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n The City of Everett The Floyd & Snider Team Everett Landfill/Tire Fire Site 6.4.1 SURFACE WATER The average of the contaminant concentrations as measured at the two surface water background locations will be subtracted from the contaminant concentrations measured at the point of compliance sample. Any contaminants that are non -detects will be assumed to be present at one-half the detection limit. Exceedance of the cleanup standard will occur if the concentration at the compliance point exceeds cleanup standard after subtracting the average background concentration from the compliance point concentration. 6.4.2 SWPPP The SWPPP will be prepared incorporating the applicable requirements of the Cleanup Action Plan and Consent Decree. Additionally, it will be prepared in accordance with the City of Everett's Stormwater Management Manual. This manual is technically equivalent to Ecology's Stormwater Management Manual. The City's Manual does not repeat all the information in Ecology's Manual, but refers to Ecology's Manual where appropriate. The SWPPP will include requirements for inspection and note standards of acceptance for best management practices. Inspections will be conducted, evaluated and documented in accordance with the SWPPP. ' 6.5 REPORTING REQUIREMENTS 1 1 1 1 1 1 1 1 The results of each semi-annual sampling event will be presented in an annual monitoring report to Ecology. The annual monitoring report will include a summary of the data, a determination of compliance or non-compliance in accordance with the evaluation methods described in Section 6.4, and a copy of the laboratory data results and quality assurance analyses. Ecology will be notified within 7 days of any confirmed exceedance that triggers contingency plans. A copy of the SWPPP will be made available to Ecology upon its completion. The SWPPP will be completed within 180 days after final adoption of the Cleanup Action Plan and Consent Decree. Inspections and documentation required by the SWPPP will be reported and filed as described in the SWPPP. 6.6 CONTINGENCY PLAN TRIGGERS 6.6.1 SURFACE WATER An exceedance of the cleanup standard at the point of compliance, as determined by the evaluation methods described in Sections 6.4.2 will initiate the applicable contingency plan. docs jests Hance R doringt l ndf'iII\PDF maker - final Compliance Monitoring and Contingency Plan dots\Compliance Monitoring PIan1CMCP 11-10-DO.doc FINAL - March 2001 Page 6-3