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If the fly ash is determined to be non-hazardous based upon the above sampling and analysis it will be directed to a landfill to be direct buried, alternative daily cover, liquid stabilization or other approved beneficial reuse in accordance with Section 6.0. 10.3 BOTTOM ASH Based on the historical analysis results, a sampling and analysis protocol has been established for the bottom ash in accordance with EPA's Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (SW-846). A basic overview of the sample collection and compositing methodology for the bottom ash is provided below: 1. One week per quarter, DTES will sample four (4) bottom ash trucks. DTES will collect discrete aliquots on a randomized basis from a bucket during the transfer of bottom ash to the trucks prior to transportation off-site. 2. DTES will analyze at least four (4) of the eight (8) samples from each truck for TTLC and STLC for lead, arsenic and copper, and for pH. One of the four samples will also be analyzed for CAM 17 metals and TCLP for lead. 3. Using these test results, DTES will calculate a two-tailed 80% confidence interval for each truck for lead, arsenic, copper, and pH. 4. If the 80% confidence interval is below the regulatory thresholds for lead, arsenic, copper and pH, DTES can consider the bottom ash to be non-hazardous with respect to those constituents, and can use the test results to help establish generator knowledge for its bottom ash. 5. DTES will need to sample and test more regularly if its fuel source changes as described in this paragraph. Due to inventory fluctuations and inaccuracies of bulk material handling, DTES monitors its average fuel blends of agricultural, urban, and in-forest biomass on an "as-delivered" green ton basis rather than an "as- consumed" basis. For each week that bottom ash is sampled, DTES will determine its fuel blend based upon the prior month's deliveries of each: urban, agricultural, and in-forest biomass (this month is the "base month"). If in a future month, urban biomass' share of DTES' fuel source increases by 10 percentage points or more relative to the base month, DTES must again sample, test, and evaluate its bottom ash in the manner described in 1-4 above to help establish appropriate generator knowledge. 6. If, applying the procedures described in 1-5 above, DTES finds the bottom ash sampled and tested was non-hazardous for four consecutive quarters, it can move to an annual sampling and testing process based on generator knowledge obtained from previously analyzed samples results obtained pursuant to the procedures outlined herein for bottom ash. In this case, one week per year, DTES would sample four (4) bottom ash trucks. DTES would collect discrete aliquots on a randomized basis from a bucket during the transfer of bottom ash to the trucks prior to transportation off-site to create eight (8) individual samples for each truck. DTES would then follow the procedures described in 2-5 above to characterize its ash and help establish generator knowledge. 7. If an exceedance in a calculated 80% confidence interval occurs, DTES will treat 25