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alley/easement between Barbara & Conway. (infrastructure Categories C. Road Systems & Bridges <br />and F Utilities) <br />Benefits: Approximately 420 properties would benefit during local rainfall events up to 25 -year <br />frequencies with the new storm drain system. Mobility will beimproved due todecreased ponding <br />in the roadways, and this fairly small system provides relief to a majority of the project area without <br />having to remove and replace what iethere today. The project provides LK8| banefit, health and <br />safety benefit, helps long-term recovery' and enhances hazard mitigation. <br />National Obwective: Low Moderate Income <br />The Clarewood/Barbara Drive area is located inSan Marcos, TX on the east side of IH -35 at the <br />intersection ofHighway 8O/Hopkine Street and is generally bounded byHighway 8Uon the north, <br />|H-35onthe west, Clarewood onthe east, and Bugg Road onthe south. The area ieprimarily multi- <br />family residential and commercial with businesses located along |H-35. Clarewood, and Highway <br />80. The area is almost entirely |ooeb*d within the 100 -year flood plain with the exception of few <br />higher properties along |H-35. The area is significantly affected by the Blanco River overflows in <br />events 20 -year and above, as well as backwater from the Bugg Road and Highway 80 storm drain <br />systems when the Blanco River is high. The area falls within 1 census tract which is 87.8996 low - <br />to -moderate income. <br />ovvto-modenataincoma. <br />Existing Infrastructure: The B|onon Gardens north side storm sewer system drains Bugg Lone <br />and River Road with adual 48 -inch outfall tothe Blanco River. There is no existing system on <br />Clarewood Drive. <br />Draina-ge issues: An port of Blanco Gardens, this area is influenced by the Blanco River <br />overflows. During |ooe| rainfall events, the existing Bugg Lone storm drain system is undersized <br />and does not meet current the 2b-yeorCity design Criteria. The project area iofairly flat, Bugg Lane <br />topography drains towards |H-35 instead of the Blanco River outfe||, and drainage along Barbara <br />Dr. from Wendell tnBugg Lane innot well defined. Clarewood Drive has noexisting storm sewer <br />eyetem, and coupled with the Bugg Lane topography, the area experiences significant roadway <br />pondinginthe areas that cannot drain when the system ieinundated. <br />Proposed Infrastructure: Byadding anew storm drain system toClarewood Dr. with econnection <br />to both the Bugg Lane system and with a connection to the existing Highway 80 ditch (where poncled <br />water currently flows), the system will meet criteria, and runoff will be captured by the storm drains <br />and ditches instead of ponding in the roadway. Barbara Drive will be regraded to drain to Bugg <br />Lone for adequate drainage. The project will require coordination with TxD0T to outfall into the <br />Highway 80 ditch and some addition of storage volume as detention in this ditch may be required. <br />Benefits: Approximately 76 properties would benefit during local rainfall events up to 25 -years with <br />the new storm drain system. Mobility will beimproved due todecreased ponding inroadways, and <br />both Clarewood and Barbara Drives will have adequate drainage not available today. The project <br />provides LyNi benefit, health and safety benefit, helps long-term nacovery, and enhances hazard <br />mitigation. <br />National Ob"ective: Low Moderate Income <br />Currently for flood events greater than a20-yeorand larger, eportion ofthe river flood flow exits the <br />Blanco River channel and proceeds uncontrolled across the Blanco Gardens area to the wee, <br />eventually entering the Gan [Nomoe River upstream of the junction with the Blanco River. This <br />overflow creates the highest concentration of damages in the City. There are numerous areas in <br />the Blanco Riwarovarbank that allow this overflow tooccur, The uncontrolled overflow impacts 1 <br />census tract which ia87.0894|ovv-to'modenyieincome. <br />p.284ofthe electronic document <br />