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Home My WebLink AboutC2021-068 - 2/26/2021 - NA DocuSign Envelope ID:3457773C-CFFO-4F07-BE67-0C3D984570A3 Engineering Services Memo DocuSigned by: TO: Peter Zanoni, City Manager S{t ut, Utra, THRU: Steve Vera, Assistant City Manager 7A1B8293C92149 1-Docutitaned by: DocuSigned by: FROM: Jeff H. Edmonds, P.E., Director of Engineering Services ��//�-- wln, I*Ok, Kevin Norton, RE, Director of Water Utilities `--E5Ecct3CEF4A0 9877924357534A1 SUBJECT: Request to Authorize Emergency Improvements to Existing Water and Wastewater Utilities at Laguna Shores Road 18026A SATE February 26, 2021 SUMMARY: Laguna Shores is a collector road located at the south edge of Flour Bluff that runs from SPID to Wyndale Street. The road parallels the Flour Bluff shore with the Laguna Madre, hence its name: Laguna Shores Road. As part of the Bond 2018 program, voters approved a full depth street reconstruction of Laguna Shores Road that included widening and elevating the street to protect against inundation and wave action. Water and wastewater utilities improvements were also included in the scope. The street reconstruction project started in October 2020. The record-breaking low temperatures experienced in Corpus from February 14-20, 2021 resulted in large number of main breaks and unprecedented demands on the water distribution system. One such rupture affected the 24" primary feed to the Island and resulted in significant challenges maintaining the water supply to the Island. These circumstances have led to a re- evaluation of the water utilities included in the Laguna Shores construction project. Originally, water and wastewater lines were designed to be mounted above-ground on bridge structures at three channel crossings under Laguna Shores Rd: O'Neill Channel, Beasley Channel, and Van Galen Channel. Utilities now feels that the aboveground crossings would be too vulnerable and should be converted to underground directionally drilled construction to protect the water and wastewater lines from extreme weather and salt spray. Additionally, the water lines included in the design need to be upsized to better support the supply of water to the Island. The proposed changes include extending a new 18" water line south from an existing 18" water line at SPID to just south of Knickerbocker Street. The new transmission main would allow a future extension to the south that will enhance the ability to reliably serve the Island. It will also provide a more robust distribution network that would better support new development in Flour Bluff. Including these water and wastewater system upgrades in the ongoing Laguna Shores Road project will ultimately improve utility system reliability and increase water flow to the Island. In addition, executing these needed water system improvements now rather than several years in the future will reduce the costs of construction and allow us to avoid the traffic disruption of a future construction project within the same footprint. The new work is estimated to cost $1.4M. Engineering Services feels this represents fair and reasonable compensation for the new work. Approximately $350K of bid items are no longer K\Engineering\EMERGENCY DECLARATIONS Page 1 of 3 SCANNED CocoSign Envelope ID:3457773C-CFFO-4FD7-BE67-0C3D984570A3 required so the net impact is roughly a $1M increase in contract value. Since the construction project is already underway,these changes must be implemented via change order. Texas Local Government Code 252.048 limits construction change orders to 25%.An emergency declaration allows the City to waive the requirement to bid that work out. There would be no way to bid that work and execute it separately without significant cost and schedule impacts to the current construction project. Exhibits illustrating the proposed plan and a cost proposal are attached to this memo. ACTIONS TAKEN: 1. City Staff engaged LJA Engineering (Design Engineer) to develop plans for installing lines underground and adding the 18"water line. 2. LJA Engineering and Mako Contracting (Construction Contractor)prepared a preliminary cost proposal that is being negotiated by City staff. FUTURE ACTIONS: 1. Authorize staff to execute a change order with Mako Contracting to incorporate utility system improvements into the Laguna Shores Rd construction project. CONTRACT AUTHORITY: The City Manager is authorized to approve contracts in excess of$50,000 by Charter Art. X, Sec. 2(a) in case of an emergency, but such action must be reported