crawford station former mgp remedial investigation ...ns ns ns nvt ns ns ns ns ns ns ns ns ns 20 ns...

19
NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information Crawford MGP GW through July 2016 page 1 of 18 Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016 Crawford Station Former MGP Site Chicago, IL EPA ID# ILN000510192 Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9) PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC Unique Field ID Sample Location Sample Date 2-Methylnaphthalene (μg/l) Acenaphthene (μg/l) Acenaphthylene (μg/l) Anthracene (μg/l) Benzo(a)anthracene (μg/l) Benzo(a)pyrene (μg/l) Benzo(b)fluoranthene (μg/l) Benzo(g,h,i)perylene (μg/l) Benzo(k)fluoranthene (μg/l) Chrysene (μg/l) Dibenz(a,h)anthracene (μg/l) Fluoranthene (μg/l) Fluorene (μg/l) Indeno(1,2,3-cd)pyrene (μg/l) Naphthalene (μg/l) Phenanthrene (μg/l) Pyrene (μg/l) Carbazole (μg/l) Dibenzofuran (μg/l) Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7 Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9 Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NS Bold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS . 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038 U < 0.023 U < 0.017 U 0.071 J < 0.036 U 0.56 1 < 0.03 U 1.9 1.4 1 1.2 J < 1.1 U 042314017 (N) MWA101 (N) 04/23/2014 0.089 0.74 0.24 J 0.22 J 0.05 0.027 J 0.02 J 0.016 J 0.025 J 0.054 0.0059 J 0.23 J 0.25 J 0.013 J 0.37 0.34 J 0.61 J < 1 U < 1 U 070914064 MWA101 07/09/2014 0.08 1.2 0.26 0.18 0.019 J < 0.0089 U < 0.0063 U < 0.0038 U 0.0046 J 0.019 J < 0.006 U 0.17 0.28 < 0.005 U 0.37 0.31 0.62 < 0.98 U < 0.98 U 101614025 (N) MWA101 (N) 10/16/2014 0.027 J 1.2 0.24 0.19 0.019 J < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U 0.018 J < 0.0034 U 0.26 0.3 < 0.0036 U 0.2 J 0.37 0.86 < 0.98 U < 0.98 U 012715016 MWA101 01/27/2015 < 0.0088 U 0.34 0.16 0.1 0.032 J 0.0093 J 0.014 J 0.015 J 0.0079 J 0.041 J 0.0077 J 0.19 0.12 0.009 J 0.049 J 0.12 0.67 < 0.98 U < 0.98 U 041515028 MWA101 04/15/2015 < 0.0048 U 1.3 0.16 0.088 0.012 J < 0.0042 UJ < 0.0051 U < 0.0033 U < 0.0054 U 0.0096 J < 0.0053 UJ 0.082 0.16 < 0.0034 U 0.3 0.15 0.45 < 1 U < 1.1 U 102715013 MWA101 10/27/2015 0.0055 J 0.57 J+ 0.15 J+ 0.11 J+ 0.02 J < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ 0.021 J+ < 0.0055 UJ 0.22 J+ 0.31 J+ < 0.0035 UJ 0.036 J 0.36 J+ 0.52 J+ < 0.71 U < 0.73 U 020116142 MWA101 02/01/2016 < 0.0069 U 1.3 0.18 0.12 < 0.016 U < 0.0047 U 0.0059 J < 0.0037 U < 0.006 U 0.016 J < 0.0059 U 0.12 0.15 < 0.0038 U 0.3 0.1 0.43 < 0.75 U < 0.77 U 041316035 (N) MWA101 (N) 04/13/2016 0.0031 J 1 0.15 0.08 < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U 0.013 J < 0.0056 U 0.1 0.11 < 0.0036 U 0.015 J 0.065 0.47 < 0.75 U < 0.77 U 070716014 MWA101 07/07/2016 < 0.0029 U 0.89 0.12 0.072 < 0.0053 U < 0.0046 U < 0.0055 U < 0.0036 U < 0.0059 U 0.0094 J < 0.0058 U 0.092 0.13 < 0.0037 U 0.011 J 0.065 0.37 < 0.76 U < 0.78 U 020414024 MWA102 02/04/2014 < 0.0075 U < 0.008 U < 0.0074 U < 0.0078 U < 0.0062 U < 0.01 U < 0.0072 U < 0.0044 U < 0.0032 U 0.006 J < 0.0068 U 0.0085 J < 0.0076 U < 0.0057 U < 0.0094 U < 0.0096 U < 0.0088 U < 1.1 U < 1.1 U 042314019 MWA102 04/23/2014 < 0.0068 U < 0.0073 U < 0.0067 U 0.01 J < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U 0.0029 J 0.0034 J < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U 070914061 (N) MWA102 (N) 07/09/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U < 0.008 U < 1 U < 1 U 101614024 MWA102 10/16/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.005 U < 0.0029 U < 0.0036 U < 0.006 U < 0.0087 U < 0.0058 U < 0.97 UJ < 0.97 U 012715012 MWA102 01/27/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U 0.01 J < 0.0034 U 0.0085 J < 0.0029 U < 0.0036 U 0.0082 J 0.045 J < 0.011 U < 0.98 U < 0.98 U 041515023 (N) MWA102 (N) 04/15/2015 < 0.0026 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 UJ < 0.0051 U < 0.0033 U < 0.0054 U 0.0045 J < 0.0053 UJ < 0.009 U < 0.0038 U < 0.0034 U < 0.0049 U < 0.0073 U 0.0081 J < 1 U < 1 U 102715008 MWA102 10/27/2015 < 0.0029 UJ < 0.0053 U < 0.0053 U < 0.0043 UJ < 0.0055 UJ 0.0054 J+ 0.0087 J+ 0.0081 J+ 0.0079 J+ 0.012 J+ < 0.0059 UJ < 0.01 UJ < 0.0043 U 0.0052 J < 0.0048 UJ < 0.0081 UJ < 0.0082 UJ < 0.85 U < 0.87 U 020116144 MWA102 02/01/2016 < 0.0077 U < 0.0054 U < 0.0054 U < 0.0044 U < 0.0056 U < 0.0048 U < 0.0058 U < 0.0038 U < 0.0061 U < 0.0046 U < 0.006 U < 0.01 U < 0.0044 U < 0.0039 U < 0.0073 U < 0.0083 U < 0.0084 U < 0.77 U < 0.79 U 041316041 MWA102 04/13/2016 < 0.0028 U < 0.005 U < 0.005 U < 0.0041 U < 0.0052 U < 0.0045 U < 0.0054 U < 0.0035 U < 0.0057 U < 0.0043 U < 0.0056 U < 0.0095 U < 0.0041 U < 0.0036 U 0.005 J < 0.0077 U < 0.0078 U < 0.73 U < 0.75 U 070716012 MWA102 07/07/2016 < 0.0031 U < 0.0055 U < 0.0055 U < 0.0045 U < 0.0057 U < 0.0049 U < 0.0059 U < 0.0039 U < 0.0063 U < 0.0047 U < 0.0062 U < 0.01 U < 0.0045 U < 0.004 U 0.0056 J < 0.0085 U < 0.01 U < 0.76 U < 0.78 U 020514030 MWB101 02/05/2014 < 0.0072 U < 0.0076 U < 0.0071 U 0.025 J < 0.0059 U < 0.0097 U < 0.0069 U < 0.0042 U < 0.0031 U < 0.0034 U < 0.0065 U < 0.008 U < 0.0073 U < 0.0054 U < 0.009 U < 0.0092 U < 0.0085 U < 1 UJ < 1.1 U 042314015 MWB101 04/23/2014 < 0.0069 U < 0.0073 U < 0.0068 U 0.02 J < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 1 U < 1 U 070914063 MWB101 07/09/2014 < 0.0067 U < 0.0071 U < 0.0066 U 0.022 J < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U < 0.0029 U 0.0032 J < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 1 U < 1 U 101614028 MWB101 10/16/2014 < 0.0084 U < 0.0036 U < 0.0031 U 0.0086 J < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U 0.0033 J < 0.0036 U < 0.0061 U < 0.0088 U < 0.0059 U < 0.97 UJ < 0.97 U 012815024 MWB101 01/28/2015 < 0.0085 U < 0.0037 U < 0.0032 U 0.0063 J < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U 0.0055 J < 0.003 U < 0.0037 U 0.0067 J < 0.009 U 0.0084 J < 1 U < 1 U 041515033 MWB101 04/15/2015 < 0.0027 U < 0.0048 U < 0.0048 U 0.0052 J < 0.005 U < 0.0043 UJ < 0.0052 U < 0.0034 U < 0.0055 U < 0.0041 U < 0.0054 UJ < 0.0091 U < 0.0039 U < 0.0035 U < 0.0053 U < 0.0078 U < 0.0075 U < 1 U < 1 U 071315002 MWB101 07/13/2015 0.003 J < 0.0049 U < 0.0048 U 0.011 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 UJ < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U 0.0075 J < 0.0075 U < 0.0075 U < 1 U < 1 U 102715016 MWB101 10/27/2015 < 0.0027 UJ < 0.0049 U < 0.0049 U 0.0041 J < 0.0051 UJ < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U 0.0046 J < 0.0035 UJ < 0.0045 UJ < 0.0076 U < 0.0076 U < 0.71 U < 0.73 U 020116139 MWB101 02/01/2016 < 0.0052 U < 0.005 U < 0.0049 U 0.0075 J < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.016 U < 0.0077 U < 0.0077 U < 0.72 U < 0.74 U 041316031 MWB101 04/13/2016 0.0057 J < 0.0046 U < 0.0046 U 0.01 J < 0.0048 U < 0.0041 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ 0.014 J < 0.0052 UJ < 0.0088 U < 0.0038 U < 0.0033 UJ 0.0057 J 0.0098 J < 0.0072 U < 0.75 U < 0.77 U 070716017 MWB101 07/07/2016 < 0.0027 U < 0.0049 U < 0.0048 U 0.011 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 U < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U < 0.0044 U < 0.0075 U < 0.0098 U < 0.77 U < 0.79 U 041316039 MWB103 04/13/2016 0.0025 J < 0.0045 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.004 U < 0.0048 U < 0.0032 U < 0.0051 U 0.004 J < 0.0051 U < 0.0085 U < 0.0037 U < 0.0033 U 0.0056 J 0.014 J < 0.011 U < 0.75 U < 0.77 U 070716019 (N) MWB103 (N) 07/07/2016 0.0031 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U 0.0064 J 0.0081 J < 0.0074 U < 0.71 U < 0.73 U 041416049 MWC101 04/14/2016 0.13 J 53.1 3.7 1.8 0.11 J 0.041 J 0.073 J 0.025 J 0.035 J 0.18 J < 0.026 U 1.3 4.7 < 0.017 U 0.31 0.12 J 2.1 3.6 0.8 J 070616003 MWC101 07/06/2016 51.6 45.6 1.6 J 3.1 < 0.2 U < 0.17 U < 0.2 U < 0.13 U < 0.21 U 0.18 J < 0.21 U 1.2 J 11.3 < 0.14 U 386 10.2 1.7 J < 14.7 U < 15.1 U 042414028 MWO101 04/24/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U 0.0041 J 0.0034 J 0.0032 J < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1.1 U 071114088 MWO101 07/11/2014 < 0.009 U < 0.0096 U < 0.0088 U 0.042 J 0.049 J 0.034 J 0.042 J 0.037 J 0.039 J 0.05 J 0.021 J 0.11 J < 0.0092 U 0.031 J < 0.011 U 0.041 J 0.13 J -- -- 101614021 MWO101 10/16/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U 0.0051 J < 0.0029 U < 0.0035 U < 0.006 U < 0.0086 U 0.006 J < 1.1 UJ < 1.1 UJ 012915031 MWO101 01/29/2015 < 0.01 U 0.0083 J 0.016 J < 0.003 U 0.094 0.084 0.15 0.074 0.065 0.2 0.016 J 0.22 0.011 J 0.054 J 0.0091 J 0.14 0.22 -- -- 041515032 MWO101 04/15/2015 < 0.0057 U < 0.0049 U < 0.0048 U 0.0087 J 0.033 J 0.021 J 0.043 J 0.021 J 0.012 J 0.03 J < 0.0055 UJ 0.057 < 0.004 U 0.016 J < 0.0044 U 0.028 J 0.059 -- -- 071615036 MWO101 07/16/2015 0.0047 J < 0.0048 U < 0.0048 U 0.0092 J < 0.005 U 0.0089 J < 0.015 U < 0.0094 UJ 0.0065 J 0.042 J < 0.0054 U 0.016 J < 0.0039 U 0.0076 J < 0.015 U 0.023 J < 0.021 U -- -- 102815036 MWO101 10/28/2015 0.0029 J < 0.0051 U < 0.005 U < 0.0041 U 0.012 J 0.0058 J 0.013 J 0.0063 J < 0.0057 UJ 0.01 J < 0.0057 UJ < 0.0096 U < 0.0041 U 0.0039 J 0.011 J 0.0088 J 0.012 J -- -- 012716112 MWO101 01/27/2016 < 0.011 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.019 U < 0.0077 U < 0.0077 U < 0.77 U < 0.79 U 041216017 MWO101 04/12/2016 0.0081 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U 0.033 J 0.0086 J 0.013 J < 0.79 U < 0.81 U DRAFT

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Page 1: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 1 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

.020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038 U < 0.023 U < 0.017 U 0.071 J < 0.036 U 0.56 1 < 0.03 U 1.9 1.4 1 1.2 J < 1.1 U

042314017 (N) MWA101 (N) 04/23/2014 0.089 0.74 0.24 J 0.22 J 0.05 0.027 J 0.02 J 0.016 J 0.025 J 0.054 0.0059 J 0.23 J 0.25 J 0.013 J 0.37 0.34 J 0.61 J < 1 U < 1 U

070914064 MWA101 07/09/2014 0.08 1.2 0.26 0.18 0.019 J < 0.0089 U < 0.0063 U < 0.0038 U 0.0046 J 0.019 J < 0.006 U 0.17 0.28 < 0.005 U 0.37 0.31 0.62 < 0.98 U < 0.98 U

101614025 (N) MWA101 (N) 10/16/2014 0.027 J 1.2 0.24 0.19 0.019 J < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U 0.018 J < 0.0034 U 0.26 0.3 < 0.0036 U 0.2 J 0.37 0.86 < 0.98 U < 0.98 U

012715016 MWA101 01/27/2015 < 0.0088 U 0.34 0.16 0.1 0.032 J 0.0093 J 0.014 J 0.015 J 0.0079 J 0.041 J 0.0077 J 0.19 0.12 0.009 J 0.049 J 0.12 0.67 < 0.98 U < 0.98 U

041515028 MWA101 04/15/2015 < 0.0048 U 1.3 0.16 0.088 0.012 J < 0.0042 UJ < 0.0051 U < 0.0033 U < 0.0054 U 0.0096 J < 0.0053 UJ 0.082 0.16 < 0.0034 U 0.3 0.15 0.45 < 1 U < 1.1 U

102715013 MWA101 10/27/2015 0.0055 J 0.57 J+ 0.15 J+ 0.11 J+ 0.02 J < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ 0.021 J+ < 0.0055 UJ 0.22 J+ 0.31 J+ < 0.0035 UJ 0.036 J 0.36 J+ 0.52 J+ < 0.71 U < 0.73 U

020116142 MWA101 02/01/2016 < 0.0069 U 1.3 0.18 0.12 < 0.016 U < 0.0047 U 0.0059 J < 0.0037 U < 0.006 U 0.016 J < 0.0059 U 0.12 0.15 < 0.0038 U 0.3 0.1 0.43 < 0.75 U < 0.77 U

041316035 (N) MWA101 (N) 04/13/2016 0.0031 J 1 0.15 0.08 < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U 0.013 J < 0.0056 U 0.1 0.11 < 0.0036 U 0.015 J 0.065 0.47 < 0.75 U < 0.77 U

070716014 MWA101 07/07/2016 < 0.0029 U 0.89 0.12 0.072 < 0.0053 U < 0.0046 U < 0.0055 U < 0.0036 U < 0.0059 U 0.0094 J < 0.0058 U 0.092 0.13 < 0.0037 U 0.011 J 0.065 0.37 < 0.76 U < 0.78 U

020414024 MWA102 02/04/2014 < 0.0075 U < 0.008 U < 0.0074 U < 0.0078 U < 0.0062 U < 0.01 U < 0.0072 U < 0.0044 U < 0.0032 U 0.006 J < 0.0068 U 0.0085 J < 0.0076 U < 0.0057 U < 0.0094 U < 0.0096 U < 0.0088 U < 1.1 U < 1.1 U

042314019 MWA102 04/23/2014 < 0.0068 U < 0.0073 U < 0.0067 U 0.01 J < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U 0.0029 J 0.0034 J < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

070914061 (N) MWA102 (N) 07/09/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U < 0.008 U < 1 U < 1 U

101614024 MWA102 10/16/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.005 U < 0.0029 U < 0.0036 U < 0.006 U < 0.0087 U < 0.0058 U < 0.97 UJ < 0.97 U

012715012 MWA102 01/27/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U 0.01 J < 0.0034 U 0.0085 J < 0.0029 U < 0.0036 U 0.0082 J 0.045 J < 0.011 U < 0.98 U < 0.98 U

041515023 (N) MWA102 (N) 04/15/2015 < 0.0026 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 UJ < 0.0051 U < 0.0033 U < 0.0054 U 0.0045 J < 0.0053 UJ < 0.009 U < 0.0038 U < 0.0034 U < 0.0049 U < 0.0073 U 0.0081 J < 1 U < 1 U

102715008 MWA102 10/27/2015 < 0.0029 UJ < 0.0053 U < 0.0053 U < 0.0043 UJ < 0.0055 UJ 0.0054 J+ 0.0087 J+ 0.0081 J+ 0.0079 J+ 0.012 J+ < 0.0059 UJ < 0.01 UJ < 0.0043 U 0.0052 J < 0.0048 UJ < 0.0081 UJ < 0.0082 UJ < 0.85 U < 0.87 U

020116144 MWA102 02/01/2016 < 0.0077 U < 0.0054 U < 0.0054 U < 0.0044 U < 0.0056 U < 0.0048 U < 0.0058 U < 0.0038 U < 0.0061 U < 0.0046 U < 0.006 U < 0.01 U < 0.0044 U < 0.0039 U < 0.0073 U < 0.0083 U < 0.0084 U < 0.77 U < 0.79 U

041316041 MWA102 04/13/2016 < 0.0028 U < 0.005 U < 0.005 U < 0.0041 U < 0.0052 U < 0.0045 U < 0.0054 U < 0.0035 U < 0.0057 U < 0.0043 U < 0.0056 U < 0.0095 U < 0.0041 U < 0.0036 U 0.005 J < 0.0077 U < 0.0078 U < 0.73 U < 0.75 U

070716012 MWA102 07/07/2016 < 0.0031 U < 0.0055 U < 0.0055 U < 0.0045 U < 0.0057 U < 0.0049 U < 0.0059 U < 0.0039 U < 0.0063 U < 0.0047 U < 0.0062 U < 0.01 U < 0.0045 U < 0.004 U 0.0056 J < 0.0085 U < 0.01 U < 0.76 U < 0.78 U

020514030 MWB101 02/05/2014 < 0.0072 U < 0.0076 U < 0.0071 U 0.025 J < 0.0059 U < 0.0097 U < 0.0069 U < 0.0042 U < 0.0031 U < 0.0034 U < 0.0065 U < 0.008 U < 0.0073 U < 0.0054 U < 0.009 U < 0.0092 U < 0.0085 U < 1 UJ < 1.1 U

042314015 MWB101 04/23/2014 < 0.0069 U < 0.0073 U < 0.0068 U 0.02 J < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 1 U < 1 U

070914063 MWB101 07/09/2014 < 0.0067 U < 0.0071 U < 0.0066 U 0.022 J < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U < 0.0029 U 0.0032 J < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 1 U < 1 U

101614028 MWB101 10/16/2014 < 0.0084 U < 0.0036 U < 0.0031 U 0.0086 J < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U 0.0033 J < 0.0036 U < 0.0061 U < 0.0088 U < 0.0059 U < 0.97 UJ < 0.97 U

012815024 MWB101 01/28/2015 < 0.0085 U < 0.0037 U < 0.0032 U 0.0063 J < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U 0.0055 J < 0.003 U < 0.0037 U 0.0067 J < 0.009 U 0.0084 J < 1 U < 1 U

041515033 MWB101 04/15/2015 < 0.0027 U < 0.0048 U < 0.0048 U 0.0052 J < 0.005 U < 0.0043 UJ < 0.0052 U < 0.0034 U < 0.0055 U < 0.0041 U < 0.0054 UJ < 0.0091 U < 0.0039 U < 0.0035 U < 0.0053 U < 0.0078 U < 0.0075 U < 1 U < 1 U

071315002 MWB101 07/13/2015 0.003 J < 0.0049 U < 0.0048 U 0.011 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 UJ < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U 0.0075 J < 0.0075 U < 0.0075 U < 1 U < 1 U

102715016 MWB101 10/27/2015 < 0.0027 UJ < 0.0049 U < 0.0049 U 0.0041 J < 0.0051 UJ < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U 0.0046 J < 0.0035 UJ < 0.0045 UJ < 0.0076 U < 0.0076 U < 0.71 U < 0.73 U

020116139 MWB101 02/01/2016 < 0.0052 U < 0.005 U < 0.0049 U 0.0075 J < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.016 U < 0.0077 U < 0.0077 U < 0.72 U < 0.74 U

041316031 MWB101 04/13/2016 0.0057 J < 0.0046 U < 0.0046 U 0.01 J < 0.0048 U < 0.0041 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ 0.014 J < 0.0052 UJ < 0.0088 U < 0.0038 U < 0.0033 UJ 0.0057 J 0.0098 J < 0.0072 U < 0.75 U < 0.77 U

070716017 MWB101 07/07/2016 < 0.0027 U < 0.0049 U < 0.0048 U 0.011 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 U < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U < 0.0044 U < 0.0075 U < 0.0098 U < 0.77 U < 0.79 U

041316039 MWB103 04/13/2016 0.0025 J < 0.0045 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.004 U < 0.0048 U < 0.0032 U < 0.0051 U 0.004 J < 0.0051 U < 0.0085 U < 0.0037 U < 0.0033 U 0.0056 J 0.014 J < 0.011 U < 0.75 U < 0.77 U

070716019 (N) MWB103 (N) 07/07/2016 0.0031 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U 0.0064 J 0.0081 J < 0.0074 U < 0.71 U < 0.73 U

041416049 MWC101 04/14/2016 0.13 J 53.1 3.7 1.8 0.11 J 0.041 J 0.073 J 0.025 J 0.035 J 0.18 J < 0.026 U 1.3 4.7 < 0.017 U 0.31 0.12 J 2.1 3.6 0.8 J

070616003 MWC101 07/06/2016 51.6 45.6 1.6 J 3.1 < 0.2 U < 0.17 U < 0.2 U < 0.13 U < 0.21 U 0.18 J < 0.21 U 1.2 J 11.3 < 0.14 U 386 10.2 1.7 J < 14.7 U < 15.1 U

042414028 MWO101 04/24/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U 0.0041 J 0.0034 J 0.0032 J < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1.1 U

071114088 MWO101 07/11/2014 < 0.009 U < 0.0096 U < 0.0088 U 0.042 J 0.049 J 0.034 J 0.042 J 0.037 J 0.039 J 0.05 J 0.021 J 0.11 J < 0.0092 U 0.031 J < 0.011 U 0.041 J 0.13 J -- --

101614021 MWO101 10/16/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U 0.0051 J < 0.0029 U < 0.0035 U < 0.006 U < 0.0086 U 0.006 J < 1.1 UJ < 1.1 UJ

012915031 MWO101 01/29/2015 < 0.01 U 0.0083 J 0.016 J < 0.003 U 0.094 0.084 0.15 0.074 0.065 0.2 0.016 J 0.22 0.011 J 0.054 J 0.0091 J 0.14 0.22 -- --

041515032 MWO101 04/15/2015 < 0.0057 U < 0.0049 U < 0.0048 U 0.0087 J 0.033 J 0.021 J 0.043 J 0.021 J 0.012 J 0.03 J < 0.0055 UJ 0.057 < 0.004 U 0.016 J < 0.0044 U 0.028 J 0.059 -- --

071615036 MWO101 07/16/2015 0.0047 J < 0.0048 U < 0.0048 U 0.0092 J < 0.005 U 0.0089 J < 0.015 U < 0.0094 UJ 0.0065 J 0.042 J < 0.0054 U 0.016 J < 0.0039 U 0.0076 J < 0.015 U 0.023 J < 0.021 U -- --

102815036 MWO101 10/28/2015 0.0029 J < 0.0051 U < 0.005 U < 0.0041 U 0.012 J 0.0058 J 0.013 J 0.0063 J < 0.0057 UJ 0.01 J < 0.0057 UJ < 0.0096 U < 0.0041 U 0.0039 J 0.011 J 0.0088 J 0.012 J -- --

012716112 MWO101 01/27/2016 < 0.011 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.019 U < 0.0077 U < 0.0077 U < 0.77 U < 0.79 U

041216017 MWO101 04/12/2016 0.0081 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U 0.033 J 0.0086 J 0.013 J < 0.79 U < 0.81 U

DRAFT

Page 2: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 2 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

020414019 (N) MWO102 (N) 02/04/2014 0.3 0.65 0.05 J 0.14 J 0.042 J < 0.049 U < 0.035 U 0.024 J < 0.016 U 0.056 J < 0.033 U 0.26 J 0.3 < 0.028 U 2 0.37 0.35 < 0.76 U < 1.2 U

