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HomeMy WebLinkAboutNCD000813592_19991020_GA-Pacific Corp Hdwd Saw_FRBCERCLA C_Final Rule-OCR·•i· UNITED STATES'i°:NVIRONMENTAL PROTECTION AGENCY REGION 4 ATLANTA FEDERAL CENTER 61 FORSYTH STREET ATLANTA; GEORGIA 30303-8960 OCT 2 0 1999 Mr. Jack Butler North Carolina Division Waste Management North Carolina Department of Environmental, and Natural Resources P.O. Box 29603 Raleigh, North Carolina 27611 SUBJ: National Priorities List Proposed Rule #30 Final Rule #26 Dear Mr. Butler: RECEIVED OCT 26 1999 SUPERFUND SECTION The Agency plans to announce on October 21, 1999, in the Federal Register, Proposed Rule #30 and Final Ru!e #26 to the National Priorities List (NPL). This rule proposes to add 9 sites to the NPL and finalizes 10. The Region 4 sites are as follows: Proposed Rule #30: 1. Trans Circuits, Palm Beach County, Florida 2. Macalloy Corporation, Charleston County, South Carolina Final Rule #26: 1. Georgia-Pacific Corp. Hardwood Sawmill, Washington County, North Carolina Various background and supplementary information pertaining to the rule is located on the Internet. The information can be accessed from the Superfund homepage under 'What's New• and 'Auxiliary Information•. The exact addresses are listed below. Map with clickable States with a link to narrative summaries and FR notices: http://www.epa.gov/superfund/sites/npl/npl.htm :-1ap witi;, clicko.ble Si....at.1::::;; wiLh a llnk t:o Regionai fact sneets: http://www.epa.gov/superfund/sites/nplsites/index.htm If you have any questions, please contact me at 404/562-8817. CC: Mr. Dan LaMontagne, NCDENR Sincerely, ~-~~£1GV1~- Region 4, NPL Coordinator Site Assessment Process Owner Internet Address (URL) • http://www.epa.gov Recycled/Recyclable• Printed with Vegetable Oil Based Inks on Recyded Paper (Minimum 25%. Postconsumer) • • NARRATIVE SUMMARY The Georgia-Pacific Corporation Hardwood Sawmill, EPA ID No. NCD000813592, comprises approximately 24.11 acres. The facility is located on Plywood Drive along the Roanoke River in Plymouth, Washington County, North Carolina. Atlas Plywood Company owned this tract of property prior to 1950, and operations at the property prior to then are unknown. Around 1950, Georgia-Pacific Corporation purchased the property. All of the existing structures were torn down, and a new facility was built. Operations at the new facility included the production of hardwood lwnber and railroad ties. Wood treating operations at the facility included the use of pentachlorophenol and lindane. Georgia-Pacific Corporation Hardwood Sawmill filed a Resource Conservation and Recovery Act (RCRA) Part A application on November 12, 1980. The facility was listed under RCRA as a large quantity generator and storer of hazardous waste. However, in August 1982, the facility was deleted as a large quantity generator and.storer, and added as a small quantity generator. The main area of concern at the Georgia-Pacific Corporation Hardwood Sawmill is the area of contaminated soil around the conveyor belt and dip vat area. A 1981 RCRA inspection noted that wood treatment chemicals were dripping off the treated wood, directly onto the ground. These included a wood fungicide and insecticide. The wood fungicide is known to have contained pentachlorophenol, and the insecticide is known to have contained lindane. Reportedly, the waste product that had spilled onto the ground was removed and burned in the on-site boilers. During renovation operations in 1983, the entire facility burned and was permanently closed. In 1985, the property was sold to Decatur Partnerships based out of Kitty Hawk, North Carolina. Decatur Partnerships is the current owner of the property. For a brief period of time, Decatur Partnerships leased a portion of the south end of the property to Outerbanks Contractors, which used this portion of land as an asphalt mixing plant. The entire property is presently unoccupied. Although access to the property is restricted by a gS.ted entrance, there is evidence of trespassing. In June 1995 the· North Carolina Department of Environment, Heal th and Natural Resources, Division of Waste Management conducted an expanded site inspection (ESI) at the facility. Soil samples collected from the dip vat area during the ESI contained elevated concentrations of contaminants attributable to site processes. The entire surface water Pathway along the Roanoke River to Albermarle Sound is fished both commercially and recreationally. Level II concentrations of arsenic and 2,3,7,8-tetrachlorodibenzofuran have been identified in this fishery. Additionally, the wetlands contiguous to this segment of the river were evaluated as Level II. • • HRS DOCUMENTATION RECORD--REVIEW COVER SHEET Name of Site: EPA ID No.: Contact Persons Georgia-Pacific Corporation Hardwood Sawmill NCD000813592 U.S. Environmental Protection Agency (EPA), Region 4: Ken Mallary, Remedial Project Manager Cynthia Gurley, NPL Coordinator Expanded Site Inspection: (404) 562-8802 G. Doug Rumford, Hydrogeologist (919) 733-2801 North Carolina Superfund Section North Carolina Department of Environment, Health and Natural Resources (DEHNR) Documentation Record: Paul F. Moisan, Project Manager . (770) 717-2304 Tetra Tech EM Inc., Superfund Technical Assessment and Response Team (START) Pathways, Components, or Threats Not Evaluated The groundwater migration and air migration pathways were not scored in this evaluation because these pathways are not expected to significantly contribute to the overall site score. Although groundwater samples were collected, an observed release to groundwater was not scored. No air samples have been collected to document a release to ambient air. Although surface soil contamination has been identified throughout the facility property and adjacent properties, a significant nwnber of soil exposure targets have not been identified for this pathway. . i·)· ';, i!ll~. • Name of Site: HRS DOCUMENTATION RECORD Georgia-Pacific Corporation Hardwood Sawmill EPA Region: 4 Date Prepared: October 22, 1999 Address of Site: Plywood Drive, Plymouth County and State: Washington County, North Carolina General Location in the State: Northeastern North Carolina Topographic Maps: Plymouth East, North Carolina 1954 (Photorevised 1974) Geographical coordinates for Source No. 1 were calculated from the easternmost point of the main building on the facility property, where the dip vat was located when operations were still ongoing (Refs. 3; 4, p. E-9): Source No. 1 -Contaminated Soil 35°52'28.0" North Latitude 76°44'27.26" West Longitude Scores Air Pathway Ground Water Pathway Soil Exposure Pathway Surface Water Pathway HRS SITE SCORE 1 Not Scored Not Scored Not Scored 100 50 ( 1. 2a. 2b. 2c. 3. 4. 5. 6. • • WORKSHEET FOR COMPUTJ:NG HRS SJ:TE SCORE Ground Water Migration Pathway Score (S ) (from Table 3-1, line 13) ,,, Surface Water Overland/Flood Migration Component (from Table 4-1, line 30) Ground Water to Surface Water Migration Component (from Table 4-25, line 28) _s_ s' Not Scored· 100 10,000 Not Scored surface Water Migration Pathway Score (Ssw) 100 Enter the larger of lines 2a and 2b as the pathway score. 10,000 Soil Exposure Pathway Score (S,) (from Table 5-1, line 22) Air Migration Pathway Score (S8 ) (from Table 6-1, line 12) Total of s 2 + s 2 + s.' + s,' qw SW HRS Site Score Divide the value on line 5 by 4 and take the square root 2 Not Scored Not Scored 10,000 50 Site Name: Location: Georgia-Paci.orporation Hardwood Sawmill Plymouth, Washington County, North Carolina • SURFACE WATER OVERLAND/FLOOD MIGRATION COMPONENT SCORESHEET Factor Categories and Factors Maximum Value Value Assigned DRINKING WATER THREAT Likelihood of Release I. Observed Release 550 550 2. Potential to Release by Overland Flow 2a. Containment 10 2b. Runoff 25 2c. Distance to Surface Water 25 2d. Potential to Release by Overland Flow (lines 2a x [2b + 2c]) 500 3. Potential to Release by Flood 3a. Containment (Flood) 10 3b. Flood Frequency 50 3c. Potential to Release by Flood (lines 3a x 3b) 500 4. Potential to Release (lines 2d + 3c, subject to a maximum of 500) 500 5. Likelihood of Release (higher of lines I and 4) 550 Waste Characteristics 6. Toxicity/Persistence 10000 7. Hazardous Waste Quantity 100 8. Waste Characteristics 100 Targets 9. Nearest Intake 50 0 10. Population I0a. Level I Concentrations b 0 !Ob. Level II Concentrations b 0 I0c. Potential Contamination b 0 I0d. Population (lines I0a +!Ob+ IOc) b 0 11. Resources 5 5 12. Targets (lines 9 + I 0d + 11) b Drinking Water Threat Score 13. Drinking Water Threat Score ([lines 5 x 8 x 12]/82,500, subject to a maximum of I 00) 100 3 550 32 5 1.07 • • Site Name: Georgia-Pacific Corporation Hardwood Sawmill Location: Plymouth. Washington County, North Carolina SURFACE WATER OVERLAND/FLOOD MIGRATION COMPONENT SCORESHEET, Continued Factor Categories and Factors HUMAN FOOD CHAIN THREAT Likelihood of Release 14. Likelihood of Release ( value from line 5) Waste Characteristics 15. Toxicity/Persistence/Bioaccumulation 16. Hazardous Waste Quantity 17. Waste Characteristics Targets 18. Food Chain Individual 19. Population 19a. Level I Concentrations 19b. Level II Concentrations 19c. Potential Human Food Chain Contamination 19d. Population (lines 19a + 19b + 19c) 20. Targets (lines 18 + 19d) Human Food Chain Threat Score 21. Human Food Chain Threat Score ([lines 14 x 17 x 20]/82,500, subject to a maximum of 100) ENVIRONMENTAL THREAT Likelihood of Release 22. Likelihood of Release (value from line 5) Waste Characteristics 23. Ecosystem Toxicity/Persistence/ Bioaccumulation 24. Hazardous Waste Quantity 25. Waste Characteristics Maximum Value 550 1,000 50 b b b b b 100 550 1,000 4 Value Assigned __ 51\.lit 100 45 0 0.03 0.00 0.03 550 45.03 96.06 550 320 • • Site Name: Georgia-Pacific Corporation Hardwood Sawmill Location: Plymouth, Washington County, North Carolina SURF ACE WATER OVERLAND/FLOOD MIGRATION COMPONENT SCORESHEET, Concluded Factor Categories and Factors ENVIRONMENTAL THREAT (Concluded) Targets 26. Sensitive Environments 26a. Level I Concentrations 26b. Level II Concentrations 26c. Potential Contamination 26d. Sensitive Environments (lines 26a + 26b + 26c) 27. Targets (value from line 26d) Environmental Threat Score 28. Environmental Threat Score ([lines 22 x 25 x 27]/82,500, subject to a maximum of 60) Maximum Value Value Assigned b 0 b 25 b 0.01 b 25.01 b 25.01 60 53.35 SURFACE WATER OVERLAND/FLOOD MIGRATION COMPONENT SCORE FOR AW ATERSHED 29. Watershed Score' (lines 13 + 21 + 28, subject to a maximum of I 00) 100 SURFACE WATER OVERLAND/FLOOD MIGRATION COMPONENT SCORE 30. Component Score (S,,)' (highest score from line 29 for all watersheds evaluated, subject to a maximum of 100) 100 Maximum value applies to waste characteristics category. Maximum value not applicable. Do not round to nearest integer. Not evaluated. 