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City of Ann Arbor SSWWEP - Citizens Advisory Committee Coordination — City of Ann Arbor

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1.65 -P- Could fixing bad manholes and sewer pipes in some areas account for the flow removal results?

Posted by Lori Byron on 24 Jan, 2014
Category: Category 1 - SSWWEP Questions and Presentations

Frank Burdick’s Log Number: N/A
Submitted by: December CAC meeting
Category (1,2,3): 1
Status: Pending
Estimated date to address: February 6, 2014

Q. 1.65 Could fixing bad manholes and sewer pipes in some areas account for the flow removal results? 

A. It is possible that sewer and manhole repairs could impact system flows. Typically a substantial program is needed to make a significant impact on wet weather flows, and the City did not conduct a substantial program. The City keeps records of the locations of these types of repairs, and those records will be reviewed to verify whether any repairs were done in these areas.

Comments

Frank Burdick on 24 Jan, 2014:

Who provided this response?  Name and date.
Regarding.. "and the City did not conduct a substantial program. The City keeps records of the locations of these types of repairs, and those records will be reviewed to verify whether any repairs were done in these areas."

Please provide a sample report of this repair history in the Morehead area.

Joe Conen on 25 Jan, 2014:

Would a targeted approach make sense? Consider going after areas where streets are expected to flood during major rain events. Sealing sanitary manholes in these areas may help "cut the top off" I&I during the worst events.

Frank Burdick on 27 Jan, 2014:

The legal cases that A. Elias references in her written memo listed legal cases where a City was found negligent or not immune from liabilty because the City could not prove that they were taking care of their sewers pipes.  There is another related question buriied somewhere here in b-camp, it's note below:

We, on the CAC, really need to know if the city has been inspecting and repairing the system according to industry standards and not just relying on FDDs to reduce flow and capacity. What are the industry standards and who is to decide what is appropriate?   

I would like to see a sample of the records for the Inspection and repairs  for the Morehead area. for the past 10 years. You may want to see the record from your area too, especially if you are one the CAC members that actually live in a Target Neighborhood.

13 Can the City provide a history of all efforts to "camera inspect" and repair existing sanitary sewers since 2001?

11/12/2013

Lori Byron on 13 Feb, 2014:

[CITY]

The City has electronic records of all sanitary sewers that have been televised since summer of 2006. Please see attached report (Q.2.38_Report of CCTV Work Since 2006.xls).  Prior to summer of 2006, records were not kept electronically. Records are archived and are less easily searchable. The same applies for repair work performed on the system. All the electronic records of repair work performed on the system is shown on the attached “Citywide Sanitary System Improvements.PDF” map.

Mr. Conen also asked: "Would a targeted approach make sense? Consider going after areas where streets are expected to flood during major rain events. Sealing sanitary manholes in these areas may help "cut the top off" I&I during the worst events."

[CITY] The City has sealed manholes in the past in areas of known street flooding issues, and is continually reviewing and implementing sealing measures, where possible. This is something that can be considered as part of the alternatives analysis.