Massachusetts Military ReservationOak Ridge Tennesse, 37831-760e 6 Managed by: LOCKHEED MARTIN...

Hecords Center

250287

Massachusetts Military Reservation

Decision Document Fuel Spill Site 25 (FS-25) Excavation Site

Final June 1997

Prepared for: AFCEE/MMR

Installation Restoration Program 322 E. Inner Road Box 41

OtisANGB.MA 02542 DSN: 557-4670 Comm: 508-968-4670

Prepared by: ABB Environmental Services, Inc.

Submitted by: Hazardous Waste Remedial Actions Program

Environmental Management and Enrichment Facilities Oak Ridge, Tennessee 37831-7606

Managed by: LOCKHEED MARTIN ENERGY SYSTEMS for the

U.S. DEPARTMENT OF ENERGY under contract DE-AC05-84OR21400

http:OtisANGB.MA

INSTALLATION RESTORATION PROGRAM

FUEL SPILL SITE 25 (FS-25) EXCAVATION SITE DECISION DOCUMENT

FINAL JUNE 1997

Prepared for: Air Force Center for Environmental Excellence and

Air National Guard

Prepared by: ABB Environmental Services, Inc.

Portland, Maine Project No. 7030-05

Hazardous Waste Remedial Actions Program Environmental Management and Enrichment Facilities

Oak Ridge, Tennessee 37831-7606 Managed by:

LOCKHEED MARTIN ENERGY SYSTEMS for the

U.S. DEPARTMENT OF ENERGY under contract DE-AC05-84OR21400

DECISION DOCUMENT FUEL SPILL SITE 25 (FS-25) EXCAVATION SITE

TABLE OF CONTENTS

Section Title Page No.

1.0 INTRODUCTION 1-1

2.0 STUDY AREA HISTORY AND DESCRIPTION 2-1

3.0 STUDY AREA INVESTIGATIONS 3-1

3.1 SOIL SAMPLING AT THE EXCAVATION SITE 3-1 3.1.1 Test Pit Sampling 3-1 3.1.2 Soil Boring and Related Sampling 3-2

3.2 SAMPLING OF STOCKPILED SOILS 3-2

4.0 FINDINGS OF INVESTIGATIONS 4-1

4.1 SITE GEOLOGY 4-1 4.2 SOIL SAMPLING CHEMICAL RESULTS 4-1

4.2.1 Sample Data Validation 4-1 4.2.2 Taxiway Stockpile 4-2 4.2.3 Excavation Site 4-2 4.2.4 Additional Sampling 4-3

4.3 PRELIMINARY RISK ASSESSMENT 4-4 4.3.1 Current Site Risks 4-4 4.3.2 Future Site Risks 4-5

5.0 CONCLUSIONS 5-1

5.1 SOIL CONTAMINANTS 5-1 5.2 SUMMARY OF FEASIBILITY STUDY RESULTS 5-2

5.2.1 Remedial Objectives 5-2 5.2.2 Remedial Considerations 5-4

6.0 DECISION 6-1

GLOSSARY OF ACRONYMS AND ABBREVIATIONS

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TABLE OF CONTENTS (continued)

Section Title Page No.

REFERENCES

APPENDICES

APPENDIX A - FIGURES APPENDIX B - TABLES APPENDIX C - ADDITIONAL ANALYTICAL RESULTS APPENDIX D - RESPONSIVENESS SUMMARY

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SECTION 1

1.0 INTRODUCTION

This Decision Document is being issued by the Air Force Center for Environmental Excellence under the Installation Restoration Program (IRP) at the Massachusetts Military Reservation (MMR). The decision for no further action pertains to soils at Fuel Spill Site 25 (FS-25) that contain concentration of contaminants below the calculated target cleanup level. It does not relate to soils that contain contaminant concentrations that exceed the target clean-up level, or the groundwater underlying FS-25.

The purpose of a Decision Document is to summarize evaluations of data that conclude no further action is needed on defined media at a study area. Decision Documents are issued in collaboration with state and federal regulatory agencies.

The objectives of this Decision Document are to:

• describe the history of FS-25,

• present results of investigations at Study Area FS-25, and

• explain why no further action is appropriate on these soils.

This document is a summary of information contained in the Draft Technical Report (E.G. Jordan Co., 1991a) and the Draft Feasibility Study (E.G. Jordan Co., 1991b) prepared for the FS-25 Study Area. These reports should be used to obtain more detailed information.

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2.0 STUDY AREA HISTORY AND DESCRIPTION

Study Area FS-25 covers approximately 1 acre on the southeast portion of MMR (Figure 1). The Study Area consists of a parking area, located immediately northeast of Building 167 on Izzea Street and the approximately 2,000 cubic yards (cy) of soil which were excavated from this area in November 1989 and were stored temporarily on Taxiway E.

In November 1989, excavation for upgrading the parking lot revealed petroleum-stained soils. Reportedly, some of the soils had a diesel fuel-like odor which was further substantiated by positive readings on a field photoionization detector (PID). Under direction of the Otis Air National Guard Base civil engineering staff, approximately 2,000 cy of soil were excavated and temporarily stockpiled on abandoned Taxiway E (see Figure 1). The age and source of the soil staining are unknown. Possible sources of identified petroleum contamination include heavy equipment maintenance, refueling operations, and/or runoff from the nearby flightline area.

In December 1989, the National Guard Bureau (NGB) initiated an investigation program which involved the collection of soil samples from the excavation site and stockpiled soils on Taxiway E.

The irregular boundaries of the excavation are shown in Figure 2. At the time of the investigation, two levels of excavation existed. The northern to central pit area reportedly was excavated in November 1989 to about 34 feet below the aircraft apron, west of the Study Area. During the December 1989 investigation, the excavation in this area was approximately 11 feet deep, presumably due to sloughing and/or backfilling. In southern and eastern areas of the pit, the excavation was 3 to 4 feet below grade, with steep sides that generally limited access. A partially-exposed electrical conduit crossed the excavation from northeast to southwest; a large waterline crossed from northwest to southeast (see Figure 2).

The NGB, in consultation with the U.S. Environmental Protection Agency (USEPA), backfilled the excavation with soils found to contain a total petroleum hydrocarbon (TPH) concentration below the revised target clean-up level; that location is now paved with asphalt. Approximately 100 cy of soil evaluated to have TPH concentrations exceeding the target clean-up level remain on Taxiway E. The 100 cy of soil will be treated as part of the thermal treatment of soils from Areas of Contamination FTA-1 and CS-4 (ABB-ES, 1991).

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3.0 STUDY AREA INVESTIGATIONS

The following subsections describe the soil explorations conducted at the excavation and on the stockpiled soils removed from the excavation.

3.1 SOIL SAMPLING AT THE EXCAVATION SITE

The following subsections describe the soil sampling program conducted at the excavation site.

3.1.1 Test Pit Sampling

In December 1989 nine test pits were excavated, using a backhoe at locations shown in Figure 2. Soil exposed by test pit excavation was monitored for evidence of volatile organic compounds (VOCs) with a PID. PHD responses were used to place subsequent test pits and to guide collection of soil samples for laboratory analyses. When elevated PID responses were recorded, the next test pit was placed further from the center of the excavation. Soil samples were collected at the locations of the highest PID readings. Samples were also collected in areas of background PID readings where locations were inferred to represent the outer edges of VOC contamination. Most pits were dug six to eight feet deep. However, test pits 7, 8, and 9, specifically dug to sample shallow soil horizons, were terminated at 3 feet.

