Attachment 3.8.1 - Appendix H1 Phase I Environmental Site Assessment Parcel A.pdf — Chula Vista City Council, November 18, 2025 (part 15 of 24)

LocationSample Name
Sample Date
Sample Depth (bgs)
SVOCs (mg/kg)
AcenaphtheneAcenaphthyleneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneBenzo(b)fluorantheneBenzo(g,h,i)peryleneBenzo(k)fluorantheneChryseneDibenz(a,h)anthraceneDimethyl phthalateFluorantheneFluoreneIndeno(1,2,3‐cd)pyrene PhenanthrenePyrene
VOCs (mg/kg)
1,1,1‐Trichloroethane
1,2,3‐Trimethylbenzene
1,2,4‐Trimethylbenzene
1,3,5‐Trimethylbenzene
2‐Butanone (Methyl Ethyl Ketone)
AcetoneBenzeneChloroform (Trichloromethane)cis‐1,2‐Dichloroethene Cymene (p‐Isopropyltoluene)
Methyl Tert Butyl Ether
Methylene chlorideNaphthalenen‐Butylbenzene
Tetrachloroethenetrans‐1,2‐Dichloroethene
Trichloroethene
Notes and Abbreviations:

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

B29‐11 B29‐11 B29‐12 B29‐12 B29‐13 B29‐13 B29‐14 B29‐14 B29‐15 B29‐15 B29‐16 B29‐16 B29‐17 B29‐17 B29‐11‐1 B29‐11‐5 B29‐12‐1 B29‐12‐5 B29‐13‐4 B29‐13‐5 B29‐14‐1.5 B29‐14‐3 B29‐15‐1 B29‐15‐3 B29‐16‐1 B29‐16‐3 B29‐17‐1 B29‐17‐3 6/28/2016 6/28/2016 6/28/2016 6/28/2016 6/28/2016 6/28/2016 6/29/2016 6/29/2016 6/29/2016 6/29/2016 6/28/2016 6/28/2016 6/29/2016 6/29/2016

0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 3.5 ‐ 4 (ft) 4.5 ‐ 5 (ft) 1 ‐ 1.5 (ft) 2.5 ‐ 3 (ft) 0.5 ‐ 1 (ft) 2.5 ‐ 3 (ft) 0.5 ‐ 1 (ft) 2.5 ‐ 3 (ft) 0.5 ‐ 1 (ft) 2.5 ‐ 3 (ft) < 0.063 ‐ < 0.004 ‐ < 0.004 ‐‐‐ < 0.004 < 0.004 ‐‐‐‐
< 0.059 ‐ < 0.0042 ‐ < 0.0041 ‐‐‐ < 0.0041 < 0.0042 ‐‐‐‐ < 0.063 ‐ < 0.002 ‐ < 0.002 ‐‐‐ < 0.002 < 0.002 ‐‐‐‐
< 0.057 ‐ < 0.0025 ‐ < 0.0024 ‐‐‐ < 0.0024 < 0.0025 ‐‐‐‐ < 0.054 ‐ 0.048 ‐ < 0.002 ‐‐‐ < 0.002 < 0.002 ‐‐‐‐
< 0.063 ‐ 0.071 ‐ < 0.0021 ‐‐‐ < 0.0021 < 0.0021 ‐‐‐‐
< 0.055 ‐ 0.025 ‐ < 0.0018 ‐‐‐ < 0.0018 < 0.0018 ‐‐‐‐
< 0.065 ‐ 0.065 ‐ < 0.0017 ‐‐‐ < 0.0017 < 0.0017 ‐‐‐‐
< 0.064 ‐ < 0.0021 ‐ < 0.002 ‐‐‐ < 0.002 < 0.0021 ‐‐‐‐
< 0.046 ‐ 0.63 ‐ < 0.0029 ‐‐‐ < 0.0029 < 0.0029 ‐‐‐‐

0.25 J ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.062 ‐ < 0.0021 ‐ < 0.0021 ‐‐‐ < 0.0021 < 0.0021 ‐‐‐‐ < 0.063 ‐ < 0.0017 ‐ < 0.0017 ‐‐‐ < 0.0017 < 0.0017 ‐‐‐‐ < 0.053 ‐ 0.72 ‐ < 0.0022 ‐‐‐ < 0.0022 < 0.0022 ‐‐‐‐
< 0.068 ‐ 0.0063 J ‐ < 0.0021 ‐‐‐ 0.0022 J < 0.0021 ‐‐‐‐ < 0.076 ‐ 0.017 ‐ < 0.0029 ‐‐‐ < 0.0029 < 0.0029 ‐‐‐‐
< 0.00022 < 0.00023 < 0.00023 < 0.00022 < 0.00023 < 0.00023 < 0.00023 < 0.00022 < 0.00022 < 0.00022 < 0.00023 < 0.00022 < 0.00023 < 0.00023 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00058 < 0.00061 < 0.00061 < 0.00059 < 0.0006 < 0.00061 < 0.00059 < 0.00056 < 0.00058 < 0.00058 < 0.0006 < 0.00057 < 0.00059 < 0.0006 < 0.00054 < 0.00057 < 0.00057 < 0.00055 < 0.00056 < 0.00057 < 0.00056 < 0.00052 < 0.00054 < 0.00055 < 0.00057 < 0.00054 < 0.00055 < 0.00056 < 0.0037 < 0.0039 < 0.0039 < 0.0038 < 0.0039 < 0.0039 < 0.0038 < 0.0036 < 0.0037 < 0.0038 < 0.0039 < 0.0037 < 0.0038 < 0.0038 < 0.0062 < 0.0065 < 0.0065 < 0.0062 < 0.0064 < 0.0065 0.012 J < 0.006 0.01 J < 0.0062 < 0.0064 < 0.0061 < 0.0063 0.0069 J < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00012 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00024 < 0.00025 < 0.00025 < 0.00024 < 0.00025 < 0.00025 < 0.00024 < 0.00023 < 0.00024 < 0.00024 < 0.00025 < 0.00023 < 0.00024 < 0.00024 < 0.00028 < 0.00029 < 0.00029 < 0.00028 < 0.00029 < 0.00029 0.00032 J 0.00047 J < 0.00028 < 0.00028 < 0.00029 < 0.00027 < 0.00028 < 0.00028 < 0.00062 < 0.00065 < 0.00065 < 0.00063 < 0.00065 < 0.00065 < 0.00064 < 0.0006 < 0.00062 < 0.00063 < 0.00065 < 0.00062 < 0.00063 < 0.00064 < 0.00029 < 0.00031 < 0.00031 < 0.00029 < 0.0003 < 0.00031 < 0.0003 < 0.00028 < 0.00029 < 0.00029 < 0.0003 < 0.00029 < 0.0003 < 0.0003 < 0.0013 < 0.0014 < 0.0014 < 0.0013 < 0.0014 < 0.0014 < 0.0014 < 0.0013 < 0.0013 < 0.0013 < 0.0014 < 0.0013 < 0.0013 < 0.0014 < 0.0008 < 0.00084 < 0.00084 < 0.00081 < 0.00084 < 0.00085 < 0.00083 < 0.00078 < 0.0008 < 0.00081 < 0.00084 < 0.0008 < 0.00082 < 0.00083 < 0.00015 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00015 < 0.00015 < 0.00016 < 0.00016 < 0.00015 < 0.00016 < 0.00016 < 0.00021 < 0.00022 < 0.00022 < 0.00021 < 0.00022 < 0.00022 < 0.00021 < 0.0002 < 0.00021 < 0.00021 < 0.00022 < 0.00021 < 0.00021 < 0.00021 < 0.0005 < 0.00052 < 0.00052 < 0.0005 < 0.00052 < 0.00053 < 0.00051 < 0.00048 < 0.0005 < 0.0005 < 0.00052 < 0.0005 < 0.00051 < 0.00051 < 0.0003 < 0.00031 < 0.00031 < 0.0003 < 0.00031 < 0.00031 0.0042 J 0.002 J < 0.0003 0.0018 J < 0.00031 < 0.00029 < 0.0003 < 0.00031 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 9 of 26 ends

1.5 1.56 2.09 1.49 1.41 1.61 7.59 ‐‐‐‐‐‐‐

32.6 35.8 26.8 52.7 77.4 38.8 40.7 ‐‐‐‐‐‐‐

0.273 0.501 0.6 0.358 0.211 J 0.241 0.152 J ‐‐‐‐‐‐‐

0.215 J 0.239 J 0.283 J 0.163 J 0.406 J 0.158 J 0.424 J ‐‐‐‐‐‐‐

9.26 12.6 14.2 9.39 8.11 7.29 9.37 ‐‐‐‐‐‐‐6.41 8.37 6.4 5.38 4.37 4.48 6.2 ‐‐‐‐‐‐‐6.02 5.38 5.43 4.57 7.17 4.2 12.8 ‐‐‐‐‐‐‐6.95 5.78 5.29 3.54 41 5.14 2.02 ‐‐‐‐‐‐‐

0.0168 J 0.02 J 0.0233 J 0.0108 J 0.0359 J < 0.00559 0.00898 J ‐‐‐‐‐‐‐ < 0.127 < 0.128 < 0.131 < 0.131 < 0.137 < 0.126 0.271 ‐‐‐‐‐‐‐

7.75 7.58 8.09 5.63 3.61 4.37 3.41 ‐‐‐‐‐‐‐
< 0.288 < 0.291 < 0.297 < 0.298 < 0.312 < 0.287 1.14 ‐‐‐‐‐‐‐ < 0.0824 < 0.0832 < 0.0849 < 0.0853 < 0.0893 < 0.082 0.114 J ‐‐‐‐‐‐‐ < 0.146 0.21 J < 0.15 < 0.151 0.197 J < 0.145 < 0.151 ‐‐‐‐‐‐‐

24.5 34.4 35.8 26 20.8 22.8 27.8 ‐‐‐‐‐‐‐17.8 23.6 28.6 18.5 255 29.6 41.3 ‐‐‐‐‐‐‐ < 0.021 < 0.021 < 0.021 < 0.021 < 0.021 < 0.021 < 0.021 ‐‐‐‐‐‐‐ < 0.042 < 0.042 < 0.042 < 0.042 < 0.042 < 0.042 < 0.043 ‐‐‐‐‐‐‐ < 0.025 < 0.025 < 0.025 < 0.025 < 0.025 < 0.025 < 0.025 ‐‐‐‐‐‐‐ < 0.037 < 0.037 < 0.037 < 0.037 < 0.037 < 0.037 < 0.037 ‐‐‐‐‐‐‐ < 0.032 < 0.032 < 0.032 < 0.032 < 0.032 < 0.032 < 0.032 ‐‐‐‐‐‐‐ < 0.032 < 0.031 < 0.032 < 0.032 < 0.032 < 0.032 < 0.032 ‐‐‐‐‐‐‐ < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.03 < 0.031 ‐‐‐‐‐‐‐ < 0.035 < 0.034 < 0.035 < 0.035 < 0.035 < 0.035 < 0.035 ‐‐‐‐‐‐‐ < 0.033 < 0.033 < 0.033 < 0.033 < 0.033 < 0.033 < 0.034 ‐‐‐‐‐‐‐ < 0.042 < 0.042 < 0.042 < 0.042 < 0.042 < 0.042 < 0.043 ‐‐‐‐‐‐‐ < 0.0024 ‐ < 0.0024 ‐ < 0.0024 ‐ < 0.0024 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.0037 ‐ < 0.0037 ‐ < 0.0037 ‐ < 0.0037 ‐‐‐‐‐‐‐
< 0.0025 ‐ < 0.0025 ‐ < 0.0025 ‐ < 0.0025 ‐‐‐‐‐‐‐
< 0.026 ‐ < 0.026 ‐ < 0.026 ‐ < 0.026 ‐‐‐‐‐‐‐
< 0.0044 ‐ < 0.0044 ‐ < 0.0044 ‐ < 0.0044 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.002 ‐ < 0.002 ‐ < 0.002 ‐ < 0.002 ‐‐‐‐‐‐‐
< 0.0024 ‐ < 0.0023 ‐ < 0.0023 ‐ < 0.0024 ‐‐‐‐‐‐‐
< 0.0026 ‐ < 0.0026 ‐ < 0.0026 ‐ < 0.0026 ‐‐‐‐‐‐‐
< 0.0024 ‐ < 0.0023 ‐ < 0.0023 ‐ < 0.0024 ‐‐‐‐‐‐‐
< 0.003 ‐ < 0.003 ‐ < 0.003 ‐ < 0.003 ‐‐‐‐‐‐‐
< 0.0025 ‐ < 0.0025 ‐ < 0.0025 ‐ < 0.0025 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐ < 0.0022 ‐‐‐‐‐‐‐
< 0.0037 ‐ < 0.0037 ‐ < 0.0037 ‐ < 0.0037 ‐‐‐‐‐‐‐
< 0.0027 ‐ < 0.0027 ‐ < 0.0027 ‐ < 0.0027 ‐‐‐‐‐‐‐
< 0.045 ‐ < 0.045 ‐ < 0.045 ‐ < 0.045 ‐‐‐‐‐‐‐
HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 10 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

B29‐18 B29‐18 B29‐19 B29‐19 B29‐20 B29‐20 B29‐21 B29‐22 B29‐22 B29‐23 B29‐23 B29‐24 B29‐24 B29‐25 B29‐18‐1.5 B29‐18‐3 B29‐19‐2 B29‐19‐5 B29‐20‐1 B29‐20‐2 B29‐21‐1 B29‐22‐010 B29‐22‐050 B29‐23‐010 B29‐23‐050 B29‐24‐010 B29‐24‐050 B29‐25‐010 6/29/2016 6/29/2016 6/29/2016 6/29/2016 6/27/2016 6/27/2016 6/28/2016 1/10/2020 1/10/2020 1/10/2020 1/10/2020 1/14/2020 1/14/2020 1/9/2020 1 ‐ 1.5 (ft) 2.5 ‐ 3 (ft) 1.5 ‐ 2 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 1.5 ‐ 2 (ft) 0.5 ‐ 1 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) < 0.004 ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0042 ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.002 ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0025 ‐‐‐‐‐‐‐‐‐‐‐‐‐

0.015 ‐‐‐‐‐‐‐‐‐‐‐‐‐0.015 ‐‐‐‐‐‐‐‐‐‐‐‐‐0.018 ‐‐‐‐‐‐‐‐‐‐‐‐‐0.031 ‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.0021 ‐‐‐‐‐‐‐‐‐‐‐‐‐

0.19 ‐‐‐‐‐‐‐‐‐‐‐‐‐
‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0021 ‐‐‐‐‐‐‐‐‐‐‐‐‐< 0.0017 ‐‐‐‐‐‐‐‐‐‐‐‐‐

0.33 ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0021 ‐‐‐‐‐‐‐‐‐‐‐‐‐

0.0037 J ‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00022 < 0.00022 < 0.00023 < 0.00023 < 0.00022 < 0.00022 < 0.00023 < 0.000275 < 0.000275 < 0.000275 < 0.000275 < 0.000275 < 0.000275 < 0.000275 ‐‐‐‐‐‐‐ < 0.00115 < 0.00115 < 0.00115 < 0.00115 < 0.00115 < 0.00115 < 0.00115 < 0.00057 < 0.00058 < 0.0006 < 0.00061 < 0.00057 < 0.00058 0.0052 < 0.00116 < 0.00116 < 0.00116 < 0.00116 0.00117 J < 0.00116 < 0.00116 < 0.00054 < 0.00054 < 0.00056 < 0.00057 < 0.00053 < 0.00054 0.0018 J < 0.00108 < 0.00108 < 0.00108 < 0.00108 < 0.00108 < 0.00108 < 0.00108 < 0.0037 < 0.0037 < 0.0038 < 0.0039 < 0.0036 < 0.0037 < 0.0038 0.0339 0.0355 0.0308 0.0304 0.0197 J 0.0229 J 0.037 < 0.0061 < 0.0062 < 0.0063 < 0.0065 < 0.006 < 0.0061 0.015 J < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.00023 < 0.00024 < 0.00024 < 0.00025 < 0.00023 < 0.00024 < 0.00024 0.00425 < 0.000415 0.0102 < 0.000415 0.019 J 0.00255 J < 0.000415 < 0.00027 < 0.00028 < 0.00028 < 0.00029 < 0.00027 < 0.00028 < 0.00028 < 0.00069 < 0.00069 0.00153 J < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00062 < 0.00062 < 0.00064 < 0.00065 < 0.00061 < 0.00062 0.00066 J < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00029 < 0.00029 < 0.0003 < 0.00031 < 0.00029 < 0.00029 < 0.0003 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.0013 < 0.0013 < 0.0014 < 0.0014 < 0.0013 < 0.0013 < 0.0013 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.0008 < 0.0008 < 0.00083 < 0.00084 < 0.00079 < 0.0008 < 0.00082 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00015 < 0.00015 < 0.00016 < 0.00016 < 0.00015 < 0.00015 0.00067 J < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00021 < 0.00021 < 0.00021 < 0.00022 < 0.0002 < 0.00021 0.00054 J < 0.0007 < 0.0007 0.00117 J < 0.0007 0.00163 J < 0.0007 < 0.0007 < 0.0005 < 0.0005 < 0.00051 < 0.00052 < 0.00049 < 0.0005 < 0.00051 < 0.00143 < 0.00143 0.0018 J < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00029 < 0.0003 < 0.00031 < 0.00031 < 0.00029 < 0.0003 0.00079 J 1.33 0.0474 37.8 0.0502 7.83 0.0925 < 0.0004 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 11 of 26 ends

4.5 ‐ 5 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.0035 ‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00537‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00417‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00318‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00315‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00472‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00494‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00537‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 12 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

B29‐25 B29‐26 B29‐26 B29‐27 B29‐27 B29‐28 B29‐28 B29‐29 B29‐29 B29‐30 B29‐30 B29‐31 B29‐31 B29‐32A B29‐25‐050 B29‐26‐050 B29‐26‐10 B29‐27‐010 B29‐27‐050 B29‐28‐010 B29‐28‐050 B29‐29‐010 B29‐29‐050 B29‐30‐010 B29‐30‐050 B29‐31‐010 B29‐31‐050 B29‐32A‐010 1/9/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/9/2020 1/9/2020 1/9/2020 1/9/2020 1/14/2020

0.0455 0.0235 J 0.029 0.0235 J 0.0267 0.0264 0.0227 J 0.0273 0.0303 0.0487 0.0481 0.0497 0.0391 0.0183 J < 0.0138 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.000404 < 0.0004 < 0.0004 < 0.0004 < 0.0004 0.0004 J < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.000419 0.00095 J 0.00333 J 0.00193 J < 0.000415 0.0155 < 0.000415 < 0.000415 < 0.000415 0.000916 J < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000697 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00235 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.000298 < 0.000295 < 0.000295 < 0.000295 0.000675 J < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.00671 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 0.0104 J < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00315 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00388 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.000707 < 0.0007 0.0309 0.0325 < 0.0007 1.26 0.00117 J 0.216 0.0115 < 0.0007 < 0.0007 < 0.0007 < 0.0007 0.0117 < 0.00144 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.000404 0.0186 0.737 0.275 0.00273 1.43 0.00228 0.0779 0.00313 0.0229 < 0.0004 0.0011 < 0.0004 < 0.0004 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 13 of 26 ends

4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 1.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 0.148 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318< 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 0.077 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 0.225 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 14 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

B29‐32A B29‐32B B29‐32B B29‐32C B29‐32C B29‐33A B29‐33A B29‐33B B29‐33B B29‐33C B29‐33C B29‐34A B29‐34A B29‐34B B29‐32A‐050 B29‐32B‐010 B29‐32B‐050 B29‐32C‐010 B29‐32C‐050 B29‐33A‐010 B29‐33A‐050 B29‐33B‐010 B29‐33B‐050 B29‐33C‐010 B29‐33C‐050 B29‐34A‐010 B29‐34A‐050 B29‐34B‐010 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/14/2020 1/8/2020 1/8/2020 1/9/2020 1/9/2020 1/9/2020 1/9/2020 1/8/2020 1/8/2020 1/8/2020

0.0193 J 0.016 J 0.0177 J < 0.0125 0.0158 J 0.0461 0.046 0.0366 0.0631 < 0.0125 0.0357 0.041 0.0438 0.0427 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 0.0675 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0004 < 0.0004 < 0.0004 0.000725 J < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 0.000441 J < 0.000415 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295

0.00953 J < 0.00664 < 0.00664 < 0.00664 0.00913 J < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 0.0113 J < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.0007 0.00818 < 0.0007 0.173 0.00268 < 0.0007 < 0.0007 < 0.0007 0.00153 J < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 0.00725 < 0.0004 0.323 0.000925 J < 0.0004 < 0.0004 < 0.0004 < 0.0004 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 15 of 26 ends

4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 0.5 ‐ 1 (ft) 4.5 ‐ 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 < 0.0035 ‐‐‐‐‐ < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 ‐‐‐‐‐ < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 < 0.00417 ‐‐‐‐‐ < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 < 0.00318 ‐‐‐‐‐< 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 < 0.00315 ‐‐‐‐‐ < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 < 0.00472 ‐‐‐‐‐ < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 < 0.00494 ‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 < 0.00537 ‐‐‐‐‐ ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 16 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

B29‐34B B29‐34C B29‐34C B29‐35A B29‐35A B29‐35B B29‐35B B29‐35C B29‐35C DGA‐003 DGA‐003 DGA‐003 DGA‐004 DGA‐004 B29‐34B‐050 B29‐34C‐010 B29‐34C‐050 B29‐35A‐010 B29‐35A‐050 B29‐35B‐010 B29‐35B‐050 B29‐35C‐010 B29‐35C‐050 DGA‐003‐1 DGA‐003‐10 DGA‐003‐5 DGA‐004‐1 DGA‐004‐10 1/8/2020 1/8/2020 1/8/2020 1/8/2020 1/8/2020 1/8/2020 1/8/2020 1/8/2020 1/8/2020 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022

0.0472 0.0485 0.0437 0.046 0.0466 0.0453 0.0457 0.0398 0.0535 < 0.0045 < 0.0044 < 0.0045 < 0.0045 < 0.0045 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0137 < 0.0097 < 0.0095 0.021 0.044 F1 < 0.0098 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.00025 < 0.00025 < 0.00026 < 0.00025 < 0.00026 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.000415 < 0.00058 < 0.00057 < 0.00059 < 0.00058 < 0.00059 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 < 0.00069 0.0274 < 0.00033 < 0.00033 < 0.00034 < 0.00033 < 0.00034 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00233 < 0.00028 < 0.00027 < 0.00028 < 0.00028 < 0.00028 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 < 0.000295 ‐‐‐‐‐ < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 < 0.00664 ‐‐‐‐‐ < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.00312 < 0.0051 < 0.0051 < 0.0052 < 0.0051 < 0.0052 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00384 < 0.00021 < 0.0002 < 0.00021 < 0.00021 < 0.00021 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.0007 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.00143 < 0.0003 < 0.00029 < 0.0003 < 0.0003 < 0.0003 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 < 0.0004 0.00553 < 0.00038 < 0.00038 < 0.00039 < 0.00038 < 0.00038 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 17 of 26 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Metals (mg/kg)
AntimonyArsenicBariumBerylliumCadmiumChromiumCobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliumVanadiumZinc PCBs (mg/kg)
Aroclor‐1016 (PCB‐1016)
Aroclor‐1221 (PCB‐1221)Aroclor‐1232 (PCB‐1232)Aroclor‐1242 (PCB‐1242)Aroclor‐1248 (PCB‐1248)Aroclor‐1254 (PCB‐1254)Aroclor‐1260 (PCB‐1260)Aroclor‐1262 (PCB‐1262)Aroclor‐1268 (PCB‐1268)Total PCBs PEST (mg/kg)
4,4'‐DDD
4,4'‐DDE
4,4'‐DDT
Aldrinalpha‐BHC
beta‐BHC
Chlordanedelta‐BHC
DieldrinEndosulfan I
Endosulfan II
Endosulfan sulfate
EndrinEndrin aldehydeEndrin ketonegamma‐BHC (Lindane)
HeptachlorHeptachlor epoxide
MethoxychlorToxaphene
DGA‐004 DGA‐007 DGA‐007 DGA‐007 DGA‐008 DGA‐008 DGA‐008 DGA‐009 DGA‐009 DGA‐009 DGA‐011 DGA‐011 DGA‐011 DGA‐013 DGA‐004‐5 DGA‐007‐1 DGA‐007‐5 DGA‐007‐9.5 DGA‐008‐1 DGA‐008‐5 DGA‐008‐9.5 DGA‐009‐1 DGA‐009‐10 DGA‐009‐5 DGA‐011‐10 DGA‐011‐3.5 DGA‐011‐5 DGA‐013‐1 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/9/2022 5 (ft) 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 10 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 1 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 18 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

DGA‐004 DGA‐007 DGA‐007 DGA‐007 DGA‐008 DGA‐008 DGA‐008 DGA‐009 DGA‐009 DGA‐009 DGA‐011 DGA‐011 DGA‐011 DGA‐013 DGA‐004‐5 DGA‐007‐1 DGA‐007‐5 DGA‐007‐9.5 DGA‐008‐1 DGA‐008‐5 DGA‐008‐9.5 DGA‐009‐1 DGA‐009‐10 DGA‐009‐5 DGA‐011‐10 DGA‐011‐3.5 DGA‐011‐5 DGA‐013‐1 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/8/2022 3/9/2022 5 (ft) 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 5 (ft) 9.5 (ft) 1 (ft) 10 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 1 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00059 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.00059 < 0.0006 < 0.0006 < 0.0006 < 0.00059 < 0.00026 < 0.00027 < 0.00026 < 0.00026 < 0.00026 < 0.00027 < 0.00027 < 0.00027 < 0.00027 < 0.00026 < 0.00027 < 0.00026 < 0.00027 < 0.00026 < 0.0044 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0044 < 0.0045 < 0.0045 < 0.0045 < 0.0045

0.054 < 0.0098 < 0.0098 < 0.0098 < 0.0098 0.024 0.02 < 0.0098 < 0.0098 0.042 < 0.0098 < 0.0098 < 0.0098 < 0.0097 < 0.00025 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00025 < 0.00026 < 0.00026 < 0.00026 < 0.00025 < 0.00058 < 0.00059 < 0.00058 < 0.00058 < 0.00058 < 0.00059 < 0.00059 < 0.00059 < 0.00059 < 0.00058 < 0.00059 < 0.00058 < 0.00059 < 0.00058

0.027 < 0.00034 < 0.00033 < 0.00033 < 0.00033 < 0.00034 < 0.00034 < 0.00034 < 0.00034 < 0.00033 < 0.00034 < 0.00033 < 0.00034 < 0.00033 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0051 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0051 < 0.0052 < 0.0052 < 0.0052 < 0.0051 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003

0.0029 < 0.00039 < 0.00038 < 0.00038 < 0.00038 0.0032 < 0.00039 < 0.00039 < 0.00039 < 0.00038 < 0.00038 < 0.00038 < 0.00038 < 0.00038 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 19 of 26 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Metals (mg/kg)
AntimonyArsenicBariumBerylliumCadmiumChromiumCobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliumVanadiumZinc PCBs (mg/kg)
Aroclor‐1016 (PCB‐1016)
Aroclor‐1221 (PCB‐1221)Aroclor‐1232 (PCB‐1232)Aroclor‐1242 (PCB‐1242)Aroclor‐1248 (PCB‐1248)Aroclor‐1254 (PCB‐1254)Aroclor‐1260 (PCB‐1260)Aroclor‐1262 (PCB‐1262)Aroclor‐1268 (PCB‐1268)Total PCBs PEST (mg/kg)
4,4'‐DDD
4,4'‐DDE
4,4'‐DDT
Aldrinalpha‐BHC
beta‐BHC
Chlordanedelta‐BHC
DieldrinEndosulfan I
Endosulfan II
Endosulfan sulfate
EndrinEndrin aldehydeEndrin ketonegamma‐BHC (Lindane)
HeptachlorHeptachlor epoxide
MethoxychlorToxaphene
DGA‐013 DGA‐013 DGA‐014 DGA‐014 DGA‐014 DGA‐015 DGA‐015 DGA‐015 DGA‐016 DGA‐016 DGA‐016 DGA‐017 DGA‐017 DGA‐017 DGA‐013‐10 DGA‐013‐5 DGA‐014‐10 DGA‐014‐3.5 DGA‐014‐5 DGA‐015‐1 DGA‐015‐10 DGA‐015‐5 DGA‐016‐1 DGA‐016‐10 DGA‐016‐5 DGA‐017‐1 DGA‐017‐10 DGA‐017‐5 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 10 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 20 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

DGA‐013 DGA‐013 DGA‐014 DGA‐014 DGA‐014 DGA‐015 DGA‐015 DGA‐015 DGA‐016 DGA‐016 DGA‐016 DGA‐017 DGA‐017 DGA‐017 DGA‐013‐10 DGA‐013‐5 DGA‐014‐10 DGA‐014‐3.5 DGA‐014‐5 DGA‐015‐1 DGA‐015‐10 DGA‐015‐5 DGA‐016‐1 DGA‐016‐10 DGA‐016‐5 DGA‐017‐1 DGA‐017‐10 DGA‐017‐5 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 10 (ft) 5 (ft) 10 (ft) 3.5 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00059 < 0.00059 < 0.0006 < 0.00058 < 0.0006 < 0.00059 < 0.00059 < 0.0006 < 0.00059 < 0.0006 < 0.00059 < 0.0006 < 0.00059 < 0.00059 < 0.00026 < 0.00026 < 0.00027 < 0.00026 < 0.00027 < 0.00026 < 0.00026 < 0.00027 < 0.00026 < 0.00027 < 0.00026 < 0.00027 < 0.00026 < 0.00026 < 0.0044 < 0.0044 < 0.0045 < 0.0044 < 0.0045 < 0.0045 < 0.0044 < 0.0045 < 0.0044 < 0.0045 < 0.0045 < 0.0045 < 0.0044 < 0.0045< 0.0097 < 0.0097 < 0.0098 < 0.0096 < 0.0098 < 0.0097 < 0.0096 < 0.0098 < 0.0096 < 0.0098 < 0.0097 0.022 < 0.0097 < 0.0097 < 0.00025 < 0.00025 < 0.00026 < 0.00025 < 0.00026 < 0.00025 < 0.00025 < 0.00026 < 0.00025 < 0.00026 < 0.00025 < 0.00026 < 0.00025 < 0.00025 < 0.00058 < 0.00058 < 0.00059 < 0.00057 < 0.00059 < 0.00058 < 0.00058 < 0.00059 < 0.00058 < 0.00059 < 0.00058 < 0.00059 < 0.00058 < 0.00058 < 0.00033 < 0.00033 < 0.00034 < 0.00033 < 0.00034 < 0.00033 < 0.00033 < 0.00034 < 0.00033 < 0.00034 < 0.00033 < 0.00034 < 0.00033 < 0.00033 < 0.00028 < 0.00028 < 0.00028 < 0.00027 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0051 < 0.0051 < 0.0052 < 0.0051 < 0.0052 < 0.0052 < 0.0051 < 0.0052 < 0.0051 < 0.0052 < 0.0052 < 0.0052 < 0.0051 < 0.0052 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.0003 < 0.0003 < 0.0003 < 0.00029 < 0.0003 < 0.0003 < 0.00029 < 0.0003 < 0.00029 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.00038 < 0.00038 < 0.00039 < 0.00038 < 0.00038 < 0.00038 < 0.00038 < 0.00039 < 0.00038 < 0.00039 < 0.00038 < 0.00039 < 0.00038 < 0.00038 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 21 of 26 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Metals (mg/kg)
AntimonyArsenicBariumBerylliumCadmiumChromiumCobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliumVanadiumZinc PCBs (mg/kg)
Aroclor‐1016 (PCB‐1016)
Aroclor‐1221 (PCB‐1221)Aroclor‐1232 (PCB‐1232)Aroclor‐1242 (PCB‐1242)Aroclor‐1248 (PCB‐1248)Aroclor‐1254 (PCB‐1254)Aroclor‐1260 (PCB‐1260)Aroclor‐1262 (PCB‐1262)Aroclor‐1268 (PCB‐1268)Total PCBs PEST (mg/kg)
4,4'‐DDD
4,4'‐DDE
4,4'‐DDT
Aldrinalpha‐BHC
beta‐BHC
Chlordanedelta‐BHC
DieldrinEndosulfan I
Endosulfan II
Endosulfan sulfate
EndrinEndrin aldehydeEndrin ketonegamma‐BHC (Lindane)
HeptachlorHeptachlor epoxide
MethoxychlorToxaphene
DGA‐019 DGA‐019 DGA‐019 DGA‐021 DGA‐021 DGA‐021 DGA‐022 DGA‐022 DGA‐022 DGA‐024 DGA‐024 DGA‐024 DGA‐025 DGA‐025 DGA‐019‐1 DGA‐019‐10 DGA‐019‐6.5 DGA‐021‐1 DGA‐021‐10 DGA‐021‐5 DGA‐022‐1 DGA‐022‐10 DGA‐022‐5 DGA‐024‐1 DGA‐024‐3 DGA‐024‐4.5 DGA‐025‐1.5 DGA‐025‐3 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/10/2022 3/10/2022 3/10/2022 3/10/2022 3/10/2022 1 (ft) 10 (ft) 6.5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 3 (ft) 4.5 (ft) 1.5 (ft) 3 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 22 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

