EXH1186045478

PCHBPollution Control Hearings Board of the State of Washington

John, thank you for talking with Paul Agid and I on July 12, 2000. On behalf of the Port of Seattle, Associated Earth Sciences, Inc. (AESI) is providing with this letter the information and deliverables we discussed. A. Quarterly Qround Water Level Measurements The attached submittal package A contains the first, second, third, and fourth quarter of ground water level measurements collected from select wells completed in the C1 (Qva) aquifer at Seattle-Tacoma International Airport (STIA). Table 1 through Table zl contains the four quarterly ground water level measurements. Figure 1 through Figure 4 are maps showing the direction of ground water flow in the Qva aquifer in the area of the Aircraft Operations and Maintenance Area (AOMA). The first and second quarter data were previously submitted to Ecology (Mr. Roger Nye) on January 31, 2000. The third and fourth quarter data, which were collected on March 22, 2000 and June 23, 2000, respectively, are contained in this submittal. This submittal conforms to the reporting re-quirements of Agreed Order #97TC-N122, Section IV - Work to be Performed, AR 045478 Mr. John Wieffeld Mr. Roger Nye AESI Project No. Br97016D August 1, 2000 Page 2 Item 2. The reporting requirements under Item 2 can be considered complete based on the data attached to this letter. Quarterly or more frequent water level data were obtained from the following wells, the loca- tions of which are shown on the ground water flow direction maps (Figure 1 through Figure 4). J Well Well Owner…
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