POTQMAC YARDENFORCEMENT REMOVAL ADMINISTRATIVE RECORD FILE *

INDEX OF DOCUMENTS

I. ENFORCEMENT DOCUMENTS

1. Preliminary Assessment of Potomac Yard, prepared byDonald Spell, Commonwealth of Virginia, Department ofWaste Management, 4/19/88. P. 100001-100118.

2. Draft Sampling and Analysis Plan for the Potomac YardSite, Alexandria, Virginia, prepared by Hydrosysterns,Inc., 9/28/88. P. 100119-100162.

3. Site Investigation of Potomac Yard, prepared by DonaldR. Spell, Commonwealth of Virginia, Department of WasteManagement, 2/28/89. P. 100163-100558.

4. Environmental Assessment Report, Northern Portion ofPotomac Yard, Alexandria, Virginia, 2/6/90. P. 100559-100750.

5. Draft Environmental Assessment for Seven Areas atPotomac Yard, Alexandria, Virginia, prepared byHydrosystems, Inc., 8/19/91. P. 100751-100796.

6. Letter to Mr. Morris Orens, Shereff, Friedman, Hoffman,and Goodman, from Mr. Steven A. Dielman and Ms. JoyceS. Schlesinger, Environ Corporation, re: Assessment ofpotential environmental liability posed by surface andsubsurface contamination at Potomac Yard, 8/27/91.P. 100797-100873. The following are attached:.

a) a map entitled "Potomac Yard Site Locationand Southern Portion Areas of EnvironmentalConcern;"

b) Section I, Southern Portion Soils;

c) Attachment 1, Estimation of PotentialEnvironmental Liability;

d) Chapter 1.0 - Introduction;

Administrative Record File available 9/15/92, updated9/25/92, 12/15/92, 4/24/95, 9/21/95, 9/28/95, 10/20/95,7/24/96, 9/19/97, 3/5/99, and 8/31/99.

e) Appendix A, Calculations Of ContaminantConcentrations In The Potomac River Based OnSite Runoff;

f) Appendix B, Calculation of Total PNA's;

g) Appendix C, Dose Calculations;

h) a letter dated March 22, 1990 concerning ananalysis of Hydrosysterns, Inc.'s FeasibilityStudy.

7. Site Characterization Report, Site Investigation ofDiesel Fuel Contamination, Potomac Yard, Alexandria,Virginia, prepared by Hydrosystems, Inc., 11/22/91.P. 100874-101043. A transmittal letter is attached.

8. Letter to Ms. Lourdes Rodrigues, U.S. EPA, from Ms.Susan H. Buffington, RF&P Railroad Company (RF&P), re:Response to inquiry concerning the relationship betweenRF&P Railroad, RF&P Corporation and the VirginiaRetirement System as it relates to the ownership andoperation of Potomac Yard, 7/24/92. P. 101044-101045.

9. Contamination Investigation Plan, prepared byEnvironmental Technology of North America, Inc.,7/28/92. P. 101046-101316.

10. Administrative Order By Consent In The Matter Of: ThePotomac Yard Site. Richmond, Fredericksburg andPotomac Railroad Company, Respondent, Docket No. III-92-61-DC, 9/22/92. P. 101317-101348.

11. U.S. EPA Public Notice, re: Availability of theAdministrative Record for the Potomac Yard Site,11/12/92. P. 101349-101349.

12. Report: "Errata" Work Plan for Extent ofContamination. Study of Potomac Rail Yard Site,prepared by Haliburton NUS Environmental Corporation,12/23/92. P. 101350-101866. A cover letter isattached.

13. Letter to Mr. Christopher Moses, Earth Tech RemediationServices, Inc. (ETI), from Mr. Christopher P. Thomas,U.S. EPA, re: Completion of EPA's review of therevised ETI work plan for the Extent of ContaminationStudy, 3/8/93. P. 101867-101870.

14. Amendment to Administrative Order By Consent In TheMatter Of: The Potomac Yard Site, Docket No. 111-92-61-DC, 1/24/94. P. 101871-101876.

15. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Confirmation of severalproposed sampling issues at the site, 3/17/94.P. 101877-101879.

16. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: EPA's disapproval ofRF&P's work plan, 3/31/94. P. 101880-101896.

17. Response to EPA's comments dated March 31, 1994,(undated). P. 101897-102193.

18. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Transmittal ofadditional comments on the work plan addendum, 4/22/94.P. 102194-102201.

19. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Transmittal ofadditional comments, prepared by the National Oceanicand Atmospheric Administration (NOAA), to the work planaddendum, 4/29/94. P. 102202-102204.

20. Letter to Ms. Vibeke Lindblom, Alexandria SanitationAuthority, from Ms. Kathy Thomas, EnvironmentalTechnology of North America, Inc., re: Request forpermission to discharge 250 gallons of groundwater intothe Alexandria sanitary sewer, 5/26/94. P. 102205-102207. The groundwater sampling data is attached.

21. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. ChuckFlippo, Environmental Technology of North America Inc.,re: Transmittal of a copy of the Work Plan for Removalof North, Middle, and South Ponds at Potomac Greens,6/8/94. P. 102208-102231. A copy of the work plan anda letter dated November 30, 1993, concerning theoil/water separator removal, are attached.

22. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Disapproval of therevised Work Plan Addendum, 7/8/94. P. 102232-102295.The Environmental Risk Assessment Guidelines areattached.

23. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Continuing deficienciesin the revised work plan prepared by RF&P, 10/25/94.P. 102296-102328. A report dated July 27, 1994,entitled Region III Interim Ecological Risk AssessmentGuidelines and Attachment Ar entitled DataPresentation, are attached.

24. Letter to Mr. Bob Davis, U.S. EPA, from Ms. Judi L.Durda, Weinberg Consulting Group, re: Evaluatingecological exposures on a sample-point-specific basisfor each potential ecological exposure point, 11/1/94.P. 102329-102330.

25. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. ChuckFlippo, Environmental Technology of North America, re:Request for clarifications of certain modifications tothe work plan addendum presented in EPA's October 25,1994 letter, 11/7/94. P. 102331-102333. A tableentitled EPA Region III Risk-Based Concentrations isattached.

26. Letter to Ms. Judi L. Durda, Weinberg Consulting GroupInc., from Mr. Robert S. Davis, U.S. EPA, re: Commentsindicating EPA's position concerning contaminationlevels, 11/9/94. P. 102334-102334.

27. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA's response to several issuesconcerning additional sampling at the site, 11/10/94.P. 102335-102335.

28. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. ChuckFlippo, Environmental Technology of North America,Inc., re: Transmittal of documents required forapproval of the modified Extent of Contamination StudyWork Plan Addendum, 11/23/94. P. 102339-102563. Thefollowing are attached:

a) revised Appendix 0, Definition of GridSystems;

b) Attachment 3, Future Use Information For RiskAssessment;

c) Attachment A, 1989 aerial photograph of siteand surrounding area;

d) Attachment B, documentation on installationof drinking water wells in Arlington andAlexandria;

e) Attachment C, census data;

f) Attachment D, small area plan chapter of Cityof Alexandria Master Plan, zoning ordinanceNo. 3604, and section 5-600 AlexandriaCoordinated Development DistrictGuidelines/Ordinances;

g) Attachment E, Arlington County General LandUse Plan;

h) Attachment F, development plans andsupporting information and drawings;

i) Attachment 4, Technical services divisionfield sample work sheet;

j) Attachment 5, Appendix P;

k) Attachment 6, revised ECS schedule.

29. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Biological TechnicalAssistance Group's continued reservations about theecological risk assessment, 1/27/95. P. 102564-102573.

