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HomeMy WebLinkAboutNCD986232379_19980930_Greshams Lake Industrial Park_SERB ESI_Expanded Site Inspection Report-OCR\ 1 I ~ ~ l.l.,...,~,.._,, • ~--ll If· \ 11 ,. i ' ' -:..•-- NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WASTE MANAGEMENT September 30, 1998 Mr. Phil Vorsatz NC Site Management Section Chief EPA Region IV Waste Division I 00 Alabama Street, 11th Floor Atlanta, Georgia 30303 RE: Expanded Site Inspection Report Greshams Lake Industrial Park site, NCO 986 232 379 Raleigh, Wake County, North Carolina Dear Mr. Vorsatz: Enclosed herewith is the Expanded Site Inspection (ES!) Report by the North Carolina Superfund Section for Greshams La'.'.e Industrial Park site, NCO 986 232 379, Raleigh, Wake County, NC. The Gresh=s Lake Industrial Park site is located on the outskirts of northeastern Raleigh, NC. The term "site" refers to ABLE Manufacturing Company and industries near ABLE that have wells contaminated with chlorinated hydrocarbons. Most of the previous investigations have centered on the ABLE property al 3220 Northside Drive. Extensive groundwater monitoring within the area has shown the presence of several chlorinated hydrocarbons including cis-1,2-dichloroethene, trichloroethene, and vinyl chloride. There are a number of private and conununity wells within a 4-mile radius of the site. The closest drinking water well is on the ABLE Manufacturing property. Several of the industries within the Greshams Lake Industrial Park area, including ABLE Manufacturing, were advised by the NC Occupational and Environmental Epidemiology Section not to consume and/or bath for long periods of time in the water. Because of the number of drinking water wells that are contaminated with chlorinated hydrocarbons and the number of employees they served, and the potential for migration of the plume(s), the NC Superfund Section recommends Greshams Lake Industrial Park site for further federal action under CERCLA. lfyou have any questions, please contact me at (919) 733-2801 ext. 316. enclosure Sincerely, K-un n0.Li,1ut K, ~w ~phanie K. GrubM . Hydrogeologist Special Remediation Branch NC Superfund Section 401 OBERLIN AOAO, SUITE 150, RALEIGH, NC 27605 PHONE 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 E-.:panded Site J11.1pection ,, Greslrnms Lake Industrial Park NCD 986 232 379 Raleigh, Wake County, North Carolina Reference No. 061 I 7 September I 998 S11perfi111d Section Division of Waste Management Nor//, Carolina Department o{ E111•iron111enl and Natural Resources Prepared hy: ,'} , , /~/1 (IJ1 jj K ~,h/Q<J) l:tepl11111ie K. Gnhhs Hydrogeologist Bruce Nicholson, Bmnc/, Head ,\11ecial Re111cdiation l!mnch I I I I I I I I I I I I I I I I I I I TABLE OF CONTENTS EXECUTIVE SUMMARY 1.0 INTRODUCTION ................................................ I 2.0 SITE DESCRIPTION ............................................. I 2.1 2.2 2.3 2.4 Location ................................................... I Site Description ............................................. I Operational History and Waste Characteristics ..................... I Regulatory History and Previous Investigations .................... 4 3.0 WASTE/SOURCE SAMPLING .................................... 13 3.1 Sample Locations ........................................... 13 3 .2 Analytical Results .......................................... I 3 3 .3 Conclusions ............................................... 13 4.0 GROUNDWATER PATHWAY .................................... 13 4.1 Hydrogeology ............................................. 13 4.2 Groundwater Targets ........................................ 17 4.3 Sample Locations ........................................... 18 4.4 Analytical Results .......................................... 19 4.5 Conclusions ............................................... 19 5.0 SURFACE WATER PATHWAY ................................... 20 5.1 Hydrologic Setting. . . . ...................................... 20 5.2 Surface Water Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.3 Sample Locations ........................................... 22 5.5 Conclusions ............................................... 22 6.0 SOILEXPOSUREANDAIRPATHWAY ........................... 22 6.1 Physical Conditions ......................................... 22 6.2 Soil and Air Targets ........................................ 22 6.3 Soil Sample Location ....................................... 23 6.4 Soil Exposure Pathway Conclusions ............................ 24 7.0 SUMMARY AND CONCLUSIONS ................................ 24 PHOTOGRAPHS APPENDIX A-1990 and 1991 DEM/Superfund Investigation APPENDIX B-1991 Trigon Engineering Investigation APPENDIX C-1992 DEM Investigation APPENDIX D-1996 Superfund PA/SI Investigation APPENDIX E-1998 Superfund ES! Investigation REFERENCES I I I I I I I I I I I I I I I I I I I TABLE I: TABLE 2: TABLE 3: TABLE 4: TABLE 5: TABLE 6: LIST OF TABLES Summary of the Analytical Data Collected by Trigon Engineering Consultants on July 22, 1991 ..................................................... 5 Summary of the Groundwater Data Collected by the DEM during the 1992 Investigation ...................................................... 9 Summary of the Significant Analytical results collected during the Combined PA/SI on June 11, 1996 by the NC Superfund Section ..................... 9 Summary of the Groundwater, Sediment, and Soil Samples Collected during the ES! in April 1998 ................................................. 14 Population Currently Using Groundwater as a Source of Potable Water within 4-miles of the Greshams Lake Industrial Park Site ....................... 18 Population Estimate within 4-miles of the Site .......................... 23 I I I I I I I I I I I I I I I I I I I LIST OF FIGURES FIGURE 1. Four-mile radius topographic and sensitive environments map .............. 2 FIGURE 2: Site Layout Map of the Greshams Lake Industrial Park .................... 3 FIGURE 3. Sample Location Map showing Monitoring Wells and Soil Sample Locations during the 1991 Trigon Engineering investigation ........................ 6 FIGURE 4. 1992 Division of Environmental Management Sampling Locations ........... 7 FIGURE 5. 11996 NC Superfund Section PA/SI Sampling Location .................. 12 FIGURE 6. 1998 NC Superfund Section ESI Sampling Location Map ................. 16 FIGURE 7. 15-Milc Surface Water Pathway Map ................................. 21 I I I I I I I I I I I I I I I I I I I EXECUTIVE SUMMARY The Greshams Lake Industrial Park site, NCO 986 232 379, is located on the outskirts of northeastern Raleigh, Wake County, North Carolina. The area consists of several industrial properties within the park. The term "site" refers to ABLE Manufacturing Company and industries near ABLE that have drinking water wells contaminated with chlorinated hydrocarbons. Most of the investigations have centered on the ABLE property at 3220 Northside Drive. The "site" properties included ABLE Manufacturing, the former Halliburton Industries, Billings and Garrett Utility Contractors, and REA Construction Company. Several investigations of the Greshams Lake Industrial Park have been centered on ABLE Manufacturing, and there is a considerable amount of data available. The property consists of a 1.8 acre tract of land which gently slopes to the south toward Greshams Lake. The immediate vicinity is industrial, but within 0.50 mile, residential properties exist. Groundwater wells that were previously used for drinking are currently only used for supply purposes. The industries and residences within the area have the option of being connected to the Raleigh municipal water supply. The closest drinking water well is located in front of the ABLE building, near Northside Drive. ABLE Manufacturing Company operated a metal fabricating facility from 1989 until 1993, when the company closed. From the late 1970s until 1989, the property was owned by South State Engineering, a tool and dye manufacturer. When ABLE purchased the property, South State removed a large pile of metal turnings that had accumulated behind the plant building. Presently, scraps of metal and tunings are still visible in the location of the former pile. Extensive groundwater investigations have been conducted at the ABLE property, as well as the other surrounding facilities. These investigations were conducted by various divisions within the NC Department of Environment and Natural Resources (NCDENR) and the NC Department of Health and Human Services (NCDHHS). They have shown chlorinated solvent contamination throughout a wide area of the industrial park including in the ABLE drinking water well which was subsequently closed. These investigations, however, have been unable to prove ABLE as the sole source for the chlorinated hydrocarbon contamination. On June 11, 1996, the NC Superfund Section conducted a combined Preliminary Assessment and Site Inspection (PA/SI) at Grcshams Lake Industrial Park. Wells downgradient were sampled as well as several locations along the surface water pathway. Two drinking water wells were impacted with chlorinated hydrocarbons, including the well at the former Halliburton facility and the well at Charlie Brown's Catering. The drinking water well at Billings and