042414035 MWO102 04/24/2014 0.054 0.19 0.017 J 0.051 0.017 J 0.01 J 0.0085 J 0.0062 J 0.0091 J 0.02 J < 0.0062 U 0.095 0.091 < 0.0052 U 0.6 0.11 0.13 < 1.1 U < 1.1 U

071114084 MWO102 07/11/2014 < 0.0067 U 0.054 < 0.0066 U 0.02 J 0.0057 J < 0.009 U < 0.0064 U < 0.0039 U 0.0032 J 0.0074 J < 0.0061 U 0.031 J 0.025 J < 0.0051 U 0.072 0.041 J 0.047 J < 1.1 U < 1.1 U

101514017 MWO102 10/15/2014 < 0.008 U 0.076 0.0071 J 0.03 J 0.0044 J < 0.0025 U < 0.0049 U < 0.0051 U < 0.0047 U < 0.0078 U < 0.0033 U < 0.041 U 0.04 J < 0.0035 U 0.021 J < 0.033 U < 0.072 U < 0.98 U < 0.98 U

012915034 MWO102 01/29/2015 < 0.008 U 0.056 0.0057 J < 0.0024 U 0.0048 J < 0.0025 U 0.0067 J < 0.0051 U < 0.0047 U 0.012 J < 0.0033 U 0.031 J 0.019 J < 0.0035 U 0.0068 J 0.022 J 0.043 J < 1 U < 1 U

041515034 MWO102 04/15/2015 < 0.004 U 0.046 J 0.0053 J 0.014 J 0.016 J 0.0045 J 0.0089 J 0.0047 J < 0.0055 U 0.011 J < 0.0055 UJ 0.033 J 0.024 J < 0.0035 U < 0.0044 U 0.015 J 0.044 J < 0.96 U < 0.96 U

071415018 MWO102 07/14/2015 < 0.0034 U 0.075 < 0.005 U 0.022 J < 0.0052 U < 0.0045 U < 0.0054 U 0.0039 J < 0.0057 U 0.0046 J < 0.0056 U 0.027 J 0.03 J 0.0037 J < 0.04 U 0.0084 J < 0.043 U < 1.1 U < 1.1 U

102815032 (N) MWO102 (N) 10/28/2015 0.024 J 0.2 0.04 J 0.097 0.098 J 0.085 0.11 0.055 0.041 J 0.13 0.0082 J 0.37 0.084 0.032 J 0.66 0.17 0.48 < 0.71 U < 0.77 U

012916128 MWO102 01/29/2016 < 0.0028 U 0.066 < 0.0048 U 0.011 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 U < 0.0055 U < 0.0073 U < 0.0055 U 0.027 J 0.0094 J < 0.0035 U < 0.02 U < 0.0075 U 0.04 J < 0.76 U < 0.78 U

041216025 MWO102 04/12/2016 0.0064 J 0.093 < 0.0047 U 0.013 J 0.012 J < 0.0042 U 0.008 J 0.0066 J < 0.0054 U < 0.011 U < 0.0053 U 0.04 J 0.0091 J 0.0039 J 0.069 0.014 J 0.057 < 0.73 U < 0.75 U

013114010 MWO103 01/31/2014 < 0.0044 U < 0.0052 U < 0.0042 U < 0.0066 U < 0.0042 U < 0.0033 U < 0.0039 U < 0.0055 U < 0.005 U < 0.004 U < 0.0037 U < 0.0051 U < 0.0055 U < 0.0054 U < 0.0056 U < 0.0093 U < 0.0055 U < 0.76 U < 1.1 U

042514041 MWO103 04/25/2014 < 0.0072 U < 0.0076 U < 0.0071 U < 0.0075 U < 0.0059 U < 0.0097 U < 0.0069 U < 0.0042 U < 0.0031 U 0.0048 J < 0.0065 U < 0.008 U < 0.0073 U < 0.0054 U < 0.009 U < 0.0092 U < 0.0085 U < 1.1 U < 1.1 U

070914068 MWO103 07/09/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U 0.011 J < 0.0087 U < 0.008 U < 1 U < 1 U

102014038 MWO103 10/20/2014 < 0.0085 U < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U < 0.0052 U < 0.003 U < 0.0037 U < 0.0062 U 0.01 J < 0.006 U < 0.98 UJ < 0.98 UJ

012715008 MWO103 01/27/2015 < 0.0079 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0031 U < 0.0025 U < 0.0048 U < 0.005 U < 0.0046 U < 0.006 U < 0.0032 UJ < 0.0048 U < 0.0028 U < 0.0034 U 0.0069 J 0.013 J < 0.0056 U < 0.97 U < 0.97 U

041515029 MWO103 04/15/2015 < 0.0026 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 UJ < 0.0051 U < 0.0033 U < 0.0054 U < 0.004 U < 0.0053 UJ < 0.009 U < 0.0038 U < 0.0034 U < 0.0043 U 0.0074 J < 0.0073 U < 1.1 U < 1.1 U

071515023 MWO103 07/15/2015 < 0.003 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 U < 0.0048 U < 0.0057 U < 0.0038 UJ < 0.0061 U < 0.0046 U < 0.006 U < 0.01 U < 0.0043 U < 0.0038 U < 0.0049 U < 0.0082 U 0.01 J < 1.1 U < 1.1 U

102715018 MWO103 10/27/2015 < 0.0028 UJ < 0.005 U < 0.005 U < 0.0041 U < 0.0052 U < 0.0045 U < 0.0054 U < 0.0035 U < 0.0057 U < 0.0043 U < 0.0056 U < 0.0095 U < 0.0041 U < 0.0036 UJ < 0.0046 UJ 0.011 J+ < 0.0078 U < 0.72 U < 0.74 U

012816117 (N) MWO103 (N) 01/28/2016 0.012 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 U < 0.0089 U < 0.0038 U < 0.0034 U < 0.016 U 0.008 J < 0.0073 U < 0.73 U < 0.75 U

041216013 MWO103 04/12/2016 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U 0.0038 J < 0.0056 U < 0.0042 U < 0.0055 U 0.011 J < 0.004 U < 0.0035 U < 0.0045 U < 0.0076 U 0.016 J < 0.73 U < 0.75 U

013114008 MWO104 01/31/2014 < 0.0044 U < 0.0052 U < 0.0042 U < 0.0066 U < 0.0042 U < 0.0033 U < 0.0039 U < 0.0055 U < 0.005 U < 0.004 U < 0.0037 U < 0.0051 U < 0.0055 U < 0.0054 U 0.023 J < 0.0093 U < 0.0055 U < 0.76 U < 1.2 U

042414033 MWO104 04/24/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

071014074 MWO104 07/10/2014 < 0.0067 U < 0.0071 U < 0.0066 U < 0.007 U < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 1 U < 1 U

102014040 MWO104 10/20/2014 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U 0.0065 J 0.012 J < 0.0059 U < 0.98 U < 0.98 U

012715011 MWO104 01/27/2015 < 0.008 U < 0.0035 U < 0.003 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.0051 U < 0.0047 U 0.0087 J < 0.0033 UJ 0.0079 J < 0.0028 U < 0.0035 U 0.007 J 0.025 J < 0.011 U < 1 U < 1 U

041515025 MWO104 04/15/2015 0.0056 J < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 UJ < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 UJ < 0.0088 U < 0.0038 U < 0.0033 U 0.011 J 0.01 J < 0.0072 U < 1 U < 1 U

071515025 MWO104 07/15/2015 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 UJ < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U < 0.0045 U < 0.0076 U < 0.008 U < 1.1 U < 1.1 U

102715021 MWO104 10/27/2015 < 0.0027 UJ < 0.0049 UJ < 0.0049 UJ < 0.004 UJ < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ 0.0047 J+ < 0.0055 UJ < 0.0093 UJ < 0.004 UJ < 0.0035 UJ < 0.0045 UJ < 0.0076 UJ < 0.0076 UJ < 0.95 U < 0.97 U

012716106 MWO104 01/27/2016 < 0.013 U 0.005 J 0.009 J < 0.004 U < 0.0051 U < 0.0044 U < 0.007 U < 0.0035 U < 0.0056 U < 0.016 U < 0.0056 U 0.016 J < 0.004 U < 0.0036 U < 0.015 U 0.034 J 0.025 J < 0.74 U < 0.76 U

041916058 (N) MWO104 (N) 04/19/2016 0.0042 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U < 0.0071 U < 0.0076 U < 0.0076 U < 0.73 U < 0.75 U

013014003 MWO106 01/30/2014 < 0.0044 U < 0.0052 U < 0.0041 U < 0.0065 U < 0.0041 U < 0.0033 U < 0.0039 U < 0.0055 U < 0.005 U < 0.004 U < 0.0036 U < 0.005 U < 0.0054 U < 0.0053 U 0.02 J < 0.0092 U < 0.0054 U < 0.76 U < 1.2 U

042514040 MWO106 04/25/2014 < 0.0074 U < 0.0079 U < 0.0073 U < 0.0077 U < 0.0061 U < 0.01 U < 0.0071 U < 0.0043 U < 0.0032 U 0.0041 J < 0.0068 U < 0.0083 U < 0.0076 U < 0.0056 U 0.076 < 0.0095 U < 0.0087 U < 0.99 U < 0.99 U

071114081 MWO106 07/11/2014 < 0.0069 U < 0.0073 U < 0.0068 U < 0.0072 U < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 0.99 U < 0.99 U

101414007 MWO106 10/14/2014 < 0.008 U 0.0045 J 0.003 J < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.005 U < 0.0047 U < 0.006 U < 0.0033 U 0.0073 J 0.004 J < 0.0034 U 0.011 J 0.011 J 0.0085 J < 0.97 U < 0.97 U

012915033 MWO106 01/29/2015 < 0.008 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.005 U < 0.0047 U < 0.006 U < 0.0033 U 0.0063 J < 0.0028 U < 0.0034 U 0.01 J 0.02 J 0.0073 J < 0.98 U < 0.98 U

041615040 MWO106 04/16/2015 0.0032 J < 0.0046 U < 0.0046 U < 0.0037 U < 0.0048 U < 0.0041 UJ 0.0058 J 0.0037 J < 0.0052 U 0.0048 J < 0.0051 UJ < 0.0087 U < 0.0037 U < 0.0033 U < 0.0042 U 0.0074 J 0.0097 J < 0.97 U < 0.97 U

071515024 MWO106 07/15/2015 0.0043 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0041 UJ < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U 0.0038 J < 0.0068 U 0.012 J < 0.017 U < 1 U < 1 U

102815030 MWO106 10/28/2015 < 0.0062 U < 0.0049 U < 0.0049 U < 0.004 U 0.0063 J 0.01 J 0.013 J 0.011 J 0.01 J 0.0094 J 0.0064 J < 0.0093 U < 0.004 U 0.0092 J < 0.014 U 0.0089 J < 0.0076 U < 0.78 U < 0.8 U

012916126 MWO106 01/29/2016 < 0.0033 U < 0.0052 U < 0.0052 U < 0.0043 U < 0.0054 U < 0.0047 U < 0.0056 U < 0.0037 U < 0.0059 U < 0.0045 U < 0.0059 U < 0.0099 U < 0.0043 U < 0.0038 U < 0.0067 U < 0.0081 U < 0.0081 U < 0.76 U < 0.78 U

041216021 (N) MWO106 (N) 04/12/2016 0.0032 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U 0.0037 J < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U 0.021 J < 0.0076 U 0.012 J < 0.71 U < 0.72 U

071114078 MWQ102 07/11/2014 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- < 8.5 U < 8.5 U

021315045 MWQ102 02/13/2015 < 0.0079 U 0.0075 J 0.0035 J 0.0053 J 0.018 J < 0.015 U < 0.022 U < 0.013 U 0.0095 J 0.022 J 0.0034 J 0.038 J 0.0042 J < 0.01 U 0.017 J 0.031 J 0.051 < 1.1 U < 1.1 U

041415015 MWQ102 04/14/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

071415010 MWQ102 07/14/2015 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

012716108 MWQ102 01/27/2016 < 0.0081 U 0.0066 J < 0.0045 U < 0.0037 U < 0.0047 U 0.0053 J < 0.014 U < 0.0061 U 0.0077 J < 0.017 U < 0.0051 U 0.029 J 0.0053 J < 0.0033 U < 0.039 U 0.039 J 0.032 J -- --

041516054 MWQ102 04/15/2016 0.014 J 0.027 J 0.036 J 0.084 0.23 0.37 0.66 0.37 0.35 0.57 0.052 J 1 0.035 J 0.28 0.033 J 0.49 0.81 -- --

Page 3: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 3 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

042314014 MWQ104 04/23/2014 < 0.011 U < 0.012 U < 0.011 U 0.026 J 0.06 J 0.082 0.076 J 0.075 J 0.081 0.092 0.017 J 0.13 < 0.011 U 0.061 J 0.039 J 0.076 J 0.12 < 1.6 U < 1.6 U

071114080 MWQ104 07/11/2014 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- < 1 U < 1 U

101414006 MWQ104 10/14/2014 < 0.0084 U < 0.0037 U < 0.0031 U < 0.0025 U < 0.0034 U < 0.0032 U < 0.0051 U < 0.0053 U < 0.005 U 0.0075 J < 0.0034 U 0.011 J < 0.003 U < 0.0037 U < 0.0061 U 0.011 J 0.011 J < 2 U < 2 U

021315042 MWQ104 02/13/2015 < 0.008 U 0.0099 J 0.009 J < 0.0024 U 0.074 0.089 0.13 < 0.08 U 0.059 0.13 0.014 J 0.18 0.009 J < 0.059 U 0.021 J 0.097 0.21 < 2.4 U < 2.4 U

041415009 MWQ104 04/14/2015 0.0089 J 0.0046 J < 0.0045 U 0.004 J 0.016 J 0.0065 J 0.018 J 0.0078 J < 0.0051 U 0.014 J < 0.0051 UJ 0.031 J 0.0068 J 0.0061 J 0.0095 J 0.027 J 0.029 J -- --

071415006 MWQ104 07/14/2015 < 0.0029 U < 0.0049 U < 0.0048 U < 0.004 U 0.012 J 0.0058 J 0.0096 J 0.0072 J < 0.0055 U 0.007 J < 0.0055 U 0.017 J < 0.004 U 0.0049 J < 0.0047 U 0.0095 J < 0.018 U < 1.7 U < 1.7 U

102615002 MWQ104 10/26/2015 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.0045 U 0.0078 J < 0.0077 U < 0.73 U < 0.75 U

012616102 MWQ104 01/26/2016 < 0.0079 U < 0.0058 U < 0.0057 U < 0.0047 U < 0.006 U < 0.0051 U < 0.0062 U < 0.0041 U < 0.0065 U < 0.0049 U < 0.0065 U < 0.011 U < 0.0047 U < 0.0042 U < 0.053 U 0.012 J < 0.0089 U < 0.75 U < 0.77 U

041116003 MWQ104 04/11/2016 0.02 J 0.015 J < 0.0054 U 0.0053 J < 0.0056 U < 0.0048 UJ < 0.0058 UJ < 0.0045 UJ < 0.0061 UJ 0.0067 J < 0.006 UJ < 0.01 U 0.0076 J < 0.0039 UJ < 0.039 U 0.032 J 0.009 J < 0.76 U < 0.78 U

041516057 MWV101 04/15/2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

070716025 MWV101 07/07/2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

020414022 PA101 02/04/2014 0.008 J < 0.0077 U < 0.0071 U 0.0083 J < 0.006 U < 0.0098 U < 0.0069 U < 0.0042 U < 0.0031 U 0.0079 J < 0.0066 U 0.0095 J 0.012 J < 0.0055 U 0.026 J 0.017 J 0.012 J < 0.76 UJ < 1.1 UJ

042314020 PA101 04/23/2014 0.0095 J 0.0098 J 0.029 J 0.032 J 0.039 J 0.027 J 0.019 J 0.013 J 0.022 J 0.044 J < 0.0065 U 0.07 0.016 J 0.012 J 0.019 J 0.067 0.092 < 1 U < 1 U

070914066 PA101 07/09/2014 < 0.0068 U < 0.0073 U 0.01 J 0.0093 J 0.013 J 0.0099 J 0.0082 J 0.0074 J 0.01 J 0.017 J < 0.0062 U 0.021 J < 0.007 U 0.0052 J 0.011 J 0.018 J 0.03 J < 1 U < 1 U

101614023 PA101 10/16/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U < 0.005 U < 0.0029 U < 0.0035 U 0.012 J < 0.0086 U < 0.0058 U < 0.98 UJ < 0.98 U

012715018 PA101 01/27/2015 0.0096 J 0.0073 J 0.012 J 0.021 J 0.027 J 0.017 J 0.026 J 0.015 J 0.015 J 0.041 J 0.006 J 0.047 J 0.01 J 0.013 J 0.026 J 0.079 0.068 < 0.99 U < 0.99 U

041515031 PA101 04/15/2015 < 0.0079 U 0.008 J 0.025 J 0.022 J 0.044 J 0.029 J 0.051 0.033 J 0.023 J 0.079 < 0.0051 UJ 0.11 0.014 J 0.018 J < 0.0099 U < 0.047 U 0.14 < 1 U < 1 U

102715014 PA101 10/27/2015 0.017 J 0.0085 J+ < 0.005 U 0.01 J+ 0.019 J 0.01 J+ 0.018 J+ 0.0093 J+ 0.0062 J+ 0.021 J+ < 0.0056 U 0.039 J+ 0.013 J+ 0.0056 J 0.022 J 0.051 J+ 0.037 J+ < 0.74 U < 0.76 U

020116141 PA101 02/01/2016 < 0.0048 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U 0.0049 J < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U < 0.033 U 0.0094 J 0.0092 J < 0.73 U < 0.75 U

041316040 PA101 04/13/2016 < 0.0029 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 U < 0.0047 U < 0.0056 U < 0.0068 U < 0.006 U < 0.0045 U < 0.0059 U < 0.01 U < 0.0043 U < 0.0059 U < 0.0048 U < 0.0081 U < 0.0082 U < 0.76 U < 0.78 U

070716015 PA101 07/07/2016 0.0047 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0033 U < 0.0054 U < 0.004 U < 0.0053 U < 0.009 U < 0.0038 U < 0.0034 U 0.013 J < 0.0073 U < 0.01 U < 0.74 U < 0.76 U

020414023 PA102 02/04/2014 < 0.0074 U < 0.0079 U < 0.0073 U < 0.0077 U < 0.0061 U < 0.01 U < 0.0071 U < 0.0043 U < 0.0032 U < 0.0035 U < 0.0068 U < 0.0083 U < 0.0076 U < 0.0056 U < 0.0093 U < 0.0095 U < 0.0087 U < 0.77 U < 1.2 U

042314021 PA102 04/23/2014 < 0.007 U < 0.0075 U < 0.0069 U < 0.0073 U < 0.0058 U < 0.0095 U < 0.0067 U < 0.0041 U < 0.003 U < 0.0033 U < 0.0064 U < 0.0078 U < 0.0072 U < 0.0053 U < 0.0088 U < 0.009 U < 0.0083 U < 1 U < 1 U

070914065 PA102 07/09/2014 < 0.0066 U < 0.007 U < 0.0065 U < 0.0069 U < 0.0055 U < 0.0089 U < 0.0063 U < 0.0038 U < 0.0029 U < 0.0031 U < 0.006 U < 0.0074 U < 0.0068 U < 0.005 U < 0.0083 U < 0.0085 U < 0.0078 U < 1 U < 1 U

101614027 PA102 10/16/2014 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U 0.0081 J < 0.0088 U < 0.0059 U < 0.97 U < 0.97 U

012715010 PA102 01/27/2015 < 0.0085 U < 0.0037 U < 0.0032 U < 0.0026 U 0.017 J 0.0095 J 0.015 J 0.0099 J 0.0059 J 0.032 J < 0.0035 U 0.024 J < 0.003 U 0.006 J 0.0094 J 0.022 J < 0.032 U < 0.99 U < 0.99 U

041515026 PA102 04/15/2015 < 0.0027 U < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U < 0.0043 UJ < 0.0052 U < 0.0034 U < 0.0055 U 0.005 J < 0.0055 UJ < 0.0092 U < 0.004 U < 0.0035 U < 0.0068 U < 0.0075 U < 0.0075 U < 1.1 U < 1.1 U

102715007 PA102 10/27/2015 < 0.0027 UJ < 0.0049 U < 0.0048 U < 0.004 UJ < 0.005 UJ < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ < 0.0042 UJ < 0.0055 UJ < 0.0092 UJ < 0.004 U < 0.0035 UJ 0.0048 J 0.0084 J+ < 0.0075 UJ < 0.72 U < 0.74 U

020116143 PA102 02/01/2016 < 0.0033 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0063 U < 0.0047 U 0.0058 J < 0.0037 U < 0.006 U < 0.0045 U < 0.0059 U < 0.01 U < 0.0043 U < 0.0038 U < 0.0067 U < 0.0081 U < 0.0082 U < 0.76 U < 0.78 U

041316037 PA102 04/13/2016 0.004 J < 0.0055 U < 0.0055 U < 0.0045 U < 0.0057 U < 0.0049 U < 0.0059 U < 0.0039 U < 0.0063 U < 0.0047 U < 0.0062 U < 0.01 U < 0.0045 U < 0.004 U 0.015 J 0.0093 J < 0.0085 U < 0.75 U < 0.77 U

070716013 PA102 07/07/2016 0.0038 J < 0.0057 U < 0.0057 U < 0.0046 U < 0.0059 U < 0.0051 U < 0.0061 U < 0.004 U < 0.0065 U < 0.0049 U < 0.0064 U < 0.011 U < 0.0046 U < 0.0041 U < 0.0052 U < 0.0088 U < 0.01 U < 0.77 U < 0.79 U

020414025 PA103 02/04/2014 < 0.0074 U < 0.0079 U < 0.0073 U < 0.0077 U < 0.0061 U < 0.01 U < 0.0071 U < 0.0043 U < 0.0032 U < 0.0035 U < 0.0068 U < 0.0083 U < 0.0076 U < 0.0056 U < 0.0093 U < 0.0095 U < 0.0087 U < 1.1 U < 1.1 U

042314022 PA103 04/23/2014 < 0.0069 U < 0.0073 U < 0.0068 U < 0.0072 U < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 1 U < 1 U

070914059 PA103 07/09/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U < 0.008 U < 1 U < 1.1 U

012715006 (N) PA103 (N) 01/27/2015 < 0.009 U < 0.0039 U < 0.0033 U 0.0053 J 0.015 J 0.004 J 0.0059 J < 0.0057 U < 0.0053 U 0.032 J < 0.0037 U 0.019 J < 0.0032 U < 0.0039 U 0.016 J 0.075 < 0.015 U < 0.99 U < 0.99 U

041515021 PA103 04/15/2015 < 0.0026 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 UJ < 0.0051 U < 0.0034 U < 0.0054 U 0.0044 J < 0.0053 UJ < 0.009 U < 0.0039 U < 0.0034 U < 0.0051 U < 0.0074 U < 0.0074 U < 1 U < 1 U

102715009 (N) PA103 (N) 10/27/2015 0.0043 J < 0.005 UJ < 0.0049 UJ < 0.004 UJ < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ 0.0057 J+ < 0.0056 UJ < 0.0094 UJ < 0.004 UJ < 0.0036 UJ 0.0052 J 0.011 J+ 0.011 J+ < 0.78 U < 0.8 U

020514031 PB101 02/05/2014 < 0.0072 U < 0.0077 U < 0.0071 U < 0.0076 U < 0.006 U < 0.0098 U < 0.0069 U < 0.0042 U < 0.0031 U 0.0041 J < 0.0066 U < 0.0081 U < 0.0074 U < 0.0055 U < 0.0091 U < 0.0093 U < 0.0086 U < 1.1 U < 1.1 U

042314013 PB101 04/23/2014 0.0098 J 0.0089 J < 0.0067 U < 0.0071 U 0.011 J 0.011 J 0.0093 J 0.012 J 0.011 J 0.016 J < 0.0062 U 0.021 J 0.0079 J 0.0074 J 0.03 J 0.026 J 0.022 J < 1 U < 1 U

070914060 PB101 07/09/2014 < 0.0067 U < 0.0071 U < 0.0066 U < 0.007 U < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U < 0.0029 U 0.0048 J < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 0.98 U < 0.98 U

101614029 PB101 10/16/2014 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U 0.0051 J < 0.0029 U < 0.0036 U 0.0067 J < 0.0088 U 0.0091 J < 0.97 UJ < 0.97 U

012815022 PB101 01/28/2015 < 0.0089 U < 0.0038 U < 0.0033 U < 0.0027 U < 0.0035 U < 0.0028 U < 0.0054 U < 0.0056 U < 0.0052 U < 0.0067 U < 0.0036 U 0.0086 J < 0.0031 U < 0.0038 U 0.0088 J 0.013 J 0.012 J < 0.96 U < 0.96 U

041515035 PB101 04/15/2015 < 0.0028 U < 0.0046 U < 0.0046 U < 0.0037 U < 0.0048 U < 0.0041 UJ < 0.0049 U < 0.0032 U < 0.0052 U 0.0047 J < 0.0051 UJ < 0.0087 U < 0.0037 U < 0.0033 U < 0.0055 U < 0.0093 U < 0.0071 U < 1 U < 1 U

071315004 PB101 07/13/2015 0.0075 J < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 U < 0.005 U < 0.0033 UJ < 0.0053 U < 0.004 U < 0.0052 U 0.012 J 0.007 J < 0.0033 U 0.0074 J 0.037 J 0.0089 J < 4.1 U < 4.1 U

