FLOOD08366

• County: Douglas
• County: Arapahoe
• Community: Greenwood Village, Aurora
• Stream Name: Cherry Creek
• Basin: South Platte
• Title: Probable Maximum Precipitation Study for Cherry Creek Reservoir - Contacts and Meetings
• Date: 4/21/1972
• Prepared For: CWCB
• Prepared By: CWCB
• Floodplain - Doc Type: Project

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Scope of Work
Cherry Creek PMP Scoping Project
March 2000

The Consultant shall provide technical assistance to the Board for the preparation of a draft
"Scope of Work, The Scope of Work shall be entitled "A Technical Review and Site Specific
PMP study for Cherry Creek basin, Colorado," This draft Scope of Work will be the basis for the
performance of a technical review/analyses by a professional meteorological/engineering firm
(under separate contract),

The Consultant will search for existing published technical data; research the technical PMP
guidelines and study procedure; and draft a "Scope of Work" for the performance of a technical
review and modification of the NWS PMP study and presentation of the Colorado PMP Study
parameters,

The following products shall be presented to the CWCB for the Cherry Creek Basin draft "Scope
of Work," Specific tasks and products are:

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I,) Prepare a roster of recognized experts who can provide technical testimony for the
performance of the Cherry Creek technical review and modification and identifying their
area of involvement and contact information;

2,) Prepare a list of published reports and related data/documentation for the basin, and prepare a
brief synopsis of the content (limited to 15 documents);

3,) Prepare a list of the major tasks for the performance of a technical review and modification
of the PMP study, based on the National Weather Service's (NWS) July 13, 1995 Cherry
Creek Basin Site Specific Analysis;

4,) Collect information by a) discovering information on historical and regional flood events; b)
preparing an interview form; c) interviewing the people on attachments I & 2 (interviews
will be limited to 20);

5,) Acknowledge CSU's "Goals and Objectives of the State's Extreme Precipitation Study" and
provide a statement regarding it's application to the Cherry Creek basin;

6,) Document the federal study approach and define the specific tasks. assumptions, and data
used by the NWS in their July 13, 1995 study investigation;

7,) Identify, to the extent possible, the difficulties of performing a PMP study in a transition
zone between HMRs 52 & 55A, and the applicability to the basin's PMP investigation;

8,) Outline procedures for the development of acceptable PMP model study and its parameters,
. identify applicable orographic effects and study assumptions for a PMP model; and