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Home My WebLink AboutOversize Participation Request·.· '•. lMB 11 11 July 2, 2007 McCLURE & BROWNE ENGINEERING/SURVEYING, INC. 1008 Woodcreek Drive, Suite 103 •College Station, Texas 77845 (979) 693-3838 •Fax: (979) 693-2554 •Email: McClureBrowne@Verizon.net Mr. Alan Gibbs, P.E. Senior Assistant City Engineer City of College Station Post Office Box 9960 College Station, Texas 77842 Re: Sonoma Subdivision, Phase 2 -Oversize Participation Request Dear Alan: On behalf of the owner, BCS Development Co., I wish to request Oversize Participation by the City of College Station for costs associated with the development of Sonoma Subdivision, Phase 2. The City's Master Utility Plan shows a 24" water line to be extended along the east side of William D. Fitch Parkway. This letter is to request oversize participation from the City for the cost difference between the 24" water line and an 8" water line which would normally be required for this development. Accompanying this letter are two exhibits. Exhibit A is a copy of the output file from a KYPIPES computer model of the Sonoma Subdivision. It is the same model as submitted with the Water Report for the subdivision except a segment of the water line along William D. Fitch Parkway is changed from a 24" to an 8" diameter (Pipe No 22). The model shows that the lowest pressure in the system with the 8" line is 78 psi under fire flow conditions. This exceeds the minimum pressure of 20 psi required by TCEQ. This proves that the system performs adequately with the 8" line. Exhibit B is a worksheet that computes the differential cost between the 24" and the 8" water line. That difference is $145,855.50. This number is value of the oversize participation the owner is requesting from the City. We recognize that the following items will be required as well: • Payment & Performance Bonds • Copy of Corporate Resolution • Copy of Current Deed • Copy of Title Policy If you need additional information, please contact me at your convenience. Sincerely, lr;{"~~.E. ~esident -Engineering xc: Mr. Randy French, BCS Development Co . attachments F:\1053 -Randy French\0005-Sonoma Development\Docs\Phase Two\OP Request\COCS -Gibbs01 -OP Request.doc 118 111 McCLURE & BROWNE ENGINEERING/SURVEYING, INC. 1008 Woodcreek Drive, Suite 103 •College Station, Texas 77845 (979) 693-3838 •Fax: (979) 693-2554 •Email: McClureBrowne@Verizon.net EXHIBIT A F:\1053-Randy French\0005-Sonoma Development\Docs\Phase Two\OP Requesl\COCS -Gibbs01 -OP Request.doc Fire Flows w/8" Water Line along William D. Fitch Parkway K Y P I P E 4 Univer~ity of Kentucky Network Modeling Software Copyrighted by KYPIPE LLC Veroion 3 -11/01/2005 Date & Time: Thu Jun 28 14:32:16 2007 INPUT DATA FILENAME --------------F: \ 1053-R-l \ 0005-S-l \Docs\PHJ\SET-1\OPREQU-1\8-in. DT2 TABULATED OUTPUT FILENAME --------F: \ 1053-R-l \ 0005-S-l \Docs\PHJ\SET-1\OPREQU-1\8-in.OT2 POSTPROCESSOR RESULTS FILENAME ---F: \ 1053-R-l \ 0005-S-l \Docs\PHJ\SET-1\OPREQU-1\8-in. RS2 S U M M A R Y 0 F 0 R I G I N A L D A T A U N I T S S P E C I F I E D FLOWRJ\TE . • • • • • . • • • • . • gallons/minute HEAD (HGL) • • • . . • . . • . -feet PRESSURE . . • • . • • • • • • . • psig P I P E L I N E D A T A STATUS CODE: XX -CLOSED PIPE CV -CHECK VALVE NODE NAMES LENGTH DIAMETER ROUGHNESS MINOR P I P E N AM E #1 #2 (ft) (in) COEFF. LOSS COEFF . P-1 J-19 J-827. 