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Home My WebLink AboutNCD000813592_19970113_GA-Pacific Corp Hdwd Saw_SERB PA SI_Expanded Site Inspection - Volume I-OCRI I I I I I I I I I I I I I I I I I I State of North Carolina Department of Environment, Health and Natural Resources Division of Waste Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary William L. Meyer, Director Ms. Cynthia Gurley NC CERCLA Project Officer US EPA Region IV Waste Division 100 Alabama Street Atlanta, GA 30303 ATA DEHNR January 13, 1997 Subject: Expanded Site Inspection Georgia-Pacific Corp. Hardwood Sawmill (NCD 000 813 592) Plymouth, Washington County, NC Dear Ms. Gurley: This report contains the findings of the Expanded Site Inspection (ESI) conducted at the former Georgia-Pacific Corp. Hardwood Sawmill site (NCD 000 813 592), located on Plywood Drive, Plymouth, Washington County, North Carolina. The Georgia-Pacific Corporation Hardwood Sawmill site is an inactive, 24-acre site located on Plywood Drive within the Plymouth city limits of Washington County. The Georgia-Pacific Corporation purchased the property in 1950 from the Atlas Plywood Company. Operational history and waste management practices of Atlas Plywood are unknown. · During the years of operation by Georgia-Pacific Corporation (1950-1983), the facility was engaged in sawing, planing, and treating. of rough hardwood lumber and timber from logs. Following a catastrophic fire in 1983, the facility was permanently closed. Georgia-Pacific sold the site on January 2, 1985, deeding the property to Decatur Partnerships, the current owners of the site. The site was leased to Outerbanks Contractors who used a portion of the property as an asphalt mixing plant The entire site is currently unoccupied and inactive. Process wastes associated with the plant consisted primarily of spent oil containing metals (D000-ignitable/0007-chromium, D008-lead), spent halogenated degreasing solvents (FOO 1 ), spent non-halogenated degreasing solvents (F003/F005), and bottom sediment sludge from the treatment of wastewater from the wood preserving process (KOOi). The fungicide/insecticide treatment solution used at the facility contained pentachloropheneate, sodium metaborate, lindane, and other chlorophenol compounds. P.O. Box 27687, Raleigh, North Carolina 27611-7687 Voice 919-733-4996 FAX 919-715-3605 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper I I I I I I I I I I I I I I I I I I I ' Georgia-Pacific Corp. Hardwoo:d Sawmill January 13, 1997 Page2 The estimated annual quantity of waste generated at the Georgia-Pacific facility included 20,000 pounds ofD000/ D007/ D008 waste, 375 pounds of FOO 1/ F003/ FOOS wastes, and 16,300 pounds of KOO 1 waste. During operations of the facility, wastes were either burned in the on-site boiler or disposed of at the county landfill. Application of the wood treatment solution was done as the rough lumber was passed through a dip vat located along a conveyor system. Soils in the vicinity of the dip vat were reportedly contaminated with wood preservative/insecticide compounds as a result of leakage and spillage of treatment solution from the vat. The company's practice of allowing freshly treated wood to drip excess treatment solution directly onto the ground also contributed to soil impact. The facility also included a machine shop and a transformer station. i Prior investigations at ,the site include the December 6, 1985 Preliminary Assessment conducted by the North Carolina Division ofHealth Services, the October 11, 1989 Phase I Screening Site Inspection (SSI) completed by NUS Corp., the September 1991 Greenhome & O'Mara Inc. Phase II Screening Site Inspection, and the April 15, 1994 Dynamac Corp. Site Inspection Prioritization (SIP). Results of the Phase II SSI sampling event indicated that a release of hazardous chemicals associated with the wood treatment process had occurred at the site and that surficial soils and the surficial aquifer had been impacted. These chemicals included various pesticides, metals, and PCB's. Sampling for the Georgia-Pacific Corporation Hardwood Sawmill Expanded Site Inspection conducted by the North Carolina Superfund Section on June 19-20, 1995 focused on sediment and surface water samples collected from the Roanoke River and on surficial soil samples collected from the vicinity of the dip vat. No groundwater samples were collected during the ESI because there arc no monitoring wells on-site and the nearest drinking water well is approximately 1.25-miles south of the site. All samples were analyzed under the U.S. Environmental Protection Agency (EPA) Contract Laboratory Program (CLP). Because the nearest identified residential groundwater well is located approximately 1.3-miles east of the site, no groundwater samples were collected during the ESI. Surface soil samples collected from the dip vat area exhibited elevated levels of various dioxin/furan isomers, metals, pesticides/PCB's, purgeable organic and extractable organic compounds. Some of these compounds are present at levels exceeding health based benchmarks for soil exposure. Sediment samples collected from the Roanoke River indicate that an observed release of aluminum, arsenic, iron, lead, pentachlorophenol, (3 and/or 4) methyl phenol, benzo(b/k) fluoranthene, 2,3, 7,8- TCDD, 1,2,3,7,8-PCDD, 1,2,3,4,7,8-HCDD, OCDD, and 2,3,7,8-TCDF has occurred. I I I I I I I I I I I I I I I I I Georgia-Pacific Corp. Hardwood Sawmill January 13, 1997 Page 3 This segment of the Roanoke River is considered a fishery and is classified as a wetland. However, a fish consumption advisory is currently in place along this segment of the river due to elevated dioxin levels in fish tissue. Based on these results, it appears that the former Georgia-Pacific site poses a possible threat to human health and the environment and is therefore recommended for further remedial action under CERCLNSARA. I If you have any questions, please feel free to contact me at (919) 733-2801, ext. 279. Sincerely, t Dc-ytZ-~,_/J G. Doug Rumford Hydrogeologist NC Superfund Section ,· I· I a: I i I I I I EXPANDED SITE INSPECTION Georgia -Pacific Hardwood Sawmill NCD 000 813 592 Plymouth, Washington County, NC Reference No. 02563 January 1997 Superfund Section Division of Waste Management North Carolina Department of Environment, Health and Natural Resources Hydrogeologist +--Ry1~ie ~~[,L....'.y: =====J t>~sa Site Evaluation & Removal Branch Head I I I I I I I I I I I I I I I I m g D TABLE OF CONTENTS EXECUTIVE SUMMARY 1.0 2.0 3.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTIC .................. : .......................... 1 2.1 Location ................................................ 1 2.2 Site Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.3 Operational History and Waste Characteristics ................... 5 WASTE/ SOURCE SAMPLING ................................... 7 3 .1 Sample Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 .2 Analytical Results ......................................... 9 3 .3 Conclusions ............................................. 9 4.0 GROUNDWATER PATHWAY ..................................... 9 4.1 4.2 4.3 4.4 4.5 Hydrogeologic Setting ..................................... 9 Groundwater Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Sample Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Analytical Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Conclusions ... · . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.0 SURFACE WATER PATHWAY ................................... 15 5 .1 Hydrologic Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.2 Surface Water Targets .......... : ......................... 16 5.3 Sample Locations ....................................... 16 5 .4 Analytical Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5. 5 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.0 SOILEXPOSUREANDAIRPATHWAY ........................... 23 6.1 Physical Conditions ....................................... 23 6.2 Soil and Air Targets ...................................... 23 6.3 Sample Locations ........................................ 23 6.4 Analytical Results ........................................ 24 6.5 Conclusions ............................................ 24 7.0 SUMMARY AND CONCLUSIONS ................................ 24 PHOTOGRAPHS APPENDIX A REFERENCES I I I I I I I I I n H D I m I I I Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. LIST OF TABLES Soil/Source Sample Locations and Descriptions . . . . . . . . . . . . . . . . . . . . . 8 Soil/Source Sample Analytical Data Summary Purgeable Organic Extaractable Organic Data Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Soil/Source Samples Analytical Data Summary Dioxin/Furan Data Report 11 Soil/Source Samples Analytical Data Summary Metals Data Report . . . . 12 Surface Water Pathway Sample Locations and Descriptions ........... 17 Surface Water Pathway Sample Locations and Descriptions Weyerhauser Co./ Plymouth ................................... 18 Surface Water Path~ay Sample Analytical Data Summary Purgeable Organic, Pesticide/PCB, Extractable Organic Data Report . . . . . . . . . . . . 19 Surface Water Pathway Samples Analytical Data Summary Dioxin/Furan Data Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Surface Water Pathway Samples Analytical Data Summary Metals Data Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 I I I I I I I I I I I m g D D D m • I Figure 1 Figure 2 Figure 3 Figure 4 LIST OF FIGURES Topographic Map and Site Location ............................ 2 Site Location and Off-Site Sampling Points . . . . . . . . . . . . . . . . . . . . . . 3 Site Layout and Sampling Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Washington County Orthophoto-Property Map ................... 