DGA‐019 DGA‐019 DGA‐019 DGA‐021 DGA‐021 DGA‐021 DGA‐022 DGA‐022 DGA‐022 DGA‐024 DGA‐024 DGA‐024 DGA‐025 DGA‐025 DGA‐019‐1 DGA‐019‐10 DGA‐019‐6.5 DGA‐021‐1 DGA‐021‐10 DGA‐021‐5 DGA‐022‐1 DGA‐022‐10 DGA‐022‐5 DGA‐024‐1 DGA‐024‐3 DGA‐024‐4.5 DGA‐025‐1.5 DGA‐025‐3 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/9/2022 3/10/2022 3/10/2022 3/10/2022 3/10/2022 3/10/2022 1 (ft) 10 (ft) 6.5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 10 (ft) 5 (ft) 1 (ft) 3 (ft) 4.5 (ft) 1.5 (ft) 3 (ft) ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.00059 < 0.0006 < 0.0006 < 0.00059 < 0.00059 < 0.0006 < 0.0006 < 0.0006 < 0.0006 < 0.00059 < 0.00059 < 0.00059 < 0.00059 < 0.0006 < 0.00026 < 0.00027 < 0.00027 F1 < 0.00026 < 0.00026 < 0.00026 < 0.00027 < 0.00027 < 0.00027 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.0044 < 0.0045 < 0.0045 < 0.0044 < 0.0044 < 0.0045 < 0.0045 < 0.0045 < 0.0045 < 0.0044 < 0.0045 < 0.0044 < 0.0044 < 0.0045 < 0.0097 < 0.0098 < 0.0098 < 0.0097 < 0.0096 < 0.0098 < 0.0098 < 0.0098 < 0.0098 < 0.0096 < 0.0097 < 0.0097 0.022 < 0.0098 < 0.00025 < 0.00026 < 0.00026 < 0.00025 < 0.00025 < 0.00026 < 0.00026 < 0.00026 < 0.00026 < 0.00025 < 0.00025 < 0.00025 < 0.00025 < 0.00026 < 0.00058 < 0.00059 < 0.00059 < 0.00058 F2 < 0.00058 < 0.00058 < 0.00059 < 0.00059 < 0.00059 0.0013 < 0.00058 0.0016 0.0024 < 0.00058 < 0.00033 < 0.00034 < 0.00034 < 0.00033 F2 < 0.00033 < 0.00033 < 0.00034 < 0.00034 < 0.00034 < 0.00033 < 0.00033 < 0.00033 < 0.00033 < 0.00033 < 0.00028 < 0.00028 < 0.00028 F1 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 0.0051 < 0.0052 < 0.0052 < 0.0051 < 0.0051 < 0.0052 < 0.0052 < 0.0052 < 0.0052 < 0.0051 < 0.0051 < 0.0051 < 0.0051 < 0.0052 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 0.0011 < 0.00022 < 0.0003 < 0.0003 < 0.0003 < 0.0003 F2 < 0.00029 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.00029 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.00038 < 0.00038 < 0.00039 < 0.00038 < 0.00038 < 0.00038 < 0.00039 < 0.00039 < 0.00038 0.43 0.16 0.041 0.58 0.051 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 23 of 26 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Metals (mg/kg)
AntimonyArsenicBariumBerylliumCadmiumChromiumCobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliumVanadiumZinc PCBs (mg/kg)
Aroclor‐1016 (PCB‐1016)
Aroclor‐1221 (PCB‐1221)Aroclor‐1232 (PCB‐1232)Aroclor‐1242 (PCB‐1242)Aroclor‐1248 (PCB‐1248)Aroclor‐1254 (PCB‐1254)Aroclor‐1260 (PCB‐1260)Aroclor‐1262 (PCB‐1262)Aroclor‐1268 (PCB‐1268)Total PCBs PEST (mg/kg)
4,4'‐DDD
4,4'‐DDE
4,4'‐DDT
Aldrinalpha‐BHC
beta‐BHC
Chlordanedelta‐BHC
DieldrinEndosulfan I
Endosulfan II
Endosulfan sulfate
EndrinEndrin aldehydeEndrin ketonegamma‐BHC (Lindane)
HeptachlorHeptachlor epoxide
MethoxychlorToxaphene
DGA‐025 DGA‐026 DGA‐026 DGA‐026 NCW‐021B B15 PW‐07 PW‐11 PW‐12 PW‐15 UT‐22 UT‐22 UT‐23 DGA‐025‐5 DGA‐026‐3 DGA‐026‐4.5 DGA‐026‐6 NCW‐021‐B‐050 OMPPA‐B15‐5 PW07‐1.5 PW11‐1.5 PW12‐1.5 PW15‐1 SSS00320 (UT‐22‐01) SSS00321 (UT‐22‐05) SSS00322 (UT‐23‐01) 3/10/2022 3/10/2022 3/10/2022 3/10/2022 3/8/2022 9/13/2005 7/28/2020 7/28/2020 7/28/2020 7/28/2020 4/23/2013 4/23/2013 4/23/2013 5 (ft) 3 (ft) 4.5 (ft) 6 (ft) 5 (ft) 5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1 (ft) 5 (ft) 1 (ft) ‐‐‐‐ < 4.51 ‐ < 3.2 < 2.8 < 3.2 < 2.7 ‐‐‐
‐‐‐‐ < 1.13 ‐ 5.7 5 4.5 2.8 ‐‐‐
‐‐‐‐ 61.2 ‐ 51 31 54 54 ‐‐‐
‐‐‐‐ < 0.112 ‐ < 0.53 < 0.47 < 0.54 < 0.45 ‐‐‐
‐‐‐‐ < 0.11 ‐ 0.96 < 0.47 < 0.54 < 0.45 ‐‐‐
‐‐‐‐ 18.7 ‐ 13 8.5 14 15 ‐‐‐
‐‐‐‐ 7.88 ‐ 5.7 4.5 5.6 5.6 ‐‐‐
‐‐‐‐ 11.5 ‐ 41 14 12 5 ‐‐‐
‐‐‐‐ 2.23 ‐ 26 11 10 1.6 ‐‐‐
‐‐‐‐ < 0.0135 ‐ < 0.13 < 0.13 < 0.13 < 0.14 ‐‐‐
‐‐‐‐ < 0.627 ‐ < 1.1 < 0.94 < 1.1 < 0.91 ‐‐‐
‐‐‐‐ 9.18 ‐ 8.7 4.6 7 5 ‐‐‐
‐‐‐‐ < 1.08 ‐ < 3.2 < 2.8 < 3.2 < 2.7 ‐‐‐
‐‐‐‐ < 0.582 ‐ < 0.53 < 0.47 < 0.54 < 0.45 ‐‐‐
‐‐‐‐ < 5.95 ‐ < 3.2 < 2.8 < 3.2 < 2.7 ‐‐‐
‐‐‐‐ 61.9 ‐ 33 19 37 51 ‐‐‐
‐‐‐‐ 32.7 ‐ 51 19 45 34 ‐‐‐
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.014
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.013
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.011
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.012
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.014
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.012
‐‐‐‐‐‐ < 0.05 0.18 < 0.05 < 0.05 ‐‐ < 0.011
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐ < 0.012
‐‐‐‐‐‐ < 0.05 < 0.05 < 0.05 < 0.05 ‐‐‐
‐‐‐‐‐‐ < 0.05 0.18 < 0.05 < 0.05 ‐‐ < 0.014
‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐ HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 24 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

DGA‐025 DGA‐026 DGA‐026 DGA‐026 NCW‐021B B15 PW‐07 PW‐11 PW‐12 PW‐15 UT‐22 UT‐22 UT‐23 DGA‐025‐5 DGA‐026‐3 DGA‐026‐4.5 DGA‐026‐6 NCW‐021‐B‐050 OMPPA‐B15‐5 PW07‐1.5 PW11‐1.5 PW12‐1.5 PW15‐1 SSS00320 (UT‐22‐01) SSS00321 (UT‐22‐05) SSS00322 (UT‐23‐01) 3/10/2022 3/10/2022 3/10/2022 3/10/2022 3/8/2022 9/13/2005 7/28/2020 7/28/2020 7/28/2020 7/28/2020 4/23/2013 4/23/2013 4/23/2013 5 (ft) 3 (ft) 4.5 (ft) 6 (ft) 5 (ft) 5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1.5 ‐ 1.5 (ft) 1 (ft) 5 (ft) 1 (ft) ‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐ < 0.00023 < 0.00023 F2 < 0.00023 < 0.00023 < 0.00023 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00023 < 0.00023 < 0.00023 ‐‐‐‐‐‐‐‐‐‐ ‐ ‐ ‐
< 0.00059 < 0.00059 < 0.0006 < 0.00059 < 0.00059 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00059 < 0.00059 < 0.00059 < 0.00026 < 0.00026 < 0.00027 < 0.00026 < 0.00026 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00055 < 0.00055 < 0.00055 < 0.0044 < 0.0045 < 0.0045 < 0.0044 < 0.0044 < 0.05 < 0.11 < 0.14 < 0.085 ‐ < 0.0038 < 0.0038 < 0.0038 < 0.0096 < 0.0097 F2 < 0.0098 < 0.0096 < 0.0096 < 0.05 0.15 0.21 0.15 ‐ < 0.0062 < 0.0062 < 0.0062 < 0.00025 < 0.00025 < 0.00026 < 0.00025 < 0.00025 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00013 < 0.00013 < 0.00013

0.0011 < 0.00058 F2F1 < 0.00059 < 0.00058 < 0.00058 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00024 < 0.00024 < 0.00024 < 0.00033 < 0.00033 F2F1 < 0.00034 < 0.00033 < 0.00033 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00063 < 0.00063 < 0.00063 ‐‐‐‐‐ < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.0003 < 0.0003 < 0.0003 ‐‐‐‐‐ < 0.05 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.0013 < 0.0013 < 0.0013 < 0.0051 < 0.0051 < 0.0052 < 0.0051 < 0.0051 < 0.05 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00081 < 0.00081 < 0.00081 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00016 < 0.00016 < 0.00016 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.00022 < 0.005 < 0.0057 < 0.0071 0.0047 ‐ < 0.00021 < 0.00021 < 0.00021 < 0.00029 < 0.0003 F2F1 < 0.0003 < 0.00029 < 0.00029 < 0.005 < 0.0057 < 0.0071 < 0.0042 ‐ < 0.00051 < 0.00051 < 0.00051

0.033 0.0042 F2 0.0045 0.0034 < 0.00038 < 0.005 0.023 < 0.0071 < 0.0042 ‐ < 0.0003 < 0.0003 < 0.0003 HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐2
SUMMARY OF SOIL QUALITY DATA ‐ BUILDING 29 EXPOSURE AREA ROHR, INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 25 of 26 ends

CHULA VISTA, CALIFORNIA

Page 26 of 26 ends

BOLD = concentration detected at or above
reported detection limit.

Detected VOCs and SVOCs are shown.
< = analyte not detected above the indicated
reporting limit.

B = compound detected in the associated blank
J = estimated concentration.
‐ = not analyzed or not applicable.
mg/kg = milligrams per kilogram.
bgs = below ground surface.

UT‐23 UT‐24 UT‐24 UT‐25 UT‐25 UT‐25
SSS00323 (UT‐23‐05) SSS00324 (UT‐24‐01) SSS00325 (UT‐24‐05) SSS00326 (UT‐25‐01) SSS00327 (UT‐25‐05) SSS00420 (UT‐25‐01A) 4/23/2013 4/23/2013 4/23/2013 4/29/2013 4/29/2013 4/23/2013 5 (ft) 1 (ft) 5 (ft) 1 (ft) 5 (ft) 1 (ft)
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 < 0.00023 ‐‐‐‐‐‐
< 0.00059 < 0.00059 < 0.00059 < 0.00059 < 0.00059 < 0.00059 < 0.00055 < 0.00055 < 0.00055 < 0.00055 < 0.00055 < 0.00055 < 0.0038 < 0.0038 < 0.0038 < 0.0038 < 0.0038 < 0.0038
< 0.0062 < 0.0062 < 0.0062 < 0.0062 < 0.0062 < 0.0062
< 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00013 < 0.00024 < 0.00024 < 0.00024 < 0.00024 < 0.00024 < 0.00024 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00028 < 0.00063 < 0.00063 < 0.00063 < 0.00063 < 0.00063 < 0.00063 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003
< 0.0013 < 0.0013 < 0.0013 < 0.0013 < 0.0013 < 0.0013
< 0.00081 < 0.00081 < 0.00081 < 0.00081 < 0.00081 < 0.00081 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00016 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00021 < 0.00051 < 0.00051 < 0.00051 < 0.00051 < 0.00051 < 0.00051

0.059 < 0.0003 < 0.0003 < 0.0003 < 0.0003 < 0.0003
HALEY & ALDRICH, INC.
02_2022_07_HAI_T02_B29_ParcelA_SO_Vadose_REV1.xlsx
JULY 2022
TABLE A‐3
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 99/100 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 2 ends

Location B99‐V01 B99‐V02 B99‐V03 B99‐V04 B99‐V05 B99‐V06 B100‐V01 B100‐V02 B100‐V03 B100‐V03 Sample Name B99‐SV01‐1' B99‐SV02‐1' B99‐SV03‐1' B99‐SV04‐1' B99‐SV05‐1' B99‐SV06‐1' B100‐SV01‐1' B100‐SV02‐1' B100‐SV03‐1' Rep B100‐SV03‐1' Sample Date 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 Sample Depth 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) VOCs (µg/m3)
1,1,1,2‐Tetrachloroethane < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 1,1,1‐Trichloroethane < 28 < 28 < 28 < 28 < 28 < 28 < 28 < 28 < 28 < 28 1,1,2,2‐Tetrachloroethane < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 1,1,2‐Trichloroethane < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 1,1‐Dichloroethane < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 1,1‐Dichloroethene < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 1,1‐Difluoroethane < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 1,2,3‐Trichloropropane ‐‐‐‐‐‐‐‐‐‐
1,2,4‐Trichlorobenzene < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 1,2,4‐Trimethylbenzene < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 1,2‐Dibromoethane (Ethylene Dibromide) < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 1,2‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,2‐Dichloroethane < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 1,2‐Dichloropropane < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 1,2‐Dichlorotetrafluoroethane (CFC 114) < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 1,3,5‐Trimethylbenzene < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 1,3‐Butadiene ‐‐‐‐‐‐‐‐‐‐
1,3‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,4‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,4‐Dioxane ‐‐‐‐‐‐‐‐‐‐
2,2,4‐Trimethylpentane ‐‐‐‐‐‐‐‐‐‐
2‐Butanone (Methyl Ethyl Ketone) < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 2‐Hexanone < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 2‐Phenylbutane (sec‐Butylbenzene) ‐‐‐‐‐‐‐‐‐‐
4‐Ethyl toluene < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 Acetone ‐‐‐‐‐‐‐‐‐‐Allyl chloride ‐‐‐‐‐‐‐‐‐‐
Benzene < 16 < 16 < 16 < 16 < 16 < 16 < 16 < 16 < 16 < 16 Benzyl Chloride ‐‐‐‐‐‐‐‐‐‐
Bromodichloromethane < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 Bromoform < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 Bromomethane (Methyl Bromide) < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 Carbon disulfide < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 Carbon tetrachloride < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 Chlorobenzene < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 Chloroethane < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 Chloroform (Trichloromethane) < 25 < 25 < 25 < 25 < 25 < 25 < 25 < 25 < 25 < 25 Chloromethane (Methyl Chloride) < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 HALEY & ALDRICH, INC.
03_2022_07_HAI_T03_subslab_B99.xlsx JULY 2022
TABLE A‐3
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 99/100 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 2 ends

Location B99‐V01 B99‐V02 B99‐V03 B99‐V04 B99‐V05 B99‐V06 B100‐V01 B100‐V02 B100‐V03 B100‐V03 Sample Name B99‐SV01‐1' B99‐SV02‐1' B99‐SV03‐1' B99‐SV04‐1' B99‐SV05‐1' B99‐SV06‐1' B100‐SV01‐1' B100‐SV02‐1' B100‐SV03‐1' Rep B100‐SV03‐1' Sample Date 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 5/25/2018 Sample Depth 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) VOCs (µg/m3)
cis‐1,2‐Dichloroethene < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 cis‐1,3‐Dichloropropene < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 Cyclohexane ‐‐‐‐‐‐‐‐‐‐Cymene (p‐Isopropyltoluene) ‐‐‐‐‐‐‐‐‐‐ Dibromochloromethane < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 Dichlorodifluoromethane (CFC‐12) < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 Ethyl acetate ‐‐‐‐‐‐‐‐‐‐
Ethylbenzene < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 Hexachlorobutadiene < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110Hexane ‐‐‐‐‐‐‐‐‐‐Isobutane ‐‐‐‐‐‐‐‐‐‐Isopropyl Alcohol (2‐Propanol) ‐‐‐‐‐‐‐‐‐‐ Isopropylbenzene (Cumene) ‐‐‐‐‐‐‐‐‐‐
m,p‐Xylenes < 44 < 44 < 44 < 44 < 44 < 44 < 44 < 44 < 44 < 44 Methyl Tert Butyl Ether ‐‐‐‐‐‐‐‐‐‐
Methylene chloride < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 Naphthalene ‐‐‐‐‐‐‐‐‐‐N‐Heptane ‐‐‐‐‐‐‐‐‐‐
n‐Propylbenzene ‐‐‐‐‐‐‐‐‐‐
o‐Xylene < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 Propylene (Propene) ‐‐‐‐‐‐‐‐‐‐
Styrene 80 61 64 < 43 82 63 < 43 69 < 43 < 43
Tetrachloroethene < 34 < 34 < 34 < 34 < 34 < 34 < 34 < 34 < 34 < 34Tetrahydrofuran ‐‐‐‐‐‐‐‐‐‐Toluene < 38 < 38 < 38 < 38 < 38 < 38 < 38 < 38 < 38 < 38trans‐1,2‐Dichloroethene < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 trans‐1,3‐Dichloropropene < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 Trichloroethene < 27 < 27 < 27 < 27 32 < 27 30 < 27 < 27 < 27 Trichlorofluoromethane (CFC‐11) < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 Trifluorotrichloroethane (Freon 113) < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 Vinyl acetate ‐‐‐‐‐‐‐‐‐‐
Vinyl Bromide (Bromoethene) ‐‐‐‐‐‐‐‐‐‐
Vinyl chloride < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 NOTES AND ABBREVIATIONS:

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

BOLD = concentration detected at or above reported detection limit. < = analyte not detected above the indicated reporting limit. ‐ = not analyzed or not applicable.
µg/m3 = micrograms per cubic meter.

HALEY & ALDRICH, INC.
03_2022_07_HAI_T03_subslab_B99.xlsx JULY 2022
TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 1 of 10 ends

Location B29‐V04 B29‐V05 B29‐V06 B29‐V07 B29‐V08 B29‐V09 B29‐V10 B29‐V11 B29‐V12 B29‐V13 B29‐V14 Sample Name B29‐SV04‐1' B29‐V05‐1' B29‐SV06‐1' B29‐SV07‐1' B29‐SV08‐1' B29‐V09‐1' B29‐V10‐1' B29‐V11‐1' B29‐V12‐1' B29‐V13‐1' B29‐V14‐1' Sample Date 05/23/2018 05/22/2018 05/23/2018 05/23/2018 05/24/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 Sample Depth (bgs) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) Volatile Organic Compounds (µg/m3)
1,1,1,2‐Tetrachloroethane < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 1,1,1‐Trichloroethane < 28 46 < 28 < 28 < 28 110 < 28 < 28 < 28 < 28 46 1,1,2,2‐Tetrachloroethane < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 < 70 1,1,2‐Trichloroethane < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 < 55 1,1‐Dichloroethane < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 1,1‐Dichloroethene < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 1,1‐Dichloropropene ‐‐‐‐‐‐‐‐‐‐‐
1,1‐Difluoroethane < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 1,2,3‐Trichlorobenzene ‐‐‐‐‐‐‐‐‐‐‐
1,2,3‐Trichloropropane ‐‐‐‐‐‐‐‐‐‐‐
1,2,4‐Trichlorobenzene < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 < 75 1,2,4‐Trimethylbenzene < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 1,2‐Dibromo‐3‐chloropropane (DBCP) ‐‐‐‐‐‐‐‐‐‐‐1,2‐Dibromoethane (Ethylene Dibromide) < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 1,2‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,2‐Dichloroethane < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 1,2‐Dichloropropane < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 < 47 1,2‐Dichlorotetrafluoroethane (CFC 114) < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 < 71 1,3,5‐Trimethylbenzene < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 1,3‐Butadiene ‐‐‐‐‐‐‐‐‐‐‐
1,3‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,3‐Dichloropropane ‐‐‐‐‐‐‐‐‐‐‐
1,4‐Dichlorobenzene < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 < 61 1,4‐Dioxane ‐‐‐‐‐‐‐‐‐‐‐
2,2,4‐Trimethylpentane ‐‐‐‐‐‐‐‐‐‐‐
2,2‐Dichloropropane ‐‐‐‐‐‐‐‐‐‐‐
2‐Butanone (Methyl Ethyl Ketone) < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 < 60 2‐Chlorotoluene ‐‐‐‐‐‐‐‐‐‐‐
2‐Hexanone (Methyl Butyl Ketone) < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 2‐Phenylbutane (sec‐Butylbenzene) ‐‐‐‐‐‐‐‐‐‐‐
4‐Chlorotoluene ‐‐‐‐‐‐‐‐‐‐‐
4‐Ethyltoluene (1‐Ethyl‐4‐Methylbenzene) < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone) < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 < 41 Acetone ‐‐‐‐‐‐‐‐‐‐‐Allyl chloride ‐‐‐‐‐‐‐‐‐‐‐
Benzene < 16 27 < 16 < 16 < 16 < 16 < 16 < 16 < 16 < 16 < 16 Benzyl Chloride (alpha‐Chlorotoluene) ‐‐‐‐‐‐‐‐‐‐‐
Bromobenzene ‐‐‐‐‐‐‐‐‐‐‐Bromodichloromethane < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 < 68 Bromoform < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 Bromomethane (Methyl Bromide) < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 < 39 Carbon disulfide < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 < 32 Carbon tetrachloride < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 Chlorobenzene < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 < 23 Chlorobromomethane ‐‐‐‐‐‐‐‐‐‐‐Chloroethane < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 < 27 HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 2 of 10 ends

Location B29‐V04 B29‐V05 B29‐V06 B29‐V07 B29‐V08 B29‐V09 B29‐V10 B29‐V11 B29‐V12 B29‐V13 B29‐V14 Sample Name B29‐SV04‐1' B29‐V05‐1' B29‐SV06‐1' B29‐SV07‐1' B29‐SV08‐1' B29‐V09‐1' B29‐V10‐1' B29‐V11‐1' B29‐V12‐1' B29‐V13‐1' B29‐V14‐1' Sample Date 05/23/2018 05/22/2018 05/23/2018 05/23/2018 05/24/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 Sample Depth (bgs) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) Volatile Organic Compounds (µg/m3)
Chloroform (Trichloromethane) < 25 < 25 < 25 240 < 25 170 < 25 < 25 < 25 < 25 < 25 Chloromethane (Methyl Chloride) < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 < 21 cis‐1,2‐Dichloroethene < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 cis‐1,3‐Dichloropropene < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 Cyclohexane ‐‐‐‐‐‐‐‐‐‐‐Cymene (p‐Isopropyltoluene) ‐‐‐‐‐‐‐‐‐‐‐ Dibromochloromethane < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 < 86 Dibromomethane ‐‐‐‐‐‐‐‐‐‐‐Dichlorodifluoromethane (CFC‐12) < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 < 50 Ethyl acetate ‐‐‐‐‐‐‐‐‐‐‐
Ethylbenzene < 22 47 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 < 22 Hexachlorobutadiene < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110 < 110Hexane ‐‐‐‐‐‐‐‐‐‐‐Isobutane ‐‐‐‐‐‐‐‐‐‐‐Isopropyl Alcohol (2‐Propanol) ‐‐‐‐‐‐‐‐‐‐‐ Isopropylbenzene (Cumene) ‐‐‐‐‐‐‐‐‐‐‐
m,p‐Xylenes < 44 190 < 44 88 < 44 < 44 < 44 < 44 < 44 < 44 < 44 Methyl Tert Butyl Ether (MTBE) ‐‐‐‐‐‐‐‐‐‐‐
Methylene chloride (Dichloromethane) < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 < 35 Naphthalene ‐‐‐‐‐‐‐‐‐‐‐n‐Butylbenzene ‐‐‐‐‐‐‐‐‐‐‐
N‐Heptane ‐‐‐‐‐‐‐‐‐‐‐
n‐Propylbenzene ‐‐‐‐‐‐‐‐‐‐‐
o‐Xylene < 22 53 < 22 31 < 22 < 22 < 22 < 22 < 22 < 22 < 22 Propylene (Propene) ‐‐‐‐‐‐‐‐‐‐‐Styrene < 43 < 43 110 < 43 52 52 92 66 53 74 65 tert‐Butylbenzene ‐‐‐‐‐‐‐‐‐‐‐
Tetrachloroethene 210 220 < 34 2200 80 < 34 < 34 < 34 < 34 < 34 < 34 Tetrahydrofuran ‐‐‐‐‐‐‐‐‐‐‐Toluene < 38 180 44 46 < 38 < 38 < 38 < 38 < 38 < 38 < 38 trans‐1,2‐Dichloroethene < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 < 40 trans‐1,3‐Dichloropropene < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 < 46 Trichloroethene 7500 < 27 < 27 7800 130 11000 120 < 27 < 27 < 27 < 27 Trichlorofluoromethane (CFC‐11) < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 < 56 Trifluorotrichloroethane (Freon 113) < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 < 77 Vinyl acetate ‐‐‐‐‐‐‐‐‐‐‐
Vinyl Bromide (Bromoethene) ‐‐‐‐‐‐‐‐‐‐‐
Vinyl chloride < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 < 13 Notes:

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 3 of 10 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (µg/m3)
1,1,1,2‐Tetrachloroethane
1,1,1‐Trichloroethane
1,1,2,2‐Tetrachloroethane1,1,2‐Trichloroethane
1,1‐Dichloroethane1,1‐Dichloroethene1,1‐Dichloropropene1,1‐Difluoroethane1,2,3‐Trichlorobenzene 1,2,3‐Trichloropropane1,2,4‐Trichlorobenzene
1,2,4‐Trimethylbenzene1,2‐Dibromo‐3‐chloropropane (DBCP) 1,2‐Dibromoethane (Ethylene Dibromide)
1,2‐Dichlorobenzene
1,2‐Dichloroethane
1,2‐Dichloropropane
1,2‐Dichlorotetrafluoroethane (CFC 114)
1,3,5‐Trimethylbenzene1,3‐Butadiene
1,3‐Dichlorobenzene
1,3‐Dichloropropane
1,4‐Dichlorobenzene
1,4‐Dioxane2,2,4‐Trimethylpentane
2,2‐Dichloropropane
2‐Butanone (Methyl Ethyl Ketone)
2‐Chlorotoluene
2‐Hexanone (Methyl Butyl Ketone)
2‐Phenylbutane (sec‐Butylbenzene)
4‐Chlorotoluene
4‐Ethyltoluene (1‐Ethyl‐4‐Methylbenzene)
4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone)AcetoneAllyl chloride BenzeneBenzyl Chloride (alpha‐Chlorotoluene)
BromobenzeneBromodichloromethaneBromoformBromomethane (Methyl Bromide) Carbon disulfide
Carbon tetrachloride
ChlorobenzeneChlorobromomethaneChloroethane
B29‐V15 B29‐V16 B29‐V17 B29‐V18 B29‐V18 B29‐V19 DGA‐003 DGA‐004 DGA‐007 DGA‐008 DGA‐009 B29‐V15‐1' B29‐V16‐1' B29‐V17‐1' B29‐V18‐1' B29‐V18‐1' Rep B29‐V19‐1' DGA‐003‐2‐SG DGA‐004‐1‐SG DGA‐007‐2‐SG DGA‐008‐2‐SG DGA‐009‐2‐SG 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 03/08/2022 03/08/2022 03/10/2022 03/08/2022 03/09/2022 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 2 (ft) 1 (ft) 2 (ft) 2 (ft) 2 (ft) < 70 < 70 < 70 < 70 < 70 < 70 < 100 < 100 < 100 < 100 < 100 < 28 790 < 28 < 28 < 28 480 < 100 2000 3300 < 100 < 100 < 70 < 70 < 70 < 70 < 70 < 70 < 100 < 100 < 100 < 100 < 100 < 55 < 55 < 55 < 55 < 55 < 55 < 100 < 100 < 100 < 100 < 100 < 41 < 41 < 41 < 41 < 41 53 < 100 430 < 100 < 100 120
< 20 < 20 < 20 < 20 < 20 < 20 < 100 < 100 150 < 100 < 100 ‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 27 < 27 < 27 < 27 < 27 < 27 < 100 < 100 < 100 110 < 100 ‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 75 < 75 < 75 < 75 < 75 < 75 < 100 < 100 < 100 < 100 < 100 < 50 < 50 < 50 < 50 < 50 < 50 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐ < 1000 < 1000 < 1000 < 1000 < 1000
< 39 < 39 < 39 < 39 < 39 < 39 < 100 < 100 < 100 < 100 < 100 < 61 < 61 < 61 < 61 < 61 < 61 < 100 < 100 < 100 < 100 < 100 < 21 < 21 < 21 < 21 < 21 < 21 < 20 < 20 < 20 < 20 < 20
< 47 < 47 < 47 < 47 < 47 < 47 < 100 < 100 < 100 < 100 < 100 < 71 < 71 < 71 < 71 < 71 < 71 ‐‐‐‐‐
< 50 < 50 < 50 < 50 < 50 < 50 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 61 < 61 < 61 < 61 < 61 < 61 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 61 < 61 < 61 < 61 < 61 < 61 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100 < 60 < 60 < 60 < 60 < 60 < 60 ‐‐‐‐‐
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 41 < 41 < 41 < 41 < 41 < 41 ‐‐‐‐‐
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 50 < 50 < 50 < 50 < 50 < 50 ‐‐‐‐‐
< 41 < 41 < 41 < 41 < 41 < 41 ‐‐‐‐‐
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 16 < 16 < 16 < 16 < 16 < 16 20 24 36 < 20 34
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 68 < 68 < 68 < 68 < 68 < 68 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 39 < 39 < 39 < 39 < 39 < 39 < 100 < 100 < 100 < 100 < 100 < 32 < 32 < 32 < 32 < 32 < 32 ‐‐‐‐‐
< 13 < 13 < 13 < 13 < 13 < 13 < 20 < 20 < 20 < 20 < 20
< 23 < 23 < 23 < 23 < 23 < 23 < 20 < 20 < 20 < 20 < 20
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 27 < 27 < 27 < 27 < 27 < 27 < 100 < 100 < 100 < 100 < 100 HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 4 of 10 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (µg/m3)
Chloroform (Trichloromethane)Chloromethane (Methyl Chloride) cis‐1,2‐Dichloroethene
cis‐1,3‐Dichloropropene
CyclohexaneCymene (p‐Isopropyltoluene)
DibromochloromethaneDibromomethaneDichlorodifluoromethane (CFC‐12) Ethyl acetateEthylbenzeneHexachlorobutadieneHexaneIsobutaneIsopropyl Alcohol (2‐Propanol) Isopropylbenzene (Cumene)
m,p‐Xylenes
Methyl Tert Butyl Ether (MTBE)
Methylene chloride (Dichloromethane)
Naphthalenen‐Butylbenzene
N‐Heptane
n‐Propylbenzene
o‐Xylene
Propylene (Propene)Styrenetert‐Butylbenzene
TetrachloroetheneTetrahydrofuranToluenetrans‐1,2‐Dichloroethene trans‐1,3‐Dichloropropene
TrichloroetheneTrichlorofluoromethane (CFC‐11)
Trifluorotrichloroethane (Freon 113)
Vinyl acetateVinyl Bromide (Bromoethene)
Vinyl chlorideNotes:

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

B29‐V15 B29‐V16 B29‐V17 B29‐V18 B29‐V18 B29‐V19 DGA‐003 DGA‐004 DGA‐007 DGA‐008 DGA‐009 B29‐V15‐1' B29‐V16‐1' B29‐V17‐1' B29‐V18‐1' B29‐V18‐1' Rep B29‐V19‐1' DGA‐003‐2‐SG DGA‐004‐1‐SG DGA‐007‐2‐SG DGA‐008‐2‐SG DGA‐009‐2‐SG 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 05/22/2018 03/08/2022 03/08/2022 03/10/2022 03/08/2022 03/09/2022 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 1 (ft) 2 (ft) 1 (ft) 2 (ft) 2 (ft) 2 (ft) < 25 < 25 < 25 < 25 < 25 < 25 < 20 80 120 < 20 < 20
< 21 < 21 < 21 < 21 < 21 < 21 < 100 < 100 < 100 < 100 < 100 < 40 < 40 < 40 < 40 < 40 1300 < 100 5800 < 100 < 100 17000 < 46 < 46 < 46 < 46 < 46 < 46 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 86 < 86 < 86 < 86 < 86 < 86 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 50 < 50 < 50 < 50 < 50 < 50 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 22 < 22 < 22 < 22 < 22 < 22 < 100 < 100 < 100 < 100 < 100 < 110 < 110 < 110 < 110 < 110 < 110 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100 < 44 < 44 < 44 < 44 < 44 < 44 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 35 < 35 < 35 < 35 < 35 < 35 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐ < 20 < 20 < 20 < 20 < 20
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 22 < 22 < 22 < 22 < 22 < 22 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
64 < 43 110 48 62 99 < 100 < 100 < 100 < 100 < 100
‐‐‐‐‐‐ < 100 < 100 < 100 < 100 < 100
< 34 340 < 34 57 54 < 34 < 20 100 20 < 20 66
‐‐‐‐‐‐‐‐‐‐‐
< 38 < 38 < 38 < 38 < 38 < 38 < 200 < 200 < 200 < 200 < 200 < 40 < 40 < 40 < 40 < 40 150 < 100 340 < 100 < 100 470
< 46 < 46 < 46 < 46 < 46 < 46 < 100 < 100 < 100 < 100 < 100 < 27 16000 43 42 < 27 9800 260 18000 5600 1300 2300
60 < 56 < 56 < 56 < 56 < 56 < 100 < 100 < 100 < 100 < 100 < 77 320 < 77 < 77 < 77 1900 160 1600 2600 < 100 < 100
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 13 < 13 < 13 < 13 < 13 < 13 < 10 < 10 < 10 < 10 36
HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 5 of 10 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (µg/m3)
1,1,1,2‐Tetrachloroethane
1,1,1‐Trichloroethane
1,1,2,2‐Tetrachloroethane1,1,2‐Trichloroethane
1,1‐Dichloroethane1,1‐Dichloroethene1,1‐Dichloropropene1,1‐Difluoroethane1,2,3‐Trichlorobenzene 1,2,3‐Trichloropropane1,2,4‐Trichlorobenzene
1,2,4‐Trimethylbenzene1,2‐Dibromo‐3‐chloropropane (DBCP) 1,2‐Dibromoethane (Ethylene Dibromide)
1,2‐Dichlorobenzene
1,2‐Dichloroethane
1,2‐Dichloropropane
1,2‐Dichlorotetrafluoroethane (CFC 114)
1,3,5‐Trimethylbenzene1,3‐Butadiene
1,3‐Dichlorobenzene
1,3‐Dichloropropane
1,4‐Dichlorobenzene
1,4‐Dioxane2,2,4‐Trimethylpentane
2,2‐Dichloropropane
2‐Butanone (Methyl Ethyl Ketone)
2‐Chlorotoluene
2‐Hexanone (Methyl Butyl Ketone)
2‐Phenylbutane (sec‐Butylbenzene)
4‐Chlorotoluene
4‐Ethyltoluene (1‐Ethyl‐4‐Methylbenzene)
4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone)AcetoneAllyl chloride BenzeneBenzyl Chloride (alpha‐Chlorotoluene)
BromobenzeneBromodichloromethaneBromoformBromomethane (Methyl Bromide) Carbon disulfide
Carbon tetrachloride
ChlorobenzeneChlorobromomethaneChloroethane
DGA‐009 DGA‐011 DGA‐013 DGA‐014 DGA‐015 DGA‐016 DGA‐017 DGA‐017 DGA‐019 DGA‐021 DGA‐022 DGA‐009‐2‐SG REP DGA‐011‐2‐SG DGA‐013‐1‐SG DGA‐014‐2.5‐SG DGA‐015‐2‐SG DGA‐016‐2‐SG DGA‐017‐1‐SG DGA‐017‐1‐SG REP DGA‐019‐2‐SG DGA‐021‐1‐SG DGA‐022‐2‐SG 03/09/2022 03/09/2022 03/08/2022 03/09/2022 03/09/2022 03/10/2022 03/08/2022 03/08/2022 03/10/2022 03/08/2022 03/10/2022 2 (ft) 2 (ft) 1 (ft) 2.5 (ft) 2 (ft) 2 (ft) 1 (ft) 1 (ft) 2 (ft) 1 (ft) 2 (ft) < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 150 140 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 1000 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
28 < 20 < 20 < 20 < 20 56 < 20 < 20 26 < 20 30
‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20
< 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 6 of 10 ends

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

DGA‐009 DGA‐011 DGA‐013 DGA‐014 DGA‐015 DGA‐016 DGA‐017 DGA‐017 DGA‐019 DGA‐021 DGA‐022 DGA‐009‐2‐SG REP DGA‐011‐2‐SG DGA‐013‐1‐SG DGA‐014‐2.5‐SG DGA‐015‐2‐SG DGA‐016‐2‐SG DGA‐017‐1‐SG DGA‐017‐1‐SG REP DGA‐019‐2‐SG DGA‐021‐1‐SG DGA‐022‐2‐SG 03/09/2022 03/09/2022 03/08/2022 03/09/2022 03/09/2022 03/10/2022 03/08/2022 03/08/2022 03/10/2022 03/08/2022 03/10/2022 2 (ft) 2 (ft) 1 (ft) 2.5 (ft) 2 (ft) 2 (ft) 1 (ft) 1 (ft) 2 (ft) 1 (ft) 2 (ft) < 20 < 20 < 20 < 20 < 20 61 140 120 30 < 20 190
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 14000 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20 < 20
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 56 35 180 260 < 20 < 20 < 20 < 20 < 20 560 98
‐‐‐‐‐‐‐‐‐‐‐
< 200 < 200 < 200 < 200 < 200 200 < 200 < 200 < 200 < 200 < 200 390 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 1900 860 54 < 20 < 20 4900 2700 2700 2600 770 860
< 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 < 100 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
30 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10
HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 7 of 10 ends