Garrett contained methyl-I-butyl ether. The analytical data indicated that the surface water pathway contained no constituents attributable to the site above detection limits. Areas of surface soil contamination with bis(2-ethylhexyl)phthalate had been identified on the ABLE property, but the concentration was below health-based benchmarks. The site was recommended for an Expanded Site Investigation. On April 27-29, 1998, the NC Superfund Section conducted an Expanded Site Inspection at the Greshams Lake Industrial Park. Chlorinated hydrocarbons were detected in the drinking water well at ABLE and within several monitoring wells surrounding the facility. During the ES!, the I I I I I I I I I I I I I I I I I I I former ABLE drinking water well was re-sampled and the presence of vinyl chloride that had previously been detected in 1992 was confirmed. The surface water pathway was not sampled during the ESI, due to the fact that no attributable contaminants were detected during the PA/SI. The septic tanks at ABLE and the former Halliburton facility were sampled as potential sources. The ABLE tank contained estimated values of 1,1-dichloroethane, benzene, toluene, chlorobenzcne, (methylethyl)benzene, and trimethylbenzene. The tank at the former Halliburton facility found levels of toluene, chlorobenzene, (3-4)methylphenol and an estimated value of(methylethyl)benzcne. Soil samples were also collected from potential source areas, the former turnings pile area and the loading dock area. No contaminants were detected above health-based benchmarks. Because of the number of drinking water wells that are contaminated with chlorinated hydrocarbons and the number of employees they served, and the potential for migration of the plume(s), the NC Superfund Section recommends Greshams Lake Industrial Park site for further federal action under CERCLA. I I I I I I I I I I I I I I I I I I ~ 1.0 INTRODUCTION Under the authority of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), the Superfund Amendments and Reauthorization Act of 1986 (SARA), and a cooperative agreement with the United States Environmental Protection Agency (US EPA), Waste Management Division, Region IV, the North Carolina Superfund Section conducted an Expanded Site Inspection (ES!) at the Greshams Lake Industrial Park site in Raleigh, Wake County, North Carolina. The purpose of the ES! was to obtain the data necessary to assess the threat posed by the site to human health and the environment and to complete a Hazard Ranking System (HRS) score for the site to determine the need for further action under CERCLA/SARA or other authority. This investigation included reviewing existing files and sample data, conducting soil, groundwater, and potential source sampling under EPA Contract Laboratory Program (CLP) protocol, and collecting additional data needed to document HRS factors. 2.0 2.1 SITE DESCRIPTION Location The Greshams Lake Industrial Park site, NCO 986 232 379, is located on the outskirts of northeastern Raleigh, Wake County, North Carolina. The area consists of several industrial properties within the park. The term "site" refers to ABLE Manufacturing Company and industries near ABLE that have drinking water wells contaminated with chlorinated hydrocarbons. (Figure I, Reference 3). Most of the investigations have centered on the ABLE property at 3220 Northside Drive. The site coordinates are 35° 52' 59" north latitude and 78° 34' 54" west longitude, based on the northeast corner of the ABLE Manufacturing building (Reference 4). The "site" properties included ABLE Manufacturing, the former Halliburton Industries, Billings and Garrett Utility Contractors, and REA Construction Company (Figure 2, Reference 3). 2.2 Site Description Since several investigations of the Greshams Lake Industrial Park have been centered on ABLE Manufacturing, there is a considerable amount of data available on the ABLE property. The property consists of a 1.8 acre tract of land which gently slopes to the south toward Greshams Lake (Reference 3). The immediate vicinity is industrial but within 0.25 mile, residential properties exist. Bedrock outcrops of mica gneiss are visible on site. Groundwater wells that were previously used for drinking are currently only used for supply purposes. The industries and residences within the area have the option of being connected to the Raleigh municipal water supply (Reference 5). A drinking water well is located in front of the building near Northside Drive (Reference 6, Photographs). During a site reconnaissance on October 31, 1995, Superfund personnel observed a large manufacturing building with loading docks, several drums which have appeared to have leaked, a dumpster, and two empty truck trailers (Reference 7). Currently, no drums or dumpsters are on site but the two empty truck trailers are still at ABLE (Photographs). The loading dock area is stained and the concrete in some areas is corroded (Reference 6). 2.3 Operational History and Waste Characteristics ABLE Manufacturing Company operated a metal fabricating facility from I 989 until 1993, when the company closed. From the late 1970s until 1989, the property was owned by l,<ec" O:c, !--·--- Camp Durant -~- ii ,, ,, -~-.,,.----"'----===-=~~-==-====~---·--~==~ ! Ti t.!_e: ' ·---, Di vi,; ior. ! Sit~ Layout. Map o~ i------1:.; t~ ind1:ztriol ' 1998 jora,..,:, ~y: : ------··--- 1',1 :-'' __ -'..! '.i.(~~;__-~~~~ _: _ _3_~-.. ------- ,i-i:i.,.mi::.i.~,..,,.,,;.-, ~;;;,.,·.,.;,··· .,..-·-·,.,;;-....iiiiamiiiiiiiii...iiiiiiiiiiimiimiiiiiiiiaiiiiiiimiiiii,iiiiiimsiiaiiii,ii,iimmiiiiiiiiimmiliiiia:•~· -• . , ,, I i'j j 1 Mettrey/Hall bu rton 0 Supply Well ~ r--~- 1-~-=======-===--=::::::•·:-::::::::::::::: ,N;o;rt;;h;s;id;e;;D;,r:. :: .• ::=--J J -- 1 0 I I ,· _ Drinking Water Well j 1 N C. Drums d I i I ABLE I Manufacturin,) j I ! Dumpster ~ □ Oil Stained Soi! F0,mi::rTurning Oispos:ar Area----- (Stressed Vegaiation) 7 [ i I Site Lavout Mau ~ 1 l. ij ') ~ a ABLE iv!anufacturing Company P.illings and Garrett= Inc. -g ~ Charl!e Brown'::: C2.tering Service I :: Crn<"'y Prec,se S<cps W wctl~ncls 5. Former Halliburton facility 6. REA Construction 7. Background drinking water well 8. Lincoln Park North Complex ' ! I I I I I I I I I I I I I I I I I I ' I I -I ! I I I I I I I I I I I I I I I I I I I South State Engineering, a tool and dye manufacturer (Reference 14). When ABLE purchased the property, South State removed a large pile of metal turnings that had accumulated behind the plant building (Reference I 5). The metal turnings pile was reported to be approximately 20 foot by 45 foot area and 4 foot in height and located in the southwest portion of the property. Presently, scraps of metal and tunings are still visible in the location of the former pile (Reference 16). On June 11, 1991, Superfund Section personnel observed stressed vegetation at the former pile location (Reference 7). A former employee of both South State and ABLE reported that trichloroethylene was used at the site, although it was his belief that the use was "limited" (Reference 8). A degreasing unit that used chlorinated solvents had been used for years but was replaced with a Safety-Kleen unit that did not use solvents (Reference 8). Other businesses within the Greshams Lake area were possibly using chlorinated solvents. The REA Construction facility on Greshams Lake Road was a former asphalt plant run by the NC Department of Transportation (NC DOT). In 1989 the NC DOT conducted a survey of the properties on which I, I, I trichloroethane, carbon tetrachloride, or any other of their residual decomposed constituents to determine if contaminants still remain (Reference 35). The REA Construction property on Greshams Lake Road was one of the NC DOT former properties that used chlorinated hydrocarbons (Reference 35). A employee of REA Construction has stated that chlorinated hydrocarbons were disposed of on the REA property (Reference 16). Another business that may have used chlorinated hydrocarbons is Halliburton Industries. No information is available on the former Halliburton facility or what chemicals were used at the facility. But employees at other businesses within the area stated that Halliburton used large quantities of chemicals (Reference 36). On April 1992, Halliburton Services sent a letter to the Division of Health Services stating that "the facility located near Raleigh does not generate or dispose of hazardous waste material". In the letter, they stated that the facility was a shop for repairing and storing mobile equipment not a hazardous waste generator and that "any waste generated during the course of an industrial cleaning job will be generated by a customer whose site material has been generated on. And our customer makes arrangements for proper generator authority." (Reference 3 7). Extensive groundwater monitoring within the area has shown the presence of several chlorinated hydrocarbons including cis-1,2-dichloroethene, trichloroethene, and vinyl chloride. No single source has been identified and multiple sources are a possibility. A second plume containing petroleum constituents, such as methyl-t-butyl ether (MTBE) have been identified by the groundwater data. A leaking above-ground storage tank at the Halliburton facility was removed in 1990 by ATEC Environmental under the recommendation of the DEM, Groundwater Section (Reference 17). 