Compliance through Science

Cultural resource management in Washington State

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Archaeological Surveys
& Cultural Resource Assessments

A cultural resource assessment is a process designed to provide local, state, and federal agencies, and Tribal governments with the opportunity to assess potential project impacts to historic/archaeological sites, buildings, districts, or properties. Antiquity conducts assessments for SEPA and other local permit reviews, Executive Order 221-02, and Section 106 of the National Historic Preservation Act.


Our staff can typically provide an assessment of your project area within 30 days of a notice to proceed. We are one of few consulting firms in the Northwest that has gone digital, meaning we save you time and money! 


Archaeological Monitoring & Inadvertent Discovery Planning

Antiquity will work with your crew and project management to ensure cultural resource finds are appropriately managed without unnecessary delays. Our staff have extensive experience working on active construction sites in a wide variety of industries, making us uniquely qualified to efficiently manage your project's needs. Antiquity can also assist you with preparation of an inadvertent/ unanticipated discovery plan for your project’s ground-disturbing activities.


Cultural Resources Training


Antiquity regularly provides cultural resources training for project staff who may encounter archaeology during their ground disturbing work. Under RCW 27.53.060, knowing disturbance to archaeological sites requires archaeological permits. An inadvertent discovery of archaeological resources requires consultation with the Department of Archaeology and Historic Preservation, Tribes, and State and local agencies. At Antiquity we take a hands-on approach to teaching this process, including

artifact identification demonstrations which we feel are  beneficial to staff engaging with the training and appreciating our shared archaeological responsibilities


Who We Are

About Our Company

Antiquity was founded in 2018 by Principal Investigator Beth Mathews. Her experience in cultural resource management throughout the Northwest impressed upon her the need to improve quality of archaeological and historical research in the southern Puget Sound, and improve equity in the field of cultural resource management.


Year of Establishment


Projects completed in 2021


Counties served



Our Clients

Most of our clients are private property owners who are developing single-family residences or improving their property. We understand that an archaeological survey is an unexpected project cost, and work to deliver affordable and efficient services. We also understand that the request for a survey is often the last piece of a permit application, and will work with you to meet your project's deadlines. Some of our corporate and government clients include:

American Forest Management

Brown & Kysar
DCC Propane

Drie Zakenleben

EcoGrind Site Solutions

EQT Exeter

Hatton Godat Pantier, Inc.

Kirkbride Group

Marine Floats

Nisqually Indian Tribe

Nisqually Land Trust

Pacific Coast Salmon Coalition

Pierce Conservation District

Platypus Marine

SCJ Alliance

Spring Capital Group

South Puget Sound Salmon Enhancement Group

Thurston Conservation District

Thurston Housing Authority

Waunch Construction & Trucking