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HomeMy WebLinkAbout20210519092416552_Page_01WINN PROFESSIONAL ENGINEERS AND CONSTRUCTORS, LLC July 23, 2013 Mr. Alan Gibbs, P.E, City Engineer Planning and Development Services City of College Station 1101 Texas Avenue College Station, Texas 77842 RE: Wellborn Special Utility District Arrington Road Elevated Tank Site Drainage Exemption Request Dear Alan: We respectfully request an exemption to the Unified Stormwater Design Guidelines requirements for detention storage or mitigation of stormwater flows generated as a result of the subject project. We note the following factors that we believe justify the exemption: • This project is required for construction of critical public infrastructure by a public utility. • The site is owned by Wellborn SUD, and an existing ground storage tank and high service pump station are located on the site. • Only 0.65 acres of the existing 1.5 site will be disturbed for construction of the tank. Approximately 1/3 of the site will remain in a natural, undisturbed state unless construction of detention is required. • Preliminary rational method drainage calculations and associated exhibits are attached, The total off site and onsite drainage area is 2.40 acres. The calculated flow resulting from the 100 year storm under existing conditions is 5.54 cfs. The calculated flow after clearing, adding the elevated tank, and the required access drive is 5.98 cfs. Thus, a calculated additional 0.43 cfs will be generated by as a result of the project. This additional flow is minimal compared to the flow already contributed to the Alum Creek watershed in that area from other properties and public rights -of -way. We request that this exemption be granted on the basis of Section II.D.1 Threshold for Engineered Design of the Unified Stormwater Design Guidelines, "development of a proposed project will have no appreciable downstream effect." 505 Padon • P. O. Box 2727 • Longview, Texas 75606 c, 903-553-0500 • f. 903-553-0555 - «�vwwinnpec.com Mr. Alan Gibbs, P.E. July 23, 2013 Page 2 Thank you for your consideration of this request. Please do not hesitate to advise if you have any questions. Sincerely yours, Winn Professional Engineers and Constructors, LLC Texas Registered Firm No. F-7846 1� WpgBp nTAII N e>� �vnI.rEr r. v��ir��, 1i3. Walter T. in , Jr., P.E. 412/9 Principal , X WTW/pkw j Attachments PC: Stephen Cast — Wellborn Special Utility District (w/attach.) P:\PROJECTS\01-WE\Corr\Detailed Design Phase\Arrington Road ET Site\Drainage Exemption Request 072313.doc WELLBORN SPECIAL UTILITY DISTRICT ARRINGTON ROAD ELEVATED TANK STORM WATER RUNOFF EXISTING SITE Tt =(0.007*(n*L)A0.8)/(P2A0.5*SAO.4) Tch =(L*n)/(3600*1.49*RA(2/3)*SA(1/2)) Area 2.25 ac Tt Tch Tt 22.4 min L 250 ft L 640 ft Tch 2.6 min S 0.024 ft/ft Tap 20 ft Tc 25.0 min n 0.4 Bottom loft P2 11 in Depth 2 ft Hor. Slope 2.5 Weighted Runoff Coefficient R 1.44 ft # ID Area (sf) Area (ac) C C weight S 0.009375 ft/ft 1 GST 1,257 0.03 0.94 0.01 n 0.045 2 Pump Bldg. 400 0.01 0.94 0.00 3 Gravel Road 3,163 0.07 0.85 0.03 Q = CiA 4 Ex. Tank Site 8,843 0.20 0.32 0.03 C 0.33 5 Prop. Site 5,400 0.12 0.32 0.02 i 7.5 in/hr 6 Undist. Area 21,000 0.48 0.3 0.06 A 2.25 ac 7 Off -Site Area 64,275 1.48 0.3 0.18 Q 5.54 cfs TOTAL 2.40 0.33 PROPOSED SITE Tt =(0.007*(n*L)A0.8)/(P2A0.5*sA0.4) Tch =(L*n)/(3600*1.49*RA(2/3)*SA(1/2)) Area 2.25 ac Tt Tch Tt 22.4 min L 250 ft L 640 ft Tch 2.6 min S 0.024 ft/ft Top 20 ft To 25.0 min n 0.4 Bottom 10 ft P2 11 in Depth 2 ft Hor. Slope 2.5 Weighted Runoff Coefficient R 1.44 ft # ID Area (sf) Area (ac) C C weight S 0.009375 ft/ft 1 GST 1,257 0.03 0.94 0.01 n 0.045 2 Pump Bldg. 400 0.01 0.94 0.00 3 EST 1.963 0.05 0.94 0.02 Q = CiA 4 Ex. Tank Site 8,843 0.20 0.32 0.03 C 0.36 5 Conc. Road 4,800 0.11 0.94 0.04 i 7.5 in/hr 6 Prop. Site 10,337 0.24 0.32 0.03 A 2.25 ac 7 Undist. Area 12,600 0.29 0.3 0.04 Q 5.98 cfs 8 Off -Site Area 64,275 1.48 0.3 0.18 TOTAL 2.40 0.36 TOTAL EXISTING RUNOFF 5.54 cfs TOTAL PROPOSED RUNOFF 5.98 cfs NET CHANGE IN RUNOFF 0.43 cfs i?