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2019-30802 Resolution RESOLUTION; 2019-30802 A RESOLUTION OF THE MAYOR AND CITY COMMISSION OF THE CITY OF MIAMI BEACH, FLORIDA, APPROVING CHANGE ORDER NO. 7 TO THE CONTRACT BETWEEN THE CITY OF MIAMI BEACH, FLORIDA, AND LANZO CONSTRUCTION CO., FOR THE SUNSET HARBOUR PUMP STATION RETROFIT AND DRAINAGE IMPROVEMENTS PROJECT, IN THE NOT TO EXCEED AMOUNT OF $158,350.00, FOR ADDITIONAL DESIGN/BUILD SERVICES TO IMPROVE THE EXISTING DRAINAGE SYSTEM TO SUPPORT LOW LYING BUILDINGS, INCLUDING THE INSTALLATION OF 16 BACKFLOW PREVENTION DEVICES, ROOF DRAIN REROUTES AT THE SOUTHEAST CORNER OF 20TH ST. AND PURDY AVE., AND THE INSTALLATION OF THREE MICRO-PUMP STATIONS IN THE RIGHT OF WAY; FOR A TOTAL CONTRACT AMOUNT OF $26,263,781.74; AND FURTHER APPROVING AND AUTHORIZING THE CITY MANAGER TO TAKE THE NECESSARY AND APPROPRIATE STEPS FOR THE IMPLEMENTATION THEREOF; AND FURTHER AUTHORIZING THE MAYOR AND THE CITY CLERK TO EXECUTE CHANGE ORDER NO. 7. WHEREAS, on May 8, 2013, via Resolution No. 2014-28765, the City Commission awarded Lanzo Construction Co. ("Lanzo") a construction contract pursuant to Invitation to Bid No. 060- 2013TC for the Sunset Harbour Pump Stations Retrofit and Drainage Improvements, in the amount of $2,040,460.00 (the "Project"); and WHEREAS, on May 21, 2014, via Resolution No. 2014-28590, the City Commission approved Change Order No. 1, in the amount of$546,481.00, for additional construction and design services, including the installation of drainage pipes, fencing, and electrical components, and additional engineering and design services; and WHEREAS, on September 30, 2014, via Resolution No. 2014-28765, the City Commission authorized an emergency no-bid contract, pursuant to Subsection 287.055(9)(c)(6) Florida Statutes, with Lanzo, in the amount of $4,250,000.00, to convert the construction agreement into a design/build agreement for stormwater improvements along 18th St., watermain improvements along 20th St., paving and hardscape improvements along 20th St., landscape improvements along 20th St., lighting improvements along 20th St., and irrigation improvements along 20th St, which amount is in addition to the Lanzo construction contract; and WHEREAS, on October 29, 2014, via resolution 2014-28817, the City Commission authorized Change Order No. 1 to the design/build agreement, in the amount of$5,590,718.00, for additional engineering services, drainage structure modification, and water main replacement for the Project to replace failing water supply distribution; and WHEREAS, on September 30, 2015, via resolution 2015-29153, the City Commission authorized Amendment No. 2 to the design/build agreement, in the not to exceed amount of $7,080,844.00, to bring Purdy Avenue, West Avenue, and 18th St. to a 3.7 NAVD elevation, and to replace the 20-inch water main along Dade Boulevard; and WHEREAS, on December 9, 2015, via resolution 2015-29242, the City Commission authorized Amendment No. 4 to the design/build agreement, in the not to exceed amount of $2,721,607.00, to bring Sunset Dr. to a 3.7 feet NAVD elevation, including associated water, sewer, stormwater improvements, landscaping, lighting, and irrigation; and WHEREAS, on April 14, 2016, via resolution 2016-29366, the City Commission authorized Amendment No. 5 to the design/build agreement, in the amount not to exceed $3,875,322.00, to bring Parking Lot No. 46, the Purdy Boat Ramp, and the Purdy Marina Parking Lot to 3.7 Feet NAVD elevation, expand pump station No. 2, and construction of a discharge outfall pipe; and WHEREAS, after the Project was placed into operation, the City identified ponding at critical locations within the Sunset Harbour drainage system following two rainfall events that caused flooding of low lying areas at Sunset Harbour, which include an intense rainfall on August 1, 2017 that lead to flooding throughout the City and a localized rainfall event on May 13, 2018 that was documented via Letter to Commission, dated May 15, 2018 (LTC 268-2018); and WHEREAS, the City has engaged Lanzo and Wade Trim, the Engineer of Record for the Project, to determine the system capacity, as constructed, and to find ways to make enhancement to the existing drainage system; and WHEREAS, after a comprehensive evaluation of the Sunset Harbour drainage system, it was determined that the system is capable of handling a five year storm event; however, some low lying properties, especially properties below sea level, will experience standing water for a short amount of time during rainfall events with intensities equal to or greater than 1.8 inches per hour, and as