5 JOO 100 SCALE 1: 24,000 ' 0 i·,1OD1FIED FROM USGS 7 .5 MINUiE QUADRANGLE MAF: PLYMOUTH EAST. NORTH CAROLINA. I 954. PHOTOREVISED 197<1 1/2 ' l MILE GEORGIA-PACIFIC CORPORATION HARDWOOD SAWMILL LYMOUTH, WASHINGTON COUNTY, NORTH CAROLINA EPA ID No. NCD0008 I3592 TDD No. 9707-0007 FIGURE l SITE LOCATION tv!AP 6 HUFF ISLAND (WETLANDS) LEGEND / / fr-- FLOW • SOIL SAMPLE LOCATION FORMER STRUCTURES -----TREELINE ----DRAINAGE DITCH -. -PROPERTY LINE /r--/ / ROANOKE RIVER /2 r \, \ \\ I ., \\ I ·\ \\ D_!:.E(CE \\ u I ., \\ I ', I \ \.. ~ 8 · t01LER 1/ HDUSE ~STACKS SHOP MACHIN~ MODIFIED FROM BL.ASLAND, BOUCK S. LEE, INC., PLYMOUTH SITE WORK PLAN, JANUARY 1998 ' ' ' I I I I l I I I i I ( : BUl9f ·' . ( r ' ' \ ) I .i O' 200' APPROXIMATE SCALE GEORGIA-PACIFIC CORPORATION HARDWOOD SAWMILL PL YHOUTH, WASHINGTON COUNTY, NORTH CAROLINA TDD No. 9707--0007 EPA ID No. NCD000815592 FIGURE 2 -FACILITY LAYOUT MAP TETRA TECH EM INC. START • • 0, HUFF ISLAND (WFrLANDS) ,1,. ~ /,- FLOW PPE No. LEGEND • SOIL SAMPLE LOCATION FORMER SlRUCTURES ---._ TREELINE ----DRAINAGE DITCH -. -PROPERTY LINE / / /,--~/ / ROANOKE RIVER ( .I I \\ \ \\ I ·I ~\ .I I /2 ~--PPE No.2 ',. ',"-', · GP--002-SL-._ ' ' ' \ ' I I I I ) O' 200' 400' t::====l::::===:i APPROXIMATE SCALE GEORGIA-PACIFIC CORPORATION HARDWOOD SAWMILL PLYMOUTH, WASHINGTON COUNTY, NORTH CAROLINA TDD No. 9707-0007 EPA ID No. NC0000813692 FIGURE 3 SOURCE SAMPLE -LOCATION MAP PPE PROBABLE POINT OF EN MODIFIED FROM BlASLJIND, BOUCK 4 LEE, INC., PL YMOUlH SITE WORK PIAN, JANUARY 1988 TETRA TECH EM INC, START .. • • --. _, ·.-' . •,·-·- L.~:- ,, ,,, ; -. :J .:.. -__ , -;"; -· ---~ . ,, PEN WifiJ F -.,,::, . :::~~--' ;"'/4~::-::-.1 SCALE 1: 24,00J () U.S. DEPARTMENT OF THE INTERIOR 'Fis~· A..:,1o··w·;Lo"uFE SER~CE · . ~,;.-L~ .. -...... · l"llrtM ·-, ...... -,.--.... . .,._, ....... 1/2 1 MILE ......~ .... "'"""' f' -f'AlVITlll .. l. •. .. ......... _,, ,y.:,-.... ""®m01 ... ; ____ .., __ ·-·-. ·-··· __ :,.__·· -. ---------------.. ,·----. _.., ~·-----.. --. ---- ·---·-·---~;-;-:=.::- ·'-=:.- WAHIIC11(M~ II. e-,o1_...., ,-... ... .:.... ,..,,.,.._.._ ,.._,,-~w .... 9 I ··----···- GEORGIA-PACIFIC CORPORATION HARDWOOD SAWMILL LYMOLITH. WASHINGTON COUITTY, NORTII CAROLINA EPA lD No. NCD000813592 TDD No. 9707-0007 • FIGURE4 €::\ ' SURFACE WATER AND SEDNENT . --::. J SAMPLE LOCATION MAP ·-·~-_ijf . !"I • • REFERENCES Reference Number Description of the Reference 1. U.S. Environmental Protection Agency (EPA). 1990. System, 40 CFR Part 300, Appendix A, 55 FR 51533. 2 pages. Hazard Ranking December 14. Excerpt 2. U.S. Environmental Protection Agency. Superfund Chemical Data Matrix, Appendix B-1, June 1996. Excerpt 2 pages. 3. U.S. Geological Survey (USGS). 7.5-minute Series Topographic Quadrangle Maps of North Carolina: Plymouth East 1954 (Photorevised [PR] 1974); Plymouth West 1978 (Photoinspected [PI] 1987); Westover 1954 (PR 1978); Woodard 1976; Edenhouse 1982; Edenton 1981; Roper North 1954 (PR 1978), scale 1:24,000. 4. U.S. Environmental Protection Agency. Publication 9345.0-0lA, Guidance for Performing Preliminary Assessments Under CERCLA, Latitude and Longitude Calculation Worksheet, Appendix E, September 1991. Excerpt, 3 pages. 5. Potential Hazardous Waste Site Preliminary Assessment (EPA Form 2070- 12), Part I-Site Information and Assessment for Georgia-Pacific Corp.- Hardwood Sawmill. Filed by Grover Nicholson, North Carolina Division of Health Services, Solid & Hazardous Waste Branch, December 6, 1985. 2 pages. 6. Tom B. Stevens, Environmental Engineer, Eastern Wood Products Manufacturing Division, Georgia-Pacific Corporation. Letter to Ms. Lee Crosby, Chemist, North Carolina Division of Health Services, January 28, 1985. Subject: Erris Listing. 2 pages. 7. G. Doug Rumford, Hydrogeologist, North Carolina Superfund Section, State of North Carolina, Department of Environment, Health and Natural Resources, Division of Waste Management. Letter and attachments to Cynthia Gurley, North Carolina CERCLA Project Officer, U.S. Environmental Protection Agency, Region 4, Waste Management Division, January 13, 1997. Subject: Expanded Site Inspection, Georgia-Pacific Corp. Hardwood Sawmill (NCD000813592), Plymouth, Washington County, North Carolina. 165 pages. 8. Blasland, Bouck & Lee, Inc., "Plymouth Site Work Plan, Plymouth, North Carolina," (October 1997, Revised: January 1998). 157 pages. 9. G. Doug Rumford, Hydrogeologist, North Carolina Department of Environment, Health, and Natural Resources,. Division of Waste Management, Superfund Section. Memorandum to file for Georgia-Pacific Corp. Hardwood Sawmill, October 31, 1996. Subject, Historical information of facility in Plymouth. 1 page. 10. EPA Hazardous Waste Permit Application (EPA Form 3510-1) for Georgia- Pacific Corporation Hrwd. Sawmill, Plymouth, Washington County, North Carolina. Filed by Gerald Tice, Environmental Engineer, November 12, 1980. 7 pages. 11. o.w. Strickland, Head, Solid & Hazardous Waste Management Branch, Environmental Health Section, State of North Carolina, Department of Human Resources Division of Health Services. Letter to Gerald Tice, Georgia-Pacific Corporation Hardwood Sawmill, November 13, 1981.· subject: RCRA Inspection Violations. 1 page. 10 12. • • Gerald W. Tice, Senior Environmental Engineer, Southern Division, Georgia-Pacific Corporation. Letter to O.W. Strickland, Head, .solid & . Hazardous Waste Management Branch, ·Environmental Health Section, North Caro'lina Department of Human Reso~rces, Division of Health Services, November 30, 1981. Subject: Response to RCRA Inspection. 1 page. 13. U.S. Environmental Protection Agency, Office of Emergency and Remedial Response, "Using Qualified Data to Document an Observed Release and Observed Contamination, .. Fact Sheet No. EPA 540-F-94-028, (November 1996). 18 pages. 14. Deborah A. Vaughn-Wright, Region IV NPL Coordinator, U.S. Environmental Protection Agency. Letter and attachments to Katharine Siders Franklin, Dynamac Corporation, January 20, 1993. Subject: Contract Required Detection Limits and Contract Required Quantitation Limits. 9 pages. 15. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record Of telephone conversation with Doug Rumford, Hydrogeologist, North Carolina Division of Waste Management, Superfund Section, May 19, 1998. Subject: Drainage ditch around Georgia-Pacific Corporation Hardwood Sawmill, and probable points of entry into the Roanoke River. 1 page. 16. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), June 15, 1998. Subject: Analytical Data for Weyerhaeuser Company Site Inspection Prioritization Field Work. 119 pages. 17. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), June 15, 1998. Subject: Field Logbooks for North Carolina Department, Health, and Natural Resources, Division of Waste Management, Superfund Section Expanded Site Inspection field work conducted June 19- 20, 1995. Logbook A, 11 pages; logbook B, 8 pages; logbook C, 8 pages. 18. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of: telephone conversation with John Mcconney, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Region 4, November 23, 1998. Subject: Practical Quantitation Limits for Dioxin and Furan Samples. 1 page. 19. Greenhorne & O'Mara, Inc. 0 Phase II Screening Site Inspection Report, Georgia Pacific Corporation Hardwood Sawmill, Volume I," Prepared for the State of North Carolina, Department of Environment, Health, and Natural Resources, Division of Solid Waste Management, Superfund Section (February 1992). 55 pages. 20. G. Doug Rumford, Hydrogeologist, North Carolina Department of Environment, Health and Natural Resources, Division of Waste Management, Superfund Division. Memorandum to file, June 2, 1995. Subject: Use of facility property by Outerbanks Contractors. 1 page. 21. Fred Wood, District Sanitarian, North Carolina Division of Health services, RCRA Inspection Report, Georgia-Pacific Corporation Hardwood Sawmill, October 21, 1981. 2 pages. 22. Todd Paddock, "Dioxins and Furans: Where They Corne From," Academy of Natural Sciences, July 1989. 3 pages. 23. Marquita K. Hill, Ph.D., "Dioxin: Understanding the Issue," University of Maine, Cooperative Extension, Chemicals in the Environment Information Center, August 1997. 12 pages. 11 ·• ., . 24. • • Stacy Campbell, Geologist, Tetra Tech EM Inc. Record of telephone conversation with Kirn Hall, Environmental Tech 4, North Carolina Division of Water Quality, May 13, 1998. Subject: Uses of the Roanoke River downstream from Plymouth, North Carolina to Albermarle Sound. 