�> - 14�f3 Erika Bridges From: Danny Bradley [DBradley@winnpec.com] Sent: Wednesday, July 17, 2013 4:04 PM To: Erika Bridges Subject: RE: Arrington Rd. Elevated Storage Tank Attachments: Hydro Analysis to City 071713.pdf Erika, Thanks for being patient with us as we work through this process. We completed a hydraulic analysis of the subject property and surrounding watershed that contributes runoff to the property. Based on our calculations, the watershed area and rainfall intensity are unchanged, while only a small portion of the total area has an increased runoff coefficient due to the proposed land clearing, elevated tank, and driveway. This causes an increase in runoff due to our development of less than 0.5 cfs for a 100-year storm in Brazos Co. Because the increase is negligible, we believe that an abbreviated drainage report (Section III.C.2) would be an acceptable alternative to the complete report. Might this be an option as we proceed with putting together the site plan application? Let me know if you have any questions about the attached documents. Thanks for your help, Danny Bradley, E.I.T. Winn Professional Engineers & Constructors, LLC 903-553-0500 Office 903-424-3434 Cell From: Erika Bridges [mailto:ebridges@cstx.gov] Sent: Thursday, July 11, 2013 5:35 PM To: Danny Bradley Subject: RE: Arrington Rd. Elevated Storage Tank Danny, There was already a pre -application conference for this project, so that uses suffices for the stormwater planning. These guidelines are meant to help you write the report, but many items won't be applicable to this project. For most projects, they will just give us an executive summary, any associated exhibits, and a completed copy of Appendix D. I think that is probably the shortest, quickest way to write the report. Thanks, Erika From: Danny Bradley [mailto:DBradley@winnpec.com] Sent: Thursday, July 11, 2013 5:18 PM To: Erika Bridges Subject: RE: Arrington Rd. Elevated Storage Tank Hi Erika, I'm not at all familiar with the process of putting together the drainage report, but from section 3 of the guidelines it appears that a stormwater planning conference is usually the first step. Would that apply in this case? Should I just strictly follow the guidelines in developing the report? In other words, how flexible is this process? Danny Bradley, E.I.T. Winn Professional Engineers & Constructors, LLC 903-553-0500 Office 903-424-3434 Cell From: Erika Bridges [mailto:ebridges@cstx.govI Sent: Tuesday, July 09, 2013 12:39 PM To: Danny Bradley Subject: RE: Arrington Rd. Elevated Storage Tank Danny, No, you do not need to submit a preliminary plan application. This development meets the qualifications to submit a development plat only, which allows you to skip that step. Most projects have to have an approved preliminary plan and final plat before they can get site plan approval, but you just have to have the development plat approved. Thanks, Erika From: Danny Bradley [mailto:DBradleWbwinnpec.com] Sent: Monday, July 08, 2013 8:28 AM To: Erika Bridges