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all of his or her work and remove the over spray from the bait blocks before his or her work will be approved. Bait block replacement shall be accomplished by first removing all of the old bait from the manhole and then installing a new bait block in the manner prescribed in METHOD OF BAIT INSTALLATION of these specifications (including the attachment of a new "Caution" tag painted red on its back side). The nail and tie -wire used to secure the old block must be of the prescribed type as set out in the Materials and Equipment section of these specifications and if still in good condition and firmly anchored between the sidewall and manhole cover rim seat may be left in place and reused. All old bait, unusable tie -wires, and nails must be removed from the manhole and disposed of by the Contractor at an authorized site. I. KeV and Color Code to be Used on Record of Work: + (black) p + O (black and red) O (red) / (red) (black) (black) T (black) V (black) N (black) Bait inspection Inspection and bait replacement Reinstallation including nail, wire, tag, and bait block Rat activity Flooded manhole Paved over Tight cover Vehicle over Not located IV. Task 2: Sewer Cockroach Control Program The work consists of opening 143 specifically selected sanitary sewer manholes in the City of Redwood City during the months of September, December, March, and June, in order to inspect and apply insecticide to the vertical wall. Contractor shall service manholes in the presence of SMCMVCD's Vector Control Specialist or his/her representative. A. Materials and Equipment: All tools, labor, materials and equipment necessary to carry out this program are to be provided by the Contractor. No alteration or substitution of materials is permissible without the express written authority of City or SMCMVCD. REV: 01-23-20 EI