2.4 Regulatory History and Previous Investigations Extensive groundwater investigations have been conducted at the ABLE property, as well as the other surrounding facilities. These investigations by several Department of Environment and Natural Resources (DENR) divisions and the Department of Health and Human Services (DI-II-IS) have been unable to prove ABLE as the sole source for the chlorinated hydrocarbon contamination. In 1989, the DHHS found evidence of chlorinated hydrocarbons in the ABLE's drinking water well. Results revealed the presence of vinyl chloride at 5.4 micrograms/liter (ug/1), 1-2-dichlororethylene at 135.3 ug/1 and trichloroethylene at 98.5 ug/1. In 1990 and 1991, investigations by the DENR Superfund Section and Division of Environmental Management (DEM, currently the Division of Water Quality) revealed evidence of chlorinated hydrocarbons in the drinking water at ABLE and several other facilities drinking water wells upgradicnt, downgradient, and cross-gradient of the ABLE property (Appendix A). Drinking water wells 4 I I I I I I I I I I I • I I I I I I I within the area contained trichloroethylene as high as 26.7 ug/1 in the well approximately 0.25 mile south of the ABLE property at Charlie Brown's Catering Restaurant. A drinking water well just north of the ABLE property on Northside Drive, the former Halliburton Industries, contained cis-1,2-dichloroethylene at 28.6 ug/1. Soil on the ABLE property revealed levels of bis(2- ethylhexyl)phthalate at 18 milligrams/kilogram (mg/kg) and 32 mg/kg. See Appendix A for the complete analytical results of the 1989 Superfund Section and DEM investigation. In I 99 I, the president and owner of ABLE Manufacturing, Mr. Wallace Green, contracted Trigon Engineering to conduct a site investigation of the property (Reference 8). Samples were collected in July and September of I 991 and five monitoring well and one drinking water well contained levels of chlorinated hydrocarbons above "the state standard concentrations". Vinyl chloride was detected at 10 ug/1, as well as trans-1,2-dichloroethenc at 2 ug/1, and tetrachloroethene at I ug/1 in the drinking water well at ABLE. Soil samples were collected from the loading dock area, the former metal turnings disposal area, and from soil boring beneath the ABLE building. Results indicated that soil sampled contained no petroleum hydrocarbons or chlorinated hydrocarbons above the quantitation limits of the analytical methods used (Reference 8, Appendix B). Table I is a summary table of the Trigon results, see Appendix B for the complete analytical results of the Trigon Investigation. Figure 3 includes the location of all the wells that were installed and sampled during the Trigon investigation. TABLE 1. Summary of the Analytical Data Collected by Trigon Engineering Consultants on July 22, 1991, results reported in ug/1. [Blank entries indicate the concentration was not above quantitation limit of analytical method.] MW-I MW-2 MW-3 MW-4 MW-5 ABLE Blanks Contaminant Dw(a) Chloroform 2 I, 1-dichlorocthcne 8 trans 1,2-dichloroethenc 41 2 Tetrachloroethane 1 I, I, I-trichloroethane 13 12 34 7 I Trichloroethene 17 17 75 Vinyl chloride 10 (a) ABLE Manufacturing Drinking water well. In 1992, the Division of Environmental Management (DEM) conducted an extensive investigation of the groundwater contamination at the site. Approximately I 6 monitoring wells were installed and sampled, as well as samples collected from the 5 monitoring wells installed by Trigon and the drinking water/supply wells at ABLE and Halliburton. Forty soil samples were collected during the installation of nine of the monitoring wells. Soil samples north of ABLE were contaminated with chlorinated hydrocarbons and petroleum constituents, the highest values being 57 ug/kg 1,4-dichlorobenzene, 46 ug/mg chlorobenzene, 20 ug/mg 1,3-dichlorobenzene, 9.8 mg/kg naphthalene, 3.1 ug/kg 1,2,4-trichlorobenzene and 2 ug/kg 2-chlorotoluene. Figure 4 5 268 I I '-'- \ \ Northside Ori ve \ \ \ \ ' \ \ \ \ \ ~ '('l1il-3 7 ' EIA-3 '- \ \ ' \ \ ' I ,_ I I _______ ,, I MW-5 ~ <,-MW-4 -' ' I I i I I I I ' ! I ' I 26 9 I I ; I I I 268.5 ---~ D:rnestic Well L,xation ~ i<onitoring Well location ~:;-i!and auser sample location 3 North Carolina Tor..cgraphic Contour and Elevation (Data :supplied by ABLE M,-JJ1ufacturing) E!:;tirr.:1tec1 Groundwater ContoL)l- and Eleva U.on (!?.ctsed up::>n elevnl.i.on data suppl..i.E..'Cl Uy ABLE Ma.n~.f.actu.rinyi TRIGJN F.NGi:llEFR[NG (D[·l.SUT.,'J'i\l·f.l'::...;, n,;c ._ R.r.1.lcish I North c.aroLi.nr.l rv-"-'·"-.~ln-,-=-470~.-j-.-•. -.,-• .c,,-,-,--_-----,,-,-•. -.-.. -,-,-;;,1'':;,---i~-10;8"/'IT-/\) (:1 i 035_9·,-:.[151 ~.....'..:'..~'....'..__.L...---'---==..----'-~~~I ABLE ~1anufc.1cturJ.ng I Inc - Site R:t.l.E:iCJh L·-!orU1 Carolina plan ,,..,i th tq:c~rraphic and qroundwa l:e;: con tom:~;; o~""'"" ,,,,-~." Title: Sample Location Map showing monitoring wells and soil sample locations during the 1991 Trigon Engineering Investigation l)ivision of •lastc Management 13uperfund Section Scale:Not Lu Scale 1Date:September 1998 D:caw1J By: Triqon Site Name:Greshams Lake Industrial Park 1\JCD 9 8 5 2 3 2 J 7 9 0 4 () ~-u. ?PLY Wc'LL :::::>T..ci.E ( tJ":."fO.L..Lch ,V\ u..J ! I I I I I I I I I I I I I I I I I I I I i i I I I I I I I I i I i I I I • WaL ' ,~-~,~---~-~--------~~ ! F 1..; ,. : '; !NorU·, '.::!!::r..,1 i:1;. i.:i•.'isio:: I of ~fsLe ~~~e;e~c: : V ::.c::-:>l.C ,---! S! '·"' :-;:::.;;:c: ------------------------'--- ]Titl,,: 1972 1>.'..·.risl0n of Envi:ron::ie~ta::.-:-1,,,i:i:!gemc:-::. ::.1.:~,,-,1:;:-,:: locatio1:s ·! ! ; I ;----------~---------------------·-···------------7 jin,,,._,;: ~y: iLepha:1.i, .. Grubt-s ------'-------------j----------- Jndu~t~ial Pa:·~ ' ~C~ 9&6 232 37; _________ :.__ __ _ i Uate: !...a!:e '::t:>'i\,,. o.,,_;l:t,. Mt!...., / -0· 15' J])ci_:? ' 0 :·•-;,o,?j 1/J li DE MT C, 71;? . Gi<cSHP/\\ uJKc {] WA;KE-co II IV .,._ ·-,_ .-.· C ' 6A I I I I I I I I I I I I I I i I I I I I I I I I I I I I I I I I I I I I I I shows the locations of all the wells (monitoring and drinking/supply) that were sampled either during the DEM investigation. Table 2 is a summary table for the DEM sampling results, sec Appendix C for the complete analytical results of the DEM Investigation. After the investigation, the DEM requested the Wake County Health Department to sample septage from the septic tank at ABLE to possible delineate a source. Chlorinated hydrocarbons and petroleum products were detected, 11 ug/1 trichloroethene, 5.4 benzene, I 04 ug/1 cis-1,2-dichloroethene, 3.3 ug/1 chloroform, 37.9 ug/1 toluene, and 57.3 ug/1 xylenes (Reference 9). During a site reconnaissance on October 31, 1995 Superfund personnel observed several old and corroded drums on the loading dock which seemed to have leaked, a dumpster, and two empty truck trailers. The ABLE manufacturing building at the time seemed to have been abandoned. (Reference 7). On January 8, 1996, the State of North Carolina, Hazardous Waste Section notified Mr. Green of a hazardous waste violation at the ABLE facility (Reference I 0). On November 2, 1995, personnel of the Hazardous Waste Section responded to a complaint involving the storage and disposal of unknown materials. Numerous 55-gallon drums (a minimum of sixteen) were observed on the loading dock and "oil like" stains were observed on the side wall of the loading dock. Mr. Green was asked to comply with the Hazardous Waste requirements (Reference I 0). On June 11, 1996, the NC Superfund Section conducted a combined Preliminary Assessment and Site Inspection (PA/SI) at Grcshams Lake Industrial Park (Reference I I). This investigation was conducted to supplement analytical data from previous investigations and to determine if contaminants had migrated to downstream targets from the site via the groundwater and surface water pathways. Wells downgradient were sampled as well as several locations along the surface water pathway. Samples were analyzed for selected metals, semi-volatile organic and volatile organic compounds. Two drinking water wells were impacted with chlorinated hydrocarbons, the well al the former Halliburton facility contained IO ug/1 cis-1,2- dichloroethene and the well at Charlie Brown's Catering contained 30 ug/1 trichlorocthylene (Reference, Appendix D). The drinking water well at Billings and Garrett contained 7 ug/1 of methyl-t-butyl ether (Reference 11, Appendix D). The analytical data indicated that no constituents attributable to the site were found at levels above detection limits in the surface water pathway. Areas of surface soil contamination with bis(2-ethylhexyl)phthalate had been identified on the ABLE property, but the concentration of 32 mg/kg is below health-based benchmarks (Reference 11, Appendix D). Table 3 is a summary table for the Superfund PA/SI sampling results, sec Appendix D for the complete analytical results of the PA/SI Investigation. Refer to Figure 5 for all the sampling locations during the PA/SI Investigation. The Hazardous Waste Section conducted a follow-up investigation on September 23, 1997 (Reference 12). Four samples were collected; one of the debris on the loading dock and three surface soil samples from beneath the loading dock. Arsenic (14 mg/kg), Barium (49 mg/kg), cadmium (27 mg/kg), chromium (300 mg/kg), lead (320 mg/kg) and bis(2- ethylhexyl)phthalatc (237 mg/kg) were detected in the debris on the loading dock. The highest results within the three soil samples were barium (94 mg/kg), chromium (240 mg/kg), and lead (59 mg/kg) (Reference 12). The Division of Environmental Health monitors several wells within two miles of the site. Data from the final quarter of 1995 and the first quarter of 1996 reveal low levels of chlorinated hydrocarbons in the drinking water well at REA Construction Co., approximately 0.17 mile from ABLE, and Homestead Village Mobile Home Park located 0.9 mile of ABLE (Reference 13). 