Figure 3 shows the PID readings taken at each pit. This figure also shows locations of soil samples collected for laboratory analyses. The six samples from the test pits were analyzed for Target Compound List (TCL) VOCs, semivolatile organic compounds (SVOCs), Target Analyte List (TAL) inorganics, and TPH. PID readings as high as 250 parts per million (ppm) were recorded at TP-5 at 4 to 5 feet below grade. Readings from TP-1, TP-2, TP-3, TP-7, and TP-9 were at or below background. At TP-6 and TP-8, elevated PID readings occurred from 1 foot below ground surface (bgs) to the bottom of the pits. To collect representative samples, about 3 inches of soil was scraped from the test pit walls before soil was removed and placed in sample jars.

In addition to test pits, the backhoe scraped the wall of existing excavations in six locations (see Figure 2). PID readings were not above background levels along the northwestern wall. Scraped soils from 33 feet of the northeastern main pit wall had PID readings from 20 to 50 ppm over a depth interval of 1 to 10 feet below aircraft apron grade at two of the four

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locations. At the time of the scraping, the highest readings were obtained just below the frost line (i.e., approximately 1 foot below grade).

3.1.2 Soil Boring and Related Sampling

Five soil borings were completed at the excavation in December 1989, to evaluate the vertical distribution of contaminants in soil and to supplement test pit data relating to the lateral distribution of contaminants (see Figure 2). Hollow-stem augers (4.25-inch inside diameter [ID]) were advanced and split-spoon samples of in situ soils were retrieved. The split spoons were opened and their full length was scanned with a PID meter for evidence of VOCs. Soil was then scraped from along the opened spoon and placed in sample jars. Table 1 summarizes the borings and sampling intervals. Boring TB-1 was terminated at the water table, known to be approximately 60 feet below grade. However, the sampling frequency and maximum depths of other borings were based on PID readings from the split-spoon samples. Based on the PID readings, at least one sample per boring was selected for laboratory analysis.

32 SAMPLING OF STOCKPILED SOILS

The soil excavated from FS-25 was staged on Taxiway E in three long columns of contiguous dump-truck piles, approximately 5 feet high. A plastic sheet had been laid over the asphalt taxiway. It is believed the order of dumping progressed from north to south in rows three trucks wide. The order in which soil was placed was not pre-determined. Records are not believed to have maintained as to the placement of the soil in the piles. Therefore, the specific origin within the excavation of each truck load of soil on the taxiway is not known.

To evaluate whether stockpiled soils contained contaminants, a backhoe was used to expose soil from between the center and easternmost soil columns. To examine each 80 to 100 cy of soil within the stockpile, 24 excavations were completed at 16-foot intervals from north to south.

The face of each excavation was scanned with a PID, and the highest reading for each pit recorded. PID values ranged from 3 ppm to 227 ppm with the highest value recorded at Pit 4. Figure 4 shows the location of soil investigations at the stockpile and the PID reading for each sample. Samples were collected from each pit for laboratory determination of TPH content. Additionally, samples were collected from Pits 4, 8, 12, and 16 for TCL VOCs, SVOCs, and TAL inorganics analyses.

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4.0 FINDINGS OF INVESTIGATIONS

This section summarizes the physical and chemical data collected from FS-25.

4.1 SITE GEOLOGY

Examination of soils in excavation, test pits, and split-spoon soil samples indicates the study area is underlain by predominantly fine-to-medium grained sand; typical of the MMR area. The sand contains very little silt, and the infiltration of surface fluids is relatively rapid. In the eastern and southeastern area of the Study Area, a clayey silt horizon, varying in thickness from 0.5 to 5 feet, was observed at shallow depth less than 10 feet. This material was black and appeared to contain abundant organic matter, suggesting it may have been fill.

A 2-inch-thick lens of clayey silt was encountered in TB-2 at approximately 21 feet below aircraft apron grade. Faint laminations were noted in soil samples collected from 21 to 31 feet below aircraft apron grade implying undisturbed soil at these and greater depths. Groundwater at the Study Area is approximately 60 feet below ground surface based on observations from TB-1.

4.2 SOIL SAMPLING CHEMICAL RESULTS

The following subsections discuss the results of chemical analyses conducted on soil samples collected from the stockpiled soil and the excavation.

4.2.1 Sample Data Validation

To evaluate the potential of contaminant introduction by field and/or laboratory handling, sample results from the 1989 field investigation were compared to field and laboratory blank data. Action levels were established for contaminants observed in blanks. An action level is defined as five times the concentration reported in an associated blank. For compounds defined as common laboratory contaminants (methylene chloride, acetone, 2-butanone, toluene, and phthalate esters), action levels equal ten times the concentration observed in blanks.

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During validation, analytes observed in samples are compared to action levels. USEPA Region I blank evaluation protocols specify that analytes, which are reported in samples at concentrations less than action levels, be interpreted as non-detects. Complete analytical data including Raw Data Tables are contained in the Technical Report (E.G. Jordan Co., 1991a).

422 Taxiway Stockpile

No targeted TCL compounds were detected in any of the four Taxiway E soil samples, however, tentatively identified VOCs and SVOCs were identified.

TAL analyses conducted on four samples resulted in above-detection-limit values for four metals: aluminum, arsenic, chromium, and lead. Average concentrations in samples of the excavated soil are slightly higher than average concentrations observed in test pit and soil boring samples (maximum of 2.4 times for lead).

Sample No. 4 had the highest reported concentrations of TPHs (4,200 milligrams per kilograms [mg/kg]), tentatively identified VOCs (totalling 39 micrograms per kilogram [/ig/kg]), total tentatively identified SVOCs (2,100 ng/kg), and total lead (14.6 mg/kg). Most tentatively identified compounds (TIC) consisted of compounds belonging to the decane-naphthalene-octane-benzene group. TIC results indicate that the TPHs detected in Sample No. 4 appear to be largely due to single-chain alkanes, such as decane. The other three samples (Nos. 8, 12, and 16), had notably lower values of volatile and semivolatile TICs.

Results of laboratory TPH analyses conducted on 24 samples from the stockpile are summarized in Table 2 and shown in Figure 5.

42.3 Excavation Site

A single TCL VOC 1,1-dichloroethylene (1,1-DCE), was detected in soil sample from TP-4 at a concentration of 17 /*g/kg. TCL SVOCs were not detected in any samples. Generally, total concentrations of volatile and semivolatile TICs were less for excavation samples than for stockpiled samples.

Lead, not detected in the six test boring samples analyzed, was found in five of six test pit samples, ranging between 3.4 and 8.8 ppm. Concentrations reported in test pit samples are similar to the stockpile soil samples. Other inorganic metals found above detection limits were aluminum, arsenic, chromium, and vanadium (see Table 3).

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TPH results from in situ soils at the excavation were generally below the concentrations observed in associated blanks. The results of laboratory analyses conducted on six test pit samples and nine soil boring samples are summarized in Table 3 and depicted in Figure 6.

PID and analytical data are presented in two soil profiles spanning the excavation site. Orientations of the profiles are shown in Figure 7. Figure 8 shows Profile A-A', oriented perpendicular to the groundwater flow, with the results found in TP-4, TP-5, TP-8, and TB-2, near the center of the excavation. Profile B-B' is oriented parallel to groundwater flow under the center of the excavation (Figure 9).

The highest PID readings and analyte concentrations along Profile A-A' were found in samples from test pits TP-4 and TP-5, just west of the deep pit. TP-5 has the highest concentration of aluminum, arsenic, vanadium, and semivolatile organic TICs reported in test pits and borings samples. Inorganic concentrations are approximately one order of magnitude higher than MMR averages for unsaturated soils (E.G. Jordan Co., 1990). PID readings above background were observed along the eastern wall scrapings, and at shallow depths in TB-2. The readings ranged from 5 to 50 ppm.

