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HomeMy WebLinkAbout1A, Venus easement sanitary sewer main repair EN HILLS Request for Council Action 1A -----------­-­-- Prepared By: Kristine Giga, Civil Engineer Council Meeting Date: May 17, 2010 Venus easement sanitary sewer main repair Budgeted Amount: Estimated Actual Amount: Funding Source: $40,000 $4,700 -$9,890 Sanitary Sewer Enterprise (for maintenance of utilities) Fund Recommendation: 1. Authorize staff to contract with American Liberty Construction, Inc., to repair sanitary sewer main on the Venus easement. ---- _------------- ---- -- ---- - ............ _-- Supporting Documents: 1. Memorandum from City Staff dated May 17, 2010. 2. Summary of quotes. 3. Photos of project area. 4. Figure of project area. EN HILLS MEMORANDUM DATE: May 17, 2010 TO: Honorable Mayor and City Council Members Patrick Klaers, City Administrator - FROM: Kristine Giga, Civil Engineer SUBJECT: Sanitary Sewer Repair-Venus Avenue Easement Background/Discussion Staff has identified a sanitary sewer repair that is needed on the main that is located parallel to the Elmer L. Andersen Trail Connection south of Venus Avenue. This was brought to the May 10 City Council meeting for discussion. Staff obtained quotes from three contractors, which were not yet available at the time of the meeting. The agenda item was tabled to May 17, so that the City Council could evaluate the quotes and select an alternative. Quotes were obtained for two alternatives. One alternative is to replace the main line in its current location. This alternative will require the removal of the large cottonwood trees directly over the existing sanitary sewer. The second alternative is to construct a new sewer line around the large trees by constructing two new manholes. The main line would have a jog, which is less desirable from a maintenance perspective, but would minimize tree removal. Some smaller trees and undergrowth would need to be removed, but the large cottonwoods would be saved. Attached are photos of the area, as well as the figure showing the needed repair. Financial Implications A summary of the quotes received is attached. The lowest quote was provided by American Liberty Construction, Inc., who is the contractor for the Elmer L. Andersen Memorial Trail Connections project. The quote provided to remove the cottonwoods and replace the sanitary sewer in place is $4,700. The quote to realign the sanitary sewer and leave the cottonwoods in place is $9,890. These quotes are significantly less than staffs estimates. The cost for this repair will be paid for using Sanitary Sewer Enterprise Funds. $40,000 is included in the 2010 budget for maintenance of utilities; to date, $3,807.73 has been spent. Council Action Requested Authorize staff to contract with American Liberty Construction, Inc., to make necessary repairs to the sanitary sewer main along the easement off of Venus Avenue. Provide staff direction for the preferred alternative. City Council Meeting 11Metro-inet.uslardenhills\PR&PW1EngineeringlCouncil_Actions1201015-17-I OMemo_VenusSewerRepair.doc Page 1 of 1 w O O O O O O d d d d N -4 Vi -4 N to O U o &3 IS fsr as es fs4 &S o 0 0 0 0 0 0 0 cu o o e e e o 0 0 V tn N r-�, rM b E-•� SR y3 VI 6Fi fR 64 6P- H4 y ten nen o o n n h o o von o? sn Ol CA O S1 N Oft SR f/t fft f!3 tAl 5F} b4 5F} bR La v o vi o o vi e c e R. C ff L) &3 y9 H9 65 69 fR VI fft O C O O O O O O 4 G o o o c a a a o 0 0 0 •u � e o a M ,-i oo � a M t+ _ v� ^r C Etl U ° F" {f} QS (A fi} cR Vj- r/9 V)r 5n fR v p © o 0 0 0 0 0 0 a o 0 0 0 0 0 0 0 tn lf� en •� � M N 3 o o � H w p k O G O O O O G O un � d DO � U a A N .� cu L k O W W u r, ro u « p b v] C ir�7 :+ � Cd H �� � • y s� �z/rp '- �- 1 4 a b,' V t_ � � M ss � onwoods existing tary sewer r ■ _ . I • Fy `r4'4 j k erH1 W F� 5:�` s t o ,gip IEFj S 1V w � c r �` ............. . .. ....... _ Cottonwoods :. over existing Approximate sanitary sewer location of existing sanitary sewer Existing - - T sanitarysewer Approximate location of potential re-alignment View towards the north } a , .. .. �>xlaT''t^nv:r-��c�mr-r.Tnrs±•,.+r.-� 'u � � ;. I