EXH2231034823

For this study, the sampling program was designed to collect samp)es from stormwater before iz enters a catchbasin. Most of the previous work performed by other monitoring studies has addressed stormwater that is either in the catchbasin or in a storm drain that is downstream of the catchbasin. Catchbasins may remove material primarily by sedimentation during periods of low flow. For this reason, samples of stormwater in the catchbasin or downstream of the catchbasin may not be representative of the stormwater that enters the catchbasin. Water quality samples were collected and analyzed for the target contaminants identified in Task 1, and also for a variety of other water quality parameters, as described in Sections 2.1.2 and 2.1.3. This was possible in pan because of ongoing programs at UCLA that facilitate stormwater monitoring and analysis. The collected data will be used by students in their research and class projects. Sampling for debris was not performed in this pilot project, due to the difficulty of obtaining enough samples to be confident that the extremely diverse and variable spectrum of litter components was properly characterized.. We believe a much longer period would be required to obtain representative debris samples. Some limited observation of debris in stormwater and collection of debris in catchbasins was performed in Task 4, (reported in Section of this report), as a part of field studies of candidate retrofits. 2.1 METHODS 2.1.I SampleLocationandCollection - Stormwater samples were collected at the inlets to four catchbasins during storm events occurring from September…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
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Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]