LocationSample Name
Sample Date
Sample Depth (bgs)
Volatile Organic Compounds (µg/m3)
1,1,1,2‐Tetrachloroethane
1,1,1‐Trichloroethane
1,1,2,2‐Tetrachloroethane1,1,2‐Trichloroethane
1,1‐Dichloroethane1,1‐Dichloroethene1,1‐Dichloropropene1,1‐Difluoroethane1,2,3‐Trichlorobenzene 1,2,3‐Trichloropropane1,2,4‐Trichlorobenzene
1,2,4‐Trimethylbenzene1,2‐Dibromo‐3‐chloropropane (DBCP) 1,2‐Dibromoethane (Ethylene Dibromide)
1,2‐Dichlorobenzene
1,2‐Dichloroethane
1,2‐Dichloropropane
1,2‐Dichlorotetrafluoroethane (CFC 114)
1,3,5‐Trimethylbenzene1,3‐Butadiene
1,3‐Dichlorobenzene
1,3‐Dichloropropane
1,4‐Dichlorobenzene
1,4‐Dioxane2,2,4‐Trimethylpentane
2,2‐Dichloropropane
2‐Butanone (Methyl Ethyl Ketone)
2‐Chlorotoluene
2‐Hexanone (Methyl Butyl Ketone)
2‐Phenylbutane (sec‐Butylbenzene)
4‐Chlorotoluene
4‐Ethyltoluene (1‐Ethyl‐4‐Methylbenzene)
4‐Methyl‐2‐Pentanone (Methyl Isobutyl Ketone)AcetoneAllyl chloride BenzeneBenzyl Chloride (alpha‐Chlorotoluene)
BromobenzeneBromodichloromethaneBromoformBromomethane (Methyl Bromide) Carbon disulfide
Carbon tetrachloride
ChlorobenzeneChlorobromomethaneChloroethane
PW‐01B PW‐06 PW‐07 PW‐08 PW‐09 PW‐11 PW‐12 PW‐13 PW‐14 PW‐14 PW‐15 PW01B‐SV‐5 PW06‐SV‐3.5 PW07‐SV‐4 PW08‐SV‐5 PW09‐SV‐4.5 PW11‐SV‐3 PW12‐SV‐3 PW13‐SV‐4 PW14‐SV‐4 PW14‐SV‐4DUP PW15‐SV‐4.5 07/31/2020 07/31/2020 07/31/2020 07/31/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 5 ‐ 5 (ft) 3.5 ‐ 3.5 (ft) 4 ‐ 4 (ft) 5 ‐ 5 (ft) 4.5 ‐ 4.5 (ft) 3 ‐ 3 (ft) 3 ‐ 3 (ft) 4 ‐ 4 (ft) 4 ‐ 4 (ft) 4 ‐ 4 (ft) 4.5 ‐ 4.5 (ft) ‐‐‐‐‐‐‐‐‐‐‐
< 24 < 600 38 < 24 120 < 3< 3 12 < 1200 < 2400 1100
< 28 < 700 < 28 < 28 < 140 < 3.5 < 3.5 < 3.5 < 1400 < 2800 < 350 < 24 < 600 < 24 < 24 < 120 < 3< 3< 3< 1200 < 2400 < 300 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
< 24 < 600 < 24 < 24 < 120 < 3< 3< 3< 1200 < 2400 < 300 < 32 < 800 < 32 < 32 < 160 < 4< 4< 4< 1600 < 3200 < 400 610 600 120 530 140 110 400 500 < 1000 < 2000 < 250
‐‐‐‐‐‐‐‐‐‐‐
< 32 < 800 < 32 < 32 < 160 < 4< 4< 4< 1600 < 3200 < 400 < 24 < 600 < 24 < 24 < 120 < 3< 3< 3< 1200 < 2400 < 300< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 28 < 700 < 28 < 28 < 140 < 3.5 < 3.5 < 3.5 < 1400 < 2800 < 350 220 < 500 48 270 < 100 67 180 180 < 1000 < 2000 < 250
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 24 < 600 < 24 < 24 < 120 < 3< 3< 3< 1200 < 2400 < 300 ‐‐‐‐‐‐‐‐‐‐‐
< 24 < 600 < 24 < 24 < 120 < 3< 3< 3< 1200 < 2400 < 300 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 12 3.9 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 80 < 2000 < 80 < 80 < 400 < 10 < 10 < 10 < 4000 < 8000 < 1000 ‐‐‐‐‐‐‐‐‐‐‐
< 80 < 2000 < 80 < 80 < 400 < 10 < 10 < 10 < 4000 < 8000 < 1000 < 24 < 600 < 24 < 24 < 120 < 3 8.1 < 3< 1200 < 2400 < 300 ‐‐‐‐‐‐‐‐‐‐‐
130 < 500 22 160 < 100 29 110 94 < 1000 < 2000 < 250
< 80 < 2000 < 80 < 80 < 400 < 10 < 10 < 10 < 4000 < 8000 < 1000 < 80 < 2000 < 80 < 80 < 400 51 59 43 < 4000 < 8000 < 1000 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 75 < 100 10 36 8 < 1000 < 2000 < 250
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 9.8 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 24 < 600 < 24 < 24 140 16 17 < 3< 1200 < 2400 < 300
< 40 < 1000 < 40 < 40 < 200 < 5< 5< 5< 2000 < 4000 < 500 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 28 < 700 < 28 < 28 < 140 < 3.5 < 3.5 < 3.5 < 1400 < 2800 < 350 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 8 of 10 ends

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

PW‐01B PW‐06 PW‐07 PW‐08 PW‐09 PW‐11 PW‐12 PW‐13 PW‐14 PW‐14 PW‐15 PW01B‐SV‐5 PW06‐SV‐3.5 PW07‐SV‐4 PW08‐SV‐5 PW09‐SV‐4.5 PW11‐SV‐3 PW12‐SV‐3 PW13‐SV‐4 PW14‐SV‐4 PW14‐SV‐4DUP PW15‐SV‐4.5 07/31/2020 07/31/2020 07/31/2020 07/31/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 07/30/2020 5 ‐ 5 (ft) 3.5 ‐ 3.5 (ft) 4 ‐ 4 (ft) 5 ‐ 5 (ft) 4.5 ‐ 4.5 (ft) 3 ‐ 3 (ft) 3 ‐ 3 (ft) 4 ‐ 4 (ft) 4 ‐ 4 (ft) 4 ‐ 4 (ft) 4.5 ‐ 4.5 (ft) < 20 1600 160 32 410 14 20 26 < 1000 < 2000 < 250
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 3.8 4300 4400 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 3.6 < 2.5 < 1000 < 2000 < 250 79 < 600 < 24 80 < 120 8.8 63 53 < 1200 < 2400 < 300
< 20 < 500 < 20 < 20 < 100 12 9.5 < 2.5 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 17 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 150 < 500 28 340 < 100 50 150 81 < 1000 < 2000 < 250
< 48 < 1200 < 48 < 48 < 240 < 6< 6< 6< 2400 < 4800 < 600 < 20 < 500 < 20 < 20 < 100 5.9 11 3.6 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 5.1 < 2.5 < 2.5 < 1000 < 2000 < 250 < 80 < 2000 < 80 < 80 < 400 < 10 < 10 < 10 < 4000 < 8000 < 1000 < 20 < 500 < 20 33 < 100 5.9 20 11 < 1000 < 2000 < 250
670 1100 130 1300 200 160 710 400 < 2000 < 4000 < 500
< 80 < 2000 < 80 < 80 < 400 < 10 < 10 < 10 < 4000 < 8000 < 1000 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 20 < 500 < 20 < 20 < 100 4.9 12 4.2 < 1000 < 2000 < 250 80 < 500 < 20 120 < 100 19 87 59 < 1000 < 2000 < 250
240 < 500 40 360 < 100 70 200 140 < 1000 < 2000 < 250
< 20 < 500 < 20 < 20 < 100 7.5 30 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 14 19 < 2.5 < 1000 < 2000 < 250 ‐‐‐‐‐‐‐‐‐‐‐
< 28 < 700 330 96 < 140 16 1500 4.7 < 1400 < 2800 < 350 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 230 510 51 670 150 89 350 98 < 1000 < 2000 < 250
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 140 160000 7600 54 14000 5.9 35 91 64000 64000 13000
< 24 < 600 < 24 < 24 < 120 < 3< 3 94 < 1200 < 2400 < 300 < 32 < 800 < 32 < 32 < 160 5.6 < 4< 4< 1600 < 3200 740
< 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 < 20 < 500 < 20 < 20 < 100 < 2.5 < 2.5 < 2.5 < 1000 < 2000 < 250 HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 9 of 10 ends

4.5 ‐
55 < 10< 10
< 2.5

7.6 < 2.5
‐
< 3
< 5
< 2.5
< 2.5
< 3.5< 2.5
‐
< 2.5
HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022 TABLE A‐4
SUMMARY OF SOIL VAPOR QUALITY DATA, BUILDING 29 EXPOSURE AREA ROHR INC. ‐ PARCEL A

CHULA VISTA, CALIFORNIA

Page 10 of 10 ends

Volatile Organic Compounds (VOCs) analyzed by EPA Method TO‐15.

PW‐16
PW16‐SV‐5
07/30/2020
5 ‐ 5 (ft)

5.8 < 2.5< 2.5< 2.5< 2.5
27 < 2.5
‐
< 2.5< 2.5
61 < 6
< 2.5< 2.5
< 10

7.7 310
< 10
< 2.5

6.3 ‐
< 2.5
3699
< 2.5
10 ‐
16 < 2.5
120
< 2.5< 2.5
25 6.7
72 < 2.5< 2.5< 2.5
HALEY & ALDRICH, INC.04_2022_07_HAI_T04_sublsab_B29.xlsx JULY 2022

APPENDIX B
ProUCL 95% UCL Input and Output Sheets
Building 29 Exposure Area
Landscaper/Utility Worker
sys_loc_code sys_sample_code sample_date start_depth report_result_unit Arsenic D_Arsenic Beryllium D_Beryllium Total PCBs D_Total PCBs Trichloroethene D_Trichloroethene B11 B11‐2.5 7/26/2005 2.5 mg/kg 0.005 0B12 B12‐2.5 7/26/2005 2.5 mg/kg 0.005 0B15 OMPPA‐B15‐5 9/13/2005 5 mg/kg 0.005 0 B29‐01 B29‐01‐1 6/27/2016 0.5 mg/kg 4.23 1 0.329 1 0.043 0 0.00031 0 B29‐01 B29‐01‐2 6/27/2016 1.5 mg/kg 1.89 1 0.359 1 0.043 0 0.0003 0 B29‐02 B29‐02‐1 6/27/2016 0.5 mg/kg 23.3 1 0.415 1 0.042 0 0.0003 0 B29‐02 B29‐02‐2 6/27/2016 1.5 mg/kg 1.37 1 0.343 1 0.043 0 0.00031 0 B29‐02A B29‐02A‐010 1/9/2020 0.5 mg/kg 0.46 0
B29‐02A B29‐02A‐030 1/9/2020 2.5 mg/kg 3.04 1
B29‐02B B29‐02B‐010 1/9/2020 0.5 mg/kg 0.46 0
B29‐02B B29‐02B‐030 1/9/2020 2.5 mg/kg 0.46 0
B29‐02C B29‐02C‐010 1/9/2020 0.5 mg/kg 0.46 0
B29‐02C B29‐02C‐030 1/9/2020 2.5 mg/kg 0.46 0
B29‐03 B29‐03‐01 6/28/2016 0.5 mg/kg 19.6 1 0.434 1 0.043 0 0.00031 0 B29‐03 B29‐03‐03 6/28/2016 2.5 mg/kg 2.64 1 0.546 1 0.042 0 0.00064 1 B29‐03A B29‐03A‐010 1/10/2020 0.5 mg/kg 20.4 1
B29‐03A B29‐03A‐030 1/10/2020 2.5 mg/kg 1.44 1
B29‐03B B29‐03B‐010 1/10/2020 0.5 mg/kg 21.9 1
B29‐03B B29‐03B‐030 1/10/2020 2.5 mg/kg 1.1 1
B29‐04 B29‐04‐1 6/27/2016 0.5 mg/kg 2.7 1 0.269 1 0.042 0 0.0003 0 B29‐04 B29‐04‐5 6/27/2016 4.5 mg/kg 5.07 1 0.295 1 0.042 0 0.0003 0 B29‐05 B29‐05‐2 6/28/2016 1.5 mg/kg 4.59 1 0.168 1 1.3 1 0.015 1 B29‐05 B29‐05‐5 6/28/2016 4.5 mg/kg 2.85 1 0.335 1 0.043 0 0.014 1 B29‐05A B29‐05A‐020 1/10/2020 1.5 mg/kg 0.0997 1
B29‐05A B29‐05A‐030 1/10/2020 2.5 mg/kg 0.00566 1
B29‐05B B29‐05B‐020 1/10/2020 1.5 mg/kg 0.127 1
B29‐05B B29‐05B‐030 1/10/2020 2.5 mg/kg 0.00537 0
B29‐05C B29‐05C‐020 1/10/2020 1.5 mg/kg 0.0132 1
B29‐05C B29‐05C‐030 1/10/2020 2.5 mg/kg 0.0129 1
B29‐06 B29‐06‐1 6/29/2016 0.5 mg/kg 2.02 1 0.395 1 0.042 0 0.00031 0 B29‐06 B29‐06‐5 6/29/2016 4.5 mg/kg 4.86 1 0.257 1 0.042 0 0.00029 0 B29‐07 B29‐07‐1 6/29/2016 0.5 mg/kg 21.8 1 0.404 1 0.042 0 0.00031 0 B29‐07 B29‐07‐3 6/29/2016 2.5 mg/kg 2.86 1 0.401 1 0.042 0 0.00031 0 B29‐07A B29‐07A‐010 1/10/2020 0.5 mg/kg 24.6 1
B29‐07A B29‐07A‐030 1/10/2020 2.5 mg/kg 1.98 1
B29‐07B B29‐07B‐010 1/10/2020 0.5 mg/kg 22 1
B29‐07B B29‐07B‐030 1/10/2020 2.5 mg/kg 1.63 1
B29‐08 B29‐08‐1 6/28/2016 0.5 mg/kg 2.16 1 0.364 1 0.17 1 0.0003 0 B29‐08 B29‐08‐5 6/28/2016 4.5 mg/kg 4.56 1 0.407 1 0.036 1 0.00032 0 B29‐09 B29‐09‐1 6/29/2016 0.5 mg/kg 5.76 1 0.228 1 0.042 0 0.0003 0 B29‐09 B29‐09‐5 6/29/2016 4.5 mg/kg 1.27 1 0.227 1 0.042 0 0.0003 0 B29‐10 B29‐10‐1 6/28/2016 0.5 mg/kg 5.81 1 0.232 1 0.042 0 0.00031 0 B29‐10 B29‐10‐5 6/28/2016 4.5 mg/kg 2.25 1 0.494 1 0.042 0 0.0003 0 B29‐11 B29‐11‐1 6/28/2016 0.5 mg/kg 2.12 1 0.391 1 0.042 0 0.0003 0 B29‐11 B29‐11‐5 6/28/2016 4.5 mg/kg 4.59 1 0.183 1 0.042 0 0.00031 0 B29‐12 B29‐12‐1 6/28/2016 0.5 mg/kg 1.45 1 0.154 1 0.042 0 0.00031 0 B29‐12 B29‐12‐5 6/28/2016 4.5 mg/kg 1.75 1 0.526 1 0.042 0 0.0003 0 sys_loc_code sys_sample_code sample_date start_depth report_result_unit Arsenic D_Arsenic Beryllium D_Beryllium Total PCBs D_Total PCBs Trichloroethene D_Trichloroethene B29‐13 B29‐13‐4 6/28/2016 3.5 mg/kg 3.85 1 0.352 1 0.042 0 0.00031 0 B29‐13 B29‐13‐5 6/28/2016 4.5 mg/kg 3.16 1 0.399 1 0.042 0 0.00031 0 B29‐14 B29‐14‐1.5 6/29/2016 1 mg/kg 1.29 1 0.276 1 0.042 0 0.0042 1 B29‐14 B29‐14‐3 6/29/2016 2.5 mg/kg 2.31 1 0.564 1 0.042 0 0.002 1 B29‐15 B29‐15‐1 6/29/2016 0.5 mg/kg 5.18 1 0.136 0 0.042 0 0.0003 0 B29‐15 B29‐15‐3 6/29/2016 2.5 mg/kg 2.39 1 0.523 1 0.043 0 0.0018 1 B29‐16 B29‐16‐1 6/28/2016 0.5 mg/kg 2.73 1 0.253 1 0.042 0 0.00031 0 B29‐16 B29‐16‐3 6/28/2016 2.5 mg/kg 1.25 1 0.161 1 0.043 0 0.00029 0 B29‐17 B29‐17‐1 6/29/2016 0.5 mg/kg 2.96 1 0.242 1 0.042 0 0.0003 0 B29‐17 B29‐17‐3 6/29/2016 2.5 mg/kg 2.58 1 0.627 1 0.042 0 0.00031 0 B29‐18 B29‐18‐1.5 6/29/2016 1 mg/kg 1.5 1 0.273 1 0.042 0 0.00029 0 B29‐18 B29‐18‐3 6/29/2016 2.5 mg/kg 1.56 1 0.501 1 0.042 0 0.0003 0 B29‐19 B29‐19‐2 6/29/2016 1.5 mg/kg 2.09 1 0.6 1 0.042 0 0.00031 0 B29‐19 B29‐19‐5 6/29/2016 4.5 mg/kg 1.49 1 0.358 1 0.042 0 0.00031 0 B29‐20 B29‐20‐1 6/27/2016 0.5 mg/kg 1.41 1 0.211 1 0.042 0 0.00029 0 B29‐20 B29‐20‐2 6/27/2016 1.5 mg/kg 1.61 1 0.241 1 0.042 0 0.0003 0 B29‐21 B29‐21‐1 6/28/2016 0.5 mg/kg 7.59 1 0.152 1 0.043 0 0.00079 1 B29‐22 B29‐22‐010 1/10/2020 0.5 mg/kg 1.33 1
B29‐22 B29‐22‐050 1/10/2020 4.5 mg/kg 0.0474 1
B29‐23 B29‐23‐010 1/10/2020 0.5 mg/kg 37.8 1
B29‐23 B29‐23‐050 1/10/2020 4.5 mg/kg 0.0502 1
B29‐24 B29‐24‐010 1/14/2020 0.5 mg/kg 7.83 1
B29‐24 B29‐24‐050 1/14/2020 4.5 mg/kg 0.0925 1
B29‐25 B29‐25‐010 1/9/2020 0.5 mg/kg 0.0004 0
B29‐25 B29‐25‐050 1/9/2020 4.5 mg/kg 0.000404 0
B29‐26 B29‐26‐050 1/14/2020 4.5 mg/kg 0.0186 1
B29‐26 B29‐26‐10 1/14/2020 0.5 mg/kg 0.737 1
B29‐27 B29‐27‐010 1/14/2020 0.5 mg/kg 0.275 1
B29‐27 B29‐27‐050 1/14/2020 4.5 mg/kg 0.00273 1
B29‐28 B29‐28‐010 1/14/2020 0.5 mg/kg 1.43 1
B29‐28 B29‐28‐050 1/14/2020 4.5 mg/kg 0.00228 1
B29‐29 B29‐29‐010 1/14/2020 0.5 mg/kg 0.0779 1
B29‐29 B29‐29‐050 1/14/2020 4.5 mg/kg 0.00313 1
B29‐30 B29‐30‐010 1/9/2020 0.5 mg/kg 0.0229 1
B29‐30 B29‐30‐050 1/9/2020 4.5 mg/kg 0.0004 0
B29‐31 B29‐31‐010 1/9/2020 0.5 mg/kg 0.0011 1
B29‐31 B29‐31‐050 1/9/2020 4.5 mg/kg 0.0004 0
B29‐32A B29‐32A‐010 1/14/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐32A B29‐32A‐050 1/14/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐32B B29‐32B‐010 1/14/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐32B B29‐32B‐050 1/14/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐32C B29‐32C‐010 1/14/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐32C B29‐32C‐050 1/14/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐33A B29‐33A‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐33A B29‐33A‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.00725 1 B29‐33B B29‐33B‐010 1/9/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐33B B29‐33B‐050 1/9/2020 1.5 mg/kg 0.225 1 0.323 1
sys_loc_code sys_sample_code sample_date start_depth report_result_unit Arsenic D_Arsenic Beryllium D_Beryllium Total PCBs D_Total PCBs Trichloroethene D_Trichloroethene B29‐33C B29‐33C‐010 1/9/2020 0.5 mg/kg 0.00537 0 0.000925 1 B29‐33C B29‐33C‐050 1/9/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐34A B29‐34A‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐34A B29‐34A‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐34B B29‐34B‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐34B B29‐34B‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐34C B29‐34C‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐34C B29‐34C‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐35A B29‐35A‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐35A B29‐35A‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐35B B29‐35B‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐35B B29‐35B‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.0004 0 B29‐35C B29‐35C‐010 1/8/2020 0.5 mg/kg 0.00537 0 0.0004 0 B29‐35C B29‐35C‐050 1/8/2020 4.5 mg/kg 0.00537 0 0.00553 1 DGA‐003 DGA‐003‐1 3/8/2022 1 mg/kg 0.00038 0
DGA‐003 DGA‐003‐10 3/8/2022 10 mg/kg 0.00038 0
DGA‐003 DGA‐003‐5 3/8/2022 5 mg/kg 0.00039 0
DGA‐004 DGA‐004‐1 3/8/2022 1 mg/kg 0.00038 0
DGA‐004 DGA‐004‐10 3/8/2022 10 mg/kg 0.00038 0
DGA‐004 DGA‐004‐5 3/8/2022 5 mg/kg 0.0029 1
DGA‐007 DGA‐007‐1 3/8/2022 1 mg/kg 0.00039 0
DGA‐007 DGA‐007‐5 3/8/2022 5 mg/kg 0.00038 0
DGA‐007 DGA‐007‐9.5 3/8/2022 9.5 mg/kg 0.00038 0
DGA‐008 DGA‐008‐1 3/8/2022 1 mg/kg 0.00038 0
DGA‐008 DGA‐008‐5 3/8/2022 5 mg/kg 0.0032 1
DGA‐008 DGA‐008‐9.5 3/8/2022 9.5 mg/kg 0.00039 0
DGA‐009 DGA‐009‐1 3/8/2022 1 mg/kg 0.00039 0
DGA‐009 DGA‐009‐10 3/8/2022 10 mg/kg 0.00039 0
DGA‐009 DGA‐009‐5 3/8/2022 5 mg/kg 0.00038 0
DGA‐011 DGA‐011‐10 3/8/2022 10 mg/kg 0.00038 0
DGA‐011 DGA‐011‐3.5 3/8/2022 3.5 mg/kg 0.00038 0
DGA‐011 DGA‐011‐5 3/8/2022 5 mg/kg 0.00038 0
DGA‐013 DGA‐013‐1 3/9/2022 1 mg/kg 0.00038 0
DGA‐013 DGA‐013‐10 3/9/2022 10 mg/kg 0.00038 0
DGA‐013 DGA‐013‐5 3/9/2022 5 mg/kg 0.00038 0
DGA‐014 DGA‐014‐10 3/9/2022 10 mg/kg 0.00039 0
DGA‐014 DGA‐014‐3.5 3/9/2022 3.5 mg/kg 0.00038 0
DGA‐014 DGA‐014‐5 3/9/2022 5 mg/kg 0.00038 0
DGA‐015 DGA‐015‐1 3/9/2022 1 mg/kg 0.00038 0
DGA‐015 DGA‐015‐10 3/9/2022 10 mg/kg 0.00038 0
DGA‐015 DGA‐015‐5 3/9/2022 5 mg/kg 0.00039 0
DGA‐016 DGA‐016‐1 3/9/2022 1 mg/kg 0.00038 0
DGA‐016 DGA‐016‐10 3/9/2022 10 mg/kg 0.00039 0
DGA‐016 DGA‐016‐5 3/9/2022 5 mg/kg 0.00038 0
DGA‐017 DGA‐017‐1 3/9/2022 1 mg/kg 0.00039 0
DGA‐017 DGA‐017‐10 3/9/2022 10 mg/kg 0.00038 0
DGA‐017 DGA‐017‐5 3/9/2022 5 mg/kg 0.00038 0
sys_loc_code sys_sample_code sample_date start_depth report_result_unit Arsenic D_Arsenic Beryllium D_Beryllium Total PCBs D_Total PCBs Trichloroethene D_Trichloroethene DGA‐019 DGA‐019‐1 3/9/2022 1 mg/kg 0.00038 0
DGA‐019 DGA‐019‐10 3/9/2022 10 mg/kg 0.00038 0
DGA‐019 DGA‐019‐6.5 3/9/2022 6.5 mg/kg 0.00039 0
DGA‐021 DGA‐021‐1 3/9/2022 1 mg/kg 0.00038 0
DGA‐021 DGA‐021‐10 3/9/2022 10 mg/kg 0.00038 0
DGA‐021 DGA‐021‐5 3/9/2022 5 mg/kg 0.00038 0
DGA‐022 DGA‐022‐1 3/9/2022 1 mg/kg 0.00039 0
DGA‐022 DGA‐022‐10 3/9/2022 10 mg/kg 0.00039 0
DGA‐022 DGA‐022‐5 3/9/2022 5 mg/kg 0.00038 0
DGA‐024 DGA‐024‐1 3/10/2022 1 mg/kg 0.43 1
DGA‐024 DGA‐024‐3 3/10/2022 3 mg/kg 0.16 1
DGA‐024 DGA‐024‐4.5 3/10/2022 4.5 mg/kg 0.041 1
DGA‐025 DGA‐025‐1.5 3/10/2022 1.5 mg/kg 0.58 1
DGA‐025 DGA‐025‐3 3/10/2022 3 mg/kg 0.051 1
DGA‐025 DGA‐025‐5 3/10/2022 5 mg/kg 0.033 1
DGA‐026 DGA‐026‐3 3/10/2022 3 mg/kg 0.0042 1
DGA‐026 DGA‐026‐4.5 3/10/2022 4.5 mg/kg 0.0045 1
DGA‐026 DGA‐026‐6 3/10/2022 6 mg/kg 0.0034 1
NCW‐021B NCW‐021‐B‐050 3/8/2022 5 mg/kg 1.13 0 0.112 0 0.00038 0 PW‐07 PW07‐1.5 7/28/2020 1.5 mg/kg 5.7 1 0.53 0 0.05 0 0.023 1 PW‐11 PW11‐1.5 7/28/2020 1.5 mg/kg 5 1 0.47 0 0.18 1 0.0071 0 PW‐12 PW12‐1.5 7/28/2020 1.5 mg/kg 4.5 1 0.54 0 0.05 0 0.0042 0 PW‐15 PW15‐1 7/28/2020 1.5 mg/kg 2.8 1 0.45 0 0.05 0
UT‐22 SSS00320 (UT‐22‐01) 4/23/2013 1 mg/kg 0.0003 0
UT‐22 SSS00321 (UT‐22‐05) 4/23/2013 5 mg/kg 0.0003 0
UT‐23 SSS00322 (UT‐23‐01) 4/23/2013 1 mg/kg 0.014 0 0.0003 0 UT‐23 SSS00323 (UT‐23‐05) 4/23/2013 5 mg/kg 0.014 0 0.059 1 UT‐24 SSS00324 (UT‐24‐01) 4/23/2013 1 mg/kg 0.014 0 0.0003 0 UT‐24 SSS00325 (UT‐24‐05) 4/23/2013 5 mg/kg 0.014 0 0.0003 0 UT‐25 SSS00326 (UT‐25‐01) 4/29/2013 1 mg/kg 0.014 0 0.0003 0 UT‐25 SSS00327 (UT‐25‐05) 4/29/2013 5 mg/kg 0.014 0 0.0003 0 UT‐25 SSS00420 (UT‐25‐01A) 4/23/2013 1 mg/kg 0.014 0 0.0003 0 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52

ABCDEFGH I J K L
Mean (detects) 5.417
Theta hat (MLE) 4.421 Theta star (bias corrected MLE) 4.631 nu hat (MLE) 132.4 nu star (bias corrected) 126.3
Detected Data Not Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 1.226 k star (bias corrected MLE) 1.17
K-S Test Statistic 0.203 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.124 Detected Data Not Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 4.394 Anderson-Darling GOF Test
5% A-D Critical Value 0.774 Detected Data Not Gamma Distributed at 5% Significance Level

97.5% KM Chebyshev UCL 10.13 99% KM Chebyshev UCL 13.22 95% KM (z) UCL 6.296 95% KM Bootstrap t UCL 6.717
90% KM Chebyshev UCL 7.426 95% KM Chebyshev UCL 8.56
KM SD 6.402 95% KM (BCA) UCL 6.313
95% KM (t) UCL 6.318 95% KM (Percentile Bootstrap) UCL 6.381 Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 4.923 KM Standard Error of Mean 0.834
5% Lilliefors Critical Value 0.12 Detected Data Not Normal at 5% Significance Level Detected Data Not Normal at 5% Significance Level
5% Shapiro Wilk P Value 0 Detected Data Not Normal at 5% Significance Level Lilliefors Test Statistic 0.328 Lilliefors GOF Test
Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.597 Normal GOF Test on Detected Observations Only Skewness Detects 2.09 Kurtosis Detects 2.904
Mean of Logged Detects 1.229 SD of Logged Detects 0.868 Mean Detects 5.417 SD Detects 6.627
Median Detects 2.765 CV Detects 1.223
Maximum Detect 24.6 Maximum Non-Detect 1.13
Variance Detects 43.92 Percent Non-Detects 10%
Number of Distinct Detects 53 Number of Distinct Non-Detects 2 Minimum Detect 1.1 Minimum Non-Detect 0.46
Number of Missing Observations 104
Number of Detects 54 Number of Non-Detects 6
General Statistics
Total Number of Observations 60 Number of Distinct Observations 55 Number of Bootstrap Operations 2000
Arsenic
From File 2022-0426-HAI-ProUCL_B29_ParcelA_Vadose.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.14/26/2022 1:41:49 PM 53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
101
102
103
104

ABCDEFGH I J K L
DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
KM SD (logged) 1.011 95% Critical H Value (KM-Log) 2.37 KM Standard Error of Mean (logged) 0.132
KM SD (logged) 1.011 95% Critical H Value (KM-Log) 2.37 KM Standard Error of Mean (logged) 0.132 95% H-UCL (KM -Log) 6.381 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 1.031 KM Geo Mean 2.804
95% BCA Bootstrap UCL 6.68 95% Bootstrap t UCL 6.74
95% H-UCL (Log ROS) 6.425
SD in Original Scale 6.454 SD in Log Scale 1.011
95% t UCL (assumes normality of ROS data) 6.319 95% Percentile Bootstrap UCL 6.324 Detected Data Not Lognormal at 5% Significance Level
Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 4.927 Mean in Log Scale 1.036
Lilliefors Test Statistic 0.147 Lilliefors GOF Test
5% Lilliefors Critical Value 0.12 Detected Data Not Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Approximate Test Statistic 0.861 Shapiro Wilk GOF Test 5% Shapiro Wilk P Value 1.3848E-6 Detected Data Not Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 6.681 95% Gamma Adjusted KM-UCL (use when n<50) 6.732 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (68.75, α) 50.67 Adjusted Chi Square Value (68.75, β) 50.28 80% gamma percentile (KM) 8.114 90% gamma percentile (KM) 12.94 95% gamma percentile (KM) 18.01 99% gamma percentile (KM) 30.34 nu hat (KM) 70.97 nu star (KM) 68.75
theta hat (KM) 8.325 theta star (KM) 8.593
Variance (KM) 40.99 SE of Mean (KM) 0.834
k hat (KM) 0.591 k star (KM) 0.573
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 4.923 SD (KM) 6.402
Approximate Chi Square Value (75.49, α) 56.47 Adjusted Chi Square Value (75.49, β) 56.07 95% Gamma Approximate UCL (use when n>=50) 6.518 95% Gamma Adjusted UCL (use when n<50) 6.565 nu hat (MLE) 78.05 nu star (bias corrected) 75.49
Adjusted Level of Significance (β) 0.046
k hat (MLE) 0.65 k star (bias corrected MLE) 0.629
Theta hat (MLE) 7.497 Theta star (bias corrected MLE) 7.752 Maximum 24.6 Median 2.61
SD 6.49 CV 1.331
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 4.877
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

ABCDEFGH I J K L
Detected data appear Gamma Distributed at 5% Significance Level K-S Test Statistic 0.0784 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.14 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.333 Anderson-Darling GOF Test
5% A-D Critical Value 0.75 Detected data appear Gamma Distributed at 5% Significance Level

97.5% KM Chebyshev UCL 0.46 99% KM Chebyshev UCL 0.535
95% KM (z) UCL 0.366 95% KM Bootstrap t UCL 0.368
90% KM Chebyshev UCL 0.394 95% KM Chebyshev UCL 0.421
KM SD 0.133 95% KM (BCA) UCL 0.367
95% KM (t) UCL 0.367 95% KM (Percentile Bootstrap) UCL 0.366 Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 0.333 KM Standard Error of Mean 0.0204
5% Lilliefors Critical Value 0.139 Detected Data appear Normal at 5% Significance Level Detected Data appear Normal at 5% Significance Level
5% Shapiro Wilk Critical Value 0.94 Detected Data appear Normal at 5% Significance Level Lilliefors Test Statistic 0.109 Lilliefors GOF Test
Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.95 Shapiro Wilk GOF Test
Skewness Detects 0.394 Kurtosis Detects -0.665
Mean of Logged Detects -1.129 SD of Logged Detects 0.392 Mean Detects 0.347 SD Detects 0.13
Median Detects 0.348 CV Detects 0.373
Maximum Detect 0.627 Maximum Non-Detect 0.54
Variance Detects 0.0168 Percent Non-Detects 13.04%
Number of Distinct Detects 40 Number of Distinct Non-Detects 6 Minimum Detect 0.152 Minimum Non-Detect 0.112
Number of Missing Observations 118
Number of Detects 40 Number of Non-Detects 6
Beryllium
General Statistics
Total Number of Observations 46 Number of Distinct Observations 46 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.

Recommendations are based upon data size, data distribution, and skewness.

These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).

However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.

Suggested UCL to Use
95% KM (Chebyshev) UCL 8.56
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Data do not follow a Discernible Distribution at 5% Significance Level SD in Original Scale 6.47 SD in Log Scale 1.133
95% t UCL (Assumes normality) 6.3 95% H-Stat UCL 7.368
Mean in Original Scale 4.904 Mean in Log Scale 0.974
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208

ABCDEFGH I J K L
Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) -1.189 KM Geo Mean 0.305
95% BCA Bootstrap UCL 0.364 95% Bootstrap t UCL 0.365
95% H-UCL (Log ROS) 0.374
SD in Original Scale 0.13 SD in Log Scale 0.411
95% t UCL (assumes normality of ROS data) 0.364 95% Percentile Bootstrap UCL 0.363 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 0.332 Mean in Log Scale -1.18
Lilliefors Test Statistic 0.0931 Lilliefors GOF Test
5% Lilliefors Critical Value 0.139 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.956 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.94 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 0.369 95% Gamma Adjusted KM-UCL (use when n<50) 0.37 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (542.34, α) 489.3 Adjusted Chi Square Value (542.34, β) 487.7 80% gamma percentile (KM) 0.439 90% gamma percentile (KM) 0.516 95% gamma percentile (KM) 0.585 99% gamma percentile (KM) 0.731 nu hat (KM) 578.8 nu star (KM) 542.3
theta hat (KM) 0.0529 theta star (KM) 0.0564
Variance (KM) 0.0176 SE of Mean (KM) 0.0204
k hat (KM) 6.291 k star (KM) 5.895
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 0.333 SD (KM) 0.133
Approximate Chi Square Value (542.00, α) 489 Adjusted Chi Square Value (542.00, β) 487.4 95% Gamma Approximate UCL (use when n>=50) 0.369 95% Gamma Adjusted UCL (use when n<50) 0.37 nu hat (MLE) 578.4 nu star (bias corrected) 542
Adjusted Level of Significance (β) 0.0448
k hat (MLE) 6.287 k star (bias corrected MLE) 5.891
Theta hat (MLE) 0.0529 Theta star (bias corrected MLE) 0.0564 Maximum 0.627 Median 0.316
SD 0.13 CV 0.392
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.115 Mean 0.333
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.