to the Councl. Additionally, The Local Government Code 252.022(a) exempts this contract or procurement from State's competitive bidding requirements because it is necessary: 1. to preserve the property of the municipality; and 2. to preserve or protect the public health or safety of the municipality's residents. FUNDING: The estimated construction cost is $1,400,000.00. Funding sources: 1. Water 2020 Capital Fund 4099 - 500030 $1,000,000 2. Wastewater Capital Reserve Fund 4510 - 500030 $ 400,000 RECOMMENDATION: It is recommended that: 1. staff be authorized to administratively secure the contractors for this repair effort and adjust the budget as needed to ensure completion of the required repairs; and 2. an emergency be declared and the City's Charter Art. X, Sec. 2(a) be invoked to protect the public health or safety of the municipality's residents, preserve the property of the municipality and to avoid undue additional cost to the City. K\EngineennglEMERGENCY DECLARATIONS Page 2 of 3 DocuSign Envelope ID:3457773C-CFF0-4F07-BE67-0C3D984570A3 CONCUR: OuS.pned rby:.' , xt,l,(t U�It hitkitd, 3/1/2021 VMF'+d F0AA,?ddt Assistant City Attorney Date APPROVED: 3411/ • € 52111111111111114.... P noni Date City Manager KaEngineenng\EMERGENCY DECLARATIONS Page 3 of 3 DocuSign Envelope ID:3457773C-CFF0-4FD7-BE67-0C3D984570A3 / s-. C9 92 O ' 6"ACp J Cp O. 6.,C90 0 71✓•4\ 1542 `t'' ,O / . �f� �S : Idli ' ,O T 'y'. O r \H. q . 1111.-. O , �4a ' 9. c9aa `oo� .,::.,,-..,,,v �" Connect to existing �• `` .fir, ha 18" water line ",...16„. C. moo° `��.. ,` t4. moo.. G `J / N. Proposed 18" water line __/ i o / on Laguna Shores Rd =°% b i• AV`, r:, V 18" water line stub-out for future development and to increase water flow to Island "o 0 a a; O 7 ; 5.i to � O+ m 7v 40415" 4,J� r =� Laguna Shores Rd Proposed 18" Water Line DocuSign Envelope ID 3457773C-CFF0-4FD7-8E67-0C3D984570A3 r te*/v } • , , "Twp '� ' T - 4' A'lo R . L fir. .. .•K.fr 1 ! •\ lid �4. / � ��`i'. `i Z�11 sw y edJ�rw ;` „..,..r.. ' . '-"z%..,,-: _T et �: rte` , :. x- `""0' I. 18" WATERLINE CONNECTED TO . , • a � �' EXISTING 18" WATERLINE TO ISLAND. 4 "4111 Sr ` \ 1 :_,.. ./• r T .. ';; " • PREVIOUS 8" WATERLINE fir,` DESIGN UPGRADED TO 1 A-4, -= „ / r 'I ' ' PARALLEL 6” & 18" WATERLINE o � .: .t e R' ' a , y c!`'i \i) , rya. a • a .':' s,, 18" WATERLINE & FORCE MAIN ROUTED UNDERGROUND AT O'NEILL CHANNEL • .,II ''' IN LIEU OF ABOVE GROUND MOUNTED - -F. ON CULVERT STRUCTURE. z s m. s a M a. � � o ti /4C ilk.y - - CygA'AF15 ;� N 18" WATERLINE EXTENDED OUTSIDE _ OF PAVEMENT FOR FUTURE PHASE. 2 s �� o too' 200' 100' ;; THIS DOCUMENTLAGUNA SHORES ROAD SGL! AS NOTED a IS RELEASED FOR DRAWN RV. j w NFORMAT10N PURPOSES ROADWAY IMPROVEMENTS wow ONLY BY JEFFREY C. PROJECT NUMBERS 18024A, 18025A. & 18026A APPRDVID EN. CM.P.E. 101983.ON JCC 01/13/21,ANO SNAILI4 DAT, SEGMENT 1 JANUARY 13• 2021 NOT BE USED FOR LJA ENGINEERING PARALLEL 6"&18"WATERLINE& Jae NO. C007-18000 pURPOSES CONSTRUCT/ON.BOWS, OR paneP110'1'Iw••1 PLG "')F'1"6 ROUTING UTILITIES UNDERGROUND AT O'NEILL CHANNEL Stitt' NO I OF 2 LJA EnQ,neertno. Inc. 5350 South Staples Street. Suite 425 Corpus Chr,.t. Texas 78411 phone: .361 991 8550 www,LJA corn I DocuSign Envelop!ID 3457773C-CFF0-4FD7-BE67-0C3D984570A3 4, .....,s. ...,._., �,�° y43.1, . 4,4-4. 4,..t.4„.._,,,„...., ,., „...., .._t 2...,-,.,..,., , ip Y :,1 ",,. - N •••••:k4iir.- 4'7. ' 12" WATERLINE AND 10" & 16" FORCE MAIN ROUTED UNDERGROUND AT BEASLEY CHANNEL �O' ,/ „�.. .. IN LIEU OF ABOVE GROUND MOUNTED ON _ t + ;` " CULVERT STRUCTURE �k,� I�� a. • , 4 moo - �'" f-r r CyQ� S - j;t "�. x 4 • It . 4. . 4r et,:i.. ,.:..-•'I'-' y�' , r l 1 J,, 12" WATERLINE & FORCE MAIN ROUTED r� •)tt , O iiii'4' UNDERGROUND AT VAN GALEN CHANNEL �o. IN LIEU OF ABOVE GROUND MOUNTED • •• , ON CULVERT STRUCTURE. �w i G9 J� a FNC c) t sti • • .J.'t L fJ6�" - + f •p !o f I . :'•..' —44'0Rn.' 4.'M' .. ,n � �r F_ ,:. •err N • GRAPHIC SCALE: 1._400. s 0, 2001 4001 800' . SCALE THIS DOCUMENT LAGUNA SHORES ROAD AS NOTED !N RELEASED FOR ROADWAY IMPROVEMENTS °A""s' tl' 1.1 1NFORMAl10N PURPOSES WD'N ONLY BY JEFFREY C. 114 PROJECT NUMBERS 18024A, 18025A, & 18026A a"PR3;ti4.6 BY* OA7 ' CM, P-E. 101983,ON JCC DATA: NO1, ANC T13BE SHALL U ED FOR LJA ENGINEERING ROUTING UTIILITIES UNDERGROUND OU4NUNtc 13, 2021 COM-TRUCDON,BIOOINC, C007-18000 { OR PERMIT PURPOSES. 'I3rE FIRM REG.'.0, AT VAN GALEN&BEASLEY CHANNELS '"IL`' 1J" 2 OF 2 L.JA Co.).n..nrl n•1, Inc. 5.300 South Stool.", 5trnnt, •....to 4I0 Corp,'" Gvlet,, Tnxoo 70411 pr.onn: 301.991,75560 ww w.ldA.com