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HomeMy WebLinkAboutItem 09 - Water and Wastewater Projects MEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: BRUNO RUMBELOW, CITY MANAGERf��� MEETING DATE: JANUARY 6, 2015 SUBJECT: ORDINANCE AMENDING FY 15 CAPITAL IMPROVEMENTS BUDGET; CHANGE ORDER #1 —STATE HIGHWAY 121 WATER AND WASTEWATER RELOCATION & EMERGENCY SEWER REPAIR RECOMMENDATION: City Council consider adopting an ordinance amending the adopted Capital Improvements Budget for FY 15, approving Change Order# 1 to the construction contract for the State Highway 121 Water and Wastewater Relocation Project with Wilson Contractor Services, LLC, in an amount of $149,645.00, appropriate funding in an amount of $90,000.00 for Change Order # 1 and Sidewalk, Landscaping and Irrigation Repairs performed under current annual contracts, authorize staff to execute said change order, and take any necessary action. FUNDING: Funds are programmed in the un-appropriated Utility Fund Balance and will be transferred to: Account 200-48930-534-8-000030WA for the Water Relocations Account 200-48940-534-8-000031 SW for the Wastewater Relocations and associated Sidewalk Repair, Irrigation Repair and Landscaping Replacement BACKGROUND: The State Highway 121 Water and Wastewater Relocation Project construction contract was awarded to Wilson Contractor Services, LLC on November 19, 2013 in the amount of $1,804,247.74. Change Order# 1 addresses items detailed below: Routine Contract Chanqes • $4,480.00 for the installation of two additional 12" gate valves at the contract unit price. This cost increase represents an increase to the original project cost of 0.25%. Emer enc Re air • $82,782.00 for an emergency repair made to the sanitary sewer system at the southwest corner of Dooley Street and Dove Loop. Staff responded to a sanitary sewer leak on September 5t" only to discover a complete failure of an existing 18" R:WGENDA�2015\01-06-15\SH121 Sect 13 Utility Reloc Constr CO 1.doc sanitary sewer pipe. The pipe had collapsed due to hydrogen sulfide gas corrosion occurring within the concrete sewer pipe. City staff evaluated the failure and determined a plan for repair and rerouting of the failed pipe section. Wilson Contractor Services was working on the SH 121 project under the existing contract with the City, could undertake the work quickly and provided an acceptable proposal for the repair work. City staff had reviewed the needed repairs with a second contractor under contract for City utility relocations through NorthGate Constructors, but they were not available to respond quickly. City staff reviewed the cost breakdown and deemed the unit prices to be competitive. Wilson was directed to proceed on September 10, 2014, began work within two days and was substantially complete within one week. This prompt response by Wilson significantly reduced the City's exposure to a potentially significant sanitary sewer spill into a downstream neighborhood and the Vineyards Campground. Opportunities — Contract Still in Effect • $32,570.00 to install an access vault to the sanitary sewer force main at the Hilton Lift Station. The installation of the vault provides access to the force main line for future wastewater stream treatment to address septic conditions and hydrogen sulfide gas generation. The installation of a system to address the wastewater stream problem is included in the upcoming $10 Million debt issue for Utilities. Installing this vault now allows us to: o use a small amount of existing utility funds, o take advantage of a contractor still under contract with the City o reduces the cost compared to bidding such a small project by eliminating the need for separate insurance, bonding, bidding documents and mobilization o to perform a trial run of one or more systems that we think can provide us the results we are looking for. This force main is a 24" diameter line just under 3.5 miles long. The wastewater turns septic due to the lengthy holding time (24 to 30 hours) within the force main. The waste releases hydrogen sulfide gas which is causing substantial corrosion to our existing collection system downstream. Installation costs were requested from three contractors that we currently have open contracts with (Bandera, Gratex and Wilson), Wilson was the only contractor to submit a price for the work, which is reasonable for the required size (Traffic rated vault 8'W x 6'L x 9' H). • $29,813.00 for a water line bore at 1020 S. Main Street. The Street Division is planning to undertake a storm drainage project at this location in the coming months to collect surface water runoff from the dead end of Danief Street and convey it in a