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Report of Findings—Dairy Waste Removal Page 5 Teixeira—Souza Dairy November 27,2006 WKA No.6504.07 Analytical Results As shown on Table 1, methane was detected in each soil gas sample at concentrations ranging from 1.8 parts per million by volume(ppmv)to 2.5 ppmv. Methane was detected in only two soil samples at a concentration of 0.00068 ppm in sample Pl-S-3 and 0.0025 ppm in sample P2-S-1. These two soil samples were collected near the wastewater ponds. Three of the five groundwater samples collected had detectable levels of methane ranging from 0.00087 ppm to 0.016 ppm. The three groundwater samples were collected from the wastewater ponds. Ammonia was detected in all five water samples at concentrations ranging from 0.98 ppm to 63 ppm. Ammonia was not detected in any of the soil gas or soil samples. No soil gas, soil, or groundwater samples had detectable levels of hydrogen sulfide at or above the laboratory reporting limit. All laboratory results for the soil gas, soil, and groundwater analyses are summarized in Table 1. The complete analytical test results, chain-of-custody, and laboratory quality control data for each sample collected from the Site are included as Appendix A. CONCLUSIONS AND RECOMMENDATIONS All visible manure and waste associated with the operations of the former Teixeira-Souza Dairy encountered during excavation activities in the barn, corrals, animal holding areas, and pond areas have been removed. This conclusion is based on the following: • Observation of waste removal from the barn, corrals,and animal holding areas • Observation of waste and sludge removal from the former wastewater and drainage ponds • Visual confirmation via hand excavation throughout the former dairy • Soil gas, soil, and groundwater data collected in the areas identified as having the largest amounts of waste The waste,manure, sludge, and impacted soil removed from the various areas of the former dairy has been spread on the agricultural area to the west in a manner consistent with the daily operations and maintenance of a dairy. All encountered subsurface debris was removed and segregated from the dairy waste. Although it appears all visible waste has been removed from the main dairy operations area, it is recommended that all earthmoving activities conducted on the Site should be observed for signs of dairy waste, carcasses, or soil impacted by past dairy operations.