CN-370000-BS135-T1CO5.pdf

Inundation Modeling and Mapping and Emergency Action Plan Completion for

Lake Locklin Dam, City of Milton, Santa Rosa County, FL, Holley Lake Dam, DeFuniak Springs, Walton County, FL and Juniper Lake Dam, DeFuniak Springs, Walton County, FL

SCOPE OF SERVICES

Effective as of July 29, 2019, in accordance with Task 1

Background and Project Description:

The State of Florida Dam Safety Program (FDSP) is administered by the Engineering, Hydrology, and Geology Program in the Division of Water Resource Management, Florida Department of Environmental Protection (FDEP). The Florida National Dam Safety Program Grant for FY2018 and FY2019 has approved the use of grant funds to conduct inundation mapping and prepare Emergency Action Plans (EAPs) for a number of high-hazard and significant hazard potential dams in Florida.

This proposal is a request for inundation modeling and mapping and EAP completion for the following three (3) dam site locations:

▪ DAM SITE 1 - Locklin Lake Dam, City of Milton, Santa Rosa County, FL

▪ DAM SITE 2 - Holly Lake Dam, near DeFuniak Springs, Walton County, FL

▪ DAM SITE 3 – Juniper Lake Dam, near DeFuniak Springs, Walton County, FL

Locklin Lake Dam is located on an unnamed tributary to the Blackwater River in Santa Rosa County, Florida, within the city limits of Milton, FL, Refer to Figure1 in Appendix C. Holley Lake Dam is located near DeFuniak Springs, Walton County, FL on an unnamed tributary to the Narrows Creek tributary to Gum Creek, refer to Figure 2 in Appendix C. Juniper Dam is located on an unnamed tributary to Narrows Creek near DeFuniak Springs, Walton County, FL, refer to Figure 3 in Appendix C. The current work effort will be to perform inundation mapping with a breach in each of the listed dams. For this project, the consultant shall test two scenarios of failure ( e.g. at the dam outlet and at the spillway locations). Note the latest available LIDAR information (2017 or later) shall be used and all data reported in NAVD88 datum.

The purpose of this project is as follows:

1) Provide FDEP and the respective Dam Owners, with inundation mapping and modeling for particularly large areas which have or may have collectively a High Hazard Potential (HHP) risk associated with each of the dam site locations.

2) Simulate dam breaches for each of the three dams based on a Sunny Day and 100-year storm events and prepare matching inundation maps based on the results. HEC-RAS, Version 5.0.7 shall be used as the model selected for developing the breach hydrographs, performing hydraulic routing, and providing peak water surface profile and hydrograph information at critical downstream locations.

3) Prepare a customized inundation mapping based on the modeling results for each dam site.

4) Provide FDEP and the Dam Owners, with comprehensive Emergency Action Plans (EAPs) for each dam listed above.

Tasks within the Scope of Work:

Conduct Inundation modeling and mapping for inclusion in EAPs for each dam. The Inundation modeling necessary for the development of the EAP will require conducting a dam break analyses (using a computer modeling) and preparing inundation maps based on HEC - RAS 5.0.7. Prepare an EAP in accordance with the FDEP Emergency Action Plan Template for Florida Dams dated December 2011 (hereafter referred to as the EAP Template). Development of the EAP will require utilizing the previously prepared inundation modeling and mapping. The work will consist of the following tasks:

1. Data Collection

1.1 Conduct one site visit to each dam, that conforms with the following:

1) E-mail notification to the FDSP at least one week prior to each scheduled site visit.

The notification should include the date, time, meeting location, and the vendor contact name and phone numbers (office and cell). The e-mail notification should be sent to Tracy.Woods@FloridaFDEP.gov and James.Landini@FloridaFDEP.gov

2) Confirm the dam data and collect any additional data necessary to perform the dam break analyses.

3) Meet with each dam owner or their representative to obtain the information necessary to complete details of the inundation maps.

4) Meet with the Northwest Florida Water Management District and obtain copies of dam permit data and recent Compliance Inspection reports for each dam.

