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EXHIBIT A BID #OSD 2021-604 sanitary evaluation. The evaluations will locate and identify sanitary deficiencies and compliance with present American Water Works Association (AWWA), Occupational Safety and Health Administration (OSHA), and other applicable California standards. The underwater diving portion of the tank inspection will implement AWWA, OSHA, and other applicable California standards. Prior to entering the water,the diver will be wearing a volcanized rubber dry suit that is in proper working condition. All materials, personnel and equipment coming in contact with potable water inside the tank or reservoir will be thoroughly disinfected in a 2ooppm solution of chlorine and water. Our dive crew will have a three-way hard wired communication at all times. Cathodic protection reference probe inside tanks will be removed and replaced as applicable. 4.3. TANK CLEANING Our team will remove dirt, debris, and sediment accumulated on the facility floors,walls,and columns without creating any visible turbidity. Cleaning will combine adequate brushing of surfaces in addition to removing material from the reservoirs by water suction. If piles of sand, debris, failed coating, rust scale or rocks are discovered in the reservoir, it may not be possible to use Catalyst's standard vacuuming practices. This will be considered a changed condition and a City representative will be contacted before Catalyst proceeds with completing the cleaning. Catalyst Diving will provide the City with real time HD videos illustrating the cleaning of each reservoir and a detailed narration of what was seen by the diver during the inspection and cleaning. 4.4. SEDIMENT DISPOSAL Catalyst Diving will collect a sediment sample for analysis by an independent laboratory and will submit the certified lab analysis to the City prior to scheduling the removal of sediment. Catalyst Diving will legally dispose of all tank and reservoir sediment and inform the City in writing that all sediment has been legally disposed of. The removal pricing is based on all material removed from the tanks being classified as non- hazardous or non-regulated substances allowing disposal at the local landfill. Should sediment be determined to be hazardous waste or a regulated substance, an amendment to this Agreement will be approved by a City representative prior to removal of solids. 4.5. DELIVERABLES Catalyst Diving will provide the City two (2) hard copies and one electronic copy ofthe written inspection report for each reservoir. Each report will contain color photographs of the tank's internal and external components. The photographs will provide additional documentation of the tank's condition. Included in the report will be a schematic drawing of the tank and reservoir that has a numerical system for the sections of the reservoir and documentation of amounts and types of material found. In addition, the report will provide recommended repairs based on the inspection results and will be grouped by priority as identified in the Proposal. Our team will provide the City an inspection video with live narration to provide reasonable documentation of the condition of the potable water storage facility interior before and after completion of work. CATALYST 7 ti DIVING