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& MILLER, INC. Environmental Services Ground Water Engineering Hvdrocartxm Remediation Education July 21, 1994 Caroline Kwan U.S. Environmental Protection Agency Region II 26 Federal Plaza, Room 737 New York, New York 10278 VIA EXPRESS MAIL Re: Draft RI Report, Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Dear Ms. Kwan: Geraghty & Miller, Inc., on behalf of the Tutu Environmental Investigation Committee (TEIC), has prepared the following for your review: • Validated soil quality data (see Table 1) for seven Phase II samples plus QA/QC. • Temporary Phase II Base Map (see Figure 1-3). Please contact us if you have any questions. Sincerely, MILLER, INC. Thomas V. L)anany Senior Scientist/Project M; Daniel A. Nachman Vice President/Project Officer Enclosure Paul Ryan, Texaco, Inc./EHS Tim Knutson, Esq., Texaco Legal Chris Gibson, Esq., Archer & Greiner PROOI3.—O72I94.IU TUT OO6 1O28 201 West Passaic Street, 3rd Floor • Rochelle Park, New Jersey 07662 • (201) 909-0700 • FAX (201) 909-0567/0568 *64677* 64677 Table 1. Concentrations of Volatile Organic Compounds in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16 FR MW-17 MW-18 MW-19 MW-24 MW-25 (2.0-3.5') (4.0-6.0') (0-2.0') (0-2.0') (6.0-8.o') (12.0- (4.0-6.0") (4.5-6.5') p2.0- 14.0') 4.0') Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 28-Mar-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Chloromethane 11 U 12 U 11 UJ 11 UJ llU 12 UJ ll UJ 11 U 12 U Bromomethane ll U 12 U 11 U ll U ll U 12 UJ llU 11 U 12 U Vinyl chloride ll U 12 U 11 U ll U llU 12 UJ llU llU 12 U Chloroethane 11 U 12U ll U 11 U 11 U 12 UJ llU llU 12 U Methylene chloride ll U 12U ll U I J ll U 12 UJ ll U 2J 3J Acetone 11 UJ 4J ll UJ 11 UJ 3J SOBJ 21 UJ SJ 33 I Carbon disulfide 11 U 12U 11 U 11 U 11 U 12 UJ 11U 11 U 12 U I , 1-Dichloroethene 11 U 12 U II U 11U 11 U 12 UJ llU llU 12 U I , 1-Dichloroethane II U 12U 11 U 11U 11 U 12 UJ llU II U 12 U 1,2-Dichloroethene (cis/trans) ll U 12 U 11 U llU 2J 12 UJ llU 11 U 12 U Chloroform 11 U 12U 11 U 11 U llU 12 UJ 11 U 11 U 12 U 1,2-Dichloroethane 11 U i2U 11 U 11 U 11 U 12 UJ 11 U II U 12 U 2-Butanone 11 U 12 U 11 UJ 11 UJ ll U 13 BJ 11 UJ 11 U 12 U I, 1, I-Trichloroethane 11 U 12 U 11 U llU 11 U 12 UJ llU ll U 12U Carbon tetrachloride ll U 12 U ll U llU ll U 12 UJ llU 11 U 12 U Bromodichloromethane 11 U 12 U 11 U 11 U 11 U 12 UJ 11 U 11 U 12 U 1,2-Dichloro(oropane 11 U 12 U 11 U 11 U 11 U 12 UJ llU llU 12 U cis-1,3-Dich oropropene llU 12 U llU 11 U 11 U 12 UJ 11 U llU 12 U T richloroethene II U 12 U I J 11 U 11 U 12UJ llU ll U 12 U Dibromochloromethane 11 U 12 U llU II U llU 12UJ IIU II U 12 U I, 1,2-Trichloroethane II U 12U 11 U llU 11 U 12 UJ 11 U II U 12 U Benzene 11 U 12U 11 U II U II U 12 UJ 11 U 11 U 12 U trans-1,3-Dichloropropene 11 U 12U II U II U II U 12 UJ II U ll U 12 U Bromoform II U 12 U 11 U II U 11 U 12 UJ II U II U 12 U 4-Methyl-2-pentanone 11 U 12 U IIU II U llU 12 UJ llU ll U 12 U 2-Hexanone 11 U 12 U II U II U 11 U 12 UJ II U 11 U 12 U 1, 1,2,2-Tetrachloroethane ll U 12U 11 U II U II U 12 UJ IIU 11 U 12 U Tetrachloroethene 11 U 12 U 72J 35 J 1 J 12 UJ llU 11 U 12 U Toluene II U 12U II U II U llU 12 UJ llU II U 12 U Chlorobenzene IIU 12 U II U llU llU 12 UJ llU II U 12 U Ethylbenzene II U 12 U 11 U 11 U II U 12 UJ 11 