HomeMy WebLinkAbout14-153FOR OFFICE USE ONLY
CASE NO.: 1'--1 -J 730
CITY Of' C OI.l.E GE STATION
Home o/Texas A&M University•
DATE SUBMITTED: O\o l\:J ltY
TIME: g ·. L.\ 5
STAFF: --+fJ~--------
FINAL PLAT APPLICATION
(Check one) D Minor
($700)
D Amending
($700)
~Final
($932)
D Vacating
($932)
0Replat
($932)
Is this plat in the ET J? [8] Yes D No Is this plat Commercial D or Residential [g]
MINIMUM SUBMITTAL REQUIREMENTS:
$700-$932 Final Plat Application Fee (see above).
$233 Waiver Request to Subdivision Regulations Fee (if applicable).
$600 (minimum) Development Permit Application I Public Infrastructure Review and Inspection Fee. Fee is
1 % of acceptable Engineer's Estimate for public infrastructure, $600 minimum (if fee is > $600, the balance is
due prior to the issuance of any plans or development permit).
Application completed in full. This application form provided by the City of College Station must be used and
may not be adjusted or altered. Please attach pages if additional information is provided.
Six (6) folded copies of plat. (A signed mylar original must be submitted after approval.)
Two (2) copies of the grading, drainage, and erosion control plans with supporting drainage report.
Two (2) copies of the Public infrastructure plans and supporting documents (if applicable).
Copy of original deed restrictions/covenants for replats (if applicable).
~[8]
Title report for property current within ninety (90) days or accompanied by a Nothing Further Certificate
current within ninety (90) days. The report must include applicable information such as ownership, liens,
encumbrances, etc.
Paid tax certificates from City of College Station, Brazos County and College Station l.S.D.
vtg] The attached Final Plat checklist with all items checked off or a brief explanation as to why they are not.
NOTE: A mylar of the approved preliminary plan must be on file before a final plat application will be considered
complete. If the mylar is submitted with the final plat application, it shall be considered a submittal for the
preliminary plan project and processed and reviewed as such. Until the mylar has been confirmed by staff
to be correct, the final plat application will be considered incomplete.
Date of Optional Preapplication or Stormwater Management Conference _N_YA _______________ _
NAME OF PROJECT Duck Haven Phase 6 -----------------------------------
ADDRESS South of Retriever Run
SPECIFIED LOCATION OF PROPOSED PLAT:
I south of Retriever Run
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary contact for the project):
Name Travis Martinek E-mail travis@clarkewyndham.com
Street Address 3608 East 29th Street, Suite 100
City Bryan State Texas Zip Code 77802 ------
Phone Number (979) 846-4384 Fax Number (979) 846-1461 -----------------
Revised 4/14 Page 1of9
-PROPERTY OWNER'S INFORMA rlON (All owners must be identified. Please attach an additional sheet for multiple
owners):
Name Duck Haven, Ltd. E-mail travis@clarkewyndham.com
Street Address 3608 East 29th Street, Suite 100
City Bryan state Texas Zip Code 77802 -------
Phone Number (979) 846-4384 Fax Number (979) 846-1461 -----------------
ARCHITECT OR ENGINEER'S INFORMATION:
Name McClure & Browne Engineering/Surveying, Inc. E-mail jeffr@mcclurebrowne.com
Street Address 1008 Woodcreek Drive, Suite 103
City College Station State Texas Zip Code 77845 -------
Phone Number (979) 693-3838 Fax Number (979) 693-2554 -----------------
Do any deed restrictions or covenants exist for this property? [g] Yes D No
Is there a temporary blanket easement on this property? If so, please provide the Volume __ N_Y-_:Ll __ and Page No . _N_YA_
Total Acreage _1_0._0_2_1 ______ _ Total No. of Lots 3 ------R-0-W Acreage _o_.4_9_4 ____ _
Existing Use _v_a_ca_n_t ___________ _ Proposed Use Single-Family Residential
Number of Lots By Zoning District NIA NIA NIA NIA NIA I NIA
Average Acreage Of Each Residential Lot By Zoning District:
NIA NIA NIA NIA NIA NIA NIA NIA
Floodplain Acreage 0. 000
-----------------------------------~
Is there Special Flood Hazard Area (Zone A or Zone AE on FEMA FIRM panels) on the property? I Yes fX No
This information is necessary to help staff identify the appropriate standards to review the application and will be used to
help determine if the application qualifies for vesting to a previous ordinance. Notwithstanding any assertion made,
vesting is limited to that which is provided in Chapter 245 of the Texas Local Government Code or other applicable law.
Is this application a continuation of a project that has received prior City platting approval(s) and you are requesting the
application be reviewed under previous ordinance as applicable?
fX Yes
I No
If yes, provide information regarding the first approved application and any related subsequent applications (provide
additional sheets if necessary):
Project Name: Duck Haven
City Project Number (if known): Unknown
Date I Timeframe when submitted: 2000
Revised 4/14 Page 2 of 9
A statement addressing any differences between the Final Plat and Preliminary Plan (if applicable):
NIA
Requested waiver to subdivision requlations and reason for same (if applicable):
NIA
Regarding the waiver request, explain how:
1. There are special circumstances or conditions affecting the land involved such that strict application of the
LAsubdivision regulations will deprive the applicant of the reasonable use of his land.
2. The waiver is necessary for the preservation and enjoyment of a substantial property right of the applicant.
'NIA
3. The granting of the waiver will not be detrimental to the public health, safety, or welfare, or injurious to other
property in the area , or to the City in administering subdivision regulations.
NIA
4. The granting of the waiver will not have the effect of preventing the orderly subdivision of other land in the area in
accordance with the provisions of the Unified Development Ordinance.
'NIA
Fee in lieu of sidewalk construction is being requested because of the following condition (if applicable):
1. I An alternative pedestrian way or multi-use path has been or will be provided outside the right-of-way;
2. I The presence of unique or unusual topographic, vegetative, or other natural conditions exist so that strict
adherence to the sidewalk requirements of the UDO is not physically feasible or is not in keeping with the
purposes and goals of the UDO or the City's comprehensive Plan;
3. I A capital improvement project is imminent that will include construction of the required sidewalk. Imminent shall
mean the project is funded or projected to commence within twelve (12) months;
4. I Existing streets constructed to rural section that are not identified on the Thoroughfare Plan with an estate I
rural context;
5. I When a sidewalk is required along a street where a multi-use path is shown on the Bicycle, Pedestrian, and
Greenways Master Plan;
Revised 4/14 Page 3 of 9
6. r The proposed development is within an older residential subdivision meeting the criteria in Platting and
Replatting within Older Residential Subdivisions Section of the UDO; or
7. r The proposed development contains frontage on a Freeway I Expressway as designated by Map 6.6,
Thoroughfare Plan -Functional Classification, in the City's Comprehensive Plan .
Detailed explanation of condition identified above:
N/A
NOTE: A waiver to the sidewalk requirements and fee in lieu of sidewalk construction shall not be considered at the
same time by the Planning & Zoning Commission.
Total Linear Footage of
Proposed Public:
___ Streets
Sidewalks ---
---Sanitary Sewer Lines
Water Lines ---
Channels
Storm Sewers ---
Bike Lanes I Paths
Parkland Dedication due prior to filing the Final Plat:
ACREAGE:
___ No. of acres to be dedicated + $ ____ development fee
___ No. of acres in floodplain
No. of acres in detention ---
---No. of acres in greenways
OR
FEE IN LIEU OF LAND:
__ No . of SF Dwelling Units X $ = $ ---------
(date) Approved by Parks & Recreation Advisory Board ----
NOTE: DIGIT AL COPY OF PLAT MUST BE SUBMITTED PRIOR TO FILING.
The applicant has prepared this application and certifies that the facts stated herein and exhibits attached hereto are
true, correct, and complete. IF THIS APPL/CATION IS FILED BY ANYONE OTHER THAN THE OWNER OF THE
PROPERTY, this application must be accompanied by a power of attorney statement from the owner. If there is more
than one owner, all owners must sign the application or the power of attorney. If the owner is a company, the application
must be accompanied by proof of authority for the company's representative to sign the application on its behalf LIEN
HOLDERS identified in the title report are also considered owners and the appropriate signatures must be provided as
described above.
Signature anW-Date
Revised 4/14 Page 4 of 9
Existing
[g]
[g]
[g]
FINAL PLAT MINIMUM REQUIREMENTS
(ALL CITY ORDINANCES MUST BE MET)
INCLUDING BUT NOT LIMITED TO THE FOLLOWING:
(Requirements based on field survey and marked by monuments and markers.)
[g] Drawn on 24" x 36" sheet to scale of 100' per inch.
[g] Vicinity map which includes enough of surrounding area to show general location of subject property in
relationship to College Station and its City Limits. No scale required but include north arrow.
[g] Title Block with the following information:
[g] Name and address of subdivider, recorded owner, planner, engineer and surveyor.
[g] Proposed name of subdivision. (Subdivision name & street names will be approved through Brazos
County 911.)
[g] Date of preparation.
[g] Engineer's scale in feet.
[g] Total area intended to be developed.
[g] North Arrow.
[g] Subdivision boundary indicated by heavy lines.
[g] If more than 1 sheet, an inde_x sheet showing entire subdivision at a scale of 500 feet per inch or
larger.
[g] All applicable certifications based on the type of final plat.
[g] Ownership and Dedication
[g] Surveyor and/or Engineer
[g] City Engineer (and City Planner, if a minor plat)
[g] Planning and Zoning Commission (delete if minor plat)
[g] Brazos County Clerk
[g] Brazos County Commissioners Court Approval (ET J Plats only)
(g] If submitting a replat where there are existing improvements, submit a survey of the subject property
showing the improvements to ensure that no encroachments will be created.
(g] If using private septic systems, add a general note on the plat that no private sewage facility may be
installed on any lot in this subdivision without the issuance of a license by the Brazos County
Health Unit under the provisions of the private facility regulations adopted by the Commissioner's
Court of Brazos County, pursuant to the provisions of Section 21 .084 of the Texas Water Code.
[g] Location of the 100-Year Floodplain and floodway , if applicable, according to the most recent available
data.
[g] Lot corner markers and survey monuments (by symbol) and clearly tied to basic survey data.
[g] Matches the approved preliminary plan or qualifies as minor amendments (UDO Section 3.3.E.2).
[g] The location and description with accurate dimensions, bearings or deflection angles and radii, area , center
angle, degree of curvature, tangent distance and length of all curves for all of the
following: (Show existing items that are intersecting or contiguous with the boundary of or forming a
boundary with the subdivision, as well as, those within the subdivision).