Profile B-B' shows that limited soil contamination was indicated by:

• elevated PID readings in the upper soils of TB-2,

• low concentration of total volatile organic TICs in the sample from TP-2, and

• the noted odoriferous, stained soil observed at 10 feet in MW-1.

4.2.4 Additional Sampling

Based on comments submitted by USEPA on the Technical Report and Feasibility Study, additional samples were collected by the ANG from the excavation and the soil stockpile (Figures 10 and 11). Two samples from the excavation and ten samples from the stockpiled soils were collected and analyzed using the Toxicity Characteristic Leaching Procedure (TCLP). Samples were analyzed for organic and inorganic analytes as shown in summary tables presented in Appendix C. Barium was the only target analyte reported above the method detection limit.

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4.3 PRELIMINARY RISK ASSESSMENT

In 1990, a preliminary risk assessment (RA) was conducted to evaluate potential human health effects from exposure to contaminants detected at Study Area FS-25. RA methodologies, exposure scenarios, and results are summarized in this section. Complete details and findings of the RA is included in the Study Area FS-25 Technical Report (E.G. Jordan Co., 1991a). The RA was performed to assess risks from current site conditions and potential future risks to on-site workers. Risks due to exposure to groundwater at the site will be addressed at a later date, in conjunction with the other groundwater operable unit studies at MMR.

Assessed soil contaminants include inorganics (i.e., arsenic, chromium, lead, and vanadium), 1,1-DCE, and volatile and semivolatile TICs. Because of the difficulty in assessing TPH toxicity, TPHs were not directly considered in the risk evaluation, but were assumed to consist exclusively of TICs. TICs detected in the FS-25 soils were grouped into three categories based on chemical structure: alkane compounds, alkylbenzene compounds, and naphthalene compounds. Based on TIC data alkane compounds were assumed to comprise 95.3 percent of the TICs, alkylbenzenes comprise 4.2 percent, and naphthalenes comprise 0.5 percent. These percentages were applied to TPH results to derive a concentration for each chemical group. Limited toxicity information exists for the TICs; therefore for each chemical group, a representative compound, with dose-response values available, was selected to compute risk. For the alkanes, the dose-response value for hexane was chosen; for the alkylbenzenes, ethylbenzene was chosen; and for the naphthalenes, naphthalene was chosen (E.G. Jordan Co., 1991a). Although these particular compounds were not detected in soil samples from Study Area FS-25, toxicity information is available for them, and they are chemically similar to their respective TIC groupings. Many uncertainties are associated with this approach because it is not possible to accurately assess the toxicities of TICs without specific lexicological information. However, this methodology is considered to be conservative because the representative compounds are likely more toxic than the TICs detected (E.G. Jordan Co., 1991a).

4.3.1 Current Site Risks

Because access to the site is restricted to authorized personnel, and the Study Area is paved, there is little possibility of exposure to soils. The excavation site and stockpiled soils are in a fenced portion of the base, near the flightline, where access is strictly controlled. Under current site conditions, no risks are associated with the excavated area or stockpiled soils.

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4.3.2 Future Site Risks

To assess potential future risk at Study Area FS-25, it was assumed all the soil on Taxiway E would be replaced in the existing excavation at Study Area FS-25. This was considered to be a realistic scenario. The exposure scenario modeled was a worker digging into the replaced soil to maintain the underground utilities. Carcinogenic and noncarcinogenic risks were calculated for an adult exposed through dermal contact, incidental ingestion, and inhalation over a five-day period.

Dermal contact, incidental ingestion, and inhalation of volatile contaminants were considered to potentially pose noncarcinogenic and/or carcinogenic risks and were thus quantitatively evaluated. For this reason, a similar scenario of a worker excavating the soil and breathing volatilized contaminants was used to assess inhalation risk.

Concentrations at exposure points were computed using chemical data acquired from test pit samples at the excavation site and the soil stockpiled. Laboratory analyses conducted on Sample Nos. 4, 8, 12, and 16 at the stockpile were used to calculate average concentrations of inorganics, and volatile and semivolatile TICs. For the excavation site, analytical values for samples taken at five test pits were used to calculate average concentrations of inorganics, VOCs, and semivolatile and volatile TICs.

Carcinogenic risk was estimated by multiplying the body dose level for each carcinogen (e.g., arsenic or 1,1-DCE) by the USEPA cancer potency factor. Noncarcinogenic risk was computed by summing rations of exposure level (body dose) to the reference level (standard or guideline) for each toxicant (i.e., arsenic, chromium III, chromium VI, lead, vanadium, 1,1-DCE, hexane, ethylbenzene, and naphthalene), and was expressed as a Hazard Index (HI).

Carcinogenic and noncarcinogenic risks for each exposure route were calculated using average and maximum contaminant concentrations detected at each location. Supporting information and calculations are presented in the Technical Report for Study Area FS-25 (E.G. Jordan Co., 199 la). Risks are summarized in Table 4. The total site carcinogenic and noncarcinogenic risks (based on average concentrations) are 5xlO"9 and 0.06, respectively. For maximum concentrations, these risks are IxlO"8 and 1.1. Carcinogenic risk for FS-25 soils is several orders of magnitude below the USEPA target risk range of 10"4 to 10"6. The total site noncarcinogenic HI slightly exceeds the USEPA limit of 1.0.

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5.0 CONCLUSIONS

The following subsections summarize the results of soil chemical analysis, the preliminary risk assessment conducted on the soil, and the findings of the Feasibility Study (FS) conducted on soil of the Study Area.

5.1 SOIL CONTAMINANTS

Field PID and analytical data provide evidence that a petroleum product, or products, were released at FS-25. Other indications of soil contamination are black staining of near-surface soils in several test pits and the reported hydrocarbon odor during soil removal, prior to NGB's investigation.

Targeted TCL VOCs and SVOCs are practically absent in situ and excavated soils from FS-25, but tentatively identified volatile and semi-volatile compounds of the decanenaphthalene-octane-benzene group are present. The only TCL volatile detected was 1,1-DCE at 17 /xg/kg. Because the detected semivolatiles are not TCL compounds, detections are reported as TICs. The volatile and semivolatile TICs reported in soil samples collected from stockpiled and in situ soil from the Study Area indicate that most of the compounds typically found in fuels have degraded and weathered.

At the excavation, residual contamination was found up to 20 feet below flightline apron grade. This is evidenced by laboratory results for samples collected from TB-2. The dark clayey soil horizon, conspicuous at shallow depth along the excavation sidewalk, appears to be fill material likely deposited after the petroleum release, because organic contaminants, which have an affinity for organic-rich soils, were not detected in this horizon.

Some peripheral areas of the excavation appear to contain low concentrations of tentatively identified VOCs and SVOCs, arsenic, chromium, and lead. These areas include the eastern side wall from TP-6 to the pit ramp, and the area immediately surrounding TP-4 and TP-5.

A low concentration of a single VOC, in only one soil sample, is difficult to explain. The 17 /ig/kg of 1,1-DCE may or may not be related to the petroleum contamination under investigation, but was addressed in the RA (E.G. Jordan Co., 1991a).

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5.2 SUMMARY OF FEASIBILITY STUDY RESULTS

The FS for Study Area FS-25 was conducted as a Source Control (SC) operable unit for remediation of fuel-contaminated soils excavated from the Study Area. The remedial objective for Study Area FS-25 soil was developed on the assumption that the soil would be moved from Taxiway E and possibly placed back in the excavation.

