CN-370000-BS136-T29.pdf

ATTACHMENT C – TASK ASSIGNMENT FORM

Task Assignment Number:

FIXED-PRICE FEE SCHEDULE COST REIMBURSEMENT

CONTRACTOR FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION

Date Project Manager Date

Contract Manager Date

Budget Representative Date

Contractual Authority Date cc: Procurement Section (MS93) Bureau of Finance & Accounting (MS78) - 2 copies

Funding Information:

TOTAL TASK ASSIGNMENT VALUE

Deliverables: See attached Scope of Work

Performance Measures:

TASK ASSIGNMENT TYPE AND NOT TO EXCEED AMOUNTS:

Org. Code

DEP CONTRACT NO.____

Date:

Financial Consequences: As per Professional Services Contract No BS136 between DEP and Atkins North America, Inc.

Period of Performance: Execution of Task Assignment through

|E.O. |Object Code |Budget Entity|Special Category | |YearGrant # |Amount________

APPROVED:

Contract Manager Matthew Taylor

As per Professional Services Contract No BS136, work activities will be reviewed by FDEP to ensure that they are complete, accurate, and timely

BS136

Contractor Name: Atkins North America, Inc

Contractor Representative: Matthew Taylor

DEP Contract Manager: Chelsey Sliger

Task Description (Use additional sheets if necessary):

Chelsey Sliger

37350400000 LR 131500 37350400 100628 BIL24 46,992.67

Digitally signed by Avery Lehmann Date: 2024.10.02 17:12:30 -04'00'

Tracy Woods Digitally signed by Tracy Woods Date: 2024.10.02 17:15:38 -04'00'

Chelsey E.

Sliger

Digitally signed by Chelsey E. Sliger Date: 2024.10.03 08:30:41 -04'00'

Digitally signed by John Coates Date: 2024.10.03 12:53:03 -04'00'

PERK6625

Typewriter

PERK6625

Typewriter 9/11/2024

PERK6625

Typewriter Documentation of methodology, modeling of PAR using DSS-WISE Lite, and training on DSS-WISE Lite and P-946 (July 2013).

PERK6625

Typewriter March 11, 2025

PERK6625

Typewriter 46,992.67

PERK6625

Typewriter $ 46,992.67

Matthew Taylor Typewriter 9/11/2024

Woods_T Underline

September 11, 2024

Ms. Woods, P.G.

State Dam Safety Officer Program & Technical Services Division of Water Resource Management Florida Department of Environmental Protection (DEP) 2600 Blair Stone Road Tallahassee, FL 32399

RE: DEP WR Contract: BS136 Project Proposal

Dam Safety Support- Development of data for state-regulated dams to support DEP evaluation of hazard potential classification updates to the National Inventory of Dams (NID)

Dear Ms. Woods:

At your request, AtkinsRéalis (Atkins) is pleased to provide this proposal to provide technical support including development of data for state regulated dams and assistance to the Florida DEP (FDEP) in the state’s effort to reevaluate the downstream hazard potential classifications for dams identified in the NID.

Background

The FDEP is the state agency responsible for regulating dam safety in support of the National Dam Safety Program (NDSP). DEP and the five Florida Water Management Districts form the Florida Dam Safety Program, with regulatory authority assigned by geographic coverage area, ownership, or use.

In support of the NDSP, FDEP provides data to the US Army Corps of Engineers who maintain the NID.

The NID has 1070 state regulated dams in Florida.

The NID includes data related to the regulated dams. It is common across the US that the physical data for dams listed in the NID was developed many years ago and may not accurately reflect the present-day physical data related to the regulated dam.

In Florida, the determination of the downstream hazard potential classifications of state regulated inventory of dams has been sporadically updated. According to the NID, Florida has 95 state regulated high hazard potential dams. A high downstream hazard potential dam classification is based on the determination for a potential for loss of life in the event of a dam failure.

According to the NID, Florida has 335 state regulated significant hazard potential dams, 433 low hazard potential dams, and 207 unknown hazard potential dams.

From a public safety perspective, it is important to accurately document the downstream hazard potential classification for the dam inventory. Florida has experienced extremely strong population growth, and the current downstream hazard potential classifications may have increased due to downstream development. It is critically important to focus on the 975 dams in the state regulated inventory that are not classified as high hazard potential to determine whether the potential for life loss exists in the event of a dam failure and the hazard potential classification should be identified as high hazard.

