SoundEarth provided technical support to TOC Holdings Co.’s petroleum program since its inception in 2005. Engineering tasks include conducting and compiling feasibility studies and disproportionate cost analyses; preparing detailed cleanup action plans and engineering design documents; conducting pilot tests, bench-scale tests, and treatability studies to develop the most efficient methods for removing contaminants from the subsurface; designing a variety of in-situ remediation systems, including those that incorporate dual-phase extraction, air sparge, soil vapor extraction, and groundwater recirculation; developing and implementing chemical injection programs that utilize hydrogen peroxide, sodium persulfate, and a number of oxidants and surfactants; and conducting confirmation soil and groundwater sampling to evaluate the effectiveness of the remedial actions. SoundEarth has designed, bid, and observed the installation of systems at six facilities and designed and implemented chemical injection programs at 11 facilities since 2005. SoundEarth has secured No Further Action determinations for 16 sites in this program, with 11 more pending and the remainder expected to be received within the next five to seven years.

This successful petroleum program has provided SoundEarth Strategies a wide array of experience implementing a number of site-specific cleanup technologies. It has also allowed us to apply a program management system that efficiently manages a multitude of activities conducted at numerous sites, as well as administrative reporting to the client and regulatory agencies that aids in the clear understanding of the site closure plan. The scope of work for the program includes identifying affected media and associated chemicals of concern in accordance with applicable regulatory guidance documents; coordinating, permitting, and observing the removal of underground storage tanks and associated petroleum-contaminated soil and groundwater; and preparing reports under the guidance provided by the Washington State Department of Ecology or the Oregon Department of Environmental Quality. Additionally, several of the sites are impacted by commingling plumes from releases at two or more properties; costs for cleanup activities are frequently allocated based on the findings of forensic analyses. Throughout these endeavors, SoundEarth’s project planning and implementation techniques have successfully incorporated the priorities of the stakeholders while keeping the work as cost-effective as possible for our client.

Engineering tasks include conducting and compiling feasibility studies and disproportionate cost analyses; preparing detailed cleanup action plans and engineering design documents; conducting pilot tests, bench-scale tests, and treatability studies to develop the most efficient methods for removing contaminants from the subsurface; installing a variety of in-situ remediation systems, including those that incorporate dual-phase extraction, air sparge, soil vapor extraction, and groundwater recirculation; developing and implementing chemical injection programs that utilize hydrogen peroxide, sodium persulfate, and a number of oxidants and surfactants; and conducting confirmation soil and groundwater sampling to evaluate the effectiveness of the remedial actions. SoundEarth designed, bid, and installed systems at six facilities in 2008 and designed and implemented chemical injection programs at 11 facilities in 2008 and 2009. SoundEarth has secured No Further Action determinations for 16 sites in this program, with 11 more pending and the remainder expected to be received within the next five to seven years.

This successful petroleum program has provided Sound Environmental Strategies a wide array of experience implementing a number of site-specific cleanup technologies. It has also allowed us to apply a program management system that efficiently manages a multitude of activities conducted at numerous sites, as well as administrative reporting to the client and regulatory agencies that aids in the clear understanding of the site closure plan. The scope of work for the program includes identifying affected media and associated chemicals of concern in accordance with applicable regulatory guidance documents; coordinating, permitting, and overseeing the removal of underground storage tanks and associated petroleum-contaminated soil and groundwater; and preparing reports under the guidance provided by the Washington State Department of Ecology or the Oregon Department of Environmental Quality. Additionally, several of the sites are impacted by commingling plumes from releases at two or more properties; costs for cleanup activities are frequently allocated based on the findings of forensic analyses. SoundEarth has secured No Further Action determinations for 16 sites in this program, with 11 more pending and the remainder expected to be received within the next five to seven years. Throughout these endeavors, SoundEarth’s project planning and implementation techniques have successfully incorporated the priorities of the stakeholders while keeping the work as cost-effective as possible for our client.