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Mr. John Muniz, Jr. Country Market Site Investigation Work Plan Addendum December 6, 2013 Page 2 2.0 Pre-Field Activities Prior to initiation of field activities, Antea Group will prepare a Health and Safety Plan (HASP) in accordance with Title 8, Section 5192 of the California Cade of Regulations. Field personnel will perform a daily review of the HASP containing a list of emergency contacts as well as a hospital route map to the nearest emergency facility. Antea Group will obtain the necessary boring permits from the SJCEHD. Antea Group will contact Underground Service Alert (USA) and contract a private utility locator at least 72 hours priorto the initiation of field activities to identify underground utilities in the vicinity of the proposed borings. Antea Group will notify the appropriate site contacts and the SJCEHD a prp oximately five (5) days prior to commencing field activities 3.0 Soil Sampling During boring advancement, Antea Group will collect continuous soil samples for lithologic logging. An Antea Group geologist will log the lithology in accordance with the Unified Soil Classification System and will screen the soil samples for volatile organic vapors at approximately 1 foot intervals using a photoicnization detector (PID). We will record PID readings on the respective boring logs. Antea Group will submit soil samples for laboratory analysis as follows: • At depths of 10 and 20 feet bgs from boring SB-1; • At depths of 5 and 10 feet bgs in boring SB-2; Additional samples may be retained for laboratory analyses if elevated PID readings are detected, or soil staining is observed. Antea Group will label the soil samples retained for laboratory analysis with a unique sample name and place the sample in an ice-cooled chest following chain-of-custody documentation. Antea Group will submit the soil samples to a National Environmental Laboratory Accreditation Program (NELAP) certified laboratory for the following analyses: • Gasoline Range Organics (GRO), using Environmental Protection Agency (EPA) Test Method 8260 • Benzene, toluene, ethylbenzene, xylenes (collectively BTEX) and methyl tertiary-butyl ether (MTBE) by EPA Test Method 82608; and • Total lead by EPA Method 6010. 4.0 Groundwater Sampling A groundwater sample will be collected from the on-site domestic water well located approximately 100-feet east of the former USTs. The sample will be collected from a faucet located inside the building or exterior faucet, prior to the water running through any filtration devices. The amount of water present in the well's pressure tank will be calculated as well as the approximate flow rate from the faucets used to purge water from the system prior to collecting the sample. A minimum of one pressure tank volume will be purged before collecting the groundwater sample from the faucet located closest to the well. Groundwater within the well will be purged prior to sampling in order to collect a representative groundwater sample. Antea Group will submit the groundwater sample to a NELAP certified laboratory forthe following analyses: • GRO using EPA Test Method 8260 • BTEX and MTBE by EPA Test. Method 8260B; and 5.0 Disposal of Investigation Derived Waste The licensed driller will place soil cuttings and wastewater generated during investigation activities into Department of Transportation (DOT) approved 55-gallon drums, and seal, and label them in accordance with DOT protocols for non- hazardous waste. Antea Group will temporarily store the drums on-site, pending receipt of analytical data. Upon receipt of the results, Antea Group's waste management contractor will transport and dispose of the investigation-derived waste at an appropriate facility.