PB96-964015 EPA/ROD/R04-96/272 April 1997 EPA Superfund Record of Decision: Marine Corps Logistics Base, Operable Unit 2, Albany, GA 9/27/1996 ------- NO ACTION RECORD OF DECISION OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY ALBANY, GEORGIA UNIT IDENTIFICATION CODE: M67004 CONTRACT NO. N62467-89-D-0317/048 SEPTEMBER 1996 SOUTHERN DIVISION NAVAL FACILITIES ENGINEERING COMMAND NORTH CHARLESTON, SOUTH CAROLINA 29419-9010 o PWWTED CM RECYCLED PAPER ------- NO ACTION RECORD OF DECISION OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY ALBANY, GEORGIA Unit Identification Code: M67004 Contract No. N62467-89-D-0317/048 Prepared by: ABB Environmental Services, Inc. 2590 Executive Center Circle, East Tallahassee, Florida 32301 Prepared for: Department of the Navy, Southern Division Naval Facilities Engineering Command 2155 Eagle Drive North Charleston, South Carolina 29418 Joel Sanders, Code 1868, Remedial Project Manager September 1996 ------- CERTIFICATION OF TECHNICAL DATA CONFORMITY (MAY 1987) The Contractor, ABB Environmental Services, Inc., hereby certifies that, to the best of its knowledge and belief, the technical data delivered herewith under Contract No. N62467-89-D-0317/048 are complete and accurate and comply with all requirements of this contract. DATE: September 13. 1996 NAME AND TITLE OF CERTIFYING OFFICIAL: Joseph H. Daniel, P.G. Task Order Manager NAME AND TITLE OF CERTIFYING OFFICIAL: David E. Heislein Project Technical Lead (DFAR 252.227-7036) ------- -8518 MflY 22; 97.. 7:24 No. 001 P.01 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 4 ATLANTA FEDERAL CENTER 100 ALABAMA STREET. S.W. ATLANTA, GEORGIA 30303-3104 fSEP 2? 19§B CERTIFIED MATL RETURN RECEIPT REQUESTED 4WD-FFB Commanding General Marine Corps Logistics Base-Albany Albany, Georgia 31704-1128 SUBJ: Record of Decision Operable Unit 2, PSC 11 MCLB-Albany NPL Site EPA ID# GA7170023694 Albany, GA 31704 Dear Sir: The U.S. Environmental Protection Agency (EPA) Region 4 has reviewed the above subject decision document and concurs with the selected remedy of No Action at Operable Unit 2, Potential Site of Contamination 11. This remedy is supported by the previously completed Remedial Investigation, Feasibility Study and Risk Assessment Reports. The selected remedy of No Action is protective of human health and the environment, complies with Federal and State requirements that arc legally applicable or relevant and appropriate to the remedial action and is cost effective. Sincerely, 'V Richard Green Acting Director Waste Management Division cc: Elsie Munscll, Deputy Assistant Secretary of the Navy Lt Frantz, MCLH-AJbany Joel Sanders, SOUTIID1V i Rocycl»tl/n»cycUbla - )>iinioil win V.<<|«in)>ii- Oil fused Inkv. on 1IK1'/. ftecy«Jed P*p*f (<0'A PoKtcontMnwr) ------- DECLARATION FOR THE NO ACTION RECORD OF DECISION SITE NAME AND ADDRESS Marine Corps Logistics Base Operable Unit 2 814 Radford Boulevard Albany, Georgia 31704-1128 'STATEMENT OF~'PURPOSEAND"'BASIS"" :.-•.-. This Record of Decision document presents the No Action response for Operable Unit (OU) 2 at the Marine Corps Logistics Base (MCLB) Albany. It was developed in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act as amended by the Superfund Amendments and Reauthorizat.ion Ace, and to the extent practicable, the National Contingency Plan. This decision is based on the site's Administrative Record, which is on file in the Dougherty County Public Library, Albany, Georgia, and the Environmental Branch Office, Facilities and Services Division, Building 5501, MCLB Albany, Albany, Georgia 31704. Both the U.S. Environmental Protection Agency Region IV and the State of Georgia Environmental Protection Division concur wich the selection of the No Action response for surface and subsurface soils, sediment, and surface water at OU 2. DESCRIPTION OF THE SELECTED REMEDY A remedial investigation and risk assessment was conducted at OU 2, consisting of Potential Source of Contamination 11. The risk assessment examined a hypothetical situation for current land use in which an older child trespasses on OU 2 and a hypothetical future land use of OU 2 assuming residential use by adults and children and associated utility construction. These risk assessment results indicate that all potential risks associated with exposure to the surface soil, sediment, and surface water are below the acceptable regulatory risk range. No chemicals of potential concern were identified in subsurface soil. Therefore, No Action is an appropriate response action. Under this alternative, no treatment, containment, or restricted access is deemed necessary. Groundwater at OU 2 will be addressed under a continuing basewide investigation within OU 6. DECLARATION STATEMENT The No Action response supports the protection of human health and the environment, complies with Federal and State requirements that are legally applicable or relevant and appropriate to the response action, and is cost effective. The No Action response addresses all surface and subsurface soils, sediment, and surface water at OU 2, whereas the groundwater will be addressed by the continuing basewide investigation within OU 6. SEP 2 3 1996 Signature Date H.K. Barnes Brigadier General Commanding General, MCLB Albany ALB-OU2.ROD ASW.O9.96 _j_ ------- TABLE OF CONTENTS No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia Chapter Title Page No . 