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Please use this identifier to cite or link to this item:
http://hdl.handle.net/10066/826
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| Title: | Effects of biological activity and precipitation on stormwater retention basin water chemistry in Bryn Mawr, PA |
| Author(s): | Pugh, Evan |
| Advisor(s): | Hoyle, Blythe |
| Department: | Bryn Mawr College. Dept. of Geology |
| Abstract: | The Rhoads Pond waterway on Bryn Mawr College’s campus is a small, but
complex and dynamic system that accomplishes the job it was created to carry out. The
scope of this study allowed for assertions to be made regarding the state of the waterway
during the fall 2006 season as well as on a longer term time-scale. Data shows rain
events dilute dissolved ion concentrations and cause electrical conductivity levels to drop.
Two diurnal dissolved-oxygen studies as well as biweekly sampling put bounds on the
date of autumnal cessation of biological uptake between the end of September and the
second week of October. Comparison of all monitoring datasets since 2003 reveals
chemical buildups in the retention basin. An assessment of water quality parameters
reveals that the character of water leaving the retention basin and entering Mill Creek is
less variable than the water entering the retention basin. Lastly, the derivation of an
equation relating chloride concentrations and electrical conductivity can allow future
estimations of chloride levels using only a handheld EC meter. |
| URI: | http://hdl.handle.net/10066/826 |
| Appears in Collections: | Geology (Bryn Mawr)
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Files in This Item:
| File |
Description |
Size | Format |
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| 2007PughE.pdf | Thesis | 857Kb | Adobe PDF | View/Open |
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