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EXHIBIT A Reservoir Inspection,Cleaning& Repair Bid#OSD 2021-604 than 50%solids by volume and no free-standing liquid prior to disposal. Contractor shall secure a representative reservoir sediment sample and shall have the necessary soil characterization analysis and soil profile (i.e. CAM 17 metals, at a minimum) performed by an independent laboratory, in order to certify the sediment as a hazardous or non-hazardous waste per Title 22 CCR 66260.Contractor shall submit a certified lab analysis from an independent laboratory to the City before removal of sediment is scheduled. No sediment shall be removed from the site until the City has reviewed the lab report. Sampling and sample management of reservoir sediment for analysis and testing shall be in accord with the sampling planning, methodology and equipment, and the sample processing, documentation and custody procedures specified in chapter nine of "Test Methods of Evaluating Solid Waste, Physical/Chemical Methods," SW-846, 3rd edition, U.S.Environmental Protection Agency, 1986.As a minimum,every lab report shall state the name of the storage facility from which the sample came, the name(s) of the test(s) performed and the classification of the sediment during testing as dried sediment or wet sediment for analysis. The laboratory results of any Total Threshold Limit Concentration (TTLC) test for metals shall be given in units of mg/kg. If the sample has the potential to exceed Soluble Threshold Limits Concentration(STLC) levels based on the sample characteristics and the TTLC test results, then the contractor shall have STLC analyses performed in accordance with the Waste Extraction Test (WET) procedures given in Appendix II of Section 66261.24 of the California Code of Regulations.The City reserves the right to have such collected sediment samples also analyzed by laboratory. Disposal of reservoir sediment through the reservoir drain to a watercourse, flood control channel or creek shall not be allowed. Should the reservoir solids be deemed a hazardous waste, the Contractor shall dispose of such waste according to Federal, State,and local laws.The Contractor shall notify the City of any such hazardous waste and the City reserves the right to a copy of any tests conducted on the waste and, at the City cost,to perform additional tests or examine the waste,prior to removal and disposal of such waste. Hazardous waste shall be disposed of by a licensed hazardous waste transporter using uniform hazardous waste manifest forms and taken to a proper disposal site. The Contractor shall coordinate with the City to dispose of the hazardous waste under an EPA Generator Number. A copy of all the manifests shall be provided to the City.Solids that are determined to be a hazardous waste,that are required to be disposed of as hazardous waste, shall be paid for through a bi-lateral amendment to this Agreement. 6. INSPECTIONS Some parts of the project may be subject to inspection by at least the following agencies: A. City of Pleasanton Environmental Services B. State Water Quality Control Board, Division of Drinking Water C. Bay Area Regional Water Quality Control Board D. City Of Pleasanton Public Works Inspection E. Livermore Pleasanton Fire Department 7. COMMENCEMENT AND COMPLETION OF WORK Work shall begin on a mutually agreed upon date. It is agreed by the Contractor that time is of the essence. The length of time that each tank and reservoir will be out of service for cleaning and Rate Sheet Page 6 of 8