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BLASLAND, BOUCK & LEE, INC. SvG/MEEflS & SC/SvTOTS 1 East Uwchlan Avenue, Suite 112, Exton, Pennsylvania 19341-1281 (215) 524-9340 FAX: (215) 524-9415 January 5, 1994 Thomas V. Danahy Geraghty & Miller, Inc. 201 West Passaic Street, 3rd Floor Rochelle Park. NJ 07662 Re: Tank Excavation Sample Data, Tutu Wells Site, St. Thomas, USVI Dear Mr. Danahy: This letter is in response to your inquiry of December 9, 1993 regarding our data from the Western Auto tank excavations conducted October 19 through October 22, 1993. The apparent discrepancies stemmed from the fact that changes were made to the analysis request after the samples and chain-of- custody had been submitted to the laboratory. Since the original chain-of- custody was included in each data report without any reference to the subsequent changes, it appeared that the report did not include all of the data. The attached chart should serve to clarify these changes. Also, we have included sample descriptions and a map indicating the location of each sample. All samples obtained by Blasland, Bouck & Lee were split with ENSR; however, ENSR's sample designations are not known to us. We hope this information is helpful to you. Please feel free to contact us at (215)-524-9340 if you have any further questions regarding this matter. Sincerely, BLASLAND, BOUCK & LEE, INC. David S. Coyne Geologist -e 0 -f ^X-Ov——^ I • Thomas F. Maguire, C.P.G. Associate TUT 006 1308 Syracuse, NY • Rochester, NY • Islandia, NY • White Plains, NY • Middletown, NY • Cranbury, NJ • Exton, PA • Pittsburgh, PA Durham, NC • Columbus, OH • Boca Raton, FL • Tampa, FL • Orlando, FL • Miami, FL • In/me, CA s~i r* *64752* 64752 TABLE 1. Changes in Laboratory Analyses, Western Auto Excavation Samples SAMPLE NAME PS-2 PS-3 WS-1 WS-2 WS-3 SS-1 SS-2 SS-5 SS-6 SS-7 SS-9 SS-11 DATE 10/20 10/21 10/19 10/19 10/19 10/19 10/19 10/20 10/21 10/21 10/21 10/22 DATA SOUGHT BYG&M 8270 8270 8240, 8270 TPH Metals Metals Metals Metals Metals Metals Metals Metals Metals DISCREPANCY Lab order changed; 8270 not run Lab order changed; 8270 not run All laboratory analyses canceled TPH (GC) included; see attachment Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed Lab order changed; metals not analyzed TABLE 2. Sample Location Descriptions SAMPLE i PS-4 PS-5 PS-6 WS-1 SS-11 TIME i DATE II DESCRIPTIONOF LOCATION 2:54 pm 4:39 pm 1 1 :30 am 2:27 pm 1 1 :45 am 10/21/93 10/21/93 10/22/93 10/19/93 10/22/93 Waste oil from standing basin in room south of Western Auto service bays Material from inside PVC line running from standing basin to Tank 1 Material from inside pipe, broken, between excavations Water from line chipped during Tank 1 excavation Soils outside broken area of line between excavations TUT OO6 1309 LOADING DOCK N TW-6 (TO - 1.2' BLS SOFT RED CLAY CEMEW) (TO - 1.2* BLS CONCRETE) UNDERGROUND STORAGE TANK NO. 2 (DIESEL) SERVICE BAY NO. 3 UNDERGROUND STORAGE TANK NO. 1 (WASTE OIL) IOX. 300 GALLON ESEL (?) TANK ^TH STEEL STAIRWAY ' ' W////%r/, FOUR WINDS PLAZA APPROX. 200 GALLON DIESEL (?) TANK (ABOVE GROUND) 'DOORWAY SERVICE BAY NO. 1 WESTERN AUTO SERVICE BAY NO. 2 LEGEND : SCALE 15 •=5 rtrrr CARIBBEAN HYDRO-TECH SOIL BORING PERFORMED IN NOVEMBER/DECEMBER 1992 ___ ESTIMATED LOCATION OF L>_^J UNDERGROUND STORAGE TANK TO TOTAL DEPTH WT WATER TABLE BLS BELOW LAND SURFACE T-! '•A oo f-D Lancaster Laboratories Where quality is a science. Blasland, Bouck & Lee 1 East Uwchlan Avenue, Ste 112 Exton, PA 19341-1281 VS-2 Grab Vater Sample Esso Tutu / 58101 WS-2- SDG# BLAH-02 TPH by GC-FID (Waters) Gasoline Kerosene Diesel/#2 Fuel See attached fingerprint comment. 1 COPY TO Blasland, Bouck & Lee 1 COPY TO Data Package Group RESULT AS RECEIVED 200. mg/1 < 200. mg/1 < 200. aig/1 03:20:48 397620 ASROOO D 2 3 06734 0 LLI Sample No. Vff 2042573 Date Reported 117 5/93 Date Submitted 10/23/93 Discard Date 11/13/93 Collected 10/20/93 by DC Time Collected 0943 P.O. 58101 Rel. LIMIT OP QUANTITATION 200. 200. 200. LAB CODE 482900000P 483000000P 483100000P ATTN: Mr. Thomas Maguire Kl •H Questions? Contact Environmental Client Services at (717) 656-2301 Respectfully Submitted Lancaster Laboratories, Inc. oo h- Lancaster Laboratories, Inc. t*v- 2425 New Holland Pike Lancaster. W, 17601-599-1 717-656-2301 Delwyn K. Schumacher, B.S. Group Leader, ExpressLAB See reverse side for explanation of symbols and abbreviations. Analysis Repo ^La ^Ir Whncaster Laboratories Where quality is a science. LLL Sample No. W 2042573 WS-2 Grab Water Sample Esso Tutu / 58101 Analysis: 4828 The GC Fingerprint for this sample indicates the presence of a mixture of petroleum distillates. The early eluting (more volatile) portion of the fingerprint is a pattern of peaks similar to the pattern for our gasoline reference standard. Differences in relative peak intensities and ratios suggest that the gasoline in the sample may be veathered. When ve calculate this distillate as gasoline, it is present at 200 mg/1 in the sample. The later eluting portion of the fingerprint is an area of unresolved peaks typical of our lubricating oil reference standards. The sample pattern is similar to the pattern for our 10 V 40 motor oil reference standard. When ve calculate this distillate as 10 V 40 motor oil, it is present at 1,400 mg/1 in the sample. Consider the quantitations approximations due to the differences between the sample pattern and those of our reference standards. M T-j -G O O Lancaster Laboratorie me. -<rM-7 717-656-2301 Respectfully Submitted Lancaster Laboratories, Inc. Environmental at (717) 656-2301 Delwyn K. Schumacher, B.S. See reverse side for explanation of symbols and abbreviations. i f- •2: 91