1 page. 25. James W. Kornegay, Kent L. Nelson, "Roanoke River Sport Fishery Creel Survey, 1994-1996, Final Report," Coastal Fisheries Investigations, Federal Aid in Fish Restoration Project F-22 (North Carolina Wildlife Resources Commission Division of Inland Fisheries: Raleigh, North Carolina: 1997). 20 pages. 26. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of telephone conversation with Ken Mallary, Remedial Project Manager, U.S. Environmental Protection Agency, Region 4, June 8 1 1998. Subject: 27. Current Facility Status of Georgia-Pacific Corporation Hardwood Sawmill. 1 page. 1994-95 North Carolina Digest, effective July Resources Commission. Inland Fishing, Hunting & 1, 1994 to June 30, 1995, Excerpt, 3 pages. Trapping Regulations North Carolina Wildlife 28. Stacy Campbell, Geologist, Tetra Tech EM Inc. Record of telephone conversation with Pete Kornegay, Biologist, Marine Fisheries Department, North Carolina, May 13, 1998. Subject: Fishing· in the Roanoke River and Albermarle Sound. 1 page. 29. 30. U.S. Geological Survey, "Water Resources Data 1997, Volume 1. Surface-Water Records," U.S. Data Report NC-97-1 (Raleigh, North Carolina: North Carolina Water Year Geological Survey Water- 1998). Excerpt, 5 pages. G.L. Giese, H.B. Wilder and G.G. Parker, Estuaries and Sounds of North Carolina," Supply Paper 2221 (Alexandria, Virginia: Jr., "Hydrology of Major U.S. Geological Survey Water- GPO, 1985). Excerpt, 4 pages. 31. U.S. Department· of the Interior, Fish and-Wildlife Service, National Wetlands Inventory Maps of North Carolina, Woodard 1982, Westover 1982, Plymouth West 1982, Plymouth East 1982, Edenton 1982, Edenhouse 1982, Roper North 1982, scale 1:40,000. 32. U.S. Fish and Wildlife Service, Endangered and Threatened Species of the Southeastern United States (Atlanta, Georiga, 19921. Excerpt, 5 pages. 33. Stacy Campbell, Geologist, Tetra Tech EM Inc. Record of telephone conversation with Jerry Hollerman, Refuge Manager, Roanoke River Wildlife Refuge, May 14, 1998. Subject: Endangered species along the Roanoke River. 1 page. 34. Paul F. Moisan, Envirorunental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), October 22, 1998. Subject: Summary of "J-Qualified" Data for Source 1. 9 pages. 35. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), October 23, 1998. Subject: Summary of "J-Qualified" Data for Source 1 Background Concentrations. 2 pages. 36. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), October 23, 1998. Subject: Summary of "J-Qualified" Surface Water Observed Release Control Concentrations. 2 pages. 12 ·•1•~:, . .. -:,:·"' . :r~•::", ., .. ;i;.1,, t,-5Yr· ~-;,,-,:. ;•','\I• • .• r...'· ,. .. J· • • • 37. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of telephone conversation with Doug Rumford, Hyerogeologist, North Carolina Division of Waste Management, October 22, 1998. Subject, Depths of Surface Water and Sedime~t Samples Collected During Georgia-Pacific Corporation Hardwood Sawmill Expanded Site Inspection. 1 page. 38. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Project Note to File for Georgia-Pacific Corporation Hardwood Sawmill (4-9707- 0007), November 2, 1998. Subject, Summary of "J-Qualified" Surface Water Observed Release Concentrations. 3 pages. 39. North Carolina Department of Environment, Health and Natural Resources, Division of Solid Waste Management, Superfund Section, "Site Inspection Prioritization, Weyerhaeuser Co./Plyrnouth Wood Treating, NCD991278540, Plymouth, Martin County, North Carolina, Reference No. 03156," (June 1995). 23 pages. 40. Sandra J. Harrigan, Staff Scientist, Tetra Tech telephone conversation with Diane Guthrie, EPA, Ecosystem Support Division, September 16, 1998. information about the analytical servic'es that EM Inc. Record of Region 4, Science and Subject, General SESD provides. 1 page. 41. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of telephone conversation with Ken Mallary, Remedial ·PrOject Manager, EPA, Region 4, October 8, 1998. Subject, Facilities upstream of Georgia Pacific Corporation Hardwood Sawmill. 1 page. 42. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of telephone conversation with John Mcconney, U.S. Environmental Protection Agency, Science and Ecosystem Support Division, Region 4, January 5, 1999. Subject: Detection Limits for Dioxin and Furan Samples. 1 page. 43. Paul F. Moisan, Environmental Scientist, Tetra Tech EM Inc. Record of telephone conversation with Ken Mallary, Remedial Project Manager, EPA, Region 4, January 5, 1999. Subject: overland flow at the Georgia- Pacific Corporation Hardwood Sawmill. 1 page. 13 • 2.2 Source Characterization Number of the source: 1 --- • SD-Characterization and Containment Source No. : .1 SOURCE DESCRrPTrON Name and description of the source: Contaminated Soil Atlas Plywood Company conducted operations at the facility property prior to 1950. It was purchased by Georgia-Pacific Corporation ·around 1950 (Ref. 5, p. l; 6, p. 1). There is no known documentation of the operating practices employed by Atlas Plywood Company (Refs. 7, p. 5; 8, p. 2-1). When the Georgia-Pacific Corporation bought the property around 1950, all of the existing buildings were demolished and a new facility was constructed (Refs. 5, p. l; 6, p. 1). A fire occurred at the Georgia-Pacific Corporation Hardwood Sawmill in 1983, after which the facility was permanently closed (Refs. 5, p. 1; 6, p. 1; 9). From 1950 to 1980, operations at the facility included debarking, sawing, and planing rough lumber from logs. Raw rough wood was treated via passing through a dip vat located at the end of a conveyer system (Refs.7, p. 5; 8, p. 2-1; 10, p.2; 21, p.l). The raw wood was treated with solutions containing pentachlorophenol and other chlorophenols, and lindane (Ref. 21, p.l). Source No. 1 is an area of contaminated soil in the vicinity of the former conveyer system and dip vat (Refs. 11; 12; 21, ·p. 1). Soil in this area was contaminated from excess wood preservative dripping off the treated lumber (Ref. 21, p. 1). _Location of the source, ~ith reference to~ map of the site: Source No. 1, the area of contaminated soils around the former dip vat and conveyor area, is located in the central portion of the facility property, northeast of the former boiler. Elevated levels of constituents have been detected at four sampling locations in Source No. 1 (also see pages 15 -18 in this documentation record). The concentration of an analyte is considered elevated if the concentration is equal to or greater than three times the concentration in the background/control sample, or greater than or equal to the minimum quantitation limit (MQL) if the constituent is not detected in the background/control sample (Refs. 1, Table 2-3; 8, Figure 2-2; also see Figure 3 on page 8 in this documentation record). Containment: Release via overland migration and/or flood: No known surface water runoff control systems or runof_f management systems have been associated with the area of on-site contaminated soils. In addition, there is evidence that hazardous substances associated with this source are present in the Roanoke River (Ref. 7, Appendix A; also see pages 23 -58 in this documentation record). Containment Value: 10 Reference: 1, Section 4.1.2.1.2.1.1 14 • 2.4.1 Hazardous Substances p•~-~~~-~Hi.zr~o'\iS t, Slib""'St&nCe·• ·1~,z¼t!,Efsi~ i:,w, .. t\;,;:i3it4t ,,, ' ' . "'" . . . . ' _;;,w. ' %)), ·! ;Vt~¼-\:\;R,m:., mill Arsenic Chromium Copper Lead ·Nickel Zinc Pentachlorophenol Pyrene Alpha-BHC Delta-BHC Gamma-BHC (Lindane) PCB-1254 (Aroclor 1254) 2,3,7,8-Tetrachlorodibenzodioxin • SD-Characterization and Containment Source No. : 1 ~~~§~~itzlJW''iTir,tF~l!lv;n\t-~ WEviclence _µL ,3if!;~Jllff,;t,!iK1&it-~1¼0-ti:~)fill:C~)ji!J~f~?1 . , __ _ ...• :."'?\tl -d'" ~w., _ & __ ,:: . .,.sillrt( .-&_,!?., " •. ~ i!X&q~I'tTh''/;f<fif}iW:.~~ffl~ •j' •"f''"'\«.,\•'_""S, '¾•:!~ \.\ {/ -}Re erenc.en•, -"·~ ·'.£J GP-005-SL (48 mg/kg) 7, Appendix A, GP-006-SL (11 mg/kg) pp. 76, 77 GP-005-SL (130J* mg/kg) 7, Appendix A, pp. 71, 76; 13, p. 8; 34, p. 2 GP-004-SL (63J* mg/kg) 7, Appendix A, GP-005-SL (79J* mg/kg) pp. 71, 74, GP-006-SL (73J* mg/kg) 7 6, 77, 82; GP-007-SL (46 mg/kg) 13' p. 8; 34, p. 2 GP-004-SL (89 mg/kg) 7' Appendix A, GP-005-SL (120 mg/kg) pp. 76, 77, 82 GP-006-SL (55 mg/kg) GP-004-SL (34J* mg/kg) 7, Appendix A, GP-005-SL (58J* mg/kg) pp. 71, 72, GP-006-SL (l0J* mg/kg) 76, 77, 82; 13' pp. 8' 9; 34, p. 2 GP-004-SL (340J* mg/kg) 7' Appendix A, GP-005-SL (440J* mg/kg) pp. 71, 76, GP-006-SL (140J* mg/kg) 77, 82; 13' p. 8; 34, p. 2 GP-007-SL (21,000,000J* µg/kg) 7, Appendix A, GP-107-SL (24,000,000J* µ.g/kg) pp. 17, 19, 20; 13' p. 8; 34, p. 2 GP-007-SL (8,178.75J* µg/kg) 7, Appendix A, GP-107-SL (573.36J* µg/kg) pp. 17, 19, 20; 13' p. 8; 34, p. 2 GP-004-SL (11 µg/kg) 7' Appendix ·A, GP-007-SL (31,000C µg/kg) pp. 51, 52, 60 GP-107-SL (55,000C µg/kg) GP-007-SL (48,000C µg/kg) 7' Appendix A, GP-107-SL (80,000C µg/kg) pp. 51, 52 GP-004-SL (21 µg/kg) 7, Appendix A, GP-007-SL (72,000C µg/kg) pp. 51, 52, 60 GP-107-SL (130, oooc µg/kg) GP-004-SL (600 µg/kg) 7, Appendix A, p. 60 GP-004-SL (8.2J* ng/kg) 7, Appendix A, GP-005-SL (18J* ng/kg) pp. 2, 3' 10, GP-006-SL ( ll0J* ng/kg) 11, 12' 13, GP-007-SL (220J* ng/kg) 15; 13' pp. 8, GP-107-SL (140J* ng/kg) 9; 34, pp. 2' 3 15 • ;\l!!lJtil';,"':~fffl'lffl•~m'11Wliiif!!!Tu•>!Jle "' J{._~:"""''j~J1d · _ ·_-_·_'" ~--t ~-ii ___ : : it1s1 ~1~b'{!M :t azar. o.:µs ~ s~anc_ey ·C{4 -'· • • ".::&i , Tetrachlorodibenzodioxin (Total) 1,2,3,7,8- Pentachlorodibenzodioxin Pentachlorodibenzodioxin (Total) 1,2,3,4,7,8- Hexachlorodibenzodioxin 1,2,3,6,7,8- Hexachlorodibenzodioxin 1,2,3,7,8,9- Hexachlorodibenzodioxin Hexachlorodibenzodioxin (Total) 1,2,3,4,6,7,8- Heptachlorodibenzodioxin Heptachlorodibenzodioxin (Total) Octachlorodibenzodioxin (Total) • SD-Hazardous Substances Source No. : 1 ~•-~•--! IT . . enc.a_ '· · -:• · ,~ .,_ -'""~ ffl:~•rlfjM~J"!'"":fl _Ref_erenc_eA$i,':,;1,~,: GP-004-SL (26J* ng/kg) 7, Appendix A, GP-005-SL (42J* ng/kg) pp. 10, 11, GP-006-SL (420J* ng/kg) 12, 13, 15; GP-007-SL (430J* ng/kg) 13, p. 8; 34, GP-107-SL (810J* ng/kg) p. 3 GP-004-SL (1,500 ng/kg) 7, Appendix A, GP-005-SL (2,900 ng/kg) pp. 10, 11, GP-006-SL (18,000 ng/kg) 12, 13' 15 GP-007-SL (28,000 ng/kg) GP-107-SL (20,000 ng/kg) GP-004-SL (2,200J* ng/kg) 7, Appendix A, GP-005-SL (2,200J* ng/kg) pp. 10, 11, GP-006-SL (20,000J* ng/kg) 12, 13' 15; GP-007-SL (14,000J* ng/kg) 13, p. 8; 34, GP-107-SL (12,000J* ng/kg) pp. 3' 4 GP-004-SL (5,000 ng/kg) 7, Appendix A, GP-005-SL (4,100 ng/kg) pp. 10, 11, GP-006-SL (50,000 ng/kg) 12, 13, 15 GP-007-SL (67,000 ng/kg) GP-107-SL (52,000 ng/kg) GP-004-SL (4,300J* ng/kg) 7' Appendix A, GP-005-SL (4,SOOJ* ng/kg) pp. 10, 11, GP-006-SL (110,000J* ng/kg) 12, 13' 15; GP-007-SL (990,000 ng/kg) 13, p. 8; 34, GP-107-SL (120,000J* ng/kg) p . 