77 18. 00 130.0000 1. 21 P-2 J-3 J-316. 70 8 . 00 140.0000 0.57 P-3 J-3 J-341. 31 8.00 140. 0000 0.17 P-4 J-4 J-6 310.21 8. 00 140.0000 0.17 P-5 J-5 J-17 320. 89 6 .00 14 0.0000 0 .17 P-6 J-5 J-8 426.00 6 . 00 140.0000 1. 44 P-7 J-6 J-13 305.52 8 .00 140.0000 0.17 P-8 J-7 J- 9 170.45 8 .00 140.0000 0. 00 P-9 J-7 J-8 518.43 6 . 00 140. 0000 14. 30 P-10 J-8 J-6 274. 88 6. 00 140. 0000 o. 57 P-11 J-9 J-5 197. 72 8 .00 140. 0000 0.00 P-12 J-9 J-10 175. 92 8. 00 140. 0000 0.00 P-13 J-11 J-7 384. 71 8. 00 140. 0000 0.17 P-14 J-11 J-12 324. 67 3. 00 140. 0000 0.17 P-15 J-13 J-11 544 . 82 8.00 140. 0000 1. 44 P-16 J-13 J-15 219.27 8.00 140.0000 1. 44 P-17 J-15 J-14 43. 33 8. 00 140.0000 0 .00 P-18 J-15 J-16 450.00 3.00 140.0000 0 .17 P-20 J-1 J-3 229. 45 8. 00 140.0000 0 .57 P-21 J-17 J-4 661. 82 6. 00 140.0000 1. 84 P-22 J-19 J-10 1197.09 8. 00 130. 0000 14 .00 P-23 VP-2 J-19 43. 4 7 18.00 130. 0000 0 .00 P U M P/L 0 S S E L E M E N T DAT A THERE IS A DEVICE AT NODE VP-2 DESCRIBED BY THE FOLLOWING DATA: (IO-1) HEAD FLOWRJ\TE EFFICIENCY (ft) (gpm) (I) 189. 23 0. 00 75.00 184. 62 1350. 00 75 .00 172. 57 2700.00 75 . 00 E N D N 0 D E DA TA NODE NODE EXTERNAL JUNCTION EXTERNAL NAME TITLE DEMAND ELEVATION GRADE (gpm) (ft) (ft) --------------------------------------------------------------J-1 o.oo 327.00 J-2 0. 00 328.00 J-3 0.00 309. 00 J-4 0.00 319. 00 J-5 0.00 326.00 J-6 0.00 315.00 J-7 0. 00 316.00 J-8 0.00 321.00 J-9 0.00 320. 00 J-10 o. 00 319.00 J-11 0.00 307. 00 J-12 0.00 303. 00 J-13 o. 00 312. 00 J-14 0. 00 309. 00 J-15 o. 00 309. 00 J-16 0.00 305. 00 J-17 1000. 00 333. 00 J-19 0.00 0.00 VP-2 340.00 34 0. 00 0 U T P U T 0 P T I 0 N D A T A OUTPUT SELECTION: ALL RESULTS ARE INCWDED IN THE TABULATED OUTPUT MAXIMUM AND MINIMUM PRESSURES 5 MAXIMUM AND MINIMUM VELOCITIES 5 MAXIMUM AND MINIMUM HEAD LOSS/1000 • 5 Y S T E M C 0 N F I G U R A T I 0 N Ca~e: NUMBER OF PIPES .••...•...•.•.••••• (p) 22 NUMBER OF END NODES ..•.•.••••..•.• ( j ) 18 NUMBER OF PRIMARY LOOPS •.••••••••. ( l) • 4 NUMBER OF SUPPLY NODES •..••.•••••• ( f) • NUMBER OF SUPPLY ZONES •..••..••..• (z) • RESULTS OBTAINED AFTER 6 TRIALS: ACCURACY • 0.00001 S I M U L A T I 0 N D E S C R I P T I 0 N (L A B E L) P I P E L I N E R E S U L T S STATUS CODE: P I P E N AM E P-1 P-2 P-3 P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 P-13 P-14 P-15 P-16 P-17 P-18 P-20 P-21 P-22 P-23 XX -CLOSED PIPE NODE NUMBERS #1 #2 J-19 J-1 J-3 J-2 J-3 J-4 J-4 J-6 J-5 J-17 J-8 J-5 J-6 J-13 J-7 J-9 J-7 J-8 J-6 J-8 J-9 J-5 J-10 J-9 J-11 J-7 J-11 J-12 J-13 J-11 J-13 J-15 J-15 J-14 J-15 J-16 J-1 J-3 J-4 J-17 J-19 J-10 VP-2 J-19 E N D N 0 D E R E S U L T S CV -CHECK VALVE FLOWRATE HEAD MINOR LOSS LOSS (gpm) (ft) (ft) 637. 62 0.13 0.01 0.00 0.00 0. 00 637. 62 2.36 0. 04 220. 49 0.30 0.01 582.87 7. 63 0.12 133.77 0.66 o. 05 104. 75 0.07 0. 00 86. 72 0.03 0 .00 18. 04 0.02 0.01 115. 74 0. 33 0.02 449 .10 0. 71 0.00 362. 38 0. 43 0 .00 104. 75 0. 09 0.00 0. 00 0.00 0.00 104 . 75 0.13 0 . 01 0.00 0.00 0 .00 0. 00 0.00 0.00 0. 00 o.oo 0 . 00 637. 62 1.59 0 .15 417 .13 8. 4 7 0 . 64 362. 38 3. 34 1.16 1000. 00 0.02 0.00 LINE HL+ML/ VELO. 1000 (ft/•) (ft/ft) 0.80 0.17 o.oo 0. 00 4. 07 7.05 1.41 0.99 6. 61 24.15 1.52 1. 68 0. 67 0.25 0.55 0.17 0. 20 0. 06 1. 31 1.25 2. 87 3. 