Chartwell Channel Stabilization & Erosion Control

The City of Fair Oaks Ranch is requesting sealed bids for the Chartwell Channel Stabilization & Erosion Control Project, with bids due August 25, 2026.

The scope encompasses channel stabilization and erosion control work along the Chartwell drainage corridor, including removal and replacement of approximately 113 linear feet of wire fencing; installation of 67 square yards of 15-inch D50 rock riprap in the main grade channel with a maximum longitudinal slope of 2.0% and minimum 10-foot bottom width; installation of 585 square yards of erosion control blanket with topsoil and drill seed; placement of a 10-foot vehicular access gate; construction of concrete drop structures with reinforced concrete aprons; removal of dead trees; and Level II tree preservation measures for existing trees within the work area. Concrete work must meet TxDOT standards with a minimum 4,000 PSI compressive strength at 28 days, and reinforced concrete must comply with ACI Manual of Standard Practice #315. The contractor bears full responsibility for all erosion and sedimentation control measures, temporary and permanent stabilization, site inspection at least every 14 calendar days and within 24 hours of storm events exceeding 0.5 inches, utility locates via 811 calls, dust control, and stormwater pollution prevention. Final site stabilization requires grass coverage of at least 95 percent with no bare spots exceeding 16 square feet, positive drainage, and 95 percent compaction on fill materials. Work must comply with Texas Commission on Environmental Quality standards and Edwards Aquifer regulations. The project is located in Fair Oaks Ranch, Texas (Bexar County). Final construction plans and specifications are available in the attached Plans (1).pdf, prepared by HWL Ochner (TBPE Firm No. 10488).