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Greylock Environmental, Inc.

Providing Water Resources and Environmental Services
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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

     - Asbestos Sampling

Groundwater Studies     

     -Groundwater Mapping

-Contaminant Plume Mapping

-Well Installation

-Aquifer Testing

-Water Quality Testing

Geophysical Surveys    

    -Seismic Surveys to Determine the 

     Depth and Yield of an Aquifer

Environmental Permitting 



Erosion & Sediment Control

     - Preparation of Storm Water Pollution Prevention Plans

     - Erosion & Sediment Control Leads(CESCL)

Expert Witness

     - Groundwater

     - Environmental Cleanups

Nearshore Fill Construction

Stormwater Sampling


Contact Information:
Greylock Environmental, Inc.
720 S. 333rd St., Suite 210
Federal Way, WA 98003
(253) 661-3520
Sediment Sampling

Our Clients Include:

Land Owners




Real Estate Professionals



Property Managers

Greylock Environmental, Inc. is a Certified Woman Owned Business (WBE) and Disadvantaged Business Enterprise(DBE #D2F8019850). We can be located on the Central Contractor Registration(CCR), Online Representations and Certifications Application(ORCA) and also hold Transportation Worker Identification Credentials (TWIC).
Greylock Environmental, Inc. is an Equal Employment Opportunity Organization
Environmental Monitoring