1.0 SITE NAME, LOCATION, AND DESCRIPTION 1-1 2.0 SITE HISTORY AND ENFORCEMENT ACTIVITIES 2-1 2.1 INITIAL ASSESSMENT STUDY 2-1 2.2 CONFIRMATION STUDY 2-1 2.3 RCRA FACILITY INVESTIGATION 2-2 2.4 REMEDIAL INVESTIGATION 2-3 2.5 OU 2 RELATED DOCUMENTS 2-6 3.0 HIGHLIGHTS OF COMMUNITY PARTICIPATION 3-1 4.0 SCOPE AND ROLE OF THE NO ACTION RESPONSE AT OU 2 4-1 5.0 SUMMARY OF SITE CHARACTERISTICS 5-1 5.1 GEOLOGY 5-1 5.2 HYDROGEOLOGY 5-1 5.3 ECOLOGY 5-1 5.4 NATURE AND EXTENT OF CONTAMINANTS 5-5 6.0 SUMMARY OF SITE RISKS 6-1 7.0 EXPLANATION OF SIGNIFICANT CHANGES 7-1 APPENDIX Appendix A: Community Relations Responsiveness Summary ALB-OU2.ROD ASW.O9.96 ------- LIST OF FIGURES No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia Figure Title Page No. 1-1 Vicinity Map 1-2 1-2 PSC 11, Area Behind Small Bore and Pistol Range, Site Plan 1-3 2-1 PSC 11, Area Behind Small Bore and Pistol Range, Sample Location Map 2-4 2-2 PSC 11, Area Behind Small Bore and Pistol Range, Excavation Location Map 2-5 5-1 Location Map for Geologic Section 5-2 5-2 Geologic Section of the Albany Area 5-3 5-3 Potentiometric Surface of the Upper Floridan Aquifer in the Albany, Georgia Area, November 1985 5-4 LIST OF TABLES Table Title Page No. 5-1 Analytes Detected in Surface Soil, PSC 11 5-6 5-2 Analytes Detected in Surface Water, PSC 11 . . . . 5-7 5-3 Analytes Detected in Sediment, PSC 11 5-8 6-1 Chemicals of Potential Concern, PSC 11 6-2 6-2 Summary of Cancer and Noncancer Risk, PSC 11 6-3 ALB-OU2.ROD ASW.09.96 -III- ------- GLOSSARY ABB-ES bis CPC GEPD HI IAS rag/kg MCL MCLB MgAg ABB Environmental Services, Inc. below land surface chemicals of potential concern Georgia Environmental Protection Division hazard index initial assessment study milligrams per kilogram maximum contaminant level Marine Corps Logistics Base micrograms per kilogram micrograms per liter NCP National Oil. and Hazardous Substances Contingency Plan NPL National Priority List OU operable unit PCBs polychlorinated biphenyls PSC potential source of contamination RCRA Resource Conservation and Recovery Act RFI Resource Conservation and Recovery Act (RCRA) facility investigation. RI/RA remedial investigation and risk assessment SOUTHNAV- FACENGCOM Southern Division, Naval Facilities Engineering Command SWMU solid waste management unit USEPA U.S. Environmental Protection Agency USMC U.S. Marine Corps VOA volatile organic aromatic ALB-OU2.ROD ASW.09.96 -IV- ------- 1.0 SITE NAME. LOCATION. AND DESCRIPTION Marine Corps Logistics Base (MCLB) Albany is an active facility occupying 3,579 acres east-southeast of the city of Albany, Georgia. Land bordering MCLB Albany to the south, east, and northeast is primarily agricultural or recreational open space. The land bordering northwest and west of the base is largely residential and commercial areas of eastern Albany. Operable Unit (OU) 2 is located in the east-central portion of the base, just east of the Indian Lake Wildlife Refuge area. Figure 1-1 identifies the location of MCLB Albany and the approximate location of OU 2. OU 2 is composed of Potential Source of Contamination (PSC) 11, the area behind the Small Bore and Pistol Range (Figure 1-2). PSC 11 is a 150,000-square-foot area that reportedly stored hazardous materials in the 1960s. This remedial investigation and risk assessment (RI/RA) did not include the active firing range immediately west of PSC 11. PSC 11 currently has a vegetative cover consisting of grass, low shrubbery, and pine forests. ALB-OU2.ROD ASW.09.96 ------- ALBANf CAST ALBANY Marine Corps Logistics Base Albany N PSC = Polanliol source ol conlominolion 2,600 5,200 SCALE: 1 INCH = 5,200 FEET FIGURE 1-1 VICINITY MAP ''4 he a NO ACTION RECORD OF DECISION, OPERABLE UN|T 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ------- Indian Wildlife Small Bore and Pistol Range (Intermittent ponding) Potential source of contamination (PSC) border -^— Drainage flow direction — ^r- Dirt road Paved road Fence SCALE: 1 INCH = 200 FEET " sonnets. INC.. FIGURE 1-2 PSC 11, AREA BEHIND SMALL BORE AND PISTOL RANGE, SITE PLAN NO ACTION RECORD OF DECISION, OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ALB-OU2.ROD ASW.09.9e 1-3 ------- 2.0 SITE HISTORY AND ENFORCEMENT ACTIVITIES MCLB Albany currently serves as a U.S. military logistics center. Its primary duties include controlling the acquisition, storage, maintenance, and distribu- tion of combat and support material for the U.S. Marine Corps (USMC). The base is also used for training military personnel and other tasks and functions as directed by the Commandant of the USMC. "M'CLB" Albany- has generatect'•varioiis 'types of '.sollS and liquid-wastes", over -the' years, including hazardous wastes. The hazardous wastes include electroplating wastes containing heavy metals, organic solvents from stripping and cleaning operations, and waste fuel and oil. Beginning in 1985, three investigations were performed to assess and characterize PSCs identified at MCLB Albany. These investigations included the 1985 initial assessment study (IAS), the 1987 confirmation study, and the 1989 Resource Conservation Recovery Act (RCRA) facility investigation (RFI). As a result of these investigations, MCLB Albany was placed in Group 7 (Hazard Ranking System score of 45.91 to 43.75) of the National Priority List (NPL) for Uncontrolled Hazardous Waste Sites (December 1989) . 