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~' `wW containers or discarded items by this method many years ago. To detect these types of underground artifacts is difficult even with the use of ground penetrating radar or other types of non-intrusive, subsurface analyses. The land surface did not exhibit visual indicators for buried containers such as surfacing of product residue, soil mounding or soil depressions. It is unlikely that anything would have been buried on the property since the soil is so hard and tight. It is usually only atter a contaminant plume has impacted a domestic well that buried pesticide containers, or other types of contaminants are discovered. If buried items are discovered during underground utility placement, etc., the Environmental Health Department must be contacted immediately. An electrical transformer exists directly in front of the Diamond residence. The transformer appears to be relatively new (installed within the last ten years), and therefore, unlikely to contain PCBs. If the transformer were to leak or explode, it would be the responsibility of the transformer owner to mitigate environmental contamination. Nitrogen, phosphorous and potassium (NPK) fertilizers should not be a concern since the property has never been in agricultural production. PUBLIC ENVIRONMENTAL RECORD/DATA SOURCES In my opinion, the two most significant environmental concerns to the subject property are the sewage ponds at the Migrant Farm Labor Camp and the closed Harney Lane Landfill. As stated, odor does not appear to be a significant issue with these sewage ponds. If odors were detectable, it would most likely be in the summer months with a westerly breeze, and not in the winter months. Additionally, the ponds may be somewhat protected by the "soil cap" of the Harney Lane Landfill, so that if the wind blew in a westerly direction, there would be some measure of protection. Potential groundwater contamination under the subject property from the ponds is also unlikely, provided the ponds are not too deep. This is due to the clay content of the underlying soil and the groundwater directional flow. The Harney Land Landfill is under groundwater and surface water monitoring by the County of San Joaquin. Found in Appendix "D," is the most recent annual report (1999) provided by the Environillental Health Department, regarding the groundwater and surface water monitoring at the Landfill site. From the data and information presented, it appears that there has been no impact from landfill leachate to the underlying groundwater over the past 12 years. Additionally, the groundwater data presented in Table 1 of the County Monitoring Results, indicates the static groundwater to be approximately 120 feet below grade. The 1999 Lincs of Equal Depth to Grow7dwater map show the groundwater depth to be 135 feet. Figure 2 of the County Monitoring Report illustrates the groundwater flow to be in a southerly and easterly direction, which would be cross gradient and downgradient to the subject property. The California Code of Regulations (CCR)requires certain specifications for buildings built within 1,000 feet of a landfill. These Regulations are promulgated in Title 27, §21190. Item (g) Page -3- Chesney Consulting