DSHW-2024-004996

t4 o,v,#.H* H:t*!g?J *Hf#f , rn,.
September 20, 1999
Rob Powers
Utah Division of Solid and Hazardous Waste
288 North 1460 West
P.O. Box 144880
Salt Lake City, Utah 84114
Re:Gontinuing Site lnvestigation
Laundry Supply Company
Salt Lake Gity, Utah
Stipulation and Consent Agreement No. 9603031
Olympus Work Order No. A7008
Dear Mr. Powers:
Olympus Technical Services, lnc. (Olympus), on behalf of Laundry Supply Company (LSC) is
pleased to submit the following proposed work plan to continue the site investigation at LSC's
facility located at 3785 West 1987 South in Salt Lake City, Utah (Facility). This document
presents a work plan to initiate a quarterly ground water monitoring program, install up to four
additional ground water monitoring wells at the Facility, conduct background contaminant
research, and dispose of hazardous waste generated during previous assessment activity.
GROUND WATER iIONITORING
To better understand the physical and chemical properties of the aquifer at the Facility, Olympus
proposes to initiate a quarterly ground water monitoring program at the Facility. The monitoring
program will provide data for the calculation of ground water flow direction and gradient, and the
better evaluation of tetrachloroethene (perchloroethylene or PCE) impact to the aquifer. The
recommended monitoring program consists of the following components:
o ground water elevation gauging in monitoring wells MW-1, MW-2, MW-3, MW-4, and MW-5
(Figure 1) and proposed wells MW-6, MW-7, MW-8, and MW-9 (discussed later);
o dense non-aqueous phase liquid (DNAPL) measurement in wells MW-1, MW-2, and MW-3;
o ground water sampling of wells MW-2, MW.4, and MW-S and proposed wells MW-6, MW-7,
MW-8, and MW-9;
5409 KendallStreet o Boise, lD 83706
(208) 37&5m6 o Fax [phone] o E-mail: [e-mail]
C:WAB\Prje6\PBL-LSC.A7@8\DEQ 92G99 u,ork plan.doc
Utah Division of Solid and *r=rrt Waste
September 20, 1999
Page 2
preparation of a duplicate sample, and equipment and trip blanks for quality assurance and
quality control (OA/OC) purposes;
o laboratory analyses of the ground water and QA/QC samples for halogenated volatile
organic (HVO) compounds by Evergreen Analytical, lnc. of Wheat Ridge, Colorado using
protocolestablished in SW-846 Method 8260; and
. preparation of quarterly project status reports for submittalto the Utah Department of
Environmental Quality, Division of Solid and Hazardous Waste (DSHW).
MONITORING WELL INSTALLATIONS
ln an effort to better define the nature and extent of PCE impact to ground water outside of the
suspected release area (decommissioned underground storage tank system), Olympus
proposes to install up to four additiona! ground water monitoring wells. The proposed wells will
provide ground water sampling points in the surficial aquifer down-gradient and cross-gradient
of the suspected release area. ln addition, ground water elevation gauging of the wells will
provide data to better define potential seasonal changes in ground water flow direction and
provide a more complete data set for a health-based risk assessment of the PCE-impacted
ground water.
Olympus recommends that the proposed wells be completed as two-inch diameter, 30-foot deep
polyvinylchloride (PVC) monitoring wells. Figure 1 shows the proposed locations of three of the
wells (MW€ through MW-8). The fourth proposed well (MW-9) will be likely located in the
vacant lot immediately west of the Facility. We wi!! select MW-9's location after ground water
elevations and flow direction are evaluated after the installation of wells MW-6 through MW-8.
BACKGROUND RESEARCH
Analyses of ground water samples collected at MW-4 have detected compounds that may be
indicative of a potential HVO source up-gradient of the Facility. Discussions with various
divisions of the Utah Department of Environmental Quality (DEO) indicate that an upgradient
HVO source may be located south of the Facility. Olympus will research DEQ and other agency
files to better determine the potential off-site and up-gradient HVO source(s).
HAZARDOUS WASTE DISPOSAL
Soi! and water resulting from prevlous assessment activity are presently stored in 21 ,S5-gallon
drums at the Facility. Five drums of soil and two drums of water contain non-hazardous waste.
Five drums of PCE impacted soiland nine drums of PCE impacted water require hazardous
waste incineration. At the request of LSC, Olympus will arrange forthe waste to be transported
to and disposed at Safety Clean's disposalfacility in CIive, Utah.
C : \tulAB\P rcj ec'ts\P B L- LS C. A7008\D E Q $2C99 work pl an . d oc
Utah Division of Solid and ,orrd)*aste
September 20, 1999
Page 3
Please feel free to contact me should you have any questions or comments. I can be reached by
telephone at [phone] or via E-mail at [e-mail].
Sincerely,
Olympus Technical Services, Inc.
f[l/\/t h,,rl
Michael Backe, P.G.
Senior Hydrogeologist
MAB
Attachmentcc: Craig Reaveley, LSC
Lucy Jenkins, Parsons, Behle & Latimer
file
C :WAB\Prciec'ts\PBL-LSC.A7008\DEQ $2G99 work plan.doc
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