "no" explain: c �- E t Space for 100-year storm flow? ROW Easement Width _ _ 8 Swale Surface type, minimum Conduit Type and size, minimum and maximum vand maximum slopes: slopes, design storm: c m H Inlets Describe how conduit is loaded (from streets/storm drains, Inlets by type): c 0 Access Describe how maintenance access is provided (to swale, into conduit): STORMWATER DESIGN GUIDELINES Page 16 of 26 APPENDIX. D: TECH. DESIGN SUMMARY I_ Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4 — Drainage Concept and Deslan Parameters I 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 o" E t N Is 100-year design flow contained in swale? Yes —No Is swale wholly } within drainage ROW? _ Yes No Explain "no" answers: Access Describe how maintenance access is provide: 2 o z c U Instance 2 Describe general location, approximate length, surfacing: ,a w a' c m o E t m Is 100-year lflowSwale?s Swale wholly contained—Yes w o No Explain "no" answers: within drainage No O = W Access Describe how maintenance access is provided: U a C 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 "$wales" in this Part. If creating side banks, provide Information below. c Will design replicate natural channel? Yes No If "no", for each instance o a describe section shape & area, flow line slope (min. & max.), surfaces, and 100-year o LLj design flow, and amount of freeboard: °- N u! Instance 1: C N E o Instance 2: n E o Z c m Instance 3: U 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 w c Watercourses (and tributaries): Aside from fringe changes, are Regulatory u Watercourses proposed to be altered? No Yes Explain below. _ C Submit full report describing proposed changes to Regulatory Watercourses. Address E existing and proposed section size and shape, surfaces, alignment, flow line changes, length affected, and capacity, and provide full documentation of analysis procedures a and data. Is full report submitted? Yes _ No If "no" explain: E c c All Proposed Channel Work: For all proposed channel work, provide information 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 Concept and Deslan 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? I For each provide info. below. For each dry -type facilitiy: Facility 1 Facility 2 Acres served & design volume + 10% 0 , *-.z,3 (0 Ae 100-yr volume: free flow & plugged 0111 AA o. j Ae- . Design discharge (10 yr & 25 yr) Spillway crest at 100-yr WSE? X yes _ no yes _ no Berms 6 inches above plugged WSE7 yes __�L no yes _ no Explain any "no" answers: I l a b4PCill v War }jvtil v rer C� z cab r For each facili what is 2a5--yr design Q, and design of outlet structure? Facility 1:Z � GLI irN neW PAI+-�r,J I+OA 0 z FaWlilly 2* 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 O a 0 o_ For each, what is velocity of 25-yr design discharge at outlet? & at 1p illwa ? Facility 1: 3 2 & Facility 2: & Are energy dissipation measures used? �_ No _Yes Describe type and u_ location: C 0 c w w 0 For