CC PACKET 01271987 - Laserfiche WebLink

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City of St. Anthony Page 3 December 24, 1986 • If the pressure gauge confirms excess losses, the City will be advised of the losses, and a conference held to discuss further investigation and/or remedial actions to the forcemain. 6. The existing wet well capacity will be checked and compared to Ten States Standards design criteria. If the wet well contains less volume than desirable, the implications of continuing with the existing wet well versus increasing wet well size will be investigated. 7. The feasibility of replacing the existing pumps with new .constant speed or variable speed units will be investigated. A portion of this investigation will be an evaluation of repairs necessary to maintain the metal lift station structure in a safe, leak-free condition for the design life of the station. 8. The feasibility of abandoning the existing station to construct either a new wet well/dry well station similar to existing or a new 'submersible station will be investigated. Capital cost, operation and maintenance cost and serviceability will be investigated for each alternative. 9. A preliminary engineering report will be prepared evaluating both the present wastewater flow and anticipated future flow at the lift • station. A cost analysis will be. made comparing rehabilitation of the existing station, replacing the existing station with a new wet well/dry well station, and replacing the existing station with a new submersible station. The preliminary report will be reviewed with the Director of Public Works, and revisions made as necessary. 10. A final engineering report discussing the above evaluations will be prepared. All information and materials (text, maps, charts, graphs, tables and descriptive material) will be assembled into a final engineering,report. The final engineering report will be presented to the City Council and .other governmental bodies as desired by the City. Time Schedule Several unknowns exist which will affect the schedule at which the study may proceed. If preliminary flow studies prove the existing flow meters to be accurate,' additional flow monitoring will not be required. If the `forcemain evaluations�show that the forcemain is not subject to undue headloss, the study may readily proceed to the lift station evaluation stage. In this case, the total time from the notice to proceed to submittal of the preliminary engineering report will be 60 days. If the wastewater flow must be measured with portable flow meters, it is anticipated that monitoring will have to occur,during February, March and possibly April. In this case, it is anticipated the study cannot be completed •" until June 1987.