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HomeMy Public PortalAboutr 17-024r" of Q[arfad., No 17 -24 Dale of Adoption Fehi�.y 9, 201 AUTHORIZING A PROFESSIONAL SERVICES CONTRACT FOR ENGINEERING SERVICES WITH MOTT MACDONALD — CARTERET SANITARY SEWER FORCE MAIN EMERGENCY REPAIR PROJECT N WHEREAS, the Borough of Carteret is in need of specialized engineering services in connection with the Carteret Sanitary Sewer Force Main Emergency Repari Project; and WHEREAS, the Borough's Consulting Engineers, Mott MacDonald, possess the requisite skill and expertise to provide said services; and WHEREAS, Mott MacDonald has submitted a proposal to provide said engineering services at a total cost not to exceed $131,000.00; and WHEREAS, the Mayor and Council have reviewed said proposal; and WHEREAS, the Chief Financial Officer has certified that funds are or will be available for said purpose. NOW, THEREFORE, BE IT RESOLVED by the Mayor and Council of the Borough of Carteret, County of Middlesex, State of New Jersey, as follows: 1. That the proposal from Mott MacDonald for engineering services related to the Roosevelt Avenue Pump Station Force Main Project, in a total amount of $131,000.00 billable in accordance with Mott MacDonald's existing contract with the Borough is hereby approved. 2. That annexed hereto is a copy of said proposal. 3. That this action is approved as an award of a professional services contract pursuant to N.J.S.A. 40A:11- 5(1)(a) in accordance with the Borough's Fair and Open Process as authorized by law. Adopted this 9 day of February, 2017 and certified as a true copy of the original on February 10, 2017. KATHLEEN M. BARNEY, MMC Municipal Clerk KE, CORD OF COUNCIL VOTE COUNCILMAN YES NO NV A.B. COUNCILMAN YES NO NV L'ELLINO X JOHAL X DIAZ X ICIzUM X DIMASCIO X NAPL X X - Indicate Vole All - Abscut NV - Not Voting XUR - Indicates Vote to Overrule Veto Adopted at a Meeting of the Municipal Council 1/ M , MOTT GH OF C ", MACDONALD �F�, To John DuPont, PE, PP, CME JXH 7';1 From Brian T. Dougherty, PE Date November 29, 2016 /�'S OFF�� Reference - Page 1 of 5 CC Eric C. Betz, PE, BCEE, CME Peter E. Kocsik, PE Subject Borough of Carteret Roosevelt Avenue Pump Station Force Main Recommended Course of Action Background MEMO The Borough of Carteret (the Borough) owns and maintains the Roosevelt Avenue Pump Station force main, which is 27 -inch diameter prestressed concrete cylinder pipe (PCCP) force main with a total length of approximately 16,000 linear feet (or approximately 3 miles). The force main conveys the Borough's wastewater to the Middlesex County Utilities Authority (MCUA) for treatment. The force main was constructed in 1989 during the construction of the Roosevelt Avenue Pump Station and decommissioning of the Wastewater Treatment Plant that the Borough once owned and operated. The Roosevelt Avenue Pump Station is the Borough's main pump station and is the most critical pump station in the system since it receives all of the wastewater generated and collected within the Borough. Due to the critical nature of this wastewater infrastructure, the station and the force main must remain in continuous service. The Roosevelt Avenue Pump Station contains three pumps, each rated for 4,600 GPM (6.625 MGD). The station reportedly does not typically operate with just one pump. Its typical flow rate with two of the three pumps operating is approximately 6,945 GPM (10 MGD). The 27 -inch diameter force main is constructed of PCCP that was installed over 25 years ago. PCCP pipe relies on the prestressed wires wrapped around the steel cylinder and concrete coatings of the pipe to provide much of the pipe's strength. Historically, a certain grade of metal wire was used in the pipe manufacture which has now resulted in a failure mode called embrittlement. This pipe with this type of wire was only manufactured for a few years. Although most PCCP pipe is speculated to have a service life in excess of 50 years, certain vintages of PCCP have been known to fail dramatically due to the wire failure. The Borough's 27 -inch PCCP force main has experienced failures in the past several years with the most recent prior failure occurring in 2014. At that time, a pin -hole leak was identified in the force main. However, it was not determined what caused the exact mode of failure although hydrogen sulfide is suspected. Force Main Failure Location A force main leak / failure was discovered on or about November 22, 2016 in the backyard of a private residence at 11 Ned Court in Woodbridge Township. This section of the force main is at the downstream end of the overall alignment and is approximately 1,300 linear feet from the point where the force main discharges and connects to a