2.1 INITIAL ASSESSMENT STUDY. An IAS was conducted by Envirodyne Engineers, Inc., at MCLB Albany in 1985 to identify and assess PSCs posing a potential threat to human health or the environment due to contamination from past hazardous materials disposal practices. Eight PSCs were identified at MCLB Albany based on historical data, aerial photographs, field inspections, and personal interviews. All eight PSCs were evaluated to determine contaminant characteristics, migration pathways, and potential receptors. PSC 11 was not identified at this time or evaluated. The primary pathways identified for migration of contaminants from the eight IAS PSCs include erosion, surface water runoff, and groundwater transport. Surface water runoff from MCLB Albany ultimately flows into the Flint River, either north or west of the base. The predominant direction of regional groundwater flow is also westward toward the Flint River, which is located approximately 2.7 miles west of the base. Potential receptors identified include aquatic organisms in the receiving waters, predators and other animals relying on these areas for food and water, and humans using the Flint River for recreational purposes. The IAS concluded that six of the eight PSCs warranted further investigation under the Navy Assessment and Control of Installation Pollutants program to assess long-term impacts. The primary recommendation of the study was to conduct a confirmation study to confirm or disprove the existence of the suspected contamination and to quantify the extent of any existing problems. Specifically, this study would determine (1) whether or not a threat to human health or the environment existed, (2) the extent of contamination, and (3) the potential for contaminant migration. 2.2 CONFIRMATION STUDY. A confirmation study was conducted by McClelland Engineers at the MCLB Albany facility in 1987 to verify the existence of contamination not only at the six sites identified in the IAS but also at three ALB-OU2.ROD ASW.09.96 . 2-1 ------- additional PSCs identified as potential threats to human health or the environment (PSCs 9, 10, and 11). The field investigation methodology and analytical results completed during the 1987 confirmation study at PSC 11 are summarized below. * Five soil borings were drilled at PSC 11 to total depths ranging from 19 feet to 41 feet below land surface (bis). Three monitoring wells were installed in soil :borings. An ..electromagnetic survey consisting-, of: th-rjee|_..eastr to-west -lines • and two 'north-to-south tines was completed.' No surface water or sediment samples' were collected. Three soil samples and three groundwater samples were collected for laboratory analyses. Laboratory analyses included acid and base-neutral extractables, volatile organic aromatics (VOAs), pesticides and polychlorinated biphenyls (PCBs), and extraction procedure toxicity metals. No compounds were detected above quantitation limits in two soil samples. Low levels of arsenic, chromium, and lead were detected in one soil sample. These levels were well below the USEPA Toxicity Characteristic'Leaching Procedure regulatory levels of 5 mg/. Low concentrations of methylene chloride were also detected in the same soil sample; however, this compound is a common laboratory artifact. The only analyte detected in groundwater samples was mercury. This analyte was also detected in a duplicate sample but was at or below quantitation limits and Federal drinking water standards in both samples. Basewide groundwater is currently being addressed within OU 6. 2. 3 RCRA FACILITY INVESTIGATION. Subsequent to the 1987 confirmation study, PSC 11 was identified as a solid waste management unit (SWMU) by the Georgia Environmental Protection Division (GEPD) in the Part B RCRA Permit for MCLB Albany. Terms of this permit required that an RFI be conducted at PSC 11 to determine the nature and extent of releases and the potential pathways of contaminant migration to the environment. Applied Engineering and Science, Inc. , completed the RFI and submitted a final report in 1989. During the RFI, three monitoring wells, ranging in depth from 62 feet to 93 feet bis, were installed at PSC 11. Three groundwater samples were collected for laboratory analyses. No geophysical surveys were conducted, and no surface water or sediment samples were collected. Toluene was detected in each of the three groundwater samples. Laboratory analytical results for all other compounds were below quantitation limits or below MCLs for metal concentrations. The RFI concluded that based on the presence of toluene in groundwater samples, some release may be occurring from the site. The RFI recommended that the monitoring wells be monitored on a periodic basis for VOAs to determine if significant increases occur. ALB-OU2.ROD ASW.09.96 2-2 ------- 2.4 REMEDIAL INVESTIGATION. In July 1991, the Department of the Navy, representing MCLB Albany, entered into a Federal Facilities Agreement with the GEPD and the U.S. Environmental Protection Agency (USEPA) Region IV to establish a procedural framework and schedule for developing, implementing, and monitoring appropriate response actions at the facility in