6 I I I I I I I I I I I I I I R I I I I EXECUTIVE SUMMARY The Georgia-Pacific Corporation Hardwood Sawmill site is an inactive, 24-acre site located on Plywood Drive within the Plymouth city limits of Washington County. The Georgia-Pacific Corporation purchased the propeity in 1950 from the Atlas Plywood Company. Operational history and waste management practices of Atlas Plywood are unknown. During the years of operation by Georgia-Pacific Corporation (I 950-1983), the facility was engaged in sawing, planing, and treating of rough hardwood lumber and timber from logs. Following a catastrophic fire in 1983, the facility was permanently closed. Georgia-Pacific sold the site on January 2, I 985, deeding the property to Decatur Partnerships, the current owners of the site. The site was leased to Outerbanks Contractors who used a portion of the property as an asphalt mixing plant. The entire site is currently unoccupied and inactive. Process wastes associated with the plant consisted primarily of spent oil containing metals (D000-ignitable/D007-chromium, D008-lead), spent halogenated degreasing solvents (FOO I), spent non-halogenated degreasing solvents (F003/F005), and bottom sediment sludge from the treatment of wastewater from the wood preserving process (KOO I). The fungicide/insecticide treatment solution used at the facility contained pentachloropheneate, sodium metaborate, lindane, and other chlorophenol compounds. The estimated annual quantity of waste generated at the Georgia-Pacific facility included 20,000 pounds ofD000/ D007/ D008 waste, 375 pounds of FOOi/ F003/ FOOS wastes, and 16,300 pounds of.KOOi waste. During operations of the facility, wastes were either burned in the on-site boiler or disposed of at the county landfill. Application of the wood treatment solution was done as the rough lumber was passed through a dip vat located along a conveyor system. Soils in the vicinity of the dip vat were reportedly contaminated with wood preservative/insecticide compounds as a result of leakage and spillage of treatment solution from the vat. The company's practice of allowing freshly treated wood to drip excess treatment solution directly onto the ground also contributed to soil impact. The facility also included a machine shop and a transformer station. Prior investigations at the site include the December 6, I 985 Preliminary Assessment conducted by the North Carolina Division of Health Services, the October 11, 1989 Phase I Screening Site Inspection (SSI) completed by NUS Corp., the September 1991 Greenhorne & O'Mara Inc. Phase II Screening Site Inspection, and the April I 5, 1994 Dynamac Corp. Site Inspection Prioritization (SIP). Results of the Phase II SSI sampling event indicated that a release of hazardous chemicals associated with the wood treatment process had occurred at the site and that surficial soils and the surficial aquifer had been impacted. These chemicals included various pesticides, metals, and PCB's. Sampling for the Georgia-Pacific Corporation Hardwood Sawmill Expanded Site Inspection conducted by the North Carolina Superfund Section on June 19-20, 1995 focused on sediment and surface water samples collected from the Roanoke River and on surficial soil samples collected from the vicinity of the dip vat. I I I I I I I I I I m n D I I I I No groundwater samples were collected during the ESI because there are no monitoring wells on-site and the nearest drinking water well is approximately 1.25-miles south of the site. All samples were analyzed under the U.S. Environmental Protection Agency (EPA) Contract Laboratory Program (CLP). Because the nearest identified residential groundwater well is located : approximately 1.3-miles east of the site, no groundwater samples were collected during the ESI. Surface soil samples collected from the dip vat area exhibited elevated levels of various dioxin/furan isomers, metals, pesticides/PCB's, purgeable organic and extractable organic compounds. Some of these compounds are present at levels exceeding health based benchmarks for soil exposure. Sediment samples collected from the Roanoke River indicate that an observed release of aluminum, arsenic, iron, lead, pentachlorophenol, (3 and/or 4) methylphenol, benzo(b/k) fluoranthene, 2,3,7,8- TCDD, 1,2,3,7,8-PCDD, 1,2,3,4,7,8-HCDD, OCDD, and 2,3,7,8-TCDF has occurred. This segment of the Roanoke River is considered a fishery and is classified as a wetland. However, a fish consumption advisory is currently in place along this segment of the river due to elevated dioxin levels in fish tissue. Based on these results , it appears that the former Georgia-Pacific site poses a possible threat to human health and the environment and is therefore recommended for further remedial action under CERCLNSARA. I I I I I I I I I I I I n D I • I I 1.0 INTRODUCTION Under the authority of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) and the Superfund Amendments and Reauthorization Act of 1986 (SARA), the North Carolina Superfund Section conducted an Expanded Site Inspection (ESI) of the former Georgia -Pacific Corporation Hardwood Sawmill (NCD 000 813 592) facility in Plymouth, Washington County, North Carolina. The purpose of this investigation was to update information on conditions at the Georgia-Pacific site. Information regarding potentially impacted populations and sensitive environments not documented in the Site Inspection Prioritization report, April 15, 1994, was also updated. This data was used to assess the threat posed to human health and the environment and to determine the need for additional CERCLA/SARA or other appropriate action. The scope of the Expanded Site Inspection included review of available file information, a revised target survey, off-site reconnaissance (August 22, 1994), on and off-site sampling (June 19 & 20, 1995), and a more thorough evaluation of the surface water pathway. All samples collected during the ESI were analyzed under the U.S. Environmental Protection Agency (EPA) Contract Laboratory Program (CLP). 2.0 SITE DESCRIPTION, OPERATIONAL HISTORY, AND WASTE CHARACTERISTICS 2.1 Location The former Georgia-Pacific facility is located in a suburban area of Plymouth, North Carolina on Plywood Drive, approximately . 5 miles east of the downtown district. The site is located on the southern bank of the Roanoke River at 35° 52' 27" North Latitude and 76° 44' 27.5" West Longitude (Refs. I; 2; Figs. 1; 2). Directions to the site are as follows; take East Main Street Extension out of downtown Plymouth to Plywood Drive north, Plywood Drive enters the site. The area is characterized by a flat, low lying topography with elevation increasing south of the facility. The elevation of the facility is 5 feet above mean sea level (MSL). The surrounding areas range in elevation from 5 feet above MSL to 15 feet above MSL within a I mile radius of the site (Fig. 1 ). The 2-year, 24-hour rainfall is approximately 4 inches (Ref 3). Normal annual total precipitation in this area is 50 inches. Mean annual lake evaporation in this area is 41 inches, yielding a net annual rainfall of9 inches (Ref 4). 2.2 Site Description The former Georgia-Pacific Corporation Hardwood Sawmill site is an inactive sawmill and wood treatment facility. There are several burned out and dilapidated buildings, as well as the boiler house smoke stack, remaining at the site. The site is primarily overgrown with tall grass and trees although some sections are exposed hard packed dirt and gravel or concrete covered (Refs. 5, p.5; 8; 12; Photos). Figure 3 shows the physical details of the site as they were when the facility was active. The site is situated within the city limits of Plymouth . -.......... '. ·=a liiii lliii iiill -- -----lliil .. lliil iiiiil iiiiil ... . } .. : .. 1, " I .. ' Fig. No: 2 Title: Site Location and Off-Site Sampling Points Source: ua;s Top.a M3ps Pl}'IIDUth West& P.1.ymouth East North Carolina Division of: _!!_I City of Plymouth Water Distribution Waste Management 111 Washington County Water Distribution Superfund Section Scale: Not to 9:::ale Date: l0/17/96 Modified By: G.D. Rumford Site Name: Geo:gia-Pacific Corp. Har&oood Sawmill NCD 000 813 592 L -liiiiii-iiill iiiii1 -- - - --.., .., ..,_ .., -iiiil GP-009-SO ,t,, / GP-009-SUI I • ,,-,00 LoA.P 1 ~, I Oo« I I I GWDl I-/sso, ®(background) I flow - Burner ROANOKE Boiler House StackO Transformer Station..fef SS03~ ostacker m C --C. .c 0 O.c, ; 1/) : GP-004-SL -J GP-001-sn flow / GP-001-sw RIVER ~ -;;-i1-~ cc ~ □ G' GP-005-SL Temporary Stacking Area s~--- co~i;s~--- GP-006-SL Graen Chain Conveyor System y_ I : C: c- { ', ( ·'!"~ ., GP-0 10-S!I': i GP-010-SW ✓ ,; . --' la Former location of' r---------,.-j Lumber Shed ----, 'j old asphalt plant -I TCE Spill · I ~ Area f 1 GW-03~.,, 1 ; I s~~: ~ _). 1-- '--L---"------7 ---------------• ~-c.:-:::::::~J SED02 L --------------- v,,100CS U----'--(:_____ __ Q_L/ 'L(:__,l:___:o C -~~ (LL~ Fig. No: 3 Title: Site Layout and sampling Loctions Source: Greenhorne & O'Mara Georgia-Pacjfic Hardwood Sawmill 1-----------------l Phase II SSI September 1991 North Carolina Division of -GP-002-SL: NC Superfund Sample Designation WasteManagement SSOl: Greenhorne & O'Mara Sam le 0es· ation·- Superfund Section Scale: Not to Scale Date: 10/17/96 Modified By: G.D. Rumford Site Name: Georgia-Pacjfic Corp. Hardwood Sawmill NCD 000 813 592 I I I I I I I I I I I I I I I I The facility occupies approximately 24 acres ofland and is bordered by the Atlantic Coast Railroad on the west, the Roanoke River to the north, Plymouth High School and Boy Scouts of America properties to the south, and a residential area to the east (Refs. 7; 16; 42; Figs. I; 4). Access to the former Georgia-Pacific facility from Plywood Road is restricted by a gate, however, no property boundary fences were observed during the ESI (Refs. 5; 12; Photos). The nearest school, Plymouth High School, is located approximately .27 mile south of the site. A zone of dense woods separate the school from the site (Figs. I; 4). The nearest off-site residence is located approximately 800 feet east of the former wood treating portion of the facility (Fig. I). There are approximately 7002 residents within a 4-mile radius of the site (Ref 6). 