Proposed
[g]
[g]
[g]
Streets. Continuous or end in a cul-de-sac, stubbed out streets must end into a temp
turn around unless they are shorter than 100 feet.
Public and private R.O.W. locations and widths. (All existing and proposed R.O .W.'s
sufficient to meet Thoroughfare Plan.)
Street offsets and/or intersection angles meet ordinance.
Revised 4/14 Page 8 of 9
'#
Existing
[8]
[8]
[8]
~
Proposed
~
~
~
~
Alleys.
Easements.
A number or letter to identify each lot or site and each block (numbered sequentially).
Parkland dedication/greenbelt area/park linkages. All proposed dedications must be
reviewed by the Parks and Recreation Advisory Board and documentation of their
recommendation provided prior to being scheduled for P&Z Commission consideration.
~ Construction documents for all public infrastructure drawn on 24" x 36" sheets and properly
sealed by a Licensed Texas Professional Engineer that include the following:
~ Street, alley and sidewalk plans, profiles and sections. One sheet must show the overall
street, alley and/or sidewalk layout of the subdivision. (may be combined with other
utilities).
[8] Sewer Design Report.
[8] Sanitary sewer plan and profile showing depth and grades. One sheet must show the
overall sewer layout of the subdivision. (Utilities of sufficient size/depth to meet the utility
master plan and any future growth areas.)
[8] Water Design Report and/or Fire Flow Report.
[8] Water line plan showing fire hydrants, valves, etc. with plan and profile lines showing
depth and grades. One sheet must show the overall water layout of the subdivision.
(Utilities of sufficient size/depth to meet the utility master plan and any future growth
areas.)
[8) Storm drainage system plan with contours, street profile, inlets, storm sewer and
drainage channels, with profiles and sections. Drainage and runoff areas, and runoff
based on 5, 10, 25, 50 and 100 year rain intensity. Detailed drainage structure design,
channel lining design & detention if used. One sheet must show the overall drainage
layout of the subdivision.
[8] Detailed cost estimates for all public infrastructure listed above sealed by Texas P.E.
[8] Letter of completion for public infrastructure or guarantee I surety in accordance with UDO
Section 8.6.
[8] Drainage Report with a Technical Design Summary.
[8] Erosion Control Plan (must be included in construction plans).
~ All off-site easements necessary for infrastructure construction must be shown on the final plat with a
v·olume and page listed to indicate where the separate instrument easements were filed .
Separate instrument easements must be provided in recordable form to the City prior to being scheduled
for P&Z Commission consideration.
~ Are there impact fees associated with this development? D Yes [8] No
Impact fees must be paid prior to building permit.
[8] Will any construction occur in TxDOT rights-of-way? D Yes [8] No
If yes, TxDOT permit must be submitted along with the construction documents.
NOTE: 1. We will be requesting the corrected Final Plat to be submitted in digital form if available prior to filing
the plat at the Courthouse.
2. If the construction area is greater than 5 acres, EPA Notice of Intent (NOi) must be submitted prior to
issuance of a development permit.
Print Form
Revised 4/14 Page 9 of 9
CLARKE 8r WYNDHAM
REAL EST ATE INVESTMENT SERVICES
TRAVIS MARTINEK
3608 East 29th Street, Suite 100
Bryan, Texas 77802
Office: (979) 846-4384 Fax: (979) 846-1461 Cell: (979) 229-9877
TRANSMITTAL SHEET
TO: DATE:
6/17/2014
COMPANY: TOTAL NO. OF PAGES INCLUDING COVER:
CS Ping & Dvlpmt Serv See below
FAX NUMBER: PHONE NUMBER:
RE:
Duck Haven -Phase 6 Final Plat
0 URGENT 0 FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE
NOTES/COMMENTS:
Attached are the following documents:
• Application and Checklist
• Signature authority documents
• Title report
• Tax certificate
• 6 -24"x36" copies of the Final Plat
• 2 -24"x36" copies of the construction plans
Let me know if you need anything further.
Thanks,
Travis
• !l R-LL C
W:qt ~tate cf W:txns
~tcrthttl! nf ~hde
C RTIFIC ATl OF U GAN I Z I
OF
DUCK HAV"N HANAGEME Nf, LLC
F ILI NG NUM ER 0709211 3
TH C JN[)[ ·s IGf\ o, AS Sl:dff AR Y OF S TATE OF rw: STA TE OF TEXAS ,
11 :.; ;~lH Ct. .T JFIC:S THA rll t ATT CH -0 6.1\T ICLE OF 0 GA Nl b \TI ON FO R THE
A ~3 VE 1-l MI D C Cl IH JY VF 8 t: • k EC ri 'U> It TH I S FF I CE AN U HAVE BE EN
f n , o ·o r.uNFO "' r u LAw .
/,Cr, 0 0 JN G LY , I : UM DER I G E t I\ S S f: C,. ET ARY fJ F ST AT E , AND BY VI RT UE
GF TH. AUTHn · 1· Y V S LD I THE ~ C c TAt\Y BY LAW , HEf<EBY ISSU S THIS
er 1 T I F IC .A.TE -OR GAf\I ZI TI l'l
ISSU 1'-tct: F THI C .T Fl CATE UF 0 GAN IZ TIO! DOES NOT AU THORIZ E
Hfr USE F /!. 0~1 P I· Y N 1 I N THI S ST Alt H VIO LATION UF lH RI GHT S OF
AN r 1-1 r: "N I Y UNfl ·'R THf . Ot: AL. T AD EM t< ACT OF 1 9 46 , THE TEXAS TRADEMARK
LA\-1 , T r A SUIH: BU . I Nt l fl PRO S l ONA L NAME ACT OR TH E COMMON LAW.
D T D JU N 28 , 2001
t.F ~C .J.V JU I zo, 2001
Henry Cuellar, Secretary of State
ARTICLES OF ORGANIZATION
OF
DUCK HAVEN MANAGEMENT, LLC
June 26, 2001
ARTICLES OF ORGANIZATION
OF
DUCK HAVEN MANAGEMENT, LLC
FILED
f n the Office of the
Secretary of State of Texas
JUN 28 2001
Corporations Section
I, the undersigned natural person of the age of eighteen years or more, acting as the
organizer of a limited liability company (the "Company") under the Texas Limited Liability
Company Act, do hereby adopt the following Articles of Organization for such Company:
ARTICLE I
The name of the Company is DUCK HAVEN MANAGEMENT, LLC.
ARTICLE II
The period of duration of the Company is perpetual.
ARTICLE Ill
The purpose for which the Company is organized is to transact any or all lawful business
for which limited liability companies may be organized under the Texas Limited Liability
Company Act.
ARTICLE IV
The address of the Company's principal place of business in Texas is as follows:
3608 East 291h Street, Suite 100
Bryan, TX 77802
ARTICLE V
The name and address of the Company's initial registered agent and registered office in
Texas are as follows:
Paul J. Clarke
3608 East 291h Street, Suite 100
Bryan, TX 77802
ARTICLE VI
The Company is to be managed by one or more managers. The name and address of
the person who is to serve as manager until the first annual meeting of the members or until his
successors are elected and qualified are as follows:
Articles of Organization
Paul J . Clarke
3608 East 29th Street, Suite 100
Bryan, TX 77802
P age2
ARTICLE VII
The name and address of the organizer of the Company are as follows:
Amy L. Clough
Charles A. Ellison, P.C.
2501 Ashford Dr., Suite 100
College Station, Brazos County, Texas 77840
ARTICLE VIII
No manager of the Company shall be liable to the Company or its members for
monetary damages for an act or omission in the manager's capacity as a manager, except for
liability of a manager for (i) a breach of such manager's duty of loyalty to the Company or its
members, (ii) an act or omission not in good faith that constitutes a breach of duty of such
manager to the Company, (iii) an act or omission of such manager which involves intentional
misconduct or a knowing violation of the law, (iv) a transaction from which such manager
received an improper benefit, whether or not the benefit resulted from an action taken within the
scope of the manager's position, or (iv) an act or omission for which the liability of such
manager is expressly provided for by an applicable statute. If the Texas Limited Liability
Company Act, the Texas Business Corporation Act, the Texas Miscellaneous Corporation Laws
Act, or other applicable law is amended to authorize action further eliminating or limiting the
liability of managers, then the liability of a manager of the Company shall be eliminated or
limited to the fullest extent permitted by the Texas Limited Liability Company Act, the Texas
Business Corporation Act, the Texas Miscellaneous Corporation Laws Act or other applicable
law, as so amended. Any repeal or modification of the foregoing provisions by the members
shall not adversely affect any right or protection of a manager existing at the time of such repeal
or modification.
IN WITNESS WHEREOF, the undersigned organizer has signed these Articles of
Organization on the 26th day of June, 2001.
Articles of Organization Page3
(
-f,{·-LP
Wqt ~tate nf Wtxas
~ttrtbtrtr of ~bde
J U N '-t'8 , l 0 O l
L1 ~Y ER ' I D C\tRV IC -, I NC •
. P. J . BOX 8118
AUST N ,T X
r.::
OllCK PAV ::N, L T •
l I G tU M tR CO 3282-10
T HA .. l::i:-OU' PU:A U t T PP RO VE A ID PLA C
C .PT I F CAT( UF LI Ml TtO PAR ERSHI P.
RE CORD YOUR
TH : A PR PKT T~ VI E~CF IS ATT CH FR YO UR FIL ES ANO TH
. I<~I NA L i~5 B -F l l . l N THJ OF F I L •
p /\ Y ~ E I . ( O T II . r-I I'' G F E . I S AC I( 11 L f D G F 0 B Y T H I L ET T E: R •
IF 1.,ic; CAN t:l f F F UklHf ' )F VI CE TA Y T I E t ·PL EASE LET US KNOW .
Henry Cuellar, Secretary of State
•
(
FILED
In the Office of the
Secretary of State of Texas
CERTIFICATE OF LIMITED PARTNERSHIP JUN 28 2001
The undersigned General Partner, who desires to form a limitftf~grft{Q~ption
certifies that:
1. The name of the partnership is DUCK HAVEN, LTD.
2. The address of the partnership's registered office is 3608 East 29th Street,
Suite 100, Bryan, TX 77802.
3. The name of the partnership's registered agent for service of process is
PAUL J. CLARKE.
4. The address of the agent is 3608 East 29th Street, Suite 100, Bryan, TX
77802.
5. The address of the principal office where records that are required to be
kept will be kept or made available is 3608 East 29th Street, Suite 100,
Bryan, TX 77802.
6. The name and address of the business or residence of each general
partner are as follows:
Name
Duck Haven Management, LLC
Address
3608 East 29th Street, Suite 100
Bryan, TX 77802
7. This certificate of limited partnership shall be effective on the date of filing
with the Secretary of State.
