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GIEIM Careen Environmental Management March 19, 2019 Mr.William Bir VP/Environmental Risk Officer, Sr. 2527 Camino Ramon San Ramon, CA 94583 SUBJECT: Work Plan for a Phase II Environmental Site Assessment A&A Standard Transmission 1211 South Wilson Way Stockton, California 95205 Dear Mr. Bir, Green Environmental Management (GEN) is pleased to present this work plan for a Phase II Environmental Site Assessment (ESA) at the above referenced property(the subject property, Figure 1). Site Description and Background G M recently conducted a Phase I ESA of the subject property which is composed of one San Joaquin County tax lot totaling 0.46 acres located within an area of Stockton, California of predominant commercial land use. The subject property is developed with a one-story metal Quonset building with concrete block fa4ade, two-story wood frame addition (with wood siding and concrete floor), and covered work area with concrete floor at western end of Quonset building.The buildings were constructed in 1947 and total 2,000 square feet.The site is occupied by A&A Standard Transmission for commercial use. According to information reviewed, the subject property consisted of vacant land from at least 1917 until at least 1937 when a small building or shed was present on the northeastern corner of the subject property. This small building/shed was present through at least 1940. In 1947 the currently existing commercial building was constructed on the subject property and was occupied by an auto parts business through at least the mid-1980s; the remainder of the subject property was used as an auto wrecking yard through at least the mid-1980s. Since the mid-1980s the currently existing commercial building has been occupied by A&A Standard Transmission. A recognized environmental condition (REC) refers to the presence or likely presence of any hazardous substances or petroleum products in, on, or at a property: due to release to the environment; under conditions indicative of a release to the environment; or under conditions that pose a material threat of a future release to the environment.The following RECs were identified during the Phase I ESA: • The long-term use of the subject property for an auto parts, auto wrecking yard, and transmission shop with storage of hazardous materials and generation of hazardous waste has been identified as a REC. Please note, although an investigation was conducted on the subject property in 2000, GIEIM noted several concerns with the sampling and analysis program and previously identified RECs from the 2000 Phase I remain RECs for the subject property. • A 3-stage oil water separator (OWS) was observed outside the building near its' northwestern corner. According to Mr. Ken Schamber, Manager for A&A Transmission, the OWS is connected to Corporate Office I P.O. Box 2212 1 Sisters, OR 97759 1 tel: SSS.277.S307 I efax:866.480.3823 1 www.green-em.com