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Rodney Estrada Y+ <br /> October 4, 2007 <br /> Page 2 <br /> 2. A sheet with bacteriological and chemical monitoring requirements for non-transient, <br /> non-community water systems was provided for reference. The sheet includes test frequencies and <br /> other information for the following types of parameters: secondary (aesthetics), inorganic chemicals, <br /> nitrate,nitrite,volatile organic compounds, synthetic organic compounds, radiological, lead and <br /> copper, and bacteriological. <br /> 3. The KMC water supply wells must have grout annular seals that extend 200 feet below the ground <br /> surface. <br /> 4. To-avoid arsenic monitoring and possible arsenic treatment requirements, SJCEHD staff suggested <br /> the construction of two separate non-community water systems. Under this scenario, each water <br /> system would include a well, well pump, chlorination system, storage tank, and distribution piping, <br /> and the total number of employees within the facilities served by each water system would be limited <br /> to 24. If one of the water systems provided water to 25 or more of the same people (i.e. employees) <br /> more than 180 days per year,then that system would be a non-transient, non-community water <br /> system and arsenic monitoring and possible arsenic treatment requirements would apply. <br /> If any of the statements above are incorrect,please let us know. <br /> Sincerely, <br /> Nolte Associates, Inc. <br /> Dave Richard,PE David Zensius, PE <br /> Principal Project Manager <br /> cc: Adrienne Ellsaesser, SJCEHD <br /> Gurdip Kelley <br /> Steve Welge,Fillner Construction, Inc. <br /> Howard Seligman, Seligman & Willett, Inc. <br /> 3 <br /> I <br /> NOLTE ASSOCIATES, INC. nantb015600\correspondence\sjcehd[tr 100407.doe <br />