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<br /> <br />City of Redwood City Page 40 <br />Sewer System Management Plan, March 2018 Element V <br />V -2 Standards for Inspection and Testing of New Facilities <br />As specified in Volume 1, Section 02730, sanitary sewer force mains and laterals require testing <br />for tightness after the completion of backfilling but prior to the request for final inspection. <br />Sewer lines are tested for water tightness, obstructions, and vertical deflection. Hydrostatic or air <br />pressure methods, depending on the specific project, can be used to ensure test requirements are <br />satisfied. Cases with geotechnical considerations require an internal television inspection to <br />detect defects. <br />V -3 References <br />• City of Redwood City Engineering Standards Volumes 1 to 3 <br /> <br />6.2.A. - Page 48