Oakland, California, January 16, 2006 – HJW GeoSpatial (HJW), Inc., has been awarded a three-year contract to provide landfill mapping services for the Fresno County, CA, Department of Public Works and Planning Resources Division. HJW’s aerial surveys will be used to determine calculations for fill and excavation quantities and/or subsidence for four landfill sites in the County.
Among the services for this contract, HJW will fly aerial photography at a photo scale of 1”= 600’ (1:7200) for the support of 1”=100’ scale mapping with 2’ contours. The topographic digital terrain data will allow HJW to perform surface and volume calculations to support the County’s landfill management.
HJW has extensive landfill mapping experience, and currently has ongoing contracts with Allied Waste (formerly BFI), Sonoma County, Yolo County, and Republic Landfill. HJW has also done rigorous landfill mapping for the City of Palo Alto, CA.
Headquartered in Oakland, CA, HJW GeoSpatial has provided aerial mapping services to government agencies and private clients since 1949. Their professional services include LiDAR terrain modeling with an emphasis on photogrammetric quality control, aerial photography, topographic and planimetric mapping, orthophoto production, GIS integration, and satellite remote sensing services.
Pacific Aerial Surveys (PAS), a division of HJW GeoSpatial, is located in their Oakland office. The PAS photo library makes historic and recent aerial photographs, digital orthophotos, maps and satellite imagery available to the public for environmental, legal, real estate, and facility planning applications. PAS also offers federally-qualified imagery interpretation services as well as expert witness testimony on image interpretation matters.
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