2.3 Operational History and Waste Characteristics The property was originally owned by the Still family who operated the Atlas Plywood Company at the site._ A portion of the property was donated by the Still family to the Boy Scouts of America in 1948 (Refs. 36; 42). The Georgia-Pacific Corporation purchased the site property in I 950 from the Atlas Plywood Company. Operational history and waste management practices of Atlas Plywood are unknown. Georgia-Pacific subsequently tore down the existing structures and rebuilt the facility as a hardwood sawmill to produce treated and untreated rough lumber and/or timber from logs (Refs.7; 8; 9; 13). On November 12, 1980, Georgia-Pacific Corp. submitted a Resource Conservation and Recovery Act (RCRA) Part A Hazardous Waste Permit Application to the USEPA for the Plymouth hardwood sawmill. On August 11, 1982, the North Carolina Solid & Hazardous Waste Management Branch issued an acceptance for change in classification under RCRA for the Plymouth facility. The status of the facility was changed to small quantity generator from generator/storer (Refs. 9; I 0). Production activities at the facility were consistent throughout the period of it's operation (I 950-1983), as were the wastes generated by these activities (Ref 16 ). Process wastes associated with the plant consisted primarily of spent oil containing metals (D000-ignitable/0007-chromium, D008-lead), spent halogenated degreasing solvents (FOOi), spent non-halogenated degreasing solvents (F003/F005), and bottom sediment sludge from the treatment of wastewater from the wood preserving process (KOOi) (Refs. 7; 9; 11). The fungicide/insecticide treatment solution used at the facility contained pentachloropheneate, sodium metaborate, lindane, and other chlorophenol compounds (Ref 7). The estimated annual quantity of waste generated at the former Georgia- Pacific facility included 20,000 pounds ofD000/ D007/ D008 waste, 375 pounds of FOOi/ F003/ FOOS wastes, and 16,300 pounds of KOOi waste (Ref 9). During operation of the facility, these wastes were either burned in the on-site boiler or disposed of at the county landfill (Ref 7). Application of the wood treatment solution was done as the rough lumber was passed through a dip vat located along a conveyor system. Soils at this area of the site were reportedly contaminated with hazardous preservative/insecticide compounds as a result of leakage and spillage of treatment solution from the vat. The company's practice of allowing freshly treated wood to drip excess treatment solution directly onto the ground also contributed to soil contamination (Ref 7). The facility also included a machine shop and a transformer station. 5 I I I I I I I I I I I I I I I I I In 1983, a fire destroyed the sawmill building, machine shop, and the boiler house at the former Georgia-Pacific facility -resulting in permanent closure of the plant (Refs. 12; 16; 37). Georgia-Pacific sold the site on January 2, 1985, deeding the 24.11 acre property to Decatur Partnerships, the current owners of the site (Ref. 16). The property was then leased by Outerbanks Contractors and the southern portion of the site was used as an asphalt mixing plant (Refs. 15, pg.4; 37). Reportedly, a trichloroethene (TCE) spill(s) occurred during Outeroanks Contractors operation of the site. A composite soil sample was collected from the alleged TCE spill area during the September 1991 Phase II Screening Site Inspection conducted by Greenhorne & O'Mara Inc. The analytical results for this sample, as well as a sediment sample collected adjacent to this area, did not indicate that a release ofTCE had occurred (Ref. 15). Prior non-sampling investigations at the site include: the December 6, 1985 Preliminary Assessment completed by the NC Solid and Hazardous Waste Management Branch CERCLA Unit; the August 20, 1990 Phase I Screening Site Inspection, completed by NUS Corp.; and the April 15, 1994 SIP completed by DYNAMAC Corp. (Refs. 13; 14; 40). A total of nine (9) environmental samples were colle'<ted at the site during the September 1991 Greenhorne & O'Mara Inc. Phase II Screening Site Inspection. Results of this sampling event indicated that a release of hazardous chemicals associated with the wood treatment process had occurred at the site and that surficial soils and shallow groundwater had been impacted. These chemicals included arsenic, chromium, lead, and Arochlor-1254 in soils at the transformer station; various pesticides, barium, cobalt, lead, and Arochlor-1254 in soils at the dip vat and adjacent ditch; arsenic, barium, cadmium, and lead in soils adjacent to the TCE spill area (Refs. 15, pp.12 & 13; 40, pg.6). 3.0 WASTE / SOURCE SAMPLING 3.1 Sample Locations The primary source area identified at the former Georgia-Pacific facility is the contaminated soil at the dip vat/conveyor system. This area is estimated to be approximately 150 ft x 200 ft in size (Ref. 12). During the ESI, four (4) soil samples (GP-004-SL, GP-005-SL, GP-006-SL, GP-007-SL, and duplicate GP-107-SL) were collected from this area for characterization of the contaminated soil source area. A fifth soil sample (GP-002-SL) was collected from the drainage ditch that receives surface runoff from the source area. An associated background soil sample (GP-003-SL) was collected from the Boy Scouts of America property adjacent to the entrance of the site. This property is currently the location of the Plymouth Boy Scout Troops' meeting hall but was previously part of the property owned by Atlas Plywood Company (Ref. 42). All samples were collected from a depth ofless than two (2) feet below land surface (bis) and were analyzed under the USEPA Contract Laboratory Program (CLP)(Ref. 12). The TCE spill area was not sampled during the ESI because prior sampling was inconclusive in establishing it as a site source area. Other potential source areas not sampled during the ESI include soils at the transformer station and around the boiler house. Sample locations are illustrated on Figures 2, 3, & 4 and sample descriptions are outlined in Table I. 7 I I I I I I I I B D I I I I I I I Sample ID GP-002-SL GP-003-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL GP-107-SL ---- '' i ii/ = volatiles ' . -~:-{~. TABLE 1 Soil/Source Sample Locations and Descriptions Georgia-Pacific Hardwood Sawmill Site NCD ooo si3 s92 ,, ' .. '. ,: ~ 'comments/Notes Description Soil from On-site Drainage Establish Migration of Wood Ditch to PPE #2 '' · Treating Chemicals; 6" Depth Soil from Undisturbed "' Background; 3" Depth ,. Area On or Near Site ' ' .. '" Soil from Dip Tank and,· Source Area Identification; 6" Conveyor Belt Area '•· ,, Depth: Determine Extent of Contaminated Surface Soils . ·:!. , l" .. Source Area Identification; 6" Soil from Stacking Artfa_, '' and Conveyor Belt Area Depth: Determine Extent of ' ' .; . .Contaminated Surface Soils ••',!I';. ., '• Soil from Stacking Area·,' . Source Area Identification; 6" and Conveyor Belt Area " .. 'Depth: Determine Extent of Contaminated Surface Soils Soil from Dip Tank and .... ,. Source.-AreaJdentification; 12" Conveyor Belt Area ' . ,:: ', . Depth: Determine Extent of Contaminated Surface Soils 'II••'' ' .. ·:•. ,,. . ' i Soil from Dip Tank and•' r;>uplicate o( GP~.007-SL: ,•,;: Conveyor Belt Area.· . ~ '". . ' - ,., . l . -' ' S = semi-volatiles I= iriorg,i11ic~ P. = di_oxins . . ' ; ' ·f.l .•· . ' ' ' ' ' ' l.' ,•.J SL= soil Analytes V,S,I,D V,S,I,D ' V,S,I,D V,S,I,D • ••• I V,S,I,D V,S,I,D . '' V,S,I,D ·-· . ·-· .. . ' , .... ---':!'·~ ... ...i·\: I I I I I R u I I I I I I I I I I 3.2 Analytical Results The analytical data for soil samples collected from the wood treatment area, as well as from the drainage ditch that receives runoff from this portion of the site, indicate that surficial soils have been impacted with various pesticides, dioxins & furans, PCB's, metals, purgeable organics, and extractable organics. Arsenic, barium, manganese, zinc, lead, lindane, alpha-BHC, TCDD, PCDD, HCDD, OCDD, and HCDF were detected in the ditch sample at levels significantly above background. In the wood treatment area samples, Aroclor-1254, alpha-BHC, delta-BHC, lindane, alpha-chlordane, antimony, arsenic, chromium, copper, iron, lead, magnesium, mercury, nickel, sodium, zinc, pentachlorophenol, 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2,4,5- trichlorophenol, flouranthene, pyrene, chrysene, TCDD, PCDD, HCDD, HpCDF, OCDD, TCDF, PCDF, HCDF, HpCDF, and, OCDF were detected at levels significantly above background. The background soil sample contained an elevated concentration of pentachlorophenol (24000 ppb ). This level exceeds USEPA & North Carolina health based benchmarks for PCP (5300 ppb)(Ref 39). All analytical results are outlined in Tables 2, 3, 4 and detailed in Appendix A. 3.3 Conclusions The primary source area at the site is the contaminated soil around the dip vat/conveyor system, estimated to be approximately 150 ft x 200 ft in size. During the ESI, four (4) surficial soil samples were collected from this area, a fifth soil sample was collected from the ditch that drains this area, and a sixth soil sample was collected from the adjacent property for background comparison. Laboratory analytical data indicates that surficial soils in the vicinity of the dip vat and the drainage ditch have been impacted with various pesticides, dioxins & furans, PCB's, metals, purgeable organics, and extractable organics. Pentachlorophenol was detected in the background soil sample at a level exceeding health based benchmarks for soil exposure .. No other potential source areas were sampled during the ESL 4.0 4.1 GROUNDWATER PATHWAY Hydrogeologic Setting The former Georgia-Pacific Corporation Hardwood Sawmill Plymouth facility is located within the Coastal Plain Physiographic Province which is characterized by a flat landscape of coastal swamps and marshes grading to rolling uplands along the inner margin of the region. The area is underlain by unconsolidated sediments that consist principally of sand, silt, and clay. These sediments, originally deposited by streams from the adjoining uplands, have a relatively uniform layering and dip orientation towards the coast. The greatest thickness of these formations is along the seaward edge of the region (Refs. 17, p.52; 18, p.23). The predominant formation type of this belt is the sandy, fossiliferous clay of the Yorktown Formation (Ref 19). The Coastal Plain is covered with a layer of post-Yorktown age surficial deposits that ranges in thickness from a few feet to about 30 feet. 9 TABLE 2 SOIi/SOURCE SAMPLE ANALYTICAL DATA SUMMARY PURGEABLE ORGANIC, PESTICIDE/PCB, EXTRACTABLE ORGANIC DATA REPORT (ug/kg) Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 BACKGROUND SOIL SOIL SOIL SOIL SAMPLE SAMPLE SAMPLE SAMPLE GP-003-SL GP-002-SL GP-004-SL GP-005-SL Methvl Ethvl Ketone 6J 10U 12U 17U Alpha-BHC 2.2U 5.5 11 14U Beta-BHC 2.2U 2.9U 6.7J 14U Delta-BHC 2.2U 8.6 11U 14U Gamma-BHC (Lindane) 2.2U 12 21 14U Alpha-Chlordane /2 .. . . 