4 . GP-004-SL (7,400 ng/kg) 7, Appendix A, GP-005-SL (11,000 ng/kg) pp. 10, 11, GP-006-SL (99,000 ng/kg) 12, 13' 15 GP-007-SL (140,000 ng/kg) GP-107-SL (110,000 ng/kg) GP-004-SL (16,000J* ng/kg) 7, Appendix A, GP-005-SL (18,000J* ng/kg) pp. 10, 11, GP-006-SL (300, OOOJ* ng/kg) 12, 13' 15; GP-007-SL (290,000J* ng/kg) 13' p. 8; 34, GP-107-SL (320,000J* ng /kg) pp. 4' 5 GP-004-SL (32,000J* ng/kg) 7, Appendix A, GP-005-SL (12,000J* ng/kg) pp. 2' 10, 11, GP-006-SL (830,000J* ng/kg) 12, 13' 15; GP-007-SL (840,000J* ng/kg) 13' p. 8; 34, GP-107-SL (10,000,000 ng/kg) p. 5 GP-004-SL (62,000J* ng/kg) 7' Appendix A, GP-005-SL (23,000J* ng/kg) pp. 10, 11, GP-006-SL (14,000,000 ng/kg) 12, 13' 15; GP-007-SL (15,000,000 ng/kg) 13' p. 8; 34, GP-107-SL (16,000,000 ng/kg) p. 5 GP-004-SL (37,000J* ng/kg) 7, Appendix A, GP-005-SL (36,000J* ng/kg) pp. 10, 11, GP-006-SL (26,000,000 ng/kg) 12, 13' 15; GP-007-SL (29,000,000 ng/kg) 13' p. 8; 34, GP-107-SL (39,000,000 na/ka) 00. 5' 6 16 ~J:':!'t -,;, .. :..•. • 2;3,7,8-Tetrachlorodibenzofuran Tetrachlorodiberizofuran (Total) 1,2,3,7,8- Pentachlorodibenzofuran 2,3,4,7,8- Pentachlorodibenzofuran Pentachlorodibenzofuran (Total) 1,2,3,4,7,8- Hexachlorodibenzofuran 1,2,3,7,8,9- Hexachlorodibenzofuran 2,3,4,6,7,8- Hexachlorodibenzofuran Hexachlorodibenzofuran (Total) 1,2,3,4,7,8,9- Heptachlorodibenzofuran GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL 17 • SD-Hazardous Substances Source No. : 1 (300 ng/kg) (660 ng/kg) I 800J* ng /kg) (l,300J* ng/kg) (l,600J* ng/kg) (260J* ng/kg) (650J* ng/kgl (3,200J* ng/kg) (6,200J* ng/kg) (9,500J* ng/kg) (480 ng/kg) (910 ng/kg) (18,000 ng/kg) (20,000 ng/kg) (23,000 ng/kg) (86 ng/kgl (4,100 ng/kg) (37,000 ng/kg) (40,000 ng/kg) (70,000 ng/kg) (3,300J* ng/kg) (8,000J* ng/kg) (46,000J* ng/kg) (50,000J* ng/kg) (75,000J* ng/kg) (3,600 ng/kg) 12,900 ng/kg) (100,000 ng/kg) (94,000 ng/kg) (95,000 ng/kg) (1,400 ng/kg) (1,900 ng/kg) (55,000 ng/kg) (56,000 ng/kg) (60,000 ng/kg) (3,700 ng/kg) (6,100 ng/kg) (86,000 ng/kg) (79,000 ng/kg) (79,000 ng/kg) (14,000J* ng/kg) (14,000J* ng/kg) (370,000J* ng/kg) (320,000J* ng/kg) (360,000J* ng/kg) (10,000 ng/kg) (4,000 ng/kg) (230,000 ng/kg) (200,000 ng/kg) (200,000 n /k I 7, Appendix A, pp. 2, 3, 10, 11, 12, 13, 15; 13, p. 8; 34, p. 6 7, Appendix A, pp. 10, 11, 12, 13, 15; 13, p. 8; 34, p. 6 7, Appendix A, pp. 10, 11, 12, 13, 15 7, Appendix A, pp. 10, 11, 12, 13, 15 7, Appendix A, pp. 10, 11, 12, 13, 15; 13, p. 8; 34, pp. 6, 7 7, Appendix A, pp. 10, 11, 12, 13, 15 7, Appendix A, pp. 10, 11, 12, 13, 15 7, Appendix A, pp. 10, 11, 12, 13, 15 7, Appendix A, pp. 10, 11, 12, 13, 15; 13, p. 8; 34, p .. 7 7, Appendix A, pp. 10, 11, 12, 13, 15 • ·so-Hazardous Substances Source No . : 1 Heptachlorodibenzofuran (Total) GP-004-SL (980J* ng/kg) GP-005-SL (380J* ng/kg) GP-006-SL (22,000J* ng/kg) GP-007-SL (600,000J* ng/kg) GP-107-SL (780,000J* ng/kg) 7, Appendix A, pp. 10, 11, 12, 13, 15; 13, p. 8; 34, pp. 7, 8 Octachlorodibenzofuran (Total) GP-004-SL (9,000J* ng/kg) GP-005-SL (12,000J* ng/kg) GP-006-SL (13,000,000 ng/kg) GP-007-SL (13,000,000 ng/kg) GP-107-SL (17,000,000 ng/kg) 7, Appendix A · pp. 10, 11, Notes: GP SL µg/kg mg/kg ng/kg J* PCB C -Georgia Pacific Corporation Hardwood Sawmill -Surface soil -Micrograms per kilogram -Milligrams per kilogram -Nanograrns per kilogram 12, 13, 15; 13, p. 8; 34, p. 8 -Estimated values were adjusted in accordance with ·Reference 13 (See Reference 34) -Polychlorinated biphenyls -Confirmed by gas chromatography/mass spectrometry (GCMS) Soil samples cited contain elevated levels of hazardous substances. Estimated· data concentrations (J*) have been adjusted in accordance with Reference 13. Actual analytical data sheets are presented in Reference 7, Appendix A. See Figure 3 on page 8 in this documentation record for sample locations. Contract-required detection limits {CRDLs) and contract-required quantitation limits (CRQLs) are provided in the table on page 19 which also ~ists background concentrations. Dioxin and furan analyses were performed using SW 846 Method 8290; therefore, the Practical Quantitation Limits (PQLs) used by EPA Region 4 Science and Ecosystem Support Division (SESD) were provided (Refs. 18; 42). SESD performs data validation on all data that are analyzed at CLP laboratories (Ref. 40). 18 • -Background conCentrations • SD-Hazardous Substances Source No. : 1 1 nAf4'J.q . ·: ··•"'-·'_'"-' . :ti,'.i.:/' •' ... ,d·_, ,~ ';J, ~£!•!!!%=1-~~P,ii'!i¾r9 ~~*i,P~-~~ ~S_SJ:npl_e,)::C:OJ:! .. -~z~--:us _ , _. ,1 ppn~_~ntr_a,:ioni•~; :1,(,!RQU/,G~I,i1l,.;o,;); ~~R~_f er_enc_e;_;~~IB- GP-003-SL Arsenic 3 .13J* mg/kg· 2 mg/kg 7, Appendix A, pp. 72, 75; 13, p. 9; 14, p. 8; 35, p. 2 Chromium 11. 48J* mg/kg 2 mg/kg 7, Appendix A, pp. 71, 75; 13, pp. 8, 18; 14, p. 8; 35, p. 2 Copper 5UJ mg/kg 5 mg/kg 7, Appendix A, p. 75; 14, p. 8 Lead 15 mg/kg 0.6 mg/kg 7, Appendix A, p. 75; 14, p. 8 Nickel 2.97J* mg/kg 8 mg/kg 7, Appendix A, pp. 71, 75; 13, pp. 8, 18; 14, p. 8; 3 5, p. 2 Zinc 43.5J* mg/kg 4 mg/kg 7, Appendix A, pp. 70, 75; 13, pp. 8, 18; 14, p. 8; 3 5, p. 2 .. Pentachlorophenol 24,000 µg/kg 830 µg/kg 7, Appendix A, p. 21; 14, p. 5 Pyrene 410UJ µg/kg 330 µg/kg 7, Appendix A, p. 21; 14, p. 5 Alpha-BHC 2.2U µg/kg 1.7 µg/kg 7, Appendix A, p. 53; 14, p. 7 Delta-BHC 2.2U µg/kg 1. 7 µg/kg 7, Appendix A, p. 53; 14, p. 7 Gamma-BHC (Lindane) 2.2U µg/kg 1. 7 µg/kg 7, Appendix A, p. 53; 14, p. 7 PCB-1254 42U µg/kg 33.0 µg/kg 7, Appendix (Aroclor 1254) A, p. 53; 14, p. 7 19 ' • • SD-Hazardous Substances Source No . : 1 -lltilill,IWJw'ffl¾lf/"ihl;t"W,j fcft!2i~,,,0~-&-~!ll~iD!Ei l[Conc.entr.at.ion CRQL"<=RDL,, · IReference. · , GP-003-SL 2,3,7,8-2.5U ng/kg 2.0 ng/kg .. 7, Appendix Tetrachlorodibenzodioxin A, p. 9·, 18 Tetrachlorodibenzodioxin 2.5UJ ng/kg 2.0 ng/kg .. 7, Appendix (Total I A, p . 9; 18 1,2,3,7,8-2.5U ng/kg 10 ng/kg . . 7, Appendix Pentachlorodibenzodioxin A, p . 9; 18 Pentachlorodibenzodioxin lOUJ ng/kg 10 ng/kg .. 7, Appendix (Total) A, p . 9; 18 1,2,3,4,7,8-2. 5U ng/kg 10 ng/kg .. 7, Appendix Hexachlorodibenzodioxin A, p. 9; 18 ,.1,2,3,6,7,8-lOU ng/kg 10 ng/kg .. 7, Appendix Hexachlorodibenzodioxin A, p. 9; 18 1,2,3,7,8,9-lOU ng/kg 10 ng/kg .. 7, Appendix Hexachlorodibenzodioxin A, p. 9; 18 Hexachlorodibenzodioxin 50UJ ng/kg 10 ng/kg .. 7, Appendix (Total) A, p. 9; 18 1,2,3,4,6,7,8-220U ng/kg 10· ng/kg .. 7, Appendix Heptachlorodibenzodioxin A, p . 9; 18 Heptachlorodibenzodioxin 540UJ ng/kg 10 ng/kg .. 7, Appendix (Total I A, p . 9; 18 Octachlorodibenzodioxin 4,900U ng/kg 20 ng/kg .. 7, Appendix (Total) A, p. 9; 18 2,3,7,8-2.5U ng/kg 2.0 ng/kg .. 7, Appendix Tetrachlorodibenzofuran A, p . 9; 18 Tetrachlorodibenzofuran 3.0UJ ng/kg 2.0 ng/kg .. 7, Appendix (Total I A, p. 9; 18 '1,2,3,7,B-2.5U ng/kg 10 ng/kg .. 7, Appendix Pentachlorodibenzofuran A, p . 9; 18 2,3,4,7,8-2.5U ng/kg 10 ng/kg . . 7, Appendix Pentachlorodibenzofuran A, p. 9; 18 Pentachlorodibenzofuran lOUJ ng/kg 10 ng/kg .. 7, Appendix (Total) A, p. 9; 18 1,2,3,4,7,8-2.5U ng/kg 10 ng/kg .. 7, Appendix Hexachlorodibenzofuran A, p . 9; 18 1,2,3, 7,8,9-2.5U ng/kg 10 ng/kg .. 7, Appendix Hexachlorodibenzofuran A, p. 9; 18 2, 3, 4, 6, 7, 8-2.5U ng/kg 10 ng/kg .. 7; Appendix Hexachlorodibenzofuran A, p. 9; 18 Hexachlorodibenzofuran 30UJ ng/kg 10 ng/kg .. 7, Appendix (Total I A, n. 9; 18 20 • • SD-Hazardous Substances Source No. : 1 1,2,3,4,7,8,9- Heptachlorodibenzofuran 2.SU ng/kg 10 ng/kg .. 7, A, Appendix p. 9; 18 GP-003-SL Heptachlorodibenzofuran SOUJ ng/kg 10 ng/kg .. 7, Appendix (Total I A, p. 9; 18 Octachlorodibenzofuran (Total) 30U ng/kg 20 ng/kg .. 7' A, Appendix p. 9; 18 Notes: CRQL CRDL GP SL mg/kg - µg/kg - ng/kg - J* u Contract-Required Quantitation Limit Contract-Required Detection Limit Georgia-Pacific Corporation Hardwood Sawmill Surface soil sample Milligrams per kilogr~m Micrograms per kilogram Nanograms per kilogram Estimated values were adjusted in accordance with-•Reference 13 (See Reference 35) Undetected. Value presented is the minimum quantitation limit. CRQLs were provided for the organic constituents, and CRDLs were provided for the inorganic constituents (Ref. 14}. Dioxin and furan analyses were performed using SW 846 Method 8290; therefore, the Practical Quantitation Limits (PQLs) used by EPA Region 4 Science and Ecosyscem Support Division (SESD) were provided (Refs. 18; 42). SESD performs data validation on all data that are analyzed at CLP laboratories (Ref. 40). 