DELIVERABLE:

1.) Provide an electronic version of pertinent documents obtained from each dam owner, including original design plans, inspections, maintenance records, photographs, and field inspection notes for each dam site location.

Performance Measure: Deliverables will be reviewed by the Department to confirm that they are complete, accurate, and timely.

1.2 Complete a Condition Assessment Report for a Florida Impounding Structure of each dam:

1) Fill out the Corps of Engineers inspection form.

DELIVERABLE:

1.) Provide a Condition Assessment Report for a Florida Impounding Structure for each dam inspected. The report will be certified by a Florida-Licensed Professional Engineer.

mailto:Tracy.Woods@FloridaFDEP.gov mailto:Tracy.Woods@FloridaFDEP.gov mailto:James.Landini@FloridaFDEP.gov mailto:James.Landini@FloridaFDEP.gov

2. Complete Inundation Mapping

2.1 Perform dam break and routing analysis for each dam site location using the selected computer modeling program and prepare inundation maps based on the results. The dam breaks at each dam shall be modeled for the 100- year 24- hour storm and sunny day failures as defined in Chapter 62-330, Florida Administrative Code, Northwest Florida Water Management District Applicant's Handbook, Volume II.

1.) Electronically submit a first draft report of the computer modeling analysis, overtopping and dam breach scenarios for each dam site, that includes the project information, analysis assumptions, methodology, model variables and parameters, HEC-RAS input and output data and GIS files including inundation map(s) for review by FDSP staff.

Performance Measure: Deliverables will be reviewed by the Department to confirm they are complete, accurate, and timely.

2.2 Perform dam overtopping analysis, as well as dam break and routing analysis for each dam for the ½ PMP storm event and prepare inundation maps based on the results. The methodology outlined in HYDROMETEOROLOGIAL REPORT No.51, Probable Maximum Precipitation Estimates, United States East of the 105th Meridian, published by the US Dept. of Commerce, National Oceanic and Atmospheric Administration, shall be used.

1.) If requested, electronically submit a second draft of the reports to incorporate revisions resulting from FDSP staff review comments for the first draft. Also, provide a separate cover letter summarizing the response to comments and the corresponding revisions to the draft report. Once approval of the Draft reports is received, submit a final electronic version incorporating the responses to FDSP review comments. Final reports will be signed, dated, and sealed by a Florida-Licensed Professional Engineer.

2.3 Compare the results of the different dam break scenarios and routing analyses at each dam site location.

1.) Electronically submit a first draft Comparative Breach analysis report of the scenarios considered at each dam site, for review by FDSP staff. The comparison shall include the flood inundation footprints, flood velocities, peak wave depths, and peak wave arrival times at selected locations and other pertinent information. Once approval of the Draft Comparative Breach analysis report is received, submit a final electronic version incorporating the response to FDSP review comments. The final report will be signed, dated, and sealed by a Florida-Licensed Professional Engineer.

2.4 Prepare inundation maps for each dam site and downstream locations showing contours with travel time and include the following:

1) A cover sheet for the map that is signed, dated, and sealed by a Florida-Licensed Professional Engineer.

2) Provide a map showing evacuation (safe travel roads) routes highlighted among the lateral roads. Lateral roads will still be needed for residents to see how they can get to the evacuation routes.

3) Medical facilities, fire rescue, police/sheriff offices, schools, supermarkets and other emergency facilities shown on the same map with drivable roads to and from facility.

4) Elevation of road versus elevation of flood stage to identify flooding. Parcels should be identified as a total number in a specific area that would flood per the 2017 (or latest available) LiDAR.

5) Inundation contours should show legible elevation labels.

6) Elapsed time between dam break/overtopping and the peak wave height at critical locations identified above. Times should be EST.

7) The goal is to define the breach flood until it is generally contained within channel limits and/or to the point where no other downstream structures will be significantly impacted.

1) Provide draft inundation maps for each EAP for each dam.

2.5 Prepare final inundation maps for each EAP for each dam.

1.) Provide final inundation maps for each dam site and downstream locations showing contours with travel times.

