SR 836 / I-395 and SR 5 / US 1 / Biscayne Boulevard Tunnel Concept Evaluation FLORIDA DEPARTMENT OF TRANSPORTATION DISTRICT 6

Transcription

1 SR 836 / I-395 and SR 5 / US 1 / Biscayne Boulevard Tunnel Concept Evaluation FLORIDA DEPARTMENT OF TRANSPORTATION DISTRICT 6 October 2014

2 TABLE OF CONTENTS 1. Figure 1.A: Compendium of General Concerns 2. Figure 1.B: Supplemental Rendering 3. Evaluation Memorandum a. Potential Utility Impacts b. Potential Operational / Mobility Impacts c. Potential Right of Way Impacts d. Potential Infrastructure Impacts e. Potential Constructability Impacts f. Potential Design / Geometrical Concerns g. Potential I-395 Project Development & Environment (PD&E) Concerns h. Additional Alternative i. Cost Estimate Summary 4. Figure 2: Geometric Concerns 5. Figure 3: Traffic Circulation and Multimodal Concerns 6. Figure 4: Infrastructure, Maintenance of Traffic (MOT), Aesthetics, and Controversy Potential Concerns 7. Figure 5: Environmental & Utility Concerns 8. Figure 6: Additional Right of Way Impacts Appendix A: Right of Way Cost Estimates Appendix B: Contaminated Soil Disposal Cost Estimate Appendix C: Rendering received on September 3, 2014 Appendix D: I-395 Tunnel and Biscayne Tunnel Project Cost Estimate

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5 Evaluation Memorandum The Florida Department of Transportation (FDOT) District 6 Design office was asked to evaluate a conceptual rendering involving depressing a portion of the I-395 freeway as well as a portion of SR 5/Biscayne Boulevard near downtown Miami provided by Miami-Dade County Commissioner Xavier Suarez (see Figure 1A and 1B). This concept was presented as an alternative option to the current Project Development & Environment (PD&E) study for the I-395. Below please find our comments; please note that these comments are based only on the conceptual rendering provided. Potential Utility Impacts: 1. Impact to existing Florida Gas Transmission (FGT) west/east lateral line that crosses Biscayne Blvd. just north of NE 15 th Street that feeds the Miami Beach Area (See Figure 5). As per the FGT Global Settlement Agreement with the State of Florida and FDOT the relocation of the permitted FGT facility will have to be performed at FDOT s expense and relocated to a suitable location as determined by FGT. One of the requirements for the suitable location is that the gas line has to accommodate an accessible width of 15 on both sides measured from the pipe edge plus 25 of temporary workspace on one of the sides. This entails rerouting the FGT line through an available side street north of NE 17 th Terrace to clear the tunnel and then rerouting the line south through N. Bayshore Drive to tap into the existing line prior to its crossing of Biscayne Bay. In addition to the relocation costs and traffic disruptions the FGT line is the sole supplier of TECO Gas Company which supplies gas services to the whole Miami Beach area. Hence, disruption of the FGT line will directly impact gas services to thousands of Miami Beach residents and businesses. Portions of costs associated with the relocation of the FGT line would be part of the overall cost for construction of this concept, but were not estimated as part of this analysis due to lack of information from the utility agency regarding preferred relocation routes at the time this report was developed. 2. Impacts to other underground utilities along Biscayne Blvd. include but are not limited to Miami Dade Water and Sewer and their regional pump station components and connecting lines, AT&T, and Florida Power & Light (FP&L) (See Figure 5). A preliminary ballpark estimate for the relocation of the Comcast, FPL, Level 3, Verizon, MDWASD, Teco Peoples Gas, and AT&T utilities along Biscayne Blvd. is approximately 58 Million. It should be noted that these costs, although additional with respect to the total cost of the project, should be borne by the utility agencies/owners if they are within the FDOT right of way by permit. 3. Impacts to overhead facilities in the I-395 vicinity including FP&L and AT&T. Potential Operational/Mobility Impacts: 1. Lock-down of the Biscayne Blvd. and I-395 tunnels during a hurricane event (for purposes of flood protection) will close two major thoroughfares in an already very congested area of coastal Miami-Dade County. These two facilities currently act as evacuation routes for the downtown area of Miami as well as the barrier island of Miami Beach. Closure of these two facilities would force traffic to seek alternate routes to evacuate the area which are not equipped to handle increased traffic in case of an emergency. 2. Loss of public parking, both on-street and public parking lots (See Figure 4). Page 1 of 6