21 • • SD-Hazardous Constituent .Quantity Source No. : 1 2.4.2. Hazardous Waste Quantity 2.4.2.1.1. Hazardous ·constituent Quantity Insufficient information is available to score hazardous constituent quantity. Hazardous Constituent Quantity Value (S): Not scored 2.4.2.1.2. Hazardous Wastestream Quantity Insufficient information is available to score hazardous wastestream quantity. Hazardous Wastestrearn Quantity Value (W): Not scored 2.4.2.1.3. Volume Insufficient information is available to calculate volume. Volume Assigned Value: Not scored 2.4.2.1.4. Area During the ESI, NCDEHNR personnel estimated the area of contaminated soil around the dip vat to be approximately 150 feet by 200 feet. However, the area could not be confirmed; therefore, the hazardous waste quantity is considered to be greater than O (Ref. 7, p. 7). Area of source (ft2 ): > 0 Reference(s): 1, Section 2.4.2.1.4, Table 2-5 Area Assigned Value: > 0; 0 2.4.2.1.5. Source Hazardous Waste Quantity Value Source Hazardous Waste Quantity Value: > 0 (Ref. 1, Section 2.4.2.1.51 22 • • SD-Summary SITE SUMMARY OF SOURCE DESCRIPTIONS Note: NS Not scored Reference 1, Sections 2.4.2.1.5, 4.1.2.1.2.1.1 and 4-2 Other Potential Sources Several other potential source areas are present at the facility. Insufficient data is available to evaluate the following other potential sources: Former burner area (ReL 8, Figure 2-2) Former transformer area (Ref. 8, Figure 2-2) Former finished product storage area(s) (Ref. 8, Figure 2-2) 23 • • SWOF-Surface Water Overland Flow/Flood Migration· Pathway 4.1 OVERLAND/FLOOD MIGRATION COMPONENT 4.1.1.1 DEFINITION OF HAZARDOUS SUBSTANCE MIGRATION PATH FOR OVERLAND/FLOOD COMPONENT Surface water runoff from Georgia-Pacific Corporation Hardwood ·sawmill enters the Roanoke River via a drainage ditch that runs along the entire perimeter of the facility property (Refs. 7, p. 15; 15). Overland drainage that flows to the ditch enters the Roanoke River on the western edge, or farthest upstream probable point of entry (PPE #1) (Refs. 7, p. 15; 8, p. 2-4; 15). Overland drainage also enters the Roanoke River from the eastern property boundary via the perimeter drainage ditch (PPE #2) (Refs. 7, p. 15; 15). The distance between PPE #1 and PPE #2 is approximately 1,100 to 1,200 feet (Refs. 3; 8, Figures 1-1, 2-1). The intermittent drainage ditch is approximately 300 feet east of Source No. 1 (Ref. 8, Figure 2-2). Overland flow from Source No. 1 is directed toward the intermittent ditch and the Roanoke River (Refs. 3; 43). From entry into the intermittent drainage ditch, drainage flows north along the ditch approximately 200 feet north prior to entering the Roanoke River at PPE #2 (Ref. 43). Surface soil sample GP-002-SL, collected from the intermittent drainage ditch east of the dip vat area (Source No. 1) during the ESI, contained the following hazardous substances: arsenic (5.4 mg/kg), copper (13J mg/kg), lead (250 mg/kg), zinc (lOOJ mg/kg), 2,3,7,8- tetrachlorodibenzodioxin (19J ng/kg), 1,2,3,7,8-pentachlorodibenzodioxin (170 ng/kg), pentachlorodibenzodioxin (total) (650J ng/kg), 1,2,3,4,7,8- hexachlorodibenzodioxin (220 ng/kg), 1,2,3,6,7,8-hexachlorodibenzodioxin (830 ng/kg), 1,2,3,7,8,9-hexachlorodibenzodioxin (500 ng/kg), hexachlorodibenzodioxin (total) (4,600J ng/kg), 1,2,3,4,6,7,8- heptachlorodibenzodioxin (16,000 ng/kg), heptachlorodibenzodioxin (total) (32,000J ng/kg), octachlorodibenzodioxin (total) (92,000J ng/kg), 1,2,3,4,7,8-hexachlorodibenzofuran (59 ng/kg), 1,2,3,7,8,9- hexachlorodibenzofuran (36 ng/kg), 2,3,4,6,7,8-hexachlorodibenzofuran 1120 ng/kg), hexachlorodibenzofuran (total) 12,lOOJ ng/kg), 1,2,3,4,6,7,8- heptachlorodibenzofuran (1,400 ng/kg), 1,2,3,4,7,8,9- heptachlorodibenzofuran (81 ng/kg), heptachlorodibenzofuran (total) (4,000J ng/kg), and octachlorodibenzofuran (total) (1,500 ng/kg) (Ref. 7, Appendix A, pp. 8, 83; Also see Figure 3 on page 8 of this documentation record). PPE #2 is the farthest downstream PPE for Georgia-Pacific Corporation Hardwood Sawmill; therefore, the 15-mile surface water migration pathway target distance limit (TDL) was calculated from this point. From PPE #2, surface water flows northeast along the Roanoke River for approximately 2.75 miles, where the Eastmost River begins. Flow continues in the Eastrnost River for approximately 2.6 miles before converging with Albermarle Sound, and 2.5.miles in the Roanoke River before converging with Albermarle Sound. The 15-rnile surface water migration pathway TDL is completed in Albermarle Sound (Ref. 3; Also see Figure 4 on page 9 of this documentation record). 24 • 4.1.2.l LIKELIHOOD OF RELEASE 4.1.2.l.l Observed Release Chemical Analysis Control Samples WC-003-SW Roanoke River, upstream Surface of the Georgia-Pacific property, and downstream of the Weyerhaeuser Corporation. WC-003-SD Roanoke River, upstream O -6 Notes: WC SW ND SD of the Georgia-Pacific property, and downstream of the Weyerhaeuser Corporation (same location as WC-003-SW). Weyerhaeuser Corporation Surface water sample Not documented Sediment sample • SWOF-Observed Release 6/20/95 6/20/95 16, pp. 11, 43, 64, 106; 7, p. 16; 17, Logbook B, p. 4; 37 7, p. 16; 16, pp. 8, 42, 63, 82, 105; 17, Logbook B, p. 4; 37 North Carolina Division of Waste Management, Superfund Section personnel collected the preceding control samples during the Weyerhaeuser Corporation Site Inspection Prioritization (SIP) conducted at the same time as the Georgia-Pacific Hardwood Sawmill ESI, 'June 19-20, 1995 (Refs. 16; 17). Because the Weyerhaeuser Corporation produces wood pulp, finished paper, and paperboard, this sample was collected upstream of Georgia-Pacific and downstream of Weyerhaeuser Corporation in an attempt to represent control conditioris and segregate possible contamination from each facility (Ref. 39, p. 4). All surface water and sediment samples were collected from the Roanoke River. Surface water·samples were collected from the surface of the water (Ref. 37). Sample locations are depicted in Figure 4 on page 9 in this documentation record. Also see the sample location summary tables presented in Reference 7. 25 • • SWOF-Observed Release Control Concentration WC-003-SW Lead 3UJ µg/L 3 µg/L 14, p. 8; 16, p. 106 WC-003-SD Arsenic 3U mg/kg 14, p. 8; 16, p. 105 Copper 27 mg/kg 5 mg/kg 14, p. 8; 16; p. 105 Lead 20 mg/kg 0.6 mg/kg 14, p. 8; 16, p. 105 Zinc ll0 mg/kg 4 mg/kg 14, p. 8; 16, p. 105 Pentachlorophenol l,800U µg!kg 830 µg/kg 14, p. 5; 16, p. 8 Gamma-BHC (Lindane) 3.5U µg/kg 1. 7 µg/kg 14, p. 7; 16, p. 42 2,500J* ng/kg 5 ng /kg .. 13, p. 8; 16, pp. Octachlorodibenzodioxin (Total) 79, 80, 82; 18; Notes: 3 6, p. 2 2,3,7,8- Tetrachlorodibenzofuran 10 ng/kg 0.5 ng/kg .. 16, p. 82; 18 CRQL CRDL WC SW SD µg/L J* u mg/kg µg/kg ng/kg * ** Contract-Required Quantitation Limit Contract-Required Detection Limit Weyerhaeuser Corporation Surface water sample Sediment sample Micrograms per liter Estimated value adjusted in accordance with Reference 13 (See Reference 36) Undetected; value presented is the minimum quantitation limit Milligrams per kilogram Micrograms per kilogram Nanograrns per kilogram CRQLs provided for the organic constituents, and CRDLs provided for the inorganic constituents (Ref. 14). Dioxin and furan analyses were performed using SW 846 Method 8290; therefore, the Practical Quantitation Limits (PQLs) used by EPA Region 4 Science and Ecosystem Support Division (SESD) were provided (Refs. 18; 42). SESD performs data validation on all data that are analyzed at CLP laboratories (Ref. 40). 26 • Contaminated Samples GP-009-SW Approximately 100 feet upstream of the Georgia-Pacific loading dock on the Roanoke River. GP-009-SD Approximately 100 feet upstream of the Georgia-Pacific loading dock on the Roanoke River {same location as GP-009-SW) . GP-109-SW Duplicate of GP-009-SW. GP-109-SD Duplicate of GP~009-SD. GP-001-SW Roanoke River at the mouth of PPE #2, along the eastern property boundary. GP-001-SD Roanoke River at the mouth of PPE #2, along the eastern property boundary (same location as GP-001- S\'/). GP-101-SW Duplicate of GP-001-SW. GP-101-SD Duplicate of GP-001-SD. GP-010-SW Roanoke River approximately 500 feet downstream of PPE #2. GP-010-SD Roanoke River approximately 500 feet downstream of PPE #2 (same location as GP-010-SW). • SWOF-Observed Release Surface 0 -6 Surface 0 -6 Surface 0 -6 Surface 0 -6 Surface 0 -6 6/19/95 7, p. 16; 17 Logbook A, p. 2; 37 6/19/95 7, p. 16; 17 Logbook A, p. 2; 37 6/19/95 7, p. 16; 17 Logbook A, p. 2; 37 6/19/95 7, p. 16; 17 Logbook A,p.2;37 6/20/95 7, p. 16; 17 Logbook B, p. 5; 37 6/20/95 7, p. 16; 17 Logbook B, p. 5; 37 6/20/95 7, p. 16; 17 Logbook B,p.5;37 6/20/95 7, p. 16; 17 Logbook B,p.5;37 6/19/95 7, p. 16; 17 Logbook A, p. 5; 37 6/19/95 7, p. 16; 17 Logbook A, p. 5; 3 7 Notes: GP SW ND SD PPE Georgia-Pacific Corporation Hardwood Sawmill Surface water sample Not documented Sediment sample Probable point of entry North Carolina Division of Waste Management, Superfund Section personnel collected the preceding samples during the Georgia-Pacific Hardwood Sawmill ESI, June 19-20, 1995 (Refs. 7; 17). All surface water and sediment samples were collected from the Roanoke River. Surface water samples were collected from the surface of the water (Ref. 37). Sample locations are depicted in Figure 4 on page 9 in this documentation record. AlsO see the sample location summary tables presented in Reference 7. 