HomeMy WebLinkAboutVIII-07 Authorize Signature - Phase II Environmental Site Assessment of 1292 North Frontage Road City Council Memorandum
To: Mayor Fasbender & City Council Members
From: Ryan Stempski, P.E. – Public Works Director
Date: February 3, 2025
Item: Accept Proposal and Authorize Work – Conduct Phase II Environmental Assessment of 1292
North Frontage Road
Council Action Requested:
The Council is requested to authorize a contract with WSB for conducting a Phase II Environmental Site
Assessment (ESA) of 1292 North Frontage Road.
Background Information:
To continue with due diligence for the purchase of the Central WTP site (1292 North Frontage Road), the
City Council authorized a Phase I ESA at the January 6th City Council Meeting. The Phase I ESA has been
completed and recommends a Phase II ESA to investigate the identified Recognized Environmental
Conditions (RECs). The Phase II ESA would include the collection of environmental samples for
laboratory analysis in accordance with the anticipated site plan. If contamination is found within the
redevelopment area, a Development Response Action Plan will need to be prepared and approved by
the MPCA Brownfields Program prior to site development. Once authorized, WSB estimates a draft
report to be provided within sixty days.
Financial Impact:
The estimated cost of $19,880 for these services will be fully reimbursed by the MPCA Planning and
Design Grant. The work will be completed on a time and material basis.
Attachments:
WSB Proposal for Phase II Environmental Site Assessment
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January 30, 2025
Mr. Ryan Stempski
City of Hastings – Public Works
1225 Progress Drive
Hastings, MN 55033
Re: Scope of Work and Cost Estimate – Phase II Environmental Site Assessment
Proposed Hastings Wastewater Treatment Plant #2
1292 North Frontage Road
Hastings, MN 55033
Dear Mr. Stempski:
As requested, outlined below is a scope of work and cost estimate to complete a Phase II
Environmental Site Assessment (ESA) at 1292 North Frontage Road in Hastings, Minnesota
(Site). The Site is currently developed as a commercial building, housing a pizzeria, dance
studio, and an empty office space. WSB completed a Phase I ESA report for the Site dated
January 23, 2025 (2025 Phase I ESA) which identified the following recognized environmental
condition (REC) and one Business Environmental Risk (BER) associated with Site:
• REC-1: Petroleum Leak Site (LS0016266)
• BER-1: Potential for asbestos and regulated materials in structure
WSB understands a new wastewater treatment plant is proposed at the Site which will include
demolition of the existing Site building and construction of a new building that will measure
approximately 110’ x 140’, as well as a stormwater retention pond and the installation of two
underground backwash tanks.
The purpose of the Phase II ESA is to determine if the REC identified in the 2025 Phase I ESA
resulted in soil and/or soil vapor impacts at the Site requiring special management during
redevelopment. Groundwater is anticipated to be at a depth of 35 feet or greater and the
collection of groundwater samples is not included in this investigation. WSB understands the City
of Hastings (City) will use the Phase II ESA report for environmental planning and budgeting
purposes. The following tasks are proposed as part of this scope of work:
SOIL BORINGS
WSB will advance push-probe soil borings at the Site and collect soil and soil vapor samples for
laboratory analysis. The proposed locations are shown on the attached Figure. The soil boring
activities will include:
• Complete private and public utility locates.
• Advance up to eight mechanical push-probe borings to 12 feet below grade for the
collection of soil samples.
• Advance up to one source soil vapor boring to eight feet below grade and up to three
receptor soil vapor borings to a depth of four feet for the collection of soil vapor samples.
• Screen soils using a photoionization detector (PID) equipped with a 10.6 eV lamp.
• Record general soil classifications/observations on a field log.
• Seal borings per Minnesota Department of Health (MDH) requirements.