6 3. The geometric requirements of both tunnels will greatly impact the circulation patterns of 10 bus routes affecting a high number of existing bus stops and inconveniences to many patrons. The tunnel along Biscayne Blvd. will force pedestrians to access bus stops along the frontage roads that are proposed at limited locations since the roadway would be underground in a two block area. 4. Impacts to the existing circulation of the Miami Dade Transit bus terminal located at the Biscayne Blvd. and NE 15 th Street intersection (See Figure 3). 5. Even though the intent of the tunnel concept is to provide a more pedestrian friendly connection, the portion of the roadway that would be depressed along Biscayne Blvd. actually eliminates approximately 14 existing crosswalks across Biscayne Blvd. currently located at signalized intersections and one upcoming mid-block crossing that is to be installed between NE 15 th Terrace and NE 16 th Street (See Figure 3). It is important to note that an independent connection between the Aarsht Center and Bicentennial Park is not being proposed with this concept as pedestrians would still have to cross surface roadways at the proposed roundabout location. 6. Impacts to the traffic connectivity between Biscayne Blvd. (south of I-395) and the proposed site for the Resort World Miami Project (See Figure 3). 7. The proposed interruption of NE 13 th Street between Bayshore Drive and NE 2 nd Avenue would create significant circulation problems and could create gridlock conditions along NE 14 th Street east of NE 2 nd Avenue (See Figure 3). 8. Impacts to the Biscayne Blvd. northbound access for all land uses between NE 11 th Street and NE 9 th Street and NE 2 nd Avenue and Biscayne Blvd. It will require vehicles in this area to first travel southbound along either NE 2 nd Avenue or the Biscayne Blvd. Frontage road to then use NE 8 th Street to access the Biscayne Blvd. northbound tunnel (See Figure 3). Potential Right of Way Impacts: 1. Based on the tunnel concept rendering, the proposed depressed typical section of roadway along Biscayne Blvd. was assumed to consist of four (4) 12 lanes, 14 median including 4 inside shoulders, 8 outside shoulders, and 2 concrete U-wall. The frontage roads consist of two (2) 11 lanes, 6 inside shoulder, curb & gutter on the outside, and 6 sidewalk which sums up to a total typical section width of 154. This section cannot be accommodated within the existing 100 right of way along Biscayne Blvd. north of the I- 395 without acquiring additional right of way and affecting the existing building structures along the corridor. Approximately 32 of additional right of way will be required on the west side and 22 of additional right of way on the east side (See Figure 6). Nine (9) private parcels will be impacted yielding a total acquisition cost of approximately 81 Million (See Appendix A). 2. At a minimum, the elevated profiles along N. Miami Avenue, NE 1 st Avenue and NE 2 nd Avenue as a consequence to the I-395 vertical alignment would have detrimental access and right of way impacts not only along these corridors but also along its intersecting side streets (NE 13 th Street, NE 13 th Terrace, NE 11 th Terrace and NE 11 th Street). Approximately 5 of additional right of way will be required along both the west and east sides, respectively (See Figure 6). Fifty (50) parcels will be impacted yielding a total acquisition cost of approximately 44 Million (See Appendix A). Page 2 of 6