102715015 PB101 10/27/2015 0.0041 J < 0.0045 U < 0.0045 U < 0.0036 U < 0.0046 UJ < 0.004 U < 0.0048 U < 0.0032 U < 0.0051 U 0.0043 J < 0.005 U < 0.0085 U < 0.0036 U < 0.0032 UJ 0.0067 J 0.012 J < 0.0069 U < 0.71 U < 0.73 U

020116138 PB101 02/01/2016 < 0.011 U < 0.0054 U < 0.0054 U < 0.0044 U < 0.0056 U < 0.0048 U < 0.0058 U < 0.0038 U < 0.0061 U < 0.0046 U < 0.006 U < 0.01 U < 0.0044 U < 0.0039 U < 0.01 U < 0.0083 U < 0.0084 U < 0.73 U < 0.75 U

041316033 PB101 04/13/2016 0.0055 J < 0.0055 U < 0.0055 U < 0.0045 U < 0.0057 U < 0.0049 UJ < 0.0059 UJ < 0.0042 UJ < 0.0063 UJ 0.01 J < 0.0062 UJ < 0.01 U < 0.0045 U < 0.004 UJ 0.0092 J 0.015 J < 0.0091 U < 0.73 U < 0.75 U

070716018 PB101 07/07/2016 < 0.0027 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.005 U < 0.0043 U < 0.0052 U 0.0044 J < 0.0055 U 0.0063 J < 0.0054 U 0.013 J < 0.0039 U < 0.0035 U 0.0045 J 0.009 J < 0.015 U < 0.73 U < 0.75 U

Page 4: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 4 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

020514028 (N) PB102 (N) 02/05/2014 < 0.0071 U < 0.0076 U < 0.007 U < 0.0074 U < 0.0059 U < 0.0096 U < 0.0068 U < 0.0041 U < 0.0031 U < 0.0034 U < 0.0065 U < 0.0079 U < 0.0073 U < 0.0054 U < 0.0089 U < 0.0091 U < 0.0084 U < 1.1 U < 1.1 U

042314016 PB102 04/23/2014 < 0.0066 U < 0.007 U < 0.0065 U < 0.0069 U < 0.0055 U < 0.0089 U < 0.0063 U < 0.0038 U < 0.0029 U < 0.0031 U < 0.006 U < 0.0074 U < 0.0068 U < 0.005 U < 0.0083 U < 0.0085 U < 0.0078 U < 1 U < 1 U

070914067 PB102 07/09/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

101714031 PB102 10/17/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.005 U < 0.0029 U < 0.0036 U < 0.006 U < 0.0087 U < 0.0058 U < 0.98 U < 0.98 U

012815020 PB102 01/28/2015 < 0.0094 U < 0.0041 U < 0.0035 U < 0.0028 U < 0.0037 U < 0.003 U 0.0075 J < 0.0059 U < 0.0055 U 0.0075 J < 0.0038 U 0.0091 J < 0.0033 U < 0.0041 U 0.012 J < 0.0098 U 0.014 J < 1 U < 1 U

041415018 PB102 04/14/2015 < 0.0044 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 UJ < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 UJ < 0.009 U < 0.0039 U < 0.0034 U < 0.0044 U < 0.0085 U 0.0088 J < 1 U < 1 U

071315003 PB102 07/13/2015 0.031 J 0.0085 J < 0.0055 U 0.0056 J < 0.0057 U < 0.0049 U < 0.0059 U < 0.0039 UJ < 0.0063 U < 0.0047 U < 0.0062 U < 0.01 U 0.0066 J < 0.004 U 0.072 J 0.019 J < 0.0085 U < 1.1 U < 1.1 U

102815024 PB102 10/28/2015 0.0043 J < 0.0047 UJ < 0.0047 UJ < 0.0038 UJ < 0.0048 UJ < 0.0042 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ < 0.004 UJ < 0.0052 UJ < 0.0089 UJ < 0.0038 UJ < 0.0034 UJ < 0.0043 UJ 0.009 J 0.0073 J < 0.76 U < 0.78 U

020116137 PB102 02/01/2016 < 0.0065 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 U < 0.0048 U < 0.0057 U < 0.0038 U < 0.0061 U < 0.0046 U < 0.006 U < 0.01 U < 0.0043 U 0.0041 J < 0.013 U < 0.0082 U 0.0084 J < 0.73 UJ < 0.75 UJ

041316043 PB102 04/13/2016 0.01 J 0.031 J < 0.0053 U < 0.0043 U < 0.0055 U < 0.0047 U < 0.0056 U < 0.0037 U < 0.006 U < 0.0045 U < 0.0059 U < 0.01 U 0.0077 J < 0.0038 U 0.19 0.017 J < 0.0082 U < 0.81 U < 0.83 U

070716011 PB102 07/07/2016 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U 0.011 J < 0.004 U < 0.0035 U 0.0054 J < 0.0076 U < 0.012 U < 0.76 U < 0.78 U

041316042 PB103 04/13/2016 < 0.0025 U < 0.0046 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.0041 U < 0.0049 U < 0.0032 U < 0.0052 U < 0.0039 U < 0.0051 U < 0.0086 U < 0.0037 U < 0.0033 U 0.0044 J < 0.007 U < 0.0071 U < 0.77 U < 0.79 U

070716021 PB103 07/07/2016 0.0091 J 0.0058 J < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U 0.022 J 0.015 J < 0.004 U < 0.0036 U 0.022 J 0.019 J < 0.015 U < 0.76 U < 0.78 U

041316038 PB104 04/13/2016 0.0028 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 U < 0.0089 U < 0.0038 U < 0.0034 U 0.0063 J < 0.0072 U < 0.0073 U < 0.76 U < 0.78 U

070716024 PB104 07/07/2016 0.013 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U 0.0042 J < 0.0052 U < 0.0089 U < 0.0038 U < 0.0034 U 0.0085 J 0.021 J < 0.0085 U < 0.75 U < 0.77 U

041416046 PC101 04/14/2016 < 0.0043 U < 0.0049 U 0.0084 J 0.0047 J < 0.0051 U 0.0094 J+ 0.018 J+ < 0.044 UJ 0.03 J+ 0.055 0.061 J+ 0.019 J < 0.004 U 0.066 J+ 0.028 J 0.016 J 0.031 J < 0.76 U < 0.78 U

070616004 PC101 07/06/2016 0.012 J 0.033 J 0.12 < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U 0.0071 J < 0.0052 U 0.037 J 0.0097 J < 0.0034 U 0.027 J 0.018 J 0.041 J < 0.72 U < 0.74 U

041416050 PC103 04/14/2016 0.0043 J < 0.0054 U < 0.0054 U < 0.0044 U < 0.0056 U < 0.0048 U < 0.0058 U 0.0044 J < 0.0061 U < 0.0047 U < 0.006 U < 0.01 U < 0.0044 U < 0.0039 U < 0.0049 U 0.0099 J < 0.0084 U < 0.74 U < 0.76 U

070616002 PC103 07/06/2016 0.014 J < 0.0052 U < 0.0052 U < 0.0043 U < 0.0054 U < 0.0047 U < 0.0056 U < 0.0037 U < 0.0059 U 0.0055 J < 0.0059 U < 0.0099 U < 0.0043 U < 0.0038 U 0.037 J 0.018 J < 0.0081 U < 0.76 U < 0.78 U

041416051 PC103S 04/14/2016 < 0.0027 U < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ < 0.0088 U < 0.0055 UJ < 0.0092 U < 0.004 U < 0.0035 UJ < 0.0044 U < 0.0075 U < 0.0075 U < 0.75 U < 0.77 U

070616001 PC103S 07/06/2016 0.0051 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U 0.012 J 0.0082 J < 0.0077 U < 0.71 U < 0.73 UJ

020614034 PCO-MW004 02/06/2014 < 0.0072 U < 0.0076 U < 0.0071 U < 0.0075 U < 0.0059 U < 0.0097 U < 0.0069 U < 0.0042 U < 0.0031 U 0.0046 J < 0.0065 U < 0.008 U < 0.0073 U < 0.0054 U < 0.009 U < 0.0092 U < 0.0085 U -- --

042414025 PCO-MW004 04/24/2014 < 0.0067 U < 0.0071 U 0.0071 J < 0.007 U 0.007 J < 0.009 U 0.0098 J 0.0081 J 0.01 J 0.013 J < 0.0061 U 0.022 J < 0.0068 U 0.0063 J < 0.0084 U 0.02 J 0.019 J < 1 U < 1 U

071114085 PCO-MW004 07/11/2014 < 0.0066 U < 0.007 U < 0.0065 U < 0.0069 U < 0.0055 U < 0.0089 U < 0.0063 U < 0.0038 U < 0.0029 U < 0.0031 U < 0.006 U < 0.0074 U < 0.0068 U < 0.005 U < 0.0083 U < 0.0085 U < 0.0078 U < 0.98 U < 0.98 U

101414009 PCO-MW004 10/14/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U 0.0064 J < 0.0034 U 0.012 J 0.003 J < 0.0036 U < 0.006 U 0.015 J 0.014 J < 1 U < 1 U

012715014 (N) PCO-MW004 (N) 01/27/2015 < 0.008 U 0.0041 J < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U 0.0053 J < 0.005 U < 0.0047 U 0.0092 J < 0.0033 UJ 0.013 J 0.0039 J < 0.0034 U 0.017 J 0.041 J < 0.0086 U < 0.97 U < 0.97 U

041415019 PCO-MW004 04/14/2015 < 0.0027 U < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U < 0.0043 UJ < 0.0052 U < 0.0034 U < 0.0055 U < 0.0042 U < 0.0055 UJ < 0.0092 U < 0.004 U < 0.0035 U < 0.0044 U < 0.0084 U < 0.0075 U < 1 U < 1 U

071515030 PCO-MW004 07/15/2015 < 0.003 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 U < 0.0048 U < 0.0057 U < 0.012 UJ < 0.0061 U < 0.0046 U 0.0071 J < 0.01 U < 0.0043 U 0.0072 J < 0.0049 U < 0.0082 U 0.01 J < 1.1 UJ < 1.1 UJ

102715022 PCO-MW004 10/27/2015 0.0054 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U 0.0048 J+ < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 UJ 0.0062 J 0.0083 J+ < 0.0076 U < 0.72 U < 0.74 U

012816120 PCO-MW004 01/28/2016 0.0032 J < 0.0052 U < 0.0052 U < 0.0043 U < 0.0054 U < 0.0047 U < 0.0056 U 0.0039 J < 0.0059 U < 0.0045 U < 0.0059 U < 0.0099 U < 0.0043 U < 0.0038 U < 0.022 U < 0.0081 U < 0.0085 U < 0.76 UJ < 0.78 UJ

041216012 PCO-MW004 04/12/2016 0.0035 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 U 0.0084 J < 0.0049 U < 0.0054 U 0.0077 J < 0.0053 U < 0.009 U < 0.0038 U < 0.0034 U < 0.0096 U 0.011 J 0.0098 J < 0.74 U < 0.76 U

020614035 PCO-MW005 02/06/2014 < 0.0073 U < 0.0078 U < 0.0072 U < 0.0076 U < 0.0061 U < 0.0099 U < 0.007 U < 0.0043 U < 0.0032 U < 0.0035 U < 0.0067 U < 0.0082 U < 0.0075 U < 0.0055 U < 0.0092 U < 0.0094 U < 0.0086 U -- --

042414027 PCO-MW005 04/24/2014 < 0.0072 U < 0.0077 U < 0.0071 U < 0.0076 U < 0.006 U < 0.0098 U < 0.0069 U < 0.0042 U < 0.0031 U < 0.0034 U < 0.0066 U < 0.0081 U < 0.0074 U < 0.0055 U < 0.0091 U < 0.0093 U < 0.0086 U < 1 UJ < 1 UJ

070714048 PCO-MW005 07/07/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

101514012 PCO-MW005 10/15/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U < 0.005 U < 0.0029 U < 0.0035 U < 0.006 U < 0.0086 U < 0.0058 U < 0.98 U < 0.98 U

012715017 PCO-MW005 01/27/2015 < 0.0079 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0031 U < 0.0025 U 0.011 J 0.0063 J 0.0047 J 0.013 J < 0.0032 UJ 0.011 J < 0.0028 U 0.0047 J < 0.0057 U 0.025 J < 0.012 U < 0.97 U < 0.97 U

041515030 PCO-MW005 04/15/2015 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 UJ < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 UJ < 0.0094 U < 0.004 U < 0.0036 U < 0.0045 U < 0.0077 U < 0.0077 U < 1 U < 1 U

071515032 PCO-MW005 07/15/2015 < 0.0029 U < 0.0052 U < 0.0052 U < 0.0043 U < 0.0054 U < 0.0047 U < 0.0056 U < 0.0037 UJ < 0.0059 U 0.033 J < 0.0059 U < 0.0099 U < 0.0043 U < 0.0038 U < 0.0068 U 0.012 J < 0.0099 U < 1 U < 1.1 U

102815025 PCO-MW005 10/28/2015 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 UJ < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 U < 0.0045 U < 0.0076 U < 0.0076 U < 0.76 U < 0.78 U

012816121 PCO-MW005 01/28/2016 0.003 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U < 0.0089 U < 0.0074 U < 0.0074 U < 0.76 U < 0.78 UJ

041216015 PCO-MW005 04/12/2016 0.0045 J < 0.0045 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.004 UJ 0.0052 J+ < 0.0032 UJ < 0.0051 UJ 0.0039 J < 0.0051 UJ < 0.0085 U < 0.0037 U < 0.0033 UJ < 0.015 U < 0.007 U < 0.007 U < 0.75 U < 0.77 U

Page 5: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 5 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

020514032 PCO-MW006 02/05/2014 < 0.0073 U < 0.0078 U < 0.0072 U < 0.0076 U < 0.0061 U < 0.0099 U < 0.007 U < 0.0043 U < 0.0032 U < 0.0035 U < 0.0067 U < 0.0082 U < 0.0075 U < 0.0055 U < 0.0092 U < 0.0094 U < 0.0086 U < 1.1 U < 1.1 U

042414029 PCO-MW006 04/24/2014 < 0.0069 U < 0.0073 U < 0.0068 U < 0.0072 U < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 1 U < 1 U

070714047 PCO-MW006 07/07/2014 < 0.0069 U < 0.0074 U < 0.0068 U < 0.0073 U < 0.0058 U < 0.0094 U < 0.0067 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0078 U < 0.0071 U < 0.0053 U < 0.0088 U < 0.0089 U < 0.0082 U < 1 U < 1 U

101714034 PCO-MW006 10/17/2014 < 0.0077 U < 0.0034 U < 0.0029 U < 0.0023 U < 0.0031 U < 0.0025 U < 0.0047 U < 0.0049 U < 0.0046 U < 0.0059 U < 0.0032 U < 0.0047 U < 0.0027 U < 0.0034 U < 0.0056 U < 0.0081 U < 0.0055 U < 0.97 U < 0.97 U

012815021 PCO-MW006 01/28/2015 < 0.008 U < 0.0035 U < 0.003 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.0051 U < 0.0047 U < 0.0061 U < 0.0033 U < 0.0049 U < 0.0028 U < 0.0035 U < 0.0059 U 0.017 J 0.0057 J < 0.97 U < 0.97 U

041615039 PCO-MW006 04/16/2015 < 0.0025 U < 0.0046 U < 0.0046 U < 0.0037 U < 0.0048 U < 0.0041 UJ < 0.0049 U < 0.0032 U < 0.0052 U < 0.0039 U < 0.0051 UJ < 0.0087 U < 0.0037 U < 0.0033 U < 0.0042 U < 0.0071 U < 0.0071 U < 0.97 U < 0.97 U

071515033 PCO-MW006 07/15/2015 0.009 J < 0.0054 U < 0.0054 U < 0.0044 U < 0.0056 U < 0.0048 U < 0.0058 U < 0.0038 UJ < 0.0061 U 0.034 J < 0.006 U < 0.01 U < 0.0044 U < 0.0039 U < 0.008 U 0.012 J < 0.0084 U < 1.1 U < 1.1 U

102815029 PCO-MW006 10/28/2015 < 0.0027 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 UJ < 0.0042 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ < 0.004 U < 0.0052 UJ < 0.0089 U < 0.0038 U < 0.0034 UJ < 0.0091 U < 0.0072 U < 0.0073 U < 0.74 UJ < 0.76 UJ

012816116 PCO-MW006 01/28/2016 0.0036 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.017 U < 0.0077 U < 0.0077 U < 0.78 U < 0.8 U

041216019 PCO-MW006 04/12/2016 0.003 J < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 U < 0.0055 U < 0.0042 U < 0.0055 U 0.0098 J < 0.004 U < 0.0035 U 0.0074 J < 0.0075 U 0.015 J < 0.76 U < 0.78 U

042414026 PCO-MW015 04/24/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

071014076 PCO-MW015 07/10/2014 < 0.0066 U < 0.007 U < 0.0065 U < 0.0069 U < 0.0055 U < 0.0089 U < 0.0063 U < 0.0038 U < 0.0029 U < 0.0031 U < 0.006 U < 0.0074 U < 0.0068 U < 0.005 U < 0.0083 U < 0.0085 U < 0.0078 U < 0.97 U < 0.97 U

101714035 PCO-MW015 10/17/2014 < 0.008 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.005 U < 0.0047 U < 0.006 U < 0.0033 U < 0.0048 U < 0.0028 U < 0.0034 U < 0.0058 U < 0.0084 U < 0.0056 U < 1 U < 1 U

012815026 PCO-MW015 01/28/2015 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U 0.0051 J < 0.0029 U < 0.0036 U < 0.012 U < 0.0087 U 0.0065 J < 1 U < 1 U

041415016 (N) PCO-MW015 (N) 04/14/2015 0.0057 J < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 UJ 0.0069 J 0.0065 J < 0.0053 U < 0.004 U < 0.0052 UJ < 0.0088 U < 0.0038 U 0.0055 J 0.0044 J 0.01 J 0.008 J < 0.98 U < 0.98 U

071515031 PCO-MW015 07/15/2015 < 0.0027 U < 0.0049 U < 0.0048 U 0.032 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 UJ < 0.0055 U 0.031 J < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U < 0.0055 U < 0.0075 U < 0.0075 U < 1 UJ < 1 UJ

102815028 PCO-MW015 10/28/2015 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ < 0.0042 U < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 UJ < 0.0089 U 0.0082 J < 0.0076 U < 0.8 U < 0.82 U

012816114 PCO-MW015 01/28/2016 0.0083 J < 0.0049 U < 0.0049 U 0.0051 J < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U < 0.02 U 0.0094 J < 0.013 U < 0.71 U < 0.73 U

041216023 PCO-MW015 04/12/2016 < 0.0025 U < 0.0045 U < 0.0045 U 0.0095 J < 0.0047 U < 0.004 U < 0.0048 U 0.0034 J < 0.0051 U < 0.0039 U < 0.0051 U < 0.0085 U < 0.0037 U < 0.0033 U < 0.0041 U < 0.007 U 0.011 J < 0.77 U < 0.79 U

042514043 PCO-MW018 04/25/2014 < 0.0069 U < 0.0074 U < 0.0068 U < 0.0073 U < 0.0058 U < 0.0094 U < 0.0067 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0078 U < 0.0071 U < 0.0053 U < 0.0088 U < 0.0089 U < 0.0082 U < 1 U < 1 U

071114086 (N) PCO-MW018 (N) 07/11/2014 < 0.0066 U < 0.007 U < 0.0065 U 0.017 J 0.011 J 0.012 J 0.019 J 0.017 J 0.018 J 0.017 J 0.0068 J 0.015 J < 0.0068 U 0.015 J < 0.0083 U < 0.0085 U 0.016 J < 0.99 U < 0.99 U

101614022 PCO-MW018 10/16/2014 < 0.008 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U 0.0052 J < 0.005 U < 0.0047 U < 0.006 U < 0.0033 U 0.0066 J < 0.0028 U < 0.0034 U < 0.0058 U < 0.0084 U 0.006 J < 0.96 UJ < 0.96 U

012915036 PCO-MW018 01/29/2015 < 0.008 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U 0.0055 J < 0.005 U < 0.0047 U 0.013 J < 0.0033 U 0.0096 J < 0.0028 U < 0.0034 U < 0.0058 U 0.021 J 0.01 J < 1 U < 1 U

041615043 PCO-MW018 04/16/2015 < 0.018 U 0.015 J < 0.0048 U 0.02 J 0.041 J 0.022 J 0.044 J 0.017 J 0.015 J 0.043 J < 0.0054 UJ 0.1 < 0.016 U 0.012 J < 0.049 U 0.099 0.09 < 1 U < 1 U

071515034 PCO-MW018 07/15/2015 < 0.0027 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 UJ < 0.0055 U 0.031 J < 0.0054 U < 0.0091 U < 0.0039 U < 0.0035 U < 0.0058 U < 0.0074 U < 0.0075 U < 0.99 U < 0.99 U

102615005 PCO-MW018 10/26/2015 < 0.003 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U < 0.0052 U 0.01 J < 0.0074 U < 0.72 U < 0.74 U

012916125 PCO-MW018 01/29/2016 < 0.0029 U < 0.0052 U < 0.0051 U < 0.0042 U < 0.0053 U 0.0053 J < 0.0087 U 0.0053 J < 0.0059 U < 0.0065 U < 0.0058 U < 0.0098 U < 0.0042 U < 0.0037 U < 0.0062 U < 0.008 U < 0.008 U < 0.76 U < 0.78 U

041216024 PCO-MW018 04/12/2016 < 0.0027 U < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U < 0.0043 U < 0.0052 U 0.004 J < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U < 0.0044 U < 0.0075 U 0.012 J < 0.75 U < 0.77 U

041316032 PE101 04/13/2016 0.0037 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 UJ < 0.026 UJ < 0.0033 UJ < 0.017 UJ 0.038 J < 0.0053 UJ 0.051 < 0.0038 U < 0.0034 UJ < 0.0043 U 0.028 J 0.06 < 0.78 U < 0.8 U

070616007/070616008 PE101 (N) 07/06/2016 0.006 J < 0.0049 U < 0.0048 U < 0.004 U < 0.005 U 0.0049 J 0.013 J 0.0076 J < 0.0055 U 0.016 J < 0.0055 U 0.027 J < 0.004 U < 0.0035 U 0.0095 J 0.023 J 0.026 J < 0.72 U < 0.74 U

041316034 PE102 04/13/2016 0.0032 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ 0.0065 J < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 UJ < 0.0045 U 0.0083 J < 0.01 U < 0.76 U < 0.78 U

070616009 PE102 07/06/2016 0.0036 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U 0.0083 J < 0.0052 U 0.0098 J < 0.0038 U < 0.0034 U 0.013 J 0.013 J 0.014 J < 0.71 U < 0.73 U

020314014 PK101 02/03/2014 < 0.0045 U < 0.0053 U < 0.0042 U < 0.0067 U < 0.0042 U < 0.0033 U < 0.004 U < 0.0056 U < 0.0051 U < 0.0041 U < 0.0037 U < 0.0051 U < 0.0056 U < 0.0055 U < 0.0056 U < 0.0094 U < 0.0055 U < 0.76 U < 1.2 U

042114001 PK101 04/21/2014 < 0.0069 U < 0.0073 U < 0.0068 U < 0.0072 U < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U < 1 U < 1 U

070714046 PK101 07/07/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U 0.013 J < 0.0088 U < 0.008 U < 1.1 U < 1.1 U

101514015 PK101 10/15/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0053 U < 0.0029 U < 0.0036 U < 0.006 U < 0.0087 U < 0.0071 U < 0.97 U < 0.97 U

012615001 PK101 01/26/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 UJ < 0.0051 U < 0.0029 U < 0.0036 U 0.014 J 0.0093 J < 0.0059 U < 0.99 U < 0.99 U

041315005 PK101 04/13/2015 0.0057 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 UJ < 0.0053 U 0.0042 J < 0.0056 U < 0.0042 U < 0.0056 UJ 0.0095 J < 0.004 U < 0.0036 U 0.0056 J < 0.0077 U < 0.0077 U < 0.99 U < 0.99 U

071415009 PK101 07/14/2015 0.0039 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 UJ < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U 0.0065 J 0.0074 J < 0.0074 U < 0.99 UJ < 0.99 UJ

102615003 PK101 10/26/2015 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.0045 U < 0.0077 U < 0.0077 U < 0.76 U < 0.78 U

012916132 (N) PK101 (N) 01/29/2016 < 0.0048 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U 0.0062 J < 0.0053 U < 0.0042 U < 0.0052 U < 0.0089 U < 0.0038 U 0.0036 J < 0.0075 U < 0.0081 U < 0.0073 U < 0.74 U < 0.76 U

041116008 PK101 04/11/2016 0.01 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U 0.048 < 0.0074 U < 0.0074 U < 0.73 U < 0.75 U

Page 6: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 6 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

020314016 PK102 02/03/2014 < 0.0042 U < 0.0049 U < 0.0039 U < 0.0062 U < 0.0039 U < 0.0031 U < 0.0037 U < 0.0052 U < 0.0047 U < 0.0038 U < 0.0035 U < 0.0048 U < 0.0052 U < 0.0051 U < 0.0052 U < 0.0088 U < 0.0051 U < 0.75 U < 1.1 U

042314023 PK102 04/23/2014 0.038 J 0.0093 J < 0.0068 U 0.0081 J 0.013 J 0.013 J 0.012 J 0.023 J 0.012 J 0.028 J < 0.0063 U 0.025 J 0.0076 J 0.0075 J 0.036 J 0.05 J 0.034 J < 1 U < 1 U

