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VIRR 07 '90 15:13 R.H.L. c I.AMENTo 9166464679 P.3i29 <br /> Page 2 <br /> March 8, 1990 <br /> Addendum <br /> RHL 6981 <br /> Yes, the LS 3 probe will be used in the water filled reservoirs <br /> and the piping sumps. We had labeled the probe in the sumps as a <br /> sensor, in an effort to avoid "specing" equipment on non-material <br /> listing sheets. So, if at a later date we decide to change <br /> manufacturers we need only change one sheet. <br /> There is no LS 30 probe being used at this site, but yes it does <br /> exist. You will find cut sheets for the LS 30, Ronan X76LVC and <br /> the JT-H2 enclosed. The UL number is also available for your use <br /> in those cut sheets. <br /> No, we are not using Total Containment for piping areas < 311 . <br /> Again, because it is a standard sheet the product is listed, but <br /> an effort was made to address installation procedures for A.O. <br /> Smith piping only. <br /> As listed on our materials sheet, the brand of Flex piping being <br /> used is either Titeflex or Teleflex. In cases were secondary <br /> containment is being used and not shown the products used will be <br /> Total Containment "Flex Jacket" or Teleflex "Secondary <br /> . Containment Boot". No UL numbers have been found for any <br /> secondary containment boots. <br /> No monitoring wells are being installed at this site, although <br /> monitoring stations will be, they do not descend further than the <br /> pea gravel base, they do descend to the lowest point of the tank <br /> excavation with a minimum of 111 pea gravel below. <br /> Upon approval from your agency, written notification for our <br /> files would be greatly appreciated. If you have further <br /> questions regarding the site or require additional information, <br /> please call Rick McCauley or Charles Mackarness at (916) 646- <br /> 4003 . <br /> Sincerely, <br /> ROBERT H. LEE & ASSOCIATES, INC. <br /> Rick McCauley <br /> Project Designer <br /> rbm <br /> ROBERT H. LEE 6 ASSOCIATES <br />