3. EAP Template Data Collection

3.1 Develop specific information for each EAP for each dam, that includes the following:

a. Identify triggering events which extend beyond those identified in Table 1.1 of the EAP Template for areas of the dam which pose additional concerns, if any.

b. Identify stakeholder involvement by all jurisdictions, agencies, and individuals that may be impacted by development of the EAP or a dam failure. Determine contacts with roles and responsibilities for entities listed in Table 2.1 of the EAP Template.

c. Identify primary and auxiliary communications methods.

d. Develop a list of persons to be notified during events, prioritize the notification order, and prepare a Notification Flowchart for inclusion in the EAP.

1) Provide a report that contains the EAP Template information for each EAP for each dam:

Table 1.1, Event Level Determination Guidance Table; Table 2.1, EAP Contact Table;

primary and secondary communication methods incorporated into the EAP Template;

and Figures 2.1 through 2.3 of the EAP Template.

4. EAP Preparation

4.1. Prepare draft EAP in accordance with the EAP Template and its associated Appendices.

1.) Electronically submit a first draft of the DRAFT EAP for review by FDSP staff.

4.2. Arrange to meet with the identified stakeholders for each dam in separate meetings on one day to go over the draft EAPs and solicit their comments.

1.) One Stakeholder Comments and Responses table including disposition of the response.

4.3. Prepare a final EAP for each dam, incorporating the necessary revisions based upon stakeholder review meeting and obtain all signatures.

1.) Electronically submit final versions of the EAP reports, incorporating the response to Stakeholder review comments: the submittal shall include three professional-quality hard-copies and three electronic PDF and source files on a thumb drive.

Key Personnel

FDEP

Role Name Entity

Project Manager Tracy Woods FDEP

Contract Administrator Avery Lehmann FDEP

Mott MacDonald

Project Principal Billy Perry Mott MacDonald

Project Manager Michael Layne Mott MacDonald

Project Engineer Chad Bowman Mott MacDonald

Principal Engineer Michael Cox Comak Group

Lead Engineer Georgio Tachiev Comak Group

Lake Locklin, City of Milton

Owner Contact Joe Cook Milton

Lake Holly near DeFuniak Springs

Owner Contact Patrick O’Neill Holly King Lakes

(HOA)

Juniper Lake near DeFuniak Springs

Owner Contact Neil Branson Div. of FF Mgmt

Project Schedule: CONSULTANT is available to begin work on this project immediately following receipt of an approved Task Order from FDEP. Project shall be completed by December 16, 2019, assuming Notice to Proceed is issued by July 29, 2019. See Appendix A for Detailed Schedule.

Compensation and Method of Payment

Compensation to be paid to the Consultant for providing the services described herein shall be on a lump sum basis. No compensation will be paid for services and/ or tasks that are not performed. The fixed-price lump sum compensation shall be $89,860.76. See Appendix B for Detailed Cost Estimate.

Invoices will be prepared for work completed as outlined in an accompanying description of work completed in accordance with the attached Cost Estimate. Full compensation will not be paid until the task has been completed and approved by the FDEP.

