Three alternatives were developed to resolve neighborhood flooding caused by off-site drainage and inadequate public and private stormwater infrastructure. PACE provided hydrologic/hydraulic analysis, preliminary drawings, and cost estimates for each alternative and led a public meeting. The preferred alternative was a gravity pipe bypass that required right-of-way approval from multiple agencies and private property owners. PACE prepared SEPA, JARPA, permit, and construction documentation.
City of SeaTac
- Solution Alternatives
- Hydrologic/Hydraulic Analysis
- Stormwater Gravity Pipe Bypass Design
- SEPA & JARPA Permitting
- Right-of-Way Approval
- Construction Documentation