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Stormwater Report~ Jomes f. Turner Engineers, L,P. JFT·E · ---· . . ·---~ Consulting Engmeers May 8, 2008 Stormwater Management Technical Design Summary Report Part I -Executive Summary The proposed Navarro West Center is located on a 2.085 acre tract at the northwest corner ofWellborn Road and Navarro Drive in College Station. The proposed development consists of an 11,990 square foot Ace Hardware tenant space 'A' building and a 7, 967 square foot Retail Center tenant space 'B'. The property is zoned C-1 . The property is owned by David Cottrell Investments, Inc., David Cottrell, 7507 Highmeadow, Houston, TX 77063, 713-78:3-5052. The stormwater calculations provrded on this day May 5, 20Q8, are prepared by Tyler N. Mackay, PE with James F. Turner Engine.ers, LP, 83.40 Meadow Rd . Suite 160, Dallas, TX 75231 , 214-750-2900. Case number on file with the city is #08-00500071 . The property is located in the Bee Creek Watershed and ·drains into one of the Bee Creek Tributaries. Firm Map Number 4'8041C0182 C; Panel 182, Brazos County. Detention is being provided to eliminate ah increase in runoff from the existing pre- developed conditions. The existing site is undeveloped, grass slight slope toward Wellborn Road. The runoff from the property to the horth i·S detained in two detention ponds and a continuous 6" curb along the pavement edge. There is also a natural ridge at our property line, inhibiting flow from the north, The prop-erty to the west drains toward Wellbourn Road. A shallow ditch runs along the ROW of Wellborn Road which collects and carries runoff to the Bee Creek Tributary located just west of our site. The proposed detention faeility is designed to tie in to the concurrent construction of a subsurface storm drainage system along Wellborn Road. A temporary pump system has been designed to be submerged within the detention pond if the TxDOT subsurface stormsewer system is not constructed. The pumps will discharge the allowable release rate for the 2-year and the 100-year storm events into the existing drainage ditch along Wellborn. This coordination has been approved by David Bruno, Project Engineer, with the Texas Department of Transportation. The Technical Design Summary Report is completed with the assumption that the detention pond will tie in sub surtace to the TxDOT storm drainage system that will be under concurrent construction. The temporary pumping of the detention pond is not taken into account in the Technical Design Summary Report since it is only a temporary DALLAS -8340 Meadow Road -Suite 160 --Dallas , Texas 75231 --214-750-2900 --Fax 214-750-2902 . ~ James F, T u.rner Engine~rs, LP. I J FTE' ~-~---'--'--'-~ "-~ • •-'-J Consuhing Engineers ~ measure for scheduling conflicts with TxDOT and will not increase the runoff from the proposed site. A two'-page Technical Design Summary Report dated May 8, 2008, one set of construction drawings (10 sheets) dated May 8; 2008, cind a specifications document dated May 8, 2008 comprise the drainage report forthi's project DALLAS -8340 Meadow Road -Suite 160 --Dallas, Texas 75231 --214-750-2900 --Fax 214-750-2902 05/08/200 ·14 :45 2147502902 TLRNER ENGINEERS PAGE 05/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Start (Page 2.1) n Professionals. lnfonnation Jurisdiction City: __ Bryan ~ College Station other contacts: Develo r I Owner I licant Information Phone and e-mail: Property Owner(s) if not Developer I Applicant (&address): Phone and e-mail: Project Identification Development Name: OJ..}~ \J)~ Ce.n Is subject property a site project. a single-phase subdivision. or part of a multi-phase subdivision? cQ.~ e.. QfD Jlfk If rnulti-phase, subject property 1$ phase __ of __ . Legal description of subject property (phase) or Project Area: (see Section II, P~r~raph B-3a) / ..l.Ji-\ _ "" .. 1 _ L~t-. l , \t>\ ~ \ or-\--, \C. \Ja.o~ ~ ~r If subject property (phase) is second or later phase of a project, describe general status of all earlier phases. For most tecent earlier phase Include submittal and review dates. General Location of ~roject Area, or subject property (pha~e): In City Limits? Extraterritorial Jurisdiction (acreage): Bryan: acres. Bryan; College Station: ___ _ College Station: '2 t b'6 S' acres. STO~MWATER OESIGN GUIDELINES Effect1va February 2007 MAY-08-2008 02:38PM From: 2147502902 Acreage Outside ET J: ___ _ Page 3 of 2e APPENDIX. D: TECH. DE:SIGN SUMMARY As Rev~---- ID:HEIGHTS VENTURE Pa9e :005 R=95% 05 /08 /2008 14:45 2147502902 Tl...RNER ENGINEERS PAGE 05/17 'SECTION IX APPENDIX D .... TECHNICAL DESIGN SUMMARY Part 2 -Prolect AdministratiQ!J I Continued (page 2.2) .. · · Project Identification (co~lnued) .. Roadways abutting or within Project Area or Abutting 1racts, platted land. or built subject property: ~. de~: ch~. $.b~U\~, \L)!.1\ ~{\ -t- WW~'(~ t-&.. ~!2A'r: ?v·\ Named Regulatory Wateroourse(s) & Watershed(s): Tributary Basin(s): ~e Ore€L. ~~ ~~Tn~ Plat Information For Project or Subject· Prc)perty (or Phase) - Prelim;nary Pia• .1~e#: N /k.rM l»lf. Final Plat File#: l.Jho~bk\.cz_ Date: Name: N ~~\w"2.. Status ~nd Vol/Pg: ll I ,6(v~le.. If two plats. second name: File#: Status: Date: Zoning lnfonnation For Project or Suh;ect Property (or Phase) Zoning Type: c..-l ~·Propo&ed? Case Code: Case Date Status: Zoning Type: Existing or Proposed? Case Code: Case Date Status: Stormwater Management Planning For Project or Subject ~roperty (or Phase) Planning Conference(s) & Date(s): Participants: ?re \twJof~~ ~~ 1C~o\~ . . - j-2.\f\t11Lw--Pn>c.~~~a fe,b 1~\ (>;o~ . I 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 devlation(s) from provisions of Preliminary Drainage Report, if any. i \')( k STORMWATER DESIGN GUIDEl.INES Effective February 2007 Page 4 of :26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised---- MAY-08-2008 02:39PM From: 2147502902 ID:HEIGHTS VENTURE Page:006 R=95% 05/08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 07/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part.,2 -Proiect' Administration I 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 agreern~~s. understandings, contracts. or approvals. Coordination Dept. Contact Date: Subiect: Wltl'l Other Departments cf Jurisdiction City (Bryan er College Station) Coordination With Summarize need(s) & actions taken (include contacts & dates): Non-jurisdiction City Needed? '/( Yes~_No __ Coordination with Summarize need(s) & actionstaken Onclude contacts S. dates): Brazos County Needed? No )( Yes -- Coordination with Summari:te need(s) & actions taken (include contacts & dates): . 'Vau\& ~(\.C> TxDOKeeded? · ~\®-· \Q("t o{. Ctx\W((W\.~ Cbu ~face. Yes No __ ~N\ &<~\(\ a:te. ~~ Coordination With Summarize need(s) & actions taken (include cont~cts & dates}: TAMUS Needed? Yes_No_J(_ . Permits For Project or Subject Property·(or Phase) As to stormwater management, are permits reciuired for the proposed work from any of the entities listed below? If so, summarize status of efforts toward that obiective in space$ below. Entity Permitttad or Approvtid? US Arrny Crops of Engineers No-2(._ Yes_ US.Environmental Protection Agency No _:f_ Yes_ Texas Commission on EnviroXentat Quality No __ Yes __ Brazos River Authl No __ Yes - STORMWATER DESIGN GUIDELINES Effective February 2007 MAY-08-2008 02:39PM From: 2147502902 Status of Actions (lnolude dates) I - Page 5 of 26 APPENDIX. D: TECH . DESIGN SUMMARY .. As Revised ___ _ ID:HEIGHTS VENTURE Page:007 R=95% 05/08/2008 14:45 214750290 2 TLRNER ENGINEERS PAGE 08/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY ~art 3 -Pro~~ Characteris!ics I Start (Page 3.1) Nature and Scope of Proposed Work .. Existiog: Land proposed for development currently used, including extent of impervious cover? D1. \~~rv\C(l; ~(l,r Site Redevelopment of one D!atted lot, or two or more adjoining elatted lots. Development "L Buildl11g on a single Dlatted lot or undeveloped land. Project _ Buildlng on two or more rumw1 adjoining lots of und.eveloped land. (select all __ Building on a single tot, or adjoining lots, where Rro11osed 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 t!latted lots. Development __ Construction of streets and utillties to serve one or more proposed lots on Project lands represented by iz!!nding !j!lats, Site projects: building use(s), approximate floor space, Impervious cover ratio. Descfibe Subdivisions: number of lots by general tyj:)e of use, linear feet of streets and drainage easements or ROW. . · · Nature and Size of 1..D'e>S ~\ ~~p~~ \.SS" a~ ~ro~sed \rYpOl(V\0)$. Project I et' t\V\t-' A\ \\, C\ 4i o s .f.-1'1u'\~(..-I 4f} 1,'°)bJ O:::..(, Is any work planned Ol'l land that is not platted If yes, explain: or on lend for which platting is not oonding? £___ No --Yes .. FEMA Floodplains Is any part of subject property abutting a Named Regulatory Watercourse ' N , L y (Section II , Paragraph 81) or a trlbUtary thereof? 0 es - Is any part of subject property in floodplain jNoL_ Yes Rate Map area of a FEMA-regulated watercourse? -- Encroachment(s) Encroachment purpose(s): __ Building site{s) __ Road crossing(s) into Floodplain areas p\(ned? __ Utility crossing(s) __ Other (explain): ' -No·~- Yes -- If floodplain areas not shown on Rate Maps. has worl< been done toward amending the FEMA- approved Flood Study to define allowable encroachments in proposed ereas? Explain. STORMWATER DESIGN GUIDELINES Effective February 2007 MAY-08-2008 02:39PM From: 2147502902 Page 6 of 26 APPENDIX. D: TECH . DESIGN SUMMARY As Revised ___ _ ID:HEIGHTS VENTURE Pa9e :008 R=95% 05/08/2008 14 :45 214750290 2 TLRNER ENGINEERS PAGE El9/17 SECTION IX APPENDl·X D -TECHNICAL DESIGN 'SUMMARY P,!irt 3 -Property Characteristics I Continued (Page 3.2) . Hydrologic Attribartes of Subject Properfy (or Pha.se) · · Has an earlier hydrologic analysi$ been done for larger area including subject property? Yes Reference the s1udy (&date) here, and attad'l copy if not a~eady in City files. fs the stoorlwater management pl~n foc the property in substantial eoriformance with the earlier study? Yes _ No __ If not, explain how it differs. If subject property l!..!!5!! part of multl-pf)ase project, describe $lormwater management l,_ i.-:-,.pl_a_n_fo_r_th~e~p~ro~p-e_rt~y_in~P~a_rt~4-·~--.J--~ ··~~~~·-:-~-:--:---~---:---~~~-:-:---;--; If property § part of multi-phase project, provide overview ~. stormwater management plan for Project Area here. In Part 4 describe how plan for subject property wilt comply therewith. Do existing topographic features on subject property store or detain n.moff? ~No Describe .them (include approximate size, volume, outfall, model, eto). I Any known drainage or nooding problems in aren near subject property? --A.. No Identify: __ Yes _Yes B:;J. on location of study property in a watershed, is Type 1 Detention (flood control) needed? (sl.,. able 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 Type 1 Detention How was determination made? must be evaluated: STORMWATER DESIGN GUIDELINES effective February 200~ MAY-08-2008 02:40PM From: 2147502902 Page 1of26 APPENDIX. D: TECH. DESIGN SYMMARY As Revised-~-- ID:HEIGHTS UENTURE Page :009 R=95% 05/08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 10/17 SECTION IX APPENDIX D -TECH~ICAL DESIGN SUMMARY Part 3 -Pro12em Characteristics I Continued (Page 3.3) Hydrologic Attrib¢es of Subject Property (or Pl\~e) (continued). ,' Does subject property $traddle a Watershed or Basin divide? _L No __ Yes If yes , describe sollts below. In Part 4 describe desion conceot for liandlina·this. Watershed or Basin Lamer acreac:ie Lesser acreac:ie . Above-Project Areas(Sectton II, Paragraph 83-a) Does Project Area (project or phase) receive runoff from upland areas? __){_No --Yes . Size(s) of area(s) in acre$: 1) 2) 3) 4) Flow Characteristics (YStJ inslan<r!l. (overland sheet, shallow concentrated, recognizable concentrated~ small creek (non-regulat~ rerory Watercourse or tributary); $~ \(\ ~\~ \ .. ~"CVl ~ ·. ~+-h ~{\ t-()1\~ C,) ~ 4u s sex-~ ~(C.\V\.~ f;·.j .. k. Flow deterrninatLon: Outline hydrologic methods and assumptions: hj&CDy~ph °)(6torm runoff draln from public easements or ROW onto or across subject property? __ No __ Yes ff yes, describe facilities in easement or ROW: .. Are changes in runoff characteristics subject to ch1nge in future? Explain No Conveyance P.ithways (Section II, Paragraph C2) Must runoff from study property d~crOS$ 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 ). "1 l fr STORMWATER OESIGN GUIDELINES Effee~ve February 2007 MRY-08-2008 02:40PM From: 2147502902 . Page 8 of 26 APPENDIX. D: TECH. DESIGN SUMMARY 118 Revised ___ _ ID:HEIGHTS VENTURE Page:010 R=95% 05/08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 11/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 3 -Prol!er!ll Characteristics I Continued (Page 3.4) Hydro logic Attributes of Subject Property (or Phase) (contin·u~d~ Conveyance P.thways (continued) Do drainage If yes, fer what part of length? % Created by?~-plat, or easements exist for any __ instrument. If instrument(s), describe their proVisions. part of 7iay(s)? No Yes -- Where runoff must cross lower properties, describe characteristics of abutting lower property(ies). (Existing watercourses? Easement or Consent aquired?) Pathway NL~· Areas .. Describe any buHt or improved drainage facilities existing near the property (culverts;· bridges, lined channels, buried conduit, swales. detention ponds, etc). c.u\ V'2-'/~ e.-\e>~ ~be< n (2~ -cD~~r,'(\ ~ M P~P-4 .Yo~ Nearby . Drainage Do any of )re have hydrologic or hydraulic influence on proposed stormwater Facilities design? No _Yes If yes, explain: ' ·- STORMWATER DESIGN GUIDELINES Effective February 2007 Page 9 of 26 APPENDIX. D: T~CH. DESIGN SUMMARY As Revised ___ _ MAY-08-2008 02:41PM From: 2147502902 ID:HEIGHTS VENTURE Page: 011 R=95% 05/08/2008 14:45 2147502902 T~NER ENGI NEERS PAGE 12/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Conce2t and Design Parameters I Start (Page 4.1) . Stonnwater Management' Coricept Discharge(s) From Upland Area(s) If runoff is to be received from upland areas, what design dr8inage features will be used to accanrnodate it and insure it is not blocked by future development? Describe for each area, flow section, or di5cherge point. NIP' Discharge(s) To Lower Property(ies) (Section 11, Paragraph E1) Does proj~de drainage features (existing or future) proposed to become public via platting? No . Yes Separate Instrument? · No Yes Per Guidetines reference above, how will Establishing Easements (Scenario 1) runoff be discharged to neighboring 7 Pre-development Release (Scenario 2) property(ies)? Combination of the two Scenarios -~ Scenario 1: If easements are propo$ed. describe where needed, end provide status of actions on each. (Atteched Exhibit # __ ) \.Jl le: Scenario 2: Provide general description of how release(s) will be managed to pre-<levelopment conditions (detention, sheet flow, partially concentrated, etc.). (Attached Exhibit# \~2.... ) e\~~ ~ ~'""' ~\\~ ok"\e.k ~ til~~~ 1~~ \~.'2.">~,t\O!)~ 9ccrft ~~.s • Combination: If combination i~ proposed, explain how discharge will differ from pre- development ~nditlons at the property line for each area (or point) of release. - ~A- If Scenario 2, or Combioation are to be used, has pro~ed de$ign been coordinated with owner(s) of receiving property(ies}? __ No Yes Explain end provide documentation. ~ ~d.\ "oil ~ ~ L>aiu\~ e,nJU> STORMWATER DESIGN GUIDELINES Effective February 2007 \,.Ii)~ Page 10 of 28 "'~ ~·~ \~?oT APPENDIX. D: TECH . DESIGN SUMMAR¥ As Revised---- MAY-08-2008 02:41PM From: 2147502902 ID:HEIGHTS VENTURE Page :012 R=95% 05 /08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 13/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage ConceRt and Design Pa11meters J Continued (Page 4.2) ·-stormwater· Managemant cancept{C:dl'.ltinuei:I) · : ... · ·: Within Project Area Of Multi..pfiase Project Identify gaining Basins or Watersheds and acres shifting: Will project result in shifting runoff between Basins or between . What design and mitig~tion is used to oompensate fot increased runoff Watersheds? from gaining basin or watershed? ..:i,._No Yes -~ How will runoff from Project 1. __ With facility(ies) involving other development projects. Area be mitigated to pre-2. __x_ Establishing features to serve overall Project Atea. development conditions? Select any or all of 1, 2, 3. __ On phase (or site) project basis within Project Area. and/or 3,.and explain b.elow. 1. Shared facility (type & location of facility; design drainage area served; relationship to size of Project Area): (Attached Exhibit# __ ) 2. For Overall Prniect Area (tYJ>e & location of facilities): (Attached Exhibit# 'b ) \)~~w__ Je+~'t-ion pb~ \o~ a,,lol\'ij V'~ ~t ~\~L t>~ F~ 3. By ph.e5e (or site) ru:plEW: Describe planned mitigation measures for pha$es (or sites) in subsequent que$tions Of this Part. Are aquatic eohosystems proposed? __ No --Yes In which phase(s) or projec:t(s)? "' "'O Q) UI c ()) ke other Best Management Practices for reducing stormv1ater pollutants proposed? :6 >-a: No Yes Summarize type of BMP and extent of use: Ill -~ --c Ol "ii) ~ .o z 1ii I If design of any n.inoff"handling facilities deviate from provisions cf 8-CS Technical "(3 <I> Specifications, check type facility(ies) and explain in later questions . 0. (/) Detention elements Conduit elements Channel features ~ ---- --<{ Swales Ditches __ Inlets -~Valley guttel'$ __ Outfalls ---- -~ Culvert features __ Bridges Other STORMWATER DE!SIGN GUIDELINES Effective February 2007 Page 11 of 26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised ___ _ MAY-08-2008 02:42PM From: 2147502902 ID:HEIGHTS VENTURE Pa9e :013 R=95% 05/08/2008 14:45 2147502902 T~NER ENGINEERS PAGE 14/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -.Drainage CQQ~em and Design Parameters I Continued (Page 4.3) · Stonnviater Management Concept (continued) Within Prgject AtO,! Of Multi-Phase Project (continu~ Will Proje.ct Alee inclu~e brtdge(s) .or culvert(s)? ~No __ Yes Identify type and general size and In which phase(s). · If detention/retention serves (will serve) overall Project Arfla, describe how it relates to subject phase or site project (physical location, conveyance pmhway(s), construction sequence): ~~~t>t\ ~ 4-b ~ ~ ~ '{IP<'~ ~ ~bt.. 't:/-Ptbp~ . -ti:> .. ~ ~ -\hr~h. i+t.. ~ Irv., ~ . Within Or Serving Subject Prop~rty (Phase, or Site) If property part of larger Project Area, is design in substantial confoimance with earlier analysis and report for larger area? _ Yes ~ No, then summarize the difference( s ): tJlk Identify whether each of the types of drainage feature:s listed below are included, extent of use, and general characteristics . Typical shape? I Surfaces? t'· "Q CD I/) Steepest side slopes: Usual front slopes: Usual back slopes: f/) :;J Q) fl) > Q) I .s::. Flow line slopes: least Typical distance from travelway: ,g 'C typical (Attached Exhibit# __ ) ~· 0 greatest ·;;; z ~ii ! i ke longitudinal culvert ends in compliance v.1th B-CS S1Bndard Specifications? < --Yes _No, then explain: "' At intersections or otherwise, do valley gutters cross arterial or collector streets? ,g 4) No Yes If yes explain: ;:; C:-• :>--~ --U 'n I = ~ I ·-;:J ;:. .,. ... Are valley gutters proposed to cross any street away from an intersection? (fl Q) -.t:: Q) ::I 0 No Yes Explain: (number of locations?) ~;~ --- ~ ~ STORMWATER DESIGN GUIOELlNES Effective February 2007 Page 12 of26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised ___ _ ' MAY-08-2008 02:42PM From: 2147502902 ID:HEIGHTS VENTURE Pa9e :014 R=95% 05/08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 15/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Orajnaqe Concept and Design Parameters J Continued (Page 4.4) ··stormwater Management Concept (continued) Within Or Serving Subiect Property (Phase, or Site) (continued) C"• -0 Gutter line slopes: Least . Usual Greatest . Are inlets reces~d on arterial and collector streets? __ Yes identify where and why. __ No lf ''no". Will inlets capture 10-yHr design stormftow to prevent flooding of intersections (arterial with arterial or collectoi;)? __ Yes _No If no, explain where and why not. ~ => Will inlet size and placement prevent exceeding allowable water spread for 10-year Si design storm throughout site (or pha$e )? __ Yes _ No If no, explaln. 'S OJ ~ 1' ·. ~ g Sag curyes: Are inlets placed at low points? _Yes __ No Are inlets and B 'E conduit sized to prevent 100-year stormflow from ponding at greater than 24 inches? .t=. 8 _Yes __ No Explain "no• answers. := ~ :!: !J 4l e u; w Wiii 100-yr stormflow be contained in combination of ROW and burled conduit on -< whole length of all streets? _Yes _No If ho, describe where and why. C"· 'O Ql I/) If) Q) ~>-I ~ 111 >. 111 Do designs for curb, gutter, and inlets comply with B--CS Technical Specifications? _Yes _No If not. describe difference(s) and attach justification. Are any 12~i nch laterals used? No used. ~ __ Yes Identify length(s) and where Pipe runs between system I Typical Longest access points (feet): --------- Are junction boxes used at each bend? and why. _Yes _No If not, explain whete .!: 0 1-11t--~-~~~--~-~~-~--,.-.-~~~--:-:--:-~~ en '1 Are downstream soffits at or below upstream soffits? Least amount that hydraulic !!J. Yes ~ No __ If not, explain Where and Why: grade ine is below gutter line (system-wide): STORMWATER DESIGN GUIDELINES Effective February 2007 MRY-08-2008 02:43PM From: 2147502902 Page 13 of26 APPENDIX. O; TECH. DESIGN SUMMARY No Re!vised ~--- ID:HEIGHTS UENTURE Page:015 R=95% 05/08/2008 14:45 2147502902 TLRNER ENGINEERS PAGE 15/17 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4-Drainage Concept and Design Parameters j Continued (Page 4.5) Stormwater Man111gement Concept (continued) Within Or Serving Subject Property (Phase, or Site) (continued) ('· .!9 Ql Ql 1§ (!! Q. Q) IJ) c: 0 - . Pescribe watercouru(s), or system(s) receiving system discha~e(s) be_l0w (include design discharge velocity, and angle-between converging flow hr.es). 1) Watercourse (or system), velocity, and angle? 2) Watercourse (or system), velocity, and angle? 3) Watercourse (or system), velocity, and angle? For each outfall above. what measures are taken to prevent erosion or scour of receiving and all facllitie$ at juncture? 1) 2) 3) Are swale(s) situated along property lines between properties? __ No __ . Yes Number of instanoes: ___ For each in$tance answer th~ following questions. Surface treatments (including low-flow flumes if any); !£ fll iii ~ Flow line slopes (minimum and maximum): ~ I .9 ~ f Outfall characteristics for each (velocity, convergent angle, & end treatment). ~I rJ) ~ -t 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 Effective February 2007 MAY-08-2008 02:43PM From: 2147502902 Pag~ 14 of26 AflPENOIX. D: TECH. DESIGN SUMMARY As Revised---~ ID:HEIGHTS UENTURE Pa ge:016 R=95% 05/08/2008 14:45 2147502902 T~NER ENGINEERS PAGE 1711 / SECTION IX APPENDIX D ·-TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concel!t and De1ig!! Parameters I Continued (Page 4.6) Stormwater·Management Concept (continued) .. Within Or Serving Subject Property (Ph.ase, or Site) (continu•d) . ~ . "' file roadside ditches used? h~ No __ Yes If so, provide the following: Ill Is 25-year flow contained with i ches cf treeboerd throug'IOut? ~-Yes _ No .r:. Are top of banks separated from road shoulders 2 feet or more? __ Yes No .B --i5 Are all ditch sections trapezoidal and et least 1.5 feet deep? Yes No Cl) "Q For any "no" answers provide location(s) and explain: er; 'O Cll 0 a: If conduit is beneath a swale, proVide the following information (each instance). lnst1nc;11 Describe· general location, approximate length: gj >-· Is 100-year design flow contained in conduit/swale combination? Yes No Ii ~-If "no" explain: c: 0 Ill Eesement Width ~~ Space for 100-year storm flow? ROW_ -Swale Surface type, minimum Conduit Type and size, minimum and maximum 0 and maximum slopes: slopes, design storm : :;;I "" ·-<I> "O -"Cl w Ill i::; ~ Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): c:; m i:: .c Ill u .... I=£ QI c: g,, 0 0 :.= Access Describe how maintenance access is provided (to swale, into conduit): ..... (!I 0 E :;:J ... a> .E :.::: .s .s 0 -g E lnsta11ce 2 Describe general location, approximate length: Cll Ill ti! ::I Ill Ill c "Q 0 "> Is 1 OQ...year design flow contained in conduit'swale combination? Yes No '..;;; e ----"' If "no• explain: c:; Q_ :c Qi E II) 8 ..: Space for 100-year storm flow? ROW Easement Width Ill -~ ~ Surface type, minimum ConduLt Type and size, minimum and maximum ·3 "O ! and ma}(imLm slopes: slopes. design storm: c: ~ Q) a; UI Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): iii c: ~ .£ e! <( Access Describe how maintenance access is provided (to swale, into conduit): STORMWATER DESIGN GUIDELINES Effective February 2007 Page 15 or 26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised---- MRY-08-2008 02:44PM .. From: 2147502902 ID:HEIGHTS VENTURE Pa9e:017 R=95% 05 /08/2008 15:19 2147502902 T~NER ENGINEERS PAGE 02/15 SECTION IX APPENDIX D -TECHNICAL DE~IGN SUMMARY Part 4 -Drainage Concept and Design Parameters ! Continued (Page 4.7) . · st"Olmwater Management c~ncept:(contlriued) · Within Or Serving Subject Property (Phase, or Site) (continued) i::: :m E ~ 0 w If •yesr provide the following Information for each. instance: Instance 1 Describe general le>OQtiOl"I, approximate length, surfacing: ~ I---:-::~--';""'~~~~'--:-.,....,-~~.,_~---:-:-----:-:-~--:---:~~~ ~ in I~ 100-year design flow contained in swale? __ Yes No Is swale wholly c: >-Ill within drainage ROW? _Yes ___ No Explain "no" answers: .i 1 l-----~------------------------1 fll Aotess Describe how maintenance-acce$$ is provide: j~o 0 .1--ln_s_~_n_ce_,.2.....,,.D-es~c~ri~be~gene~-ra-l-.~-cat~~-n-,-ap-p-r-ox-im........,at~e-le_n_g_th-.-su-rl~a-c~in-g-:-----~ °ti QI 'C: C"• _g ~ -Ql 8 E ~ Ql 1--............ ---.,.......,----.,...~----~~--~~----~~---:---:-----:-:-:~~ ~ 1{l Is 100-year design flow contained in swale? Yes __ No Is swale wholly t1> Ill within drainage ROW? -~Yes __ No Explain ''no· answers: ~ 0 Ill .;;:: := -~ 0 .._,...~~ ........ --..,.,-....,.....~--,~--~~--:--.__,.~.--~--------~ :=.= o:: Access Describe how maintenance access is provided: 3: ~ :s 0.. Instance 3, 4. etc. If swales ere used in more than two instances, attach sheet providing all above informatioo for each instance. ''New" channels: Wll any area(s) of concentrated flow be channelized (deepened, widened, or straightened) or otherwise altered? __ No __ Yes If only slightly C"· shaped , see "SWallils" in this Part. If creating side ban.ks, provide information below. ] c 1--.....;..~~-----------=-~--....;.,_;,.;. ____ ~~~~~-1 v> t11 Will design replicate natural channel? Yes No If ''no". tor each instance 8.. Ci. describe section shape & area, flow line slope (min.&niax.), surface$, and 100-year [ iri design flow, and amount of freeboard: .!? jg Instance 1: ~ >-' I I Q. Instance 2: ~I Instance 3: (,,) STORMWATER DESIGN GUIDELINES Effective February 2007 MRY-08-2008 03:11PM From: 2147502902 Page 16 of26 APPENDIX. D: TECH. DESIGN SUMMARY A1' Revised---- ID:HEIGHTS VENTURE Page:002 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 03/16 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 ... Drainage Conce~t and Design Paramete.J!. I continued (Page 4.8) .. StQnnwater:Manag1ement "co.ncept .(~ntinued) Within Or Serving Subj~ct Prop~rty (Phase, °""Site) (continued) ~il1ID51 ~i!Dnel! l&:m1ll creeks)i Are these used? -X--No --Yes If "ves• provide the Information below. Will. small creeks and their floodP!ains rem'ain 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 1 OD-year design flow. -" (I) :I ,!:;: c: Water50urses <and tribu.tatjesl:, Aside trf' fringe changes, are Regulatory .§. Watercourses proposed to be altered? __ No __ Yes Explain below. $ Submit full report describing proposed changes to Regulatory Watercourses. Address f;; (I) existing and proposed section size and shape, surfaces, alignment. fbw line changes, E IP length affected, and capacity, and provide full docum~ntatlon of amalysis procedures > e and data. Is full report submitted? __ Yes ~-No If "no" explain: Q. E N(Pc Cl) ~ c: ~ !!I Proeosed Cba!lnel Work: For all proposed channel work, provide information ..c: (.,) requested in next three boxes. If design is to replicate natural channel, idehtify locaition and length here, and desctibe. design in Special Design section of this Part at Report. NlA Will 100-year flow be contained with one foot of freeboard? --Yes --No If not, Identify location and explain: J I Nl/t Are ROW f easementi:rsized to contain channel and required maintenance space? --Yes __ No If not. identify location(s) and txplain: tJ( A. STORMWATER DESIGN GUIDELINES Effective February 2007 Page 17 of 26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised ___ _ MAY-08-2008 03:11PM From: 2147502902 ID:HEIGHTS VENTURE Pa9e:003 R=95% 05 /08 /2008 15:19 214750290 2 TLRNER ENGINEERS PAGE 04/16 SECTION IX APPENDIX D -TECHNICAL DESl·GN SUMMARY Part 4 -Drainage Conceet and Design faram!l•C! J Continued (Page 4.9) : : · .:.stotm1'ater Manageme~t:·c~n~-(~~ntinUed) ... . Within Or Serving Subject Property (Phase, or Site) (continued) How many facilities for subject property project? ....:J_ For each provide Info. below. For each ·dry-type facilitiy. Facility 1 Facility 2 Aa'es served & design volume + 10% '2..o~~ \\S't<O 1 DO-yr volume: free flow & plugged \oi-g<. Design discharge ( 10 yr & 25 yr) 5.4 G.t~ U,:2..~ Spillway crest at 100-yr WSE? __ yes -~ no __ yes --no Berms 6 inches ebove plugged WSE? __ .yes _::A_ no __ yes --no Explain any "no• answers: , .... \~ ~ EfV\e<c)~ ov..;y\~ ''i ~~\.\ 1-h"- I/) o\l-t\e~ ~ . +h~ .\-op * +h.e.. ~. ~1 For each f.acility what is 25-yr design a, and design of outlet structure? 0 Facility 1: z I Facility 2: Do outlets and spillways discharge into a public facility in easement or RCNV? C'• Facility 1: X.. Yes __ No Facility 2: --Yes -No ~ If ·no" explain: 0 Cvt-le+ -Hes \ f\ ~"S.>~ac.e ~ 1)(. i)6 \ <b.-h:rfT'\ c~O:hv-Q. !2 ~\\.-e.w" ,. ~ ~ "~£.-' o~ \~ ~~ ~ ,~~ •. .:..!.= .1~" ll. (I) For each, what is velocity of 25..f; design discharge at .QY!!m? & at spillway? ~ Facility 1: 3..S fit~ & N A FaoHity 2: & 'G Cll />J"e energy dissipation measures used? ~No Yes Descrlbe type and u.. --c location: .9 E .l!l Cll Q al < For each, is spillway surface treatment other than concrete? Yes or no, and describe: Facility 1: \J It\ Facility 2: For each, what measures are taken to prevent erosion or scour at receiving facility? Facility 1: NL~ Facility 2: If berms are used give height$, slopes and surface treatments of sides. Facifity 1: Facility 2: NIA- STORMWATER DESIGN GUIDELINES Effective February 2007 Page 18 of 26 APPENDIX. D: TECH. DESIGN SUMMARY As Revised--~- I ! I MAY-08-2008 03 :11PM From: 2147502902 ID:HEIGHTS VENTURE Page:004 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 05/16 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concept and Design Parameters j continued (Page 4.10) Ston,nWater.'Management Concept .(continued>• Within Or Serving Subject Property (Phase, or Si~e) (continued) :rl .. :e ~ u Q) r;'ll ::I LL. c:; J: ~ Do structures comply with B-CS Specifications? Yes or no, and explain If •n o": Fac11ity 1; ,1e~. Facility 2: ;g a ~~ ~---------------~~--~-----.......;..~----------~ ~ For additional facilities provide all same Information on a separate sheet. Are parking areas to be used for deten1ion? _K_ No __ Yes What is maximum depth due to required design storm? Roadside OJtches: Will culverts serve access driveway9 at roadside ditches? X No Yes If "yes", provide infonnation in next two boxes. Wiil 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 t:--rn g> Explain any "no' answers: 'iil ~ Are culverts parallel to public roadway alignment? __ Yes ____ No Expla in: u II) J!! ~ ·~Q. 1~--=--~:""':"-,--=-:--~.....---.,..._...,....,.....,....,....~~...,.,...,.....--,.--...,---.,.....,------...-i Creeks at Private Drives: Do private driveways, drives, or streets cross drainage Cii W~Y)l that serve Above-Project areas or are in public easements/ ROW? i ~ X. No __ Yes If •yes· provide information below. E.11 : "f\. How rnany instances? Describe location and provide information bf:low. j Location 1 : ::J u I!? Loestion 2: ~ Location 3: For each location enter value for: Design year passing without toping travelway? Water depth on travelway at 25-year flow? Water.depth on travelway at 100-year flow? 2 3 For more instances describe location and same information on separate sheet. STORMWATER DESIGN GUIDELINES Effective February 2007 MAY-08-2008 03:12PM From: 2147502902 Page 19 of26 APPENDIX. D: TECH. DESIGN SUMMARY As R@Vised ----- ID:HEIGHTS VENTURE Pa9e:005 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 05/15 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concept and Design Parameters . I Continued (Page 4.11) Stormwater Management Concept.(eontinu@d) Within Or Serving Subject Property (Phase, or Sit@I (continued) ... ~ .. med RA11Ulatorv watereoun1~ I& Tributariesl: Are culverts proposed on these facilities? __:6_. No __ Yes, then provide full report documenting assumptions, criteria, analysis, computer programs, and study findings that support proposed design(s). Is repon provided? __ Yes __ No If "no", explain: Arterial ot Ma•nr CQlleetor streets: Wiii culverts serve these types of roadways? ~No __ Yes How many instances? For each identify the location end provide the information below. Instance 1: Instance 2: Instance 3: Yes or No for the 100-year design flow. 2 3 Headwater WSE 1 foot below lowest curb top? Spread of headwater within ROW or easement? Is velocity limited per conditions (Table C-11 )? Explain CV'IY •no" answer($): Mingr Collector or Local Streets: Will culverts serve these types of streets? X No __ Yes How many instances? for each identify the location and provide the infomiation below: Instance 1: Instance 2: Instance 3: For each instance enter value, or "yes• I "no• for. 2 3 Design yr. headwater WSE 1 ft. below curb top? 100-yr. max. depth at street crov.m 2 feet or less? Product of velocity (fps) & depth at crown (ft) =? .8 Is velocity limlted per conditions (Table C-11)? ~ 1---~~----~~~----~~--'----+--~--+------+------~ Limit of down stream analysis (feet)? Explain any •no" answers: STORMWATER DESIGN GUIDELINES Effective February 2007 MRY-08-2008 03:12PM From: 2147502902 Page 20 of26 APPENDIX. D: TECH. DESIGN SUMMARY A$ Revised~--- ID:HEIGHTS UENTURE Page:006 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 07/16 SECTION-IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concee,! and '21!19D Parameters I Continued (Page 4.12) .. . Stonnwater Manag•ment Concept (continUed) " .. . . Within Or Serving Subject Property (Ph•se, or S.ite) (continued) All Proposed Culwrl&.i For all proposed culvert facilities (except driveway/roadside dHch intersects) provide informatipn requested in ne><t eight boxes. Do o.dverts and travelways intersect at 90 degrees? __ Ye$ __ No lf not, identify location(s) and intersect angle(s)·, and justify the· desigrl(s): · Does drainage way alignment change within or near limits of culvert and surfaced approaches thereto? __ No --Yes If "yes" identify looation(s), describe change(s), and justification: Ale flumes or conduit to discharge into culvert barrel(s)? __ No __ Yes If yes, identify location(s} and provide justifica~on: ....... Are flumes or conduit to discharge into or near surfaced approaches to culvert ends? 'C dl No Yes lf"yes' identify location(s), describe outfall design treatment(s); ::l --i:: ~ •.;;;; c: ~ !1 ] :s ls scour/erosion protection provided to ensure long term stability of culvert structur~I u components. and surfacing at culvert ends? ~Yes __ No If ·no" Identify locations and provide justffication(s): Will 100-yr flavv and spread of backwater be fully contained in street ROW, and/or drainage easemerits/ 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 mees1Ses: ' Are all culvert designs and materials in cornpliance with a.cs Tech. Specifications? --Yes --No If not, explain in Special Design Section of this Part. STORMWATER DESIGN GUIDEl.INES Effective February 2007 Page 2.1 of 26 APPENDIX. 0: TECH. DESIGN SUMMARY As Revised ___ _ MAY-08-2008 03:12PM Fr om: 2147502902 ID:HEIGHTS VENTURE Page :007 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 08/15 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drain.1ge Conce...J!! and Design _Parameters I Continued (Page 4.13) Stormwater Management Concept (continued) Within Or Serving S&Jbject Property (Phase, or Site) (continued) 1 Is a bridge included in plans for subject property project? A-No --Yes If "yes" provide the fellowing information. · Name(s) and functional clas$lfication of tht roa~y(s)? What drainage way(s) is to be crossed? ..... "' ar Ol :g aJ A full rePort supporting all aspects of the proposed bridge(s) (structural, geotechnical, hydrologic, and hydraulic factors~ must accompany 1his sumr,nary report. I$ the report provided? __ Yes _ No If "no" explain: Is a Stomiwater Provide a general description of planned techniques: -~ Pollution Prevention Cij Plan (SW3P) ~l~ tAj :::i 0 established for ,_ zct construction? (I) Wt~tr rn ?; No __ Yes . Special Designs-Non-Traditional Method~ Are any non-traditional methods (aquatic eehosystems. wetland-type detention, natural stream ~cation, BMPs for water quality, etc.} prop0$ed for any aspect of subject property project? No __ Yes If "yes• list general type and location below. ' .. Provide full report about the prop0$ed 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? STORMWATER DESIGN GUIDELINES Effective February 2007 -Yes -- Page 22 of26 No If "no" explain: APPENDIX. 0 : TECH. DESIGN SUMMARY As Revised ___ _ I MAY-08 -2008 03 :13PM From: 2147502902 ID:HEIGHTS VENTURE Page:008 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE l'.l':::l/lb SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Conceet and Design Pammeters I Continued (Page 4.14) Stormwater· M11nagement Concept" (continued) Within Or Serving Subject Property (Phase, or Site) (continuedl Special Designs -Deviation From B-CS Technical Specifications It any design(s) or material(s) of traditional runoff-handling facilitie!S deviate from provisions of B-CS Technical Specifications, check type taoillty(ies) and expl~in by specific detail ·eternent Detention elements ~Drain system elsments --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). Spectfic Detail Element Justification for Deviation (attach additional sheets if needed) 1) 2) .. 3) 4.) 5) Have elements been coordinated with the City Engineer or het/his designee? For each item above provide •yes" or "no'', action date. and s.taff name: 1) 2) 3) 4) 5) Design Parameters Hydrology Is a map(s) showing all Design Drainage Areas provided? ...:!:::_Yes --No Briefly summarize the range of applications made of the Rational Formula: \Z&hof\a\ ~J<. v~ .\-o ~~~'~€.. \-'"'~ + cJr ~\ b""' \'\'fl r) ~ ·j •~p\-\.s for ~~ s~~- What is the size and location of largest Design Drainage Area to which the Rational Formula has been applied? '2.. O(\ S aaes Location (or identifier): STORMWATER DESIGN GUIDELINES Effective Februer/ 2007 MRY-08-2008 03 :13PM From: 2147502902 . Page 23 of 26 APPENDIX D: TECH. DESIGN SUMMARY As Revised-~-- ID:HEIGHTS VENTURE P age :009 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGINEERS PAGE 10115 SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concel!t and Design Parameters I Continued (Page 4.15) Design ·Parameters .(continued) Hydrology (continued) l:'.t:king determinations for time of coneentretion, was segment analysis used? No Ye~ In approximately what percent of Design Drainage Areas? % ~ to intensity-duratioo-frequency and rain depth criteria for determining runoff flows, were any criterla other than th0$e provided in these Guidelines used? __ No ~_Yes If "ye$" identify type of data, SO!.jr¢e($), and where applied: For each of the stormwater management features listed below identify the storm return frequencies (year) analyzed (or checked), and that used as the basis for design. Feature Analysis Year(s) Design Year Storm drain system for arterial and collector streets Storm drain systern for local streets Open channels SWaletburied conduit combination in lieu cf channel Swales Roadside ditches and culverts serving them Detention fecilities: spillway crest and its outfall Detention facilities; outlet and conveyance stnlct1.1re($) Detentlon 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) ""I"' NIP\ l'l / i\ NIA Lowest (feet per second) ti.tlk "'ltt NI ,.\-NI~ Street$ and Storm Drain Systems Provide the summary Information outlined below: Roughness coefficients used; For conduit type(s) D.\'3 STORMVVATER DESIGN GUIDELINES Effective February 2007 MRY-08-2008 03:13PM From: 2147502902 For street gutters: "'i ~ Coefficients: Page 24 of26 APPENDIX. 0; TECH. DESIGN SU~ARY As Revised ___ _ ID:HEIGHTS VENTURE Pase:010 R=95% 05/08/2008 15:19 2147502902 TLl'1NER ENGINEERS PAGC. 11/lb SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 -Drainage Concel!t and Design Param.@l!HI I Continued (Page 4.16) Design Pdrameters (continuect} . Hydraulics (continued) Stt~t and Stonn Drain Systems (continued) For the following, are assumptions other th21n a1io1NBble 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 hydraulie 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 loeation and explain: Open Channels If a ~r:c analysis Is uttlized, does it follow Sec VLF.5,a? __ Yes __ No Outside of straight sections, is flow regime within limits of sub--Oritical flow? __ Ye~ __ No If ''no" list locations and explain; Culverts If plan sheets do not pro11ide the following for each culvert, describe it here. For each design discharge, will operation be outlet (barrel) control or inlet control? \ Entrance, ftietion and exit losses; ' Bridges Provide all in bridge report SiORMWATER DESIGN GUIDELINES Effective February 2007 MRY-08-2008 03:14PM From: 2147502902 Page 25 of 26 APPENDIX. D: TECH. DESIGN SUMMARY N> Revised---- ID:HEIGHTS VENTURE Page:011 R=95% 05/08/2008 15:19 2147502902 TLRNER ENGI NEERS PAGE 12/lb SECTION IX APPENDIX D -TECHNICAL DESIGN SUMMARY Part 4 ';" Drainage Concem and Design Parameters I Continued (Page 4.17) :Design ·Parametei's ·fc0ntinu.•d)· .. ·.<· Computer Sottware What computer software has been used in the analysis and assessment of storrnwater management needs and/or the development of facility designs proposed for subject property project? List them below, being sure to identify the software riame and version, the date of the version, any applJcable patehes and the piJbUsher Part 5 -Plans an~ S(!eciflcations Requirements for submittal of construction drawings and specifications do not differ due to use of a Technical Design Summary Report. See Seetion Ill, Parsgraph C3. Part 6 -ConclusiODS and Attesta~on Conclusions Add any concluding information here: Attestation Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical Desian Summarv Drainage Recort by Sl!:minci and sealinQ 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 wffh proVisions of the Bryan/College Station Unified Drainage Design Guidelines for the owners of the properly. Alf ficenses "nd permits rttquired by any and all state and federal regulatory egencies. for the proposed drainage improvements have been issued or fall under applicable gef18ral permffs. '' -ry\e.c N. M~\,t:.