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November 1, 2023 WiDSETH <br />Design, Bidding, and Construction Phase Services for <br />Main (Gravdahl) Lift Station and Forcemain Improvements <br />City of Pequot Lakes <br />Page 4 <br />• Controls and the control panel. <br />Wet well cleaning and concrete repair. <br />NOTE: We are anticipating rehabilitating the LS wet well (big, <br />deep manhole) and the valve vault structure. <br />Should further review indicate they are not salvageable, we may <br />need to replace them. <br />If this becomes the case, we will review with Staff, the MPCA, the <br />Council, and the funding assistance agencies, as necessary, for <br />a change in scope. <br />• Level transducer and floats. <br />• Base elbows. <br />• Pump guide rails. <br />• Pumps. <br />• Concrete cover and aluminum hatch. <br />• Valve vault and piping. <br />• Salvage any of the existing to the City? <br />14. Obtain field inventory and measurements of existing LS and valve vault components and <br />piping. <br />15. Prepare a base map drawing of the existing LS and valve vault conditions, including the site. <br />16. Prepare detail and section sheets for the proposed LS and valve vault improvements. <br />17. Prepare plan drawings for the proposed LS and valve vault improvements. <br />18. Prepare technical specifications for the proposed LS and valve vault improvements. <br />19. Layout proposed forcemain replacement. <br />Our initial thought is that we would attempt to install a new forcemain parallel to the existing <br />forcemain. <br />This would permit keeping the existing forcemain in operation — i.e., the only forcemain from <br />the City's entire wastewater collection system out to the WWTF. <br />After the new forcemain was tested and was operational, our initial thoughts are to fill the <br />existing forcemain with flowable sand and abandon it in place. <br />As we obtain more information and get into design decisions, if there needs to be an <br />adjustment of scope, we will review with Staff, the MPCA, the Council, and the funding <br />assistance agencies, as necessary. <br />NAMarketing Dept\Proposals100 Letter Proposals12023 Letter Proposals\Pequot Lakes LS and FM1Pequot Lakes - LS and FM Design and Construction <br />- 20231101.docx <br />