30. Letter to Channing J. Martin, Williams/ Mullen,Christian, and Dobbins, from Mr. Thomas C. Voltaggio,U.S. EPA, re: EPA's addressing the concerns about theimplementation of the Administrative Order on Consent,1/30/95. P. 102574-102590. The U.S. EPA's comments onthe Contamination Investigation Plan are attached.

31. Report: Extent of Contamination Study for PotomacYard. Alexandria, Virginia/Volume I, Text and Tables,prepared by Environmental Technology of North America,Inc. (ETI), 5/24/95. P. 102591-102981.

32. Report: Extent of Contamination Study for PotomacYard, Alexandria, Virginia/Volume II, Figures, preparedby ETI, 2/22/95. P. 102982-103050.

33. Report: Extent of Contamination Study for PotomacYard, Alexandria, Virginia/Volume III, Plates, preparedby ETI, 2/22/95. P. 103051-103075.

34. Report: Extent of Contamination Study for PotomacYard, Alexandria, Virginia/Volume IV. Analytical Data,prepared by Environmental Technology of North America,Inc., 5/24/95. P. 103076-103381.

35. Report: Extent of Contamination Study for PotomacYard. Alexandria, Virginia/Volume V, Appendices A-H.prepared by Environmental Technology of North America,Inc., 5/24/95. P. 103382-103869.

36. Report: Extent of Contamination Study for PotomacYard, Alexandria. Virginia/Volume VI. AppendicesI-W, prepared by Environmental Technology of NorthAmerica, Inc., 2/22/95. P. 103870-104290.

37. Report: Extent of Contamination Study for PotomacYard, Alexandria, Virginia/Volume VII. AppendicesX-Z, prepared by Environmental Technology of NorthAmerica, Inc., 5/24/95. P. 104291-104850.

38. Report: Potomac Yard Environmental ActivitiesSupplemental Information, prepared by EnvironmentalTechnology of North America, Inc., 7/31/95.P. 104851-105000.

39. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Notification of EPA'sdisapproval of the Extent of Contamination Study, EPA'scomments are included, 4/28/95. P. 105001-105011.

40. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Additional comments concerning theExtent of Contamination Study, 5/11/95. P. 105012-105018.

41. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Conditional approval of the Extentof Contamination Study, 6/22/95. P. 105019-105020.

42. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Summary of a conference callconcerning the use of groundwater at the site as apotential drinking source, 7/13/95. P. 105021-105025.An excerpt from a paper on groundwater resources isattached.

43. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ChuckFlippo, Environmental Technology of North America,Inc., re: Transmittal of the RF&P's responses incompliance with EPA's conditional approval of theExtent of Contamination Study, 7/24/95. P. 105026-105073. The responses and a map of the site areattached.

44. Report: Human Health and Ecological Risk Assessment/Potomac Yard, prepared by Weinberg Consulting Group,Inc., 8/21/95. P. 105074-105268. A transmittal letterand a series of tables providing a summary of responsesto EPA's comments are attached.

45. Report: Human Health and Ecological Risk Assessment/Potomac Yard. Appendices A-N. prepared by WeinbergConsulting Group, Inc., 8/21/95. P. 105269-105768.

46. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA's final approval of the Extentof Contamination Study, 9/19/95. P. 105769-105769.

47. Report: Human Health Risk Assessment and On-SiteEcological Risk Assessment, prepared by WeinbergConsulting Group, Inc., 10/13/95. P. 105770-105941.A transmittal letter is attached.

48. Report: Human Health Risk Assessment and On-SiteEcological Risk Assessment/Appendices A-N, prepared byWeinberg Consulting Group, Inc., 10/13/95. P. 105942-106410.

49. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Notification of EPA's disapprovalof the Human Health and Ecological Risk Assessment anda list of deficiencies for that report, 9/22/95.P. 106411-106418.

50. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Transmittal of a summary ofcomments concerning the Human Health and EcologicalRisk Assessment, 9/29/95. P. 106419-106423. Thesummary is attached.

51. Memorandum to Mr. Thomas C. Voltaggio, U.S. EPA, fromMr. Jeffrey A. Dodd, U.S. EPA, re: A request forapproval to conduct an engineering evaluation/costanalysis for removal action at the Potomac Yard Site,10/6/95. P. 106424-106435. The signed approval pageis attached.

52. Letter to Mr. Scott Slagley, RF&P Corporation, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Approval of the HumanHealth and On-Site Ecological Risk Assessment,10/13/95. P. 106436-106437.

53. Progress Report for the Potomac Yard Site, April 23,1993, through April 30, 1993, prepared by EnvironmentalTechnology of North America, Inc. (ETI), 5/6/93.P. 106438-106442. A May 6, 1993, transmittal letter isattached.

54. Progress Report No. 2 for the Potomac Yard Site, May 1,1993, through May 14, 1993, prepared by ETI, 5/19/93.P.106443-106544. A May 19, 1993, transmittal letter isattached.

55. Progress Report No. 3 for the Potomac Yard Site, May15, 1993, through May 28, 1993, prepared by ETI,6/3/93. P. 106545-106864. A June 3, 1993,transmittal letter is attached.

56. Progress Report No. 4 for the Potomac Yard Site, May29, 1993, through June 11, 1993, prepared by ETI,6/16/93. P. 106865-106868. A June 16, 1993,transmittal letter is attached.

57. Progress Report No. 5 for the Potomac Yard Site, June12, 1993, through June 18, 1993, prepared by ETI,6/30/93. P. 106869-106872. A June 30, 1993,transmittal letter is attached.

58. Progress Report No. 6 for the Potomac Yard Site, June19, 1993, through July 2, 1993, prepared by ETI,7/14/93. P. 106873-106876. A July 14, 1993,transmittal letter is attached.

59. Progress Report No. 7 for the Potomac Yard Site, July3, 1993, through July 16, 1993, prepared by ETI,7/16/93. P. 106877-107466.

60. Progress Report No. 8 for the Potomac Yard Site, July17, 1993, through July 30, 1993, prepared by ETI,8/12/93. P. 107467-107470. An August 12, 1993,transmittal letter is attached.

61. Progress Report No. 9 for the Potomac Yard Site, July31, 1993, through August 13, 1993, prepared by ETI,8/25/93. P. 107471-107479. An August 25, 1993,transmittal letter is attached.

62. Progress Report No. 10 for the Potomac Yard Site,August 14, 1993, through August 27, 1993, prepared byETI, 9/8/93. P. 107480-107484. A September 8, 1993,transmittal letter is attached.

63. Progress Report No. 11 for the Potomac Yard Site,August 28, 1993, through September 10, 1993, preparedby ETI, 9/22/93. P. 107485-107489. A September 22,1993, transmittal letter is attached.

64. Progress Report No. 12 for the Potomac Yard Site,September 11, 1993, through September 24, 1993,prepared by ETI, 10/6/93. P. 107490-107564. AnOctober 6, 1993, transmittal letter is attached.

65. Progress Report No. 13 for the Potomac Yard Site,September 24, through October 8, 1993, prepared by ETI,10/21/93. P. 107565-107590. An October 21, 1993,transmittal letter is attached.

66. Progress Report No. 14 for the Potomac Yard Site,October 9, 1993, through October 22, 1993, prepared byETI, 11/3/93. P. 107591-107594. A November 3, 1993,transmittal letter is attached.

67. Progress Report No. 15 for the Potomac Yard Site,October 23, 1993, through November 5, 1993, prepared byETI, 11/17/93. P. 107595-107599. A November 17, 1993,transmittal letter is attached.

68. Progress Report No. 16 for the Potomac Yard Site,November 6, 1993, through November 19, 1993, preparedby ETI, 12/1/93. P. 107600-107660. A December 1,1993, transmittal letter is attached.

69. Letter to Mr. Jay Green, Department of EnvironmentalQuality, from Mr. Kenneth M. Lyons, ETI, re:Transmittal of the free product removal reports for thesite, 12/6/93. P. 107661-107664.

