Base comprehensive plan and GIS development activities shall include aerial photogrammetric mapping; field surveying, digitization; preparation of a GIS database; utility system investigations and analyses; query development; facility management planning; global positioning systems and computer aided drafting and design (CADD) systems. Contact Susan Yarbrough, Contract Specialist, (916) 557-7479; Judith E. Grant, Contracting Officer (916) 557-5244. Or E-mail: