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October 2004 <br />-25- <br />043 -2170 <br />4.2.9 Temperature Monitoring <br />• <br />• <br />Golder monitored ambient air temperatures using a HOBO Pro Series data logging thermometer. <br />Temperatures were measured every 30 minutes. The lowest and highest daily temperatures are <br />summarized in Table 2. <br />During placement of SF, when the ambient air temperature was less than 32 ° F for longer than 1 hour <br />in the previous 24 hours, Golder was required to monitor the fill temperatures at depths of 3 inches <br />and 6 inches, at a frequency of 6 tests per acre, and calculate the average fill temperature from the <br />lower temperature of the 3 -inch and 6 -inch tests: SF was placed throughout the spring and summer of <br />2003 and 2004 when temperatures were greater than 32 °F; therefore, no SF temperature monitoring <br />occurred during construction of the Phase We OSA. <br />9:04% 21790 Cert-QA .OUVo-IWC"2LMO4OO.l348ICcnnrvcaa Golder Associates <br />