Subject: RE: Arrington Rd. Elevated Storage Tank Erika, Under the planning applications there is also a preliminary plan application (http://cstx.gov/Modules/ShowDocument.aspx?documentid=4271). Must we submit this as well or should we just move on to the site plan application? Danny Bradley, E.I.T. Winn Professional Engineers & Constructors, LLC 903-553-0500 Office 903-424-3434 Cell From: Erika Bridges [mailto:ebridges@cstx.gov] Sent: Friday, July OS, 2013 5:15 PM To: Danny Bradley Subject: RE: Arrington Rd. Elevated Storage Tank Danny, Unfortunately, we must consider the size of the lot and not just the disturbance area. This is a question that we get quite frequently, and we consistently require detention in cases such as this. Since this area drains to the County just downstream, I'm sure the County Engineer would probably request detention, as well, for proper stormwater management. The only application we have received is a Development Plat Application, which only covers your plat review. The site plan has a completely separate application. (Here is a link to that application: http://cstx.gov/Modules/ShowDocurnent.aspx?documentid=6201.) As you can see, the site plan application is longer and has additional checklists. Hopefully that helps! Please let me know if you have any additional questions. Thanks, Erika From: Danny Bradley [mailto:DBradIgy(cbwinnpec.com] Sent: Friday, July 05, 2013 5:05 PM To: Erika Bridges Subject: RE: Arrington Rd. Elevated Storage Tank Thanks for getting back with me, Erika. I do have a couple questions. First, we understand that the platted lot is more than one acre, but this project will only be disturbing approximately 0.65 acres. Is there any way we can fall under the .,small lot" exemption? Also, can you explain the difference between the preliminary plan application and the site plan application? Perhaps we already did the preliminary application and I'm just unaware. Danny Bradley, E.I.T. Winn Professional Engineers & Constructors, LLC 903-553-0500 Office 903-424-3434 Cell From: Erika Bridges [mailto:ebridges(alcstx.gov] Sent: Friday, July 05, 2013 4:35 PM To: Danny Bradley Cc: Teresa Rogers; Danielle Singh Subject: Arrington Rd. Elevated Storage Tank Dan, Good afternoon! I will be the engineer reviewing your project, and I just wanted to follow upon your questions regarding detention. Per Section II.C.3.b. of the BCS Unified Design Guidelines, we will need a letter indicating which detention exemption criteria apply to this project. At initial glance it does not look like this site would be exempt from detention, as none of the qualifications seem to apply. Here is a link to the complete drainage guidelines for your reference: http://www.bcsunited.net/2012 Files/Design Manual/Drainage 2012.pdf Also, I'm not sure if you received the memo last week regarding the project's review status, so I wanted to mention it again. We are currently reviewing the plat and will try to have comments for you on Monday, however we will need a complete site plan application submittal before we will start reviewing the site, erosion control, and landscape plans that we received. Please let me know if you have any questions. Thanks, Erika Bridges, EIT, CFM Graduate Civil Engineer Planning & Development Services 1101 Texas Avenue, College Station, TX 77842 (979)764-3570 City of College Station Home of Texas A&M University City of College Station Home of Texas A&M University WELLBORN SPECIAL UTILITY DISTRICT ARRINGTON ROAD ELEVATED TANK STORM WATER RUNOFF EXISTING SITE