a result of this condition, the City and Lanzo reached an agreement to provide certain improvements to enhance the capacity of the drainage system, including the installation of 16 backflow prevention devices, roof drain reroutes at the southeast corner of 20th St. and Purdy Ave., and the installation of three micro-pump stations in the right of way; and WHEREAS, the total cost for the improvements to the drainage system is $475,000.00, of which two thirds will be the responsibility of Lanzo and one third, in the amount not to exceed $158,350.00, will be the City's responsibility; and WHEREAS, the Administration is recommending the approval of Change Order No. 7, in the amount not to exceed $158,350.00, for a total contract amount of$ 26,263,781.74.' NOW,THEREFORE, BE IT DULY RESOLVED BY THE MAYOR AND CITY COMMISSION OF THE CITY OF MIAMI BEACH, FLORIDA, that the Mayor and City Commission hereby approve Change Order No. 7 to the contract between the City of Miami Beach, Florida, and Lanzo Construction Co.,for the Sunset Harbour Pump Station Retrofit and Drainage Improvements Project, in the not to exceed amount of $158,350.00, for additional design/build services to improve the existing drainage system to support low lying buildings, including the installation of 16 backflow prevention devices, roof drain reroutes at the southeast corner of 20th St. and Purdy Ave., and the installation of three micro-pump stations in the right of way; for a total contract amount of $26,263,781.74; and further approving and authorizing the City Manager to take the necessary and appropriate steps for the implementation thereof; and further authorizing the Mayor and the City Clerk to Execute Change Order No. 7. PASSED and ADOPTED this 10th day of April, 2019. 3`-`An1 B .o,. - ATTEST: , �P •.. '9Cj4,�,, " �.., ',y Dan Gelber, Mayor INCORP ORATED: APPROVED AS TO i) ' _ y�y . \\� FORM & GUAGE I/ 1 !!// UTION Rafael E. Granado, ity C erk �,4�.°H 26��•' ty Attorney j ate Resolutions- R7 N MIAMI BEACH COMMISSION MEMORANDUM TO: Honorable Mayor and Members of the City Commission FROM: Jimmy L. Morales, City Manager DATE: April 10, 2019 SUBJECT:A RESOLUTION OF THE MAYOR AND CITY COMMISSION OF THE CITY OF MIAMI BEACH, FLORIDA,AUTHORIZING THE CITY MANAGER OR HIS DESIGNEE TO APPROVE CHANGE ORDER NO. 7 TO LANZO CONSTRUCTION CO. ("LANZO"), FOR SUNSET HARBOUR PUMP STATION RETROFIT AND DRAINAGE IMPROVEMENTS, IN THE NOT TO EXCEED AMOUNT OF $158,350, FOR A DESIGN/BUILD TO PROTECT LOW LYING BUILDINGS DURING THE PEAK OF THE FIVE YEAR DESIGN STORM; SUCH ORIGINAL AGREEMENT APPROVED PURSUANT TO RESOLUTION NO. 2014-28765. RECOMMENDATION The Administration recommends approving the Resolution. ANALYSIS On May 8, 2013, the City awarded Lanzo a contract pursuant to Invitation to Bid No. 060- 2013TC for the Sunset Harbour Pump Stations Retrofit and Drainage Improvements in the amount of$2,040,460. On June 19, 2013, the City Commission approved Change Order No. 1 in the amount of $546,481 for additional work including: drainage pipes, structure, fencing, electrical components, and additional engineering services. On September 30, 2014, the City Commission authorized an emergency no-bid contract to Lanzo in the amount of $4,250,000 for the design-build of additional improvements to the Sunset Harbour Neighborhood. with four subsequent change orders in the aggregate amount of $19,268,491 for a total contract in the amount of$26,105,432. After the project was placed into operation, the City noticed ponding at critical locations within the Sunset Harbour drainage system. Two rainfalls caused flooding of low lying areas of Sunset Harbour: The City experienced significant flooding from an intense rainfall on August 1, 2017 that lead to flooding throughout the City. Also localized flooding was observed from a rainfall event on May 13, 2018 and documented as a Letter to Commission (LTC 268-2018). Since then, the City, Lanzo and Wade Trim, record engineer for this project, have met multiple times to determine the system capacity as constructed and to find ways to make enhancements Page 945 of 1091 to the drainage system. After a comprehensive evaluation of the drainage system, it was determined that the system is capable of handing the design storm; however, some low lying properties, especially the properties below sea level will experience standing water for a short amount of time during rainfall events with intensities equal to or greater than 1.8 inches per hour. As a result of this condition, the City and Lanzo reached an agreement to perform the following improvements which are described in more detail in the attached proposal letter from Lanzo: 1. Installation of 16 backflow prevention devices. 