St Andrews Est-CS040625EVANS ENGINEERING
Mr. Keith Marvin, P.E.
Ei~gTri~{l~;' P~l~ii~-Works
City of Coppell
255 Parkway Blvd.
Coppell, Texas 75019
June 21, 2004
Re: Request for a Conditional Letter of Map Revision Based on Fill (CLOMR-F)
Old Denton Creek - St. Andrews Estates
Dear Sir:
The attached application for a CLOMR-F is submitted for consideration and approval. Normally,
such applications do not require review of hydraulic data by FEMNPBSJ.
In accordance with Ordinance 2001-952 an application to the City for a Floodplain Development
Permit ("FDP") is also herewith submitted. It is understood that the FDP is conditional on apprevai'
of the CLOMR-F. However, the CLOMR-F application requires approval of Mr. Griffin insofar as the
form states "all necessary.., local permits have been or in the case of a Conditional LOMR-F, will
be obtained."
Based on our previous report dated Apdl 29, 2004, and comments thereon submitted by Mr. Dan
Grant, P.E., Kimley-Hom, Inc, (ref. KHA No. 063124006) dated June 3, 2004, a revised report is
herewith enclosed. Responses to each of Mr. Grant's comments are also attached.
One important point is the higher water surface elevation in the effective and proposed models due
to the data from LOMR No. 03-06-844P dated October 1, 2003. For the purpose of this study the
water surface elevation at the confluence of Old Denton Creek and Denton Creek (Sta 21940+00 of
Denton Creek) was estimated to be 453.50 feet for the 100-year (1%) storm event.
Thank you for your attention to this matter.
Sincerely,
J. David Evans, P.E.
Enclosures: 1. Application for CLOMR-F, including the following:
MT-1 Forms 1 & 2 (Property Information Form & Elevation Form)
MT-1 Form 3 (Community Acknowledgement Form) - to be signed by Mr. Griffin
Legal description of area to be removed from the flood plain
2. Floodplain Development Permit application -- Hydraulic Study of Old Denton Creek
(Analysis from HEC-RAS with attachments)
3. Construction drawings: Plat, Grading Plan (Sheet C6) and Storm Sewer Plan
(Sheet C4) - rev. 6/2/04
cc: Mr. Peter Hennessey, P.E., Hennessey Engineering, Inc., Carrollton, Texas
Mr. Dan Grant, P.E., Kimley-Horn & Associates, Dallas, Texas
I
FEDERAL EMERGENCY MANAGEMENT AGENCY
PROPERTY INFORMATION FORM
PAPERWORK BURDEN DISCLOSURE NOTICE
Public reporting burden for this form is estimated to average 1.63 hours per response. The burden estimate includes the time for reviewing instructions,
searching existing data sources, gathering and maintaining the needed d~ta, and completing, reviewing, and submitting the fown. You are net required
to respond to this collection of information unless a valid OMB control number appears in the upper dght corner of this form. Send comments regarding
the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Federal Emergency
Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (3067q3147). Submission of the form is required to obtain
or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address.
This form may be completed by the property owner, property owner's agent, licensed land surveyor, or registered professional engineer to support a
request for a Letter of Map Amendment (LOMA), Conditional Letter of Map Amendment (CLOMA), Letter of Map Revision Based on Fill (LOMR-F), or
Conditional Letter of Map Revision Based on Fill (CLOMR-F) for existing or proposed, single or mufliple lots/structures. Please check the item below
that describes }/our request:
] LOMA .~, I~tter from FEMA ststing that an existing structure or parcel of isnd that has net been elevated by fill
(_r~atural grade) would not be inundated b,~ the base flood.
] CLOMA A letter from FEMA ststing that a proposed structure that is not to be elevated by fill (natural grade)
..... would not be inundated by the base flood if built as proposed.
] LOMR-F A letter from FEMA stating that an existing structure or parcel of land that has been elevated by fill
would not be inundated by the base flood.
A letter from FEMA stating that a parcel of land or proposed structure that will be elevated by fill
would not be inundated by the base flood if fill is placed on the parcel as proposed or the structure is
built as proposed.
