Seattle Parks and Recreation contracted with SoundEarth for over a decade to complete environmental investigations on more than 80 separate projects, including 70 Phase I ESAs and numerous Phase II ESAs. Project tasks included Remedial Design, remedial system design review, engineering cost estimating, Underground Storage Tank assessment and decommissioning, sediment assessments; risk assessment including hazardous building material surveys, asbestos and lead-based paint surveys, and abatement oversight. Properties varied greatly in size and complexity and ranged from small, undeveloped parcels to large multi-parcel properties covering several acres with complicated land use histories.
For the Bryant Building property located on Portage Bay, SoundEarth completed Phase I and II ESAs. After recognized environmental conditions were identified in the Phase I ESA, a Phase II ESA was conducted to delineate impacts from petroleum hydrocarbons, polycyclic aromatic hydrocarbons, metals, and volatile organic compounds. SoundEarth supported planning efforts by providing several Remedial Action options and plans with associated cost estimates. SoundEarth also provided public involvement support by negotiating with project stakeholders, and facilitating discussions about capital cost budgeting.
For the former Crown Hill Elementary Playfield, SoundEarth was tasked with review of a prior Phase I ESA and supplemental Remedial Investigation and Feasibility Study of a property adjoined by an automotive repair facility and two gasoline service stations. Both facilities had past releases that impacted the soil. Three soil borings were advanced to 20-30 feet below ground surface, and groundwater was not encountered. Our team also collected 19 soil samples for analysis of BTEX. Our review of the subsurface conditions concluded that soil beneath the property had not been adversely impacted as a result of releases that may have occurred at the retail gasoline stations or automotive repair facilities located on the adjoining properties. SoundEarth also concluded that the potential risk for impacts to groundwater beneath the property from these adjoining facilities was low.