14000000038 SOW

• Contract/PO #: 14000000038
• Contractor Name: Applied Weather Associates
• Contract Type: Grant
• Loan Projects - Doc Type: Contract Documents

• •
the-science and meteorological understanding related to PMP development. Emphasis will be
placed on procedures used in the most current studies accepted by state and federal regulators
(e.g.the Nebraska and Arizona statewide studies). For procedures that are consistent with the
most current PMP science and practice, an evaluation of the accuracy and reliability of such
procedures will be completed.
An explicit comparison of EPAT v4.2 rainfall depth, area and duration results for the Rio Grande
Dam drainage basin against respective results from NOAA Atlases 2 and 14, HMR 49, and HMR
55A will be completed. In addition, AWA will provide a preliminary assessment of PMP values
based on transpositioning of extreme storms in the AWA storm library that includes storm
analyses used in site-specific PMP studies in Colorado, as well as storms used in the Arizona
statewide PMP study.
Completion of the above tasks will provide detailed and comprehensive evaluations on the
performance and reliability of EPAT. Comparisons will be completed on the state-of-the-science
of the EPAT procedures and the implementation of those procedures in the GIS software. With
this information, AWA will make recommendations regarding any modifications and/or
replacement of EPAT procedures and/or software to improve the science and reliability of the
EPAT program to meet reliability standards for use by the DSB. AWA is uniquely qualified to
make these recommendations having completed more than 30 PMP studies across North
America and developed the PMP Evaluation Tool during the Arizona statewide PMP study.
Internal progress reviews and quality control evaluations will be completed periodically(at least
bi-weekly)by the project manager. Special attention will be paid to meeting the schedule for the
60%, 90%and final reports as well as assuring that each review task is comprehensively
completed as proposed in the Approach section of this proposal. By using AWA personnel who
have focused expertise and experience in each area(i.e. meteorological, storm analyses, and
GIS), efficient use of resources will be achieved.
Tasks
The following tasks as provided in the RFP Scope of Work will be performed in this review:
Task 1 Familiarization with EPAT
Review the EPAT v4.2 program and EPAT Phase I deliverables in order to thoroughly
understand how EPAT works and to understand known errors and concerns. Dr Tomlinson will
lead the meteorological review and Mr. Muhlestein will lead provide a top level review of the
GIS code review.
Task 2 Evaluate the EPAT Storm Library
Evaluate spatial and temporal characteristics of the storm data included in the EPAT Storm
Library for completeness, reliability and accuracy. Mr. Hultstrand will lead this review.
Task 3 Evaluate In-place Maximization and Transposition Procedures
The in-place maximization factors for each storm in the EPAT Storm Library will be evaluated.
In addition,the storm transposition procedure will be reviewed to access the reliability of
horizontal and vertical adjustments. Mr. Kappel will lead this effort.
Task 4 Evaluation of the EPAT Procedures