~ Ucensed Professional Engineer State of Texas PE No. 9lP51o STORMWATER DESIGN GUIDELINES Effective Febn.1ary 2007 MAY-08-2008 03 :14PM Fr om: 2147502902 F'age 26 of ;26 (Affix Seal) APPENDIX. D: TECH. DESIGN SUMMARY As Revised---- ID:HEIGHTS UENTURE Page:012 R=95% 3: D -< I IS) m I ru IS) IS) m IS) (,J f-.' (J1 -u 3: 'l ' 0 3 ru f-.' .t> --i (J1 IS) ru ~ rt) H 0 I m H G'l I -i (/) c m z -i c ;u m -u Ill ,g 11) IS) f-.' (,J ;u II I.!) .t> ~ STAGE-DlSCHARGE SUMMARY STAGE f:LO\I THRU F"LD\t/. THRU F'LO\t/ THRU FLOW' THRU TOTAL 2YR PERFORATIONS lOYR PERF"OIM TIDN 25YR PERFCRA TIDN lOOYR PERF'DRATION RELEASE CF'T> CCF"S> <CF'S) CCFS> <CFS> <CFS) 28~ 0.27 ---0.27 296 1.01 ---1.01 287 1.61 ---1.61 2VR STORM EVENT 297.77 1,9 ---1.9 -·· 299 1.98 0.01 --1.99 lOYR STORM EVENT 2BS.52 2.15 0.77 --2.92 25YR STORM EVEN 288.91 2.27 1.6 0.67 -4.54 289 2.29 1.79 0.83 -4.91 10DYR STORM EVENT 289.'57 2.4:5 2.83 1.01 0.19 7.28 r ~ James F. Turner . Engineers, LLC. STAGE~OISCHARGE SUMMARY ~;:;.·-NAVARRO \\EST CENTER . . It=:= --:irm. .... -CAil I --C>D l • T.N.W. i ..... T.UI. HEIGHTS VENTURE ARCHITECTS I DATE• 5/8/08 ALLO\IAltLE RELEASE CCf"S) 3.9~9 :5.398 6.167 7.281 " EXHIBIT-1 (5) U1 ....... (5) CD ....... f\) (5) (5) 00 I-' U1 I-' LD f\) I-' "'" --.J U1 (5) f\) LD (5) f\) -i ~ z ~ fTI ~ H ~ fTI Al U1 "1J I> {j) fTI I-' w ....... I-' CJ) 3: D -< I (S) co I ru (S) (S) co (S) L.J " .., 0 3 H 0 I rn H G) I -I CJ) c rn z -I c :;u rn :;u II \.D (J1 . ~ EMERGENCY OVERFLDIJ STANDARD INLET FRAME & CCJVER BRASS 8c HAYS NO. 184L lJR EQUAL ~~~:::;:;;~;;;:;:;~ EL 289.57 100 YEAR 'JSE ----EL 288.91 25 YEAR \./SE THREADED CAP #4 BARS lJN 12· a.c.B.'W. EACH FACE & BOTTOM .,-------2•-14 GAUGE STRAP <GALVANIZED>, 'IJITH 1/4" •.---e---_...::;...[L 288.52 10 YEAR VSE TITEN HEX HEAD SCRE'W ANCHORS INTO CONCRETE, 1 112' EMBEDMENT DEPTH, VRAPPED ONCE ARDUND 6'!4 STANDPIPE. CLEAN COARSE GRADED 3.5* AGGREGAT 1•-3' ® .. . , _ '.'"" ... ~ ... 0~5~ ,_ .. --284.so 6'¢ -.. •· . . . . . ·.'-· ........ ·. 18'~ CLASS III pzzz:;ZZZ4::zz:Zb~;;;;;;;;;~~~~~~~~0~ CONCRETE FLUME 2'(0 PVC VITH PLUG AT EL 284.25 WRAP ALL 3 RO\i/S OF CD THE NUMBER or PERFORATI~s SHALL BE ocsIGNED ra REL£ASE THE 2 Y£AR RAINFAfrF°Jtm VITH F"ILTER rABRIC Rn\/ 1i 4-c'~ HULES, RCllJ 21 3-2~ HDLES, RO\/ Ji 4-2'-ID.£S @ SIZE aRirICE TCl PERMIT R£L£AS£ [f 2 YEAR RAIHF ALL EVEIH. @ OOTfLU\i PIPE DIAMET£R SHALL BE SIZED m RELEASE THE 100 YEAR PREDEVElUPEil FUl\J AT 11-1£ D£S1GN 100 YEAR \ISEi CLASS m RCP. © Sil£ VEIR DVERf L[JV aPrnING TCl PERHIT RELEASE [J 100 YEAA FUJ\I, @ SIZE ORIFICE rn PERMIT RELEASE OF 25 Y£AR RAINFALL EVENT. © SIZE DR!fICE TU PERMIT RELEASE or 10 YEAR RAINFALL EVENT. 1 James F. Turner ~ Engineers, LLC. DETENTION POND OUTLET STRUCTURE · .... ~Eh..~-NAVARRO YIEST CENTER EXHIBIT-2 ::== --Zlm I DATE1 5/8/0B HEIGHTS VENTURE ARCHITECTS -CM> I-· CM) I • T.!U. '..,... TJU . ...... Ul ,...... lD -I ~ z fT1 ;u fT1 ·z G) H z rn fT1 ;u CJ) lJ I> G1 f1l 2147502902 TL..RNER ENGINEERS PAGE 15/lb 05 /08/2008 15:19 Tc:~ 290.10, ... ·-··-· .. --....... -... ··-* ! ' I i ' MRY-08-2008 03:15PM From: 2147502902 I ·~ , . . --" (:iz ::i: i -11. ; :; (.) : !' t:: II '; ~ .. ···rr· .. ,. ,,. .. i I; ,1.' (.l~N;. ,'"';.I ' ... ,-; 0 I 1 . ':! .,_ I ,I u II > . ~l.IW'"" --~-.JI __ 0 ii: ' ' CJ>·., 1" ... ~llr-1 --- N ' .. 'J I: s ,\ O!..ll i ri ~ : ~!:.'. i,! ~1 ~II ,i! ~·~II Tc291 0 o 't....11 i ~, I _I ' 0.. 0 . I ! '.Z "''\ : ' ~: I TEMPORARY GRAVEL . ;J: !!DRIVE AS REQUIRED POND Jarnes F. Turner ~ Engineers. LLC. ,... JFTE,1 £:.;_qr .. ~ ~=== ....... ZBD. DETENTION L-NA_V_ARRO_WE_ST_CENTER _____ ----t EXHlBIT -3 "-__.--CM--1D191--CAD-....- 111 -T-.K-.lil-. ~wro-T .-... -.,.-t tE l GHlS VENTURE DATE• 5/8/08 ro:HEIGHTS VENTURE Pa9e:015 R=95% Navarro West Center -Plan Comment Reply May4, 2008 Plan Review Reply Itemized Narrative Section. RE: sheets A 1.0-Site Plan, A 1.01 -Site Details, A2.0-Building Elevations, C2.0- Erosion Control Plan, C4. 0-Grading Plan, and CB. 0-Utility plan, (italics plans not available until 05-08-08) PLANNING: 1. The end island just south of the driveway from Wellborn Road states that it is 275 square feet in area: but is smaller than islands labeled 180 square feet. Please correct. The correct area is shown as 280 s.f. (one parking space had to be deleted). 2. The minim um end island is 180 square feet The parking has been modified slightly so that all parking end islands are minimum 180 s.f. (also one parking space had to be deleted). 3. Are the number of breaks in the curb shown adjacent to the detention pond needed? The curb breaks are necessary for the design; however we have reduced their quantity and size to the minimum allowable by engineering standards. (4 breaks of 2' wide each). 4. Parking spaces that are only 18' in length require a minimum clear space of 2' at the end of the space. The parking spaces adjacent to the detention pond will not have the minimum clear space because screening is required around the detention pond area. The sidewalk on the northwest (side of building) was reduced to provide a full 20' depth stall. 5. "Compact" parking spaces are not permitted. 18-foot spaces are permitted, but cannot have a wheel stop and must have 2' clear space at the end of the space. The compact cars are revised to be full 20' depth spaces, with wheelstops. Bollards have been added for direct building protection as discussed in the facilitation meeting. 6. Interior parking islands are required in the interior parking rows. 180 sq. ft. of area per 15 spaces. The interior island has been provided as discussed in the facilitation meeting. The end island for that row is shown at 210 s.f. , which includes the accessible sidewalk thru it, as allowed by the ordinance. 7. Fire hydrant at the rear of the property does not appear to be accessible because it is located behind a dumpster enclosure. The fire hydrant has been relocated to be directly in line of sight and access to the fire lane. Located in the recorded P.U.E. 8. Please provide the inside clear dimensions of the dumpster enclosure -minimum 12'x12'. The detail should be located on the site plan. I believe the detail currently shows a bollard. Bollards must also be out of the clear area. The inside clear area of the dumpsters, including bollard clearance has been changed to 12'-0" x 12"-0". The site plan and dumpster details have been corrected. 9. Dumpster material must match building. The dumpster enclosure material finish has been changed to the same brick used for the building. 10. The vicinity map is not readable. The vicinity map is revised. 11. Under "Code Analysis" it states "zoned C-2." Property is zoned C-1. The correct zoned description of the property has been added. 12. The parking analysis states that you are providing parking for a "storage area." I believe that this area is a sales area. The parking analysis was using the wrong term and has been corrected. 13. The street name is spelled "Wellborn." The street name has been corrected. 14. Please include the proposed legal description (lot and block by new plat) in the title block. The lot, block, by new plat has been added to the titleblock. 2 HOUSTON llll Horth Loop West Suite 000 Houston, Telas 77008 nJ.869.lHB V 713 .869.5573 F OALLA!: 15851 Dallas Parkway Suite 1060 Addison, Texus 75001 972.490.7292 v 972490.7444 F CHICAGO 308 Weil Stote Street Sui1e 125 Rockford, Illinois 61101 847.472.9780 v 815.966.2430 F Navarro West Center -Plan Comment Reply May4, 2008 15. Please include zo.ning of this and all adjacent properties. The adjacent properties zoning description has been added to the plans. 16. Please show distances to opposite and adjacent driveways. The opposite driveways are indicated with dimension. 17. Driveway width is measured at the property line. Please provide this dimension on the plan. The driveway width has been revised to show at the property line. 18. Please include curb return radii The curb return radii is shown on the plan. 19. Please include the curb and pavement detail on the site plan. Standard details can be found in the Site Design Standards. The curb and pavement details are provided on the Site Details Sheet A 1.01, requested to be included with the site plan as discussed in the facilitation meeting. · 20. Please include the bicycle rack detail on the site plan. Standard details can be found in the Site Design Standards. The bicycle rack details and specification are provided on the Site Details Sheet A1.01, requested to be included with the site plan as discussed in the facilitation meeting. 