7 Potential Infrastructure Impacts: 1. Impacts to the existing Miami Dade Transit Metro Mover structure (existing pier columns) at the NE 11 th Terrace and NE 15th Street intersections with Biscayne Blvd. Service will be temporarily disrupted between the School Board, Adrienne Arsht Center, and Museum Park to the rest of the downtown area (See Figure 2). For reference purposes, the cost for the Miami International Airport People Mover in 2013 was 270 Million for 1.25 miles which equals to 41, per linear foot. Hence, the approximate reconstruction cost of the impacted downtown people mover segments (Total of approximately 308 Feet) at the NE 11 th Terrace and NE 15th Street intersections with Biscayne Blvd will be approximately 13 Million. 2. Impacts to signals throughout the Biscayne Blvd. corridor as well as adjacent parallel roadways. Potential Constructability Impacts: 1. Maintenance of Traffic along Biscayne Blvd. during construction of this concept may require the complete shutdown of the corridor, which in this case would require diverting northbound traffic through NW 6 th Street, NE 1 st Avenue, NW 14 th Street, NE 2 nd Avenue, and NE 17 th Terrace to continue north along Biscayne Blvd. Biscayne Blvd. southbound traffic will be diverted through NE 17 th Terrace, NE 2 nd Avenue, and NW 7 th Street to continue south on Biscayne Blvd. The corridors to be used for the detours already operate at a high level of capacity and with the addition of the Biscayne Blvd. traffic severe gridlocks would be expected throughout the downtown Miami area for a substantial period of time (See Figure 4). 2. Construction of this project would take a substantial amount of time and would impact several communities in a very dense and urban area with many points of destination nearby. 3. Impact to residents and tourists with the limitation of staging areas, dirt, noise, restrictions in public life, and aesthetics would also be of concern for residents in this area. 4. Impact to businesses and economic sustainability of the area. 5. As per the Contamination Screening Evaluation Report prepared for the I-395 PD&E, two high risk contamination sites were identified near Biscayne Blvd. The high risk contamination sites are where the Perfect Service Station and the Belcher Oil Company Terminal & Tank Farm used to operate (See Figure 5). The construction of the tunnels will require a very detailed analysis and survey of the contaminated sites; just the study alone and obtaining the corresponding permits may take a couple of years. Based on the most recent information obtained from the environmental agencies files for the Belcher Oil and Perfect Oil sites, the contamination appears to extend approximately 1,300 feet along the proposed construction corridor for the subject project. It is estimated that the project cost to address the contaminated material will be approximately 27.3 Million (See Appendix B). It is also estimated that it will require approximately 106 days load-out and disposing of this contaminated material (approximately 526,000 tons) to a Class I Landfill. The cost of addressing the contaminated material does not include the construction and operation cost of a required temporary water treatment facility. Page 3 of 6

8 Potential Design/Geometrical Concerns: 1. The proposed tunnel concept Vertical alignment along I-395 will exceed the maximum grade requirements and not meet the minimum curve length for a freeway as per the FDOT standards and criteria. The restriction of having to maintain a minimum vertical clearance at the intersecting FEC railroad corridor and the limited distance to the west approach tunnel portals forces the I-395 profile to exceed the maximum allowable vertical grade. Furthermore, even with a substandard I-395 profile,n. Miami Avenue, NE 1 st Avenue and NE 2 nd Avenue would need to be raised to allow the I-395 tunnel to run underneath them (See Figure 2). 2. The new required N. Miami Avenue profile will interrupt the continuity of NW/NE 14 th Street. NW 14 th Street is the only east/west facility in the area connecting the Civic Center/Health District west of I-95 with Biscayne Blvd, therefore maintaining its connectivity is vital for linkage and emergency response reasons (See Figure 2). 3. It is our understanding that the concept presented involves raising the grade elevations to allow the top of the I-395 tunnel to be 10 feet above the current grade. This raised area would create grade changes along NE 1 st Avenue and NE 2 nd Avenue which can lead to deficiencies in stopping sight distance, special structural designs, and roadway vertical alignment concerns along these surface streets. Potential I-395 PD&E Concerns: 1. I-395 requires a Supplemental Environmental Impact Statement (EIS) that may require an additional five (5) years to complete. The Record of Decision issued on July, 2010 is for a bridge. Both a tunnel and an open cut tunnel were evaluated in PD&E and determined not to be feasible due to impacts to Overtown. The Supplemental EIS would need to mitigate impacts to Overtown for the tunnel to be considered a viable alternative (See Figure 4). Additional Alternative: On September 3, 2014, the Department was provided with an additional artistic rendering depicting a slightly modified layout of the proposed public space which, from a roadway and transportation standpoint, provided some changes from the rendering that was originally reviewed as part of this evaluation memorandum (See Appendix C). A cursory review was performed on this new alternative; the following are some concerns that were observed: It is unclear from the rendering whether the surface paths shown are intended to be for vehicular traffic or pedestrian traffic. Assuming that they are for pedestrian traffic, circulation patterns for vehicular traffic would be limited given that there would be no surface access for vehicles exiting the Downtown Miami area in the northbound direction to travel in the eastbound direction towards Miami Beach via the MacArthur Causeway. The roundabout originally proposed as part of the first rendering provided seems to have been replaced by a monument or sculpture; this elimination would limit the circulation pattern of vehicles exiting the Downtown Miami area and force vehicles north onto a network of local streets that may not be able to handle the additional traffic flows. It is unclear from this image where the exit point for the tunnel portion of Biscayne Blvd. would be located; it is assumed that it would be near the same location as that shown in the original rendering provided. Page 4 of 6

