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Page 3 September 10,2012 DBruscaProjecl No. 114-001.01 1813 Moffat Boulevard Property,Manteca EXPLORATORY DRILLING AND SOIL SAMPLING Permitting As required, we processed a boring permit application with the San Joaquin County Environmental Health Department. The application process included preparation and submittal of a Workplan, a Health and Safety Plan, a permit application form, a Licensed Contractors Declaration form, and a Master File Record form. The approved County Drilling Permit is attached. Geophysical Survey and Utility Clearance Prior to the drilling and sampling activities, we directed a geophysical survey to evaluate the subsurface configurations of the sump, septic disposal system, and associated piping. At the time of the survey, we removed the metal cover plates on the sump and we observed the conditions interior to the sump. The geophysical results and our direct observations indicate the two-chambered concrete-lined subsurface sump has an inlet pipe, but no outlet pipe. A shallow depth of water was present within the sump at the time of our field work; no sheen or chemical odors were noted. Additionally, the concrete sump structure appeared intact with no significant cracks. The location of piping associated with septic system (as identified during the geophysical survey) is shown on Plate 3. The septic tank appears to be connected to a sewer line that extends to the building;the tank appears to discharge to a leach line situated to the southeast. Geophysical methods were used to clear the boring locations of underground utilities. We also contacted Underground Service Alert to further clear the borings. Drilling and Sampling Exploratory drilling and sampling was performed on August 26, 2013; the locations of the five borings are shown on the attached Plate 3. Borings B1 and B3 were performed very near the sump, and Boring B2 was performed very near the septic tank; each of these borings was extended to a depth of 15 feet. Borings B4 and B5 were performed very near the septic system leach line; both of these borings extended to a depth of ten feet. Drilling and sampling activities were overseen by a Professional Geologist from our office. The five exploratory borings were advanced with truck-mounted direct push (Geoprobe) equipment. Beneath the asphaltic-concrete pavements and underlying aggregate base materials, the borings encountered relatively uniform alluvial deposits comprised predominantly of brown silty fine sands. Below depths of about eight feet most of the borings engaged brown-grey fine to medium sands extending to the maximum depth of exploration. Subsurface water was not encountered in the borings. No visual or olfactory evidence of contamination was observed in the materials encountered in the borings. Soil samples were retrieved from the borings at five-foot intervals for laboratory testing. The soil samples were collected in accord with standard environmental protocol and each sample was assigned a unique sample number. The samples were collected in plastic sleeves, sealed with