I affirm, under penalty of perjury, that this certificate is executed on June 26th,
2001 , and, to the best of my knowledge and belief, the facts stated in this certificate are
true.
General Partner:
DUCK HAVEN MANAGEMENT, LLC
a Texas limited liability company
By: Pau~r
CLARKE & WYNDHAM
REAL ESTATE INVESTMENT SERVICES
TRAVIS MARTINEK
3608 East 29th Street, Suite 100
Bryan, Texas 77802
Office: (979) 846-4384 hx: (979) 846-1461 Cell: (979) 229-9877
TRANSMITTAL SHEET
TO: DATE:
Deborah Grace 12/23/2014
COMPANY: TOTAL NO. OF PAGES INCLUDING COVER:
CS Ping & Dvlpmt Serv See below
FAX NUMBER: PHONE NUMBER:
RE :
Duck Haven -Phase 6 Final Plat
0 URGENT 0 FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE
NOTES/COMMENTS:
Deborah,
Attached are the following:
• Phase 6 Final Plat mylar
• Copy of email from Wellborn Water stating acceptance of water utilities
When convenient, email me a copy of the plat scan.
Thanks!
Travis
• Travis Martinek
From:
Sent:
To:
Stephen Cast [wsud.sc@verizon.net]
Monday, December 22, 2014 4:03 PM
Travis Martinek
Subject: RE: Duck Haven -Phase 6 Water Test
Travis,
Wellborn Special Utility District inspected and accepted the water lines in Phase 6 of the Duck Haven development.
Stephen Cast
Wellborn Special Utility District
From: Travis Martinek [mailto:tmartinek@clarkewyndham.com]
Sent: Monday, December 22, 2014 10:41 AM
To: Stephen Cast
Subject: Duck Haven -Phase 6 Water Test
Stephen,
Here's the water test report for Duck Haven Phase 6. All I need is an email from you stating your acceptance of the water
infrastructure. I also dropped off the as-built construction drawings on Friday.
Thanks!
Travis Martmek
Clarke & Wyndham, Inc.
From: Randy Coker [mailto:randycoker@texcon.net]
Sent: Monday, December 22, 2014 10:27 AM
To: Travis Martinek
Subject: FW: Water Results
Travis,
Here is the info you requested on the water system from the Brazos County Health Department. Let me know
if I can assist you any further.
Thank you,
Randy
From: Amanda G. Garner <AGarner@brazoscountytx.gov>
Sent: Monday, December 22, 2014 10:17 AM
To: Randy Coker
Subject: Water Results
Hi Randy,
The water results you requested are attached!
1
1 Amanda Garner
Laboratory Services Director
Brazos County Health Department
201 North Texas Avenue
Bryan, TX 77803
Main 979.361.4440
Fax 979 .823.2275
Email agarner@ brazoscountytx.gov
2
6
Public Wal.t!rSystom ZJoJ ber-ri S;t'e:c.1C:...I (A...J-,./H'f ,(} ,·.s -f. "" ..... : .
ft'na.~mo T~tedBy: at~1pt7·
3.(o •c Rc!porlod
By: 7 7 Zip:
F.ufl: RQport l\pprov11I
Slgn.atunimu.:
ApprovinQ 0 SJ
T.cllnlCQJ
0 l . 5
0 0
0 D D
0 0 0 0
0 0 D 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
I) ~Too !lid. Mi!~il m hi~cJ wl1hi1 3U hauis <II
"!1 ~!o~vy Sllllfu1W~y Plna11 U) 0 0101:
Brazos County Hea~h Department
201 North Texas Avenue
Bryan, TX 778G3
Phone: 979-361-5738
Fax: 979-923-2275
48006
RecC?i'rod:. q · Zlt ·I
''-\, ! ./ _,. --... -·~ ·:-::;=:. :~, ~Tff.q 1
T1Q:4704299
To:I ,_u:ll r:oocC .:S r..p.~ ol
ra:uc --..er.nm..
Z $'S
.~ Oa~ITlmo q . 'l-lt . I '1 so~ Tei;ted: I)
D:iatolTime
710 ().'~ Reported:
L-~
riP
rrnent Ab!~! rreent
D 0
0 0 0
0 ·o 0 D
0 D 0 D
D 0 0 0
D 0 D 0
D 0 0 0
D 0 D 0
0 D 0 0
D D 0 D
0) Form l11<x.n11Jfell> I 03\& Ulsa1ipmcy \Emn Coii;ltod)
•
'. ' ...... ~:. .. .: . ;.
..~·~
.;
\
'·
'•
CITY OF COLIEGE STATIO~---------------..... Home of Texas A&M University• --------
MEMORANDUM
DATE: 08/12/14
TO: Travis Martinek, via ; travis@clarkewyndham .com
FROM: MARK BOMBEK
SUBJECT: DUCK HAVEN PH 6 (FP) -Final Plat
Staff reviewed the above-mentioned final plat as requested. The following page is a list of staff
review comments detailing items that need to be addressed. Please address the comments and
submit the following information for further staff review and to be scheduled for a future Planning
& Zoning Commission meeting:
One ( 1) 24"x36" copy of the revised final plat;
Thirteen (13) 11 "x17" copies of the revised final plat;
One (1) copy of the digital file of the final plat on diskette or e-mail to
pdsdigitalsubmittal@cstx.gov.
Upon receipt of the required documents for the Planning & Zoning meeting, your project will be
considered formally filed with the City of College Station . Please note that this application will
expire in 90 days from the date of this memo, if the applicant has not provided written response
comments and revised documents to the Administrator that seek to address the staff review
comments contained herein. If all comments have not been addressed your project will not be
scheduled for a Planning & Zoning Commission meeting . Your project may be placed on a
future agenda once all the revisions have been made and the appropriate fees paid. Once your
item has been scheduled for the P&Z meeting, the agenda and staff report can be accessed at
the following web site on Monday the week of the P&Z meeting.
http://www.cstx.gov/pz
Please note that a Mylar original of the revised final plat will be required after P&Z approval and
prior to the filing of the plat. If you have any questions or need additional information , please call
me at 979.764.3570.
Attachments: Staff review comments
PC: McClure & Browne Engineering/Surveying, via ; jeffr@mcclurebrowne.com
P&DS Project No . 14-00900153
Planning & Development Services
P.O. BOX9960 • 1101 TEXAS AVENUE · COLLEGESl:·\TION ·TEXAS · 77842
"fEL. 979.764.3570 ·FAX. 979.764.3496
cstx.gov/devservices
STAFF REVIEW COMMENTS NO. 2
Project: DUCK HAVEN PH 6 (FP) -14-00900153
PLANNING COMMENTS NO. 2
1. No Comments
Reviewed by: MARK BOMBEK Date: 07/30/14
ENGINEERING COMMENTS NO. 2
1. Please revise the drainage report. Portions of the Technical Design Summary do not
appear to reference this project. Please provide calculations showing that the drainage is
contained within ditches and drainage easements.
Reviewed by: Danielle Singh Date: 8/11 /14
Home of Texas A&M University
DATE:
TO:
FROM:
SUBJECT:
June 30, 2014
C ITY OF COLLEGE STATION
Home of Texas A&M University•
MEMORANDUM
Travis Martinek; via email: travis@clarkewyndham.com /
Morgan Hester, Staff Planner
DUCK HAVEN PH 6 (FP) -Final Plat
Staff reviewed the above-mentioned final plat as requested. The following page is a list of staff
review comments detailing items that need to be addressed. If all comments have been
addressed and the following information submitted, your project will be placed on the next
available Planning and Zoning Commission meeting held in the City Hall Council Chambers,
1101 Texas Avenue.
One (1) 24"x36" copy of the revised final plat;
Thirteen (13) 11 "x17" copies of the revised final plat;
One (1) copy of the digital file of the final plat on diskette or e-mail to
pdsdigitalsubmittal@cstx.gov; and
The Mylar original of the revised final plat with the owner and County Judge's
signatures (will be required after the County's approval).
Upon receipt of the required documents for the Planning & Zoning meeting, your project will be
considered formally filed with the City of College Station. Please note that this application will
expire in 90 days from the date of this memo, if the applicant has not provided written response
comments and revised documents to the Administrator that seek to address the staff review
comments contained herein. If all comments have not been addressed, your project will not be
scheduled for the Planning & Zoning Commission meeting. Your project may be placed on a
future agenda once all the revisions have been made and the appropriate fees paid . Once your
item has been scheduled for the P&Z meeting, the agenda and staff report can be accessed at
the following web site on Monday the week of the P&Z meeting.
http://www.cstx.gov/home/index.asp?page=2481
Please note that a Mylar original of the revised final plat will be required after P&Z approval and
prior to the filing of the plat. If you have any questions or need additional information, please call
me at 979.764.3570.
Attachments: Staff Review Comments
cc: Gary Arnold , Brazos County Planning & Traffic, via fax 775.0453 /
Case file #14-00900153
Pla11ni11g & De11elopme11t Services
P.O. nox 9%0 . l l Ol 1EXAS AVENUE • COLL.EC£ 5TXllON . TEXAS • 77842
TEL. 979 764.3570 ·FAX. 97'1.764.3496
. Id 1 riSSi!' cstv qosr/doy1cor,,;,,..A.(:._
PLANNING
STAFF REVIEW COMMENTS NO. 1
Project: DUCK HAVEN PH 6 (FP) -14-00900153
1. Please include the number of proposed lots in the title block.
2. Please revise or remove the incorrect information in General Notes #11.
3. The Vicinity Map refers to Duck Haven Phase 4. Please revise .
4. Please remove the Certificate of Ownership and Dedication that does not provide any
information as this has already been provided with Paul Clarke's information in the first
certificate on the plat.
5. Unless it was requested to be provided on the plat for financial reasons, please remove the
Certificate of Mortgagee.
6. Please add the Certificate of Planning & Zoning Commission.
7. Please note that you , the applicant, are responsible for scheduling the plat for consideration
by the County Commissioner's Court and for getting the County Judge's signature on the
Mylar after they approve the plat.
8. Please note that any changes made to the plans, which have not been requested by the
City of College Station, must be explained in your next transmittal letter and "bubbled" on
your plans. Any additional changes on these plans that the City has not been made aware of
will C<?nstitute a completely new review.
Reviewed by: Morgan Hester Date: June 20, 2014
ENGINEERING COMMENTS NO. 1
1. Please show lot corner markers for each lot.
2. Please provide an engineer's estimate, drainage report, and water report.
3. Please make sure to coordinate the construction of Canvasback Cove between Duck Haven
and Saddle Creek. The ROW appears to be offset by approximately 3". Construction is
currently underway in Saddle Creek. Please note on the plans for the contractors to
coordinate. Have the two designs been coordinated?