9 In short, more information would be needed regarding the depressed sections of roadways proposed as part of this alternative in order to be able to more accurately evaluate the impacts and costs associated with this concept. It should be noted that because of its artistic nature, this rendering was assumed to be a modified representation of the overall concept being evaluated by this report and in no way an engineering document meant to substitute the original rendering reviewed by FDOT. Cost Estimate Summary: As per the I-395 PD&E evaluation, the Signature Bridge was selected as the preferred alternative. Total cost for the entire Signature Bridge project was estimated at 600 Million with the Signature Bridge structure alone accounting for 70 Million. A conceptual cost estimate based on the rendering involving depressing a portion of the I-395 freeway as well as a portion of SR 5/Biscayne Boulevard near downtown Miami provided by Miami-Dade County Commissioner Xavier Suarez was prepared in order to evaluate net change in cost (See Appendix D). The net increase in cost between the I-395 /Biscayne Boulevard tunnel concept and the I-395 Signature Bridge Project evaluated the cost of both alternatives within the limits defined by the rendering (See Figure 1.A). A summary of the cost estimate is presented below: Table 1: Cost of I-395/Biscayne Boulevard Tunnel Concept No. Description Cost 1 2 Total Construction Cost for I-395 Tunnel and Biscayne Boulevard Tunnel Concept including roadway reconstruction of Miami Avenue, NE 1 st Avenue, NE 2 nd Avenue, and Biscayne Boulevard Frontage Road (As shown in Figure 2). Cost for additional impacts associated with the I-395 Tunnel and Biscayne Boulevard Tunnel Concept Utility Impacts: 58 Million (costs assumed not to be reimbursable; to be paid for by the utility agency/owner) Right of Way Acquisition: 125 Million Miami Dade Transit Metro Mover Infrastructure Impacts: 13 Million Contamination Mitigation: 27.3 Million 1,322,368, ,300,000 3 Grand Total 1,487,668,301* *Grand total does not include additional reimbursable costs associated with relocation of the FGT gas line Page 5 of 6

10 Table 2: Cost of I-395 Signature Bridge Project within Limits Defined by Rendering No. Description Cost 1 Cost for Signature Bridge Structure, I-395 Mainline / Ramp Connections, and local roads directly impacted and replaced by the proposed I-395 Tunnel concept. 171,518,658 Net Increase in cost = (Cost of I-395/Biscayne Boulevard Tunnel Concept) (Cost of I-395 Signature Bridge Project within Limits Defined by Rendering) 1,316,149,643* Based on the cost estimates shown above, the net estimated increase in cost of the I- 395/Biscayne Boulevard tunnel concept when compared to the I-395 signature bridge project amounts to a total of 1,316,149,643*. Page 6 of 6

