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f Page 2. Update — Level I Environmental Site Assessment Raney Reference No 794-002 ' November 13, 1995 The westerly half of the property is presently planted in sugar beets which we understand will be harvested this spring The easterly half of the property is vacant and has been disced and rolled An irrigation well is situated on the southerly margin of the site (see Plate 1) ' We did not observe any environmentally suspect conditions during our recent site visit Update Discussion Aerial photographs dating back to 1937 were reviewed during our earlier assessment of the larger property The photos revealed no usage of the subject site other than farming No structures or suspect features were evident on the subject property, nor have our research and observations identified any environmental concerns on the larger property within one-half mile of the subject site Our recent update research for the larger site revealed no environmentally adverse changes within the general site vicinity There are a number of contamination conditions within the surrounding area, but available information do not indicate that any are of sufficient magnitude or proximity to be a significant threat to the environmental integrity of the subject property Relevant sites within the general vicinity are discussed in both our referenced 1991 report and recent update Sod and Groundwater Testing A permitted boring was drilled to a depth of 52 feet by a licensed C57 drilling contractor on October 30, 1995 ' Soil samples were obtained from the boring at approximate 15-foot depth intervals None of the soil samples revealed any evidence of contamination Screening of the samples with a hand-held photoiomzation detector revealed no volatile substances Three of the soil samples were selected for chemical testing The selected samples were obtained at the following depths one foot (EBI-11), 12 feet (EB1-21), and 44 feet (EBI-41) The samples have been tested for the following (1) TPH as diesel by the modified EPA 8015 method; (2) TTH as gasoline and volatile aromatic (BTEX) compounds by the EPA 8020 procedure, and, (3) chlorinated priority ' pollutant pesticides by the EPA 8020 method A groundwater sample also was collected and analyzed m accordance with the above procedures Groundwater samples were obtained with a teflon bailer which was lowered down a temporary two-inch diameter casing The slotted portion of the casing was temporarily set within the depth interval between 50 and 55 feet by first creating an additional three-foot deep core hole at the bottom of the boring by advancing a 2'h-inch-diameter split-spoon sampler. Prior to sample collection,the groundwater depth measured 52 feet The laboratory data are appended The data indicate that neither gasoline, diesel, BTEX nor chlorinated pesticides were detested in any of the soil or groundwater samples The only laboratory funding is a trace o apparent motor oil reported for the water sample at a concentration of 2 8 parts per-million It has been our experience that removal of all detectable oil material from drilling and sampling equipment is extremely difficult and the measured concentration probably is not representative of true groundwater conditions Also, it has been ' our experience that non-specific long-chain hydrocarbons at the end of the modified 8015 laboratory chromatograph run are not uncommon; these are often attributed to matrix interference from endogenous organic . materials The reported hydrocarbon may be attributed to one or both of the above factors. There is no indication that the subject property would be a source, particularly since soil samples tested "clean". Also, off- site sources would not be a valid concern, inasmuch as petroleum oils are of low mobility and would be preceded ossa