70. Progress Report No. 17 for the Potomac Yard Site,November 20, 1993, through December 3, 1993, preparedby ETI, 12/15/93. P. 107665-107668. A December 15,1993, transmittal letter is attached.

71. Progress Report No. 18 for the Potomac Yard Site,December 4, 1993, through December 17, 1993, preparedby ETI, 12/29/93. P. 107669-107676. A December 29,1993, transmittal letter is attached.

72. Progress Report No. 19 for the Potomac Yard Site,December 18, 1993, through December 31, 1993, preparedby ETI, 1/12/94. P. 107677-107680. A January 12,1994, transmittal letter is attached.

73. Progress Report No. 20 for the Potomac Yard Site,January 1, 1994, through January 14, 1994, prepared byETI, 1/26/94. P. 107681-107684. A January 26, 1994,transmittal letter is attached.

74. Progress Report No. 21 for the Potomac Yard Site,January 15, 1994, through January 28, 1994, prepared byETI, 2/9/94. P. 107685-107688. A February 9, 1994,transmittal letter is attached.

75. Progress Report No. 22 for the Potomac Yard Site,January 29, 1994, through February 28, 1994, preparedby ETI, 3/11/94. P. 107689-107692. A March 11, 1994,transmittal letter is attached.

76. Progress Report No. 23 for the Potomac Yard Site, March1, 1994, through March 31, 1994, prepared by ETI,4/13/94. P. 107693-107695. An April 13, 1994,transmittal letter is attached.

77. Progress Report No. 24 for the Potomac Yard Site, April1, 1994, through April 30, 1994, prepared by ETI,5/12/94. P. 107696-107702. A May 12, 1994,transmittal letter is attached.

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78. Progress Report No. 25 for the Potomac Yard Site, MayI, 1994, through May 31, 1994, prepared by ETI,6/14/94. P. 107703-107821. A June 14, 1994,transmittal letter is attached.

79. Progress Report No. 26 for the Potomac Yard Site, June1, 1994, through June 30, 1994, prepared by ETI,6/30/94. P. 107822-107829.

80. Progress Report No. 27 for the Potomac Yard Site, July1, 1994, through July 30, 1994, prepared by ETI,8/12/94. P. 107830-1077838. An August 12, 1994,transmittal letter is attached.

81. Progress Report No. 28 for the Potomac Yard Site,August 1, 1994, through August 31, 1994, prepared byETI, 9/13/94. P. 107839-107847. A September 13, 1994,transmittal letter is attached.

82. Progress Report No. 29 for the Potomac Yard Site,September 1, 1994, through September 30, 1994, preparedby ETI, 9/30/94. P. 107848-107850.

83. Progress Report No. 30 for the Potomac Yard Site,October 1, 1994, through October 31, 1994, prepared byETI, 11/13/94. P. 107851-107858. A November 13, 1994,transmittal letter is attached.

84'. Progress Report No. 31 for the Potomac Yard Site,November 1, 1994, through November 30, 1994, preparedby ETI, 12/13/94. P. 107859-107867. A December 13,1994, transmittal letter is attached.

85. Progress Report No. 32 for the Potomac Yard Site,December 1, 1994, through December 31, 1994, preparedby ETI, 1/13/95. P. 107868-107871. A January 13,1995, transmittal letter is attached.

86. Progress Report No. 33 for the Potomac Yard Site,January 1, 1995, through January 31, 1994, prepared byETI, 2/13/95. P. 107872-107880. A February 13, 1995,transmittal letter is attached.•

87. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Notification of agreement to complywith the U.S. EPA directives for Extent ofContamination Study Work Plan Addendum, 2/17/95.P. 107881-107882.

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88. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ChuckFlippo, ETI, re: Transmittal of documents andinformation required by U.S. EPA's letter of January,27, 1995, on behalf of Mr. Scott Slagley, 2/27/95.P. 107883-107899. The following are attached:

a) a revised plate of soil testing results atthe site;

b) documentation on the installation of drinkingwater wells;

c) an excerpt from Commonwealth of VirginiaPrivate Well Regulations;

d) a revised Technical Services Division fieldsampling worksheet;

e) documentation of preservatives used in watersampling.

89. Progress Report No. 34 for the Potomac Yard Site,February 1, 1995, through February 28, 1995, preparedby ETI, 3/13/95. P. 107900-107911. A March 13, 1995,transmittal letter is attached.

90. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.William J. Skrabak, Alexandria Health Department, re:Comments on the Draft Extent of Contamination Study forthe site, 4/10/95. P. 107909-107911.

91. Progress Report No. 35 for the Potomac Yard Site,March 1, 1995, through March 31, 1995, prepared by ETI,4/13/95. P. 107912-107920. An April 13, 1995,transmittal letter is attached.

92. Progress Report No. 36 for the Potomac Yard Site, April1, 1995, through April 30, 1995, prepared by ETI,5/12/95. P. 107921-107929. A May 12, 1995,transmittal letter is attached.

93. Memorandum to Ms. Joan S. Dollarhide, U.S. EPA, fromMr. Roy L. Smith, U.S. EPA, re: Request for review ofarsenic speciation and potential gastrointestinal (GI)absorption from site-specific soil, 5/30/95.P. 107930-107944.

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94. Progress Report No. 37 for the Potomac Yard Site, May1, 1995, through May 31, 1995, prepared by ETI,6/13/95. P. 107945-107951. A June 13, 1995,transmittal letter is attached.

95. Memorandum to Mr. Jeffrey A. Dodd, U.S. EPA, from Ms.Patricia Flores, U.S. EPA, re: Review of the emissionsand dispersion modeling analysis for the site, 7/12/95.P. 107952-107952.

96. Progress Report No. 38 for the Potomac Yard Site, June1, 1995, through June 30, 1995, prepared by ETI,7/13/95. P. 107953-107959. A July 13, 1995,transmittal letter is attached.

97. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Summary of information presentedin a July 7, 1995, conference call which dealt withpotential use of ground water beneath the site as adrinking source, 7/13/95. P. 107960-107964. A tableof regional well depths versus yields is attached.

98. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: U.S. EPA disapproval of the June7, 1995, human health risk assessment, and request forrevision, 7/17/95. P. 107965-107973.

99. Letter to Mr, Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Request for an extension of time torespond to U.S. EPA's comments on the human health andecological risk assessment, 8/10/96. P. 107974-107974.

100. Progress report No. 39 for the Potomac Yard Site, July,1, 1995, through July 31, 1995, prepared by ETI,8/13/95. P. 107975-107981. An August 13, 1995,transmittal letter is attached.

101. Letter to Ms. Judi Durda, Weinberg Consulting Group,Inc. from Mr. Robert S. Davis, U.S. EPA, re: Follow -up to telephone conversation explaining U.S. EPApotential risk tables and how they are used in theevaluation process, 8/23/95. P. 107982-107984.

102. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Request for clarification of U.S.EPA guidelines, 9/11/95. P. 107985-107986.

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103. Progress report No. 40 for the Potomac Yard Site,August 1, 1995, through August 31, 1995, prepared byETI, 9/13/95. P. 107987-107993. A September 13, 1995,transmittal letter is attached.

104. Report: Summary of Aareements Reached between U.S. EPAand RF&P Railroad Company Durina Meetina on September26, 1995, Reaardina Finalization of the On-SiteEcoloaical Risk Assessment for the Potomac Yard Site,Arlinaton/Alexandria, Virginia, prepared by RF&P,9/29/95. P. 107994-107998. A September 29, 1995,transmittal letter is attached.

105. Progress report No. 41 for the Potomac Yard Site,September 1, 1995, through September 30, 1995, preparedby ETI, 10/13/95. P. 107999-108008. An October 13,1995, transmittal letter is attached.

106. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Request for off-site samplingrequirements to be separated from the EngineeringEvaluation/Cost Analysis (EE/CA) in order to expediteits submission, 10/20/95. P. 108009-108010.

107. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Ms.Jennifer Payne, ETI, re: Transmittal of Errata IV listregarding table 1-1 for the revised extent ofcontamination study, 10/26/95. P. 108011-108015. TheErratta IV list and revised table 1-1 are attached.

108. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: U.S. EPA approval of request toseparate off-site sampling requirements from the EE/CA,10/31/95. P. 108016-108017.

109. U.S. EPA Extent of Contamination Study Fact Sheet forthe Potomac Yard Site, prepared by U.S. EPA, 11/95.P. 108018-108023.

110. U.S. EPA Engineering Evaluation/Cost Analysis (EE/CA)Fact Sheet for the Potomac Yard Site, prepared by U.S.EPA, 11/95. P. 108024-108025.

111. U.S. EPA Baseline Human Health and Ecological RiskAssessment Fact Sheet for the Potomac Yard Site,prepared by U.S. EPA, 11/95. P. 108026-108028.

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112. Progress report No. 42 for the Potomac Yard Site,October 1, 1995, through October 31r 1995, prepared byETI, 11/13/95. P. 108029-108035. A November 13, 1995,transmittal letter is attached.

113. Letter to Mr. Steven Krai, from Mr. Jeffrey A. Dodd,U.S. EPA, re: Denial of request to extend publiccomment period, 11/14/95. P. 108036-108037.

114. Letter to Mr. Robert Davis, U.S. EPA, from Ms. Judi L.Durda, The Wienberg Group, Inc., re: Request forsediment sampling work plan information, 11/17/96.P. 108038-108038.

115. Letter to Ms. Judi L. Durda, The Weinberg Group, Inc.,from Mr. Robert S. Davis, U.S. EPA, re: Transmittal ofbackground information from the Dupont-Newport site,11/27/96. P. 108039-108056. The following areattached:

a) a list of basic surface water and sedimentparameters;

b) excerpts from the Dupont-Newport RI/FS workplan;

c) a November 17, 1995, letter requestinginclusion of additional testing in the workplan;

d) a graph of distribution of sedimentcontamination enrichment factors for metalsin the Christina River.

116. Progress report No. 43 for the Potomac Yard Site,November 1, 1995, through November 3, 1995, prepared byETI, 12/13/95. P. 108057-108063. A December 13, 1995,transmittal letter is attached.

117. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Request for extension of time tosubmit the work plan for off-site risk assessment,12/14/95. P. 108064-108064.

118. Letter to Mr. Scott Slagley, RF&P Corporation, Mr.Jeffrey A. Dodd, U.S. EPA, re: Approval of request forextension of time to submit the work plan for off-siterisk assessment, 12/15/95. P. 108065-108065.

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119. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.William J. Skrabak, Alexandria Health Department, re:Comments on the draft EE/CA work plan, 12/21/95.P. 108066-108071.

120. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Request for EPA concurrence thatno off-site removal actions will be necessary for theSlaters Lane area of the site, 12/21/95. P. 108072-108072.

121. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Notification of EPA disapproval ofthe EE/CA with supporting comments, 12/22/95.P. 108073-108082.

122. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA's determination that removalactions at the Slaters Lane area of the site areunnecessary, 12/29/95. P. 108083-108084.

123. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Request for a meeting with EPA,1/9/96. P. 108085-108086.

124. Progress report No. 44 for the Potomac Yard Site,December 1, 1995, through December 31, 1995, preparedby ETI, 1/12/96. P. 108087-108093. A January 12,1996, transmittal letter is attached.

125. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Notification of a meeting date andapproval of an extension of time to respond to EPAcomments, 1/17/96. P. 108094-108094.

126. Letter to Mr. Scott A. Slagley, RF&P, from Ms. Joan C.Becker Kelsch, Arlington County, Virginia Department ofEnvironmental Services, re: Comments on the draft workplan for off-site ecological risk assessment, 1/19/96.P. 108095-108096.

127. Memorandum to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.Roy L. Smith, U.S. EPA, re: Final National Center forEnvironmental Assessment (NCEA) evaluation of RF&P!ssite specific study of arsenic absorption, 1/23/96.P. 108097-108097.

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128. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: NCEA evaluation of the site-specific study of arsenic uptake, 1/26/96. P. 108098-108121. A January 16, 1996, memorandum, a November 13,1995, transmittal memorandum, and NCEA review ofarsenic speciation and potential GI absorption fromsite-specific soil are attached.

129. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.William J. Skrabak, Alexandria Health Department, re:Comments on the draft work plan of the off-siteecological risk assessment, and transmittal of commentsfrom the City of Arlington's environmental consultant,1/30/96. P. 108122-108125. A January 24, 1996,memorandum regarding comments on the draft work planfor off-site ecological risk assessment at the site isattached.

130. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA disapproval of and comments onthe draft work plan for off-site ecological riskassessment, 2/9/96. P. 108126-108143.

131. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Notification that RF&P is stillwaiting on a response to a specific comment from EPA,and request for an extension of time to submit therevised EE/CA, 2/13/96. P. 108144-108144.

132. Letter to Mr, Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Approval of request for extensionof time to submit the EE/CA, 2/14/96. P. 108145-108145.

133. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA response to the unansweredcomment on the EE/CA, 2/22/96. P. 108146-108147.

134. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from ChanningJ. Martin, Williams, Mullen, Christian & Dobbins, re:RF&P's concerns about EPA's comments on the off-siteecological risk assessment, request for a meeting todiscuss those concerns, and request for an extension oftime to respond to the comments, 2/26/96. P. 108148-108150.

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135. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: RF&P's concerns with EPA'sdesire to incorporate a total metals analysis into thestorm water monitoring program portion of the EE/CA,2/29/96. P. 108151-108152.

136. Progress report No. 46 for the Potomac Yard Site,February 1, 1996, through February 29, 1996, preparedby ETI, 3/13/96. P. 108153-108159. A March 13, 1996,transmittal letter is attached.

137. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.William J. Skrabak, Alexandria Health Department, re:Comments on the revised draft EE/CA, 3/19/96.P. 108160-108162.

138. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Ms.Jennifer Payne, ETI, re: Request for extension of timeto submit the revised work plan for off-site ecologicalrisk assessment due to several unresolved issuesbetween RF&P and EPA, 3/20/96. P. 108163-108163.

139. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA's approval of RF&P's requestfor an extension of time to submit the revised workplan for off-site ecological risk assessment untilafter all issues have been resolved, 3/28/96.P. 108164-108164.

140. Progress report No. 47 for the Potomac Yard Site,March 1, 1996, through March 31, 1996, prepared by ETI,A/12/96. P. 108165-108172. An April 12, 1996,transmittal letter is attached.

141. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Conditional approval of the draftEE/CA, 4/17/96. P. 108173-108181.

142. Progress report No. 48 for the Potomac Yard Site, April1, 1996, through April 30, 1996, prepared by ETI,5/13/96. P. 108182-108188. A May 13, 1996,transmittal letter is attached.

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143. Letter to Mr. Thomas C. Voltaggio, U.S. EPA, fromChanning J. Martin, Williams/ Mullen, Christian &Dobbins, re: RF&P's belief that it is unnecessary toundertake sampling at the Potomac Greens drainageditches as part of the off-site risk assessment, andrequest to discuss the matter with EPA, 5/23/96.P. 108189-108191.

144. Progress report No. 49 for the Potomac Yard Site, May1, 1996, through May 31, 1996, prepared by ETI,6/13/96. P. 108192-108198. A June 13, 1996,transmittal letter is attached.

145. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Ms.Patricia McMurray, Commonwealth of Virginia Departmentof Environmental Quality, re: Transmittal of commentson the final EE/CA, 6/17/96. P. 108199-108203. Thecomments are attached.

146. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA approval of the final EE/CApending certain modifications, 6/17/96. P. 108204-108208.

147. Report: Final Engineering Evaluation/Cost Analysis,Potomac Yard Site, prepared by ETI, 6/19/96. P.108209-108401. A June 21, 1996, transmittal letter isattached.

148. Letter to Channing J. Martin, Williams, Mullen,Christian & Dobbins, from Mr. Thomas C. Voltaggio, U.S.EPA, re: EPA's determination that sampling of thePotomac Greens drainage ditches must be included in theoff-site risk assessment, 7/1/96. P. 108402-108404.

149. Report: Community Relations Plan, Potomac Yards Site,prepared by Dynamac Corporation, 7/17/96. P. 108405-108458.

150. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.William J. Skrabak, Virginia Department of Health, re:Comments on the Extent of Contamination Study and theHuman Health Segment of the Risk Assessment, 10/27/95.P. 108459-108460.

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151. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottSlagley, RF&P, re: Incomplete Virginia PollutantDischarge Elimination System, (VPDES), and transmittalof the corrected VPDES, General Permit Coverage forPotomac Yard, 7/19/96. P. 108461-108510. Thefollowing are attached:

a) a letter to Mr. Jeffrey Dodd dated June 27,1996;

b) a copy of the Storm Water PollutionPrevention Plan (SPPP);

c} a letter to Mr. Denton U. Kent dated May 21,1996; and

d} a copy of General Permit For Storm WaterDischarges From Construction Sites.

152. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Ms.Patricia McMurray, Commonwealth of Virginia, re:Transmittal of comments on the SPPP, 8/8/96.P. 108511-108513.

153. Memorandum to Ms. Lisa Brown, U.S. EPA, from PatMiller, The Avenue Partnerships, re: Request for a 60day extension of the comment period and public meeting,8/9/96. P. 108514-108514.

154. Memorandum to Ms. Lisa Brown, U.S. EPA, from Ms. JoyceDoherty, resident, re: Request for a 60 day extensionof the comment period and public meeting, 8/9/96.P. 108515-108515.

155. Letter to Ms. Lisa Brown, U.S. EPA, from Ms. MarilynDoherty, resident, re: Request for a 60 day extensionof the comment period and public meeting to explainEE/CA recommendations, 8/13/96. P. 108516-108516.

156. Progress Report No. 51, for the Potomac Yard Site, July1, 1996, through July 31, 1996, prepared by Earth TechRemediation Services, 8/13/96. P. 108517-108527. AnAugust 13, 1996, transmittal letter is attached.

157. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: EPA and Virginia Department ofHealth comments on the SPPP, 8/14/96. P. 108528-108529.

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158. Letter to Ms. Marilyn Doherty, resident, from U.S. EPA,re: Response to request for 60 day extension to thepublic comment regarding EE/CA, 8/21/96. P. 108530-108530.

159. Letter to Ms. Joyce Doherty, resident, from U.S. EPA,re: Response to request for 60 day extension to thepublic comment regarding EE/CA, 8/21/96. P. 108531-108531.

160. Letter to Pat Miller, The Avenue Partnerships, from Mr.Jefferey A. Dodd, U.S. EPA, re: Response to requestfor 60 day extension to the public comment regardingEE/CA, 8/21/96. P. 108532-108533.

161. Letter to Mr. Scott Slagley, RF&P, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Modifications to therevised draft Off-Site Ecological Risk Assessment WorkPlan (OERAWP), 8/26/96. P. 108534-108536.

162. Letter to Mr, Jeffrey A. Dodd, U.S. EPA, from Mr.Christopher K. Moses, Earth Tech Remediation Services,re: Revised schedule for the OERAWP, 8/30/96.P. 108537-108539. A copy of the schedule is attached.

163. Report: Sampling Plan for Potomac Yard Site, preparedby Roy F. Weston (Weston), 8/30/96. P. 108540-108548.A transmittal letter dated September 5, 1996, isattached.

164. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.Christopher J. Lupia, Christopher Consultants Ltd., re:Response to EPA and Virginia Department ofEnvironmental Quality (VDEQ), comments on the SPPP fortrack relocation, 9/11/96. P. 108549-108643. AContingency Plan marked as Attachment 1, and a revisedPotomac Track Relocation Construction PollutionPrevention Plan, are attached.

165. Letter to Mr. Tom Faha, VDEQ, from Mr. Jeffrey A. Dodd,U.S. EPA, re: Transmittal of sediment and surfacewater data collected from the Potomac Yard Site,9/12/96. P. 108644-108645. The sediment and surfacewater data are not attached.

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166. Progress Report No. 52, for the Potomac Yard Site,August 1, 1996, through August 31, 1996, prepared byEarth Tech Remediation Services, 9/13/96. P. 108646-108653. A September 13, 1996, transmittal letter isattached.

167. U.S. EPA Public Notice, Potomac Yard Site, re: EPA toHold Public Meeting on the Engineering Evaluation/CostAnalysis for the Potomac Yard Site, held at Cora KellyRecreation Center 9/18/96. P. 108654-108654.

168. Transcript of September 18, 1996, public meetingconcerning Potomac Yard Site, held at Cora KellyRecreation Center, Alexandria, Virginia. P. 108655-108710.

169. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr. ScottA. Slagley, RF&P, re: Revised design of the stormwater management system from Potomac Yard, 10/8/96.P. 108711-108713. A map of the new storm water designis attached.

170. Letter to Mr. Christopher J. Lupia, ChristopherConsultants, Ltd., from Ms. Patricia McMurray,Commonwealth of Virginia, re: Responses to VDEQcomments on the SPPP for track relocation, 10/9/96.P. 108714-108715.

171. Report: Data Quality Report, prepared by Weston,10/9/96. P. 108716-108764. A transmittal letter datedNovember 12, 1996, is attached.

172. Progress Report No. 53, for the Potomac Yard Site,September 1, 1996 through September 30, 1996, preparedby Earth Tech Remediation Services, 10/11/96.P. 108765-108772. An October 11, 1996, transmittalletter and October 5, 1996, letter to Mr. Jay Green areattached.

173. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.Channing J. Martin, William, Mullen, Christian, &Dobbins, re: Common stock purchase agreement betweenVirginia Retirement System and LF Strategic RealtyInvestors, 11/12/96. P. 108773-108773.

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174. Progress Report No. 54., for the Potomac Yard site,October 1, 1996, through October 31, 1996, prepared byEarth Tech Remediation Services, 11/13/96. P. 108774-108781. A November 13, 1996, transmittal letter isattached.

175. Letter to Ms. Patricia McMurray, VDEQ, from Mr. GarlandH. Moore III, ETI, re: Response to VDEQ comments onground water discharge into a sediment trap, 11/20/96.P. 108782-108782.

176. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.Channing J. Martin, Williams, Mullen, Christian, &Dobbins, re: Meeting dates to discuss technical issuessurrounding analytical data, 12/3/96. P. 108783-108783.

177. Letter to Mr. Scott Slagley, RF&P, from Mr. Jeffrey A.Dodd, U.S. EPA, re: Comments on changes made to thestorm water management system in the engineeringevaluation/cost analysis, 12/7/96. P. 108784-108785.

178. Letter to Mr. Jeffrey A. Dodd, U.S. EPA, from Mr.Channing J. Martin, Williams, Mullen, Christian, &Dobbins, re: Possible meeting dates in January withEPA, 12/9/96. P. 108786-108786.

179. Letter to Ms. Ellen Pickering, resident, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Transmittal of theDecember 31, 1996, action memorandum entitled "Requestfor Approval of Removal Action at the Potomac Yard Sitein the City of Alexandria, and Arlington County,Virginia," (undated) . P. 108787-108787.