071014071 PK102 07/10/2014 < 0.0066 U < 0.007 U < 0.0065 U < 0.0069 U < 0.0055 U < 0.0089 U < 0.0063 U < 0.0038 U < 0.0029 U 0.0033 J < 0.006 U < 0.0074 U < 0.0068 U < 0.005 U < 0.0083 U < 0.0085 U < 0.0078 U < 0.98 U < 0.98 U

101714032 PK102 10/17/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U < 0.005 U < 0.0029 U < 0.0035 U < 0.006 U < 0.0086 U < 0.0058 U < 0.98 U < 0.98 U

012615003 PK102 01/26/2015 < 0.0082 U 0.0052 J < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U < 0.005 U 0.0056 J < 0.0035 U 0.016 J 0.018 J < 0.0058 U < 0.99 U < 0.99 U

041415010 PK102 04/14/2015 < 0.0038 U < 0.0045 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.004 UJ 0.013 J 0.004 J < 0.0051 U 0.0098 J 0.14 J 0.013 J < 0.0037 U 0.028 J < 0.005 U < 0.011 U 0.013 J < 1 U < 1 U

071415013 PK102 07/14/2015 0.0036 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 UJ < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U < 0.0045 U 0.012 J < 0.0076 U < 0.98 UJ < 0.98 UJ

102815039 PK102 10/28/2015 0.0032 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ < 0.0042 UJ < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 UJ < 0.0045 U < 0.0076 U < 0.0076 UJ < 0.71 U < 0.72 U

012916134 PK102 01/29/2016 < 0.0069 U < 0.0056 U < 0.0056 U < 0.0045 U < 0.0058 U < 0.005 U < 0.006 U 0.0045 J < 0.0063 U < 0.0089 U < 0.0062 U < 0.011 U < 0.0045 U < 0.004 U < 0.0094 U < 0.025 U < 0.0086 U < 0.73 U < 0.75 U

041116009 PK102 04/11/2016 0.0029 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.005 U < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ < 0.0041 U < 0.0054 UJ < 0.0091 U < 0.0039 U < 0.0035 UJ < 0.0044 U 0.0078 J < 0.0075 U < 0.76 U < 0.78 U

020314015 PK103 02/03/2014 < 0.0045 U < 0.0053 U < 0.0042 U < 0.0068 U 0.0046 J < 0.0034 U < 0.004 U < 0.0057 U < 0.0051 U 0.0082 J < 0.0038 U 0.0087 J < 0.0056 U < 0.0055 U 0.014 J < 0.0095 U 0.016 J < 0.76 U < 1.2 U

042114003 PK103 04/21/2014 < 0.0068 U < 0.0073 U < 0.0067 U 0.014 J < 0.0056 U < 0.0092 U < 0.0065 U 0.0053 J 0.0057 J 0.0078 J < 0.0062 U 0.012 J < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U 0.016 J < 1 U < 1 U

070714045 PK103 07/07/2014 < 0.0067 U < 0.0072 U < 0.0066 U 0.014 J < 0.0056 U < 0.0091 U < 0.0065 U 0.0048 J 0.0037 J 0.0056 J < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U 0.0081 J < 1 U < 1 U

102314046 PK103 10/23/2014 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U < 0.0061 U < 0.0088 U < 0.0059 U < 0.97 U < 0.97 U

012615004 PK103 01/26/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U 0.011 J 0.016 J < 0.0062 U < 0.99 U < 0.99 U

041315006 PK103 04/13/2015 0.0039 J < 0.005 U 0.01 J 0.01 J 0.017 J 0.0084 J 0.021 J 0.013 J 0.0084 J 0.023 J < 0.0056 UJ 0.033 J 0.0041 J 0.0091 J 0.0076 J 0.017 J 0.032 J < 1 U < 1.1 U

071415015 PK103 07/14/2015 < 0.0057 U < 0.0047 U < 0.0047 U 0.0053 J < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 UJ < 0.0053 U < 0.004 U < 0.0052 U 0.0091 J < 0.0038 U < 0.0034 U < 0.011 U 0.01 J < 0.015 U < 0.96 UJ < 0.96 UJ

102615004 PK103 10/26/2015 < 0.0027 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.005 U 0.0045 J 0.006 J < 0.0034 U < 0.0055 U 0.0086 J < 0.0054 U 0.0096 J < 0.0039 U < 0.0035 U < 0.0044 U < 0.0074 U 0.0098 J < 0.77 U < 0.79 U

012916135 PK103 01/29/2016 < 0.0028 U < 0.005 U < 0.0049 U 0.0061 J 0.0071 J 0.0086 J < 0.014 U 0.0068 J < 0.0056 U < 0.012 U < 0.0056 U 0.03 J < 0.004 U < 0.0036 U < 0.0046 U < 0.024 U 0.027 J < 0.73 U < 0.75 U

041116006 (N) PK103 (N) 04/11/2016 < 0.0026 U < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 U < 0.005 U < 0.0033 U < 0.0053 U 0.0056 J < 0.0052 U < 0.0088 U < 0.0038 U < 0.0033 U < 0.0042 U 0.013 J < 0.0072 U < 0.74 U < 0.76 U

020314012 (N) PK104 (N) 02/03/2014 < 0.0044 U < 0.0052 U < 0.0042 U < 0.0066 U 0.0071 J < 0.0033 U 0.01 J 0.0095 J 0.0096 J 0.013 J < 0.0037 U 0.019 J < 0.0055 U 0.0066 J 0.011 J 0.012 J 0.022 J < 0.72 U < 1.1 U

042114002 PK104 04/21/2014 0.014 J < 0.0074 U 0.044 J 0.01 J 0.0088 J < 0.0094 U 0.0068 J 0.0074 J 0.011 J 0.012 J < 0.0063 U 0.017 J 0.032 J 0.006 J 0.33 J 0.037 J 0.016 J < 1 U < 1 U

070814055 (N) PK104 (N) 07/08/2014 0.0073 J < 0.0068 U 0.013 J < 0.0067 U 0.0077 J 0.011 J 0.0085 J 0.012 J 0.013 J 0.013 J < 0.0059 U 0.014 J 0.008 J 0.0078 J 0.053 0.015 J 0.017 J < 0.98 U < 0.98 U

101714033 PK104 10/17/2014 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.005 U < 0.0029 U < 0.0036 U 0.01 J < 0.0087 U < 0.0058 U < 0.98 U < 0.98 U

012615002 PK104 01/26/2015 < 0.0085 U < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U 0.011 J < 0.003 U < 0.0037 U 0.011 J 0.015 J < 0.012 U < 0.97 U < 0.97 U

041415008 PK104 04/14/2015 0.02 J 0.0094 J < 0.0045 U 0.0054 J < 0.0047 U < 0.004 UJ 0.0067 J 0.0037 J < 0.0051 U 0.0056 J < 0.0051 UJ 0.014 J 0.0084 J < 0.0033 U 0.044 J 0.029 J 0.016 J < 0.99 U < 0.99 U

071415007 PK104 07/14/2015 0.0045 J < 0.0046 U 0.0066 J 0.0064 J < 0.0048 U 0.0067 J < 0.011 U < 0.0071 UJ 0.0062 J < 0.014 U < 0.0051 U 0.015 J 0.017 J < 0.0061 U 0.0052 J 0.037 J 0.015 J < 1 U < 1.1 U

102815040 PK104 10/28/2015 < 0.0026 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 UJ < 0.0042 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ < 0.004 U < 0.0052 UJ < 0.0089 U < 0.0038 U < 0.0034 UJ < 0.0043 U < 0.0072 U < 0.0073 U < 0.71 U < 0.72 U

012916131 PK104 01/29/2016 < 0.0032 U 0.0054 J < 0.005 U 0.018 J 0.12 0.12 0.2 0.089 0.078 0.18 0.02 J 0.35 0.0077 J 0.07 < 0.006 U 0.18 0.28 < 0.76 U < 0.78 U

041116005 PK104 04/11/2016 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U 0.005 J+ < 0.0053 UJ < 0.0047 UJ < 0.0056 UJ < 0.0042 U < 0.0056 UJ < 0.0094 U < 0.004 U < 0.0036 UJ < 0.0045 U < 0.0077 U < 0.0077 U < 0.71 U < 0.73 U

013014001 PO101 01/30/2014 0.0066 J < 0.0051 U < 0.004 U < 0.0064 U < 0.004 U < 0.0032 U < 0.0038 U < 0.0054 U < 0.0049 U < 0.0039 U < 0.0036 U < 0.0049 U < 0.0053 U < 0.0052 U 0.0087 J < 0.009 U < 0.0053 U < 0.72 U < 1.1 U

042414030 (N) PO101 (N) 04/24/2014 < 0.0064 U < 0.0068 U < 0.0063 U < 0.0067 U < 0.0053 U < 0.0087 U < 0.0062 U 0.0056 J 0.0045 J 0.0055 J < 0.0059 U < 0.0072 U < 0.0066 U < 0.0049 U < 0.0081 U < 0.0083 U < 0.0076 U < 0.97 U < 0.97 U

071014072 (N) PO101 (N) 07/10/2014 < 0.0069 U < 0.0073 U < 0.0068 U < 0.0072 U < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.0087 U < 0.0089 U < 0.0081 U -- --

101514013 (N) PO101 (N) 10/15/2014 < 0.008 U < 0.0034 U < 0.0029 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.005 U < 0.0047 U < 0.006 U < 0.0033 U < 0.0048 U < 0.0028 U < 0.0034 U 0.0085 J < 0.0084 U < 0.0056 U < 0.99 UJ < 0.99 UJ

012815023 PO101 01/28/2015 < 0.0082 U 0.004 J < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U 0.0078 J < 0.0033 U 0.0089 J 0.0029 J < 0.0035 U < 0.014 U 0.046 J 0.01 J < 1 U < 1 U

041415013 PO101 04/14/2015 0.0058 J < 0.0046 U < 0.0046 U < 0.0037 U < 0.0048 U < 0.0041 UJ 0.0057 J 0.0063 J < 0.0052 U 0.0055 J < 0.0051 UJ 0.011 J 0.0042 J 0.0044 J 0.0072 J 0.018 J 0.011 J < 1 U < 1 U

071415019 (N) PO101 (N) 07/14/2015 < 0.0035 U < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 U < 0.005 U 0.0079 J < 0.0053 U < 0.004 U < 0.0052 U < 0.0088 U < 0.0038 U 0.0063 J < 0.0049 U 0.0075 J < 0.0072 U < 0.97 U < 0.97 U

102815027 PO101 10/28/2015 < 0.0026 U < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 UJ < 0.0042 UJ < 0.005 UJ < 0.0033 UJ < 0.0053 UJ < 0.004 U < 0.0052 UJ < 0.0089 U < 0.0038 U < 0.0034 UJ < 0.0073 U < 0.0072 U < 0.0073 U < 0.76 U < 0.78 U

012816115 PO101 01/28/2016 0.029 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0033 U < 0.0054 U 0.0049 J < 0.0053 U < 0.009 U 0.0073 J < 0.0034 U < 0.013 U 0.026 J < 0.0094 U < 0.73 U < 0.75 U

041216016 PO101 04/12/2016 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U 0.0036 J < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U 0.047 J < 0.0076 U 0.011 J < 0.73 U < 0.75 U

Page 7: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 7 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

020414018 PO102 02/04/2014 0.093 0.064 < 0.0074 U 0.0086 J < 0.0062 U < 0.01 U < 0.0072 U < 0.0044 U < 0.0032 U 0.0085 J < 0.0068 U 0.016 J 0.022 J < 0.0057 U 0.39 0.035 J 0.024 J < 0.72 U < 1.1 U

042414032 PO102 04/24/2014 0.023 J 0.027 J 0.012 J 0.021 J 0.017 J 0.02 J 0.017 J 0.0096 J 0.02 J 0.029 J < 0.0062 U 0.027 J 0.011 J 0.0086 J 0.032 J 0.029 J 0.091 < 0.99 U < 0.99 U

071114082 PO102 07/11/2014 0.022 J 0.021 J < 0.0066 U < 0.007 U 0.0079 J < 0.009 U < 0.0064 U < 0.0039 U 0.0063 J 0.0091 J < 0.0061 U 0.0092 J 0.0073 J < 0.0051 U 0.15 J 0.012 J 0.016 J < 0.99 U < 0.99 U

101714036 PO102 10/17/2014 0.032 J 0.032 J 0.0045 J 0.015 J 0.011 J < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U 0.0096 J < 0.0035 U 0.014 J 0.02 J < 0.0037 U 0.041 J 0.053 0.034 J < 0.99 U < 0.99 U

012815029 PO102 01/28/2015 0.089 0.087 0.0093 J 0.074 0.029 J 0.0078 J 0.0089 J < 0.0058 U < 0.0054 U 0.033 J < 0.0037 U 0.06 0.066 0.0042 J 0.092 0.23 0.1 < 1 U < 1 U

041515036 PO102 04/15/2015 0.028 J 0.03 J < 0.0048 U 0.018 J 0.013 J < 0.0042 UJ < 0.0051 U < 0.0034 U < 0.0054 U 0.0086 J < 0.0053 UJ 0.021 J 0.026 J < 0.0034 U 0.028 J 0.061 0.029 J < 0.99 U < 0.99 U

071415017 PO102 07/14/2015 < 0.024 U 0.029 J < 0.0049 U 0.022 J 0.014 J < 0.0044 U < 0.0053 U < 0.0035 UJ < 0.0056 U 0.0086 J < 0.0055 U 0.025 J 0.026 J < 0.0035 U < 0.022 U 0.068 < 0.033 U < 1 U < 1.1 U

102815034 PO102 10/28/2015 0.0043 J < 0.0049 U < 0.0049 U 0.0047 J < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ < 0.0042 U < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 UJ 0.0051 J < 0.0076 U < 0.0076 U < 0.71 U < 0.72 U

012916129 PO102 01/29/2016 < 0.015 U 0.02 J < 0.0049 U 0.015 J 0.012 J 0.007 J < 0.014 U 0.0067 J 0.0066 J < 0.02 U < 0.0056 U 0.027 J 0.017 J 0.0039 J < 0.014 U 0.058 0.034 J < 0.74 U < 0.76 U

041216026 PO102 04/12/2016 0.0058 J 0.01 J < 0.0048 U 0.011 J 0.011 J < 0.0043 U 0.0055 J 0.0055 J < 0.0055 U < 0.0074 U < 0.0055 U 0.016 J 0.011 J < 0.0035 U 0.015 J 0.031 J 0.02 J < 0.73 U < 0.75 U

013114009 PO103 01/31/2014 < 0.0045 U < 0.0053 U < 0.0042 U < 0.0067 U < 0.0042 U < 0.0033 U < 0.004 U < 0.0056 U < 0.0051 U < 0.0041 U < 0.0037 U < 0.0051 U < 0.0056 U < 0.0055 U 0.013 J < 0.0094 U < 0.0055 U < 0.78 U < 1.2 U

042514042 PO103 04/25/2014 < 0.0069 U < 0.0074 U < 0.0068 U < 0.0073 U < 0.0058 U < 0.0094 U < 0.0067 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0078 U < 0.0071 U < 0.0053 U < 0.0088 U < 0.0089 U < 0.0082 U < 1 U < 1 U

070814057 PO103 07/08/2014 < 0.0065 U < 0.007 U < 0.0064 U < 0.0068 U < 0.0054 U < 0.0088 U < 0.0063 U < 0.0038 U < 0.0028 U < 0.0031 U < 0.006 U < 0.0073 U < 0.0067 U < 0.005 U 0.0084 J < 0.0084 U < 0.0077 U < 0.98 U < 0.98 U

102014039 PO103 10/20/2014 < 0.0085 U < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U < 0.0052 U 0.004 J < 0.0037 U < 0.0062 U 0.013 J < 0.006 U < 0.99 U < 0.99 U

012715009 PO103 01/27/2015 < 0.008 U < 0.0035 U < 0.003 U < 0.0024 U < 0.0032 U < 0.0025 U < 0.0049 U < 0.0051 U < 0.0047 U 0.0074 J < 0.0033 UJ 0.0063 J < 0.0028 U < 0.0035 U 0.0067 J 0.027 J < 0.007 U < 0.99 U < 0.99 U

041515027 PO103 04/15/2015 0.0041 J < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 UJ 0.0052 J < 0.0033 U < 0.0053 U 0.0058 J < 0.0052 UJ 0.01 J < 0.0038 U < 0.0033 U 0.0058 J 0.012 J 0.01 J < 1 U < 1 U

071515022 PO103 07/15/2015 < 0.0028 U < 0.005 U < 0.005 U < 0.0041 U < 0.0052 U < 0.0045 U < 0.0054 U < 0.0037 UJ < 0.0057 U < 0.0043 U < 0.0056 U < 0.0095 U < 0.0041 U < 0.0036 U < 0.0046 U 0.0086 J < 0.012 U < 1.1 U < 1.1 U

102715017 PO103 10/27/2015 < 0.0026 UJ < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 U < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 U < 0.0089 U < 0.0038 U < 0.0034 UJ < 0.0043 UJ 0.0077 J+ < 0.0073 U < 0.71 U < 0.73 U

012816119 PO103 01/28/2016 0.0072 J < 0.0048 U < 0.0048 U < 0.0039 U < 0.0049 U < 0.0042 U < 0.0051 U < 0.0034 U < 0.0054 U < 0.0041 U < 0.0053 U < 0.009 U < 0.0039 U < 0.0034 U < 0.013 U < 0.0074 U < 0.0074 U < 0.79 UJ < 0.81 UJ

041216014 PO103 04/12/2016 0.005 J < 0.0049 U < 0.0048 U < 0.004 U 0.0062 J < 0.0043 U < 0.0052 U 0.0035 J < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U < 0.004 U < 0.0035 U 0.0056 J 0.0081 J 0.01 J < 0.78 U < 0.8 U

013114007 PO104 01/31/2014 < 0.0047 U < 0.0055 U < 0.0044 U < 0.007 U < 0.0044 U < 0.0035 U < 0.0041 U < 0.0059 U < 0.0053 U < 0.0042 U < 0.0039 U < 0.0054 U < 0.0058 U < 0.0057 U 0.0082 J < 0.0099 U < 0.0058 U < 0.74 U < 1.1 U

042414034 PO104 04/24/2014 < 0.0071 U < 0.0076 U < 0.007 U 0.0092 J < 0.0059 U < 0.0096 U < 0.0068 U 0.0052 J 0.0055 J 0.0074 J < 0.0065 U 0.011 J < 0.0073 U < 0.0054 U < 0.0089 U 0.01 J 0.01 J < 0.98 U < 0.98 U

071014075 PO104 07/10/2014 < 0.0067 U < 0.0071 U < 0.0066 U < 0.007 U < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 1 U < 1.1 U

102114042 PO104 10/21/2014 < 0.0082 UJ < 0.0035 UJ < 0.003 UJ < 0.0025 UJ < 0.0033 UJ < 0.0026 UJ < 0.005 UJ < 0.0052 UJ < 0.0048 UJ < 0.0062 UJ < 0.0033 UJ < 0.005 UJ < 0.0029 UJ < 0.0035 UJ 0.0064 J- 0.011 J- 0.0091 J- < 2 U < 2 U

012715013 PO104 01/27/2015 < 0.0077 U < 0.0033 U < 0.0028 U < 0.0023 U < 0.0031 U < 0.0024 U < 0.0047 U < 0.0049 U < 0.0045 U 0.0075 J < 0.0031 UJ 0.012 J < 0.0027 U < 0.0033 U 0.0083 J 0.03 J < 0.015 U < 1 U < 1 U

041515022 PO104 04/15/2015 < 0.0037 U < 0.0045 U < 0.0045 U < 0.0036 U 0.006 J < 0.004 UJ < 0.0048 U < 0.0032 U < 0.0051 U < 0.0038 U < 0.005 UJ < 0.0085 U < 0.0036 U < 0.0032 U < 0.0064 U < 0.0092 U < 0.0069 U < 1 U < 1 U

071515027 (N) PO104 (N) 07/15/2015 0.0055 J < 0.0045 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.004 U < 0.0048 U < 0.0032 UJ < 0.0051 U 0.029 J < 0.0051 U < 0.0085 U < 0.0037 U < 0.0033 U < 0.0045 U 0.0081 J < 0.007 U < 0.98 U < 0.98 U

102715019 (N) PO104 (N) 10/27/2015 < 0.0029 UJ < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 U < 0.0047 UJ < 0.0056 UJ < 0.0037 UJ < 0.006 UJ < 0.0045 U < 0.0059 UJ < 0.01 U < 0.0043 U < 0.0038 UJ < 0.0048 UJ < 0.0081 U < 0.0082 U < 0.71 U < 0.72 U

012716107 PO104 01/27/2016 < 0.026 U < 0.0056 U < 0.0056 U < 0.0045 U < 0.0058 U < 0.005 UJ < 0.0061 UJ < 0.0039 UJ < 0.0063 UJ < 0.01 U < 0.0062 UJ < 0.011 U < 0.0045 U < 0.004 UJ < 0.025 U 0.014 J 0.015 J < 0.73 U < 0.75 U

041916060 PO104 04/19/2016 0.0045 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U 0.0044 J < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.0099 U 0.013 J 0.012 J < 0.81 U < 0.83 U

013114006 PO105 01/31/2014 0.0057 J < 0.0055 U < 0.0043 U < 0.0069 U < 0.0044 U < 0.0034 U < 0.0041 U < 0.0058 U < 0.0053 U 0.0053 J < 0.0039 U 0.0062 J < 0.0058 U < 0.0056 U 0.01 J 0.018 J 0.0074 J < 0.76 U < 1.2 U

042514039 PO105 04/25/2014 < 0.0067 U < 0.0071 U < 0.0066 U < 0.007 U < 0.0055 U < 0.009 U < 0.0064 U < 0.0039 U 0.0051 J 0.0059 J < 0.0061 U < 0.0075 U < 0.0068 U < 0.0051 U < 0.0084 U < 0.0086 U < 0.0079 U < 1.1 U < 1.1 U

071114079 PO105 07/11/2014 < 0.0071 U < 0.0076 U < 0.007 U < 0.0074 U < 0.0059 U < 0.0096 U < 0.0068 U < 0.0041 U < 0.0031 U 0.0051 J < 0.0065 U < 0.0079 U < 0.0073 U < 0.0054 U < 0.0089 U < 0.0091 U < 0.0084 U < 1.1 U < 1.1 U

101514016 PO105 10/15/2014 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U < 0.0061 U < 0.0088 U < 0.0087 U < 0.98 U < 0.98 U

012815027 (N) PO105 (N) 01/28/2015 0.0099 J < 0.0034 U < 0.0029 U < 0.0023 U 0.0061 J < 0.0025 U < 0.0047 U < 0.0049 U < 0.0046 U < 0.0059 U < 0.0032 U 0.0082 J 0.0042 J < 0.0034 U 0.018 J 0.027 J 0.011 J < 0.97 U < 0.97 U

041415012 PO105 04/14/2015 0.0046 J < 0.0047 U < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 UJ < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 UJ < 0.0089 U < 0.0038 U < 0.0034 U 0.0046 J 0.011 J < 0.0073 U < 0.96 U < 0.96 U

071515029 PO105 07/15/2015 0.0071 J < 0.0045 U < 0.0045 U < 0.0036 U < 0.0046 U 0.0043 J < 0.0077 U < 0.0042 UJ < 0.0051 U 0.032 J < 0.005 U 0.014 J < 0.0036 U 0.0034 J < 0.0095 U 0.013 J < 0.014 U < 1 U < 1 U

102815026 PO105 10/28/2015 < 0.0033 U < 0.0048 U < 0.0048 U < 0.0039 U 0.02 J 0.011 J 0.025 J 0.007 J 0.0063 J 0.019 J < 0.0053 UJ 0.032 J < 0.0039 U 0.0047 J < 0.012 U 0.012 J 0.031 J < 0.75 U < 0.77 U

012816122 PO105 01/28/2016 0.04 J < 0.0046 U < 0.0046 U < 0.0038 U 0.013 J 0.0071 J 0.0089 J 0.0052 J < 0.0053 U 0.011 J < 0.0052 U 0.018 J 0.0049 J 0.004 J < 0.015 U 0.021 J < 0.016 U < 0.72 UJ < 0.74 UJ

041216018 PO105 04/12/2016 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U 0.0047 J 0.0058 J 0.0058 J < 0.0056 U < 0.0059 U < 0.0056 U 0.016 J < 0.004 U < 0.0036 U 0.0074 J 0.0088 J 0.018 J < 0.73 U < 0.75 U

Page 8: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 8 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

013014002 PO106 01/30/2014 < 0.0044 U < 0.0052 U < 0.0041 U < 0.0065 U 0.0057 J < 0.0033 U < 0.0039 U < 0.0055 U < 0.005 U 0.0088 J < 0.0036 U 0.01 J < 0.0054 U < 0.0053 U < 0.0055 U < 0.0092 U 0.01 J < 0.72 U < 1.1 U

042514037 (N) PO106 (N) 04/25/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U 0.003 J 0.0038 J < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U < 0.008 U < 1 U < 1 U

071114083 PO106 07/11/2014 < 0.0069 U < 0.0074 U < 0.0068 U < 0.0073 U < 0.0058 U < 0.0094 U < 0.0067 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0078 U < 0.0071 U < 0.0053 U < 0.0088 U < 0.0089 U < 0.0082 U < 0.98 U < 0.98 U

101514018 PO106 10/15/2014 < 0.0084 U < 0.0037 U < 0.0031 U < 0.0025 U < 0.0034 U < 0.0027 U < 0.0051 U < 0.0053 U < 0.005 U < 0.0064 U < 0.0034 U < 0.0051 U < 0.003 U < 0.0037 U < 0.0061 U < 0.0089 U < 0.006 U < 0.99 U < 0.99 U

