Owner: City of Austin, Watershed Protection & Development Review Department
Contact: Mr. Charles Lesniak, P.E.
Title: Project Manager
Address: 505 Barton Springs Rd., #12, Austin, TX 78704
Phone number: (512) 974-2699
Completion Date: December 2005
Cost: $600,000 (Fee)
Project
Description:
This project has received the Texas Council of Engineering Companies 2007 Engineering Excellence Awards (EEA) Silver Medal Award for its outstanding contribution in the environmental category. The City of Austin needed to rehabilitate an existing and contaminated landfill beneath Mabel Davis Park, which is one of Austin’s most environmentally impacted parks. Because of its very sensitive nature, the City was prompted to enact a rigorous study to analyze the effects of hazardous contaminated soil beneath the park land and restore the park’s condition. One goal was to cut off surface infiltration and reduce seepage of dry weather flow back to the channel. This included tree removal and the placement of 18 inches of clay liner over the surface of the impacted area.
Services Provided:
CAS, serving as sub-consultant to URS Corporation, was asked to perform hydrology modeling to determine existing and post-development conditions for design. Services included watershed modeling using the United States Environmental Protection Agency‘s SWMM and HEC-HMS programs, calibration of SWMM model using flow measurements, hydraulic structure design for a wet pond, energy dissipater design to mitigate erosion of the clay liner that seals the hazardous contaminated soil, evaluation of options for natural channel design, and erosion and sedimentation control design.
|