each, is spillway surface treatment other than concrete? Yes or no, and describe: Facility 1: No t r e-rek Cal Facility 2: For each, what measures are taken to prevent erosion or scour at receiving facility? Facility 1: LAW vAe;1+-y 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": Facility 1; v-15 a� ri Facility 2: o c c w -� o 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: n C C o Are culverts parallel to public roadway alignment? _ Yes _ No Explain: U � r 10 s Creeks at Private Drives: Do private driveways, drives, or streets cross drainage m ways that serve Above -Project areas or are in public easements/ ROW? o z _ No _ Yes If "yes" provide Information below. How many instances? Describe location and provide information below. mLocation 1: U E Location 2: a Location 3: For each location enter value for: 1 2 3 Design year passing without toping travelway? Water depth on travelway at 25-year flow? Water depth on travelway 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: v Arterial or Maior Collector Streets: Will culverts serve these types of roadways? allo Yes How many instances? For each identify the w location and provide the information below. w Instance 1: r� Instance 2: c o Instance 3: 0 0 o W z Yes or No for the 100-year design flow: 1 2 3 E o Headwater WSE 1 foot below lowest curb top? W E Spread of headwater within ROW or easement? Is velocity limited per conditions (Table C-11)? y Explain any "no" answer(s): N o c Yo ?. l0 ro U Minor Collector or Local Streets: Will culverts serve these types of streets? N No Yes How many instances? for each identify the v _ lo cation and provide the information below: aQ Instance 1: NInstance 2: ro m o Instance 3: � N > For each instance enter value, or "yes" / "no" for: 1 2 3 o ro v ;� Design yr. headwater WSE 1 ft. below curb top? a v 100-yr. max. depth at street crown 2 feet or less? E Product of velocity (fps) & depth at crown (ft) = ? „4 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? w No _ Yes If "yes" identify location(s), describe outfall design treatment(s): 3 C C O O V! C > Is scour/erosion protection provided to ensure long term stability of culvert structural 0 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 abridge included in plans for subject property project? —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? m w m m M 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: Z Pollution Prevention sl �tvKC ; (ov�b+rv6ltnn BSI l�fN a Plan (SW3P) established for � 1S VSed 0 'wfoe 51, if 6E� 17 l eoveS ?3 project construction. 3 No X Yes 4e plbje(_�S4e- Special Designs — Non -Traditional Methods Are any non-traditional methods (aquatic echosystems, wetland -type detention, natural stream reglipation, BMPs for water quality, etc.) proposed for any aspect of subject property project? X 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 Aucust 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 _ 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? DE Yes No Briefly summarize the range of applications made of the Rational Formula: � iHa�lnn ; $u&g RKeS br6 jw) I Prc^f What is the size and location of largest Design Drainage Area to which the Rational Formula has been applied? 