Page A-1 

Technical Support Document for U.S. EPA’s Proposed Rule for Addition of a 

Subsurface Intrusion Component to the Hazard Ranking System

Appendix A: Inventory of Subsurface Intrusion Sites

Page A-3: Summary of Vapor Intrusion Site Source Descriptions

Page A-4: Vapor Intrusion Site Inventory – Tier 1

Page A-5: Vapor Intrusion Site Inventory – Tier 2

Page A-8: Vapor Intrusion Site Inventory – Tier 3

Page A-14: Vapor Intrusion Site Inventory – Tier 4
Page A-2

Inventory of Subsurface Intrusion Sites

In support of identifying the need for the development of the proposed Hazard Ranking System (HRS) Subsurface 

Intrusion (SsI) Addition, sites that may pose a potential subsurface intrusion threat were identified and classified 

into an inventory, to determine the scope of the SsI threat. The SsI inventory contains sites with known or 

potential threats posed by subsurface intrusion of contaminants. This list is comprised of sites that are not 

presently on the National Priorities List (NPL), were not originally screened for subsurface intrusion issues, and 

are not excluded statutorily under the Comprehensive Environmental Response, Compensation, and Liability Act 

(CERCLA) or by agency policy. The sites contained within the inventory were obtained from a variety of sources 

including Superfund Enterprise Management System (SEMS) keyword searches

1

, Agency for Toxic Substance 

and Disease Registry (ATSDR) database searches, the U.S. Environmental Protection Agency (EPA) Regional 

Site Inspection list, EPA Removal list, EPA Office of Land and Emergency Management (OLEM) 2 Vapor 

Intrusion (VI) database, state lists, and EPA Regional Office lists. Sources of sites included in the inventory are 

further outlined in Table A-1 of this appendix. 

Compiled VI sites were ranked using a tiering methodology based on the actual or potential threat posed by VI at 

the site and available information. Definitions of the tiers used to evaluate VI sites are explained in further detail 

in Section 1.3.b.ii of the proposal TSD. Tables A-1 – A-4 of this appendix identify the VI sites by their assigned 

tier.

 1 On January 31, 2014, the EPA decommissioned the Comprehensive Environmental, Response, Compensation and Liability 

Information System (CERCLIS) in favor of a new site inventory the Superfund Enterprise Management System (SEMS). 2 In December 2015, the name of EPA’s Office of Solid Waste and Emergency Response (OSWER) was changed to the 

Office of Land and Emergency Management.
Page A-3 

Table A-1 

Summary of Vapor Intrusion Site Source Descriptions

List Name Source Contents Date 

ATSDR ATSDR Database List developed using keyword search for "vapor." Search conducted in April 2011

Removal List EPA Emergency 

Response Team (ERT)

List of sites where "vapor intrusion issues may have been 

identified." 

List prepared in March 2011

376 List CERCLIS Keyword search in site description field for "vapor." Search conducted in March 2011

185 List CERCLIS Keyword search in decision rationale field for "vapor." Search conducted in March 2011

Regional List EPA Regions 01, 02, 

03, 04, 05, 06, 07, 08, 

09 and 10

Specific sites with known vapor intrusion issues, vapor 

intrusion assessment data, known ground water and/or soil 

gas contamination and/or suspected vapor intrusion issues. 

Lists received from March to 

November 2011

Regional SI 

Report

EPA Regions 03, 04, 

05, 06 and 08

54 sites with site inspection (SI) or other analytical data. May to November 2011

State List Virginia Department of 

Environmental Quality

No specific sites identified March 2011

State List Wisconsin Department 

of Natural Resources

No specific sites identified March 2011

State List Maryland Department 

of Environment

Draft Indoor Air Site Initiative Report (August 2010); 

Supplemental information on 25 sites 

November 2011

State List Utah Department of 

Environmental Quality

Four sites with vapor intrusion sampling and known impacts 

and 10 sites with known ground water plumes underlying 

residential structures but no vapor intrusion sampling 

conducted to date 

March 2011

State List Colorado Department of 

Public Health and the 

Environment

Nine sites with vapor intrusion assessments and 8 sites with 

known ground water plumes underlying residential structures 

but no vapor intrusion sampling conducted to date.

March 2011

State List New York Department 

of Environmental 

Conservation

Status of Vapor Intrusion Evaluations at Legacy Sites as of 

August 2011 available at 

http://www.dec.ny.gov/regulations/51715.html.

