- David Hall, M.A., RPCA, Senior Archaeologist #402 2268 Welcher Ave., Port Coquitlam, B.C., V3C 1X4 Phone/Fax (604) 464-4538 arrowstone@telus.net Arrowstone is an archaeological consulting firm based in Port Coquitlam, B.C. with experience in archaeological impact assessments, excavations, lithic analyses, the recording of interior and coastal Culturally Modified Trees (CMTs), monitoring of ...www3.bc.sympatico.ca/arrowstone/homepage.htm