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River City Petroleum -3
<br /> 15 April 2014
<br />Connell Motor Lift Truck
<br />2211 North Wilson Way
<br />Stockton, San Joaquin County
<br />Table 2A maximum RCP groundwater results are in micrograms per Liter (ug/L).
<br />Date TPHg TPHd TPHss B T E X MTBE 1,2-DCA EDB TBA
<br />12-01 78,700 NA NA 8,310 9,440 1,050 8,360 NA NA NA NA
<br />12-02 89,500 NA NA 11,100 11,800 1,200 8,880 NA 2,200 180 ND
<br />7-03 30,000 NA NA <0.5 <0.5 200 <0.5 <0.5 27 <1.0 <5.0
<br />12-03 77,000 NA NA 16,000 12,000 1,200 9,800 <50 2,600 300 63
<br />3-05 84,000 NA NA 15,000 10,000 980 7,400 <17 940 110 100
<br />12-05 59,000 36,000 NA 17,000 11,000 1,400 10,100 <1 340 <0.5 <10
<br />3-06 75,000 NA NA 19,000 14,000 2,500 14,300 <1 670 <0.5 <10
<br />11-06 1,800,000 190,000 NA 26,000 11,000 1,500 8,100 <1 140 19 <0.5
<br />12-06 38,000 18,000 NA 6.9 2 45 156 <1 3.7 <0.5 <10
<br />2-07 84,000 62,000 NA 8,000 9,600 2,000 8,400 <1 460 190 <10
<br />3-08 33,000 NA NA ti 2,100 12 380 1,410 <1 110 <10 <10
<br />3-09 13,000 <50 NA 820 32 170 1,06 <1 230 <0.5 <10
<br />3-10 8,700 7,200 NA 6.4 18 7.8 98 <1 270 <0.5 <10
<br />1-11 4,500 NA NA 2,300 25 14 580 NA 500 NA NA
<br />2-11 5,300 NA NA 2,300 58 82 691 NA 91 NA NA
<br />3-11 9,400 NA NA 4,300 120 200 1,900 NA1''' 120 <0.5 <10
<br />2-12 940 NA NA 120 3.7 5.6 18.7 <1 75' <0.5 <10
<br />TPHg= total petroleum hydrocarbons as gasoline TPHd= as diesel TPHss = as Stoddard Solvent B = benzene T = toluene
<br />E = ethylbenzene X = xylenes MTBE = methyl tert butyl ether Pb = total lead EDB = ethylene dibromide
<br />TBA = tert butyl alcohol NA = not analyzed ND non-detect
<br />Connell Motor Lift Truck (CMLT)
<br />In November 1998, a Phase 1 investigation for a potential property transfer identified areas of potential
<br />concern at CMLT. The areas of potential concern included: 1) the waste oil AGTs located outside of the
<br />building, 2) oil stains on the concrete slab near the ACT, and 3) two surface depressions (suspected dry
<br />wells) in soil adjacent to the building. In February 1999, a Phase 2 investigation utilizing cone
<br />penetrometer testing (CPT) advanced borings P1 through P18, and a July 1999 Preliminary Site
<br />Investigation advanced CPTs P20 through P29 and boring M1. The investigations identified high levels
<br />of total petroleum hydrocarbons as gasoline (TPHg) identified as Stoddard solvent (Stoddard), in soil and
<br />groundwater. Stoddard was historically used for cleaning vehicle parts. Methanol, benzene,
<br />ethylbenzene, toluene, xylenes, tetrachloroethene (PCE), and 1, 2-dichloroethene (1, 2-DCE) were also
<br />detected in soil. Due to the presence of solvents found at this Site, Central Valley Regional Water
<br />Quality Control Board (Regional Board) staff opened a Site Cleanup case on 19 May 2000.
<br />Table 1B Maximum CMLT soil investigations concentrations given in milligrams per kilogram (mg/kg)
<br />from pre-remediation investigations with no post remediation confirmation soil sampling.
<br />Date TPHg TPHd TPHss B T E X MTBE 1,2-DCA PCE
<br />2-99' 1,500 6,000 11,000b <0.03 1.1 1.5 13 <2 NA 68
<br />7-99' 6,300 NA 8,000 <0.1 2.8 6.6 44 NA NA NA
<br />12/00 2,300 2,000 2,300 <0.005< 0.36 2.4 2.6 <5 <5 <0.005
<br />4-02 12,000 4,700 8,700 <10,000 11,000 <10,000 62,000 <10,000 <10,000 NA
<br />3-031 ND ND NA 7 9 12 41 29_ 28 NA
<br />TPHg= total petroleum hydrocarbons as gasoline TPHd= as diesel TPHss = as Stoddard Solvent- benzene I - toluene
<br />E = ethylbenzene X = xylenes MTBE = methyl tert butyl ether 1,2-DCA = 1, 2-dichloroethane PCE = tetrachloroethene
<br />NA = not analyzed ND non-detect 1 = Cone Penetrometer Borings
<br />Additional CPT borings P30 to P33 were advanced in December 2000. Maximum groundwater
<br />petroleum hydrocarbons results are also shown in Table 2 below. Seven CMLT monitoring wells (MW-1
<br />through MW-7) were installed in January 2001. Nine CMLT monitoring wells (MW-8 through MW-16),
<br />eleven remediation wells (EW-1, VW-1A through VW-5A, VW-1B through VW-5B) and two observation
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