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HomeMy WebLinkAboutItem 7 - Jane Road 201 System - Approve Soil Testing AGENDA MAYOR & COUNCIL COMMUNICATION -- page 1 -- DATE: February 24, 2015 CONSENT ITEM # 7 AGENDA ITEM: Jane Road 201 Wastewater System (Tri-Lakes Remote D) – Approve Soil Testing and Monitoring Plan SUBMITTED BY: Ryan Stempski, Assistant City Engineer THROUGH: Dean A. Zuleger, City Administrator REVIEWED BY: Jack Griffin, City Engineer Mike Bouthilet, Public Works Cathy Bendel, Finance Director SUGGESTED ORDER OF BUSINESS (if removed from the Consent Agenda): - Questions from Council to Staff ............................................. Mayor Facilitates - Public Input, if Appropriate………………………………….Mayor Facilitates - Call for Motion ............................................................... Mayor & City Council - Discussion ....................................................................... Mayor & City Council - Action on Motion .................................................................... Mayor Facilitates POLICY RECOMMENDER: Engineering/Public Works. FISCAL IMPACT: $6,400.00. The estimated cost to coordinate, manage, and complete the recommended soil testing and monitoring plan for the Jane Road 201 Wastewater System is $6,400. This includes $3,600 for Soil Investigation and Design to install 2 piezometers to track groundwater movements, to excavate and review the distribution boxes, and to prepare a report on the findings. This also includes $2,800 for FOCUS Engineering to coordinate the work of Soil Investigation and Design, coordinate the work with Public Works to make the physical excavations on the site, and to work with Washington County regarding the code requirements and corrective action plan. Staff will track all costs associated with this work. As a potential public improvement the total project costs may be assessed to the benefitting property owners. City Council Meeting [Consent Agenda Item 7] February 24, 2015 -- page 2 -- SUMMARY AND ACTION REQUESTED: The City Council is respectfully requested to approve a soil testing and monitoring plan for the Jane Road 201 Wastewater System to be completed by Soil Investigation & Design, Inc., Public Works, and FOCUS Engineering. If removed from the consent agenda, the recommended motion for this action is as follows: “Move to approve the soil testing and monitoring plan on the Jane Road 201 Wastewater System (Tri-Lakes Remote D) in the not to exceed amount of $6,400.00.” LEGISLATIVE HISTORY/BACKGROUND INFORMATION: At the November 18, 2014 City Council Meeting, staff was directed to investigate potential repair and/or replacement alternatives for the Jane Road 201 Wastewater System (Tri-Lakes Remote D). Staff was approved to spend an amount not to exceed $5,000 in total costs for this investigation. A report of alternatives was prepared by Soils Investigation and Design, Inc., which included a mound system and a pre-treatment system to rehabilitate the existing site. The report identified that rehabilitating the system on site was not feasible due to several site constraints, and if the site had been feasible the costs would range between $90,000 and $110,000. With several issues now discovered on the existing site, staff did does not recommend continuing with on-site replacement alternatives. Staff has also been working with Washington County to better understand the code compliance issues related to the Jane Road 201 wastewater system. Through these efforts it is been identified that additional site testing and monitoring work could provide evidence that the system is working as intended. Staff worked with Washington County and Soil Investigation and Design, Inc. to define the following additional tasks to determine the performance and life expectancy of this system: 1. Review the distribution boxes with Washington County and City Staff to determine characteristics of distribution. 2. Review an excavation pit six feet deep along the south side of the drainfield to determine soil layering and other characteristics. 3. Conduct two soil borings to three feet below the bottom of the existing trench and place two piezometers with data loggers in the borings. Data will be collected on a quarterly basis for a minimum of 12 months. Soil Investigation and Design, Inc. provided a proposal in the not to exceed amount of $3,600 to complete the scope of work identified above (see Attachment No. 1) with Public Work staff completing the trench box excavation work. The additional testing and monitoring is recommended to identify a short term solution for the existing properties currently connected to the system. A long term solution will also need to be researched by the City. This long term solution would potentially include a complete replacement of the existing system on a separate property to be acquired by the City. The Planning Department is in the process of identifying possible sites for this solution. City Council Meeting [Consent Agenda Item 7] February 24, 2015 -- page 3 -- RECOMMENDATION: Staff is recommending that the City Council consider approving, as part of the Consent Agenda, a soil testing and monitoring plan for the Jane Road 201 Wastewater System to be completed by Soil Investigation & Design, Inc., Public Works, and FOCUS Engineering. If removed from the consent agenda, the recommended motion for this action is as follows: “Move to approve the soil testing and monitoring plan on the Jane Road 201 Wastewater System (Tri-Lakes Remote D) in the not to exceed amount of $6,400.00.” ATTACHMENT(S): 1. Soil Investigation and Design, Inc. Proposal Dated January 23, 2015.