012915032 PO106 01/29/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U 0.0077 J < 0.0034 U 0.0086 J < 0.0029 U < 0.0036 U 0.0084 J 0.029 J 0.0085 J < 1 U < 1 U

041615041 (N) PO106 (N) 04/16/2015 < 0.0078 U 0.0061 J < 0.0048 U < 0.0039 U 0.011 J < 0.0042 UJ 0.0071 J 0.011 J < 0.0054 U 0.0083 J < 0.0053 UJ 0.011 J < 0.004 U 0.0065 J < 0.0093 U < 0.016 U 0.013 J < 1.1 U < 1.1 U

071515026 PO106 07/15/2015 0.0049 J < 0.005 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 UJ < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.0049 U 0.01 J < 0.0077 U < 0.99 U < 0.99 U

102815031 PO106 10/28/2015 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 UJ < 0.0044 UJ < 0.0053 UJ < 0.0035 UJ < 0.0056 UJ 0.0042 J < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 UJ 0.01 J < 0.0076 U < 0.0076 U < 0.74 U < 0.76 U

012916127 PO106 01/29/2016 < 0.0068 U < 0.0045 U < 0.0045 U < 0.0036 U < 0.0046 U < 0.004 U < 0.0048 U 0.0035 J < 0.0051 U < 0.006 U < 0.005 U < 0.0085 U < 0.0036 U < 0.0032 U < 0.027 U < 0.021 U 0.013 J < 0.77 U < 0.79 U

041216020 PO106 04/12/2016 < 0.0028 U < 0.005 U < 0.0049 U < 0.004 U 0.0071 J 0.0063 J 0.0077 J 0.0074 J < 0.0056 U < 0.0047 U < 0.0056 U 0.011 J < 0.004 U 0.0046 J < 0.0045 U < 0.0077 U 0.015 J < 0.76 U < 0.78 U

013014004 PO107 01/30/2014 < 0.0044 U < 0.0052 U < 0.0041 U < 0.0065 U 0.0055 J < 0.0033 U < 0.0039 U 0.0062 J < 0.005 U 0.011 J < 0.0036 U 0.016 J < 0.0054 U < 0.0053 U 0.0063 J 0.0097 J 0.016 J < 0.76 U < 1.1 U

042214010 (N) PO107 (N) 04/22/2014 < 0.0067 U < 0.0072 U < 0.0066 U 0.015 J 0.0066 J < 0.0091 U < 0.0065 U 0.0059 J 0.0079 J 0.011 J < 0.0061 U 0.019 J < 0.0069 U < 0.0051 U < 0.0085 U < 0.0087 U 0.017 J < 1 U < 1 U

071114089 PO107 07/11/2014 < 0.0066 U < 0.007 U 0.0066 J 0.0075 J 0.01 J 0.011 J 0.0074 J 0.0072 J 0.012 J 0.017 J < 0.006 U 0.021 J < 0.0068 U < 0.005 U < 0.0083 U 0.013 J 0.02 J < 1.1 U < 1.1 U

102114043 (N) PO107 (N) 10/21/2014 < 0.0082 U < 0.0035 U < 0.003 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.005 U < 0.0052 U < 0.0048 U < 0.0062 U < 0.0033 U 0.009 J < 0.0029 U < 0.0035 U < 0.006 U 0.016 J 0.015 J < 0.97 U < 0.97 U

012815025 PO107 01/28/2015 < 0.0085 U < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U < 0.0052 U < 0.003 U < 0.0037 U < 0.012 U 0.018 J 0.0076 J < 0.99 U < 0.99 U

041515037 PO107 04/15/2015 0.0042 J < 0.005 U < 0.0049 U 0.0066 J 0.029 J 0.017 J 0.035 J 0.016 J 0.01 J 0.026 J < 0.0056 UJ 0.052 0.0047 J 0.011 J 0.0084 J 0.034 J 0.049 J < 0.98 U < 0.98 U

071415016 PO107 07/14/2015 < 0.0064 U < 0.0049 U < 0.0049 U 0.0041 J 0.015 J 0.0087 J 0.013 J 0.0081 J 0.0066 J 0.011 J < 0.0055 U 0.03 J 0.0042 J 0.0064 J < 0.014 U 0.029 J < 0.031 U < 0.96 U < 0.96 U

102815037 PO107 10/28/2015 < 0.0026 U < 0.0048 U < 0.0048 U < 0.0039 U 0.012 J 0.0065 J 0.01 J 0.0049 J < 0.0054 UJ 0.012 J < 0.0053 UJ 0.018 J < 0.0039 U < 0.0034 UJ 0.016 J 0.016 J 0.025 J < 0.78 U < 0.8 U

012716109 (N) PO107 (N) 01/27/2016 < 0.0036 U < 0.0048 U < 0.0048 U < 0.0039 U 0.017 J 0.012 J < 0.0059 U < 0.0044 U 0.01 J < 0.0076 U < 0.0054 U 0.026 J 0.0042 J < 0.0035 U < 0.013 U 0.027 J 0.023 J < 0.77 U < 0.79 U

041216027 PO107 04/12/2016 < 0.0025 U < 0.0046 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.0041 U 0.0077 J 0.0056 J < 0.0052 U < 0.0065 U < 0.0051 U 0.014 J < 0.0037 U 0.0034 J 0.0048 J 0.0086 J 0.018 J < 0.76 U < 0.78 U

042214007 PQ101 04/22/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.013 U < 0.0088 U < 0.008 U < 1 U < 1 U

070814053 PQ101 07/08/2014 < 0.0069 U < 0.0074 U < 0.0068 U < 0.0073 U < 0.0058 U < 0.0094 U < 0.0067 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0078 U < 0.0071 U < 0.0053 U < 0.0088 U < 0.0089 U < 0.0082 U < 0.97 U < 0.97 U

101414008 PQ101 10/14/2014 0.0085 J < 0.0036 U < 0.0031 U < 0.0025 U 0.0091 J < 0.004 U 0.0089 J 0.01 J 0.0089 J 0.0086 J 0.0074 J 0.0067 J < 0.0029 U 0.0094 J 0.0097 J 0.013 J 0.0079 J < 0.97 U < 0.97 U

021315043 PQ101 02/13/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U < 0.0063 U < 0.0034 U < 0.0051 U < 0.0029 U < 0.0036 U 0.0081 J 0.0094 J < 0.0059 U < 0.97 U < 0.97 U

041415011 PQ101 04/14/2015 0.0067 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 UJ 0.007 J 0.0045 J < 0.0056 U 0.0065 J < 0.0055 UJ < 0.0093 U < 0.004 U < 0.0035 U 0.0049 J 0.014 J 0.012 J < 1 U < 1 U

042214005 PQ102 04/22/2014 < 0.0067 U < 0.0072 U < 0.0066 U < 0.007 U < 0.0056 U < 0.0091 U < 0.0065 U < 0.0039 U < 0.0029 U < 0.0032 U < 0.0061 U < 0.0075 U < 0.0069 U < 0.0051 U < 0.022 U < 0.0087 U < 0.008 U < 1 U < 1 U

070814052 PQ102 07/08/2014 < 0.0065 U < 0.007 U < 0.0064 U < 0.0068 U < 0.0054 U < 0.0088 U < 0.0063 U < 0.0038 U < 0.0028 U < 0.0031 U < 0.006 U < 0.0073 U < 0.0067 U < 0.005 U < 0.0082 U < 0.0084 U < 0.0077 U < 0.98 U < 0.98 U

101314004 PQ102 10/13/2014 < 0.0086 U < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0053 U < 0.0054 U < 0.0051 U < 0.0065 U < 0.0035 U < 0.0052 U < 0.003 U < 0.0037 U < 0.0063 U 0.014 J < 0.0061 U < 1 U < 1 U

021315044 PQ102 02/13/2015 < 0.0083 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0054 U < 0.0067 U < 0.0049 U 0.0068 J < 0.0034 U 0.007 J < 0.0029 U < 0.0036 U 0.0067 J 0.012 J 0.0094 J < 0.98 U < 0.98 U

041415014 PQ102 04/14/2015 0.012 J 0.0047 J < 0.0047 U < 0.0038 U < 0.0048 U < 0.0042 UJ 0.0069 J < 0.0033 U < 0.0053 U 0.0063 J < 0.0052 UJ 0.011 J 0.0058 J < 0.0034 U 0.01 J 0.016 J 0.011 J < 0.99 U < 0.99 U

071415011 (N) PQ102 (N) 07/14/2015 < 0.0035 U < 0.0048 U < 0.0048 U < 0.0039 U < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 UJ < 0.0055 U < 0.0041 U < 0.0054 U < 0.0091 U < 0.0039 U < 0.0035 U < 0.0057 U 0.013 J < 0.0075 U < 1 U < 1.1 U

102715012 PQ102 10/27/2015 < 0.0029 U < 0.0053 U < 0.0053 U < 0.0043 U < 0.0055 UJ < 0.0047 U < 0.0056 U < 0.0037 U < 0.006 U 0.0077 J < 0.0059 U < 0.01 U < 0.0043 U < 0.0038 U < 0.0052 U 0.0083 J < 0.0082 U < 0.77 U < 0.79 U

012616104 PQ102 01/26/2016 < 0.0077 U < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 U 0.0087 J 0.008 J < 0.0053 U 0.0094 J 0.0086 J < 0.0088 U < 0.0038 U 0.0076 J < 0.041 U 0.012 J 0.0097 J < 0.76 UJ < 0.78 UJ

041516055 PQ102 04/15/2016 0.011 J < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U 0.0058 J 0.0072 J < 0.0056 U 0.0093 J < 0.0055 U 0.01 J < 0.004 U 0.0042 J 0.013 J 0.023 J 0.013 J < 0.83 U < 0.85 U

042214009 PQ103 04/22/2014 < 0.0068 U < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U < 0.0086 U < 0.0088 U < 0.008 U < 1 U < 1 U

071014070 PQ103 07/10/2014 < 0.0075 U < 0.008 U < 0.0074 U < 0.0078 U < 0.0062 U < 0.01 U < 0.0072 U < 0.0044 U < 0.0032 U < 0.0035 U < 0.0068 U < 0.0084 U < 0.0076 U < 0.0057 U < 0.0094 U < 0.0096 U < 0.0088 U < 0.99 U < 0.99 U

101414010 PQ103 10/14/2014 0.0098 J < 0.0037 U < 0.0032 U < 0.0026 U < 0.0034 U < 0.0027 U < 0.0052 U < 0.0054 U < 0.005 U < 0.0065 U < 0.0035 U 0.0077 J < 0.003 U < 0.0037 U 0.013 J 0.015 J 0.0095 J < 1 U < 1 U

012915035 PQ103 01/29/2015 < 0.0084 U < 0.0036 U < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U 0.0088 J < 0.0034 U 0.0084 J < 0.0029 U < 0.0036 U 0.0082 J 0.022 J 0.012 J < 1 U < 1 U

041315003 (N) PQ103 (N) 04/13/2015 0.0051 J < 0.0045 U < 0.0045 U < 0.0036 U < 0.0046 U < 0.004 UJ < 0.0048 U < 0.0032 U < 0.0051 U < 0.0038 U < 0.005 UJ 0.0097 J 0.0044 J < 0.0032 U 0.0062 J 0.019 J 0.0088 J < 0.96 U < 0.96 U

071415014 PQ103 07/14/2015 < 0.0033 U < 0.0046 U < 0.0046 U < 0.0038 U < 0.0048 U < 0.0041 U < 0.005 U < 0.0033 UJ < 0.0053 U < 0.004 U < 0.0052 U < 0.0088 U < 0.0038 U < 0.0033 U < 0.0046 U < 0.0072 U < 0.0081 U < 1 U < 1 U

102815035 PQ103 10/28/2015 < 0.0027 UJ < 0.0049 UJ < 0.0048 UJ < 0.004 UJ < 0.005 UJ < 0.0043 UJ < 0.0052 UJ < 0.0034 UJ < 0.0055 UJ < 0.0042 UJ < 0.0055 UJ < 0.0092 UJ < 0.004 UJ < 0.0035 UJ 0.008 J < 0.0075 UJ < 0.0075 UJ < 0.76 U < 0.78 U

012716111 PQ103 01/27/2016 < 0.0032 U < 0.0057 U < 0.0057 U < 0.0046 U < 0.0059 U < 0.0051 UJ < 0.0061 UJ < 0.004 UJ < 0.0065 UJ < 0.0051 U < 0.0064 UJ < 0.011 U < 0.0046 U < 0.0041 UJ < 0.011 U 0.0094 J < 0.0088 U < 0.75 U < 0.77 U

041116004 PQ103 04/11/2016 0.005 J < 0.0056 U < 0.0056 U < 0.0046 U < 0.0058 U < 0.005 UJ < 0.006 UJ < 0.004 UJ < 0.0064 UJ < 0.0048 U < 0.0063 UJ < 0.011 U < 0.0046 U < 0.0041 UJ < 0.0077 U 0.017 J < 0.0087 U < 0.81 U < 0.83 U

Page 9: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 9 of 18

Crawford Station Former MGP Remedial Investigation: Groundwater Result through July 2016Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Table 1: Polycyclic Aromatic Hydrocarbons and Semi-volatile Organic Compounds Results (Pages 1 - 9)

PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH PAH SVOC SVOC

Unique Field ID Sample Location Sample Date

2-M

ethy

lnap

htha

lene

(µg/

l)

Ace

naph

then

e (µ

g/l)

Ace

naph

thyl

ene

(µg/

l)

Ant

hrac

ene

(µg/

l)

Ben

zo(a

)ant

hrac

ene

(µg/

l)

Ben

zo(a

)pyr

ene

(µg/

l)

Ben

zo(b

)fluo

rant

hene

(µg/

l)

Ben

zo(g

,h,i)

pery

lene

(µg/

l)

Ben

zo(k

)fluo

rant

hene

(µg/

l)

Chr

ysen

e (µ

g/l)

Dib

enz(

a,h)

anth

race

ne (µ

g/l)

Fluo

rant

hene

(µg/

l)

Fluo

rene

(µg/

l)

Inde

no(1

,2,3

-cd)

pyre

ne (µ

g/l)

Nap

htha

lene

(µg/

l)

Phe

nant

hren

e (µ

g/l)

Pyr

ene

(µg/

l)

Car

bazo

le (µ

g/l)

Dib

enzo

fura

n (µ

g/l)

Shaded Groundwater SL: 28 420 210 2,100 0.13 0.2 0.18 210 0.17 12 0.3 280 280 0.43 140 210 210 NS 7Underline Tap Water SL: 36 530 530 1,800 0.012 0.0034 0.034 120 0.34 3.4 0.0034 800 290 0.034 0.17 1,800 120 NS 7.9

Italics Residential GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 4.6 NS NS NS NSBold Industrial GW Vapor SL: NS NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS

DRAFT

042214006 PQ104 04/22/2014 0.014 J < 0.0073 U < 0.0067 U < 0.0071 U < 0.0056 U < 0.0092 U < 0.0065 U 0.0096 J 0.008 J 0.012 J < 0.0062 U 0.015 J < 0.007 U < 0.0052 U < 0.021 U 0.029 J 0.012 J < 1 U < 1 U

070814054 PQ104 07/08/2014 < 0.0065 U < 0.007 U < 0.0064 U < 0.0068 U < 0.0054 U < 0.0088 U < 0.0063 U < 0.0038 U < 0.0028 U < 0.0031 U < 0.006 U < 0.0073 U < 0.0067 U < 0.005 U < 0.0082 U < 0.0084 U < 0.0077 U < 0.97 U < 0.97 U

101314003 PQ104 10/13/2014 < 0.0085 U 0.0039 J < 0.0032 U < 0.0026 U < 0.0034 U 0.0067 J 0.012 J 0.0095 J < 0.005 U 0.012 J < 0.0035 U 0.021 J 0.0036 J 0.0065 J 0.0075 J 0.025 J 0.024 J < 1.1 U < 1.1 U

021215038 (N) PQ104 (N) 02/12/2015 < 0.0084 U 0.004 J < 0.0031 U < 0.0025 U < 0.0033 U < 0.0026 U < 0.0051 U < 0.0053 U < 0.0049 U 0.01 J < 0.0034 U 0.013 J 0.0034 J < 0.0036 U 0.011 J 0.018 J 0.014 J < 0.98 U < 0.98 U

041315002 PQ104 04/13/2015 0.0028 J < 0.0045 U < 0.0045 U < 0.0036 U < 0.0046 U < 0.004 UJ < 0.0048 U < 0.0032 U < 0.0051 U < 0.0038 U < 0.005 UJ < 0.0085 U < 0.0036 U < 0.0032 U 0.0055 J 0.0096 J < 0.0069 U < 0.96 U < 0.96 U

071415008 PQ104 07/14/2015 < 0.0063 U 0.0065 J < 0.0049 U < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U 0.004 J < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U 0.0061 J < 0.0035 U < 0.0075 U 0.028 J < 0.01 U < 1.1 U < 1.1 U

102715011 PQ104 10/27/2015 < 0.0027 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 UJ < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0055 U < 0.0093 U < 0.004 U < 0.0035 U < 0.0045 U < 0.0076 U < 0.0076 U < 0.73 U < 0.75 U

012616103 PQ104 01/26/2016 < 0.006 U < 0.0049 U < 0.0049 U < 0.004 U < 0.0051 U 0.0099 J 0.027 J 0.014 J 0.015 J 0.023 J 0.0062 J 0.026 J < 0.004 U 0.017 J < 0.017 U 0.02 J 0.024 J < 0.76 U < 0.78 U

041116002 PQ104 04/11/2016 0.0045 J < 0.0046 U < 0.0045 U < 0.0037 U < 0.0047 U < 0.0041 U < 0.0049 U < 0.0032 U < 0.0052 U < 0.0039 U < 0.0051 U < 0.0086 U < 0.0037 U < 0.0033 U < 0.0081 U < 0.007 U < 0.0071 U < 0.71 U < 0.73 U

042214008 PU101 04/22/2014 0.022 J 0.39 0.2 0.023 J < 0.0057 U < 0.0093 U < 0.0066 U < 0.004 U < 0.003 U < 0.0033 U < 0.0063 U < 0.0077 U < 0.007 U < 0.0052 U < 0.027 U < 0.0089 U < 0.0081 U < 1 U < 1.1 U

070714051 PU101 07/07/2014 0.017 J 0.43 0.18 0.023 J < 0.0056 U < 0.0092 U < 0.0065 U < 0.004 U < 0.0029 U < 0.0032 U < 0.0062 U < 0.0076 U < 0.007 U < 0.0052 U 0.021 J < 0.0088 U < 0.008 U < 1 U < 1 U

101314001 (N) PU101 (N) 10/13/2014 < 0.0084 U 0.91 0.33 0.0089 J < 0.0034 U < 0.0027 U < 0.0051 U < 0.0053 U < 0.005 U < 0.0064 U < 0.0034 U < 0.0051 U 0.013 J < 0.0037 U 0.014 J 0.015 J < 0.006 U < 1 U < 1 U

021315041 PU101 02/13/2015 0.019 J 1.1 0.39 0.007 J 0.005 J 0.0049 J < 0.0051 U < 0.0053 U < 0.005 U < 0.0064 U < 0.0034 U < 0.0051 U 0.022 J < 0.0037 U 0.011 J < 0.0089 U < 0.006 U < 0.97 U < 0.97 U

041315001 PU101 04/13/2015 < 0.0026 U 0.83 0.3 0.0088 J < 0.0048 U < 0.0041 UJ < 0.005 U < 0.0033 U < 0.0053 U < 0.004 U < 0.0052 UJ < 0.0088 U 0.019 J < 0.0033 U 0.0082 J 0.0097 J < 0.0072 U < 0.98 U < 0.98 U

071315001 PU101 07/13/2015 0.0063 J 0.74 0.25 0.014 J < 0.0051 U < 0.0044 U < 0.0053 U < 0.0087 UJ < 0.0056 U < 0.0052 U < 0.0055 U 0.0098 J 0.02 J < 0.0047 U 0.013 J 0.023 J 0.0092 J < 1.1 U < 1.1 U

102615001 PU101 10/26/2015 < 0.0084 U 0.75 0.24 < 0.004 U < 0.0051 U < 0.0044 U < 0.0053 U < 0.0035 U < 0.0056 U < 0.0042 U < 0.0056 U < 0.0094 U < 0.004 U < 0.0036 U < 0.0051 U 0.0084 J < 0.0077 U < 0.76 U < 0.78 U

012616101 PU101 01/26/2016 < 0.0027 U 1.4 0.44 0.0075 J < 0.005 U < 0.0043 U < 0.0052 U < 0.0034 U < 0.0055 U < 0.0042 U < 0.0055 U < 0.0092 U 0.0098 J < 0.0035 U < 0.054 U < 0.0075 U < 0.0075 U < 0.74 U < 0.76 U

041116001 PU101 04/11/2016 < 0.0034 U 0.78 0.25 0.0052 J < 0.0048 U < 0.0041 U < 0.0049 U < 0.0032 U < 0.0052 U < 0.0039 U < 0.0051 U < 0.0087 U 0.0071 J < 0.0033 U < 0.015 U < 0.0075 U < 0.0071 U < 0.71 UJ < 0.73 UJ

041416047 (N) PV101 (N) 04/14/2016 0.0053 J < 0.0044 U < 0.0044 U 0.0045 J < 0.0046 U < 0.0039 U 0.011 J 0.0064 J < 0.005 U < 0.0062 U < 0.005 U 0.019 J < 0.0036 U 0.0044 J 0.012 J 0.0098 J 0.035 J < 0.76 U < 0.78 U

070616005 PV101 07/06/2016 0.0037 J < 0.0049 U < 0.0049 U 0.0061 J < 0.0051 U 0.0051 J 0.011 J 0.0073 J 0.0072 J 0.016 J < 0.0055 U 0.018 J < 0.004 U 0.0039 J 0.015 J 0.013 J 0.022 J < 0.76 U < 0.78 U

NotesGaps in sampling events are a result of either dry wells or inaccessible wells. In addition, the Group I Parcel wells are sampled on a semi-annual basis as of July 2016, with the exception of wells near the Group II Parcel. Parcel S well samples pending-- = Analysis not performed< = Concentration is less than reported limitU = Concentration was not detected above the reported limitJ = Indicates an estimated value.J+ = Indicates a value estimated high Legend for Exceedance:R = Result rejected during validationNS = No Standard Blue Text Excceds an SL(N) = Normalized sample locations created from combining parent and field duplicate samples following EPA protocol Shaded Exceeds Groundwater SLLab comments and definitions can be found in associated laboratory and validation reports. Underline Exceeds Tapwater SLSL = Screening Level italics Exceeds Residential Groundwater-Vapor SLQC = Quality Control Field Duplicate Sample Bold Exceeds Industrial Groundwater-Vapor SLBTEX = Benzene, Toluene, Ethylbenzene and XylenePAH = Polycyclic Aromatic HydrocarbonSVOC = Semi-Volatile Organic CompoundVOC = Volatile Organic Compoundµg/L = micrograms per literAll Screening Levels are shown for comparison purposes only and are not remediation objectives or standards except for the Maximum Contaminant Levels (MCL). SLs shown on this table were presented in the Multi-Site Risk Assessment Framework Addendum Revision 5 (Exponent, July 2016). Groundwater SL shown on this table are 10-6 risk value or the MCLs. Risk-based groundwater SLs, tapwater SLs, and VI SLs are non-enforceable SLs.