Fill is defined as material from any source placed to raise the ground to or above the Base Flood Elevation (BFE). The common construction ixactice of
reproving unsuitable existing metefial (topsoil) and backfilling with select structural material is not considered the placement of fill if the practice does not
alter the existing (natural grade) elevation, which is at or above the BFE. Fill that is placed before the date of the first National Flood Insurance
Pro~jram (NFIP) map showing the area in a Special Flood Hazard Area (SFHA) is considered natural grade.
[] CLOMR-F
Has till been placed on your property?
[] Yes [] No
If yes, when was fill placed?
/
month/year
Will fill be placed on your properly?
~-~ Yes [] No
If yes, when will fill be placed?
I
month/year
1. Street Address of the Property (if request is for multiple structures, please attach additional sheet):
2. Legal deacdption of Property (Lot, Bicck, Subdivision) (if a street address cannot be provided):
Lots St. Andrews Estates
3. Are you requesting that the SFHA designation be removed from (check one):
] the entire isgally recorded property?
] a portion of land within the bounds of the property (a ce~ified metes and bounds descdption and map of the area to be removed,
certified by a licensed land surveyor or registered profess sea engineer, are required)?
] structures on the property? What are the dates of construction?
Is this request for a (check one):
] single structure
] single lot
] multiple structures (How many structures are involved in your request? List the number:
] multiple lots (How many lots are involved in your request? List the number: 6)
FEMA Form 81-87, SEP 02 Property Information Form MT-1 Form 1 Page 1 of 2
I FEDERAL EMERGENCY MANAGEMENT AGENCY
PROPERTY INFORMATION FORM
PAPERWORK BURDEN DISCLOSURE NOTICE
Public reporting burden for this form is estimated to average 1.63 hours per response. The burden estimate includes the time for reviewing it~lructions
searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are net required
to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding
the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Federal Emergency
Management Agency, 500 C Street, SW~ Washington DC 20472, Paperwork Reduction Project (3067q)147). Submission of the form is required to obtain
or retain benefits under the National Flood Insurance Program. Please do not send your complsted survey to the above address.
Tills form may be completed by the property owner, prope~y owner's agent, licensed land surveyor, or registered p~ofesetonst engineer to support a
request for a Letter of Map Amendment (LOMA), Conditional Letter of Map Amendment (CLOMA), Letter of Map Revision Based on Fill (LOMR-F), or
Conditionst Letter of Map Revision Based on Fill (CLOMR-F) for existing or proposed, single or multiple lots/structures, Please check the item below
that describes ;/our request:
] LOMA ,~ I~tter from FEMA stating that an existing structure or parcel of land that has not been elevated by fill
(natural grade) would not be inundated by the base flood.
] CLOMA A Istter from FEMA stating that a proposed stnJbture that is not to be elevated by fill (natural grade)
would not be inundated by the base flood if built asJ~roposed.
A letter from FEMA stating that an existing structure or parcel of land that has been elevated by fill
would not be inundated by the base flood.
A letter from FEMA stating that a parcel of land or Ixoposed structure that will be elevated by fill
[] CLOMR-F I would not be inundated by the base flood if fill is placed on the parcel as proposed or the
structure
is
baiit as proposed.
Fill is defined as material from any source placed to raise the ground to or above the Base Flood Elevation (BFE). The common constructfon practice of
removing unsuitable existing material (topsoil) and backfilling with select structural material is not considered the placement of fill if the practice does n(
alter the existing (natural grade) elevation, which is at or above the BFE. Fill that is placed before the date of the first National Flood Insurance
Program (NFIP) map showing Ihe area in a Special Flood Hazard Area (SFHA) is considered natural grade.
[] LOMR-F
Has fill been placed on your property?
]Yes [] No
If yes, when was fill placed?
/
month/year
Will fill be placed on your property?
[~Yes [] No
If yes, when will fill be placed?
/
month/year
1. Street Address of the Properb/(if request is for multiple structures, please attach additional sheet):
Legal description of Property (Lot, Black, Subdivision) (if a street address cannot be provided):
Lots St. Andrews Estates
Are you requesting that the SFHA designation be removed from (check one):
] the entire legally recorded property?
] a portion of land within the bounds of the property (a certified metes and bounds description and map of the area to be removed,
certified by a licensed land surveyor or registered professional engineer, are required)?
[] structures on the property? What are the dates of construction?