Tt= (0.007*(n*L)Ao.8)/(P2A0.5*sAoA) Tch =(L*n)/(3600*1.49*RA(2/3)*SA(1/2)) Area 2.25 ac Tt Tch Tt 22.4 min L 250 It: L 640 it Tch 2.6 min S 0,024 Wit Top 20 ft Tc 25.0 min n 0.4 Bottom 10 it P2 11 in Depth 2 It Nor. Slope 2,5 Weighted Runoff Coefficient R 1.44 It # ID Area (so Area (ac) C C weight S 0.009375 Wit 1 GST 1,257 0.03 0.94 0.01 n 0.045 2 Pump Bldg, 400 0.01 0.94 0.00 3 Gravel Road 3,163 0.07 0.85 0,03 Q = CIA 4 Ex. Tank Site 8,843 0.20 0.32 0.03 C 0.33 5 Prop. Site 5,400 0,12 0.32 0:02 f 7.5 in/hr 6 Undist. Area 21,000 0.48 0.3 0.06 A 2.25 ac 7 Off -Site Area 64,275 I A8 0.3 0:18 Q 5.64 efs TOTAL 2.40 0.33 PROPOSED SITE Tt = (0.007*(n*L)A0.8)/(P2AQ5*sA0.4) Tch =(L*n)/(3600*1.49*RA(2/3)*SA(1/2)) Area 2.26 ac Tt Tch Tt 22.4 min L 250 It L 640 ft Tch 2.6 min S 0.024 ft/ft Top 20 ft Tc 25.0 min n 0A Bottom loft P2 11 in Depth 2 it Hor. Slope 2.5 Weighted Runoff Coefficient R 1.44 ft # ID Area (sf) Area (ac) C C weight S 0.009376 ft/ft 1 GST 1,257 0.03 0.94 0.01 n 0,045 2 Pump Bldg. 400 0.01 0.94 0.00 3 EST 1,963 0.05 0.94 0.02 Q = CiA 4 Ex. Tank Site 8,843 0.20 0.32 0.03 C 0.36 5 Conc. Road 4,800 0.11 0.94 0.04 i 7.5 m/hr 6 Prop. Site 10,337 0.24 0.32 0.03 A 2.25 ac 7 Undist. Area 12,600 0,29: 0.3 0,04 Q 698 cis 8 Off -Site Area 64,275 1.48 0.3 0.18 TOTAL 2.40' 0.36 TOTAL EXISTING RUNOFF' 554 cfs TOTAL PROPOSED RUNOFF 5,98 cfs NET CHANGE IN RUNOFF 0.43 cfs >4x. -_, �+ .+'`+L. 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T '1� `�j! � + s•i i S 4T �i i r � I yt(fiii A :� i •i s . - _...'Lr.T.i.4FdL.A'd! PREPARED BY: WINN PROFESSIONAL ENGINEERS AND CONSTRUCTORS, LLC WALTER T. WINN, JR„ P . DATE ACCEPTED BY: WELLBORN SPECIAL UTILITY DISTRICT STES 8'f ATE GENERAL MANAGER INDEX TO SHEETS SHEET DESCRIPTION 1 COVER SHEET 2 SITE PLAN 3 ALTERNATE TANK A 4 ALTERNATE TANK B 5 ALTERNATE TANK C WELLBORN SUD STORAGE TANK LOCATIOHJ W AP mm WINN PROFESSIONAL ENGINEERS AND CONSTRUCTORS, LLC 505 Pa&n P.O. Box 2727 Longview, Texas 756M T.903-553 05M F.903 553-0555 www.vAnnpec.cam Firm # F-7846 VICE PRESIDENT GARY SPENCE SECRETARY JAMES McCLESKEY TREASURER RONALD KAY MEMBERS GARY LIGHTSEY BEN WELCH GWENDOLYN HATTAWAY JOHN WINDER KEN GOODMAN TOM BRUMFIELD P:\PROXCTG\O1-M\DRAW\ANRINGT0N RO ELEVATED STORAGE TANK\01-M ARRINGTOR RD COVER.OWG ��Mmmmi -Mmm M�mm =�Mmim =�Mmm -Mwm" -Mmm, =�Mmmi L=0amimj 1 PP I C I I I I I + I I I c I + I SOUTH OAKS DR. JO 0 JO 60 EX. ACCESS RD. SCALE: 1'-30' EXI6NNG PUMP1 SUILOINC \ y y n PP -sy P PP / ~ EXISTING 0 AL I GROUND STORAGE T E TANK EXISTING SECURITY I FENCE c 20 - 2�R' � G _I.�. h0 _ POSED 600,000 ALROAE 266- TANK STE \ HEETS 3-6j J/J 2 + IUD: 1 U'rI> +\ \\ [ 9 �2� I IP \+ I d/ / � c < I I R I I I I I EWF, WELLBORN SLID soswmo °r111. ARRINGTON ROAD ELEVATED SITE PLAN sssam STORAGETANK AND GDNSIRonm, uc INJECT N l BNEf N.W4 quwtxo scu<: sNaT No. yCpIICLL N/A 2 xM¢oxrµ AS SHOWN PEGTINO SC.ILfs ,_, F EKE xANE: SITE PLAN V Of NGTON RO ELEVATED STORAGE TANK\SITE PLAN.OWG rm� -mmm =�mmm =�mmlm =�mmm - mm =�mmF�,B�m =�Do m, 12" DU. HOODED VER WITH SS BUG SCREEN BRACKET FOR AVIATION CLEARANCE UCHT" 24" DU. PAINTER'S VENT HATCH INLET INTERIOR S" SCH. /0 INTERNAL IN BRACE RODS 30' DM. ROOF NA"AY (NOTE "Al, r I �i-6" SCH. AO STEEL INTERNAL INLET PIPE SD'/ BOWL BOWL UDDER W/ SAFETY :LIMB SYSTEM 36" WIDE BALCONY WITH 42" HIGH HANDRAILS Q 6" TOE BOARD RISER PIPE LEG UDDER W/ RIGID RAIL SAFETY SYSTEM B" SCH. AU STEEL LOCATED 15' ABOVE GRACE. EXTERNAL OVERFLOW RISER UDDER PIPE COLUMN LOWER B' UDDER SHA LT I• BE REMOVABLE LE WITH HOOKS r TOP OF FOUNDATION FlN. G SEE NOTE 7 CONNECT OVERFLOW TO DRAIN AND 30"0 HINGED RISER "WAY ROUTE TO SPLASH OPEN OUTWARD BLOCK 500,000 GALLON ELLIPSOIDAL TANK N.T.S. E2/26/13 W.F.M. WELLBORN SLID ' SOsh� ELLIPSOIDAL TANK ARRINGTON ROAD ELEVATEDALTERNATE A N:A1 FNGINEFJi3 ry ;j,„ STORAGETANK AND m .:CommuCFORB, LLG PROJECT WY4 SHEET NAY4• NOTE. 1. ALL JOINTS SUBJECT TO STORED WATER OR WATER VAPOR CONTACT SHALL BE SEAL WELDED, INCLUDED SHALL BE INTERNAL UDDERS, ROOFS, MANWAYS, AND OTHER PENETRATIONS THIS EXCEEDS THE REOUIREMEN OF AWWA D100.) 