In 2023, FDEP invested in a modification to the DSS-WISE™ Lite dam breach modeling and mapping tool in anticipation of reevaluating the downstream hazard potential classifications of dams. DSS- WISE™ Lite is a web-based, automated two-dimensional dam-break flood modeling and mapping capability developed by the National Center for Computational Hydroscience and Engineering (NCCHE), the University of Mississippi. The development of the web-based tool and its operation and maintenance is supported by the U.S. Federal Emergency Management Agency (FEMA)

The purpose of this project is to focus on a sample segment of the 975 state regulated dams listed in the NID that are not categorized as high hazard potential, particularly those with an undetermined downstream hazard potential. Since dam breach flood inundation mapping may not be readily available for most the 975 dams to document whether population at risk is in the dam breach flood inundation area, a phased screening process will be used to identify dams likely to be high hazard potential and dams not likely to be high hazard potential. DSS-WISE Lite modeling will be performed for sunny day failures at the estimated top of dam elevations to confirm the population at risk (PAR) in the dam breach inundation zone, thereby indicating dams with high hazard potential classifications.

This is a pilot application of using DSS-WISE Lite on a segment of the regulated dams in Florida.

The lessons learned and number of hours needed to conduct blocks of dams to estimate PAR using DSS-WISE Lite will be documented. This will provide FDEP data for budgeting purposes to perform additional DSS-WISE Lite modeling for future blocks of dams.

As part of this project, AtkinsRéalis will develop and test new methodology to estimate missing dam physical data from available terrain that is required to run DSS-WISE Lite. It is anticipated that data gaps exist for many dams such dam height, dam elevation, and storage volume to top of dam that will need to be estimated from terrain for use in DSS-WISE Lite modeling.

The following scope of work identifies the methodology that will be used for this project.

Scope of Work

The work is divided into four tasks.

Task 1-Documentation of the methodology to fill data gaps and estimate PAR

Task 2- DSS-WISE Lite modeling to estimate FL PAR for select dams

Task 3- FDEP training on the use of DSS-WISE Lite

Task 4- Training of FEMA P-946 (July 2013) for use on Florida regulated dams

Task 1. Documentation of the methodology for filling data gaps and estimating potential life loss

PAR in dam breach inundation areas is typically determined by identifying the presence, even partially, of residential and non-residential building structures located in the dam breach flood inundation area.

This first task is to document the methodology that will be used to define PAR. Transient PAR, such as the temporary presence of populations typically associated with recreational activities or on high traffic count roadways that transect dam breach inundation areas will not be considered.

The methodology used in Virginia to consider traffic counts for specific categories of roadways will be documented for consideration by Florida.

In addition, standard procedures and methodology will be documented for modeling of dam failures using DSS-WISE Lite. To run the model a location, top of dam elevation, and a storage volume is needed. The NID contains some of the required data but for many dams there may be data gaps.

For instance, the dam hydraulic height, storage volume, and lake surface area at normal pool may be readily available. However, the top of dam elevation and the storage volume at top of dam may not be available to simulate a sunny day failure at dam brim full.

To minimize project cost, AtkinsRéalis proposes that the NID data be used as is and supplemented. For this effort, AtkinsRéalis will use the NID latitude and longitude to locate the dam on the Florida terrain previously developed by AtkinsRéalis for use in DSS-WISE Lite.

AtkinsRéalis did not keep a copy of the terrain dataset that was sent to FDEP on a portable hard disk. FDEP will need to provide the data back to AtkinsRéalis. Using the terrain, AtkinsRéalis will locate the dam (document new lat. and long. if needed). We will identify the top of dam elevation using the hydraulic height from the NID. Any major differences compared to the terrain will be noted and reconciled. Using terrain, the elevation of the normal pool (visual of lake surface) will be estimated. Using GIS techniques, a polygon will be established for the surface area upstream of the dam at the estimated top of dam elevation. The surface area at the top of dam and the surface area at normal pool that is identified in the NID will be used with the elevation difference from the normal pool to top of dam to establish the storage volume above normal pool. This will be calculated using a simple conic method. This volume added to the normal pool storage volume in the NID will establish the top of dam storage volume.

