The former Mobile Repair Department was located
at the southern end of the Infilled Lands, near Ferry Street (Figure
5-1). The site is bordered to the north by the Scrap Storage Area,
to the east by the West Side Road, and to the west by general disposal
area of the High Dump.
Over several decades, locomotives and motor vehicles were repaired,
maintained and fueled in this area. The Mobile Department building
contained eight repair bays, most of which had service pits for
accessing the underside of the vehicles. Extensive storage, handling
and use of petroleum fuels, lubricants and solvents took place in
this area, giving rise to the potential for soil and groundwater
contamination in this area.
The Mobile Department, constructed in the 1920s, was formerly referred
to as the roundhouse as this was a generic term for a locomotive
repair shop. Motor vehicles such as large trucks and front-end loaders
were also serviced in this building. Prior to its demolition in
2001, the concrete floor and service pits were heavily stained with
oil and grease from years of maintenance activities.
Records indicate that at least two underground storage tanks were
once located on this parcel. Specifically, two 9000-litre steel
tanks, installed around 1970, were removed in 1996. The tanks stored
gasoline and diesel fuel, and the same records show that contamination
was associated with these tanks. Although some contaminated soil
was removed from the site at this time, no confirmatory sampling
Currently two aboveground motive fuel storage tanks, both equipped
with dispensers, are located at the former Mobile Department site.
The gasoline and diesel tanks remain in use to service site vehicles.
Both tanks have double steel walls. No significant environmental
concerns are associated with these tanks. An aboveground waste oil
tank was cleaned and removed from the site in 2001.
|Three other buildings
were once located to the south of the former Mobile Department
building, including a tool shed, a paint shop, and the former
Liquid Air plant. The latter was constructed before 1953 and
was demolished in 1998. The plant ceased operation in the 1970s
when the new Liquid Air plant was constructed adjacent to Victoria
Road on the east side of the plant.
|The “Boneyard” occupies
the northwestern portion of the area. Derelict equipment, tires,
vehicles and machinery are stored here, and petroleum hydrocarbon
soil staining was observed in this area, likely resulting from
the disposal of equipment.
Several railway tracks are located throughout this area,
many of which have been abandoned and covered with slag for
many years. Environmental issues of concern associated with
the rail tracks include creosote rail ties and potential contaminated
soil under and adjacent to the tracks. In the past, used oil
was often used for dust suppression on roadways on the steel
A drum storage area was observed adjacent to the DTPW-owned
Substation #1, located to the north of the former Mobile Department
yard. Approximately 100 drums are stored in this area. Many
of the drums are on their side and heavy petroleum hydrocarbon
soil staining was observed in this area. In addition, miscellaneous
waste debris was observed in this area including domestic
garbage, oily rags, oil filters, hoses, wire, wood and metal.
No buildings are currently located in this area, but the
#1 Substation may include PCB-containing equipment, mercury-containing
equipment and lighting, and petroleum storage. A second substation
was formerly located to the west of the former Mobile Shop.
While all structures and equipment have been removed from
this area, impacts may remain in the soil and/or groundwater.
While no records were discovered, herbicides were often used
to suppress vegetation in transformer compounds.
|The majority of open space in this
area is covered with granular materials. Slopes at certain locations
show signs of surface erosion. Overland drainage in the area
may present the possibility of siltation and sediment impacts
to receiving waters.