2. TANK MANWAYS/MANOOORS SHALL BE LOCKABLE AND PROVIDED WITH EXTERNAL STOPS AND INTERNAL HANDLES. 3. ALL PENETRATIONS SHALL BE PROVIDED WITH TEMPORARY COVERS FOR USE PRIOR TO INSTALLATION OF PERMANENT FIXTURES. A. ALL STEEL PIPING SHALL BE SCH. AO UNUNED. S. ALL PIPE FITTINGS SHALL BE FLANGED UNLESS NOTED OTHERWISE. S. TANK AND ALL EXPOSED PIPING SHALL BE PAINTED IN ACCORDANCE WITH THE SPECIFICATIONS. 7. DETAILED DESIGN OF TANK AND FOUNDATIONS EXCEPT AS SHOWN SHALL BE PERFORMED BY CONTRACTOR FOR APPROVAL BY ENGINEER. S. UNDER GROUND PIPING TO BE INSTALLED WITH 12 CAUGE SOLD TRACER WIRE. MMMND SGIE: SMFET ND. vLmsAL N/A 3 H]PI20Niµ AS SHOWN E� PIOIDND SOME: ,:, F rtt NAVE: EWPSOIDAL � �VVJ RD ELEVATED STORAGE TANK\ELLIPSOIDAL TANK.DWG rm-m NNW -mmm =�mmm =�mmm =�mmm -mmm =�mmm =�mm 11IIMIlj ORA ADDER BOWL TUBE LADDER ......,.,....LINEATION 500,000 GALLON PEDESTAL SPHERE TANK N.T.S. NOTES: USIGN: TANK AND SUPPORT STRUCTURE SHALL BE DESIGNED, FABRICATED AND ERECTED IN ACCORDANCE WITH AMA DIOO AND THE PROJECT SPECIFICATIONS. WIND LOAD: 15 LB/R2 SNOW LOAD: 25 LB/FT2 SEISMIC ZONE: N/A TANK ERECTOR SHALL GROW UNDER BASE PLATE RING MATERIALS• STEEL PLATE: ASTM A283 GILD / A36 STRUCTURE STEEL SHAPES: ASTM A36 LADDER RUNGS: ASTM A706 M&- ACCESSORIES SHOWN ON ELEVATION DRAWING ARE ROTATED FOR CLARITY. ALL HANDRAILS, PLATFORM LANDINGS, WALKWAYS, LADDERS, AND SAFETY CLIMB DEVICES SHALL CONFORM WITH CURRENT OSHA STANDARDS. SEE PROJECT SPECIFICATIONS FOR SHOP AND FIELD PAINT REOUIRMENTS STERIUZE TANK IN ACCORDANCE WITH AWWA C652 AND PROJECT SPECIFICATIONS. ALL WELDS INSIDE TANK FOR TOP PLATES, (ADDER RUNGS, ETC. SHALL BE SEAL WELDED FOR CORROSION CONTROL THIS EXCEEDS THE REOUIRMENTS OF AWWA 0100. pRIWN rr: W.F.M. WELLBORN SUD ' OESg0ER "` PEDESTAL SPHERE TANK T.B.o.B. ARRINGTON ROAD ELEVATED ALTERNATE B r.w�ss: °sss / WWNPROFE66KKULENGINEER9 i"m'" "Z 2 26/13 STORAGE TANK ANDW"' CONSTRUCTORS= 01 WE PRDFECT IMYE: SHEET NAME: Jf OF NiF 4T. I�ILH�.o : C/ETM`�' l I ... 13 1 P:\PROJECTS\01-WE\DKAW\ARRINGTON RD I Duwlxo 6C.1LE: ENEEr xo. RwTwaL N/A 4 N6ERgElAt AS SHOWN PLONNO EEIIL: l:l F FXE NAVE: PEDESTAL � V LEVATED STORAGE TANK\PEDESTAL SPHERE TANK.CWC wm-mmmmlf L©�I�Iill%I AVIATION CLEARANCE LIGHT OVERFLOW ELEV. 426' WEIR BOX/OVERFLOW M SIZE IB"A20N12" OEEI ACCESS STEEL TANK SHELL LW.L ELEV. 388.5' 3" DRAIN LINE WITH MANUAL VALVE OPERABLE FROM WALKWAY TANK FLOOR MANHOLE TANK ACCESS UDDER W/ OSHA SAFETY CLIMBING DEVICE 8"0 SCH. 40 STEEL OVERFLOW PIPE WITH EXPANSION JOINT SUITABLE GALVANIZED STEEL BRACKETS, GUIDES AND HANGERS SHALL BE PROVIDED ON THE SUPPORT WALL AT INTERVALS NOT EXCEEDING 10 FT. 10'X10' OVERHEAD HANDRAIL ACCESS TUBE "WAY 1"0 TANK ACCESS MANWAY STEEL TANK ROOF PAINTERS RAIL EBB TUBE LADDER OSHA SAFETY 50'I TANK BING DEVICE 10"/ SCH. 40 STEEL FILL PIPE WITH EXPANSION JOINT STEEL LINED CONCRETE BOTTOM REMOVABLE SILT STOP PAINTERS RING PAINTERS LOUVER W/ INSECT SCREEN WALKWAY W/ HANDRAIL 12"A SCH. 40 STEEL DISCHARGE PIPE WITH EXPANSION JOINT SUITABLE GALVANIZED STEEL BRACKETS AND HANGERS SHALL BE PROVIDED ON THE SUPPORT