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3. LAKE MONITORING SERVICES <br /> 3.1. Lake Water Quality Monitoring <br /> The County, through the assistance of trained citizen volunteers, will perform basic water <br /> quality monitoring of Silver Lake two times per month from May through October of each contract <br /> year per volunteer availability. Basic monitoring will be conducted in the deepest portion of the lake <br /> and will consist of measurements of water clarity(Secchi depth) and near-surface water temperature, <br /> as well as observations of water color and algae abundance. <br /> Water column profiles for temperature and dissolved oxygen will also be taken as a part of <br /> basic monitoring per availability of a dissolved oxygen/temperature meter(meter). If the City provides <br /> a meter, the profiles will be included every year as part of basic monitoring. The County will provide <br /> basic maintenance of a City-provided meter, but will not be responsible for repairs. If the City does not <br /> provide a meter,then Silver Lake volunteers will be provided with a County meter at least every third <br /> year. The County will be responsible for all maintenance and repairs of County-provided instruments. <br /> The County will also provide more detailed monitoring of Silver Lake from June through <br /> September of each contract year including in months when a volunteer is not available. The detailed <br /> monitoring will be conducted in the deepest portion of the lake and will include water samples for <br /> laboratory analysis. The sampling depths and associated parameters to be analyzed are as follows: <br /> Parameter 1 meter 5 meter 15 meter <br /> Total Phosphorus (TP) X X X <br /> Soluble reactive phosphorus (SRP) X X X <br /> Total Persulfate Nitrogen(TPN) X <br /> Chlorophyll a X <br /> All monitoring will be conducted in accordance with the"Quality Assurance Monitoring Plan <br /> for the Snohomish County Lake Management Program"as updated. Citizen volunteers will be trained <br /> by the County in proper monitoring techniques and will be supervised by County staff. Water samples <br /> will be analyzed by a Washington State Department of Ecology-accredited laboratory. The laboratory <br /> results are sent to the County in electronic format. The cost for all such services shall be as set forth in <br /> Section 5 below. <br /> 3.2. Reporting of Water Quality Data <br /> All data collected from Silver Lake will be summarized annually in two written reports that <br /> will be made available to the City and the general public.The first is a water quality report card,a short <br /> summary for the public of lake health. The second report is a more detailed report with a summary of <br /> all data collected through the monitoring program. The reports for a given calendar year shall be <br /> delivered to the City on or before March 15 after the close of the calendar year at issue. The reports <br /> will also be made available on Snohomish County's website unless otherwise directed by the City.The <br /> raw water quality data shall be available on the County's online water quality database following <br /> completion of quality assurance checks. Copies of the raw data shall also be provided to the City upon <br /> request. <br /> If requested by the City, County staff will also provide one annual public presentation on the <br /> condition of water quality in Silver Lake. The County will also provide comments on documents, <br /> AGREEMENT FOR LAKE MANAGEMENT pg.2 <br /> AND WATER QUALITY SERVICES <br />