6.30 acres Location (or identifier): CX, STORMWATER DESIGN GUIDELINES Page 23 of 26 APPENDIX. D: TECH. DESIGN SUMMARY l Effective February 2007 As Revised August 2012 SECTION IX APPENDIX D - TECHNICAL DESIGN SUMMARY Part 4 — Dralnaae Concept and Design Parameters Continued (Page 4.15) Design Parameters (continued) Hydrology (continued) In making deter Inations for time of concentration, was segment analysis used? 4@ �t No Yes In approximately what percent of Design Drainage Areas? -Aw- % As to intensity -duration -frequency and rain depth criteria for cleterrryining runoff flows, were any criteria other than those provided in these Guidelines used? zC 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 Open channels Swale/buried conduit combination in lieu of channel �— Swales�— Roadside ditches and culverts serving them�- Detention facilities: spillway crest and its outfall Z S io 25 3o Z y �o zs Sb Detention facilities: outlet and conveyance structure(s) F, Detention facilities: volume when outlet plugged 00 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) — — Lowest (feet per second) 1.6 — — Streets and Storm Drain Systems Provide the summary Information outlined below: Roughness coefficients used: For street gutters: 0.0I8 For conduit type(s) &n Coefficients: Q-014 STORMWATER DESIGN GUIDELINES Page 24 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effective February 2007 As Revised August 2012 M 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? —No —Yes Head and friction losses —No —Yes Explain any "yes" answer: In conduit is velocity generally increased in the downstream direction? _ Yes _ No Are elevation drops provided at inlets, manholes, and junction boxes? _ Yes _ No Explain any "no" answers: Are hydraulic grade lines calculated and shown for design storm? Yes No For 100-year flow conditions? _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 d J SECTION IX APPENDIX D — TECHNICAL DESIGN SUMMARY Part 4 — Dralnaae 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 Geel :5ve4,, v t 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 III, 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 Guidelines for the owners of the property. All licenses and permits required by any and all state and federal regulatory agencies for the proposed drainage improvements have Peen issued or fall under applicable general permits." (Affix Seal) :..ui ...... Llc a rof sional Engineer ........... ..............err J1 iTr LNO(3ERTSCI f q State of Texas PENo,..................... """' .g4746 r ` ; ;:, a L ottyS�/ON r STORMWATER DESIGN GUIDELINES Page 26 of 26 APPENDIX. D: TECH. DESIGN SUMMARY Effeclive February 2007 As Revised August 2012 1 I I � f • ... III °E I1 ,, II A - --iy/ For Interim Review Onlv These documents have been released on June 10, 2013 for the purpose of review and comment under the authority of: Jeffery L. Robertson P.E., P.E. No. 94745 They are not to be used for construction purposes. ISSUED FOR REVIEW AND COMMENT. Of X O C 3 w w o V N o v g cn i / 4 Lj / NN / 0 Uq CM rZ co V O Co Z_ z° M rn W 't Z > 2 0 N � U) a? � � co -'tN0) 00 U) GD a)o i ~ mzu- o XcgM 06 _ 1- W O c Z X W 'IMD � o Site �zW o16 � m 0) � > U Z 0 o O T W w U r 2 :1YM ------------- I ■� n� U) 1..1. V♦ 4-j A cures s: 2300 Ear/ Rudder Fwy. U) College Station, Tx 77840 " 4) co Ca ven der's Bo o f City Sulldirga*;id Parting L of Expansion Lot 214—R, Block I Sutton Place Subdivision Moran Rector League, A — 46 1. 922 A CRES SHEET NO. College Station, Brazos County, Texas SUBMITTED.• lu/v, 20I3 SCALE- I" = 20' AA lip cant/Owner: Prepared Bv: ❑ Mike Cavender, Real Estate McClure & Browne Engineering/Surveying, Inc. 7820 South Broadway 1008 Woodcreek Dr., Suite 103 Tyler, Tx 75703 College Station, Texas 77845 ICJ LJ (903) 509-9509 (979) 693-3838 10000261-DM.dwg Drain age, Map N 0 O A 7 V m R �U L N O m C Vi x a W c R y O � �u 0 LL m 0 0 Y R 006b ,fin N N'N OOW;E � N N c OSO Ln OSI ? `- c M N N szt) rn rn m N O � O6b�� -------------___ � t0 t0 t0 ONxroMm C O O O u r r r Slxn�� c --.-. -_-rnmM ZO '�ooc u Cl M InZI=�(dm c 000 �13Sf1 E o 0 0 0 0 .- �l'�IpO E vvm .LLIOOl3A moon �f o olo MO'Id a31ino �+ H1ON31 000 c � of MOIJ a311no x °' l itld OOO - N MO'Id ONtlla3AO �+ 0 0 0 H1ONTI MO'Id ONTMAO N x tlO -ltllol o 0 70 OI Ci O N M 1N3W3Atld o 0 0 vNi000 'ItlI1N301S3a o 0 0 0 tl3aV a roi o 0 O3dO-13A3ONn o 0 0 0 M tl3atl -Itllo1 o o d a VaNV 3OVNI"(3 z u'f � of N o as EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING Cavender's Boot City D.A. # I D.A. # _. Pond Routing _-_ EVENT= 5 D.A. # D.A. # r a O o 9, x N a a w ? m 0 U + c + c = q v co N c a + rq N + c O v c > o v o w �- ° a 0 w J O F- 0 t o J ? f- N r ul _------- _. 1.01 --- Tc 10.00--________ __-- -_ J _10.0 (.__. _--� -10.0. -- _- Inc I 1 Time 0.0 cfs 0.0 cfs 0.0 _ cfs 0.10 cfs 0 00 cfs - 0.00 cfs 0.00 ft 260 0 cfs 0 0 cfs cfs cfs 0.00 0.0 0.00 1.0 0.1 0.1 - 0.29, _ 0 09 -- 0.10 0 00 260 0 _ 0 1 0.10 0.1 0.10 2.0 0.2 6.2 0.48 -- 0.35 0.38 0.021 260.0 0.2 0 20 0.2 0 21 6.0 -----4.0 0.6- 04 _ 0.3 - -- 0.4 0.68 OW- _-_ 0.76 1.31 - 0.83 -- 1.43 0.04 0.0 260.1 626 01 0.3 04 0.32 044 0.3 0.4 _ _ _ 0.31 -0.42 _5.0 60 0. 0.6 0.5 0.6 - 1.07 1.26 2.01 2.85 2.18 3.07 _ 0.09 0.11 260.1 260.1 0.5 0.6 0.55 0.67 - 0.5 0.6 0.52 0.62 - 7.0 8.0 0.7 0.8 - 0.7 _ 0.8 1.45 1M .65 ---_- 3.83 4.94 4.11 5.28 _ 0.14 0.17 _ - 260.2 260.2 0.7 0.7 0.79 --_--- 0.92 --- 0.7 - 0.8 0.73 ---- 0.83 9.0 0.9 0.9 1.84 6.17 6.59 0.21 ----- 260.2 _ 0.8, 1.05 -- 0.9 .._- 0.93 10.0 ___--- 1.0 1.0-- 189 --_- --- 7.49 8.01 __ 0.26 26� 09i 119 _ 1.0 1,04 11.0 _ 0.9- 0.9 1.79 _ - 8.77 -_ 9.38 -0.31 260.3 09 1.19 �_--_ 1.0 0.99 12.Oi 13.0 09, 0.8 09 0.8 110 1.60 _ 9.87 10 80 _-1056 11 56 0.35 0 38 260.3 260.3 08 0.8 _119� 1.18 - 0.9 0.9 0.93 0.88 14 0 15.0 0.8 0.7 6.8 0.7 _ 1.50' 1.41 _ 11.56 -_ 12.17 _ 1Y401 13 06 0 42 0 44 260.3 260.3 0 7 0.7 - l . v 1.15 _ 0.8I 0.8 0.83 0.78 16.0 0.7 _ 0.7 1.31 12.65 13.58 0.47 2603 0.7 112 0.7 jr 0.73 17.0 o.6 0.6 1.21 13. - 00 13.96 0.48 260.4 109 -- _--__ __- 0'7 0.68 18.0 0.6 - 0.6, 1.11 13.23 14.21 0.49 260.4 _ _-06 0.6 1 05 0.6 0.62 19.0 0.5 0.5 1.02 13.35; 14.34 0.50 726b.4, 0.5 1.01 0.6 0.57 20.0 0.5 0.5 0.92 13.38 14.37 0.50 260.4 0.5 0.96 0.5 0.52 21.0 _ - 0.4 0.4 0.82 13.31 14.30 0.491 260.4 0.4 - 0.91' 0.5 0.47 ----- 22.0 0.4 0.4 0.73 13.16 14.13 0.491 260.4 0.4 0.86 0.4 0.42 23.0 0.3 0.3 0.63 12.93 13.89 0.48 260.4 0.3 0.80 0.4 --_--- 0.36 ---- 24.0 0.3 --- 0.3 0.53 ..--._ 12.63 13.56 -- ----- 0.46 260.3 0.3 0.74 0.3 0.31 25.0 0.2 0.2 044 12.27 13.16 - 0.45 260.3 0.2 0.68 0.3 0.26 - 26.0 0.2 0 2 _ - 0.34 11.84, 12.70 0.43 260.3 0.2' 0.62 0.2 0.21 27.0, 0.1 0.1 -- 0.24 1137 12.18 041 260.3 01 055 __- 0.2 0.16 _28.0 -- - 29.0 _ _ 0.1 0.0 0.1 0.0 0.15, 0.05 10.84 10.26 11.61 10.98 0.39 i 0.36 260.3 266.3 01 0.0 0.48 0.41 _- 1..-__-- 0.1 0.1 0.10 0.05 30.0 -0.0 0.0 0.00 _ _ 9.63 10.31 034 260.3 _ _ - -- 0.0 -- 0.34�� --0.31 0.0 0.00 31.0 - 0.0 0.0 - 0.00 - 9.00 - 9.63 260.3 0.0 0.0 0.00 --32.0 0.0 _ 0.0 0.00 8.41 9.00 _--0.31 --0.29 260.3 0.0 0.29 0.0 0.00 _ - 33.0 0.0 0.0 0.00 7.87 8.41 0.27I 260.2 0.0 0.27 -- 0.0 0.00 340 3 0.0 00- 0.0 0.0 - 0 00 0.00, 7.36 6.89 7.87 7.36 0.25, 0.24 260.2.2 2602' 0 0 00 0 25 0.24 0.0 0.0 0.00 0.00 36.0 37.0 0.0 0.0 0.0 0.0 om 0.00 6.45 6.04 _ 6.89 6.45 0.22 0.20 260.2 266.2 _-- - -- 0.0 0.0 --- 0.22 0.20 ---____ 0.0 0.0 0.00 0.00 38.0 -_-_-_ 0.0 _.-------- 0.00 --_. _- 5.65 6.04 ------. 0.19 260.2 0.0 0.19 0.0 0.00 69.0- _ _ _ 0.0 _0.0 0.0 _ 0.00 5.29 5.65 260.2 0.0 _018 _- i - 0.0 _0.00 -_-_ 40.0 0.0 -- 0.0 _ 0.00 ___-- 4.95 5.29 _ _0.18 - 0.17 260.2 ---- 0.0 0.17' _ _ _ _ _-- 0.0 0.00 41.0 O.o 0.0-_-- 0.00 4,62 -- 4.95 0.16 -- 260.2 0.0 0,16 ( 0.0 0.00 PEAK FLOWS 2__6_0.36, 1 1 1 1 dra.xls 0.00 indicates inital condition Exhibit D-1 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING Cavender's Boot City D.A. # D.A. # Pond Routing EVENT-- 25 - �__ - D.A. # _ D.A. #_ _ t o W CS c o W C9 Z c (J V O EnOI J O J 2 'O C C 9 C + C> �' Fa-O FN toO 0 O 2 6 U C N Off. W O- 0. d W Op - _ 1_2 -- ---- 1.2 _ -_-- 1,3� To 10.0 10.0 10.0 inc 1.0 - i Time cfs cfs cfs cfs cfs I cfs It cfs I cfs cfs cfs 0.0 0.0 0.0 - 6.12 -- 0.00 0.00 0.00 260.0 0.0 0.00 ( ----- 0.0 0.00 1.0 0.1 0.1 0.37 0.11 -- 0.12 0.01 260.0 01 _ an T 0.1 0.13 2.0 0.2 0.2 0.62 0.44 0.49 0.02 _ 260.0 0.2 0.26 �_ 0.3 6.27 3.0 0.4 -_. -- 0.4 0.87 0.97 1.06i 0.05 260.1 0.4 0.41 -1 0A _ 0A0 4.0 0.5( 0.5 1.12I 1.68 1.84 0.08 260.1 0.5 0.56 ( 0.5 0.53 5.0 0.6 0.6 1.37 _ 2.59 - 2.80 0.10 260.1 -0.6 0 70 0.7 0.67 6.0 0.7 0.7 1.62 3.69 3.96 0.14 260.1 0.7 0.85 0.8 0.80 7.0 0.9 0.9 1.86 4.96 5.30 0.171 260.2 0.8 1.01 0.9 0.93 8.0 1.0 - _ 1.0 2.111 - 6.39' _ _6.82 _ _ 0.221 _ 260.2 1.0 _ 1.18 1.1 1.07 9.0 1.1 1.1 2.36� 7.95 � 8.50 0.28 260.2 1.1 1.35 U 1.26 10.0 1.2 1.2 2.42 i 9.63 10.31 0.34 260.3 1.2 -1.54 _ 1.3 1.33 12.0 1. 