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F,7"- <br />DEC <br />Boor 66 <br />ON MOTION by Commissioner Eggert, SECONDED by <br />Commissioner Bird, the Board unanimously awarded <br />the bid for field lighting at Gifford Park to the <br />only bidder, C.R. Dunn, in the amount of $48,914.88. <br />REQUEST FROM ABRAMS AERIAL SURVEY CORP. FOR ADDITIONAL <br />COMPENSATION --BARRIER ISLAND TOPOGRAPHIC SURVEYS <br />The Board reviewed the following memo dated 11/24/86: <br />TO: The Honorable Members of the DATE: November 241 1986 FILE: <br />Board of County Catmissioners <br />THROUGH: <br />Charles Balczun <br />County Administrator SUBJECT: <br />Request from Abrams Aerial <br />Survey Corp. for Additional <br />Campensation - Barrier Island <br />Topographic Surveys <br />, <br />FROM: � <br />James W. Davis, P.E. , REFERENCES: James F. Lim, Abram <br />Public Works Director Aerial Survey, to <br />Abrams Aerial Survey Corporation is requesting $5,246 for additional <br />cattpensation due to alleged control problems associated with the Barrier <br />Island topographic mapping. The mapping is a component of the Beach <br />Management Study that Cubit Engineering is performing. <br />The aerial mapping contract was negotiated on Feb, 26, 1986. Cubit <br />Engineering recommended that Abrams Aerial Surveys perform the work. At <br />that time, the scope of work involved mapping only the Atlantic Ocean <br />coastline. The contractural cost to perform the it -field control surveys <br />was $8,500. The County Administrator and the Beach Preservation and <br />Restoration Cammittee inquired as to whether the County survey crews could <br />perform the survey work and thereby save the County $8,500. It was <br />determined that this work could be performed by County crews. <br />Later, the Board and staff decided to expand the scope of work to include <br />the entire barrier island north of CR 510, as well as Round Island Park. <br />This basically doubled the scope of work and necessary survey work to <br />approximately $17,000 of in -field survey. The mapping contract with Abrams <br />was approximately $50,285. <br />Usually, aerial control points are first located in the field and targeted <br />Prior to flying the photography. However, Abrams decided to fly the aerial <br />Photography first, then select control points to be located in the field <br />from photo identifiable points. <br />When the photos were given to our survey crews, same points, such as real <br />estate signs, trees, etc., were relocated or removed after the photography <br />was flown. The survey crews could not find these points. There were also <br />some points which the survey crews made minor computational errors. <br />28 <br />