SOIL, GROUNDWATER, AND SOIL VAPOR SAMPLING
WSB will collect soil and soil vapor samples during the assessment. Up to two soil samples may
be collected from each boring for laboratory analysis. Two samples will be collected from a boring
VIII-07
Mr. Ryan Stempski
January 30, 2025
Page 2
if there is evidence of contamination. Otherwise only one sample will be collected from that
boring. The samples will be collected in accordance with Minnesota Pollution Control Agency
(MPCA) guidance and analyzed by the laboratory under a 7-10 business day standard turnaround
timeframe. The samples will be analyzed for compounds commonly associated with the RECs
identified in the 2024 Phase I ESA and in general accordance with MPCA Guidance documents.
The soil and soil vapor samples collected from the borings will be submitted to an MDH-certified
analytical laboratory for analysis of the following:
Soil
• Diesel range organics (DRO) by the Wisconsin Modified Method (up to 20 samples)
• Gasoline range organics (GRO) by the Wisconsin Modified Method (up to 20 samples)
• Volatile organic compounds (VOCs) by EPA Method 8260D (up to 20 samples)
• Lead by EPA Method 6020B (up to 20 samples)
Soil Vapor
• VOCs by EPA Method TO-15, full scan (up to 4 samples)
• Fixed gases (methane, oxygen, and carbon dioxide) via either EPA Method 3C or ASTM
method D1946
REPORTING
WSB will summarize the results of the Phase II ESA in a final report. The report will include the
following:
• Scope of work
• Sample location map
• Sample methods and procedures
• Results tables and comparison to applicable criteria
• Investigation results
• Recommendations (if requested by the City) and Conclusions
• Boring logs and laboratory analytical reports as attachments
ASSUMPTIONS
The following items are assumed for this scope of work:
• Site access will be facilitated by the City.
• Up to two remote meetings with the City to discuss the work and results are included.
• Groundwater is not encountered during boring advancement at the Site. If groundwater is
encountered, WSB will contact the City to discuss the collection and analyses of
groundwater samples.
• The soil and soil vapor borings will be completed at exterior locations.
• The estimated cost includes up to eight borings, 16 soil samples and four vapor samples
for the proposed analyses.
• The estimated cost does not include EDGE/EQuIS data submittals to the MPCA. This
may be required if the Site is enrolled into the MPCA Brownfield Program and can be
done at that time.
• We understand the proposed new building footprint totals approximately 15,400 square
feet. If the building plans change at the time of the investigation, the number and
locations of soil vapor borings may need to be revised.
• The City will provide WSB with electronic building/construction plans prior to drilling to
ensure the soil and soil vapor borings target the proposed building footprint and
excavation areas.
• WSB will contract an analytical testing firm for soil and soil vapor analysis.
• WSB will contract an environmental drilling firm to complete the soil and soil vapor
borings and the field investigation work will be completed in two days.
VIII-07
Mr. Ryan Stempski
January 30, 2025
Page 3
• Laboratory samples will be analyzed under a standard 7-10 business-day turnaround
timeframe.
• The Phase II ESA will be limited to the scoped boring locations and the magnitude and
extent of contamination (if discovered) may not be defined.
• A final report will be delivered within two weeks of receiving laboratory analytical results.
• The City will provide one round of review/comment of the report.
ESTIMATED COST
The estimated cost to perform the above-described Phase II ESA is $19,880. The work will be
completed on a time and materials basis in accordance with the attached 2025 Rate Schedule.
ACCEPTANCE
This proposal represents our understanding of the project scope. All work completed through this
proposal will be governed by the Professional Services Agreement between the City and WSB
dated November 2, 2023. If the scope and estimated cost are acceptable, please sign on the
space provided and return one copy to WSB. We are available to begin work once we receive
signed authorization.
WSB appreciates the opportunity of being considered for this project and we look forward to
providing our professional services to you. If you have any questions about this proposal, please
feel free to call Peter Moore at 612.599.4940.
Sincerely,
WSB
Devin Gallagher Peter J. Moore, PG
Graduate Environmental Scientist Senior Project Manager
_____________________________________________________________________________
Enclosures
Figure- Proposed boring locations
WSB 2025 Rate Schedule
SIGNATURE
I hereby authorize the above scope of work, schedule, and cost.
_________________________________________
Name (Print)
_________________________________________
Signature
_________________________________________
Date
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