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FThelandace did not exhibit 'sual indicators for tamers suchas surfacing of ue, soil mounding, or soil depressions. Nor, did y of the observed -tal stress. It is usually only after a contami plume has imps ed a domestic wellsticide containers are discovered. If buried mems are_uncovered_ ng-any potenorr cc procedures, etc., the Environmental Health Department must be contacted immediately. s' A total three electrical transformers ere observed on the property, as illustrated in Photogt hic Plate R. A tl� isformers appear to be newer and probably do not contain polychloride btp tenyls (PCBs), although "no PCBs"decal was noted on the outside. If these transformers were to leak or explode and contaminate the subject property, it would be the responsibility of the transformer owner(PG&E)to mitigate any environmental contamination. Soil nitrogen content under dairy corrals has always been a concern for EHD. Consequently, two soil samples were obtained from two feet below existing grade for comparison purposes. The first sample was retrieved from the old corral area to the east of the buildings and is labeled"dairy soil." The second sample was retrieved southwest of the milk barn in the almond orchard, and is labeled"non-dairy soil." A shovel was used to obtain both samples,which were subsequently , taken to A& L Labs in Modesto for analysis under the attached Chain of Custody. The analytical tests r Uinler te-nitrogen results. Nitrogen concentrations in the dairy soil are approximat 2Tr in the non-d�agir s►il. The soluble and sodium salts were also higher in th an in the dairy soil. However, the phosphorous concentrations are much higher in the dairy soil than the non-dairy soil. A&L laboratory was contacted to ensure that the test results were accurate and that the test results had not been transposed. A second test verified the nitrate-nitrogen tests results for both soil samples. §3.4, § 3.5 It is a possibility minute volumes of agrichemicals sprayed on surrounding properties may drift onto the subject property, and vice versa. The site can be considered in the predominant downgradient windshed to other agricultural production acreage. In addition,the San Joaquin County Mosquito Abatement District may spray for mosquitoes on and around the property. From previous Nitrate Loading and Soil Suitability Studies done south of the property, it is known there are high concentrations of nitrate in the underlying drinking water aquifers. This can be attributed to the concentrated agricultural production in this region that has occurred over several decades. Static groundwater depths and elevation are illustrated on the Lines of Equal Depth and Elevation to Groundwater maps produced by San Joaquin County. The groundwater depth is approximately 55 feet below grade. This groundwater depth can be considered a medium groundwater depth. Groundwater directional flow is to the north. i Page-5- Chesney Consulting