Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Marmara University, Institute For Graduate Studies İn Pure And Applied Sciences, Department Of Environmental Sciences, Turkey
Approval Date: 2022
Thesis Language: Turkish
Student: GÖKBERK KARA
Supervisor: Orhan Gökyay
Abstract:
Fuel stations pose a potential risk
for soil and groundwater due to the substances they store in underground tanks
from the moment they start operating. In addition, due to industrialization and
population growth, the number of these fuel stations, where retail trade of
automotive fuel is carried out, increases every year. In order to protect soil
and groundwater, rapid detection and diagnosis of leaks from fuel stations is
important.
The purpose of this study is to visualize
and eloborate in terms of the Regulation on Control of
Soil Pollution and Point Source Contaminated Fields (RCSPPSCF) in a fuel
station contaminated with oil spills, and to determine the source of pollution
and rehabilitation/remediation methods.
Within the scope of the study, soil
samples were taken by making 4 shallow drillings at a depth of 4-6 meters for
soil sampling at the fuel station contaminated with oil spills.
In order to expand the study and
determine the source of pollution in the study area, 10-12 m deep drillings and
observation wells were created at three selected points, including underground
tanks containing gasoline and diesel oil, fuel infrastructure filling islands
and infrastructure installations to represent the study area.
In order to determine the water
quality, a total of 10 sets of water samples were taken from three wells in the
field. The first nine datasets were collected with a low-flow pump between
March 2018 and October 2019 (on average once in 2-3 months) and sent to the
international laboratory for total petroleum hydrocarbons, benzene, toluene, ethyl
benzene and xylenes (BTEX) and methyl tertiary butyl ether (MTBE) analysis. The
tenth data set was taken in October 2021 and its analyze was completed with the
same method, In addition, indoor air passive sampling was carried out in
December 2018 from two selected points in the closed parking area of the
neighboring building of the study area and from the elevator in the basement
floor.
In terms of environment and public
health, a pilot scale surface improvement system was established at the fuel
station. The fuel and petroleum-derived product accumulating in the formed
wells was safely taken to the temporary waste storage unit of the facility by
means of submersible pumps and compressors, and disposed of in accordance with
the legislation.
The distribution of pollution was
monitored with the GWSDAT program using the sample results taken from the study
area. Moreover, with the RISC5 program, the risk of cancer of the employees at
the station and the people around them was revealed.
In the light of all the data obtained,
the study area was evaluated within the scope of RCSPPSCF. As a result of these
evaluations, it has been determined that the site is contaminated in terms of
soil and groundwater.