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EXHIBIT A <br /> Reservoir Inspection,Cleaning& Repair <br /> Bid#OSD 2021-604 <br /> jetting will not be considered. The brushing shall be vigorous enough to remove biofilm without <br /> damaging the liner or coating or causing excess visible turbidity. <br /> The silt and debris shall be removed from the reservoir bottom and side slopes without damaging <br /> the liner. Dichlorination, disposal of water, filtration and sediment management shall be in <br /> accordance with Part II Section 4.B Dichlorination, Disposal of Water, Filtration and Sediment <br /> Management. <br /> Sediment removal will be considered complete only when an unobstructed view of the storage <br /> bottom is achieved. Sufficient still photos are to be taken to demonstrate compliance. No cross <br /> connection shall exist between the potable water storage facility and the vehicle or tank used to <br /> store or transport the sediments removed from the potable water storage facility. Cross-connection <br /> backflow prevention control measures shall be employed to avoid potential cross-connection <br /> incidences from occurring. <br /> D. Inspection Report and Video <br /> For each facility, the Contractor shall submit two (2) copies of a written inspection report and <br /> provide an inspection video and sufficient still color photographs to provide a reasonable <br /> documentation of the condition of the potable water storage facility interior before and after <br /> completion of work. <br /> 1) Tank and Reservoir Inspection Video and Report. <br /> a) A schematic drawing of the tank and reservoir shall be included with the report. The <br /> reservoir shall be divided into sections and a number system for the sections of the reservoir shall <br /> be designated on the drawing. <br /> b) All tank and reservoir appurtenances shall be described in terms of coating condition and <br /> extent of corrosion. Any mechanical or structural defects visually recognizable shall be identified. <br /> c) The inspection video shall include pertinent portions of the cleaning as it is done to show <br /> amounts and types of material found in the tank or reservoir. This video shall show before and <br /> aftereffects of cleaning with close views to verify adequate brushing of surfaces. Color (4"x6") <br /> still photos at the bases of columns, to be chosen by the City shall be made. Documentation of <br /> findings will be shown on the reservoir drawing. <br /> E. Recommended Repairs <br /> The report shall outline the recommended repairs based on the observations and inspections of the <br /> diving team. Group the recommendations by the following priority system: <br /> Priority 1: Structural integrity related. Failure to make this repair could result in a structural failure <br /> of the tank,reservoir, or appurtenance. <br /> Priority 2: Maintenance related repairs. This type of repair is required, but the necessity to <br /> complete it is not urgent. <br /> Priority 3: Maintenance suggestions. This type of recommendation is not required. <br /> 5. DISPOSAL OF SEDIMENTS <br /> The Contractor shall be responsible for the legal disposal of all tank and reservoir sediment. The <br /> Contractor shall inform the City in writing that all sediment has been legally disposed of. <br /> Contractor shall implement measures to dewater the removed reservoir sediment to contain greater <br /> Rate Sheet <br /> Page 5 of 8 <br />