Accessed August to November 

2011

VI Database EPA OSWER Vapor 

Intrusion Database

http://www.epa.gov/vaporintrusion/vapor-intrusion-database Accessed May 2011

Please note that the classification of sites as a “Federal Facility” or as a “Formerly Used Defense Site (FUDS)” 

below in Tables A-2 through A-5 was determined based on the information received. 
Page A-4

Table A-2

Vapor Intrusion Site Inventory – Tier 1

Tier 1 is defined as sites having a subsurface intrusion threat with documented actual exposure of a sufficient 

number of targets, with enough other HRS-required evaluation factors to suggest the site may qualify for the NPL. Site No. ATSDR Removal List 376 List 185 List Regional List Regional SI Report State List VI Database Federal Facility FUDS EPA Region

State

Tier

0001  03 District of 

Columbia 1

0002 03 District of 

Columbia 1

0003 03 Maryland 1

0004  03 Maryland 1

0005  03 Maryland 1

0006   03 Pennsylvania 1

0007   05 Minnesota 1

0008  05 Wisconsin 1

0009   06 Texas 1

0010 07 Missouri 1

0011    08 Montana 1
Page A-5

Table A-3

Vapor Intrusion Site Inventory – Tier 2

Tier 2 is defined as sites having a subsurface intrusion threat documented by subslab, crawl space, or indoor air 

samples, but insufficient HRS-required evaluation factors to qualify for the NPL. Site No. ATSDR Removal List 376 List 185 List Regional List Regional SI Report State List VI Database Federal Facility FUDS EPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0012  01 Connecticut 2 0051  02 New York 2

0013  01 Connecticut 2 0052  02 New York 2

0014  01 Connecticut 2 0053  02 New York 2

0015   01 Connecticut 2 0054  02 New York 2

0016  01 Connecticut 2 0055  02 New York 2

0017  01 Connecticut 2 0056  02 New York 2

0018  01 Massachusetts 2 0057  02 New York 2

0019  01 New Hampshire 2 0058  02 New York 2

0020  01 Not Specified 2 0059  02 New York 2

0021  01 Not Specified 2 0060  02 New York 2

0022  01 Not Specified 2 0061  02 New York 2

0023   02 New Jersey 2 0062  02 New York 2

0024   02 New Jersey 2 0063  02 New York 2

0025  02 New Jersey 2 0064  02 New York 2

0026  02 New York 2 0065  02 New York 2

0027   02 New York 2 0066  02 New York 2

0028   02 New York 2 0067  02 New York 2

0029   02 New York 2 0068  02 New York 2

0030  02 New York 2 0069  02 New York 2

0031  02 New York 2 0070  02 New York 2

0032   02 New York 2 0071  02 New York 2

0033   02 New York 2 0072  02 New York 2

0034  02 New York 2 0073  02 New York 2

0035  02 New York 2 0074  02 New York 2

0036   02 New York 2 0075  02 New York 2

0037  02 New York 2 0076  02 New York 2

0038  02 New York 2 0077  02 New York 2

0039  02 New York 2 0078  02 New York 2

0040   02 New York 2 0079  02 New York 2

0041  02 New York 2 0080  02 New York 2

0042  02 New York 2 0081  02 New York 2

0043  02 New York 2 0082  02 New York 2

0044  02 New York 2 0083  02 New York 2

0045  02 New York 2 0084  02 New York 2

0046  02 New York 2 0085  02 New York 2

0047  02 New York 2 0086  02 New York 2

0048  02 New York 2 0087  02 New York 2

0049  02 New York 2 0088  02 New York 2

0050  02 New York 2 0089  02 New York 2
Page A-6

Table A-3 (cont.)

Vapor Intrusion Site Inventory – Tier 2

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0090  02 New York 2 0135   03 Pennsylvania 2