Appendix A

Proposed Schedule

ID Task

Mode

Task Name Duration Start Finish Resource Names

1 Notice to Proceed 1 day Wed 7/31/19 Wed 7/31/19

2 Task 1 - Data Collection 37 days Thu 8/1/19 Fri 9/20/19

3 Site Visits and Data Collection 12 days Thu 8/1/19 Fri 8/16/19

4 Condition Assesment Report 25 days Mon 8/19/19 Fri 9/20/19

5 Task 2 - Complete Inundation Mapping 66 days Mon 9/16/19 Mon 12/16/19

6 Locklin Lake DRAFT Inundation Mapping and Comparative Breach Analysis Report

12 days Mon 9/16/19 Tue 10/1/19

7 Juniper Lake DRAFT Inundation Mapping and Comparative Breach Analysis Report

19 days Mon 9/30/19 Thu 10/24/19

8 Holley Lake DRAFT Inundation Mapping and Comparative Breach Analysis Report

20 days Mon 10/7/19 Fri 11/1/19

9 Submit FINAL Inundation Mapping and Comparative Breach Analysis Reports

31 days Mon 11/4/19 Mon 12/16/19

10 Task 3: EAP Template Data Collection 27 days Mon 10/28/19 Tue 12/3/19

11 EAP Template Information Report 27 days Mon 10/28/19 Tue 12/3/19

12 Task 4: Complete EAP Report 16 days Mon 11/25/19 Mon 12/16/19

13 DRAFT EAP 8 days Mon 11/25/19 Wed 12/4/19

14 Stakeholder Review Meeting 1 day Mon 12/9/19 Mon 12/9/19

15 FINAL EAP 5 days Tue 12/10/19 Mon 12/16/19

T W T F S S M T

Jul 28, '19 Aug 4, '19

Task

Split

Milestone

Summary

Project Summary

Inactive Task

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

External Tasks

External Milestone

Deadline

Progress

Manual Progress

Project: EAP Schedule - Locklin, Date: Fri 11/22/19

Appendix B

Cost Estimate

DAM SITE FEE

Locklin Lake Dam $32,643.30

Holly Lake Dam $30,716.82

Juniper Lake Dam $26,500.64

TOTAL $89,860.76

ENGINEERING SERVICES ESTIMATE

FDEP Florida Dam Safety Program

Locklin Lake Dam Inundation Modeling and Mapping and EAP Completion MM MM MM MM MM Comak Comak Comak Comak Comak Comak MM MM

TASK NAME/ DESCRIPTION PERSONNEL

Project

Principal

Senior Project

Manager

Project

Engineer Engineer I Technician

Principal

Engineer

Chief

Consulting

Engineer

Lead

Engineer Engineer Technician

Engineering

Assistant CAD Admin. Assist. Manhour Totals

Comak

TOTAL

Comak

Expenses MM TOTAL

MM

Expenses

SUBTASK

TOTAL TASK TOTAL

HOURLY RATE $240.63 $170.20 $120.01 $75.24 $43.72 $218.48 $186.90 $158.88 $109.92 $87.96 $65.71 $92.21 $58.38 TOTAL Expenses TOTAL TOTAL

Task 1 - Data Collection

1.1 Site Visit (1) - including inspection of the dam and appurtenances 1 16 16 33 $6,037.76 $0.00 $170.20 $0.00 $6,207.96

1.2 Data review and compilation - including completing Corps of Engineers inspection form 2 8 10 20 $3,336.64 $340.40 $3,677.04

Task 1 Sub Total 3 24 0 26 0 0 0 0 0 53 $9,374.40 $0.00 $510.60 $0.00 $9,885.00 $9,885.00

Task 2 - Complete Inundation Mapping

2.1 Perform Breach Analyses- 100 yr & Sunny Day Modeling for Inundation Mapping 1 8 18 4 31 $4,607.68 $539.04 $5,146.72

2.2 Perform 1/2 PMP Overtopping and Breach Analyses modeling for Inundation Mapping 1 6 16 4 27 $3,852.96 $539.04 $4,392.00

2.3 Compare Breach Scenarios Analyses & Prepare Modeling Report 2 2 8 4 16 $1,708.00 $709.24 $2,417.24

2.4 Prepare DRAFT Inundation Maps (IMs) for EAP 2 1 8 16 27 $1,489.52 $1,815.76 $3,305.28

2.5 Prepare and Submit FINAL Inundation Maps (IMs) for EAP 2 1 2 4 9 $536.24 $709.24 $1,245.48

Task 2 Sub Total 8 0 0 0 18 0 52 0 0 0 32 0 110 $12,194.40 $0.00 $4,312.32 $0.00 $16,506.72 $16,506.72

Task 3 - EAP Data Collection

3.1 Data review and compilation - including completing maps 4 4 12 20 $0.00 $1,506.40 $1,506.40 Task 3 Sub Total 4 0 4 12 0 0 0 0 0 0 0 0 20 $0.00 $0.00 $1,506.40 $0.00 $1,506.40 $1,506.40

