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Sewer Report Sewer System Report for The Barracks II Subdivision Phase 107 College Station, Texas October 2014 Prepared By: Schultz Engineering, LLC TBPE Firm No. 12327 P.O. Box 11995 College Station, TX 77842 2730 Longmire Drive, Suite A College Station, Texas 77845 (979) 764-3900 OF * * * JOSEPH A. ULTZ *r*?*M*M4M*Iir11MMMMNMMM*Mr •0, ,�: 10 r ( 4 4 4.,...4.s.:; ' *4". 7,--/.5°-,/./. F-12327 SCHULTZ ENGINEERING. LLC. GENERAL INFORMATION The Barracks II Subdivision is a 108-acre development in the area generally bounded by Wellborn Road on the east, Holleman Drive South on the west, Cain Road to the north and Rock Prairie Road to the south. It is zoned PDD and is comprised of a mixture of residential and commercial land uses. There are 425 residential lots planned for the site and 25.3 acres of commercial property. The area surrounding the site is generally undeveloped, with the exception of three residential developments adjoining the tract on the south. The majority of the area between Cain Road and Rock Prairie Road is described as General Suburban in the City's Comprehensive Plan, which implies that it is likely to develop in a similar manner as The Barracks II Subdivision Phases 100-108, 200 and 300 have been completed or are under construction. Phase 107 is unchanged from the Preliminary Plat and will add 63 new lots. Exhibit A shows the lot and sewer layout for Phase 107 Sewer service to the area is provided by 18" and 12" lines running along Old Wellborn Road and along the south property line of The Barracks Subdivision. These lines will be the primary outfall for this development,but they are also intended to serve other adjoining tracts in the same sewer basin. These adjoining areas are identified as: CSISD Tract—23.50 acres Mayo Tract—24.99 acres Turner Tract(partial)— 15.08 acres Barger Tract(partial)— 18.06 acres All four of these tracts are presently zoned R except for the Turner Tract which is now zoned Townhouse and General Suburban. None of these tracts affect this portion of the Sewer System. Design Criteria: Primary Sewer Outfall: Phase 107—Existing 12"sewer lines along Old Wellborn Road&Deacon Drive Domestic Demand: Avg. Pop Density: 2.67 people per lot Average Flow: 100 gpd/cap or 267 gpd per lot Peaking Factor: 4 Commercial Demand: Avg. Pop Density: 30 people per acre Average Flow: 50 gpd/cap or 1500 gpd per acre Peaking Factor: 4 Pipe: PVC D3034 SDR 26 Applicable Exhibits: Exhibit A—Sewer Exhibit Exhibit B—Sanitary Sewer Analysis Spreadsheet Conclusion: The sewer system shown in Exhibit A has been laid out using the criteria in the Bryan/College Station Design Guidelines and TCEQ. It is analyzed assuming peak flow conditions when this portion of the subdivision is fully developed. The spreadsheet in Exhibit B shows all lines depicted in Exhibit A to be capable of carrying the flows that come to them under these conditions. This analysis will be used as the basis for all subsequent sewer line designs in the subdivision. The system will function as intended as long as the line sizes and slopes are equal to or greater than those shown herein. It should be noted that any significant additional flow from off-site sources will likely exceed the capacity of several lines, so careful study is advised of any changes to the contributing area. EXHIBIT A OVERALL SEWER SYSTEM LAYOUT EXHIBIT B SANITARY SEWER ANALYSIS SPREADSHEET il f. a a a s 41 0 0 0 0 0 U c be-0 0 m7 y 8 MN00 ▪ 'R aua N 00 00 O O O G OWQ• i Q ..o. o .Y O 2 C ,?s a O e N N N W 000 Q O C G C C C C O ca a 7 e2 O .1 el 80 a e m N N b 00 q Co) 07 4 .41 C C C O O u W a"�C a 'a L 61 i 9 61 0 M M M Men G Vl N ,,•I0\ P. r r 0 O b0 en M M en en O O O O O O o O O O O O S m a a a a a 'W u o 0 en 0 0 en 0 0 O O O O A /-14 nom! _.. f^.I ^ - '. D 4) ul CV el 7 PCI A I""1 y O K2 n y00 W O O .rte a k v o 0 0 o c o •.r wl q 4 �' � u 88888 0 a+a a a v v vWC11 M w s. p GL t.V. = Q a N N r G� '' ¢ .- o+ 8 0 08 8 o V o o c o 0 Fea 7 O rn N m - N N a 66.u P N N O O C.. T,.„� O O O O O ';a "' a° AQ n & g0 ,, Q G — o r o N 7 N M CO .a 0.d On & O sapoM weamda q a H woaj mold 2uynquuo ja (..7 — - 4 S o 8 apoN o;apoN woa,j Mo13 a.o y 00 d' 00 v Isuo!lnitlsul o q ¢ o o o o 0 3 ca - e 0 a. a 4+ �s�aaawwop q u u o 0 0 0 0 to Cat. 4 a .a �V: a K. ... o q Allun3g NUN - a. Q ¢ o 0 0 0 0 e 0 U 1aynaptisalj '0 q 3 3 'i M - 0 N N p p G ik 8 r Or N Y C u o 0. a v o 0. w u 2 ,n vi .D .-. A • u Y a c0 0 000 a .0 L a p Q C 0E ee 00 00 7 i' 7, is O O O o W A A .!G '2 bY R y p y u CL VI VI =I y p c N N N 000 W 5 c w o 0 0 0 0 O0 a n. 3 O 0= • 'Q p VC o W o o 0DV U 0 6 0 0 0 0 G V v a w` w 4 L ms Y V M M M M M Q Q W Q M en en en en 'a 0.