2.2U 2.9U 11U 15 PCB 1254 (Aroclor 1254) 42U 57U 600 270U ' (3-and/or 4-\Methvlohenol . 410U 570U 12oou·: 550U · · 1,2,4-Trichlorobenzene 410U 570U 1200U: 550U 2,4,6-Trichlorophenol .. 410U 570U 1200U -·55ou .. 2,4,5-Trichlorophenol · 1000U · 1400U 3100U 1400U Pentachlorophenol 24000 1400U 6900 1400U Fluoranthene 410U 120J 1200U 550U Pvrene 410U 190J 1200U 550U Chrvsene 410U 120J 1200U 550U Benzo(B and/or K\Fluoranthene 410U 260J 1200U 550U U: Material analyzed for but not detected. Value given is the minimum quantitation limit J: Estimated Value C: Confirmed by GCMS NA: Not Analyzed •• : Cancer Risk Screen Concentration (ppb) • : Reference Dose Screen Concentration (ppb) Concentrations in Bold>= 3X Background or>= CRDL when Background is< CRDL SOIL SOIL SOIL SAMPLE SAMPLE SAMPLE GP-006-SL GP-007-SL GP-107-SL NA 24U 27U NA 31000C 55000C NA 12000U 3600U NA 48000C B0000C NA 72000C 130000C NA 830U 920U NA 1600U 18000U , . NA 24000UJ 24000UJ . ' NA 4800J 24000UJ NA 2800J 24000UJ . NA 6800J 61000UJ NA 21+E6J 24+E6J NA 9400J 24000UJ NA 97000J 6800J NA 16000J 24000UJ NA 24000UJ 24000UJ HRS Hazardous NC Soil Substance Remediation Benchmarks Goals (ppb) (Ref. 38\ /Ref. 39) 4.7+E7' 9.4+E6 . . . . 100 .. 100 360** 350 . . 490 •• 490 . 490 83 ·~ 100.0 . . . . 3.9+E6• 7.8+E4 7.8+E5 • . 1.56+E5 5.8+E4 •• 5.8+E4 7.8+E6 • 1.56+E6 5.3+E3 •• 5300 3.1+E6• 6.2+E5 2.3+E6 • 4.6+E5 8.8+E4 • 8.8+E4 880 •• 880 -- ',;,_;, --------••. J SOIUSOURCE SAMPLES ANALYTICAL DATA SUMMARY DIOXIN/FURAN DATA REPORT (NG/KG) Georgia-Pacific Corp. Hardwood Sawmill NCO 000 813 592 BACKGROUND DITCH ' i SOIL .. SOIL SOIL· ' " SAMPLE SAMPLE SAMPLE GP-003-SL GP-002-SL GP-004-SL 2,3,7,8 Tetrachlorodibenzodioxin 2.5U 19J 82J T etrachlorodibenzodioxin IT otal) 2.5UJ 50UJ 260J 1,2,3,7,8 Pentachlorodibenzodioxin 2.5U 170 1500 Pentachlorodibenzodioxin (Total) 10UJ 650J 22000J 1,2,3,4,7,8 Hexachlorodibenzodioxin 2.5U 220 5000 1,2,3,6,7,8 Hexachlorodibenzodioxin 10U 830 43000J 1,2,3,7,8,9 Hexachlorodibenzodioxin 10U 500 7400 Hexachlorodibenzodioxin (Total) 50UJ 4600J 160000J 1,2,3,4,6, 7,8 Heotachlorodibenzodioxin 220U 16000 320000J Heotachlorodibenzodioxin <Total) 540UJ 32000J 620000J Octachlorodibenzodioxin (T otan 4900U 92000J 370000J 2,3,7,8 Tetrachlorodibenzofuran . 2.5U 30U 300 Tetrachlorodibenzofuran (Total) 3.0UJ B0UJ 2600J 1,2,3, 7,8 Pentachlorodibenzofuran 2.5U 30U 480 2,3,4,7,8 Pentachlorodibenzofuran 2.5U BOU 86 Pentachlorodibenzofuran lTotan 10UJ 500UJ 33000J 1,2,3,4,7,8 Hexachlorodibenzofuran 2.5U 59 3600 1,2,3,6,7,8 Hexachlorodibenzofuran 2.5U 90U 1700U 1,2,3,7,8,9 Hexachlorodibenzofuran 2.5U 36 1400 2,3,4,6,7,8 Hexachlorodibenzofuran 2.5U 120 3700 Hexachlorodibenzofuran {Total) ·i . 30UJ ,, 2100J 14000J 1 ,'2,3,4,6,7,8 Heotachlorodibenzofuran 20U !, 1400 81000U 1 :2,3,4,7,8,9 Heotachlorodiben'zofuran 2.5U i: 81 10000 H~otachlorodibenzofuran lTota'n 50UJ ' ,. 4000J 9800J ' . " Octachlorocibenzofuran /Total)' 30U ; 1500 90000J TEO (Toxic. Equiv. Value Frorl.·1-TEF/891 0 ' 550J 11000J ,, t I ~ ~ . ~ Concentrations in Bold >= 3X Background or>= CRDL when Background is< CRDL -:U~ Material analyzed for but ncif: detected. Value given is tt,J minimum quantitation limit · J:~Estimated Value --· !~ -·· · . · · f, · · · •· · Cancer Risk Screen Concehtration (ppt) · · -.r -. --1. '., .. ···\}\.}: Y-r;::.--:.,<.· : SOIL SOIL SAMPLE SAMPLE GP-005-SL GP-006-SL 180J 1100J 420J 4200J 2900 18000 22000J 200000J 4100 5000 45000J 1100000J 11000 99000 180000J 3000000J 120000J 8300000J 230000J 1.40E+07 360000J 2.60E+07. 660 8000J 6500J 32000J 910 18000 4100 37000 80000J 460000J 2900 100000 4100U 42000U 1900 55000 6100 86000 140000J 3700000J 46000U 2200000U 4000 230000 3800J 220000J 120000J 1.30E+07 13000J 300000J SOIL SAMPLE GP-007-SL 2200J 4300J 28000 140000J 67000 990000 140000 2900000J 8400000J 1.50E+07 2.90E+07 13000J 62000J 20000 40000 500000J 94000 47000 56000 79000 3200000J 1800000U 200000 6000000J 1.30E+07 310000J --- l HRS l SOIL Hazardous NC Soil SAMPLE Substance Remediation GP-107-SL Benchmarks Goals (ppt) /Ref. 381 /Ref. 391 1400J 4 •• - 8100J - - 20000 8 •• - 120000J - - 52000 40*'" - 1200000J 100 ** - 110000 100 •• - 3200000J -- 1.0+E7 400 ** - 1.6+E6 - - 3.9+E7 -4000 16000J 40 ** 40 95000J - - 23000 80 •• 80 70000 8 •• - 750000J -- 95000 40 ** - 40000U 40-- 60000 40 ** - 79000 40-- 3600000J - - 2000000U 40 •• - 200000 -- 7800000J - - 1.7+E7 -4000 370000J - - I· . - l!!!!!!I -.. -- - -- -- - - TABLE 4 . ' <' ..... ; .... .::.:i:·c ,--,, ' . . ::(t• ~1 : SOIL/ SOURCE SAMPLES ANALYTICAL DATA SUMMARY METALS DATA REPORT (MG/KG) Georgia-Pacific Corp. Hardwood Sawmill NCO 000 813 592 i I BACKGROUND DITCH SOIL SOIL SOIL SOIL SOIL SOIL SAMPLE SAMPLE SAMPLE SAMPLE SAMPLE SAMPLE GP-003-SL GP-002-SL GP-004-SL GP-005-SL GP-006-SL GP-007-SL Aluminum 4200 4300 3200 5000 3900 820 Antimonv 3.4UJ 4.8UJ 8.1J 10UJ 5.6UJ 6.2UJ Arsenic 1.SJ 5.4, 6.9 48 11 7 Barium 41J 140J 60J 190J 92J 42J Be""lium 1U 1U 1U 1U 0.25U 0.27U Cadmium 0.25UJ 1UJ 1UJ 2UJ 1UJ 0.46UJ Calcium 1800J 17000J 100000J 53000J 9300J 2300J Chromium 8.9J 11J 9.7J 130J 28J 23J Cobalt 2UJ 3UJ 2UJ 5UJ 3UJ 0.78UR Coooer 5UJ 13J 63J 79J 73J 46 Iron 5900 9200 7800 120000 33000 28000 Lead 15 250 89 120 55 26 Maanesium 450J 660J 1900J 1100J 610J 100UJ Manaanese 92J 790J 140J 380J 210J 66J Mercury 0.06U 0.09U 0.06U 0.09U 0.58 0.12U Nickel ' 2.2J 5.1J 34J 58J 10J 5.9J Potassium 270J 370J 500J 340J 390J 91J Selenium 0.62U 0.88U 0.60U 0.90U 1U 1.1U- Silver 0.67U 0.95U 0.64U . 0.97U 1.1U ,.1.2U Sodium 32 • 77 140 130 86 61 Thallium 1.3U 1.8U 1.2U 1.9U 2.1U :2.4u Tin NA NA NA NA NA ; NA Vanadium i 14J 2ot.iJ 8UJ 20'uJ 20UJ \5uJ Zinc .. ' 29J 100J 510J 660J 210J -., 64J · i 1 -{ U: Material was analyzed for but not detected. Value is minimum qua~tttation li[ll~ J: Estimated _Val~e. . -~,. f . . -----l; . . Concentrations in'. Bold >; 3X Background or>; CRDL when Background is < CRDL •• : Cancer Risk Screen Concentration (pp,,'.;) · . ; •: Referen~eDose Screen Concentration (ppm)·:' · l SOIL SAMPLE GP-107-SL 880 20UJ 6.2J 48J 0.46U 0.77UJ 2300J 23J 1.3UR 58J 28000 29 120UJ 61J 0.21U 9UJ 130J 1.9U 2.1U 110 4U NA 6UJ 83J - - - - - HRS Hazardous NC Soil Substance Remediation Benchmarks Goals (ppm) I Ref. 38\ I Ref. 39\ - - 3.1+E1 • 6.2 4.3+E-1 •• 4.6 5.5+E3 • - 1.5+E-1 •• 0.15 3.9+E1 • 7.8 -- 3.9+E2 • 78 - - -620 - - -400 - - 1.4+E4 • - 2.3+E1 • 4.6 1.6+E3 • 320 -- 3.9+E2 • 78 3.9+E2 • 78 - - -1.26 - - 5.5+E2 • - 2.3+E4 • 4600 I I I I I I I I I I I I I I I I I I I Soils in the area of the site are primarily of the Tarboro soil series. The Tarboro soil series is excessively drained and nearly level. Typically, this soil has a dark grayish brown sand surface layer 12 inches thick grading to a subsoil of brownish yellow sand to a depth of 60 inches and a pale brown sand below a depth of99 inches. Soils of the Muckalee loam soil series are also present at the site along the southern edge of the property. The Muckalee loam is nearly level and very poorly drained; it is found in swampy areas near the Roanoke River. This soil consists of dark grey loam to a depth of 20 inches grading to a loamy sand below a depth of 42 inches (Ref. 20, pp.16,20,52,56, sheet 5). In the area of the Coastal Plain region where the site is located, the surficial deposits are underlain by the shallow confined Yorktown Aquifer, followed by the confined Pungo Aquifer, and the deep confined Castle Hayne Aquifer (Refs. 21, p.70; 22, pp.24, 25). The extent of water withdrawal from the aquifers overlying the Castle Hayne in the vicinity of the site is unknown; no groundwater targets were identified for aquifers other than the Castle Hayne. The principal source of groundwater in the vicinity of the site is the confined Castle Hayne Aquifer of the limestone, sandy limestone, and sand Castle Hayne Formation (Refs. 23, p.53; 24, p.330). Recharge to the surficial aquifer is directly from precipitation. Recharge to the underlying groundwater system occurs in the upland interstream areas where sand layers crop out (Refs. 18, p.24; 27, p.14). Discharge from the system occurs by seepage to streams, estuaries, and the ocean. Movement of water from recharge areas to discharge is controlled primarily by the hydraulic gradients of the dipping beds (Refs. 17, p.52; I 8, p.24). Site-specific geologic data regarding the Castle Hayne Aquifer is not available, however, this aquifer is generally found in Washington County at a depth ranging from about 120 feet in the western part of the county to about 400 feet in the eastern part (Ref. 23, p.53). Based on production well depths in Plymouth, approximately I. 25 fo I. 5 miles south of the site, the Castle Hayne Aquifer is found at approximately 115 feet below land surface (Refs. 5; 12; 25; Fig. 1). Water level readings collected from three temporary shallow on-site groundwater monitoring wells revealed that groundwater occurs at the site at a depth between 3.5 to 5.0 feet below ground surface (Ref. 15, p. 8). The average hydraulic conductivity value for the Castle Hayne Aquifer was estimated to range between approximately 15 ft/day to 200 ft/day (5.3xl0-3 cm/sec to 7. lx!0-2 cm/sec)(Ref. 22, p.25). The average thicknesses for the confining units of the Yorktown, Pungo, and Castle Hayne Aquifers are 25, 55, and 10 ft. respectively (Ref. 22, pp.20,22,25). Vertical hydraulic conductivity values of the typical clay bed confining unit material range from 6x10·• cm/sec to 2.35x10·11 cm/sec (Ref. 22, p.60). 4.2 Groundwater Targets Most residents in the vicinity of the former Georgia-Pacific facility are served by the municipal water system of the City of Plymouth. The city system is supplied by four drilled wells ranging m depth from approximately 115 to 185 feet which were installed in 1964 (Ref. 25). 