Matrix provided a wide range of environmental services to the Arizona Department of Environmental Quality (ADEQ) through an Arizona Superfund Response Action Contract (ASRAC). We have prepared sampling and analysis plans, quality assurance project plans, investigations, and remedial feasibility studies, as well as performed optimization of remedial actions and operations and maintenance for environmental restoration projects. The ASRAC program is a remediation/cleanup program for “orphaned” national- or state-led hazardous waste sites, where no present party can be held responsible for the environmental liabilities associated with site remediation. This work is funded either through the U.S. Environmental Protection Agency Superfund or the State of Arizona Water Quality Assurance Revolving Fund program.

Matrix is currently entering the third year of a second five-year term under our ASRAC contract. To date, We have provided more than $12.8 million in hazardous waste remediation services at more than 12 sites across Arizona. Matrix has implemented enhanced reductive dichlorination with bio-stimulation and bio-augmentation as a source area treatment to remediate solvent-contaminated groundwater and reduce the timeframe and lifecycle costs to reach site closure at multiple sites. To optimize monitoring costs, Matrix recommended modifying sampling protocols for a soil vapor extraction system that eliminated most of the TO-15 laboratory analyses. This modification included replacing laboratory samples with field measurements and resulted in a cost reduction of over 80% between field operations and analytical cost.

In addition to our technical expertise, Matrix’s strategies for planning and scheduling task orders ensures that unscheduled breakdowns and other events do not impact critical path schedules. These strategies include prioritizing subconsultants based on their expected availability, building time into the schedule to proactively account for any needed changes or unavoidable delays, and minimizing mobilizations as much as possible. The importance and success of these strategies is evidenced in our proven track record: 89 task orders completed or in progress on time and within budget. Moreover, preliminary work results of active task orders indicate remediation goals will be achieved sooner than expected.