Remedial objectives were used to formulate appropriate remedial alternatives. Remedial objectives consist of media-specific goals for protecting human health and the environment. They are developed to comply with the Applicable or Relevant and Appropriate Requirements (ARARs) presented in the FS, and to reduce potential site risks in excess of USEPA target risk levels as identified in Technical Report. This section summarizes the development of a remedial objective for Study Area FS-25 based on these factors, discusses site-specific considerations relating to remediation of contaminated soils, and identifies the soil volumes to be remediated.

52.1 Remedial Objectives

In developing remedial objectives for remediating Study Area FS-25 soils, soil contaminant concentrations were compared to applicable standards (i.e., ARARs) and/or guidance. No ARARs have been promulgated for contaminants in soil. A Massachusetts policy for excavated petroleum-contaminated soils (DEQE, 1989) was reviewed; however, this policy was not considered directly applicable for Study Area FS-25 because it was developed for virgin petroleum spills (e.g., from leaking underground storage tanks). Because the source of Study Area FS-25 soil contamination is unknown, it cannot be assumed that the source of contamination was not waste oil from heavy equipment maintenance or other non-virgin sources.

Without promulgated ARARs, contaminant concentrations were compared to health- and risk-based policies and guidelines. In the preliminary risk evaluation, carcinogenic and noncarcinogenic risks were calculated and compared with federal limits established in the National Contingency Plan (NCP). The results of the RA based on an average TPH concentration for the stockpiled soils indicated that Study Area FS-25 soils do not pose a significant risk (E.G. Jordan Co., 1991a).

Because some soil sample concentrations exceeded the average TPH concentration, a target level was calculated to provide a goal for remediation of contaminated soils. This target level was computed based on a target noncarcinogenic HI of 1.0, the federal standard for noncarcinogenic risk. The HI of 0.06, the estimated inhalation risk, was used to calculate

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the target level because it would give a more conservative target concentration, as this exposure route posed the highest risk.

As the HI of the alkanes, represented by hexane, contributed most significantly to the total HI for the inhalation pathway (i.e., 0.06 as compared to 6x10"* for alkylbenzenes), and alkanes were interpreted to comprise more than 95 percent of the detected petroleum hydrocarbons, this value was used to calculate the target level using the following equation:

Targ€t HI (LO) x TPH Concentration (ppm) = Target Level (ppn HI for most significant pathway

Based on the target risk level of 1.0 (USEPA standard), an ffl of 0.06, and an average TPH concentration in the 24 samples from stockpiled soils of 230 ppm, a target remedial action level of 3,800 ppm of TPH was calculated (E.G. Jordan Co., 1991a).

The USEPA recalculated the target level as part of their comments on the Technical Report. The USEPA cited a higher expected respiration rate resulting in an HI of 3.4 for alkane inhalation. USEPA also used the maximum detected TPH concentration (i.e., 4,200 mg/kg). The USEPA stated that based on these changes, the revised target clean up level should be 1,235 ppm of TPH.

Because it was considered possible that the stockpiled soils would be returned to the excavation site, the potential impact associated with contaminants from the FS-25 Study Area soils leaching to groundwater was assessed, using the USEPA Organic Leachate Model (OLM) (Federal Register. 1986; 51 FR 41088). As a worst case, ABB-ES assumed that all the stockpiled soil would be returned to the existing excavation, and that the soil would be exposed to infiltrating precipitation. Average concentrations of TPHs (expressed has hexane, ethylbenzene, and naphthalene) and 1,1-DCE in soils were used in the OLM to predict the leachate produced due to infiltration. Concentration of these compounds in the leachate concentration was then used in a mass-balance equation to obtain the estimated concentration of the contaminant in groundwater just downgradient of the study area. The calculations and results are present in Appendix A of the FS (E.G. Jordan Co., 1991b).

To evaluate the impact of the predicated concentrations in groundwater, carcinogenic and noncarcinogenic risk from exposure to 1,1-DCE was calculated to be 3.09x10"*. The total noncarcinogenic HI resulting from exposure to the four modeled compounds was estimated at 0.02. These results indicate that no significant risks are posed by contaminants leaching

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to groundwater. A soil target level for TPHs was calculated from target groundwater concentrations calculated for the three representative compounds. The target level, based on OLM assumptions for the FS-25 Study Area, was calculated to be 97,800 ppm for the Study Area Composition of TPHs, which is significantly greater than any detected TPH concentration. Thus, any alternative involving placement of the stockpiled soils into the excavation will not pose a risk to groundwater due to contaminant leaching, and no remedial objective was developed for the groundwater leaching scenario.

532 Remedial Considerations

Because the RA identified no risks associated with direct contact, ingestion, or inhalation of soils still in the excavation, no remedial alternatives were considered. The FS therefore focused on the remediation of the stockpiled soil exceeding the 1,235 ppm of TPH, the USEPA's revised target cleanup level.

The volume of stockpiled soil requiring remediation was calculated to be 88 cy based on the evaluation of soil sample results taken from approximately every 88 cy. One sample showed a TPH concentration greater than 1,235 ppm (i.e., 4,200 ppm), and this sample was assumed to be representative of the entire 88 cy interval.

These soils will be remediated by low-temperature thermal treatment. This technology involves heating the soils to vaporize contaminants and capturing those contaminants in the gas stream. The technology to be used is detailed in the Engineering Evaluation/Cost Analysis (ABB-ES, 1991) and the Action Memorandum (ABB-ES, 1992).

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6.0 DECISION

Based on findings of the Technical Report and Feasibility Study, soils returned to the original excavation, having a TPH concentration of less than 1,235 ppm, are not considered to pose a threat to human health and the environment.

11 JULY 1996 Date

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U.S. Environmental Protection Agency Region I, Federal Facilities Office

Concur PAULA Chief Superfund II Bn

Date

[ ] Non-concur (please provide reasons)

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Commonwealth of Massachusetts Department of Environmental Protection

Concur PAUL TAURASI Regional Director

/*/* 7/ Date

[ ] Non-concur (please provide reasons)

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ABB-ES ABB Environmental Sendees, Inc. NGB National Guard Bureau ARAR Applicable or Relevant and Appropriate Requirement

bgs below ground surface BKGD Background

CRQL Contract Required Quantitation Limit cy cubic yards

FS Feasibility Study FS-25 Fuel Spill Site 25

HI Hazard Index

ID Inside Diameter IRP Installation Restoration Program

mg/kg milligrams per kilogram MMR Massachusetts Military Reservation MSL Mean Sea Level

NCP National Contingency Plan ND Not Detected

OLM Organic Leachate Model

PID photoionization detector ppm parts per million

RA Risk Assessment

SC Source Control SVOC Semivolatile Organic Compounds

TAL Target Analyte List TCL Target Compound List TCLP Toxicity Characteristic Leaching Procedure TIC Tentatively Identified Compounds

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TPH Total Petroleum Hydrocarbons

jig/kg micrograms per kilogram USEPA U.S. Environmental Protection Agency

VOC Volatile Organic Compounds

1,1-DCE 1,1-dichloroethylene

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REFERENCES

ABB Environmental Services, Inc. (ABB-ES), 1991. "Engineering Evaluation/Cost Analysis; CS-4, FS-25, and FTA-1 Study Areas Removal Action"; Installation Restoration Program; Massachusetts Military Reservation; Portland, Maine; June 1991.

ABB Environmental Services, Inc. (ABB-ES), 1992. "Action Memorandum; AOCs CS-4, FS-25, and FTA-1 Source Removal"; Installation Restoration Program; Massachusetts Military Reservation; Portland, Maine; August 1992.

