SUBJECT: PARTICIPATION IN SOUTH BAY COUNCIL OF GOVERNMENTS (COG) PROGRAM TO PROVIDE AERIAL PHOTOGRAPHY SERVICES FOR CITY OF HERMOSA BEACH AND OTHER SOUTH BAY CITIES

 

Recommendation:

That the City Council:

1. Approve the request to participate in the South Bay COG program to provide aerial photography services (orthophotography) for the City of Hermosa Beach and adjacent South Bay cities.
2. Appropriate $17,815 as the city’s discounted program cost.

 

Background:

The City of Redondo Beach initiated discussion with an aerial photo vendor to provide digital orthophotography (aerial photography containing contour grade elevations in a digital format) in 1999 and approved a bid in March 21, 2000.

The South Bay Cities GIS Working Group (which is part of the South Bay Council of Governments (COG) has coordinated adjacent city participation in the City of Redondo Beach bid as part of an area wide cost saving measure. The vendor is Digital Mapping Associates (DMA). The cost savings results from flying the area at one time rather than separately flying each city. Each city will contract individually with the DMA to provide aerial mapping services, but the contract proposals reflect a 9% discount for cities participating in the area wide program.

 

Analysis:

Orthophotography uses a global positioning system to establish ground control points for aerial mapping. The City will be flown and photographed providing stereoscopic coverage. This photo will be transferred to a digital file for use by the City. The aerial photos can be printed from 30"x40" mylar sheets or from a digital file via computer. Street names, city boundaries, and other aerial photo sheet information will be added digitally to the photos. The proposal includes:

• (1) set of 9" x 9" contact prints of the city wide aerial photo.
• (1) photo line index of the aerial photo.
• (1) set of field data including horizontal and vertical control positions.
• (1) plot of the ground control points.
• (1) copy of analytical aerotriangulation results.
• (1) set of digital orthophotos on CD-ROM.
• (1) set of mylar orthophoto plots at 1"= 40’ for reproduceable prints.
• (1) color mosaic photo of the entire City at 1" =300’ wall photo

The cost for each of these services are identified on the attached proposal and include a 9% discount based on area wide participation.

Staff is requesting that funds be appropriated now in order to participate in the aerial to be flown in April which is the clearest season to shoot aerial photos. The photos will be used for Public Works, Community Development, Police and Fire Departments for program and planning purposes.

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