HomeMy WebLinkAboutEnvironmental Analysis Memorandum 12.14.1812.14.18
473-479 and a portion of 487 $tation Avenue, Yarmouth, MA
Proposed Fuel Service Station and Convenience Store ("Project")
To: Yarmouth Water Department - Gary Damiecki, lnterim Water Superintendent
Cc: Yarrnouth Board of Health - Bruce Murphy, Health Agent
Attachments:
Summary - Underground Fuel Storage Comparisons
Diagram of Double-Wall Tank
3O-Year Storage Tank Warranty
Diagram of a 10-foot diameter 20k-gallon tank
Double wall tank sump brochure
1. A substantial net reduction in the total amount of underground fuel storage
gallons; and
2. A significant improvement in the design and containment protocols of the
remaining underground storage of fuel; and
3. The removal ofthe four single-wall underground fuel storage tanks at the 446
Station Ave. Shell, while installing a safer, double-wall tank system with leak
detection and brine in the inlerstitial space, at the Project;
4. An estimated reduction of 45 to 50 linear feet of underground piping by
removing piping at two sites and installing new piping at the Project;
5. Automatlc and continuous leak detection system in the double-wall
underground storage tanks and double-wall piping complete with probes,
sensors and alarms;
by permanently closing two older fuel service facilities within one quarter mile of the
property, with an average age of 40 years, and replacing them with one new state-of-
Environmental Analysis Memorandum
lntroduction: The purpose of this document is to explain how the Project will reduce
environmental risk and improve environmental quality in Yarmouth's Aquifer
Protection District. Specifically, the Project will result in:
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the-art facility with fewer underground tanks, less underground piping, modern leak
detection with sensors and alarms and a decreased volume of underground fuel
storage.
There are currently seven underground tanks, six dispensers, and 56,000 gallons of
storage at the two existing facilities. The Project will result in only two underground
tanks, six dispensers, and 40,000 gallons of storage.
Project: Development of unimproved land with a new Convenience Store with six
fueling dispensers and two underground storage of gasoline and diesel fuel.
Applicant: Colbea Enterprises, L.L.C. ("Colbea") dba Seasons Corner Market.
Applicant Overview: Colbea is an established company involved in approximately
110 locations throughout Massachusetts, Rhode lsland, and New Hampshire,
including a new Seasons Corner Market and Shell station at 497 Route 134 in Dennis,
MA at Exit 9 (Route 6). Colbea is a family-run business that began more than sixty
years ago and takes pride in its people and facilities. Colbea currently owns the Shell
Station property at 446 Station Avenue across the street from the property and
delivers fuel to the Dealer-Tenant who operates the facility.
Risk Reduction Overview:
Part I - As part of the new development, the following two, older fuel service stations
will have their underground storage tanks (UST's), piping, and fuel dispensers
permanently removed, with a deed restriction against future fuel use on each property:
A. Permanent Removal (existing Sunoco Statlon at 433 Station Avenue): The
permanent removal of the three UST's with a total capacity of 24,000 gallons
as well as the two fuel dispensers and underground piping. This system was
installed in 1986 and is a double-wall fiberglass design and does not have
brine-filled interstitial spaces for leak detection (it has an older wrap-around
double wall sensor, which cannot detect water or product in the interstitial
spaces).
B. Permanent Removal (existing Shell at 446 Statjon Avenue): The permanent
removal of the four UST's with a total capacity of 32,00O-gallons, as well as the
four fuel dispensers and underground piping. This system was installed in 1970
and is a single-wall fiberglass design, thereby lacking the safety aspect of a
second outer wall which would act as a second shield from the environment if
present.
Total Removal of Underground Storage Tanks: Seven
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Total Removal of Underground Storage Capacity: 56,000 gallons
Total Product Dispensers Being Removed: Six
Part ll - The vacant land a|473-479 and 487 Station Avenue will be developed into a
modern convenience store branded Seasons Corner Market along with six multi-
product fuel dispensers offering Shell branded gasoline and diesel fuel. The upgraded
design will include two double-walled fiberglass underground storage tanks
manufactured by Containment Solutions. The interstitial spaces will be brine-filled to
facilitate a modern, continuous leak detection system with sensors and alarms and
will be 10 feet in diameter, have 20,000-gallon storage each for a total 40,000-gallon
capacity.
