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Sewer System Report Y Sewer System Report for Breezy Heights Addition Block 4, Lot 8R College Station, Texas March, 2011 Prepared By: SCHULTZ ENGINEERING, LLC. TBPE Firm Registration No. 12327 2730 Longmire, Suite A College Station, Texas 77845 979.764.3900 oittasl 'OF 4% JOSEPH P. SCHULTZ • 5; / gg • Z%"" 00‘, lBr F -12327 SCHULTZ ENGINEERING. LLC. (I -3N 3. /It 11 3aS General Information Location: The Breezy Heights Addition Block 4, Lots 5R, 6R, 7R & 8R. General Note: These 4 proposed lots and the existing 15 residential lots will flow into the existing 6" public sewer line and then into a manhole located on Thompson Street. The existing line was analyzed for the entire block. Land Use: Single Family Residential Design Criteria Primary Sewer Outfall: An existing manhole on Thompson Street. Domestic Demand: Avg. Pop Density: 2.67 persons per unit Average Flow: 100 gpd /cap Residential Peaking Factor: 4 Pipe: PVC ASTM D 3034 SDR 26 and Ductile Iron Applicable Exhibits: Exhibit A — Sanitary Sewer Analysis Spreadsheet Conclusion The " ro osed 6" line is an extension of an existing 6" sewer line. The P P .f g analysis in Exhibit A checks the calculated slope required to pass the estimated flow against the design slope shown on the plans. The spreadsheet indicates the design slope is greater than the minimum computed slope, so we conclude that the system is more than capable of carrying the anticipated flows from this subdivision. ExhibitAB also shows the full flow velocity in the proposed line at 2.63 fps and the calculated peak flow velocity at 1.29 fps. EXHIBIT A SANITARY SEWER ANALYSIS SPREADSHEET > , C 1 • . • eV LT. I .-- 0.1 CL, w.., ,.• d 1 co to 4 0 ue g., E 7- I to ci 1 c., ■ ci I a. & 1 I o ,.... „..„, '5 .-'• 0 e - go E -'' o 1 . - - 7 . ,og 6 1 8 ,. ....1 . 6 ±4 ..5.s. 8 1 .11 2 0 2 e 8 ir. 1 i 2 E 47 111 1 Fr■ . .7 E . c... 2 ....; 0 , 1,1 vs. 1 9 8 ! 1 v co cl . I o . C co I 0 7) to .E '8 ..r.. >-. 8 I 1 u. I I .... S :I 4 ot = es 2 I v e tii o cn N I i. c e s CZ b 8 at cn 6 o (-- 2 o .... oo o S I 6. r..3 .., -, 1 0 1 1." sopoN un,Isdn wall moil Supnqpluop 1 ' I ! t- 0 P 0 N 0 1 o 0 .. I . apoN luau mold 0 I ------------------------ t:. (saseqd Su9spco) SO I r ! wap ! so li ,-.. e .., — , 1 0 S201 lepap!Sall (7 1 .t 1 2 1 1 2