U 11 U 12 U Sryrene 11 U 12 U IIU IIU llU 12 UJ 11 U 11 U 12 U Xylenes pota1) llU 12U ll U ll U ll U 12 UJ llU 11 U 12 U tert-Buty Methyl ether 55 U 20J 55 U 55 U 55 U 60UJ 56 U 55 U 60U n-Propylbenzene R R R R R R R R R Dibromomethane R R R R R R R R R Analyte concentrations in micrograms&er kilogram <r,arts per billion [pph~ Analyses were performed by Enseco- st of Somerse , New Jersey, usmg arch 1990 Contract Laboratory Program (CLP) protocols. B The co~und was also detected in the associated method blank. J Estimat result. U, The compound was analyzed for, but not detected at the corresponding reporting limits. R Result reJected. GERAGHTY & MILLER, INC. Table 2. Concentrations of Base Neutral and Acid Extractable Organic Compounds in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Page 2 of2 Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16FR MW-17 MW-18 MW-19 MW-24 MW-25 (2.0-3.5') (4.0-6.0') (0-3.0') (0-3.0') (6.0-8.0') (12.0- (4.0-8.0') (6.5-8.5") \12.0- 14.0') 4.0') Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 28-Mar-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Hexachlorobenzene 370U 410 U 360U 340U 370U 750U 360U 360U 390U Hexachlorobutadiene 370U 410 U 360U 340U 370U 750U 360U 360U 390U Hexachlorocyclopentadiene 370U 410 UJ 360UJ 340U 370U 750U 360 UJ 360U 390U Hexachloroethane 370U 410 U 360U 340U 370U 750U 360U 360U 390U lndeno( 1,2,3-cd)pyrene 370U 410U 360U 340U 370U 750U 360U 360U 390U Isophorone 370U 410U 360U 340U 370U 750U 360U 360U 390U 2-Methylnaphthalene 370U 410U 360U 340U 370U 750U 360U 360U 390U 2-Methylphenol 370U 410 U 360U 340U 370U 750U 360U 360U 390U 4-Methylphenol 370U 410 U 360U 340U 370U 750U 360U 360U 390U N~hthalene 370U 410U 360U 340U 370U 750U 360U 360U 390U 2- itroaniline 890U 980U 880U 810 U 900U 1800U 880U 880 U 930U 3-Nitroaniline 890U 980UJ 880 UJ 810 UJ 900U 1800U 880 UJ 880U 930U 4-Nitroaniline 890U 980U 880 UJ 810U 900U 1800U 880 UJ 880U 930U Nitrobenzene 370U 410 U 360U 340U 370U 750 U 360U 360U 390U 2-Nitrophenol 370 U 410U 360U 340U 370U 750U 360U 360U 390U 4-Nitrophenol 890U 980U 880UJ 810 UJ 900U 1800 U 880 UJ 880U 930U N-Nitrosodjf henylamine 370 U 410U 360U 340U 370U 750U 360U 360U 390U N-Nitroso- 1-n-propylamine 370U 410 U 360U 340U 370U 750U 360U 360U 390U Pentachlorophenol 890U 980UJ 880UJ 810 U 900U 1800 U 880 UJ 880U 930U Phenanthrene 370U 410 U 360U 340U 370U 750 U 360U 360U 390U Phenol 370 U 410U 360U 340U 370U 750U 360U 360U 390U Pyrene 370 U 410 U 360U 340U 370U 750 U 360U 360U 390U 1,2,4-Trichlorobenzene 370 U 410U 360U 340U 370 U 750U 360U 360U 390U 2,4 ,5-Trichlorophenol 890U 980U 880U 810 U 900U 1800 U 880U 880U 930U 2,4,6-Trichlorophenol 370U 410U 360U 340U 370U 750U 360U 360U 390U Analyte concentrations in micrograms_per kilogram (farts IX'.r billion [ppbl). Analyses were performed by Enseco-East of Somerse, New Jersey, usmg March 1990 Contract Laboratory Program (CLP) protocols. J Estimated result. U The compound was analyzed for, but not detected at the corresponding reporting limits. R Result reJected. NA Not applicable. GERAGHTY & MILLER, INC. Table 2. Concentrations of Base Neutral and Acid Extractable Organic Compounds in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Page 1 of2 Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16 FR MW-17 MW-18 MW-19 MW-24 MW-25 (2.0-3.5') (4.0-6.0') (0-3.0') (0-3.0') (6.0-8.0') p2.o- (4.0-8.0') (6.5-8.5') \12.0- 4.0') 4.0') Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 28-Mar-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Acenaphthene 3700 410 0 3600 3400 3700 7500 3600 360U 390U Acenaphthylene 3700 410U 360U 340U 370U 750U 360U 360U 390U Anthracene 370U 410U 360U 340U 370U 750U 360U 360U 390U Carbazole 370U 410U 360UJ 340U 370U 750U 360 UJ 360U 390U Benzo(a)anthracene 370U 410U 360U 340U 370U 750U 360U 360U 390U Boororiw.- 370U 410U 360U 340U 370U 750 U 360U 360U 390U Benzo b uoranthene 3700 410U 360U 340U 370U 750U 360U 360U 390U Benzo ~,h,i)perylene 370U 410U 360U 340U 370U 750U 360U 360U 390U Benzo )fluoranthene 370U 410 U 360U 340U 370U 750U 360U 360U 390U 4-Bromophenyl phenyl ether 370U 410 U 360U 340U 370U 750U 360U 360U 390U Bu&l benzyl phthalate 370U 410 U 360U 340U 370U 750U 360U 360U 3900 4- loroaniline 370U 410U 360U 340U 370U 750U 360U 360U 390U bisr-Chloroethoxy)methane 370U 410U 360U 340U 370U 750U 360U 360U 390U bis 2-Chloroethyl)ether 370U 410U 360U 340U 370U 750U 360U 360U 390U bis 2-Chloroisopropyl)ether 370U 410U 360U 340U NA 750 U 360U 360U 390U 4-Chloro-3-met~lphenol 370U 410U 360U 340U 370U 750U 360U 360U 390U 2-Chloronaphth ene 370U 410 U 360U 340U 370U 750U 360U 360U 390U 2-Chlorophenol 370 U 410U 360U 340U 370U 750 U 360U 360U 390U 4-Chlorophenyl phenyl ether 370U 410U 360U 340U 370U 750U 360U 360U 390U Chrysene 370U 410U 360U 340U 370U 750U 360U 360U 390U Di-n-butyl }ihthalate 370U 410U 52J 340U 370U 750 U 360U 360U 390U Dibenz(a,h anthracene 370U 410U 360U 340U 370U 750U 360U 360U 390U Dibenzofuran 370U 410U 360U 340U 370U 750 U 360U 360U 390U 1,2-Dichlorobenzene 370U 410U 360U 340U 370U 750U 360U 360U 390U 1,3-Dichlorobenzene 370U 410U 360U 340U 370U 750 U 360U 360U 390U 1,4-Dichlorobenzene 370U 410U 360U 340 U 370U 750 U 360U 360U 390U 3 ,3 '-Dichlorobenzidine 370U 410U 360U 340U 370U 750U 360U 360U 390U 2,4-DichloroJ>henol 370U 410U 360U 340U 370U 750U 360U 360U 390U Diethyl phthalate 370U 410U 360 UJ 340U 370U 750 U 360 UJ 360U 390U 2,4-0imethylphenol 370U 410U 360U 340U 370U 750 U 360U 360 U 390U Dimethyl phthalate 370U 410 U 360U 340U 370U 750 U 360U 360U 390U 4,6-Dinitro-2-methylphenol 890U 980UJ 880U 810UJ 900U 18000 880U 880 U 930U 2,4-Dinitrophenol 890 UJ R 880 UJ SIOUJ 900UJ 1800 UJ 880UJ 880 UJ 930UJ 2,4-Dinitrotoluene 370U 410U 360U 340U 370U 750U 360U 360U 390U 2,6-Dinitrotoluene 370U 410 U 360U 340U 370U 750U 360U 360U 390U Di-n-ocil ~hthalate 370U 410U 360U 340U 370U 750U 360U 360U 390U bis(2-Et yl exyl)phthalate 210J 410U 360U 340U 370J 130 J 360U 240J 140J Fluoranthene 370U 410 U 360U 340U 370U 750U 360U 360U 390U Fluorene 370U 410 U 360U 340U 370U 750 U 360U 360U 390U Analyte concentrations in microgram~r kilogram (parts per billion [ppb~ Analyses were performed by Enseco- t of Somerset, New Jersey, usmg arch 1990 Contract Laboratory Program (CLP) protocols. J Estimated result. 