WALL AND TANK FLOOR AT MINIMUM 10 FOOT INTERVALS REST PLATFORM (TYP.) UDDER W/ OSHA SAFETY CLIMBING DEVICE 30'0 PEDESTAL EXTERIOR FINISH AND COLOR AS SELECTED BY OWNER ,1" NPT THREADED COUPUNO O O o [] O [] TOP OF FOUNDATION ELEV. 206.5' GROUND ELEV. 286'+. CARTON FORM (TYP. ALL - CONCRETE WINCWMI HORZ. POURS) ` REQUIRED DRILLED PIER FOUNDATION 500,000 GALLON COMPOSITE TANK N.T.S. NOTES: I. THE TANK AND CONCRETE SUPPORT PEDESTAL SHALL BE DESIGNED AND CONSTRUCTED IN ACCORDANCE WITH AWWA DI00-96, A.C.I. 318-95. A.C.I. 301-96 AND PROJECT SPECIFICATIONS. 2. THE EXTERIOR OF THE CONCRETE PEDESTAL SHALL INCORPORATE VERTICAL AND HORIZONTAL RUSTICATION TO CREATE AN ARCHITECTURAL PATTERN. 3. TANK ACCESSORIES SHOWN ON ELEVATION DRAWINGS ARE ROTATED FOR CLARITY, 4. ALL HANDRAILS, PLATFORMS, LANDINGS, WALKWAYS. UDDERS, AND SAFETY CLIMB DEVICES SHALL CONFORM TO CURRENT OSHA STANDARDS. S. ALL UDDERS, LANDINGS, AND ASSOCIATED COMPONENTS INSTALLED INSIDE THE CONCRETE PEDESTAL SHALL BE HOT -DIPPED GALVANIZED. S. THE CONCRETE PEDESTAL EXTERIOR SURFACES SHALL RECEIVE A MIGHT BRUSH BUSTING. THE INTERIOR SURFACES SHALL HAVE A SMOOTH AS -CAST FINISH. 7. STERILIZE TANK IN ACCORDANCE WITH AWWA C652-92 AND PROJECT SPECIFICATIONS. S. REST PLATFORMS SHALL BE INSTALLED AT EVEN INCREMENTS BETWEEN THE FLOOR AND THE TOP PLATFORM, MAXIMUM 30' SPACING PER OSHA STANDARDS. B. ALL JOINTS SUBJECT TO STORED WATER OR WATER VAPOR CONTACT SHALL BE SUL WELDED. INCLUDED SHALL BE INTERNAL UDDERS, ROOFS, MANWAYS, OTHER PENETRATIONS, ETC. 10. TANK MANWAYS/MANDOORS SHALL BE LOCKABLE AND PROVIDED WITH EXTERNAL STOPS AND INTERNAL HANDLES. HATCHES AND LOCKS SHALL BE KEYED TO MATCH AND DOOR SHALL HAVE DUD BOLT LOCKS. 11. ALL PENETRATIONS SHALL BE PROVIDED WITH TEMPORARY COVERS FOR USE PRIOR TO INSTALLATION OF PERMANENT FIXTURES. 12. CONDUIT MAY BE ATTACHED TO UDDER MOUNTING BRACKETS ONLY WHERE CLIMBING SAFETY DEVICES WILL NOT BE HAMPERED; OTHERWISE, UNISTRUT OR CONDUIT MAY BE CLAMPED TO BRACKETS THAT ARE EMBEDDED IN CONCRETE OR WELDED ON STEEL PRIOR TO TANK PAINTING. Duwx Er: KHU WELLBORN SLIDvo°m.nn DESWVRD OYv B.D.B. ARRINGTON ROAD ELEVATED COMPOSITE TANK , Polsn mw ATEST RECISION, 3/1/13 ALTERNATE WINN PROFE33NXW.ENGINEER9 -�� ,,,,,, AND wnFe Jog Iw.: STORAGE TANK CGNSTRDCFORSLLC Ol-WE PRWFti NAVE: SINFM IFWP oAWn10 suLF: VEM GL NIA x9RMONTAL AS SHOWN PLom1M scALF: ttt FILE RAN[: ARRINGTON RD ELEVATED STORAGE TA TANK.DWG f}' 'f CITY OF COUXGE STATION Horne ofTew AdM University' MEMORANDUM July 26, 2013 TO: Terry Winn, P.E.; via: twinn@winnpec.com FROM: Matt Robinson, AICP, Senior Planner SUBJECT: ARRINGTON TOWER (SP) Thank you for the submittal of your SITE PLAN - COMMERCIAL application. This prof 't will be distributed to staff next week for their review. ✓// PC: Wellborn Special Utility District of Brazos County; via: wsud.sc@verizon.net P&DS Project No. 13-00900153 Planning &Development Services P.O. BOX 9960 • 1101 TEXAS AVENUE • COLLEGE STATION • TEXAS .77842 TEL. 979.764.3570 • FAX. 979.764.39l cstx.govidevservices CITY OF COLLEGE STATION Home of Texas A6M University' MEMORANDUM TO: Terry Winn, P.E.; via: twinn@winnpec.cov FROM: Teresa Rogers, Staff Planner SUBJECT: ARRINGTON TOWER (SP) Staff reviewed the above -mentioned site plan as requested. The following page is a list of staff review comments detailing items that need to be addressed. Please address the comments and submit the following information by any Monday at 10:00 a.m. for further staff review: City of College Station Transmittal Letter; Memo providing written responses