accordance with the provisions of the Comprehensive Environmental Response, Compensation, and Liability Act, RCRA, the National Oil and Hazardous Substances Contingency Plan (NCP), Superfund guidance and policy, and the Georgia Hazardous Waste Management Act. ABB Environmental Service's ,'Inc. • (ABB-ES) was contracted'under-'the "Comprehensive Long-Term Environmental Action, Navy contract to prepare remedial investigation and feasibility study workplans, site screening workplans, and associated planning documents for OU 1 and OU 2 concurrently. The final RI/RA report for OU 1 and OU 2 was released in May 1995. The results of this investigation for OU 2, composed of PSC 11, are presented below. The RI defined the nature and extent of contamination of surface soil, sediment, and surface water at OU 2. This investigation was conducted in two phases. The first phase of investigation included a geophysical survey, soil gas survey, cone penetrometer testing, and explosive ordnance screening. The geophysical survey was used to determine the vertical and horizontal extent of disposal trenches, identify buried metallic objects, and identify areas of previously disturbed or previously excavated soil. The soil gas survey was used to identify in situ organic vapors of selected volatile compounds that may have settled into the subsurface soils. The cone penetrometer test was to determine the composition and thickness of the overburden soil. The second phase of remedial investigation consisted of trench excavation and sampling, surface soil sampling (0 to 12 inches bis), and surface water and sediment sampling. Background sampling was also conducted to provide site- specific data on naturally occurring elements in MCLB Albany surface and subsurface soil and organics commonly found along roadsides or in developed areas. These background samples included random concentrations of pesticide residue and polyaromatic hydrocarbons from past use, which do not indicate a potential source of contamination. Sample locations are shown in Figure 2-1. Two trench excavations and associated soil sampling were conducted at PSC 11 based on the results of the ordnance survey and geophysical survey. Excavation of this area confirmed the disposal of miscellaneous debris (e.g., broken glass bottles and spent casings). Forty metal process vessels approximately 40 gallons in size and of unknown origin and use were identified at PSC 11. Most of these vessels were empty; however, some did contain small volumes of water. The excavated trench soil and vessels, including contents, were removed from PSC 11 in April 1996. Excavation and soil sampling locations are shown on Figure 2-2. Laboratory tests were conducted on samples from surface soils, surface water, sediment, trench excavation soil, and vessel water from PSC 11. Samples were analyzed in onsite labs and in federally approved offsite labs. Samples were analyzed for volatile organic compounds, semivolatile organic compounds, pesticides and PCBs, inorganics, and cyanide. Results of all previous investigations, along with the recent RI data, were used to support an RA. ALB-OU2.ROD ASW.09.96 2-3 ------- 11BSS01 11BSB01 11SD03 / 11SW03 // Small Bore and Pistol Range (Intermittent ponding) SCALE: 1 INCH = 200 FEET i.ue Pinimcrrv. lamca. me, «n tiSSOid) Surf ace soil sample location and designation ttswoi & Surface water and sediment sample location and designation TBSBOIA Background soil sample location and designation FIGURE 2-1 PSC 11, AREA BEHIND SMALL BORE AND PISTOL RANGE, SAMPLE LOCATION MAP H'\ALB\NAROO\OU2PSC11\PS-NAS\ 09-09-96 NO ACTION RECORD OF DECISION, OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ALB-OU2.ROD ASW.09.96 2-4 ------- Indian Lake Wildlife Refugej SCALE: 1 INCH = 200 FEET Small and Pistol EXCAVATED SOl' fUE ^r. =^ s.— _ ! (Intermittent ponding) LEGEND Potential source of contamination (PSC) border _ iii« Sample location Drainage flow direction Dirt rood Paved road Fence FIGURE 2-2 PSC 11, AREA BEHIND SMALL BORE AND PISTOL RANGE, EXCAVATION LOCATION MAP NO ACTION RECORD OF DECISION, OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA \AL3\NAJQS\OJ2FSC-.l\PS-NAB\09-09-9e ALB-OU2.ROO ASW.09.96 2-5 ------- 2.5 OU 2 RELATED DOCUMENTS. The following reports, available for review by the public at the MCLB Albany Environmental Branch Office, describe the detailed methodology and results of investigations at OU 2: Naval Facilities Engineering Command, Southern Division (SOUTHNAVFACENGCOM) , 1974, Multiple Use Natural Resources Management Plan for Marine Corps Supply Center, Albany, Georgia. Crawford, V.I., 1979, Environmental Engineering Survey, Marine Corps Logistics Base (MCLB), Albany, Ga.: prepared for SOUTHNAVFACENGCOM. Envirodyne Engineers, Inc., 1985, Initial Assessment Study, Marine Corps Logistics Base, Albany, Georgia. McClelland Engineers, 1987, Final Report, Confirmation Study Verification Step, Marine Corps Logistics Base, Albany, Georgia: prepared for SOUTHNAVFACENGCOM. Applied Engineering and Science, Inc., 1989, RCRA Facility Investigation Phase One Confirmation Study, MCLB Albany, Georgia. ABB Environmental Services, Inc. (ABB-ES), 1992, Remedial Investiga- tion/Feasibility Study Workplan for Operable Units One and Two (OUs 1 and 2), MCLB Albany, Georgia, March. ABB-ES, 1992, Sampling and