It is proposed to use DSS-WISE Lite to model a sunny day failure. A piping failure set at a specific standard (such as at 1/3 the dam height) will be performed. Breach parameters will be consistent with FEMA P-946. A standard method for estimating breach parameters will be used on this project.

DSS-WISE Lite has a consequence module that can be used to estimate PAR. The HCOM module uses a LandScan raster dataset to estimate PAR. For this project, DSS-WISE Lite will be used to calculate PAR.

A technical memorandum will be prepared to document the methodology and what datasets are to be used for determining the dam breach flood inundation areas and for estimation of PAR. The technical memorandum will document the dam breach scenario, how far downstream of the dam for which PAR will be determined, where data will be obtained for modeling the dam breach and mapping the flood inundation area and what models, and datasets will be used to establish

PAR.

Deliverables:

1. Draft technical memorandum.

2. Final technical memorandum addressing FDEP comments.

Performance Measures: Deliverables will be reviewed by DEP to confirm that they are complete, accurate, and timely.

Task 2. DSS-WISE Lite modeling to estimate FL PAR for select dams.

AtkinsRéalis will perform simplified dam breach modeling for the estimation of PAR for a portion of the 975 significant, low, and unknown hazard potential dams.

The number of dams to be modeled is dependent on potential for use of automation to mass produce may models quickly and the availability of data, a minimum of 50 sites will be evaluated.

AtkinsRéalis will recommend the initial list of dams to be studied starting first with undetermined risk dams then progressing to the significant and low hazard potential dams in that order. FDEP would have the final say in the selection of dams modeled and in what order.

The DSS-WISE Lite modeling will be performed consistent with the methodology developed as part of Task 1 and approved by FDEP.

Assumptions Some dams may have missing NID data, in addition to the missing stage storage at the top of dam, and those dams will be excluded from this list of dams for the determination of PAR.

It is assumed no more than 1.5 hours per dam for an engineer and 1.5 hours per dam for a GIS Specialist is required to complete the modeling and estimate for PAR.

AtkinsRealis will estimate PAR for a minimum of 50 dams using data included from the

NID.

AtkinsRealis will use NID data in the determination of the sunny day dam breach flood scenario.

The DSS-WISE HCOM module uses a depth times velocity method to estimate PAR.

No field observations, measurements or surveys will be performed.

Deliverables The following deliverables will be provided:

1. Draft DSS-WISE Lite generated reports for each dam, DSS-WISE Lite generated files, Digital datasets used to calculate PAR, and Excel spreadsheet with key dam data and the FL dam safety PAR.

2. Final DSS-WISE Lite generated reports for each dam, with consideration of DEP comments.

Performance Measures: Deliverables will be reviewed by DEP to confirm that they are complete, accurate, and timely.

Task 3- FDEP training on the use of DSS-WISE Lite

AtkinsRéalis will conduct a webinar via Teams with FDEP and invited guests on how to use DSS- WISE Lite, The Teams session will be recorded for use by FDEP for additional training.

AtkinsRéalis will provide up to two (2) office hours sessions with FDEP to review, troubleshoot, or conduct more one-on-one training on the use of DSS-WISE Lite.

Assumptions The office hours are virtual via Microsoft Teams No best practices or guidance documents on the use of DSS-WISE Lite will be developed.

Existing guidance prepared by NCCHE will be used.

Deliverables:

The following deliverables will be developed:

1. one (1) webinar on Teams and the recording of the webinar.

2. One (1) virtual hour office hours session not to exceed two (2) hours

Performance Measures: Deliverables will be reviewed by DEP to confirm that they are complete, accurate, and timely.

Task 4- Training of FEMA P-946 (July 2013) for use for Florida regulated dams

AtkinsRéalis will conduct a webinar via Teams with FDEP and invited guests on the content of P- 946 (July 2013). The focus of the webinar is to highlight portions on P-946 relevant to dam breach modeling and mapping in Florida as specified by the dam safety legislation.

Assumptions

One virtual webinar not to exceed 2 hours.

One best practices sheet summarizing portions on P-946 relevant to dam safety in Florida will be developed.

Deliverables:

The following deliverables will be developed:

1. One (1) webinar on Teams and the recording of the webinar.

2. A draft best practices summary not to exceed three (3) pages presenting pertinent information from P-946 to share with the user community in Florida.