13 I I I I I I I I I I I I I I I I m The Plymouth system supplies approximately 4119 residents within the city limits; 1850 customers outside the city limits are served by the Washington County Water Department which purchases water from the City of Plymouth (Ref 25). All four of the city wells are located roughly 1.25 to 1.5 miles south of the site (Fig. 1). Based on the depth of these wells, they are likely screened in the Castle Hayne Aquifer (Ref 23, p.53). The nearest residential well is located approximately 1.3 miles east of the site (Ref 27; Fig. 1). There are no monitoring wells or production wells in use at the former Georgia-Pacific facility. There are no designated well head protection areas located within the 4-mile site radius (Ref 26). The wells of the Plymouth water system were the only community wells identified within 4 miles of the site. There are approximately 6912 groundwater users within a 4 mile radius of the site (Ref 27). A breakdown of the groundwater users per distance ring follows: 4.3 Sample Locations Distance Ring 0 -1/4 mi. >1/4-1/2 >1/2 - 1 >1-2 >2 -3 >3 -4 Total Groundwater Pop. 0 0 0 5989 395 528 6912 Groundwater samples were not collected during the ESI because no private drinking water wells were identified within 0.5-miles of the site, nor were any shallow groundwater aquifer users identified {Ref 12; Fig. 1 ). The City of Plymouth is required to perform yearly sampling and analysis of its water system for volatile organic compounds (VOC's), semi-volatile organic compounds (SVOC's), and inorganics. The results of the latest sampling analysis were provided by the city, consequently, these wells were not resampled during the ESL During the September 1991 Greenhome & O'Mara Inc. Phase II Screening Site Inspection, groundwater samples were collected from three (3) shallow, hand-augured temporary wells at locations in the dip vat area, in the alleged TCE spill zone, and a background area at the site. Laboratory results indicated the presence of arsenic, chloroethane, alpha-BHC, delta-BHC, and lindane in the two (2) source area samples while no contaminants were detected in the background. (Ref 15; Fig. 3). 4.4 Analytical Results At the time of the ESI sampling event, organic compound analytical results for post-treatment samples collected from the City of Plymouth system in October 1993 and June 1994 were available. No chemical contaminants were detected above maximum contaminant levels (MCL's) allowable in NC public drinking water supplies. Inorganic chemical analyses for the city system was available from 1995. Detected inorganics included fluoride, nitrate, iron, sulfate, and sodium; none of which were above allowable limits (Ref. 28). 14 I I I I I I I I I I I I I I I I 4.5 Conclusions Most of the residents in the vicinity of the site receive their potable water from the City of Plymouth water system which is supplied by four wells located approximately 1.25-1. 5 miles south of the site. Those residents within the 4-mile site radius that do not receive city-supplied drinking water utilize private wells for drinking water. The nearest private drinking water well, relative to the wood treatment area of the former Georgia-Pacific facility, is located approximately 1.3 mile east. The primary drinking water aquifer in the area is the confined Castle Hayne Aquifer. Treated water from the Plymouth system did not exhibit any contaminants exceeding the state MCL's. Although contaminants were previously detected in two temporary wells intersecting the shallow groundwater zone at the site, the Castle Hayne Aquifer is not expected to be impacted as it is confined and approximately I I 5 feet bis. 5.0 SURFACE WATER PATHWAY 5.1 Hydrologic Setting The former Georgia-Pacific facility site is located in the watershed of the Roanoke River. A loading dock and piers are located on the river near the western edge of the site. Because the site is bounded by the Roanoke River to the north, runoff from this portion of the site will flow directly into the river. This point along the Roanoke River adjacent to the western edge of the site is therefore believed to be the most upstream probable point of entry (PPE #I) for the site. All other surface run-off from the site is directed to a drainage ditch at the eastern portion of the property (Ref 12; Figs. 3; 4). The mouth of this drainage ditch on the Roanoke River is believed to be the most downstream probable point of entry (PPE #2) of site drainage to the surface water pathway (SWP). The distance from PPE #I to PPE #2 is approximately 800 feet. The distance from the primary source area to PPE # I and PPE #2 is approximately 650 feet and 300 feet respectively (Fig. 4). From PPE #2, the SWP continues along the Roanoke River'for approximately 6 miles where it enters the Albemarle Sound. The end of the 15-mile SWP target distance limit is an arc, 7 miles into the Albemarle Sound, that joins each shore of the sound (Fig. I). A floodplain map was unavailable for the section of Washington County where the site is located. However, based upon the topography of the area, the Georgia-Pacific site is most likely located within the I 00-year floodplain of the Roanoke River. The mean annual flowrate of the Roanoke River at the mouth is approximately 8900 cubic feet per second (cfs) (Ref 29). 15 I I I I I I I I I I I I I I I I I I I Sample ID GP-001-SD GP-001-SW GP-101-SD GP-101-SW GP-009-SD GP-009-SW GP-109-SD Matrix Spike GP-109-SW Matrix Spike GP-010-SD GP-010-SW GP-013-RN GP-016-TP GP-017-PB TABLE 5 Surface Water Pathway Sample Locations and Descriptions Georgia-Pacific Hardwood Sawmill Site NCI> 000 813 592 . Description Roanoke River · ... Sediment & Surf~ce:i°:1;··, Water Below Site Drainage PPE #2 .. Roanoke River ·l .. Sediment & Surface· : Water Below Site :: Drainage PPE #2 ,. \. Roanoke River Sediment & Surface Water at PPE #2 Near. Site Property Boundary Comments/Notes · Establish Release of Site · Coiitaininants to Roanoke . River Fishery at PPE #2 Duplicate of GP-001-SD & GP-001-SW Establish Release of Site Contaminants to Roanoke . ~iver Sens. Environ. & ·Fisliery Analytes V,S,I, Dioxin for Sed. only V,S,I, Dioxin for Sed. only V,S,I, Dioxiri for···-·--~"-' Sed. only Roanoke River . Duplicate of GP-009-SD · V,S,I,D Sediment at PPE #2·J.;:1:, : ,_, ·,·, Roanoke River Surface Duplicate of GP-009-SW V,S,I Water at PPE #2 · •·· · '" · , ... ,,.,. . Roanoke River · '::. r ., Establish Release of Site Sediment & Surfat6 '0 '-'''. • \'::t:intarnin~ts to Roanoke Water: Below Site Drainage PPE #2 • River Sens. Environ. & .. ·. .. · Fishery · Pre-trip Rinsate Blank ·,: 'QA/QC of Lab Cleaning Collected from Dredge ,, Techniques · · Preservativeffrip Biai:ik.. QA/QC ··;·-,.,.. Post-Preservative Blank-QA/QC , V,S,I, Dioxin for Sed. only I .. •:-.. 1/ = volatiles S = semi-volatiles I= iniirgatjii:s }D:':' dioxins SD= sediment ·: . _': .. ~; · · ·sw = Surface Water RN= rinsate blank .:TP·=' trip blank PB= preservative blank . . . . . . t·-----' :.·.. i---_,_: .. __ ~.: •• :,."~-~~· .• :;_J_:_-~-,-~ \.,_ --~-::;··:·'. ; r·. ,.;..., . L •... '] 61' '. . .. ",).,'/;.., ,'.' •'':: ':~ ... : , ' ; ,,'~ ' ' .. ,. ·- I . . ' ' j r< •• , "'--·";.,,"-..,-::;.; ;n..•,.~~-f ,:\ ... · :..--...-:~+· ..... ,.,·, _., -;-: I. I ~ -,.. I I I I I I I I I ,I I I I I I I I I Sample ID WC-003-SD WC-003-SW WC-004-SD WC-004-SW WC-005-SD WC-005-SW WC-006-SD WC-006-SW WC-007-SD WC-007-SW WC-107-SD WC-107-SW WC-008-SD WC-008-SW TABLE 6 Surface Water Pathway Sample Locations and Descriptions Weyerhauser Co./ Plymouth NCD 991 278 540 Description Comments/Notes Analytes Roanoke River Sediment Establish Release_ of Site V,S,I, & Surface Water: . IO mi. Contaminants to Roanoke Dioxin for Below Mouth of Welch River Sens. Environ. & Sed. only Cr. Fishery Roanoke River Sediment Attribution of Site V,S,I,D & Surface Water at Contaminants to Roanoke Welch Cr. River from Welch Cr. Welch Cr. Sediment & Establish Release of Site V,S,I,D Surface Water 1/2-mile Contaminants to Welch Below PPE 2; Treatment Cr. Fishery Ponds Discharge Point Welch Cr. Sediment & Welch Cr. Background V,S,l,D Surface Water Below Hwy 64 Bridge Roanoke River Sediment Attribution of Site V,S,I, & Surface Water at Site Contaminants to Roanoke Dioxin for Drainage PPE I River from Chlorine Sed. only Building Roanoke River Sediment Duplicate ofWC-007-SD V,S,I, & Surface Water at Site & WC-007-SW Dioxin for Drainage PPE I Sed. only Roanoke River Sediment Roanoke River V,S,I,D & Surface Water at Background Warren Neck Cr. V = volatiles S = semi-volatiles I = inorganics D = dioxins SW = surface water SD = sediment , - -- - -- -------- TABLE 7 Surface Water Pathway Sample Analytical Data Summary PURGEABLE ORGANIC, PESTICIDE/PCB, EXTRACTABLE ORGANIC DATA REPORT (uglkg) Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 BACKGROUND SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE WC-003-SD WC-004-SD WC-005-SD Methyl Ethyl Ketone 12J 9J 14U Alcha-BHC 3.SU 5.0U 2.6U Beta-BHC 3.SU 5.0U 2.6U Delta-BHC 3.SU 5.0U 2.6U Gamma-BHC (Lindane) 3.SU 5.0U 2.6U Aloha-Chlordane /2 3.SU 5.0U 2.6U PCB 1254 IAroclor 1254) 69U 97U 51U 3-and/or 4-)Methvmhenol 700U 970U 520U 1,2,4-Trichlorobenzene · 700U 970U 520U 2,4,6-Trichlorochenot 700U 970U 520U 2,4,5-Trichlorochenol 1800U 2400U 1300U Pentachlorophenol 1800U 2400U 1300U Fluoranthene 700U 970U 520U Pyrene 700U 970U 520U Ch~ne 700U 970U 520U Benzo(B and/or K)Fluora:nthene 700U 970U 520U U: Material analyzed for but not detected. Value given is the minimum quantitation limit J: Estimated Value C: Confirmed by GCMS NA: Not Analyzed Concentrations in Bold >= 3X Background or>= CRDL when Background is < CRDL SEDIMENT SEDIMENT SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE SAMPLE SAMPLE WC-006-SD WC-007-SD WC-008-SD GP-001-SD GP-101-SD t3U 21U 20U 25U 16J 2.8U 4.0U .CSU 21U 3.6U 2.8U 4.0U .CSU 21U 3.6U 2.8U 4.0U .CSU 21U 3.6U 2.8U 4.0U .CSU 21U 3.6U 2.8U 4.0U .CSU 41U 3.6U 54U 77U 61U 410U 71U 540U 770U 610U 820U 720U 540U 770U 610U 820U 720U 540U 770U 610U 820U 720U 1400U 1900U 1500U 2100U 1800U 1400U 1900U 1500U 19000 1800U 540U 770U 610U 820U 110J 540U 96J 610U 180J 140J 540U 770U 610U 820U 720U 540U 770U 610U 120J 110J SEDIMENT SAMPLE GP-009-SD 27 21U 21U 3.7J 5.3J 21U 410U 1200 810U 810U 2000U 9500 420J 810J 490J 870 SEDIMENT SEDIMENT SAMPLE SAMPLE GP-109-SD GP-010-SD 24U 19U 7.0U 16U 4.1U 16U 4.1U 16U 4.1U t6U 4.1U t6U eou 310U 2400U 620U 2400U 620U 2400U 620U 6000U 1600U 9200 1600U 410J 120J 640J 150J 410J 620U 680J 120J - -------liii -- - .. TABLE 8 SURFACE WATER PATHWAY SAMPLES ANALYTICAL DATA SUMMARY DIOXIN/FURAN DATA REPORT (NG/KG) Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 BACKGROUND SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE WC-003-SD WC-004-SD WC-005-SD 2,3, 7 ,8 T etrachlorodibenzodioxin 2.1J 17J 23J T etrachlorodibenzodioxin n otan 7.3J 24J 23J 1,2,3, 7 ,8 Pentachlorodibenzodioxin 10U 5.0U 5.0U Pentachlorodibenzodioxin rr otan 10UJ 5.0UJ 5.0UJ 1,2,3,4,7,8 Hexachlorodibenzodioxin 1.1J 1.9J 5.0U 1,2,3,6,7,8 Hexachlorodibenzodioxin 1.7J 3.9J 3.BJ 1,2,3,7 ,8,9 Hexachlorodibenzodioxin 2.0J 3.6J 2.9J Hexachlorodibenzodioxin fl otal) 30J 59J 26J 1,2,3,4,6, 7,8 Heotachlorodibenzodioxin 57 97 31 Heotachlorodibenzodioxin ITotan 160J 310J· 39J Octachlorodibenzodioxin (Total) .. 