180. Letter to Mr. Denis O'Sullivan, resident, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Transmittal of theDecember 31, 1996, action memorandum entitled "Requestfor Approval of Removal Action at the Potomac Yard Sitein the City of Alexandria, and Arlington County,Virginia,"(undated). P. 108788-108788.

181. Letter to Mr. Marylin Doherty, resident, from Mr.Jeffrey A. Dodd, U.S. EPA, re: Transmittal of theDecember 31, 1996, action memorandum entitled "Requestfor Approval of Removal Action at the Potomac Yard Sitein the City of Alexandria, and Arlington County,Virginia,"(undated). P. 108789-108789.

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182. Progress Report No. 55, for the Potomac Yard site.November 1, 1996, through November 30, 1996, preparedby Earth Tech Remediation Services, 12/13/96.P. 108790-108796. A December 13, 1996, transmittalletter is attached.

183. Memorandum to Mr. Thomas C. Voltaggio, U.S. EPA, fromMr. Jeffrey A. Dodd, U.S. EPA, re: Request forapproval of removal action at the Potomac Yard Site,12/31/96. P. 108797-109011. The following areattached:

a) Attachment 1: Maps, figures and sketches,

b) Attachment 2: EE/CA Approval Memorandum,

c) Attachment 3: Engineering Evaluation/CostAnalysis.

184. Progress Report No. 56r for the Potomac Yard Site,December 1, 1996, through December 31, 1996, preparedby Earth Tech Remediation Services, 1/13/97.P. 109012-109018. A January 13, 1997, transmittalletter is attached.

185. Report: Trip Report for the Off-Site Sediment andSurface Water Sampling for the Potomac Yard Site,prepared by Weston, 1/15/97. P. 109019-109035. Atransmittal letter dated January 15, 1997, is attached.

186. Progress Report No. 57, for the Potomac Yard Site,January 1, 1997, through January 31, 1997, prepared byEarth Tech Remediation Services, 2/13/97. P. 109036-109045. A February 13, 1997, transmittal letter isattached.

187. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. WilliamJ. Skrabak, AHD, re: Response to the December 31, 1996,action memorandum entitled "Request for Approval ofRemoval Action at the Potomac Yard Site in the City ofAlexandria, and Arlington County, Virginia," 2/26/97.P. 109046-109046.

188. Progress Report No. 58, for the Potomac Yard Site,February 1, 1997, through February 28, 1997, preparedby Earth Tech Remediation Services, 3/13/97.P. 109047-109054. A March 13, 1997, transmittal letteris attached.

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189. Letter to Mr. William J. Skrabak, AHD, from Mr. JefferyA. Dodd, U.S. EPA, re: Correspondence discussing theEPA request for additional sampling, 3/18/97.P. 109055-109055.

190. Progress Report No. 59, for the Potomac Yard Site,March 1, 1997, through March 31, 1997, prepared byEarth Tech Remediation Services, 4/13/97. P. 109056-109063. An April 13, 1997, transmittal letter isattached.

191. Progress Report No. 60, for the Potomac Yard Site,April 1, 1997, through April 30, 1997, prepared byEarth Tech Remediation Services, 5/13/97. P. 109064-109071. A May 13, 1997, transmittal letter isattached.

192. Progress Report No. 61, for the Potomac Yard Site, May1, 1997, through May 31, 1997, prepared by Earth TechRemediation Services, 6/13/97. P. 109072-109079. AJune 13, 1997, transmittal letter is attached.

193. Progress Report No. 62, for the Potomac Yard site, June1, 1997, through June 30, 1997, prepared by Earth TechRemediation Services, 7/13/97. P. 109080-109087. AJuly 13, 1997, transmittal letter is attached.

194. Letter to Mr. Scott Slagely, Commonwealth Atlantic LandV, Inc., from U.S. EPA, re: Notification of EPA'sdisapproval of the Offsite Ecological RiskAssessment(OERA), 7/22/97. P. 109088-109092.

195. Letter to Ms. Joan Becker-Kelsch, Arlington CountyDepartment of Environmental Services (ACDES), from Mr.Jeffrey A Dodd, U.S. EPA, re: Comments furtheraddressing the ACDES concern over the consumption offish from Four Mile Run and the Potomac River, 7/25/97.P. 109093-109094.

196. Letter to Mr. William J. Skrabak, Alexandria HealthDepartment (AHD), from Mr. Jeffrey A. Dodd, U.S. EPA,re: Comments further addressing the City of AlexandriaHealth Department concerns over consumption of fishfrom Four Mile Run and the Potomac River, 7/25/97.P. 109095-109096.

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197. Letter to Pat McMurray, VDEQ, from Mr. Jeffrey A. Dodd,U.S. EPA, re: Comments and Concerns over theconsumption of fish from Mile Run and the PotomacRiver, 7/25/97. P. 109097-109098.

198. Letter to Ms. Karen W. Melvin, U.S. EPA, from Mr.Channing J. Martin, Williams, Mullen, Christian &Dobbins, re: Comments on the OERA for Potomac Yard,7/31/97. P. 109099-109100.

199. Report: Sampling Report,(undated). P. 109101-109108.

200. Letter to Mr. Jeff Dodd, U.S. EPA, from Ms. Joan BeckerKelsch, Arlington County Department of EnvironmentalServices, re: Transmittal of comments on the Off-SiteEcological Risk Assessment for the Potomac Yard Site,4/10/97. P. 109109-109110.

201. Letter to Mr. Jeff Dodd, U.S. EPA, from Mr. WilliamSkrabak, Alexandria Health Department, re: Transmittalof comments on the Off-Site Ecological Risk Assessmentfor the Potomac Yard Site, 4/21/97. P. 109111-109112.

202. Report: Progress Report No. 61, Potomac Yard Site,prepared by Earth Tech, Inc., 6/13/97. P. 109113-109120. A June 13, 1997, letter to Mr. Jeff Dodd, U.S.EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aJune 5, 1997, letter to Mr. Jay Green, VDEQ, from Ms.Kristin Bright, Earth Tech, Inc., transmitting a May1997, Free Product Removal Report; and a May 1997, FreeProduct Removal Report, are attached.

203. Report: Progress Report No. 62, Potomac Yard Site.prepared by Earth Tech, Inc., 7/13/97. P. 109121-109128. A July 13, 1997, letter to Mr. Jeff Dodd, U.S.EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aJuly 5, 1997, letter to Mr. Jay Green, VDEQ, from Ms.Bettina Rayfield, Earth Tech, Inc., transmitting a June1997, Free Product Removal Report; and a June 1997,Free Product Removal Report, are attached.

204. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Jeff Dodd, U.S. EPA, re: Transmittalof EPA's comments on the Off-Site Ecological RiskAssessment for the Potomac Yard Site, 7/22/97.P. 109129-109137.

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205. Letter to Mr. William Skrabak, Alexandria HealthDepartment, from Mr. Jeffrey Dodd, U.S. EPA, re:Response to concerns about the potential health effectsresulting from the consumption of fish from Four MileRun and the Potomac River in the vicinity of thePotomac Yard Site, 7/25/97. P. 109138-109139.

206. Letter to Pat McMurray, VDEQ, from Mr. Jeffrey Dodd,U.S. EPA, re: Response to concerns about the potentialhealth effects resulting from the consumption of fishfrom Four Mile Run and the Potomac River in thevicinity of the Potomac Yard Site, 7/25/97. P. 109140-109141.

207. Letter to Ms. Joan Becker-Kelsch, Arlington CountyDepartment of Environmental Services, from Mr. JeffreyDodd, U.S. EPA, re: Response to concerns about thepotential health effects resulting from the consumptionof fish from Four Mile Run and the Potomac River in thevicinity of the Potomac Yard Site, 7/25/97. P. 109142-109143.