to all of staff's comments (identify the specific page that each comment was addressed on or the reason for not addressing the comment); Two (2) 24"x36" revised site plans; One (1) 24"x36" landscaping plan (may be combined with the site plan); Please note that this application will expire in 90 days from the date of this memo, if the applicant has not provided written response comments and revised documents to the Administrator that seek to address the staff review comments contained herein. If there are comments that you are not addressing with the revised site plan, please attach a letter explaining the details. If you have any questions or need additional information, please contact Teresa Rogers at 979.764.3570. PC: Wellborn Special Utility District of Brazos County; via: wsud.sc@verizon.nz P&DS Project No. 13-00900153 Attachments: Staff Review Comments Planning d Development Services 11.0. BOX 9960 • 1101 TEXAS AVENUE • COLLEGE STATION • "TEXAS - 77342 TE1. 979,764.3570 • FAX. 979.764.3496 cstrc.gov/devservices STAFF REVIEW COMMENTS NO. 1 Project: Arrington Road Elevated Tank (SP) 13-00900153 PLANNING 1. Add a vicinity map to the site plan for reference of the site's location. 2. Add the address/location/legal description in the title block. 3. Add the name, address, and telephone number for Wellborn SUD in the title block. 4. Depict and label the setbacks on the site plan. 5. Provide the height of the buildings onsite. 6. Provide a general note on the site plan that states the following: Exterior building and site lighting will meet the standards of Section 7.10 of the Unified Development Ordinance. The light source shall not project below an opaque housing and no fixture shall directly project light horizontally. Fixtures will be mounted in such a manner that the projected cone of light does not cross any property line. 7. Please note that any changes made to the plans, that have not been 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 be made of aware of will constitute a completely new review. Reviewed by: Teresa Rogers Date: August 6, 2013 LANDSCAPING/STREETSCAPING/BUFFER 1. Provide a landscape legend and streetscape legend which include the size, type, and points claimed for proposed and existing landscaping. Existing trees may be claimed for landscaping points; however, the location and diameter must be listed on the site plan and a barricade plan and detail must be provided on the site plan. For more information on these requirements please refer to the Unified Development Ordinance Section 12-7.6 Landscaping and Tree Protection. If you have any further questions regarding landscaping you may also call me at (979) 764-3570. 2. Provide a general note that 100% coverage of 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. Reviewed by: Teresa Rogers Date: August 6, 2013 ENGINEERING COMMENTS NO. 1 1. Please label all easements on the site plan. 2. Show the stabilized construction entrance on the erosion control plan. 3. Provide a grading plan with existing and proposed contours labeled. 4. Add the FEMA floodplain and "no utilities on site' notes from the plat to the site plan. 5. Please label the flowlines for the pipes under the driveway. Please also provide a detail for the driveway similar to the City's standard commercial driveway detail. Reviewed by: Erika Bridges Date: August 5, 2013 ELECTRICAL COMMENTS REQUIRING IMMEDIATE ATTENTION 1. This project location is outside of CSU certification area. CSU will not provide electric service to this project location. GENERAL ELECTRICAL COMMENTS 1. To discuss any of the above electrical comments please contact Gilbert Martinez at 979.764.6255. Reviewed by: Gilbert Martinez Date: August 2, 2013 FIRE 1. If a fire lane extends more than one hundred feet (100'), an approved turn -a -round or "T" will be required. 