Department of Environmental Quality Engineering (Massachusetts) (DEQE), 1989. "Management Procedures for Excavated Soils Contaminated with Virgin Petroleum Oils," Policy # WSC-89-001; Commonwealth of Massachusetts, Executive Office of Environmental Affairs, Department of Environmental Quality Engineering, Bureau of Waste Site Cleanup; Boston, Massachusetts; May 2, 1989.

E.G. Jordan Co., 1990. "Site Inspection Report Task 2-3B, Field Investigation Work Conducted Spring/Summer 1988"; Installation Restoration Program; Massachusetts Military Reservation; Portland, Maine; January 1990.

E.G. Jordan Co., 1991a. "Technical Report: Study Area FS-25"; Installation Restoration Program; Massachusetts Military Reservation; Portland, Maine; Draft; January 1991.

E.G. Jordan Co., 1991b. "Feasibility Study, Study Area FS-25, Source Control Operable Unit"; Massachusetts Military Reservation; Portland, Maine; Draft; January 1991.

Federal Register. 1986. "Hazardous Waste Management System; Identification and Listing of Hazardous Waste; Final Exclusion and Final Organic Leachate Model (OLM)"; 40 CFR Part 261. Final Rule; Vol. 51, No. 219; November 13, 1986.

W0109237.080 7030-05

-\ITK\m\ A

FIGURES

Figure

1

2

3

4

5

6

7

8

9

10

11


LIST OF FIGURES

Title Page No.

Study Area Location Map A-l

Excavation Site Map A-2

Test Pit Locations and Field PID Results A-3

Field Sampling and PID Results of Excavated Soil A-4

Analytical Results for Excavated Soil A-5

Soil Analytical Results for Test Pits and Borings A-6

Orientation of Profiles A-A' and B-B' A-7

Profile A-A' Through Excavation Site A-8

Profile B-B' Through Excavation Site A-9

Excavation Site Map A-10

Field Sampling for TCLP A-ll

W0109237.080 7030-05

STOCKPILED SOIL

\ ^rl/-i ^ f̂c /̂*?v?^»r « *v ' \ I "̂ "̂"kiP/ Disposal

» / .7•;:••: 6L -, \fiOTi#«

FS-25 STUDY AREA EXCAVATION

ABB Environmental STUDY AREA Services, Inc.

LOCATION MAP

MTALLAnON MCSTOffATXlN PfKXMAM MASSACHUSETTS MUTAKY KSEHVATIOM FIGURE 1

A-l

7030-05

EDGE OF AIRCRAFT APRON

MW-1

HYDRANT O

-—

I I BLDG.

LJ TB-3

CATCH BASIN

IZZEA STREET

LEGEND MW-2

TEST BORING

MONITORING WELL

TEST PIT BLDG. BLDG.

PIT WALL SAMPLING 168 166

FENCE Jk IIII ABB Environmental Services, Inc. EXCAVATION SITE MAP

100

MSTALLATION WSTOflATIOH PDOORAM MASSACHUSETTS MLITARV RESERVATION

FS-2S DECISION

DOCUMENT FIGURE 2

7030-05

I I


BLOQ.

167

NEW

BLDG.

i SHALLOWS

EXCAVATION

LEGEND CATCH O BASIN

sj t FT

LAB SOIL SAMPLE NO. AND DEPTH BELOW AIRCRAFT APRON GRADE

TEST PIT - DARKENED WHERE FIELD SOIL PID READINGS ABOVE BACKGROUND

IZZEA STREET

PIT WALL SAMPLING • DARKENED WHERE FIELD SOIL PID READINGS ABOVE BACKGROUND

10-100 RANGE (In ppm) OF PID READINGS

BKGD BACKGROUND

BLDG. 168

BLDG. 166

A 1111 ABB Environmental TEST PIT LOCATIONS PIV Services. Inc. AND FIELD PID RESULTS

MEAMOWNUVEM

HORIZONTAL DISTANCE (FEET) FS-25 •̂••••••E^̂ ^̂ g MSTAUATION RESTORATION rflOCMAM DECISION FIGURE 3F————""""""I— MASSACHUSETTS MLITARV RESERVATION o so 100 DOCUMENT

6020 BO

I

LEGEND

SOIL SAMPLE SEGMENT EQUAL TO APPROX 100 CUBIC YARDS

9 • 40 PIO READING OF FRESHLY

EXPOSED SOIL (p|>m)

NUMBER IN BOX IS FIELD 12 SAMPLE DESIGNATION

k 1111 ABB Environmental FIELD SAMPLING AND PIO COLUMNS J"tlPIP Services. Inc. RESULTS OF EXCAVATED SOIL

MCA MOWN tOVtM

SCALE IN FEET FS-2S MSTALLATION RESTORATION PROGRAM DECISION FIGURE 4MASSACHUSETTS MUTARr RESERVATION

DOCUMENT 0 125 250

I f

7030-05

SUMMARY OF DETAILED LAB ANALYSES (̂ ..inm ,̂̂ ,)

• I » • ft I •

LEGEND

SOIL STOCKPILED SEGMENT EQUAL TO APPROX. 100 CUBIC YARDS

140 = LAB VALUE OF TPH (mg/kg Dry Weight)

BEDL = REVISED DETECTION LIMIT BASED ON BLANK EVALUATION (SEE TABLE 2)

NUMBER IN BOX IS SAMPLE DESIGNATION

NOTE: NO TARGETED VOC» OR SVOCs WERE DETECTED IN THESE SAMPLES.

INORGANICS ALUMINUM ARSENIC CHROMIUM LEAD

VOLATILES NO. TICS TOTAL

SEMIVOLATILES NO. TICS TOTAL

4

3890 3.4 4.7 146

7 390

16 2100

ABB Environmental Services, Inc.

INSTALLATION RESTORATION PROGRAM MASSACHUSETTS MILITARY RESERVATION

SAMPLE NUMBER

8 12 16

4760 3750 2590 3.4 3.1 2.9 6.7 4.7 15 4.7 3.6 3.9

9 7 8 0.6 11.7 13.5

14 1 12 109 0.2 6.1

ANALYTICAL RESULTS FOR EXCAVATED SOIL

FS-25 DECISION FIGURE 5

DOCUMENT

7030-05

ALUMINUM ARSENIC CHROMIUM LEAD 1.1 DCE 8 TICs. TOT. V 11 TlC«. TOT. SV

EDGE OF AIRCRAFT APRON ALUMINUM ARSENIC CHROMIUM LEAD VANADIUM 2 TICs. TOT. V 8 TICs. TOT. SV

ALUMINUM ARSENIC CHROMIUM LEAD VANADIUM 4 TICs. TOT. V

ALUMINUM CHROMIUM 1 TIC. TOT. V

ALUMINUM CHROMIUM

ALUMINUM CHROMIUM 1 TIC. TOT. SV

ALUMINUM CHROMIUM 2 TICs. TOT. V

IBii 8 V TC747N

ALUMINUM 635 CHROMIUM 3.1 1 TIC. TOT. V .05

ALUMINUM CHROMIUM

NOTES:

LEGEND

TEST BORtNQ

MONITORING WELL

4' 1. ALL CONCENTRATIONS (In ppm).

2. NUMBER ON BOX LEADER IS DEPTH OF SAMPLE BELOW AIRCRAFT APRON GRADE

V = VOLATILE ORGANIC COMPOUNDS SV = SEMIVOLATH.E ORGANIC COMPOUNDS

TEST PIT BLDQ. 168

BLDQ. 166

J|IIII ABB Environmental 1 JP1IPIP Services, Inc.

