Annual Report - Washington Suburban Sanitary Commission

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Patuxent Reservoirs Watershed Annual ReportNovember 2005taken place. This location accounts for approximately one-fifth of the unforested buffers onpublic land. The total cost, not including staff time, will be approximately $300,000.ConclusionOver the past year, the TAC continued to evaluate potential implementation items and setpriorities for effective long-term watershed management. In order to assure our success, theconsensus within the TAC is to focus on public outreach, a need for two full-time staff, andriparian buffer establishment and maintenance.The TAC recognizes that an educated and involved public is needed to assure drinking waterquality, terrestrial and stream resource protection, and maintenance of the rural character of thewatershed landscape. Successful completion of our goals will require a full-time position tocoordinate more effective outreach to residents and resource users in the watershed. In addition,the TAC will need a full-time liaison capable of coordinating across agencies and diverseprojects, tracking the success and rate of implementation across the watershed, and seeking outand applying for grant funding to support implementation. The TAC also recognizes theimportance of fully-functioning riparian forested buffers to achieve multiple goals for protectingpriority resources.Without proper staffing and funding resources, the TAC will not be able to accelerate or trackthe success of ongoing efforts, nor achieve implementation within the timelines established asnecessary to protect the priority resources of the watershed.10
Patuxent Reservoirs Watershed Annual ReportNovember 2005TABLE 1. PRIORITY RESOURCES CHARTResource: Reservoir/Water SupplyIssue: The public need for a sufficient quantity of safe and high quality drinking water calls for adopting a proactive and multi-barrierapproach, which starts with utilizing raw water of the highest quality and sustainable quantity, now and in the future. To achieve thisfor the Patuxent water filtration plant we need to control reservoir eutrophication, reduce Disinfectant By-Products (DBPs) precursors,and limit reservoirs capacity loss.Measures Goals Implementation Items Time Line ResponsibleChlorophyll-aDissolved oxygenSuite of water qualityparameters in reservoirmonitoring protocolTotal organic carbon (TOC)Sediment• Chl-a not to exceed a 10 ug/l meanduring the growing season and not toexceed a 30 ug/l instantaneousconcentration• DO not to fall below 5 mg/l at anytime in the epilimnion, not to fallbelow 5 mg/l in the entire watercolumn during completely mixedperiods, and not to fall below 10%saturation at any time in thehypolimnion• Five year data trend analysis forother monitored water qualityparameters shows no netdeterioration• TOC – 20% annual reduction goal,with 40% reduction for peak quarterat the location where water iswithdrawn for treatment purposes• Sediment accumulation rate not toexceed previous years• Perform reservoir monitoring forChl-a, DO, and TOC during thegrowing season• Enhance and fine tune modelreliability for watershedmanagement.• Develop and begin implementationof a plan to reduce nutrients, basedon model/TMDL requirements.• Update trend analysis for reservoirwater quality parameters on a 5-year cycle• Perform bathymetric survey ofreservoirs at 10 year intervals orlessOngoingOngoing2006 - 200820092006PartnerWSSCWSSC/MDETACWSSCWSSC11
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Annual Report - Washington Suburban Sanitary Commission

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