gravity sewer. At the failure location (referenced as Station 16 +80), the force main traverses through a 15 -foot wide permanent sanitary sewer easement through the residential property. The location of the leak is at a higher M M MEMO MOTT MACDONALD To John DuPont, PE, PP, CME Date 11/29/2016 Page 2 of 5 elevation as compared to the gravity sewer and if the Roosevelt Ave PS shuts off during night time low flows there is the potential that this section of pipeline could be exposed to air, which can result in internal corrosion. Force Main Failure Mode The mode of failure is anticipated to be along the top of the force main pipe due to hydrogen sulfide corrosion of the internal concrete core and inner steel cylinder pipe. Once a pin hole develops through the steel cylinder it will push through the outer wire wraps and concrete layer. Based upon our knowledge and prior experience evaluating and designing repairs and rehabilitation of this type of force main, it is suspected that hydrogen sulfide is present in the force main especially at the end of the force main where the travel time is longest. At the high points, it is suspected that hydrogen sulfide gas pockets are forming and possibly extending for hundreds of feet. During normal flow conditions, it is likely that the force main is fully pressurized to the end. However, when the pump station is operating at minimum flows, it is suspected that the force main operates as a pressurized full -pipe upstream of the alignment's high point, which is located within the PSE &G easement (Station 18 +60), but downstream of the high point, the force main could operate under gravity flow conditions. At the high point location, there is an air release valve in a manhole structure. Further downstream of this location along Wesley Place (Station 7 +80), there is a second local high point and air release manhole. It has not been determined if the air release valves are functioning properly, which would vent out the hydrogen sulfide gas. We understand that the at least one of the air release valves has been taken offline. It is anticipated that there could be additional hydrogen sulfide corrosion damage on either side of the two high points. Based on a review of the force main profile on the design plans (note that no record plans are available), the area of concern is between Station 5 +75 and Station 10 +50 at which point the top of the pipe is above the invert elevation of 13.30 at the high point at Station 7 +80. The other area of concern between Station 16 +25 and Station 22 +00 at which point the top of the pipe is above the invert elevation of 14.00 at the high point at Station 18 +60. Short -Term Provisions Taken by Borough It has been observed that while the pump station operates with only a single pump, there have been no sewage discharges observed at 11 Ned Court. We suspect that under a single pump operation the force main is not pressurized at the leak location or is only leaking minimally into the soil. It is suspected that, if it becomes necessary to operate the station at full capacity (with two or three pumps in service), the force main would operate under pressure for the entire alignment and it would likely exacerbate the leak at the identified location. The Borough is required to report the discharge to NJDEP in accordance with State regulations. It is understood that the Borough contacted NJDEP on November 23, 2016 to report the discharge and a case number was assigned. M M MEMO MOTT MACDONALD To John DuPont, PE, PP, CME Date 11/29/2016 Page 3 of 5 Recommended Course of Action The overall plan for the Borough to address this leak and this section of the force main is a four -step process: 1. Prepare an access point to the force main to allow for internal inspection. 2. Perform an internal pipe inspection. Investigate the affected area to determine if the leak is due to internal corrosion or a wire failure. If the leak is due to internal corrosion, determine if it limited to a specific defined area (5 -10 feet) or is the length of damaged pipe more extensive. After assessing the type and extent of pipe damage, select a method of repair or replacement. Options available include a spot replacement with 10 to 20 feet of pipe, CIPP lining of greater distances 300 to 500 feet, full replacement in the same alignment, full replacement in an alternate alignment. 3. Step up the appropriate bypass system to facilitate the selected repair. 