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Phase II Environmental Site Assessment Manteca Multimodal Station Project,Southeast of Moffat Boulevard and Main Street Manteca,California put into a chilled cooler pending delivery to a State-Accredited analytical laboratory. Remaining soil was used for lithologic description and soil sample field screening. A RAE Systems ToxiRAE photoionization detector(PID) was used at the site for personnel protection and soil sample screening. A PID reading was taken for each soil sample collected. The ToxiRAE was calibrated to display concentration in units equivalent to parts per million by volume (ppmv). Following collection of the soil samples, a grab groundwater sample was collected in each of the five borings. The probe was advanced to 25 feet below grade then the probe was retracted and nnr �-� a ir. - /_u ieci ui blank FVC C casing (lop) and a feetr of screened r v C casing (ouiiom) were placed in each borehole. A one-half-inch diameter clean, stainless-steel bailer was then inserted into the PVC casing and used to extract a groundwater sample from each borehole. Samples were collected in six 40-milliliter VOA vials containing hydrochloric acid as a preservative and one 1- liter glass amber container. The containers were provided by the analytical laboratory. Care was taken to ensure no headspace or bubbles were created within the VOA vials. The samples were labeled,placed in a sealable plastic bag and stored in a cooler with blue ice pending delivery to a State-certified analytical laboratory. Sampling equipment was decontaminated between uses by washing with a non-phosphate solution followed by a potable water rinse. Upon completion of the sampling program, all borings were backfilled with cement slurry using a tremmie method. The surface was restored to its natural condition. Historic Railroad Spurs On December 7, 2010, 16 soil borings (RB 1 through RB 16)were completed in the locations where the railroad spurs were formerly located on the subject property(Figure 2). The 16 soil borings were advanced to a maximum depth of 2 feet below grade using the Geoprobe direct push rig operated by Vironex. Soil samples were obtained from depths of 0.5 and 2 feet below grade. Soil samples were collected using the Geoprobe sampling system as described above. As the probe was advanced, soil was driven into a 1-inch diameter, 2-foot long acetate sleeve. After being driven to the necessary depth,the rods were removed from the borehole. The acetate sleeve containing the soil was then removed from the probe. The 6-inch long sections were cut and sealed with Teflon tape and end caps. The samples were labeled and laced in a chilled cooler pending delivery to a State-certified analytical laboratory. Remaining soil was used for lithologic description and soil sample field screening. Stained Pavement On December 7, 2010, one soil boring(RB 17) was completed in the location where stained asphalt was observed to the southeast of the former onsite building as depicted on Figure 2. The soil boring was advanced to a maximum depth of 5 feet below grade using the Geoprobe direct push rig operated by Vironex. Soil samples were obtained from depths of l and 5 feet below grade. Soil samples collected using the Geoprobe sampling system as described above. A 6- inch long section was cut from the desired sampling depth and the sample was sealed with Teflon tape and end caps. The samples were labeled and placed in a chilled cooler pending delivery to a State-certified analytical laboratory. Remaining soil was used for lithologic description and soil sample field screening. r Rincon Consultants 8