Analysis Plan for OUs 1 and 2, MCLB Albany, Georgia, March. SOUTHNAVFACENGCOM, 1993, Master Plan, MCLB Albany, Albany, Georgia. ABB-ES, 1995, Remedial Investigation/Risk Assessment (RI/RA) Report for OUs 1 and 2, MCLB Albany, Georgia, May. ABB-ES, 1996, Proposed Plan for OU 2, MCLB Albany, Georgia, July. ALB-OU2.ROD ASW.09.96 2-6 ------- 3.0 HIGHLIGHTS OF COMMUNITY PARTICIPATION The No Action Proposed Plan for OU 2 was released to the public July 29, 1996. This document was made available to the public in the Information Repository located at Dougherty County Public Library and in the Administrative Record located at the Environmental Branch Office, Building 5501, MCLB Albany, Albany, Georgia 31704-1128. The public notice of the No Action Proposed Plan was published in the Albany Herald on July 30, 1996, and. in the Atlanta Con-stitution. on--August 1, 1996..'. The public comment period -for the- No-Act-icm-. Proposed Plan'was 'July 30 to August'28, 1996. A public meeting was held on August 15, 1996, at the Human Resources Office, Building 3010, MCLB Albany. At this meeting, representa- tives from SOUTHNAVFACENGCOM, MCLB Albany, USEPA Region IV, GEPD, and ABB-ES were available to discuss all aspects of OU 2 and the response action under consideration. The Community Relations Responsiveness Summary is included in Appendix A. ALB-OU2.ROD ASW.09.96 3-1 ------- A.O SCOPE AND ROLE OF THE NO ACTION RESPONSE AT OU 2 The response presented in this document is a final action for surface and subsurface soils, sediment, and surface water at OU 2. Under this response, no treatment, containment, or restricted access will be implemented at PSC 11. Groundwater at OU 2 will be addressed under a continuing basewide investigation within OU 6. This response action was concluded in accordance with the NCP and USEPA regulatory guidance for Superfund sites. ALB-OU2.ROD ASW.09.96 4_1 ------- 5.0 SUMMARY OF SITE CHARACTERISTICS 5.1 GEOLOGY. MCLB Albany is located in the Coastal Plain Physiographic Province, which is made up of layers of sand, clay, sandstone, and limestone. These layers of soil and rock extend to a depth of at least 5,000 feet bis. Each layer has been identified and named by geologists according to its composition and physical properties. The soil and rock layers at MCLB Albany, in descending order, are the clayey overburden, the Ocala Limestone, and the Lisbon Formation. The overburden layer is made up mostly of clay with some silt and sand. The Ocala Limestone is divided into an upper unit and a lower unit. The upper unit is a lime mud or chalk. The lower unit is hard, dense rock that has been dissolved by the movement of water along fractures to form underground caves and springs. The Lisbon Formation is a hard, clayey limestone. These are the soil and rock layers that control the movement of underground water in the first 350 feet bis at MCLB Albany. Figures 5-1 and 5-2 present a generalized geologic section of the Albany area.. 5.2 HYDROGEOLOGY. Soil and rock layers are also grouped and named according to how well water moves through them. Layers that bear water to wells are called aquifers, and layers that do not bear water are called confining layers. The clayey overburden and the upper unit of the Ocala Limestone are considered together to be a confining layer. The lower unit of the .Ocala Limestone is the major water-bearing zone of the Floridan aquifer. The Lisbon Formation forms a confining layer beneath the Floridan aquifer. The Floridan aquifer is recharged by rainfall that slowly percolates down through the confining units and through sinkholes. Movement of water in the Floridan aquifer is generally westward toward the Flint River, where it discharges to the river through springs (Figure 5-3). Most irrigation wells and household water wells near MCLB Albany draw water from the Floridan aquifer. City water .wells may also draw water from the Floridan aquifer, although most of the city water is produced from deeper aquifers. 5.3 ECOLOGY. The majority of forested land in the vicinity of the base is vegetated with longleaf pine flatwoods, the most extensive plant community in the southern coastal plain. Pine flatwoods grow in Florida, Georgia, South Carolina, and North Carolina. The pine flatwoods habitat commonly found at MCLB Albany supports diverse plant and animal life, including invertebrates (e.g., insects and worms), reptiles, and amphibians. A number of mammals inhabit the pine flatwoods community, although no mammal is exclusive to this habitat. Pine flatwoods also provide habitat for a variety of birds, including seed- and insect-eaters, flycatchers, and aerial predators (e.g., owls and hawks). The presence of two rare and threatened species has been confirmed at the base. The American alligator (Alligator mississippiensis), now classified as threatened, has been documented in wetland habitats at the base; this semi- ALS-OU2.ROD ASW.09.96 5_1 ------- A1 Line of geologic section SCALE: I INCH = 7.5 MILES Source: ABB environmental Service!, 1993, lioni Hicks and olheri. 1987 r:..