4. Perform the repair. The four steps are explained in further detail below: Step 1 — Force Main Pre - Inspection The Borough has engaged their on -call utility repair contractor (B &W Construction) to cordon off the area around the leak and to prepare for the internal force main inspection. The proposed inspection procedure and equipment will require a 20 -inch diameter opening to gain access to the force main. Each air release manhole consists of a 27 -inch by 24 -inch tee with a tapped blind flange that is connected to the air release valve. The contractor's investigative and preparation work over the next week should include the following: • Pumping groundwater out the air release manholes; • Inspecting the 24" blind flange and air release valve on the 27" by 24" tee; • Preparing for the removal and replacement of the 24" blind flange flange by replacing every nut and bolt on the blind flange; and • Preparing the manhole structure to ensure the opening is a minimum of 20" for the insertion of the inspection equipment. This may require removal of the top slab or cone section of the chamber. Step 2 — Force Main Inspection It is recommended that the Borough conduct an internal inspection of the force main prior to taking any measures to install bypass piping. This step is critical for a number of reasons: M M MEMO MOTT MACDONALD To John DuPont, PE, PP, CME Date 11/29/2016 Page 4 of 5 • The interior of the force main must be inspected to determine if the proposed location of the line -stop valve (for bypassing) will be suitable and will provide for a complete seal of the pipe; • The interior condition of the force main must be inspected to determine the extent of corrosion and understand the extent of rehabilitation and /or replacement work necessary; • Although the suspected cause of failure is internal corrosion cause by hydrogen sulfide, the overall condition of the force main should be inspected to ensure there are no issues with the prestressing wire; and • The actual location (horizontal & vertical alignments) of the force main must be confirmed since no record plans exist for the force main. For this effort, we will utilize a specialty subconsultant for the internal inspection utilizing their an internal crawler system. This system is an advanced, remotely operated robotic crawler with a modular -based set up that allows it to be equipped with multiple tools needed for pipe inspection. For this inspection, the system will be provided with the following capabilities: • High definition digital pan - tilt -zoom closed circuit television (CCTV) for live video stream of the pipeline during the inspection effort; • High speed pipe - profiling SONAR to measure the pipeline's size, shape and level of corrosion. This process is performed on submerged areas of the force main; and • Geographic mapping using modular high end inertial measurement unit to allow the force main to be marked out and the depth of the pipe to be determined. This inspection will be performed at night during low flows when the pump station can be taken out of service. It is currently anticipated that this inspection can be performed within a 3 to 4 hour shut -down window. The CCTV data will be viewable during the actual inspection work. The results of laser /sonar profiling may take 2 to 3 days to convert the digital data into a footprint of the surface profile of the pipeline. (An example of the data to be retrieved is attached). After understanding the pipe condition and extent of pipe damage, a final decision can be made with regards to the most effective type of repair and the extent of bypassing required. Step 3 — Line -Stop Valve Installation and Temporary Bypass Pipe Installation After the selection of the repair method a temporary bypass scheme will be developed. A line stop will be installed to temporarily stop flow and isolate the downstream section of the force main. After the line stop is installed, the bypass piping would then be installed. For this application, we recommend considering a line stop with an integrated bypass housing. M M MEMO MOTT MACDONALD To John DuPont, PE, PP, CME Date 11/29/2016 Page 5 of 5 Once the line -stop valve is in place, the bypass piping can be installed. The bypass piping would be temporary HDPE or fusible PVC piping installed on the ground surface with provisions to ensure proper thrust restraint and adequate protection. If a full bypass is required, the temporary bypass piping alignment would extend from the connection to the existing force main and through the PSE &G property (Block 666, Lot 23.02) to Port Reading Avenue (Middlesex County Road 604). The temporary main would then be installed along Port Reading Avenue to the intersection with Old Road and onto New Jersey Turnpike Authority (NJTA) right -of -way. It would traverse the NJTA right -of -way to the manhole where the flow transitions to gravity flow, which is located on Wesley Place. The total length of the bypass piping would be approximately 3,325 feet. A temporary easement will