0091  02 New York 2 0136  03 Pennsylvania 2

0092  02 New York 2 0137   03 Pennsylvania 2

0093  02 New York 2 0138  03 Pennsylvania 2

0094  02 New York 2 0139  03 Pennsylvania 2

0095  02 New York 2 0140   03 Virginia 2

0096  02 New York 2 0141 03 Virginia 2

0097  02 New York 2 0142  03 Virginia 2

0098  02 New York 2 0143    03 West Virginia 2

0099  02 New York 2 0144  03 West Virginia 2

0100  02 New York 2 0145   04 Alabama 2

0101  02 New York 2 0146  04 Florida 2

0102  02 New York 2 0147  04 Florida 2

0103  02 New York 2 0148   04 Georgia 2

0104  02 New York 2 0149  04 South Carolina 2

0105  02 New York 2 0150  04 Tennessee 2

0106  02 Puerto Rico 2 0151   04 Tennessee 2

0107  03 Maryland 2 0152   04 Tennessee 2

0108  03 Maryland 2 0153  05 Illinois 2

0109  03 Maryland 2 0154  05 Indiana 2

0110  03 Maryland 2 0155    05 Michigan 2

0111  03 Maryland 2 0156  05 Minnesota 2

0112  03 Maryland 2 0157  05 Minnesota 2

0113  03 Maryland 2 0158  05 Ohio 2

0114  03 Maryland 2 0159   05 Ohio 2

0115  03 Maryland 2 0160 05 Ohio 2

0116  03 Maryland 2 0161  05 Wisconsin 2

0117  03 Maryland 2 0162  05 Wisconsin 2

0118  03 Maryland 2 0163  05 Wisconsin 2

0119  03 Maryland 2 0164  05 Wisconsin 2

0120  03 Maryland 2 0165  06 Arkansas 2

0121  03 Maryland 2 0166  06 Arkansas 2

0122  03 Maryland 2 0167    06 Louisiana 2

0123  03 Maryland 2 0168  06 Louisiana 2

0124  03 Maryland 2 0169  06 New Mexico 2

0125  03 Maryland 2 0170  06 New Mexico 2

0126  03 Maryland 2 0171  06 New Mexico 2

0127  03 Maryland 2 0172  06 New Mexico 2

0128  03 Maryland 2 0173 06 Oklahoma 2

0129  03 Maryland 2 0174   06 Oklahoma 2

0130  03 Maryland 2 0175  06 Oklahoma 2

0131  03 Maryland 2 0176  06 Texas 2

0132  03 Maryland 2 0177  06 Texas 2

0133    03 Pennsylvania 2 0178  06 Texas 2

0134  03 Pennsylvania 2 0179    06 Texas 2
Page A-7

Table A-3 (cont.)

Vapor Intrusion Site Inventory – Tier 2

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0180  06 Texas 2 0197    08 Colorado 2

0181  06 Texas 2 0198   08 Colorado 2

0182  06 Texas 2 0199   08 Colorado 2

0183   07 Iowa 2 0200  08 Colorado 2

0184  07 Iowa 2 0201   08 Colorado 2

0185   07 Iowa 2 0202   08 Montana 2

0186  07 Iowa 2 0203  08 North Dakota 2

0187   07 Kansas 2 0204    08 Utah 2

0188   07 Missouri 2 0205    08 Utah 2

0189  07 Nebraska 2 0206  08 Wyoming 2

0190  07 Nebraska 2 0207  09 California 2

0191  07 Nebraska 2 0208  09 California 2

0192  08 Colorado 2 0209  09 California 2

0193   08 Colorado 2 0210  10 Alaska 2

0194   08 Colorado 2 0211  10 Washington 2

0195    08 Colorado 2 0212  10 Washington 2

0196   08 Colorado 2 0213 10 Alaska 2
Page A-8

Table A-4

Vapor Intrusion Site Inventory – Tier 3

Tier 3 is defined as sites having characteristics or evidence that indicate subsurface intrusion (e.g., volatile hazardous 

substance, pollutant, or contaminant in ground water) may have occurred or will occur. Site No. ATSDR Removal List 376 List 185 List Regional List Regional SI Report State List VI Database Federal Facility FUDS EPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0214  01 Connecticut 3 0261  02 New York 3

0215  01 Connecticut 3 0262  02 New York 3

0216  01 Massachusetts 3 0263  02 New York 3

0217  01 Massachusetts 3 0264  02 New York 3

0218  01 Not Specified 3 0265  02 New York 3

0219   02 New Jersey 3 0266  02 New York 3

0220   02 New Jersey 3 0267  02 New York 3

0221   02 New Jersey 3 0268  02 New York 3

0222  02 New Jersey 3 0269  02 New York 3

0223   02 New Jersey 3 0270  02 New York 3

0224   02 New Jersey 3 0271  02 New York 3

0225  02 New Jersey 3 0272  02 New York 3

0226   02 New Jersey 3 0273  02 New York 3

0227  02 New Jersey 3 0274  02 New York 3

0228  02 New York 3 0275  02 New York 3

0229  02 New York 3 0276  02 New York 3

0230   02 New York 3 0277  02 New York 3

0231   02 New York 3 0278  02 New York 3

0232  02 New York 3 0279  02 New York 3

0233  02 New York 3 0280  02 New York 3

0234  02 New York 3 0281  02 New York 3

0235  02 New York 3 0282  02 New York 3

0236  02 New York 3 0283  02 New York 3

0237  02 New York 3 0284  02 New York 3

0238  02 New York 3 0285  02 New York 3

0239  02 New York 3 0286  02 New York 3

0240  02 New York 3 0287  02 New York 3

0241  02 New York 3 0288  02 New York 3

0242  02 New York 3 0289  02 New York 3

0243  02 New York 3 0290  02 New York 3

0244   02 New York 3 0291  02 New York 3

0245  02 New York 3 0292  02 New York 3

0246  02 New York 3 0293  02 New York 3

0247  02 New York 3 0294  02 New York 3

0248   02 New York 3 0295  02 New York 3

0249  02 New York 3 0296  02 New York 3

0250  02 New York 3 0297  02 New York 3

0251  02 New York 3 0298  02 New York 3

0252   02 New York 3 0299  02 New York 3

0253  02 New York 3 0300  02 New York 3

0254  02 New York 3 0301  02 New York 3

0255   02 New York 3 0302  02 New York 3

0256  02 New York 3 0303  02 New York 3

0257  02 New York 3 0304  02 New York 3

0258  02 New York 3 0305  02 New York 3

0259  02 New York 3 0306  02 New York 3

0260  02 New York 3 0307  02 New York 3
Page A-9

Table A-4 (cont.)

