Big Cliff Remedial Investigation

We led the remedial investigation sampling of soil and sediment contamination at Big Cliff Reservoir, on the Santiam River near Detroit, Oregon. Herrera’s sampling plan guided collection of 85 surface sediment samples and 20 subsurface boring samples during reservoir drawdown, surface sediment samples using a boat and grab sampler from 16 reservoir locations upstream and downstream of the construction debris deposition area, and 20 surface and subsurface soil samples near a vehicle maintenance building. Results from sampling at this challenging site will lead to a more cost-effective, focused remediation plan.