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5.0 CONCLUSIONS & RECOMMENDATIONS In the area where borings were drilled, the site is underlain by relatively fine-grained, low-permeability silt and clay in the upper 30 feet. A few thin layers of fine-grained sand are interbedded. A strong hydrocarbon odor was detected in borings B1 through B3 to depths of 25 feet during drilling. A slight hydrocarbon odor was detected at depths of 30 feet, and no hydrocarbon odor was detected at 35 feet. A slight hydrocarbon odor was detected in boring B4 at depths of 20 and 25 feet. The laboratory analysis indicates that contamination at the site is greatest at depths between 15 and 25 feet. Only slight hydrocarbon contamination is present at depths greater than 25 feet. Since the water sample from the domestic well did not indicate the presence of any contaminants, and no soil contamination was encountered at a depth of 30 feet, it appears that groundwater has not been impacted. Therefore, a groundwater investigation is not warranted at this time. It is our understanding that the PHS/EHD will perform a leaching potential analysis of the site to assess the potential impact to groundwater of the contaminated soil. If the analysis indicates the soil contamination may pose a threat to groundwater, we recommend that an excavator be utilized to remove the contaminated soil at the site. The volume of impacted soil is probably about 600 cubic yards. If the analysis indicates the soil contamination is not a potential threat to groundwater, then removal or remediation of the soil may not be necessary. 6.0 LIMITATIONS Our professional services were performed using that degree of care and skill ordinarily exercised by environmental consultants practicing in this or similar localities. The findings were mainly based on analytical results provided by an independent laboratory. No other warranty, expressed or implied, is made as to the professional recommendations contained in this report. 4