be required through PSE &G property (Block 666, Lot 23.02). Also, approvals will be required from Middlesex County Engineering for the installation of the temporary piping through the Port Reading Avenue right -of -way. Additionally, approval would be required from NJTA and a license to cross agreement may be required for installation of the temporary bypass piping within the NJTA right -of -way. It is recommended that the Borough engage these entities (PSE &G, NJTA and Middlesex County) as early as possible as their approvals will be critical. Alternate bypass piping schemes may be considered based on the final selected repair approach. Step 4 — Force Main Rehabilitation or Repair As recommended in step 2, the Borough will undertake the repair, in -situ rehabilitation or replacement of sections of the force main. Budgetary Estimate It is understood that the Borough intends to authorize emergency funding to undertake the necessary repairs to the force main. Step 1 and Step 3 outlined herein will be performed primarily by B &H Contracting with support from the Borough and potentially other specialty subcontractors. Step 2 will be performed by Mott MacDonald with support from a specialty subconsultant who will conduct the inspection. For budgetary purposes, the Borough should plan to budget $60,000 to perform Step 2. Following the completion of this step, we will provide the Borough with a report summarizing the findings and provide recommendations for the proposed repairs to be performed under Step 4. �N } OFF:CE OF KATHLEEN K BARNEY, RNIC /C;11C �IXUNICIP_�I, CLERX L 44 Ji f Garizrt>f MIOOLESEX COUNTY �- �ersE� TO: Patrick DeBlasio, _ Treasurer Borough of Carteret REQUEST FOR CERTIFICATION OF AVAILABLE FUNDS: For: Authorizirg a Professional Services Contract for Frgineerir>g Services with %tt nr ponald- Roosevelt Averue Pimp Station Force Main Name of Account: r 131, 00� OCR AMOUNT TO BE ENCITHRERED: Total cost not to exceed, eS0.00 billable with MMT MKDONNLD_ e c tug cont with the Borough. KATHLEEN M. BARNE Municipal Clerk CERTIFICATION OF. AVAILABILITY OF FUNDS I, Treasurer of the Borough of Carteret, do hereby certify ,that_ there are sufficient funds available in the current budget `to enable the Municipal Council to authorize the entering a Contract between the Borough of Carteret and: The funds available for this contract are in the Budget, in the account of: in the amount of: By this certification, I have hereby encumbered the above named account for the amount of the contract ending Council action. �w Patr ck DeBlasio, Treasurer DATE: X/)- /i , AFFIDAVIT OF PUBLICATION The following is a true copy of an Ordinance or Resolution of the Borough of Carteret that has appeared in the Home News Tribune, a newspaper which is printed in Freehold, New Jersey and published in Neptune, in said County and State and of general circulation in said county. One 1 time(s), once in each issue as follows: March 10, 2017 Kathleen M. Barney, MM Municipal Clerk BOROUGH OF CARTERET NOTICE OF CONTRACT AWARD The Borough of Carteret has awarded a contract without competi- ti ve bidding as a Professional Service pursuant to N.J.S.A. 40A:11 -5 (1) (a). This contract and the resolution authorizing it are available for public inspection in the Office of the Municipal Clerk. This action is approved as an award of a Professional Services Con- tract pursuant to N.J.S.A. 40A:11- 5(1)(a) in accordance with the Bor- ough's Fair and Open Process as authorized by law. Awarded To: Mott MacDonald Services: Engineering Services in connection with the Sanitary Sewer Force Main Emergency Repair Project Resolution: #17 -24 Cost: Not to exceed $131,000.00; Hourly rate according to rate schedule. Kathleen M. Barney, MMC ($18.48) Municipal Clerk Sworn and subscribed before me this day of CARMELA POGORZELSK. NOTARY PUBLIC OF NEW JERSE My Commission Expires 91271200 Ad Number: 0001982225 Run Dates: 03/10/17 BOROUGH OF CARTERET JUGf1 NOTICE OF CONTRACT AWARD c���, U� The Borough of Carteret has awarded a contract without competi- tive bidding as a Professional Service pursuant to N.J.S.A. 40A:11 -5 (1) (a). This contract and the resolution authorizing it are available-) for public inspection in the Office of the Municipal Clerk. This action is approved as an award of a Professional Services Con -� tract pursuant to N.-I.S.A. 40A:11- 5(1)(a) in accordance with the Bor- ', ough's Fair and Open Process as authorized by law. ' r, �7 Awarded To: Mott MacDonald Services: Engineering Services in connection with the Sanitary Sewer Force Main Emergency Repair Project Resolution: #17 -24 Cost: Not to exceed $131,000.00; Hourly rate according to rate schedule. Kathleen M. Barney, MMC ($18.48) Municipal Clerk 001982225 -01