27 • Contaminated Samples Concentrations GP-009-SW Lead GP-009-SD Arsenic Copper Lead Zinc Pentachlorophenol Gamma-BHC (Lindane) 2,3,7,8- Tetrachlorodibenzofuran GP-109-SW Lead GP-109-SD Arsenic Copper Lead Zinc Pentachlorophenol Octachlorodibenzodioxin (Total) 2,3,7,8- Tetrachlorodibenzofuran 7.63J* µg/L 22 mg/kg l00J* mg/kg 330 mg/kg 353.33J* mg/kg 9,500 µg/kg 5.3J* µg/kg 190J* ng/kg 3.82J* µg/L 19 mg/kg 130J* mg/kg 250 mg/kg 620J* mg/kg 9,200 µg/kg 18,000 ng/kg 200 ng/kg 28 • SWOF-Observed Release 3 µg/L 2 mg/kg 5 mg/kg 0.6 mg/kg 4 mg/kg 830 µg/kg 1.7 µg/kg 2.0 ng/kg .. 3 µg/L 2 mg/kg 7, Appendix A, pp. 71, 84; 13, pp. 8; 14, p. 8; 38, p. 2 7, Appendix A, p. 85; 14, p. 8 7, Appendix A, pp. 71, 85; 13, p. 8; 14, p. 8; 38, p. 2 7, Appendix A, p. 85; 14, p. 8 7, Appendix A, pp. 71, 85; 13, p. 8; 14, p-. 8; 38, p. 2 7, Appendix A, p. 31; 14, p. 5 7, Appendix A, pp. 50, 63; 13, p. 8; 14, p. 7; 38, p. 2 7, Appendix A, pp. 2, 4; 13, p. 8; 18; 38, p. 2 7, Appendix A, pp. 70, 88; 13, p. 8; 14, p. 8; 38, p. 2 7, Appendix A, p. 89; 14, p. 8 5 mg/kg 7, Appendix A, pp. 71, 89; 13, p. 8; 14, p. 8; 38, p. 2 0. 6 mg /kg 7, Appendix A, p. 89; i4, p. 8 4 mg/kg 7, Appendix A, pp. 71, 89; 13, p. 8; 14, p. 8; 38, p. 2 8 3 0 µg I kg 7 , Appendix A, · p . 35; 14, p. 5 20 ng/kg·· 7, Appendix A, p. 6 · 18 2.0 ng/kg.. 7, Appendix A, p. 6; 18 • GP-001-SW Lead 2.29J* µg/L • SWOF-Observed Release 3 µg/L 7, Appendix A, pp. 70, 78; 13, p. 7; 14, p. 8; 38, p. 2 GP-001-SD Pentac.hlorophenol 19,000 µg/kg 830 µg/kg 7, Appendix A, p. 25; 14, p. 5 2,3,7,8- Tetrachlorodibenzofuran 200 ng/kg 2. 0 ng/kg"" 7, Appendix A, p. 7; 18 GP-101-SW Lead 2.29J* µg/L GP-101-SD Arsenic 2.30J* mg/kg 3 µg/L 2 mg/kg 7, Appendix A, pp. 70, 80; 13, p. 8; 14, p. 8; 38, p. 2 7, Appendix A, pp. 72, 81; 13, p. 7; 14, p. 8; 38, p. 2 2,3,7,8- Tetrachlorodibenzofuran 120 ng/kg 2.0 ng/kg" 7, Appendix A, p. 14; 18 . GP-010-SD 2,3,7,8-53 ng/kg 2.0 ng/kg" Tetrachlorodibenzofuran 7, Appendix A, p. 5; 18 Notes: CRQL CRDL GP SW SD µg/L J u mg/kg - µg/kg - ng/kg - * Contract-Required Quantitation Limit Contract-Required Detection Limit Georgia-Pacific Corporation Hardwood Sawmill Surface water sample Sediment sample Micrograms per liter Estimated value adjusted in accordance with Reference 13 (See Reference 38) Undetected; value presented is the minimum quantitation limit Milligrams per kilogram Micrograms per kilogram Nanograms per kilogram CRQLs provided for the organic constituents, and CRDLs provided for the inorganic constituents (Ref. 14). CRQLs are not available; therefore, the Practical Quantitation Limits (PQLSs) used by EPA Region 4 Science and Ecosystem Support Division (SESD) were provided (Ref. 18). 29 • • SWOF-Observed Release Attribution: Analytical results of samples collected during several sampling events at the Georgia-Pacific Corpora'tion Hardwood Sawmill revealed the presenc_e of site-related hazardous constituents. Soil samples collected from the dip vat area during the Phase II, Screening .Site Inspection (SSI) contained detectable. concentrations of cobalt, copper, lead, alpha-BHC, delta-BHC, and gamma-BHC (lindane). Dioxin and furan analyses were not performed on these samples (Ref. 19, pp. 12, Table 2A). Soil samples collected from the dip vat area during the ESI that the NCDEHNR Division of Waste Management conducted in June 1995 contained the following contaminants at elevated concentrations: arsenic, chromium, copper, lead, nickel, zinc, pentachlorophenol, alpha-BHC, delta-BHC, gamma-BHC (lindane), PCB-1254 (Aroclor 12541, 2,3,7,8- tetrachloroddibenzodioxin, tetrachlorodibenzodioxin (total), 1,2,3,7,8- pentachlorodibenzodioxin, pentachlorodibenzodioxin (total), 1,2,3,4,7,8- hexachlorodibenzodioxin, 1,2,3,6,7,8-hexachlorodibenzodioxin, 1,2,3,7,8,9- hexachlorodibenzodiioxin, hexachlorodibenzodioxin (total), 1,2,3,4,6,7,8- heptachlorodibenzodioxin, heptachlorodibenzodioxin (total), octachlorodibenzodioxin (total), 2,3,7,8-tetrachlorodibenzofuran, tetrachlorodibenzofuran I total) , 1, 2, 3, 7, 8.-pentachlorodibenzofuran, 2,3,4,7,8-pentachlorodibenzofuran, pentachlorodibenzofuran (total), 1,2,3,4,7,8-hexachlorodibenzofuran, 1,2,3,7,8,9-hexachlorodibenzofuran, 2, 3, 4, 6, 7, 8-hexachlorodibenzofuran, hexachlorodibenzo·furan I total) , 1,2,3,4,7,8,9-heptachlorodibenzofuran, heptachlorodibenzofuran (total), and octachlorodibenzofuran (total) (Ref. 7, Appendix Al. Prior to 1950, Atlas Plywood Company owned the facility property; little is known about the operations during this time period (Ref. 5, p. 1). Around 1950, the property was purchased by Georgia-Pacific Corporatio~ and all existing buildings were demolished and a new production facility built (Ref. 5). Operations conducted during the Georgia-Pacific ownership included the production of hardwood lurnber,and railroad ties (Ref. 21). The existing facility burned in 1983, and the facility was permanently closed (Refs. 5, p. l; 6, p. 1). In 1985, the property was sold to Decatur Partnerships (Ref. 91. Outerbanks Contractors leased a portion of the property for the purpose of mixing asphalt (Ref. 20). This activity had ceased by June 1995 (Ref. 20) . Wood treatment operations at the facility consisted of passing wood along a conveyor belt and through a dip vat (Ref. 21, p. 1). The dip vat contained a mixture of wood treatment chemicals and pesticides (Ref. 21, p. 1). The chemicals used for this treatment were produced by the Koppers Company of St. Louis, Missouri (Ref. 21, p .. 1). The wood fungicide used is known by the trade name "Noxtane" and contains pentachlorophenate, and sodium metaborate (Ref. 21, p. 1). In addition to Noxtane,· lindane was also included in the treatment mixture (Ref. 21, p. 1). After wood passed through the dip vat, excess preservative on the finished wood spilled (the pentachlorophenate-lindane mixture) to the ground in the vicinity of the conveyor (Ref. 21, p. 1). This contaminated soil was allegedly periodically burned in the on-site boilers (Ref. 21, p. 1). Pentachlorophenol, a common wood preservative, often contains high concentrations of dioxins and furans (Ref. 22, p. 1}. Wood treatment facilities where a past common practice has been burning waste pentachlorophenol have produced large amounts of dioxins and furans (Ref. 22, p. 2). Treated wood and scrap wood that has been periodically burned at facilities has been a source of dioxins and furans (Ref. 22, p. 2). 30 • SWOF-Observed Release Dioxins are formed as by-products of incomplete burning of chlorinated compounds during incineration at low levels (Ref. 23, p. 1). Incineration of chlorinated compo4nas is a major source of dioxin congeners (Ref. 23, p. 2). High-temperature incineration is the most effective method of removing dioxins via burning (Ref. 22, p. 2; 23, p. 2). Dioxins can be produced when a source of chlorine is present along with chlorine-reactive chemicals (Ref. 23, p. 2). Several dioxin congeners can be by-products during the formulation of chlorinated pesticides, including pentachlorophenol (Ref. 23, p. 2). Polychlorinated biphenyls (PCBs) that are common in transformers produce large amounts of dioxins and·furans when burned (Ref. 22, p. 2). Dioxins and furans are also produced during the bleaching process of pulp and paper production (Ref. 23, p. 2). Paper bleaching is employed by the Weyerhaeuser Corporation, upstream of Georgia-Pacific (Ref. 39, p. 4). No creosote or pentachlorophenol has been used at the Weyerhaeuser Corporation (Ref. 39, p. 4). There are no other known potential sources of dioxins and furans known to be on this segment of the Roanoke River (Ref. 41). Buildings·depicted on the topographic map between the Weyerhaeuser Corporation, and Georgia-Pacific are downtown Plymouth, North Carolina and consist of a barber.shop, police station,· and various· other small businesses (Ref. 41). Hazardous Substances Released: Arsenic Copper Lead Zinc Pentachlorophenol Garnrna-BHC (Lindane) Octachlorodibenzodioxin (Total) 2,3,7,8-Tetrachlorodibenzofuran Observed Release Factor Value: 550 31 • SWOF-Contairunent 4.1.2.1.2 POTENTIAL TO RELEASE 4.1.2.1.2.1 Potential to Release~ Overland Flow Potential to release was not evaluated because an observed release to surface water was established by chemical analysis (see Section 4.1.2.1.1 of this HRS documentation record). 32 ~-, . . ~ j .·~ ~ • • SWOF-Drinking/Waste Characteristics 4.1.2.2 WASTE CHARACTERISTICS 4.1.2.2.1 Toxicity/Persistence Arsenic 1 10,000 10,000 1 1, Sect. 4.1.2.2.1; 2' p. B-2 Chromium 1 10,000 10,000 1 1, Sect. 4.1.2.2.1; 2' p. B-5 Copper 1 NA , 1, Sect. " 4.1.2.2.1; 2' p. B-6 Lead 1 10,000 10,000 1 1, Sect. 4.1.2.2.l; 2, p. B-13 Nickel. 