4. Please show the connection to the proposed Canvasback Cove through Saddle Creek
Phase 11. The design cannot stop a few feet short of the property line with end of road
signs. The projects will need to connect. Temporary barricades would be more appropriate
for this situation.
5. Please show the water line connection to Saddle Creek Phase 11 . Please coordinate this
with the adjacent project.
6. Based on the alignment of culvert one, it appears the private drainage easement may need
to be extended.
7. Please update the NOi notes to correspond to this project.
8. Please update the rip rap detail to reflect the double culvert proposed.
9. Please show a water service for Lot 1.
10. Please add a gate valve at the beginning of the waterline.
11. Please show the nearest fire hydrant.
12. Please add all necessary standard details.
Reviewed by: Danielle Singh Date: June 27 , 2014
NOTE: Any changes made to the plans, that have not been requested by the City of College Station, must be explained in your next
transmittal letter and "bubbled" on your plans. Any additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Pao-c 2 of 3 ; l ! ..t'i b
- . • . '-~-1.. ...
ADDRESSING
1. The proposed street names have been preliminarily approved and will be re-verified prior to
filing any plats to ensure no duplicate street names are being created within Brazos County.
Reviewed by: Robin Krause, Permit Technician Date: June 24, 2014
NOTE: Any changes made to the plans, that have not been reguested by the City of College Station, must be explained in your next
transmittal letter and "bubbled" on your plans. t\ny additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Page 3 of 3
;; ·~ '-··
CITY OF Cou1~GE STATION
Home o/Texas A&M University•
1101 Texas Avenue, PO Box 9960
College Station, Texas 77842
Phone 979.764.3570 I Fax 979.764.3496
FACSIMILE COVER SHEET
Date: La -.3D-\4 # of pages including cover:_±__
If you did not receive a complete fax, please call our office immediately for a new transmittal.
TO:~ h"f\D\d, FAX:(SI C\)1JS-M S3
coMPANY~u:z..os Lou<\~ J?lnon<4:J ~:f<o£~c
RE: 1::ucic !;¥Avei\ =:pm_~-e_ '°
FROM: bio~X)Q(\ !\e-'.\e_r
COMPANY: ______ C~1::..:....ty.J..-.=-.:of=-C.:::...o=l=le"""gL..::...e-=-S..:...:.ta:....:..:ti=o=n--------
REMARKS: D Urgent D For your review D Reply ASAP
Pla11ning & De11elopment Services
P U. flOX 9')60 • 11 OJ TEXAS AVENUE • CO!.l.EGE STl\TION • TIX.\S • 77842
TEL 97'!.764.3570 ·FAX. 97'1.764 . .3·1 %
cstx.gov/devservices
DFYI
t\ \. {
,,,,.,, ~
............ _""'---------~CITY OF COLLEGE STATION __________ ................... _.. ... Home of Texas A&M University• --
'J:;O June~, 2014
MEMORANDUM
TO: Travis Martinek; via email: travis@clarkewyndham.com
FROM : Morgan Hester, Staff Planner
SUBJECT: DUCK HAVEN PH 6 (FP) -Final Plat
Staff reviewed the above-mentioned final plat as requested. The following page is a list of staff
review comments detailing items that need to be addressed. If all comments have been
addressed and the following information submitted, your project will be placed on the next
available Planning and Zoning Commission meeting held in the City Hall Council Chambers,
1101 Texas Avenue.
One ( 1) 24"x36" copy of the revised final plat;
Thirteen ( 13) 11 "x17" copies of the revised final plat;
One (1) copy of the digital file of the final plat on diskette or e-mail to
pdsdigitalsubmittal@cstx.gov; and
The Mylar original of the revised final plat with the owner and County Judge's
signatures (will be required after the County's approval).
Upon receipt of the required documents for the Planning & Zoning meeting, your project will be
considered formally filed with the City of College Station. Please note that this application will
expire in 90 days from the date of this memo, if the applicant has not provided written response
comments and revised documents to the Administrator that seek to address the staff review
comments contained herein. If all comments have not been addressed , your project will not be
scheduled for the Planning & Zoning Commission meeting . Your project may be placed on a
future agenda once all the revisions have been made and the appropriate fees paid. Once your
item has been scheduled for the P&Z meeting, the agenda and staff report can be accessed at
the following web site on Monday the week of the P&Z meeting .
http://www.cstx.gov/home/index.asp?page=2481
Please note that a Mylar original of the revised final plat will be required after P&Z approval and
prior to the filing of the plat. If you have any questions or need additional information, please call
me at 979. 764.3570.
Attachments: Staff Review Comments
cc: Gary Arnold, Brazos County Planning & Traffic, via fax 775.0453
Case file #14-00900153
Pla11ni11g & Developme11t Services
P.O. BOX 9960 • l 101 TI~XAS AVENUE ·COLLEGE STATlON ·TEX.AS • 77842
TEL. 979 764.3570 ·FAX. 979.764.3496
cstx.gov/devservices
PLANNING
STAFF REVIEW COMMENTS NO. 1
Project: DUCK HAVEN PH 6 (FP) -14-00900153
1. Please include the number of proposed lots in the title block.
2. Please revise or remove the incorrect information in General Notes #11 .
3. The Vicinity Map refers to Duck Haven Phase 4. Please revise.
4. Please remove the Certificate of Ownership and Dedication that does not provide any
information as this has already been provided with Paul Clarke's information in the first
certificate on the plat.
5. Unless it was requested to be provided on the plat for financial reasons, please remove the
Certificate of Mortgagee.
6. Please add the Certificate of Planning & Zoning Commission.
7. Please note that you, the applicant, are responsible for scheduling the plat for consideration
by the County Commissioner's Court and for getting the County Judge's signature on the
Mylar after they approve the plat.
8. Please note that any changes made to the plans, which have not been requested by the
City of College Station, must be explained in your next transmittal letter and "bubbled" on
your plans. Any additional changes on these plans that the City has not been made aware of
will constitute a completely new review.
Reviewed by: Morgan Hester Date: June 20, 2014
ENGINEERING COMMENTS NO. 1
1. Please show lot corner markers for each lot.
2. Please provide an engineer's estimate, drainage report, and water report.
3. Please make sure to coordinate the construction of Canvasback Cove between Duck Haven
and Saddle Creek. The ROW appears to be offset by approximately 3". Construction is
currently underway in Saddle Creek. Please note on the plans for the contractors to
coordinate. Have the two designs been coordinated?
4. Please show the connection to the proposed Canvasback Cove through Saddle Creek
Phase 11 . The design cannot stop a few feet short of the property line with end of road
signs. The projects will need to connect. Temporary barricades would be more appropriate
for this situation.
5. Please show the water line connection to Saddle Creek Phase 11 . Please coordinate this
with the adjacent project.
6. Based on the alignment of culvert one, it appears the private drainage easement may need
to be extended.
7. Please update the NOi notes to correspond to this project.
8. Please update the rip rap detail to reflect the double culvert proposed.
9. Please show a water service for Lot 1.
10. Please add a gate valve at the beginning of the waterline.
11 . Please show the nearest fire hydrant.
12. Please add all necessary standard details.
Reviewed by: Danielle Singh Date: June 27 , 2014
NOTE: Any changes made to the plans, that have not been requested by the City of CoUege Station, must be explained in your next
transmittal letter and "bubbled" on your plans. Any additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Page 2 of 3
ADDRESSING
1. The proposed street names have been preliminarily approved and will be re-verified prior to
filing any plats to ensure no duplicate street names are being created within Brazos County.
Reviewed by: Robin Krause, Permit Technician Date: June 24, 2014
NOTE: Any changes made to the plans, that have not been requested by the City of College Station, must be explained in your next
transmittal letter and "bubbled" on your plans. Any additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Page 3 of 3
MEMORANDUM
DATE: June 18, 2014
TO: Travis Martinek, via ; travis@clarkewyndham.com
FROM : Morgan Hester, Staff Planner
SUBJECT: DUCK HAVEN PH 6 (FP)
Thank you for the submittal of your Final Plat -Residential application. Danielle Singh and I
have been assigned to review this project. It is anticipated that the review will be completed and
any staff comments returned to you on or before Wednesday, July 2, 2014. If you have
questions in the meantime, please feel free to contact us.
PC: McClure & Browne Engineering/Surveying, via; jeffr@mcclurebrowne.com
P&DS Project No. 14-00900153
.. .:c-t::
Pla11ni11g & Development Services
P.O. BOX 9960 • 1101 TEXAS AVENUE · COLLEGE STATION · TEXAS · 7784~
TEL. 979.764.3570 ·FAX. 979.764.3496
cs t><. gov I devservices
CITY OF C OLLEGE STATION
FINAL PLAT
for
Duck Haven Phase 6
14-00900153
SCALE: Three residential lots and one HOA lot on approximately 10 acres
LOCATION: Generally located southwest of the intersection of Wellborn Road
and Drake Drive in the City's ETJ (Extraterritorial Jurisdiction).
ZONING: N/A (ET J)
APPLICANT: Travis Martinek, Clarke & Wyndham , Inc.
PROJECT MANAGER: Mark Bombek, Staff Planner
mbombek@cstx.gov
RECOMMENDATION: Staff recommends approval of the Final Plat.
Planning & Zoning Commission Page 1 of 4
September 4, 2014
Planning & Zoning Commission
September 4, 2014
~
UJ
> UJ a::
1-z
UJ
~ c..
0 ...J
UJ > UJ Cl
Page 2 of 4
DEVELOPMENT HISTORY
Annexation:
Zoning:
Platting:
Site development:
COMMENTS
Parkland Dedication:
Greenways:
Pedestrian Connectivity:
Bicycle Connectivity:
Impact Fees:
REVIEW CRITERIA
NIA (ETJ)
NIA (ETJ)
A portion of the phase was originally platted as part of phase two
in August 2005, which was later vacated in February 2007. The
Phase 6 Preliminary Plan was approved in March 2014.
Vacant. Three residential lots and one HOA lot are proposed with
this phase, ranging in size from 1. 02 acres to 6. 06 acres.
This development was approved as a Master Plan in the ET J prior
to parkland dedication requirements being applicable in the ET J;
therefore, no parkland dedication is required.
No greenway dedication is proposed or required .
This tract is located in the ET J and no specific facilities for
pedestrian connectivity are proposed or required.
This tract is located in the ET J and no specific facilities for bicycle
connectivity are proposed or required .
N/A
1. Compliance with Comprehensive Plan and Unified Development Ordinance: The
subject property is classified as Rural on the Comprehensive Land Use Plan. While the
subject property is being developed as a subdivision, the City does not have zoning or land
use authority in the Extraterritorial Jurisdiction.
