A. The Contractor shall develop an operations plan/procedure for the drain inspection and cleaning, utilizing the information in the contract documents. Refer to Section 10.5, Submittals/Reports for the required submittals and reports. The submittal shall include the Best Management Practices Plan (BMP) that will be implemented. The BMPs shall in general follow the State’s Storm Water Management Program Plan (SWMPP). The SWMPP is available online at stormwaterhawaii.com for viewing or download. Include sequence of actions with timeline for the storm drain inspection and cleaning. The Contractor shall explicitly specify a weekly or monthly schedule. B. The Contractor shall inspect all the drains listed in the Appendices and record its findings in a format approved by the State. Refer to Section 10.8, Storm Drain Inventory and Location for more inspection information. C. Storm drain structures shall be inspected and cleaned during the work hours described in Section 10.9. D. The Contractor shall remove and replace bolts on all inlets as-needed. The Contractor shall have the necessary tools and equipment to safely remove and clean all storm water inlets. A State or designated inspector must verify all structure are secure prior to opening lanes to traffic. The Contractor is responsible to replace all lost, stripped, rusted bolts. Replacement of bolts and hardware are reimbursable under the Miscellaneous bid item. E. The Contractor shall remove and properly dispose of all vegetation and/or debris in and between each drainage grating including debris/sediment/trash between each grate bar, and/or curb inlet, and the area within a ten (10) foot radius of each drainage grating and/or curb inlet, during each inspection and cleaning event. F. The Contractor shall clean all drain structures that have deposited sediment and debris that is higher than one-fourth (1/4) of the height to the lowest pipe or connecting structure (refer to the One Fourth Debris Accumulation Detail below), or as directed by the Engineer. Cleaning shall be completed within 28 days of the inspection date or from the date the drain structure is determined to be cleaned by the State or representative, and consist of removal and proper disposal of the sediment and debris. The removed sediment and debris shall become the property of the Contractor and the material shall be disposed of in strict compliance with all rules and regulations of the Federal, State, and other environmental protection agencies. The Contractor is responsible for dewatering any wet materials. Materials shall not be allowed to leak through the sides of any vehicle or equipment. The Contractor may choose to utilize a vacuum truck at his/her own expense. Copies of any disposal manifests that are generated as a result of this project shall be submitted to the State with the monthly invoice.
