GROUNDWATER DEVELOPMENT

PROPERTY TRANSFER
• Lake Union Redevelopment
• Anacortes Refinery
• Seattle & Bethlehem Steel
REMEDIAL INVESTIGATION & CLEANUP
EXPERT WITNESS
WELLHEAD PROTECTION
SOLID WASTE COMPLIANCE
WATER RIGHTS SUPPORT
DATA MANAGEMENT
GROUNDWATER MODELING
WATERSHED ASSESSMENT
AQUIFER STORAGE & RECOVERY
WASTEWATER & STORMWATER RECHARGE
 

Client: City of Seattle
Project: Southwest & South Lake Union Redevelopment
Location: Seattle, Washington

Background
This project targeted 12 industrial properties for redevelopment. Prior to selling the properties, the City of Seattle needed to fully understand any environmental problems related to contaminated soil and groundwater. PGG served as the City’s regulatory and remediation strategist for assessing environmental conditions, estimating costs for possible remedial alternatives, and negotiating with the buyers’ environmental and legal team.

Challenges
This high-profile project involved numerous stakeholders, including attorneys and development experts. A range of environmental conditions affected the soil and groundwater underlying the properties. These conditions were associated with historical fill materials, naturally elevated arsenic and lead concentrations (in groundwater), and a large gasoline release that significantly impacted two parcels for several decades. Distinguishing between local and regional environmental concerns would be key to the transfer process.

Approach
We began by revisiting earlier Phase I and Phase II work, environmental site assessments, and other studies. This information helped us lead the legal and seller team in framing environmental concerns under the current MTCA setting. It also provided a foundation for assessing the costs and risks associated with cleanup options in light of future redevelopment plans.

Outcome
Our final reports and presentations described the site’s environmental issues and outlined various cleanup alternatives, providing a valuable tool for the transfer process. We participated in negotiations and recommended strategies for addressing questions that would likely arise during purchase negotiations.

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