THE LEAVENWORTH SANITARY SEWER SYSTEM EXPERIENCES NUMEROUS BACKUPS AND OVERFLOWS OF SANITARY SEWAGE RESULTING FROM BLOCKAGES AND DEFECTS IN THE COLLECTION SYSTEM CAUSED BY INSUFFICIENT MAINTENANCE AND LACK OF TIMELY REPAIR OR REPLACEMENT OF DEFECTIVE COMPONENTS. THE CITY OF LEAVENWORTH FAILED TO FULLY DEVELOP AND IMPLEMENT A PLAN FOR LONG-TERM OPERATION AND MAINTENANCE OF POST-CONSTRUCTION STORMWATER BMPS. IN ADDITION TO IMPLEMENTING CORRECTIVE ACTIONS FOR THE CITED VIOLATIONS, THE CITY OF LEAVENWORTH WILL PAY A CASH PENALTY OF $46,200 AND COMPLETE A STUPPLEMENT ENVIRONMENTAL PROJECT TO CONSTRUCT IMPROVEMENTS TO REDUCE THE DISCHARGE OF POLLUTANTS INTO MS4 BY MODIFYING CURB INLETS, IMPROVING UPSTREAM DRAINAGE CHANNELS TRIBUTARY TO THE MS4 AND CONSTRUCTING TWO BIOSWALES. THE SUPPLEMENTAL ENVIRONMENTAL PROJECT COST IS $38,800.