AWAinoWNMViM

SOIL ANALYTICAL RESULTS FOR TEST PITS AND BORINGS

too

•4STAU.ATION REtTOAATKM PROOMAM MASSACHUSETTS IM.ITARY RESERVATION

FS 25 DECISION

DOCUMENT FIGURE 6

60?0 BO


LEGEND

TEST BORING

MONITORING WELL

TEST PIT

PIT WALL SAMPLING BLDG. 168

BLDG. 166

Jl II |I ABB Environmental ftlPIP Sen/ices. Inc. «UA MOWN Win

ORIENTATION OF

PROFILES A-A1 AND B-B1

100

MSTALLATKM RESTORATION PROGRAM MASSACHUSETTS MUTARV RESERVATION

FS 25 DECISION

DOCUMENT FIGURE 7

00

A /k WE! iT EA ST

WATENLME

| - 110 TB-5 FLIGHTLINE GRADE TP-t TP-9

—0

"\ \l™--^-*f-* LEGEND •I 20-30 °-2 IS A A A A / 1 T / 1 0" 1 00 20-50 7

u 100 TPs \ ~ y \s*y v .*r 0-250 \̂ TB*V

*•D-'10- x^ »̂-. ' ' ^^ * 30 ALUMINUM Moa • 27 •5

SSS5.U 1] *U«NUM «0 L£AO 1.1 ARSENIC U VCHROMUU 1.1 1 TIC. TOT. V .09 *|'«- £. V

i 9Z SV

§ • 70 >. MSLg

S X 40K

ft

• 60

50

ALUMINUM I1TO

ITC.TOT.BV .!• - 50

tl/M Z.

•0

- 40

mti1 ABB Environmental^tifj • Services inc.p==5i.=̂ ==?5=̂

MSTALLAT) VERTICAL EXAGGERATION IX MASSACMUft rrr» MUTARV RESERVATMM

TESTPIT

TEST BORMG

SOC SAMPLE (NO NUMBER MXCATES BACKCROUND)

ANALYTICAL SOL SAMPLE (CONCCNTRATIOHS In ««/k»)

GROUND SLWFACE AT START OF TESTMO.

WATER TABLE

VOLATLE COMPOUNDS

SEMWOLATLE COMPOUNDS

MEAN SEA LEVEL

PROFILE A-A' THROUGH EXCAVATION SITE

DEMENT FIGURE 8

http:ITC.TOT.BV

B SOUTH

MW-1 B NORTH

uw -110

10

20-

ALUUINUU CHBOUUU ITCl. TOT. V 1TC.TOT.SV

f 10 FEET SOL STAMMG. AND FUEL OOOA

-100

- 90

LEGEND

TP TEST PIT

TB TEST BORING

, PO READING ON 1 5 SOL SAMPLE (NO NUMBER

MNCATES BACKGROUND)

S 3

30-ALUUINUU CHBOMIUU

HI 2.7

_ t0 —

«

UJ

- 70 Z

_ "

.̂

V

SV

ANALYTICAL SOL SAMPLE (CONCENTRATIONS In «a/kg)

WATEB TABLE

VOLATLE COMPOUNDS

SEMIVOLATLE COMPOUNDS

so

ALUMNUUCHROUUUt TC. TOT. SV

1270 IM

O.lt -

pS a

so >"

MSL MEAN SEA LEVEL

•0 •= *"»'" • so

= • 40 70

L 30

0

SCALE M FEET

M 10

VERTICAL EXAGGERATION 4X

JL Illl ABB Environmental *Xff££ Services Inc.

MSTALLATON RESTORATION PROGRAM MASSACHUSETTS I.UTARV RESERVATION

PROFILE B 6

THROUGH EXCAVATION SITE

EDGE OF AIRCRAFT APRON X —X— X— X — X

T Fence

GS910642

Excavated Building 167 Area

TB-5

IZZEA STREET

LEGEND MW-2

Test Pit for TCLP Samples (June 1992)

-f

rj~l

Test Boring

Test Pit Building ^ Building ^

-A Monitoring Well

^ Pit Wall Sampling

SCALE IN FEET

ABB Environmental JPlklFIP Services, Inc. ASEA BROWN BOVEfV

INSTALLATION RESTORATION PROGRAM MASSACHUSETTS MILITARY RESERVATION

EXCAVATION SITE MAP

FS-25 DECISION

DOCUMENT FIGURE 10

9302018D (a)

I t

LEGEND

so -PID READING OF FRESHLY EXPOSED SOIL (ppm) Column*

NUMBER IN BOX IS FIELD SAMPLE DESIGNATION FROM 1989 SAMPLING

SOIL SAMPLE SEGMENT EQUAL TO APPROXIMATELY 100 CUBIC YARDS

TP-1 = LOCATION OF JUNE 1991 TCLP SAMPLING

ABB Environmental Services, Inc. FIELD SAMPLING FOR TCLP

ASEA BROWN BOVERI

FS-25 INSTALLATION RESTORATION PROGRAM DECISION FIGURE 11 MASSACHUSETTS MIUTARY RESERVATION

DOCUMENT

9302018D/7030-05

APPENDIX n

TABLE'S

WOHW237080


LIST OF TABLES

Table Title Page No.

Summary of Soil Boring Sampling and Related Sample Observations B-l

Summary of Analytical Data for Stockpiled Soils B-2

Summary of Soil Analytical Data for Test Borings and Test Pits B-3

Summary of Risk From Exposure to Soils B-4

W0109237.080 7030-05

TABLE 1 SUMMARY OF SOIL BORING SAMPLING AND RELATED

SAMPLE OBSERVATIONS

FS-25 DECISION DOCUMENT MASSACHUSETTS MILITARY RESERVATION

SPLIT-SPOON DEPTHS DEPTH OF SAMPLING OF LAB

BORING BORING INTERVAL SAMPLES PID NUMBER (Feet bgs) (Feet bgs) (Feet bgs) RESPONSE

TB-1 61 every 5 ft to 61 ft 54-56 bkgd

TB-2 51 continuous to 20; every 10-12 30-bkgd 5ft,24to51 44-46 bkgd

TB-3 16 continuous to 16 ft 8-10 bkgd 14-16*

TB-4 20 continuous to 20 ft 4-6« bkgd 18-20

TB-5 20 continuous to 20 ft 10-12* bkgd 18-20

NOTES:

* Sampled for TPH analysis only. bkgd — background bgs - below ground surface ft - feet PID - field photoionization detector

TABLI.wkl B-l

TABLE 2 SUMMARY OF ANALYTICAL DATA FOR STOCKPILED SOILS

ND - Not Detected

CONC - concentration

mg/kg - milligrams per kilogram

TPH - total petroleum hydrocarbons VOC - volatile organic compound

TIC - tentatively identified compound

FIELD LABORATORY TARGETED

DESIGNATION SAMPLE ID1 TPH VOC

S-l 94SSXX1XXXXXXX 140

S-2 94SSXX2XXXXXXX 340

S-3 94SSXX3XXXXXXX (62]«

S-4 94SSXX4XJOOCXXX 43OO ND

S-5 94SSXXSXXXXXXX [60]

S-6 94SSXX6XXXXXXX [91]

S-7 94SSXX7XXXXXXX ND

S-8 94SSXX8XXXXXXX [28] ND

S-9 94SSXX9XXXXXXX [9.7]

S-10 94SSXX10XXXXXX 138) S-ll 94SSXX11XXXXXX [54]

S-12 94SSXX12XXXXXX [JO] ND

S-13 94SSXX13XXXXXX [9.7]

S-14 94SSXX14XXXXXX 130

S-15 94SSXM5XXXXXX 190

S-16 94SSXM6XXXXXX 120 ND

S-17 94SSXM7XXXXXX [46]

S-18 94SSXX18XXXXXX I")

