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4. Hydrant elevation: (must be within tolerance as shown on detail). B. Secure all necessary permits and notify the City and A/E of intended schedule. C. Have private utilities located by appropriate Utility Company. D. Coordinate excavation schedules and soil disposal with Earthwork Contractor as applicable. E. Charges for utility connections, utility repair and City inspection fees shall be paid for by the Contractor prior to work proceeding. 3.2 PREPARATION A. Verify the following prior to placing any pipes or structures: Inverts of manholes to which connections are to be made; inverts at all utility crossings, including but not limited to water mains, sewers, gas, electric, communications,telephone and all connection points to existing utilities. 1. Notify the A/E of any discrepancies. 3.3 GROUND WATER A. Review the soil boring logs for ground water elevations. Maintain trenches free of ground water during pipe installation. 3.4 EXCAVATION A. General Excavation 1. Excavated material satisfactory for backfill shall be stockpiled in an orderly manner at a distance from the trench edge to prevent slide of cave-ins. The stockpile shall be protected from contamination due to unsatisfactory excavated material. 2. Excavated material not suitable for backfill shall be disposed of offsite or as negotiated with the earthwork subcontractor. Unauthorized over-excavation shall be backfilled with compacted bedding material at no additional cost to the Owner. B. Trench Excavation 1. The trench depth, width, side slopes and benches shall be per OSHA Codes. Local, state and federal codes shall also govern. 2. Trench Subgrade: Once trench excavation is apparently complete for underground sewer and water lines,the testing laboratory representative shall inspect and test the exposed trench subgrade. Acceptability of trench subgrade of appropriate corrective ADDENDUM#1 1607.001 - ORONO ICE ARENA(CP-2) Page 02220-4