Task 4 - EAP Preparation

4.1 Complete DRAFT EAP 4 4 16 3 27 $560.70 $1,681.28 $2,241.98

4.2 Stakeholder Review Meeting 6 2 4 12 $0.00 $1,346.56 $1,346.56

4.3 Complete FINAL EAP 4 4 4 12 $0.00 $1,156.64 $1,156.64

Task 4 Sub Total 14 0 10 24 0 3 0 0 0 0 0 0 51 $560.70 $0.00 $4,184.48 $0.00 $4,745.18 $4,745.18

0 11 0 0 0 42 0 78 0 0 0 32 0 163 $21,568.80 $0.00 $4,822.92 $0.00 $26,391.72 $32,643.30

Total $32,643.30

Notes:

(1) Assumes a Skype / Remote Communication Meeting - with in person attendance by PM.

Page 1 of 3 Updated: 11/22/2019

Holley Lake Dam Inundation Modeling and Mapping and EAP Completion MM MM MM MM MM Comak Comak Comak Comak Comak Comak MM MM

TASK NAME/ DESCRIPTION PERSONNEL

Project

Principal

Senior Project

Manager

Project

Engineer Engineer I Technician

Principal

Engineer

Chief

Consulting

Engineer

Lead

Engineer Engineer Technician

Engineering

Assistant CAD Admin. Assist. Manhour Totals

Comak

TOTAL

Comak

Expenses MM TOTAL

MM

Expenses

SUBTASK

TOTAL TASK TOTAL

HOURLY RATE $240.63 $170.20 $120.01 $75.24 $43.72 $218.48 $186.90 $158.88 $109.92 $87.96 $65.71 $92.21 $58.38 TOTAL Expenses TOTAL TOTAL

Task 1 - Data Collection

1.1 Site Visit (1) - including inspection of the dam and appurtenances 1 16 16 33 $6,037.76 $0.00 $170.20 $0.00 $6,207.96

1.2 Data review and compilation - including completing Corps of Engineers inspection form 2 5 6 13 $2,045.68 $340.40 $2,386.08

Task 1 Sub Total 3 21 0 22 0 0 0 0 0 46 $8,083.44 $0.00 $510.60 $0.00 $8,594.04 $8,594.04

Task 2 - Complete Inundation Mapping

2.1 Perform Breach Analyses- 100 yr & Sunny Day Modeling for Inundation Mapping 1 8 18 4 31 $4,607.68 $539.04 $5,146.72

2.2 Perform 1/2 PMP Overtopping and Breach Analyses modeling for Inundation Mapping 1 6 16 4 27 $3,852.96 $539.04 $4,392.00

2.3 Compare Breach Scenarios Analyses & Prepare Modeling Report 2 2 6 4 14 $1,390.24 $709.24 $2,099.48

2.4 Prepare DRAFT Inundation Maps (IMs) for EAP 2 1 6 16 25 $1,171.76 $1,815.76 $2,987.52

2.5 Prepare and Submit FINAL Inundation Maps (IMs) for EAP 2 1 2 4 9 $536.24 $709.24 $1,245.48

Task 2 Sub Total 8 0 0 18 0 48 0 0 0 32 0 106 $11,558.88 $0.00 $4,312.32 $0.00 $15,871.20 $15,871.20

Task 3 - EAP Data Collection

3.1 Data review and compilation - including completing maps 4 4 12 20 $0.00 $1,506.40 $1,506.40 Task 3 Sub Total 4 0 4 12 0 0 0 0 0 0 0 0 20 $0.00 $0.00 $1,506.40 $0.00 $1,506.40 $1,506.40

Task 4 - EAP Preparation

4.1 Complete DRAFT EAP 4 4 16 3 27 $560.70 $1,681.28 $2,241.98

4.2 Stakeholder Review Meeting 6 2 4 12 $0.00 $1,346.56 $1,346.56

4.3 Complete FINAL EAP 4 4 4 12 $0.00 $1,156.64 $1,156.64

Task 4 Sub Total 14 0 10 24 0 3 0 0 0 0 0 0 51 $560.70 $0.00 $4,184.48 $0.00 $4,745.18 $4,745.18

