SAN FRANCISCO PUBLIC UTILITIES COMMISSION AWARDS HJW CONTRACT FOR PIPELINE MAPPING

Oakland, California, September 16, 2005 – The San Francisco Public Utilities Commission has awarded a contract to HJW GeoSpatial to produce orthophotography for a major pipeline project. The project area is a 35-mile stretch of pipeline that spans from San Mateo County, through Santa Clara County, and into Alameda County.

Color photography will be acquired at a scale of 1:8,400 (1”= 700’), utilizing airborne GPS/IMU. The film will be scanned at a resolution of nine microns (2822 dpi), facilitating the production of orthophotos with a pixel size of three inches. After aerial triangulation, HJW will stereo-compile updates to an existing DTM to ensure that orthophotos will meet national map accuracy standards for 1”= 100’ scale mapping. Once generated, the orthophotos will be seamlessly mosaicked and clipped into a pre-defined tiling scheme. HJW will also provide control and aerial triangulation reports to supplement the deliverables.

The San Francisco Public Utilities Commission (SFPUC) is a department of the City and County of San Francisco that provides water, wastewater, and municipal power services to San Francisco. Under contractual agreement with 29 wholesale water agencies, the SFPUC also supplies water to 1.6 million additional customers within three Bay Area counties.