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Posted: January 26, 2018
Rapid City
Agenda Item Summary

Agenda Item Ref. #: PW013018-29

Agenda Item Title:

Appeal of Denied Exception Request from Renner and Associates to Waive the Requirements of Standard Specification Section 8.2, A, 4 and allow the use of HDPE pipe in lieu of K Copper for residential water services within the street right-of-way.

Origination Group:
Public Works Committee
Origination Meeting Date:
01/30/2018
City Council Hearing Date:
02/05/2018
Petitioner:
Renner Associates, LLC
Staff Contact:
Ted Johnson
Location:
Proposed Copperfield Vistas North Subdivision: Northwest of the intersection of Homestead Street and Copperfield Drive. Portions of Government Lot 4 and the SE¼ of the NW¼ of Section 4, T1N, R8E, BHM, Rapid City, Pennington County, SD
Agenda Item Summary:
On December 14, 2017, the City received a Request for an Exception to allow the use of High Density Polyethylene (HDPE) pipe in lieu of Type K soft copper tubing for residential water services from the water main to the curb stop within the street right of way (ROW) for the proposed Copperfield Vistas North Subdivision. The proposed subdivision is currently anticipated to include 85 townhome lots, 53 single family home lots and an unplatted future development area. Rapid City Standard Specifications 2007 Edition, Section 8.2, A, 4 states “Water service pipe 1 inch through 2 inches in diameter shall be Type “K soft copper tubing; …”. The May 2013 Technical Memorandum of Potential Considerations of HDPE Pipe, prepared for the City by Banner Engineering and Black and Vetch, Recommendations, Section A, ii, states “The following applications to allow HDPE as an alternate material are not recommended at this time; Water Service Lines, …”. (Excerpts from the noted report are attached for information, entire report is available upon request.) While the City has allowed individual property owners to utilize HDPE services on private property from the curbstop to the home the City has consistently maintained a positions of no HDPE service line material within the public ROW from the main to the curbstop. Additionally, the City’s Water Division does not support the installation and use of HDPE material in the City water system between the main and curbstops as it is a material they are not equipped to deal with in emergencies.

Funding Source & Fiscal Impact (if applicable):

Funding Cost Center

Recommendations:

Origination Recommendation Action:
Reject
Origination Recommendation Notes:
Uphold Denial of Exception Request and require copper water service material within ROW in accordance with Infrastructure Design Criteria and Standards.
City Council Options:
1 Uphold Denial of Exception Request and require copper water service pipe within the ROW 2 Grant Appeal and allow the use of HDPE water service pipe within the ROW between the main and curbstops in accordance with supplement criteria and indemnification.
Published in 2018 PW Agenda Items

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