SoundEarth is a key subconsultant for a five-year on-call contract to provide Sound Transit with Right-of-Way On-Call Environmental Services. Under this contract, SoundEarth is responsible for providing Phase I Environmental Site Assessments (ESAs) and pre-demolition Hazardous Building Material (hazmat) Surveys. The project study area includes single-family residences constructed between 1925 and 1997. SoundEarth has provided public involvement support including communications and coordination with homeowners and Sound Transit. As part of the Phase I ESAs and hazmat surveys, SoundEarth is identifying recognized environmental conditions from on-property and off-property sources, as well as identification and sampling of polychlorinated biphenyls (PCB)-containing materials, asbestos sampling, lead-based paint sampling, and report compilation, all within tight deadlines.
Tasks include oversight and QC of the hazardous materials survey work plan, fieldwork coordination, reporting, and hazardous materials abatement cost estimates, all on tight deadlines. The initial task order included managing rapid mobilization for 12 hazardous materials surveys with coordination of field staff, access to the property parcels, and collection of over 900 samples in three business days. An additional 19 hazardous materials surveys have been completed and another 10 are underway. This work also includes identifying, sampling and reporting of asbestos, polychlorinated biphenyls (PCBs), and lead-based paint. Other services provided by SoundEarth include field support for sediment sampling, where soil cores were collected using hand augers. SoundEarth’s initial task order was to complete 19 Phase I ESAs and for residential properties within the Lynnwood Link Extension alignment to facilitate Sound Transit’s purchase of those properties. SoundEarth’s depth of staff resources and ability to respond quickly allowed us to complete the initial 19 Phase I ESAs in 30 business days. SoundEarth subsequently performed 12 hazardous materials surveys with coordination of field staff, access to the property parcels, and collection of over 900 samples in three business days, to allow Sound Transit to prepare accurate budgets for the eventual demolition and redevelopment of the properties. In total, SoundEarth has completed over 75 Phase I ESAs and 40 hazardous materials surveys.