Vapor Intrusion Site Inventory – Tier 3

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0308  02 New York 3 0355  02 New York 3

0309  02 New York 3 0356  02 New York 3

0310  02 New York 3 0357  02 New York 3

0311  02 New York 3 0358  02 New York 3

0312  02 New York 3 0359  02 New York 3

0313  02 New York 3 0360  02 New York 3

0314  02 New York 3 0361  02 New York 3

0315  02 New York 3 0362  02 New York 3

0316  02 New York 3 0363  02 New York 3

0317  02 New York 3 0364  02 New York 3

0318  02 New York 3 0365  02 New York 3

0319  02 New York 3 0366  02 New York 3

0320  02 New York 3 0367  02 New York 3

0321  02 New York 3 0368  02 New York 3

0322  02 New York 3 0369  02 New York 3

0323  02 New York 3 0370  02 New York 3

0324  02 New York 3 0371  02 New York 3

0325  02 New York 3 0372  02 New York 3

0326  02 New York 3 0373  02 New York 3

0327  02 New York 3 0374  02 New York 3

0328  02 New York 3 0375  02 New York 3

0329  02 New York 3 0376  02 New York 3

0330  02 New York 3 0377  02 New York 3

0331  02 New York 3 0378  02 New York 3

0332  02 New York 3 0379  02 New York 3

0333  02 New York 3 0380  02 New York 3

0334  02 New York 3 0381  02 New York 3

0335  02 New York 3 0382  02 New York 3

0336  02 New York 3 0383  02 New York 3

0337  02 New York 3 0384  02 New York 3

0338  02 New York 3 0385  02 New York 3

0339  02 New York 3 0386  02 New York 3

0340  02 New York 3 0387  02 New York 3

0341  02 New York 3 0388  02 New York 3

0342  02 New York 3 0389  02 New York 3

0343  02 New York 3 0390  02 New York 3

0344  02 New York 3 0391  02 New York 3

0345  02 New York 3 0392  02 New York 3

0346  02 New York 3 0393  02 New York 3

0347  02 New York 3 0394  02 New York 3

0348  02 New York 3 0395  02 New York 3

0349  02 New York 3 0396  03 Maryland 3

0350  02 New York 3 0397  03 Maryland 3

0351  02 New York 3 0398  03 Maryland 3

0352  02 New York 3 0399  03 Maryland 3

0353  02 New York 3 0400  03 Maryland 3

0354  02 New York 3 0401  03 Maryland 3
Page A-10

Table A-4 (cont.)

Vapor Intrusion Site Inventory – Tier 3

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0402  03 Maryland 3 0449  03 Maryland 3

