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In addition, Stormwater Management, Inc. has committed to an extended services <br />agreement with Community Transit, offering training, on -site inspections/observations <br />and support as necessary for the CSF stormwater treatment system. See CSF Treatment <br />Systems letter dated Aug. 7, 1996 attached. <br />After one year of operation, failure of the compost filter system will be defined as the <br />occurrence of more than three overflows annually, It will be the responsibility of <br />Community Transit or their representative to monitor the filter and take corrective actions <br />before overflows occur. The occurrence of more than three overflows in a single year will <br />be considered evidence that reasonable maintenance and corrective actions are not <br />sufficient to keep the compost filter operating as required. <br />In the event of the failure of the compost filter system, as defined in the preceding <br />paragraph, Community Transit will remove the compost stormwater filter system and <br />construct a vegetated treatment cell in place of the compost stormwater filter. The <br />treatment cell shall be constructed to maximize the area originally set aside on the site <br />plan for the installation of the compost stormwater filter. This area is approximately 25 <br />feet by 100 feet, located in the northeast comer of the site. The construction of rockeries <br />and/or retaining walls will be considered practical and will be utilized to maximize the <br />treatment cell surface area and volume. The water depth in the treatment cell shall be <br />chosen to maximize the treatment volume while still providing conditions conducive to <br />the growth of biofiltering vegetation. If new stormwater treatments methods are available <br />at the time of failure of the compost filter, the City may give Community Transit the <br />option of replacing the compost filter with a facility of er than a vegetated treatment cell. <br />The City of Everett's and Community Transit's signatures on this letter serve as <br />acceptance of the above outlined maintenance, monitoring and contingency plans as <br />called for in the Determination of Non -Significance (DNS) SEPA #13-96 dated April 11, <br />1996. <br />John S ndzinski, Deputy irector <br />Planning & Marketing <br />Community Transit <br />qm7tr fo <br />Director of Engineering <br />City of Everett <br />