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Nelson Geotechnical Associates, Inc.
Geotechnical Engineers and Geologists

Ellie Rietveld - Staff Geologist I

Contact Ellie at (425) 364-4235, or via email below:

Email Ellie
Anna SchlunegerOctober 20, 2025woodinville
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Elisabeth Olson - Staff Geologist I

Anna SchlunegerOctober 22, 2025woodinville
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Mikie Marzolf - Office Manager (Woodinville, WA)

Sandra van der LeeJune 2, 2022administrative

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Western Washington

19900 144th Ave N.E Ste 200
Woodinville, WA 98072
(425) 486-1669
info@nelsongeotech.com

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Central & Eastern Washington

105 Palouse Street
Wenatchee, WA 98801
(509) 665-7696
info@nelsongeotech.com

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