2. No more than a six percent (6%) grade is allowed on any length of fire lanes. 3. Fire lanes will be constructed using the "Fire Apparatus Turning Radius Template" and have a fire lane sign at the entrance. Curbs to be marked "Fire lane, No Parking, Tow Away Zone" with a minimum of four (4") letters. 4. A "Knox Box" security key system is required on all buildings and a Knox Switch is required on all gated entrances. Reviewed by: Eric Dotson SANITATION 1. Sanitation is ok with this project. Date: July 30, 2013 Reviewed by: Wally Urrutia Date: July 31, 2013 Teresa Rogers From: Teresa Rogers Sent: Tuesday, August 06, 2013 5:58 PM To: 'Terry Winn' Cc: 'wsud. sc@verizon. net' Subject: Arrington Tower Landscape Plan Terry, I apologize for the confusion, but the landscape plan was misplaced and provided to me after I sent out comments. Please disregard the landscaping comments that were just sent out. I have reviewed the landscaping plan and have the following additional items that should be addressed: • Per streetscape requirements, an additional 300 landscape points are required for every 50 linear feet of frontage on a right-of-way. Driveway openings, visibility triangles, and other traffic control areas may be subtracted from total frontage. I have estimated that this will mean an additional 750 points should be provided on the landscape plan. The rest of the landscape plan looks good. Please let me know if you have any questions. Sincerely, Teresa Teresa Rogers Staff Planner Planning & Development Services City of College Station P.O. Box 9960 1101 Texas Avenue College Station, TX 77842 I 1 1 WHITES, BLUES, GRAYS AND ACCENTS OO91111nemec9@ilo I SDI took While 378lloadmp 39BLDolhBlue TSBLFounlntnbleu 2601(Ieor Sky 610I Blue Ribbon 101(odot Blue 31GR Slam Cloy 32GR light Gory - ANSI He. 2O 33GRGmy•ANSI0o.61 34GR Deep Spo(e 35GR olmk 02SFlamon Yclloee 04SF Ton table Orange Solely Yellow Solely Orange OSSF Imenolional Oange 06% (ondy Apple Red o95F Speaaint Glean IISF Luc Blue I4SF Paplo Rain Safety Red Solely Glean Solely Blue Solely Pwplo NOTE: Colors represented are reproductions of actual standards and can vary In oppearon(e due to product, texture variations, gloss levels, application method and thickness of the applied film. 51BP.(loud 15BR Pole Color Card BROWNS, YELLOWS, GREENS AND REDS 44BR Beige ON Muni See 04BR Deem! Sunds 68RR Wou, 06BR 6mhm (nnyon 840R 97anlBalad Bait 858R.Medium amnia 86OR Polk emvo i _- i 22Y5'7 galleries IIYI'70nllodil 78GII(umulus 37GII Ids6 Spang 10611 Apo Sky i IIOGR(lovm 21611 roiwny 91GP Bulemn 07RO Two(ollo 28RO 7donleney rile NOTE: Colors represented are reproduclions of actual standards and can vary In appenrance due to product, texture variations, gloss levels, application molliod and thickness of IIle applied film. Tnemer Company Incorporated 6800 Corporate Drive Kansas CHY, Missouri 64120-1372 1-808•THEIdECI fax: 1.816-4833969 www.inamet.com P ll.d�•d d�hamlNa`i4un vusGelmeFroyrnM;vteotn [ rrtlr:u Kann ltatv.d�rxn6.,ofvrorert tn2ricd dr»an}I:ucmro'x ifnrCdYpkv�+n�snYn i+[el4anraluo.�ys eAxxp (oryyomt` E-� 1c..4r'rkN..r.mlpn}p�:�nn'u{b�tnc rain.-�, ioa ACa:S;.'rvxrntrv-�n[r�tt[;•':nryta f•m'n rnlnvd *pa•at;�rr_ o:•Inn!v (.xrygny. tat 700@ Ninitdrt USd ((S751p50! 1YOIA8