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16 Appendix A (Right of Way Cost Estimates)

17 PRELIMINARY

18 PRELIMINARY

19 Appendix B (Contaminated Soil Disposal Cost Estimate)

20 CB&I Environmental & Infrastructure, Inc. Cost Estimate Worksheet Project Name: Biscayne Tunnel Assessment Task Description: Soil Load-out and Disposal LOA #, Task #: TBD FDOT Project No.: TBD FDOT Contract #: BDT36 WPCE Date: 7/30/2014 Revision No.: Work Duration: 106 days Work Week: 5 days Work Day: 10 hours Description SUMMARY NE 8th Street to NE 11th Street: Labor 951, Equipment 242, Construction and Heavy Equipment 279, Expendables 25, Analytical 117, Transport and Disposal 20,215, Pass-throughs 2, NE 14th Street to NE 17th Street: Labor Equipment 21,834, , , Construction and Heavy Equipment 69, Expendables 6, Analytical 30, Transport and Disposal 5,053, Pass-throughs TOTAL ESTIMATED AMOUNT TOTAL REQUESTED AMOUNT Subtotal Subtotal PRELIMINARY 5,460, ,295, ,295, of 7

21 CB&I Environmental & Infrastructure, Inc. Cost Estimate Worksheet Project Name: Biscayne Tunnel Assessment (NE 8th St. to NE 11th St.) WPCE Date: 7/30/2014 Task Description: Soil Load-out and Disposal Revision No.: LOA #, Task #: TBD Work Duration: 85 days FDOT Project No.: TBD Work Week: 5 days FDOT Contract #: BDT36 Work Day 10 hours Item No. Direct Labor Item Description Item QTY Unit Type Unit QTY Total No. of Units Unit Rate Cost Project Management 1-2 Contract Manager 1 hour , Project Manager 1 hour , Task Manager 1 hour , Administrative Assistant 1 hour , Health & Safety Plan Preparation 1-2 Contract Manager 1 hour Project Manager 1 hour Certified Industrial Hygienist 1 hour Industrial Hygienist 1 hour Project Kick-off Meeting 1-2 Contract Manager 1 hour Project Manager 1 hour Task Manager 1 hour Project Scientist 1 hour Staff Scientist 1 hour Administrative Assistant 1 hour Supervisor 1 hour Field Foreman 1 hour Equipment Operator 5 hour , Truck Driver 4 hour Technician/Laborer 4 hour Soil Load-out and Disposal Activities* 1-7 Staff Scientist 1 hour , Supervisor 1 hour , Supervisor (OT) 1 hour , Field Foreman 1 hour , Field Foreman (OT) 1 hour , Equipment Operator (loaders) 4 hour , Equipment Operator (loaders) (OT) 4 hour , Equipment Operator (dozer) 1 hour , Equipment Operator (dozer) (OT) 1 hour , Truck Driver (dump trucks) 4 hour , Truck Driver (dump trucks) (OT) 4 hour , Technician/Laborer (flagmen) 4 hour , Technician/Laborer (flagmen) (OT) 4 hour , PRELIMINARY Source Removal Report 1-2 Contract Manager 1 hour Project Manager 1 hour Project Scientist 1 hour , Staff Scientist 1 hour , Draftsperson 1 hour , Administrative Assistant 1 hour Direct Labor Total 951, of 7

