Stormwater runoff management and surveillance during construction - Case Vuores
Teuho, Elina (2015)
Teuho, Elina
2015
Ympäristö- ja energiatekniikan koulutusohjelma
Luonnontieteiden tiedekunta - Faculty of Natural Sciences
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Hyväksymispäivämäärä
2015-08-12
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201507291446
https://urn.fi/URN:NBN:fi:tty-201507291446
Tiivistelmä
Stormwater runoff should be treated during construction, and especially from pollutants and sediments that are induced by excavations. Urbanization affects the catchment hydrology increasing runoff and pollutant flushes. During construction, the changes occur in phases, and cold climate and seasonal variations complicate them further. The stormwater runoff threatens receiving waterbodies and possibly the human health. Sediments transported from construction sites end up in receiving waterbodies and in the drainage system, possibly clogging the system causing financial losses. Pollutants are transported in stormwater runoff and discovering the sources and transportation systems of pollutants prevents detriments. Other important information is pollutant response to rain events and pollutant association to particulate matter and the effects of changing seasons.
Stormwater runoff management begins in the planning stage. The sediment transportation needs to be controlled and surface soil should be covered as widely as possible. It is important to maintain the stormwater runoff management systems and inspect the construction sites regarding it. The stormwater runoff in construction sites is treated with best management practices, which are based on filtration and sedimentation. Monitoring stormwater runoff is challenging due to variability of pollutant concentrations and flows. The inspections are important in order for the stormwater runoff management to function at construction sites. Runoff management begins is important in decision making and includes many stakeholders.
The purpose of this thesis was to study construction time stormwater runoff in Vuores, which is located in Tampere. To create an inspection protocol, inspection needs were looked for during field observations, and possible stormwater pollutants were charted from samples. On-site observations were analyzed as such and in a larger context. The pollutant concentrations were levelled up with the development of the area in Vuores, especially during the rain event and as associated with particulate matter. Sulfate concentrations were also high at some parts of Vuores. Observations at construction sites revealed that space was scarce and thus joint management systems should be favored. Sediments are already managed in some extent in Vuores, but still sediments and erosion protection need to be paid attention, especially during rain events. Winter, snow and its melting are also significant. Furthermore, the maintenance of finished systems, such as ditches, needs to be attended to. The stormwater runoff management would benefit from an inspection protocol created on a basis of this thesis.
Stormwater runoff management begins in the planning stage. The sediment transportation needs to be controlled and surface soil should be covered as widely as possible. It is important to maintain the stormwater runoff management systems and inspect the construction sites regarding it. The stormwater runoff in construction sites is treated with best management practices, which are based on filtration and sedimentation. Monitoring stormwater runoff is challenging due to variability of pollutant concentrations and flows. The inspections are important in order for the stormwater runoff management to function at construction sites. Runoff management begins is important in decision making and includes many stakeholders.
The purpose of this thesis was to study construction time stormwater runoff in Vuores, which is located in Tampere. To create an inspection protocol, inspection needs were looked for during field observations, and possible stormwater pollutants were charted from samples. On-site observations were analyzed as such and in a larger context. The pollutant concentrations were levelled up with the development of the area in Vuores, especially during the rain event and as associated with particulate matter. Sulfate concentrations were also high at some parts of Vuores. Observations at construction sites revealed that space was scarce and thus joint management systems should be favored. Sediments are already managed in some extent in Vuores, but still sediments and erosion protection need to be paid attention, especially during rain events. Winter, snow and its melting are also significant. Furthermore, the maintenance of finished systems, such as ditches, needs to be attended to. The stormwater runoff management would benefit from an inspection protocol created on a basis of this thesis.