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<STMILLER, INC Environmental Services ./***"%, Ground Water Engineering Hydrocarbon Remediation Education March 2, 1993 Ms. Caroline Kwan, Project Manager USEPA Region E 26 Federal Plaza, Room 737 New York, New York 10278 Re: Sampling Procedures and Waste-Classification Analytical Results of Drilling Cuttings Tutu Service Station Investigation St. Thomas, U.S. Virgin Islands Dear Ms. Kwan: On behalf of Ana Gloria Ramos, Designated Coordinator for the Tutu Environmental Investigation Committee (TEIC), Geraghty & Miller, Inc. has prepared this submittal regarding the above-referenced topic. Attached are the analytical results of the waste-classification samples collected on September 10, 1992 from the drilling material from the Tutu Service Station Investigation at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. The analytical parameters included USEPA Toxicity Characteristic Leachate Procedure (TCLP) and Resource Conservation and Recovery Act (RCRA) waste characteristic parameters (e.g., ignitability and corrosivity). Three composite samples (see Table 1; DS-1, DS-2, DS-3) were taken of the drilling material with each sample representing one-third of the total material (approximately 100 drums). Each sample was retrieved with a stainless steel spoon and placed in a stainless steel bowl. After collecting a representative portion, the material was mixed in a stainless steel bowl and immediately transferred to the sample containers. A field blank sample (FB091092) was collected by pouring laboratory-supplied deionized water over the decontaminated stainless steel bowl and spoon (prior to sampling the drilling material) so that the rinsate flowed into the sample containers. A laboratory-supplied trip blank (TB091092) was sent along with the samples. TUT O06 1462 201 West Passaic Street, 3rd Floor • Rochelle Park, New Jersey 07662 -(201) 909-0700 -FAX (201) 909-0567/0568 *64785* 64785 GERAGHTY & MILLER. INC All analytical results were below detection limits with the exception of barium (see Tables 2 through 7). The highest barium concentration reported was 0.24 parts per million (ppm) in sample DS-1, which is well below the TCLP regulatory limit of 100 ppm (40 CFR Part 261). No other TCLP parameters were detected. The results for other waste characteristic parameters were also indicative of non-hazardous material. The material was non-ignitable and the corrosivity was within the non-hazardous range of between 2 to 12.5 pH units. Total cyanide and total sulfide were below the method detection limits. Therefore, the drilling material is non- hazardous and should be disposed accordingly. This material should be disposed as a non-hazardous solid waste. The TEIC will coordinate the proper disposal of this non-hazardous solid waste with the USEPA and Virgin Islands Department of Planning and Natural Resources. Your assistance would be greatly appreciated. If you have any questions or require additional information, please call. Sincerely, GERAGHTY & MILLER, INC. c: Ana Gloria Ramos, TEIC Leonard Reed, DPNR Clifford Crooke, DPNR Enclosures PR01301-wp3/011393.hr/lcb Clinton Moffatt Staff Scientist Thomas V. Danahy g "Senior ScientiSt/Pfoect Manager Daniel Nachman Vice President/Project Officer TUT 006 1463 Table 1. Composite Sample Locations and Identifications, Tutu Service Station Ivestigation, St. Thomas, U.S. Virgin Islands. Composite Sample Idenfication DS-1 DS-2 DS-3 MW-3 MW-4 MW-4D MW-5 MW-9 MW-9S B-l B-2 B-4 B-5 B-6 Drilling Locations MW-2 MW-7 MW-8 MW-11D MW-12D MW-13D MW-14 B-10 B-ll B-12 B-13 MW-1 MW-1D MW-10 MW-10D MW-6 MW-6R MW-6D PR01301.Tl/012193.wk3 GERAGHTY & MILLER. INC. TUT 006 1464 Table 2. Concentrations of Volatile Organic Compounds in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Analyte Benzene Carbon tetrachloride Chlorobenzene Chloroform 1,2-Dichloroethane 1,1-Dichloroethenc 2-Butanone (MEK) Telrachloroethene Trichloroethene Vinyl chloride Sample ID: DS-I Date: 10-Sep-92 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.05 U 0.025 U 0.025 U 0.05 U DS-2 10-Sep-92 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.05 U 0.025 U 0.025 U 0.05 U DS-3 10-Scp-92 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 0.05 U 0.025 U 0.025 U 0.05 U Field Blank 10-Sep-92 