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•	Construction Materials
•	Geotechnical Services
•	Pavements
•	Administration

Frequently Asked Questions

Is your shipping address different from your mailing address?

How do I get my products approved for DOT use?

Do you have any conference rooms available?

How do I get to your lab?

Is your shipping address different from your mailing address?

Our mailing address is PO Box 47365, Olympia, WA 98504-7365. Our physical address is 1655 South 2nd Avenue, Tumwater, WA 98512.

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How do I get my products approved for DOT use?

You may have new products approved by submitting an Application for Product Evaluation.

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Do you have any conference rooms available?

We do have a conference room available to DOT employees only. Room capacity allows only up to 40 people. To make arrangements, please call (360)709-5400.

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How do I get to your Lab?

You may get to our Lab by taking the Trosper Road Exit (Exit #102) off of Interstate 5. You will find driving directions by clicking here.

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