21. Please include utility information on the site plan; it is not necessary to provide the extra sheet. The utility information has been transferred to the Site Plan. 22. Provide a general note that "all roof and ground-mounted mechanical equipment shall be screened from view or isolated so as not to be visible from any public right-of-way or residential district within 150' of the subject lot, measured from a point five feet above grade. Such screening shall be coordinated with the building architecture and scale to maintain a unified appearance. The general note has been added. The screening is achieved by the continuous high parapet around the entire roof. 23. Please note that any changes made to the plans, that have not be requested by the City of College Station, must be explained in your next transmittal letter and "bubbled" on your plans. Any additional changes on these plans that the City has not been made aware of will constitute a completely new review. There are no changes included in this submittal that have not been made aware to the reviewers during the planning meeting or following phone discussions with the City Engineering Department. Reviewed by: Jennifer Prochazka Date: April 7, 2008 LANDSCAPING: 1. "Mulch" is not an approved ground cover. It may be used within planting beds, but is not appropriate as a stand-alone ground cover, as is shown in the "mulch strips." Mulch will not be used on this project. Plants have been spaced to allow access to cut grass. 2. Please provide required detention pond screening (Section 7.9). The detention pond screening has been added. 3. Please show detention pond. The detention pond contours are shown on the landscaping plan. 4. Please provide required detention pond screening information. The detention pond screening information is shown. 5. It appears that the detention pond is in the required buffer area. Detention is not permitted in the buffer. The structures of the detention pond do not conflict with the buffer area, as discussed in the facilitation meeting. 6. Buffer plantings should continue the entire length of the property line (north). The buffer plantings are already shown extended to the property line. Further area belongs to TXDOT. 3 HOUSTON 1111 North loop West Suite 000 Houston, T~xas 77008 7l3Jl69.1103 v n3.8695573 F rJALLAS 15851 Dollas Parkway Suite 1060 Adfaon1 Tews 75001 972.490.7292 v 972490.7444 F <:HICJ\GO 308 West State Street Suite 125 Rockford, Illinois 61101 847.472.9780 v 815.966.2430 F Navarro West Center -Plan Comment Reply May4, 2008 7. Non-canopy tree size should be provided in caliper inches of a single cane (measured at 12' above grade.) As per the Landscape Architect, the standard of measurement for multi-trunk trees is: the caliper of the largest trunk, then % the caliper of all remaining trunks. Let's not let syntax get in the way of a compliant and quality landscape design. We are willing to define the calipers any way you can better explain. 8. Please provide buffer wall detail. The buffer wall detail was included in the previous submittal, however we have moved it to the A1.01-Site Details sheet. 9. Please remove sign from plan. The temporary sign is labeled to be remioved, note 17. The monument sign is only shown for approximate location of an underground conduit. There is no signage of any kind submitted for approval for this project. All signage will be permitted separately. 10. Provide a general note that 100% coverage of the groundcover, decorative paving, decorative rock (not loose), or a perennial grass is required in parking lot islands, swales and drainage areas, the parking lot setback, rights-of-way, and adjacent property disturbed during construction. The general note has been added to the landscape drawing and site plan. Reviewed by: Jennifer Prochazka Date: April 7, 2008 MISCELLANEOUS: 1. Irrigation system must be protected by either a Pressure Vacuum Breaker, a Reduced Pressure Principle Back Flow Device, or a Double-Check Back Flow Device, and installed as per City Ordinance 2394. The irrigation backflow preventer was indicated on the civil utility plan, but is now also shown on the site and landscape plans. 2. All Back Flow devices must be installed and tested upon installation as per City Ordinance 2394. The backflow note has been added to the site and landscape plan. ENGINEERING COMMENTS: 1. Please provide written response to all comments. (.;\ Replies below, thank you. V I am confused by your submittal. You seem to be basing your design with the widening of Wellborn Road being complete. I do not have start time for TxDot's project. As proposed, you will need to wait until the widening project is complete, or design this project with TxDOT's widening? Also, we need a total of four copies of plans for permit. Please submit an additional, or four revised to show culvert. -Y)O Tx \j)\ \-€. \+.e< We have coordinated the project so that our concrete drive will connect to l\.-\t~c\t\ed the future TXDOT roadway location. This drive simply will not be available ,.1 · 'J for use while TXDOT is completing with their work. In case TXDOT is not U\'f0-.0t\ .\uv() u<1"l ·ready for the roadway as per the concurrent schedule (see attached TXDOT \J, dct"sfl'.\-fV\fet5\{b letter), then we have a contingency design for a temporary, 19'-4' wide gravel drive, and relocated culvert to exactly match the one to be simultaneously ~0 removed, only 20 feet away. . cj']DtA.\G,v\ '+ 3. Access driveway to Wellborn shall be right-in, right -out only, due to a future raised median c)i1~Vv>00J-\ 'OR-'I at this location. \ {\Q\ ~1-e..Q ()...";, qAC~ ·Wellborn access is what it is. We understand there is no esplanade cut. . ~ Are you not proposing a culvert under the proposed driveway off Wellborn? As shown you ~.ee.Ji -\"D 0;'"'~ will be blocking drainage in the roadside drainage ditch . . ,o.ef! .1 ./ '1'", v.,u d.e.~i\~ The driveway coordination and contingency plan are shown and defined "'I'-'''(· \YI ' (N\IV" 1 above. ~ Provide sizing calculations for the culvert for your proposed driveway. 4 HOUSTON lJll Horth Loop West Suite 000 Houston, Texas 77008 713.869. ll!ll v 713.8695573 F OALLA~ 15851 Dallas Parkway Suite l 060 Adfaon, T exus 75001 972.490.7292 v 972.490.7444 F CHICAGO 308 We$I Stute Street Suite 125 Rockford, Illinois 61101 847.472.9780 v 815. 966.2430 F Navarro West Center -Plan Comment Reply May4, 2008 wv~\~~ . {Y\Cv\j '{'\.j\ ~d -\'u ff1'vicH~-~ Q.eJ\-0--; \s c;_;,()f1°'1 u_d..:::?(\le.; \~-r\Ol'.7 ./ toi<~ tJ-'~~ The temporary driveway and relocated culvert have no new calculations as C\ they will exactly match the existing one to be removed. · V Driveway permit needs to include stormwater discharge and culvert sizing calculation ND c.AIC-~ -'/ information which is not provided. Your Driveway Permit will be forwarded to TxDOT once .nnhJicl &l -Pur this information is provided and reviewed for completeness. 'cl ~d-'\OJ~-l. The TXDOT driveway permit has no culvert sizing needed as there is no new I N ecl cu.htel-f' -"/ culvert. We are including the storm discharge calculations. We are ..-. r-rt\'TION 1 (!_ ~\C1~ connecting into the TXDOT, 6' diameter pipe, and you kno ll (_'(_ t:::oc-uMt-N in• • @ Plea_se_ show ~II e~isting and proposed public water mains and sanitary sewer lines in close~;~e, irriqtlti <IVl v'\11'?~ prox1m1ty to this site. <:--'Sr?-!. -~.rfft>.r,y /ff'l,{_ \cl~\ ffO(J . \ 1V1l '(Y'Jfa\ef OkZ The existing and proposed mains are shown on our site plan. ~ s'riow 0 , ,5 ,~ 0-f lif1e.. :l.-~The 6-inch waterline extending from Steeplechase Subdivision Ph . 7 already serves one fire f\\~e_Ct ~...:::; hydrant. W_e are concerned that an additional fire hydrant may produce excess velocities. 1._,~ Please verify. The hydrant velocity is shown in the fire flow report. \Ao(L ()\{lflS V Please show existing and proposed contours on grading plan. ('v5,-~-._:::>7 The contours are shown on the grading plan. \ @ Please provide details on storm sewer tie-in in TXDOT ROW. Junction box will be required. \.\ () tt-\l(1 '7 ~ The storm sewer tie-in details are shown with a junction box, and are to be \'< -~~ '......