Environmental Stewardship
Making an Impact
Environmentally conscious infrastructure is incorporated into Mini Mart City Park (MMCP) from the ground up. From our subsurface soil remediation system that actively removes the site’s residual biocontaminants, to our solar array that powers this specialized remediation system with the energy of the sun, we have introduced methods for sustainability and environmental care at every opportunity. This work is contextualized by the environmental negligence historically imposed on the surrounding Duwamish Valley, and the Environmental Protection Agency’s SuperFund Classification applied to the nearby Lower Duwamish Waterway.
Our green infrastructure plays a vital role in supporting environmental and community resilience by creating a space for local residents and visitors to gather, learn about, and participate in environmental action taking place in the Duwamish Valley. Further, we serve as an educational site and case study for how small brownfields can be reclaimed and revitalized in the Duwamish Valley and beyond.
Air-Sparge Soil Vapor Extraction Remediation System
Mini Mart City Park is situated on land that was once used as a fuel-storage and distribution facility. Early and ongoing testing has concluded that this former usage has left petroleum contaminants in the subsurface and passing groundwater at concentrations greater than Washington State’s required cleanup levels. To conscientiously remediate these contaminants, and as part of our capital campaign, we installed an underground air-sparge soil vapor extraction system that actively cleans the soil. This specialized system is an integral component of the MMCP’s facility and requires ongoing monitoring to better understand and assess the remediation efforts happening onsite.
For up-to-date test results, click here for our recent report.
Green Stormwater Infrastructure
MMCP has taken a holistic approach to managing stormwater through green stormwater infrastructure (GSI) that aims to capture and/or filter 100% of our annual rainfall. Current GSI includes 500 square feet of green roof gardens, two extensive bio-retention planters, permeable hardscaping, and park landscaping with native and drought-tolerant plants. Recent expansions include an ~800 gallon water catchment system designed and installed in partnership with Seattle-based artist Buster Simpson, two vertical rain gardens, and additional site-wide plantings.
Solar Expansion
The solar and battery backup storage system at MMCP plays a vital role in reducing energy demand while optimizing our energy-efficient, LEED-standard construction. Designed to sustain operations for up to 72 hours during an extended power outage, this system ensures reliable energy access in emergencies. The investment in solar power was funded by the Duwamish Valley Program and aligns with the programmatic priorities identified in the Duwamish Valley Action Plan.