PHASE I AND II ENVIRONMENTAL SITE ASSESSMENTS

Land Acquisitions Associated with Greenspaces Program, Multiple Sites, Oregon
Client: METRO, Portland, Oregon

Over 75 Phase I environmental site assessments (ESAs), more than 15 Phase II ESAs, and 5 underground storage tank (UST) investigations and/or decommissionings for properties that included farms, woodlands, scenic areas, residences, and a landfill.

REMEDIAL INVESTIGATION AND INTERIM CLEANUP OF DRY CLEANER AND BROWNFIELD REDEVELOPMENT

Former Poly Clean Facility, Lebanon, Oregon
Client: Safeway Inc.

We are currently supervising Remedial Investigation (RI) and interim Remedial Action (RA) activities at a former dry cleaning facility that is under investigation as a potential contributor to regional groundwater contamination. Major project challenges included providing liaison to multiple stakeholders, including the site owner, site lessee, property developers, and several municipalities and regulatory agencies in an effort to expedite investigation and to foster site re-development. Pilot scale testing of a soil vapor extraction (SVE) / air sparging (AS) system was expedited, followed by the installation of a full-scale SVE/AS system to eliminate potentially harmful vapors from migrating into a new structure, and to provide for groundwater "hot spot" treatment.

PHASE I AND II ENVIRONMENTAL SITE ASSESSMENTS, UNDERGROUND STORAGE TANK DECOMMISSIONING, SOIL CLEANUP, AND SITE DEVELOPMENT SUPPORT ACTIVITIES

Museum Place Development, Portland, Oregon
Clients: Portland Development Commission (PDC) and Sockeye Development, LLC, Portland, Oregon

The Museum Place Development includes multiple adjacent properties of mixed use located in downtown Portland. Within the area of this planned development, our firm performed Phase I and Phase II ESAs at the location of an existing grocery store, the adjacent St. Francis Hotel, and the Portland YWCA. Further, we conducted UST decommissioning and construction-related environmental management activities at the hotel. The Phase II ESA activities were conducted on an expedited basis to assess the quality of soil in the vicinity of two former service stations, and to provide an indication of site-wide soil quality. Our company prepared an estimate of possible environmentally-related site development costs and provided recommendations to assist with property acquisition negotiations and future site development activities. We also prepared a Soil Management Plan (SMP) identifying locations with a greater likelihood of containing impacted soils and presented clear procedures to follow if suspected impacts were identified. The SMP was implemented during the course of construction and we quickly responded by coordinating the removal, permitting, and disposal of the impacted soils in such a manner that the construction schedule was not affected.

PHASE II ENVIRONMENTAL SITE ASSESSMENT AND SITE RE-DEVELOPMENT SUPPORT ACTIVITIES

8 NW 8th Avenue Property Redevelopment, Portland, Oregon
Client: Portland Development Commission (PDC) and Central City Concern, Portland, Oregon

Our firm expedited Phase II ESA activities at this former service station property that was to be converted into multi-unit housing. Our efforts were successful in identifying the presence, nature, and extent of petroleum-impacted soils (multiple sources) and groundwater on the property.

We subsequently served as the environmental lead on the re-development design team for this property, assisting with preparation of bidding documents, pre-demolition asbestos abatement, preparation of a Soil Management Plan (SMP), as well as preparation and implementation of a Corrective Action Plan (CAP) to address management of contaminated soils that were to remain in place at the property. A passive soil vapor mitigation system was implemented at the site involving installation of a spray-on vapor barrier and a passive sub-slab ventilation system that can be upgraded to an active vapor extraction system, if necessary.