-00 .00. 1 . . . . . x -ar Tr 7 7 7 7 N en en en en M M M M M O 00000 CCI CU 4 60 Ai 04 v o w °�° m m 0 0 p. �y v o c o 0 o 0 •z t0 4 L Y e+ 0 0 0 0 0 ca W el a 7 x 7 7 Oy it - C II e N h N n1 ^ 7 a V 0 0 <,1 0 0 C. O O C C O xy .Qi E* T� C O VI 'b y 0 3 M V a 2 w , G _ N r ro w U 0 N N 0 O U T O O O O O Ti O A ivy VI T V O .1 ED V tUi N-. rn ^ .r i Q vt 0 O h T sapou weailsdn q v N 000" wolf Mou SupnquauoJ 0 g o g apo y v v v V M oa apo.woig Atoia c7 = 0 . L 6 leuognJpsuj o q o G 0 0 0 0 0 a. d d 3 c7 2 0 #. 0 Ca. tutu 0. ¢ ¢ 0 0 0 0 0 .7 C7 a DV/IIQ 6 oN A u O o 0 0 0 a guinea aismg a d d o C7 g. U �n!juap!sag .0 g o o N ^ o N cv p, •-. a .:1- M M 0 p 9t o 0 o r On a e4, k, 00 O- P x w a a Sewer System Report for The Barracks II Subdivision Phase 107 College Station, Texas October 2014 Prepared By: Schultz Engineering, LLC TBPE Firm No. 12327 P.O. Box 11995 College Station, TX 77842 2730 Longmire Drive, Suite A College Station, Texas 77845 (979) 764-3900 * * * • s owswa�arw♦s7.a 4 P, SC1UL1Z YNf-: *0***M:tilarilrl*Y3 .n 6. r. t b • t • 4 44441,41e4..1 .. 1 , ,i4,4110 4 4f41 vr 11,-1571. F-12327 SCHULTZ ENGINEERING. LLC. GENERAL INFORMATION The Barracks II Subdivision is a 108-acre development in the area generally bounded by Wellborn Road on the east, Holleman Drive South on the west, Cain Road to the north and Rock Prairie Road to the south. It is zoned PDD and is comprised of a mixture of residential and commercial land uses. There are 425 residential lots planned for the site and 25.3 acres of commercial property. The area surrounding the site is generally undeveloped, with the exception of three residential developments adjoining the tract on the south. The majority of the area between Cain Road and Rock Prairie Road is described as General Suburban in the City's Comprehensive Plan, which implies that it is likely to develop in a similar manner as The Barracks II Subdivision Phases 100-108, 200 and 300 have been completed or are under construction. Phase 107 is unchanged from the Preliminary Plat and will add 63 new lots. Exhibit A shows the lot and sewer layout for Phase 107 Sewer service to the area is provided by 18" and 12" lines running along Old Wellborn Road and along the south property line of The Barracks Subdivision. These lines will be the primary outfall for this development,but they are also intended to serve other adjoining tracts in the same sewer basin. These adjoining areas are identified as: CSISD Tract—23.50 acres Mayo Tract—24.99 acres Turner Tract(partial)— 15.08 acres Barger Tract(partial)— 18.06 acres All four of these tracts are presently zoned R except for the Turner Tract which is now zoned Townhouse and General Suburban. None of these tracts affect this portion of the Sewer System. Design Criteria: Primary Sewer Outfall: Phase 107—Existing 12"sewer lines along Old Wellborn Road&Deacon Drive Domestic Demand: Avg. Pop Density: 2.67 people per lot Average Flow: 100 gpd/cap or 267 gpd per lot Peaking Factor: 4 Commercial Demand: Avg. Pop Density: 30 people per acre Average Flow: 50 gpd/cap or 1500 gpd per acre Peaking Factor: 4 Pipe: PVC D3034 SDR 26 Applicable Exhibits: Exhibit A—Sewer Exhibit Exhibit B—Sanitary Sewer Analysis Spreadsheet Conclusion: The sewer system shown in Exhibit A has been laid out using the criteria in the Bryan/College Station Design Guidelines and TCEQ. It is analyzed assuming peak flow conditions when this portion of the subdivision is fully developed. The spreadsheet in Exhibit B shows all lines depicted in Exhibit A to be capable of carrying the flows that come to them under these conditions. This analysis will be used as the basis for all subsequent sewer line designs in the subdivision. The system will function as intended as long as the line sizes and slopes are equal to or greater than those shown herein. It should be noted that any significant additional flow from off-site sources will likely exceed the capacity of several lines, so careful study is advised of any changes to the contributing area. EXHIBIT A OVERALL SEWER SYSTEM LAYOUT EXHIBIT B SANITARY SEWER ANALYSIS SPREADSHEET Li a •Evgo4 ',"'o, ✓ v u n ° '6, vsU 0 00 0 0 Y p 4 grLo VI $ •i! e M N N O ' p T O O °;'' O W A � W o Y b0 y w u w a NNN0WQ y 0 e c ow 0000 0 w) O rt u i C• C w 111111 2o. Awa CY d C R Q C b0 C 0 g 17 L W con CC1 f 2 o iiiiii — = -,moi a W o A 00 � y C +° c04 W c c1% w - - - - - p„ CI C/) o c 3 u 3 o A5 L Y Q sapo�wai�sdri q IUO73 MO��Su1Jnq.z uoJ 0 apON p - OJ apo4 WOJJ Atoyu 0 O 0. o leuo„n#isui o a Q ¢i - - - - - y — c7 3 0 0 �e�alawwoD o� q d .7 V .° DV/RQ 4 00 g. ",) Csipueg ai2uls a Q - - - - - o c7 U irmuappau O N a - C7 F v c Y N0 , -