|! • l-'j OS 2U- ji FIGURE 5-1 LOCATION MAP FOR GEOLOGIC SECTION (SHOWN IN FIGURE 5-2) NO ACTION RECORD OF DECISION, OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ------- si «8 o en co 300 - 500 - kto -I A1 O - iJ I HJOU6 H;r l.n Mtr 1110 P.t Marine Corps Logistics Base l*»l( ItciUM) ^—, \/ /\ Upper Tloridon aquiler aoi; Well idenlilicalion Geophysical logs C Coliper 0 Natural gamma R Resistivity SCALE: I INCH = 5 MILES Vtrtu! scalp grpotly noggfrotrd Source, Hlcki »nd Olhen (1987) IU 1048 (I -PS, 'J1 • 1~J • ]n FIGURE 5-2 GEOLOGIC SECTION OF THE ALBANY AREA NO ACTION RECORD OF DECISION, OPERABLE UNIT 2 MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ------- MARINE l/OGISTl SCALE: I INCH = 2.5 MILES Somct. *BB tmhonnnnUI Iti.lCM he., HM, hcfi Hlc>T»nil olh»n, «>T LEGEND — 150 Pottnliomelrlc isoplelh jho*s oltilude ol which wolir would have stood in lightly cosed wills. Doshtd where approximately located. Contour interval is )0 (eel. Datum is Notional Geodetic Vertical Datum ol 1929. -^^— Direction of groundwaler flow __»_• 'in •' y *•'.'_»' • r.' • '_»• n.i) »-• < • ;- •• FIGURE 5-3 POTENTIOMETRIC SURFACE OF THE UPPER FLORIDAN AQUIFER IN THE ALBANY, GEORGIA AREA, NOVEMBER 1985 ^Vi•iiul> NO ACTION RECORD OF DECISION, " $$')> OPERABLE UNIT 2 " I *Y MARINE CORPS LOGISTICS BASE ALBANY, GEORGIA ------- aquatic species is present throughout the southeast. Bachman's sparrow (Aimophila aestivalis), a State and federally listed "rare" species, is also a possible resident of the dry open pine forests at MCLB Albany; this large, secretive sparrow is a year-round resident of southern Georgia. The red-cockaded woodpecker (PLcoLdes borealIs), a federally listed endangered species, occurs almost exclusively within this pine flatwoods habitat; however, there are no known records for this species at MCLB Albany. 5.4 NATURE AND EXTENT OF CONTAMINANTS. The nature, extent, and concentration of potential hazardous constituents at OU 2 were studied during the remedial field investigation. According to personal interviews conducted during a previous investigation, the PSC 11 area was allegedly used for the disposal of explosive ordnance and other hazardous materials. However, extensive screening by explosives experts revealed no ordnance or other hazardous substances. Geophysical screening identified two large anomalous areas, which were excavated by explosives experts. The smaller of the two anomalies contained broken glass and one spent smoke grenade; the larger anomaly contained 40 small, metal process vessels of unknown origin and use. The excavated trench soil and vessels, including contents, were removed from PSC 11 in April 1996. Sampling results from this excavation and results from previous studies indicated no need for further investigation of subsurface soil. No other sources or potential sources of contamination were identified. Sampling results for surface soil, surface water, and sediment are presented in Tables 5-1 through 5-3. No other sources or potential sources of contamination were identified. Concentrations of analytes detected by laboratory analyses are reported in micrograms per kilogram or milligrams per kilogram (rag/kg) for soil samples and micrograms per liter for water samples. For instance, a concentration of 8,700 mg/kg for iron means that 8,700 milligrams of iron are present in each kilogram of soil (1 kilogram equals 1,000,000 milligrams). A kilogram is a unit measure of weight equal to about 2.2 pounds. One thousand micrograms equal one milligram, one thousand milligrams equal one gram, and one thousand grams equal one kilogram. A liter is a unit measure of volume roughly equal to a quart. ALB-OU2.ROD ASW.O9.96 5-5 ------- Table 5-1 Analytes Detected in Surface Soil, PSC 11 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia No. of Samples in Which the Analyte Analyte Is _ Detected/Total Conce No. of Samples Pesticides and PCBs U/g/kg) Minimum Maximum Ttion Detected Detected Concentration Concentration 4,4-DDE 1/4 13.00 13.00 13.00 4,4-DDT 1/4 Inoraanic Analvtes (mg/kg) 2.80 2.80 2.80 Aluminum 4/4 16,955.00 7,120.00 25,300.00 Antimony 2/4 Arsenic 4/4 4.95 4.60 5.30 1.29 0.57 2.10 Barium 4/4 20.98 5.70 35.20 Beryllium 3/4 0.25 0.19 0.34 Calcium 3/4 208.33 159.00 236.00 Chromium 4/4 22.55 8.90 40.80 Cobalt 4/4 Copper 4/4 3.95 2.70 5.60 6.29 0.86 19.40 Iron 4/4 28,600.00 8,700.00 38,500.00 Lead 4/4 128.13 21.20 276.00 Magnesium 4/4 190.95 90.80 323.00 Manganese 4/4 137.95 16.90 371.00 Mercury 4/4 Nickel 3/4 0.03 0.03 0.03 3.97 2.10 5.20 Potassium 3/4 183.00 116.00 228.00 Selenium 3/4 1.07 0.92 1.30 Vanadium 4/4 • 65.38 21.00 89.90 Zinc 4/4 6.23 3.20 9.20 Sample with Maximum Concentration 11SS04RE 11SS04RE 11SS01 11SS03 11SS01 11SS01 11SS01 11SS04 11SS01 11SS01 11SS02 11SS01 11SS03 11SS01 11SS04 11SS01-04 11SS03 11SS01 111SS01 11SS03 11SS01 Notes: PSC = Potential Source of Contamination. PCBs = polychlorinated biphenyls. fig/kg = micrograms per kilogram. DDE = dichlorodiphenyldichloroethene. DDT = dichlorodiphenyrtrichloroethane. mg/kg = milligrams per kilogram. ALB-OU2.ROD ASW.09.96 5-6 ------- Table 5-2 Analytes Detected in Surface Water, PSC 11 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia Analyte No. of Samples in Which the Analyte Is Detected/Total No. of Samples Mean Concentration Minimum Detected Concentration Maximum Detected Concentration Sample with Maximum Concentration Inorganic Analytes (fjglt) Aluminum Arsenic Barium Calcium Chromium Copper Iron Lead Magnesium Manganese Potassium Sodium Vanadium Zinc 4/4 4/4 4/4 4/4 4/4 