Page 10: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 10 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

.020414021 MWA101 02/04/2014

042314017 (N) MWA101 (N) 04/23/2014

070914064 MWA101 07/09/2014

101614025 (N) MWA101 (N) 10/16/2014

012715016 MWA101 01/27/2015

041515028 MWA101 04/15/2015

102715013 MWA101 10/27/2015

020116142 MWA101 02/01/2016

041316035 (N) MWA101 (N) 04/13/2016

070716014 MWA101 07/07/2016

020414024 MWA102 02/04/2014

042314019 MWA102 04/23/2014

070914061 (N) MWA102 (N) 07/09/2014

101614024 MWA102 10/16/2014

012715012 MWA102 01/27/2015

041515023 (N) MWA102 (N) 04/15/2015

102715008 MWA102 10/27/2015

020116144 MWA102 02/01/2016

041316041 MWA102 04/13/2016

070716012 MWA102 07/07/2016

020514030 MWB101 02/05/2014

042314015 MWB101 04/23/2014

070914063 MWB101 07/09/2014

101614028 MWB101 10/16/2014

012815024 MWB101 01/28/2015

041515033 MWB101 04/15/2015

071315002 MWB101 07/13/2015

102715016 MWB101 10/27/2015

020116139 MWB101 02/01/2016

041316031 MWB101 04/13/2016

070716017 MWB101 07/07/2016

041316039 MWB103 04/13/2016

070716019 (N) MWB103 (N) 07/07/2016

041416049 MWC101 04/14/2016

070616003 MWC101 07/06/2016

042414028 MWO101 04/24/2014

071114088 MWO101 07/11/2014

101614021 MWO101 10/16/2014

012915031 MWO101 01/29/2015

041515032 MWO101 04/15/2015

071615036 MWO101 07/16/2015

102815036 MWO101 10/28/2015

012716112 MWO101 01/27/2016

041216017 MWO101 04/12/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.057 U -- 11.7 -- < 0.057 U -- 0.35 J+ -- 0.2 J+ -- -- -- 5.7 -- < 0.26 UJ -- < 0.052 U 4.9

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 11.5 -- < 0.089 U -- < 0.39 U -- < 0.04 U -- -- -- 12.3 -- < 0.21 UJ -- < 0.14 U 3.6

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.093 U -- 15.7 -- < 0.089 U -- < 0.39 U -- < 0.082 U -- -- -- 11.5 -- < 0.21 UJ -- < 0.14 U 7.1

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 15.9 -- < 0.089 U -- 2.3 -- < 0.051 U -- < 0.1 UJ -- 6.9 -- < 0.21 UJ -- < 0.14 U 4.8

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.095 U -- 12.5 -- < 0.089 U -- < 0.79 U -- 13 -- -- -- 3.9 -- < 0.42 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.63 U -- 11.1 -- < 0.5 U -- 0.83 J -- < 0.7 U -- -- -- 9.8 -- 0.78 J -- < 0.51 U 7 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.73 J < 0.073 U 11.9 12.6 < 0.89 U < 0.089 U < 3.9 U 1.5 J+ < 0.4 U < 0.34 U -- -- 4.4 J 4.6 < 2.1 UJ < 0.3 UJ < 1.4 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 10.6 10.7 < 0.089 U < 0.089 U 0.53 J 0.61 J 0.51 J 6.7 -- -- 6.4 6.3 < 0.21 UJ 0.25 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 11 10.3 < 0.089 U < 0.089 U 0.69 J+ 0.67 J+ < 0.09 U 0.39 J+ -- -- 8.4 J 6.3 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 4.7

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.14 U 9.8 9.7 < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.92 U 1.9 -- -- 5.3 5.4 < 0.21 UJ < 0.21 UJ 0.26 J < 0.36 U 3.7

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.054 U -- 2.4 -- < 0.057 U -- < 0.24 U -- 0.093 J -- -- -- 3.6 -- < 0.26 UJ -- < 0.052 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.5 -- < 0.089 U -- < 0.39 U -- < 0.04 U -- -- -- 4.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 4.8 -- 0.17 J -- < 0.39 U -- < 0.15 U -- -- -- 5.1 -- 0.24 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 5.4 -- < 0.089 U -- < 0.39 U -- < 0.051 U -- < 0.1 UJ -- 5.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 3.3 -- < 0.089 U -- < 0.79 U -- < 0.23 U -- -- -- 4 -- < 0.42 UJ -- < 0.29 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.9 -- < 0.089 U -- < 0.39 U -- 0.094 J -- -- -- 4.2 -- < 0.21 UJ -- < 0.14 U 45 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 5.9 6.3 < 0.089 U < 0.089 U 1.1 J+ 3.4 J+ < 0.94 U 1.9 -- -- 4.1 5.1 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U 0.12 J 3.4 6.1 < 0.089 U < 0.089 U < 0.39 U 8.8 0.29 J 21 -- -- 3.8 12 < 0.22 UJ 0.38 J < 0.14 U 0.18 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 2.2 2.5 < 0.089 U < 0.089 U 0.43 J < 0.39 U < 0.22 U 0.7 J -- -- 4.7 4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.5 U < 0.073 U 2.7 2.8 < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.06 U 6.2 -- -- 3.4 3.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 1.1 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.15 U -- 14.1 -- < 0.057 U -- 0.54 J+ -- 0.22 J+ -- -- -- 7.2 -- 0.95 J -- < 0.16 U 68 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.23 J+ -- 12.9 -- < 0.089 U -- 0.46 J -- < 0.66 U -- -- -- 6.5 -- 0.58 J -- < 0.14 U 71

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.35 U -- 16.4 -- < 0.089 U -- 0.49 J -- < 0.44 U -- -- -- 8 -- 0.65 J -- < 0.14 U 82

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.084 U -- 19.1 -- < 0.089 U -- 0.54 J -- < 0.25 U -- < 0.1 UJ -- 7 -- 0.85 J -- < 0.14 U 37

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.11 J+ -- 15.3 -- < 0.22 UJ -- 0.53 J -- 0.32 J -- -- -- 6.4 -- 0.57 J -- < 0.14 U 55

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.16 J -- 14.7 -- < 0.089 U -- 0.47 J -- 0.39 J -- -- -- 6.2 -- 0.85 J -- < 0.14 U 180 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.36 U -- 17.7 -- < 0.44 U -- < 2 U -- < 0.86 U -- -- -- 5.7 -- < 1 UJ -- < 0.71 U 150

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.12 U < 0.087 U 12.2 17 < 0.089 U < 0.089 U < 3.9 U < 3.9 U < 0.4 U < 0.59 U -- -- 6 J 9.1 J < 2.1 UJ < 2.1 UJ < 1.4 U < 0.14 U 66

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.11 J 0.14 J 14.8 16.8 < 0.089 U < 0.089 U < 2 U < 2 U 0.33 J 2.8 J -- -- 7.4 8.4 < 1 UJ < 1 UJ < 0.71 U < 0.71 U 56

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.37 J 0.59 J 16 15.3 0.12 J 0.35 J 1.3 0.92 J+ < 0.2 U 1.4 -- -- 9.1 6.7 < 0.71 UJ 1.1 J < 0.71 U 0.52 J 98

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.13 U < 0.09 U 17.7 17.9 < 0.089 U < 0.089 U < 0.39 U 0.65 J < 0.29 U 10.1 -- -- 6.1 5.9 0.59 J 0.68 J < 0.14 U < 0.14 U 80

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 12.8 12.7 < 0.089 U < 0.089 U 1.7 0.49 J 3.2 1.4 -- -- 5.1 3.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 0.6 J 0.76 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.1 U 4.5 J -- -- 0.22 J < 0.25 U < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 1.1 U

307 124 < 2.5 U 68.1 13.3 13.4 2.7 3.9 5.8 7 < 0.089 U 0.5 J 0.65 J+ 1.1 J+ < 0.66 U 10.5 -- -- 9.2 11.5 1.3 J 1.5 J < 0.14 U < 0.14 U 18

554 182 < 2.5 U 103 23.4 13.8 < 0.79 U 1.1 15.7 16.7 < 0.089 U < 0.2 U 0.55 J 0.78 J < 0.45 U 6.6 -- -- 11.4 11.9 1.2 J 1 J < 0.17 U 0.14 J 50

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 0.55 J -- < 0.089 U -- < 0.39 U -- 0.16 J -- -- -- 3.4 -- 0.61 J -- < 0.21 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.14 U -- 1.5 -- < 0.089 U -- < 0.39 U -- < 0.21 U -- < 0.1 U -- 2.4 -- 0.33 J -- < 0.14 U --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.42 U -- 5.4 -- < 0.32 U -- 8.8 -- 14.4 -- -- -- 10.9 -- 1.4 J -- < 0.17 U --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.16 J 0.16 J 2.8 0.7 J < 0.089 U < 0.089 U 0.48 J 0.66 J 0.31 J 0.39 J -- -- 3.2 1.8 1.5 J 1.9 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.14 J 0.14 J 0.33 J- 0.34 J- < 0.089 U < 0.089 U < 0.39 U < 0.39 U 0.87 J 1.4 -- -- 1.8 1.2 2 J 2 J < 0.14 U < 0.14 U < 2 U

DRAFT

Page 11: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 11 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

020414019 (N) MWO102 (N) 02/04/2014

042414035 MWO102 04/24/2014

071114084 MWO102 07/11/2014

101514017 MWO102 10/15/2014

012915034 MWO102 01/29/2015

041515034 MWO102 04/15/2015

071415018 MWO102 07/14/2015

102815032 (N) MWO102 (N) 10/28/2015

012916128 MWO102 01/29/2016

041216025 MWO102 04/12/2016

013114010 MWO103 01/31/2014

042514041 MWO103 04/25/2014

070914068 MWO103 07/09/2014

102014038 MWO103 10/20/2014

012715008 MWO103 01/27/2015

041515029 MWO103 04/15/2015

071515023 MWO103 07/15/2015

102715018 MWO103 10/27/2015

012816117 (N) MWO103 (N) 01/28/2016

041216013 MWO103 04/12/2016

013114008 MWO104 01/31/2014

042414033 MWO104 04/24/2014

071014074 MWO104 07/10/2014

102014040 MWO104 10/20/2014

012715011 MWO104 01/27/2015

041515025 MWO104 04/15/2015

071515025 MWO104 07/15/2015

102715021 MWO104 10/27/2015

012716106 MWO104 01/27/2016

041916058 (N) MWO104 (N) 04/19/2016

013014003 MWO106 01/30/2014

042514040 MWO106 04/25/2014

071114081 MWO106 07/11/2014

101414007 MWO106 10/14/2014

012915033 MWO106 01/29/2015

041615040 MWO106 04/16/2015

071515024 MWO106 07/15/2015

102815030 MWO106 10/28/2015

012916126 MWO106 01/29/2016

041216021 (N) MWO106 (N) 04/12/2016

071114078 MWQ102 07/11/2014

021315045 MWQ102 02/13/2015

041415015 MWQ102 04/14/2015

071415010 MWQ102 07/14/2015

012716108 MWQ102 01/27/2016

041516054 MWQ102 04/15/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

6.1 < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.054 U -- 1.3 -- < 0.057 U -- 0.72 J -- 1.1 -- -- -- 0.92 J -- < 0.26 UJ -- < 0.082 U 2

2.2 < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.3 -- < 0.089 U -- 0.44 J -- 0.58 J -- -- -- 0.86 J -- < 0.21 UJ -- < 0.14 U 2.9

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.1 -- < 0.089 U -- < 0.39 U -- < 0.73 U -- -- -- 0.74 J -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.5 -- < 0.089 U -- < 0.39 U -- < 0.099 U -- -- -- 2.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 0.6 J- -- < 0.24 UJ -- < 0.39 U -- 0.89 J -- -- -- < 0.11 UJ -- < 0.21 UJ -- < 0.17 U 25 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.3 -- < 0.089 U -- < 0.39 U -- 0.41 J -- -- -- 0.67 J -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.43 U -- 1.5 -- < 0.34 U -- 0.8 J -- 2.1 -- -- -- 1.2 -- < 0.49 UJ -- < 0.91 U < 2 U

3.2 < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.17 U 1.8 J+ 2.5 < 0.089 U < 0.45 U 0.62 J 8.7 5.1 J 18.5 -- -- < 0.79 U 4.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 3.4 3.5 < 0.089 U < 0.089 U < 0.39 U 0.45 J 0.54 J 0.46 J -- -- 2.3 2.2 < 0.22 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 2.2 1.7 < 0.089 U < 0.089 U < 0.39 U < 0.39 U 0.068 J 0.32 J -- -- 1.3 1.1 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.25 U -- < 1 U -- < 0.057 U -- 0.6 J -- < 0.2 U -- -- -- 4.4 -- 0.36 J -- < 0.07 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.34 J -- 4.2 -- < 0.089 U -- 5.9 -- 2.1 -- -- -- 15.5 -- 0.22 J -- < 0.17 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.09 U -- 1.7 -- < 0.089 U -- 0.47 J -- < 0.42 U -- -- -- 12.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.36 U -- 2 J -- < 0.44 U -- < 2 U -- 0.54 J -- -- -- 20.4 -- < 1 UJ -- < 0.71 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.1 U -- 1.2 -- < 0.093 U -- 1 -- < 0.44 U -- -- -- 14 -- < 0.21 UJ -- < 0.18 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.5 -- < 0.089 U -- 0.47 J -- 0.16 J -- -- -- 6 -- 0.32 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.9 -- 0.13 J -- 1.1 -- 4.6 -- -- -- 13.3 -- < 0.21 UJ -- < 0.15 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U < 0.83 U < 0.88 U < 0.089 U < 0.089 U 1.1 J+ 1.2 J+ 1.3 J+ 2.8 -- -- 2.7 2.9 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.083 J 0.074 J 1.1 1.1 0.14 J 0.16 J 0.42 J 0.56 J 0.54 J 1.1 -- -- 17.8 19.7 < 0.24 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.1 J 0.083 J 1.6 1 < 0.089 U < 0.089 U 0.45 J 0.65 J 0.082 J 0.94 J -- -- 5.1 5.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.38 U -- < 0.85 U -- < 0.2 U -- < 0.24 U -- < 0.16 U -- -- -- 6.7 -- < 0.26 UJ -- < 0.16 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.38 J -- 1.1 -- 0.21 J -- < 0.39 U -- 10.8 -- -- -- 6.5 -- 0.29 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.44 J -- 1.1 -- 0.21 J -- < 0.39 U -- 1.2 -- -- -- 5 -- 0.33 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.23 J -- 1.7 J -- < 0.18 U -- < 0.79 U -- 0.22 J -- -- -- 6.2 -- < 0.42 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.24 U -- 0.62 J -- < 0.12 U -- < 0.79 U -- < 0.46 U -- -- -- 5.5 -- < 0.42 UJ -- < 0.15 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.24 J -- 1.1 -- 0.11 J -- < 0.39 U -- 0.15 J -- -- -- 5.8 -- 0.31 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.19 U -- 1.4 -- < 0.1 U -- 0.39 J -- < 0.59 U -- -- -- 7.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.23 U < 0.21 U 1.3 J+ 1.8 < 0.089 U < 0.089 U 1.2 J+ 2.1 J+ 1.3 J+ 5.2 -- -- 6.4 6.6 < 0.21 UJ < 0.21 UJ < 0.24 U < 0.26 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.23 J 0.21 J 0.63 J 0.55 J 0.14 J 0.15 J < 0.39 U 0.48 J 0.33 J 1.3 -- -- 4.9 5.2 < 0.23 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.32 J 0.36 J 1.4 1 0.13 J 0.13 J < 0.39 U 0.76 J 2.5 J 0.58 J -- -- 8 8.2 0.24 J- 0.31 J < 0.14 U 0.24 J < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.22 U -- < 0.67 U -- < 0.057 U -- < 0.24 U -- < 0.095 U -- -- -- 4.3 -- < 0.26 UJ -- < 0.088 U < 2 U

0.56 J < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.087 J -- 2.8 -- < 0.089 U -- 0.98 J -- < 0.68 U -- -- -- 5.5 -- < 0.21 UJ -- < 0.18 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.26 J -- 2.3 -- 0.15 J -- < 0.39 U -- < 0.39 U -- -- -- 5.1 -- 0.24 J -- 0.33 J 18

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 3.3 -- < 0.089 U -- < 0.39 U -- 0.092 J- -- < 0.1 U -- 4.5 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.8 -- < 0.24 UJ -- < 0.39 U -- < 0.087 UJ -- -- -- 2.4 -- < 0.21 UJ -- < 0.14 U 38 J+

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.33 J -- 1.7 -- 0.28 J -- < 0.39 U -- 0.36 J -- -- -- 3 -- 0.54 J -- 0.45 J 4.7 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.6 -- < 0.089 U -- < 0.39 U -- < 0.11 U -- -- -- 3.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.075 U < 0.073 U 10.2 11.8 < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.45 U < 0.86 U -- -- 3.1 2.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.4 2.4 < 0.089 U < 0.089 U 0.67 J < 0.39 U 0.28 J 0.39 J -- -- 2.7 2.4 < 0.22 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 7 8.1 < 0.089 U < 0.089 U < 0.39 U < 0.39 U 0.12 J 0.59 J -- -- 2.2 2 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.17 J -- 1.1 -- < 0.089 U -- 1.3 -- 15.2 -- -- -- 3.7 -- < 0.21 UJ -- < 0.14 U --

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.11 J -- 0.72 J -- 0.089 J -- 1.3 -- 5.4 -- -- -- 10.7 -- < 0.21 UJ -- < 0.14 U --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.63 J -- 3.8 -- 1.5 -- 16.2 -- 98.8 -- -- -- 210 -- 1.2 J -- 0.32 J --

Page 12: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 12 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

042314014 MWQ104 04/23/2014

071114080 MWQ104 07/11/2014

101414006 MWQ104 10/14/2014

021315042 MWQ104 02/13/2015

041415009 MWQ104 04/14/2015

071415006 MWQ104 07/14/2015

102615002 MWQ104 10/26/2015

012616102 MWQ104 01/26/2016

041116003 MWQ104 04/11/2016

041516057 MWV101 04/15/2016

070716025 MWV101 07/07/2016

020414022 PA101 02/04/2014

042314020 PA101 04/23/2014

070914066 PA101 07/09/2014

101614023 PA101 10/16/2014

012715018 PA101 01/27/2015

041515031 PA101 04/15/2015

102715014 PA101 10/27/2015

020116141 PA101 02/01/2016

041316040 PA101 04/13/2016

070716015 PA101 07/07/2016

020414023 PA102 02/04/2014

042314021 PA102 04/23/2014

070914065 PA102 07/09/2014

101614027 PA102 10/16/2014

012715010 PA102 01/27/2015

041515026 PA102 04/15/2015

102715007 PA102 10/27/2015

020116143 PA102 02/01/2016

041316037 PA102 04/13/2016

070716013 PA102 07/07/2016

020414025 PA103 02/04/2014

042314022 PA103 04/23/2014

070914059 PA103 07/09/2014

012715006 (N) PA103 (N) 01/27/2015

041515021 PA103 04/15/2015

102715009 (N) PA103 (N) 10/27/2015

020514031 PB101 02/05/2014

042314013 PB101 04/23/2014

070914060 PB101 07/09/2014

101614029 PB101 10/16/2014

012815022 PB101 01/28/2015

041515035 PB101 04/15/2015

071315004 PB101 07/13/2015

102715015 PB101 10/27/2015

020116138 PB101 02/01/2016

041316033 PB101 04/13/2016

070716018 PB101 07/07/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

0.66 J < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.35 J -- 1.7 -- 0.2 J -- 0.86 J -- 1.7 -- < 0.1 UJ -- 6.7 -- 0.29 J -- < 0.51 U --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.078 J -- < 0.51 U -- < 0.089 U -- 0.56 J -- 1.8 -- -- -- 3.7 -- < 0.21 UJ -- < 0.14 U --

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 2.9 -- 0.14 J -- 5.4 -- 7.3 -- -- -- 7.7 -- 0.51 J -- 0.18 J --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.41 U < 0.55 U < 0.98 U 1.1 J+ < 0.14 U < 0.26 U 0.67 J 0.81 J < 0.55 U < 0.85 U -- -- 2.9 2.6 < 0.21 UJ < 0.48 UJ < 0.44 U < 0.66 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.18 J 0.2 J 0.47 J 0.51 J < 0.089 U < 0.089 U < 0.39 U 1.3 0.29 J 1.1 -- -- 3 3.7 < 0.22 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.22 J 0.2 J 1.1 0.83 J < 0.089 U < 0.089 U 0.59 J 0.51 J < 0.29 U 9.5 -- -- 3.1 2 0.31 J 0.28 J 0.25 J 0.25 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.054 U -- 8.2 -- < 0.057 U -- 0.79 J -- 0.45 J -- -- -- 2.1 -- < 0.26 UJ -- < 0.052 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 8.3 -- < 0.089 U -- < 0.39 U -- < 0.35 U -- -- -- 0.9 J -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 5.7 -- < 0.089 U -- < 0.39 U -- 0.59 J -- -- -- 1.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 7.7 -- < 0.089 U -- 1.2 -- < 0.21 U -- < 0.1 UJ -- 0.85 J -- < 0.21 UJ -- < 0.14 U 20

0.5 R 0.5 R 0.5 R 1.5 R 0.5 R 0.5 R -- < 0.19 U -- 12.2 -- < 0.089 U -- 1.6 -- 49.3 -- -- -- 2 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.4 U -- 7.5 -- < 0.089 U -- 4.5 -- 8 -- -- -- 3.3 -- 0.53 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.78 U < 0.64 U 12.8 8.4 < 0.44 U < 0.089 U < 2.9 U 1.2 J+ 11.4 1.8 J+ -- -- 6.3 4 < 1 UJ < 0.21 UJ < 0.71 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 9.1 10 < 0.089 U < 0.089 U < 0.39 U 1.1 0.46 J 11.2 -- -- 0.55 J 2 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.11 J 0.08 J 0.36 J 0.4 J < 0.089 U < 0.089 U 0.4 J < 0.39 U < 0.56 U 0.8 J -- -- 4.5 1.9 < 0.21 UJ < 0.21 UJ < 0.2 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 1.7 < 0.073 U 8.6 7.8 1.6 < 0.089 U 1.5 < 0.39 U 1.9 6.6 -- -- 2.1 < 0.78 U 1.8 J < 0.21 UJ 1.8 < 0.14 U 1.6 J

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.49 U -- < 0.55 U -- < 0.057 U -- < 0.24 U -- 0.17 J -- -- -- 3.9 -- < 0.26 UJ -- < 0.13 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.31 J -- < 0.38 U -- < 0.089 U -- < 0.39 U -- < 0.075 U -- -- -- 3.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.22 J -- 0.58 J -- < 0.089 U -- < 0.39 U -- 0.68 J -- -- -- 4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.076 U -- < 0.37 U -- < 0.089 U -- < 0.39 U -- < 0.53 U -- < 0.1 UJ -- 4.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.13 U -- < 0.26 U -- < 0.089 U -- < 0.39 U -- 3.1 -- -- -- 2.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.1 J -- 0.46 J -- < 0.089 U -- < 0.39 U -- 0.62 J -- -- -- 1.8 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.12 U < 0.097 U < 0.57 U < 0.58 U < 0.089 U < 0.089 U 1.2 J+ 2.2 J+ < 0.24 U < 0.33 U -- -- 3.9 4.3 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.14 J 0.099 J 0.25 J 0.16 J < 0.089 U < 0.089 U < 0.39 U 0.42 J 0.23 J 2.5 -- -- 1.1 1.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 8 9.5 < 0.089 U < 0.089 U 0.79 J 0.85 J < 0.17 U 1.3 -- -- 2.1 0.67 J < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 0.39 J 0.3 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.62 U 5.4 -- -- 2.1 2.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 1.1 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.31 U -- 1 -- < 0.057 U -- 0.57 J -- 0.38 J -- -- -- 7.3 -- < 0.26 UJ -- < 0.15 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.18 J -- < 0.52 U -- < 0.089 U -- 1.3 -- < 0.13 U -- -- -- 5 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.18 U -- 0.8 J -- < 0.089 U -- 1 -- < 0.48 U -- -- -- 7 -- < 0.21 UJ -- < 0.19 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.23 U -- 0.39 J -- < 0.089 U -- < 0.79 U -- < 0.46 U -- -- -- 5.6 -- < 0.42 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.17 J -- 0.74 J -- < 0.089 U -- 0.45 J -- 0.35 J -- -- -- 4.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.25 U < 0.16 U < 0.71 U 1 J+ < 0.089 U < 0.089 U 2 J+ 1.9 J+ < 0.04 U < 0.51 U -- -- 4.2 5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.57 U -- < 0.79 U -- < 0.057 U -- 0.3 J -- 0.13 J -- -- -- 12 -- < 0.26 UJ -- < 0.17 U 56 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 1.3 -- < 0.089 U -- 2.9 -- 2.1 -- -- -- 10.7 -- < 0.21 UJ -- < 0.17 U 33

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.16 J -- 1.2 -- < 0.089 U -- 1.5 -- 0.78 J -- -- -- 7.3 -- 0.35 J -- < 0.14 U 42

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.2 U -- < 0.84 U -- < 0.089 U -- 1.9 -- 1.3 -- < 0.1 UJ -- 8 -- 0.32 J -- < 0.14 U 6.7

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.68 J -- 1.8 J -- < 0.23 UJ -- 6.2 -- 6.5 -- -- -- 11 -- < 0.42 UJ -- < 0.29 U 5.6

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.096 J -- 1.2 -- < 0.089 U -- 1.1 -- 1.3 -- -- -- 5.9 -- 0.21 J -- < 0.14 U 45 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.3 -- < 0.089 U -- 0.8 J -- 1 -- -- -- 5.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.13 U < 0.12 U 1.4 1.6 J+ < 0.089 U < 0.089 U 1.1 J+ 2.5 J+ 1.5 J+ 3.3 -- -- 4.9 4.9 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.11 J 0.085 J 0.56 J 0.73 J < 0.089 U < 0.089 U < 0.39 U 1.3 3.2 4.9 -- -- 4.2 4.6 0.25 J- 0.29 J 0.15 J 0.18 J 6.8

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 0.26 J 0.8 J < 0.089 U < 0.089 U < 0.39 U 1.4 < 0.18 U 2.4 -- -- 1.5 4.9 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 10

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.4 1.7 < 0.089 U < 0.089 U < 0.39 U 0.81 J 11.6 15.6 -- -- 3.6 4.1 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 12

Page 13: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 13 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

020514028 (N) PB102 (N) 02/05/2014

042314016 PB102 04/23/2014

070914067 PB102 07/09/2014

101714031 PB102 10/17/2014

012815020 PB102 01/28/2015

041415018 PB102 04/14/2015

071315003 PB102 07/13/2015

102815024 PB102 10/28/2015

020116137 PB102 02/01/2016

041316043 PB102 04/13/2016

070716011 PB102 07/07/2016

041316042 PB103 04/13/2016

070716021 PB103 07/07/2016

041316038 PB104 04/13/2016

070716024 PB104 07/07/2016

041416046 PC101 04/14/2016

070616004 PC101 07/06/2016

041416050 PC103 04/14/2016

070616002 PC103 07/06/2016

041416051 PC103S 04/14/2016

070616001 PC103S 07/06/2016

020614034 PCO-MW004 02/06/2014

042414025 PCO-MW004 04/24/2014

071114085 PCO-MW004 07/11/2014

101414009 PCO-MW004 10/14/2014

012715014 (N) PCO-MW004 (N) 01/27/2015

041415019 PCO-MW004 04/14/2015

071515030 PCO-MW004 07/15/2015

102715022 PCO-MW004 10/27/2015

012816120 PCO-MW004 01/28/2016

041216012 PCO-MW004 04/12/2016

020614035 PCO-MW005 02/06/2014

042414027 PCO-MW005 04/24/2014

070714048 PCO-MW005 07/07/2014

101514012 PCO-MW005 10/15/2014

012715017 PCO-MW005 01/27/2015

041515030 PCO-MW005 04/15/2015

071515032 PCO-MW005 07/15/2015

102815025 PCO-MW005 10/28/2015

012816121 PCO-MW005 01/28/2016

041216015 PCO-MW005 04/12/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.054 U -- 6.3 -- < 0.057 U -- 0.41 J -- 0.14 J -- -- -- 2.3 -- < 0.26 UJ -- < 0.052 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 6.5 -- < 0.089 U -- < 0.39 U -- < 0.04 U -- -- -- 1.6 -- < 0.21 UJ -- < 0.14 U 2.5

