Opening of Quotes - Laurel Woods Drainage Improvements Proj No. 121-007 - Selge Construction Co., Inc.

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Version 2/14/2020 Page - 12 Public Works Quote replace both the frame and grate as part of the casting replacement, including incidental work to remove and replace the existing frame. 6. Payment will be made under: Pay Item Pay Unit Casting, Replace EACH XXX. STORM DRAIN CLEANING AND INSPECTION A. Prevailing Specifications: None B. Additions: 1. The work shall include all labor, tools, equipment, and related items as may be required for the complete cleaning or cleaning and internal inspection and television monitoring (including bypass plumbing, drain dewatering and associated work) of the storm drain and inlet/manhole structures and removing and disposing of all deposits cleaned from the drains. 2. All storm drains shall be thoroughly cleaned and allow for unrestricted inspection by closed circuit television. All storm drains will be cleared prior to television inspection. If the television inspection shows drains were improperly cleaned, the Engineer will direct the appropriate cleaning and re- cleaning. Re-cleaning shall be done at no additional cost. 3. Equipment a. Cleaning shall be accomplished by means of water jetting or other approved methods. The equipment utilized shall be capable of removing all sand, dirt, rocks and other debris, including potential roots, from the drain line to allow internal inspection of all internal surfaces. The equipment used shall suit the conditions and size of the sewer to be cleaned. The equipment used shall include the use of a movable dam type and be constructed in such a way that a portion of the dam may be collapsed at any time during the cleaning operation to protect against flooding of the sewer. The movable dam shall be equal in diameter to the pipe being cleaned and shall provide a flexible scraper around the outer periphery to insure removal of grease. If sewer cleaning balls or other equipment, which cannot be collapsed, is used, special precautions to prevent flooding of the sewers and public or private property shall be taken. b. The camera and recording equipment shall be specifically designed for continuous viewing and recording of detailed images of the interior wall of pipes and transitions of the specified size ranges. The equipment shall include sufficient lighting to view the entire periphery of the pipe. The equipment shall have appropriate attachments to maintain a position in the center of the pipe and an electronic counter to continuously record the location of the equipment in the pipe. A copy of the video inspection shall be submitted to the Owner. c. Cleaning shall be performed within the seventy-two (72) hour period immediately before closed circuit television inspection. 4. Sewer Cleaning Operation a. The Contractor shall thoroughly clean all sewer segments designated for cleaning in the project plans. Cleaning includes the removal of all debris in the sewer including, but not limited to, items such as silt, sand, tree roots, rocks, bricks, pieces of pipe, buildups on the pipe walls, grit, sludge, and slime and all other foreign material in the sewer pipe. A clean pipe segment is generally defined as a pipe that has approximately 95 percent of the debris removed for the full length of pipe. The Contractor shall provide adequate documentation that the pipe segments have been thoroughly cleaned. The Owner will make the final decision as to whether a pipe has been thoroughly cleaned according to these Specifications. b. The Contractor shall clean the sewers by moving debris within the pipe from the upstream manhole to downstream manhole in a given sewer segment. Debris from the cleaning operation shall be collected at the downstream manhole with the use of the vacuum unit on the cleaning equipment. The Contractor shall not pass debris to the next downstream sewer segment. Under no circumstances shall the Contractor allow debris to flow downstream into the receiving channel at the outlet of the sewer system. c. If cleaning of an entire section of sewer from manhole to manhole cannot be successfully performed from upstream manhole; the equipment shall be set up on the opposing end and the sewer shall be cleaned again from this “reverse set-up” configuration. 5. Water.