1) The comeound was analyzed for, but not detected at the corresponding reporting limits. R Result re)ected. NA Not apphcable. GERAGHTY & MILLER, INC. Table 3. Concentrations of Metals in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16 FR MW-18 MW-19 MW-24 MW-25 (2.0-3.5') (4.0-6.0') (0-3.0') (0-3.0') (12.0- (4.0-8.0') (6.5-8.5') p2.0- 14.0') 4.0') Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Aluminum 23000 21100 25700 29000 22200 27300 14100 17000 Antimony 5.2 UJ 6UJ 5 UJ 5.2 UJ 5.5 UJ 5.4 UJ 5.2 UJ 5.6UJ Arsenic 0.71 B 0.82B 2.1 0.77 B 1.3 B 1.3 B 3 0.94B Barium 40.5 B Bl.I 41.3 B 26.5 B 37.9 8 38.4 B 41.9 8 114 Beryllium 0.228 0.34 0.28 8 0.25 B 0.28 8 0.33 B 0.22 U 0.35 8 Cadmium 0.86U 1.18 0.84 U 0.97 B 0.91 U 1 8 18 0.95 B Calcium 67400 5730 22800 54400 10800 30400 1140 2340 Chromium 23.8 J 33.2 J 39.1 J 45.3 J 27.5 J 30.1 J 2.1 BJ 13.5 J Cobalt 17.1 21.3 27.4 J 23.7 J 20.1 22J 9.3 B 18.4 Copper 77.9 94.9 135 82.4 62.6 71.1 30.3 56.5 Iron 29100 38600 35300 36900 34300 39800 30700 39300 Lead 33.6 4.9 3.2 3 8.5 2.4 6.9 11.7 Magnesium 18700 11100 22000 25100 15600 21600 5920 6280 Manganese 705 622 927 818 472 743 * 1350 1250 Mercury 0.05 U 0.08B 0.05 U 0.05 U 0.06U 0.06U 0.05 U 0.06U Nickel 27.3 18.4 21.5 21.9 17 16.2 2.6U 8.3 B Potassium 492B 773 B 151 U 175 B 1440 1800 217 B 1130 B Selenium 0.43 UJ 0.5 U 0.42 U 0.43 U 0.46 U 0.45 U 0.44 U 1.1 B Silver 0.64 U 0.75 U 0.63 U 0.65 U 0.68 U 0.83 B 0.8 B 0.82B Sodium 393 U 1550 384 U 396U 511 B 413 U 993 B 430U Thallium 0.43 U 0.5 U 0.42 U 0.43 U 0.46 U 0.45U 0.44 U 0.47 U Vanadium 84.5 112 120 109 130 126 37.9 89.6 Zinc 585 51.4 51.7 52.3 65.2 57 .1 57.2 87.2 Analyte concentrations in mil~rams E;er kilo§ram (parts per million [ppm]). Analyses were performed by nseco- ast of omerset, New Jersey, usmg standard U.S. Environmental Protection Agency methodology. * Duplicate analysis not within control limits. 8 The an~e was also detected in an associated blank at an comparable concentration. J Estimat result. u The analyte was analyzed for, but not detected at the corresponding reporting limits. GERAGHTY & MILLER, INC. Table 4. Concentrations of Cyanide, Total in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16 FR MW-17 MW-18 MW-19 MW-24 MW-25 (2.0-3.5') (4.0-6.0') (0-3.0') (0-3.0") (6.0-8.0') \12.0- (4.0-8.0') (6.5-8.5') p2.0- 4.0') 4.0") Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 28-Mar-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Cyanide, Total 0.58 U 0.79U 0.52 U 0.54 U 0.53 U 0.57U 0.56U 0.54 U 0.59U Analyte concentrations in milligrams 1>_er kilogram (parts per million [ppm]). Analyses were performed by Enseco-East of Somerset, New Jersey, usmg standard U.S. Environmental Protection Agency methodology. U The compound was analyzed for, but not detected at the corresponding reporting limits. GERAGHTY & MILLER, INC. Table 5. Concentrations of Total Petroleum Hydrocarbons in Soil Samples Collected in March and April 1994 at the Tutu Wells Site, St. Thomas, U.S. Virgin Islands. Sample ID: MW-13 MW-15 MW-16 MW-16 FR MW-17 MW-18 MW-19 MW-24 MW-25 (2.0-3.5") (4.0-6.0") (0-3.0") (0-3.0') (6.0-8.0") p2.0- (4.0-8.0') (6.5-8.5') p2.0- 4.0') 4.0') Analyte Date: 29-Mar-94 28-Mar-94 4-Apr-94 4-Apr-94 28-Mar-94 26-Mar-94 6-Apr-94 31-Mar-94 31-Mar-94 Total Petroleum Hydrocarbons 230 25 U 37 J 53 J 21 U 23U 23 U 22U 23 U Analyte concentrations in milligrams per kilogram (parts per million [ppm]). Analyses were performed by Enseco-East of Somerset, New Jersey, usmg standard U.S. Environmental Protection Agency methodology. J Estimated result. U The compound was analyzed for, but not detected at the corresponding reporting limits. GERAGHTY & MILLER, INC.