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AGREEMENT FOR LAKE MANAGEMENT pg. 2 <br />AND WATER QUALITY SERVICES <br />industry standards and in accordance with both the substantive and procedural requirements <br />specified in this Agreement. <br />The City shall provide the County with reasonable access to any location where <br />Services are to be provided. If the City is unable to provide such access, the County shall <br />have no obligation to perform any Services under this Agreement unless and until the City <br />provides reasonable access. <br />3. LAKE MONITORING SERVICES <br />3.1. Lake Water Quality Monitoring <br />Beginning in 2025, the County, through the assistance of trained citizen volunteers, <br />will perform basic water quality monitoring of Silver Lake two times per month from May <br />through October of each contract year depending on volunteer availability. Basic monitoring <br />will be conducted in the deepest portion of the lake and will consist of measurements of water <br />clarity (Secchi depth) and near-surface water temperature, as well as observations of water <br />color and algae abundance. <br />Water column profiles for temperature and dissolved oxygen will also be taken as a <br />part of basic monitoring per availability of a dissolved oxygen/temperature meter (meter). If <br />the City provides a meter, the profiles will be included every year as part of basic monitoring. <br />The County will provide basic maintenance of a City-provided meter, but will not be <br />responsible for repairs. If the City does not provide a meter, then Silver Lake volunteers will <br />be provided with a County meter at least every third year. The County will be responsible for <br />all maintenance and repairs of County-provided instruments. <br />The County will also provide more detailed monitoring of Silver Lake from June <br />through September of each contract year including in months when a volunteer is not available. <br />The detailed monitoring will be conducted in the deepest portion of the lake and will include <br />water samples for laboratory analysis. The sampling depths and associated parameters to be <br />analyzed are as follows: <br /> <br />Parameter 1 meter 5 meter 15 meter <br />Total Phosphorus (TP) X X X <br />Soluble reactive phosphorus <br />(SRP) <br />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 <br />Monitoring Plan for the Snohomish County Lake Management Program” as updated. Citizen <br />volunteers will be trained by the County in proper monitoring techniques and will be <br />supervised by County staff. Water samples will be analyzed by a Washington State <br />Department of Ecology-accredited laboratory. The laboratory results are sent to the County in <br />electronic format. The cost for all such services shall be as set forth in Section 5 below.