R2018-13 Professional Services Agreement AECOM for Ellen and Division Inflow and Infiltration Reduction

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A.COM Exhibit A-7 Page City of Decatur,IL Ellen and Division Al Reduction Program • Street location • Date of inspection • Name of inspector • Cover type • Susceptibility to ponding • Area of ponding • Frame grade, condition, and seal • Presence and condition of internal boot • Step condition • Chimney type and condition, infiltration evidence, and severity of infiltration • Cone type and condition, infiltration evidence, and severity of infiltration • Barrel type and condition, infiltration evidence, and severity of infiltration • Bench condition, infiltration evidence, and severity of infiltration • Sketch showing pipes entering and exiting each manhole • Pipe sizes and material for all pipes entering or exiting each manhole • Underdrain pipes entering each manhole • Condition/seal of underdrain pipes At a minimum and with City approval, photographs will be taken as follows: • With the cover on, showing pavement/ground surface around the manhole and in the vicinity of the manhole. • With the cover opened, showing a view of the chimney and the chimney/frame interface • From the top of the manhole looking down. • All significant defects. Pipe orientation shown on the base map will be verified by the inspection crew for all manholes. Should the City prefer a hard copy paper form, a sketch will be completed showing the orientation/direction of all pipes entering or exiting the manhole along with pipe sizes and pipe material. AECOM stresses safety in the field for all of our personnel. Although it is not anticipated that the manhole inspection activities will require manhole entry at each manhole, This scope assumes "above ground" manhole inspections, though AECOM's field crews are confined space entry trained, and can be equipped with gas detectors, harnesses, tripods, and ropes for entry. Additionally, our vans are equipped with beacons, safety lights, cones, and reflective traffic warning devices to alert and protect the public and the employees. Traffic control will be completed utilizing the Manual on Uniform Traffic Control Devices, as published by the Federal Highway Administration. AECOM will coordinate with the City when working within the City's right-of-way. The final report will document system defects and sources of 1/I, including the results of the manhole inspections, including observed conditions, infiltration and/or inflow sources, and prioritized rehabilitation alternatives. Recommendations for future work, based on the results of the manhole inspections,will be included in the final analysis. Deliverables: • Manhole Inspection Results(see Task 8—Report) Task 6: DYE TESTING Dye testing is used to determine whether a particular inlet or fixture discharges storm water into the sanitary sewer. A quantity of dyed water is released at the selected locations while an observer