Mean (detects) 0.347
Theta hat (MLE) 0.0487 Theta star (bias corrected MLE) 0.0525 nu hat (MLE) 570.8 nu star (bias corrected) 529.3
Gamma Statistics on Detected Data Only
k hat (MLE) 7.135 k star (bias corrected MLE) 6.617
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260

ABCDEFGH I J K L

97.5% KM Chebyshev UCL 0.138 99% KM Chebyshev UCL 0.201 95% KM (z) UCL 0.0599 95% KM Bootstrap t UCL 0.131
90% KM Chebyshev UCL 0.083 95% KM Chebyshev UCL 0.106
KM SD 0.146 95% KM (BCA) UCL 0.0623
95% KM (t) UCL 0.0603 95% KM (Percentile Bootstrap) UCL 0.0628 Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 0.0319 KM Standard Error of Mean 0.017
5% Lilliefors Critical Value 0.262 Detected Data Not Normal at 5% Significance Level Detected Data Not Normal at 5% Significance Level
5% Shapiro Wilk Critical Value 0.842 Detected Data Not Normal at 5% Significance Level Lilliefors Test Statistic 0.392 Lilliefors GOF Test
Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.552 Shapiro Wilk GOF Test Skewness Detects 2.925 Kurtosis Detects 8.896
Mean of Logged Detects -2.626 SD of Logged Detects 1.649 Mean Detects 0.217 SD Detects 0.389
Median Detects 0.113 CV Detects 1.791
Maximum Detect 1.3 Maximum Non-Detect 0.05
Variance Detects 0.151 Percent Non-Detects 87.8%
Number of Distinct Detects 10 Number of Distinct Non-Detects 5 Minimum Detect 0.00566 Minimum Non-Detect 0.00537
Number of Missing Observations 91
Number of Detects 10 Number of Non-Detects 72
Total PCBs
General Statistics
Total Number of Observations 82 Number of Distinct Observations 15 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.

Recommendations are based upon data size, data distribution, and skewness.

These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).

However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.

Suggested UCL to Use
95% KM (t) UCL 0.367
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 0.136 SD in Log Scale 0.503
95% t UCL (Assumes normality) 0.36 95% H-Stat UCL 0.384 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 0.326 Mean in Log Scale -1.225
KM SD (logged) 0.437 95% Critical H Value (KM-Log) 1.843 KM Standard Error of Mean (logged) 0.0677
KM SD (logged) 0.437 95% Critical H Value (KM-Log) 1.843 KM Standard Error of Mean (logged) 0.0677 95% H-UCL (KM -Log) 0.378 261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312

ABCDEFGH I J K L
Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 0.0277 Mean in Log Scale -8.237
Lilliefors Test Statistic 0.177 Lilliefors GOF Test
5% Lilliefors Critical Value 0.262 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.95 Shapiro Wilk GOF Test
5% Shapiro Wilk Critical Value 0.842 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 0.0871 95% Gamma Adjusted KM-UCL (use when n<50) 0.0888 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (8.89, α) 3.258 Adjusted Chi Square Value (8.89, β) 3.197 80% gamma percentile (KM) 0.00568 90% gamma percentile (KM) 0.0538 95% gamma percentile (KM) 0.174 99% gamma percentile (KM) 0.673 nu hat (KM) 7.839 nu star (KM) 8.886
theta hat (KM) 0.668 theta star (KM) 0.589
Variance (KM) 0.0213 SE of Mean (KM) 0.017
k hat (KM) 0.0478 k star (KM) 0.0542
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 0.0319 SD (KM) 0.146
Approximate Chi Square Value (97.08, α) 75.35 Adjusted Chi Square Value (97.08, β) 75.01 95% Gamma Approximate UCL (use when n>=50) 0.0454 95% Gamma Adjusted UCL (use when n<50) 0.0456 nu hat (MLE) 99.38 nu star (bias corrected) 97.08
Adjusted Level of Significance (β) 0.0471
k hat (MLE) 0.606 k star (bias corrected MLE) 0.592
Theta hat (MLE) 0.0582 Theta star (bias corrected MLE) 0.0595 Maximum 1.3 Median 0.01
SD 0.146 CV 4.153
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.00566 Mean 0.0352
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.

Mean (detects) 0.217
Theta hat (MLE) 0.382 Theta star (bias corrected MLE) 0.468 nu hat (MLE) 11.35 nu star (bias corrected) 9.277
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.567 k star (bias corrected MLE) 0.464
K-S Test Statistic 0.218 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.28 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.486 Anderson-Darling GOF Test
5% A-D Critical Value 0.772 Detected data appear Gamma Distributed at 5% Significance Level 313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364

ABCDEFGH I J K L
5% Lilliefors Critical Value 0.139 Detected Data Not Normal at 5% Significance Level Detected Data Not Normal at 5% Significance Level
5% Shapiro Wilk Critical Value 0.94 Detected Data Not Normal at 5% Significance Level Lilliefors Test Statistic 0.441 Lilliefors GOF Test
Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.231 Shapiro Wilk GOF Test Skewness Detects 5.95 Kurtosis Detects 36.39
Mean of Logged Detects -3.633 SD of Logged Detects 2.632 Mean Detects 1.287 SD Detects 6.053
Median Detects 0.0208 CV Detects 4.702
Maximum Detect 37.8 Maximum Non-Detect 0.0071
Variance Detects 36.64 Percent Non-Detects 73.68%
Number of Distinct Detects 39 Number of Distinct Non-Detects 11 Minimum Detect 6.4000E-4 Minimum Non-Detect 2.9000E-4
Number of Missing Observations 21
Number of Detects 40 Number of Non-Detects 112
Trichloroethene
General Statistics
Total Number of Observations 152 Number of Distinct Observations 49 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.

Recommendations are based upon data size, data distribution, and skewness.

These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).

However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.

Suggested UCL to Use
95% KM Approximate Gamma UCL 0.0871
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Gamma Distributed at 5% Significance Level SD in Original Scale 0.146 SD in Log Scale 1.249
95% t UCL (Assumes normality) 0.0654 95% H-Stat UCL 0.0378 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 0.0385 Mean in Log Scale -4.399
KM SD (logged) 1.03 95% Critical H Value (KM-Log) 2.262 KM Standard Error of Mean (logged) 0.13
KM SD (logged) 1.03 95% Critical H Value (KM-Log) 2.262 KM Standard Error of Mean (logged) 0.13 95% H-UCL (KM -Log) 0.0173 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) -4.844 KM Geo Mean 0.00788
95% BCA Bootstrap UCL 0.0792 95% Bootstrap t UCL 0.142
95% H-UCL (Log ROS) 0.445
SD in Original Scale 0.148 SD in Log Scale 3.327
95% t UCL (assumes normality of ROS data) 0.0548 95% Percentile Bootstrap UCL 0.0594 365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416

ABCDEFGH I J K L
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.939 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 1.516 95% Gamma Adjusted KM-UCL (use when n<50) 1.539 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (4.86, α) 1.086 Adjusted Chi Square Value (4.86, β) 1.069 80% gamma percentile (KM) 1.0331E-5 90% gamma percentile (KM) 0.0165 95% gamma percentile (KM) 0.498 99% gamma percentile (KM) 9.606 nu hat (KM) 3.593 nu star (KM) 4.855
theta hat (KM) 28.68 theta star (KM) 21.22
Variance (KM) 9.722 SE of Mean (KM) 0.256
k hat (KM) 0.0118 k star (KM) 0.016
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 0.339 SD (KM) 3.118
Approximate Chi Square Value (67.01, α) 49.17 Adjusted Chi Square Value (67.01, β) 49.03 95% Gamma Approximate UCL (use when n>=50) 0.472 95% Gamma Adjusted UCL (use when n<50) 0.473 nu hat (MLE) 67 nu star (bias corrected) 67.01
Adjusted Level of Significance (β) 0.0484
k hat (MLE) 0.22 k star (bias corrected MLE) 0.22
Theta hat (MLE) 1.57 Theta star (bias corrected MLE) 1.57 Maximum 37.8 Median 0.01
SD 3.128 CV 9.036
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 6.4000E-4 Mean 0.346
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.

Mean (detects) 1.287
Theta hat (MLE) 6.747 Theta star (bias corrected MLE) 6.665 nu hat (MLE) 15.26 nu star (bias corrected) 15.45
Detected Data Not Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.191 k star (bias corrected MLE) 0.193
K-S Test Statistic 0.272 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.155 Detected Data Not Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 4.797 Anderson-Darling GOF Test
5% A-D Critical Value 0.918 Detected Data Not Gamma Distributed at 5% Significance Level

97.5% KM Chebyshev UCL 1.939 99% KM Chebyshev UCL 2.887 95% KM (z) UCL 0.76 95% KM Bootstrap t UCL 6.504
90% KM Chebyshev UCL 1.107 95% KM Chebyshev UCL 1.455
KM SD 3.118 95% KM (BCA) UCL 0.836
95% KM (t) UCL 0.763 95% KM (Percentile Bootstrap) UCL 0.824 Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 0.339 KM Standard Error of Mean 0.256
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453

ABCDEFGH I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.

Recommendations are based upon data size, data distribution, and skewness.

These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).

However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.

Suggested UCL to Use
KM H-UCL 0.035
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Approximate Lognormal Distributed at 5% Significance Level SD in Original Scale 3.128 SD in Log Scale 2.588
95% t UCL (Assumes normality) 0.759 95% H-Stat UCL 0.0479 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 0.339 Mean in Log Scale -7.236
KM SD (logged) 2.393 95% Critical H Value (KM-Log) 3.786 KM Standard Error of Mean (logged) 0.197
KM SD (logged) 2.393 95% Critical H Value (KM-Log) 3.786 KM Standard Error of Mean (logged) 0.197 95% H-UCL (KM -Log) 0.035 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) -6.95 KM Geo Mean 9.5829E-4
95% BCA Bootstrap UCL 1.334 95% Bootstrap t UCL 6.724
95% H-UCL (Log ROS) 616.9
SD in Original Scale 3.128 SD in Log Scale 5.216
95% t UCL (assumes normality of ROS data) 0.759 95% Percentile Bootstrap UCL 0.82 Detected Data appear Approximate Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 0.339 Mean in Log Scale -10.39
Lilliefors Test Statistic 0.124 Lilliefors GOF Test
5% Lilliefors Critical Value 0.139 Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.94 Detected Data Not Lognormal at 5% Significance Level Building 29 Exposure Area
Planned Loading Dock Excavation Area
Construction Worker
sys_loc_code sys_sample_code sample_date start_depth report_result_unit Trichloroethene D_Trichloroethene B29‐05 B29‐05‐2 6/28/2016 1.5 mg/kg 0.015 1
B29‐05 B29‐05‐5 6/28/2016 4.5 mg/kg 0.014 1
B29‐06 B29‐06‐1 6/29/2016 0.5 mg/kg 0.00031 0
B29‐06 B29‐06‐5 6/29/2016 4.5 mg/kg 0.00029 0
B29‐22 B29‐22‐010 1/10/2020 0.5 mg/kg 1.33 1
B29‐22 B29‐22‐050 1/10/2020 4.5 mg/kg 0.0474 1
B29‐23 B29‐23‐010 1/10/2020 0.5 mg/kg 37.8 1
B29‐23 B29‐23‐050 1/10/2020 4.5 mg/kg 0.0502 1
B29‐24 B29‐24‐010 1/14/2020 0.5 mg/kg 7.83 1
B29‐24 B29‐24‐050 1/14/2020 4.5 mg/kg 0.0925 1
B29‐25 B29‐25‐010 1/9/2020 0.5 mg/kg 0.0004 0
B29‐25 B29‐25‐050 1/9/2020 4.5 mg/kg 0.000404 0
B29‐26 B29‐26‐050 1/14/2020 4.5 mg/kg 0.0186 1
B29‐26 B29‐26‐10 1/14/2020 0.5 mg/kg 0.737 1
B29‐27 B29‐27‐010 1/14/2020 0.5 mg/kg 0.275 1
B29‐27 B29‐27‐050 1/14/2020 4.5 mg/kg 0.00273 1
B29‐28 B29‐28‐010 1/14/2020 0.5 mg/kg 1.43 1
B29‐28 B29‐28‐050 1/14/2020 4.5 mg/kg 0.00228 1
B29‐32A B29‐32A‐010 1/14/2020 0.5 mg/kg 0.0004 0
B29‐32A B29‐32A‐050 1/14/2020 4.5 mg/kg 0.0004 0
B29‐32B B29‐32B‐010 1/14/2020 0.5 mg/kg 0.0004 0
B29‐32B B29‐32B‐050 1/14/2020 4.5 mg/kg 0.0004 0
B29‐32C B29‐32C‐010 1/14/2020 0.5 mg/kg 0.0004 0
B29‐32C B29‐32C‐050 1/14/2020 4.5 mg/kg 0.0004 0
DGA‐024 DGA‐024‐1 3/10/2022 1 mg/kg 0.43 1
DGA‐024 DGA‐024‐3 3/10/2022 3 mg/kg 0.16 1
DGA‐024 DGA‐024‐4.5 3/10/2022 4.5 mg/kg 0.041 1
DGA‐025 DGA‐025‐1.5 3/10/2022 1.5 mg/kg 0.58 1
DGA‐025 DGA‐025‐3 3/10/2022 3 mg/kg 0.051 1
DGA‐025 DGA‐025‐5 3/10/2022 5 mg/kg 0.033 1
DGA‐026 DGA‐026‐3 3/10/2022 3 mg/kg 0.0042 1
DGA‐026 DGA‐026‐4.5 3/10/2022 4.5 mg/kg 0.0045 1
PW‐07 PW07‐1.5 7/28/2020 1.5 mg/kg 0.023 1
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
51 52

ABCDEFGH I J K L
Gamma ROS Statistics using Imputed Non-Detects
Mean (detects) 2.216
Theta hat (MLE) 9.854 Theta star (bias corrected MLE) 9.869 nu hat (MLE) 10.35 nu star (bias corrected) 10.33
Detected Data Not Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.225 k star (bias corrected MLE) 0.225
K-S Test Statistic 0.23 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.2 Detected Data Not Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 2.274 Anderson-Darling GOF Test
5% A-D Critical Value 0.885 Detected Data Not Gamma Distributed at 5% Significance Level

97.5% KM Chebyshev UCL 8.827 99% KM Chebyshev UCL 13.15 95% KM (z) UCL 3.463 95% KM Bootstrap t UCL 29.99
90% KM Chebyshev UCL 5.043 95% KM Chebyshev UCL 6.628
KM SD 6.551 95% KM (BCA) UCL 3.716
95% KM (t) UCL 3.52 95% KM (Percentile Bootstrap) UCL 3.742 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 1.545 KM Standard Error of Mean 1.166
Lilliefors Test Statistic 0.453 Lilliefors GOF Test
5% Lilliefors Critical Value 0.18 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.306 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.914 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects -2.416 SD of Logged Detects 2.532 Median Detects 0.0502 CV Detects 3.577
Skewness Detects 4.504 Kurtosis Detects 20.83
Variance Detects 62.83 Percent Non-Detects 30.3%
Mean Detects 2.216 SD Detects 7.926
Minimum Detect 0.00228 Minimum Non-Detect 2.9000E-4
Maximum Detect 37.8 Maximum Non-Detect 4.0400E-4
Number of Detects 23 Number of Non-Detects 10
Number of Distinct Detects 23 Number of Distinct Non-Detects 4 General Statistics
Total Number of Observations 33 Number of Distinct Observations 27 Number of Bootstrap Operations 2000
Trichloroethene
From File 2022-0426-HAI-ProUCL_B29_ParcelA_Exc_Vadose_TCE.xls Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.14/26/2022 2:49:37 PM 53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
101
102
103
104

ABCDEFGH I J K L
DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
KM SD (logged) 3.348 95% Critical H Value (KM-Log) 6.021 KM Standard Error of Mean (logged) 0.596
KM SD (logged) 3.348 95% Critical H Value (KM-Log) 6.021 KM Standard Error of Mean (logged) 0.596 95% H-UCL (KM -Log) 150.6 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) -4.152 KM Geo Mean 0.0157
95% BCA Bootstrap UCL 5.517 95% Bootstrap t UCL 30.39
95% H-UCL (Log ROS) 572.7
SD in Original Scale 6.653 SD in Log Scale 3.607
95% t UCL (assumes normality of ROS data) 3.506 95% Percentile Bootstrap UCL 3.693 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 1.545 Mean in Log Scale -4.267
5% Lilliefors Critical Value 0.18 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.914 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.153 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.957 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 7.195 95% Gamma Adjusted KM-UCL (use when n<50) 7.84 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (4.67, α) 1.002 Adjusted Chi Square Value (4.67, β) 0.92 80% gamma percentile (KM) 0.567 90% gamma percentile (KM) 3.36 95% gamma percentile (KM) 8.896 99% gamma percentile (KM) 28.97 nu hat (KM) 3.669 nu star (KM) 4.669
theta hat (KM) 27.79 theta star (KM) 21.84
Variance (KM) 42.92 SE of Mean (KM) 1.166
k hat (KM) 0.0556 k star (KM) 0.0707
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 1.545 SD (KM) 6.551
Approximate Chi Square Value (13.81, α) 6.444 Adjusted Chi Square Value (13.81, β) 6.185 95% Gamma Approximate UCL (use when n>=50) 3.318 95% Gamma Adjusted UCL (use when n<50) 3.456 nu hat (MLE) 13.73 nu star (bias corrected) 13.81
Adjusted Level of Significance (β) 0.0419
k hat (MLE) 0.208 k star (bias corrected MLE) 0.209
Theta hat (MLE) 7.44 Theta star (bias corrected MLE) 7.394 Maximum 37.8 Median 0.0186
SD 6.652 CV 4.298
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.00228 Mean 1.548
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120

ABCDEFGH I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.

Recommendations are based upon data size, data distribution, and skewness.

These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).

However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.

Suggested UCL to Use

97.5% KM (Chebyshev) UCL 8.827
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Lognormal Distributed at 5% Significance Level SD in Original Scale 6.653 SD in Log Scale 3.56
95% t UCL (Assumes normality) 3.506 95% H-Stat UCL 429.5 Mean in Original Scale 1.545 Mean in Log Scale -4.282

APPENDIX C
Vapor Intrusion Evaluation Calculations
Building 99 Evaluation
TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDING 99

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Building 99Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 82 0.03 2.46 na 3900 na 6E‐04Trichloroethene 32 0.03 0.96 3 8.8 3E‐07 1E‐01 3E‐07 1E‐01

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2021_04_B99‐100_update\VI\01_2021_0428_VI_Calculations_B99.xlsx APRIL 2021 Building 100 Evaluation
TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDING 100

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Building 100Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 69 0.03 2.07 na 3900 na 5E‐04Trichloroethene 30 0.03 0.9 3 8.8 3E‐07 1E‐01 3E‐07 1E‐01

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2021_04_B99‐100_update\VI\02_2021_0428_VI_Calculations_B100.xlsx APRIL 2021 Point‐by‐Point Evaluation
TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDINGS 29, 99, AND 100

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B99‐V01
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 80 0.03 2.4 na 3900 na 6E‐04
B99‐V01 0E+00 6E‐04
Sample ID: B99‐V02
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 61 0.03 1.83 na 3900 na 5E‐04
B99‐V02 0E+00 5E‐04
Sample ID: B99‐V03
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 64 0.03 1.92 na 3900 na 5E‐04
B99‐V03 0E+00 5E‐04
Sample ID: B99‐V04
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
No VOCs Detected
B99‐V04 0E+00 0E+00

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0422_VI_Calculations_DataGap_max_01.xlsx JULY 2022 TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDINGS 29, 99, AND 100

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B99‐V05
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 82 0.03 2.46 na 3900 na 6E‐04
Trichloroethene 32 0.03 0.96 3 8.8 3E‐07 1E‐01
B99‐V05 3E‐07 1E‐01
Sample ID: B99‐V06
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 63 0.03 1.89 na 3900 na 5E‐04
B99‐V06 0E+00 5E‐04
Sample ID: B100‐V01
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Trichloroethene 30 0.03 0.9 3 8.8 3E‐07 1E‐01
B100‐V01 3E‐07 1E‐01
Sample ID: B100‐V02
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 69 0.03 2.07 na 3900 na 5E‐04
B100‐V02 0E+00 5E‐04

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B100‐V03
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
No VOCs Detected
B100‐V03 0E+00 0E+00
Sample ID: B29‐V04
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 210 0.03 6.3 2 180 3E‐06 4E‐02
Trichloroethene 7500 0.03 225 3 8.8 8E‐05 3E+01
B29‐V04 8E‐05 3E+01
Sample ID: B29‐V05
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 46 0.03 1.38 na 4400 na 3E‐04
Benzene 27 0.03 0.81 0.42 13 2E‐06 6E‐02
Ethylbenzene 47 0.03 1.41 4.9 4400 3E‐07 3E‐04
m,p‐Xylenes 190 0.03 5.7 na 440 na 1E‐02o‐Xylene 53 0.03 1.59 na 440 na 4E‐03 Tetrachloroethene 220 0.03 6.6 2 180 3E‐06 4E‐02
Toluene 180 0.03 5.4 na 1300 na 4E‐03
B29‐V05 6E‐06 1E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V06
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 110 0.03 3.3 na 3900 na 8E‐04
Toluene 44 0.03 1.32 na 1300 na 1E‐03
B29‐V06 0E+00 2E‐03
Sample ID: B29‐V07
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Chloroform (Trichloromethane) 240 0.03 7.2 0.53 430 1E‐05 2E‐02 m,p‐Xylenes 88 0.03 2.64 na 440 na 6E‐03o‐Xylene 31 0.03 0.93 na 440 na 2E‐03 Tetrachloroethene 2200 0.03 66 2 180 3E‐05 4E‐01
Toluene 46 0.03 1.38 na 1300 na 1E‐03
Trichloroethene 7800 0.03 234 3 8.8 8E‐05 3E+01
B29‐V07 1E‐04 3E+01
Sample ID: B29‐V08
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 52 0.03 1.56 na 3900 na 4E‐04
Tetrachloroethene 80 0.03 2.4 2 180 1E‐06 1E‐02
Trichloroethene 130 0.03 3.9 3 8.8 1E‐06 4E‐01
B29‐V08 3E‐06 5E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V09
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 110 0.03 3.3 na 4400 na 8E‐04
Chloroform (Trichloromethane) 170 0.03 5.1 0.53 430 1E‐05 1E‐02 Styrene 52 0.03 1.56 na 3900 na 4E‐04
Trichloroethene 11000 0.03 330 3 8.8 1E‐04 4E+01
B29‐V09 1E‐04 4E+01
Sample ID: B29‐V10
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 92 0.03 2.76 na 3900 na 7E‐04
Trichloroethene 120 0.03 3.6 3 8.8 1E‐06 4E‐01
B29‐V10 1E‐06 4E‐01
Sample ID: B29‐V11
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 66 0.03 1.98 na 3900 na 5E‐04
B29‐V11 0E+00 5E‐04
Sample ID: B29‐V12
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 53 0.03 1.59 na 3900 na 4E‐04
B29‐V12 0E+00 4E‐04

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V13
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 74 0.03 2.22 na 3900 na 6E‐04
B29‐V13 0E+00 6E‐04
Sample ID: B29‐V14
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 46 0.03 1.38 na 4400 na 3E‐04
Styrene 65 0.03 1.95 na 3900 na 5E‐04
B29‐V14 0E+00 8E‐04
Sample ID: B29‐V15
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 64 0.03 1.92 na 3900 na 5E‐04
Trichlorofluoromethane (CFC‐11) 60 0.03 1.8 na 5300 na 3E‐04 B29‐V15 0E+00 8E‐04
Sample ID: B29‐V16
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 790 0.03 23.7 na 4400 na 5E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 320 0.03 9.6 na 22000 na 4E‐04 Tetrachloroethene 340 0.03 10.2 2 180 5E‐06 6E‐02
Trichloroethene 16000 0.03 480 3 8.8 2E‐04 5E+01
B29‐V16 2E‐04 5E+01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V17
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 110 0.03 3.3 na 3900 na 8E‐04
Trichloroethene 43 0.03 1.29 3 8.8 4E‐07 1E‐01
B29‐V17 4E‐07 1E‐01
Sample ID: B29‐V18
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 62 0.03 1.86 na 3900 na 5E‐04
Tetrachloroethene 57 0.03 1.71 2 180 9E‐07 1E‐02
Trichloroethene 42 0.03 1.26 3 8.8 4E‐07 1E‐01
B29‐V18 1E‐06 2E‐01
Sample ID: B29‐V19
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 480 0.03 14.4 na 4400 na 3E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 1900 0.03 57 na 22000 na 3E‐03 1,1‐Dichloroethane 53 0.03 1.59 7.7 3500 2E‐07 5E‐04
cis‐1,2‐Dichloroethene 1300 0.03 39 na 35 na 1E+00Styrene 99 0.03 2.97 na 3900 na 8E‐04 trans‐1,2‐Dichloroethene 150 0.03 4.5 na 350 na 1E‐02
Trichloroethene 9800 0.03 294 3 8.8 1E‐04 3E+01
B29‐V19 1E‐04 3E+01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW01B‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 610 0.03 18.3 na 260 na 7E‐02
1,3,5‐Trimethylbenzene 220 0.03 6.6 na 260 na 3E‐02
4‐Ethyltoluene 130 0.03 3.9 na na na na4‐Isopropyltoluene 79 0.03 2.37 na na na naEthylbenzene 150 0.03 4.5 4.9 4400 9E‐07 1E‐03 m,p‐Xylenes 670 0.03 20.1 na 440 na 5E‐02n‐Propylbenzene 80 0.03 2.4 na 4400 na 5E‐04 o‐Xylene 240 0.03 7.2 na 440 na 2E‐02
Toluene 230 0.03 6.9 na 1300 na 5E‐03
Trichloroethene 140 0.03 4.2 3 8.8 1E‐06 5E‐01
PW01B‐SV‐5 2E‐06 6E‐01
Sample ID: PW06‐SV‐3.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 600 0.03 18 na 260 na 7E‐02
Chloroform (Trichloromethane) 1600 0.03 48 0.53 430 9E‐05 1E‐01 m,p‐Xylenes 1100 0.03 33 na 440 na 8E‐02Toluene 510 0.03 15.3 na 1300 na 1E‐02 Trichloroethene 160000 0.03 4800 3 8.8 2E‐03 5E+02
PW06‐SV‐3.5 2E‐03 5E+02

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW07‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 38 0.03 1.14 na 4400 na 3E‐04
1,2,4‐Trimethylbenzene 120 0.03 3.6 na 260 na 1E‐02
1,3,5‐Trimethylbenzene 48 0.03 1.44 na 260 na 6E‐03
4‐Ethyltoluene 22 0.03 0.66 na na na naChloroform (Trichloromethane) 160 0.03 4.8 0.53 430 9E‐06 1E‐02 Ethylbenzene 28 0.03 0.84 4.9 4400 2E‐07 2E‐04
m,p‐Xylenes 130 0.03 3.9 na 440 na 9E‐03o‐Xylene 40 0.03 1.2 na 440 na 3E‐03 Tetrachloroethene 330 0.03 9.9 2 180 5E‐06 6E‐02
Toluene 51 0.03 1.53 na 1300 na 1E‐03
Trichloroethene 7600 0.03 228 3 8.8 8E‐05 3E+01
PW07‐SV‐4 9E‐05 3E+01
Sample ID: PW08‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 530 0.03 15.9 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 270 0.03 8.1 na 260 na 3E‐02
4‐Ethyltoluene 160 0.03 4.8 na na na na4‐Isopropyltoluene 80 0.03 2.4 na na na naBenzene 75 0.03 2.25 0.42 13 5E‐06 2E‐01 Chloroform (Trichloromethane) 32 0.03 0.96 0.53 430 2E‐06 2E‐03 Ethylbenzene 340 0.03 10.2 4.9 4400 2E‐06 2E‐03
Isopropylbenzene 33 0.03 0.99 na 1800 na 6E‐04
m,p‐Xylenes 1300 0.03 39 na 440 na 9E‐02n‐Propylbenzene 120 0.03 3.6 na 4400 na 8E‐04 o‐Xylene 360 0.03 10.8 na 440 na 2E‐02
Tetrachloroethene 96 0.03 2.88 2 180 1E‐06 2E‐02
Toluene 670 0.03 20.1 na 1300 na 2E‐02
Trichloroethene 54 0.03 1.62 3 8.8 5E‐07 2E‐01
PW08‐SV‐5 1E‐05 6E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW09‐SV‐4.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 120 0.03 3.6 na 4400 na 8E‐04
1,2,4‐Trimethylbenzene 140 0.03 4.2 na 260 na 2E‐02
Bromodichloromethane 140 0.03 4.2 0.33 350 1E‐05 1E‐02
Chloroform (Trichloromethane) 410 0.03 12.3 0.53 430 2E‐05 3E‐02 m,p‐Xylenes 200 0.03 6 na 440 na 1E‐02Toluene 150 0.03 4.5 na 1300 na 3E‐03 Trichloroethene 14000 0.03 420 3 8.8 1E‐04 5E+01
PW09‐SV‐4.5 2E‐04 5E+01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW11‐SV‐3
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 5.6 0.03 0.168 na 22000 na 8E‐06 1,2,4‐Trimethylbenzene 110 0.03 3.3 na 260 na 1E‐02
1,3,5‐Trimethylbenzene 67 0.03 2.01 na 260 na 8E‐03
4‐Ethyltoluene 29 0.03 0.87 na na na na4‐Isopropyltoluene 8.8 0.03 0.264 na na na naAcetone 51 0.03 1.53 na 140000 na 1E‐05 Benzene 10 0.03 0.3 0.42 13 7E‐07 2E‐02
Bromodichloromethane 16 0.03 0.48 0.33 350 1E‐06 1E‐03
Chloroform (Trichloromethane) 14 0.03 0.42 0.53 430 8E‐07 1E‐03 Dibromochloromethane 12 0.03 0.36 0.58 350 6E‐07 1E‐03
Ethylbenzene 50 0.03 1.5 4.9 4400 3E‐07 3E‐04
Heptane 4.9 0.03 0.147 na 1800 na 8E‐05
Isobutane 5.1 0.03 0.153 na na na naIsopropylbenzene 5.9 0.03 0.177 na 1800 na 1E‐04 m,p‐Xylenes 160 0.03 4.8 na 440 na 1E‐02n‐Hexane 5.9 0.03 0.177 na 3100 na 6E‐05 n‐Propylbenzene 19 0.03 0.57 na 4400 na 1E‐04
o‐Xylene 70 0.03 2.1 na 440 na 5E‐03
Propylene 7.5 0.03 0.225 na 13000 na 2E‐05
Styrene 14 0.03 0.42 na 3900 na 1E‐04
Tetrachloroethene 16 0.03 0.48 2 180 2E‐07 3E‐03
Toluene 89 0.03 2.67 na 1300 na 2E‐03
Trichloroethene 5.9 0.03 0.177 3 8.8 6E‐08 2E‐02
PW11‐SV‐3 4E‐06 9E‐02

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW12‐SV‐3
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 400 0.03 12 na 260 na 5E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
2,2,4‐Trimethylpentane 12 0.03 0.36 na na na na4‐Ethyltoluene 110 0.03 3.3 na na na na4‐Isopropyltoluene 63 0.03 1.89 na na na naAcetone 59 0.03 1.77 na 140000 na 1E‐05 Benzene 36 0.03 1.08 0.42 13 3E‐06 8E‐02
Bromodichloromethane 17 0.03 0.51 0.33 350 2E‐06 1E‐03
Chloroform (Trichloromethane) 20 0.03 0.6 0.53 430 1E‐06 1E‐03 Cyclohexane 3.6 0.03 0.108 na 26000 na 4E‐06
Dibromochloromethane 9.5 0.03 0.285 0.58 350 5E‐07 8E‐04 Ethylbenzene 150 0.03 4.5 4.9 4400 9E‐07 1E‐03
Heptane 12 0.03 0.36 na 1800 na 2E‐04
Isopropylbenzene 20 0.03 0.6 na 1800 na 3E‐04
m,p‐Xylenes 710 0.03 21.3 na 440 na 5E‐02n‐Hexane 11 0.03 0.33 na 3100 na 1E‐04 n‐Propylbenzene 87 0.03 2.61 na 4400 na 6E‐04
o‐Xylene 200 0.03 6 na 440 na 1E‐02
Propylene 30 0.03 0.9 na 13000 na 7E‐05
sec‐Butylbenzene 8.1 0.03 0.243 na 1800 na 1E‐04
Styrene 19 0.03 0.57 na 3900 na 1E‐04
Tetrachloroethene 1500 0.03 45 2 180 2E‐05 3E‐01
Toluene 350 0.03 10.5 na 1300 na 8E‐03
Trichloroethene 35 0.03 1.05 3 8.8 4E‐07 1E‐01
PW12‐SV‐3 3E‐05 6E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW13‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 12 0.03 0.36 na 4400 na 8E‐05
1,2,4‐Trimethylbenzene 500 0.03 15 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
2,2,4‐Trimethylpentane 3.9 0.03 0.117 na na na na4‐Ethyltoluene 94 0.03 2.82 na na na na4‐Isopropyltoluene 53 0.03 1.59 na na na naAcetone 43 0.03 1.29 na 140000 na 9E‐06 Benzene 8 0.03 0.24 0.42 13 6E‐07 2E‐02
Benzyl chloride 9.8 0.03 0.294 0.25 4.4 1E‐06 7E‐02
Chloroform (Trichloromethane) 26 0.03 0.78 0.53 430 1E‐06 2E‐03 cis‐1,2‐Dichloroethene 3.8 0.03 0.114 na 35 na 3E‐03
Dichlorodifluoromethane (R12) 17 0.03 0.51 na 440 na 1E‐03 Ethylbenzene 81 0.03 2.43 4.9 4400 5E‐07 6E‐04
Heptane 4.2 0.03 0.126 na 1800 na 7E‐05
Isopropylbenzene 11 0.03 0.33 na 1800 na 2E‐04
m,p‐Xylenes 400 0.03 12 na 440 na 3E‐02n‐Hexane 3.6 0.03 0.108 na 3100 na 3E‐05 n‐Propylbenzene 59 0.03 1.77 na 4400 na 4E‐04
o‐Xylene 140 0.03 4.2 na 440 na 1E‐02
Tetrachloroethene 4.7 0.03 0.141 2 180 7E‐08 8E‐04
Toluene 98 0.03 2.94 na 1300 na 2E‐03
Trichloroethene 91 0.03 2.73 3 8.8 9E‐07 3E‐01
Trichlorofluoromethane (CFC‐11) 94 0.03 2.82 na 5300 na 5E‐04 PW13‐SV‐4 5E‐06 5E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW14‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
cis‐1,2‐Dichloroethene 4300 0.03 129 na 35 na 4E+00Trichloroethene 64000 0.03 1920 3 8.8 6E‐04 2E+02 PW14‐SV‐4 6E‐04 2E+02
Sample ID: PW14‐SV‐4DUP
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
cis‐1,2‐Dichloroethene 4400 0.03 132 na 35 na 4E+00Trichloroethene 64000 0.03 1920 3 8.8 6E‐04 2E+02 PW14‐SV‐4DUP 6E‐04 2E+02
Sample ID: PW15‐SV‐4.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 1100 0.03 33 na 4400 na 8E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 740 0.03 22.2 na 22000 na 1E‐03 Trichloroethene 13000 0.03 390 3 8.8 1E‐04 4E+01
PW15‐SV‐4.5 1E‐04 4E+01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: PW16‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 35 0.03 1.05 na 4400 na 2E‐04
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 72 0.03 2.16 na 22000 na 1E‐04 1,2,4‐Trimethylbenzene 490 0.03 14.7 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
4‐Ethyltoluene 55 0.03 1.65 na na na na
4‐Isopropyltoluene 27 0.03 0.81 na na na naBenzene 7.6 0.03 0.228 0.42 13 5E‐07 2E‐02 Chloroform (Trichloromethane) 5.8 0.03 0.174 0.53 430 3E‐07 4E‐04 Ethylbenzene 61 0.03 1.83 4.9 4400 4E‐07 4E‐04
Isopropylbenzene 7.7 0.03 0.231 na 1800 na 1E‐04
m,p‐Xylenes 310 0.03 9.3 na 440 na 2E‐02Naphthalene 6.3 0.03 0.189 0.36 13 5E‐07 1E‐02 n‐Propylbenzene 36 0.03 1.08 na 4400 na 2E‐04
o‐Xylene 99 0.03 2.97 na 440 na 7E‐03
sec‐Butylbenzene 4.5 0.03 0.135 na 1800 na 8E‐05
Styrene 10 0.03 0.3 na 3900 na 8E‐05
Tetrachloroethene 16 0.03 0.48 2 180 2E‐07 3E‐03
Toluene 120 0.03 3.6 na 1300 na 3E‐03
Trichloroethene 25 0.03 0.75 3 8.8 3E‐07 9E‐02
Trichlorofluoromethane (CFC‐11) 6.7 0.03 0.201 na 5300 na 4E‐05 PW16‐SV‐5 2E‐06 2E‐01
Sample ID: DGA‐003‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 160 0.03 4.8 na 22000 na 2E‐04 Benzene 20 0.03 0.6 0.42 13 1E‐06 5E‐02
Trichloroethene 260 0.03 7.8 3 8.8 3E‐06 9E‐01
DGA‐003‐2‐SG 4E‐06 9E‐01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐004‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 2000 0.03 60 na 4400 na 1E‐02
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 1600 0.03 48 na 22000 na 2E‐03 1,1‐Dichloroethane 430 0.03 12.9 7.7 3500 2E‐06 4E‐03
Benzene 24 0.03 0.72 0.42 13 2E‐06 6E‐02
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 cis‐1,2‐Dichloroethene 5800 0.03 174 na 35 na 5E+00
Tetrachloroethene 100 0.03 3 2 180 2E‐06 2E‐02
trans‐1,2‐Dichloroethene 340 0.03 10.2 na 350 na 3E‐02
Trichloroethene 18000 0.03 540 3 8.8 2E‐04 6E+01
DGA‐004‐1‐SG 2E‐04 7E+01
Sample ID: DGA‐007‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 3300 0.03 99 na 4400 na 2E‐02
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 2600 0.03 78 na 22000 na 4E‐03 1,1‐Dichloroethene 150 0.03 4.5 na 310 na 1E‐02
Benzene 36 0.03 1.08 0.42 13 3E‐06 8E‐02
Chloroform (Trichloromethane) 120 0.03 3.6 0.53 430 7E‐06 8E‐03 Tetrachloroethene 20 0.03 0.6 2 180 3E‐07 3E‐03
Trichloroethene 5600 0.03 168 3 8.8 6E‐05 2E+01
DGA‐007‐2‐SG 7E‐05 2E+01

