ADMINISTRATIVE RECORD FOR THE

RACER BUICK CITY FACILITY NORTHEND FLINT, MICHIGAN EPA ID NO: MID005356712

STATEMENT OF BASIS

NO. SEMS ID DATE AUTHOR RECIPIENT TITLE/DESCRIPTION PAGES

1 945193 3/1/00 Boyle, J., U.S. McFarland, W., Administrative Order on Consent 14 EPA General Motors (AOC) Corp.

2 945169 11/26/00 Blasland GM NAO - Flint Description of Current Conditions 251 Bouck & Lee, for Areas North of Leith Street - Inc. Volumes I-IV

3 945170 6/28/02 BBL, Inc. GM NAO - Flint Resource Conservation and 2154 Recovery Act (RCRA) Facility Investigation Phase I Report - Volumes I of IV

4 945197 8/17/04 U.S. EPA File Environmental Indicator (EI) RCRIS 13 Code (CA725)

5 945196 9/29/05 U.S. EPA File Environmental Indicator (EI) RCRIS 19 Code (CA750)

6 945171 4/26/07 Arcadis/BBL, U.S. EPA Flint River Sediment Investigation 207 Inc.

7 945172 7/5/07 BBL, Inc. GM NAO - Flint Resource Conservation and 2481 Recovery Act (RCRA) Facility Investigation Phase II Report - Volume I of III

8 945195 5/1/10 U.S. EPA General Final Decision Response to 25 Comments for Soil and Groundwater Cleanup

9 945187 10/21/10 Arcadis Motors Resource Conservation and 129 Liquidation Recovery Act (RCRA) Revised Company Corrective Measures Proposal - Addendum No. 2 - Northend Corrective Measures and Site-Wide Groundwater Monitoring NO. SEMS ID DATE AUTHOR RECIPIENT TITLE/DESCRIPTION PAGES

10 945185 4/29/11 Arcadis Revitalizing 2010 Corrective Measures 476 Auto Implementation (CMI) Annual Communities Report Environmental Response Trust

11 945194 6/1/11 Arcadis Revitalizing Resource Conservation and 34 Auto Recovery Act (RCRA) Revised Communities Corrective Measures Proposal - Environmental Addendum No. 2-1 - Response to Response Trust USEPA

12 945198 9/29/11 Guerrero, M., Hill, M., Administrative Order on Consent 10 U.S. EPA RACER Trust (AOC)

13 945200 10/14/11 Arcadis Black, C., U.S. Quarterly Progress Report No. 1 14 EPA

14 945201 10/14/11 Arcadis Black, C., U.S. Quarterly Progress Report No. 2 17 EPA

15 945173 3/9/12 Arcadis File LNAPL Remediation Technology 344 Bench-Scale Testing Report

16 945199 4/2/12 Arcadis Revitalizing 2011 Corrective Measures 184 Auto Implementation (CMI) Annual Communities Report Environmental Response Trust

17 945202 4/13/12 Arcadis Black, C., U.S. Quarterly Progress Report No. 3 14 EPA

18 945203 7/13/12 Arcadis Black, C., U.S. Second Quarter 2012 Quarterly 12 EPA Progress Report

19 945204 10/8/12 Arcadis Black, C., U.S. Third Quarter 2012 Progress Report 22 EPA No. 5

20 945225 1/11/13 Arcadis Black, C., U.S. Fourth Quarter 2012 Progress Report 26 EPA No. 6

21 945186 3/29/13 Arcadis Revitalizing 2012 Corrective Measures 1183 Auto Implementation (CMI) Annual Communities Report and Requested Changes to Environmental Groundwater Monitoring Plan Response Trust

22 945226 4/12/13 Arcadis Black, C., U.S. First Quarter 2013 Progress Report 28 EPA No. 7 NO. SEMS ID DATE AUTHOR RECIPIENT TITLE/DESCRIPTION PAGES