1.2 11.25 12.06 0.4 260.3 1.1 154 1.3 1.2 12.0 1.11 --- 1.1 i1-7 - 2.17 -- 12.62 13.55 0.46 260.3 1.1 51 4 - 1.2 1.20 13.0 1.1 _ 1.1 2.05 _ 13.77 14.79 _ 0.51 _ 260 4 -1.0 -1 53 _ 1.1- _ - -1.13 - 14.0 1.0 1.0 1.93 14.71 15.82 0.55 2604 1.0 1 51 1.1 1.07 15.0 0.9 0.9 1.80 _ 15.45 16.63 0.59 260 4 0.9 1 49 1.0 1.00 16.0 0.9 0.9 1.68 16.02 17.25 62 260.4 0 6 1 46 -- 0.9 _ - 0.93 17.0 0.8 _ _ 0.8 _ l55 - 16.43 IT70 _0 0.64 260.4 0.8 1 421 0.9 0.87 18.0 0.7 0.7 1.43 16.68 17.98 0.65 260.4 0.7 1.37 _ _ _ -- 0.8 0.80 19.0 0.7 0.7 1.30 16.80 18.11 0.65 260.4 0.7 1.31 _ _ _--- 0.7 0.73 --- ---- 20.0 0.6 - 0.6 - 1.18 -_--_ 16.80 18,11 ----- 0.65 260.4 ----- 0.6 ---._-.2 1.25i --- -- 0.7 0.87 21.0 0.6 0.6 1.06 16.68 17.98 0.65 260.4 0.5 1.19 ----- 0.6 0.60 22.0 0.5 0.5 0.93 _ _ _ 16.46 17.74 0.64 260.4 _ - 0.5 1.12 0.5 0.53 23.0 0.4 0.4 0.81 16.15 - 17.39 0.62 260.4 0.4 1 04 0.5 ----0.47 24.0 0.4 0.4 0.68 15.75 16.95 0.60 260.4 0.4 --0 96 _ - -- 0.4 0.40 25.0 0.3 0.3 - 0.56 15.27 16.43 0.58 260.4 0.3 0.88 _ ---- 0.3 _ 0.33 26.0 0.2 0.2 0.43 14.72 15.83 0.56 260.4 0.2 0.80 0.3 _ - 0.27 27.0 0.2 o.2 oY 14.10 15.15 0.53 260.4 0.2 --0.71 0.2 0.20 28.0 0.1 0.1 0.19 13.41 14.41 ----_ 0.50 -._-_- 260.4 0.1 - -__ 0 62 _ _ _ _ - 0.1 0.13 29.0 0.1 0.1 0.06 12.66 13.60 0.47 260.3 0.1 0.53 0.1 0.07 30.0 0.0 0.0 0.00 11.87 12.73 _ _ - - 0.43 260.3 -0.0 0.43 0.0 0.00 31.0 0.0 0.0 0.00 11.07 11.87 0.40 260.3 0.0 -0.40 - 0.0 0.00 32.0 0.0 0.0 - -- 0.00 10.34 11.07 0.37 266.3 0.0 0 37 0.0 0.00 33.0 0. 01 0.0 0.00 9.66 1-- - 034 ---- 0.34 --- 260.3 0.0 --. ----- 0.34 ------ 0.0 -0.00 34.0 0.0 �.. 0.0 0.00 9.03 9.66 0.32 260.3 0.0 0.321 0.0 0.00 35.0 0.0, 0.0 0.00 _ 8.44 9.03 0.29 260.3 0.0 0.291 0.0 0.00 36.0 0.0 0.0 0.001 7.89 8.44 0.27 260.2 0.0 0.271 0.0 0.00 _._ 37.01 0.0 0.0 _ - 0.00 7.39 - 7.89 _ 0.25 260.2 0.0 _ 0.251 0.0 ado 38 O j 0. 0 0.0 0.001 _ _ 6.91 -- 7.39 --0.24 260.2 0.0 _ _0 24 _ 1 0.0 _ 0.00 39.01 0.0 0.0 0.001 6.47 6.91 0.22 260.2 0.0 0 221 0.0 40.0L 0.0 _- 0.0 0.00j _- 6.06 6.470.21 260.2 0.0 0.211 _0.0o - 0.00 ----41.01 0.0 0.0 _ 0.00j _ 5.67 -- 6.06 0.191 260.2 0.0 -- _ _ _ 0.191 _0.0 1 O.Oi- 000 PEAK FLOWS- -- 266.44 1 ---- 2 ---� 1 - 1 ---. dra.xls 0.00 indicates inital condition Exhibit D-1 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING Cavender's Boot City a L° rn .o 3L Op Tc nc D.A. # 0 a _ ....1.4 III 10 .0 I D.A. # _Pond W z U - Routing c 9 c d v N - EVENT= + v c N 50 _ + C7 c c c a° 0. D.A. #. a a 1.41 10.0 w 'r0 ha- O �a 1.5 10.0 <7 Jz N Time L cfs cis cis cis cfs cfs ft cfs cfs cis cfs 0.0i 0.0 - 0.0 014 0.00 0.00 0001 0.0 0.0_ 0.00 1.01 0.1 0.1 0.42 0.13 0.14 0011 _260.0 260.0 0.1 _000 -014 0.2 0.15 2.0 0.3 0.3 0.70 0 50 0.55 ----0.02 _ 1 260.0 0.3 0.30 0.3 0.30 3.O1 6.4 0.4 _ 0.98 1.16 _ 1 20 0.05) o.4 -- 0.46 - _ _ _ _ --- - 0.5 0.45 4.0 0.6 0.6 _ _ 126 191 _ - 208 _ 0.081 _260.1 260.1.E-__ _ _ 0.5 063 _- - ---_-0.6 0.60 5 01 0.8 0.8 1.83 2 95 3 0 11 260 _ 0.8 079 6.0 0.8 0.8 1.83 4 19 49 4 49 0.15 260 2 2I 0.8 0 96 96 0.9 .. 