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seem comparable , the percent cover analyses during subsequent surveys may be restricted to photographic data only , decreasing required in-field time and costs . Video survey data will be collected in digital format (progressive scan mode) along the westem-most 50 m of each transect. If the transect crosses a sandy area (sand-filled depression or trough) before the end of the transect , the transect will be interrupted and continued at the beginning of hard bottom further to the east. This will allow the collection of video data along a total of 50 m of hard bottom . The points along the transect where these sand/hard bottom interfaces occur will be marked by stainless steel pins . During the video survey the camera will be positioned perpendicular to the bottom at a distance of 40 cm . This distance will be maintained through the use of a pair of lasers set to converge at this 40-cm distance . The speed of the diver will not exceed 4 to 5 m per minute ( 10 minutes per transect) to allow maximum resolution of the data . Video lights and filters will be used as needed . Landscape panoramic views of the bottom will be taken at the beginning and end of each 50-m transect. A data slate showing the transect number and survey date will be videotaped at the beginning of each transect survey . The video display will show and record the date and time of data collection . The diver swimming the survey transect will also tow a taut-line buoy with an attached DGPS receiver which will telemeter continuous diver position data to the support vessel for recording into the navigation database. In addition to the quantitative format video taken along the inner 50 m segment of each transect, oblique video will be taken along the entire length of each transect. The videocamera will be positioned at approximately 450 to the seafloor while the diver swims along the transect at a speed of approximately 10 m per minute. These data will provide a qualitative overview of conditions along the entire length of each transect. The quantitative format video data from the 50-m segment will be analyzed for percent cover of algae , attached biota , and substrate. Each 50-m video segment will be divided into approximately 150 contiguous video frames which will be saved to a CD and analyzed using Point Count software . Biota will be identified to the lowest practical level . The pre-construction installation survey will be conducted in August-September 2005, prior to the initiation of dredging and sand placement activities . A survey report will be provided within 60 days of survey completion . CADaaments and Se ingsNonathanglLooal Settings\Temporary tntemet FileskOMEV%mendment 13 scope.doc