2. Compliance with Subdivision Regulations: The Final Plat complies with the applicable
Subdivision Regulations contained in the Unified Development Ordinance.
STAFF RECOMMENDATION
Staff recommends approval of the Final Plat.
SUPPORTING MA TE RIALS
1. Application
2. Copy of Final Plat
Planning & Zoning Commission
September 4, 2014
Page 3 of 4
Planning & Zoning Commission
September 4, 2014
Page 4 of 4
CLARKE 8r WYNDHAM
REAL ESTATE INVESTMENT SERVICES
TRAVIS MARTINEK
3608 East 29th Street, Suite 100
Bryan, Texas 77802
Office: (979) 846-4384 Fax: (979) 846-1461 Cell: (979) 229-9877
TRANSMITTAL SHEET
TO: DATE:
Jason Schubert 7/29/2014
COMPANY: TOTAL NO. OF PAGES INCLUDING COVER:
Ping & Dvlpmt Serv See below
FAX NUMBER: PHONE NUMBER:
RE :
Duck Haven -Phase 6 Final Plat
0 URGENT 0 FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE
NOTES/COMMENTS:
Jason,
Attached are the following:
• Response to Staff Comments
• Engineer's estimate
• Water Report
• Drainage Report
• 1 -24"x36" copy of the revised Final Plat
• 13 -11"x17" copies of the revised Final Plat
• 2 -24"x36" copies of the revised construction plans
Let me know if you need anything further.
Thanks,
Travis
PLANNING
STAFF REVIEW COMMENTS NO. 1
Project: DUCK HAVEN PH 6 (FP) -14-00900153
• 1. Please include the number of proposed lots in the title block. See revised plat.
, 2. Please revise or remove the incorrect information in General Notes #11 . See revised plat.
3. The Vicinity Map refers to Duck Haven Phase 4. Please revise. See revised plat.
4. Please remove the Certificate of Ownership and Dedication that does not provide any
information as th is has already been provided with Paul Clarke's information in the first
certificate on the plat. See revised plat.
" 5. Unless it was requested to be provided on the plat for financial reasons, please remove the
Certificate of Mortgagee. See revised plat.
• 6. Please add the Certificate of Planning & Zoning Commission. See revised plat.
7. Please note that you , the applicant, are responsible for scheduling the plat for consideration
by the · County Commissioner's Court and for getting the County Judge's signature on the
Mylar after they approve the plat.
8. Please note that any changes made to the plans, which have not been requested by the
City of College Station , must be explained in your next transmittal letter and "bubbled" on
your plans. Any additional changes on these plans that the City has not been made aware of
will constitute a completely new review.
Reviewed by: Morgan Hester Date: June 20, 2014
ENGINEERING COMMENTS NO. 1
1. Please show lot corner markers for each lot.
2. Please provide an engineer's estimate, dra inage report, and water report. See attached.
--?-3. Please make sure to coordinate the construction of Canvasback Cove between Duck Haven
and Saddle Creek. The ROW appears to be offset by approximately 3". Construction is
currently underway in Saddle Creek. Please note on the plans for the contractors to
coordinate. Have the two designs been coordinated?
/4. Please show the connection to the proposed Canvasback Cove through Saddle Creek
Phase 11. The design cannot stop a few feet short of the property line with end of road
signs. The projects will need to connect. Temporary barricades would be more appropriate
for this situation. See revised plans. Street has been extended. Saddle Creek roadway is
/ complete, so there is no need for barricades.
v 5. Please show the water line connection to Saddle Creek Phase 11 . Please coordinate this
with the adjacent project. See revised plans.
6. Based on the al ignment of culvert one, it appears the private drainage easement may need
to be extended. See revised plans. Culvert alignment has been changed and easement
/, width increased .
./ Y. Please update the NOi notes to correspond to this project. See revised plans .
.l's. Please update the rip rap detail to reflect the double culvert proposed. See revised plans. /9· Please show a water service for Lot 1. Near side water services have not been shown on
Duck Haven and similar subdivision plans (Indian Lakes) since the lots are so large and the
/ exact route from the main to the house can vary due to trees, house placement, etc.
10. Please add a gate valve at the beginning of the waterline. See revised plans.
/1YPlease show the nearest fire hydrant. See revised Sheet C1 .1. A 2. Please add all necessary standard details. See revised plans.
Reviewed by: Dan ielle Singh Date: June27,2014
N OTE: Any changes made to the. plans, that have not been requested by the City of College Station, must be explained in your next
transmittal letter and "bubbled" on your plans. Any additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Page 2 of 3
ADDRESSING
1. The proposed street names have been preliminarily approved and will be re-verified prior to
filing any plats to ensure no duplicate street names are being created within Brazos County.
Reviewed by: Robin Krause, Permit Technician Date: June 24 , 2014
NOTE: Any changes made to the plans, that have not been requested by the City of College Station, must be explained in your next
transmittal letter and "bubbled" on your plans. Any additional changes on these plans that have not been pointed out to the
City, will constitute a completely new review. Page 3 of 3
vr OEVELOPM ENT REVIEW
DUCK HAVEN PHASE 6 Case:
14 -153
FINAL PLAT
N ~9R
I
R-4
R Rural R-e
E EJta;te MKP
RS Ru lolad Suburban 0 GS G.!:ner al Sti burba. SC
R-16 Si.ngle Family R·es ide-ntisJ GC
D Dvplex Cl
T Tow n.lious·e BP
DEVELOPMENT REVIEW
Multi-Famliy BPI Business Par Industrial
High Oen$ i!y Mµlti-Family NAP Natural Ale as Prote;;cted
Menufaetu ·ed Home P11r C-3 L~ht Comme1cla!
Office M-1 Llg•hi lndu:strl1I
Subutban Comml!fcia.I M-2 ea'l'j Indus trla.1
Gene-rel Comm cial C-U College .en-d University
Commacia.~l nduslrial Re, D Reses.rch a.ml :Development
Business Psr P-MUD Planned Mixed-Use Deve.lopment
DU CK HAVEN PHASE 6 Case:
14-153
POD
WPC
NG -1
G-2
.G-l
ov
ROD
KO
Planned Development Dis trict
Woll' Pen Cre«lt O&V. Corrid.Qf
C()(e Northga~
TtaMltlona,1 Nctillgallt
R ldentle,I Nortngail!
Corridor Oveilay
Redevelopment District
,Krenek T.ap Overlay
FrnAL PLAT
DRAINAGE REPORT
FOR
DucK HAVEN SUBDIVISION
PHASE 6
July 2014
PREPARED FOR:
SMILING MALLARD DEVELOPMENT, LTD.
3608 E AST 29 TH S TREET
B RYAN, T EXAS 77802
979-846-4384
MBESI No. 10620042
HBMl:H M cCL UR E & BRO\VNE ENGINE ERIN G/S U RVEYING , INC. Ir ~ 1008 Woodcreek Dr .. Suite 103 . College Station, Tx. n845 . (979) 693-3838 Engineer Reg. No. F-458
Survey Reg. No. 101033-00
Duck Haven Subdivision, Phase 6
Stormwater Management Technical Design Summary Report
MEES! No. I 0620042
PART 1 -Executive Summary Report
Section I -Contact Information
Project Designer: McClure and Browne Engineering and Surveying, Inc.
1008 Woodcreek Drive, Suite 103
College Station, TX 77845
979-693-3838
Project Developer: Smiling Mallard Development, Ltd.
3608 East 29th Street
Bryan, Texas 77802
Section 2 -General Information and Project Location
This development is the 6th phase of a multi phase subdivision. Phase 6 consists of 3 lots. The phase is
located in the Duck Haven Village which is along FM 2154 (Wellborn Road). Phase 6 is located at the
intersection of Retriever Run and Canvasback Cove. This phase of the subdivision has been analyzed as
part of the Phase 3 Drainage Report submitted in September, 2006. The development is entirely located
within the Brazos County lim its.
The project site is in the Peach Creek watershed. According to the Flood Insurance Rate Maps for
Brazos County, Texas and incorporated area, Map Number 48041C0375E effective May 16, 2012; no
portion of this property is located in a 100-year flood hazard area.
Culvert pipe calculations are shown with this submittal.
The culverts and ditches peak runoffs were found using the Rational Method. A runoff coefficient ( c) of
0.50 was used for residential areas since all the lots have an area greater than I acre. The culverts and
ditches were analyzed using Microsoft Excel spreadsheets which utilizes Manning's Equation for the
analysis.
Section 3 -Reference
ExhibitA
Exhibit B
Exhibit C-1
Exhibit C-2
Technical Design Summary
Drainage Area Map
Drainage Area Calcu lations
Culvert Calculations
Drainage Report
Indian Lakes, Phase 18
Drainage Report
EXHIBIT A
Technical Design Summary
Duck Haven Subdivision, Phase 6
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
The Cities of Bryan and College Station both require storm drainage design to follow these
Unified Stormwater Design Guidelines. Paragraph C2 of Section Ill (Administration) requires
submittal of a drainage report in support of the drainage plan (stormwater management plan)
proposed in connection with land development projects, both site projects and subdivisions.
That report may be submitted as a traditional prose report, complete with applicable maps,
graphs, tables and drawings, or it may take the form of a "Technical Design Summary". The
format and content for such a summary report shall be in substantial conformance with the
description in this Appendix to those Guidelines. In either format the report must answer the
questions (affirmative or negative) and provide, at minimum , the information prescribed in the
'T echnical Design Summary" in this Appendix.
The Stormwater Management Technical Design Summary Report shall include several parts
as listed below. The information called for in each part must be provided as applicable. In
addition to the requirements for the Executive Summary, this Appendix includes several
pages detailing the requirements for a Technical Design Summary Report as forms to be
completed. These are provided so that they may be copied and completed or scanned and
digitized. In addition , electronic versions of the report forms may be obtained from the City.
Requirements for the means (medium) of submittal are the same as for a conventional report
as detailed in Section Ill of these Guidelines.
Note: Part 1 -Executive Summary must accompany any drainage report
required to be provided in connection with any land development project,
regardless of the format chosen for said report.
Note: Parts 2 through 6 are to be provided via the forms provided in th is
Appendix. Brief statements should be included in the forms as requested,
but additional information should be attached as necessary.
Part 1 -Executive Summary Report
Part 2 -Project Administration
Part 3 -Project Characteristics
Part 4 -Drainage Concept and Design Parameters
Part 5 -Plans and Specifications
Part 6 -Conclusions and Attestation
STORMWATER MANAGEMENT TECHNICAL DESIGN SUMMARY REPORT
Part 1 -Executive Summary
This is to be a brief prose report that must address each of the seven areas listed below.
