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Item 9AItem 9A CITY OF SOUTHLAKE MEMORANDUM (February 3, 2015) To: Shana K. Yelverton, City Manager From: Robert H. Price, P.E., Director of Public Works Subject: Approve Change Order No. 2 with Wilson Contractor Services, LLC for the 2013 CIP Pressure Plane Interconnection Valves project in an amount not to exceed $100,000 Action Requested: Approve Change Order No. 2 with Wilson Contractor Services, LLC for the 2013 CIP Pressure Plane Interconnection Valves project in an amount not to exceed $100,000. Background Information: Neel -Schaffer, Inc. (previously Cheatham & Associates) conducted a water model computer analysis for the City's water infrastructure network. The model identified five (5) areas within the high pressure plane which have marginal capabilities during fire flow situations. The recommended solution for the system is to install pressure plane interconnection valves (PRV) which will detect the changes in pressure between the high pressure and low pressure planes and electronically adjust the water flow accordingly to supplement the availability of water during a fire fighting situation. During the Southlake 2030 Water Master Plan Development, this project was identified as a Tier 1 project. City Council awarded the contract to Wilson Contractor Services, LLC (Contractor) on November 5, 2013 to construct the vaults and install five (5) PRV's at the vulnerable locations identified in the computer model as having the most significant pressure reductions during a heavy water demand event, such as a fire event, when the water distribution system is required to provide higher flows to fire hydrants. The PRV's were installed during the summer of 2014 in underground concrete vaults and the antennas originally specified in the contract were erected at all five (5) locations. The Rhome antenna bases for the SCADA communications system were recently removed so that less obtrusive alternatives could be researched. This change order with Wilson Contractor Services is for the work required to install various appurtenances needed to re - Page 1 of 3 Item 9A mount the antennas for the SCADA system replacements are as follows: The antenna base N. Shady Oaks Dr. and Dove Rd. Install wooden light pole (similar to others in the vicinity) will be added to the southwest corner of the intersection and the antenna will be attached to the pole. $10,809 N. Shady Oaks Dr. and Highland St. Attach antenna to the existing Shady Oaks lift station, adjacent to the existing lift station antenna. $16,124 N. Shady Oaks Dr. at Durham Elementary Install a series of (up to) 5 box style street lights and attach antenna to the closest pole to the PRV. $10,983 Southlake Boulevard and Southridge Lakes Parkway TxDOT is agreeable to the City to attaching the antenna to the existing traffic signal pole at FM1709 (Southlake Blvd.) located adjacent to the PRV. $48,087 Southlake Boulevard and River Oaks Dr. Install decorative pole and attach antenna. $11,038 CHANGE ORDER NO. 2 TOTAL $97,041 The following costs are also associated with the antenna base replacements. These items are not part of Change Order No. 2 but will require payment to complete the above mentioned design changes. Neel -Schaffer, Inc. Engineering Services Agreement Amendment No. 2 $10,838 Tri County Electric Cooperative Street light (up to 5) installation at Durham Elementary $30,132 Wooden light pole installation at Dove Rd. & Shady Oaks $ 4,976 TOTAL OTHER EXPENSES $45,946 TOTAL COST FOR ANTENNA BASE