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81110 Environmental 888-ODICENV 888-634-2368 Environmental Consulting&Real Estate Due Diligence Fax 213-380-0505 3255 Wilshire Blvd. Suite 1510 Los Angeles, CA 90010 June 18,2013 Andrew Johnson 3060 Calle Bonita Santa Ynez,CA 93460 RE:Work Plan for Soil Sampling,26250 N.Midsection Street,Thornton,CA Odic is pleased to present this work plan for a subsurface environmental assessment to investigate the soil conditions at the subject property. This is a preliminary investigation to assess shallow subsurface conditions, thus this investigation is intended for screening purposes only. If contamination is found exceeding regulatory action levels, horizontal and vertical delineation may be necessary to quantify the extent of contamination via additional investigation. Background Odic conducted a Phase I ESA in June 2013. The one-story vacant industrial building was previously occupied by a manufacturer of wood chips/sawdust. The building has equipment, supplies, and hazardous materials left behind by the former occupant. A large wood chipper/grinder was observed inside the building. Small quantities of oil, waste oil, hydraulic fluid, transmission fluid, and lacquer thinner were observed in the building and on the northeast exterior of the building. Several empty portable cans for gasoline were observed inside the building. Staining was observed on both the concrete and soil located near the material storage areas. The stained area outside the building is approximately 15 square feet in area and may be from releases of motor oil/waste oil. The staining is not de minimis and is identified as an environmental concern for the potential impact to underlying soil. The subject property was developed as early as 1952 with a small building (use undetermined). By 1963, the current building had been constructed, identified as a cannery and then a lumber yard. City directory listings identified Universal Forest Products, Western Division, as the occupant in 2004-2005. From 2005 until 2012, it was occupied by a manufacturer of wood chips/sawdust. A.J. Ranch, Inc. acquired the property in late 2004 from Universal Forest Products,Western Division.It appears that the manufacturer of wood chips/sawdust was an occupant after Universal Forest Products(property profile information, former owner). According to the property owner, the site utilizes a septic system with the leach lines discharging deep in the ground. Although not known to have occurred from past operations, the possible discharge or release of petroleum hydrocarbon based substances to the septic system is a Recognized Environmental Condition. The depth to groundwater is shallow and may be less than 15 feet below ground surface in the area of the subject property. Based on the visual surface staining of soil and the risk of a release of hazardous waste from the septic tank and leach field, a subsurface investigation is recommended. Hydro eoloev The subject property is situated within the Great Valley Geomorphic Province of California, a large, elongate, northwest trending,asymmetric structural trough. The Great Valley Province has been filled to its present elevation with thick sequences of sediment ranging in age from Jurassic to Recent,creating a nearly horizontal alluvial plain, extending from the Tehachapi Mountains in the south to the Klamath Mountains in the north. The western and eastern boundaries of this province are comprised of the California Coast Range and the Sierra Nevada, respectively. Rocks composing the basement complex of the province have not been completely defined but are believed to be metamorphic and igneous in origin. The northern and The force Lw€wviroH.weH.tat nue DLLLgew C vnrn o