SCOPE OF WORK A. The work of this Contract includes all work necessary to produce complete and fully usable stream restoration and sewer infrastructure as shown and described in the Contract Documents. In general, the work includes the acquisition and placement of natural materials for the construction of streambank and streambed restoration features. These features are intended to prevent erosion, enhance aquatic habitat, and establish a natural stream channel suitable for current and future streamflow regimes. These structures can also provide protection to new and existing sanitary sewer and water conveyance infrastructure to extend their usable life and reduce the risk of pollution due to pipe breakage. Work will also include the planting of native trees, shrubs, and grasses to restore the site following construction disturbance and promote a healthy plant community. B. Construction shall not begin until all erosion and sedimentation control facilities have been installed and approved by the Philadelphia Water Department (PWD). The Contractor shall minimize disturbance within the working area wherever possible and restrict the limit of disturbance to the extent feasible. C. The water and sewer work of this Contract has a designed service life of one hundred (100) years. Because of the great expense involved in detecting, locating, and repairing defects, only the best methods and materials, and the most skilled workmen, shall be used in the performance of this work. D. The paving work of this Contract has a designed service life of forty (40) years. All such work shall conform strictly to the requirements of the Philadelphia Streets Department (for work in City Streets) and of the Pennsylvania Department of Transportation (for work in State Highways). E. Past experience indicates that inadequate compacting of backfill in water, sewer, and stormwater trenches frequently results in premature failure of paving patches. The Contractor will be required to employ the best practices for placing and compacting backfill in order to prevent such failure. F. The Contractor will be required to adhere to the specific excavation of the subgrade preparation and grading as directed elsewhere in these specifications. G. The Contractor shall be required to maintain a clean, functional, and safe worksite at all times. Measures indicated herein are considered the minimum acceptable requirements to maintain a responsible worksite, although site-specific conditions may mandate additional measures on any given project. In such cases, the Contractor is required to be amenable