8 TABLE 2: Summary of the Groundwater data collected by the DEM during the 1992 Investigation, all concentrations are given in ug/1. tri- chloroethene ABLE OW 50 MW-1 1.2 MW-1A 24 MW-2 0.98 MW-2A 62 MW-3 12 MW-4 0.7 MW-5 T MW-6 4.3 MW-6A 1 MW-9 MW-9A 7.7 MW-11 1.9 MW-11A 12 MW-12 5.5 MW-12A 3.6 MW-13A 3.6 MW-14A MW-15 MW-15A MW-1A soil MW-9A soil MW-6A soil MW-12 soil 1.8 MW-12A soil MW-13A soil MW-15 soil MW-15A soil T -trace quantities Blank entry -non-detect cis-1,2-trans-1,2-tetra- dichloroethene dichloroethene chloroethene 146 2 0.39 2.9 3 45 T 2.2 1.3 120 1.4 0.74 13 1.4 0.84 T 5.2 0.76 T 12 11 46 T 1.3 1.3 T 1.3 T T 1.8 tetra-1, 1-di-1,1-di-chloro-1,3-di-1,2,4-tri 1,4-di- chloroethane chloroethene chloroethane benzene chlorobenzene chlorobenzene chlorobenzene 24 11 3.9 1.6 3.7 16 12 1.6 0.41 ' 0.4 T 0.38 19 7.7 1.3 0.29 i 0.56 13 7.4 2.3 0.75 0.83 0.61 1 1 3.4 0.29 46 20 3.1 57 7.4 4 T 8.3 chloro-chloro-isopropyl MTBE form toluene toluene 1.2 T 0.53 0.44 T 9.8 37 2 I I TABLE 3: Summary of significant analytical results collected during the Combined PA/SI on I I I I I I I I I I I I I I I I I June 11, 1996 by the NC Superfund Section SAMPLE ID LOCATION ORGANICS (ppb) TOTAL METALS (ppm) GL-001-PW Lincoln Park Acetone 6J Barium 0.06 North (Upgradient Methylene Chloride Trace Chromium 0.01 well) 1,1-Dichloroethane Trace 2-Butanone 2J Chloroform Trace 1,1,1-Trichloroethane Trace GL-002-PW Jones well on 2-Butanone lJ Barium 0.05 Vineland Chloroform Trace GL-003-PW Mettrey well ( old Acetone 31 Barium 0.08 Halliburton well Trans-1,2-Dichloroethene Tr. Lead 0.007 on Northside Cis-1,2-Dichloroethene 10 Drive) Chloroform Trace Trichloroethylene 41 1,4-Dichlorobenzene Trace GL-004-PW Charlie Brown's Acetone 51 Barium 0.04 Catering Service Methylene Chloride lJ Copper 0.06 well T rans-1,2-Dichoroethene Tr. Lead 0.006 2-Butanone lJ Zinc 0.14 Cis-1,2-Dichloroethene 21 Chloroform Trace Trichloroethylene 30 GL-005-P\V Century Precast Acetone 41 Barium 0.05 Steps well Zinc 0.07 GL-006-PW · Billings and Acetone 41 Barium 0.06 Garrett well Chlorofom1 Trace Methyl-I-Butyl Ether 7 GL-007-PW Drake well on Acetone 41 Barium 0.08 Vineland Chloroform Trace Zinc 0.14 GL-003-PW Lake Center well 2-Butanone Trace Barium 0.08 •, on Clearfield Road Chloroform Trace I, 1,1-Trichlorocthane Trace GL-001-SW Durant Lake Acetone 61 -, Barium 0.03 (Background) 2-Butanone lJ ppb = parts per billion (water: ug/1; soil/sedunent: tig/kg) ppm= parts per million (water:mg/1; soil/sediment: mg/kg) C = Possible laboratory contamination or background PW= Potable Well SL= Soil SW= Surface.Water SD = Sediment J = Estunatcd Tr. = Trace : _ _. = <h1inimum Detection Limit Highlighted levels arc _significantly above background 10 I I I I I I I I I I I I I I I I I I I TABLE 3: Summary of significant analytical results collected during the Combined PA/SI on June 11,1996 by the NC Superfund Section (continued) SAMPLE ID LOCATION ORGANICS (ppb) TOTAL METALS (ppm) GL-002-SW Perry Creek Acetone 9J Barium 0.16 upstream of Methylene Chloride lJ Chromium 0.02 landfill Toluene Trace Lead 0.11 GL-003-SW Perry Creek Acetone 9J Barium 0.16 Zinc 0.06 downstream of 2-Butanone lJ Chromium 0.02 Lead 0.011 landfill Toluene Trace GL-004-SW Wetlands Benzene Trace Barium 0.08 GL-005-SW GresharnsLake Acetone 6J Barium 0.07 Methylene Chloride 3J 2-Butanone Trace Benzene Trace GL-105-SW Gresharns Lake Acetone 6J Barium 0.06 (Duplicate) Methylene Chloride 1J 2-Butanone lJ GL-00 I-SD Durant Lake u Barium 16 (Backgr0tm.d) Zinc 14 GL-002-SD Perry Creek Acetone 7 J, C Barium 10 upstream of Methylene Chloride 1.5J,C Zinc 0.12 · landfill Carbon Disulfide Trace GL-003-SD Perry Creek u Barium 24 downstream of Zinc 14 landfill GL-004-SD Wetlnr.ds u Barium 33 Zinc 14 - GL-005-SD Greshams Lake u Barium 57 Chromium 2'; Copper 12 Zinc 27 GL-105-SD Lake Duplicate u Barium 55 Chromium 27 Copper 12 Zinc 27 GL-001-TB Trip blank Acetone 4J 2-Butanone lJ GL-001-PB Preservative blank u ppb = parts per billion (water: ug/1; soil/sediment: ug/kg) PW= Potable Well SW= Surface Water ppm= parts per million (watcr:mg/1; soil/sediment: mg/kg) SL= Soil SD= Sediment C = Possible laboratory contamination er background J = Estimated Tr.= Trace U = <Mffimum Detection LUnit H..ig,hlighted levels arc significantly above backgrow1d I 1 . I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I i I I I I I I I I I I I I I I I I I I I I i Camp Durant --- 1 13 ~~ '/ ( If ti I/ [r:.-;.::e No: ITit~e: 1996 NC Superfund Section ?A/SI sampling loc6:!c~~ f.....------------1 !No::~ Carolina Division ! c:: ~as t~ l-!,3,na9·ernent ! l S~perfund Section I !Oat.?.: September 1998 jSite Na~e: Gres!ia~s Lake Industrial ?ark 1996 Combined PA/SI Sampling Locations I. ABLE Manufacturing Company 2. Billings and Garrett, Inc. GL-006-PW 3. Charlie Brown's Catering Service GL-004-PW 4. Century Precast Steps GL-005-PW 5. Jones Well-Vineland Drive GL-002-PW 6. Drake Well-Vineland Drive GL-007-PW 7. Lake Center-Clearfield Road GL-008-PW 8. Perry Creek upstream of Quarry GL-003-SW/SD 9. Perry Creek downstream of Quarry GL-004-SWISD 10. PPE at Greshams Lake GL-005-SW/SD 11. Perry Creek 300' into wetland GL-004-SW/SD 12. Durant Lake GL-001-SW/SD 13. Lincoln Park North GL-001-PW 14. Former Halliburton GL-003-PW 15. Overhead Door Company (no sample) 16. \\'eeks Construction Company (no sample) I I I I I I I I I I I I I I I I I I I 3.0 WASTE/SOURCE SAMPLING 3.1 Sample Locations The DEM conducted extensive soil sampling to determine the source of contamination at and surrounding the ABLE property. Section 2.2, Table 2, Figure 2, and Appendix B of this report reviews the data and sampling locations of the DEM investigation. Groundwater contamination with chlorinated hydrocarbon and petroleum constituents has been documented since the late 1980s but no source(s) has been clearly identified. Potential sources have been sampled previously by the DEM and the Wake County Health Department. As stated previously, the septic tank at ABLE had been sampled and chlorinated hydrocarbons were present, 11 ug/1 trichloroethene, 5.4 benzene, 104 ug/1 cis-1,2-dichloroethene, 3.3 ug/1 chloroform, 37.9 ug/1 toluene, and 57.3 ug/1 xylenes. Because this septic tank appeared to be a potential source, this tank and another at the former Halliburton facility were sampled during the ES!. Also, soil samples from the loading dock area and the former turning pile were sampled, as well as the septic tanks at ABLE and the former Halliburton Industries (Reference 16, Photographs). 3.2 Analytical Results Analytical results from the soil samples from the loading dock and pile area indicate no chlorinated hydrocarbons present. The septic tank at ABLE contained estimated values of I, 1- dichloroethanc (4, 1 00J ug/kg), benzene (1,700J ug/kg), toluene (9,8001 ug/kg), chlorobenzene (2, 1001 ug/kg), (methylethyl)benzene (90,0001N ug/kg) and trimethylbenzene (300,0001N ug/kg). The septic tank at the former Halliburton facility found levels of toluene (96,000 ug/kg), chlorobenzenc (27,000 ug/kg), (3-4)methylphenol (40,000 ug/kg) arid an estimated value of (methylethyl)benzene (90,000 JN ug/kg). Table 4 is a summary of the ES! sampling data for the soil and sediment samples. Figure 6 is the sampling location map for the ES!. Appendix E contains all the CLP data for the ESI sampling event. 3.3 Conclusions Groundwater contamination with chlorinated hydrocarbon and petroleum constituents has been documented since the late 1980s but no source(s) has been clearly identified. Based on the sampling results which found chlorinated solvents, the septic tank at ABLE Manufacturing may be one of many sources of chlorinated solvents. Halliburton's septic tank contained hazardous constituents as well but no chlorinated solvents. Although ABLE is not likely to be the sole source it has been determined with reasonable certainty and CLP data to have contributed to the chlorinated solvents in the groundwater. REA Construction stated that the NC Department of Transportation asphalt testing laboratory dumped chlorinated solvents onto the ground at its facility (Reference 16). 