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<br /> Manteca Multimodal Station Project
<br /> Southeast of Moffat Boulevard and Main Street,Manteca,California
<br /> Boring Depth Antimony I Arsenic I Barium Beryllium Cadmium Chromium Cobalt Copper I Lead I Mercury J Molybdenum Nickel Selenium Silver Thallium Vanadium I Zinc
<br /> Number I (Feet) Results in milligrams per kilogram(mg/kg)
<br /> Soil Boring Samples(Former Railroad Spurs)
<br /> RB1 0.5 NO<3 5.68 117 0.548 0.581 30 9.39 17 7.35 ND<0.14 NO<1 25.1 ND<l NO<0.5 NO<1 42 69.9
<br /> 2 - - - - - - -
<br /> R82 0.5 NO<3 5.16 98.3 0.519 0.726 28.1 9.53 12.4 4.09 ND<0.14 NO<1 24.1 NO<1 NO<0.5 NO<1 39 39.5
<br /> RB3 0.5 NO<3 2.39 74.9 NO<0.5 0.853 14.5 5.97 9.61 10.6 ND<0.14 NO<1 14.4 1.07 NO<1 NO<1 28.2 84.6
<br /> 86.5
<br /> RB4 0.5 NO<3 2.18 82.5 NO<0.5 0.603 12.3 5.22 10.3 (11.5 STLC) NO<0.14 NO<1 13.3 NO<1 NO<1 NO<1 24.4 110
<br /> (0.051 TCLP)
<br /> 2 -- -- - -- -- - -- -- 2.38 - -- - -- - --
<br /> RB5 0.5 NO<3 1.15 47.9 NO<1 NO<1 7.03 3.71 5.51 6.02 NO<0.14 NO<1 5.31 NO<1 NO<1 NO<1 21.7 23.8
<br /> RB6 D.5 NO<3 1.75 51.7 NO<0.5 NO<0.5 10.1 4.96 6.77 3.69 NO<0.14 NO<1 10 1.07 NO<1 NO<1 32.3 23.9
<br /> RB7 0.5 NO<3 1.72 50.1 NO<0.5 NO<0.5 8.93 4.3 6.53 5.91 NO<0.14 NO<1 5.82 NO<1 NO<0.5 NO<1 26.5 25.7
<br /> 2 - - - - - - - - - -
<br /> RB8 0.5 NO<3 1.49 52.3 NO<0.5 NO<0.5 8.49 4.53 5.16 3.95 NO<0.14 NO<1 6.53 1.01 ND<0.5 ND<l 26.7 23.1
<br /> 2 -- - - I - -- -- - - - - -- - -- -- - -- -
<br /> RB9 0.5 NO<3 3.73 86.5 NO<1 NO<1 10.4 5.61 7.96 3.71 NO<0.14 NO<1 7.64 NO<1 NO<1 NO<1 31.1 28.1
<br /> 2 - - - - - - -
<br /> RB10 0.5 NO<3 1.91 47.8 NO<1 NO<1 7.92 3.98 15 11.6 NO<0.14 ND<1 5.76 NO<1 NO<7 NO<1 27.1 34.8
<br /> RB11 0.5 NO<3 3.69 94.6 NO<0.5 NO<0.5 13.2 5.9 10.8 16.2 NO<0.14 NO<1 11.1 NO<1 NO<1 NO<1 30.4 44.8
<br /> 2 - -
<br /> R812 0.5 NO<3 3.53 47.9 NO<0.5 NO<0.5 10.9 4.93 14.8 21.2 NO<0.14 NO<1 .12 1.45 NO<1 NO<1 27.6 107
<br /> 2 -- - - I -- - - -- - - - -- - - I --
<br /> RB13 0.5 NO<3 2.86 80.4 NO<0.5 NO<0.5 14.9 5.35 13.1 26.6 NO<0.14 NO<1 9.26 NO<1 NO<1 NO<1 28.8 60.4
<br /> 2 - -- - -- -- -- - - -- -- - - - -- -
<br /> G8.1
<br /> RB14 0.5 NO<3 3.97 47.7 NO<0.5 0.696 10.3 5.18 11.2 (1.41 STLC) NO<0.14 NO<1 9.05 NO<1 NO<1 NO<1 32.2 601
<br /> 2 -- -- - -- -- -- -- -- 1.54 -- -- - -- -- -- -- -
<br /> RB15 0.5 NO<3 2.62 207 NO<0.5 ND<0.5 12.6 5.5 9.81 5.76 NO<0.14 NO<1 11.5 NO<1 NO<1 NO<1 32.1 29.3