2. Roof drain reroutes at the southeast corner of 20th Street and Purdy Avenue. 3. Installation of three micro pump stations in the right of way. The total cost for the improvements is in the amount of $475,000.00 of which two thirds will be the responsibility of Lanzo and one third (475,000 / 3 = $158,350) the City's responsibility. Therefore, the City is recommending to issue a change order to Lanzo in the amount of $158,350 for a grand total contract, inclusive of this change order, in the amount of $ 26,263,781.74. CONCLUSION The Administration recommends approving the Resolution. Amount 1 $ 158,350 Account 1 429-0815-069357-00-418-561 Legislative Tracking Public Works ATTACHMENTS: Description D Attachment A- Lanzo official proposal D Attachment B - LTC 268-2018 Page 946 of 1091 TILANZO CONSTRUCTION COMPANY aeliveirag antahuhte tntrarhuchae soh,Obas for tomorrow s umarunrua March 11,2019 Mr. Roy Coley, Public Works Director Mr.Nelson Perez-Jacome,City Engineer City of Miami Beach 1700 Convention Center Drive Miami Beach,Florida 33139 Re: Sunset Harbour Close Out Proposed Improvements Gentlemen: Lanzo Construction and Wade Trim have appreciated the time the City has spent with our design-build team to understand the challenges faced as we work together for solutions to protect low lying buildings during the peak of the 5-year design storm.This letter is intended as a follow-up to our July 6,2018 letter and subsequent meetings and contains final recommendations for drainage system improvements. Based on additional evaluation and discussions with AECOM and the City,we recommend the following improvements: Item 1:Installation of sixteen(16)Backflow Prevention Valves Backflow prevention measures placed at selected inlet locations will keep roadway drainage contained within the storm pipes and prevent flow from entering low lying properties where gravity lines connect below the design hydraulic grade line.This condition was not a part of the project's original design criteria.Backflow preventers can be installed quickly and are an acceptable solution for this type of stormwater drainage situation.We have attached a detailed system map showing the location of where backflow preventers should be installed designated as`BFP 1 through 16"on the attached Figure 1. Estimated Cost(Design and Construction):$160,000 Preliminary Schedule:8 to 12 Weeks Item • ' . . ! • ' : : •_. . !m _ ' . :ally area) To prevent ponding and impact to low lying buildings adjacent to the Right of Way(ROW)area on the south side of 20'h Street,east of Purdy Ave.,we recommend that improvements be made to reroute the four existing roof drain connections on the north face of the building to tie directly into the storm sewer under 20th St.Connecting the storm water into the conveyance system directly will also limit the size of a required micro pump station designed to serve the ROW space at this location.This work will require excavation, installation of new storm sewer pipe Page 947 of 1091 and restoration of the road and sidewalk areas. Estimated Cast(Design and Construction): $115,000 Preliminary Schedule:3 to 5 Weeks Item 3:Installation of Micro Pump Stations Three micro pump stations(capacities of approximately 100 gpm)designed to serve ROW areas adjacent to the face of existing buildings are proposed at three locations noted as MPSI,MPS2, and MPS3 on the attached Figure 1.These small sump pumps will serve to pump water in these ROW areas directly to the storm sewers under the roadway,allowing it to enter the conveyance system.This work will include installation of a sump structure,pumps with floats,electrical service and new discharge piping,minor adjustments to the sidewalk to prevent drainage to the front of Sushi Garage,along with restoration of the areas. Estimated Cost(Design and Construction):$200,000 Preliminary Schedule: 16 to 24 Weeks Guaranteed Maximum Price $475,000 Performance The proposed improvements identified above should provide a 5-year level of service within the ROW and no water in the first floor of buildings for the 5-year,24-hour SCS Type III design storm with 6-inches of total rainfall during a tidal outlet condition of 2.7 ft at the outfalls. )- • Holly P. Kremers, P.E. Engineer of Record • Page 948 of 1091 As mentioned previously, it is recommended that property owners conduct additional improvements to address private drainage needs where the properties are lower than sea level. Lanzo/Wade Trim is pleased to be a partner with the City on this landmark project to protect our community from the threat of