storm drain pipe to the existing drainage system on the west side of Main Street. This will require an open cut excavation across the property at 1020 S. Main Street. While we are on the private property in a R:WGENDA�2015\01-06-15\SH121 Sect 13 Utility Reloc Constr CO 1.doc dedicated drainage and utility easement, Utility Division Staff will extend the dead end water line in Daniel Street to the west side of Main Street. This water line bore will provide a connection between the 12" water line along the east side of Main Street and the 8"water line extended by staff across 1020 S. Main Street from Daniel Street. This will provide a needed loop to improve water quality and fire protection in the immediate area. Reducing the number of dead end lines in the City is an ongoing goal of the Utility Division. Whenever we can take advantage of existing construction contracts to undertake tasks out of our area of expertise, we try to do so. Water quality is a big issue these days and dead end lines have to be flushed out at fire hydrants monthly. Installation costs were requested from three contractors that we currently have open contracts with (Bandera, Gratex and Wilson),Wilson was the only contractor to offer a price for the work, and this price is competitive with similar work on other projects. The final component of the appropriation figure is the sidewalk, irrigation and landscaping repair costs along Dooley Street and Dove Loop resulting from the emergency wastewater line replacement. These repairs were performed under our existing annual contracts with costs of: Sidewalk Replacement $11,861.00 Irrigation Repair & Replacement $ 8,097.00 Landscape Replacement $ 6,000.00 Tofal $25,958.00 Staff recommends approval. R:WGENDA�2015\01-06-15\SH121 Sect 13 Utility Reloc Constr CO 1.doc ORDINANCE NO. C« �'`d� AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS, REVISING THE ADOPTED CAPITAL IMPROVEMENTS PLAN BUDG�T FOR THE FISCAL YEAR ENDING IN 2015, PROVIDING FOR THE TRANSFER OF THE FUNDS; DECLARING AN EMERGENCY AND PROVIDING AN EFFECTIVE DATE WHEREAS, the City Council of the City of Grapevine desires to improve water and wastewater systems throughout the City; and WHEREAS, recent discoveries of a wastewater line with major failures have resulted in the need to expedite the design and construction of repairs and line replacements; and WHEREAS, ongoing sewer gas corrosion on the Hilton Force Main has resulted in the need to take preparatory steps for the implementation of a waste stream treatment system; and WHEREAS, a planned drainage project connecting the dead-end drain line in Daniel Drive with the existing system in Main Street presents the opportunity to also eliminate an existing eight-inch waterline dead-end in Daniel Drive; and WHEREAS, funding for water and wastewater line repairs, replacement and new improvements is not currently included in the FY2014 -2015 Capital Improvements Plan Budget. NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS: Section 1. That all matters stated in the preamble of this ordinance are true and correct and are hereby incorporated into the body of this ordinance as if copied in their entirety. Section 2. That the City Council hereby authorizes an amount of$90,000.00 be appropriated from the Utility Fund Unappropriated Fund balance to the FY2014-2015 Capital Improvements Plan Budget for the necessary improvements. Section 3. That a copy of the revised FY2014-2015 Capital Improvements Plan Budget document shall be kept on file in the office of the City Secretary and on the City of Grapevine website. Section 4. That the terms and provisions of this ordinance shall be deemed to be severable, and that if the validity of any section, subsection,word, sentence or phrase shall be held to be invalid, it shall not affect the remaining part of this ordinance. Section 5. That the fact that the present ordinances and regulations of the City of Grapevine, Texas are inadequate to properly safeguard the health, safety, morals, peace and general welfare of the inhabitants of the City of Grapevine, Texas, creates an emergency for the immediate preservation of the public business, property, health, safety, and general welfare which requires that this ordinance shall take effect immediately from and after its passage and it is accordingly so ordained. PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS on this the 6th day of January, 2015. APPROVED: ATTEST: APPROVED AS TO FORM: ORD. NO. 2 _ ; ,. � , ��,• ;..:�.,_�,- t t v �. � F; ; ��:":,�r . . y . w 4'�..". .w.e�. .:. _..s^ . ' y... Y. � � } }, ... . O • N . : , •'��.., , . , : , .._.. � .� '��.�.. 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