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 10.4 -- < 0.089 U -- < 0.39 U -- < 0.46 U -- -- -- 1.6 -- < 0.21 UJ -- < 0.14 U 2.4

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 9.5 -- < 0.089 U -- 0.43 J -- 0.052 J -- -- -- 1.6 -- 0.21 J -- < 0.22 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.099 J -- 12.6 -- < 0.089 UJ -- 0.53 J -- 0.29 J- -- -- -- 1.6 J- -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 12.5 -- < 0.089 U -- 0.41 J -- 0.049 J -- -- -- 1.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 8 -- < 0.089 U -- 0.44 J -- 1.2 -- -- -- 1.2 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 9 9.2 < 0.089 U < 0.089 U 0.95 J 0.69 J < 0.46 U < 0.53 U -- -- 1.1 J+ 1.2 J+ < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 2.9 4 < 0.089 U < 0.089 U < 0.39 U 0.57 J 0.62 J 2.5 -- -- 0.94 J 1.1 < 0.21 UJ 0.37 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 8.5 10.2 < 0.089 U < 0.089 U 0.62 J 0.73 J < 0.66 U 5.8 -- -- 1.3 1.3 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.17 U < 0.17 U 6.5 7.3 0.12 J < 0.13 U < 0.39 U 0.5 J < 0.27 U 2.2 -- -- 1 1 0.34 J 0.34 J 0.49 J < 0.52 U < 1.1 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 0.31 J 0.48 J < 0.089 U < 0.089 U 0.72 J 0.65 J < 0.5 U 1.6 -- -- 0.84 J 0.9 J < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 13.5 13.4 < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.79 U 3 -- -- 7.2 7.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 1.3 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ < 0.073 U < 0.073 U 0.86 J 1.9 < 0.089 U < 0.089 U 0.56 J < 0.39 U 5.8 9.5 -- -- 2 0.67 J < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.099 U 1.7 7.2 < 0.089 U < 0.089 U < 0.39 U 3.4 < 0.4 U 6.7 -- -- 0.52 J 5.1 < 0.21 UJ 0.31 J < 0.14 U < 0.14 U < 1.1 U

1 < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 1.1 1 J 1.7 1.5 < 0.089 U < 0.089 U 0.4 J+ < 0.39 U 3 3.9 -- -- 2.6 2.5 < 0.35 UJ 0.4 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.16 U < 0.1 U 2 2.4 < 0.089 U < 0.089 U 0.4 J < 0.39 U < 0.21 U < 0.51 U -- -- 2.3 2.3 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 1.1 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.7 J 0.99 J 2.4 2.8 < 0.089 U < 0.089 U < 0.39 U 2.3 J+ < 0.59 U 2.5 -- -- 6.8 8.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.46 U < 0.84 U 1.9 2.6 < 0.21 U < 0.45 U 0.42 J 2.5 < 0.28 U 1.9 -- -- 3 4.5 0.54 J 0.89 J < 0.59 U 0.78 J < 1.1 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.16 J < 0.073 U < 0.72 U 0.91 J < 0.089 U < 0.089 U 0.4 J+ 0.85 J+ < 0.33 U 0.42 J+ -- -- 0.65 J 0.79 J < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.27 U < 0.073 U 1.2 1.3 < 0.17 U < 0.089 U 0.58 J 0.7 J < 0.21 U < 0.54 U -- -- 1.3 1.6 0.27 J < 0.21 UJ < 0.49 U < 0.14 U 3.5

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- 0.39 J -- 2 -- 0.14 J -- 0.56 J -- 0.56 J -- -- -- 4.2 -- 0.47 J -- < 0.66 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 1.6 -- 0.15 J -- 0.49 J -- 0.41 J -- -- -- 3.5 -- 0.5 J -- < 1 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 4.6 -- < 0.089 U -- < 0.39 U -- < 0.077 U -- -- -- 4.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.094 J -- 1.7 -- < 0.089 U -- 8.8 -- 0.078 J -- < 0.1 U -- 3.7 -- < 0.21 UJ -- < 0.3 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.073 U -- < 0.089 U -- < 0.39 U -- < 0.21 U -- -- -- 2.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.4 -- < 0.089 U -- < 0.39 U -- 0.05 J -- -- -- 2.9 -- 0.22 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.096 U -- 1.4 -- < 0.089 U -- < 0.39 U -- < 0.33 U -- -- -- 3.1 -- < 0.21 UJ -- < 0.42 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.083 U < 0.093 U 1.1 J+ 1.6 J+ < 0.089 U < 0.089 U 1.1 J+ 1.4 J+ < 0.38 U 1.4 J+ -- -- 3.3 3.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.083 J < 0.073 U 0.86 J 1.4 < 0.089 U < 0.089 U < 0.39 U 0.42 J 0.76 J 0.82 J -- -- 3 3.2 < 0.24 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.21 J 0.098 J 1.1 J- 0.81 J < 0.089 U < 0.089 U < 0.39 U 0.91 J 1.2 38.6 -- -- 3.7 3.9 0.42 J- 0.43 J 0.28 J 0.23 J < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- 0.26 J -- 1.5 -- 0.17 J -- 0.4 J -- 0.4 J -- -- -- 3.7 -- 0.36 J -- < 0.93 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.11 J -- 1.7 -- < 0.089 U -- 0.67 J -- 0.46 J -- -- -- 3.2 -- < 0.21 UJ -- < 0.22 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 0.79 J -- < 0.089 U -- < 0.39 U -- 0.076 J -- -- -- 2.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.26 U -- < 0.69 U -- < 0.19 U -- < 0.39 U -- < 0.26 U -- -- -- 3.1 -- 0.31 J -- < 0.69 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.98 U -- < 0.089 U -- < 0.39 U -- < 0.21 U -- -- -- 2.2 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.2 -- < 0.089 U -- < 0.39 U -- 1 J -- -- -- 2.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.2 -- < 0.089 U -- < 0.39 U -- < 0.93 U -- -- -- 2.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.16 U < 0.57 U < 0.95 U 1.6 < 0.089 U < 0.47 U < 0.39 U 0.93 J < 0.42 U 1.2 -- -- 2.2 3.1 < 0.21 UJ < 0.85 UJ < 0.19 U < 0.99 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U < 0.073 U 0.074 J 0.68 J 1 < 0.089 U < 0.089 U < 0.39 U 0.42 J 0.56 J 0.65 J -- -- 1.7 2.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 0.97 J- 0.67 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U 0.21 J 1.4 -- -- 3 1.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

Page 14: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 14 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

020514032 PCO-MW006 02/05/2014

042414029 PCO-MW006 04/24/2014

070714047 PCO-MW006 07/07/2014

101714034 PCO-MW006 10/17/2014

012815021 PCO-MW006 01/28/2015

041615039 PCO-MW006 04/16/2015

071515033 PCO-MW006 07/15/2015

102815029 PCO-MW006 10/28/2015

012816116 PCO-MW006 01/28/2016

041216019 PCO-MW006 04/12/2016

042414026 PCO-MW015 04/24/2014

071014076 PCO-MW015 07/10/2014

101714035 PCO-MW015 10/17/2014

012815026 PCO-MW015 01/28/2015

041415016 (N) PCO-MW015 (N) 04/14/2015

071515031 PCO-MW015 07/15/2015

102815028 PCO-MW015 10/28/2015

012816114 PCO-MW015 01/28/2016

041216023 PCO-MW015 04/12/2016

042514043 PCO-MW018 04/25/2014

071114086 (N) PCO-MW018 (N) 07/11/2014

101614022 PCO-MW018 10/16/2014

012915036 PCO-MW018 01/29/2015

041615043 PCO-MW018 04/16/2015

071515034 PCO-MW018 07/15/2015

102615005 PCO-MW018 10/26/2015

012916125 PCO-MW018 01/29/2016

041216024 PCO-MW018 04/12/2016

041316032 PE101 04/13/2016

070616007/070616008 PE101 (N) 07/06/2016

041316034 PE102 04/13/2016

070616009 PE102 07/06/2016

020314014 PK101 02/03/2014

042114001 PK101 04/21/2014

070714046 PK101 07/07/2014

101514015 PK101 10/15/2014

012615001 PK101 01/26/2015

041315005 PK101 04/13/2015

071415009 PK101 07/14/2015

102615003 PK101 10/26/2015

012916132 (N) PK101 (N) 01/29/2016

041116008 PK101 04/11/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.15 U -- 1.4 -- < 0.057 U -- 0.42 J -- 0.44 J -- -- -- 2.8 -- < 0.26 UJ -- < 0.13 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.16 J -- 2.6 -- 0.11 J -- < 0.39 U -- 0.16 J -- -- -- 2 -- < 0.21 UJ -- < 0.8 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.1 J -- 2.6 -- < 0.089 U -- < 0.39 U -- 0.11 J- -- -- -- 1.6 -- < 0.21 UJ -- < 0.86 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 3 -- < 0.089 U -- < 0.39 U -- 0.13 J -- -- -- 1.6 -- 0.23 J -- < 0.4 U 2

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2 -- < 0.22 UJ -- < 0.39 U -- < 0.11 UJ -- -- -- 0.89 J- -- < 0.21 UJ -- < 0.14 U 3.7

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.23 J -- 2.2 -- 0.19 J -- < 0.39 U -- 0.21 J -- -- -- 1.7 -- 0.22 J -- 0.5 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.7 -- < 0.089 U -- < 0.39 U -- < 0.26 U -- -- -- 1.4 -- < 0.21 UJ -- < 0.23 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.12 U < 0.087 U 1.6 J+ 1.7 J+ < 0.089 U < 0.089 U 0.54 J 0.5 J < 0.23 U < 0.089 U -- -- 1.5 J+ 1.5 J+ < 0.21 UJ < 0.21 UJ < 0.25 U < 0.23 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.11 J 0.13 J 1.9 2.2 < 0.089 U < 0.089 U < 0.39 U 0.54 J 1.3 1.8 -- -- 1.3 1.5 < 0.23 UJ < 0.21 UJ 0.29 J 0.36 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.4 1.3 < 0.089 U < 0.089 U 0.48 J < 0.39 U 0.85 J 23.7 -- -- 1.1 1.1 < 0.21 UJ < 0.21 UJ < 0.14 U 0.23 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.37 J -- 1.2 -- 0.35 J -- < 0.39 U -- 0.076 J -- -- -- 10.3 -- < 0.21 UJ -- < 0.29 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.19 J -- 1.2 -- 0.14 J -- < 0.39 U -- 1.4 -- -- -- 8.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.42 J -- 1 -- 0.41 J -- 0.66 J -- 0.7 J -- -- -- 8.7 -- < 0.21 UJ -- < 0.5 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.43 J -- 0.75 J- -- 0.45 J- -- 0.49 J -- 0.093 J- -- -- -- 9.8 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.15 J -- 1 -- 0.21 J -- 0.48 J -- 0.061 J -- -- -- 6.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 1.8 -- 1.5 -- 1.2 -- 1.8 -- < 0.34 U -- -- -- 211 -- < 0.21 UJ -- < 0.14 U 1.6 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 1.8 J+ 1.9 1.6 J+ 1.9 1.5 J+ 1.9 1.8 2.1 < 0.38 U < 0.62 U -- -- 170 185 < 0.36 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.3 J 0.31 J 0.65 J 0.8 J 0.57 J 0.61 J 0.7 J 0.51 J 0.086 J 0.57 J -- -- 20.4 22.3 < 0.21 UJ < 0.21 UJ 0.26 J 0.26 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.93 J 0.8 J 0.95 J- 0.57 J 0.64 J 0.58 J 1 1 2.8 8 -- -- 65.8 63.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.73 U -- 2.2 -- 0.42 J -- < 0.39 U -- < 0.4 U -- -- -- 6.6 -- < 0.21 UJ -- < 1.4 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.36 U -- 5.3 -- < 0.44 U -- < 2 U -- 0.44 J -- -- -- 4.3 J -- < 1 UJ -- < 0.71 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.81 U -- 1 -- < 0.18 U -- 0.45 J -- < 0.19 U -- < 0.1 U -- 9.3 -- 1.2 J -- < 0.38 U 12

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.45 J -- 0.49 J- -- < 0.21 UJ -- < 0.39 U -- 1.8 -- -- -- 1.9 -- 0.65 J -- < 0.14 U 42 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.37 J -- 1.1 -- < 0.089 U -- < 0.39 U -- 0.68 J -- -- -- 2.4 -- 0.99 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.44 U -- 1.3 -- < 0.089 U -- < 0.39 U -- < 0.091 U -- -- -- 3.6 -- 0.41 J -- < 0.23 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.36 U < 0.34 U < 0.76 U 1 J+ < 0.16 U < 0.14 U 1.2 J+ 1.1 J+ < 0.17 U < 0.44 U -- -- 6.1 5.3 < 0.27 UJ < 0.27 UJ < 0.27 U < 0.28 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.42 J 0.38 J 0.43 J 0.61 J < 0.089 U < 0.089 U < 0.39 U 0.4 J 0.69 J 0.29 J -- -- 2.4 2.4 0.78 J- 1.3 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.4 J 0.43 J 0.96 J- 0.59 J < 0.089 U < 0.089 U < 0.39 U 0.42 J 1.4 41 -- -- 2.1 2.2 1.1 J- 0.92 J < 0.14 U 0.24 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.75 J 0.74 J 1.3 0.88 J 0.099 J < 0.089 U 2.9 0.43 J 8.1 25.1 -- -- 24.8 22.2 1.7 J 1.3 J < 0.29 U 0.26 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.077 U < 0.073 U 0.84 J 0.92 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.06 U < 0.37 U -- -- 12.4 13.2 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 1.1 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 UJ 0.97 J 0.9 J 0.66 J 0.82 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.54 U 1.9 -- -- 12.2 11.3 4.5 J 4.1 J < 0.16 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.72 U < 0.62 U 0.7 J 1.2 < 0.089 U < 0.089 U 0.44 J 2.4 < 0.29 U 2.2 -- -- 8 8.2 0.56 J 0.38 J < 0.14 U < 0.14 U < 1.1 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- 0.79 J -- < 0.85 U -- 0.086 J -- 0.33 J -- 0.27 J -- < 0.1 UJ -- 6 -- 0.95 J -- < 0.44 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.7 U -- 0.82 J -- < 0.089 U -- < 0.39 U -- 0.27 J -- < 0.1 UJ -- 4 -- 0.27 J -- < 0.84 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.44 J -- 0.57 J -- < 0.089 U -- < 0.39 U -- 0.41 J -- < 0.1 UJ -- 6.1 -- < 0.21 UJ -- < 0.21 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.25 U -- < 0.59 U -- < 0.089 U -- 0.7 J -- < 0.2 U -- < 0.1 UJ -- 5.4 -- 0.35 J -- < 0.14 U 13

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.25 U -- < 0.38 U -- < 0.089 U -- < 0.39 U -- < 0.2 U -- < 0.1 UJ -- 2.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.31 J -- 0.58 J -- < 0.089 U -- < 0.39 U -- 0.26 J -- < 0.1 U -- 3.2 -- < 0.21 UJ -- 0.18 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.22 U -- < 0.37 U -- < 0.089 U -- < 0.39 U -- < 0.46 U -- < 0.1 U -- 2.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.28 U < 0.17 U < 0.59 U < 0.82 U < 0.089 U < 0.089 U 1.2 J+ 1.3 < 0.46 U < 0.57 U < 0.1 U < 0.1 U 3.5 5.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.26 J 0.19 J 0.3 J 0.34 J < 0.089 U < 0.089 U < 0.39 U < 0.39 U 0.38 J 0.48 J < 0.1 U < 0.1 U 2.4 2.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.16 J 0.14 J < 0.66 U 0.98 J < 0.089 U < 0.089 U 0.41 J 0.42 J 6 1.3 -- -- 2.1 2 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

Page 15: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 15 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

020314016 PK102 02/03/2014

042314023 PK102 04/23/2014

071014071 PK102 07/10/2014

101714032 PK102 10/17/2014

012615003 PK102 01/26/2015

041415010 PK102 04/14/2015

071415013 PK102 07/14/2015

102815039 PK102 10/28/2015

012916134 PK102 01/29/2016

041116009 PK102 04/11/2016

020314015 PK103 02/03/2014

042114003 PK103 04/21/2014

070714045 PK103 07/07/2014

102314046 PK103 10/23/2014

012615004 PK103 01/26/2015

041315006 PK103 04/13/2015

071415015 PK103 07/14/2015

102615004 PK103 10/26/2015

012916135 PK103 01/29/2016

041116006 (N) PK103 (N) 04/11/2016

020314012 (N) PK104 (N) 02/03/2014

042114002 PK104 04/21/2014

070814055 (N) PK104 (N) 07/08/2014

101714033 PK104 10/17/2014

012615002 PK104 01/26/2015

041415008 PK104 04/14/2015

071415007 PK104 07/14/2015

102815040 PK104 10/28/2015

012916131 PK104 01/29/2016

041116005 PK104 04/11/2016

013014001 PO101 01/30/2014

042414030 (N) PO101 (N) 04/24/2014

071014072 (N) PO101 (N) 07/10/2014

101514013 (N) PO101 (N) 10/15/2014

012815023 PO101 01/28/2015

041415013 PO101 04/14/2015

071415019 (N) PO101 (N) 07/14/2015

102815027 PO101 10/28/2015

012816115 PO101 01/28/2016

041216016 PO101 04/12/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- 0.3 J -- < 0.84 U -- < 0.057 U -- 0.67 J -- 0.74 J -- < 0.1 UJ -- 8.4 -- < 0.26 UJ -- < 0.7 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.93 J+ -- 8.7 -- 0.14 J -- 34 -- 12.2 -- < 0.1 U -- 39.8 -- 2 J -- < 0.61 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.29 J -- 1.6 -- < 0.089 U -- 1.9 -- 1.4 -- < 0.1 UJ -- 8.3 -- 0.33 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.34 J -- 1.1 -- < 0.089 U -- 0.62 J -- 0.53 J -- < 0.1 U -- 6.1 -- 0.26 J -- 0.17 J 1.9 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.31 U -- < 0.89 U -- < 0.089 U -- 2.4 -- 13.4 -- < 0.1 UJ -- 7.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.15 J -- 0.96 J -- < 0.089 U -- 1.4 -- 1.3 -- < 0.1 U -- 5.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.075 U -- < 0.68 U -- < 0.089 U -- 1.4 -- < 0.72 U -- < 0.1 U -- 5.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.089 U < 0.075 U < 0.72 U < 0.9 U < 0.089 U < 0.089 U < 0.39 U 1.4 < 0.3 U < 0.62 U < 0.1 U < 0.1 U 6.1 7.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.12 J 0.14 J 0.29 J 0.65 J < 0.089 U < 0.089 U < 0.39 U 2.1 0.52 J 2.6 < 0.1 U < 0.1 U 5 6.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.1 J 0.096 J < 0.83 U 1.1 < 0.089 U < 0.089 U 1.7 1.1 17.4 15.4 -- -- 4.7 4.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- 0.36 J -- 1.2 -- 0.065 J -- 0.26 J -- 0.48 J -- < 0.1 UJ -- 20.2 -- 0.3 J -- < 0.38 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.35 U -- 1.4 -- < 0.089 U -- 0.57 J -- 0.79 J -- < 0.1 UJ -- 15.1 -- 0.23 J -- < 0.33 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.6 J -- 1.1 -- < 0.089 U -- 0.58 J -- 0.75 J -- < 0.1 UJ -- 9.3 -- 0.78 J -- < 0.5 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.22 U -- 1.1 -- < 0.089 U -- < 0.39 U -- < 0.34 U -- -- -- 21.9 -- 0.48 J -- < 0.22 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.2 U -- < 0.43 U -- < 0.089 U -- < 0.79 U -- 2 -- < 0.1 UJ -- 16 -- < 0.42 UJ -- < 0.29 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.62 J -- 0.73 J -- < 0.089 U -- 1.5 -- 2.2 -- < 0.1 U -- 2.5 -- 0.65 J- -- 0.19 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.11 U -- < 0.91 U -- < 0.089 U -- < 0.39 U -- 57.3 -- < 0.1 U -- 13.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.15 U < 0.14 U 1.4 1.5 J+ < 0.089 U < 0.089 U 1.3 J+ 1.5 < 0.23 U 4 < 0.1 U < 0.1 U 16 16.2 < 0.21 UJ < 0.21 UJ < 0.15 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.33 J 0.32 J 0.32 J 0.36 J < 0.089 U < 0.089 U < 0.39 U 0.56 J 0.82 J 5 < 0.1 U < 0.1 U 6.1 6.4 0.28 J- 0.62 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.21 J 0.22 J 1.5 1.5 < 0.089 U < 0.089 U < 0.39 U 0.56 J < 0.31 U 9.6 -- -- 10 9.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.54 U -- 1.2 -- < 1 U -- 0.43 J -- 0.56 J -- < 0.1 UJ -- 9.7 -- 0.42 J -- 1 < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.45 U -- 1.2 -- < 0.089 U -- 2.1 -- 2 -- < 0.1 UJ -- 7 -- < 0.21 UJ -- < 0.58 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.28 J -- 0.9 J -- < 0.089 U -- 1.4 -- 0.95 J -- < 0.1 UJ -- 6.4 -- 0.28 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 0.81 J -- < 0.18 U -- < 0.79 U -- 0.34 J -- < 0.1 U -- 5.2 -- < 0.42 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.15 U -- < 0.58 U -- < 0.089 U -- 0.69 J -- < 0.68 U -- < 0.1 UJ -- 5.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.1 J -- 0.79 J -- < 0.089 U -- 0.4 J -- 0.67 J -- < 0.1 U -- 5.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.69 U -- < 0.089 U -- 0.55 J -- < 0.8 U -- < 0.1 U -- 6.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.17 U < 0.14 U < 0.95 U < 0.82 U < 0.089 U < 0.089 U < 0.39 U 0.4 J < 0.2 U < 0.26 U < 0.1 U < 0.1 U 3.3 3.7 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.13 J 0.16 J 0.27 J 0.71 J < 0.089 U < 0.089 U < 0.39 U 1.1 0.55 J 1.7 < 0.1 U < 0.1 U 3.8 5.4 < 0.24 UJ 0.33 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.16 J 0.15 J 1.2 1 < 0.089 U < 0.089 U < 0.39 U 1.2 3.1 8.9 -- -- 4.1 5.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.59 U -- < 0.57 U -- < 0.057 U -- 0.29 J -- < 0.16 U -- -- -- 3.4 -- 1.2 J -- < 0.066 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.52 J -- 0.53 J -- < 0.089 U -- < 0.39 U -- 0.28 J -- -- -- 3.2 -- 0.47 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.47 J -- -- -- < 0.089 U -- < 0.39 U -- 0.33 J -- -- -- 2.9 -- -- -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.58 U -- < 0.47 U -- < 0.089 U -- 0.63 J -- 1.1 -- -- -- 2.6 -- < 0.21 UJ -- < 0.28 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.32 J -- 0.34 J- -- < 0.21 UJ -- 0.5 J -- 1.5 -- -- -- 4.8 -- < 0.21 UJ -- < 0.14 U 2.7

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.28 J -- 0.54 J -- < 0.089 U -- 0.41 J -- 0.76 J -- -- -- 1.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.2 U -- 1.5 -- < 0.089 U -- 2.7 J -- 2.4 J -- -- -- 3.9 J -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.19 U < 0.17 U < 0.57 U < 0.85 U < 0.089 U < 0.089 U < 0.39 U 1.1 1.1 J+ 3 -- -- 1.7 J+ 2.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.22 J 0.28 J 0.53 J 0.54 J < 0.089 U 0.17 J 0.46 J 1.1 2 2.6 -- -- 1.6 1.9 < 0.24 UJ < 0.21 UJ 0.25 J 0.36 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.14 J 0.14 J 0.33 J- 0.28 J- < 0.089 U < 0.089 U 0.46 J 2.5 1.6 2.1 -- -- 2.6 1.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

Page 16: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 16 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

