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EARTHWORK Section 02200 15-1207 ability to locate by means of inductive clamping, induction, inductive metal detection, conductive coupling, or TransOnde (Radiodetection) to generate signals, passive locating (free scoping) for "hot" electric, and metal detector. 4. The Underground Utility Locator Service must be able to locate existing utilities at a depth of at least 72". 5. The Underground Utility Locator Service must be able to locate but are not limited to locating the following types of utility pathways: a) All conduit pathways containing 110 volt or greater 50-60Hz electrical wire. b) All conduit pathways containing an active cable TV system. C) All conduit pathways containing wire or conductor in which a signal can be attached and generated without damaging or triggering the existing systems. d) All empty conduit pathways or pipe in which a signal probe or sonde (miniature transmitter) can be inserted. e) All conduit pathways containing non-conductive cables or wires in which a signal probe or sonde (miniature transmitter) can be inserted. f) All plastic and other nonconductive water lines in which a TransOnde Radiodetection) or other "transmitter" can be applied to create a low frequency pressure waive (signal) without damaging or triggering the existing systems. g) All copper or steel waterlines and plastic or steel gas lines 6. All markings made by the Underground Utility Locator Service or other shall be clear and visible. 7. The contractor shall maintain all markings made by Underground Utility Locator Service or other throughout the entire length of the project. 8. The Underground Utility Locator Service shall provide the contractor with two sets of maps showing the location of utilities and average depth. They will be referenced to permanent buildings. Contractor will deliver one copy to the district at no additional charge. 9. Contractor is responsible to contact Underground Service Alert (U.S.A. 800/227- 2600) and receive clearance prior to any excavation operations. 10. Contractor shall inform the (District's Construction Manger) (Architect) (Owner) no later than five (5) days prior to the date scheduled for the utility locator service to be on site. 1.11 PROTECTION A. Adequate protection measures shall be provided to protect workmen and passers-by on and off the site. Adjacent property shall be fully protected throughout the operations. Blasting will not be permitted. Prevent damage to adjoining improvements and properties both above and below grade. Restore such improvements to original condition should damage occur. Replace trees and shrubs outside building area disturbed by operations. B. In accordance with generally accepted construction practices, the Contractor shall be solely and completely responsible for working conditions at the job site, including safety of all persons and property during performance of the work. This requirement shall apply continuously and shall not be limited to normal working hours. C. Any construction review of the Contractor's performance conducted by the Geotechnical Engineer is not intended to include review of the adequacy of the Contractor's safety 4