Site Investigation and Remediation Services

Dry Cleaning Facilities - Wisconsin

Saga personnel has provided site investigation and remediation services at multiple dry cleaning facilities throughout Wisconsin. At one location, Saga personnel designed both an overall site investigation scope of work and a targeted shallow soil investigation scope of work to evaluate shallow soil conditions following building demolition and prior to building reconstruction. Saga personnel worked within an aggressive schedule of approximately four weeks from notice to proceed through excavation and disposal, including site characterization, remedial planning, hazardous waste determination, Wisconsin Department of Natural Resources approval, and coordination of transportation and disposal of both hazardous and non-hazardous soils. Saga personnel designed and coordinated installation of a sub-slab depressurization system to mitigate potential vapors from residual contamination left in place following excavation, prior to the new building being built. Following construction of the new building, Saga completed installation of a groundwater monitoring network and is currently evaluating the extent of groundwater contamination, the potential for vapor intrusion (VI) into nearby buildings (including working with the local school district to evaluate the VI pathway at a school building), and potential remedial options.

Chlorinated Solvents and Semi-VOCs in Soil and Groundwater Clean Up - Wisconsin

Saga personnel worked with attorneys to provide a client environmental consulting services for a property in Southeastern Wisconsin. The previous property owner was responsible for release and clean up of chlorinated solvents and semi-Volatile Organic Compounds (VOCs) in soil and groundwater at the site. Saga personnel worked with the attorneys on behalf of the then current property owner to estimate remaining environmental liability for the site. This was a Voluntary Party Exemption (VPLE) site and Saga personnel worked to support their client to ensure his satisfaction with the level of clean up on his property. The property was recently purchased by a local utility company and is currently being utilized for production of bricks that incorporate fly ash.

Deconstruction and Remediation, Aluminum Smelter - Washington

Saga staff played a key role in the team of environmental professionals retained by an aluminum company to provide remedial investigation and remediation oversight concurrent to deconstruction of approximately 60 acres of building footprint and clean up of a 110-acre aluminum smelter facility. The bulk of remedial clean up was expedited over an approximate eight-month period in an effort to meet conditions of a regulatory order and facilitate property transfer. All project activities were planned and carried out with the additional objective of future cost recovery negotiations with the former property owner. Remedial activities were completed in multiple source areas impacted with a variety of contaminates including petroleum compounds and related constituents, heavy metals, fluoride, cyanide, and polychlorinated biphenyls (PCBs). Saga personnel prepared the bulk of the Clean Up Verification Report that was completed within 30 days following the end of remediation. The Clean Up Verification Report was comprehensive enough to facilitate site closure from the Washington Department of Ecology and property transfer to a prospective purchaser. In addition, Saga staff provided cost recovery analysis and negotiation support that assisted the client in settling favorably with the former property owner.

UST Investigation and Remediation Program, Petrochemical Company - Oregon

Saga staff designed a tank investigation and remediation program. Remedies included risk-based corrective action (RBCA), hydrocarbon product recovery, groundwater recovery, vacuum-enhanced groundwater recovery, physical and chemical groundwater treatment, in-situ air-sparging, passive and active soil venting, and in-situ and ex-situ bioremediation. In addition to the activities described above, support was provided for operating bulk storage/terminal facilities including storm water management, permitting, and compliance monitoring.

UST Decommissioning and Soil Remediation, Former Fuel Station Site - Washington

Via a multiple party litigation and court judgment, Saga was retained by a law firm, on behalf of several insurance companies, to facilitate remediation of a petroleum release identified at a former gasoline fuel station. Saga prepared contractor bid specification development and selection, state environmental permitting, conducted environmental documentation and oversight, and provided liaison with multiple stakeholders including property managers, tenants, construction contractors, geotechnical, design, and shoring engineers, insurance carriers, and attorneys. Due to widespread extent of soil impacts, soil removal was conducted in close proximity to multiple site structures and an adjacent highway requiring engineered shoring. Soil sampling and laboratory analysis were expedited to facilitate project completion since nearby site structures were concurrently operated by site tenants.
Subsequently, Saga was retained to complete delineation of residual soil impacts in proximity to buildings and the adjacent roadway, re-establish a viable groundwater monitoring well network, provide long-term groundwater monitoring, and evaluate potential remedies to address residual soil and groundwater impacts to bring the site to closure; pilot testing of applicable technologies are in progress. Saga's activities included preparation of estimates of potential future costs for residual soil and groundwater remediation to support carriers in possible reserve allocation.

Chlorinated Solvents and Semi-VOCs in Soil and Groundwater Clean Up - Wisconsin

Saga personnel worked with attorneys to provide a client environmental consulting services for a property in Southeastern Wisconsin. The previous property owner was responsible for release and clean up of chlorinated solvents and semi-Volatile Organic Compounds (VOCs) in soil and groundwater at the site. Saga personnel worked with the attorneys on behalf of the then current property owner to estimate remaining environmental liability for the site. This was a Voluntary Party Exemption (VPLE) site and Saga personnel worked to support their client to ensure his satisfaction with the level of clean up on his property. The property was recently purchased by a local utility company and is currently being utilized for production of bricks that incorporate fly ash.

Chlorinated Solvent Characterization of Impacted Soil and Groundwater, Attorney - Oregon

Saga staff was retained by a law firm, on behalf of several insurance companies, to complete characterization of impacted soil and groundwater and evaluate potential remedial measures following discovery of chlorinated solvent contamination of soil and groundwater within the Port of Tigard (Portland), Oregon's Cascade Station redevelopment area. Services involved investigations to further characterize the nature and extent of contamination, evaluate properties influencing groundwater flow and transport overlying a sandy gravel drinking water aquifer, assess and evaluate interim and long-term remedies, and recommend remedy selection. Saga staff completed a Feasibility Study (FS) in support of an interim remedy that involved source area treatment and minimization of off-site groundwater and surface water transport to address immediate Oregon Department of Environmental Quality (Oregon DEQ) concerns, and facilitated re-development of the property in a timely manner. Oregon DEQ approved the FS, and Saga staff prepared a remedial design/remedial action (RD/RA) work plan. In addition, Saga developed implementation costs that were utilized to support settlement negotiations between the current and past property owners and insurers.

Geological and Hydrogeological Review, Gravel Mining Operations - Oregon

Saga staff evaluated geologic and hydrologic information, including well construction logs, to evaluate the potential for gravel mining operations at several locations in Oregon to affect groundwater quantity and quality. The evaluations focused on the potential to influence private water supply wells near the quarries.