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t - Y EKMR Consulting• Engineering• Remediation 1220 Avenida Acaso Camarillo,'CA 93012 (805)388-3775� February 25, 1999 FAX(805)388-3577 hilp://www.ensr.com Ms. Evelyn Hubei Public Storage, Inc. P.Q. Box 25050 Glendale, California 91221-5050 Re: 5555-411-200 Subject: Findings of Limited Phase II Investigation Conducted at 1615-1650 West 11' Street in Tracy, California (Public Storage Property No. 99157) Dear Ms. Hubel: ENSR is pleased to submit this preliminary report documenting the findings of ENSR's limited Phase 11 investigation conducted at the above referenced property. The site location is shown on Figure 1 included in Attachment 1. ENSR was contracted to perform the limited Phase 11 investigation based on the findings of ENSR's December 1998 Phase I assessment which identified environmental concerns potentially affecting the subject property due to past onsite business operations. These concerns focused on three former underground storage tanks (USTs) removed from the site in 1993, the presence of floor drains in the two of the buildings (former Auto Body Shop and Service Bay Building), the presence of five hydraulic auto lifts in one of the buildings, and the presence of aboveground chemical storage areas onsite. Analytical results of soil samples collected from 18 borings advanced at the subject property indicate the following: • Subsurface soil in the vicinity of the floor drains, former aboveground storage tank (AST), former drum storage area, and former underground storage tanks (USTs) does not contain chlorinated volatile organic compounds (VOCs) above laboratory detection limits. Subsurface soil in the vicinity of the onsite hydraulic lifts does not contalinpolychlorinated biphenyls (PCBs) above laboratory detection limits. • Total petroleum hydrocarbons (TPH)were detected at concentrations of 59 parts per million (ppm) as gasoline, 1,700 ppm as diesel, and 3,500 ppm as motor oil in a soil sample collected from a boring located adjacent to a hydraulic lift at the south end of the service bay building. • Benzene, toluene, ethylbenzene, and xylenes (BTEX) were detected at levels up to=x.901 ppm in some of the soil samples collected in the vicinity of the onsite-floor drains, hydraulic lifts, former drum storage area and former USTs; however, these con,"ntrations do riot exceed U.S. EPA Region 9 Preliminary Remediation Goals (PRGs) for residential soil:, • Low levels of total lead, chromium, nickel, and zinc were deteptedAn soltsamples OleCtad onsite, however these concentrations do not exceed U.S. EPA Regioh 9 PIRGs'-for '� residential soil.