r
•TGERAGHTY
& MILLER, INC.
Environmental Services
Ground Water
Engineering
Hvdrocarbon
Remediation
Education
September 14, 1992
Ms. Caroline Kwan, Project Manager
USEPA-Region II
26 Federal Plaza, Room 737
New York, NY 10278
Dear Ms. Kwan:
On behalf of Ms. Ana Gloria Ramos, Designated Coordinator for the Tutu Environmental
Investigation Committee (TEIC), we are sending you a revised schedule for the upcoming field
work at the Tutu Service Station Remedial Investigation. The revised schedule reflects changes
requested by the U.S. Environmental Protection Agency (USEPA).
If you have any questions, please call.
c:
Ana Gloria Ramos - TEIC
Jose Agrelot - Soil Tech
DN/intb
#PR01301-3/091192c.ltr
Sincerely,
GERAGHTY & MILLER, INC.
Thomas V. Danahy
Scfentwt/Pjoject Manag
Daniel A. Nachman
Project Director/Project Officer
TUT 
006 
1737
201 West Passaic Street, 3rd Floor • Rochelle Park, New Jersey 07662'(201) 909-0700* FAX (201) 909-0567/0568
*64878*
64878
Table 1. Anticipated Schedule for August through November 1992, Tutu Service Station Investigation, St. Thomas,
" U.S. Virgin Islands.
Date
Activity
August 24 — September 16
August 24 — September 18
September 14 — September 16
September 19 — September 27
Monday, September 28
September 28 - October 9
October 9 - October 14
October 15 - October 16
October 16 - October 28
Thursday, October 29
Friday, October 30
Monday, November 2 @ 10:00 a.m.
Tuesday, November 3 @ 10:00 a.m.
Friday, November 6
Monday, November 9 @ 10:00 a.m.
Tuesday, November 10 @ 10:00 a.m.
Finish monitoring well installation; including MW-2, MW—5, MW-6R
(replacement well), and MW—9S (additional well); abandonment and
sealing of MW-6.
Development of 19 monitoring wells.
The 7th sampling of existing supply wells (pursuant to Administrative
Order No. II - CERCLA 00401 and RCRA - 90 - UST - 9003 - 0401).
Allow monitoring wells to stabilize.
Collect synoptic round of water-levels at all 19 monitoring wells.
First ground—water sampling of all 19 monitoring wells.
Long—term ground—water level recording to check for possible
influence from pumping wells.
Review long-term data.
Coordinate/prepare for pumping test.
Set-up water-level recorders for pre-pumping trend.
4-hour step-test at MW-9orMW-10; record recovery. Set-up
recorder for pre—pumping trend for November 2 test
Start 24-hour pump test at MW-9 or MW-10; pumping
rate to be determined from the results of October 30 step-test.
End test; record recovery; data analysis.
4-hour step-test at MW- 10D; record recovery. Set—up recorder
for pre-pumping trend for November 9 pump test.
Start 24—hour pump test at MW- 10D; pumping rate to be
determined from November 6 step-test.
End test; record recovery.
#PR01301/82192tbl.wk3
GERAGHTY & MILLER, INC.
TUT 
006 
1738