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1 itro en f g ,p osp orous an potassium erti izers s ou not e a concern since t e property has not been in agricultural production for decades. PUBLIC ENVIRONMENTAL RECORD/DATA SOURCES Static groundwater is found approximately 62 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 is flat, but may be toward the southwest. A groundwater depth of 62 feet can be considered a medium-to-deep groundwater elevation which can be impacted from serious point source releases and to a much lesser degree from agrichemicals such as pesticides and herbicides, or nitrogen in the form of nitrates. The degree of impact from agrichemicals can be mitigated when there are intervening layers of clay soil down to the static water table depth. Three years ago, a Site Assessment Report was produced for an adjacent property (See MS-99- 01). County, State and Federal environmental records were obtained from VISTA Environmental Information Solutions for sites which may have affected the subject property. The databases accessed in 1999 are found in the Appendix; however, since VISTA is no longer in business, an update from them was not possible. Only one site was found to have the potential to impact the subject site and is currently undergoing remediation, according to personal communication with Mr. Harlin Knoll of the Environmental Health Department. This site is the Marley Cooling Tower Company, located at 150 Sinclair Avenue (Map ID #4), which is northeast of the subject property. The Marley Cooling Tower Company has had significant releases of hazardous materials, namely Chromium-6. Currently, the groundwater gradient of the upper aquifers is to the southeast; therefore, the subject property is cross gradient to the upper contaminant plume. However, deeper aquifer contamination from the Marley facility may have occurred under the subject property, and is still the obligation of the Marley Company to remediate. Potential environmental impact to the subject site from other past, present or future facilities within a one-half mile radius is unknown at this time. i The USDA Soil Map shows the subject property consists of a Galt-Urban land complex (4162) ' soil type. Typically, this soil type is 50% Galt clay and 35%urban land. The surface layer is a dark gray clay and clay loam, about 25 inches thick. The subsoil, to a depth of 64 inches, can be a brown clay loam with a cemented hardpan. Since the subject property has not been in agricultural production, an evaluation of environ- mental fate data for agrichemical residues as a nonpoint source of potential contamination was not done. The science of pesticide residues in soil, air, surface water and groundwater is extremely complex and variable. Environmental models that attempt to predict pesticide behavior and transport in the environment are beyond the scope of this investigation. Since Parcel 1 is proposed to be developed back into a SFR, pesticides with long half-lives that may have been applied decades ago,primarily DDT, may be of an extremely slight concern. It is a possibility that DDT was applied to the subject property in the 1940s, 1950s and possibly Page -3- Chesney Consuftirg