4.0 4.1 GROUNDWATER PATHWAY Hydrogeolog,y The site is located in central Wake County on the northeastern outskirts of Raleigh, North Carolina. Wake County mostly lies within the Piedmont physiographic province. The topography is gently rolling and interstream areas are generally broad and flat. There are bedrock outcrops of metamorphic rock, consisting mainly of mica gneiss, visible on site. Biotite-feldspar gneiss, 13 I I I I I I I I I I I I I I I I I I I TABLE 4 : Summary of the Groundwater, Sediment, and Soil Samples Collected During the ESI in April 1998. ' ,, All Concentrations are given in uglkg 'c, ' ,, " '" ,;, •, 1, 1-Dichloroethane-4, 1 00J Aluminum-14,000 Benzene-1, 700J Barium-1,200 Septic tank Toluene-9,800J Cadmium-20 GL-001-SD sediment sample Chlorobenzene-2, 1 00J Iron-42,800 at ABLE (Methylethyl)benzene-90,000JN Lead-180 Trimethylbenzene-300,000JN Nickel-250 Zinc-2,600 Toluene-96,000 Aluminum-6,600 Septic tank Chlorobenzene-27,000 Barium-75 GL-002-SD sediment sample (3-4)Methylphenol-40,000 Iron-6,400 at Mettry/Halliburton (Methylethyl)benzene-90,000JN Lead-43 Zinc-760 Acetone-240 Aluminum-42,000 Barium-130 Background soil Cobalt-16 GL-001-SL lron-50,000 sample (depth -3-4') Nickel-17 Vandium-140 Zinc-54 Soil sample Aluminum-59,000 collected from Barium-180 GL-002-SL former drum storage Iron-39,000 area Vanadium-120 (depth -3-4') Zinc-54 Benzo(b/k)fiuoranthene-58J Aluminum-66,000 Duplicate sample of Barium-170 GL-102-SL Iron-35,000 GL-002-SL Vanadium-100 Zinc-53 Aluminum-53,000 Soil sample Barium-230 collected from the Cobalt-20 GL-003-SL former turnings pile Iron-35,000 area Nickel-17 ( depth -3-4') Vanadium-97 Zinc-130 1, 1, 1-trichloroethane-3J GL-004-MW Trigon MW 14 I I I I I I I I I I I I I I I I I I I TABLE 4 : Summary of the Groundwater, Sediment, and Soil Samples Collected During the ESI in April 1998. Drinking water well GL-007-PW at ABLE Duplicate of GL-107-PW GL-007-PW DEM MW on the GL-A09-MW former Halliburton property Drinking water well GL-010-PW at the former Halliburton property DEM MW GL-011-MW Shallow well between ABLE & REA Const. DEM MW GL-A11-MW Deep well between ABLE & REA Const. DEM MW GL-A12-MW Deep well between ABLE & REA Const. Drinking water well GL-016-PW at Charlie Brown Catering Drinking water well GL-017-PW at Precast Steps Drinking water at GL-01B-PW Billings & Garrett DEM MW GL-019-MW Installed by NC DOT at REA Const. DEM MW GL-020-MW installed by NC DOT at REA Const. Background drinking GL-021-PW water well J-Estimated value N-presumptive evidence of presence of material ND-Non-detect vinyl chloride -12 1,2-dichloroethene (total) -160 vinyl chloride -BJ 1,2-dichloroethene (total) -140 1,2-dichloroethene -2J acetone-61 1,2-dichloroethene (total) -BJ methyl butyl ketone -6J 1,2-dichloroehtene (total) -BJ vinyl chloride -14 1,2-dichloroethene (total) -93 1,2-dichloroehtene (total) -2J ND ND ND chloroform -3J 1, 1-dichloroethene (total) -35 1, 1, 1-trichloroethane -130 ND 15 i I I I I I I I I I I I I I I I I i I I I I I I I I I I I I ' ' 21 • • □ GRESHAMS LAKE ROAD O DEM Wells (deep) • Supply or Drinking Water Well * Septic Tani< Sample X SoH Sample // L-------1/✓ / >( , \ \ ]~orth Ca=olin~ Division ! ~f W~~~~ ~~nA~~•~~~t / S1:pe~~un~ Secti=~ l_ Gl-001-SS· X Lincoln Park tlorth i I I --------! ::;~;.:bbs l D C1eshams Lake OVERLOOK ROAD_/ I I i I I I I I I i I / I I I ! I I I I ' ' I I ' ' I I I ! I I I I I I I I I I I I I I I I I I I 1• I I quartzite gneiss, garnetiferous biotite gneiss, and interbedded gneiss and schists are predominant within the Raleigh area (Reference 18). These metamorphic rocks are foliated and fractured with varying grain sizes (medium to coarse) and color (green to dark-gray). Foliation will vary as well, where the hornblende content if high, the gneissic texture is less apparent and less foliated and the schistose rock with well-developed and well-aligned hornblende will be more foliated and have larger primary opening for groundwater flow (Reference 18). · There is one aquifer of concern in the site area; this starts in the saprolite (weathered bedrock) and extends down to bedrock. Groundwater is contained within the pore spaces of the weathered bedrock and within the bedrock fractures. Because it is hydraulically well-connected, the bedrock/saprolite system act as one aquifer. The water table was encountered at approximately 20.5-32.5 feet during the ES! (Reference 16). The Trigon study indicates groundwater flow from north to south, toward Greshams Lake. This flow pattern was confirmed by the extensive groundwater investigation in 1992 by DEM (Reference 19). 4.2 Groundwater Targets There are a number of private and community wells within a 4-mile radius of the site (Reference 20, 21, Figure 1 ). The closest drinking water well is on the ABLE Manufacturing property. Across Northside Drive is the former drinking water well for Equipment Supply Company (formerly Halliburton) and adjacent to ABLE to the east is the former drinking water well for Billings and Garrett (Reference 6). All three of these facilities stated that the wells arc currently being used to supply water to the buildings and for industrial purposes but that because of contamination, they are not for drinking (Reference 6). REA Construction has also stopped using the water for drinking but Charlie Brown Catering, south of the ABLE property, installed a charcoal filter for the water which it continues to use under Wake County Health Department approval (Reference I 6). Several of the industries within the Greshams Lake Industrial Park area were advised by the NC Occupational and Environmental Epidemiology Section not to consume and/or bath for long periods of time in the water (Reference 22). The City of Raleigh has installed lines for public water hook-ups along Greshams Lake Road and Northside Drive but not along Overlook Drive (Reference 5). Many of the facilities have connected to the Raleigh municipal water system but some have not, including all the facilities mentioned earlier. These businesses, which employed about 187 people at the time the groundwater contamination was discovered, have reportedly used bottled water for drinking since the water contamination (Reference 23). Several of the businesses do not use the water under the advise of the Wake County Health Department; however some businesses, such as Billings and Garret, do not drink the water because of the taste or because of the perception of contaminated drinking water. Billings and Garret employees were told by the health department that the water was safe to drink, but the employees stated that the water tastes too bad (Reference 36). The ABLE Manufacturing and REA Construction discontinued using the groundwater because of sampling results and recommendations from the NC Occupational and Environmental Epidemiology Section (Reference 38). At the time of discontinuation the use, ABLE and REA Construction each employed 20 people (Reference 23). The remainder of the houses shown on the USGS topographic map, not provided with municipal water, use private wells to supply drinking water. These houses were counted and multiplied by 2.46 persons-per-household (the population density for Wake County in the 1990 US Census) (Reference 24). Table 5 shows the total population which received drinking water -from private and community wells within a 4-mile radius of the site (Reference 21 ). The table does not include the employees and/or businesses with contamination, as well as the other employees at other businesses where the wells were sampled in previous investigations. No 17 I I I I I I I I I I I I I I I I I II I wellhead protection areas exist in North Carolina (Reference 25). TABLE 5. Population Currently Using Groundwater as a Source of Potable Water Within 4-Miles of the Gres hams Lake Industrial Park Site. Distance Ring Population Population served Cumulative (miles) served by Private by Community Population using Supply Wells' Wells Groundwater 0.00 -0.25 0 0 0 0.25 -0.50 34 0 34 0.50 -1.00 0 604 604 1.00 -2.00 32 268 300 2.00 -3.00 394 578 972 3.00 -4.00 732 2,935 3,667 TOTAL 5,577 ' Does not include population using ABLE Manufacturing (20 persons) and REA Construction (20 persons) drinking water wells at the time they were closed (Reference 23) 4.3 Sample Locations Six drinking water/supply wells and seven previously installed monitoring wells were sampled during the ESI (Reference 16). These wells were downgradient, upgradient and cross- gradient of the ABLE Manufacturing property. The samples are described in Table 4 and the locations shown on Figure 4. All of these wells have been previously sampled during other investigations, all the data from the wells are included in the Appendices of this report. All the water samples were analyzed for metals, volatile organic compounds, semi-volatile organic compounds, and several natural attenuation parameters, such as chloride, iron, nitrate, sulfates, and pH. Natural attenuation parameters were collected to help determine if biodegradation of the chlorinated hydrocarbons is occurring and to understand the fate and transport of the contaminants of concern. The most important process for the natural biodegradation of chlorinated solvents is reductive dechlorination. This is a process where a the chlorinated hydrocarbon is used as an electron receptor and chlorine atom is "removed" and replaced with a hydrogen atom (Reference 39). The common sequence for dechlorination is from perchloroethene to trichloroethene to dichloroethene to vinyl chloride to ethene (Reference 39). Reductive dechlorination of chlorinated solvent compounds is associated with the accumulation of daughter products and an increase in the concentration of chloride ions (Reference 39). To determine if natural attenuation is occurring several wells should be sampled and the samples should be analyzed for several parameters. An example of these parameters are oxygen, nitrate, iron (ll), sulfate, methane, pH, chloride, and the daughter products listed earlier. Reference 39 of this report is a paper by Weidemeier et. al. entitled "Overview of the Technical Protocol for Natural Attenuation of Chlorinated Aliphatic Hydrocarbons in Groundwater Under Development 18 I I I I I I I I I I I I I I I I I I I for the US Air Force Center for Environmental Excellence". This report was used as a guide for the Greshams Lake natural attenuation parameter sampling. 