905 Yankee Doodle Rd - 2025-04-30 MPCA Letter re: Technical Assistance Letter Copmlition of Soil Vapor AssessmentMMINNESOTA POLLUTION
CONTROL AGENCY
520 Lafayette Road North I St. Paul, Minnesota 55155-4194 1 651-296-6300
800-657-3864 1 Use your preferred relay service I info.pca@state.mn.us I Equal Opportunity Employer
April 30, 2025
VIA EMAIL
Paul Gibbs
SRRT Yankee, LLC
901 3rd St
Minneapolis, Minnesota 55401-1001
RE: Technical Assistance Letter: Completion of Soil Vapor Assessment
Eagandale Center Industrial Park No. 5, 905 Yankee Doodle Rd, Eagan
MPCA Site ID: BF0002820
Billing ID: 30826
PIN: 102250401010
Dear Paul Gibbs:
The Minnesota Pollution Control Agency (MPCA) staff in the Voluntary Investigation and Cleanup (VIC)
Program has been requested to provide confirmation that the soil vapor investigation at the Eagandale
Center Industrial Park No. 5 site, located at the address referenced above (the Site), has been
successfully completed in accordance with MPCA's Vapor Investigation and Mitigation Decision Best
Management Practices document.
The MPCA staff has reviewed the information submitted for the Site. The 17.36 -acre Site is currently
occupied by a 358,532 square foot commercial warehouse building with paved parking. Historically, the
Site was used as agricultural land and a homestead prior to 1967. The original (southern) portion of the
current Site building was constructed in 1970, and the northern portion was constructed in 1980. The
Site building has been used for warehouse storage and distribution by various retail and commercial
tenants since its construction. The east adjacent parcel formerly operated as a drycleaner. A release of
chlorinated volatile organic compounds (VOCs) was discovered during the east adjacent parcel's
previous enrollment in the VIC Program as the Unitog site — Eagan (VP25190); this parcel remains an
active MPCA Site Assessment project (SA0001967). SRRT Yankee, LLC purchased the Site in 2023 for
continued leasing to commercial warehousing tenants. The MPCA is concurrently issuing a Retroactive
No Association Determination to SRRT Yankee, LLC, dated April 30, 2025. Based on data available to
date, the Site appears to lie within a larger undefined area of soil vapor impacts that is under
evaluation by the MPCA's Site Assessment Program (SA0001967).
Six sub -slab soil vapor samples (SS -1— SS -6) were collected in the northeastern portion of the building in
December 2022 (heating season). Trichloroethene (TCE) was detected in one sample (SS -6) at a
concentration of 130 micrograms per cubic meter (µg/m3), which is less than 33 -times (33X) its
commercial intrusion screening value (ISV). Low concentrations of cis-1,2-dichloroethene (cis-1,2-DCE)
were also detected in two sub -slab soil vapor samples. In May 2023 (non -heating season), sample
location SS -6 was resampled along with four new sub -slab sample locations. No chlorinated VOCs were
detected in sub -slab soil vapor during the May 2023 event.
t-rem-vic2-23 - LB 1682 - 7129122
Paul Gibbs
Page 2
April 30, 2025
An additional soil vapor investigation was conducted at the Site in December 2023 (heating season) and
included the collection of 20 sub -slab soil vapor samples within the southeastern portion of the Site
building, which is adjacent to the former drycleaner. Tetrachloroethene (PCE) was detected in sub -slab
soil vapor at a maximum concentration of 88.9 µg/m3, which is significantly less than the MPCA action
level of 33X its commercial ISV. The other sub -slab soil vapor samples identified PCE below the
commercial ISV. Trichloroethene was detected in three sub -slab soil vapor samples at concentrations
less than or slightly greater than its commercial ISV. Vinyl chloride was detected in one sub -slab soil
vapor sample at a concentration much less than its commercial ISV. Based on the completed seasonal
sampling events, the VIC Program concurs that the existing building at the Site does not require a vapor
intrusion mitigation system.
Four exterior soil vapor samples were collected south and southeast of the Site building in December 2023
(heating season) and October 2024 (non -heating season). In the exterior soil vapor samples, PCE and TCE,
when detected, were at concentrations less than or slightly above their respective commercial ISVs.
This determination is based on the recent soil vapor investigations completed at the Site, as described
in the following reports:
• Sub -Slab Soil Gas & Soil Investigation Report, August 4, 2023, Partner Engineering and Science, Inc.
• Environmental Investigation, January 8, 2024, Braun Intertec
• Soil Vapor Investigation Report — Non -Heating Seasonal Round, November 13, 2024, Braun Intertec
The building mitigation decision conveyed in this letter applies only to the existing commercial
buildings at the Site, as described in the reports listed above. This letter does not address any
conclusions or representations regarding future structures or changes in land use at the Site, which
may create new potential exposure pathways for soil vapor contaminants. The MPCA recommends that
future construction activities at the Site (e.g., potential addition, new building, new utility trenches,
etc.) be preceded by a soil vapor investigation within the footprint of the proposed construction area,
so a vapor mitigation decision for the new feature can be made based on concurrent data.
This letter does not address any conclusions or representations regarding soil or groundwater at the
Site, or regarding petroleum -related VOCs that may have been detected in soil vapor. Petroleum
contamination detected at the Site was under the oversight of the MPCA's Petroleum Brownfield
Program.
Please be advised that the determination made in this letter is subject to the disclaimers found in
Attachment A.
Paul Gibbs
Page 2
April 30, 2025
If you have any questions about the contents of this letter, please contact Amanda Guertin, Project
Manager, at 651-757-2369 or by email at amanda.guertin@state.mn.us.
Sincerely,
a07 I< Na4ev�
This document has been electronically signed.
Amy K. Hadiaris, P.G.
Supervisor
Voluntary Investigation and Cleanup Unit
Remediation Division
AKH/AG:akh
Enclosure
cc: Derek Schilling, Braun Intertec (electronic)
Nikki Stewart, Dakota County (electronic)
Elizabeth VanHoose, City of Eagan (electronic)
Disclaimers
Eagandale Center Industrial Park No. 5
MPCA Site ID: BF0002820
1. Reservation of authorities
Attachment A
The MPCA Commissioner reserves the authority to take any appropriate actions with respect to
any release, threatened release, or other conditions at the Site. The MPCA Commissioner also
reserves the authority to take such actions if the voluntary party does not proceed in the
manner described in this letter or if actions taken or omitted by the voluntary party with respect
to the Site contribute to any release or threatened release or create an imminent and
substantial danger to public health and welfare.
2. No MPCA assumption of liability
The MPCA, its Commissioner, and staff do not assume any liability for any release, threatened
release or other conditions at the Site or for any actions taken or omitted by the voluntary party
with regard to the release, threatened release, or other conditions at the Site, whether the
actions taken or omitted are in accordance with this letter or otherwise.
3. Letter based on current information
All statements, conclusions, and representations in this letter are based upon information
known to the MPCA Commissioner and staff at the time this letter was issued. The MPCA
Commissioner and staff reserve the authority to modify or rescind any such statement,
conclusion or representation and to take any appropriate action under the Commissioner's
authority if the MPCA Commissioner or staff acquires information after issuance of this letter
that provides a basis for such modification or action.
4. Disclaimer regarding use or development of the property
The MPCA, its Commissioner, and staff do not warrant that the Site is suitable or appropriate for
any particular use.
5. Disclaimer regarding investigative or response action at the property
Nothing in this letter is intended to authorize any response action under Minn. Stat.
section 1156.17, subd. 12.
6. This approval does not supplant any applicable state or local stormwater permits, ordinances, or
other regulatory documents.
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