1 10,000 10,000 1 l, Sect. 4.1.2.2.1; 2' p. B-14 Zinc 1 10 10 1 1, Sect. 4.1.2.2.1; 2' p. B-20 Pentachlorophenol 1 100 100 1 1, Sect. 4.1.2.2.l; 2' p. B-16 Pyrene 1 100 100 1 1, Sect. 4.1.2.2.l; 2, p. B-17 Alpha-BHC 1 10,000 10,000 1 1, Sect. 4.1.2.2.1; 2, p. B-12 Delta-BHC 1 1 1 1 1, Sect. 4.1.2.2.l; 2' p. B-12 Gamma-BHC (Lindane) 1 10,000 10,000 1 1, Sect. 4.1.2.2.1; 2' p. B-13 PCB-1254 (Arochlor 1254) 1 10,000 10,000 1 1, Sect. 4.1.2.2.l; 2, B-16 33 • • SWOF-Drinking/Waste Characteristics 2,3,7,8-1 10,000 10,000 1 1, Sect. Tetrachlorodibenzodioxin 4.1.2.2.l; 2' p. B-18 1,2,3,7,8-1 10,000 10,000 1 1, Sect. Pentachlorodibenzodioxin 4.1.2.2.1; 2' p. B-16 1,2,3,4,7,8-1 10,000 10,000 1 1, Sect. Hexachlorodibenzodioxin 4.1.2.2.1; 2' p. B-11 1,2,3,6,7,8-1 10,000 4,000 0.4 1, Sect. Hexachlorodibenzodioxin 4.1.2.2.l; 2, p. B-11 1,2,3,7,8,9-1 10,000 4,000 0.4 1, Sect. Hexachlorodibenzodioxin 4.1.2.2.l; 2, p. B-11 2,3,7,8-1 10,000 10,000 1 1, Sect. Tetrachlorodibenzofuran 4.1.2.2.1; 2' p. B-18 1,2,3,7,8-1 10,000 10,000 1 1, Sect. Pentachlorodibenzofuran 4.1.2.2.1; 2, p. B-16 2,3,4,7,8-1 10,000 10,000 1 1, Sect. Pentachlorodibenzofuran 4.1.2.2.l; 2, p. B-16 1, 2, 3, 4, 7, 8-1 10,000 10,000 1 1, Sect. Hexachlorodibenzofuran 4.1.2.2.1; 2, p. B-11 1,2,3,7,8,9-1 10,000 4,000 0.4 1, Sect. Hexachlorodibenzofuran 4.1.2.2.1; 2, p. B-11 2,3,4,6,7,8-1 10,000 4,000 0.4 1, Sect. Hexachlorodibenzofuran 4.1.2.2.1; 2, p. B-12 Notes: * Persistence value for rivers No value provided in the Superfund Chemical Data Matrix (Ref. 2) NA Not applicable PCB Polychlorinated biphenyls 34 • • SWOF-Drinking/Waste Characteristics Although tetrachlorodibenzodioxin (total), pentachlorodibenzodioxin (total), hexachlorodibenzodioxin (total), octachlorodibenzodioxin · (total), tetrachlorodibenzofuran (total), pentachlorodibenzofuran (total), hexachlorodibenzofuran (total), 1,2,3,4,7,8,9- heptachlorodibenzofuran, heptachlorodibenzofuran (total), and octachlorodibenzofuran (total) were detected in source samples, these were not included in the previous table because they are not listed in the Superfund Chemical Data Matrix (SCDM) (Ref. 2). ========================================================================= Toxicity/Persistence Factor Value: 10,000 35 • • SWOF/Drinking-Hazardous Waste Quantity 4.1.2.2.2 Hazardous Waste Quantity Sum of. values: 0 4.1.2.2.3 Waste Characteristics Factor Category Value Toxicity/persistence factor value X hazardous waste quantity factor value (100*) (10,000) 1 X 106 *A Hazardous waste quantity factor value of 100 was assigned as per Reference 1, Section 2.4.2.2 because Level II surface water target~ are documented. =----==================================================================== Hazardous Waste Quantity Factor Value: 100 Waste Characteristics Factor Category Value: 32 36 • • SWOF/Drinking-Targets 4.1.2.3 DRINKING WATER TARGETS No potable surface water intakes have been identified within the 15-mile surface water migration pathway target distance limit (Ref: 24). Nearest Intake Factor Value: 0 37 • • SWOF /Drinking~_Targets 4.1.2.3.3 Resources The Roanoke River and Albermarle Sound are both recreationally and commercially fished (Refs. 24; 25, pp .. 1, 2). Resources Factor Value: 5 38 4.1.3.2 4.1.3.2.1 Arsenic Chromium Copper Lead Nickel Zinc Pentachlorophenol Pyrene Alpha-8HC Delta-8HC Gamma-8HC (Lindane) PC8-1254 (Arochlor 1254) • • WASTE CHARACTERISTICS Toxicity/Persistence/Bioaccumulation 1 10,000 1 5 1 10,000 1 5 1 1 50,000 1 10,000 1 50 1 10,000 1 0.5 1 10 1 500 1 100 1 500 1 100 1 50 1 10,000 1 500 1 1 1 500 1 10,000 1 500 1 10,000 1 50,000 39 50,000 1, sect. 4.1.3.2.l; 2' p. 8-2 50,000 1, Sect. 4.1.3.2.l; 2' p. 8-5 NA 1, Sect. 4.1.3.2.l; 2' p. 8-6 5 X 105 1, Sect. 4.1.3.2.1; 2' p. 8-13 5,000 1, Sect. 4.1.3.2.l; 2' p. 8-14 5,000 1, Sect. 4.1.3.2.1; 2' p. 8-20 50,000 1, Sect. 4.1.3.2.l; 2, p. 8-16 5,000 1, Sect. 4.1.3.2.1; 2' p. 8-17 5 X 106 1, Sect. 4.1.3.2.1; 2' p. 8-12 500 1, Sect. 4.1.3.2.1; 2, p. 8-12 5 X 106 1, Sect. 4.1.3.2.l; 2, p. 8-13 5 X 108 1, Sect. 4.1.3.2.1; 2' p. 8-16 • • SWOF/Food Chain-Toxicity/Persistence/Bioaccumulation 2,3,7,8-1 10,000 1 5,000 5 X 10' 1, Sect. Tetrachlorodibenz 4.1.3.2.l; odioxin 2 •. p. B-18 1,2,3,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Pentachlorodibenz 4.1.3.2.1; odioxin 2, p. B-16 1,2,3,4,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Hexachlorodibenzo 4.1.3.2.l; dioxin 2, p. B-11 1,2,3,6,7,8-1 10,000 0.4 5,000 2 X 10' 1, Sect. Hexachlorodibenzo 4.1.3.2.1; dioxin 2' p. B-11 1,2,3,7,8,9-1 10,000 0.4 0. _5 2,000 1, Sect. Hexachlorodibenzo 4.1.3.2.1; dioxin 2, p. B-11 2,3,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Tetrachlorodibenz 4.1.3.2.1; ofuran 2, p. B-18 1,2,3,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Pentachlorodibenz 4.1.3.2.l; ofuran 2, p. B-16 2,3,4,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Pentachlorodibenz 4.1.3.2.l; ofuran 2, p. B-16 1,2,3,4,7,8-1 10,000 1 50,000 5 X 108 1, Sect. Hexachlorodibenzo 4.1.3.2.l; furan 2, p. B-11 1,2,3,7,8,9-1 10,000 0.4 0.5 2,000 1, Sect. Hexachlorodibenzo 4.1.3.2.1; furan 2' p. B-11 2,3,4,6,7,8-1 10,000 0.4 0.5 2,000 1, Sect. Hexachlorodibenzo 4.1.3.2.1; furan 2' p. B-12 Notes: * Persistence value for rivers ** •sioaccumulation factor value for fresh water No value provided in Superfund Chemical Data Matrix (Ref. 2 I NA Not applicable PCB Polychlorinated biphenyls 40 • • SWOF/Food Chain-Toxicity/Persistence/Bioaccumulation Although tetrachlorodibenzodioxin (total), pentachlorodibenzodioxin (total) , hexachlorodibenzodioxin ( total I , octachlorodibenzodioxin (total)., tetrachlorodibenzofuran (total), pentachlorodibenzofuran (total), hexachlorodibenzofuran (total), 1,2,3,4,7,8,9-heptachlorodibenzofuran, heptachlorodibenzofuran (total), and octachlorodibenzofuran (total) were detected in source samples, they were not included in the previous table because they are not listed in the Sup€rfund Chemical Data Matrix (Ref. 2 I . Toxicity/Persistence/Bioaccumulation Factor Value: 5 X 10' 41 • • SWOF/Food Chain-Hazardous Waste Quantity 4.1.3.2.2 Hazardous Waste Quantity Sum of values: > 0 4.1.3.2.3 Waste Characteristics Factor Category Value Toxicity/persistence factor value (10,000) X hazardous waste quantity factor value (100*): 1 X 106 *A Hazardous waste quantity factor value of 100 was assigned as per Reference 1, Section 2.4.2.2. Toxicity/persistence (10,000) x hazardous waste quantity (100) X bioaccumulation potential factor value (50,000): 5 X 1010 (Ref. 1, Section 2.4.3.1) --------------------====================================================== Hazardous Waste Quantity Assigned Value: 100 Waste Characteristics Factor Category Value: 320 42 • • SWOF/Food Chain-Targets 4.1.3.3 HUMAN FOOD CHAIN THREAT-TARGETS The entire 15-rnile target distance limit for Georgia-Pacific Corporation Hardwood Sawmill is fished (Ref. 24). This includes the Roanoke River from Plymouth, North Carolina to Albermarle Sound (Refs. 3; 24; 25, pp. 1, 2) . Actual Human Food Chain Contamination GP-009-SD Approximately 100 feet downstream of PPE #1 on the Roanoke River GP-109-SD Approximately 100 feet downstream of PPE #1 on the Roanoke River {Duplicate of GP-009-SD) GP-001-SD Roanoke River at PPE #2, approximately 800 feet downstream of PPE #1 GP-101-SD Roanoke River at PPE #2, approximately 800 feet downstream of PPE #1 (Duplicate of GP-001-SD) GP-010-SD Roanoke River approximately 500 feet downstream of PPE #2, and 1,300 feet downstream of PPE #1. Arsenic Copper Lead Zinc Pentachlorophenol Gamma-BHC (Lindane) 2,3,7,8- Tetrachlorodibenzofuran Arsenic Copper Lead Zinc Pentachlorophenol 2,3,7,8- Tetrachlorodibenzofuran Pentachlorophenol 2,3,7,8- Tetrachlorodibenzofuran 2,3,7,8- TetraChlorodibenzofuran Arsenic 2,3,7,8- Tetrachlorodibenzofuran 50,000 50,000 50 500 500 500 50,000 50,000 50,000 50 500 500 50,000 500 50,000 50,000 50,000 50,000 Sample locations are depicted on Figure 4 on page 9 in this documentation rec6rd. Closed Fisheries No known closed fisheries are located within the 15-mile surface water migration pathway target distance limit; however, a fish consumption advisory is in effect for the entire 15-mile surface water pathway (Ref. 27, p. 16). This advisory includes all fish except herring and shad (Ref. 27, p. 16). No consumption of fish is recommended for pregnant or nursing women, and children. For the general population, no more than two meals containing fish are recommended per month (Refs. 27, p. 16; 28) . 43 • • SWOF/Food Chain-Targets Level I ConcentratiOns No documented Level I samples have been collected from a fishery. No samples have been collected from sessile benthic organisms located within the 15-rnile surface water migration pathway target distance limit. Most Distant Level II Sample Sample ID: GP-010-SD Distance from the probable point of entry: 1,300 feet downstream of PPE #1 Reference: 3; 7, Figure 2; also see Figure 4 on page 7 ·in this documentation record. Level II Fisheries 44 ·, .1. 3. 3 .·1 Food Chain Individual Sample ID: GP-009-SD; GP-109-SD • SWOF/Food Chain-Food Chain I.ndividual Hazardous Substance(S): Arsenic; Coppei; Zinc; Pentachlorophenol; Gamrna- BHC (Lindane); 2,3,7,8-Tetrachlorodibenzofuran Bioaccumulation Potential: 50,000; 50,000; 500; 500; 500; 50,000 Sample ID: GP-001-SD; GP-101-SD Hazardous Substance(s): Arsenic; Copper; Zinc; Pentachlorophenol; 2,3,7,8-Tetrachlorobenzofuran Bioaccumulation Potential: 50,000; 50,000; 500; 500; 50,000 Sample ID: GP-010-SD Hazardous Substance(s): 2,3,7,8-Tetrachlorobenzofuran Bioaccumulation Potential: 50,000 Food Chain Individual Factor Value: 45 45 • • SWOF/Food Chain-Level I Concentrations 4.1.3.3.2 Population 4.1.3.3.2.1 Level I Concentrations No Level I concentrations have been documented within the 15-mile surface water migration pathway target distance limit. 