4.4 Analytical Results The analytical results are summarized in Table 4 and the full set of laboratory data is provided in the Appendix of this report. Chlorinated solvents were detected within two of the six drinking water/supply wells sampled. The well at ABLE manufacturing contained 12 ug/1 vinyl chloride and 169 ug/1 1,2-dichloroethene (total) and the well at the former Halliburton Industries contained 61 ug/1 acetone and estimated values of 1,2-dichloroethene at 8 ug/1 and 6 ug/1 methyl butyl ketone. Several of the wells downgradient of the ABLE property were non detect for chlorinated solvents. Both of the contaminated wells were previously used for drinking water when it was discovered that the water exceeding health-based benchmarks. Several of the monitoring wells exceeded the NC Administrative Code Title 15 A of the DENR Subchapter 2L, Classification and Water Quality Standards Applicable to the Groundwater of North Carolina (Reference 26). Vinyl chloride and 1,2-dichloroethene were detected in monitoring well 11 A and other chlorinated hydrocarbons were detected in the monitoring well at REA Construction, such as 1, 1-dichloroethene and 1, I, ]-trichloroethane. The wells with the highest contamination also have values of natural attenuation parameters that are indicative of the biodcgradation process. Strong evidence for biodcgradation would include but arc not limited to chloride levels in the most contaminated areas to be at least 2 times background, a pH ranging from 5 to 9, sulfates greater than 20 mg/I, iron (II) greater than 1 mg/I, nitrates less than 1 mg/I, sulfates less than 20 mg/I, and the existence of dichloroethene and/or vinyl chloride (Reference 39). For example, the ABLE well contained vinyl chloride at 12 ug/1 and 160 ug/1 1,2-dichloroethenc and the chloride level was 200 milligram per liter (mg/I), 32 mg/I iron, 1.34 mg/I nitrate, less than 5 mg/I sulfates, and a pH of 5.8. By comparison, a downgradient uncontaminated well, GL-016-PW (Charlie Brown's Catering well), contained 5 mg/l chloride, less than 0.05 mg/I iron, 1.80 mg/l nitrate, and a pH of 6.3. Similarly, other wells with little or no chlorinated hydrocarbon contamination had much lower levels of these indicators. Because daughter products such as vinyl chloride and cis-1,2-dichlorocthcnc are present within the groundwater, and chloride, iron, sulfates, and pH appear to be within the designated range there is some evidence that biodegradation of chlorinated organics is occurring at the site. All natural attenuation results can be found in the Appendix E (1998 ES! analytical data) of this report. 4.5 Conclusions The groundwater at the Greshams Lake Industrial Park is contaminated with chlorinated hydrocarbons. At least 5 businesses within a quarter of a mile form the site have contaminated drinking water/supply wells and have been informed by the Department of Health that bottled water should be used for drinking and bathing (Reference 22). Other than ABLE Manufacturing, it is still unknown what sources have contributed to the groundwater contamination. There is limited evidence that natural attenuation is taking place at the site. Degradation products of chlorinated hydrocarbons, such as dichloroethene and vinyl chloride, are present in several of the wells. However, whether the toxic degradation products such as vinyl chloride are degrading further to ethene is not known. More investigation should be conducted to determine such factors as site-specific hydraulic gradient, conductivity, flow and solute transport direction and retardation coefficient. Much more data should be collected on natural attenuation parameters to establish a strong case that biodegradation of chlorinated solvents is occurring, as we did not collect data on all of the possible parameters suggested by Weidemeier (Reference 39). 19 I I I I I I I I I I I I I I I I I I I 5.0 5.1 SURFACE WATER PATHWAY Hydrologic Setting The site lies within the Neuse River drainage basin and is not included in the 500 year flood plain of Greshams Lake or Perry Creek (Reference 27). The site appears to have an elevation of approximately 300 feet, estimated from the USGS topographic quadrangle (Figure I, Reference 3). The topography of the site and surrounding area directs surface water runoff for 0.3 mile toward the south to Greshams Lake, the probable point of entry for the surface water pathway. The lake is approximately 0.4 mile in length and then flows from the lake into Perry Creek, which is surrounded by wetlands. Perry Creek flows for 2.2 miles to the Neuse River. The remainder of the 15-mile surface water pathway is located along the Neuse River (Figure 7, Reference 3). The flow rate for Perry Creek has been estimated to be approximately 1.5 cubic feet per second ( cfs) and Greshams Lake is assumed to be flowing at the same rate. The flow rate of Perry Creek increases to approximately 13 cfs as it flows closer to the Neuse River. The Neuse River flow rate in the vicinity of the site to be approximately 945 cfs (Reference 28). 5.2 Surface Water Targets There are no surface water intakes located within the 15-mile surface water pathway. The surface water intake for Raleigh is located upstream of the site at Falls Lake (Reference I I). The entire 15-mile surface water pathway is classified as "C" and "NSW", this includes the water from the dam at Greshams Lake, along Perry Creek and well into the Neuse River water body. Class "C" indicates that the body of water if protected for aquatic life propagation and survival, fishing, wildlife, secondary recreation, and agriculture. The "NSW" classification requires limitations on nutrient inputs into the water body (Reference 29). Wetlands occur on both sides of Perry Creek from the Greshams Lake dam to more than 300 feet downstream (Reference 34, Figure 7). According to the National Wetland Inventory maps, the wetlands continue to border both sides of Perry Creek until the intersection of the Neuse River. The total wetland frontage on Perry Creek is 4.4 miles and on the Neuse River is 11 .4 miles (Reference 34). Therefore, the total wetland frontage along the I 5-mile surface water pathway is 15.8 miles (Reference 34, Figure 7). The entire 15-mile surface water pathway is considered a fishery. Greshams Lake is fished for crappie and bass (Reference 11 ). Perry Creek and the Neuse River are both fished for red breast and blue gill and possibly bass and crappie as well. The Neuse River is a major fishery for numerous species of freshwater fish. No harvest data is available for these three fisheries (Reference 11 ). The 7.5 USGS maps of Raleigh East, Raleigh West, Wake Forest, and Bayleaf were reviewed by NC Superfund personnel at the North Carolina Heritage Program for sensitive environments (Reference 32). Three animals were either threatened or endangered along the IS- mile surface water pathway, Fusconaia mason'i or Atlantic Pigtoe, Elliptio roanokensis or Roanoke Slabshell, and Alasmidonta heterodon or the Dwarf Wedgemussel. One animal of special concern and was located along the 15-mile surface water pathway, Necturus lewisi or the Neuse River Waterdog (Reference 32). Figure I shows the location of all the threatened and/or endangered species along the 15-mile surface water pathway. One endangered plants is Rhus michauxii, commonly known as Michaux's Sumac located along the fifteen mile surface water pathway (Reference 32). 20 YI j '!I / VI ~ 2.2 Ml \'/ ( PERRY CREEK 2to13CFS FISHERY I \'i ! ',',: 0.4MI(. PPE 1 ) -; __ j, GRESHAMS LAKE ITE ' \ ,"0 2CFS OVERLAND FLOW FISHERY 0.3MI NEUSE RIVER 945 CFS FISHERY pat.hwa.y =~ I I I OVERLAND FLOW PPE w TDL PROBABLE POINT OF ENTRY WETLANDS TARGET DISTANCE LIMIT -, I I I I I I I I I I I I I I I I I I I I I I 5.3 Sample Locations No samples were collected for the ESI due to the fact that during the sampling event in 1996 by the NC Superfund Section no constituents attributable to the site or to the contaminated groundwater plumes were found at levels above detection limits (Reference 11 ). 5.4 Conclusions Analytical results from the 1996 PA/SI conducted by the NC Superfund Section indicate no constituents attributable to the site were found at levels above detection limits in the surface water or sediments downgradient of the ABLE Manufacturing property (Reference 11 ). For site prioritization purposes, the most important sample collected during the previous investigation was taken at the PPE and within the Perry Creek wetland. The sampling results indicated that no site-related contaminants have entered the surface water pathway. 