<br /> 2 -- - -- -- - - -- -- -- - -- -- -- --
<br /> RB16 0.5 NO<3 4.21 99.5 NO<0.5 NO<0.5 14 7.2 13.5 15.4 NO<0.14 NO<1 15.9 ND<1 ND<l NO<1 31.1 46.6
<br /> 2 -- -- - -- -- - - - -- - - -- -- --
<br /> Soil Boring Sample(Stained Pavement)
<br /> RB17 1 NO<3 1.79 58 NO<0.5 NO<0.5 8.37 4.92 13.8 1.85 NO<0.14 NO<1 7.46 NO<1 NO<0.5 NO<1 24.2 49.3
<br /> Background 0.15- 0.6- 133- 0.25- 0.05- 23- 2.7- 9.1- 0.05- 0.1- 9.0- 0.015- 0.17- 39- 88-
<br /> Concentration 1.95 11 1,400 2.70 1.70 1,579 46.9 96.4 12'497'1 0.90 9.6 509 0.430 0.10- 8.3 1.1 288 236
<br /> CHHSL-Soil(R) 30 0.07 5,200 150 1.7 100,000 660 3,000 80 16 380 1,600 360 360 5 530 23,000
<br /> CHHSL-Soil(C/1) 380 0.24 63,000 1,700 7.5 100,000 3,200 38,000 320 180 4,800 16,D00 4,8D0 4,800 63 6,700 100,000
<br /> SL-Soil(R) 31 0.39 15,000 160 70 120,000 NE 3,100 400 23 390 1,600 390 390 5.1 550 23,000
<br /> SL-Soil(C/I) 4101.6 190,000 2,000 810 1,500,000 NE 41,000 NE 310 5,100 20,000 5,100 5,100 66 7,200 31,000
<br /> TTLC 500 500 10,000 75 100 2,500 8,000 2,500 1,000 20 3,500 2,000 100 500 700 2,400 5,000
<br /> STLC 15 5 100 0.8 1.0 560 1 80 25 5 0.2 350 20 1.0 5 7 24 250
<br /> Soil samples obtained on December 7,2010
<br /> --=not analyzed
<br /> ND=not detected at or above the laboratory detection limit
<br /> Background Concentration=Kearney,Background Concentrations of Trace and Major Elements in California Soils,University of California,1996
<br /> CHHSL=California Human Health Screening Levels(CaVEPA-Use of California Human Health Screening Levels in Evaluation of Contaminated Properties,January 20D5)
<br /> SL=Regional Screening Levels for Chemical Contaminants at Superfund Sites,July 7,2008
<br /> (R)=Residential
<br /> (CII)=Commercial/Industrial
<br /> TTLC=Total Threshold Limit Concentration
<br /> STLC=Soluble Threshold Limit Concentration(in milligrams per liter[mg/L])
<br /> TCLP=Toxicity Characteristics Leaching Procedure(in mg/L)
<br /> Concentration in parenthesis indicates soluble lead concentration using STLC or TCLP methods(in mg/L)
<br /> NE=not established
<br /> Concentrations in bold exceed one or more of the regulatory screening levels to which they were compared.
<br /> Soil samples analyzed by Associated Laboratories,Inc.
<br /> Metals analyzed by Environmental Protection Agency(EPA)Method 6010B/7471A
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