0403  03 Maryland 3 0450  03 Maryland 3

0404  03 Maryland 3 0451  03 Maryland 3

0405  03 Maryland 3 0452  03 Maryland 3

0406  03 Maryland 3 0453  03 Maryland 3

0407  03 Maryland 3 0454  03 Maryland 3

0408  03 Maryland 3 0455  03 Maryland 3

0409  03 Maryland 3 0456  03 Maryland 3

0410  03 Maryland 3 0457  03 Maryland 3

0411  03 Maryland 3 0458  03 Maryland 3

0412  03 Maryland 3 0459  03 Maryland 3

0413  03 Maryland 3 0460  03 Maryland 3

0414  03 Maryland 3 0461  03 Maryland 3

0415  03 Maryland 3 0462  03 Maryland 3

0416  03 Maryland 3 0463  03 Maryland 3

0417  03 Maryland 3 0464  03 Maryland 3

0418  03 Maryland 3 0465  03 Maryland 3

0419  03 Maryland 3 0466  03 Maryland 3

0420  03 Maryland 3 0467  03 Maryland 3

0421  03 Maryland 3 0468  03 Maryland 3

0422  03 Maryland 3 0469  03 Maryland 3

0423  03 Maryland 3 0470  03 Maryland 3

0424  03 Maryland 3 0471  03 Maryland 3

0425  03 Maryland 3 0472  03 Maryland 3

0426  03 Maryland 3 0473  03 Maryland 3

0427  03 Maryland 3 0474  03 Maryland 3

0428  03 Maryland 3 0475  03 Maryland 3

0429  03 Maryland 3 0476  03 Maryland 3

0430  03 Maryland 3 0477  03 Maryland 3

0431  03 Maryland 3 0478  03 Maryland 3

0432  03 Maryland 3 0479  03 Maryland 3

0433  03 Maryland 3 0480  03 Maryland 3

0434  03 Maryland 3 0481  03 Maryland 3

0435  03 Maryland 3 0482  03 Maryland 3

0436  03 Maryland 3 0483  03 Maryland 3

0437  03 Maryland 3 0484  03 Maryland 3

0438  03 Maryland 3 0485  03 Maryland 3

0439  03 Maryland 3 0486  03 Maryland 3

0440  03 Maryland 3 0487  03 Maryland 3

0441  03 Maryland 3 0488  03 Maryland 3

0442  03 Maryland 3 0489  03 Maryland 3

0443  03 Maryland 3 0490  03 Maryland 3

0444  03 Maryland 3 0491  03 Maryland 3

0445  03 Maryland 3 0492  03 Maryland 3

0446  03 Maryland 3 0493  03 Maryland 3

0447  03 Maryland 3 0494  03 Maryland 3

0448  03 Maryland 3 0495  03 Maryland 3
Page A-11

Table A-4 (cont.)

Vapor Intrusion Site Inventory – Tier 3

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0496  03 Maryland 3 0543   03 Maryland 3

0497  03 Maryland 3 0544   03 Maryland 3

0498  03 Maryland 3 0545     03 Maryland 3

0499  03 Maryland 3 0546  03 Maryland 3

0500  03 Maryland 3 0547  03 Maryland 3

0501  03 Maryland 3 0548  03 Maryland 3

0502  03 Maryland 3 0549  03 Maryland 3

0503  03 Maryland 3 0550  03 Maryland 3

0504  03 Maryland 3 0551  03 Maryland 3

0505  03 Maryland 3 0552  03 Maryland 3

0506  03 Maryland 3 0553  03 Maryland 3

0507  03 Maryland 3 0554  03 Maryland 3

0508  03 Maryland 3 0555  03 Maryland 3

0509  03 Maryland 3 0556  03 Maryland 3

0510  03 Maryland 3 0557  03 Maryland 3

0511  03 Maryland 3 0558  03 Maryland 3

0512  03 Maryland 3 0559  03 Maryland 3

0513  03 Maryland 3 0560  03 Maryland 3

0514  03 Maryland 3 0561  03 Maryland 3

0515   03 Maryland 3 0562  03 Maryland 3

0516  03 Maryland 3 0563    03 Maryland 3

0517  03 Maryland 3 0564  03 Maryland 3

0518  03 Maryland 3 0565   03 Maryland 3

0519  03 Maryland 3 0566   03 Maryland 3

0520  03 Maryland 3 0567  03 Maryland 3

0521  03 Maryland 3 0568  03 Maryland 3

0522  03 Maryland 3 0569  03 Maryland 3

0523  03 Maryland 3 0570  03 Maryland 3

0524  03 Maryland 3 0571    03 Maryland 3

0525  03 Maryland 3 0572  03 Maryland 3

0526  03 Maryland 3 0573  03 Maryland 3

0527  03 Maryland 3 0574 03 Maryland 3

0528  03 Maryland 3 0575  03 Pennsylvania 3

0529  03 Maryland 3 0576  03 Pennsylvania 3

0530  03 Maryland 3 0577  03 Virginia 3

0531  03 Maryland 3 0578  03 Virginia 3

0532  03 Maryland 3 0579   03 Virginia 3

0533  03 Maryland 3 0580  03 Virginia 3

0534  03 Maryland 3 0581  03 Virginia 3

0535   03 Maryland 3 0582  03 Virginia 3

0536  03 Maryland 3 0583  03 Virginia 3

0537  03 Maryland 3 0584   03 West Virginia 3

0538  03 Maryland 3 0585  03 West Virginia 3

0539  03 Maryland 3 0586   03 West Virginia 3

0540  03 Maryland 3 0587   03 West Virginia 3

0541  03 Maryland 3 0588   03 West Virginia 3

0542   03 Maryland 3 0589   04 Alabama 3
Page A-12

Table A-4 (cont.)

Vapor Intrusion Site Inventory – Tier 3

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0590  04 Florida 3 0637  06 New Mexico 3