22 CB&I Environmental & Infrastructure, Inc. Cost Estimate Worksheet Project Name: Biscayne Tunnel Assessment (NE 8th St. to NE 11th St.) WPCE Date: 7/30/2014 Task Description: Soil Load-out and Disposal Revision No.: LOA #, Task #: TBD Work Duration: 85 days FDOT Project No.: TBD Work Week: 5 days FDOT Contract #: BDT36 Work Day 10 hours Item No. Item Description Item QTY Unit Type Unit QTY Total No. of Units Unit Rate Cost 2-4 Pick-up Truck 8 day , Truck (dump, 15 CY) 4 day , Organic Vapor Analyzer (OVA)/ Flame Ionization Detector (FID) 1 day , , Construction/Excavation and Heavy Equipment 6-7 Dozer CAT D-6 1 day , Storage Trailer 1 day , Wheel Loader, (Cat 966) 4 day , , Expendables 8-28 Visqueen 4 roll/per day , , Analytical 9-3 Kerosene Analytical Group 610 each , Transport and Disposal Transportation & Disposal-petroleum Contaminated Soil (non-hazardous) 117, ton 421, , ,215, ,215, Pass-throughs Port-o-Let Rental 4 day , * = Estimated production of 5,000 tons per day and no night or weekend work FID = Flame Ionization Detector No = Number OT = overtime OVA = Organic Vapor Analyzer QTY = Quantity Equipment Equipment Total Construction/Excavation and Heavy Equipment Total Expendables Total Analytical Total Estimated Total Legend and Comments Section Transport and Disposal Total PRELIMINARY Pass-throughs Total 2, ,834, of 7

23 CB&I Environmental & Infrastructure, Inc. Cost Estimate Worksheet Project Name: Biscayne Tunnel Assessment (NE 14th St. to NE 17th St.) WPCE Date: 7/30/2014 Task Description: Soil Load-out and Disposal Revision No.: LOA #, Task #: TBD Work Duration: 21 days FDOT Project No.: TBD Work Week: 5 days FDOT Contract #: BDT36 Work Day 10 hours Item No. Direct Labor Item Description Item QTY Unit Type Unit QTY Total No. of Units Unit Rate Cost Project Management 1-2 Contract Manager 1 hour , Project Manager 1 hour , Task Manager 1 hour , Administrative Assistant 1 hour , Health & Safety Plan Preparation 1-2 Contract Manager 1 hour Project Manager 1 hour Certified Industrial Hygienist 1 hour Industrial Hygienist 1 hour Project Kick-off Meeting 1-2 Contract Manager 1 hour Project Manager 1 hour Task Manager 1 hour Project Scientist 1 hour Staff Scientist 1 hour Administrative Assistant 1 hour Supervisor 1 hour Field Foreman 1 hour Equipment Operator 5 hour Truck Driver 4 hour Technician/Laborer 4 hour Soil Load-out and Disposal Activities* 1-7 Staff Scientist 1 hour , Supervisor 1 hour , Supervisor (OT) 1 hour , Field Foreman 1 hour , Field Foreman (OT) 1 hour , Equipment Operator (loaders) 4 hour , Equipment Operator (loaders) (OT) 4 hour , Equipment Operator (dozer) 1 hour , Equipment Operator (dozer) (OT) 1 hour , Truck Driver (dump trucks) 4 hour , Truck Driver (dump trucks) (OT) 4 hour , Technician/Laborer (flagmen) 4 hour , Technician/Laborer (flagmen) (OT) 4 hour , PRELIMINARY Source Removal Report 1-2 Contract Manager 1 hour Project Manager 1 hour Project Scientist 1 hour , Staff Scientist 1 hour , Draftsperson 1 hour Administrative Assistant 1 hour Direct Labor Total 239, of 7

