(23)AGRMT 020607 Houston & Harris PCS, Inc. - executed agreement

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1.1.4 The work to be performed shall be located throughout the City and confined to the pipe sizes listed in Attachment A. Drawings and Return Plans listed are available for viewing during regular business hours (M -Th, 7:30 AM to 6:00 PM) at: Water & Wastewater Administration, located at: 160 South 10th St. Colton, CA 92324 2.0 General Sewer Cleaning Requirements 2.1.1 Intent: The intent of sewer line cleaning is to remove foreign materials from the sewer line sections such at that a reduction in grit depth of 5% or less of the sewer diameter is accomplished, as measured throughout the sewer section. 2.1.2 Sewer Cleaning: The designated sewer line sections and appurtenant structures shall be cleaned using hydraulically propelled vactors, high velocity jet, or mechanically powered equipment or manual cleaning methods. The equipment and method(s) selected shall be based on the conditions of the lines observed during the Contractor's site visit. 2.1.3 Cleaning Precautions: Under no circumstances will sewer cleaning operations be allowed during rain events. During sewer cleaning operations, satisfactory precautions shall be taken in the use of sewer cleaning equipment. When hydraulically propelled cleaning tools or tools which retard the flow in the sewer lie are used, precautions shall be taken to insure that the water pressure created does not damage or cause flooding of public or private property, or private lateral connections being served by the sewer. 2.1.4 Material Removal: All sludge, dirt, sand, bricks, rocks, concrete, grease, roots, paper, cans, bottles, plastic and other solid (including manhole covers and steel plates) or semisolid material resulting from cleaning operations hall be removed at the downstream manhole of the section being cleaned. Flushing material from manhole section to manholes section, which could result in line blockages, or accumulations of sand in wet wells, shall not be permitted. UNDER NO CIRCUMSTANCES is the Contractor allowed to store debris on-site overnight. All debris must be drained free of liquids prior to being transported off- site. 2.2.1 Sewer Cleaning and Debris Removal Equipment: The Contractor may elect to use any of the following sewer cleaning machines and equipment individually or in combination, to accomplish the project tasks. The Successful Contractor may elect to use other machines and equipment not listed herein, provided that the use of such equipment does not cause pipe damage and/or private and public property flooding. Notification and justification of alternate equipment selection must be provided to the City representative prior to using sewer cleaning and debris removal equipment not listed herein. RVPUB\NGS\529338 13