3/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 4/4 2,695.00 1.35 31.33 3,880.00 4.90 6.28 2,742.50 8.98 1,151.00 257.00 4,907.50 1,224.50 11.58 20.93 1,280.00 0.90 27.10 3,520.00 4.20 5.90 2,470.00 6.50 784.00 175.00 1,950.00 698.00 6.10 13.20 3,950.00 1.70 34.10 4,150.00 5.30 7.20 3,090.00 12.50 1,290.00 300.00 6,060.00 1,410.00 14.70 25.00 11SW01 11SW02 11SW03 11SW02 11SW01 11SW01D 11SW01 11SW01D 11SW02 11SW01 11SW02 11SW02 11SW01 11SW03 Notes: PSC = Potential Source fjg/t = micrograms per of Contamination. liter. ALB-OU2.ROD ASW.O9.96 5-7 ------- Table 5-3 Analytes Detected in Sediment, PSC 11 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia Analyte No. of Samples in Which the Analyte Is Detected/Total No. of Samples Mean Concentration Minimum Detected Concentration Maximum Detected Concentration Sample with Maximum Concentration Volntae Organic Compounds (//g/kg) 2-Butanone 2/3 14.50 12.00 17.00 11SD02 Acetone 2/3 70.50 52.00 89.00 11SD02 Carbon disulfide 1/3 120.00 120.00 120.00 112D02 Toluene 2/3 3.5 3.00 4.00 12SD02 SemK/olatfle Organic Compounds (fjglkg) 4-Methylphenol 1/3 690.00 690.00 690.00 11SD02 Di-n-butylphthalate 1/3 1,900.00 1,900.00 1,900.00 11SD02 bis(2-Ethylhexyl)phthalate 1/3 400.00 400.00 400.00 11SD02 Pesticides and PCBs (//g/kg) alpha-Chlordane 1/3 8.40 8.40 8.40 11SD02 gamma-Chlordane 1/3 12.00 12.00 12.00 11SD02 4,4-DDD 3/3 21.67 14.00 28.00 11SD01RE 4,4-DDE ' 3/3 70.33 13.00 140.00 11SD02 4,4-DDT 2/3 8.85 4.70 13.00 11SD02 Inorganic Analvtes (mg/kg) Aluminum 3/3 7,040.00 5,250.00 10,500.00 11SD03 Arsenic 3/3 1.36 0.78 2.20 11SD03 Barium 3/3 33.47 14.20 55.10 11SD02 Beryllium 2/3 0.21 0.11 0.30 11SD03 Cadmium 1/3 1.10 1.10 1.10 11SD02 Calcium 3/3 • 753.67 232.00 1,390.00 11SD02 Chromium 3/3 12.07 7.60 17.70 11SD02 Cobalt 2/3 1.09 0.97 1.20 11SD03 Copper 3/3 8.10 3.10 11.50 11SD02 Iron 3/3 5,300.00 2,730.00 8,420.00 11SD02 Lead 3/3 43.60 20.30 80.60 11SD02 Magnesium 3/3 137.50 76.30 244.00 11SD02 Manganese 3/3 126.40 51.00 246.00 11SD02 Mercury 3/3 0.09- 0.04 0.19 11SD02 •Potassium" ' '".- . ' '.:"". .'"-..'."1/3'"'"..." ' '. '.'.'294.0ft '" ' ',- •'"•-.;J94.00"•• " .'.''•• 29"4'.00' • ;ilSD02" Selenium 3/3 0.99 0.27 1.40 11SD02 Sodium 2/3 233.05 13.10 453.00 11SD02 Thallium 1/3 0.41 . 0.41 0.41 11SD02 See notes at end of table. ALB-OU2.ROO ASW.09.9a 5-8 ------- Table 5-3 (Continued) Analytes Detected in Sediment, PSC 1 1 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base Albany Albany, Georgia Analyte Vanadium Zinc No. of Samples in Which the Analyte Is Detected/Total No. of Samples 3/3 3/3 Kjlpsn ivicai i .Concentration 31.43 29.83 Minimum Maxi Detected Dete Concentration Concer mum Sample with cted Maximum itration Concentration 16.80 43.60 11SD02 9.20 62.90 11SD02 Notes: //g/kg = micrograms per kilogram. PCBs = polychlorinated bipnenyls. DOD = dichlorodiphenyldichloroethane. DDE = dichlorodiphenyldichloroethene. DDT = dichlorodiphenyltrichloroethane. mg/kg = milligrams per kilogram. PSC = Potential Source of Contamination. ALB-OU2.ROD ASW.09.96 5-9 ------- 6.0 SUMMARY OF SITE RISKS The OU 2 RI analytical data were evaluated to determine if the individual compounds were site related (i.e., resulting from historical waste disposal practices) or associated with background data at the base. Based on this evaluation, a list of chemicals of potential concern (CPCs) was developed for each medium investigated at OU 2. No CPCs were identified for subsurface soil, and it was not carried through the RA. Table 6-1 presents the CPCs for surface soil, surface water, and sediment at PSC 11. These CPCs were then evaluated within the RA. An RA was prepared for OU 2 in accordance with USEPA Risk Assessment Guidance. The RA estimates or characterizes the potential present and future risks to human health and the environment posed by existing conditions at the site. Three factors were considered when evaluating the risks associated with OU 2: the nature and extent of contamination present at the site and surrounding areas the pathways through which people and the environment are or may potentially be exposed to contaminants at the site the potential toxic effects of site contaminants Exposure pathways considered for the human health RA include ingestion, dermal (or skin) contact, and inhalation of particulates. The RA examined a hypotheti- cal situation for current land use in which an older child trespasses on OU 2. The RA also examined a hypothetical future land use of OU 2, assuming residential housing (adult and child) and associated utility construction. The RA then calculated the potential risks that would result from exposure to surface soil, sediment, and surface water. The ecological risk assessment assumed that animals would have direct exposure to the surface soils, sediment, and surface water, with additional exposure through the food-chain uptake. Both cancer and noncancer risks were evaluated. Table 6-2 presents the RA results for each hypothetical exposure scenario and medium and identifies the USEPA acceptable risk range for comparison purposes. According to the NCP for Superfund sites, the estimated cancer risk value of 1 in 1 million (10~5) is the beginning point to determine the need for implementing a response action. However, the acceptable risk can range from 1 in 10,000 (10"'') to 1 in 1 million (10~6) due to