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐008‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1‐Difluoroethane 110 0.03 3.3 na 180000 na 2E‐05
Trichloroethene 1300 0.03 39 3 8.8 1E‐05 4E+00
DGA‐008‐2‐SG 1E‐05 4E+00
Sample ID: DGA‐009‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1‐Dichloroethane 120 0.03 3.6 7.7 3500 5E‐07 1E‐03
Benzene 34 0.03 1.02 0.42 13 2E‐06 8E‐02
cis‐1,2‐Dichloroethene 17000 0.03 510 na 35 na 1E+01Tetrachloroethene 66 0.03 1.98 2 180 1E‐06 1E‐02 trans‐1,2‐Dichloroethene 470 0.03 14.1 na 350 na 4E‐02
Trichloroethene 2300 0.03 69 3 8.8 2E‐05 8E+00
Vinyl chloride 36 0.03 1.08 0.16 440 7E‐06 2E‐03
DGA‐009‐2‐SG 3E‐05 2E+01
Sample ID: DGA‐011‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 35 0.03 1.05 2 180 5E‐07 6E‐03
Trichloroethene 860 0.03 25.8 3 8.8 9E‐06 3E+00
DGA‐011‐2‐SG 9E‐06 3E+00

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐013‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 180 0.03 5.4 2 180 3E‐06 3E‐02
Trichloroethene 54 0.03 1.62 3 8.8 5E‐07 2E‐01
DGA‐013‐1‐SG 3E‐06 2E‐01
Sample ID: DGA‐014‐2.5‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 260 0.03 7.8 2 180 4E‐06 4E‐02
DGA‐014‐2.5‐SG 4E‐06 4E‐02
Sample ID: DGA‐015‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
No Detections
DGA‐015‐2‐SG 0E+00 0E+00

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐016‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 56 0.03 1.68 0.42 13 4E‐06 1E‐01
Chloroform (Trichloromethane) 61 0.03 1.83 0.53 430 3E‐06 4E‐03 Toluene 200 0.03 6 na 1300 na 5E‐03
Trichloroethene 4900 0.03 147 3 8.8 5E‐05 2E+01
DGA‐016‐2‐SG 6E‐05 2E+01
Sample ID: DGA‐017‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 150 0.03 4.5 na 4400 na 1E‐03
Chloroform (Trichloromethane) 140 0.03 4.2 0.53 430 8E‐06 1E‐02 Trichloroethene 2700 0.03 81 3 8.8 3E‐05 9E+00
DGA‐017‐1‐SG 3E‐05 9E+00
Sample ID: DGA‐019‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 26 0.03 0.78 0.42 13 2E‐06 6E‐02
Chloroform (Trichloromethane) 30 0.03 0.9 0.53 430 2E‐06 2E‐03 Trichloroethene 2600 0.03 78 3 8.8 3E‐05 9E+00
DGA‐019‐2‐SG 3E‐05 9E+00

USING SOIL VAPOR MAXIMUM CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐021‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 560 0.03 16.8 2 180 8E‐06 9E‐02
Trichloroethene 770 0.03 23.1 3 8.8 8E‐06 3E+00
DGA‐021‐1‐SG 2E‐05 3E+00
Sample ID: DGA‐022‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 30 0.03 0.9 0.42 13 2E‐06 7E‐02
Chloroform (Trichloromethane) 190 0.03 5.7 0.53 430 1E‐05 1E‐02 Tetrachloroethene 98 0.03 2.94 2 180 1E‐06 2E‐02
Trichloroethene 860 0.03 25.8 3 8.8 9E‐06 3E+00
DGA‐022‐2‐SG 2E‐05 3E+00

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0422_VI_Calculations_DataGap_max_01.xlsx JULY 2022

APPENDIX D
Risk Calculations – Exposure Area-Specific HHRA
Building 99/100 Exposure Area
Construction Worker

Page 1 of 6 ends

Appendix D, Table 1Cancer Risk Calculations - Single AgeMaximum Concentrations - SoilFUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Exposure Routes Evaluated ELCR (Total)
Human Health Risk Assessment Incidental Ingestion Yes 5E-08 Building 99/100 Exposure Area Dermal Contact Yes 4E-08Parcel A, North Campus Particulate Inhalation Yes 1E-08 Ambient Vapor Inhalation Yes 0E+00
1E-07
NC - not carcinogenic by this exposure route NV - not volatile EC - exposure concentration CSF - cancer slope factor ELCR - excess lifetime cancer risk COPC - chemical of potential concernNTV - no toxicity value available DAD - dermally absorbed dose ABS - absorption factor UR - cancer unit risk EPC - exposure point concentration Intake Calculations Absorption Factors Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd CSForal CSFdermal IUR ELCRingestion ELCRdermal ELCRparticulate ELCRvapor ELCRtotal (mg/kg) (mg/kg/day) (mg/kg/day) (ug/m3) (ug/m3) (unitless) (unitless) (mg/kg/day)-1 (mg/kg/day)-1 (ug/m3)-1 Barium 7440-39-3 3.9E+02 NC NC NC NV NC NC NC NC NC NV
Beryllium 7440-41-7 1.4E+00 NC NC 4.5E-06 NV NC NC NC NC 2.4E-03 1E-08 NV 1E-08 Copper 7440-50-8 2.9E+01 NC NC NC NV NC NC NC NC NC NV
Zinc 7440-66-6 7.8E+01 NC NC NC NV NC NC NC NC NC NV
Aroclor-1254 11097-69-1 1.2E-01 4.8E-09 6.2E-09 3.9E-07 NV 1 0.15 2.0E+00 2.0E+00 5.7E-04 1E-08 1E-08 2E-10 NV 2E-08 DDD 72-54-8 3.1E-02 1.3E-09 5.3E-10 1.0E-07 NV 1 0.05 2.4E-01 2.4E-01 6.9E-05 3E-10 1E-10 7E-12 NV 4E-10DDE 72-55-9 1.0E+00 4.0E-08 1.7E-08 3.3E-06 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 1E-08 6E-09 3E-10 NV 2E-08 DDT 50-29-3 2.3E-01 9.3E-09 4.0E-09 7.5E-07 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 3E-09 1E-09 7E-11 NV 5E-09Chlordane 12789-03-6 3.3E-02 1.3E-09 5.7E-10 1.1E-07 NV 1 0.05 3.5E-01 3.5E-01 1.0E-04 5E-10 2E-10 1E-11 NV 7E-10 Heptachlor Epoxide 1024-57-3 2.2E-02 8.9E-10 3.8E-10 7.2E-08 NV 1 0.05 9.1E+00 9.1E+00 2.6E-03 8E-09 3E-09 2E-10 NV 1E-08 Acenaphthene 83-32-9 6.1E-03 NC NC NC NV NC NC NC 0.0E+00 NC NVAcenaphthylene 208-96-8 1.1E-02 NC NC NC NV NC NC NC NC NC NV Anthracene 120-12-7 8.2E-03 NC NC NC NV NC NC NC NC NC NV Benz[a]anthracene 56-55-3 9.2E-03 3.7E-10 4.8E-10 3.0E-08 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 4E-11 5E-11 3E-12 NV 9E-11 Benzo[a]pyrene 50-32-8 1.9E-02 7.7E-10 9.8E-10 6.2E-08 NV 1 0.15 1.0E+00 1.0E+00 1.1E-03 8E-10 1E-09 7E-11 NV 2E-09 Benzo[b]fluoranthene 205-99-2 2.1E-02 8.5E-10 1.1E-09 6.8E-08 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 8E-11 1E-10 8E-12 NV 2E-10 Benzo(g,h,i)perylene 191-24-2 2.8E-02 NC NC NC NV NC NC NC NC NC NV Benzo[k]fluoranthene 207-08-9 4.7E-02 1.9E-09 2.4E-09 1.5E-07 NV 1 0.15 1.0E-02 1.0E-02 1.1E-04 2E-11 2E-11 2E-11 NV 6E-11 Chrysene 218-01-9 2.0E-02 8.1E-10 1.0E-09 6.5E-08 NV 1 0.15 1.0E-03 1.0E-03 1.1E-05 8E-13 1E-12 7E-13 NV 3E-12 Dibenz[a,h]anthracene 53-70-3 6.0E-02 2.4E-09 3.1E-09 2.0E-07 NV 1 0.15 4.1E+00 4.1E+00 1.2E-03 1E-08 1E-08 2E-10 NV 2E-08 Fluoranthene 206-44-0 5.4E-02 NC NC NC NV NC NC NC NC NC NV Fluorene 86-73-7 3.8E-03 NC NC NC NV NC NC NC NC NC NV
Indeno[1,2,3-cd]pyrene 193-39-5 1.1E-01 4.4E-09 5.7E-09 3.6E-07 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 4E-10 6E-10 4E-11 NV 1E-09 Phenanthrene 85-01-8 2.3E-02 NC NC NC NV NC NC NC NC NC NV Pyrene 129-00-0 5.8E-02 NC NC NC NV NC NC NC NC NC NV
Methyl Ethyl Ketone (2-Butanone) 78-93-3 2.2E-02 NC NC NC NC NC NC NC NC NC Acetone 67-64-1 7.6E-02 NC NC NC NC NC NC NC NC NC
Cymene (p-Isopropyltoluene) 99-87-6 2.9E-02 NC NC NC NC NC NC NC NC NC m,p-Xylenes 179601-23-1 7.6E-04 NC NC NC NC NC NC NC NC NC

CASRNCOPC
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, Cancer Risk-single July 2022

Page 2 of 6 ends

Appendix D, Table 2Non-Cancer Risk CalculationsMaximum Concentrations - SoilFUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Exposure Routes Evaluated HI (Total)
Human Health Risk Assessment Incidental Ingestion Yes 6E-02Building 99/100 Exposure Area Dermal Contact Yes 3E-02 Parcel A, North Campus Particulate Inhalation Yes 2E-01 Ambient Vapor Inhalation Yes 5E-06

0.3 NV - not volatile EC - exposure concentration RfD - reference dose HI - hazard index EPC - exposure point concentration (if blank, then COPC was not detected) V - volatile DAD - dermally absorbed dose RfC - reference concentration HQ - hazard quotient COPC - chemical of potential concern NTV - no toxicity value available ABS - absorption factor Intake Calculations Absorption Factors Non-Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd RfDoral RfDdermal RfC HQingestion HQdermal HQparticulate HQvapor HQtotal (mg/kg) (mg/kg/day) (mg/kg/day) (mg/m3) (mg/m3) (unitless) (unitless) (mg/kg/day) (mg/kg/day) (mg/m3) Barium 7440-39-3 3.9E+02 1.1E-03 9.0E-05 NV 1 2.0E-01 1.4E-02 5.0E-04 5.6E-03 1.8E-01 NV 2E-01 Beryllium 7440-41-7 1.4E+00 3.9E-06 3.2E-07 NV 1 2.0E-04 1.4E-06 7.0E-06 1.9E-02 4.5E-02 NV 6E-02 Copper 7440-50-8 2.9E+01 8.1E-05 6.6E-06 NV 1 4.0E-02 4.0E-02 2.0E-03 NTV NV 2E-03 Zinc 7440-66-6 7.8E+01 2.2E-04 1.8E-05 NV 1 3.0E-01 3.0E-01 7.4E-04 NTV NV 7E-04 Aroclor-1254 11097-69-1 1.2E-01 3.4E-07 4.3E-07 2.7E-08 NV 1 0.15 2.0E-05 2.0E-05 8.0E-05 1.7E-02 2.2E-02 3.4E-04 NV 4E-02 DDD 72-54-8 3.1E-02 8.8E-08 3.7E-08 7.1E-09 NV 1 0.05 3.0E-05 3.0E-05 2.9E-03 1.2E-03 NTV NV 4E-03 DDE 72-55-9 1.0E+00 2.8E-06 1.2E-06 2.3E-07 NV 1 0.05 3.0E-04 3.0E-04 1.2E-03 9.4E-03 4.0E-03 1.9E-04 NV 1E-02 DDT 50-29-3 2.3E-01 6.5E-07 2.8E-07 5.3E-08 NV 1 0.05 5.0E-04 5.0E-04 1.3E-03 5.6E-04 NTV NV 2E-03 Chlordane 12789-03-6 3.3E-02 9.3E-08 4.0E-08 7.5E-09 NV 1 0.05 5.0E-04 5.0E-04 7.0E-04 1.9E-04 8.0E-05 1.1E-05 NV 3E-04 Heptachlor Epoxide 1024-57-3 2.2E-02 6.2E-08 2.7E-08 5.0E-09 NV 1 0.05 1.3E-05 1.3E-05 5.2E-05 4.8E-03 2.0E-03 9.7E-05 NV 7E-03 Acenaphthene 83-32-9 6.1E-03 1.7E-08 2.2E-08 1.4E-09 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 2.9E-07 3.7E-07 5.8E-09 NV 7E-07 Acenaphthylene 208-96-8 1.1E-02 3.1E-08 4.0E-08 2.5E-09 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 5.2E-07 6.6E-07 1.0E-08 NV 1E-06Anthracene 120-12-7 8.2E-03 2.3E-08 3.0E-08 1.9E-09 NV 1 0.15 3.0E-01 3.0E-01 1.2E+00 7.7E-08 9.9E-08 1.6E-09 NV 2E-07 Benz[a]anthracene 56-55-3 9.2E-03 2.6E-08 3.3E-08 2.1E-09 NV 1 0.15 NTV NTV NTV NV Benzo[a]pyrene 50-32-8 1.9E-02 5.4E-08 6.9E-08 4.3E-09 NV 1 0.15 3.0E-04 3.0E-04 2.0E-06 1.8E-04 2.3E-04 2.2E-03 NV 3E-03 Benzo[b]fluoranthene 205-99-2 2.1E-02 5.9E-08 7.6E-08 4.8E-09 NV 1 0.15 NTV NTV NTV NVBenzo(g,h,i)perylene 191-24-2 2.8E-02 7.9E-08 1.0E-07 6.4E-09 NV 1 0.15 3.0E-02 3.0E-02 2.6E-06 3.4E-06 NTV NV 6E-06 Benzo[k]fluoranthene 207-08-9 4.7E-02 1.3E-07 1.7E-07 1.1E-08 NV 1 0.15 NTV NTV NTV NV Chrysene 218-01-9 2.0E-02 5.7E-08 6.3E-08 4.6E-09 NV 1 0.13 NTV NTV NTV NV Dibenz[a,h]anthracene 53-70-3 6.0E-02 1.7E-07 2.2E-07 1.4E-08 NV 1 0.15 NTV NTV NTV NV Fluoranthene 206-44-0 5.4E-02 1.5E-07 2.0E-07 1.2E-08 NV 1 0.15 4.0E-02 4.0E-02 3.8E-06 4.9E-06 NTV NV 9E-06 Fluorene 86-73-7 3.8E-03 1.1E-08 1.4E-08 8.7E-10 NV 1 0.15 4.0E-02 4.0E-02 1.6E-01 2.7E-07 3.4E-07 5.4E-09 NV 6E-07 Indeno[1,2,3-cd]pyrene 193-39-5 1.1E-01 3.1E-07 4.0E-07 2.5E-08 NV 1 0.15 NTV NTV NTV NVPhenanthrene 85-01-8 2.3E-02 6.5E-08 8.3E-08 5.3E-09 NV 1 0.15 3.0E-02 3.0E-02 2.2E-06 2.8E-06 NTV NV 5E-06 Pyrene 129-00-0 5.8E-02 1.6E-07 2.1E-07 1.3E-08 NV 1 0.15 3.0E-02 3.0E-02 1.2E-01 5.5E-06 7.0E-06 1.1E-07 NV 1E-05 Methyl Ethyl Ketone (2-Butanon 78-93-3 2.2E-02 6.2E-08 V 6.1E-06 1 6.0E-01 6.0E-01 5.0E+00 1.0E-07 V 1.2E-06 1E-06 Acetone 67-64-1 7.6E-02 2.1E-07 V 2.0E-05 1 9.0E-01 9.0E-01 3.1E+01 2.4E-07 V 6.5E-07 9E-07 Cymene (p-Isopropyltoluene) 99-87-6 2.9E-02 0.0E+00 0.0E+00 V 5.9E-05 0 0 NTV NTV V NTV m,p-Xylenes 179601-23-1 7.6E-04 2.1E-09 0.0E+00 V 3.1E-07 1 0 2.0E-01 2.0E-01 1.0E-01 1.1E-08 0.0E+00 V 3.1E-06 3E-06

COPC CASRN
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, Non-Cancer Risk July 2022

Page 3 of 6 ends

Appendix D, Table 3
Intake and Risk Equations - Single Age
Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
Cancer Risk from Ingestion Parameter Value - Cancer Value - Non-Cancer Units CSF Chemical specific -- (mg/kg-day)-1
ELCR = Intakeing * CSF IUR Chemical specific -- (ug/m3
)
-1
Intake Age/chemical specific -- mg/kg-day
[EPC]soil * IR * ABSing * FI * EF * ED * C1 ECcan Age/chemical specific -- (ug/m3 )
BWx * ATlifetime ELCR Age/chemical specific -- unitless RfD -- Chemical specific mg/kg-day
RfC -- Chemical specific (mg/m3
)
DAD Age/chemical specific Age/chemical specific mg/kg-day Cancer Risk from Dermal Absorption DAEvent Age/chemical specific Age/chemical specific mg/cm2 -event
ECnc -- Age/chemical specific mg/m3
ELCR = DAD * CSF HQ -- Age/chemical specific unitless
[EPC]soil Chemical specific Chemical specific mg/kg
DAEvent * SA * EV * EF * ED [EPC]PART Appendix D, TABLE 4 Appendix D, TABLE 4 ug/m3 BWx * ATlifetime [EPC]VAPOR Appendix D, TABLE A-5 Appendix D, TABLE A-5 ug/m3 ABSing Chemical specific Chemical specific unitless
DAEvent = [EPC]soil * ABSd * AF * C1 ABSd Chemical specific Chemical specific unitless BW 80 80 kg
EF 250 250 day/year
ED 1 1 year
Cancer Risk from Inhalation AT -- 365 day
ATlifetime 25550 -- day
ELCRinh = ECcan * IUR
IR 330 330 mg/day
[EPC]PART * ETPart * EF * ED --- OR--- [EPC]VAPOR * ETVap * EF * ED FI 1 1 unitless 24 * ATlifetime C1 0.000001 0.000001 kg/mg
SA 3527 3527 cm2
AF 0.8 0.8 mg/cm2
EV 1 1 event/day
Noncancer Risk from Ingestion
ETPart 8 8 hours/day
Intakeing C2 0.001 0.001 mg/ug
RfD ETVap 8 8 hours/day
0 0.00E+00 0.00E+00 0
[EPC]soil * IR * ABSing * FI * EF * ED * C1
BW * AT
Noncancer Risk from Dermal Absorption
DAD
RfD
DAEvent * SA * EV * EF * ED
BW * AT
DAEvent = [EPC]soil * ABSd * AF * C1
Noncancer Risk from Inhalation
ECnc
RfC
ECnc = [EPC]PART * ETPart * EF * ED * C2 --- OR--- [EPC]VAPOR * ETVap * EF * ED * C2 24 * AT
DADderm =
ECcan (age group x) =
HQ =
Intakeing (age group x) =
DADderm(age group x) =
Intakeing =
HQ =
HQ =
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, Risk Equ-single July 2022

Page 4 of 6 ends

Appendix D, Table 4Exposure FactorsHuman Health Risk AssessmentBuilding 99/100 Exposure AreaParcel A, North CampusPLACE "X" IN THE APPROPRIATE YELLOW SHADED CELLS FOR THE APPROPRIATE RECEPTOR AND BASIS FOR CALCULATIONS

SCENARIO USED TO CALCULATE RISKS X FUTURE ON-SITE CONSTRUCTION WORKER

BASIS FOR CANCER CALCULATIONS X

BASIS FOR NON-CANCER CALCULATIONS X
RECEPTOR CONSTRUCTION WORKER (ADULT)Standard Parameters Body Weight BW kg 80 DTSC, 2019Exposure Frequency EF day/year 250 Site SpecificExposure Duration ED year 1 DTSC, 2019Non–carcinogenic Averaging Time AT day 365 Exposure duration expressed in days Carcinogenic Averaging Time ATlifetime day 25550 70 year lifetime Incidental Ingestion of Soil
Soil Ingestion Rate IR mg/day 330 DTSC, 2019Fraction Ingested FI unitless 1.0 AssumptionAge-Adjusted Soil Ingestion Rate IFSadj mg-yr/kg-day NA Dermal Exposure with Soil
Exposed Skin Surface Area SA cm2 3527 EPA, 2014
Soil Adherence Factor AF mg/cm2 0.8 DTSC, 2019
Fraction Dermal EV event/day 1.0 AssumptionAge-Adjusted Dermal Contact Factor DFSadj mg-yr/kg-day NA Particulate Inhalation
Exposure Time ETPart hours/day 8 Assumption
Vapor Inhalation
Exposure Time ETVap hours/day 8 Assumption
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, Exp July 2022

Page 5 of 6 ends

Appendix D, Table 5
Particulate to Outdoor Air EPC Calculations
Maximum Concentrations - Soil

FUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
EQUATIONS:

EPC[PARTICULATE]
= EPC[SOIL] x PARTICULATE[AIR] x 1E-06 [kg/mg]
where:

PARTICULATE[AIR] = (1/PEF * 1E+09 ug/kg) or Measured/Modelled and:

PEF (m3
/kg) = Q/C x [(3600 s/hr) / ((0.036 x (1-V ) x (U m /U t ) 3 x F(x) )]
PARAMETER/DEFINITION UNITS DEFAULT Source
PARTICULATE[Air] / Particulate concentration in air ug/m3 1000.00 Calculated or measured Measured or modeled PARTICULATE[AIR] ug/m3 Measured value PEF / Particulate emission factor m3
/kg Guidance value
PEF / Particulate emission factor m3
/kg 1.00E+06 Calculated here
Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source g/m2 -s per kg/m3 9.37 Calculated / USEPA, 2014 [a]
V / Fraction of vegetative cover unitless 0.5 Site-specific, estimated Um / mean annual windspeed m/s 4.69 Site-specific / USEPA, 2014 Ut
/ equivalent threshold value of wind speed at 7 m m/s 11.32 USEPA, 2014 F(x) / function dependant on Um/Ut derived using Cowherd et al. (1985) unitless 1.94E-01 Calculated / USEPA, 2014 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Los Angeles, CA [a] Area of Source: Specific to size of Exposure Area EPC Soil EPC Particulate
(mg/kg) (ug/m3
)
7440-39-3 Barium 394 3.9E-01
7440-41-7 Beryllium 1.38 1.4E-03
7440-50-8 Copper 28.8 2.9E-02
7440-66-6 Zinc 78.3 7.8E-02
11097-69-1 Aroclor-1254 0.12 1.2E-04
72-54-8 DDD 0.031 3.1E-05
72-55-9 DDE 1 1.0E-03
50-29-3 DDT 0.23 2.3E-04
12789-03-6 Chlordane 0.033 3.3E-05
1024-57-3 Heptachlor Epoxide 0.022 2.2E-05
83-32-9 Acenaphthene 0.0061 6.1E-06
208-96-8 Acenaphthylene 0.011 1.1E-05
120-12-7 Anthracene 0.0082 8.2E-06
56-55-3 Benz[a]anthracene 0.0092 9.2E-06
50-32-8 Benzo[a]pyrene 0.019 1.9E-05
205-99-2 Benzo[b]fluoranthene 0.021 2.1E-05
191-24-2 Benzo(g,h,i)perylene 0.028 2.8E-05
207-08-9 Benzo[k]fluoranthene 0.047 4.7E-05
218-01-9 Chrysene 0.02 2.0E-05
53-70-3 Dibenz[a,h]anthracene 0.06 6.0E-05
206-44-0 Fluoranthene 0.054 5.4E-05
86-73-7 Fluorene 0.0038 3.8E-06
193-39-5 Indeno[1,2,3-cd]pyrene 0.11 1.1E-04
85-01-8 Phenanthrene 0.023 2.3E-05
129-00-0 Pyrene 0.058 5.8E-05
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.022 V
67-64-1 Acetone 0.076 V
99-87-6 Cymene (p-Isopropyltoluene) 0.029 V
179601-23-1 m,p-Xylenes 0.00076 V

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, PEF July 2022

Page 6 of 6 ends

Appendix D, Table 6
Vapor to Outdoor Air EPC Calculations
Maximum Concentrations - Soil

FUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
EQUATIONS:

EPC[VAPOR] = EPC[SOIL] x 1/VF x 1000 ug/mg
where:

VF (m3
/kg) = Q/C x (3.14 x DA x T)1/2 x 10-4(m2/cm2) / (2 x Pb x DA) x (1/Fd) and:

DA = [(a
10/3 Di H' +w10/3 Dw)/n2
] / PbKd +w + Oa H'
ARAMETER/DEFINITION UNITS DEFAULT Source
VF / volatilization factor m3
/kg Calculated
DA / apparent diffusivity cm2
/s Calculated
g/m2
-s per kg/m3 9.37 USEPA, 2014 [a]
T / exposure interval s 3.15E+07 FUTURE ON-SITE CONSTRUCTION WORKER b / dry soil bulk density g/cm3 1.66 USEPA, 2014
a / air-filled soil porosity Lair/Lsoil 0.321 USEPA, 2014 n / total soil porosity Lpore/Lsoil 0.375 USEPA, 2014
w / water-filled soil porosity Lwater/Lsoil 0.054 USEPA, 2014 s / soil particle density g/cm3 2.65 USEPA, 1996
Di
/ diffusivity in air cm2
/s chemical-specific
H' / Henry's Law constant dimensionless chemical-specific Dw / diffusivity in water cm2
/s chemical-specific
Kd / soil-water partition coefficient (Koc x foc) organics cm3 /g chemical-specific
Koc / soil organic carbon partition coefficient cm3
/g chemical-specific
foc / fraction organic carbon in soil g/g 0.006 Default Fd / Disperson correlation factor Unitless 0.185 Default, USEPA 2002 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Los Angeles, CA [a] Area of Source: Specific to size of Exposure Area Volatile Di H' Dw Kd Koc DA VF EPC Soil EPC Vapor
(Y/N) (cm2
/s) (unitless) (cm2/s) (cm3/g) (cm3/g) (cm2/s) (m3/kg) (mg/kg) (ug/m3) 7440-39-3 Barium N NV
7440-41-7 Beryllium N NV
7440-50-8 Copper N NV
7440-66-6 Zinc N NV
11097-69-1 Aroclor-1254 N 4.01E-02 1.16E-02 4.68E-06 7.83E+02 1.31E+05 NV 72-54-8 DDD N 4.06E-02 2.70E-04 4.74E-06 7.05E+02 1.18E+05 NV 72-55-9 DDE N 4.08E-02 1.70E-03 4.76E-06 7.05E+02 1.18E+05 NV 50-29-3 DDT N 3.79E-02 3.40E-04 4.43E-06 1.01E+03 1.69E+05 NV 12789-03-6 Chlordane N 3.44E-02 1.99E-03 4.02E-06 2.03E+02 3.38E+04 NV 1024-57-3 Heptachlor Epoxide N 3.56E-02 8.59E-04 4.16E-06 6.07E+01 1.01E+04 NV 83-32-9 Acenaphthene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 208-96-8 Acenaphthylene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 120-12-7 Anthracene N 3.90E-02 2.27E-03 7.85E-06 9.82E+01 1.64E+04 NV 56-55-3 Benz[a]anthracene N 5.09E-02 4.91E-04 5.94E-06 1.06E+03 1.77E+05 NV 50-32-8 Benzo[a]pyrene N 4.76E-02 1.87E-05 5.56E-06 3.52E+03 5.87E+05 NV 205-99-2 Benzo[b]fluoranthene N 4.76E-02 2.69E-05 5.56E-06 3.60E+03 5.99E+05 NV 191-24-2 Benzo(g,h,i)perylene N 5.28E-02 9.65E-08 6.17E-06 1.35E+00 2.25E+02 NV 207-08-9 Benzo[k]fluoranthene N 4.76E-02 2.39E-05 5.56E-06 3.52E+03 5.87E+05 NV 218-01-9 Chrysene N 2.61E-02 2.14E-04 6.75E-06 1.08E+03 1.81E+05 NV 53-70-3 Dibenz[a,h]anthracene N 4.46E-02 5.76E-06 5.21E-06 1.15E+04 1.91E+06 NV 206-44-0 Fluoranthene N 2.76E-02 3.62E-04 7.18E-06 3.33E+02 5.55E+04 NV 86-73-7 Fluorene N 4.40E-02 3.93E-03 7.89E-06 5.50E+01 9.16E+03 NV 193-39-5 Indeno[1,2,3-cd]pyrene N 4.48E-02 6.56E-05 5.23E-06 2.08E+04 3.47E+06 NV 85-01-8 Phenanthrene N 2.08E-02 5.81E-12 5.19E-06 5.56E+01 9.27E+03 NV 129-00-0 Pyrene N 2.78E-02 4.87E-04 7.25E-06 3.26E+02 5.43E+04 NV 78-93-3 Methyl Ethyl Ketone (2-Butanone) Y 9.14E-02 2.33E-03 1.02E-05 2.71E-02 4.51E+00 3.4E-04 819 0.022 2.7E-02 67-64-1 Acetone Y 1.06E-01 1.43E-03 1.15E-05 1.42E-02 2.36E+00 3.1E-04 858 0.076 8.9E-02 99-87-6 Cymene (p-Isopropyltoluene) Y 0.057249 4.66E-01 6.73e-06 2.02E-02 3.36E+00 1.8E-02 113 0.029 2.6E-01 179601-23-1 m,p-Xylenes Y 8.47E-02 2.12E-01 9.90E-06 2.30E+00 3.83E+02 7.3E-04 560 0.00076 1.4E-03 Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_construction_B99_max_mtr.xlsx, VF July 2022 Calculation of Q/C During Construction
Building 99/100 Exposure Area
Sources: EPA, 1996. Soil Screening Guidance: Technical Background Document. May.

EPA, 2001. Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites. Peer Review Draft. March.