46 • • SWOF/Food Chain-Level II Concentrations 4.1.3.3.2.2 Level II Concentrations Roanoke River > 0 0.03 1, Section 4.1.3.3.2.2, Table 4- 18; 24 Specific annual production information is not available for this section of the Roanoke River, but because this portion of the river is fished, the lowest non-zero value for population was used (Refs. 1, Section 4.1.3.3.2.3; 24). ------------====--======================================================= Level II Concentrations Factor Value: 0.03 47 : .. ,:: • • SWOF/Food Chain-Potential Human Food Chain Contamination 4.1.3.3.2.3 Potential Human Food Chain Contamination Roanoke > 0 Large Greater 0.03 0.0001 0.000003 1, Tables River Alber- marle Sound River than 4-13, 4- 10,000 18; 3; 29, to pp. 64, 100,000 65; 30, p. cfs 100 > 0 Sound N/A 0.03 0.0001 0.000003 1, Tables 4-13, 4- 18; pp. 65; 100 The average mean flow rate for the Roanoke River for 1997 was approximately 10,750 cubic feet per second {cfs) (Ref. 29, pp. 64, 65). This flow, however, was measured approximately 128 miles upstream of the facility {Ref. 29, pp. 64, 65). The average outflow of the Roanoke River into Albermarle Sound is approximately 8,900 cfs {Ref. 30, p. ,100). Therefore, for purposes of this documentation record, ·the flow for the Roanoke River at the facility was conservatively estimated to be greater than 10,000 cfs. The entire 15-mile target distance limit for Georgia- Pacific Corporation Hardwood Sawmill is fished {Ref. 24). This includes the Roanoke River from Plymouth, North Carolina, to Albermarle Sound {Refs. 3; 24; 25, pp. 2, 12). The annual production of fish in pounds from the 15-mile surface water migration pathway was not available. Therefore, for scoring purposes, the annual production was assumed to be greater than zero. 3; 64, 30, Sum of P, x o,: 0.000006 (Sum of P, x o,) /10: O. 0000006 {Ref. 1, Section 4.1.3.3.2.3) ========================================================================= Potential Human Food Chain Contamination Factor Value: 0.0000006 48 29, p. • • SWOF/Enviro!1ffient-Toxicity/Persistence/Bioaccumulation 4.1.4.2 WASTE CHARACTERISTICS 4.1.4.2.1 Ecosystem Toxicity/Persistence/Bioaccumulation Arsenic 1 10 1 10 1, Sect. 4.1.4.2.l; 2' p. B-2 Chromium 1 100 1 100 1, Sect. 4.1.3.2.1; 2' p. B-5 Copper 1 100 1 100 1, Sect. 4.1.4.2.l; 2' p. B-6 Lead 1 1,000 1 1,000 1, Sect. 4.1.4.2.1; 2' p. B-13 Nickel 1 10 1 10 1,. Sect. 4.1.4.2.1; 2' p. B-14 Zinc 1 10 1 10 1, Sect. 4.1.4.2.l; 2' p. B-20 Pentachlorophenol 1 100 1 100 1, Sect. 4.1.4.2.l; 2' p. B-16 Pyrene 1 10,000 1 10,000 1, Sect. 4.1.4.2.l; 2, p. B-17 Alpha-BHC 1 100 1 100 1, Sect. 4.1.4.2.1; 2' p. B-12 Delta-BHC 1 1 NA 1, Sect. 4.1.4.2.l; 2' p. B-12 Gamma-BHC (Lindane) 1 10,000 1 10,000 1, Sect. 4.1.4.2.1; 2, p. B-13 PCB-1254 (Arochlor 1254) 1 10,000 1 10,000 1, Sect. 4.1.4.2.1; 2' B-16 49 2,3,7,8- Tetrachlorodibenzodioxin {TCDD) 1,2,3,7,8- Pentachlorodibenzodioxin 1,2,3,4,7,8- Hexachlorodibenzodioxin 1,2,3,6,7,8- Hexachlorodibenzodioxin 1,2,3,7,8,9- Hexachlorodibenzodioxin 2,3,7,8- Tetrachlorodibenzofuran 1,2,3,7,8- Pentachlorodibenzofuran 2,3,4,7,8- Pentachlorodibenzofuran 1,2,3,4,7,8- Hexachlorodibenzofuran 1,2,3,7,8,9- Hexachlorodibenzofuran 2,3,4,6,7,8- Hexachlorodibenzofuran Notes: * ** NA PCB • SWOF/Environrnent-Toxicity/Persistence/Bioaccurnulation 1 10,000 1 10,000 1, Sect. 4.1.4.2.1; 2' p. B-18 1 10,000 1 10,000 1, sect. 4.1.4.2.1; 2' p. B-16 1 1 NA 1, Sect. 4.1.4.2.1; 2' p. B-11 1 10,000 0.4 4,000 1, Sect. 4.1.4.2.l; 2, p. B-11 1 0.4 NA 1, sect. 4.1.4.2.1; 2' p. B-11 1 1 NA 1, Sect. 4.1.4.2.1; 2' p. B-18 1 1 NA 1, Sect. 4.1.4.2.l; 2, p. B-16 1 1 NA 1, Sect. 4.1.4.2.1; 2' p. B-16 1 1 NA 1, Sect. 4.1.4.2.1; 2' p. B-11 1 0.4 NA 1, Sect. 4.1.4.2.l; 2' p. B-11 1 0.4 NA 1, Sect. 4.1.4.2.1; 2' p. B-12 Ecosystem toxicity value for fresh water Persistence value for rivers No value provided in the Superfund Chemical Data Matrix {Reference 2) Not applicable Polychlorinated biphenyls 50 • • SWOF/Environment-Toxicity/Persistence/Bioaccumulation Although tetrachlorodiben~odioxin (total), pentachlorodibenzodioxin (total), hexachlorodibenzodioxin (total), octachlorodibenzodioxin (total), tetrachlorodibenzofuran (total), pentachlorodibenzofuran (total), hexachlorodibenzofuran (total), 1,2,3,4,7,8,9-heptachlorodibenzofuran, heptachlorodibenzofuran (total), and octachlorodibenzofuran (total) were detected in source samples, they were not included in the previous table because they are not listed in the Superfund Chemical Data Matrix (Ref. 2). Ecosystem Toxicity/Persistence Factor Value: 10,000 51 • • SWOF/Envirorunent-Toxicity/Persistence/Bioaccumulation Arsenic 10 500 5,000 1, Sect. 4.1.4.2.1; 2, p. B-2 Chromium 100 5.0 500 1, Sect. 4.1.4.2.1; 2' p. B-5 Copper 100 50,000 5 X 106 1, Sect. 4.1.4.2.1; 2' p. B-6 Lead 1,000 5,000 5 X 106 1, Sect. 4.1.4.2.l; 2' p. B-13 Nickel 10 500 5,000 . 1, Sect. 4.1.4.2.l; 2' p. B-14 Zinc 10 500 5,000 1, Sect. 4.1.4.2.l; 2, p. B-20 Pentachlorophenol 100 5,000 5 X 105 1, Sect. 4.1.4'.2.1; 2' p. B-16 Pyrene 10,000 50 5 X 105 1, Sect. 4.1.4.2.1; 2' p. B-17 Alpha-BHC 100 500 50,000 l,_Sect. 4.1.4.2.l; 2' p. B-12 Delta-BHC NA 500 NA 1, Sect. 4.1.4.2.l; 2' p. B-12 Gamrna-BHC (Lindane) 10,000 500 5 X 106 1, Sect. 4.1.4.2.l; 2, p. B-13 PCB-1254 (Arochlor 1254 I 10,000 50,000 5 X 108 1, Sect. 4.1.4.2.l; 2' o. B-16 52 • • SWOF/Environrnent-Toxicity/Persistence/Bioaccumulation :::}:;:;ii:, t·Haza :,,.,,~S'A,'JC~'sl~::,i, M,, 2,3,7,8-10,000 5,000 5 X 107 1, Sect. Tetrachlorodibenzodioxin 4.1.4.2.1; (TCDD) 2' p. B-18 1,2,3,7,8-10,000 50,000 5 X 108 1, Sect. Pentachlorodibenzodioxin 4.1.4.2.l; 2, p. B-16 1,2,3,4,7,8-NA 50,000 NA 1, Sect. Hexachlorodibenzodioxin 4.1.4.2.l; '. 2' p. B-11 1,2,3,6,7,8-4,000 5,000 2 X 107 1, Sect. Hexachlorodibenzodioxin 4.1.4.2.1; 2, p. B-11 1,2,3,7,8,9-NA 0.5 NA 1, Sect. Hexachlorodibenzodioxin 4.1.4.2.1; 2' p. B-11 2,3,7,8-NA 50,000 NA 1, Sect. Tetrachlorodibenzofuran 4.1.4.2.l; 2' p. B-18 1,2,3,7,8-NA 50,000 NA 1, Sect. Pentachlorodibenzofuran 4.1.4.2.l; 2, p. B-16 2,3,4,7,8-NA 50,000 NA 1, Sect. Pentachlorodibenzofuran 4.1.4:2.1; 2' p. B-16 1,2,3,4,7,8-NA 50,000 NA 1, Sect. Hexachlorodibenzofuran 4.1.4.2.1; 2' p. B-11 1,2,3,7,8,9-NA 0.5 NA 1, sect. Hexachlorodibenzofuran 4.1.4.2.l; 2, p. B-11 2,3,4,6,7,8-NA 0.5 NA 1, Sect. Hexachlorodibenzofuran 4.1.4.2.1; 2, p .. B-12 Note: * Bioaccumulation factor value for fresh water NA Not applicable PCB Polychlorinated biphenyls 53 • SWOF/Environment-Toxicity/Persistence/Bioaccurnulation Although tetrachlorodibenzodioxin (total), pentachlorodibenzodioxin (total), hexachlorodibenzodioxin (total), octachlorodibenzodioxin (total), tetrachlorodibenzofuran (total), pentachlorodibenzofuran (total), · hexachlorodibenzofuran (total), 1,2,3,4,7,8,9-heptachlorodibenzofuran, heptachlorodibenzofuran (total), and octachlorodibenzofuran (total) were detected in source samples, they were not included in the previous table because they are not listed in the Superfund Chemical Data Matrix (Ref. 2). --------------===----=====================================--==========---- Ecosystem Toxicity/Persistence/Bioaccumulation Factor Value: 5 X 108 54 • SWOF/Environment-Hazardous Waste Quantity 4.1.4.2.2. Sum of values: > 0 4 .1. 4. 2. 3. Waste Characteristics Factor Category Value· Hazardous waste quantity factor value: *A Hazardous waste quantity factor value of 100 was assigned as per Reference 1, Section 2.4.2.2. Ecosystem toxicity/persistence factor value: Environmental bioaccumulation factor value: 100* 10,000 50,000 Ecosystem toxicity/persistence factor value (10,000) X hazardous waste quantity factor value (100): 1 X 106 Ecosystem toxicity/persistence (10,000) X hazardous waste quantity (100) X bioa·ccurnulation potential factor value (50,000): 5 X 10'° (Ref. 1, Section 2.4.3.1) Hazardous Waste Quantity Factor Value: Waste Characteristics Factor Category Value: 55 100 320 • • SWOF(Envirorun~nt-Targets 4.1.4.3 ENVIRONMENTAL THREAT -TARGETS Level I Concentrations No Level I concentrations have been documented; therefore, Level I concentrations were not evaluated. Most Distant Level II Sample Sample ID: GP-010-SD Distance from the probable point of entry: 1,300 feet from PPE #1 Reference: 3; 7, Figure 2; Also see Figure 4 on page 9 in this documentation record. 56 • • SWOF/Environment-Level I Concentrations 4.1.4.3.1 Sensitive ·Environments 4.1.4.3.1.1 Level! Concentrations No Level I concentrations have been documented; therefore, Level I concentrations were not evaluated. ===--===--====-========================================================== Level I Concentrations Factor Value: 0 57 • • SWOF/Environrnent-Level II,Concentrations 4.1.4.3.1.2. Level II Concentrations Sensitive Environments Actual contamination of a sensitive environment listed in Reference 1, Table 4-23 has not been documented. sum of Non-wetland Sensitive Environments Value: 0 Wetlands Sediment sample GP-010-SD, collected approximately 1,300 feet downstream of PPE #1, is the most distant sample collected adjacent to the wetland area contiguous with the Roanoke River and downstream of the Georgia-Pacific Hardwood sawmill (Refs. 7, Figure 2; 311. Approximately 1,800 feet of wetlands frontage were determined to be affected by Level II concentrations (Refs. 1, Table 4-24; 3; 7, Figure 2; 31). Based on the Wetlands Inventory Maps of Plymouth East and Westover, North Carolina, the wetland areas contiguous with the Roanoke River where sediment sample GP-010-SD was collected are classified as palustrine forested broad-leaved deciduous (PFOlA) and palustrine forested deciduous semipermanently flooded (PFO6F) (Ref. 31). Also see Figure 4 on page 9 of this documentation record. Total Wetland Frontage: 1,800 feet Wetland Value: 25 Sum of Sensitive Environments Value+ Wetland Value: 25 Level II Concentrations Factor Value: 25 58 • • 4.1.4.3.1.3 SWOF-Environment-Potential Contamination Potential Contamination Sensitive Environments Sound Albermarle Sound is a habitat for the federally designated endangered shortnose sturgeon Acipenser brevirostrom Sum of Environment Value: 75 Wetlands Roanoke River 10. 25 miles Eastmost River 5.2 miles Albermarle Sound 12.2 miles Total Wetland Frontage: 27.65 Miles Wetland Value: 750 r: '~-.,{ .. _ ··:i· ·\,,.,:fz:S1· :-:~µi.faC,~~itfc?-tJr<t:' <>: B<;>dY, •. ,;. Roanoke River Eastmost River Albermarle Sound None Identified None Identified 75 Sum of D,(w, + Sc): 0.0825 (Sum of D, [W, + SJ /10: 0. 00825 250 150 3 50 250 150 350 75 1, Table 4- 23; 32; 33 1, Tables 4-13, 4-24; 31 1, Tables 4-13, 4-24; 31 0.0001 1, Tables 4-13, 4-24; 31 0.0250 0.0001 0.0150 0.0001 0.0425 Potential Conta~ination Factor Value: 0.00825 59