656.4.4 Inspection and Record Keeping The Environmental Coord inator must inspect and monitor all controls for the duration of the projec t and keep a written log. This log must include daily on-site precipitation and air temperatur e, as well as the performance, failure, and any corrective action for all controls in place. T he log must be updated at least weekly and after all significant storm runoff and flood events. The Environmental Coordinator must make this log available to the Department upon request. The Contractor will retain the log for three years after the completion of the project. 656.4.5 Additional Measures/Amendment of SEWPCP If there exis ts observable evidence of erosion or sedimentation despite the installation o f all controls in compliance with the Contractor’s approved SEW PCP, then the Contractor must undertake such additional measures as are necessary to stop such erosion and p revent further erosion or sedimentation. Observable evidence of erosion or sedimentation includes visible sheet, rill, or gully erosion, discoloration of water by suspended particles , areas of sediment accumulation, slumping of banks, deposition of soil, and visibl e dust. Such additional measures must be undertaken within 24 hours and completed withi n 48 hours from the time such evidence is observed, unless otherwise authorized by the D epartment. Within 7 days of that time, the Contractor must submit an amendment to its SEWPC P setting forth the apparent cause of the erosion or sedimentation and the additional measures undertaken and that will continue to be undertaken. If the Contractor complies with the requirements of this Section, all additional measures and the amendment of the SEWPC P will be Extra Work and any Delay resulting from the additional measures will be analyzed in accordance with 656.4.6 Duration of Contractor’s Responsibility The Contracto r shall provide temporary soil erosion and water pollution controls in compliance with its SEWPCP and maintain all permanent control features until Acceptance of the Work. Once final surface treatments are established, the Contractor is responsible for r emoval of all temporary sedimentation control practices such as silt fence. Notwithstan ding the preceding sentence, all work needed to remedy damage to properly installed and main tained permanent control features caused by a weather-related Uncontrollable Event shall be Extra Work.
PAYMENT
656.5.1 If Pay Item 656.75 Provided If the Schedule of Items contains Pay Item
656.75for Temporary Soil Erosion and Water Pollution Control, payment will be made on a
Lump Sum basis, payment of which will constitute full and compl ete compensation for all labor, equipment, materials, inspection, professional services, and incidentals necessary to prepare, submit, obtain approval of, and properly implement the Contractor’s SEWPCP. The Lump Sum will be payable in installments as follows: 10% of the Lump Sum once the final SEWPCP is approved and the initial soil erosion and water pollution controls are in place and certified by the Contractor, with the 90% balance to be pai d as the Work progresses at a rate proportional to the percentage completion of the Contract.