6.0 SOIL EXPOSURE AND AIR PATHWAY 6.1 Physical Conditions The soil types located in the vicinity of the site are considered to be a Cecil-Appling association, gently sloping to steep, well-drained soils that have a subsoil of firm clay loam to clay (Reference 30). This well drained soil is derived mostly from weathered granite, gneiss, and schist. As part of the Trigon report for ABLE Manufacturing, soil borings were described as appearing to consist of saprolitic firm to very firm, slightly micaceous to micaceous, silty, coarse to fine sands to the termination depth of the borings. The boring depths ranged from 35 to 43.5 feet below ground surface (Reference 8). 6.2 Soil and Air Targets The ABLE Manufacturing facility is currently inactive and no workers are presently on- site (Reference 6). There are however, several workers at the other facilities adjacent to or within 200 feet of the ABLE Property, such as the former Halliburton facility (currently Equipment Supply Company), Billings and Garrett, and REA Construction. There are no residences, schools, or daycares within 200 feet of the site. The closest school is Millbrook High School approximately 0.75 mile from the site (Reference 3). As shown in Table 6, according to Center for Geographic Information Analysis (CGIA), an estimated 58,008 people live within the four- mile target radius of the site (Reference 31). The 7.5 USGS maps of Raleigh East, Raleigh West, Wake Forest, and Bayleaf were reviewed by NC Superfund personnel at the North Carolina Heritage Program for sensitive environments (Reference 32). Two endangered plants were located either along the fifteen mile surface water pathway or within the 4-mile target radius of the site. These plants are Lindera subcoriacea, and Rhus michauxii, commonly known as the Bog Spicebush and Michaux's Sumac, respectively. One significantly rare plant and one candidate plant were also located within the four-mile target radius, Mate/ea dicipiens or Glade Milkvine and Saxiji-aga pensylvanica or Swamp Saxifraga. Three animals were either threatened or endangered along the 15-mile surface water pathway, Fusconaia masoni or Atlantic Pigtoe, Elliptio roanokensis or Roanoke Slabshell, and Alasmidonta heterodon or the Dwarf Wedgemussel. One animal of special concern and was located along the 15-mile surface water pathway, Necturus lewisi or the Neuse River Waterdog. Figure 1 shows the location of all the threatened and/or endangered species within the 4-mile target radius and along the 15-milc surface water pathway. 22 I I I I I I I • I I I I I D D TABLE 6: Population Estimate within 4-Miles of the Site Distance from the Site Population per Ring Cumulative Population (miles) 0.0 -0.25 mi. 0 0 0.25 -0.50 mi. 9 9 0.50 -1.00 mi. 1,762 1,771 1.00 -2.00 mi. 8,426 I 0,197 2.00 -3.00 mi. 20,404 30,601 3.00 -4.00 mi. 27,407 58,008 6.3 Soil Sample Locations In 1992, the Division of Environmental Management (DEM) conducted an extensive investigation of the groundwater contamination at the site. Approximately 16 monitoring wells were installed and soil and groundwater from these wells were sampled. Forty soil samples were collected during the installation of nine of the monitoring wells (Reference 20). Soil samples north of ABLE were contaminated with chlorinated hydrocarbons and petroleum constituents, the highest values being found at the MW 15 location (due to the expansion and construction in the area, the well is no longer there) of 57 ug/kg 1,4-dichlorobenzene, 46 ug/mg chlorobenzene, 20 ug/mg 1,3-dichlorobenzene, 9.8 mg/kg naphthalene, 3.1 ug/kg 1,2,4-trichlorobenzene and 2 ug/kg 2-chlorotoluene. These contaminated soils were located between 3 feet and 13 feet. Soil samples on the ABLE property indicated little to no chlorinated hydrocarbons and petroleum constituents present at the wells that were sampled. MW 12 and 12A or (GL-012-MW and GL- Al2-MW) were the only other 2 wells with soil contamination. Soil around the well GL-012- MW (MW 12 was unable to be sample during the ESI investigation) indicated 1.8 ug/kg cis-1, 1- dichloroethene, 1.8 ug/kg trichloroethene. Soil around the well GL-A12-MW indicated 37 ug/kg p-isopropyl toluene at 3-8 feet and trace amounts of tert-butyl benzene at 28-33 feet. Soils from MW 1 A, 9A, 6A, and 13/\ were found contain no chlorinated hydrocarbons or petroleum constituents. Figures 3, 4, 5, and 6 show the locations of all the wells-(monitoring and drinking/supply) that were sampled either during previous investigations and/or during the ES!. Table 2 is a summary table for the DEM sampling results, see Appendix C for the complete analytical results of the DEM Investigation. During the ES! investigation in April 1998, four soil samples were collected on the ABLE property, one at the former metal turnings pile location, one sample and a duplicate at the drum storage area and one background location (Reference 16). Soil sample GL-102-SL, the soil duplicate at the drum storage area, contained an estimated value of 58 ug/kg of benzo(b or k)fluoranthene. Soil sample GL-001-SL, the former turning pile area, contained 240 ug/kg of acetone. Table 4 is a summary of all the ES! analytical data and Figure 6 is the location map for all the samples collected during the ES!. All analytical results from the ESI can be found in the Appendix E of this report. 23 I I I I I I I I I D g n D I D I 6.4 Soil Exposure Pathway Conclusions The ABLE property is unfenced and accessible to the public but the area is mainly industrial and the level of contaminants are below health-based benchmarks (Reference 6, 16). Due to the nature of the soil contamination on the site, there is little likelihood of a release to air. Therefore, for purposes of site prioritization, the soil exposure pathway is not of great concern due to fact that no contaminants above health based benchmarks were detected within the surface soil of the site. All chlorinated hydrocarbons and petroleum constituents detected within the soils were found at levels below 3 feet in depth. 7.0 SUMMARY AND CONCLUSIONS Contaminated groundwater with chlorinated hydrocarbons has been documented at Greshams Lake Industrial Park since the late 1980s. The ESI conducted in April 1998 by the NC Superfund Section confirms with CLP data that continued evidence of groundwater contamination still exists at and around the ABLE Manufacturing facility. Vinyl chloride, detected in the ABLE Manufacturing drinking water well during a previous investigation, was confirmed during the ES!. Monitoring wells and other drinking water wells are contaminated with chlorinated hydrocarbons. Although ABLE Manufacturing is certainly a contributor to this contamination, multiple sources are a possibility. Because of the number of drinking water wells that are contaminated with chlorinated hydrocarbons and the number of employees they served, and the potential for migration of the plume(s), the Greshams Lake Industrial Park site is recommended for further federal action under CERCLA. 24 I I I I I I D 0 I I I I I ·I I 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. REFERENCES United States Environmental Protection Agency. 1990. 40 CFR Part 300, Hazard Ranking System: Final Rule, December 14, 1990 United States Environmental Protection Agency, Superfund Chemical Data Matrix United States Geological Survey 7.5 Minute Quadrangle maps of Bayleaf (1967, photorevised 1987), Wake Forest (1967, photorevised 1987), West Raleigh (1968, photorevised 1987), and East Raleigh (1968, photorevised 1987), North Carolina. Kozel, Stephanie L. (NC Superfund Section). 1998. Latitude and Longitude Calculation Worksheets, Greshams Lake Industrial Park, July 23, 1998. Grubbs, Stephanie K. (NC Superfund Section). 1998. Memo to file: Meeting with Don Casterlin, City of Raleigh, Public Utilities Department concerning Raleigh's Municipal Drinking water. Greshams Lake Industrial park. September 1998. Kozel, Stephanie L. (NC Superfund Section). 1998. Memo: On site Reconnaissance of the Greshams Lake Industrial Park site on March 30, 1998. Williams, Irene (NC Superfund Section). 1995. Memo to file: Greshams Lake Industrial Park Off-Site Reconnaissance trip report. November 1, I 995. Trigon Environmental Consultants, Inc. Phase II Groundwater and Soils Investigation for ABLE Manufacturing, Attention: Wallace Green. October 11, 1991. Wake County Department of Health to Tom Arrington (DEM-GW). Fax Concerning the Septic Tank Sampling Results at the ABLE Manufacturing Facility. June 9, 1992. Notice of Violation to Mr. Wallace Green and Mr. Stanley Green from the Division of Waste Management, Hazardous Waste Section. Storage and Disposal of Solid Waste at the Closed ABLE Manufacturing Facility. January 8, 1996. Combined Preliminary Assessment/Site Inspection Report, Greshams Lake Industrial Park, Raleigh, Wake County, NC NCO 986 323 379. Irene Williams, Division of Waste Management, Superfund Section. October 1996. Hazardous Waste Section Sampling Results of the ABLE Manufacturing Loading Dock Area. September 23, l 997. Williams, Irene. (NC Superfund Section). Memorandum from Mr. Hornlean Chen to Ms. Irene Williams Concerning VOC Data for Community Wells Near Greshams Lake. March 6, 1996. I I I I I I I I I • I g D D D E I 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. Butler, Jack. (NC Superfund Section). 1991. Memo to file: Greshams Lake Industrial Park. May 29, 1991. Butler, Jack. (NC Superfund Section). 