Q/C = A x exp [(ln Asite - B)2 / C]
Where:

Q/C = Inverse of mean concentration at center of source (g/m2-s per kg/m2); A, B, C = Constants based on air dispersion modeling for Los Angeles, CA, from EPA 2001;Asite = Areal extent of site or contamination (acres); AB C Asite Q/C

2.4538 17.566 189.0426 5.2 9.37
Building 99/100 Exposure Area
Landscaper/Utility Worker

Page 1 of 6 ends

Appendix D, Table 1Cancer Risk Calculations - Single AgeMaximum Concentrations - SoilFUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT Exposure Routes Evaluated ELCR (Total)
Human Health Risk Assessment Incidental Ingestion Yes 1E-07 Building 99/100 Exposure Area Dermal Contact Yes 9E-08Parcel A, North Campus Particulate Inhalation Yes 2E-10 Ambient Vapor Inhalation Yes 0E+00
2E-07
NC - not carcinogenic by this exposure route NV - not volatile EC - exposure concentration CSF - cancer slope factor ELCR - excess lifetime cancer risk COPC - chemical of potential concernNTV - no toxicity value available DAD - dermally absorbed dose ABS - absorption factor UR - cancer unit risk EPC - exposure point concentration Intake Calculations Absorption Factors Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd CSForal CSFdermal IUR ELCRingestion ELCRdermal ELCRparticulate ELCRvapor ELCRtotal (mg/kg) (mg/kg/day) (mg/kg/day) (ug/m3) (ug/m3) (unitless) (unitless) (mg/kg/day)-1 (mg/kg/day)-1 (ug/m3)-1 Barium 7440-39-3 3.9E+02 NC NC NC NV NC NC NC NC NC NV
Beryllium 7440-41-7 1.4E+00 NC NC 6.8E-08 NV NC NC NC NC 2.4E-03 2E-10 NV 2E-10 Copper 7440-50-8 2.9E+01 NC NC NC NV NC NC NC NC NC NV
Zinc 7440-66-6 7.8E+01 NC NC NC NV NC NC NC NC NC NV
Aroclor-1254 11097-69-1 1.2E-01 1.5E-08 1.6E-08 5.9E-09 NV 1 0.15 2.0E+00 2.0E+00 5.7E-04 3E-08 3E-08 3E-12 NV 6E-08 DDD 72-54-8 3.1E-02 3.8E-09 1.3E-09 1.5E-09 NV 1 0.05 2.4E-01 2.4E-01 6.9E-05 9E-10 3E-10 1E-13 NV 1E-09DDE 72-55-9 1.0E+00 1.2E-07 4.3E-08 4.9E-08 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 4E-08 1E-08 5E-12 NV 6E-08 DDT 50-29-3 2.3E-01 2.8E-08 9.9E-09 1.1E-08 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 1E-08 3E-09 1E-12 NV 1E-08Chlordane 12789-03-6 3.3E-02 4.0E-09 1.4E-09 1.6E-09 NV 1 0.05 3.5E-01 3.5E-01 1.0E-04 1.4E-09 5.0E-10 1.6E-13 NV 1.9E-09Heptachlor Epoxide 1024-57-3 2.2E-02 2.7E-09 9.5E-10 1.1E-09 NV 1 0.05 9.1E+00 9.1E+00 2.6E-03 2.4E-08 8.6E-09 2.8E-12 NV 3.3E-08Acenaphthene 83-32-9 6.1E-03 NC NC NC NV NC NC NC 0.0E+00 NC NVAcenaphthylene 208-96-8 1.1E-02 NC NC NC NV NC NC NC NC NC NV Anthracene 120-12-7 8.2E-03 NC NC NC NV NC NC NC NC NC NV Benz[a]anthracene 56-55-3 9.2E-03 1.1E-09 1.2E-09 4.5E-10 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 1.1E-10 1.2E-10 5.0E-14 NV 2.3E-10Benzo[a]pyrene 50-32-8 1.9E-02 2.3E-09 2.5E-09 9.4E-10 NV 1 0.15 1.0E+00 1.0E+00 1.1E-03 2.3E-09 2.5E-09 1.0E-12 NV 4.8E-09Benzo[b]fluoranthene 205-99-2 2.1E-02 2.6E-09 2.7E-09 1.0E-09 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 2.6E-10 2.7E-10 1.1E-13 NV 5.3E-10 Benzo(g,h,i)perylene 191-24-2 2.8E-02 NC NC NC NV NC NC NC NC NC NV Benzo[k]fluoranthene 207-08-9 4.7E-02 5.7E-09 6.1E-09 2.3E-09 NV 1 0.15 1.0E-02 1.0E-02 1.1E-04 5.7E-11 6.1E-11 2.5E-13 NV 1.2E-10 Chrysene 218-01-9 2.0E-02 2.4E-09 2.6E-09 9.9E-10 NV 1 0.15 1.0E-03 1.0E-03 1.1E-05 2.4E-12 2.6E-12 1.1E-14 NV 5.0E-12Dibenz[a,h]anthracene 53-70-3 6.0E-02 7.3E-09 7.8E-09 3.0E-09 NV 1 0.15 4.1E+00 4.1E+00 1.2E-03 3.0E-08 3.2E-08 3.5E-12 NV 6.2E-08 Fluoranthene 206-44-0 5.4E-02 NC NC NC NV NC NC NC NC NC NV Fluorene 86-73-7 3.8E-03 NC NC NC NV NC NC NC NC NC NV
Indeno[1,2,3-cd]pyrene 193-39-5 1.1E-01 1.3E-08 1.4E-08 5.4E-09 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 1.3E-09 1.4E-09 6.0E-13 NV 2.8E-09 Phenanthrene 85-01-8 2.3E-02 NC NC NC NV NC NC NC NC NC NV Pyrene 129-00-0 5.8E-02 NC NC NC NV NC NC NC NC NC NV
Methyl Ethyl Ketone (2-Butanone) 78-93-3 2.2E-02 NC NC NC NC NC NC NC NC NC Acetone 67-64-1 7.6E-02 NC NC NC NC NC NC NC NC NC
Cymene (p-Isopropyltoluene) 99-87-6 2.9E-02 NC NC NC NC NC NC NC NC NC m,p-Xylenes 179601-23-1 7.6E-04 NC NC NC NC NC NC NC NC NC

CASRNCOPC
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_landscaper_B99-max.xlsx, Cancer Risk-single July 2022

Page 2 of 6 ends

Appendix D, Table 2Non-Cancer Risk CalculationsMaximum Concentrations - SoilFUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Exposure Routes Evaluated HI (Total)
Human Health Risk Assessment Incidental Ingestion Yes 8E-03Building 99/100 Exposure Area Dermal Contact Yes 3E-02 Parcel A, North Campus Particulate Inhalation Yes 1E-04 Ambient Vapor Inhalation Yes 4E-07

0.04 NV - not volatile EC - exposure concentration RfD - reference dose HI - hazard index EPC - exposure point concentration (if blank, then COPC was not detected) V - volatile DAD - dermally absorbed dose RfC - reference concentration HQ - hazard quotient COPC - chemical of potential concern NTV - no toxicity value available ABS - absorption factor Intake Calculations Absorption Factors Non-Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd RfDoral RfDdermal RfC HQingestion HQdermal HQparticulate HQvapor HQtotal (mg/kg) (mg/kg/day) (mg/kg/day) (mg/m3) (mg/m3) (unitless) (unitless) (mg/kg/day) (mg/kg/day) (mg/m3) Barium 7440-39-3 3.9E+02 1.3E-04 9.5E-06 5.4E-08 NV 1 0.01 2.0E-01 1.4E-02 5.0E-04 7E-04 7E-04 1E-04 NV 1E-03 Beryllium 7440-41-7 1.4E+00 4.7E-07 3.3E-08 1.9E-10 NV 1 0.01 2.0E-04 1.4E-06 7.0E-06 2E-03 2E-02 3E-05 NV 3E-02Copper 7440-50-8 2.9E+01 9.9E-06 7.0E-07 4.0E-09 NV 1 0.01 4.0E-02 4.0E-02 2E-04 2E-05 NTV NV 3E-04Zinc 7440-66-6 7.8E+01 2.7E-05 1.9E-06 1.1E-08 NV 1 0.01 3.0E-01 3.0E-01 9E-05 6E-06 NTV NV 1E-04Aroclor-1254 11097-69-1 1.2E-01 4.1E-08 4.3E-08 1.7E-11 NV 1 0.15 2.0E-05 2.0E-05 8.0E-05 2E-03 2E-03 2E-07 NV 4E-03 DDD 72-54-8 3.1E-02 1.1E-08 3.7E-09 4.3E-12 NV 1 0.05 3.0E-05 3.0E-05 4E-04 1E-04 NTV NV 5E-04 DDE 72-55-9 1.0E+00 3.4E-07 1.2E-07 1.4E-10 NV 1 0.05 3.0E-04 3.0E-04 1.2E-03 1E-03 4E-04 1E-07 NV 2E-03 DDT 50-29-3 2.3E-01 7.9E-08 2.8E-08 3.2E-11 NV 1 0.05 5.0E-04 5.0E-04 2E-04 6E-05 NTV NV 2E-04 Chlordane 12789-03-6 3.3E-02 1.1E-08 4.0E-09 4.6E-12 NV 1 0.05 5.0E-04 5.0E-04 7.0E-04 2.3E-05 8.0E-06 6.5E-09 NV 3.1E-05 Heptachlor Epoxide 1024-57-3 2.2E-02 7.5E-09 2.7E-09 3.0E-12 NV 1 0.05 1.3E-05 1.3E-05 5.2E-05 5.8E-04 2.0E-04 5.8E-08 NV 7.8E-04 Acenaphthene 83-32-9 6.1E-03 2.1E-09 2.2E-09 8.4E-13 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 3.5E-08 3.7E-08 3.5E-12 NV 7.2E-08 Acenaphthylene 208-96-8 1.1E-02 3.8E-09 4.0E-09 1.5E-12 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 6.3E-08 6.6E-08 6.3E-12 NV 1.3E-07 Anthracene 120-12-7 8.2E-03 2.8E-09 3.0E-09 1.1E-12 NV 1 0.15 3.0E-01 3.0E-01 1.2E+00 9.4E-09 9.9E-09 9.4E-13 NV 1.9E-08Benz[a]anthracene 56-55-3 9.2E-03 3.2E-09 3.3E-09 1.3E-12 NV 1 0.15 NTV NTV NTV NV Benzo[a]pyrene 50-32-8 1.9E-02 6.5E-09 6.9E-09 2.6E-12 NV 1 0.15 3.0E-04 3.0E-04 2.0E-06 2.2E-05 2.3E-05 1.3E-06 NV 4.6E-05 Benzo[b]fluoranthene 205-99-2 2.1E-02 7.2E-09 7.6E-09 2.9E-12 NV 1 0.15 NTV NTV NTV NV Benzo(g,h,i)perylene 191-24-2 2.8E-02 9.6E-09 1.0E-08 3.9E-12 NV 1 0.15 3.0E-02 3.0E-02 3.2E-07 3.4E-07 NTV NV 6.6E-07 Benzo[k]fluoranthene 207-08-9 4.7E-02 1.6E-08 1.7E-08 6.5E-12 NV 1 0.15 NTV NTV NTV NV Chrysene 218-01-9 2.0E-02 6.8E-09 7.2E-09 2.8E-12 NV 1 0.15 NTV NTV NTV NV Dibenz[a,h]anthracene 53-70-3 6.0E-02 2.1E-08 2.2E-08 8.3E-12 NV 1 0.15 NTV NTV NTV NV Fluoranthene 206-44-0 5.4E-02 1.8E-08 2.0E-08 7.5E-12 NV 1 0.15 4.0E-02 4.0E-02 4.6E-07 4.9E-07 NTV NV 9.5E-07 Fluorene 86-73-7 3.8E-03 1.3E-09 1.4E-09 5.2E-13 NV 1 0.15 4.0E-02 4.0E-02 1.6E-01 3.3E-08 3.4E-08 3.3E-12 NV 6.7E-08 Indeno[1,2,3-cd]pyrene 193-39-5 1.1E-01 3.8E-08 4.0E-08 1.5E-11 NV 1 0.15 NTV NTV NTV NV Phenanthrene 85-01-8 2.3E-02 7.9E-09 8.3E-09 3.2E-12 NV 1 0.15 3.0E-02 3.0E-02 2.6E-07 2.8E-07 NTV NV 5.4E-07 Pyrene 129-00-0 5.8E-02 2.0E-08 2.1E-08 8.0E-12 NV 1 0.15 3.0E-02 3.0E-02 1.2E-01 6.6E-07 7.0E-07 6.7E-11 NV 1.4E-06 Methyl Ethyl Ketone (2-Butanon 78-93-3 2.2E-02 7.5E-09 V 5.4E-07 1 6.0E-01 6.0E-01 5.0E+00 1.3E-08 V 1.1E-07 1.2E-07 Acetone 67-64-1 7.6E-02 2.6E-08 V 1.8E-06 1 9.0E-01 9.0E-01 3.1E+01 2.9E-08 V 5.8E-08 8.7E-08 Cymene (p-Isopropyltoluene) 99-87-6 2.9E-02 9.9E-09 V 5.2E-06 1 NTV NTV V NTVm,p-Xylenes 179601-23-1 7.6E-04 2.6E-10 V 2.7E-08 1 2.0E-01 2.0E-01 1.0E-01 1.3E-09 V 2.7E-07 2.8E-07

Page 3 of 6 ends

Appendix D, Table 3
Intake and Risk Equations - Single Age
Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
Cancer Risk from Ingestion Parameter Value - Cancer Value - Non-Cancer Units CSF Chemical specific -- (mg/kg-day)-1
ELCR = Intakeing * CSF IUR Chemical specific -- (ug/m3
)
-1
Intake Age/chemical specific -- mg/kg-day
[EPC]soil * IR * ABSing * FI * EF * ED * C1 ECcan Age/chemical specific -- (ug/m3 )
BWx * ATlifetime ELCR Age/chemical specific -- unitless RfD -- Chemical specific mg/kg-day
RfC -- Chemical specific (mg/m3
)
DAD Age/chemical specific Age/chemical specific mg/kg-day Cancer Risk from Dermal Absorption DAEvent Age/chemical specific Age/chemical specific mg/cm2 -event
ECnc -- Age/chemical specific mg/m3
ELCR = DAD * CSF HQ -- Age/chemical specific unitless
[EPC]soil Chemical specific Chemical specific mg/kg
DAEvent * SA * EV * EF * ED [EPC]PART Appendix D, TABLE 4 Appendix D, TABLE 4 ug/m3 BWx * ATlifetime [EPC]VAPOR Appendix D, TABLE A-5 Appendix D, TABLE A-5 ug/m3 ABSing Chemical specific Chemical specific unitless
DAEvent = [EPC]soil * ABSd * AF * C1 ABSd Chemical specific Chemical specific unitless BW 80 80 kg
EF 100 100 day/year
ED 25 25 year
Cancer Risk from Inhalation AT -- 9125 day
ATlifetime 25550 -- day
ELCRinh = ECcan * IUR
IR 100 100 mg/day
[EPC]PART * ETPart * EF * ED --- OR--- [EPC]VAPOR * ETVap * EF * ED FI 1 1 unitless 24 * ATlifetime C1 0.000001 0.000001 kg/mg
SA 3527 3527 cm2
AF 0.2 0.2 mg/cm2
EV 1 1 event/day
Noncancer Risk from Ingestion
ETPart 8 8 hours/day
Intakeing C2 0.001 0.001 mg/ug
RfD ETVap 8 8 hours/day
0 0.00E+00 0.00E+00 0
[EPC]soil * IR * ABSing * FI * EF * ED * C1
BW * AT
Noncancer Risk from Dermal Absorption
DAD
RfD
DAEvent * SA * EV * EF * ED
BW * AT
DAEvent = [EPC]soil * ABSd * AF * C1
Noncancer Risk from Inhalation
ECnc
RfC
ECnc = [EPC]PART * ETPart * EF * ED * C2 --- OR--- [EPC]VAPOR * ETVap * EF * ED * C2 24 * AT
DADderm =
ECcan (age group x) =
HQ =
Intakeing (age group x) =
DADderm(age group x) =
Intakeing =
HQ =
HQ =
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_landscaper_B99-max.xlsx, Risk Equ-single July 2022

Page 4 of 6 ends

SCENARIO USED TO CALCULATE RISKS X FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER

BASIS FOR CANCER CALCULATIONS X

BASIS FOR NON-CANCER CALCULATIONS X
RECEPTOR LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT)Standard Parameters Body Weight BW kg 80 DTSC, 2019Exposure Frequency EF day/year 100 Site SpecificExposure Duration ED year 25 DTSC, 2019Non–carcinogenic Averaging Time AT day 9125 Exposure duration expressed in days Carcinogenic Averaging Time ATlifetime day 25550 70 year lifetime Incidental Ingestion of Soil
Soil Ingestion Rate IR mg/day 100 DTSC, 2019Fraction Ingested FI unitless 1.0 AssumptionAge-Adjusted Soil Ingestion Rate IFSadj mg-yr/kg-day NA Dermal Exposure with Soil
Exposed Skin Surface Area SA cm2 3527 EPA, 2014
Soil Adherence Factor AF mg/cm2 0.2 DTSC, 2019
Fraction Dermal EV event/day 1.0 AssumptionAge-Adjusted Dermal Contact Factor DFSadj mg-yr/kg-day NA Particulate Inhalation
Exposure Time ETPart hours/day 8 Assumption
Vapor Inhalation
Exposure Time ETVap hours/day 8 Assumption
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_landscaper_B99-max.xlsx, Exp July 2022

Page 5 of 6 ends

Appendix D, Table 5
Particulate to Outdoor Air EPC Calculations
Maximum Concentrations - Soil

FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
EQUATIONS:

EPC[PARTICULATE]
= EPC[SOIL] x PARTICULATE[AIR] x 1E-06 [kg/mg]
where:

PARTICULATE[AIR] = (1/PEF * 1E+09 ug/kg) or Measured/Modelled and:

PEF (m3
/kg) = Q/C x [(3600 s/hr) / ((0.036 x (1-V ) x (U m /U t ) 3 x F(x) )]
PARAMETER/DEFINITION UNITS DEFAULT Source
PARTICULATE[Air] / Particulate concentration in air ug/m3 1.51 Calculated or measured Measured or modeled PARTICULATE[AIR] ug/m3 Measured value PEF / Particulate emission factor m3
/kg Guidance value
PEF / Particulate emission factor m3
/kg 6.62E+08 Calculated here
Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source g/m2 -s per kg/m3 45.66 Calculated / USEPA, 2014 [a]
V / Fraction of vegetative cover unitless 0.5 Site-specific, estimated Um / mean annual windspeed m/s 4.69 Site-specific / USEPA, 2014 Ut
/ equivalent threshold value of wind speed at 7 m m/s 11.32 USEPA, 2014 F(x) / function dependant on Um/Ut derived using Cowherd et al. (1985) unitless 1.94E-01 Calculated / USEPA, 2014 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Los Angeles, CA [a] Area of Source: Specific to size of Exposure Area EPC Soil EPC Particulate
(mg/kg) (ug/m3
)
7440-39-3 Barium 394 6.0E-04
7440-41-7 Beryllium 1.38 2.1E-06
7440-50-8 Copper 28.8 4.4E-05
7440-66-6 Zinc 78.3 1.2E-04
11097-69-1 Aroclor-1254 0.12 1.8E-07
72-54-8 DDD 0.031 4.7E-08
72-55-9 DDE 1 1.5E-06
50-29-3 DDT 0.23 3.5E-07
12789-03-6 Chlordane 0.033 5.0E-08
1024-57-3 Heptachlor Epoxide 0.022 3.3E-08
83-32-9 Acenaphthene 0.0061 9.2E-09
208-96-8 Acenaphthylene 0.011 1.7E-08
120-12-7 Anthracene 0.0082 1.2E-08
56-55-3 Benz[a]anthracene 0.0092 1.4E-08
50-32-8 Benzo[a]pyrene 0.019 2.9E-08
205-99-2 Benzo[b]fluoranthene 0.021 3.2E-08
191-24-2 Benzo(g,h,i)perylene 0.028 4.2E-08
207-08-9 Benzo[k]fluoranthene 0.047 7.1E-08
218-01-9 Chrysene 0.02 3.0E-08
53-70-3 Dibenz[a,h]anthracene 0.06 9.1E-08
206-44-0 Fluoranthene 0.054 8.2E-08
86-73-7 Fluorene 0.0038 5.7E-09
193-39-5 Indeno[1,2,3-cd]pyrene 0.11 1.7E-07
85-01-8 Phenanthrene 0.023 3.5E-08
129-00-0 Pyrene 0.058 8.8E-08
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.022 V
67-64-1 Acetone 0.076 V
99-87-6 Cymene (p-Isopropyltoluene) 0.029 V
179601-23-1 m,p-Xylenes 0.00076 V

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_landscaper_B99-max.xlsx, PEF July 2022

Page 6 of 6 ends

Appendix D, Table 6
Vapor to Outdoor Air EPC Calculations
Maximum Concentrations - Soil

FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Human Health Risk Assessment
Building 99/100 Exposure Area
Parcel A, North Campus
EQUATIONS:

EPC[VAPOR] = EPC[SOIL] x 1/VF x 1000 ug/mg
where:

VF (m3
/kg) = Q/C x (3.14 x DA x T)1/2 x 10-4(m2/cm2) / (2 x Pb x DA) and:

DA = [(a
10/3 Di H' +w10/3 Dw)/n2
] / PbKd +w + Oa H'
ARAMETER/DEFINITION UNITS DEFAULT Source
VF / volatilization factor m3
/kg Calculated
DA / apparent diffusivity cm2
/s Calculated
g/m2
-s per kg/m3 45.66 USEPA, 2014 [a]
T / exposure interval s 7.88E+08 FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER b / dry soil bulk density g/cm3 1.66 USEPA, 2014
a / air-filled soil porosity Lair/Lsoil 0.321 USEPA, 2014 n / total soil porosity Lpore/Lsoil 0.375 USEPA, 2014
w / water-filled soil porosity Lwater/Lsoil 0.054 USEPA, 2014 s / soil particle density g/cm3 2.65 USEPA, 1996
Di
/ diffusivity in air cm2
/s chemical-specific
H' / Henry's Law constant dimensionless chemical-specific Dw / diffusivity in water cm2
/s chemical-specific
Kd / soil-water partition coefficient (Koc x foc) organics cm3 /g chemical-specific
Koc / soil organic carbon partition coefficient cm3
/g chemical-specific
foc / fraction organic carbon in soil g/g 0.006 Default USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Los Angeles, CA [a] Area of Source: Specific to size of Exposure Area Volatile Di H' Dw Kd Koc DA VF EPC Soil EPC Vapor
(Y/N) (cm2
/s) (unitless) (cm2/s) (cm3/g) (cm3/g) (cm2/s) (m3/kg) (mg/kg) (ug/m3) 7440-39-3 Barium N NV
7440-41-7 Beryllium N NV
7440-50-8 Copper N NV
7440-66-6 Zinc N NV
11097-69-1 Aroclor-1254 N 4.01E-02 1.16E-02 4.68E-06 7.83E+02 1.31E+05 NV 72-54-8 DDD N 4.06E-02 2.70E-04 4.74E-06 7.05E+02 1.18E+05 NV 72-55-9 DDE N 4.08E-02 1.70E-03 4.76E-06 7.05E+02 1.18E+05 NV 50-29-3 DDT N 3.79E-02 3.40E-04 4.43E-06 1.01E+03 1.69E+05 NV 12789-03-6 Chlordane N 3.44E-02 1.99E-03 4.02E-06 2.03E+02 3.38E+04 NV 1024-57-3 Heptachlor Epoxide N 3.56E-02 8.59E-04 4.16E-06 6.07E+01 1.01E+04 NV 83-32-9 Acenaphthene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 208-96-8 Acenaphthylene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 120-12-7 Anthracene N 3.90E-02 2.27E-03 7.85E-06 9.82E+01 1.64E+04 NV 56-55-3 Benz[a]anthracene N 5.09E-02 4.91E-04 5.94E-06 1.06E+03 1.77E+05 NV 50-32-8 Benzo[a]pyrene N 4.76E-02 1.87E-05 5.56E-06 3.52E+03 5.87E+05 NV 205-99-2 Benzo[b]fluoranthene N 4.76E-02 2.69E-05 5.56E-06 3.60E+03 5.99E+05 NV 191-24-2 Benzo(g,h,i)perylene N 5.28E-02 9.65E-08 6.17E-06 1.35E+00 2.25E+02 NV 207-08-9 Benzo[k]fluoranthene N 4.76E-02 2.39E-05 5.56E-06 3.52E+03 5.87E+05 NV 218-01-9 Chrysene N 2.61E-02 2.14E-04 6.75E-06 1.08E+03 1.81E+05 NV 53-70-3 Dibenz[a,h]anthracene N 4.46E-02 5.76E-06 5.21E-06 1.15E+04 1.91E+06 NV 206-44-0 Fluoranthene N 2.76E-02 3.62E-04 7.18E-06 3.33E+02 5.55E+04 NV 86-73-7 Fluorene N 4.40E-02 3.93E-03 7.89E-06 5.50E+01 9.16E+03 NV 193-39-5 Indeno[1,2,3-cd]pyrene N 4.48E-02 6.56E-05 5.23E-06 2.08E+04 3.47E+06 NV 85-01-8 Phenanthrene N 2.08E-02 5.81E-12 5.19E-06 5.56E+01 9.27E+03 NV 129-00-0 Pyrene N 2.78E-02 4.87E-04 7.25E-06 3.26E+02 5.43E+04 NV 78-93-3 Methyl Ethyl Ketone (2-Butanone) Y 9.14E-02 2.33E-03 1.02E-05 2.71E-02 4.51E+00 3.4E-04 3691 0.022 6.0E-03 67-64-1 Acetone Y 1.06E-01 1.43E-03 1.15E-05 1.42E-02 2.36E+00 3.1E-04 3868 0.076 2.0E-02 99-87-6 Cymene (p-Isopropyltoluene) Y 0.057249 4.66E-01 6.73e-06 2.02E-02 3.36E+00 1.8E-02 508 0.029 5.7E-02 179601-23-1 m,p-Xylenes Y 8.47E-02 2.12E-01 9.90E-06 2.30E+00 3.83E+02 7.3E-04 2525 0.00076 3.0E-04 Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0608_Soil - Template-EPA-non-M-V11_landscaper_B99-max.xlsx, VF July 2022 Calculation of Respirable Particulate Emission Factor (PEF) Building 99/100 Exposure Area
Sources: EPA, 1996. Soil Screening Guidance: Technical Background Document. May.

EPA, 2001. Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites. Peer Review Draft. March.

Assumptions: The soil surface has an unlimited erosion potential.

The surface soil is comprised of fine sand.Highly erodible soils do not retain moisture.The ground surface is comprised only of soil containing 50 percent vegetative cover.No portion of the property is paved or contains structures (e.g., surfaces with limited erosion potential.) PEF = Q/C x [3,600 s/hr / (0.036 x (1-V) x (U
m/Ut
)
3 x F(x))]
Q/C = A x exp [(ln Asite - B)2 / C]
Where:

PEF = Particluate emission factor of annual average PM10 impacted fugitive dust emissions (m3/kg); PM10 = Respirable fraction, particles less than 10 um in diameter; Q/C = Inverse of mean concentration at center of source (g/m2-s per kg/m2); A, B, C = Constants based on air dispersion modeling for Los Angeles, CA, from EPA, 2001;Asite = Areal extent of site or contamination (acres);

0.036 = Respirable fraction (g/m2-hr);
V = Fraction of impacted surface with vegetative cover (unitless);U m = Mean annual wind speed (m/s), from EPA 1996, 2001;
Ut = Equivalent threshold value of windspeed at 7 m (m/s), from EPA, 1996, 2001; F(x) = Function dependent on U
m/Ut derived using Cowherd et al. 1985 (unitless), from EPA, 1996, 2001.

AB C
Asite Q/C V
U
m
Ut F(x) PEF

11.911 18.439 209.7845 5.2 45.66 0.5 4.69 11.32 0.194 6.62E+08 Building 29 Exposure Area
Landscaper/Utility Worker

Page 1 of 6 ends

Appendix D, Table 1Cancer Risk Calculations - Single AgeMaximum/95%UCL Concentrations - SoilFUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT Exposure Routes Evaluated ELCR (Total)
Human Health Risk Assessment Incidental Ingestion Yes 1E-05 Building 29 Area Dermal Contact Yes 2E-06Parcel A, North Campus Particulate Inhalation Yes 2E-09 Ambient Vapor Inhalation Yes 3E-07
1E-05
NC - not carcinogenic by this exposure route NV - not volatile EC - exposure concentration CSF - cancer slope factor ELCR - excess lifetime cancer risk COPC - chemical of potential concernNTV - no toxicity value available DAD - dermally absorbed dose ABS - absorption factor UR - cancer unit risk EPC - exposure point concentration Intake Calculations Absorption Factors Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd CSForal CSFdermal IUR ELCRingestion ELCRdermal ELCRparticulate ELCRvapor ELCRtotal (mg/kg) (mg/kg/day) (mg/kg/day) (ug/m3) (ug/m3) (unitless) (unitless) (mg/kg/day)-1 (mg/kg/day)-1 (ug/m3)-1 Arsenic 7440-38-2 8.6E+00 1.0E-06 2.2E-07 4.6E-07 NV 1 0.03 9.5E+00 9.5E+00 4.3E-03 1E-05 2E-06 2E-09 NV 1E-05 Barium 7440-39-3 3.7E+02 NC NC NC NV NC NC NC NC NC NV
Copper 7440-50-8 4.2E+01 NC NC NC NV NC NC NC NC NC NV
Zinc 7440-66-6 2.6E+02 NC NC NC NV NC NC NC NC NC NV
Aroclor-1254 11097-69-1 8.7E-02 1.1E-08 1.1E-08 4.7E-09 NV 1 0.15 2.0E+00 2.0E+00 5.7E-04 2E-08 2E-08 3E-12 NV 4E-08 DDT 50-29-3 2.1E-02 2.6E-09 9.1E-10 1.1E-09 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 9E-10 3E-10 1E-13 NV 1E-091,1,1-Trichloroethane 71-55-6 5.3E-04 NC NC NC NC NC NC NC NC NC 1,2,3-Trimethylbenzene 526-73-8 7.9E-03 NC NC NC NC NC NC NC NC NC1,2,4-Trimethylbenzene 95-63-6 5.2E-03 NC NC NC NC NC NC NC NC NC 1,3,5-Trimethylbenzene 108-67-8 1.8E-03 NC NC NC NC NC NC NC NC NC Methyl Ethyl Ketone (2-Butanone) 78-93-3 6.3E-02 NC NC NC NC NC NC NC NC NC Acetone 67-64-1 2.1E-01 NC NC NC NC NC NC NC NC NC
Benzene 71-43-2 7.3E-04 8.9E-11 V 1.7E-05 1 1.0E-01 1.0E-01 2.9E-05 9E-12 V 5E-10 5E-10 Chloroform 67-66-3 1.9E-02 2.3E-09 V 6.6E-04 1 3.1E-02 3.1E-02 2.3E-05 7E-11 V 2E-08 2E-08 cis-1,2-Dichloroethylene 156-59-2 2.7E-02 NC NC NC NC NC NC NC NC NC Cymene (p-Isopropyltoluene) 99-87-6 6.6E-04 NC NC NC NC NC NC NC NC NCMethyl tert-Butyl Ether (MTBE) 1634-04-4 6.8E-04 8.3E-11 V 1.4E-05 1 1.8E-03 1.8E-03 2.6E-07 1E-13 V 4E-12 4E-12Methylene Chloride 75-09-2 1.0E-02 1.3E-09 V 4.5E-04 1 2.0E-03 2.0E-03 1.0E-06 3E-12 V 5E-10 5E-10 Naphthalene 91-20-3 1.1E-02 1.4E-09 1.5E-09 V 2.0E-05 1 0.15 1.2E-01 1.2E-01 3.4E-05 2E-10 2E-10 V 7E-10 1E-09Butylbenzene, n- 104-51-8 6.7E-04 NC NC NC NC NC NC NC NC NC Tetrachloroethylene 127-18-4 1.3E+00 1.5E-07 V 4.6E-02 1 5.4E-01 5.4E-01 6.1E-06 8E-08 V 3E-07 4E-07 trans-1,2-Dichloroethylene 156-60-5 1.8E-03 NC NC NC NC NC NC NC NC NC Trichloroethylene 79-01-6 3.5E-02 4.3E-09 V 1.4E-03 1 4.6E-02 4.6E-02 4.1E-06 2E-10 V 6E-09 6E-09 Acenaphthene 83-32-9 2.8E-02 NC NC NC NV NC NC NC 0.0E+00 NC NVAcenaphthylene 208-96-8 1.5E-02 NC NC NC NV NC NC NC NC NC NV Anthracene 120-12-7 7.5E-03 NC NC NC NV NC NC NC NC NC NV Benz[a]anthracene 56-55-3 8.0E-03 9.8E-10 1.0E-09 4.3E-10 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 1E-10 1E-10 5E-14 NV 2E-10 Benzo[a]pyrene 50-32-8 4.8E-02 5.9E-09 6.2E-09 2.6E-09 NV 1 0.15 1.0E+00 1.0E+00 1.1E-03 6E-09 6E-09 3E-12 NV 1E-08 Benzo[b]fluoranthene 205-99-2 7.1E-02 8.7E-09 9.2E-09 3.8E-09 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 9E-10 9E-10 4E-13 NV 2E-09 Benzo(g,h,i)perylene 191-24-2 2.6E-02 NC NC NC NV NC NC NC NC NC NV Benzo[k]fluoranthene 207-08-9 1.1E-01 1.3E-08 1.4E-08 6.0E-09 NV 1 0.15 1.0E-02 1.0E-02 1.1E-04 1E-10 1E-10 7E-13 NV 3E-10 Chrysene 218-01-9 1.6E-02 2.0E-09 2.1E-09 8.7E-10 NV 1 0.15 1.0E-03 1.0E-03 1.1E-05 2E-12 2E-12 1E-14 NV 4E-12 Dibenz[a,h]anthracene 53-70-3 6.3E-01 7.7E-08 8.2E-08 3.4E-08 NV 1 0.15 4.1E+00 4.1E+00 1.2E-03 3E-07 3E-07 4E-11 NV 7E-07 Dimethyl Phthalate 131-11-3 2.5E-01 NC NC NC NV NC NC NC NC NC NV Fluoranthene 206-44-0 1.2E-01 NC NC NC NV NC NC NC NC NC NV Fluorene 86-73-7 3.4E-03 NC NC NC NV NC NC NC NC NC NV
Indeno[1,2,3-cd]pyrene 193-39-5 7.2E-01 8.8E-08 9.3E-08 3.9E-08 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 9E-09 9E-09 4E-12 NV 2E-08 Phenanthrene 85-01-8 4.5E-02 NC NC NC NV NC NC NC NC NC NV Pyrene 129-00-0 2.9E-02 NC NC NC NV NC NC NC NC NC NV

CASRNCOPC
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, Cancer Risk-single July 2022

Page 2 of 6 ends

Appendix D, Table 2Non-Cancer Risk CalculationsMaximum/95%UCL Concentrations - SoilFUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Exposure Routes Evaluated HI (Total)
Human Health Risk Assessment Incidental Ingestion Yes 8E-01Building 29 Area Dermal Contact Yes 2E-01 Parcel A, North Campus Particulate Inhalation Yes 2E-04 Ambient Vapor Inhalation Yes 6E-03
1 NV - not volatile EC - exposure concentration RfD - reference dose HI - hazard index EPC - exposure point concentration (if blank, then COPC was not detected) V - volatile DAD - dermally absorbed dose RfC - reference concentration HQ - hazard quotient COPC - chemical of potential concern NTV - no toxicity value available ABS - absorption factor Intake Calculations Absorption Factors Non-Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd RfDoral RfDdermal RfC HQingestion HQdermal HQparticulate HQvapor HQtotal (mg/kg) (mg/kg/day) (mg/kg/day) (mg/m3) (mg/m3) (unitless) (unitless) (mg/kg/day) (mg/kg/day) (mg/m3) Arsenic 7440-38-2 8.6E+00 2.9E-06 6.2E-07 1.3E-09 NV 1 0.03 3.5E-06 3.5E-06 1.5E-05 8.4E-01 1.8E-01 8.7E-05 NV 1E+00 Barium 7440-39-3 3.7E+02 1.3E-04 9.0E-06 5.6E-08 NV 1 0.01 2.0E-01 1.4E-02 5.0E-04 6.4E-04 6.4E-04 1.1E-04 NV 1E-03 Copper 7440-50-8 4.2E+01 1.4E-05 1.0E-06 6.4E-09 NV 1 0.01 4.0E-02 4.0E-02 3.6E-04 2.5E-05 NTV NV 4E-04Zinc 7440-66-6 2.6E+02 8.7E-05 6.2E-06 3.9E-08 NV 1 0.01 3.0E-01 3.0E-01 2.9E-04 2.1E-05 NTV NV 3E-04 Aroclor-1254 11097-69-1 8.7E-02 3.0E-08 3.2E-08 1.3E-11 NV 1 0.15 2.0E-05 2.0E-05 8.0E-05 1.5E-03 1.6E-03 1.6E-07 NV 3E-03 DDT 50-29-3 2.1E-02 7.2E-09 2.5E-09 3.2E-12 NV 1 0.05 5.0E-04 5.0E-04 1.4E-05 5.1E-06 NTV NV 2E-05 1,1,1-Trichloroethane 71-55-6 5.3E-04 1.8E-10 V 7.8E-08 1 2.0E+00 2.0E+00 1.0E+00 9.0E-11 V 7.8E-08 8E-08 1,2,3-Trimethylbenzene 526-73-8 7.9E-03 2.7E-09 V 1.9E-07 1 1.0E-02 1.0E-02 6.0E-02 2.7E-07 V 3.2E-06 3E-06 1,2,4-Trimethylbenzene 95-63-6 5.2E-03 1.8E-09 V 1.5E-07 1 1.0E-02 1.0E-02 6.0E-02 1.8E-07 V 2.5E-06 3E-06 1,3,5-Trimethylbenzene 108-67-8 1.8E-03 6.3E-10 V 6.4E-08 1 1.0E-02 1.0E-02 6.0E-02 6.3E-08 V 1.1E-06 1E-06 Methyl Ethyl Ketone (2-Butanon 78-93-3 6.3E-02 2.2E-08 V 1.7E-06 1 6.0E-01 6.0E-01 5.0E+00 3.6E-08 V 3.4E-07 4E-07 Acetone 67-64-1 2.1E-01 7.2E-08 V 5.5E-06 1 9.0E-01 9.0E-01 3.1E+01 8.0E-08 V 1.8E-07 3E-07 Benzene 71-43-2 7.3E-04 2.5E-10 V 4.8E-08 1 4.0E-03 4.0E-03 3.0E-03 6.2E-08 V 1.6E-05 2E-05 Chloroform 67-66-3 1.9E-02 6.5E-09 V 1.9E-06 1 1.0E-02 1.0E-02 9.8E-02 6.5E-07 V 1.9E-05 2E-05 cis-1,2-Dichloroethylene 156-59-2 2.7E-02 9.4E-09 V 2.8E-06 1 2.0E-03 2.0E-03 8.0E-03 4.7E-06 V 3.5E-04 4E-04 Cymene (p-Isopropyltoluene) 99-87-6 6.6E-04 2.3E-10 V 1.3E-07 1 NTV NTV V NTV Methyl tert-Butyl Ether (MTBE) 1634-04-4 6.8E-04 2.3E-10 V 4.0E-08 1 3.0E+00 NTV NTV V 1.3E-08 1E-08 Methylene Chloride 75-09-2 1.0E-02 3.6E-09 V 1.3E-06 1 6.0E-03 6.0E-03 4.0E-01 5.9E-07 V 3.2E-06 4E-06 Naphthalene 91-20-3 1.1E-02 3.9E-09 4.1E-09 V 5.6E-08 1 0.15 2.0E-02 2.0E-02 3.0E-03 1.9E-07 2.0E-07 V 1.9E-05 2E-05 Butylbenzene, n- 104-51-8 6.7E-04 2.3E-10 V 1.9E-08 1 5.0E-02 5.0E-02 2.0E-01 4.6E-09 V 9.4E-08 1E-07 Tetrachloroethylene 127-18-4 1.3E+00 4.3E-07 V 1.3E-04 1 6.0E-03 6.0E-03 4.0E-02 7.2E-05 V 3.2E-03 3E-03 trans-1,2-Dichloroethylene 156-60-5 1.8E-03 6.2E-10 V 1.8E-07 1 2.0E-02 2.0E-02 8.0E-02 3.1E-08 V 2.3E-06 2E-06 Trichloroethylene 79-01-6 3.5E-02 1.2E-08 V 3.9E-06 1 5.0E-04 5.0E-04 2.0E-03 2.4E-05 V 1.9E-03 2E-03 Acenaphthene 83-32-9 2.8E-02 9.6E-09 1.0E-08 4.2E-12 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 1.6E-07 1.7E-07 1.8E-11 NV 3E-07 Acenaphthylene 208-96-8 1.5E-02 5.1E-09 5.4E-09 2.3E-12 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 8.6E-08 9.1E-08 9.5E-12 NV 2E-07 Anthracene 120-12-7 7.5E-03 2.6E-09 2.7E-09 1.1E-12 NV 1 0.15 3.0E-01 3.0E-01 1.2E+00 8.6E-09 9.1E-09 9.5E-13 NV 2E-08 Benz[a]anthracene 56-55-3 8.0E-03 2.7E-09 2.9E-09 1.2E-12 NV 1 0.15 NTV NTV NTV NV Benzo[a]pyrene 50-32-8 4.8E-02 1.6E-08 1.7E-08 7.3E-12 NV 1 0.15 3.0E-04 3.0E-04 2.0E-06 5.5E-05 5.8E-05 3.6E-06 NV 1E-04 Benzo[b]fluoranthene 205-99-2 7.1E-02 2.4E-08 2.6E-08 1.1E-11 NV 1 0.15 NTV NTV NTV NVBenzo(g,h,i)perylene 191-24-2 2.6E-02 8.9E-09 9.4E-09 3.9E-12 NV 1 0.15 3.0E-02 3.0E-02 3.0E-07 3.1E-07 NTV NV 6E-07 Benzo[k]fluoranthene 207-08-9 1.1E-01 3.8E-08 4.0E-08 1.7E-11 NV 1 0.15 NTV NTV NTV NV Chrysene 218-01-9 1.6E-02 5.5E-09 5.8E-09 2.4E-12 NV 1 0.15 NTV NTV NTV NV Dibenz[a,h]anthracene 53-70-3 6.3E-01 2.2E-07 2.3E-07 9.6E-11 NV 1 0.15 NTV NTV NTV NV Dimethyl Phthalate 131-11-3 2.5E-01 8.6E-08 6.0E-08 3.8E-11 NV 1 0.1 NTV NTV NTV NV Fluoranthene 206-44-0 1.2E-01 4.1E-08 4.3E-08 1.8E-11 NV 1 0.15 4.0E-02 4.0E-02 1.0E-06 1.1E-06 NTV NV 2E-06 Fluorene 86-73-7 3.4E-03 1.2E-09 1.2E-09 5.2E-13 NV 1 0.15 4.0E-02 4.0E-02 1.6E-01 2.9E-08 3.1E-08 3.2E-12 NV 6E-08 Indeno[1,2,3-cd]pyrene 193-39-5 7.2E-01 2.5E-07 2.6E-07 1.1E-10 NV 1 0.15 NTV NTV NTV NVPhenanthrene 85-01-8 4.5E-02 1.5E-08 1.6E-08 6.8E-12 NV 1 0.15 3.0E-02 3.0E-02 5.1E-07 5.4E-07 NTV NV 1E-06 Pyrene 129-00-0 2.9E-02 9.9E-09 1.1E-08 4.4E-12 NV 1 0.15 3.0E-02 3.0E-02 1.2E-01 3.3E-07 3.5E-07 3.7E-11 NV 7E-07