2500J .· 3100. ,,,.• 920. 2,3,7,8 Tetrachlorodibenzofuran 10 89 · 160 Tetrachlorodibeniofuran ( I otan 18J 190J, 330J. 1,2,3, 7 ,8 Pentachlorodibenzofuran · 10U 5.0U-. 5.0U· 2,3,4,7,B Pentachlorodibenzofuran , 10U 5.0U 5.0U Pentachlorodibenzofuran <Total) .. 1.6J 5.0UJ 5.0UJ ... - 1,2,3,4,7,8 Hexachlorodibenzofuran · .10U . ,2.SJ" . -5.0U 1,2,3,6,7 ,8 Hexachlorodibenzofuran 10U 0.74J 5.0U 1,2,3,7 ,8,9 Hexachlorodibenzofuran 10U s.ou· 5.0U 2,3,4,6,7 ,8 Hexachlorodibenzofuran 10U 1.4J · s.ou· Hexachtorodibenzofuran Cl ota[) 5.7J 20J 5.0UJ 1,2,3,4,6,7,8 Heotachlorodibenzofuran 7.2J 20 2.BJ 1,2,3,4,7 ,8,9 Heotachlorodibenzofuran 10U 5.0U 5.0U Heotachtorodibenzofuran , 1 otan 17J SOJ 8.3J Octachlorodibenzofuran fTotan a.BJ 29 10U TEO { 1 oxic. Equiv. Value, From l·TEF/89l 6.7 32J 41 Concentrations in Bold >= 3X Background or>= CRDL when Background is< CRDL U: Material analyzed for but not detected. Value given is the minimum quantitation limit J: Estimated Value SEDIMENT SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE SAMPLE WC-006-SD WC-007-SD WC-008-SD GP-001-SD 4.9J 1.0U 1.0U 23J 5.5J 12J 8.9J 30UJ 5.0U 5.0U 5.0U 3.5 5.0UJ 5.3J 3.2J 30UJ 5.0U 2.7J 1.5J 10U 1.5J 6 3.?J 60U ·2.2J 6.8 4.3J 20U . 12J 130J 75J 250UJ 39J 190 110 990U ·52J . 320J 140J 2300U '"' ·1900 •.7300J · 4300J 5600J 39 5.0U 1.0U 200 .. 79J 16J 10J 370J 5.0U · 5.0U 5.0U 10U 5.0U .. 1.?J 5.0U-20U ... 5.0UJ ., , 12J ... 9.0J S0UJ ,s.ou : 5.0U .s.ou. 10U 5.0U 1.0J 5.0U 6.0U 5.0U · 5.0U 5.0U 2.SU 5.0U 1.7J 1.3J 10U 5.0UJ 23J 8.9J 240UJ 2.7J 23 9.2 110U 5.0U 5.0U 5.0U 10U 2.7J 52J 26J 340UJ 8.2J 26 22 150U 12J 12J 6.6J 45 --- SEDIMENT SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE SAMPLE GP-101-SD GP-009-SD GP-109-SD GP-010-SD 13J 23J 24J 5.BJ 20UJ 30U 40UJ 10UJ 3.4 3 5.0J 2.SU 30UJ 20UJ 30UJ 10UJ 5.3 10U 25U 2.SU ?OU 20U 120U 20U 20U 10U 30U 10U 240UJ 110UJ 490UJ ?0UJ 1400U 310U 2100U 480U 2600UJ 950UJ 3900UJ 980UJ 5100U 4000U 18000 4100U 120 190J 200 53 230J 300J 380J 100UJ 10U 2.SU 25U 2.SU 10U 10U 25U 2.SU 40UJ S0UJ 250UJ 20UJ 2.SU 2.SU 25U 2.SU 2.SU 10U 25U 2.SU 10U 2.SU 25U 2.SU 10U 10U 25U 2.SU 250UJ 90UJ 410UJ 40UJ 180U 60U 260U 40U 10U 2.SU 25U 2.SU 600UJ 150UJ 780UJ 110UJ 280U 90U 470U 110U 27 44 64 11 ---- -- - ------ - TABLE 9 SURFACE WATER PATHWAY SAMPLES ANALYTICAL DATA SUMMARY METALS DATA REPORT (MG/KG) Georgia-Pacific Corp. Hardwood Sawmill NCO 000 813 592 BACKGROUND SEDIMENT SEDIMENT SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE SAMPLE SAMPLE WC-003-SD WC-004-SD WC-005-SD WC-006-SD WC-007-SD Aluminum 2100 21000 1900 7100 18000 Antimony 6UR 7.6UR 4UR 4.5UR 6.2UR Arsenic 3U 3U 0.96U 2U 4U Barium 190 200 85 41 200 Bervllium 0.26U 2U 0.17U 0.20U 1U Cadmium 0.44U 0.56U 1U 0.33U 0.46U Calcium 1900 3600 150000 1300 1500 Chromium 41 46 98 8.7 37 Cobalt 20U 20U 3U 3U 20U Conner 27 30 8.4 7.7J • 29 Iron 36000 35000 4300 6800 37000 Lead 20 26 11 31 21 Maanesium 3500 3300 2200 450 3400 Manoanese 990 790 71 55 1200 Mercurv 0.2U 0.28 1 0.09U 1.7 Nickel 15.J 16J 21 3U 15.J Potassium 2100 1900 230 390 2000 Selenium 1.1U 1.4U 0.73U 0.82U 1.1U Silver 1.2U 1.5U 1J 0.89U 1.2U Sodium 150U 210U 610 70U 160U Thallium 2.3U 2.9U 1.5U 1.7U 2.4U Tin NA NA NA NA NA Vanadium 62 68 20U 20U 62 Zinc 110 120 50U 40U 100 U: Material was analyzed for but not detected. Value is minimum quantitation limit J: Estimated Value Concentrations in Bold >= 3X Background or>= CRDL when Background is < CRDL SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE WC-107-SD WC-008-SD GP-001-SD 21000 18000 17000 6.5UR 5.4UR 6.1UJ 4U 2.9J 4U 220 160 180J 0.29U 1U 2U 0.48U 0.40U 1UJ 1700 1500 1700J 41 32 30J 18 20U 20UJ 30 22 22J 42000 29000 31000 22 16 30 3700 3200 3200J 1300 770 720J 2.1 0.09U 0.10U 16J 13J 14J 2200 1900 1900J 1.2U 0.99U 1.1U 1.3U 1.1U 1.2U 170U 130U 130 2.5U 2.1U 2.3U NA NA NA 71 52 58J 110 89 120J SEDIMENT SAMPLE GP-101-SD 20000 5.7UJ 4J 190J 2U 1UJ 1700J 25.J 20UJ 23J 32000 30 3200J 710J 0.2U 14J 1900J 1U 1.1U 130 2.2U NA 59J 120J SEDIMENT SEDIMENT SEDIMENT SAMPLE SAMPLE SAMPLE GP-009-SD GP-109-SD GP-010-SD 12000 11000 9900 6.5UJ 6.2UJ 4.5UJ 22 19 3U 190J 160J 100J 2U 2U 2U 3UJ 2.8J 0.33UJ 270J 2700J 1800J 48J 23J 21J 20UJ 20UJ 9UJ 100J 130J 15.J 150000 70000 18000 330 250 16 2000J 2000J 1900J 970J 650J 450J 0.3U 0.2U 0.09U 33J 35.J 7.6J 1200J 1200J 1200J 1.2UJ 1.1UJ 0.83U 1.3U 1.2U 0.89U 120 130 80 2.5U 2.4U 1.7U NA NA NA 48J 52J 33J 530J 930J 64J I D I I I I I I I I I I I I I I I I I All samples were analyzed under the USEPA Contract Laboratory Program. Locations and descriptions of all samples collected from the surface water pathway are outlined in Tables 5 & 6 and shown in Figure 2. Fish tissue samples were not collected during the ESL The Weyerhauser Co. collects fish from the Roanoke River and Welch Creek for tissue analysis of 2,3,7,8-TCDD and 2,3,7,8-TCDF. The analytical data from this sampling is then submitted by Weyerhauser Co. to the Water Quality Section ofNCDEM on a quarterly basis (Ref 35). 5.4 Analytical Results Laboratory analytical data for the surface water pathway sediment samples collected during the ESI (GP-009-SD, GP-001-SD, GP-0IO-SD) indicate that an observed release of 2,3,7,8-TCDD (24J ppt), 2,3,7,8-TCDF (200 ppt), 1,2,3,7,8-PCDD (3.5 ppt), Total OCDD (18000 ppt), Total TCDF (380J ppt), 1,2,3,4,7,8-HxCDD (5.3 ppt), pentachlorophenol (19000 ppb), arsenic (22 ppm), and lead (330 ppm) has occurred to the Roanoke River from the former Georgia-Pacific facility (Tables 7, 8, 9; App.A). Surface water samples collected at these locations were free of chemical contaminants, however, dioxin analysis was not performed on surface water samples for the ESL A decreasing concentration trend for 2,3,7,8-TCDD and 2,3,7,8-TCDF is evident downstream of Weyerhauser PPE #2 (former discharge at Welch Creek)(Fig. 2). Estimated concentrations of 2,3,7,8-TCDD in sediment samples WC-005-SD, WC-004-SD, and WC-003-SD were detected at 23J ppt , l 7J ppt, and 2. IJ ppt respectively; 2,3, 7,8-TCDF was also detected in these samples at concentrations of 160 ppt, 89 ppt, and IO ppt respectively. Background concentrations of2,3,7,8-TCDD and 2,3,7,8-TCDF in sediment sample WC-008-SD, upstream of the Weyerhauser facility in the Roanoke River, were below the laboratory minimum quantitation limit. Background concentrations of2,3,7,8-TCDD and 2,3,7,8-TCDF in sediment sample WC-006- SD, upstream in Welch Creek, were 4.9J ppt and 39 ppt respectively (Table 8). 5.5 Conclusions An observed release of dioxins/furans, extractable organic, and purgeable organic compounds, has been documented in sediments of the fishery and wetlands of the Roanoke River. The surface water pathway includes 12 miles of wetland frontage. The Roanoke River has been closed to fish consumption due to elevated levels of dioxin/furan in the fish, however, fishing was observed along the bank of the river at the former Georgia-Pacific facility during the ESL The habitat of one State classified species of special concern was identified along the 15-mile site surface water pathway. There are no drinking water intakes located on the surface water pathway within the I S- mile site target distance limit. Although dioxins/furans have been released to Welch Creek upstream of the site, samples collected below this other source and above the Georgia-Pacific were used for background comparison with SWP samples collected at Georgia-Pacific. 22 I I I I I I I I I I I I I I I I I I I 6.0 6.1 SOIL EXPOSURE AND AIR PATHWAY Physical Conditions Access to the former Georgia-Pacific facility from Plywood Road is restricted by a gate, however, no property boundary fences were observed during the ESL A densely wooded area surrounds the site to the west, south, and east; the Roanoke River restricts access to the site from the . north. A residential neighborhood bounds the site to the east (Refs. 5; 12; Figs. 1; 4). A prior sampling event has shown that soils at the site have been impacted by elevated concentrations of pesticides/PCBs, metals, extractable organic compounds, and purgeable organic compounds (Ref. 15). At this time, no excavation or removal activities have taken place at the site (Ref. 12}. The site is primarily overgrown with tall grass and trees although some sections are exposed hard packed dirt and gravel or concrete covered (Refs. 5, p.5; 8; Photos). 6.2 Soil and Air Targets The facility is currently unoccupied and therefore no workers are on site (Ref. 12 ). There are no on-site residences, the nearest off-site residence is located approximately 800 feet east of the wood treatment area contaminant source ( Figs. 1; 4). The nearest school, Plymouth High School, is located approximately .27 mile south of the site. However, the school's baseball field is approximately 1000 feet south of the site source area. There are a total of 7002 residents living within 4 miles of the site (Ref. 6). A breakdown of the residential population per distance ring is listed below: Distance Ring Residential Pop. >0-1/4 mi. 92 >1/4-1/2 478 > 1/2 - 1 1357 >1-2 2603 >2 - 3 1354 >3 - 4 1118 Total 7002 There are two State classified significantly rare animal species habitats within the 4-mile site radius; the closest is approximately 1 mile north of the site. A total of 8000 acres of wetlands have been identified within 4-miles of the site. The nearest wetland, Huff island in the Roanoke River, is located approximately 500 feet north of the former Georgia-Pacific facility (Ref. 34; Fig. 1). 