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Contractor’s methodology is thoroughly described and demonstrated to remove biofilm. Hydraulic jetting will not be considered. The brushing shall be vigorous enough to remove biofilm without damaging the liner or coating or causing excess visible turbidity. The silt and debris shall be removed from the reservoir bottom and side slopes without damaging the liner. Dichlorination, disposal of water, filtration and sediment management shall be in accordance with Part II Section 4.B Dichlorination, Disposal of Water, Filtration and Sediment Management. Sediment removal will be considered complete only when an unobstructed view of the storage bottom is achieved. Sufficient still photos are to be taken to demonstrate compliance. No cross connection shall exist between the potable water storage facility and the vehicle or tank used to store or transport the sediments removed from the potable water storage facility. Cross-connection backflow prevention control measures shall be employed to avoid potential cross-connection incidences from occurring. D. Inspection Report and Video For each facility, the Contractor shall submit two (2) copies of a written inspection report and provide an inspection video and sufficient still color photographs to provide a reasonable documentation of the condition of the potable water storage facility interior before and after completion of work. 1) Tank and Reservoir Inspection Video and Report. a) A schematic drawing of the tank and reservoir shall be included with the report. The reservoir shall be divided into sections and a number system for the sections of the reservoir shall be designated on the drawing. b) All tank and reservoir appurtenances shall be described in terms of coating condition and extent of corrosion. Any mechanical or structural defects visually recognizable shall be identified. c) The inspection video shall include pertinent portions of the cleaning as it is done to show amounts and types of material found in the tank or reservoir. This video shall show before and aftereffects of cleaning with close views to verify adequate brushing of surfaces. Color (4”x6”) still photos at the bases of columns, to be chosen by the City shall be made. Documentation of findings will be shown on the reservoir drawing. E. Recommended Repairs The report shall outline the recommended repairs based on the observations and inspections of the diving team. Group the recommendations by the following priority system: Priority 1: Structural integrity related. Failure to make this repair could result in a structural failure of the tank, reservoir, or appurtenance. Priority 2: Maintenance related repairs. This type of repair is required, but the necessity to complete it is not urgent. Priority 3: Maintenance suggestions. This type of recommendation is not required. DISPOSAL OF SEDIMENTS The Contractor shall be responsible for the legal disposal of all tank and reservoir sediment. The Contractor shall inform the City in writing that all sediment has been legally disposed of. EXHIBIT A DocuSign Envelope ID: 127FE52A-CAEF-4879-B943-68F42EA8FF9D