Laserfiche WebLink
Quality Monitoring Plan will be developed in coordination with the St. Johns River Water Management District <br /> (SJRWMD) and the Florida Department of Environmental Protection (FDEP). The final Plan will be submitted <br /> within three months of the grant award and will be designed to measure water quality and comply with <br /> maintenance and monitoring requirements . <br /> Baseline Data: <br /> Baseline data on current water quality will be derived from grab samples and monitoring efforts of the Indian <br /> River County, SJRWMD and FDEP within the East Gifford Storrnwater Improvement Project area . <br /> The County will use the best available data for establishing baseline water quality for the mnoff from the <br /> project area. Data collected during pre-construction monitoring activities will be used as well as that available <br /> from technical literature and reports . <br /> The effectiveness of this project in reducing stormwater loadings will be quantified via water quality <br /> monitoring. This monitoring shall include bi-monthly (6 total) monitoring of stormwater lake inflow and <br /> discharge monitoring points during rain fall conditions . This routine monitoring will quantify the general <br /> physicochemical properties (salinity, temperature, pH, dissolved oxygen) of the runoff water to be characterized <br /> pre and post stormwater lake improvements . During these events, water samples shall be collected through the <br /> use of hand-samplers or automated samplers, when available. After significant rainfall events, the County will <br /> take upstream and downstream water samples either by automated insim instrumentation or by manual <br /> sampling. The samples will be analyzed for appropriate constituents. It is anticipated that no less than six <br /> storm events shall be monitored. Flow shall be monitored to enable pollutant loadings to be calculated. A full <br /> list of analytes is presented in the table below. <br /> Additionally, sediment grabs within the take will be sampled for analysis . One sample each at the beginning <br /> and the end of the post-construction monitoring period. The total phosphoms and nitrogen of these sediments <br /> will be measured. Sediments will be analyzed for trace metals (the 13 EPA priority pollutant metals) as well as <br /> petroleum hydrocarbons . Grain size characteristics will also be quantified. Also, the total amount of sediment <br /> retained within the sumps of the inlet and outfall structures will be measured to enable the overall effectiveness <br /> of these structures to be characterized. <br /> All laboratory analyses will be performed in accordance with USEPA and FDEP approved protocols. The <br /> selected firm will maintain a FDEP approved Comprehensive Quality Assurance Plan and Florida Department <br /> of Health certification. <br /> REMAINDER OF PAGE INTENTIONALLY LEFT BLANK <br /> DEP Agreement No . WM836. Attachment A- 1 , Page 6 of 1 1 <br />