0 11 0 0 0 39 0 70 0 0 0 32 0 152 $19,642.32 $0.00 $4,822.92 $0.00 $24,465.24 $30,716.82

Total $30,716.82

Notes:

Page 2 of 3 Updated: 11/22/2019

Juniper Lake Dam Inundation Modeling and Mapping and EAP Completion MM MM MM MM MM Comak Comak Comak Comak Comak Comak MM MM

TASK NAME/ DESCRIPTION PERSONNEL

Project

Principal

Senior Project

Manager

Project

Engineer Engineer I Technician

Principal

Engineer

Chief

Consulting

Engineer

Lead

Engineer Engineer Technician

Engineering

Assistant CAD Admin. Assist. Manhour Totals

Comak

TOTAL

Comak

Expenses MM TOTAL

MM

Expenses

SUBTASK

TOTAL TASK TOTAL

HOURLY RATE $240.63 $170.20 $120.01 $75.24 $43.72 $218.48 $186.90 $158.88 $109.92 $87.96 $65.71 $92.21 $58.38 TOTAL Expenses TOTAL TOTAL

Task 1 - Data Collection

1.1 Site Visit (1) - including inspection of the dam and appurtenances 1 8 8 17 $3,018.88 $0.00 $170.20 $0.00 $3,189.08

1.2 Data review and compilation - including completing Corps of Engineers inspection form 2 4 7 13 $1,986.08 $340.40 $2,326.48

Task 1 Sub Total 3 12 0 15 0 0 0 0 0 30 $5,004.96 $0.00 $510.60 $0.00 $5,515.56 $5,515.56

Task 2 - Complete Inundation Mapping

2.1 Perform Breach Analyses- 100 yr & Sunny Day Modeling for Inundation Mapping 1 8 16 4 29 $4,289.92 $539.04 $4,828.96

2.2 Perform 1/2 PMP Overtopping and Breach Analyses modeling for Inundation Mapping 1 6 12 4 23 $3,217.44 $539.04 $3,756.48

2.3 Compare Breach Scenarios Analyses & Prepare Modeling Report 2 2 6 4 14 $1,390.24 $709.24 $2,099.48

2.4 Prepare DRAFT Inundation Maps (IMs) for EAP 2 1 6 16 25 $1,171.76 $1,815.76 $2,987.52

2.5 Prepare and Submit FINAL Inundation Maps (IMs) for EAP 2 1 2 2 7 $536.24 $524.82 $1,061.06

Task 2 Sub Total 8 0 0 18 0 42 0 0 0 30 0 98 $10,605.60 $0.00 $4,127.90 $0.00 $14,733.50 $14,733.50

Task 3 - EAP Data Collection

3.1 Data review and compilation - including completing maps 4 4 12 20 $0.00 $1,506.40 $1,506.40 Task 3 Sub Total 4 0 4 12 0 0 0 0 0 0 0 0 20 $0.00 $0.00 $1,506.40 $0.00 $1,506.40 $1,506.40

Task 4 - EAP Preparation

4.1 Complete DRAFT EAP 4 4 16 3 27 $560.70 $1,681.28 $2,241.98

4.2 Stakeholder Review Meeting 6 2 4 12 $0.00 $1,346.56 $1,346.56

4.3 Complete FINAL EAP 4 4 4 12 $0.00 $1,156.64 $1,156.64

Task 4 Sub Total 14 0 10 24 0 3 0 0 0 0 0 0 51 $560.70 $0.00 $4,184.48 $0.00 $4,745.18 $4,745.18

0 11 0 0 0 30 0 57 0 0 0 30 0 128 $15,610.56 $0.00 $4,638.50 $0.00 $20,249.06 $26,500.64

Total $26,500.64

Notes:

Page 3 of 3 Updated: 11/22/2019

Appendix C

Figures

Figure 1. DAM SITE 1 - Locklin Lake Dam

Locklin Lake

Dam

Figure 2. DAM SITE 2 - Holly Lake Dam

Holly Lake

Figure 3. DAM SITE 3 - Juniper Lake Dam

Juniper Lake