Ideally it will include one or more paragraphs about each item.
1. Name, address, and contact information of the engineer submitting the report, and
of the land owner and developer (or applicant if not the owner or developer). The
date of submittal should also be included.
2. Identification of the size and general nature of the proposed project, including any
proposed project phases. This paragraph should also include reference to
applications that are in process with either City: plat(s), site plans, zoning requests,
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 1 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
or clearing/grading permits, as well as reference to any application numbers or
codes assigned by the City to such request.
3. The location of the project should be described. This should identify the Named
Regulatory Watershed(s) in which it is located, how the entire project area is
situated therein, whether the property straddles a watershed or basin divide, the
approximate acreage in each basin, and whether its position in the Watershed
dictates use of detention design. The approximate proportion of the property in the
city limits and within the ET J is to be identified, including whether the property
straddles city jurisdictional lines. If any portion of the property is in floodplains as
described in Flood Insurance Rate Maps published by FEMA that should be
disclosed .
4. The hydrologic characteristics of the property are to be described in broad terms:
existing land cover; how and where stormwater drains to and from neighboring
properties; ponds or wetland areas that tend to detain or store stormwater; existing
creeks, channels, and swales crossing or serving the property; all existing drainage
easements (or ROW) on the property, or on neighboring properties if they service
runoff to or from the property.
5. The general plan for managing stormwater in the entire project area must be
outlined to include the approximate size, and extent of use, of any of the following
features: storm drains coupled with streets; detention I retention facilities; buried
conveyance conduit independent of streets; swales or channels; bridges or culverts;
outfalls to principal watercourses or their tributaries; and treatment(s) of existing
watercourses. Also, any plans for reclaiming land within floodplain areas must be
outlined .
6. Coordination and permitting of stormwater matters must be addressed. This is to
include any specialized coordination that has occurred or is planned with other
entities (local, state, or federal). This may include agencies such as Brazos County
government, the Brazos River Authority, the Texas A&M University System, the
Texas Department of Transportation, the Texas Commission for Environmental
Quality, the US Army Corps of Engineers, the US Environmental Protection Agency,
et al. Mention must be made of any permits, agreements, or understandings that
pertain to the project.
7. Reference is to be made to the full drainage report (or the Technical Design
Summary Report) which the executive summary represents. The principal
elements of the main report (and its length), including any maps, drawings or
construction documents, should be itemized. An example statement might be:
"One __ -page drainage report dated one set of
construction drawings (_sheets) dated , and a
___ -page specifications document dated comprise
the drainage report for this project."
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 2 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 - Project Administration I Start (Page 2.1)
Engineering and Design Professionals Information
Engineering Firm Name and Address: Jurisdiction
McClure & Browne Engineering/Surveying, Inc. City: Bryan
1008 Woodcreek Drive, Suite 103 x College Station
College Station, Texas 77845 Date of Submittal:
(979)693-3838
Lead Engineer's Name and Contact lnfo.(phone , e-mail, fax): Other:
Jeffery L. Robertson, P.E .
Supporting Engineering I Consulting Firm(s): Other contacts:
Developer I Owner I Applicant Information
Developer I Applicant Name and Address: Phone and e-mail:
Smiling Mallard Development, Ltd. (979) 846-4384
3608 East 29th Street
Bryan, Texas 77802
Property Owner(s) if not Developer I Applicant (&address): Phone and e-mail:
Project Identification
Development Name: Duck Haven, Phase 6
Is subject property a site project, a single-phase subdivision, or part of a multi-phase subdivision?
Multi-phase Subdivision If multi-phase, subject property is phase 6 of
Legal description of subject property (phase) or Project Area:
(see Section II , Paragraph B-3a)
Duck Haven, Phase 6
If subject property (phase) is second or later phase of a project, describe general status of all
earlier phases. For most rece nt earlier phase Include submittal and review dates.
The project is the 6th phase of a multi phase subdivision. At this time the first phases h<v
been built. The most recent phase submitted was Ph. 4.
General Location of Project Area, or subject property (phase):
Project site is located near the intersection of Retriever Run and Canvasback Cove
in Brazos County, Texas.
In City Limits? Extraterritorial Jurisdiction (acreage):
Bryan: acres. Bryan: College Station: 10 .02
College Station: acres. Acreage Outside ET J:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 3 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
e
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Continued (page 2.2)
Project Identification (continued)
Roadways abutting or within Project Area or Abutting tracts, platted land, or built
subject property: developments:
Retriever Run Duck Haven Phase 4
Named Regulatory Watercourse(s) & Watershed(s): Tributary Basin(s):
Phase 6 is located in the Peach Creek Watershed. The nearest tributary is Peach Creek S.
Tributary 7.2 (See FEMA Map 48041C037SE) .
Plat Information For Project or Subject Property (or Phase)
Preliminary Plat File#: Fi nal Plat File #: Date:
Name: Pending Approval Status and Vol/Pg: Pending App roval
If two plats, second name: File#:
Status: Date:
Zoning Information For Project or Subject Property (or Phase)
Zoning Type: Existing or Proposed? Case Code:
Case Date Status:
Zoning Type: Existing or Proposed? Case Code:
Case Date Status:
Stormwater Management Planning For Project or Subject Property (or Phase)
Planning Conference(s) & Date(s): Participants:
Preliminary Report Required? Submittal Date Review Date
Review Comments Addressed? Yes --No --In Writing? When?
Compliance With Preliminary Drainage Report. Briefly descri be (or attach documentation
explaining) any deviation(s) from provisions of Preliminary Drainage Report, if any.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 4 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Continued (page 2.3)
Coordination For Project or Subject Property (or Phase)
Note: For any Coordination of stormwater matters indicated below, attach documentation
describing and substantiating any agreements, understandings, contracts, or approvals .
Coordination Dept. Contact: Date: Subject:
With Other
Departm ents of
Jurisdiction
City (Bryan or
College Station)
Coordination With Summarize need(s) & actions taken (include contacts & dates):
Non-jurisdiction
City Needed?
Yes No x ----
Coordination with Summarize need(s) & actions taken (include contacts & dates):
Brazos County
Need){?
Yes No_!_
Coordination with Summarize need(s) & actions taken (include contacts & dates):
TxDOT Needed?
Yes No x ----
Coordination with Summarize need(s) & actions taken (include contacts & dates):
TAMUS Needed?
Yes No x ----
Permits For Project or Subject Property (or Phase)
As to stormwater management, are permits requ ired for the proposed work from any of the entities
listed below? If so, summarize status of efforts toward that obiective in spaces below.
Entity Permitted or Status of Actions (include dates) Approved ?
US Army Crops of
Engineers
No x Yes ---
US Environ mental
Protection Agency
No x Yes ---
Texas Commission on A Stormwater Pollution Prevention Plan must be
Environmental Quality implemented prior to the start of construction
No Yes x according to TPDES General Permit No. TXRlSOOOO. ----
Brazos River
Authority
No x Yes ---
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 5 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert:i£ Characteristics I Start (Page 3.1)
Nature and Scope of Proposed Work
Existing: Land proposed for development currently used, including extent of impervious cover?
Existing undeveloped land (Dense tree cover) . Existing impervious cover is
approximately 0 sf.
Site __ Redevelopment of one platted lot, or two or more adjoining platted lots.
Development __ Building on a single platted lot of undeveloped land .
Project __ Building on two or more platted adjoining lots of undeveloped land.
(select all __ Building on a single lot, or adjoining lots, where proposed plat will not form applicable) a new street {but may include ROW dedication to existing streets).
__ Other (explain):
Subdivision _x_ Construction of streets and utilities to serve one or more platted lots.
Development __ Construction of streets and utilities to serve one or more proposed lots on
Project lands represented by pending plats.
Site projects: building use(s), approximate floor space, impervious cover ratio.
Describe Subdivisions: number of lots by general type of use, linear feet of streets and
Nature and drainage easements or ROW.
Size of This phase of the subdivision includes 3 lots. The development
Proposed consists of approximately 475 LF of streets with 16' PUE on each
Project side of the streets ROW.
Is any work planned on land that is not platted If yes, explain:
or on land for which platting is not pending?
x No Yes ----
FEMA Floodplains
Is any part of subject property abutting a Named Regulatory Watercourse I No_x_ Yes __ (Section II , Paragraph B1) or a tributary thereof?
Is any part of subject property in floodplain I No_x_ Yes Rate Map 48041C0375E area of a FEMA-regulated watercourse? --
Encroachment(s) Encroachment purpose(s): __ Building site(s) __ Road crossing(s) into Floodplain
areas planned? __ Utility crossing(s) __ Other (explain):
No x --
Yes --
If floodplain areas not shown on Rate Maps, has work been done toward amending the FEMA-
approved Flood Study to define allowable encroachments in proposed areas? Explain.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 6 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Continued (Page 3.2)
Hydrologic Attributes of Subject Property (or Phase)
Has an earlier hydrologic analysis been done for larger area including subject property?
Yes Reference the study (& date) here, and attach copy if not already in City files.
Duck Haven Subdivision; October , 2006 x --
Is the stormwater management plan for the property in substantial conformance with the
earlier study? Yes x No If not, explain how it differs.
No If subject property is not part of multi-phase project, describe stormwater management
plan for the property in Part 4.
--If property is part of multi-phase project, provide overview of stormwater management plan
for Project Area here. In Part 4 describe how plan for subject property will comply
therewith.
Stormwater Detention has been provided for this phase with a
detention pond developed with a previous phase .
Do existing topographic features on subject property store or detain runoff? x No Yes ----Describe them (include approximate size, volume, outfall , model , etc).
Any known drainage or flooding problems in areas near subject property? x No Yes ----Identify:
Based on location of study property in a watershed, is Type 1 Detention (flood control) needed?
(see Table B-1 in Appendix B)
__ Detention is required. --Need must be evaluated. __ Detention not requ ired.
What decision has been reached? By whom?
Detention study during Phase 3.
If the need for How was determination made? Type 1 Detention Detention was required and is provided for the entire must be evaluated: Duck Haven Subdivision. However, Phase 6 does not require
any additional detention.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 7 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Continued (Page 3.3)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Does subject property straddle a Watershed or Basin divide? x No Yes If yes, ----describe splits below. In Part 4 describe desiqn concept for handlinq this.
Watershed or Basin Larger acreage Lesser acreage
Above-Project Areas(Section II, Paragraph 83-a)
Does Project Area (project or phase) receive runoff from upland areas? _x_ No --Yes
Size(s) of area(s) in acres: 1) 2) 3) 4)
/ ~C~acterist~ach instance) (overland sheet, shallow concentrated, recognizable
Conce7 , small creek (non-regulatocy), regulatory Watercoucse or trlbutacy);
Phase 18 does n receive stormwater from upstream lands.