23 945227 7/15/13 Arcadis Black, C., U.S. Second Quarter 2013 Progress 30 EPA Report No. 8

24 945205 10/16/13 Arcadis Black, C., U.S. Third Quarter 2013 Progress Report 28 EPA No. 9

25 945206 1/15/14 Arcadis Black, C., U.S. Fourth Quarter 2013 Progress Report 27 EPA No. 10

26 945207 4/16/14 Arcadis Black, C., U.S. First Quarter 2014 Progress Report 25 EPA No. 11

27 945208 7/15/14 Arcadis Black, C., U.S. Second Quarter 2014 Progress 25 EPA Report No. 12

28 945174 8/28/14 Arcadis U.S. EPA 2013 Corrective Measures 1830 Implementation (CMI) Annual Report

29 945175 9/12/14 Arcadis File Final Draft - Racer Buick City 2074 Remedy Recommendation Report

30 945176 9/12/14 Arcadis File Final Draft - Racer Buick City 9829 Remedy Recommendation Report - Appendix Y

31 945209 10/15/14 Arcadis Black, C., U.S. Third Quarter 2014 Progress Report 27 EPA No. 13

32 945210 1/15/15 Arcadis Black, C., U.S. Fourth Quarter 2014 Progress Report 24 EPA No. 14

33 945211 4/15/15 Arcadis Black, C., U.S. First Quarter 2015 Progress Report 23 EPA No. 15

34 945212 7/15/15 Arcadis Black, C., U.S. Second Quarter 2015 Progress 23 EPA Report No. 16

35 945188 7/24/15 Arcadis Black, C., U.S. 2014 Annual Groundwater 58 EPA Monitoring Report

36 945213 10/14/15 Arcadis Black, C., U.S. Third Quarter 2015 Progress Report 22 EPA No. 17

37 945214 1/18/16 Arcadis Black, C., U.S. Fourth Quarter 2015 Progress Report 23 EPA No. 18

38 945215 4/15/16 Arcadis Black, C., U.S. First Quarter 2016 Progress Report 21 EPA No. 19

39 945216 7/15/16 Arcadis Black, C., U.S. Second Quarter 2016 Progress 22 EPA Report No. 20 NO. SEMS ID DATE AUTHOR RECIPIENT TITLE/DESCRIPTION PAGES

40 945190 9/1/16 Arcadis Revitalizing Arcadis - 2015 Annual Groundwater 958 Auto Monitoring Report Communities Environmental Response Trust

41 945217 10/15/16 Arcadis Black, C., U.S. Third Quarter 2016 Progress Report 21 EPA No. 21

42 945218 1/13/17 Arcadis Black, C., U.S. Fourth Quarter 2016 Progress Report 20 EPA No. 22

43 945219 4/17/17 Arcadis Black, C., U.S. First Quarter 2017 Progress Report 17 EPA No. 23

44 945220 7/11/17 Arcadis Black, C., U.S. Second Quarter 2017 Progress 19 EPA Report No. 24

45 945191 9/26/17 Arcadis Revitalizing Arcadis - 2016 Annual Groundwater 93 Auto Monitoring Report Communities Environmental Response Trust

46 945221 10/15/17 Arcadis Black, C., U.S. Third Quarter 2017 Progress Report 19 EPA No. 25

47 945222 1/15/18 Arcadis Black, C., U.S. Fourth Quarter 2017 Progress Report 18 EPA No. 26

48 945223 4/15/18 Arcadis Black, C., U.S. First Quarter 2018 Progress Report 19 EPA No. 27

49 945224 7/16/18 Arcadis Black, C., U.S. Second Quarter 2018 Progress 19 EPA Report No. 28

50 945189 Undated Arcadis File Historical Groundwater Monitoring 305 Data - Appendix A

51 945192 Undated Arcadis File Arcadis - Appendix A - Historical 323 Groundwater Monitoring Data