020414018 PO102 02/04/2014

042414032 PO102 04/24/2014

071114082 PO102 07/11/2014

101714036 PO102 10/17/2014

012815029 PO102 01/28/2015

041515036 PO102 04/15/2015

071415017 PO102 07/14/2015

102815034 PO102 10/28/2015

012916129 PO102 01/29/2016

041216026 PO102 04/12/2016

013114009 PO103 01/31/2014

042514042 PO103 04/25/2014

070814057 PO103 07/08/2014

102014039 PO103 10/20/2014

012715009 PO103 01/27/2015

041515027 PO103 04/15/2015

071515022 PO103 07/15/2015

102715017 PO103 10/27/2015

012816119 PO103 01/28/2016

041216014 PO103 04/12/2016

013114007 PO104 01/31/2014

042414034 PO104 04/24/2014

071014075 PO104 07/10/2014

102114042 PO104 10/21/2014

012715013 PO104 01/27/2015

041515022 PO104 04/15/2015

071515027 (N) PO104 (N) 07/15/2015

102715019 (N) PO104 (N) 10/27/2015

012716107 PO104 01/27/2016

041916060 PO104 04/19/2016

013114006 PO105 01/31/2014

042514039 PO105 04/25/2014

071114079 PO105 07/11/2014

101514016 PO105 10/15/2014

012815027 (N) PO105 (N) 01/28/2015

041415012 PO105 04/14/2015

071515029 PO105 07/15/2015

102815026 PO105 10/28/2015

012816122 PO105 01/28/2016

041216018 PO105 04/12/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.069 U -- 2.8 -- < 0.057 U -- 0.26 J -- 0.64 J -- -- -- 0.48 J -- < 0.26 UJ -- < 0.13 U 150

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.34 J -- 7.2 -- < 0.089 U -- 1.8 -- 2 -- -- -- 4.2 -- 0.44 J -- < 0.14 U 96

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.13 J -- 4.8 -- < 0.089 U -- < 0.39 U -- < 0.27 U -- -- -- 1.6 -- < 0.21 UJ -- < 0.14 U 110

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.3 -- < 0.089 U -- 0.87 J -- 0.62 J -- -- -- 0.9 J -- < 0.21 UJ -- < 0.14 U 90

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.15 U -- 3.9 -- < 0.24 UJ -- 2 J -- 3.3 -- -- -- 2 J -- < 0.42 UJ -- < 0.29 U 160

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 3 -- < 0.089 U -- 0.63 J -- 0.63 J -- -- -- 0.88 J -- < 0.21 UJ -- < 0.14 U 140 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.14 U -- 1.9 -- < 0.089 U -- 1.2 -- 4.7 -- -- -- 1.6 -- < 0.21 UJ -- < 0.14 U 65

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 1.5 1.6 J+ < 0.78 U < 0.89 U < 0.089 U < 0.089 U 0.49 J 0.98 J 4.7 3.2 -- -- 3.2 3.9 < 0.4 U 0.22 J < 0.14 U < 0.14 U 21

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.075 J < 0.073 U 0.84 J 1.2 < 0.089 U < 0.089 U < 0.39 U 1.6 0.32 J 3.5 -- -- 1.8 3.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 96

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.2 J- 1.2 < 0.089 U < 0.089 U 0.59 J 0.74 J 0.26 J 1.8 -- -- 2.7 2.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U 110

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.084 U -- 1.1 -- < 0.057 U -- < 0.24 U -- < 0.11 U -- -- -- 4 -- < 0.26 UJ -- < 0.12 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.79 U -- < 0.089 U -- < 0.39 U -- < 0.17 U -- -- -- 3.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 0.67 J -- < 0.089 U -- < 0.39 U -- 0.94 J -- -- -- 3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 0.71 J -- < 0.089 U -- < 0.39 U -- 0.2 J -- -- -- 2.6 -- 0.23 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.48 U -- < 0.089 U -- < 0.39 U -- < 0.56 U -- -- -- 2.6 -- < 0.21 UJ -- < 0.31 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 0.73 J -- < 0.089 U -- < 0.39 U -- 0.2 J -- -- -- 2.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1 -- < 0.089 U -- < 0.39 U -- < 0.88 U -- -- -- 2.9 -- < 0.21 UJ -- < 0.29 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.19 U < 0.16 U 1.8 1.9 < 0.16 U < 0.22 U 1.2 J+ 1.2 J+ 1.5 J+ 33.5 -- -- 21.2 21.7 < 0.21 UJ < 0.31 UJ < 0.39 U < 0.26 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U < 0.073 U < 0.073 U 0.61 J 0.63 J < 0.089 U < 0.089 U < 0.39 U 0.78 J 0.56 J 0.82 J -- -- 3.4 3.8 < 0.24 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.26 J 0.23 J 0.59 J- 0.38 J- < 0.089 U < 0.089 U < 0.39 U 0.69 J 0.3 J 2.5 -- -- 17.6 18.8 < 0.21 UJ 0.32 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.62 U -- < 0.82 U -- < 0.19 U -- 0.39 J -- < 0.15 U -- -- -- 8.4 -- 0.4 J -- < 0.32 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.54 J -- 5.1 -- 2.8 -- 1.3 -- 5.1 -- -- -- 8.3 -- 0.49 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.24 J -- 4.2 -- 0.15 J -- 0.57 J -- 1.2 -- -- -- 3 -- 0.39 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.69 U -- 6 -- 0.55 J -- 0.97 J -- < 1 U -- -- -- 8.9 -- 0.76 J -- < 0.91 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 3.2 -- < 0.15 U -- 0.9 J -- 3.2 -- -- -- 5.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 4.1 -- < 0.089 U -- 0.8 J -- 0.58 J -- -- -- 6.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.7 -- < 0.089 U -- 0.48 J -- 1.9 -- -- -- 4.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 4.4 5.3 < 0.089 U < 0.089 U 1.2 J+ 1.5 J+ < 0.9 U 11.1 J -- -- 4.1 4.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 2.2 4.3 < 0.089 U 0.1 J < 0.39 U 1.3 0.23 J 2.3 -- -- 8.3 10.6 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.55 J 0.55 J 3.2 4 < 0.089 U 0.14 J 0.44 J 1.7 0.25 J 1.9 -- -- 30.1 29.8 0.33 J- 0.33 J < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.77 U -- < 0.94 U -- < 0.057 U -- 0.75 J -- < 0.53 U -- -- -- 6 -- 2.8 J -- < 0.49 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.6 J -- < 0.74 U -- < 0.089 U -- 0.61 J -- < 0.79 U -- -- -- 5.9 -- 1.9 J -- < 0.21 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.6 J -- 2.7 -- 0.13 J -- 5.2 -- 3.4 -- -- -- 8.1 -- 1.3 J -- 0.25 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.62 U -- < 0.42 U -- < 0.089 U -- 0.62 J -- 1.2 -- -- -- 5.7 -- 0.6 J -- < 0.19 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.51 J -- 0.46 J- -- < 0.19 UJ -- 0.42 J -- 3.1 -- -- -- 6.2 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.44 J -- 0.7 J -- < 0.089 U -- < 0.39 U -- 0.67 J -- -- -- 5.2 -- 0.38 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.41 U -- < 0.81 U -- < 0.089 U -- 0.65 J -- 1.4 -- -- -- 3.6 -- 0.32 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.49 U < 0.48 U < 0.68 U < 0.89 U < 0.089 U < 0.089 U 0.41 J 0.97 J 3.1 5 -- -- 5.5 6.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 UJ < 0.5 U < 0.5 U 0.5 J 0.47 J 0.46 J 0.44 J < 0.089 U < 0.089 U 0.42 J 0.85 J 1.6 2 -- -- 4.3 4.9 < 0.37 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.41 J 0.35 J 0.56 J- 0.42 J < 0.089 U < 0.089 U 0.4 J 1.3 2.5 5.8 -- -- 4.5 3.4 0.51 J- 0.54 J < 0.14 U < 0.14 U < 2 U

Page 17: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 17 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

013014002 PO106 01/30/2014

042514037 (N) PO106 (N) 04/25/2014

071114083 PO106 07/11/2014

101514018 PO106 10/15/2014

012915032 PO106 01/29/2015

041615041 (N) PO106 (N) 04/16/2015

071515026 PO106 07/15/2015

102815031 PO106 10/28/2015

012916127 PO106 01/29/2016

041216020 PO106 04/12/2016

013014004 PO107 01/30/2014

042214010 (N) PO107 (N) 04/22/2014

071114089 PO107 07/11/2014

102114043 (N) PO107 (N) 10/21/2014

012815025 PO107 01/28/2015

041515037 PO107 04/15/2015

071415016 PO107 07/14/2015

102815037 PO107 10/28/2015

012716109 (N) PO107 (N) 01/27/2016

041216027 PO107 04/12/2016

042214007 PQ101 04/22/2014

070814053 PQ101 07/08/2014

101414008 PQ101 10/14/2014

021315043 PQ101 02/13/2015

041415011 PQ101 04/14/2015

042214005 PQ102 04/22/2014

070814052 PQ102 07/08/2014

101314004 PQ102 10/13/2014

021315044 PQ102 02/13/2015

041415014 PQ102 04/14/2015

071415011 (N) PQ102 (N) 07/14/2015

102715012 PQ102 10/27/2015

012616104 PQ102 01/26/2016

041516055 PQ102 04/15/2016

042214009 PQ103 04/22/2014

071014070 PQ103 07/10/2014

101414010 PQ103 10/14/2014

012915035 PQ103 01/29/2015

041315003 (N) PQ103 (N) 04/13/2015

071415014 PQ103 07/14/2015

102815035 PQ103 10/28/2015

012716111 PQ103 01/27/2016

041116004 PQ103 04/11/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.72 U -- < 0.63 U -- < 0.057 U -- 0.3 J -- < 0.15 U -- -- -- 5.1 -- 0.51 J -- < 0.084 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 1.1 -- 1.3 -- 0.51 J -- 0.81 J -- < 0.52 U -- -- -- 5.2 -- 0.65 J -- 1.2 < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.44 J -- 0.84 J -- < 0.089 U -- 0.4 J -- < 0.68 U -- -- -- 4.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.25 U -- < 0.68 U -- < 0.089 U -- < 0.39 U -- < 0.51 U -- -- -- 3.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.3 J -- 0.42 J- -- < 0.15 UJ -- 0.4 J -- 1.7 -- -- -- 3.5 -- < 0.21 UJ -- < 0.14 U 2.8 J+

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.22 J -- 0.66 J -- < 0.089 U -- 0.64 J -- 1.6 -- -- -- 2.9 -- 0.21 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.17 U -- < 0.91 U -- < 0.089 U -- 0.76 J -- 3.1 -- -- -- 3.5 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.2 U < 0.15 U < 0.6 U < 0.85 U < 0.089 U < 0.089 U < 0.39 U 1.5 5.7 3.5 -- -- 2.9 3.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.48 J 0.22 J 0.18 J 0.41 J < 0.089 U < 0.089 U < 0.39 U 0.85 J 0.59 J 1.2 -- -- 1.2 2 < 0.24 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.15 J 0.15 J 0.36 J- 0.35 J- < 0.089 U < 0.089 U 0.44 J 0.45 J 2.4 5.6 -- -- 2.6 1.6 0.26 J- < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.44 U < 1.3 U < 0.5 U < 0.5 U -- < 0.54 U -- < 0.75 U -- < 0.057 U -- 0.33 J -- < 0.3 U -- -- -- 11.6 -- < 0.26 UJ -- < 0.11 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.35 U -- 1.3 -- < 0.089 U -- 0.9 J -- 0.54 J -- -- -- 9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.66 J -- 1.2 -- < 0.089 U -- 0.52 J -- 0.69 J -- -- -- 10.6 -- 0.61 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.36 U -- 0.98 J -- 0.09 J -- < 0.39 U -- < 0.36 U -- -- -- 10.2 -- < 0.21 UJ -- < 0.23 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.27 J -- 0.54 J- -- < 0.2 UJ -- < 0.39 U -- 2.6 -- -- -- 7.9 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.19 J -- 0.97 J -- < 0.089 U -- 0.49 J -- 1.2 -- -- -- 6.8 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.34 U -- < 0.99 U -- < 0.15 U -- 0.82 J -- 6.1 -- -- -- 10.4 -- < 0.21 UJ -- < 0.58 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.078 U < 0.13 U 1.1 J+ 1.3 J+ < 0.089 U < 0.089 U < 0.39 U 1.1 < 0.04 U 3.8 -- -- 9.4 10.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.12 J 0.13 J 0.68 J 0.6 J < 0.089 U 0.092 J 0.4 J 0.78 J 0.66 J 3.5 -- -- 6.7 7.5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.16 J 0.18 J 0.24 J- < 0.099 UJ < 0.089 U < 0.089 U < 0.39 U 1.1 1.5 11.7 -- -- 3.8 3.1 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.64 U -- 1.4 -- < 0.089 U -- 0.96 J -- 0.48 J -- -- -- 17.2 -- 0.25 J -- < 0.24 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.25 J -- 1.1 -- < 0.089 U -- < 0.39 U -- 0.063 J -- -- -- 9.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.074 J -- 1.8 -- < 0.089 U -- < 0.39 U -- 0.16 J- -- < 0.1 UJ -- 7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.91 U -- < 0.089 U -- < 0.39 U -- < 0.19 U -- -- -- 5.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.4 -- < 0.089 U -- < 0.39 U -- 0.26 J -- -- -- 5.7 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.95 U -- 1.4 -- < 0.089 U -- < 0.39 U -- 0.22 J -- -- -- 11.2 -- 0.92 J -- < 0.27 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.52 J -- 0.84 J -- < 0.089 U -- < 0.39 U -- 0.3 J -- -- -- 8.3 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.16 J -- 0.98 J -- < 0.089 U -- < 0.39 U -- 1.3 -- < 0.1 UJ -- 6.5 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.19 J -- < 0.95 U -- < 0.089 U -- 21.2 -- 1.1 -- -- -- 14 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.2 J -- 0.76 J -- < 0.089 U -- 0.69 J -- 0.88 J -- -- -- 5.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.1 U -- < 0.55 U -- < 0.089 U -- 0.92 J -- 1.1 -- -- -- 5.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.16 U < 0.17 U < 0.55 U 1.1 J+ < 0.089 U < 0.089 U 1.2 J+ 2 J+ < 0.8 U 1.9 -- -- 4.4 5.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.1 J 0.17 J 1.4 2.2 < 0.089 U < 0.089 U < 0.39 U 3.7 0.39 J 3.2 -- -- 3.5 7.8 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.64 J 0.49 J 0.82 J 2 0.1 J < 0.089 U 0.59 J 5.5 1 5.7 -- -- 2.5 8 0.72 J- 0.62 J 0.33 J < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.85 U -- 0.85 J -- < 0.089 U -- < 0.39 U -- 0.11 J -- -- -- 15.3 -- 4.5 J -- < 0.17 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.8 J -- 0.99 J -- < 0.089 U -- < 0.39 U -- 0.53 J -- -- -- 11.2 -- 0.58 J -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.38 J -- 1.4 -- 0.28 J -- < 0.39 U -- 1.2 -- < 0.1 UJ -- 9.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.11 J -- 1.2 -- < 0.18 UJ -- 0.94 J -- 4.1 -- -- -- 6.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.073 J -- 1.2 -- < 0.089 U -- 0.52 J -- 0.93 J -- -- -- 5.2 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- < 0.76 U -- < 0.089 U -- < 0.39 U -- 1.2 -- -- -- 7.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.3 J+ 1.3 J+ < 0.089 U < 0.089 U < 0.39 U 0.44 J < 0.37 U < 0.97 U -- -- 5.1 8.4 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 UJ < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.13 J < 0.073 U 0.58 J 1.2 < 0.089 U < 0.089 U 0.46 J 0.51 J 1.6 8.4 -- -- 3.1 5 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.1 1 < 0.089 U < 0.089 U 0.45 J 0.71 J 3.5 7.6 -- -- 2.7 4.1 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

Page 18: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

NOTE: SEE NOTES AND LEGEND AT THE END OF TABLES (Table 1 Page 9 and Table 2 Page 18) for acroynms, blue text, flagged text, and other information

Crawford MGP GW through July 2016 page 18 of 18

Crawford Station Former MGP Remedial Investigation Crawford Station Former MGP SiteChicago, ILEPA ID# ILN000510192

Unique Field ID Sample Location Sample Date

Shaded Groundwater SL: Underline Tap Water SL:

Italics Residential GW Vapor SL: Bold Industrial GW Vapor SL:

042214006 PQ104 04/22/2014

070814054 PQ104 07/08/2014

101314003 PQ104 10/13/2014

021215038 (N) PQ104 (N) 02/12/2015

041315002 PQ104 04/13/2015

071415008 PQ104 07/14/2015

102715011 PQ104 10/27/2015

012616103 PQ104 01/26/2016

041116002 PQ104 04/11/2016

042214008 PU101 04/22/2014

070714051 PU101 07/07/2014

101314001 (N) PU101 (N) 10/13/2014

021315041 PU101 02/13/2015

041315001 PU101 04/13/2015

071315001 PU101 07/13/2015

102615001 PU101 10/26/2015

012616101 PU101 01/26/2016

041116001 PU101 04/11/2016

041416047 (N) PV101 (N) 04/14/2016

070616005 PV101 07/06/2016

Table 2: BTEX, Volatile Organic Compounds, Metal Results (Page 10-18)

BTEX BTEX BTEX BTEX VOC VOC Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Metal Cyanide

Ben

zene

(µg/

l)

Eth

ylbe

nzen

e (µ

g/l)

Tolu

ene

(µg/

l)

Xyl

enes

, Tot

al (µ

g/l)

1,2,

4-Tr

imet

hylb

enze

ne (µ

g/l)

1,3,

5-Tr

imet

hylb

enze

ne (µ

g/l)

Ant

imon

y, D

isso

lved

(µg/

l)

Ant

imon

y, T

otal

(µg/

l)

Ars

enic

, Dis

solv

ed (µ

g/l)

Ars

enic

, Tot

al (µ

g/l)

Cad

miu

m, D

isso

lved

(µg/

l)

Cad

miu

m, T

otal

(µg/

l)

Chr

omiu

m, D

isso

lved

(µg/

l)

Chr

omiu

m, T

otal

(µg/

l)

Lead

, Dis

solv

ed (µ

g/l)

Lead

, Tot

al (µ

g/l)

Mer

cury

, Dis

solv

ed (µ

g/l)

Mer

cury

, Tot

al (µ

g/l)

Nic

kel,

Dis

solv

ed (µ

g/l)

Nic

kel,

Tota

l (µg

/l)

Sel

eniu

m, D

isso

lved

(µg/

l)

Sel

eniu

m, T

otal

(µg/

l)

Thal

lium

, Dis

solv

ed (µ

g/l)

Thal

lium

, Tot

al (µ

g/l)

Cya

nide

, Ava

ilabl

e (µ

g/l)

5 700 1,000 10,000 NS 70 6 6 10 10 5 5 100 100 7.5 7.5 2 2 100 100 50 50 2 2 2000.46 1.5 1,100 190 15 120 7.8 7.8 0.052 0.052 9.2 9.2 22,000 22,000 15 15 5.7 5.7 390 390 100 100 0.2 0.2 201.6 3.5 19,000 380 29 29 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS6.9 15 81,000 1,600 120 120 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS

DRAFT

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 1.1 U -- 3.1 -- < 0.18 U -- 12.6 -- 5.5 -- -- -- 17.5 -- 1.6 J -- < 0.42 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.63 J -- 0.57 J -- < 0.089 U -- 0.4 J -- 0.3 J -- -- -- 6.4 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.46 J -- 0.86 J -- < 0.089 U -- 0.86 J -- 0.89 J -- < 0.1 UJ -- 6.7 -- < 0.21 UJ -- < 0.14 U 2.2

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.28 J- -- < 0.59 U -- < 0.089 U -- 5.7 -- < 0.64 U -- -- -- 9 -- < 0.21 UJ -- < 0.31 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- 0.23 J -- 0.58 J -- < 0.089 U -- 0.78 J -- 0.8 J -- -- -- 4.1 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.11 U -- < 0.6 U -- < 0.089 U -- 1.3 -- 1.7 -- -- -- 5.6 -- < 0.21 UJ -- < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.11 U < 0.074 U < 0.81 U < 0.94 U < 0.089 U < 0.089 U 1 J+ 1.4 J+ < 0.56 U < 0.7 U -- -- 4.3 4.9 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.12 J 0.14 J 0.56 J 0.64 J < 0.089 U < 0.089 U < 0.39 U 0.91 J 0.45 J 2.5 -- -- 1.8 3 < 0.21 UJ < 0.21 UJ < 0.14 U < 0.14 U < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.14 J 0.23 J < 0.9 U 0.96 J < 0.089 U 0.19 J 0.52 J 0.78 J < 0.76 U 1.6 -- -- 3 2.8 < 0.21 UJ < 0.21 UJ < 0.14 U 0.26 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.8 -- < 0.089 U -- 0.46 J -- 0.18 J -- -- -- 0.37 J -- < 0.21 UJ -- < 0.14 U 240

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.4 -- < 0.089 U -- < 0.39 U -- < 0.04 U -- -- -- 0.4 J -- < 0.21 UJ -- < 0.14 U 100

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.7 -- < 0.089 U -- < 0.39 U -- 0.1 J- -- < 0.1 UJ -- 0.49 J -- < 0.21 UJ -- < 0.14 U 120 J

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 UJ -- 1.5 -- < 0.089 U -- 0.47 J -- < 0.04 U -- -- -- 0.23 J -- 0.24 J -- < 0.14 U 190

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 1.8 -- < 0.089 U -- 0.5 J -- 0.048 J -- -- -- 0.72 J -- 0.28 J- -- < 0.14 U 120

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U -- < 0.073 U -- 2.2 -- < 0.089 U -- 2.1 -- 1.5 -- -- -- 1.7 -- < 0.21 UJ -- < 0.14 U 33 J-

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 2.2 3.5 < 0.089 U < 0.089 U 1.4 J+ 1.9 J+ < 0.12 U < 0.78 U -- -- < 0.58 U 1.1 J+ < 0.21 UJ < 0.23 UJ < 0.14 U < 0.14 U 120

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.073 U < 0.073 U 1.3 1.5 < 0.089 U < 0.089 U 0.62 J 0.62 J 0.18 J 0.13 J -- -- 0.66 J 0.35 J < 0.36 UJ < 0.21 UJ < 0.14 U < 0.14 U --

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.46 J 0.11 J 2.1 2.1 0.38 J < 0.089 U 1.2 0.66 J 1.1 0.25 J -- -- 2.3 0.3 J 0.83 J 0.3 J 0.62 J 0.21 J 97

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U 0.77 J 1.2 < 0.98 U 1.4 < 0.089 U 0.43 J 1.1 J+ 0.81 J+ 2.9 3.9 -- -- 25.9 24.6 < 0.21 UJ 0.67 J < 0.24 U 0.73 J < 2 U

< 0.5 U < 0.5 U < 0.5 U < 1.5 U < 0.5 U < 0.5 U < 0.21 U < 0.17 U 1.2 1.3 < 0.089 U < 0.089 U < 0.39 U < 0.39 U < 0.07 U < 0.11 U -- -- 12.8 13 < 0.21 UJ < 0.21 UJ < 0.16 U < 0.14 U < 1.1 U

NotesGaps in sampling events are a result of either dry wells or inaccessible wells. In addition, the Group I Parcel wells are sampled on a semi-annual basis as of July 2016, with the exception of wells near the Group II Parcel. Parcel S well samples pending-- = Analysis not performed< = Concentration is less than reported limitU = Concentration was not detected above the reported limitJ = Indicates an estimated value.J+ = Indicates a value estimated high Legend for Exceedance:R = Result rejected during validationNS = No Standard Blue Text Excceds an SL(N) = Normalized sample locations created from combining parent and field duplicate samples following EPA protocol Shaded Exceeds Groundwater SLLab comments and definitions can be found in associated laboratory and validation reports. Underline Exceeds Tapwater SLSL = Screening Level italics Exceeds Residential Groundwater-Vapor SLQC = Quality Control Field Duplicate Sample Bold Exceeds Industrial Groundwater-Vapor SLBTEX = Benzene, Toluene, Ethylbenzene and XylenePAH = Polycyclic Aromatic HydrocarbonSVOC = Semi-Volatile Organic CompoundVOC = Volatile Organic Compoundµg/L = micrograms per literAll Screening Levels are shown for comparison purposes only and are not remediation objectives or standards except for the Maximum Contaminant Levels (MCL). SLs shown on this table were presented in the Multi-Site Risk Assessment Framework Addendum Revision 5 (Exponent, July 2016). Groundwater SL shown on this table are 10-6 risk value or the MCLs. Risk-based groundwater SLs, tapwater SLs, and VI SLs are non-enforceable SLs.

Page 19: Crawford Station Former MGP Remedial Investigation ...NS NS NS NVT NS NS NS NS NS NS NS NS NS 20 NS NS NS NS. 020414021 MWA101 02/04/2014 0.72 0.91 0.45 0.39 0.054 J < 0.053 U < 0.038

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C H I C A G O S A N I T A R Y A N D S H I P C A N A L

MWA101/PA101

MWA102/PA102

PA103

MWB101/PB101

MWB102/PB102

MWO103/PO103

CPS-MW1DCPS-MW1S

CPS-MW2

CPS-MW3 CPS-MW4

CPS-MW5

CPS-MW6 CPS-MW7

CPS-MW8

MWB103/PB103MWB104/PB104

MWC101PC101

PC103 PC103S

PE101

PE102

MWV101PV101

A

B

CD

E

F G

H

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J

K

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M

N

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P

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U

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PK101 PK102

PK103PK104

MWO101/PO101

MWO102/PO102

MWO104/PO104

MWO106/PO106

PCO-MW004

PCO-MW005

PCO-MW006PCO-MW015

PCO-MW018

PO105

PO107

MWQ102/PQ102

MWQ104/PQ104A

PQ101

PQ103

MWU101/PU101A

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EXIS

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³"D EXISTING MONITORING WELL LOCATION

SHEET PILE WALLPROPOSED SHEET PILE WALLREMOVAL ACTION AREAS (ACTUAL)GROUP IGROUP IIGROUP IIIGROUP IVFORMER CRAWFORD STATION MGPSITE BOUNDARY STUDY AREA

Note: CPS wells were sampled at the end of December 2016