Reso 2020-3054 - Laserfiche WebLink

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Draft Scope of Services Citywide Coastal Monitoring Program S a City of Sunny Isles, Miami-Dade County,Florida 1L 1 Septem , SDI Pber. N.2916- 24222016 I)IVI:!'SII:If i) Page 3 of4 monument is located more than 300 feet landward of the vegetation line, data points shall be extended to one hundred (100) foot intervals from two hundred (200) feet landward of the approximate vegetation line to the monument location. The reference monument shall be recorded as range 0.0 along the profile with positive ranges extending seaward of the monument and negative ranges extending landward of the monument. Offshore Profile Data Collection-Bathometric Bathymetric profile data at R-monuments and intermediate points, as applicable, shall be collected as close to high tide as practical and shall extend landward to a depth that overlaps the onshore portion of the survey. Bathymetric profile data collection at R-monuments shall extend offshore a minimum distance of 3000 feet from the shoreline or to -30 feet (NAVD), whichever point is reached first. Bathymetric profile data collection at intermediate profile points shall extend offshore a minimum distance of 1000 feet from the approximate shoreline. Bathymetric data collection shall occur as close to the time of the onshore topographic survey as practical with the objective to not exceed seven (7) days of time difference between the two (2) survey events. Maximum wave height during the course of bathymetric data collection shall be three(3) feet. Bathymetric data shall be collected using an automated hydrographic system comprised of a survey launch equipped with an Odom marine grade sounder with integrated motion sensor, Differential Global Positioning System (DGPS) and computer-based navigation / data collection system. The motion sensor will be employed to reduce the effects of vessel heave, pitch and roll during the course of data collection. The sounder shall be calibrated via bar checks prior to the start of the survey. Prior to the start of the survey a tide staff or gauge will be established in proximity to the project for recording water levels during the course of the data collection activities. The tide staff or gauge will be set relative to published control in the vicinity of the project. Digital Ground Photography During the course of field data collection, digital photographs shall be taken at approximate mid- beach along each profile line. Three (3) photographs shall be captured, one each shore-parallel north and south of the profile and one towards the monument location. An additional photograph of the monument or TBM shall be taken with sufficient clarity to read the monument stamping. Digital images shall be provided to the City of Sunny Isles Beach and BBCS on CD or DVD media in .jpg format at a minimum 640 x 480 resolution. Data Processing and Final Deliverables Upon completion of field survey activities, data will be edited and reduced to the project datum and translated to an x,y,z, ASCII format for submittal to the City and BBCS. In addition, and in accordance with the Specifications, the following deliverables will be provided: 1. Survey report/ monument control report certified by a Professional Surveyor and Mapper. 2. Copies of field books and data collection files, as applicable. (hardcopy and PDF'format) 3. Description of all monuments and TBM's used for the survey, including identification, stamping, coordinates, elevations and profile azimuths. Control description shall be provided in both hardcopy and digital formats (ASCII and Excel) 4. Final profile data in ASCII x,y,z format and FDEP distance / depth format with associated header records 5. ASCII raw data file 6. Digital photographs in .jpg format with appropriate labeling 7. Plan / profile charts in AutoCAD .dwg format 8. Plan / profile charts in hardcopy format(24"x 36°) 9. Metadata files 10. Survey Report Surveying • Engineering • Applications