208. Letter to Ms. Karen Melvin, U.S. EPA, from Mr. ChanningMartin, Williams, Mullen, Christian & Dobbins, re:Request for a meeting to discuss EPA7s comments on theOff-Site Ecological Risk Assessment, 7/31/97.P. 109144-109145.

209. Report: Progress Report No. 63, Potomac Yard Site,prepared by Earth Tech, Inc., 8/13/97. P. 109146-109155. An August 13, 1997, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; anAugust 5, 1997, letter to Mr. Jay Green, VDEQ, from Ms.Bettina Rayfield, Earth Tech, Inc., transmitting a July1997, Free Product Removal Report; and a July 1997,Free Product Removal Report, are attached.

210. Report: Progress Report No. 64, Potomac Yard Site,prepared by Earth Tech, Inc., 9/12/97. P. 109156-109163. A September 13, 1997, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aSeptember 5, 1997, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield, Earth Tech, Inc., transmitting anAugust 1997, Free Product Removal Report; and an August1997, Free Product Removal Report, are attached.

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211. Report: Progress Report No. 65, Potomac Yard Site,prepared by Earth Tech, Inc., 10/13/97. P. 109164-109171. An October 13, 1997, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; anOctober 7, 1997, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield, Earth Tech, Inc., transmitting aSeptember 1997, Free Product Removal Report; and aSeptember 1997, Free Product Removal Report, areattached.

212. Report: Progress Report No. 66, Potomac Yard Site,prepared by Earth Tech, Inc., 11/13/97. P. 109172-109179. A November 13, 1997, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aNovember 6, 1997, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield, Earth Tech, Inc., transmitting anOctober 1997, Free Product Removal Report; and anOctober 1997, Free Product Removal Report, areattached.

213. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Jeffrey Dodd, U.S. EPA, re;Transmittal of EPA7 s comments on the revised Off-SiteEcological Assessment, 12/2/97. P. 109180-109182.

214. Report: Progress Report No. 67, Potomac Yard Site,prepared by Earth Tech, Inc., 12/12/97. P. 109183-109191. A December 12, 1997, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aDecember 5, 1997, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield, Earth Tech, Inc., transmitting aNovember 1997, Free Product Removal Report; and aNovember 1997, Free Product Removal Report, areattached.

215. Report: Off-Site Ecological Assessment for the PotomacYard Site, Arlington County and City of Alexandria,Viraina, prepared by The Weinberg Group, Inc.,12/29/97. P. 109192-109290. A December 29, 1997,transmittal letter to Mr. Jeffrey Dodd, U.S. EPA, fromMs. Judy Durda, The Weinberg Group Inc., is attached.

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216. Report: Progress Report No. 68. Potomac Yard Site,prepared by Earth Tech, Inc., 1/13/98. P. 109291-109298. A January 11, 1998, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aJanuary 5, 1998, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield. Earth Tech, Inc., transmitting aDecember 1997, Free Product Removal Report; and aDecember 1997, Free Product Removal Report, areattached.

217. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Jeffrey Dodd, U.S. EPA, re:Notification that the Respondent has met all of theterms related to the performance of work as specifiedin Section VIII of the Consent Order, 2/9/98.P. 109299-109300.

218. Report: Progress Report No. 69, Potomac Yard Site,prepared by Earth Tech, Inc., 2/11/98. P. 109301-109308. A February 11, 1998, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aFebruary 5, 1998, letter to Mr. Jay Green, VDEQ, fromMs. Bettina Rayfield. Earth Tech, Inc., transmitting aJanuary 1998, Free Product Removal Report; and aJanuary 1998, free product removal report, areattached.

219. Report: Progress Report No. 70, Potomac Yard Site,prepared by Earth Tech, Inc., 3/11/98. P. 109309-109316. A March 11, 1998, letter to Mr. Jeff Dodd,U.S. EPA, from Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., transmitting the progress report; aMarch 5, 1998, letter to Mr. Jay Green, VDEQ, from Ms.Bettina Rayfield, Earth Tech, Inc., transmitting aFebruary 1998, Free Product Removal Report; and aFebruary 1998, Free Product Removal Report, areattached.

220. Location map for the Potomac Yard Site entitled,"Figure 3-1: Current Drainage Conditions for NorthYard and North Yard Tail," prepared by Earth Tech,Inc., 1/30/96. P. 109317-109317.

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221. Table entitled, "Data Summary for Inorganic Compounds,"10/9/96. P. 109318-109319. An October 9, 1996 tableentitled, "Data Summary for Semi-Volatile OrganicCompounds," is attached.

222. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. Channing'Martin, William, Mullen, Christian & Dobbins, re:Request for copy of the Administrative Order byConsent, 3/6/97. P. 109320-109322. A March 11, 1997,letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. ScottSlagley, Commonwealth Atlantic Properties, Inc.,responding to a request for information regardingCommonwealth Atlantic Properties Inc. and a February19, 1999, routing and transmittal slip to Mr. DanielMcGoldrick, U.S. EPA, from Mr. Jeffrey Dodd, U.S. EPA,are attached.

223. Report: Work Plan for Potomac Yard Removal Action,prepared by Earth Tech, Inc., 4/28/97. P. 109323-109393. An April 28f 1997, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Robert Jennings,Earth Tech, Inc., is attached.

224. Memorandum to Ms. Cynthia Sale from Mr. Jeffrey Dodd,U.S. EPA, re: Request for comments on the Work Planfor Potomac Yard Removal Action, 5/16/97. P. 109394-109401. The following are attached:

a) a May 16, 1997, memorandum to Pat McMurrayfrom Mr. Jeffrey Dodd, U.S. EPA, requestingcomments on the Work Plan for the PotomacYard Removal Action;

b) a May 16, 1997, memorandum to Ms. JoanBecker-Kelsch from Mr. Jeffrey Dodd, U.S.EPA, requesting comments on the Work Plan forthe Potomac Yard Removal Action;

c) a May 16, 1997, memorandum to Mr. BillSkrabak from Mr. Jeffery Dodd, U.S. EPA,requesting comments on the Work Plan for thePotomac Yard Removal Action;

d) four May 16, 1997, facsimile journal sheets.

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225. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. WilliamSkrabak, Virginia Department of Health, re: Commentson the Work Plan for the Potomac Yard Removal Action,6/16/97. P. 109402-109404.

226. Letter to Mr. Jeffrey Dodd, U.S. EPA, from HironmoySikdar, Roy F. Weston. Inc. re: Transmittal of aTechnical Review Document for the Work Plan for thePotomac Yard Removal Action, 6/26/97. P. 109405-109407. The Technical Review Document is attached.

227. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Jeffrey Dodd, U.S. EPA, re: Commentsregarding the Work Plan for the Potomac Yard RemovalAction, 7/7/97. P. 109408-109412.

228. Letter to Mr. Daniel McGoldrick, U.S. EPA, from Mr.Samuel Baughman, Roy F. Weston, Inc., re: Comments onthe Response Action Plan, 12/9/97. P. 109413-109415.An April 3, 1998, facsimile transmittal sheet to Mr.Daniel McGoldrick, U.S. EPA, from Hironmoy Sikdar, RoyF. Weston, Inc., is attached.

229. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Abraham Ferdas, U.S. EPA, re:Transmittal of the Administrative Order for the PotomacYard Site, 2/18/98. P. 109416-109416.

230. Letter to Ms. Erica Dameron, Virginia Department ofEnvironmental Quality, from Mr. Abraham Ferdas, U.S.EPA, re: Transmittal of the Administrative Order forthe Potomac Yard Site, 2/18/98. P. 109417-109417.

231. Memorandum to Mr. W. Michael McCabe, U.S. EPA, from Mr.Abraham Ferdas, U.S. EPA, re: Transmittal of theAdministrative Order by Consent for the Potomac YardSite, 2/18/98. P. 109418-109419.