""-
Flow determination: Outline hydrologic methods and assumptions:
Does storm runoff drain from public easements or ROW onto or across subject property?
--No --Yes If yes, describe facilities in easement or ROW:
Are changes in ru noff characteristics subject to change in future? Explain
Conveyance Pathways (Section II, Paragraph C2)
Must runoff from study property drain across lower properties before reaching a Regu latory
Watercourse or tributary? x No Yes
Describe length and characteristics of each conveyance pathway(s). Include ownership of
property(ies).
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 8 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Continued (Page 3.4)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Conveyance Pathways (continued)
Do drainage If yes, for what part of length? % Created by? __ plat, or
easements
exist for any __ instrument. If instrument(s), describe their provisions.
part of
pathway(s)?
No --
Yes --
Where runoff must cross lower properties, describe characteristics of abutting lower
property(ies). (Existing watercourses? Easement or Consent aquired?)
Pathway
Areas
Describe any bu ilt or improved drainage facilities existing near the property (culverts,
bridges, lined channels, buried conduit, swales, detention ponds, etc).
Nearby
Drainage Do any of these have hydro logic or hydraulic influence on proposed stormwater Facilities design? x No Yes If yes, explain: ----
STORMWATER DESIG N GUIDELINES
Effective February 2007
Page 9 of 26 APPE NDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Start (Page 4.1)
Stormwater Management Concept
Discharge(s) From Upland Area(s)
If runoff is to be received from upland areas, what design drainage features will be used to
accommodate it and insure it is not blocked by future development? Describe for each area,
flow section, or discharge point.
Discharge(s) To Lower Property(ies) (Section II, Paragraph E1)
Does project include drainage features (existing or future) proposed to become public via
platting? x No Yes Separate Instrument? x No Yes -- --
Per Guidelines reference above, how will Establishing Easements (Scenario 1) runoff be discharged to neighboring --
property(ies)? --Pre-development Release (Scenario 2)
Combination of the two Scenarios --
Scenario 1: If easements are proposed, describe where needed, and provide status of actions
on each. (Attached Exhibit# )
Scenario 2: Provide general description of how release(s) will be managed to pre-development
conditions (detention, sheet flow, partially concentrated, etc.). (Attached Exhibit# )
Combination: If combination is proposed, explain how discharge will differ from pre-
development conditions at the property line for each area (or point) of release.
If Scenario 2, or Combination are to be used, has proposed design been coordinated with
owner(s) of receiving property(ies)? No --Yes Explain and provide
documentation.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 10 of26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.2)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project
Identify gaining Basins or Watersheds and acres shifting:
Will project result
in shifting runoff
between Basins or
between What design and mitigation is used to compensate for increased runoff
Watersheds? from gaining basin or watershed? x No --
Yes --
How will runoff from Project 1. __ With facility(ies) involving other development projects.
Area be mitigated to pre-2. __ Establishing features to serve overall Project Area. development conditions?
Select any or all of 1, 2, 3. _x_ On phase (or site) project basis within Project Area.
and/or 3, and explain below.
1. Shared facility (type & location of facility; design drainage area served; relationship to size of
Project Area): (Attached Exhibit# )
2. For Overall Project Area (type & location of facilities): (Attached Exhibit# )
3. By phase (or site) project: Describe planned mitigation measures for phases (or sites) in
subsequent questions of this Part.
Are aquatic echosystems proposed? __ No --Yes In which phase(s) or
project(s)?
C'-· -0 <ll <Jl c <ll c >-Are other Best Management Practices for reducing stormwater pollutants proposed? ..c.!1 o._ No Yes Summarize type of BMP and extent of use: -- --<Jl c
Cl ·u;
<ll 0 0 z
(ii
xi If design of any runoff-handling facilities deviate from provisions of B-CS Technical ·u
<ll Specifications, check type facility(ies) and explain in later questions. 0.
CJ) Detention elements Conduit elements Channel features <ll ------.< Swales Ditches Inlets __ Valley gutters __ Outfalls ------
--Culvert features __ Bridges Other
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 11 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 - Drainage Conce12t and Design Parameters I Continued (Page 4.3)
Stormwater Management Concept {continued)
Within Project Area Of Multi-Phase Project {continued)
Will Project Area include bridge(s) or culvert(s)? _x __ No __ Yes Identify type and
general size and In which phase(s).
If detention/retention serves (will serve) overall Project Area, describe how it relates to subject
phase or site project (physical location, conveyance pathway(s), construction sequence):
Within Or Serving Subject Property {Phase, or Site)
If property part of larger Project Area, is design in substantial conformance with earl ier analysis
and report for larger area? __ Yes No, then summarize the difference(s):
Identify whether each of the types of drainage features listed below are included, extent of use ,
and general characteristics.
Typical shape? I Surfaces?
C'-· V-Shape Grass -a Q) (/) Steepest side slopes: Usual front slopes: Usual back slopes: (/)
:J Q)
(/) >-4:1 4:1 4:1
Q)
xi .s:::. Fl ow line slopes: least 0.6% Typical distance from travelway: 11' g
-a Varies 2.2% (Attached Exhibit# )
Q) 0 typical greatest
:Q z (/) -a
I
cu e Are longitudinal culvert end s in compliance with B-CS Standard Specifications?
Q) x Yes No , then explain: ~
(/) At intersections or otherwise, do valley gutters cross arterial or collector streets? ..c Q) No Yes If yes explain: ~ C'-· >---u -a
I
.s:::. Q) -(/) ·-:J ~ .._ Are valley gutters proposed to cross any street awa y from an intersection? (/) Q) --Q) "S 0 No Yes Explain: (number of locations?) ~ rn z -- --
--a I ~ c x .._ cu
<{
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 12 of26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters I Continued (Page 4.4)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
C'-·
""O Q)
Ul Ul ::::J Q)
E >-~I Ul
c
Gutter line slopes: Least Usual Greatest
Are inlets recessed on arterial and collector streets? __ Yes
identify where and why.
__ No If "no",
Will inlets capture 10-year design stormflow to prevent flooding of intersections (arterial
with arterial or collector)? __ Yes __ No If no , explain where and why not.
Will inlet size and placement prevent exceeding allowable water spread for 10-year
design storm throughout site (or phase)? __ Yes __ No If no, explain.
Sag curves: Are inlets placed at low points? __ Yes __ No Are inlets and
conduit sized to prevent 100-year stormflow from ponding at greater than 24 inches?
__ Yes __ No Explain "no" answers.
Will 100-yr stormflow be contained in combination of ROW and buried conduit on
whole length of all streets? __ Yes __ No If no, describe where and why.
Do designs for curb, gutter, and inlets comply with B-CS Technical Specifications?
___ Yes __ No If not, describe difference(s) and attach justification.
Are any 12-inch laterals used?
used.
__ No __ Yes Identify length(s) and where
Pipe runs between system I Typical Longest
access points (feet): -----
Are junction boxes used at each bend? __ Yes __ No
and why.
If not, explain where
·-0 1 ~, !---------------------~-----------~ u; Are downstream soffits at or below upstream soffits? Least amount that hydraulic
.!!!. Yes __ No __ If not, explain where and why: grade line is below gutter line
(system-wide):
STORMWATER DESIGN GUIDELINES
Effecti ve February 2007
Page 13 of26 APPENDIX. D TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters I Continued (Page 4.5)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Ul Q) u c
C1l Iii c
Describe watercourse(s), or system(s) receiving system discharge(s) below
(include design discharge velocity, and angle between converging flow lines).
1) Watercourse (or system), velocity, and angle?
2) Watercourse (or system), velocity, and angle?
3) Watercourse (or system), velocity, and angle?
For each outfall above, what measures are taken to prevent erosion or scour of
receiving and all facilities at juncture?
Q) 1) "§
C1l g-2)
tfl
§ 3)
Are swale(s) situated along property lines between properties? __ No __ Yes
C'-· tfl (j)
~ tfl
Number of instances: For each instance answer the following questions.
Surface treatments (including low-flow flumes if any):
Iii Q) Flow line slopes (minimum and maximum): ~>-I
.8
al 0 ~ z Outfall characteristics for each (velocity, convergent angle, & end treatment).
~x i
tfl
Q) .;c Will 100-year design storm runoff be contained within easement(s) or platted drainage
ROW in all instances? __ Yes __ No If "no" explain:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 14 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage ConceQt and Design Parameters I Continued (Page 4.6)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Are roadside ditches used? --No _x_ Yes If so, provide the following: CJ) Is 25-year flow contained with 6 inches of freeboard throughout? _x_ Yes No Q) .c --g Are top of banks separated from road shoulders 2 feet or more? _x_ Yes --No
0 Are all ditch sections trapezoidal and at least 1.5 feet deep? Yes x No Q) ----" For any "no" answers provide location(s) and explain: CJ)
" All Ditches are V-shaped and at least 2 ' deep ro 0 0:::
If conduit is beneath a swale, provide the following information (each instance).
Instance 1 Describe general location, approximate length:
CJ)
Q) >-Is 100-year design flow contained in conduit/swale combination? --Yes No --I~ If "no" explain:
c Space for 100-year storm flow? ROW Easement Width 0 ro z u; Swale Surface type, minimum Conduit Type and size, minimum and maximum x i~ and maximum slopes: slopes, design storm:
0
C'-· ~ " .!!J. " Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): Q) ro c >-c ro c
.c ro
u '--
c .E
Q) c Access Describe how maintenance access is provided (to swale, into conduit): Q_ 0 0 ~ -0 E :::i -~ 0 -c c Instance 2 Describe general location, approximate length: Q)
" E Q) ro CJ) CJ) :::i
CJ) Q) Is 100-year design flow contained in conduit/swale combination? Yes No c " --·;:; --0 If "no" explain: ~ 2
c Q_
..a ill Space for 100-year storm flow? ROW Easement Width E Q)
0 .c u CJ) Swale Surface type, minimum Conduit Type and size, minimum and maximum -Q)
:::i ~ and maximum slopes: slopes, design storm: " c ro
0 Q_ u Q) Inlets Describe how conduit is loaded (from streets/storm drains, inlets by type): ]! CJ)
c ro 0 3: CJ)
Q) Access Describe how maintenance access is provided (to swale, into conduit): -<
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 15 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.7)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
If "ye s" provide the following information for each instance:
Instance 1 Describe general location, approximate length , surfaci ng:
c
~
E 0.. x e w -:i:: ui Is 100-year design flow contained in swale? --Yes --No Is swale wholly a Cll c ~I within drainage ROW? Yes No Expla in "no" answers: 2 ----
Cll .:::
Cll Access Describe how maintenance access is provide: u Cll '-a -z :::J 1 x I Instance 2 Describe general location, approximate length, surfacing:
Cll ·;:: C'-·
:::J r.n
.0 c :5 Cll
a E
£ Cll r.n Is 100-year design flow contained in swale? Yes No Is swale wholly "§ C1l ----Cll within drainage ROW? __ Yes No Explain "no" answers: r.n '---~ a
C1l s 3 r.n 0
~ 0::: Access Describe how maintenance access is provided:
u
.0 :::J 0..