S-W 94SSXX19XXXXXX 100

S-20 94SSXX20XXXXXX ND

S-21 94SSXX21XXXXXX [34]

S-22 94SSXX22XXXXXX [44]

S-23 94SSXX23XXXXXX I") S-24 94SSXX24XXXXXX [18]

CRQL

AVE1 230s

AVE MMR UNSAT. SOILS'

NOTES 1 Sample locution identifier used in Appendix C of Technical Report 1 Awnges computed using one-hilf the CRQL for non-detecfe (ND)

'EC Jordan Co.. 1990

'[ ] revised detection limitbised on Mankevaluttion

' average TPH computed using one-half the bracketted values

All concentrations in mg/kg


ORGANIC PARAMETERS

VOLATILE TJCi SEMTVOLATTLETia

TOTAL TOTAL

NUMBER CONG. NUMBER CONG. ALUMINUM

7 39.0 16 2100.0 3.890

9 0.6 14 10.9 4.760

7 11.7 1 0.2 3.750

8 13.5 12 6.1 2^90

40

3750

599

INOROANIC CONSTITUENTS

ARSENIC CHROMIUM LEAD

3.4 4.7 14.6

3.4 6.7 4.7

3.1 4.7 3.6

2.9 15 3.9

2.0 ZO 1.0

6.7 3.2 7.8

0.07 0.65 0.77

VANADIUM

ND

ND

ND

ND

10

5.0

1.65

CRQL - Contract Required Quantitation Limit

Blank in column indicates not analysd.

TABLE 3 SUMMARY OF SOIL ANALYTICAL DATA FOR TEST BORINGS AND TEST PITS


VOLATILE TIC* SEMIVOLATTLE TIC* INORGANIC CONSTITUENTS

BORING LABORATORY DEPTH1 TARGETED TOTAL TOTAL

NCX SAMPLE ID1 (FEET) TPH VOC NUMBER CONG NUMBER OONC ALUMINUM ARSENIC CHROMIUM LEAD VANADIUM

TB-l 94BSXX1XX54XXX 54 ND ND ND ND 928 ND 3.1 ND ND

TB-2 94BSXX2XX21XXX 21(10) ND ND ND ND 861 ND 2.7 ND ND

TB-2 94BSXXZXX55XXX 53(44) ND ND ND t 0.16 1270 ND 2.6 ND ND

TB-3 94BSXX3XX8XXXX 8 ND ND 1 0.036 ND 925 ND ND ND ND

TB-3 94BSXX3XX14XXX 14 ND

TB-4 94BSXX4XX4XXXX 4 ND

TB-4 94BSXX4XX18XXX IS ND ND t 0.06 ND 1310 ND 4.1 ND ND

TB-3 94BSXX5XX10XXX 10 ND

TB-S 94BSXX5XX18XXX 18 ND ND 1 0.046 ND 635 ND 3.1 ND ND

TP-2 94PSXX2XX2XXXX 2 ND ND 8 0.18 1 0.16 2420 ND 3.6 3.4 ND

TP-3 94PSXX3XX3XXXX «(3) ND ND 2 0.02 ND 27^0 ND 3.5 ND ND

TP-4 94PSXX4XX7XXXX 7(3) ND ND 4 0.04 ND 8280 6.6 11.6 6.3 14.5

TP-4 94PSXX4XX6XXXX «

TABLE 4 SUMMARY OF RISK FROM EXPOSURE TO SOILS


BxrosuRB ROUTE DERMAL CONTACT AND INGBSTION INHALATION LOCATION CONCENTRATION CARCINOGENIC NONCARCINOGENIC CARCINOGENIC NONCARCINOGENIC

ivijtrWAY MAXIMUM

AVERAGE

4B-10

4B-10

0.002

0.0005

•

•

1.1 (3.4*)

0.06

Gd EXC^^ MAXIMUM

AVERAGE

1E-9

6E-10

0.0006

0.0003

1E-8

4E-9

0.003

0.0009

TOTAL CARCINOGENIC NONCARCINOGENIC

SITE RISK MAXIMUM 5.0E-09 1.1 (3.4*)

AVERAGE l.OE-08 0.06

* No volatile carcinogenic compound! to pose inhalation riik.

* Indicates revised riik calculated by uting maximum TPH concentration and reviled respiration rate.

AI»I*KM)1X (

ADDITIONAL. ANALYTICAL RESULTS

URON CONSULTING CO. tAftqv AGAHIOIAN. Ph.0., DIRECTOR analytical services -r\

P.O. BOX 863, ORANGE CT. 06477

July 12, 1991

Mr. Carl Philips

«0tis Air National Guard Installation Restoration Program

NGB/DEVR/OLO, Bldg 868

-Otis ANG Base, MA 02542

—RE: Analysis of 2 soils WPO# IRP Site FS-25 BC# 82012

The samples were extracted by the TCLP procedure and analyzed for the compounds listed on the following pages in ppm. I Please contact us if you have any questions or wish more information.

David-Ditta, Chemist Environmental/Technical Manager

,1H« r»Bon it •ubmitiM wHh tit* unomtindlftg UMl H K not to b« r»o«oduo«d for »*r«rt Wng «r oth«r puipo*«i o*«r our tignnura •Mhout «*i pwnla i from in. Wtoonet*ee«ninyitMfiiyeene*rnii«tn«uttoith«MitMiii».

NOT RESPONSIBLE FOR SAMPLES LEFT OVER 30 DAYS AFTER RECEIPT OF REPORT.

Connecticut Public Hearth Laboratory No. 0440 EPA Number CT015 American mistrial Mygien? Association Laboratory No. 410 l

Toxicity Characteristic

Leachate Procedure (TCLP)

BC# 82012 PO* IRP Site FS-25 Results in mg/1 (ppm)

Contaminant

Arsenic Barium Benzene Cadmium Carbon tetrachloride Chlordane Chlorobenzene Chloroform Chromium o-Cresol ra+p-Cresol 2,4D 1,4-Dichlorobenzene 1,2-Dichloroethane 1/1-Dichloroethylene 2,4-Dinitrotoluene Endrin Heptachlor Heptachlor Epoxide Hexachlorobenzene Hexachlorobutadiene

910641

ND

Toxicity Characteristic Leachate Procedure (TCLP)

Page 2 BC* 82012 P0# IRP Site FS-25 Results are in mg/1 (ppm)

910641

Contaminant ^

Hexachloroethane ND



BCt 82012 PO* IRP Site FS-25 Results in mg/1 (ppm)

910642

Contaminant

Arsenic ND


Page 2 BC# 82012 P0# IRP Site FS-25 Results are in mg/1 (ppm)

Contaminant

Hexachloroethane Lead Lindane Mercury Methoxychlor Methyl ethyl ketone Nitrobenzene Pentachlorophenol Pyridine Selenium Silver Tetrachloroethylene Toxaphene Trichlorethylene

2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex) Vinyl Chloride

Butanol Acetone Methanol Methylene Chloride Carbon Disulfide

Xylenes Toluene

910642

ND

BARON CONSULTING CO. HARRY AGAHIGIAN. PhJ3., DIRECTOR analytical services

P.O. BOX 663, ORANGE CT. 06477

June 19, 1991

Mr. Richard Dugan Env. Coordinator Otis Air National Guard 102 PIW/DEEV Bldg. 971 Otis Angb, MA. 02542-5001

RE: Analysis of 10 soils 6/5/91 P0# IRP Sites BC# 81482

The sample was extracted as per the TCLP procedure. The extract was then analyzed for the compunds on the following pages. The results are in ppm.

Please contact us if you have any questions or wish more information.