Is this request for a (check one):
[] single structure
] singte lot
] multiple structures (How many structures are involved in your request? List the number:
] multiple lots (How many lots are involved in your request? List the number: 6)
FEMA Form 81-87, SEP 02 Property Information Form MT-1 Form I Page 1 of 2
FEDERAL EMERGENCY MANAGEMENT AeENCY
PROPERTY INFORMATION FORM
PAPER~/ORK BURDEN DISCLOSURE NOTICE
Public reposing burden for this form is estimated to average 1.63 houm per response. The burden eaflmate includes the time faa reviewing instructions
searching exisUng data asumes, gathedag and maintaining the needed data, and completing, reviewing, and su~nltting the fo~n. You ara nc~ required
to reepond to this collechee of informaflen unless a valid OMB co.roi number appears in the upper ~ight comer of this form. Sand comments regarding
the acoura~y of the b~xden eatlmete and any sugge~iom~ fa' redu~eg this burden to: Information Collections Manegamant. Federal Emergency
Management Agency, 500 C Street, SW, Washington DC 20472, Papmwaak Reduction Projec~ (3067-0147). Submt~ldn of the faam le required to obtain
or retain benefits under the National Flood Insurance Prngrsm. I~ea~e do It~ eand your compl~ed survey t~ the above address.
~ form may be completed by the property owner, property ovme~a nge~t, licensed land anrveym', m' registaaed profeselonsl engineer to a~apo~t a
request for a Lstt~r of Map Amendment (LOMA), Condtitonol Letter of Map Ameratme~t (CLOMA), Letter of Map Rev~ton Based off RI (LOMR-F), aa
Cond~onel Letter of Map Revl~n Bm~ed on F#I (CLOMR-F) for ~ or proposed, Mngla or multlp4e Io~/stru~ura~. Please check the item below
that describes your request:
] LOMA .' V~ I~er from FEMA atatlng that an exleling etructure or parcel of lend that has not been elevated by fill
(natural grade) would not be inund~ed by the base flood.
[] CLOMA A lea. er from FEMA ~ that a J:~ atru~urs that is nof to be elevated by rdl (natural grade)
woeld nof be inundated by the haea flcod If built ee propoeed.
] LOMR-F A latter from FEMA ~i,~1 that an exi~thg structure or parcel of land that has been elevated by fill
would not be inundated by the base flood.
A letter from FEMA stating that a parcol of land or p~opoasd s~ucturs that will he elevated by fill
] CLOMR-F would not da inundated by the base ticod If fill is placed on the parcsi as proposed or the strcotura is
bell{ as Fopnsed.
F111 la defined as iiw4~lel from any eeaaee ~ to miea the ground to or above the Bese FEed Elevation (BFE). The common conel~ucflon practice of
removing unsuitable exi~ng material (top~ and bac~ with select ata~cturel mataaiat is n~ considered the placement of ~l If the practice does not
a#er the e~stlng (nstuml grade) elee'stlon, which le et or above the BFE. Fill th~ Is p{aced bof~e the d~e of the first Nstl~nst Flood Insurince
Pro.ram (NFII~ map showfllg the ama In a Speetsl Flexi Hazard Area (~FHA) Il c~dered natural grade.
Hea fill been placed on your property?
If ye~, when was fill placed?
/
month/year
' WIll fill be placed on your propmty?
]Yes [~ No
If yes, when will fill be placed?
7 / ~OO~
mon{Wyeer
1. ~ Address of the Pmparty (if request is faa multiple structures, plasea altech addltJeeel sheet):
Legal descatption of Property (Lot, Block, Subdivision) (If a street address cannot be provided):
Lots St. Andrews Estates
Are you requesting that the SFHA dnsignstion be removed from (check( one):
[] the en~Ye legally recorded property?
[] abortion of land within the bounda ol tbe property (a ce~fled metes and bound~ dasurll~ldn and map of the arsa to be removed,
certified by a licensed land surveyor or registered professionol engineer, are required)?
[] struc~urea on the property? What are the dates of coeetrucflun?
] stngld structure
] single lot
[] muitlple structures (How many structures are involved in your request? List the number:
[] multiple lots (How many lots ars involved in your request? Ual the number: 6)
FEMA Form fi1-~7, SEP 02 Properly Information Form MT-1 Form 1 Page 1 of 2
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