MALAMA I KE KAI - PROTECT OUR HARBOR WATERS. DOT Harbors Construction and Post- Construction Program

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1 MALAMA I KE KAI - PROTECT OUR HARBOR WATERS DOT Harbors Construction and Post- Construction Program

2 Harbors Program Harbors has NPDES permits for MS4s at: Honolulu Harbor. Kalaeloa Barbers Point Harbor. Kahului Harbor.* Consent Decree. SWMP details plan for compliance with the permits.

3 SWMP Definitions Construction = Land Disturbance. Exempted projects: Minor Land Disturbance Post Installation Utility Repair Minor Pavement Repair Maintenance

4 Harbor s Construction Process Project Scoped (Determine Environmental Requirements) Pre-Design Meeting* Permits, Construction, PSMP, and Post-Construction Checklists Project Review Contractor Self Inspections Initial Inspection Regular Inspections Final Inspection Permanent BMPs Long Term BMP O&M Enforcement Actions

5 Design Review Required Documentation by Project Type: Forms available in SWMP Section C and D. DOT Project Tenant Improvement Project < 1 Acre 1 Acre + < 1 Acre 1 Acre + Harbors Notification Form Harbors Design Review Checklist NPDES Permit SWPPP / Construction Plans Harbors Post- Construction Checklist PSMP Harbors Notification Form Discharge or Connection Permit Harbors Design Review Checklist NPDES Permit SWPPP / Construction Plans Harbors Post- Construction Checklist PSMP Discharge or Connection Permit

6 Design Review Checklist

7 Permanent Post-Construction Design Checklist

8 Post-Construction Stormwater Mitigation Plan (PSMP) Drainage Study and Conditions of Concern Identify potential pollutants Identify postconstruction BMPs Complete PSMP Applicable to anticipated activities on the site AFTER construction is completed. Contents: Narrative of project. Site map. Description of potential pollutants. Drainage study and conditions of concern. Post-Construction BMPs. Maintenance requirements.

9 PSMP Potential Pollutants P = potential pollutant. Refer to Section 3.1 of Post-Construction Stormwater Management Manual.

10 PSMP BMP Selection Order of Preference Select from these categories: Low Impact Development (LID). Goal = Keep the stormwater on-site and treat it as a resource instead of a waste. Example = Conserve vegetated areas. Source Control. Goal = Keep potential pollutants from coming into contact with stormwater runoff. Example = Covering a maintenance area. Treatment Control. Goal = Remove pollutants from stormwater runoff. Example = Hydrodynamic separators.

11 PSMP BMP Selection Refer to City and County of Honolulu resources. BMP Manual for Construction. ( pdf) BMP Guide. ( rm_water_bmp_guide_( ).pdf) Rules Relating to Storm Drainage Standards. ( Required capacities: Volume based BMPs must capture 1 inch of stormwater. Flow based BMPs must capture/treat rainfall intensity of 0.4 inches per hour.

12 Plan Review Plan reviewers will look for: Location and size. Direction of storm water flow. Waterways (e.g. coastline, canals) and storm drains. Topography. Ground cover and soil type. Locations of potential pollutants. Land disturbance activities. Staging areas. Non-storm water.

13 Plan Review Plan reviewers will look for: Scheduling / phasing. Is the main land disturbance activity planned for the dry season? (Apr Sep) Have there been efforts to minimize the disturbed area? Responsible parties. Does the Stormwater Pollution Prevention Plan include the names or titles of parties responsible for: Inspections? Maintenance? Recordkeeping? Rain gauge monitoring? Incident reporting?

14 Plan Review Plan reviewers will look for: Temporary BMPs to address all potential pollutants. Plan for final stabilization. Permanent BMPs, where required. LID considered first. Ongoing maintenance plans. Applicable permit applications included.

15 Consent Decree Requirements Use the City and County of Honolulu Stormwater BMP Manual Construction. Specific BMPs within the Consent Decree for: Sites Disturbing 1 acres or more. Roadway paving or repair. Examples: Install inlet protection on all storm drains. Restrict paving when raining. Cover stockpiles.

16 Conducting Construction Site BMP Inspections

17 Construction Review Project review after contract award: Contractor completes Stormwater Pollution Prevention Plan and provides to the Construction Manager (CM). CM will submit to Environmental Section (EE). EE will send their comments to the CM through memorandum. Harbors Division will issue Notice to Proceed to the contractor, specifying: First work order is the installation of BMPs. BMPs must be inspected prior to the start of any land disturbance. EE maintains an inventory of construction sites.