0591  04 Florida 3 0638   06 Oklahoma 3

0592  04 Florida 3 0639   06 Oklahoma 3

0593   04 Georgia 3 0640   06 Oklahoma 3

0594   04 Kentucky 3 0641   06 Oklahoma 3

0595  04 North Carolina 3 0642   06 Oklahoma 3

0596  04 North Carolina 3 0643  06 Oklahoma 3

0597  04 North Carolina 3 0644  06 Oklahoma 3

0598   04 North Carolina 3 0645  06 Oklahoma 3

0599   04 North Carolina 3 0646  06 Oklahoma 3

0600   04 North Carolina 3 0647  06 Oklahoma 3

0601  04 North Carolina 3 0648  06 Oklahoma 3

0602   04 South Carolina 3 0649  06 Oklahoma 3

0603   04 South Carolina 3 0650  06 Oklahoma 3

0604   04 Tennessee 3 0651  06 Oklahoma 3

0605   04 Tennessee 3 0652  06 Oklahoma 3

0606  05 Illinois 3 0653  06 Oklahoma 3

0607  05 Illinois 3 0654  06 Oklahoma 3

0608  05 Illinois 3 0655  06 Oklahoma 3

0609  05 Illinois 3 0656  06 Oklahoma 3

0610  05 Indiana 3 0657  06 Oklahoma 3

0611  05 Indiana 3 0658  06 Oklahoma 3

0612  05 Indiana 3 0659  06 Oklahoma 3

0613  05 Michigan 3 0660  06 Oklahoma 3

0614   05 Michigan 3 0661  06 Oklahoma 3

0615   05 Michigan 3 0662  06 Oklahoma 3

0616  05 Minnesota 3 0663   06 Texas 3

0617 05 Ohio 3 0664   06 Texas 3

0618  05 Wisconsin 3 0665   06 Texas 3

0619  05 Wisconsin 3 0666   06 Texas 3

0620 05 Wisconsin 3 0667   06 Texas 3

0621 05 Wisconsin 3 0668  06 Texas 3

0622  05 Wisconsin 3 0669  06 Texas 3

0623   05 Wisconsin 3 0670  06 Texas 3

0624    06 Arkansas 3 0671  06 Texas 3

0625   06 Arkansas 3 0672  06 Texas 3

0626  06 Arkansas 3 0673  06 Texas 3

0627  06 Arkansas 3 0674  06 Texas 3

0628   06 Louisiana 3 0675  06 Texas 3

0629  06 Louisiana 3 0676  06 Texas 3

0630  06 Louisiana 3 0677  06 Texas 3

0631   06 New Mexico 3 0678  06 Texas 3

0632   06 New Mexico 3 0679  06 Texas 3

0633   06 New Mexico 3 0680  06 Texas 3

0634   06 New Mexico 3 0681  07 Kansas 3

0635   06 New Mexico 3 0682  07 Nebraska 3

0636   06 New Mexico 3 0683  07 Nebraska 3
Page A-13

Table A-4 (cont.)

Vapor Intrusion Site Inventory – Tier 3

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0684  07 Nebraska 3 0715  08 Utah 3

0685   08 Colorado 3 0716   08 Utah 3

0686  08 Colorado 3 0717   08 Utah 3

0687  08 Colorado 3 0718   08 Utah 3

0688  08 Colorado 3 0719   08 Utah 3

0689  08 Colorado 3 0720   08 Utah 3

0690  08 Colorado 3 0721   08 Utah 3

0691   08 Colorado 3 0722   08 Utah 3

0692    08 Colorado 3 0723   08 Utah 3

0693   08 Colorado 3 0724  08 Utah 3

0694   08 Colorado 3 0725  08 Utah 3

0695    08 Colorado 3 0726  08 Wyoming 3

0696  08 Montana 3 0727  08 Wyoming 3

0697  08 Montana 3 0728  08 Wyoming 3

0698  08 Montana 3 0729  08 Wyoming 3

0699  08 Montana 3 0730   09 Arizona 3

0700  08 North Dakota 3 0731   09 Arizona 3

0701  08 North Dakota 3 0732   09 California 3

0702    08 Utah 3 0733   09 California 3

0703   08 Utah 3 0734   09 California 3

0704  08 Utah 3 0735   09 California 3

0705  08 Utah 3 0736   09 California 3

0706   08 Utah 3 0737   09 California 3

0707   08 Utah 3 0738   09 California 3

0708  08 Utah 3 0739  09 California 3

0709  08 Utah 3 0740   09 California 3

0710  08 Utah 3 0741   09 California 3

0711  08 Utah 3 0742   09 California 3

0712  08 Utah 3 0743 09 California 3

0713  08 Utah 3 0744 9 Oregon 3

0714  08 Utah 3 0745  10 Washington 3
Page A-14

Table A-5

Vapor Intrusion Site Inventory – Tier 4

Tier 4 is defined as sites having a suspected subsurface intrusion threat based on SEMS and ATSDR key word searches, 

and EPA or state self-identification, but for which no sampling data were obtained. Site No. ATSDR Removal List 376 List 185 List Regional List Regional SI Report State List VI Database Federal Facility FUDS EPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0746  01 Connecticut 4 0793   02 New York 4

0747  01 Connecticut 4 0794  02 New York 4

0748  01 Connecticut 4 0795  02 New York 4

0749  01 Connecticut 4 0796  02 New York 4

0750  01 Massachusetts 4 0797  02 New York 4

0751  01 Not Specified 4 0798  02 Not Specified 4

0752  01 Rhode Island 4 0799  02 Not Specified 4

0753  01 Rhode Island 4 0800  02 Puerto Rico 4

0754  01 Vermont 4 0801  02 Puerto Rico 4

0755  02 New Jersey 4 0802  02 Puerto Rico 4

0756  02 New Jersey 4 0803  02 Puerto Rico 4

0757  02 New Jersey 4 0804  02 Puerto Rico 4

0758  02 New Jersey 4 0805  02 Puerto Rico 4

0759  02 New Jersey 4 0806  02 Puerto Rico 4

0760  02 New Jersey 4 0807  02 Puerto Rico 4

0761  02 New Jersey 4 0808  02 Virgin Islands 4

0762  02 New Jersey 4 0809  02 Virgin Islands 4

0763  02 New Jersey 4 0810  02 Virgin Islands 4

0764  02 New Jersey 4 0811  03 Delaware 4

0765  02 New Jersey 4 0812  03 Delaware 4

0766   02 New Jersey 4 0813  03 Delaware 4

0767   02 New Jersey 4 0814  03 Delaware 4

0768  02 New Jersey 4 0815  03 Delaware 4

0769  02 New York 4 0816  03 Delaware 4

0770  02 New York 4 0817  03 Delaware 4

0771  02 New York 4 0818  03 Delaware 4

0772  02 New York 4 0819  03 Delaware 4

0773  02 New York 4 0820  03 Maryland 4

0774  02 New York 4 0821    03 Maryland 4

0775  02 New York 4 0822  03 Maryland 4

0776  02 New York 4 0823  03 Not Specified 4

0777  02 New York 4 0824  03 Not Specified 4

0778  02 New York 4 0825  03 Pennsylvania 4

0779  02 New York 4 0826  03 Pennsylvania 4

0780  02 New York 4 0827  03 Pennsylvania 4

0781  02 New York 4 0828   03 Pennsylvania 4

0782  02 New York 4 0829  03 Pennsylvania 4

0783  02 New York 4 0830  03 Pennsylvania 4

0784  02 New York 4 0831  03 Pennsylvania 4

0785  02 New York 4 0832  03 Pennsylvania 4

0786  02 New York 4 0833  03 Pennsylvania 4

0787  02 New York 4 0834  03 Pennsylvania 4

0788  02 New York 4 0835  03 Pennsylvania 4

0789  02 New York 4 0836  03 Pennsylvania 4

0790  02 New York 4 0837  03 Pennsylvania 4

0791  02 New York 4 0838  03 Pennsylvania 4

0792  02 New York 4 0839  03 Pennsylvania 4
Page A-15

Table A-5 (cont.)

Vapor Intrusion Site Inventory – Tier 4

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0840  03 Pennsylvania 4 0887  05 Indiana 4

0841  03 Pennsylvania 4 0888  05 Indiana 4

0842  03 Pennsylvania 4 0889  05 Indiana 4

0843  03 Pennsylvania 4 0890  05 Michigan 4

0844  03 Pennsylvania 4 0891  05 Michigan 4

0845  03 Pennsylvania 4 0892  05 Michigan 4

0846  03 Pennsylvania 4 0893  05 Michigan 4

0847  03 Pennsylvania 4 0894  05 Michigan 4

0848  03 Pennsylvania 4 0895  05 Minnesota 4

0849  03 Pennsylvania 4 0896  05 Minnesota 4

0850  03 Pennsylvania 4 0897  05 Minnesota 4

0851  03 Pennsylvania 4 0898  05 Not Specified 4

0852  03 Pennsylvania 4 0899  05 Not Specified 4

0853  03 Pennsylvania 4 0900  05 Not Specified 4

0854   03 Pennsylvania 4 0901  05 Not Specified 4

0855  03 Virginia 4 0902  05 Not Specified 4

0856  03 Virginia 4 0903  05 Not Specified 4

0857    03 Virginia 4 0904  05 Not Specified 4

0858  03 West Virginia 4 0905  05 Not Specified 4

0859  03 West Virginia 4 0906  05 Not Specified 4

0860  03 West Virginia 4 0907  05 Not Specified 4

0861  03 West Virginia 4 0908  05 Not Specified 4

0862   04 Alabama 4 0909  05 Not Specified 4

0863   04 Florida 4 0910  05 Not Specified 4

0864   04 Florida 4 0911  05 Not Specified 4

0865   04 Florida 4 0912  05 Ohio 4

0866   04 Florida 4 0913  05 Ohio 4

0867   04 Florida 4 0914  05 Ohio 4

0868   04 Florida 4 0915  05 Ohio 4

0869   04 Florida 4 0916  05 Ohio 4

0870   04 Florida 4 0917  05 Ohio 4

0871   04 Georgia 4 0918  05 Ohio 4

0872  04 North Carolina 4 0919  05 Ohio 4

0873  04 Not Specified 4 0920  05 Ohio 4

0874  04 Not Specified 4 0921  05 Ohio 4

0875  04 Not Specified 4 0922  05 Ohio 4

0876  04 Not Specified 4 0923  05 Ohio 4

0877  04 South Carolina 4 0924  05 Wisconsin 4

0878  04 Tennessee 4 0925  05 Wisconsin 4

0879  04 Tennessee 4 0926  05 Wisconsin 4

0880   04 Wisconsin 4 0927  05 Wisconsin 4

0881  05 Illinois 4 0928  05 Wisconsin 4

0882   05 Illinois 4 0929  05 Wisconsin 4

0883  05 Illinois 4 0930  05 Wisconsin 4

0884  05 Indiana 4 0931  05 Wisconsin 4

0885  05 Indiana 4 0932  05 Wisconsin 4

0886  05 Indiana 4 0933  05 Wisconsin 4
Page A-16

Table A-5 (cont.)

