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FFAnelectrnical wards p o e an , burial o containers is extremely unlikely. t is usually on y minant plume has impacted a domestic well that buried pesticide containers are If buried items are discovered during underground utility placement, etc. on the new nvironmental Health Department must be contacted immediately. transformer is found on a pole at the north end of the property, adjacent to French Camp Road. It appears to be relatively new so it probably does not contain polychloride biphenyl (PCB) laden oil. Nitrogen, phosphorous and potassium (NPK) fertilizers should not be of a concern since the property has not been in agricultural production for decades. From previous nitrate loading and soil suitability studies done to the southeast of the property, it is known that there can be higher concentrations of nitrate in the underlying drinking water aquifers. However, it appears that nitrate levels over the Maximum Contaminant Level (MCL)have been the result of localized conditions, such as fertilizer spills. PUBLIC ENVIRONMENTAL RECORD/DATA SOURCES Static groundwater is found approximately 28 feet under the property as illustrated on the attached 1999 Lines of Equal Depth to Groundwater map. From the 1999 Lines of Equal Elevation of Groundwater, the groundwater directional flow appears to be toward the northeast. A groundwater depth of 28 feet can be considered a relatively shallow groundwater elevation which can be impacted from serious point source releases and to a lesser degree from agrichemicals such as pesticides and herbicides, or nitrates. This degree of impact from agrichemicals is particularly mitigated when there are intervening layers of clay or hardpan soil down to the static water table depth. It is known that a hardpan layer exists in this locale. Based upon personal communication with Doug Wilson of the Environmental Health Department, there are no records of above ground, or under ground (AST/UST) storage tanks at the subject property address. This is also illustrated on the attached GeoTracker Site Map. A Leaking Underground Fuel Tank(LUFT) site is shown at the Gaging Station, 4000 feet north of the property. This Gaging Station can be considered downgradient from the property. Potential environmental impacts to the property from past,present or future facilities within a one mile radius is unknown at this time. Two sources of information which attempt to document and define on-site and surrounding past land use were also used. The first is the use of aerial photographs. Aerial photographs of the subject area from 1970 through 1977 found on USDA Soil Maps reveal the property to be the same as it currently is. The aerial photos show that there are no buildings on the south three-fourths of the property. The USDA Soil Map shows the northeast comer of the property consists of a Veritas fine sandy loam (#266) soil type and the remaining acreage is a Honcut sandy loam (#175). Typically,these soil types are well drained with moderate permeability,which is a beneficial soil attribute for septic effluent management. There are sufficient soil "fines" to impede percolation so treatment of effluent can-* occur before reaching the water table,unlike what would be encountered with a very sandy soil. Page -3- Chesney Consulting