Laserfiche WebLink
rl <br />The City of Everett <br />The Floyd & Snider Team Everett Landfill/Tire Fire Site <br />the north reach (SW-7). This runoff includes contributions from the Transfer Station operated by <br />Snohomish County. <br />The sample point to determine compliance is at the confluence of the north and south reaches <br />of the East Ditch. The sample will be collected at the inlet of the culvert draining this confluence <br />(SW-9). At this point, the north and south reaches of the East Ditch are well -mixed and are <br />discharging to the channel that carries the runoff to the Snohomish River. Background <br />concentrations will be subtracted to determine compliance concentrations. <br />Previous surface water sampling sites will not be used because they do not provide sufficient <br />information to fully assess the results of samples collected. The new proposed sampling <br />locations will provide data results at key points in the background and landfill drainage system, <br />including the compliance point. The source of any non -compliant sample results could be more <br />readily determined with the proposed sampling locations, leading to more responsive and <br />effective contingency plan implementation. <br />6.3 FREQUENCY OF SAMPLING <br />Surface water compliance monitoring samples will be collected semkannually. One sampling <br />event will be between April and September and the other between October and March. <br />Sampling will continue for a minimum of three years. If during that three years no monitored <br />contaminant exceeded the cleanup standard, then sampling will stop. If during that period any <br />monitored contaminant exceeds its cleanup standard at the point of compliance, then surface <br />water monitoring will continue for a minimum of another three years beyond that point in time. <br />This process will continue until there was three consecutive years without any monitored <br />contaminant exceeding its cleanup standard at the point of compliance. <br />Any future redevelopment activities will meet stormwater management requirements as defined <br />in the CAP. Additional surface water management requirements will be defined through the <br />NPDES permitting process and the related SWPPP. Responsibility for meeting those <br />requirements is not addressed in the CMCP. Instead, monitoring measures will be addressed <br />through the related standard permitting process. Therefore, no additional compliance <br />monitoring sampling is anticipated to be caused by potential site development. <br />6.4 EVALUATION METHODS <br />All chemistry data will be validated according to United States Environmental Protection Agency <br />(USEPA) data validation guidelines (USEPA, 1994a and 1994b). Data validation will include <br />evaluation of holding times, method blank results, surrogate recovery results, field and <br />laboratory duplicate results, completeness, detection limits, laboratory control sample results, <br />and chain -of -custody forms. A detailed description of the data validation procedures is provided <br />in the sampling and analysis plan, to be developed in accordance with the Scope of Work and <br />Schedule, Exhibit D to the Consent Decree.. After the data has been validated, it will be <br />entered into the project database with any assigned data qualifiers. <br />dots jects Hance o Everett l ndfMCP maker -final Compliance Monitoring and Contingency Plan <br />dots\Compliance Monitoring Plan\CMCP 11-10-OO.doc <br />FINAL - March 2001 Page 6-2 <br />