Vapor Intrusion Site Inventory – Tier 4

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

0934   05 Wisconsin 4 0981   07 Kansas 4

0935  06 Arkansas 4 0982  07 Kansas 4

0936  06 Arkansas 4 0983  07 Kansas 4

0937  06 Arkansas 4 0984   07 Kansas 4

0938  06 Louisiana 4 0985  07 Kansas 4

0939  06 New Mexico 4 0986   07 Kansas 4

0940  06 Not Specified 4 0987   07 Kansas 4

0941  06 Not Specified 4 0988  07 Kansas 4

0942  06 Ohio 4 0989  07 Kansas 4

0943  06 Oklahoma 4 0990  07 Missouri 4

0944  06 Oklahoma 4 0991    07 Missouri 4

0945  06 Texas 4 0992   07 Missouri 4

0946  06 Texas 4 0993    07 Missouri 4

0947  06 Texas 4 0994  07 Missouri 4

0948  06 Texas 4 0995  07 Missouri 4

0949  06 Texas 4 0996  07 Missouri 4

0950  06 Texas 4 0997  07 Missouri 4

0951  06 Texas 4 0998  07 Missouri 4

0952  06 Texas 4 0999  07 Missouri 4

0953  06 Texas 4 1000  07 Missouri 4

0954  06 Texas 4 1001  07 Missouri 4

0955  06 Texas 4 1002  07 Missouri 4

0956  06 Texas 4 1003  07 Nebraska 4

0957  06 Texas 4 1004  07 Nebraska 4

0958  07 Iowa 4 1005    07 Nebraska 4

0959  07 Iowa 4 1006  07 Nebraska 4

0960  07 Iowa 4 1007  07 Nebraska 4

0961  07 Iowa 4 1008  07 Nebraska 4

0962  07 Iowa 4 1009  08 Colorado 4

0963  07 Kansas 4 1010  08 Colorado 4

0964  07 Kansas 4 1011  08 Colorado 4

0965  07 Kansas 4 1012  08 Colorado 4

0966  07 Kansas 4 1013  08 Colorado 4

0967   07 Kansas 4 1014  08 Colorado 4

0968   07 Kansas 4 1015  08 Colorado 4

0969  07 Kansas 4 1016  08 Colorado 4

0970  07 Kansas 4 1017  08 Colorado 4

0971   07 Kansas 4 1018  08 Colorado 4

0972  07 Kansas 4 1019  08 Montana 4

0973  07 Kansas 4 1020  08 Montana 4

0974  07 Kansas 4 1021  08 Utah 4

0975  07 Kansas 4 1022  08 Utah 4

0976  07 Kansas 4 1023  08 Utah 4

0977   07 Kansas 4 1024  08 Utah 4

0978  07 Kansas 4 1025  08 Wyoming 4

0979  07 Kansas 4 1026  09 Arizona 4

0980  07 Kansas 4 1027  09 Arizona 4
Page A-17

Table A-5 (cont.)

Vapor Intrusion Site Inventory – Tier 4

Site No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

TierSite No.ATSDRRemoval List376 List185 ListRegional ListRegional SI ReportState ListVI DatabaseFederal FacilityFUDSEPA Region

State

Tier

1028  09 Arizona 4 1051  09 California 4

1029  09 Arizona 4 1052  09 California 4

1030  09 Arizona 4 1053  09 Hawaii 4

1031  09 California 4 1054  09 Not Specified 4

1032  09 California 4 1055  09 Not Specified 4

1033  09 California 4 1056  09 Not Specified 4

1034  09 California 4 1057   10 Alaska 4

1035  09 California 4 1058  10 Alaska 4

1036  09 California 4 1059  10 Idaho 4

1037  09 California 4 1060  10 Not Specified 4

1038  09 California 4 1061  10 Not Specified 4

1039  09 California 4 1062  10 Not Specified 4

1040  09 California 4 1063  10 Not Specified 4

1041  09 California 4 1064  10 Not Specified 4

1042  09 California 4 1065  10 Not Specified 4

1043  09 California 4 1066  10 Oregon 4

1044  09 California 4 1067  10 Washington 4

1045  09 California 4 1068  10 Washington 4

1046  09 California 4 1069  10 Washington 4

1047  09 California 4 1070  10 Washington 4

1048  09 California 4 1071  10 Washington 4

1049  09 California 4 1072  10 Washington 4

1050  09 California 4 1073  10 Washington 4