232. Administrative Order by Consent for the RemovalResponse Action in the Matter of: The Potomac YardSite, Commonwealth Atlantic Land V, Inc., Docket No.III-97-87-DC, 2/18/98. P. 109420-109450.

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233. Letter to Mr. Jeffrey Dodd, U.S. EPA, from Mr. ScottSlagley, Commonwealth Atlantic Land V, Inc., re:Request for EPA's approval of Earth Tech as developerof the Response Action Plan, 2/23/98. P. 109451-109452. A January 29, 1999, routing and transmittalslip to Mr. Daniel McGoldrick, U.S. EPA, from Mr.Jeffrey Dodd, U.S. EPA, is attached.

234. Report: Revised Response Action Plan for Potomac Yard,prepared by Earth Tech Inc., 3/16/98. P. 109453-109522. A March 16, 1998, transmittal letter to Mr.Jeffrey Dodd, U.S. EPA, from Mr. Robert Jennings, EarthTech, Inc., is attached.

235. Letter to Mr. Daniel McGoldriclc, U.S. EPA, fromHironmoy Sikdar, Roy F. Weston, Inc., re: Transmittalof the Technical Review Document for the RevisedReponse Action Plan, 3/26/98. P. 109523-109527. AnApril 3, 1998, facsimile transmittal memorandum to Mr.Daniel McGoldrick, U.S. EPA, from Hironmoy Sikdar, RoyF. Weston, Inc., and the Technical Review Document, areattached.

236. Report: Progress Report No. 71, Potomac Yard Site,prepared by Earth Tech, Inc., 4/13/98. P. 109528-109536. An April 13, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Land V, Inc.; an April 3, 1998,Free Product Removal Report; and an April 3, 1998,transmittal letter to Mr. J.D. Green, VDEQ, from Ms.Bettina Rayfield, Earth Tech, Inc., are attached.

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237. Facsimile transmittal memorandum to Mr. DanielMcGoldrick, U.S. EPA, from Hironmoy Sikdar, Roy F.Weston, Inc., re: Transmittal of information regardingthe Potomac Yard Site, 4/24/98. P. 109537-109544. Thefollowing are attached:

a) an undated chart entitled, "Potomac GreensSediments;"

b) a figure entitled, "Figure 2: Sample LocationMap, Potomac Yard Site;"

c) an October 9, 1996, table entitled, "DataSummary for Semi-Volatile Organic Compounds;"

d) an October 9, 1996, table entitled, "DataSummary for Inorganic Compounds."

238. Report: Progress Report No. 1, Potomac Yard Site,prepared by Earth Tech, Inc., 5/13/98. P.109545-109547. A May 13, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Properties, Inc., is attached.

239. Report: Progress Report No. 2, Potomac Yard Site,prepared by Earth Tech, Inc., 6/12/98. P. 109548-109550. A June 12, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Properties, Inc., is attached.

240. Letter to Mr. Scott Slagley, Commonwealth Atlantic LandV, Inc., from Mr. Daniel McGoldrick, U.S. EPA, re:Comments on the Revised Response Action Plan, 6/18/98.P. 109551-109553. A certified mail receipt isattached.

241. Report: Progress Report, Potomac Yard, June 1998,prepared by Earth Tech, Inc., 7/13/98. P. 109554-109556. A July 13, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Properties, Inc., is attached.

242. Report: Revised Response Action Plan for Potomac Yard,prepared by Earth Tech, Inc., 7/23/98. P. 109557-109627. A July 23, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Robert Jennings,Earth Tech, Inc., is attached.

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243. Letter to Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., from Mr. Daniel McGoldrick, U.S. EPA,re: EPA's approval of the Revised Response ActionPlan, 8/11/98. P. 109628-109629. A certified mailreceipt is attached.

244 . Report: Progress Report, Potomac Yard. July 1998,prepared by Earth Tech, Inc., 8/13/98. P. 109630-109632. An August 13, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Properties, Inc., is attached.

245. Letter to Mr. Daniel McGoldrick, U.S. EPA, from Mr.Scott Slagley, Commonwealth Atlantic Properties, Inc.,re: Notification that implementation of the ResponseAction Plan will be delayed, 8/25/98. P. 109633-109633.

246. Report: Narrative Cost Summary Report. Potomac Yard,MD, Removal Order Costs from 9/22/92 to 2/9/98,prepared by U.S. EPA, 9/3/98. P. 109634-109685. ASeptember 3, 1998, transmittal letter to Ms. SusanBuffington, RF&P Railroad Company and Mr. ChanningMartin, Williams, Mullen, Christian & Dobbins, fromBarbara Borden, U.S. EPA, and a September 30, 1998,routing and transmittal slip to Mr. Daniel McGoldrick,U.S. EPA, from Mr. Jeffrey Dodd, U.S. EPA, areattached.

247. Letter to Mr. Daniel McGoldrick, U.S. EPA, from Mr.Robert Jennings, Earth Tech, Inc., re: Notificationthat field activities to implement the Response ActionPlan will begin on September 15, 1998, 9/10/98. P.109686-109687. A September 10, 1998, facsimiletransmittal sheet to Mr. Daniel McGoldrick, U.S. EPA,from Mr. Robert Jennings, Earth Tech, Inc., isattached.

248. Report: Progress Report, Potomac Yard, August 1998,prepared by Earth Tech, Inc., 9/11/98. P. 109688-109690. A September 11, 1998, transmittal letter toMr. Daniel McGoldrick, U.S. EPA, from Mr. ScottSlagley, Commonwealth Atlantic Properties, Inc., isattached.

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249. Report: Progress Report, Potomac Yard, September 1998,prepared by Earth Tech, Inc., 10/13/98. P. 109691-109693. An October 13, 1998, transmittal letter to Mr.Daniel McGoldrick, U.S. EPA, from Mr. Scott Slagley,Commonwealth Atlantic Land V, Inc., is attached.

250. Report: Progress Report, Potomac Yard, October 1998,prepared by Earth Tech, Inc., 11/13/98. P. 109694-109695.

251. Report: Interim Final Report for Potomac Yard RemovalResponse Action, prepared by Earth Tech, Inc.,11/13/98. P. 109696-109735. A transmittal letter toMr. Daniel McGoldrick, U.S. EPA, from Mr. RobertJennings, Earth Tech, Inc., is attached.

252, Letter to Mr. Scott Slagley, Commonwealth AtlanticProperties, Inc., from Mr. Daniel McGoldrick, U.S. EPA,re: Notification of EPA's approval of the InterimFinal Report for the Potomac Yard Removal ResponseAction, 3/25/99. P. 109736-109736.

253. Letter to EPA Region III Superfund Accounting from Mr.Scott Slagley, Commonwealth Atlantic Properties, Inc.,re: Transmittal of Commonwealth Atlantic Land V,Inc.'s payment for oversight costs at the Potomac YardSite, 4/1/99. P. 109737-109739. A March 31, 1999,payment check and a certified mail receipt areattached.

254. Letter to Mr. Daniel McGoldrick, U.S. EPA, from Mr.Robert Jennings, Earth Tech, Inc., re: Notification ofa revised schedule for Quarterly Stormwater Monitoringactivities at the Potomac Yard Site, 5/4/99.P. 109740-109740.

255. Report: Itemized Cost Summary Report, Potomac Yard,MD, Scores Report Version 3 Costs from 2/18/98 to4/30/99, prepared by U.S. EPA, 6/3/99. P. 109741-109750. A June 4, 1999, routing and transmittal slipto Mr. Daniel McGoldrick, U.S. EPA, from Ms. HattieWaters, U.S. EPA, is attached.

256. Newspaper article entitled, "Potomac Yard Deal NixesInterchange on Parkway," The Journal, (undated).P. 109751-109752.

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