Michele Oltra MO/ac Chemist

vv

This rwort n tubmnMa w.in («• unatnifnaing mil it it not to be r*oreduc*d lor »Ov»rti»ing or otrwr purpotM o««r our signature without not*** written pvrmtuion from us. Wo do not •peoot sny uatMlity concerning the us* ot th%s* results.

NOT RESPONSIBLE FOR SAMPLES LEFT OVER 30 DAYS AFTER RECEIPT OF REPORT

r-,F.nor.,c,J, D.jhiir woglth '_25oratorv No 0440 EPA Number CT015

Toxicity Characteristic Leachate Procedure

BC# 81482 Results in mg/1 (ppm) °\

910536

Contaminant

Arsenic ND


Page 2 BC# 81482 Results are in mg/1 (ppm)

Contaminant

Hexachloroethane

Lead

Lindane

Mercury

Methoxychlor

Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine Selenium Silver Tetrachloroethylene Toxaphene Trichlorethylene

2,4/5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex)

Vinyl Chloride

910536

ND


BC# 81482 1 ̂ 10 Results in mg/1 (ppm)

910537

Contaminant

Arsenic ND

BC# 81482 Results are in mg/1 (ppm)

Contaminant

Hexachloroethane Lead

Lindane Mercury

Methoxychlor Methyl ethyl ketone Nitrobenzene Pentachlorophenol

Pyridine Selenium Silver Tetrachloroethylene

Toxaphene Trichlorethylene 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex)

Vinyl Chloride


910537

ND


BC# 81482 Results in mg/1 (ppm)

910528

Contaminant

Arsenic ND



Contaminant

Hexachloroethane Lead Lindane Mercury Methoxychlor Methyl ethyl ketone Nitrobenzene

Pentachlorophenol Pyridine Selenium Silver Tetrachloroethylene Toxaphene Trichlorethylene 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex) Vinyl Chloride

910528

ND



910529 Contaminant

Arsenic ND


Contaminant

Hexachloroethane Lead Lindane Mercury Methoxychlor Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine Selenium

Silver Tetrachloroethylene

Toxaphene

Trichlorethylene 2,4,5-Trichlorophenol

2,4,6-Trichlorophenol

2,4,5-TP (Silvex)

Vinyl Chloride


910529

ND


BC# 81482 prr

Results in mg/1 (ppm) PS--25 $01L

910530 Contaminant

Arsenic ND


Contaminant

Hexachloroethane

Lead Lindane Mercury

Methoxychlor Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine Selenium Silver

Tetrachloroethylene Toxaphene Trichlorethylene 2,4,5-Trichlorophenol

2,4,6-Trichlorophenol

2,4,5-TP (Silvex)

Vinyl Chloride


910530

ND


BC# 81482 PIT Results in mg/1 (ppm)

Regulatory

Level (mg/1)

5.0

100.0

0 .5

1.0

0.5

0 .03

100.0

6 .0

5.0

200.0

200.0

10.0

7.5

0.5

0 .7

0.13

0 .02

0 .008

0 .008

0.13

0.5

Contaminant

Arsenic

Barium

Benzene

Cadmium

Carbon tetrachloride

Chlordane

Chlorobenzene '

Chloroform

Chromium

o-Cresol

m+p-Cresol

2,4D

1,4-Dichlorobenzene 1,2-Dichloroethane

1,1-Dichloroethylene

2,4-Dinitr.otoluene

Endrin

Heptachlor

Heptachlor Epoxide

Hexachlorobenzene

Hexachlorobutadiene

910531

ND



Contaminant

910531 Regulatory^

Level (mg/1

Hexachloroethane ND



910532

Contaminant

Arsenic ND


Contaminant

Hexachloroethane

Lead

Lindane Mercury Methoxychlor Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine

Selenium Silver Tetrachloroethylene

Toxaphene Trichlorethylene 2,4,5-Trichlorophenol

2,4,6-Trichlorophenol 2,4,5-TP (Silvex)

Vinyl Chloride


910532

ND


BCt 81482 Results in mg/1 (ppm)

Regulatory

Level (mg/1)

5.0

100.0

0.5

1.0

0.5

0.03

100.0

6.0

5.0

200.0

200 .0

10.0

7.5 0.5

0 .7

0.13

0 .02

0 .008

0 .008

0.13

0.5

Contaminant

Arsenic

Barium Benzene

Cadmium

Carbon tetrachloride

Chlordane

Chlorobenzene Chloroform Chromium

o-Cresol m+p-Cresol 2,4D

1,4-Dichlorobenzene 1,2-Dichloroethane

1,1-Dichloroethylene 2,4-Dinitrotoluene

Endrin

Heptachlor Heptachlor Epoxide

Hexachlorobenzene Hexachlorobutadiene

910533

ND


Contaminant

Hexachloroethane Lead Lindane Mercury Methoxychlor Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine Selenium Silver Tetrachloroethylene Toxaphene Trichlorethylene 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex)

Vinyl Chloride


910533

ND

Toxicity Characteristic Leachate Procedure (TCLP.'


910534

Contaminant

Arsenic ND


Contaminant

Hexachloroethane Lead

Lindane Mercury Methoxychlor Methyl ethyl ketone

Nitrobenzene Pentachlorophenol Pyridine

Selenium Silver Tetrachloroethylene Toxaphene Trichlorethylene 2,4,5-Trichlorophenol

2,4,6-Trichlorophenol 2,4,5-TP (Silvex) Vinyl Chloride



910534

ND


BC# 81482 Ma. Results in mg/1 (ppm)

910535

Contaminant

Arsenic ND



910535 Regulatory i

Contaminant Level (mg/1)

Hexachloroethane ND

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RESPONSIVHNUSS SUMMARY

DEPARTMENT OF THE AIR FORCE INSTALLATION RESTORATION PROGRAM (ANG)

OTIS AIR NATIONAL GUARD BASE, MA 02542-5028

7 Aug 1995

ANG/CEVRO 322 East Inner Road, Box 41 Otis ANG Base, MA 02542-5028

Mr. Paul Marchessault U.S. Environmental Protection Agency HAN/CAN1 JFK Federal Building Boston, MA 02203

Dear Mr. Marchessault"

Please be advised that the National Guard Bureau (NGB) did not receive any comments on the document entitled "Final Decision Document Fuel Spill 25 (FS-25)" dated December 1993, during the public comment period held from June 26 to July 25, 1995.

It is requested that Ms. Sanderson sign her name where indicated on page 6-2 of this document, make a copy for your files, and return the original to this office. The NGB will then obtain Mr. Crombie's signature as required on page 6-3. Upon receipt of these signatures, the document will be sent to the contractor for finalization.

If you have any further questions, please call me at (508) 968-4670.

Sincerely

MICHAEL E. MINIOR Program Manager

cc: M. Carl Wheeler Walter Zorn Deborah Newberry

BACK TO AR INDEXFINAL DECISION DOCUMENT FOR FUEL SPILL SITE 25 EXCAVATION SITETABLE OF CONTENTS1 - INTRODUCTION2 - STUDY AREA HISTORY AND DESCRIPTION3 - STUDY AREA INVESTIGATIONS4 - FINDINGS OF INVESTIGATIONS5 - CONCLUSIONS6 - DECISIONGLOSSARY OF ACRONYMS AND ABBREVIATIONSREFERENCESAPPENDIX A: FIGURESAPPENDIX B: TABLESAPPENDIX C: ADDITIONAL ANALYTICAL RESULTSAPPENDIX D: RESPONSIVENESS SUMMARY

Massachusetts Military ReservationOak Ridge Tennesse, 37831-760e 6 Managed by: LOCKHEED MARTIN...

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