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Page 7 Cabral-McAdams Property October 16,2006 Job No. 1828-092.02 SOIL CHARACTERIZATION SUMMARY OF FIELD ACTIVITIES General A number of sampling events have been performed on the subject property between October of 2005 and September 2006. All sampling activities were overseen by a Professional Geologist from our office. The locations of the soil samples collected are shown on Plates 2 through 6. Shallow soil samples collected during our October 2005 and March 2006 sampling activities were obtained by hand using either a steel trowel or sampling augur. Deeper soil samples obtained during our recent September 2006 sampling activities were collected using a track-rig mounted with direct push (Geoprobe) boring equipment. Prior to our September 2006 sampling activities, we obtained the necessary drilling permit from the SJCEHD. Underground Service Alert also was notified prior to the drilling activities so that on-site underground utilities could be avoided during exploratory activities. Additionally, the DTSC and the SJCEHD were notified at least 48 hours prior to the onset of our recent boring and sampling activities. Following drilling, each boring was backfilled with neat cement grout. Sampling equipment was decontaminated prior to use and between sampling events in order to minimize the chance of cross-contamination. A new pair of disposable nitrile gloves was worn during and between soil sampling activities. Soil samples were collected in either laboratory-provided four-ounce glass jars, six-inch brass sleeves, or poly liners that were sealed with Teflon tape and plastic end caps. All samples were given discrete sample numbers, placed on ice, and transported with chain-of-custody documentation to a State-certified laboratory for analysis. Labeled wooden lath or plastic markers were set at each sampling location so that the locations could be identified at a later date if necessary. October 2005 Soil Sampling Pursuant to the recommendations of our referenced Phase 1 Environmental Site Assessment, our firm collected "screening" soil samples on October 17, 2005. The sampling was performed because the subject property supported a farm residence/headquarters for orchard farming for walnuts, cherries, and peaches for more than 100 years; based on our Phase I investigation it was determined that there was a potential for pesticide contamination (including lead and arsenic from potential past application of lead-arsenate) within the orchard areas and near outbuildings associated with the past and present farming activities. Surface soil "screening" samples were collected directly below the organic/root zone. Eight surface soil samples were collected at locations S1 through S8 within the orchard areas (see Plate 2); four surface soil samples were collected at locations S9 through S12 within Area A (see Plate 3). Four surface soil samples were collected at locations S 13 through S 16 within Area B (see Plate 4). One surface soil sample was collected at location S17 within Area C (see Plate 5).