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.01 U 0.005 U 0.005 U 0.01 U Trip Blank IO-Scp-92 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.005 U 0.01 U 0.005 U 0.005 U 0.01 U Analyle concentrations in milligrams per liter (parts per million [ppm]). Analyses were performed by Enseco-East of Somerset, New Jersey, using USEPA Method 8240. U Compound or element analyzed for, but not detected at the corresponding reporting limit. i—H O 0- 0" UI GERAGHTY & MILLER, INC. Table 3. Concentrations of Base Neutral and Acid Extractable Organic Compounds in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: DS-1 DS-2 DS-3 Field Blank Analyte Date: 10-Scp-92 lO-Sep-92 lO-Sep-92 lO-Sep-92 m & p-Cresol(s) o-Cresol 1 ,4-Dichlorobenzene 2,4-Dinitrotoluene Hcxachlorobenzene llexachlorobutadiene Hexachloroethane Nitrobenzene Pcntachlorophenol Pyridine 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 0.05 U 0.05 U 0.05 U O.OSU 0.05 U 0.05 U O.OSU O.OSU 0.25 U 0.1 U 0.25 U O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU 0.25 U 0.1 U 0.25 U O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU O.OSU 0.25 U 0.1 U 0.25 U O.OSU 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U 0.01 U O.OSU 0.02 U O.OSU 0.01 U Analyte concentrations in milligrams per liter (parts per million [ppm]); Analyses were performed by Enseco-East of Somerset, New Jersey, using USEPA Method 8270. U Compound or element analyzed for, but not detected at the corresponding reporting limit. C H- GERAGHTY & MILLER, INC. Table 4. Concentrations of Pesticides in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: Analyle Dale: gamma-BHC (Lindane) Clilordane Endrin Hepluchlor (and its epoxidc) Methoxychlor Toxaphene DS-1 10-Sep-92 0.0005 U 0.005 U 0.001 U 0.0005 U 0.005 U 0.05 U DS-2 10-Sep-92 0.0005 U 0.005 U 0.001 U 0.0005 U 0.005 U 0.05 U DS-3 10-Sep-92 0.0005 U 0.005 U 0.001 U 0.0005 U 0.005 U 0.05 U Field Blank 10-Sep-92 0.0005 U 0.005 U 0.001 U 0.0005 U 0.005 U 0.05 U Analyle concentrations in milligrams per liter (parts per million [ppm]). Analyses were performed by Enseco-East of Somerset, New Jersey, using USEPA Method 8080. U Compound or element analyzed for, but not detected at the corresponding reporting limit. -HiC —! oo 0- 0" GERAGHTY & MILLER, INC. Table 5. Concentrations of Herbicides in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: DS-1 DS-2 DS-3 Analyte Date: 10-Sep-92 10-Sep-92 10-Sep-92 2,4-D 0.005 U 0.005 U 0.005 U 2,4,5-TP(Silvex) 0.001 U 0.001 U 0.001 U Analyte concentrations in milligrams per liter (parts per million [ppm]). Analyses were performed by Enseco-East of Somerset, New Jersey, using USEPA Method 8150. U Compound or element analyzed for, but not detected at the corresponding reporting limit. Oo H- f"° GERAGHTY6? MILLER, INC. Table 6. Concentrations of Metals in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: Analyte Date: Arsenic Barium Cadmium Chromium Lead Mercury Selenium Silver Analyte concentrations in milligrams Analyses were performed by Enseco DS-I DS-2 DS-3 10-Sep-92 10-Sep-92 lO-Sep-92 0.2 U 0.2 U 0.2 U 0.24 0.2 0.22 0.01 U 0.01 U 0.01 U 0.02 U 0.02 U 0.02 U 0.1 U 0.1 U 0.1 U 0.0002 U 0.0002 U 0.0002 U 0.4 U 0.4 U 0.4 U 0.02 U 0.02 U 0.02 U per liter (parts per million [ppm]). -East of Somerset, New Jersey, using Field Blank lO-Sep-92 0.1 U 0.01 U 0.005 U 0.01 U 0.05 U 0.0002 U 0.2 U 0.01 U standard U.S. Environmental Protection Agency methodology. U Compound or element analyzed for, but not detected at the corresponding reporting limit. H C O 0- GERAGHTY & MILLER, INC. Table 7. Concentrations of Indicator Parameters in Waste-Classification Samples Collected in September 1992 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Analyu Sample ID: DS-1 DS-2 DS-3 Uniti Date: 10-Sep-92 10-Sep-92 lO-Sep-92 Ignitability Sulfide. Total Cyanide, Total Corrosivity DEOF. mg/kg mg/kg units >200 0.55 U 0.55 U 11.2 >200 0.56 U 0.56 U 10.4 >200 0.57 U 0.57 U 11.6 Analyte concentrations in milligrams per kilogram (parts per million [ppm]). DEGT. Degrees in Fahrenheit, units Standard pH or color units. Analyses were performed by Enseco-East of Somerset, New'Jersey, using standard U.S. Environmental Protection Agency methodology. U Compound or element analyzed for, but not detected at the corresponding reporting limit. H r- o 5- H- O GERAGHTY & MILLER, INC.