3. A final best practices summary taking into consideration DEP comments

Performance Measures: Deliverables will be reviewed by DEP to confirm that they are complete, accurate, and timely.

Key Personnel

FDEP

Role Name Entity

Project Manager Tracy Woods FDEP Contract Manager Chelsey Sliger FDEP

AtkinsRéalis Role Name

Project Director Matthew Taylor Project Manager Diana Castro Sr. GIS Analyst II Jesse Morgan

Sr. Engineer Marie Hauser QC Manager Mike DePue

Project Deliverables, Costs, and Invoicing

Table 2 Project Deliverables and Invoicing Schedule

Deliverable Total Cost

Task 1: Methodology to fill data gaps and estimate PAR $ 5,167.31

Task 2: DSS-WISE Lite modeling to estimate FL PAR for select dams $29,261.51

Task 3: FDEP training on the use of DSS-WISE Lite $5,172.22

Task 4- - Training of FEMA P-946 (July 2013) for use on Florida regulated dams

$7,391.63

Total $46,992.67

The project deliverables are identified at the end of each task.

AtkinsRéalis will perform the services on a fixed price basis and will invoice each task upon FDEP acceptance of the task deliverables.

The fixed-price lump sum compensation for each deliverable is identified for each task in Table 2.

Invoicing will be accompanied by a brief description of the work effort completed, including deliverables achieved, and further documentation as specified in Contract BS136. Compensation will not be paid for a deliverable until the deliverable has been completed and accepted by the FDEP.

Project Schedule

The proposed scope of work will begin immediately upon notice to proceed (NTP) and be completed by March 11, 2025. The following anticipated durations are for the initial submission of each subtask and do not include review and revisions. The March completion date is the existing AtkinsRéalis contract expiration date. Once a NTP date is set a final completion date prior to the contract ending date will be established.

Task Anticipated duration Task 1: Methodology for PAR 30 calendar days from the NTP Task 2: DSS-WISE Lite models and PAR 60 calendar days from acceptance of Task 1 Task 3: DSS-WISE Lite training To be performed during task 2 Task 4: P-946 (July 2013) training To be performed within 14 days after tasks 1 and 2 are accepted Total Completion on or before March 11, 2025

The overall completion data assumes 14 calendar days for review by FDEP for Task 1 and 30 calendar days for Task 2.

AUTHORIZATION

This following individual is a representative for the Atkins North America, Inc. with the authority to enter a binding Contract with the FDEP:

Signature Date

Name and Title

Matthew Taylor, Vice President

Company Name

Atkins North America, Inc.

Matthew Taylor Typewriter 9/11/2024

Staff

HRS.

Cost by Pos & Act

Staff

HRS.

Cost by Pos & Act

Staff HRS. Cost by Pos & Act

Staff HRS. Cost by Pos & Act

Staff

HRS.

Cost by Pos & Act

Staff HR

ACTIVITY

SALARY COST

BY ACTIVITY

Task 1: Methodology 5 $1330.00 5 $1230.30 14 $2460.78 1 $146.23 $0.00 25 $5,167.31

Task 2: DSS-WISE Lite modeling 4 $1064.00 4 $984.24 31 $5448.87 84 $12283.32 84 $9481.08 207 $29,261.51

Task 3: FDEP training on the use of DSS-WISE Lite 2 $532.00 6 $1476.36 18 $3163.86 $0.00 $0.00 26 $5,172.22

Task 4: Training of FEMA P-946 (July 2013) 4 $1064.00 5 $1230.30 29 $5097.33 $0.00 $0.00 38 $7,391.63

Project Total: 15 $3,990.00 20 $4,921.20 92 $16,170.84 85 $12,429.55 84 $9,481.08 296 $46,992.67

Attachment B: Fee Breakdown Florida Department of Environmental Protection (FDEP)

TA 29: Dam Modeling

ACTIVITY DESCRIPTION

Sr. Eng IV Rate/Hr. $ 266.00

Sr. Eng III Rate/Hr. $ 246.06

Sr. Eng II Rate/Hr. $ 175.77

Sr. Eng I Rate/Hr. $ 146.23

Sr GIS Analyst I Rate/Hr. $ 112.87

TOTAL