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L ' ti TUSO PROPERTY Page 5 �- WKA No. 5475.02 June 2, 2003 1~ i Regarding EMFs on the subject property,we have also included below the Conclusions section out ` of the Executive Summary from the May 1999 National Institutes of Health(NIH),National Institute of Environmental Health Sciences(NIEHS) "Report on Health Effects from Exposure to LPowerline Frequency EMFs, "NIH Publication No. 99-4493. We did not review the entire report nor was the body of the report readily available for us to review. The NIH report is excerpted as follows: ` "The scientific evidence suggesting that EMF exposures pose any health risk is weak. The strongest evidence for health effects comes from associations observed in human populations with two forms of cancer: childhood leukemia and chronic lymphocytic leukemia in occupationally exposed adults. While the support from individual studies is L weak, the epidemiological studies demonstrate for some methods of measuring exposure, a fairly consistent pattern of a small, increased risk with increasing exposure that is L somewhat weaker for chronic lymphocytic leukemia than for childhood leukemia. In contrast, the mechanistic studies and the animal toxicology literature fail to demonstrate any consistent pattern across studies although sporadic findings of biological effects (including increased cancers in animals)have been reported. No indication of increased L leukemias in experimental animals has been observed. "The lack of connection between the human data and experimental data(animal and mechanistic) severely complicates the interpretation of these results. The human data are L in the `right' species, are tied to `real-life' exposures and show some consistency that is difficult to ignore. This assessment is tempered by the observation that given the weak ` magnitude of these increased risks, some other factor or common source of error could explain these findings. However, no consistent explanation other than exposure to EMFs has been identified. i "Epidemiological studies have serious limitations in their ability to demonstrate a cause �- and effect relationship whereas laboratory studies,by design, can clearly show that cause and effect are possible. Virtually all of the laboratory evidence in animals and humans and most of the mechanistic work done in cells fail to support a causal relationship between exposure to EMFs at environmental levels and changes in biological function or V WALLACE•KUHL &ASSOCIATES INC.