8197 West Brandon Drive
Littleton, CO 80125
Phone: 303-756-2900, 866-756-2900
Website: AdvancedEI.com
Email: info@advancedei.com
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Email: nelkins@csd-eng.com

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4775 Centennial Blvd., Ste 106
Colorado Springs, CO 80919
Phone: 866-994-8315
Fax: 719-535-0402
Website: ESI-Website.com
Email: ragranica@esi-co.com

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4141 Arapahoe Avenue, Suite 101
Boulder, CO 80303
Phone: 303-245-7073
Fax: 303-245-7075
Website: Exponent.com
Email: dtransue@exponent.com

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3030 South Tejon Street
Englewood, CO 80110
Phone: 303-762-8487, 1-800-580-7047
Fax: 303-762-8510
Website: Phoenix-Investigations.com
Email: phoenix@phoenix-investigations.com

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6275 Joyce Drive, Suite 200
Arvada, CO 80403-7541
Phone: 303-552-0177, 866-552-5246
Fax: 303-552-0178
Website: PieForensic.com
Email: csellers@callpie.com

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9457 S.  University Blvd., Littleton, CO 80126
Phone: 877-782-6391
Fax: 770-444-9808
Website: PTCInc.com
Email:jenna.jahn@ptcinc.com

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2 Oakwood Park, Suite 200
Castle Rock, Co 80104
Phone: 303-660-4395
Fax: 303-660-4396
Website: VeritechEng.com
Email: info@veritecheng.com

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12421 East 37th Ave
Denver, CO  80239
Phone: 303-757-4000
Fax: 303-757-4222
Website: WERC.com
Email: info@werc.com