6.3 Sample Locations Because the nearest residence is located approximately 800 feet east of the wood treatment area, no residential soil samples were collected during the ESI. Soil samples were collected from four locations within the area around the former dip tank/treated wood stacking area. A fifth soil sample was collected in the ditch that receives runoff from the eastern portion of the site. 23 I I I I I I I I I I I I I I I D I I I An associated background soil sample was collected from an off-site location on the adjacent property owned by the Boy Scouts of America (Refs. 12; 36; Fig. 3). Discrete soil samples were collected at each sampling location. Samples were collected from a range of depths between 3 inches and 2 feet bis. All samples were submitted to a CLP-certified laboratory for dioxin/furan, pesticide/PCB, metals, extractable organic compound, and purgeable organic compound analyses (Ref. 12; App. A). 6.4 Analytical Results Laboratory analytical data for the four ( 4) soil samples collected from the former wood treatment area at the site during the ESI indicate that an observed release of aroclor-1254, alpha- BHC, delta-BHC, lindane, alpha-chlordane, arsenic, chromium, copper, iron, lead, magnesium, mercury, nickel, sodium, zinc, pentachlorophenol, 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2,4,5-trichlorophenol, flouranthene, pyrene, chrysene, TCDD, PCDD, HCDD, HpCDF, OCDD, TCDF, PCDF, HCDF, HpCDF, and OCDF has occurred. The reported concentrations of alpha- BHC, lindane, aroclor-1254, pentachlorophenol, arsenic, and all detected dioxin/furan isomers were greater than applicable health based benchmarks (Tables 2, 3, 4; App. A). Laboratory analytical data for the soil sample collected in the drainage ditch (GP-002-SL) indicate that contaminant migration from the source area has taken place. An observed release of alpha-BHC, delta-BHC, lindane, arsenic, barium, lead, manganese, zinc, TCDD, PCDD, HCDD, HpCDF, OCDD, HCDF, HpCDF, and OCDF has occurred. The reported concentrations of arsenic, and all detected dioxin/furan isomers, except OCDF, were greater than applicable health based benchmarks (Tables 2, 3, 4; App. A). Due to a laboratory error, extractable and purgeable organic compound analysis was not performed on soil sample GP-006-SL (App. A). Pentachlorophenol was detected in the background soil sample (GP-003-SL) at a concentration of24000 ppb (Table 2; App. A). The source of PCP contamination at the background location is unknown. 6.5 Conclusions There are no on-site residents, the nearest off-site residence is located approximately 800 feet east of the wood treatment area contaminant source. There are a total of 7002 residents living within 4 miles of the site. There are two State-classified significantly rare animal species habitats within the 4-mile site radius; the closest is approximately 1 mile north of the site. Five (5) on-site surficial soil samples and one (I) off-site background surficial soil sample were collected during the ESL Surficial soils around the area of the dip vat and in the drainage ditch exhibited levels of dioxin/furan, pesticide/PCB, metals, and extractable organic compounds above health based benchmarks. As a result, the site poses a soil exposure hazard and threat to human health. 7.0 SUMMARY AND CONCLUSIONS The former Georgia-Pacific Corporation Hardwood Sawmill site was assessed to identify sources of possible contaminant migration at the site, and potentially impacted populations and sensitive environments. 24 I I I I I I I I I I I I I I I I I I I Prior sampling and analytical data has shown that as a result of practices associated with the treating oflumber at the site, groundwater in the shallow aquifer and surficial soils in the vicinity of the dip vat/ treated wood stacking area had been impacted by a release of pesticide/PCB; metals, purgeable organic, and extractable organic compounds. In December 1985, a Preliminary Assessment was conducted by the North Carolina Solid and Hazardous Waste Management Branch/CERCLA Unit. No sampling was conducted during this assessment, however, it did specify that a site inspection should be conducted. A fish consumption advisory for the Roanoke River was issued in 1988 by the NC Division of Marine Fisheries and the Wildlife Resources Commission following a state wide dioxin study conducted by the NC Division of Environmental Management. The advisory, extending from Williamston, NC to the Albemarle Sound, was based on fish tissue samples collected by Weyerhauser Co. that exhibited high dioxin/furan concentrations. In August 1990, a Phase I Screening Site Inspection was completed by NUS Corp, in September 1991, Greenhorne & O'Mara Inc. completed a Phase II Screening Site Inspection , and in April 1994, DYNAMAC Corp. completed a SIP of the site. On June 19-20, 1995, an ESI was conducted at the site by the NC Superfund Section. On-site surficial soil samples were collected to determine areas of residual contamination remaining at the site from the former wood treatment process and other facility operations. Off-site samples were collected from the surface water pathway to determine the extent of contaminant migration from the source area. No groundwater samples were collected during the ESI due to the depth of the primary drinking water aquifer and the lack of nearby drinking water wells. All samples were submitted for analyses under the USEPA Contract Laboratory Program. ESI sampling results indicated the presence of aroclor-1254, alpha-BHC, delta-BHC, lindane, alpha-chlordane, arsenic, chromium, copper, iron, lead, magnesium, mercury, nickel, sodium, zinc, pentachlorophenol, 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2,4,5-trichlorophenol, flouranthene, pyrene, chrysene, TCDD, PCDD, HCDD, HpCDF, OCDD, TCDF, PCDF, HCDF, HpCDF, and OCDF in surficial soils around the area of the dip vat at levels significantly above background. Elevated levels of many of these compounds were detected in the drainage ditch that carries site run-off to the Roanoke River. The nearest resident, as measured from the former wood treatment source area, is approximately 800 feet east. The nearest drinking water production well is approximately 1.25 miles south. An observed release of many of the same dioxins/furans, extractable organic, and purgeable organic compounds, attributable to the former Georgia-Pacific facility, has been documented in sediments of the Roanoke River. The Roanoke River is a closed fishery although fishing still occurs from the river bank at the site. Since this area is also a wetland, the release documents an impact to both a fishery and a sensitive environment. The City of Plymouth municipal wells tap the Castle Hayne Aquifer, the primary drinking water aquifer in the area. Post- treatment drinking water samples collected from the city's system in 1993, 1994, and 1995 were free of chemical contaminants. Based on the information currently available, the Georgia-Pacific Hardwood Sawmill site poses a potential threat to human health and the environment and is therefore recommended for further remedial action under CERCLA/SARA. 25 I I I I I I I I I I I I I I I I I I I I. 2. 3. 4. 6. 7. 8. 9. 10. II. _ 12. 13. REFERENCE LIST Georgia-Pacific Corp. Hardwood Sawmill NCD 000.813 592 U.S. Geological Survey. 7.5 Minute Series Topographic Maps, Scale 1:24,000; Plymouth East, NC, 1987; Plymouth West, NC, 1974; Westover, NC, 1978; Woodard, NC, 1979. Rumford, G. Doug (N.C. Superfund Section), 1995. Latitude and Longitude Calculation Worksheet, Georgia-Pacific Corp. Hardwood Sawmill-Plymouth Site. March 15, 1995.------'-·-·--.. U.S. Department of Commerce, 1961, Te~_hn{cal Paper No. 40: Rainfall Frequency Atlas of the United States. Issued 1961. · ' · · i · . 1· I . . -·· U.S. Department of Commerce, Climatic. Atlas of the United States: National Climatic Center, Asheville, NC, 1979. · · · Rumford, G. Doug, 1994. Field Log Notes, August 22, 1994; SIP Reconnaissance, · Weyerhauser Co. -Plymouth Site. N.C. State Center for Geographic Information and Analysis, Populations and Households; Population per Distance Ring: Georgia-Pacific Corp. Hardwood Sawmill-Plymouth Site, March 25, 1995. . ; .•. , •-·-· ,...,...,, .. .,.._ .... ,., .~ .......... ,,..,., ., .... ,,,.,.,·~-;.-, ., i .. , •. _ ' Wood, Fred. NCDHS: RCRA Inspection Repo_rt, Georgia-Pacific Corp Hardwood Sawmill- Plymouth Facility. October 22, 1981. Stevens, Tom B., Georgia-Pacific Corp.: teller to Lee Crosby, NCDHS; ERRIS Listing Site Information-Plymouth Hardwood Sawmill. January 28, 1985. · · • .. .. •·· .. , , Mersereau, H.S., Georgia-Pacific Corp,; Hazarct.ous Waste PermitApplication (Forms3510. l.., ., ••-~- & 3510-3) for Georgia-Pacific Corp. Hardwood Sawmill-Plymouth, NC. November 12,. 1980. ' . Strickland, O.W., NCDHS: RCRA »'aste:Ge~erator Classification Change for Georgia- Pacific Corp. Facility I.D. NCD 000 813 592-Plymouth, NC. August 11, 19~2 .. .\ NCDEHNR, 1995. North Carolina Hazardous.Waste Management Rules and Solid Waste - . -~ i Management Law. January 1, 1995. · . ..., .......... ,. ... ~ .. ,--... ,,~.s~---""''''·•~•-:· r,·,·:J ,;·1: ·"· ;;.J.,.,' ·t:: ... ): Rumford, G. Doug, 1995. Field Log Notes, Ju·ne 19-20, 1995; ESI Sampling Event, Georgia- Pacific Corp. Hardwood Sawmill-Plymouth & SIP Sampling Event, Weyerhauser Co. - Plymouth Site. . ; ... '~~· ),·, . ... ~,' Nicholson, Grover, NCDHS; Site Inspection Report Form: Potential Hazardous Waste Site. . Georgia-Pacific Corp. Hardwood Sawmill-Plymouth, NC. December.6, 1985 .• _._,, .. ,.,., .. _"" .. "'~"''·..,.,·, • ;t ,; : '. \1'i'; ·--~;._•·. :" ... -)/·1.; _ .. -'·:.~/\}~: _•:.~-~/). · .. :\;.)} J .' .'::· • 1·-._· •. •· I I I I. I I I I I I I I I I I I I I I 14. 15. 16. 17. 18. -· 19. . --:~20~ 21. 22. 23. 24. i' .... 25. · . .,. .,,,· .. REFERENCE LIST . .. . ' . Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 McAdams, Louis T., NUS Corp.; Screening Site Inspection, Phase I: Georgia-Pacific Corp. Hardwood Sawmill-Plymouth, NC. August 20, 1990. · ·--·· · ···· ----· Greenhorne & O'Mara, Inc.; Screening Site Inspection, Phase I: Georgia-Pacific Corp. Hardwood Sawmill-Plymouth , NC. Submitted to NCDEHNR-Superfund Section. September 1991, Revised February 1992. · Rumford, G. Doug, 1995. Memo to•File; Teleph_one Conversation with Mark Wassersug, Georgia-Pacific Corp.: Plymouth, NC Hardwood Sawmill History. October 31, 1996. _ . -...... .:..