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7 ) r7As noted on the attached Soil Survey map, the subject property is composed of the Timor loamy sand soil type (4254). Effluent percolation is expected to be faster in this type of a sandy soil than in a clay loam soil. The soil profile to the depth of groundwater is assumed to consist of sandy soils. This soil type does not attenuate possible impact from adverse constituents such as nitrate. Groundwater directional flow appears to be very slowly toward the west, as denoted on the attached lines of equal elevation groundwater map. As referenced, the farming operations are conducted by Mr. Allen Sipma and his father. Agrichemical applications are done by themselves. Most agrichemical mixing is on-site on a concrete pad. Mr. Sipma farms other ranches and occasionally agrichemicals are mixed at these ranches. He is knowledgeable and experienced with applications; therefore, there is assurance that material is applied correctly and accurately to its intended target without (or minimal) drift. There is a very slight possibility of minute volumes of pesticide drift originating from the surrounding acreage during aerial and/or ground applications. All used agrichemical containers that are accepted by the dealer, are returned to the dealer. The subject property was surveyed for evidence which is indicative of surface and/or subsurface contamination: There are no transformers on the property. No evidence of solid waste disposal was observed. The site was inspected for environmental concerns oinating� om discolored, disturbed/subsided soils, stressed vegetation/almond trees or unusual/noxious odors. None of these environmental indicators were observed. There are no hazardous materials or agri- chemicals stored on-site in the barn, nor in the small shed on Mr. Brown's property. There was no indication or observations of spills, or other items associated with hazardous materials. Mr. Kelley changes the oil in his car and truck on-site. In this area, there was no indication of spillage. ,'A important concern associated with the environmental assessment of agricultural properties is the issue of buried pesticide containers or discarded items. It was an occasional practice to dispose of containers by this method many years ago. To detect these types of underground jartifacts is difficult even with the use of ground penetrating radar or other types of non-intrusive, subsurface analyses. It is usually only after a contaminant plume has impacted a domestic well 4r that buried pesticide containers are usually discovered. The static groundwater table is found at 12.4 feet under the property as determined in the old pump house well. This well is 65 feet deep and has no pump, so it is not operational. The two operational domestic wells were tested for nitrate for the Soil Suitability Study. The Kelley's well had a nitrate concentration of 12 ppm and Mr. Brown's well , which is 100 feet deeper than the Kelley's well, had a nitrate concentration of 7 ppm. Although the subj roperty has been in agricultural production for several years, an evaluation of environment fat ata for agrichemical residues as a nonpoint source of potential contamination was performed on the agrichemicals used in the pest management of the almonds. The information was obtained from Mr. Allen Sipma. The science of pesticide residues in soil, air, surface water and groundwater is extremely complex and variable. Environmental models which attempt to predict pesticide behavior and transport in the environment are beyond the 3 Va.CIey Ag Research