-"'. coordinated with TXDOT by the General Contractor prior to construction. Q< D'1 1. What is TxDOT's schedule for the storm sewer installation and your contingency plan since I,.._ () it appears that your Site Will be developing before the Storm pipe gets there ~ l ,0 I J:J.l./...P r !xCOT ~(1(...)07 TXD sewer install ioo-that-we-a.re.JY.in into ti>.'-""-,.,,,!" U-''u -{Wtf ~ll . be oncurrent with our needs nd as per th TXDOT attached lett Our P"DViclgJ contingency p an, s ou e tie-in not be ava1 a , as designed and install a temporary water pump to move the equivalent of the orifice design over the detention edge and into the existing drainage ditch. The pump will have an underground conduit to provide uninterrupted power, and will be automatically operating when submerged, (an oversize sump pump). -Need inA>rtWL+i 1 a,JooW-~()'P-"-"' 1f\ t I I.A.cl 1'.t\ 5 ·•~xl1t'1~ f)-;n fV G clrc..."' pi \~CJ-Ro( \ ne=.--/ 2. Please ~how all easements on utility plan. It's difficult to tell if all the infr~struqture is i~ r-::-Ar FH (leech. +o be. C:v .{-lo-cf appropnate easements. -10x1? (TOP-r ~ "1 t.J1 v-il '!' e::,-?~ ~f The easements have been added to the CS.0-Utility Plan. f(V1~d ft· "Jex t 13. Provide detail of sump. Structures are not allowed in a PUE. The sump and associated scissor lift have been omitted from the scope of ework. A,,,.1 -\v .m~1d~ Fire flow report must verify that the proposed fire hydrants will meet minimum flow, velocity, ~~ .J \'i{J>Jt an~ pressure requirements as specified in the BCS Unified Design Guidelines. Please '{eN\~U revise. The fire flow report has been revised. 15. I am assuming there is a fire wall between Space A and Space B from the way the report provides the information. Please revise the report to indicate the construction of fire wall that allows for the independent fire flow requirements. The fire flow report has been revised to show two buildings separated by the fire wall. 16. Address discrepancy between wastewater flows provided in the report (125gpm) and the Site Plan (1.74 gpm). Typographical error, which has been corrected. . 17. It appears that your pavement and curbing blocks the drainage flow path of the adjacent property. Please explain in your drainage report any negative impact on the adjacent property and any necessary mitigation. As per our research, the adjacent property only flows past this property at the northwest corner, adjacent to our detention and onto the next site. We do not interpret the existing elevations to show drainage across this site. The existing contours indicate a ridge running approximately 10' away and 5 HOUSTON 111J Horth Loop West Suite 000 Houston. Tem 77008 7lUS9.mB V 713. 869 5573 F OALLAS 15851 Dallas Parkway Suite 1060 Addison, Texas 75001 972.490.7292 v 971490.7444 F 308 We.st State Street Suite 125 Rockford, Illinois 61101 847.472.9780 v 815.966.2430 F Navarro West Center -Plan Comment Reply May 4, 2008 parallel to the property line preventing the adjacent property from draining Ll onto this site. l\\D dfCli~f'°>{. ~o ')Please provide drainage report. {fro .:_.71 The revised drainage report is attached. J..k 1110d 9. Please submit erosion control plan. . Not 0..110..trn .. .__,-, The erosion control plan was included in the complete set. Copy attached herewith. t'.i()f wtO...&llC 20 Please pr?vide Engineer's ~ost Estimate for public infrastr~c~ure . . ~ Q The engineers cost estimate for the hydrant public infrastructure IS attached. I\ 11\t o..ftttlnaJ ® Please submit "Letter Acknowledging City Standards." l\l\J i._;;;;7 The letter acknowledging city standards is attached. 1,0~ '22)\1nclude BCS Unified Details with Civil Construction Plans. Nbt t;\-\tO.CV~-..J"~The BCS unified details are included in the Civil Construction plans. Copy attached. · 23. Additional comments may result from review of required documents not submitted with initial application. Reviewed by: Erika Bridges/Carol Cotter Date: April 17, 2008 FIRE: 1. Fire hydrant will be located within sight of Fire Lane. (IFC 2006 508.5.4). The fire hydrant has been relocated to be directly in line of sight and access to the fire lane. 2. #37 in notes shall read 75,000 PSI instead of 3,500 PSI. (IFC 2006 503.2.3). The note # 37 has been revised. 3. Knox Box needed for location (IFC 2006 506.1) (see Steve Smith, 764-6273, for info). The Knox Box location has been coordinated and shown on the site plan. 4. Fire lane sign at both entrances (Chapter 6 City Ordinance) (see construction guide) The fire lane sign is identified at both entries. Reviewed by: Steve Smith Date: April 1, 2008 ELECTRICAL COMMENTS REQUIRING IMMEDIATE ATTENTION: Per City of College Station Electrical Service Provider, each of these notes are standard comments and do not need a written reply. The electrical comments have been added to the plans as additional validation to the General Contractor and owner of the College Station Electrical service provider requirements. 1. Developer provides temporary blanket easement for construction purposes. 2. Developer provides easements for electric infrastructure as installed for electric lines (including street lights). GENERAL ELECTRICAL COMMENTS: Per City of College Station Electrical Service Provider, each of these notes are standard comments and do not need a written reply. The electrical comments have been added to the plans as additional validation to the General Contractor and owner of the College Station Electrical service provider requirements. 1. Developer installs conduit per City specs and design. 2. City will provide drawings for conduit installation. 3. Developer provides 30' of rigid or IMC conduit for riser poles. City installs riser. 4. Developer to intercept existing conduit at designated transformers and extend as required. 5. If conduit does not exist at the designated transformer, developer to furnish and install conduit as shown on electrical layout. 6 HOUSTON llll Horth Loop West Suite 000 Houston, Texas n oo8 713.869.mil v 713.8695573 F OAlLAS 15851 Dollos Parkway Suite 1060 Addison, foes 75001 972,490.7292 v 972.490.7H4 F <:HlCAGO 308 West Stole Street Suite 125 Rockford, Illinois 61101 847.472.9780 v 815.966.2430 F Navarro West Center -Plan Comment Reply May 4, 2008 6. Developer pours transformer pad(s) per City specs and design. 7. Developer installs pull boxes and secondary pedestals as per City specs and design (pull boxes and secondary pedestals provided by the City). 8. Developer provides digital AutoCAD 2000 or later version of plat and/or site plan. Email to bread@cstx.gov 9. Developer provides load date for project. 10. To discuss any of the above electrical comments please contact Brent Read at 979.764.5026. Reviewed by: Brent Read Date: April 1, 2008 Non Residential Architectural Standards Comments: 1. The overall square footage is over 20,000 s.f. (including outdoor sales area). A minimum of 25% of the facades facing rights-of-way (elevations A & B) must be brick, stone, etc. The elevations of A & B have been revised to show 25% brick/stone. 2. Please show how you are meeting the minimum design element requirement (Section 7.9.B.2) on elevations B, C & D. The inclusion of 2 design elements from the accepted list is shown at 45' maximum for elevations A & B, and at 60' maximum for elevations C & D. 3. No more than 66% of the roofline on elevation B can be at the same height (Section 7.9.B.2). Elvation B has been revised to show a maximum of 55% single roofline elevation. 4. The maximum amount of stucco (or stucco-like product) on a single fayade is 75%. Elevation C is not meeting this requirement (Section 7.9.B.3.b.1 ). The stucco like product is shown to be less than 75% on all elevations. 5. Painted concrete is not a permitted material. There is no painted concrete in the project. All exposed concrete tilt panel surfaces are covered in the acrylica textured coating (stucco like product, or the finish coat of eifs systems). 6. The green chosen for the awnings is not a permitted color on the City's color palette. If this is to be used as an accent color, please show that it is under 15% of the fa9ade to which it is applied . The green metal awnings have been changed to identify correctly as accent color, less than 15% of the fa~ade to which it is applied. Reviewed by: Jennifer Prochazka Thank you, Michael A. Kravetz Project Administrator HEIGHTS VENTURE ARCHITECTS, LLP 1111 North Loop West, Suite 800 Houston, Texas 77008 p 713.869.1103 F 713.869.5573 HOUSTON DALLAS CHICAGO Date: April 9, 2008 7 HOUSTON llll North Loop West Suite 000 Houston, Texas 77008 713.a&i. lHil v 713.8695573 F OA!.UIS 15851 Dallas Parkway Suite 1000 Addison, T exos 75001 972.490.7292 v 972490.7444 F CHICAGO 308 Weit State Street Suite 125 Rockiord, Illinois 61101 847.472.9780 v 8.15.966.2430 F