COPC CASRN
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, Non-Cancer Risk July 2022

Page 3 of 6 ends

Appendix D, Table 3
Intake and Risk Equations - Single Age
Human Health Risk Assessment
Building 29 Area
Parcel A, North Campus
Cancer Risk from Ingestion Parameter Value - Cancer Value - Non-Cancer Units CSF Chemical specific -- (mg/kg-day)-1
ELCR = Intakeing * CSF IUR Chemical specific -- (ug/m3
)
-1
Intake Age/chemical specific -- mg/kg-day
[EPC]soil * IR * ABSing * FI * EF * ED * C1 ECcan Age/chemical specific -- (ug/m3 )
BWx * ATlifetime ELCR Age/chemical specific -- unitless RfD -- Chemical specific mg/kg-day
RfC -- Chemical specific (mg/m3
)
DAD Age/chemical specific Age/chemical specific mg/kg-day Cancer Risk from Dermal Absorption DAEvent Age/chemical specific Age/chemical specific mg/cm2 -event
ECnc -- Age/chemical specific mg/m3
ELCR = DAD * CSF HQ -- Age/chemical specific unitless
[EPC]soil Chemical specific Chemical specific mg/kg
DAEvent * SA * EV * EF * ED [EPC]PART Appendix D, TABLE 4 Appendix D, TABLE 4 ug/m3 BWx * ATlifetime [EPC]VAPOR Appendix D, TABLE A-5 Appendix D, TABLE A-5 ug/m3 ABSing Chemical specific Chemical specific unitless
DAEvent = [EPC]soil * ABSd * AF * C1 ABSd Chemical specific Chemical specific unitless BW 80 80 kg
EF 100 100 day/year
ED 25 25 year
Cancer Risk from Inhalation AT -- 9125 day
ATlifetime 25550 -- day
ELCRinh = ECcan * IUR
IR 100 100 mg/day
[EPC]PART * ETPart * EF * ED --- OR--- [EPC]VAPOR * ETVap * EF * ED FI 1 1 unitless 24 * ATlifetime C1 0.000001 0.000001 kg/mg
SA 3527 3527 cm2
AF 0.2 0.2 mg/cm2
EV 1 1 event/day
Noncancer Risk from Ingestion
ETPart 8 8 hours/day
Intakeing C2 0.001 0.001 mg/ug
RfD ETVap 8 8 hours/day
0 0.00E+00 0.00E+00 0
[EPC]soil * IR * ABSing * FI * EF * ED * C1
BW * AT
Noncancer Risk from Dermal Absorption
DAD
RfD
DAEvent * SA * EV * EF * ED
BW * AT
DAEvent = [EPC]soil * ABSd * AF * C1
Noncancer Risk from Inhalation
ECnc
RfC
ECnc = [EPC]PART * ETPart * EF * ED * C2 --- OR--- [EPC]VAPOR * ETVap * EF * ED * C2 24 * AT
DADderm =
ECcan (age group x) =
HQ =
Intakeing (age group x) =
DADderm(age group x) =
Intakeing =
HQ =
HQ =
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, Risk Equ-single July 2022

Page 4 of 6 ends

Appendix D, Table 4Exposure FactorsHuman Health Risk AssessmentBuilding 29 AreaParcel A, North CampusPLACE "X" IN THE APPROPRIATE YELLOW SHADED CELLS FOR THE APPROPRIATE RECEPTOR AND BASIS FOR CALCULATIONS

SCENARIO USED TO CALCULATE RISKS X FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER

BASIS FOR CANCER CALCULATIONS X

BASIS FOR NON-CANCER CALCULATIONS X
RECEPTOR LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT)Standard Parameters Body Weight BW kg 80 DTSC, 2019Exposure Frequency EF day/year 100 Site SpecificExposure Duration ED year 25 DTSC, 2019Non–carcinogenic Averaging Time AT day 9125 Exposure duration expressed in days Carcinogenic Averaging Time ATlifetime day 25550 70 year lifetime Incidental Ingestion of Soil
Soil Ingestion Rate IR mg/day 100 DTSC, 2019Fraction Ingested FI unitless 1.0 AssumptionAge-Adjusted Soil Ingestion Rate IFSadj mg-yr/kg-day NA Dermal Exposure with Soil
Exposed Skin Surface Area SA cm2 3527 EPA, 2014
Soil Adherence Factor AF mg/cm2 0.2 DTSC, 2019
Fraction Dermal EV event/day 1.0 AssumptionAge-Adjusted Dermal Contact Factor DFSadj mg-yr/kg-day NA Particulate Inhalation
Exposure Time ETPart hours/day 8 Assumption
Vapor Inhalation
Exposure Time ETVap hours/day 8 Assumption
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, Exp July 2022

Page 5 of 6 ends

Appendix D, Table 5
Particulate to Outdoor Air EPC Calculations
Maximum/95%UCL Concentrations - Soil

FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Human Health Risk Assessment
Building 29 Area
Parcel A, North Campus
EQUATIONS:

EPC[PARTICULATE]
= EPC[SOIL] x PARTICULATE[AIR] x 1E-06 [kg/mg]
where:

PARTICULATE[AIR] = (1/PEF * 1E+09 ug/kg) or Measured/Modelled and:

PEF (m3
/kg) = Q/C x [(3600 s/hr) / ((0.036 x (1-V ) x (U m /U t ) 3 x F(x) )]
PARAMETER/DEFINITION UNITS DEFAULT Source
PARTICULATE[Air] / Particulate concentration in air ug/m3 1.66 Calculated or measured Measured or modeled PARTICULATE[AIR] ug/m3 Measured value PEF / Particulate emission factor m3
/kg Guidance value
PEF / Particulate emission factor m3
/kg 6.02E+08 Calculated here
Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source g/m2 -s per kg/m3 41.53 Calculated / USEPA, 2014 [a]
V / Fraction of vegetative cover unitless 0.5 Site-specific, estimated Um / mean annual windspeed m/s 4.69 Site-specific / USEPA, 2014 Ut
/ equivalent threshold value of wind speed at 7 m m/s 11.32 USEPA, 2014 F(x) / function dependant on Um/Ut derived using Cowherd et al. (1985) unitless 1.94E-01 Calculated / USEPA, 2014 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Phoenix Arizona [a] Area of Source: Specific to size of Exposure Area EPC Soil EPC Particulate
(mg/kg) (ug/m3
)
7440-38-2 Arsenic 8.56 1.4E-05
7440-39-3 Barium 371 6.2E-04
7440-50-8 Copper 42.1 7.0E-05
7440-66-6 Zinc 255 4.2E-04
11097-69-1 Aroclor-1254 0.087 1.4E-07
50-29-3 DDT 0.021 3.5E-08
71-55-6 1,1,1-Trichloroethane 0.000525 V
526-73-8 1,2,3-Trimethylbenzene 0.00788 V
95-63-6 1,2,4-Trimethylbenzene 0.0052 V
108-67-8 1,3,5-Trimethylbenzene 0.00183 V
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.0631 V
67-64-1 Acetone 0.21 V
71-43-2 Benzene 0.000725 V
67-66-3 Chloroform 0.019 V
156-59-2 cis-1,2-Dichloroethylene 0.0274 V
99-87-6 Cymene (p-Isopropyltoluene) 0.00066 V
1634-04-4 Methyl tert-Butyl Ether (MTBE) 0.000675 V
75-09-2 Methylene Chloride 0.0104 V
91-20-3 Naphthalene 0.0113 V
104-51-8 Butylbenzene, n- 0.00067 V
127-18-4 Tetrachloroethylene 1.26 V
156-60-5 trans-1,2-Dichloroethylene 0.0018 V
79-01-6 Trichloroethylene 0.035 V
83-32-9 Acenaphthene 0.028 4.7E-08
208-96-8 Acenaphthylene 0.015 2.5E-08
120-12-7 Anthracene 0.0075 1.2E-08
56-55-3 Benz[a]anthracene 0.008 1.3E-08
50-32-8 Benzo[a]pyrene 0.048 8.0E-08
205-99-2 Benzo[b]fluoranthene 0.071 1.2E-07
191-24-2 Benzo(g,h,i)perylene 0.026 4.3E-08
207-08-9 Benzo[k]fluoranthene 0.11 1.8E-07
218-01-9 Chrysene 0.016 2.7E-08
53-70-3 Dibenz[a,h]anthracene 0.63 1.0E-06
131-11-3 Dimethyl Phthalate 0.25 4.2E-07
206-44-0 Fluoranthene 0.12 2.0E-07
86-73-7 Fluorene 0.0034 5.6E-09
193-39-5 Indeno[1,2,3-cd]pyrene 0.72 1.2E-06
85-01-8 Phenanthrene 0.045 7.5E-08
129-00-0 Pyrene 0.029 4.8E-08

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, PEF July 2022

Page 6 of 6 ends

Appendix D, Table 6
Vapor to Outdoor Air EPC Calculations
Maximum/95%UCL Concentrations - Soil

FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER - LANDSCAPER/UTILITY MAINTENANCE WORKER (ADULT) Human Health Risk Assessment
Building 29 Area
Parcel A, North Campus
EQUATIONS:

EPC[VAPOR] = EPC[SOIL] x 1/VF x 1000 ug/mg
where:

VF (m3
/kg) = Q/C x (3.14 x DA x T)1/2 x 10-4(m2/cm2) / (2 x Pb x DA) and:

DA = [(a
10/3 Di H' +w10/3 Dw)/n2
] / PbKd +w + Oa H'
ARAMETER/DEFINITION UNITS DEFAULT Source
VF / volatilization factor m3
/kg Calculated
DA / apparent diffusivity cm2
/s Calculated
g/m2
-s per kg/m3 41.53 USEPA, 2014 [a]
T / exposure interval s 7.88E+08 FUTURE ON-SITE LANDSCAPER/UTILITY MAINTENANCE WORKER b / dry soil bulk density g/cm3 1.66 USEPA, 2014
a / air-filled soil porosity Lair/Lsoil 0.321 USEPA, 2014 n / total soil porosity Lpore/Lsoil 0.375 USEPA, 2014
w / water-filled soil porosity Lwater/Lsoil 0.054 USEPA, 2014 s / soil particle density g/cm3 2.65 USEPA, 1996
Di
/ diffusivity in air cm2
/s chemical-specific
H' / Henry's Law constant dimensionless chemical-specific Dw / diffusivity in water cm2
/s chemical-specific
Kd / soil-water partition coefficient (Koc x foc) organics cm3 /g chemical-specific
Koc / soil organic carbon partition coefficient cm3
/g chemical-specific
foc / fraction organic carbon in soil g/g 0.006 Default USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Cleveland, Ohio [a] Area of Source: Specific to size of Exposure Area Volatile Di H' Dw Kd Koc DA VF EPC Soil EPC Vapor
(Y/N) (cm2
/s) (unitless) (cm2/s) (cm3/g) (cm3/g) (cm2/s) (m3/kg) (mg/kg) (ug/m3) 7440-38-2 Arsenic N NV
7440-39-3 Barium N NV
7440-50-8 Copper N NV
7440-66-6 Zinc N NV
11097-69-1 Aroclor-1254 N 4.01E-02 1.16E-02 4.68E-06 7.83E+02 1.31E+05 NV 50-29-3 DDT N 3.79E-02 3.40E-04 4.43E-06 1.01E+03 1.69E+05 NV 71-55-6 1,1,1-Trichloroethane Y 6.48E-02 7.03E-01 9.60E-06 2.63E-01 4.39E+01 1.0E-02 615 0.000525 8.5E-04 526-73-8 1,2,3-Trimethylbenzene Y 6.13E-02 1.78E-01 8.02E-06 3.76E+00 6.27E+02 2.8E-04 3742 0.00788 2.1E-03 95-63-6 1,2,4-Trimethylbenzene Y 6.07E-02 2.52E-01 7.92E-06 3.69E+00 6.14E+02 3.9E-04 3137 0.0052 1.7E-03 108-67-8 1,3,5-Trimethylbenzene Y 6.02E-02 3.59E-01 7.84E-06 3.61E+00 6.02E+02 5.6E-04 2621 0.00183 7.0E-04 78-93-3 Methyl Ethyl Ketone (2-Butanone) Y 9.14E-02 2.33E-03 1.02E-05 2.71E-02 4.51E+00 3.4E-04 3357 0.0631 1.9E-02 67-64-1 Acetone Y 1.06E-01 1.43E-03 1.15E-05 1.42E-02 2.36E+00 3.1E-04 3518 0.21 6.0E-02 71-43-2 Benzene Y 8.95E-02 2.27E-01 1.03E-05 8.75E-01 1.46E+02 2.1E-03 1367 0.000725 5.3E-04 67-66-3 Chloroform Y 7.69E-02 1.50E-01 1.09E-05 1.91E-01 3.18E+01 4.4E-03 935 0.019 2.0E-02 156-59-2 cis-1,2-Dichloroethylene Y 8.84E-02 1.67E-01 1.13E-05 2.38E-01 3.96E+01 4.7E-03 905 0.0274 3.0E-02 99-87-6 Cymene (p-Isopropyltoluene) Y 0.057249 4.66E-01 6.73e-06 2.02E-02 3.36E+00 1.8E-02 462 0.00066 1.4E-03 1634-04-4 Methyl tert-Butyl Ether (MTBE) Y 7.53E-02 2.40E-02 8.59E-06 6.94E-02 1.16E+01 1.6E-03 1535 0.000675 4.4E-04 75-09-2 Methylene Chloride Y 9.99E-02 1.33E-01 1.25E-05 1.30E-01 2.17E+01 6.8E-03 753 0.0104 1.4E-02 91-20-3 Naphthalene Y 6.05E-02 1.80E-02 8.38E-06 9.26E+00 1.54E+03 1.1E-05 18471 0.0113 6.1E-04 104-51-8 Butylbenzene, n- Y 5.28E-02 6.50E-01 7.33E-06 8.89E+00 1.48E+03 3.7E-04 3246 0.00067 2.1E-04 127-18-4 Tetrachloroethylene Y 5.05E-02 7.24E-01 9.46E-06 5.70E-01 9.49E+01 4.8E-03 901 1.26 1.4E+00 156-60-5 trans-1,2-Dichloroethylene Y 8.76E-02 1.67E-01 1.12E-05 2.38E-01 3.96E+01 4.7E-03 909 0.0018 2.0E-03 79-01-6 Trichloroethylene Y 6.87E-02 4.03E-01 1.02E-05 3.64E-01 6.07E+01 5.7E-03 828 0.035 4.2E-02 83-32-9 Acenaphthene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 208-96-8 Acenaphthylene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 120-12-7 Anthracene N 3.90E-02 2.27E-03 7.85E-06 9.82E+01 1.64E+04 NV 56-55-3 Benz[a]anthracene N 5.09E-02 4.91E-04 5.94E-06 1.06E+03 1.77E+05 NV 50-32-8 Benzo[a]pyrene N 4.76E-02 1.87E-05 5.56E-06 3.52E+03 5.87E+05 NV 205-99-2 Benzo[b]fluoranthene N 4.76E-02 2.69E-05 5.56E-06 3.60E+03 5.99E+05 NV 191-24-2 Benzo(g,h,i)perylene N 5.28E-02 9.65E-08 6.17E-06 1.35E+00 2.25E+02 NV 207-08-9 Benzo[k]fluoranthene N 4.76E-02 2.39E-05 5.56E-06 3.52E+03 5.87E+05 NV 218-01-9 Chrysene N 2.61E-02 2.14E-04 6.75E-06 1.08E+03 1.81E+05 NV 53-70-3 Dibenz[a,h]anthracene N 4.46E-02 5.76E-06 5.21E-06 1.15E+04 1.91E+06 NV 131-11-3 Dimethyl Phthalate N 2.61E-02 2.49E-05 6.72E-06 6.29E-01 1.05E+02 NV 206-44-0 Fluoranthene N 2.76E-02 3.62E-04 7.18E-06 3.33E+02 5.55E+04 NV 86-73-7 Fluorene N 4.40E-02 3.93E-03 7.89E-06 5.50E+01 9.16E+03 NV 193-39-5 Indeno[1,2,3-cd]pyrene N 4.48E-02 6.56E-05 5.23E-06 2.08E+04 3.47E+06 NV 85-01-8 Phenanthrene N 2.08E-02 5.81E-12 5.19E-06 5.56E+01 9.27E+03 NV 129-00-0 Pyrene N 2.78E-02 4.87E-04 7.25E-06 3.26E+02 5.43E+04 NV Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_landscaper_B29-ucl.xlsx, VF July 2022 Calculation of Respirable Particulate Emission Factor (PEF) Building 29 Area
Sources: EPA, 1996. Soil Screening Guidance: Technical Background Document. May.

EPA, 2001. Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites. Peer Review Draft. March.

Assumptions: The soil surface has an unlimited erosion potential.

0.036 = Respirable fraction (g/m2-hr);
V = Fraction of impacted surface with vegetative cover (unitless);U m = Mean annual wind speed (m/s), from EPA, 1996, 2001; Ut = Equivalent threshold value of windspeed at 7 m (m/s), from EPA, 1996, 2001; F(x) = Function dependent on U
m/Ut derived using Cowherd et al. 1985 (unitless), from EPA, 1996, 2001.

AB C
Asite Q/C V
U
m
Ut F(x) PEF

11.911 18.439 209.7845 9.5 41.53 0.5 4.69 11.32 0.194 6.02E+08 Building 29 Exposure Area
Planned Loading Dock Excavation Area
Construction Worker

Page 1 of 6 ends

Appendix D, Table 1Cancer Risk Calculations - Single AgeMaximum/95%UCL Concentrations - SoilFUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Exposure Routes Evaluated ELCR (Total)
Human Health Risk Assessment Incidental Ingestion Yes 2E-07 Building 29 Excavation Area Dermal Contact Yes 1E-07Parcel A, North Campus Particulate Inhalation Yes 3E-09 Ambient Vapor Inhalation Yes 8E-07
1E-06
NC - not carcinogenic by this exposure route NV - not volatile EC - exposure concentration CSF - cancer slope factor ELCR - excess lifetime cancer risk COPC - chemical of potential concernNTV - no toxicity value available DAD - dermally absorbed dose ABS - absorption factor UR - cancer unit risk EPC - exposure point concentration Intake Calculations Absorption Factors Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd CSForal CSFdermal IUR ELCRingestion ELCRdermal ELCRparticulate ELCRvapor ELCRtotal (mg/kg) (mg/kg/day) (mg/kg/day) (ug/m3) (ug/m3) (unitless) (unitless) (mg/kg/day)-1 (mg/kg/day)-1 (ug/m3)-1 Copper 7440-50-8 4.1E+01 NC NC NC NV NC NC NC NC NC NV
Zinc 7440-66-6 5.1E+01 NC NC NC NV NC NC NC NC NC NV
Aroclor-1254 11097-69-1 1.3E+00 5.2E-08 6.7E-08 4.2E-06 NV 1 0.15 2.0E+00 2.0E+00 5.7E-04 1E-07 1E-07 2E-09 NV 2E-07 DDT 50-29-3 2.1E-02 8.5E-10 3.6E-10 6.8E-08 NV 1 0.05 3.4E-01 3.4E-01 9.7E-05 3E-10 1E-10 7E-12 NV 4E-10Acenaphthene 83-32-9 2.8E-02 NC NC NC NV NC NC NC 0.0E+00 NC NVAcenaphthylene 208-96-8 1.5E-02 NC NC NC NV NC NC NC NC NC NV Anthracene 120-12-7 7.5E-03 NC NC NC NV NC NC NC NC NC NV Benz[a]anthracene 56-55-3 8.0E-03 3.2E-10 4.1E-10 2.6E-08 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 3E-11 4E-11 3E-12 NV 8E-11 Benzo[a]pyrene 50-32-8 2.0E-02 8.1E-10 1.0E-09 6.5E-08 NV 1 0.15 1.0E+00 1.0E+00 1.1E-03 8E-10 1E-09 7E-11 NV 2E-09 Benzo[b]fluoranthene 205-99-2 1.8E-02 7.3E-10 9.3E-10 5.9E-08 NV 1 0.15 1.0E-01 1.0E-01 1.1E-04 7E-11 9E-11 6E-12 NV 2E-10 Benzo(g,h,i)perylene 191-24-2 1.4E-02 NC NC NC NV NC NC NC NC NC NV Benzo[k]fluoranthene 207-08-9 1.1E-01 4.4E-09 5.7E-09 3.6E-07 NV 1 0.15 1.0E-02 1.0E-02 1.1E-04 4E-11 6E-11 4E-11 NV 1E-10 Chrysene 218-01-9 1.6E-02 6.5E-10 8.3E-10 5.2E-08 NV 1 0.15 1.0E-03 1.0E-03 1.1E-05 6E-13 8E-13 6E-13 NV 2E-12 Fluoranthene 206-44-0 1.2E-01 NC NC NC NV NC NC NC NC NC NV Fluorene 86-73-7 3.4E-03 NC NC NC NV NC NC NC NC NC NV
Phenanthrene 85-01-8 4.5E-02 NC NC NC NV NC NC NC NC NC NV Pyrene 129-00-0 2.9E-02 NC NC NC NV NC NC NC NC NC NV
1,1,1-Trichloroethane 71-55-6 5.3E-04 NC NC NC NC NC NC NC NC NC 1,2,3-Trimethylbenzene 526-73-8 1.3E-03 NC NC NC NC NC NC NC NC NC 1,2,4-Trimethylbenzene 95-63-6 3.0E-03 NC NC NC NC NC NC NC NC NC Methyl Ethyl Ketone (2-Butanone) 78-93-3 4.6E-02 NC NC NC NC NC NC NC NC NC Acetone 67-64-1 1.5E-01 NC NC NC NC NC NC NC NC NC
Benzene 71-43-2 7.3E-04 2.9E-11 V 7.8E-06 1 1.0E-01 1.0E-01 2.9E-05 3E-12 V 2E-10 2E-10 Chloroform 67-66-3 1.9E-02 7.7E-10 V 3.0E-04 1 3.1E-02 3.1E-02 2.3E-05 2E-11 V 7E-09 7E-09 cis-1,2-Dichloroethylene 156-59-2 1.5E-03 NC NC NC NC NC NC NC NC NC Methyl tert-Butyl Ether (MTBE) 1634-04-4 6.8E-04 2.7E-11 V 6.5E-06 1 1.8E-03 1.8E-03 2.6E-07 5E-14 V 2E-12 2E-12 Methylene Chloride 75-09-2 9.5E-03 3.8E-10 V 1.9E-04 1 2.0E-03 2.0E-03 1.0E-06 8E-13 V 2E-10 2E-10 Tetrachloroethylene 127-18-4 1.3E+00 5.1E-08 V 2.1E-02 1 5.4E-01 5.4E-01 6.1E-06 3E-08 V 1E-07 2E-07trans-1,2-Dichloroethylene 156-60-5 1.8E-03 NC NC NC NC NC NC NC NC NC Trichloroethylene 79-01-6 8.8E+00 3.6E-07 V 1.6E-01 1 4.6E-02 4.6E-02 4.1E-06 2E-08 V 6E-07 7E-07

CASRNCOPC
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_construction_B29_95ucl.xlsx, Cancer Risk-single July 2022

Page 2 of 6 ends

Appendix D, Table 2Non-Cancer Risk CalculationsMaximum/95%UCL Concentrations - SoilFUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Exposure Routes Evaluated HI (Total)
Human Health Risk Assessment Incidental Ingestion Yes 2E-01Building 29 Excavation Area Dermal Contact Yes 2E-01 Parcel A, North Campus Particulate Inhalation Yes 6E-03 Ambient Vapor Inhalation Yes 6E+00
6 NV - not volatile EC - exposure concentration RfD - reference dose HI - hazard index EPC - exposure point concentration (if blank, then COPC was not detected) V - volatile DAD - dermally absorbed dose RfC - reference concentration HQ - hazard quotient COPC - chemical of potential concern NTV - no toxicity value available ABS - absorption factor Intake Calculations Absorption Factors Non-Cancer Toxicity Values EPC Intakeingestion DADdermal ECparticulate ECvapor ABSing ABSd RfDoral RfDdermal RfC HQingestion HQdermal HQparticulate HQvapor HQtotal (mg/kg) (mg/kg/day) (mg/kg/day) (mg/m3) (mg/m3) (unitless) (unitless) (mg/kg/day) (mg/kg/day) (mg/m3) Copper 7440-50-8 4.1E+01 1.2E-04 9.4E-06 NV 1 4.0E-02 4.0E-02 2.9E-03 NTV NV 3E-03 Zinc 7440-66-6 5.1E+01 1.4E-04 1.2E-05 NV 1 3.0E-01 3.0E-01 4.8E-04 NTV NV 5E-04 Aroclor-1254 11097-69-1 1.3E+00 3.7E-06 4.7E-06 3.0E-07 NV 1 0.15 2.0E-05 2.0E-05 8.0E-05 1.8E-01 2.4E-01 3.7E-03 NV 4E-01 DDT 50-29-3 2.1E-02 5.9E-08 2.5E-08 4.8E-09 NV 1 0.05 5.0E-04 5.0E-04 1.2E-04 5.1E-05 NTV NV 2E-04 Acenaphthene 83-32-9 2.8E-02 7.9E-08 1.0E-07 6.4E-09 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 1.3E-06 1.7E-06 2.7E-08 NV 3E-06Acenaphthylene 208-96-8 1.5E-02 4.2E-08 5.4E-08 3.4E-09 NV 1 0.15 6.0E-02 6.0E-02 2.4E-01 7.1E-07 9.1E-07 1.4E-08 NV 2E-06Anthracene 120-12-7 7.5E-03 2.1E-08 2.7E-08 1.7E-09 NV 1 0.15 3.0E-01 3.0E-01 1.2E+00 7.1E-08 9.1E-08 1.4E-09 NV 2E-07 Benz[a]anthracene 56-55-3 8.0E-03 2.3E-08 2.9E-08 1.8E-09 NV 1 0.15 NTV NTV NTV NV Benzo[a]pyrene 50-32-8 2.0E-02 5.7E-08 7.2E-08 4.6E-09 NV 1 0.15 3.0E-04 3.0E-04 2.0E-06 1.9E-04 2.4E-04 2.3E-03 NV 3E-03 Benzo[b]fluoranthene 205-99-2 1.8E-02 5.1E-08 6.5E-08 4.1E-09 NV 1 0.15 NTV NTV NTV NVBenzo(g,h,i)perylene 191-24-2 1.4E-02 4.0E-08 5.1E-08 3.2E-09 NV 1 0.15 3.0E-02 3.0E-02 1.3E-06 1.7E-06 NTV NV 3E-06Benzo[k]fluoranthene 207-08-9 1.1E-01 3.1E-07 4.0E-07 2.5E-08 NV 1 0.15 NTV NTV NTV NV Chrysene 218-01-9 1.6E-02 4.5E-08 5.0E-08 3.7E-09 NV 1 0.13 NTV NTV NTV NV Fluoranthene 206-44-0 1.2E-01 3.4E-07 4.3E-07 2.7E-08 NV 1 0.15 4.0E-02 4.0E-02 8.5E-06 1.1E-05 NTV NV 2E-05 Fluorene 86-73-7 3.4E-03 9.6E-09 1.2E-08 7.8E-10 NV 1 0.15 4.0E-02 4.0E-02 1.6E-01 2.4E-07 3.1E-07 4.9E-09 NV 6E-07 Phenanthrene 85-01-8 4.5E-02 1.3E-07 1.6E-07 1.0E-08 NV 1 0.15 3.0E-02 3.0E-02 4.2E-06 5.4E-06 NTV NV 1E-05 Pyrene 129-00-0 2.9E-02 8.2E-08 1.1E-07 6.6E-09 NV 1 0.15 3.0E-02 3.0E-02 1.2E-01 2.7E-06 3.5E-06 5.5E-08 NV 6E-06 1,1,1-Trichloroethane 71-55-6 5.3E-04 1.5E-09 V 8.8E-07 1 2.0E+00 2.0E+00 1.0E+00 7.4E-10 V 8.8E-07 9E-07 1,2,3-Trimethylbenzene 526-73-8 1.3E-03 3.5E-09 V 3.5E-07 1 1.0E-02 1.0E-02 6.0E-02 3.5E-07 V 5.8E-06 6E-06 1,2,4-Trimethylbenzene 95-63-6 3.0E-03 8.6E-09 V 1.0E-06 1 1.0E-02 1.0E-02 6.0E-02 8.6E-07 V 1.7E-05 2E-05 Methyl Ethyl Ketone (2-Butanon 78-93-3 4.6E-02 1.3E-07 V 1.4E-05 1 6.0E-01 6.0E-01 5.0E+00 2.1E-07 V 2.8E-06 3E-06 Acetone 67-64-1 1.5E-01 4.2E-07 V 4.4E-05 1 9.0E-01 9.0E-01 3.1E+01 4.7E-07 V 1.4E-06 2E-06 Benzene 71-43-2 7.3E-04 2.0E-09 V 5.5E-07 1 4.0E-03 4.0E-03 3.0E-03 5.1E-07 V 1.8E-04 2E-04 Chloroform 67-66-3 1.9E-02 5.4E-08 V 2.1E-05 1 1.0E-02 1.0E-02 9.8E-02 5.4E-06 V 2.1E-04 2E-04 cis-1,2-Dichloroethylene 156-59-2 1.5E-03 4.3E-09 V 1.7E-06 1 2.0E-03 2.0E-03 8.0E-03 2.2E-06 V 2.2E-04 2E-04 Methyl tert-Butyl Ether (MTBE) 1634-04-4 6.8E-04 1.9E-09 V 4.5E-07 1 3.0E+00 NTV NTV V 1.5E-07 2E-07 Methylene Chloride 75-09-2 9.5E-03 2.7E-08 V 1.3E-05 1 6.0E-03 6.0E-03 4.0E-01 4.5E-06 V 3.3E-05 4E-05 Tetrachloroethylene 127-18-4 1.3E+00 3.6E-06 V 1.4E-03 1 6.0E-03 6.0E-03 4.0E-02 5.9E-04 V 3.6E-02 4E-02 trans-1,2-Dichloroethylene 156-60-5 1.8E-03 5.1E-09 V 2.0E-06 1 2.0E-02 2.0E-02 8.0E-02 2.5E-07 V 2.6E-05 3E-05 Trichloroethylene 79-01-6 8.8E+00 2.5E-05 V 1.1E-02 1 5.0E-04 5.0E-04 2.0E-03 5.0E-02 V 5.5E+00 6E+00

Page 3 of 6 ends

Appendix D, Table 3
Intake and Risk Equations - Single Age
Human Health Risk Assessment
Building 29 Excavation Area
Parcel A, North Campus
Cancer Risk from Ingestion Parameter Value - Cancer Value - Non-Cancer Units CSF Chemical specific -- (mg/kg-day)-1
ELCR = Intakeing * CSF IUR Chemical specific -- (ug/m3
)
-1
Intake Age/chemical specific -- mg/kg-day
[EPC]soil * IR * ABSing * FI * EF * ED * C1 ECcan Age/chemical specific -- (ug/m3 )
BWx * ATlifetime ELCR Age/chemical specific -- unitless RfD -- Chemical specific mg/kg-day
RfC -- Chemical specific (mg/m3
)
DAD Age/chemical specific Age/chemical specific mg/kg-day Cancer Risk from Dermal Absorption DAEvent Age/chemical specific Age/chemical specific mg/cm2 -event
ECnc -- Age/chemical specific mg/m3
ELCR = DAD * CSF HQ -- Age/chemical specific unitless
[EPC]soil Chemical specific Chemical specific mg/kg
DAEvent * SA * EV * EF * ED [EPC]PART Appendix D, TABLE 4 Appendix D, TABLE 4 ug/m3 BWx * ATlifetime [EPC]VAPOR Appendix D, TABLE A-5 Appendix D, TABLE A-5 ug/m3 ABSing Chemical specific Chemical specific unitless
DAEvent = [EPC]soil * ABSd * AF * C1 ABSd Chemical specific Chemical specific unitless BW 80 80 kg
EF 250 250 day/year
ED 1 1 year
Cancer Risk from Inhalation AT -- 365 day
ATlifetime 25550 -- day
ELCRinh = ECcan * IUR
IR 330 330 mg/day
[EPC]PART * ETPart * EF * ED --- OR--- [EPC]VAPOR * ETVap * EF * ED FI 1 1 unitless 24 * ATlifetime C1 0.000001 0.000001 kg/mg
SA 3527 3527 cm2
AF 0.8 0.8 mg/cm2
EV 1 1 event/day
Noncancer Risk from Ingestion
ETPart 8 8 hours/day
Intakeing C2 0.001 0.001 mg/ug
RfD ETVap 8 8 hours/day
0 0.00E+00 0.00E+00 0
[EPC]soil * IR * ABSing * FI * EF * ED * C1
BW * AT
Noncancer Risk from Dermal Absorption
DAD
RfD
DAEvent * SA * EV * EF * ED
BW * AT
DAEvent = [EPC]soil * ABSd * AF * C1
Noncancer Risk from Inhalation
ECnc
RfC
ECnc = [EPC]PART * ETPart * EF * ED * C2 --- OR--- [EPC]VAPOR * ETVap * EF * ED * C2 24 * AT
DADderm =
ECcan (age group x) =
HQ =
Intakeing (age group x) =
DADderm(age group x) =
Intakeing =
HQ =
HQ =
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_construction_B29_95ucl.xlsx, Risk Equ-single July 2022