~ .. , .·,.•;,_ ... :-.,,.-... •·,:.'······· ... u.,:-.~.,...:.:.~ ·. • ... : • ·'' >• ',"'···. Heath, Ralph C. 1984. Ground-Water Regions of the United States: U.S. Geological Survey. Water-Supply Paper 2242. Heath, Ralph C. 1980. Basic Elements of Groundwater Hydrology with Reference to Conditions in North Carolina: U.S.G.S Water Resources Investigations Open-File Report 80- 44. 1980. ' ,. ·•· N.C. Geological Survey. Geologic Map o_f 1'/orth Carolina 1 :500,000 scale: .. 1985-·1 "'"~·• .. , ..... ,. ~: ·, >, U.S. Department of Agriculture,. -1989. · Soil Conservation Service; Soil Survey of Washington County, NC, September 1989. . ... '.:··(1',, . -.· i· '·· -!-. -· _:•-~--., . ~ . .· Brown, Philip M., 1959. U.S. Dept. of the Interior, Geological Survey. Bulletin Number 73; Geology and Groundwater Resources in the Greenville Area, North Carolina. 1959.- . • ••••"' ,, :.,~::,,: •,:,,,.,,:_,, .,;:-.,:;.,.._Mo .r.;-.: • .... ~_:•,~ Giese, G.L. 1991. Simulation of Ground-Water Flow in the Coastal Plain Aquifer System of North Carolina: U.S.G.S OpencFile Report 90-372. 1991. Nelson, Perry F., 1964. NC Dept. of Water Resources. Bulletin Number 4; Geology and Groundwater Resources in the Swanquarter Area, North Carolina. 1964. ·· . _,,.,, ,., N.C. Geological Survey. National Water Summary 1984: Water Supply Paper 2~75. ''.. ,· .. ' ;::~:-t,-=- Rumford, G. Doug, 1995. Memo to File; Telephone Conversation with Harold McCarson; Extent of Plymouth City Water System. Plymouth, NC. June 12, 1995. . . . . ' . ' " ., I I I I I I I I ii 11 .. ~- r1 I I I I I I 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. REFERENCE LIST Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 Stanley, Jeanette. (NC Superfund Section) Interoffice Memo; Update on Status of Wellhead Protection Programs in N.C., August 15, 1996. Rumford, G. Doug, 1995. Memo to File; Groundwater Population Estimates within 4 Miles of the Site: Georgia-Pacific Corp. Hardwood Sawmill -Plymouth Site. October 11, 1996. Mccarson, Harold F., HydroLogic Inc., _Inorganic and Organic Chemical Analysis for Plymouth City Water Supply. Plymouth, NC. May 11, 1995 Rumford, G. Doug, 1995. Memo to File; Surface Water Pathway Flow Rate Calculations: Weyerhauser Co.-Plymouth Site, June 26, 1995. McAdams, Louis 1995. NUS Corp.: Extent of Water Service in Plymouth Area; Georgia- Pacific Hardwood Sawmill Site. July 19, 1990. N.C. Department of Environment, Health, and Natural Resources: Classifications and Water Quality Standards Assigned to the Waters of the Roanoke River Basin, February I, 1993. N.C. Wildlife Resources Commission. North Carolina Inland Fishing, Hunting & Trapping Regulations Digest. July I, 1994 . N. C. Division of Environmental Management-Water Quality Section: Fish Tissue Dioxin Levels in North Carolina-1990 Update. Rumford, G. Doug, 1993. Memo to File; Wetlands and Critical Habitats Identification: Weyerhauser Co.-Lewiston Site, June 26, 1995. Woock, Stephen E., Weyerhaueser Co. : Dioxin Analysis of Fish per NPDES Permit No. 0000680 for Fall 1993. March 16, 1994. Rumford, G. Doug, 1996. Memo to File; Ownership of Adjacent Property: Georgia- Pacific Hardwood Sawmill Site, Plymouth,-NC. October 11, 1996. · · Rumford, G. Doug, 1995. Memo to File; Telephone Conversation with Mike Beachum, Outerbanks Contractors: Georgia-Pacific.Hardwood Sawmill Site. June 2,' 1995. · · · I 1' •• • •, I • J • ' I I I I I I I I I I I I I I I I I 38. 39. 40. 41. 42. 43. REFERENCE LIST Georgia-Pacific Corp. Hardwood Sawmill NCD 000 813 592 U.S. Environmental Protection Agency: Hazard Ranking System Superfund Chemical Data Matrix; Appendix B. August 19, 1996. N.C. Department of Environment, Health, and Natural Resources-Superfund Section Inactive Hazardous Site Branch: Guidelines for Responsible Party Voluntary Site Remedial Action. October 1996. Crittenden, Russ, Dynamac Corp.: Site Inspection Prioritization Report, Georgia-Pacific Corp. Hardwood Sawmill, Plymouth, NC. April 15, 1994. Rumford, G. Doug, N.C. Superfund Section: Site Inspection Prioritization Report, Weyerhauser Co., Plymouth, NC Site. June 1996. Rumford, G. Doug, 1997. Memo to File; Telephone Conversation with Doward Jones Jr.: Boy Scouts of America Property Information, Plymouth, NC. January 3, 1997. NCDEHNR, 1993.Report No. 93-02: Heavy Metals in Organic-Rich Muds of the Albemarle Sound Estuarine System. January 1993. · I I I I I I I I I I I I I I I I I I I References 2 through 43 appear in Volume II I I I I I I I I I I I I I I I I Photo Number I - 4 5 6 7 8 9 10 II 12-13 14 15 16 17-20 PHOTO LOG Georgia-Pacific Corp. Hardwood Sawmill Plymouth, Washington County, NC NCD 000 813 592 ESI Sampling Event: June 19-20, 1995 Description East to west panoramic view of site looking south Upstream view of Roanoke River from pier at site Pier on Roanoke River at site Downstream view of Roanoke River from pier at site Concrete pads near dip vat/stacking area Western view of site -former facility office building Sediment/surface water sample location GP-009-SD/SW Sediment/surface water sample location GP-010-SD/SW Downstream view of Roanoke River from sample location GP-0 I 0-SD/SW -City of Plymouth pump station at end of Roanoke Ave. Soil sample GP-004-SL location near concrete pad at dip vat--_ area Soil sample GP-002-SL location at ditch along concrete pad Background soil sample GP-003-SL location at Boy Scouts of America property adjacent to site Northern panoramic view of Plywood Drive, entrance to site, and Boy Scouts of America property • "76 - "75----- 7'!() 000 "i 3 "ll 35<52'30" L _____ _ 76°52'30' "68 50' k'hree Sisters fmk f- -+ ''66 L------;- 47'30" ' I 1- _,__ I I I i Creelc Cr,uilt. L I ' I , I __ j ' ' I I I I 1,, I ' ---1 ,,, ' ' \ ----_____ ,.__ ----------- \ ---------+-- ' \ I j " ISi/t..NO I Georgia-Pacifi,; Coip. Hardwood Sawmill NCIJ 000 813 592 I 'i, 2 ' ' I I ' I I ., I , i y ,/ -Terrdpin Poin: -~-~~;~, , 3 I ' I , I ' I I .~i•S.'<Sl..E Aia'0Qnf p + H I L 4 \ y L I I /1 / ' I l ' I ' I I I / /ff :> Sou,. a Ch I I \ ~Li~hthouse(Cl \ H \,- \-- \ I oSnaa J5 . <12 L •lig.,t n I I I ' I I I ' ' I I ., I ·17", I ! _/ I -, f )- / I I I I I I I E I I I /VI / ' i ,' ,' ) I, SWAN +- " ' ' ' ,- 1 F --+ I + ---1 I ,-; I , -- .. ---- BAY A B C D \"- s {1 0 s M I L --·--.... , .,,_,. '-,~~?t"' 7 I Plymouth Water Distribution Washington County Distribution Nearest Residence Nearest Residential Well Plymouth High School Plymouth Municipal Well Field N D .-,o L 1,, t Mt Dclane Ch l I . I ' ( ~; •.u,~_ -,_•J-Ce,-., , :::..J.,, " • -· I I. • '11 WFSTOVCR, ~ o:C5?.?-'.'.'7td/. 1g54 f':-1 01 Ofl[VISL f) AMS ~55~ I NW -SERI '"82 I I, ,-"" a, ' ,: --lrq ' ,,, ,() _, " z " x,..c .. , ' r,;~ z " CL " ,, z . , _f· -__ .- llt ' •;,-" '7;:", __ t;-'P-. ; e .-,, .;'I( ' ' ., ~---- Ms p I & ' ◄■Rli1. GIS, Inc. ( ;__-~ P.0 BO• ... ~AY, Ot.C. ...OTOOftAF><Y !I.OH· rEII.,-19§1 f'f!OJ!CT !II 9'0'f . ' ' '',' ,-!,. : ORTHOPHOTO MAP S.ECT1pt-.1 Of, ~~ANGTON COUNTY, NOij fH Ct\µ80,..,..L,1/~fil,CIA..__ ___________ _ E 2.668.000 ,, \ Tow\i !IF,--{t_y~OUTH ~ \6910 \ MATCH MAP 6767 .12 E 2.669.000 " Mop Compiled By S1erecv,ologrommetric Methods lf1 Accordance With "kltionol Mop Ace~)' SICl'ldords E 2,670,000 E 2.670.000 Gnd Bos.ed On North Carolina Sire Plane Coord,nate System 1983 North American Datum ..... -,~-T""----------------------··------- z PROPERTY MAP OF WASHINGTON COUNTY NORTH CAROLINA SUBDIVISION INDEX LEGEND STATE LINE UTILITY EASEMEr-lT ==•"O••·•O,LJ< •• C:: >OoC:,>->•== COIJNTY LINE ----- TOINSHIP LINE---------- CITY LINE SECONDARY ROAD ROAD R/W RAILROAD R/W SR 1500 us 70 CONRAH PROPERTY LINE ~ PARCEL HOOK ORIGINAL '°' '° ;5 STREAMS 0-R SHORELINE ~---./ BLOCK 1;UMBER tJ ORIGINAL '°' LINE ----PARCEL IOENTlflER (LAST 4 OIGITSI INTERSTATE HIGHWAY 8 COMPUTED ACREAGE (R/W EXCLUOHtl U.S. HIGHWAY 0 DEED AGREAGE 'c. STAT[ HIGHWAY 0 SCALED DIMENSION SUBDl\'ISION TRIAr'IGLE ft. DEED Ollo!ENSION PROPERTY CORNER t/GRID COORDINATES -----r-- OIMENSIONS ARE IN FEET THl5 HP 15 Pa[HRED FOR THE •NVENTORY OF •Ell PROPERTY FOUND IIJHIH THIS JURISOICTION AKD IS COIPILED rROM RECORDED DEEDS ?LAT$ AHO OTHER PUBLlC RECORDS ONO 0'1A. USERS OF THIS UP ARE HERc~Y •OllrlED THAT THE AFORE•EH'10HEO PUBLIC PRIURT INfOR~AllON SOURCES SHOULD 6E CONSULTEO F"OR V[R!F",CATION OF T~E INFO•■OllON CONHINEO ON Hl5 MAP THE COUNTY AND MAPPING CONPJHY ASSUME NO LEGAL RESPONSIBIL<H fDR me INFORMATION CONTAlkED Oh '"'S .... GRfD IS BHEO ON 1"[ NORTH COROLIHJ STJTE PLAN[ COOROIN•'c SYSTEM 1963 NORTH AMERICAN DATUI CARY_ NORTH CAROLINA 6397 ( 12.31AJ 12.1 IA (56) 156.15 go I-----. I'-DATE " . z MAP REV. 6768 6778.13 6768.20 6778.17 6767.07 6767.08 6777.05 SCALE: INCH = I 00 FEET MAP NO. 676820 OF WASHINGTON COUNTY 0 0 E9 ~ z DATE " '" JUNE 7, 1993 "' NORTH CAROLINA SUBDIVISION INDEX Fig. 4 Washington County Orthophoro. Property Map Georgia-Pacific Corp. Hardwood Sawmill Plymouth, Washington County, NC NCD 000 813 592 Sample Locations A GP-009-SD/SW B GP-001-SD/SW C GP-010-SD/SW D GP-002-SL E GP-006-SL F GP--007-SL G GP-004-SL H GP--005-SL I GP-003-SL LEGEND STATE LINE ·----· UTILliY EASEMENT ==>•o>•[rne::,:,.,HEDJ:• <-••=== COUNTY LINE TOWNSHIP LINE CITY LINE -- - SECO~JARY ROAD ROAD R/ljj RAILROAD R/1 SR 1500 us 70 PROPERTY LINE • ORIGINAL LOT NO. ORIGINAL LOT LINE PARCEL HOOK STREA~S OR SHORELINE ~,__./ BLOCt. NUMBER PARCEL IDENTIFIER \LAST 4 OIGITS) 6397 INTERSTATE HIGHWAY COMPUTED ACREAGE (R/it' EXCLUDED) (12.31A) US. HIGHWAY 8 N.C. STATE HIGHWAY <9> SUBDIVISION TRIANGLE A DEED ACREAGE SCAL~D DIMENSION DEED DIMENSION PROPERTY CORNER W/GRID COORDINATES -----r-- DIMENSIONS ARE IN FEET !Hl5 UP IS PSEPAREO FOR IH£ INHNIORT OF REAL P•OPcRTY FOUND "lHIN THIS JURISOICTION IND IS CO .. ILEO FRON RHORDED D£HS. NAlS uo ornER PUBLIC RHOROS """ OAlA USERS OF lttlS NAP AR[ HEOEBY •ollFFED IHAl me AFOREMENTIONED PUBUG PRIUR, INFORUllON SOUHE5 5~0ULO BE C1N5VLTEO FOR VfRlflCATION OF lHt: IHFORUIIDN CONTAINED ON THIS UP, lHE COUNTl ANO NAPPmi; CO~PAHl ,ssu•E MO L!:GAl REWO•SIBILIIY FOR THE IHFDRU110N CONTAINED OH J~•S UP GRID 13 BASED ON rnE NORrn CAaouN• $1AH PLAHC COORDINATE srsn• ·~~l NORTH U[R>COH OUUN, CARY NORTH CAROLINA 6768 6768.20 6778.17 676707 6767.08 6777.05 6767.11 6767.12 6777.09 SCALE, INCH = 100 FEET MAP NO. 6767.08 SCAL_E-!' 100• MAP NO 6767.08 12.1 IA (561 156.15