site-specific conditions (Section 300.430 of the NCP). These OU 2 conditions include limited public access to an active military facility, and the majority of contaminants are inaccessible to the general public (depth bis) . These RA results indicate that all of the risks associated with the exposure to surface soil, surface water, and sediment at OU 2 are below the USEPA acceptable risk range of IxlO"6. The hazard index for each exposure scenario and medium is also below 1. ALB-OU2.ROD ASW.09.96 6-1 ------- Table 6-1 Chemicals of Potential Concern, PSC 11 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base, Albany Albany, Georgia Human Health Surface Soil Surface Water | Volatfle/Semivolatile Organic Compounds 2-Butanone Acetone Carbon disulfide Toluene 4-Methylphenol Di-n-butylphthalate Bis(2-ethylhexyl)phthalate Pesticides and PCEs 4.4'-DDD 4,4'-DDE 4,4'-DDT alpha-Chlordane gamma-Chlordane Inorganics Analvtes Aluminum X X Arsenic X Barium X Beryllium Cadmium Chromium X X Cobalt Copper X Iron Lead X Manganese X Mercury Selenium Thallium Vanadium X X Zinc X Ecological Sediment Surface Soil Surface Water Sediment X X X X X X X X X X X X X X X X XX X XX X X X X X XX XX X X XX X X X X X X X X X X XX XX X XX X X X X X X XX XX X Notes: PSC = potential source of contamination. DOD = dichtorodiphenyldichloroethane. DDE = dichlorodiphenyldichloroethene. DDT = dichlorodiphenyltrichloroethane. ALB-OU2.ROD ASW.09.96 6-2 ------- Table 6-2 Summary of Cancer and Noncancer Risk, PSC 11 No Action Record of Decision Operable Unit 2 Marine Corps Logistics Base, Albany Albany, Georgia Land Use Current Land Use Soil: Surface Water: Sediment: Future Land Use Soil: Cancer Risk' Noncancer HI2 Trespasser 1x10"9 0.03 Trespasser 3x10'7 0.14 Trespasser 9x10"7 0.02 Resident 3x10"" 0.36 Utility Worker IxlO"8 0.04 1 The beginning point to determine the need for implementing a response action is 1x10"° for cancer risk. 1 The beginning point to determine the need for implementing a response action is 1.0 for noncancer risk. Notes: PSC = potential source of contamination. HI = hazard index. ALB-OU2.ROD ASW.09.96 6-3 ------- 7.0 EXPLANATION OF SIGNIFICANT CHANGES As lead agency, SOUTHNAVFACENGCOM prepared and issued the Proposed Plan for OU 2 on July 29, 1996. This Proposed Plan described the rationale for a final No Action response at PSC 11. The USEPA, GEPD, and public concur with the No Action response. Therefore, no significant changes were made to the Proposed Plan. This response action may be reevaluated in the future if conditions at OU 2 indicate that an unacceptable risk to the public health or environment would result from exposure to the'.various media.- ••. . ; •....-..:'.. .: • • = ALB-OU2.ROD Asw.oa.96 ------- APPENDIX A COMMUNITY RELATIONS RESPONSIVENESS SUMMARY ------- COMMUNITY RELATIONS RESPONSIVENESS SUMMARY 1. 0 OVERVIEW SOUTHNAVFACENGCOM held a public meeting on August 15, 1996, at MCLB Albany no discuss the Proposed Plan for the No Action response at OU 2 and solicit comments and questions from the public. However, no citizens attended and no questions or comments were received during the public meeting. In addition, no written comments or-questions, were-reoei-ved-during the- 30-day, public comment period. 2.0 BACKGROUND OF COMMUNITY INVOLVEMENT An active community relations program providing information and soliciting input has been conducted by MCLB Albany for the entire NPL site. Interviews of citizens onbase and in the city of Albany were conducted in the winter of 1990 to identify community concerns. No significant concerns that required a focused response were identified. Most comments received were concerning the potential for contamination of water resources. However, those interviewed indicated that they place great trust in MCLB Albany and their efforts to rectify past waste disposal practices. In addition, the base formed a Technical Review Committee (TRC) that included members representing the city of Albany, Dougherty County. and the local academic community. These TRC community members were contacted in July 1996 to determine their continued interest in serving on the committee. Each member confirmed their interest in serving on the TRC. In addition, parties on the MCLB Environmental Branch mailing list were contacted to solicit new community members for the TRC. Many of these individuals responded enthusiasti- cally, and an information packet including a TRC application form was prepared and distributed on September 4, 1996. The local media have also been kept informed since MCLB Albany was placed on the NPL. Installation Restoration program fact sheets have been prepared and made available at the MCLB Environmen- tal Office at MCLB Albany. Documents concerning OU 2 are located in the Information Repository at Dougherty County Public Library and the Administrative Record at the Base Environmental Branch Office. 3.0 SUMMARY OF PUBLIC COMMENT AND AGENCY RESPONSE 3.I PUBLIC MEETING. No comments or questions were received during the public meeting held on August 15, 1996. 3.2 PUBLIC COMMENT PERIOD. The 30-day public comment period was held for the OU 2 No Action Proposed Plan from July 30 to August 28, 1996, at MCLB Albany. No comments or questions were received during the public comment period. ALB-OU2.ROD ASW.09.9fl /\_-| ------- |