18 Construction Training Requirements Classroom Training for Inspectors: General Program Management. Construction Site BMP Inspections. Conduct at least 3 construction site inspections. Annual Refresher. Information Exchanges: Pre-Bid Meeting. Pre-Construction Meeting. Video training.

19 Harbors BMP Inspections Initial Inspection: BMPs are installed appropriately. Deficiencies must be corrected prior to the start of other construction work. Regular Inspection: October to March: Every two weeks. April to September: Every two months. Deficiencies must be corrected or enforcement will commence. Inspector will provide the contractor with report in five (5) calendar days.

20 Harbors BMP Inspections Final Inspection: When all the following conditions are met: Construction is completed. Exposed soil has been stabilized. Remaining activities have minimal impact on stormwater runoff. Ensure that permanent BMPs are properly installed, if applicable. Deficiencies must be corrected prior to issuance of final payment.

21 Harbors BMP Inspections Review completed Contractor Self Inspections: For sites with NPDES permit: Contractor s self inspections weekly AND within 24 hours of a 0.25 inch rainfall. Signed by duly authorized representative. Ensure contractor has completed or has a plan for completion of maintenance and repair of BMPs. Any changes to BMPs must be documented.

22 BMP Inspection Checklist All inspections must be documented on the Construction Site BMP Inspection Checklist. Included in the Construction Site Runoff Control Manual, Att 4. Environmental Section keeps original for recordkeeping. Copy provided to Contractor.

23 Construction Inspection Checklist

24 Construction Inspection Checklist

25 Harbors BMP Inspections Pre- Inspection Briefing Site Walk Pre-Inspection Briefing. Introductions. Information exchange. Review paperwork: Permits. Training records. Contractor Self-inspections. Corrective action reports. Monthly compliance reports. Updated SWPPP. Post- Inspection Briefing Follow-up

26 Harbors BMP Inspections Pre- Inspection Briefing Site Walk Post- Inspection Briefing Follow-up Site Walk includes review of: All BMPs. Site perimeter. All drains, canals, and receiving waters for discharges. Post-Inspection Briefing Identifies all areas for improvement Follow-up: Correction of deficiencies.

27 Recent Inspection Findings Biosock without 6 overlap.

28 Recent Inspection Findings Solution: Mark 6 on the berm.

29 Recent Inspection Findings Biosock not side-lapped. Acceptable in this instance.

30 Recent Inspection Findings Silt fence must be installed properly.

31 Recent Inspection Findings Inlet Protection required on all drains.

32 Recent Inspection Findings Stabilized construction entrance must be installed per CCH BMP.

33 Recent Inspection Findings Dust fence needed.

34 Recent Inspection Findings Housekeeping Sweep aggregate. Secondary containment for 55-gallon drums.

35 SWMP Enforcement Process Upon discovery, contractor will immediately correct deficiency. Escalating enforcement, as required: Verbal warnings CM. Written warnings. Inspection report CM. Formal letter CM. Notice of Apparent Violation (NAV) CM / HAR-EE. Notification provided to Department of Health. Stop work orders - CM. Withholding of contractor payment. Summons or citations AG. Referral to DOH / EPA.

36 Take Aways All projects must be reviewed prior to start. Projects over 1 acre must include post-construction BMPs. Inspections are required by Consent Decree and NPDES permits. Inspections are an important tool to catch problems before they result in regulatory enforcement. Main goal is to ensure that pollutants are not contaminating receiving waters or MS4. Best if potential pollutants can be kept on-site! It is cheaper to implement BMPs than pay the regulatory fine including stipulated penalties. Be familiar with City and County of Honolulu BMP manual, Harbor s SWMP programs, Consent Decree, and construction documents.

37 Questions Harbors Website: Harbor s Contacts: Reporting Hotline (Harbors Traffic Control): Randal Leong, P.E.: , randal.leong@hawaii.gov. Joy Zhang, P.E.: , ying.j.zhang@hawaii.gov. Spencer Yim, P.E., Spencer.K.Yim@hawaii.gov. Michele Freitas: , michele.gn.freitas@hawaii.gov. MALAMA I KE KAI - PROTECT OUR HARBOR WATERS