Page 4 of 6 ends

Appendix D, Table 4Exposure FactorsHuman Health Risk AssessmentBuilding 29 Excavation AreaParcel A, North CampusPLACE "X" IN THE APPROPRIATE YELLOW SHADED CELLS FOR THE APPROPRIATE RECEPTOR AND BASIS FOR CALCULATIONS

SCENARIO USED TO CALCULATE RISKS X FUTURE ON-SITE CONSTRUCTION WORKER

BASIS FOR CANCER CALCULATIONS X

BASIS FOR NON-CANCER CALCULATIONS X
RECEPTOR CONSTRUCTION WORKER (ADULT)Standard Parameters Body Weight BW kg 80 DTSC, 2019Exposure Frequency EF day/year 250 Site SpecificExposure Duration ED year 1 DTSC, 2019Non–carcinogenic Averaging Time AT day 365 Exposure duration expressed in days Carcinogenic Averaging Time ATlifetime day 25550 70 year lifetime Incidental Ingestion of Soil
Soil Ingestion Rate IR mg/day 330 DTSC, 2019Fraction Ingested FI unitless 1.0 AssumptionAge-Adjusted Soil Ingestion Rate IFSadj mg-yr/kg-day NA Dermal Exposure with Soil
Exposed Skin Surface Area SA cm2 3527 EPA, 2014
Soil Adherence Factor AF mg/cm2 0.8 DTSC, 2019
Fraction Dermal EV event/day 1.0 AssumptionAge-Adjusted Dermal Contact Factor DFSadj mg-yr/kg-day NA Particulate Inhalation
Exposure Time ETPart hours/day 8 Assumption
Vapor Inhalation
Exposure Time ETVap hours/day 8 Assumption
Haley & Aldrich, Inc.G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_construction_B29_95ucl.xlsx, Exp July 2022

Page 5 of 6 ends

Appendix D, Table 5
Particulate to Outdoor Air EPC Calculations
Maximum/95%UCL Concentrations - Soil

FUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Human Health Risk Assessment
Building 29 Excavation Area
Parcel A, North Campus
EQUATIONS:

EPC[PARTICULATE]
= EPC[SOIL] x PARTICULATE[AIR] x 1E-06 [kg/mg]
where:

PARTICULATE[AIR] = (1/PEF * 1E+09 ug/kg) or Measured/Modelled and:

PEF (m3
/kg) = Q/C x [(3600 s/hr) / ((0.036 x (1-V ) x (U m /U t ) 3 x F(x) )]
PARAMETER/DEFINITION UNITS DEFAULT Source
PARTICULATE[Air] / Particulate concentration in air ug/m3 1000.00 Calculated or measured Measured or modeled PARTICULATE[AIR] ug/m3 Measured value PEF / Particulate emission factor m3
/kg Guidance value
PEF / Particulate emission factor m3
/kg 1.00E+06 Calculated here
Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source g/m2 -s per kg/m3 8.49 Calculated / USEPA, 2014 [a]
V / Fraction of vegetative cover unitless 0.5 Site-specific, estimated Um / mean annual windspeed m/s 4.69 Site-specific / USEPA, 2014 Ut
/ equivalent threshold value of wind speed at 7 m m/s 11.32 USEPA, 2014 F(x) / function dependant on Um/Ut derived using Cowherd et al. (1985) unitless 1.94E-01 Calculated / USEPA, 2014 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Phoenix Arizona [a] Area of Source: Specific to size of Exposure Area EPC Soil EPC Particulate
(mg/kg) (ug/m3
)
7440-50-8 Copper 41 4.1E-02
7440-66-6 Zinc 51 5.1E-02
11097-69-1 Aroclor-1254 1.3 1.3E-03
50-29-3 DDT 0.021 2.1E-05
83-32-9 Acenaphthene 0.028 2.8E-05
208-96-8 Acenaphthylene 0.015 1.5E-05
120-12-7 Anthracene 0.0075 7.5E-06
56-55-3 Benz[a]anthracene 0.008 8.0E-06
50-32-8 Benzo[a]pyrene 0.02 2.0E-05
205-99-2 Benzo[b]fluoranthene 0.018 1.8E-05
191-24-2 Benzo(g,h,i)perylene 0.014 1.4E-05
207-08-9 Benzo[k]fluoranthene 0.11 1.1E-04
218-01-9 Chrysene 0.016 1.6E-05
206-44-0 Fluoranthene 0.12 1.2E-04
86-73-7 Fluorene 0.0034 3.4E-06
85-01-8 Phenanthrene 0.045 4.5E-05
129-00-0 Pyrene 0.029 2.9E-05
71-55-6 1,1,1-Trichloroethane 0.000525 V
526-73-8 1,2,3-Trimethylbenzene 0.00125 V
95-63-6 1,2,4-Trimethylbenzene 0.00303 V
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.0455 V
67-64-1 Acetone 0.15 V
71-43-2 Benzene 0.000725 V
67-66-3 Chloroform 0.019 V
156-59-2 cis-1,2-Dichloroethylene 0.00153 V
1634-04-4 Methyl tert-Butyl Ether (MTBE) 0.000675 V
75-09-2 Methylene Chloride 0.00953 V
127-18-4 Tetrachloroethylene 1.26 V
156-60-5 trans-1,2-Dichloroethylene 0.0018 V
79-01-6 Trichloroethylene 8.83 V

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_construction_B29_95ucl.xlsx, PEF July 2022

Page 6 of 6 ends

Appendix D, Table 6
Vapor to Outdoor Air EPC Calculations
Maximum/95%UCL Concentrations - Soil

FUTURE ON-SITE CONSTRUCTION WORKER - CONSTRUCTION WORKER (ADULT) Human Health Risk Assessment
Building 29 Excavation Area
Parcel A, North Campus
EQUATIONS:

EPC[VAPOR] = EPC[SOIL] x 1/VF x 1000 ug/mg
where:

VF (m3
/kg) = Q/C x (3.14 x DA x T)1/2 x 10-4(m2/cm2) / (2 x Pb x DA) x (1/Fd) and:

DA = [(a
10/3 Di H' +w10/3 Dw)/n2
] / PbKd +w + Oa H'
ARAMETER/DEFINITION UNITS DEFAULT Source
VF / volatilization factor m3
/kg Calculated
DA / apparent diffusivity cm2
/s Calculated
g/m2
-s per kg/m3 8.49 USEPA, 2014 [a]
T / exposure interval s 3.15E+07 FUTURE ON-SITE CONSTRUCTION WORKER b / dry soil bulk density g/cm3 1.66 USEPA, 2014
a / air-filled soil porosity Lair/Lsoil 0.321 USEPA, 2014 n / total soil porosity Lpore/Lsoil 0.375 USEPA, 2014
w / water-filled soil porosity Lwater/Lsoil 0.054 USEPA, 2014 s / soil particle density g/cm3 2.65 USEPA, 1996
Di
/ diffusivity in air cm2
/s chemical-specific
H' / Henry's Law constant dimensionless chemical-specific Dw / diffusivity in water cm2
/s chemical-specific
Kd / soil-water partition coefficient (Koc x foc) organics cm3 /g chemical-specific
Koc / soil organic carbon partition coefficient cm3
/g chemical-specific
foc / fraction organic carbon in soil g/g 0.006 Default Fd / Disperson correlation factor Unitless 0.185 Default, USEPA 2002 USEPA, 2014. Regional Screening Levels.
[a] Climactic zone: Cleveland, Ohio [a] Area of Source: Specific to size of Exposure Area Volatile Di H' Dw Kd Koc DA VF EPC Soil EPC Vapor
(Y/N) (cm2
/s) (unitless) (cm2/s) (cm3/g) (cm3/g) (cm2/s) (m3/kg) (mg/kg) (ug/m3) 7440-50-8 Copper N NV
7440-66-6 Zinc N NV
11097-69-1 Aroclor-1254 N 4.01E-02 1.16E-02 4.68E-06 7.83E+02 1.31E+05 NV 50-29-3 DDT N 3.79E-02 3.40E-04 4.43E-06 1.01E+03 1.69E+05 NV 83-32-9 Acenaphthene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 208-96-8 Acenaphthylene N 5.06E-02 7.52E-03 8.33E-06 3.02E+01 5.03E+03 NV 120-12-7 Anthracene N 3.90E-02 2.27E-03 7.85E-06 9.82E+01 1.64E+04 NV 56-55-3 Benz[a]anthracene N 5.09E-02 4.91E-04 5.94E-06 1.06E+03 1.77E+05 NV 50-32-8 Benzo[a]pyrene N 4.76E-02 1.87E-05 5.56E-06 3.52E+03 5.87E+05 NV 205-99-2 Benzo[b]fluoranthene N 4.76E-02 2.69E-05 5.56E-06 3.60E+03 5.99E+05 NV 191-24-2 Benzo(g,h,i)perylene N 5.28E-02 9.65E-08 6.17E-06 1.35E+00 2.25E+02 NV 207-08-9 Benzo[k]fluoranthene N 4.76E-02 2.39E-05 5.56E-06 3.52E+03 5.87E+05 NV 218-01-9 Chrysene N 2.61E-02 2.14E-04 6.75E-06 1.08E+03 1.81E+05 NV 206-44-0 Fluoranthene N 2.76E-02 3.62E-04 7.18E-06 3.33E+02 5.55E+04 NV 86-73-7 Fluorene N 4.40E-02 3.93E-03 7.89E-06 5.50E+01 9.16E+03 NV 85-01-8 Phenanthrene N 2.08E-02 5.81E-12 5.19E-06 5.56E+01 9.27E+03 NV 129-00-0 Pyrene N 2.78E-02 4.87E-04 7.25E-06 3.26E+02 5.43E+04 NV 71-55-6 1,1,1-Trichloroethane Y 6.48E-02 7.03E-01 9.60E-06 2.63E-01 4.39E+01 1.0E-02 136 0.000525 3.9E-03 526-73-8 1,2,3-Trimethylbenzene Y 6.13E-02 1.78E-01 8.02E-06 3.76E+00 6.27E+02 2.8E-04 826 0.00125 1.5E-03 95-63-6 1,2,4-Trimethylbenzene Y 6.07E-02 2.52E-01 7.92E-06 3.69E+00 6.14E+02 3.9E-04 693 0.00303 4.4E-03 78-93-3 Methyl Ethyl Ketone (2-Butanone) Y 9.14E-02 2.33E-03 1.02E-05 2.71E-02 4.51E+00 3.4E-04 741 0.0455 6.1E-02 67-64-1 Acetone Y 1.06E-01 1.43E-03 1.15E-05 1.42E-02 2.36E+00 3.1E-04 777 0.15 1.9E-01 71-43-2 Benzene Y 8.95E-02 2.27E-01 1.03E-05 8.75E-01 1.46E+02 2.1E-03 302 0.000725 2.4E-03 67-66-3 Chloroform Y 7.69E-02 1.50E-01 1.09E-05 1.91E-01 3.18E+01 4.4E-03 206 0.019 9.2E-02 156-59-2 cis-1,2-Dichloroethylene Y 8.84E-02 1.67E-01 1.13E-05 2.38E-01 3.96E+01 4.7E-03 200 0.00153 7.7E-03 1634-04-4 Methyl tert-Butyl Ether (MTBE) Y 7.53E-02 2.40E-02 8.59E-06 6.94E-02 1.16E+01 1.6E-03 339 0.000675 2.0E-03 75-09-2 Methylene Chloride Y 9.99E-02 1.33E-01 1.25E-05 1.30E-01 2.17E+01 6.8E-03 166 0.00953 5.7E-02 127-18-4 Tetrachloroethylene Y 5.05E-02 7.24E-01 9.46E-06 5.70E-01 9.49E+01 4.8E-03 199 1.26 6.3E+00 156-60-5 trans-1,2-Dichloroethylene Y 8.76E-02 1.67E-01 1.12E-05 2.38E-01 3.96E+01 4.7E-03 201 0.0018 9.0E-03 79-01-6 Trichloroethylene Y 6.87E-02 4.03E-01 1.02E-05 3.64E-01 6.07E+01 5.7E-03 183 8.83 4.8E+01 Q/C / inverse of the mean concentration at the center of a 0.5-acre-square source

CASRN COPC
Haley & Aldrich, Inc.

G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0426_Soil - Template-EPA-non-M-V11_construction_B29_95ucl.xlsx, VF July 2022 Calculation of Q/C During Construction
Building 29 Exposure Area
Sources: EPA, 1996. Soil Screening Guidance: Technical Background Document. May.

EPA, 2001. Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites. Peer Review Draft. March.

Q/C = A x exp [(ln Asite - B)2 / C]
Where:

2.4538 17.566 189.0426 9.5 8.49

APPENDIX E
Risk Calculations – Development of Health-Based Remediation Goals Building 29 Exposure Area
Soil Vapor
TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDINGS 29, 99, AND 100
USING SOIL VAPOR HEALTH‐BASED REMEDIATION GOAL CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B99‐V01Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 80 0.03 2.4 na 3900 na 6E‐04
B99‐V01 0E+00 6E‐04
Sample ID: B99‐V02
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 61 0.03 1.83 na 3900 na 5E‐04
B99‐V02 0E+00 5E‐04
Sample ID: B99‐V03
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 64 0.03 1.92 na 3900 na 5E‐04
B99‐V03 0E+00 5E‐04
Sample ID: B99‐V04
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
No VOCs Detected
B99‐V04 0E+00 0E+00

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0422_VI_Calculations_DataGap_rem_01‐abb.xlsx JULY 2022 TABLE 1
VAPOR INTRUSION EVALUATION ‐ CANCER AND NON‐CANCER RISK EVALUATION ROHR ‐ BUILDINGS 29, 99, AND 100
USING SOIL VAPOR HEALTH‐BASED REMEDIATION GOAL CONCENTRATIONS

CHULA VISTA, CALIFORNIA
Sample ID: B99‐V05Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 82 0.03 2.46 na 3900 na 6E‐04Trichloroethene 32 0.03 0.96 3 8.8 3E‐07 1E‐01 B99‐V05 3E‐07 1E‐01
Sample ID: B99‐V06Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 63 0.03 1.89 na 3900 na 5E‐04
B99‐V06 0E+00 5E‐04
Sample ID: B100‐V01
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Trichloroethene 30 0.03 0.9 3 8.8 3E‐07 1E‐01
B100‐V01 3E‐07 1E‐01
Sample ID: B100‐V02
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 69 0.03 2.07 na 3900 na 5E‐04
B100‐V02 0E+00 5E‐04

CHULA VISTA, CALIFORNIA
Sample ID: B100‐V03
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
No VOCs Detected
B100‐V03 0E+00 0E+00
Sample ID: B29‐V04
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 210 0.03 6.3 2 180 3E‐06 4E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
B29‐V04 7E‐06 1E+00
Sample ID: B29‐V05
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 46 0.03 1.38 na 4400 na 3E‐04
Benzene 27 0.03 0.81 0.42 13 2E‐06 6E‐02
Ethylbenzene 47 0.03 1.41 4.9 4400 3E‐07 3E‐04
m,p‐Xylenes 190 0.03 5.7 na 440 na 1E‐02
o‐Xylene 53 0.03 1.59 na 440 na 4E‐03
Tetrachloroethene 220 0.03 6.6 2 180 3E‐06 4E‐02
Toluene 180 0.03 5.4 na 1300 na 4E‐03
B29‐V05 6E‐06 1E‐01

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V06Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 110 0.03 3.3 na 3900 na 8E‐04Toluene 44 0.03 1.32 na 1300 na 1E‐03 B29‐V06 0E+00 2E‐03
Sample ID: B29‐V07
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 m,p‐Xylenes 88 0.03 2.64 na 440 na 6E‐03
o‐Xylene 31 0.03 0.93 na 440 na 2E‐03
Tetrachloroethene 370 0.03 11.1 2 180 6E‐06 6E‐02
Toluene 46 0.03 1.38 na 1300 na 1E‐03Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 B29‐V07 1E‐05 1E+00
Sample ID: B29‐V08
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 52 0.03 1.56 na 3900 na 4E‐04Tetrachloroethene 80 0.03 2.4 2 180 1E‐06 1E‐02 Trichloroethene 130 0.03 3.9 3 8.8 1E‐06 4E‐01
B29‐V08 3E‐06 5E‐01

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V09Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 110 0.03 3.3 na 4400 na 8E‐04
Chloroform (Trichloromethane) 170 0.03 5.1 0.53 430 1E‐05 1E‐02 Styrene 52 0.03 1.56 na 3900 na 4E‐04Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 B29‐V09 1E‐05 1E+00
Sample ID: B29‐V10Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 92 0.03 2.76 na 3900 na 7E‐04Trichloroethene 120 0.03 3.6 3 8.8 1E‐06 4E‐01 B29‐V10 1E‐06 4E‐01
Sample ID: B29‐V11Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 66 0.03 1.98 na 3900 na 5E‐04
B29‐V11 0E+00 5E‐04
Sample ID: B29‐V12
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 53 0.03 1.59 na 3900 na 4E‐04
B29‐V12 0E+00 4E‐04

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V13Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 74 0.03 2.22 na 3900 na 6E‐04
B29‐V13 0E+00 6E‐04
Sample ID: B29‐V14
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 46 0.03 1.38 na 4400 na 3E‐04
Styrene 65 0.03 1.95 na 3900 na 5E‐04
B29‐V14 0E+00 8E‐04
Sample ID: B29‐V15Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 64 0.03 1.92 na 3900 na 5E‐04Trichlorofluoromethane (CFC‐11) 60 0.03 1.8 na 5300 na 3E‐04 B29‐V15 0E+00 8E‐04
Sample ID: B29‐V16Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 790 0.03 23.7 na 4400 na 5E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 320 0.03 9.6 na 22000 na 4E‐04 Tetrachloroethene 340 0.03 10.2 2 180 5E‐06 6E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
B29‐V16 9E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: B29‐V17Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 110 0.03 3.3 na 3900 na 8E‐04Trichloroethene 43 0.03 1.29 3 8.8 4E‐07 1E‐01 B29‐V17 4E‐07 1E‐01
Sample ID: B29‐V18Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Styrene 62 0.03 1.86 na 3900 na 5E‐04Tetrachloroethene 57 0.03 1.71 2 180 9E‐07 1E‐02 Trichloroethene 42 0.03 1.26 3 8.8 4E‐07 1E‐01
B29‐V18 1E‐06 2E‐01
Sample ID: B29‐V19Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 480 0.03 14.4 na 4400 na 3E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 1900 0.03 57 na 22000 na 3E‐03 1,1‐Dichloroethane 53 0.03 1.59 7.7 3500 2E‐07 5E‐04cis‐1,2‐Dichloroethene 100 0.03 3 na 35 na 9E‐02 Styrene 99 0.03 2.97 na 3900 na 8E‐04trans‐1,2‐Dichloroethene 150 0.03 4.5 na 350 na 1E‐02 Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
B29‐V19 4E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: PW01B‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 610 0.03 18.3 na 260 na 7E‐02
1,3,5‐Trimethylbenzene 220 0.03 6.6 na 260 na 3E‐02
4‐Ethyltoluene 130 0.03 3.9 na na na na
4‐Isopropyltoluene 79 0.03 2.37 na na na na
Ethylbenzene 150 0.03 4.5 4.9 4400 9E‐07 1E‐03
m,p‐Xylenes 670 0.03 20.1 na 440 na 5E‐02
n‐Propylbenzene 80 0.03 2.4 na 4400 na 5E‐04
o‐Xylene 240 0.03 7.2 na 440 na 2E‐02
Toluene 230 0.03 6.9 na 1300 na 5E‐03Trichloroethene 140 0.03 4.2 3 8.8 1E‐06 5E‐01 PW01B‐SV‐5 2E‐06 6E‐01
Sample ID: PW06‐SV‐3.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 600 0.03 18 na 260 na 7E‐02
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 m,p‐Xylenes 1100 0.03 33 na 440 na 8E‐02
Toluene 510 0.03 15.3 na 1300 na 1E‐02Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 PW06‐SV‐3.5 8E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: PW07‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 38 0.03 1.14 na 4400 na 3E‐04
1,2,4‐Trimethylbenzene 120 0.03 3.6 na 260 na 1E‐02
1,3,5‐Trimethylbenzene 48 0.03 1.44 na 260 na 6E‐03
4‐Ethyltoluene 22 0.03 0.66 na na na na
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 Ethylbenzene 28 0.03 0.84 4.9 4400 2E‐07 2E‐04
m,p‐Xylenes 130 0.03 3.9 na 440 na 9E‐03
o‐Xylene 40 0.03 1.2 na 440 na 3E‐03
Tetrachloroethene 330 0.03 9.9 2 180 5E‐06 6E‐02
Toluene 51 0.03 1.53 na 1300 na 1E‐03Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 PW07‐SV‐4 1E‐05 1E+00
Sample ID: PW08‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 530 0.03 15.9 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 270 0.03 8.1 na 260 na 3E‐02
4‐Ethyltoluene 160 0.03 4.8 na na na na
4‐Isopropyltoluene 80 0.03 2.4 na na na na
Benzene 75 0.03 2.25 0.42 13 5E‐06 2E‐01
Chloroform (Trichloromethane) 32 0.03 0.96 0.53 430 2E‐06 2E‐03 Ethylbenzene 340 0.03 10.2 4.9 4400 2E‐06 2E‐03
Isopropylbenzene 33 0.03 0.99 na 1800 na 6E‐04m,p‐Xylenes 1300 0.03 39 na 440 na 9E‐02 n‐Propylbenzene 120 0.03 3.6 na 4400 na 8E‐04
o‐Xylene 360 0.03 10.8 na 440 na 2E‐02
Tetrachloroethene 96 0.03 2.88 2 180 1E‐06 2E‐02
Toluene 670 0.03 20.1 na 1300 na 2E‐02Trichloroethene 54 0.03 1.62 3 8.8 5E‐07 2E‐01 PW08‐SV‐5 1E‐05 6E‐01

CHULA VISTA, CALIFORNIA
Sample ID: PW09‐SV‐4.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 120 0.03 3.6 na 4400 na 8E‐04
1,2,4‐Trimethylbenzene 140 0.03 4.2 na 260 na 2E‐02
Bromodichloromethane 70 0.03 2.1 0.33 350 6E‐06 6E‐03
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 m,p‐Xylenes 200 0.03 6 na 440 na 1E‐02
Toluene 150 0.03 4.5 na 1300 na 3E‐03Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 PW09‐SV‐4.5 1E‐05 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: PW11‐SV‐3
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 5.6 0.03 0.168 na 22000 na 8E‐06 1,2,4‐Trimethylbenzene 110 0.03 3.3 na 260 na 1E‐02
1,3,5‐Trimethylbenzene 67 0.03 2.01 na 260 na 8E‐03
4‐Ethyltoluene 29 0.03 0.87 na na na na
4‐Isopropyltoluene 8.8 0.03 0.264 na na na na
Acetone 51 0.03 1.53 na 140000 na 1E‐05
Benzene 10 0.03 0.3 0.42 13 7E‐07 2E‐02
Bromodichloromethane 16 0.03 0.48 0.33 350 1E‐06 1E‐03
Chloroform (Trichloromethane) 14 0.03 0.42 0.53 430 8E‐07 1E‐03 Dibromochloromethane 12 0.03 0.36 0.58 350 6E‐07 1E‐03
Ethylbenzene 50 0.03 1.5 4.9 4400 3E‐07 3E‐04Heptane 4.9 0.03 0.147 na 1800 na 8E‐05Isobutane 5.1 0.03 0.153 na na na naIsopropylbenzene 5.9 0.03 0.177 na 1800 na 1E‐04m,p‐Xylenes 160 0.03 4.8 na 440 na 1E‐02 n‐Hexane 5.9 0.03 0.177 na 3100 na 6E‐05
n‐Propylbenzene 19 0.03 0.57 na 4400 na 1E‐04
o‐Xylene 70 0.03 2.1 na 440 na 5E‐03
Propylene 7.5 0.03 0.225 na 13000 na 2E‐05Styrene 14 0.03 0.42 na 3900 na 1E‐04Tetrachloroethene 16 0.03 0.48 2 180 2E‐07 3E‐03 Toluene 89 0.03 2.67 na 1300 na 2E‐03Trichloroethene 5.9 0.03 0.177 3 8.8 6E‐08 2E‐02 PW11‐SV‐3 4E‐06 9E‐02

CHULA VISTA, CALIFORNIA
Sample ID: PW12‐SV‐3
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,2,4‐Trimethylbenzene 400 0.03 12 na 260 na 5E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
2,2,4‐Trimethylpentane 12 0.03 0.36 na na na na
4‐Ethyltoluene 110 0.03 3.3 na na na na
4‐Isopropyltoluene 63 0.03 1.89 na na na na
Acetone 59 0.03 1.77 na 140000 na 1E‐05
Benzene 36 0.03 1.08 0.42 13 3E‐06 8E‐02
Bromodichloromethane 17 0.03 0.51 0.33 350 2E‐06 1E‐03
Chloroform (Trichloromethane) 20 0.03 0.6 0.53 430 1E‐06 1E‐03 Cyclohexane 3.6 0.03 0.108 na 26000 na 4E‐06Dibromochloromethane 9.5 0.03 0.285 0.58 350 5E‐07 8E‐04 Ethylbenzene 150 0.03 4.5 4.9 4400 9E‐07 1E‐03
Heptane 12 0.03 0.36 na 1800 na 2E‐04Isopropylbenzene 20 0.03 0.6 na 1800 na 3E‐04m,p‐Xylenes 710 0.03 21.3 na 440 na 5E‐02 n‐Hexane 11 0.03 0.33 na 3100 na 1E‐04
n‐Propylbenzene 87 0.03 2.61 na 4400 na 6E‐04
o‐Xylene 200 0.03 6 na 440 na 1E‐02
Propylene 30 0.03 0.9 na 13000 na 7E‐05sec‐Butylbenzene 8.1 0.03 0.243 na 1800 na 1E‐04 Styrene 19 0.03 0.57 na 3900 na 1E‐04Tetrachloroethene 370 0.03 11.1 2 180 6E‐06 6E‐02 Toluene 350 0.03 10.5 na 1300 na 8E‐03Trichloroethene 35 0.03 1.05 3 8.8 4E‐07 1E‐01 PW12‐SV‐3 1E‐05 4E‐01

CHULA VISTA, CALIFORNIA
Sample ID: PW13‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 12 0.03 0.36 na 4400 na 8E‐05
1,2,4‐Trimethylbenzene 500 0.03 15 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
2,2,4‐Trimethylpentane 3.9 0.03 0.117 na na na na
4‐Ethyltoluene 94 0.03 2.82 na na na na
4‐Isopropyltoluene 53 0.03 1.59 na na na na
Acetone 43 0.03 1.29 na 140000 na 9E‐06
Benzene 8 0.03 0.24 0.42 13 6E‐07 2E‐02
Benzyl chloride 9.8 0.03 0.294 0.25 4.4 1E‐06 7E‐02
Chloroform (Trichloromethane) 26 0.03 0.78 0.53 430 1E‐06 2E‐03 cis‐1,2‐Dichloroethene 3.8 0.03 0.114 na 35 na 3E‐03Dichlorodifluoromethane (R12) 17 0.03 0.51 na 440 na 1E‐03 Ethylbenzene 81 0.03 2.43 4.9 4400 5E‐07 6E‐04
Heptane 4.2 0.03 0.126 na 1800 na 7E‐05Isopropylbenzene 11 0.03 0.33 na 1800 na 2E‐04m,p‐Xylenes 400 0.03 12 na 440 na 3E‐02 n‐Hexane 3.6 0.03 0.108 na 3100 na 3E‐05
n‐Propylbenzene 59 0.03 1.77 na 4400 na 4E‐04
o‐Xylene 140 0.03 4.2 na 440 na 1E‐02
Tetrachloroethene 4.7 0.03 0.141 2 180 7E‐08 8E‐04
Toluene 98 0.03 2.94 na 1300 na 2E‐03Trichloroethene 91 0.03 2.73 3 8.8 9E‐07 3E‐01 Trichlorofluoromethane (CFC‐11) 94 0.03 2.82 na 5300 na 5E‐04 PW13‐SV‐4 5E‐06 5E‐01

CHULA VISTA, CALIFORNIA
Sample ID: PW14‐SV‐4
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
cis‐1,2‐Dichloroethene 100 0.03 3 na 35 na 9E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
PW14‐SV‐4 4E‐06 1E+00
Sample ID: PW14‐SV‐4DUP
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
cis‐1,2‐Dichloroethene 100 0.03 3 na 35 na 9E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
PW14‐SV‐4DUP 4E‐06 1E+00
Sample ID: PW15‐SV‐4.5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 1100 0.03 33 na 4400 na 8E‐03
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 740 0.03 22.2 na 22000 na 1E‐03 Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
PW15‐SV‐4.5 4E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: PW16‐SV‐5
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 35 0.03 1.05 na 4400 na 2E‐04
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 72 0.03 2.16 na 22000 na 1E‐04 1,2,4‐Trimethylbenzene 490 0.03 14.7 na 260 na 6E‐02
1,3,5‐Trimethylbenzene 180 0.03 5.4 na 260 na 2E‐02
4‐Ethyltoluene 55 0.03 1.65 na na na na
4‐Isopropyltoluene 27 0.03 0.81 na na na na
Benzene 7.6 0.03 0.228 0.42 13 5E‐07 2E‐02
Chloroform (Trichloromethane) 5.8 0.03 0.174 0.53 430 3E‐07 4E‐04 Ethylbenzene 61 0.03 1.83 4.9 4400 4E‐07 4E‐04
Isopropylbenzene 7.7 0.03 0.231 na 1800 na 1E‐04m,p‐Xylenes 310 0.03 9.3 na 440 na 2E‐02 Naphthalene 6.3 0.03 0.189 0.36 13 5E‐07 1E‐02
n‐Propylbenzene 36 0.03 1.08 na 4400 na 2E‐04
o‐Xylene 99 0.03 2.97 na 440 na 7E‐03
sec‐Butylbenzene 4.5 0.03 0.135 na 1800 na 8E‐05
Styrene 10 0.03 0.3 na 3900 na 8E‐05Tetrachloroethene 16 0.03 0.48 2 180 2E‐07 3E‐03 Toluene 120 0.03 3.6 na 1300 na 3E‐03Trichloroethene 25 0.03 0.75 3 8.8 3E‐07 9E‐02 Trichlorofluoromethane (CFC‐11) 6.7 0.03 0.201 na 5300 na 4E‐05 PW16‐SV‐5 2E‐06 2E‐01
Sample ID: DGA‐003‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 160 0.03 4.8 na 22000 na 2E‐04 Benzene 20 0.03 0.6 0.42 13 1E‐06 5E‐02
Trichloroethene 260 0.03 7.8 3 8.8 3E‐06 9E‐01
DGA‐003‐2‐SG 4E‐06 9E‐01

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐004‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 2000 0.03 60 na 4400 na 1E‐02
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 1600 0.03 48 na 22000 na 2E‐03 1,1‐Dichloroethane 430 0.03 12.9 7.7 3500 2E‐06 4E‐03Benzene 24 0.03 0.72 0.42 13 2E‐06 6E‐02 Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 cis‐1,2‐Dichloroethene 100 0.03 3 na 35 na 9E‐02
Tetrachloroethene 100 0.03 3 2 180 2E‐06 2E‐02
trans‐1,2‐Dichloroethene 340 0.03 10.2 na 350 na 3E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐004‐1‐SG 1E‐05 1E+00
Sample ID: DGA‐007‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 3300 0.03 99 na 4400 na 2E‐02
1,1,2‐Trichloro‐1,2,2‐trifluoroethane (R113) 2600 0.03 78 na 22000 na 4E‐03 1,1‐Dichloroethene 150 0.03 4.5 na 310 na 1E‐02
Benzene 36 0.03 1.08 0.42 13 3E‐06 8E‐02
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 Tetrachloroethene 20 0.03 0.6 2 180 3E‐07 3E‐03
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐007‐2‐SG 1E‐05 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐008‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1‐Difluoroethane 110 0.03 3.3 na 180000 na 2E‐05
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐008‐2‐SG 4E‐06 1E+00
Sample ID: DGA‐009‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1‐Dichloroethane 120 0.03 3.6 7.7 3500 5E‐07 1E‐03Benzene 34 0.03 1.02 0.42 13 2E‐06 8E‐02 cis‐1,2‐Dichloroethene 100 0.03 3 na 35 na 9E‐02
Tetrachloroethene 66 0.03 1.98 2 180 1E‐06 1E‐02
trans‐1,2‐Dichloroethene 470 0.03 14.1 na 350 na 4E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
Vinyl chloride 36 0.03 1.08 0.16 440 7E‐06 2E‐03
DGA‐009‐2‐SG 1E‐05 1E+00
Sample ID: DGA‐011‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 35 0.03 1.05 2 180 5E‐07 6E‐03
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐011‐2‐SG 4E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐016‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 56 0.03 1.68 0.42 13 4E‐06 1E‐01
Chloroform (Trichloromethane) 61 0.03 1.83 0.53 430 3E‐06 4E‐03 Toluene 200 0.03 6 na 1300 na 5E‐03Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00 DGA‐016‐2‐SG 1E‐05 1E+00
Sample ID: DGA‐017‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
1,1,1‐Trichloroethane 150 0.03 4.5 na 4400 na 1E‐03
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐017‐1‐SG 8E‐06 1E+00
Sample ID: DGA‐019‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Co+F505mmercial/Industrial
Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 26 0.03 0.78 0.42 13 2E‐06 6E‐02
Chloroform (Trichloromethane) 30 0.03 0.9 0.53 430 2E‐06 2E‐03 Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐019‐2‐SG 7E‐06 1E+00

CHULA VISTA, CALIFORNIA
Sample ID: DGA‐021‐1‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Tetrachloroethene 370 0.03 11.1 2 180 6E‐06 6E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐021‐1‐SG 9E‐06 1E+00
Sample ID: DGA‐022‐2‐SG
Chemical Name
Soil Vapor
Concentration
Default
Attenuation
Factor
Estimated Indoor Air
Concentration Using
Default AF = 0.03
Carcinogenic Screening Level
for Commercial/Industrial
Air
Non‐Carcinogenic
Screening Level for
Commercial/Industrial Air
Incremental
Lifetime Cancer
Risk Hazard Index
ug/m3 0.03 ug/m3 ug/m3 ug/m3
Benzene 30 0.03 0.9 0.42 13 2E‐06 7E‐02
Chloroform (Trichloromethane) 80 0.03 2.4 0.53 430 5E‐06 6E‐03 Tetrachloroethene 98 0.03 2.94 2 180 1E‐06 2E‐02
Trichloroethene 350 0.03 10.5 3 8.8 4E‐06 1E+00
DGA‐022‐2‐SG 1E‐05 1E+00
Health‐based Remediation Goals

HALEY & ALDRICH, INC,
G:\127827_North Campus\019_Parcel A HHRA and Soil RAP\Calculations\HHRA\2022_04_Data_Gap_update\2022_0422_VI_Calculations_DataGap_rem_01‐abb.xlsx JULY 2022 Building 29 Exposure Area
Planned Loading Dock Excavation Area
Construction Worker

Page 1 of 6 ends

Chula Vista City CouncilNovember 18, 2025

Chula Vista City Council
November 18, 2025