SDMS Document 
115560 
COMPENDIUM OF WELL WATER DATA 
COLUECTED AT THE VIRGIN ISLAND CHEMICAL CO. BY THE USEPA 
(1986-1990') 
FOREWORD 
The purpose of this report is to summarize pertinent sampling data and information regarding the volatile 
organic, well water data collected by the United States Environmental Protection Agency (EPA) during 
various sampling events at, and in the vidnity of the Virgin Island Chemical Co. (VIChem) Hazardous 
Waste Site in SL Croix during and prior to the 1990 Superfund Removal Action. Summary reports of each 
of these sampling events are included in the VIChem Removal Action Site Files. 
A review of the data indicates that Chloroform was consistentiy the dominant contaminant during each 
of the sampling events. For this reason. Chloroform results are included herein and are ploned in the 
attached graph, "Chlorofonn Contamination in Well Water - Virgin Island Chemical Co. Site, St. Croix". 
Since the purpose of this report is to merely assemble pertinent data, and not to interpret the data or 
make recommendations based on the data, all analyzed data, including qualified and rejected data, are 
included in this repon. 
It should be pointed out that the Drinking Water Maximum Contaminant Level for total trihalomethanes 
is 100 ug/l (See 40 CFR §141.12) and the 1980 Federal Water Quality Criteria for Chloroform (as revised), 
based on a carcinogenicity of IO"*, is 5.70 ug/l for human exposure from contaminated water and fish. 
COMPENDIUM 
1. RCRA Enforcement (3/13/86) The Environmental Services Division (ESD) of Region 2 conducted a 
RCRA Enforcement Inspection of the VIChem facility, then known as Berlex Laboratories, on March 13, 
1985. The inspection included 3 soil samples taken from the interminent stream, or "gut", on the site 
perimeter, 2 soil samples obtained firom the laboratory water drainage pit, and one sample taken from the 
production well in the northwest comer of the property. The results of the organic analysis from the 
production well indicated Chloroform contamination at a level of 130 ug/l. 
2. St. Croix Well Survey Phase I (3/7/88-3/10/88) The Response and Prevention Branch (RPB) conducted 
well sampling for volatile organic constituents at 21 locations in St. Croix, including four wells in the 
vicinity of the VIChem Site. The data was rejected by the Monitoring Management Branch (MMB) due 
to excessive holding times. Chloroform contamination was indicated in the October 25, 1988 repon, 'St. 
Croix Well Survey", prepared by Weston - TAT, as shown below: 
Well Name 
- Fairplains #6 
Fairplains #9 
. VIPA #1 
VIPA #2 
Chloroform (ug/l) 
24 
75 &70 
11.5 
11.3 
3. St. Croix Well Survev Phase I (10/31/58-11/2/88) RPB resampled wells at eight locations, including 
four wells in the vicinity of the VIChem Site. Chloroform contamination was indicated as shown below: 
Well Name 
Fairplains #6 
Fairplains #9 
Fairplains #8 
VIPA #2 
Chloroform (ug/l) 
35.9 
10.4 & 9.7 
12.4 
1.6U* 
* Chloroform was not detected at the detection level of 1.6 ug/l. 
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4. VIChem Removal Action Phase I (1/17/901 During Phase I removal action activities at VIChem, three 
off-site wells and the on-site water tank were sampled for volatile organic contamination. Analytical 
services were provided by a private laboratory procured by the TAT. In addition to the routine QA/QC 
required for Level 2 Removal Program sampling, two performance evaluation samples and one blind 
duplicate sample were analyzed. TAT validated the data and, although QA/QC discrepansies were slight 
and few, the data was qualified as estimated. Once again, Chlorofonn was the most dominant compound 
in each sample; the data for this contaminant are shown below: 
Well Name 
Fairplains #6 
Fairplains #9 
Fairplains #8 
Water Tank 
Chlorofonn (ug/l) 
39.0 
25.0 
5.0 
23.9* 
* This is an average of Chlorofonn contamination in the three tank samples (Water tank sample = 23.9 
ug/l, Water tank drain sample = 22.7 ug/l,"Water tank pump sample = 25.0 ug/l). 
5. VIChem Removal Action Phase I (6/25/90) During Phase II removal action activities at VIChem, four 
off-site wells were sampled and analyzed for volatile organic contaminants. When detected. Chloroform 
was the most dominant compound in each sample and in 3 out of 4 samples the only VOC detected. 
Analytical services were provided by the Contract Laboratory Program and the data was validated by MMB. 
The only data qualified was for a QA/QC sample for a single compound. The Chloroform data for this 
sampling event are shown below: 
Well Name 
Chloroform (ug/l) 
Fairplains #6 
11 
Fairplains #9 
39 
VIPA#1 
2J* 
! 
VIPA #2 
5U** 
* An estimated value of 2 ug/l was reponed. 
** Chloroform was not detected at the detection level of 5 ug/l. 
302357