2. DREDGING YOUR DOCKS 2012 Organized By CRA Hydrographic Surveyors Orion Marine Group

3. DREDGING YOUR DOCKS 2012 Supported by USCOE Galveston District U. S. Coast Guard Port of Houston Houston Pilots Lone Star Harbor Safety Com.

4. DREDGING PRIVATE TERMINALS Permits Hydrographic & Pre-Dredge Survey Dredge Material Placement Areas Sediment Sampling Dredging Method Selection Cost & Scheduling Dredge Project Management Post Dredge Closeout

5. PERMITS Maintaining a current permit, includes: Current date, owner & information Execute a time extensions - 10 years, if required Amendment to add any potential DMPA Confirm dredge methods Submit any amendments for any new construction Approval process and or public notice Confirm USCOE final approval

6. PERMITS Nation Wide #35 The NWP #35 can be utilized for certain maintenance project. Dredging can be performed to previous authorized depths. Material must be deposited in upland site with proper siltation controls.

7. PERMITS Nation Wide #35 Texas Owners must meet the special provisions. Require owners to obtain a Water Quality Certification from the TCEQ. TCEQ requirements 300 mg/l (TSS) or less suspended solids. It takes about s 1 to 2 weeks to obtain the certification.

8. HYDROGRAPHIC & PRE-DREDGE SURVEY Hydrographic Surveys

9. HYDROGRAPHIC & PRE-DREDGE SURVEY Hydrographic Surveys Survey Recommendations –annually Calculates siltation rates & dredge cycles Help evaluates annual dredge budgets Documents pre- post storm elevations Provides pilots & customers with depth data

10. HYDROGRAPHIC & PRE-DREDGE SURVEY Pre-Dredge Survey Pre-Dredge Survey within two Weeks Compare Contractors with 3rd Party Verify, Quantities, Tide Gauge, & intervals Verify survey datum and station #’s Include over-dredge and side slopes

11. DREDGE MATERIAL PLACEMENT AREA DMPA selection Location Permit Cost Availability

12. DREDGE MATERIAL PLACEMENT AREA Submittal & Approval Process Application Fee Submittal of survey Dredge quantities Sediment samples Approval of application & sediment samples Contract Signing & Deposit (if required)

13. SEDIMENT SAMPLING Sediment sampling criteria. Sampling technique. Number of sediment samples required. Understand submittal & approval process. Acceptable, discretionary, & disapproved. Schedule enough time submittal & review process.

14. SEDIMENT SAMPLING Analytical Testing Metals Organics Hydrocarbons Pesticides Sample result are usually acceptable for 6 months to one year period

15. SEDIMENT SAMPLING Field work Lab analysis Final report Submittal process Approval ***It takes approximately two week to obtain a final report***

16. DREDGING METHOD SELECTION Hydraulic Mechanical Mechanical/hydraulic offloading Hopper dredging

17. Traditional diesel powered dredge Dredges available in different sizes Material is pipelined to spoil area Can move larger volumes of material Requires a larger spoil area HYDRAULIC DREDGING

18. MECHANICAL DREDGING Can be used for relief dredging Several types of mechanical systems Requires multiple handling of material Material can be transported by barge Spoil does not contain much water

19. MECHANICAL HYDRAULIC OFF-LOADING Hydraulic or electric powered Deployed by a crane barge Normally used for short distance pumps

20. COST & SCHEDULING

21. COSTS INCREASES Fuel Costs Steel Costs Disposal Costs Bonds & Insurance Operating & Labor

22. FUEL COSTS

23. STRUCTURAL STEEL COSTS (per ton.)

24. DISPOSAL COSTS (per cu/yd.)

25. DISPOSAL COSTS Availability of suitable DMPA’s. Increase in operating cost. Land acquisitions.

26. OTHER COST INCREASES Construction Costs Government regulations Distance to disposal areas Emission restrictions

27. SCHEDULING Permit amendments – 1 to 6 months DMPA application 2 to 5 weeks Sediment sampling – 2 weeks DMPA contracts – 1 to 4 weeks TCEQ Water Quality Certification – 1 to 2 weeks Pre-dredge survey – 1 week Dredge mobilization & pipeline – 2 to 4 weeks ***Coordinate with dredge availability***

28. SCHEDULING Notification to customers Coordination with vessel traffic Actual dredge time at dock Channel closures

29. DREDGE PROJECT MANAGEMENT Select contractor Notice to mariners Pre-construction meeting Vessel & dredge scheduling Dredge pipeline installation

30. DREDGE PROJECT MANAGEMENT Dredging Manage & test effluent discharge Coordinate vessel traffic Debris & trash Schedule docks Daily time tickets Interim surveys Post dredge survey

31. POST DREDGE CLOSEOUT Review dredge daily logs, and time tickets Review contractors & 3 rd party post dredge survey Evaluate the results Mutually agree on a quantities Submit to DMPA Owner Pay disposal fees Pay contractor

32. PROJECT PLANNING Periodic hydrographic survey Review sedimentation rates Establish dredge cycles Be aware USCOE projects Coordinating with neighboring facilities

33. PROJECT PLANNING – Cont. Keep permits up to date Have a dredging relief plan DMPA applications & contracts Establish alternate DMPA Consider on-site disposal options

34. THANK YOU FOR ATTENDING DREDGING YOUR DOCKS 2012