City Hall East Parking Lot LID Retrofit

Banner - Complete
  1. Related Closures and Project Updates
  2. Funding
  3. Learn More

The East City Hall Parking Lot LID Retrofit Project is in the City's approved 2024-2029 Capital Facilities Plan project TR1215.  This project seeks to retrofit the East City Hall parking lot with new stormwater detention and treatment infrastructure while also serving to showcase low-impact development (LID) techniques for local developers.  Check out all the project features that will help manage runoff, slow down peak flow, and remove pollutants before connecting into Peabody Creek (shown on image below).  

The project design consists of a porous asphalt parking lot over top an aggregate stormwater storage reservoir to detain runoff and slowly release it into a bioretention cell in the grassy area outside City Hall.  Additionally, a bioretention cell will be installed along Peabody Street to capture and treat additional runoff from the surrounding tributary roadway.  The project will install five cisterns under the roof line that will serve to collect roof runoff and water the bioretention cell.  This design will slow down the stormwater discharge rate, reducing the peak flow to Peabody Creek, treating the parking lot runoff, removing common pollutants link zinc, copper, and petroleum hydrocarbons.  
Herrera Environmental Consultants, Inc. was retained by the City to complete the design and the Department of Ecology accepted the final design in May of 2023.  

The City's application for construction funding was accepted by the Department of Ecology and a grant agreement was executed in November of 2022.  The project was advertised for construction bids in December 2023 and awarded to Bruch and Bruch Construction, Inc. of Port Angeles, WA on February 20, 2024.  

Construction is complete and the parking lot was officially opened on September 9, 2024!
City Hall SW system