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