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ATTACHMENT A <br /> 2004 Digital Ortho Imagery Acquisition Project <br /> Addendum 1 <br /> Task 1 (Eugene Additions for Floodplain Mapping) <br /> The 3Di West consultant team will provide 2' contours and supporting DTM for sections 170420 <br /> and 170429 within the Eugene project area. The contour DTM will be collected from the 2004 <br /> 1" = 850' photo scale photography. As a result, contours will be classified as non-standard 2' <br /> contours, meeting contour accuracy requirements for a contour interval of 3.0' but generated at <br /> a 2.0' interval. As possible, data will be tied to existing Eugene contour/DTM data. <br /> The data delivery will include layered DTM break lines for hydrology and roads. Additional <br /> break lines, mass points and spot elevations will be provided as necessary to meet the contour <br /> requirement. All mapping will be delivered in AutoCAD .dwg format on CD-ROM. <br /> Total Cost for Task 1= $3,360 <br /> Schedule: Existing materials will be used to generate this product. We anticipate starting work <br /> on this task on or around October 25"' and completing this task no later than November 12"'. <br /> Task 2 (NW Eugene Orthophotos) <br /> The 3Di West consultant team will provide color orthophotography for six (6) quarter-sections in <br /> NW Eugene. Two (2) of the tiles will be generated from existing 2004 1" = 850' photo scale <br /> photography. Four (4) of the tiles will be generated from new photography taken in the fall of <br /> 2004 at a photo scale of 1" = 850'. The the breakdown is provided in Table A. The <br /> orthophotography will be generated at a map scale of 1" =100' and a ground pixel resolution of <br /> 0.5'. <br /> <br /> The City of Eugene will need to provide three (3) ground control points in support of this effort. <br /> <br /> The point locations and features to be measured will be provided by 3Di West after new <br /> photography has been obtained. <br /> Orthophotography will be the or edge matched to existing 2004 Eugene orthos. The color <br /> balance between these images and the existing orthophotography/photography will not match <br /> <br /> due to the change in season and resulting ground conditions. <br /> Total Cost for Task 2 = $2,220 <br /> Schedule: The two tiles that have existing photography (170501 ne & 170512se) will be <br /> <br /> delivered no later than November 12~'. The four tiles requiring new photography and control will <br /> be provided to LCOG within 24 days of the new flight and receipt of control files from the City. <br /> <br /> This date will be noted upon receipt of each and reported to LCOG. <br /> 2 <br /> <br />