0.90 7.01 1.0 1.0 __ 2.11 5 63 6 02 _ 9 26260.21 -0.9 _ 1.14 _ 1 1 1.05 1 OS 8.0i 1.1 - 1.1 2.39 724 _ 7.74 0.25 260.2 _ 1.1 -133 -_- 1.2+_ 120 9.0i 1.3 13 - 2.67 9.00 963 - - - 260.3 - - -1 53 1.4I 1.35 -- 10 0 _- _ _ - -- -- _. _0.31 _- _ _1.2 _ 1.50 11.011.3-- 1.3 2.60 12.70 13.63 0.47 --_ 260.3I -- 1.3 --- 1.75 -----� 1.4, 1.43 12.01 1.3 -1.2 1.3 -- _ 2.46 - -- 14.23 --15 29 __- 0 53 260.4 1.2 75 _ 1.4I. 1.35 13 0� 1 2 2.32 15 50 16 68 0.59 260.4 - - 1.2 _1 1.74 1.3 1.28 14.0, 1.11 1 1 2.18 - 16.54 17M -0.64 260.4 1.1 73 -- 1.2 1.26 15.0 1.1 _ 1.1 _ 2.04 _ 17 35 18.71 0.68 260.4 1.0 _1 1.70 - 1.1 1.1 16.0 1.0i 1.0 1.90 17.97 19.39 0.71 260 5 0.9 1.66 1.1 17.0 0 9i 0 9 1.76 18.40 -19 86 0.73 260.5 0.9 1.61 _ 1.0 _1.05 0.98 18.0 _ 0.8 - 0 8 1.62 18 67 20 15 0.741 260 5 0.8 1 56 0.9 0.90 19.0 0.8 0.8 1.47 18.78 -20 28 0.75 260 5 0.7 1 49 0.8 0.83 20.0 0.71 0.7 1.33 1676 _ -2026 _ 0.751 260.5 0.7 _ 1.43 _ 0.8 0.75 21.0 0.6I 0.6 1.19 18.61 20.09 0.741 .... 260.5 0.6 1.35 0.7 0.68 22.0 0.6 - 0.61 _ 1.05 _ - 18.34 - 19.80 0.73 ` 260.5 0.5 --1 27 0.6 0.60 23.0 0.5! 0.91 17.98 1 " _ 0.71 260.5 0.5 1.19 0.5 0.53 24.0 -0.5 04 0.4 - 0.77 17.51 0.69� 260.5 0.4 1.10 0.5 0.45 25.0 04 041 0.63 1696 _._ _1889 1828 0.66 260.4 0.3 100 0.4 0.38 26.0 0.3 0.3'- 0.49 16.33 17.59 0.63 260.4 0.3 -_ OM 0.3 0.30 27.0 0.2 0 2 � 0.35 15.62 16 82 0.60' 260.4 -0.2 80 0 2 0.23 28.0 01 - _ _ 0.21 14.85 1598 0.56i 260.4 0.1 _0 070 0.2 0.15 29.0 0.1 0.1 0.07 - 14.01 --15 06 0.52j 260.4 0.1 -0 59 0 1-- 0.08 31.0 0.0 0.0 _. 0.00 13.11 - 14 08 0.49 260.4 0.0 0.49 0.0 0.00 31.0 0.0 0.0 - 0.00j _ _ 12.22 1311 -0.45� 260.3 0.0 _ 045 0.0 0.00 32.0 00 0.0 0.00i 11.40 12.22 0.41 260.3 0.0 0.41 __ --0.--- 0.0-0.00 33.0 0.0 0.0 0.00; 10.64 11.40 0.38 260.3 0.0 --0.36 0.0 0.00 34.0 0.0 0.0 --0.00 9.94 10.64 _0.35 260.3 -0.0) 0.35 _ _ 0.0 6.60 35.0 0.0 0.0 0.00 - 9.29 9.94 0.33 260.3 -O.Oi 0.33 0.0 0.00 36.0 0.0 0.0 0.00, 8.69 9.29 0.30 260.3 0.0' 0.30 0.0 0.00 --_._--- 37.0 0.0 - 0.0 -__--___ 0.00 -- 8.12 8.69 _ --- 0.28 260.2 ---- 0.0` ----- 0.28 ----- -- --_. 0.0 _-_ 0.00 38.0 0.0 0.0 _ 0.00 _ __ 7.60 _---- _ 8.12 ----0.26 _ 260.2 � _ _ _ _ ------ - 0.0 - OM 39.0 0.0 0.0 0.00 _ 7.11� - 7.60_ --0241 2602 _ _ _-0.0 0.0 _0.26 0.24 0.0( _ 0.00 40.0 __ 0.0_ 0.0 --- ____ 0.00 6.65� _ 7.11 _ 023 - 2602 0.0 _-_- 0.231 O.Oi 0.00 41.0 0.0 6.0 0.00 26 3 6.65 ( 0.21 260.2 0.0 0.211 -__ 0.0 0.00 PEAK.FLOWS -- I 1 260.48 ___-- 1 2_ j ---- 2 -1. --2----- dra.xls 0.00 indicates inital condition Exhibit D-1 EXHIBIT "D-1" PROPOSED DETENTION POND ROUTING Cavender's Boot City = a O T i D.A. # N O G D.A. # o z g O U Pond Routing + } C --- c 910 N EVENT= d D C N _100 -. C O c C > a W D.A. # O. 2 o y Ja F O 0 a _ D.A. # y 0 JF F N 0 R Qp --- Tc me -1.6 11.0 1.0 __- _._ ..._ _ 1.6 10.0� __ _.. __ _ _ 1.0.0 - Time 0.0 _1.0 2.0 30 4.0 5.0 6.0 7.0 8.0 .0 9 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 - 19.0 20 0 cfs 0 0 02 0 3-- _ 0.5 0.6 0.8 0.9 1.1 1.3 14(. 1.6 1.5 1.4 - 1.3 1 3 1.2;-- 1.1 1.0 0.9 0.9 0 8 cfs - 0.0 02 0 3 _ 0.5 0.6 0.8 0.9 1.1 - 1.3 14 1.6 _ 1.5 t4 1.3 1 3 12' 1.1 1.0 - 0.9 0.9 0.8 - 0.7 1 cfs 0.161 0.47 - 0.79 _ 1,.10 _ 1,42 1 74 -- 2.05 2.37 _ 2.68 3.00 _ 3.08 2.92 _ 2 76 2.60 -- _ 2.45 2 29 2.13 -_--_ fv 1 82 166 --- 1.50 - 13 cfs 0.00 --- 0.14-0.16 -- 0.56 _ 3 1.2 _ 2 15 3 32 - 4.73 --- _ 6.35 8.15 - 10.12 -- 12.22 _ 1423 15 93 .33 __._ 17 1 �__ 8 46 19.36 19.62 19 58 19 65 19.66 - 19.72 _ 19.63 cfs - 0.00 0.62 1 _- .35 2.34 - 3.57 - 5.06 - __6.78 8 72 -1083 _-13 12 _15.30 17.15 _18.69i 19 93 20 91 -_21 64 21.75 21.56 --2L 21.33 21 22 - c_fs 0 00 -001 0.03 - 0.06 0.09 -_--0.13 0.17 022 -- 0 28 036 0.45 __- 0.53 0.61 __-_0.68 _ _ 0 73 - 0.78 -_-1 01 1.08 0.96 -0.89, 0 81' _ 0 79 ft� L 260 0 2600 260.0 260.1 2 -60.1 260.1 260.2 260.2 260.2 260.3 _--1.97 260.4 - 260.4 260.4 _260.5 --- 260.5 260-.5 260.5 260 5 260.5 260.5 260.5 -260.5 cfs 0.0 0.2 0.3 0.5 ----0.6 0.8 --__ _ 0.9, 1.1 1.2 1.4 --- 1.4 -1.4 _ 1.3 1.2 -----1.1' 1.1 1.0 0.9 0.8 0.8 ---- 0.7 -0.6 - cfs 0 00 016 0.33 0.52 0.70 0.89 1.08 _1.28 1.50 1.73 ---- 1.98 --- 198 1.97 -__1 95 1.92 -2.08 2.07 1.87 -1.73 1.57 1.48 - ---_ - _ ---- _ ---- _ -- - ---- - --- ----__- _ -. ----- cfs 0.0 0.2 0.3 0.5 0.7 6.8 1.0 i 1.2 ---- 1.4 1.5 1.7 -- _1.6 --- L5 1.4 - . - 1.4 -1.3 1.2 1.1 1.0 -0.9 0.8 --- 0.8 cfs 0.00 0.17 0.94 _ - 0.51 0.68 --0:85 1.01 -- _1.18 j -- 1.35 --1.52 1.69 - _ 1.61 _ -- 1 .52 1_.44 1.35 1.27 1.18 1,10 1.01 -0.93 0.65 - ---- 0.76 22 0 23.0 24.0 26.0 27 0 280 29 0 _ no 32.0 33.0 34.0' 35.0 36.0 37.0 38.0 39.0 40.0 41.0 0.6 0.6 0.5 0.4 0 3 0 2 02 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ao 0.0 0.0' 0.01+ 0.6 06 05 0.4 0.3 -- 0.2 - 02 0 1 0.0 -_ i 0.0 _--- 0.0 - 0.0 0.0 0.0 -- 0.0 - D 0' 0 0� 0 0 _ 1.18 - jO."87 _ - 0.39 - 0.24 0.08 0.00 0.00 0.00 --_- 0.00 0 00 _ 0 00 0 00 -- 0.00 0.00 O.00I 0.00 19.41 07 61 05 i9 i9 16 65 1583 14 94 13.01 _ 12 13 11.31 - 10.56 9.87 9 22 -- 8 62 -- 8.06 7.54 7.06 -- 6.60 20 98 20.600.76 20.10 19.48 _--18.76 17 95 -1705 16.07 13.97 - 13.01 12 13 11.31 10.56 - 9.87 9.22 8 -621 _ 8 06 _ 7.54 7.06 0.76 _ 0.74 0.71 -0 68 0 65 - 061 0 57 0.48 0.44 0.41 037 0.35 0.32 0.30 0 28 0.26 -0.24 0.23 260.5 260.5 260.5 260.5 260 4 2604 260 4 260 4 260 3 260.3 260.3 260 3 260.3 260 3 260.2 260.2 280.2 260 2 0.5 0.5 0.4 -0.3 0.2 0.2 0.1 0.0 0-.0 0.0 0.0 6.0 0.0 0.0 0.0 0.0 0.o 0.0 --- 1.39 1.30 1.20 1.10 0.99 0.88 076 -0.64 0.48 0 44 0.41 6.37 id.35 0.32 0 30 0.28 0 26 -0.24 0 23 ---- _ _ _ - _ _ - _ _ - --0.7 0.6 0.525.0 0.4 0.3 0.3 0.2 0.1 0.0'' 0.0 0.0 0.0 0.0 0.0--- 0.o 0.0 0.0 0 0 0.0 --0.68 0.59 0.42 - 0.34 0.25 - 017 0 08 0.00 0.00 0 00 0 0o - 0.00 0.00 _ 0.00 0.00 -_ 0.00 _ 0.00 0.00 - 0.001 PEAK.FLOWS 2_ _I_ 2 --- 1 1-- -260.50� 2 -- 2- 2 2 s 11 0.00 indicates inital condition Exhibit bit D-1