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Anthony Niles Engineer Research and Development Center Alexandria, Virginia

Anthony Niles Engineer Research and Development Center Alexandria, Virginia. Issue : Longitudinal survey lines and sparse cross-sections used to certify dredged channel.

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Anthony Niles Engineer Research and Development Center Alexandria, Virginia

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  1. Anthony Niles Engineer Research and Development Center Alexandria, Virginia

  2. Issue: Longitudinal survey lines and sparse cross-sections used to certify dredged channel Next Step: Dialogue with district to determine reason for survey approach; encourage more common format with more cross-sections.

  3. Issue: Long turn-around time for after-dredge survey and data processing, producing idle time for dredge. Corps Surveyors Suggestion: Preliminary results produced and available within 24 hours of completion of survey. Dredgers Suggestion: Corps survey expert onboard and monitoring dredge or 3rd party survey boat to certify survey. Next Step: Further discussion needed with Corps surveyors.

  4. Issue: Surveys as old as 30 months provided to contractor to estimate dredging job. Next Step: Dialogue with districts to determine reasons for old surveys; lack of funds, unavailable personnel, other. Issue: Improper application of Survey Manual in contract specifications and acceptance of dredge results. Next Step: Memorandum to Corps districts advising that Corps surveyors be included in review of contract specifications and be present at pre-construction meetings.

  5. Hydrographic Survey Engineer Manual Original Plan: Workshop at the U.S. Hydro Conference, May 2007. New Plan: Collaboration via email and download of Word documents; • Chapter 4: Survey Accuracy Estimates for Dredging and Navigation Projects • Chapter 11: Multibeam Depth Measurements • Chapter 15: Dredge Measurement and Payment Volume Computations • Chapter 22: Contracted Survey Specifications And Cost Estimates • Chapter 3: Accuracy Standards, QC/QA • Chapter 9: Single Beam Depth Measurements • Chapter 14: Dredge Support Surveys • Chapter 21: Depth Measurement Over Irregular or Unconsolidated Bottoms

  6. Hydro Survey Community of Practice • Next meeting; October 29 – November 2, 2007 • Trump Marina Plaza, Atlantic City, NJ • Participation by dredging and survey contractors sought

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