24 CB&I Environmental & Infrastructure, Inc. Cost Estimate Worksheet Project Name: Biscayne Tunnel Assessment (NE 14th St. to NE 17th St.) WPCE Date: 7/30/2014 Task Description: Soil Load-out and Disposal Revision No.: LOA #, Task #: TBD Work Duration: 21 days FDOT Project No.: TBD Work Week: 5 days FDOT Contract #: BDT36 Work Day 10 hours Item No. Item Description Item QTY Unit Type Unit QTY Total No. of Units Unit Rate Cost 2-4 Pick-up Truck 8 day , Truck (dump, 15 CY) 4 day , Organic Vapor Analyzer (OVA)/ Flame Ionization Detector (FID) 1 day , , Construction/Excavation and Heavy Equipment 6-7 Dozer CAT D-6 1 day , Storage Trailer 1 day Wheel Loader, (Cat 966) 4 day , , Expendables 8-28 Visqueen 4 roll/day , , Analytical 9-3 Kerosene Analytical Group 1 each , Transport and Disposal Transportation & Disposal-petroleum Contaminated Soil (non-hazardous) 30, ton 105, , ,053, ,053, Pass-throughs Port-o-Let Rental 4 day * = Estimated production of 5,000 tons per day and no night or weekend work FID = Flame Ionization Detector No = Number OT = overtime OVA = Organic Vapor Analyzer QTY = Quantity Equipment Equipment Total Legend and Comments Section Construction/Excavation and Heavy Equipment Total Expendables Total Analytical Total Transport and Disposal Total PRELIMINARY Pass-throughs Total Estimated Total ,460, of 7

25 Biscayne Tunnel Assessment I. Volume of excavation from NW 8th St. to NE 11th St.: W (ft.) D (ft.) L (ft.) V (CF) V (CY) F (Tn/CY) Wt (Tn) ,423, , ,152 Legend: CF = Cubic Feet CY = Cubic Yard F = Conversion Factor ft. = Feet D = Depth ft. = Feet L = Length Tn = Ton V = Volume W = Width Wt = Weight II. Volume of excavation from NE 14th St. to NE 17th St.: W (ft.) D (ft.) L (ft.) V (CF) V (CY) F % W (Tn) ,423, , ,288 Legend: % = Percent estimated for disposal CF = Cubic Feet CY = Cubic Yard F = Conversion Factor ft. = Feet D = Depth ft. = Feet L = Length Tn = Ton V = Volume W = Width Wt = Weight III. CB&I Field Personnel: Staff Scientist 1 Supervisor 1 Field Foreman 1 Operators 5 Truck Drivers 4 Laborers 4 Total 16 PRELIMINARY 6 of 7 CB&I Environmental & Infrastructure, Inc.

26 Biscayne Tunnel Assessment IV. CB&I Construction Equipment Pickup Trucks 8 Dump Trucks 4 OVA 1 Dozer 1 Storage Trailer 1 Loader 4 Port o let 4 V. Assumptions: a. Soil to be excavated by the contractor b. Soil to be loaded into dump trucks by the contractor c. Production estimated at 5,000 tons per day d. No hazardous waste is encountered e. No night or weekend work f. 10 hour work days; 5 days per week; estimate 106 total days g. Staging area to be provided by the contractor h. Minimum staging area of approximately 3 to 5 acres required i. No dewatering and/or groundwater treatment is included in this cost estimate VI. CB&I Scope: a. Provide equipment and personnel to truck the soils to the staging area b. Provide equipment and personnel to manage the staging area c. Provide equipment and personnel to load put and dispose petroleum contaminated soils d. Provide equipment and personnel to sample and analyze the soils per the requirements of FAC PRELIMINARY 7 of 7 CB&I Environmental & Infrastructure, Inc.

27 Appendix C (Rendering Received on September 3, 2014)

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29 Appendix D (I-395 Tunnel and Biscayne Tunnel Project Cost Estimate)

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33 PRELIMINARY

34 20 SIGNALIZATION 20 PI 400,000 8,000,000 TOTAL ITEM 20 8,000, FIRE PREVENTION SYSTEM 1 LS 5,000,000 5,000,000 TOTAL ITEM 21 5,000,000 SUB-TOTAL 166,815,000 Total 734,649,056 ITS 5% 36,732,453 LIGHTING 5% 36,732,453 SPM 2% 14,692,981 MOT 20% 146,929,811 Mobilization 15% 110,197,358 Contingencies 10% 73,464,906 CEI 8% 58,771,924 Eng/Admin/Legal 15% 110,197,358 Total 1,322,368,301 PRELIMINARY T:\DesignGroup_Manso\_DDE_Support\Tunnel_Analysis\Tunnel Section_Construction Cost_ _revised_GP_comments 2