REPLACEMENTS TOTAL J$142,987 Financial Considerations: Funding is available in the CIP Utility Fund to pay for Change Order No. 2 and ancillary costs. The existing Pressure Plane Interconnection Valves project has monies remaining in the budget to pay for a portion of this change order. The additional funds are available in the TW King Meter Station project that has been completed. Page 2 of 3 Item 9A Strategic Link: The replacement of the antenna bases links to the city's strategy map relative to the focus areas of Safety and Security and Infrastructure by achieving the highest standards of safety and security, improve performance of delivery & operational processes and investing to provide and maintain high quality public assets. The Critical Business Outcome that is met by the construction of these improvements is C1301: Continue to implement Southlake 2030 Plan by focusing on short-term initiatives. Citizen Input/ Board Review: N/A Legal Review: N/A Supporting Documents: Location Map Change Order No. 2 Staff Recommendation: The City Council may approve, amend or deny Change Order No. 5 with Wilson Contractor Services, LLC for the 2013 CIP Pressure Plane Interconnection Valves project in an amount not to exceed $100,000. Staff Contact: Robert H. Price, P.E., Public Works Director Cheryl Taylor, P.E., City Engineer Alejandra Ayala, P.E., Civil Engineer Page 3 of 3 NEEL-SCHAFFER, INC. 1 CHEATHAM & ASSOCIATES 2501 AVENUE J. SUITE 120 ARLINGTON, TEXAS 76006 Wilson Contractor Services, LLC Request for Change Order: for CITY OF SOUTHLAKE 2013 CIP PRESSURE PLANE INTERCONNECTION VALVES - ANTENNA MODIFICATIONS December, 2014 00.11640.000 Item No film Description Unit Quantity Prices In Figures Total N. Shady Oaks Drive & W. Dove Road Antenna Modifications Unit Cost 1 REMOBILIZATiON LS 1 $1.750,00 $1,750.00 2 REMOVE AND SALVAGE EXISTING ANTENNA LS 1 $0.00 $0.00 3 REMOVE EXISTING ROHN TOWER (INCLUDING 4'X4'X4' CONC. FOUNDATION) LS 1 $950.00 $950.00 4 F & I BACKFILL, SITEGRADE & SOD LS 1 $500.00 $5o0.60 5 WOOD POLE WILIGHT TO BE INSTALLED BY TRI-COUNTY LS 1 $0,00 $0.00 6 INSTALL 50' +- 2" RIGID METAL CONDUIT WICOAX LS 1 $5,359.00 $5,359.00 7 ATTACH ANTENNA TO POLE AT 18' HEIGHT W/COAX CONNECTIONS TO VAULT LS 1 $840.00 $840.00 8 GENERAL CONTRACT ADMINISTRATION AND OVERHEAD 15% LS 1 $1,409,85 $1,409.85 SUBTOTAL $io,808.85 TOTAL FOR N. SHADY OAKS DRIVE & W. DOVE ROAD ANTENNA MODIFICATIONS Item No Item Description Unft Quantity Prices in Figures Total N. Shady Oaks Drive and Highland Street Antenna Modifications Unit Cost 1 REMOBILIZATiON LS 1 $1.750.00 $1.750.00 2 REMOVE AND SALVAGE EXISTING ANTENNA LS 1 S0.00 $0,00 s REMOVE EXISTING ROHN TOWER (INCLUDING 4'X4'X4' CONC. FOUNDATION) LS 1 $950.00 $95a00 4 F & I BACKFILL, SITEGRADE & SOD LS 1 $1,750.00 $1,750.00 5 F & 1 135' +- 7 RIGID METAL CONDUIT WI COAX FOR ANTENNA LS 1 $8,280,55 $8,280,55 a F & 15' POLE EXTENSION to EXISTING ANTENNA MAST LS 1 $450.00 $450.00 - ATTACH ANTENNA TO MAST POLE AT 18' HEIGHT WICOAX. TO VAULT LS 1 $840,00 $840,00 8 GENERAL CONTRACT ADMINISTRATION AND OVERHEAD 15% LS 1 $2,103,08 $2,103,08 SUBTOTAL $16,123.63 TOTAL FOR N. SHADY OAKS DRIVE AND HIGHLAND STREET ANTENNA MODIFICATIONS Item No. Item Description Unit Quantity Prices in Figures Total N. Shady Oaks Drive @ Durham Elementary Antenna Modifications Unit Cost 1 REMOBILI7AT€ON LS 1 $1,750,00 $1,760.00 2 REMOVE AND SALVAGE EXISTING ANTENNA LS 1 $0.00 $0.00 3 REMOVE EXISTING ROHN TOWER (INCLUDING 1&' of 4'X4'X4' CONC. FOUND-) LS 1 $950.00 $950,00 4 F & I SACKFILL, SITEGRADE & SOD LS 1 S650.00 $650.00 5 WOOD POLES WILIGHT TO BE INSTALLED BY TRI-COUNTY LS 1 $0.00 $0.00 6 F & 15U +- 2" RIGID METAL CONDUIT W/ COAX FOR ANTENNA LS 1 $5,359.90 $5.359,90 7 ATTACH ANTENNA TO POLE AT 18' HEIGHT WICOAX CONNECTIONS TO VAULT LS 1 $840 00 $840.00 8 GENERAL CONTRACT ADMINISTRATION AND OVERHEAD ( 15%) LS 1 $1,432,49 $1.432.49 SUBTOTAL $10,982.39 TOTAL FOR N. SHADY OAKS DRIVE AT DURHAM ELEMENTARY ANTENNA MODIFICATIONS 11WIL56lJ01-PC1Peachvee1WC512 Wan Project Fllesl3 Open Proiects12013-019 SL 2013 CIP PRV Vaultsll PROJECT AOFAIN\2 PR CO Bid TabARFCONAntenna Base COX SowtMake PRV Sites Antenna Medlfications WCS PmpmaI EOPCC loft Neel -Schaffer, Inc / Cheatham Associates Arlington, Tx 1/9/20L5 NEEL-SCHAFFER, INC. I CHEATHAM & ASSOCIATES 2501 AVENUE J, SUITE 120 ARLINGTON. TEXAS 76006 Wilson Contractor Services, LLC Request for Change Order: for CITY OF SOUTHLAKE 2013 CIP PRESSURE PLANE INTERCONNECTION VALVES - ANTENNA MODIFICATIONS December, 2014 00.11640.000 Item item Description Prices in Unit quantity Figures Total Item Item Description Prices in No. Unit Quantity Figures Total Southiake Boulevard and Southrid a Lakes Parkway Antenna Modifications Unit Cost 1 REMOBILiZAT€ON LS 1 $1.750.00 $1.750.00 2 REMOVE AND SALVAGE EXISTING ANTENNA LS 1 $0.00 $0.00 3 REMOVE EXISTING ROHN TOWER {INCLUDING 4'X4'X4' CONC. FOUNDATION) LS 1 $950.00 $950.00 INSTALLATION OF 800+ FEET OF ELECTRICAL POWER SERVICE 8Y MEANS 4 OTHER THAN OPEN CUT (BORE) LS 1 S26,087.75 $26,087.75 5 F d I BACKFILL, SITEGRADE & SOD LS 1 $900.00 9900.00 6 TRAFFIC CONTROL WHILE INSTALLING COAX IN SIGNAL POLE (Not to Exceed) LS 1 $3,400,00 $3,400 00 7 F&i 70' +- 1-1 i2" RIGID METAL CONDUIT WITH COAX FOR ANTENNA LS 1 $7,886.45 $7,886.45 S INSTALL ANTENNA AND COAX TO TxDOT TRAFFIC SIGNAL POLE PER DETAILS LS 1 $840.00 S840.OD 9 GENERAL CONTRACT ADMINISTRATION AND OVERHEAD (15%) LS 1 $6,272.13 $6,272.13 SUBTOTAL $48,086,33 TOTAL FOR SOUTHLAKE BOULEVARD AND SOUTHRIDGE LAKES PARKWAY ANTENNA MODIFICATIONS Item Item Description Prices in Na. Unit Quantity Figures Total Southlake Boulevard and River Oaks Drive Antenna Modifications Unit Cost 1 REM081UZATION LS 1 $1,450.00 $1.450.00 2 REMOVE AND SALVAGE EXISTING ANTENNA LS 1 $0.00 $0.00 3 REMOVE EXISTING ROHN TOWER (CONCRETE FOUNDATION TO REMAIN) LS 1 $300.00 $3DO.00 4 8" TOPSOIL ANO SOD OVER REMAINDER OF FOUNDATION BASE LS 1 $400.00 WO-00 F & 1 14' CAST ALUMINUM LIGHTING POST, CENTURY OAK PX C012 BY ANTIQUE STREET LAMPS, OR APPROVED EQUAL. W12" OCTOGON BASE WITH 8" BOLT 5 CIRLCE AND CAP, BLACK, INSTALL 4" 36" REBARS, SIZED TO MATCH BOLT LS 1 $7.448.00 $7,448.00 HOLES OF BASE, AND EPDXY INTO EXISTING FOUNDATION, PROVIDE GROUNDING 6 GENERAL CONTRACT ADMINISTRATION AND OVERHEAD Q 15%) LS 1 $1,439 70 $1,439 70 SUBTOTAL $11,037,70 TOTAL FOR SOUTHLAKE BOULEVARD AND RIVER OAKS DRIVE ANTENNA MODIFICATIONS TOTAL N. SHADY OAKS DRIVE AND W. DOVE ROAD MODIFICATIONS $10,808.85 TOTAL N. SHADY OAKS DRIVE AND HIGHLAND STREET MODIFICATIONS $16,123.63 TOTAL N. SHADY OAKS DRIVE AT DURHAM ELEMENTARY MODIFICATIONS 510,982.39 SOUTHLAKE BOULEVARD AND SOUTHRIOGE LAKES PARKWAY MODIFICATIONS $48,086.33 SOUTHLAKE BOULEVARD AND RIVER OAKS DRIVE MODIFICATIONS 511,037.70 ESTIMATED TOTAL ANTENNA MODIFICATIONS CONSTRUCTION COST $971038.90 r 11W1LSON01-PC\PPachtree1WC5V Wan Araject Fil@sA3 Open Prolects12013-019 SL 2013 CIF ARV Vaults\l PROJECT ADM;NN2 PR CO Bid Tat)AR F=Antenna Base CO\ Neel•Schaffer, Inc. J Cheatham Associates 5outhi2 ke PRV Sites Antenna ModifiCaVo%WC5 Proposal Arlington, Tx EOPCC 2 of 2 V912015