Billingsley-CS130325 ■■■
HALFF North
on Bexasr 75081
Richardson,■■■ ich14)346-6200
Fax(214)739-0095
LETTER OF TRANSMITTAL
To: Kenneth M. Griffin, P.E., City of Coppell Date: 3/25/2013
From: Russell Erskine, P.E., CFM AVO: 29119
Email: rerskine @halff.com
WE ARE SENDING YOU ❑Attached ❑ Under separate cover via_ the following:
❑ Shop Drawings ❑ Prints ❑ Plans ❑ Drawings ❑ Specifications
❑ Copy of letter ❑ Report(s) ® CD/DVD ® Other:
VIA: ❑Hand Delivery ®US Postal Service ❑Courier Overnight Express
THESE ARE TRANSMITTED as checked below:
® For approval ❑ Approval as submitted ❑ Resubmit_copies for approval
❑ For your use ❑ Approved as noted ❑ Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected prints
❑ For review/comment ❑ Other:
ITEMS SENT:
• 1 —Letter
• 1 — Table 2 Comparison of Water Surface Elevations — 100-Year Discharge Duplicate Effective HEC-2 vs.
Duplicate Effective HEC-RAS
• 1 —Table 3, Comparison of Water Surface Elevations—100 Year Discharge
• 1 —MT-2 Form 2 Riverine Hydrology&Hydraulics Form
• 1 —Figure 2,Annotated FEMA FIRM
• 1 —Figure 3, Revised Floodplain
• 1 —Figure 5, FEMA Work Map
• 1 —CD—Updated Hydraulics Model Output
COMMENTS:
Halff Associates has reviewed the comments made by the Federal Emergency Management Agency(FEMA)
involving Case No. 13-06-1839P and provides responses in the form of this submittal.
•■■ HALFF 1201 Bowser■■■ Richardson,Texas 75081
(214)346-6200
Fax(214)739-0095
Please replace the items in the previous LOMR application with the hard copies of items included with this
submittal. In the near future, a separate submittal will be made to City personnel regarding fully developed
watershed conditions. �7
COPIES:
® File ❑ Owner ❑ Contractor ❑ Other: