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J. H. KLEINFELDER & ASSOCIATES <br /> File No. 5-2515-1 <br /> December 19, 1985 <br /> Page Two <br /> Monday, October 21, 1985 <br /> By prior arrangement, the security guard at the Marley facility notified <br /> the Writer that heavy rain was falling at approximately 1:30 A.M. A total of 19 <br /> were obtained at five different locations between the period of 2:20 A.M. to 5 <br /> A.M. During this period the intensity of the rain varied with a total rainfall <br /> of .56 inches according to San Joaquin County Flood Control Department. <br /> Starting at approximately 4:30 A.M., the two pumps failed to operate causing the <br /> drain system to back-up and flood most of the north yard. <br /> Sunday Morning, November 11, 1985 <br /> Due to previous committments, the Writer could not arrive at the site until <br /> the storm had dropped all of the approximately .80 inches that fell. Five <br /> samples were obtained approximately 15 minutes after the storm ended. There was <br /> still runoff flowing into the drains. At Location 2, the runoff was very <br /> colored and appeared to contain the last "drippings" of the treated wood. The <br /> Writer also observed changes in the material storage at locations 1 and 2. <br /> Monday :Morning, November 25, 1985 <br /> This was the first rainfall to occur during normal working hours. The <br /> storm actually began on Sunday and was relatively heavy at times. On Monday the <br /> rainfall was relatively sporatic. A technician from our firm obtained two sets <br /> of samples (12 total) during one of the brief rainfall periods. The total rain- <br /> fall for Sunday and Monday amounted to 1:11 inches. <br /> For your information, we have included a summary of rainfall recorded by <br /> San Joaquin Public Works Department located five miles from the Marley Cooling <br /> Tower facility. As previously indicated however, it is possible that variations <br /> in rainfall could occur between their yard and the Marley facility. <br /> If you have any questions or need additional information, please contact <br /> US. <br /> Respectfully submitted, <br /> J. H. KLEINFELDER & ASSOCIATES <br /> Ron Heinzen, C. E. <br /> RTH:rIs <br /> Attachments <br /> cc: Mr. Hal Daley/Mr. George Hopkins <br />