Texoma Area Solid Waste Authority
Texoma Area Solid Waste Authority (TASWA)
TASWA Solid Waste Disposal and Recycling Facility
TCEQ Permit No. MSW-2290
Grayson County, Texas
Overview
Since 1996, provided engineering design, construction management, environmental compliance services, and geologic and hydrogeology services for the TASWA facility.
Greenfield Permitting
- Assisted TASWA member cities during the greenfield site selection process
- Began the initial permitting process with intensive site investigations including
- Subsurface conditions
- Potential wetland areas
- Threatened and endangered species
- Floodplains
- Existing surface water features
- Detailed subsurface and groundwater characterization
- Comprehensive evaluation of 100-year water surface elevations
- Drainage design to meet natural drainage patterns.
- Section 404 Corps of Engineers Permit
Construction Documents and Technical Specifications
- Site entrance facilities and entrance connection to State Highway 56
- Initial and subsequent landfill cells (2005, 2008, & 2013) and drainage facilities
- Final plans, contract documents, and specifications, engineer’s cost estimates
Construction Management
- Bid phase services
- Construction phase services
- Conduct construction meetings
- Review and approve shop drawings, field orders, change orders, construction quantities, pay requests
- Scheduling
- Daily updates
- Construction quality assurance
- Constant communication, evaluation and re-design as material costs increased
Geology and Hydrogeology
- Comprehensive geologic, hydrogeologic, and groundwater characterizations, including
- Identify and characterize the uppermost aquifer
- Establish groundwater flow direction and rate
- Evaluate potential impacts of facility operation on groundwater flow
- Determine impacts to critical receptors
- Determine the appropriate spacing, locations and screened intervals of groundwater monitoring wells
- Location restriction certifications for fault areas and seismic impact zones
- Permit modifications for the 2006 TCEQ rule revisions to Subchapter J – Groundwater Monitoring and Corrective Action
Environmental Services
- Installation of the groundwater monitoring wells and landfill gas probes
- Groundwater sampling, landfill gas sampling, surface water monitoring, analytical laboratory testing
- Statistical evaluation
- Regulatory reporting
Landfill Planning and Engineering Services
- Periodic ground and aerial surveying to update available airspace, compaction rate, site life projections, and target grades for site development.
- Annual MSW report
- Planning for operational issues including
- leachate storage and disposal,
- interior roads,
- stormwater and sediment control,
- stockpile locations and utilization,
- and borrow area grading and utilization.
Drone Services
- Drone flights to collect aerial topography data to estimate airspace consumption