62 2. 31 2. 43 0. 67 0. 25 0.00 o.oo 0.67 0.26 o.oo 0.00 0. 00 0. 00 0. 00 o.oo 4.07 7 .56 4.73 13. 77 2. 31 3. 76 1. 26 0. 35 NODE NAME NODE TITLE EXTERNAL HYDRAULIC NODE PRESSURE NODE J- J- J- DEMAND GRADE ELEVATION HEAD PRESSURE (gpm) (ft) (ft) (ft) (p•i) 0.00 0 .00 0.00 526.43 524. 69 524.69 327 . 00 328. 00 309. 00 199.43 196.69 215.69 86. 42 85.23 93. 4 7 HL/ 1000 (ft/ ft) 0.15 o. 00 6. 92 0. 97 23.79 1.56 0. 24 0.17 0. 04 1.19 3.62 2.43 0.24 o. 00 0.24 0 .00 0. 00 0.00 6. 92 12.80 2 . 79 0.35 J-4 0. 00 522. 29 J-5 0. 00 520. 93 J-6 0. 00 521. 98 J-7 0. 00 521. 67 J-8 0.00 521. 64 J-9 o. 00 521. 64 J-10 0. 00 522. 07 J-11 0 . 00 521. 76 J-12 0 .00 521. 76 J-13 0.00 521. 91 J -14 o. 00 521. 91 J-15 0. 00 521. 91 J-16 0.00 521. 91 J-17 1000. 00 513 .18 J-19 0.00 526.57 VP-2 526. 58 S U M M A R Y 0 F I N F L 0 W S AND 0 u (+) INFLOWS INTO THE SYSTEM FROM SUPPLY NODES ( -) OUTFLOWS FROM THE SYSTEM INTO SUPPLY NODES NODE NAME FLOWRATE (gpm) VP-2 NET SYSTEM INFLOW • NET SYSTEM OUTFLOW = NET SYSTEM DEMAND = 1000.00 1000. 00 0.00 1000. 00 NODE TITLE 319.00 203. 29 88. 09 326.00 194. 93 84. 47 315. 00 206. 98 89.69 316.00 205. 67 89.12 321. 00 200.64 86. 94 320.00 201. 64 87.38 319.00 203. 07 88. 00 307 . 00 214. 76 93 . 06 303 . 00 218.76 94. 80 312. 00 209.91 90.96 309 .00 212.91 92 . 26 309. 00 212. 91 92.26 305. 00 216.91 93.99 333. 00 180.18 78.08 +-LOW PRESSURE 34 0. 00 186. 58 80.85 T F L 0 W S .. HB 111 McCLURE & BROWNE ENGINEERING/SURVEYING, INC. 1008 Woodcreek Drive, Suite 103 •College Station, Texas 77845 (979) 693-3838 •Fax: (979) 693-2554 •Email: McClureBrowne@Verizon.net EXHIBIT B F:\1053 ·Randy French\0005 ·Sonoma Development\Oocs\Phase Two\OP Request\COCS. Glbbs01. OP Request.doc Fann 1058 (Rev. 9/2004) Page 2 of2 Access Driveway Regulations The Texas Transportation Commission, in recognition of its responsibility for the safety and utility of public highways under its jurisdiction, has directed the department to adopt access driveway standards to accomplish a coordinated development between highways and abutting property. For this purpose, the booklet entitled "Regulations for Access Driveways to State Highways", was published and adopted, setting out departmental policies to regulate construction and maintenance of access driveway facilities. Sketch of Installation IRON HORSE WAY SONOMA-PHASE 2 SEE ATTACHED PROVISIONS February 19. 2008 ----------------------------------------------------------------------------------------- Jay, We want to replace the rock rip-rap at the end of the culvert on Iron Horse Way in the Sonoma Subdivision with grass sod (see attached). The velocity for the 10 year storm is 4.2 fps. The 25 year velocity is 4.8 fps. Let me know if you need any additional information. Thanks, Jeff Jeffery L. Robertson, P.E. Vice-President Engineering McClure & Browne Engineering/Surveying, Inc. 1008 Woodcreek Drive, Ste. 103 College Station, Tx 77845 Ph: (979) 693-3838 Fx: (979) 693-2554 jeffr@mcclurebrowne.com I I I I / I I I / i I I ... ~ ; ' ! i I i ' i I ' / Revised 2-19-08 by Jeffery L Rock Rip-Rap to be replaced with Robertson Gross Sod I I I iJ I I ~ I · .. 1 <> I -"--.,,-~ I "' ,:j ···l . :~~II ', .. n 1 ., I "' I I I : ,·;!·;'1 · .. __ _.-............. ~-·=~~ -........ ''-. \ \ IRON HORSE WAY ~. 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