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® APPENDIX D <br /> STATISTICAL ANALYSIS METHODS FOR THE <br /> FRENCH CAMP LANDFILL <br /> Concentration limits for the French Camp Landfill have been established as the Water Quality <br /> Protection Standards (WQPS)for naturally occurring water quality constituents. These <br /> concentration limits are defined for detection monitoring wells at the French Camp Landfill in <br /> the Monitoring and Reporting Program for the site (R5-2007-0046). <br /> NON-STATISTICAL DATA ANALYSIS <br /> For those substances that have no natural background such as VOCs,pesticides, and other <br /> anthropogenic compounds,GLA performed the non-statistical "VOC water" data analysis required <br /> by Resolution No. 93-62 of the State Water Resources Control Board, titled"Policy for <br /> Regulation of Discharges of Municipal Solid Waste"for VOCs detected less than 10 percent of <br /> the time in background samples. Under the VOC water analysis, a measurably significant <br /> indication of release occurs in a given sample when: two or more VOCs exceed their respective <br /> Method Detection Limits(MDLs); or one or more VOCs equals or exceeds its respective <br /> practical quantitation limit(PQL). <br /> TREND ANALYSIS <br /> ® For well-analyte pairs that exceeded the respective WQPS,a temporal trend analysis was <br /> conducted to assess if statistically significant increasing or decreasing temporal trends present in <br /> the data. Mann-Kendall/Sen's Slope trend analyses were performed by GLA using Sanitas <br /> statistical software,and water quality data collected for the previous five years of sampling <br /> events to evaluate for the presence of statistically significant increasing trends. <br /> 0 C:\2013-002ffCAppendixDStatsdoc D-1 Geo-Logic Associates <br />