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Larry's Auto - 2 - 25 October 2017 308 North Grant Street Stockton, San Joaquin County Table 2 - Metals Results Sample Sb (mg/kg) As (mg/kg) Ba (mg/kg) Be (mg/kg) Cd (mg/kg) Cr (mg/kg) Co (mg/kg) Cu (mg/kg) Pb (mg/kg) 86-5 <0.5 5.9 280 0.64 <0.25 43 15 32 8.2 B6-10 <0.5 4.7 150 0.59 <0.25 48 15 33 7.4 B7-5 <0.5 7.7 410 0.66 <0.25 45 15 33 7.9 B7-10 <0.5 6.2 350 0.69 0.49 53 32 43 8.0 B8-5 0.88 8.2 190 0.52 <0.25 33 11 27 56 B8-10 <0.5 3.9 180 0.51 <0.25 42 12 25 30 89-5 <0.5 6.8 190 <0.5 <0.25 39 16 27 24_ 7.3 B9-10 <0.5 4.8 180 0.54 <0.25 43 13 26 Sample Hg (mg/kg) Mo (mg/kg) Ni (mg/kg) Se (mg/kg) Ag (mg/kg) TI (mg/kg) V (mg/kg) Zn (mg/kg) B6-5 <0.050 0.55 37 <0.5 <0.5 <0.5 78 55 86-10 <0.050 <0.5 37 , <0.5 <0.5 <0.5 56 59 87-5 <0.050 0.61 36 <0.5 <0.5 <0.5 90 57 B7-10 <0.050 1.1 85 <0.5 <0.5 <0.5 67 66 B8-5 0.071 0.66 29 0.82 <0.5 <0.5 57 98 B8-10 <0.050 <0.5 41 <0.5 <0.5 <0.5 51 48 89-5 <0.050 <0.5 39 <0.5 <0.5 <0.5 62 54 89-10 <0.050 <0.5 45 <0.5 <0.5 <0.5 55 47 Sb=antimony; As=rarsenic; Ba=barium; Be=beryllium; Cd=cadmium; Cr=chromium; Co=cobalt; Cu=copper; Pb=lead, Hg=mercury; Mo=molybdenum; Ni-nickel; Se=selenium; Avsilver; Ti=thallium; V=vanadium; Zn=zinc mg/kg=milligrams per kilogram In the Site Assessment Work Plan dated 5 May 2017, AGE proposed to advance three (3) additional borings around Site monitoring well MW-5, inside the adjacent Stanley Electric Motor Company Inc. (Stanley) building to the east. However, access to the Stanley building was not granted to AGE and thus these borings were not advanced. Based on the soil results, AGE recommends that no further assessment is necessary in the northwest portion of the Site property. Central Valley Water Board staff has the following comments: As the reported constituent concentrations in soil are less than the thresholds established in Table 1 of the State Water Resources Control Board's Low Threat Underground Storage Tank Case Closure Policy (LTCP), Direct Contact and Outdoor Air Exposure criteria are met. As little to no petroleum hydrocarbons, and low levels of metals, were detected in soil in the vicinity of former Tanks A & D, Central Valley Water Board staff concur that no further soil investigation is needed in the northwestern portion of the Site property. Larry's Auto, at 308 N. Grant Street, occupies the western portion the Site property, San Joaquin County Assessor's Parcel Number (APN) 139-320-13. The Stanley building, with address 825 Miner Avenue, actually occupies the eastern portion of this parcel. As such, the legal authority to grant access to the Stanley building lies with