The piping design will also include a leak detection system and will have the lalest
double-walled UPP materials technology. UPP is polyethylene plastic blended with
an epoxy resin, extruded in manufacturing as a single piece, so there are no
joints/elbows or seams. lt is "welded" into the polyethylene sumps at the tanks and
dispensers using heat and resin epoxy that basically seals it as one piece.
Risk Reduction Summary
Net Reduction of Tanks: Five
Net Reduction of Underground Storage Capacity: 16,000 Gallons less or
29 Percent less capacity than the existing older storage
Product Dispensers: No Change - it will remain at Six
Reduction in Underground Piping: Estimated decrease of about 45 to 50
Ilnear feet of piping due to five less tanks
lmproved Leak Detection: A continuous automatic sensing system with
alarms at store level and sent to management team concurrently to cell phones
with integrated email notifications to store and corporate environmental and
maintenance personnel.
st uel S m Tech : The new development will Incorporate the latest
technology that features modern interstitial sensors between the brine-filled tank walls
and alarms that will notify store employees and off-site company management
automatically by cell phone and electronic mail. lt will also have modern vapor
recovery systems and double-wall secondary containment under the product
dispensers.
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EVO Leak Detection: The EVO aulomatic tank gauging system and control module
made by Franklin Fueling Systems will be used for the Project and is an upgrade from
the older Veeder-Root systems, with limited communication, at the Sunoco and Shell
stations to be closed. EVO is web-based that will alert store personnel and send
emails and messages to our environmental manager and maintenance company if an
aiarm is triggered 24 hours, every day of the year.
See : http://vwwv.fran klinfuelinq.com/americas/fmslfeatured I 27 282len I evo-series-
overview#H i hti hts
Itlonitorinq Sensors: The Project will be equipped with a series of sensors that will be
a significant safety upgrade compared to the stations to be closed, especially
compared to the single-wall tanks at the existing Shell station. The following provides
a summary:
o High/low product sensors - there are sensors inside the tank that
alarm at low, low-low, high, high-high, and emergency high/stop.
These alarms are all to aid in fuel delivery, etc. Fuel trucks are
dispatched typically at low alarm and should deliver before low-low.
They only drop fuel to fill the tank typically below high and never to
high-high. There is an audible alarmiflashing light outside at the tank
system if emergency high is triggered.
o Brine level sensors - there are sensors in the brine interstitial space
that detect if brine levels increase or decrease. They should typically
do neither other than with physical expansion/contraction due to
temperature.
o Water sensors - there are water sensors in the inside of the tank
that are there to detect any water intrusion into the tank. Water is
denser than gas, so these are on the bottom of the tank. A water
sensor might go off in the event of rainwater leaking to the tank from
above, or brine entering from below in the event of an inner wall
issue.
o Fuel temperature sensors - there are sensors that detect fuel
temperature and alarm at any sudden changes which might indicate
a problem.
Sump sensors - we have sensors in both the dispenser sumps and
the turbine pump sumps at the tank (the turbine pump is the electric
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pump that extracts gas from the tank and sends it to the dispenser
for customer use). These can detect gas and water in the sumps.
Double-Wall Sumps: The Project will have modern-designed sumps located on top of
the underground tanks and below the fuel dispensers with double-wall construction
versus single-wall sumps at the stations to be closed. This upgrade adds to the safety
of the new development.
Operations and Protocol: The store will also be operated by employees of Seasons
Corner Market who are trained to monitor the in-store Franklin Fuel EVO leak
detection monitoring system alerts and how to handle any potential issues. There is
also a detailed spill response system is in place. As such, the new development wil)
also be more advantageous in that it is owned, operated, and overseen by company
employees versus being leased to third parties.
P€ffanent Chanqes: ln addition , the two stations being de-commissioned will have
deed restrictions placed on them permanently prohibiting underground or
aboveground fuel storage. This consolidation of two existing fuel service locations
into one new location thereby also significantly reduces the overall risk in the Aquifer
Protection District.
Summa : Overali, the benefits of closing two older stations in the same vicinity and
APD location and replacing them with modern equipment directly relate to increased
safety and less risk. The new fuel systems have a lower chance of an incident, have
improved leak detection systems and have newer alarms and alerts to prevent any
discharge into the environment in case of an emergency versus the existing Sunoco
and Sheil Stations with tanks installed in 1986 and 1970, respectively.
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