1991. Memo to file: Greshams Lake Industrial Park. June 12, 1991. Kozel, Stephanie L. (NC Superfund Section). 1998. Memo to File: ES! Sampling Trip and attached field notes. May 1, 1998. Department of Environmental Management, Groundwater Section. 1996. Fax to Irene Williams regarding a Pollution Incident/ UST Leak Reporting Form for Halliburton Industrial Services. December 11, 1990. Geological Survey United States Department of the Interior and the NC Department of Water and Air Resources. November 1968. Geology and Groundwater of the Raleigh Area, North Carolina. USGS Bulletin No. 15, North Carolina Department of Water Resources. Department of Environmental Management, Groundwater Section. 1992. Maps from the Investigation by the DEM in 1992. Grubbs, Stephanie K. (NC Superfund Section). 1998. Memo to file: Public water supply data for the 4-mile target radius of the Greshams Lake Industrial park. September 9, 1998 . Grubbs, Stephanie K. (NC Superfund Section). 1998. Memo to file: Number of people using groundwater from private/community wells within the 4-mile radius of the Greshams Lake Industrial Park site. September 9, 1998. Rudo, Kenneth (Medical Evaluation and Risk Assessment Branch, Occupational and Environmental Epidemiology Section). 1996. Letter to Bruce Nicholson regarding the Health Risk Evaluation of the drinking water at Greshams Lake Industrial Park. November 14, 1996. Grubbs, Stephanie K. (NC Superfund Section). 1998. Memo to file: Number of workers on- site when contamination was found in the drinking water at Greshams Lake Industrial Park, September 18, 1998. United States Department of Commerce Bureau of the Census, County and City Data Book. 1990. Stanley, Jeannette (NC Superfund Section). 1997. Memo to Superfund Section Staff: Update on the Status of the Wellhead Protection Program in NC. I I I I I I I I I I I I I I I I I I I 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. North Carolina Administrative Code, Department of Environment, Health, and Natural Resources, Division of Environmental Management, Title I SA Subchapter 2L, Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina. November 8, 1993. United States Federal Emergency Management Agency. 1980. Flood Insurance Rate Map, Panel 165 of 810, #370243, 0165, Raleigh, Wake County, North Carolina. Grubbs, Stephanie K. (NC Superfund Section). I 998. Memo to file: Stream Flow Rate Calculations for the Surface Water Pathway, Greshams Lake Industrial Park, September 18, 1998. Classification and Water Quality Standards Assigned to the Waters of the Neuse River Basins, Division of Environmental Management, February 1, 1993. United States Department of Agriculture Soil Conservation Service and North Carolina Agricultural Experiment Station, Wake County, North Carolina, Soil Survey Report, I 970. North Carolina State Center for Geographic Information and Analysis, Populations and Households for the 4-mile radius around Greshams Lake Industrial Park. July 27, I 998. Kozel, Stephanie L. (NC Superfund Section). I 998. Memo to File: Sensitive environments within the 4-mile target area and along the I 5-mile surface water pathway. July 6, I 998. United States Department of Commerce, Technical Paper No. 40, Rainfall Frequency Atlas of the United States, 196 I. United States Department of Commerce, The Climatic Atlas of the United States, 1983. pp. 7, I 0.5. U.S. Department of the Interior, Fish and Wildlife Service. 1995. Wetland Inventory Maps. Wake Forest and Raleigh West Quadrangles. Memorandum from the NC Department of Transportation to REA Construction Co. Concerning Property Survey and Asphalt Plant Priority List. April 5, 1989. Grubbs, Stephanie K. (NC Superfund Section). 1998. Memo to file: Telephone Conversation with Billings and Garret Employee, Greshams Lake Industrial Park, September 28, I 998. Letter from Halliburton Services, Steve Burford, to the Division of Health Services, William Paige. Concerning Delisting Halliburton as a Hazardous Waste Generator. April 22, 1982. Rudo, Kenneth (Medical Evaluation and Risk Assessment Branch, Occupational and Environmental Epidemiology Section). 1990. Letter to Perry Nelson of the Groundwater Section regarding the Risk Evaluation of the Well Samples at Greshams Lake Industrial Park. March I, 1990. I I I I I I I I I I I I I I I I I I 39. Weidemeier, et al., "Overview of the Technical Protocol for Natural Attenuation of Chlorinated Aliphatic Hydrocarbons in Ground Water Under the Development for the U.S. Air Force Center for Environmental Excellence. p. 35-58. I I I I I I I I I I I I I I I I n , .. /4:.,· . /-.... ,; -: R:Dlll,,"tli\l"'.' ( . -4r1 ·.-. ~:. ":.s •• r Trailers on the vacant ABLE property. also the location of scrap metal and metal turnings. Across the street, Northsicle Drive, is the former Halliburton property. I I I I I I I I I I I I I I n D Septic tank sample GL-001-SD being collected at ABLE Manufacturing. I I I I I I I I I I I I g I n I I ms,'.::_:f ~;.:;~---~.m i{ ---~~~1!,-.,. ,V-tt~~ .. -,y~·;;:,.,.:-,tii,' : -==~ ,, '· . ·-~.b,· Sample location GL-002-SD was collected from the active septic tank at the former Mettrcy/ Halliburton facility (currently Equipment Supply Co.) A man hole cover opened up to the tank. The tank also has a concrete slab cover which had to be removed. Harry Zinn collected the sediment sample from the tank. I I I I I I I I Monitoring wefGL-004-MW was sampled by Harry Zinn. I I I I I I I I D I ABLE Manufacturing drinking water well GL-007-PW. I I I I I I I I I I I I I I I D I All facilities that have sewer hook-ups, the !OW was disposed into the sewer. This is a photograph of Supcrfond personnel running a hose from the well house to a sewer discharge. I I I I I I I I I I I I I I I I I To by pass the charcoal filtering systems, sampling had to be collected in clean pan and transferred onto the containers. The VOA samples were ·collected directly to the tap. This was sample GL-016-PW. Sample location GL-017-PW al Century !'recast Steps. This lap outside was previously sampled during the PA/SJ. I I I I I I I I I I I I I I D I I Harry Zinn collecting GL-010-PW, the drinking water well a, the former Mettrey/Halliburton facility. Background soil sample GL-001-SS. Collected north of the site behind the Lincoln Park North facility by Stuart Parker. l I I I I g D D Pictures of monitoring wells GL-01 I-MW and GL-AI I-MW, between the ABLE and REA properties. I I I I I I I I I I I I I I n D I Stephanie Kozel collecting GL-021-PW, the background drinking water sample. It was collected from Hubert Brody's house on 3011 Greshams Lake Road. Photo of the well house, which was inaccessible. Therefore, the nearest outside spigot was used to purge the well. I I I I I I I I I I I I I I I u n Harry Zinn purging MW-A12-MW on the REA property. Sampling of the MW, GL-019-MW on the REA Construction property. This is the approximate location were chlorinated solvents were disposed of by the NC DOT. I I I I I I I I I I I u D R I Picture of Doug Rumford collecting soil sample GL-003-SS. This sample was located in the former turnings pile area. .. I I I I I I I I I I I I I I I I I I I APPENDICES FOLLOWING IN VOLUME II I MILE - ' \ Mapped, edited, and published by the Geolog1ci:l Survey ROAD CLASSIFICATION Primary highway, all weather. Light-duty road, all weather, Control by USGS, NOS/NOAA, and North Carolina Geodetic iurvey imprO'led surface --•---Toi:xigraphy by photogrammetnc methods from aerial photo1?<1phs Unimproved road lair or dry taken 1965 and 1968 Field checked 1968 hard surface Secondary highway hard surface all weather, Interstate Route weather K~~~~~ Polycon1c proJect1on 10 000 foot grid ticks based on tfortt U S Route State Route Carolina coordmate syslem lUOO-meter Universal Transver-,,e Mercator gnd ticks, zone 17, shown 1n blue 1927 North American [atum RALEIGH To place on the predicted North American Datum 1983 mae the WEST N. pr0Jed1on Imes 12 meters south and 23 meters wcsl as shrwn • by dashed comer ticks SW 4 RIILFl<1H I~ QU/,,DRANG~E 35078 G6-TF 024 Red lint indicates areas in which only landmark bwldings ae shown PHOTOINSPECH::D 19>)lc 1968 DMA 5255 I SW -SEk'H'~ \If!, -~--. ·•~--' . '. , ' 1\'; ,, ne 01"~.,n 1~ o J ~Ip ~ricl v,,1orllio~ r.on1r1led r "rat er , tr :tale cf llortr C~rol1na agencies ron I pliul 't'Lµl1 , "~~ 1 l '-'i:i4 JII I ct~ 'r ~ 1urr c~ ,,. ~1 not f1Pl'1 ctwr~i>rl Map ~r11tec 1q/<1 • ,~ II[\ I 1j1r ell-• _;\. la')II of I ~Jll Jrc~~ ., ' ' ,' ~-.,--,-··:---,.-4. ' ,. '. /1, .. ' ., . ,~. '',; ·,· 1' ,,_, * ,, I I 1"' I I 7'r." I 133 MILS' I I "26 \ 125 MILS " 'i UTld GRIIJ AND 1987 MAGNEIIC NORIH OCCLINATION /IT cw-rn OF SHEET = b---3 moo A FOLDER ' SCALE 1 24 000 ' ~>------=a: ~ 0 ,ooo ,ooo aooo ,coo 5000 6000 7000 FEET ~=c'E===~='====' p--, ' 0 = EB EB ~ = CONTOUR INTERVAL 10 FEET NATIONAL GEODETIC VERTICAL DATUM Of 192~ THIS MAP COMPLIES WITH NATIONAL MAP ACCURACY ST~DARDS FOR SALE BY U S GEOLOGICAL SURVEY DENVER. COLORADO 80225, OR RESTON, VIRGINIA 22092 ~II □METER DESCRIBING TOPOGRAPHIC MAPS AND SYMBOLS IS AVALABLE ON REQUEST MILE 5/'3C' ROAD CLASSIFICATION Primary h1gh,,;ay hard surface Secondary highway hard ~urface lrterstate Route Light-duty road, hard or improved surface Un1mrroved ro::id U S fbule Slate Route RALEIGH EAST, N. C. SE<4 :lALEJGH 15 QUADRANGLE 35078-GS-TF-024 1968 PHOTORFV1SFD 1!"!87 UMJ'I. ~25:l l SE-SERl!,_3 V842