Greylock Environmental, Inc. is an Environmental and Water Resources Consulting Firm focusing on accomplishing projects in a cost-effective manner.

Greylock provides the following services:

Environmental Site Assessments
  • Phase 1/Phase 2/Phase 3
Environmental Cleanups
  • Soil, Groundwater, Sediment, Storm Water
  • Consistent with MTCA & CERCLA
Environmental Field Work
  • Soil Sampling
  • Water Quality Monitoring
  • Groundwater Monitoring
  • Sediment Sampling
  • Storm Water Sampling
  • UST Assessment & Remediation
Groundwater Studies
  • Groundwater Mapping
  • Contaminant Plume Mapping
  • Well Installation
  • Aquifer Testing
  • Water Quality Testing
Environmental Permitting
Stormwater Services
  • Preparation of Storm Water Pollution Prevention Plans
  • Stormwater Sampling
  • Discharge Monitoring Report Preparation
Expert Witness
  • Groundwater
  • Environmental Cleanups

Our Clients Include:

  • Land Owners
  • Developers
  • Attorneys
  • Investors
  • Real Estate Professionals
  • Consultants
  • Contractors
  • Property Managers

Greylock Environmental, Inc. is a Certified Woman Owned Business (WBE), Disadvantaged Business Enterprise (DBE #D2F8019850) and King County Small Contractor and Supplier (SCS #1213).

We hold Transportation Worker Identification Credentials (TWIC) and the System for Award Management (SAM) registration.

Greylock Environmental, Inc. is an Equal Employment Opportunity Organization.