severe weather conditions and sea level rise.We affirm our commitment to work alongside the City of Miami Beach in delivering a level of service for Sunset Harbour properties and residents that meets the City's desires.We look forward to meeting with you to discuss the next steps in moving forward to implement these improvements. Additionally, Lanzo agrees to: 1) Provide a final design with sufficiently detailed engineering analysis for the City's review and approval 2) Select pumps and backflow preventers that have been approved by the City 3) Add and/or remove pumps and backflow preventers as required to satisfy the 5 Year 24 Hour storm event described above 4) Warrant and represent that the output of Pump Station 2A will be increased in proportion with the additional flows accepted by the Sunset Harbour drainage system 5) Provide an updated model inclusive of the proposed improvements and a drainage map/profile indicating the design HGL at each property. 6) Coordinate all work with property/business owners prior to commencement. We shall provide the above work at a cost NOT TO EXCEED the amounts listed within this proposal. The costs shall be distributed as follows: one-third(1/3) of the cost will be paid by the City, two-thirds(2/3)of the cost shall be paid by the design-builder(Lanzo/Wade Trim). Lanzo agrees to WARRANTY the performance of these improvements for a period of one(1)year, following final completion of work.Should additional improvements be required during the warranty period,Lanzo agrees to execute these repairs,upgrades,or modifications at no additional cost to the City. We look forward to resolving this issue and beginning work on these improvements. Sincerely, • -—--- -- -Fred-Tingberg - Chief Operating Officer Lanzo Construction Page 949 of 1091 „-.7..,--w,-7-.7,7-- ,,,, -..,4"•;:', --.4D improvements . _ ....,., . ..___rs?..5„.?2......,...,7 ,....= .....:......,....::., ,.„..„.., I , ,.,..;: , _ ., .,.i..„ ....,% ...,-.:--__:::,,,,,,4;._-•;-:# '_,:,... .,71...:.,‘:1_.= . 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'.!7_r .T7-1. 1 Pope ida 01021 MIAMI BCH City of Miami Beach, 1700 Convention Center Drive, Miami Beach, Florida 33139, mvvv.miamibeachfl.got Jimmy L. Morales, City Manager Tel: 305-673-7010 , Fax: 305-673-7782 NO. LTC# 268-2018 LET ER TO COMMISSION TO: Mayor Dan Gelber and Members oft e City Co mission FROM: Jimmy L. Morales, City Manager DATE: May 15, 2018 SUBJECT: Storm Event of Sunday Evening, ay 13, 2018 The purpose of this Letter to Commission is to provide information to the Mayor and City Commission regarding the storm event of Sunday night. The City has a rain gauge located at City Hall which recorded a total of 4.09 inches of rain for the 24 hour period ending at 12:00 am May 14, 2018. Between the hours of 6:00 pm and 7:00 pm, 1.88 inches of rain fell with a peak intensity of 8.11 inches per hour. During the time of the heaviest rains and immediately afterwards, some localized flooding was observed at various locations throughout the City. In Sunset Harbour on Sunday evening, some properties that are located below the flood plain elevation reported minor flooding for a brief period of time. The storm water system built in Sunset Harbour by Lanzo Construction Company was expected to prevent sunny day flooding due to sea level rise and manage six (6) inches of rain in 24 hours with a peak hourly capacity of 2.4 inches. The improvements have proven to work very well against sea level rise as we have not seen any sunny day flooding in the area which had been frequently the case during higher tidal events. All information available shows the system will easily manage the 6 inches of rainfall in 24 hours. However, the system, in at least some locations, reaches capacity at approximately 1.8 inches in one hour. City staff, consultant engineers from AECOM, and Lanzo Construction Company with their engineers from Wade Trim, have been engaged for months making this determination. Lanzo Construction Company owner, Joe D'Alessandro Sr., has provided his commitment to the City of Miami Beach to make improvements in the system to be sure expectations are met. Lanzo Construction Company is expected to provide submittals for engineering review of their intended improvements. Work is expected to commence very shortly. If the City experiences rainfall events that exceed 1.8 inches per hour, exceeding the system capacity, properties that are below the flood plain elevation may experience standing water for a short amount of time. prkceShoould youuhave any questions, please contact myself or Roy Coley at 305-673-7080. JLM/ RC Page 951 of 1091