South IH-35 Annexation Area, Water and Wastewater Improvements - Austin, Texas
The service area for this project consists of approximately 1,000 acres of land. Three Phases of water & wastewater improvements involving the construction of approximately 2,250 L.F. of 8 water line, 3,800 L.F. of 12 water line, 29 fire hydrants, 3,360 L.F. of 8 wastewater line and 4,050 L.F. of 18 wastewater line. The project area is bounded by Slaughter Lane to the north, IH-35 on the east, FM1626 to the south and the existing City limits of San Leanna and Austin on the west. Unique design considerations for this project: The proposed wastewater line would need to connect to an existing wastewater tunnel (54-inch diameter) located on the other side of Slaughter Creek. Slaughter Creek at this location is classified as Major Waterway as defined in the Citys Land Development Code. Construction is prohibited within the Critical Water Quality Zone (equals to the 100- year storm floodplain limits). Therefore, the portion of the wastewater line crosses Slaughter Creek was constructed using the bore and jack method. In order to avoid future wastewater line crossing Slaughter Creek and the related environmental disturbance, the City instructed RC&A to size the wastewater line to accommodate future development. Due to the complexity of future development and topography of the project site, RC&A developed seven (7) options to serve the annexation area south of Slaughter Creek.
Eubank Acres Annexation Area, Water and Wastewater Improvements - Austin, Texas
The project area is located in north Austin and consists of approximately 146 single family homes and 5 commercial buildings. The subject site was annexed by the City of Austin in December, 2000. The proposed wastewater improvements consists of approximately 11,000 lineal feet of 8 diameter line, 4,600 lineal feet of 6 diameter line, 57 manholes and the associated appurtenances. The project site is characterized with steep terrain and substandard street widths. Many homes have finished floor elevations several feet below street level. Several design options and the associated estimated construction costs were developed to provide the City with sufficient cost-benefit data to select the preferred alternatives. Additionally, due to the narrow street widths and overhanging tree canopy, RC&A selected the wastewater alignments that would accommodate local traffic and emergency vehicles as well as having the least impacts on existing trees.
Del Valle Service to Annexed Area, Water and Wastewater Improvements - Austin, Texas
The Del Valle Annexation Area covers approximately 1,177 acres located southeast of downtown Austin. The annexed area is located just adjacent to SH71, just north of the Austin-Bergstrom International Airport. The purpose of this project is to provide water and wastewater services to the Del Valle Annexation Area. RC&A was selected to perform engineering services to design water and wastewater improvements for Service Area 2, of approximately 448 acres of mixed land uses that will undoubtedly change over time to airport-related commercial / industrial land uses. The water improvements consisted of approximately 11,000 of 16 diameter water line, 3,700 of 12 diameter water line and the associated appurtenances. The wastewater improvements consisted of approximately 3,000 of 15 diameter wastewater line, 4,700 of 12 diameter wastewater line and 3,200 of 8 diameter wastewater line as well as the necessary service lines and manholes.
North Oaks Annexation Area, Water and Wastewater Improvements - Austin, Texas
RC&A is the prime consultant for this project. The proposed project is along Walnut Creek just east of Interstate 35 and north of Braker Lane in the North Oaks Subdivision. The City of Austin annexed this area in October, 2005. RC&As assigned project area for the proposed water and wastewater improvements included North Oaks Drive, Oak Trail Drive, Oak Haven Road, Dove Haven Road, Walnut Creek Drive and Olmos Drive. The proposed water & wastewater improvements located within the RC&As project area consisted of approximately 11,200 lineal feet of wastewater line and approximately 3,000 lineal feet of water line. The work included creek access and stabilization along Walnut Creek. Unique and challenging traffic control plans were created for each specific work zones. A pavement restoration plan was developed to carry through four temporary patches during construction to final restoration surfaces. The service area includes over 220 existing homes that are currently on septic systems. Efforts were taken to convert the vast majority of the services to a gravity system.
The project site for the 18 wastewater line is located at an area from Shoal Creek Boulevard and 49th Street on the south, along Hancock Branch passing Hancock Drive, Burnet Road and North Loop Boulevard over a distance of over 3,000 feet. The improvements consists of approximately 3,200 lineal feet of 18 diameter wastewater line with nearly 1,700 lineal feet requiring steel casing for bores, 36 new wastewater manholes, and significant amounts of traffic control during construction, pavement repair and appurtenances. Another component of the project involves an 8 wastewater line from Shoal Creek Boulevard and 46th Street on the south, heading north along Shoal Creek Boulevard to Woodview Drive, then west and south to the dead end of Hilwin Circle for a distance of approximately 1,400 feet. The final component of the project consists of the tunneling of approximately 70 lineal feet of a 48 diameter wastewater main from Hilwin Circle to Shoal Creek.
Other Water and Wastewater Improvement Projects:
Decker Lane Water Line Improvements - Austin, Texas Nuchols Crossing Water Line Adjustments - Austin, Texas Rio Grande Water Line Adjustments - Austin, Texas Guadalupe Street Water Line Adjustments - Austin, Texas 30th Street Water Line Adjustments - Austin, Texas Nueces Street Water Line Adjustments - Austin, Texas Manchaca Road Water Line Improvements - Austin, Texas 12th Street and Rosewood Street Water & Wastewater Improvements - Austin, Texas City of Austin, Street Rehabilitation Program, 1994 -1995 and 1995 - 1996 (Brazos Street, San Jacinto Blvd,Barton Springs Road, Burton Drive and East 12th Street) Water & Wastewater Improvements - Austin, Texas Royal Crest Drive, Woodland Drive, Willow Creek Drive and Gladeline Drive Water Line Adjustments - Austin, Texas