Instance 3, 4, etc. If swales are used in more than two instances, attach sheet
providing all above information for each instance.
"New" channels: Will any area(s) of concentrated flow be channel ized (deepened,
widened, or straightened) or otherwise altered? --No --Yes If only slightly
shaped, see "Swales" in this Part. If creating side banks, provide information below.
C'-· "O c Will design replicate natural channel? Yes No If "no", for each instance Cll --r.n ~ describe section shape & area, fl ow line slope (min. & max .), surfaces, and 100-year a 0.. 0.. x design flow, and amount of freeboard: e w
0.. Instance 1: r.n r.n c Cll
Cll >-
E
I Cll > Instance 2: a '-0..
E a z
Qi
xi c Instance 3: c C1l ..c u
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 16 of 26 APP ENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concegt and Design Parameters I Continued (Page 4.8)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Existing channels {small creeks}: Are these used? --No --Yes
If "yes" provide the information below.
Will small creeks and their floodplains remain undisturbed? __ Yes --No How
many disturbance instances? Identify each planned location:
For each location, describe length and general type of proposed improvement
(including floodplain changes):
For each location, describe section shape & area, flow line slope (min. & max.),
surfaces, and 100-year design flow.
'C QJ
::::l c ~ Watercourses {and tributaries}: Aside from fringe changes, are Regulatory 0 Watercou rses proposed to be altered? __ No Yes Explain below. ~ --
IJl c Submit full report describing proposed changes to Re gulatory Watercourses. Address
QJ existing and proposed section size and shape, surfaces, alignment, fl ow line changes, E QJ length affected, and capacity, and provide full documentation of analysis procedures > e and data. Is full report submitted? Yes --No If "no" explain : 0..
E -
Q3 c c C1l All Proposed Channel Work: For all proposed channel work, provide information ..c: u requested in next three boxes.
If design is to replicate natural channel , identify location and length here, and descri be
design in Special Design section of this Part of Report.
Will 100-year fl ow be contained with one foot of freeboard? --Yes --No If
not, identify location and explain:
Are ROW I easements sized to contain channel and required maintenance space?
--Yes --No If not, identify location(s) and explain:
STORMWATER DESIGN GUIDELI NES
Effective February 2007
Page 17 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage ConceQt and Design Parameters l Continued (Page 4.9)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
How many facilities for subject property project? For each provide info. below.
For each dry-type facilitiy: Facility 1 Facility 2
Acres served & design volume+ 10%
100-yr volume: free flow & plugged
Design discharge (10 yr & 25 yr)
Spillway crest at 100-yr WSE? __ yes --no __ yes --no
Berms 6 inches above plugged WSE? __ yes --no __ yes --no
Explain any "no" answers:
Ul aJ >-
I For each facility what is 25-yr design Q, and design of outlet structure?
Facility 1:
0 z Facility 2:
xi Do outlets and spillways discharge into a public facility in easement or ROW?
Facility 1: __ Yes No Facility 2: Yes No ---- --C'-· If "no" explain: "'O aJ Ul 0 c.. 0 '-0... For each , what is velocity of 25-yr design discharge at outlet? & at spillway? Ul aJ Facility 1: & Facility 2: & ~ ·u Are energy dissipation measures used? No Yes Describe type and cu ----
LL location:
c 0 ~ aJ a:;
0
aJ For each, is spillway surface treatment other than concrete? Yes or no, and describe: ~ Facility 1:
Facility 2:
For each, what measures are taken to prevent erosion or scour at receiving facility?
Facility 1:
Facility 2:
If berms are used give heights, slopes and surface treatments of sides.
Facility 1:
Facility 2:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 18 of26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUM MARY
Part 4 -Drainage Conce12t and Design Parameters I Continued (Page 4.10)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (conti nued)
Do structures comply with 8-CS Specifications? Yes or no, and explain if "no":
Facility 1;
tJ) Q) :;:;
~'O C1l Q) Facility 2: LL :J c c: :.;:::; 0 c :;:::; 0 c (J Q) ~
(jJ For addition al facil ities provide all same information on a separate sheet. 0
Are parking areas to be used for detention? __ No --Yes What is
maximum depth due to re quired design storm ?
Roadside Ditches: Will cu lverts serve access driveways at roadside ditches?
No x Yes If "yes", provide information in next two boxes. ----
Will 25-yr. flow pass without flowing over driveway in all cases? x Yes No ----
Without causing flowing or standing water on public road wa y? x Yes No ----
Designs & materials comply with 8-CS Techn ical Specifications? __ x_ Yes --No
Explain any "no" answers:
C'-· tJ)
Cl c "iii Are culverts parallel to public roadway alignment? __ Yes x No Explain : tJ) e --
(J tJ)
Q) 2 >-! xi Creeks at Private Drives: Do private driveways, drives, or streets cross drainage
C1l wa~s that serve Above-Project areas or are in public easements/ ROW?
"O 0
Q) z __ No __ Yes If "yes" provide informati on below.
tJ)
I :J How many instances? Describe location and provide information below. tJ) t Q) Location 1: ~ :J (J
Q) Location 2: ~
Location 3:
For each location enter value for: 1 2 3
Design year passing without toping travelway? 100 100
Water depth on travelway at 25-year flow? 0" 0"
Water depth on travelway at 100-year flow? 0 11 0"
For more instances describe location and same information on separate sheet.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 19 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised Febru ary 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.11)
Stormwater Management Concept (continued)
Wi thin Or Serving Subject Property (Phase, or Site) (continued)
Named Regulato!)l Watercourses {&Tributaries}: Are cu lverts proposed on these
facilities? x No __ Yes , then provide full report documenting assumptions, --criteria , analysis, computer programs, and study findings that support proposed
design(s). Is report provided? __ Yes --No If "no", explain:
~ Arterial or Major Collector Streets: Will culverts serve these types of roadways? w Q) x No Yes How man y instances? For each identify the .r:::.
<Jl ----
Q) location and provide the information below.
<Jl (ii Instance 1: Q) '->-~ I ~ Instance 2:
Instance 3: c
0 o~ Yes or No for the 100-year design flow: 1 2 3 z E
x i~ Headwater WSE 1 foot below lowest curb top?
Spread of headwater within ROW or easem ent?
E C'-· Ctl Is velocity limited per conditions (Table C-11 )? <Jl <Jl g>-o Explain any "no" an swer(s): ·-c ~ Ctl
0 c '-0 u :;J >-Ctl Ctl (_) ~ .Q
-0 Q) Ctl ..Cl Minor Collector or Local Streets: Will culverts serve these types of streets? 0 ·-'-'-
(_) (_) x No Yes How many instances? for each identify the ·-<Jl -----Q) -g -0 location and provide the information below: c.. Q) ..... c.. Instance 1: Ctl ~
-0 >-Instance 2: Q) c
<Jl Ctl :l ..... Instance 3: <Jl 0
t: <Jl Q) Q) For each instance enter value, or "yes" I "no" for~ 1 2 3 .2! (_) :l c (_) Ctl Design yr. headwater WSE 1 ft. below curb top? Q) (ii '-c <( ·-100-yr. max. depth at street crown 2 feet or less? Q)
'-0 Product of velocity (fps) & depth at crown (ft) = ? E
'-Is velocity limited per conditions (Table C-11 )? 0 ~
Limit of down stream analysis (feet)?
Explain any "no" answers:
STORMWATER DESIG N GUIDELI NES
Effective February 2007
Page 20 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.12)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (conti nued)
All Proposed Culverts: For all proposed culvert facilities (except driveway/roadside
ditch intersects) provide information requested in next eight boxes.
Do culverts and travelways intersect at 90 degrees? --Yes --No If not,
identify location(s) and intersect angle(s), and justify the design(s):
Does drainage way alignment change within or near limits of culvert and surfaced
approaches thereto? __ No --Yes If "yes" identify location(s), describe
change(s), and justification:
Are flumes or conduit to discharge into culvert barrel(s)? __ No __ Yes If yes,
identify location(s) and provide justification:
'2 Are flumes or conduit to discharge into or near surfaced approaches to culvert ends?
Q) --No --Yes If "yes" identify location(s), describe outfall design treatment(s):
:::J c ~ 0 ~
en t
Q) Is scour/e rosion protection provided to ensure long term stability of culvert structural ~
:::J com ponents, and surfacing at culvert ends? Yes No If "no" Identify u ----locations and provide justification(s):
Will 100-yr fl ow and spread of backwater be fully contained in street ROW, and/or
drainage easements/ ROW? __ Yes --No if not, why not?
Do apprecia ble hydraulic effects of an y culvert extend downstream or upstream to
neighboring land(s) not encompassed in subject property? --No --Yes If
"yes" describe location(s) and mitigation measures:
Are all culvert designs and materials in compl iance with 8-CS Tech. Specifications?
--Yes --No If not, explain in Special Design Section of this Part.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 21 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concegt and Design Parameters I Continued (Page 4.13)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Is a bridge included in plans for subject property project? --No --Yes
If "yes" provide the following information .
Name(s) and functional classification of the roadway(s)?
What drainage way(s) is to be crossed?
~ Q)
OJ <J ·;::
CD
A full report supporting all aspects of the proposed bridge(s) (structural, geotechnical,
hydrologic, and hydraulic factors) must accompany th is summary report. Is the report
provided? --Yes --No If "no" explain:
Is a Stormwater Provide a general description of planned techniques:
£ Pollution Prevention Sil t fence and inlet fi ltration will serve as the
C1l Plan (SW3P) main protecti on against stormwater pollution. The :::i a established for Contractor shall use any other L-project construction? mean s neces sary
Q) t hroughout construction . (ii s No x Yes ----
Special Designs -Non-Traditional Methods
Are any non-traditional methods (aquatic echosystems, wetland-type detention, natural stream
replication, BMPs for water quality, etc.) proposed for any aspect of subject property project?
x No Yes If "yes" list general type and location below. ----
Provide full report about the proposed special design(s) including rationale for use and
expected benefits. Report must substantiate that stormwater management objectives will not
be compromised, and that maintenance cost will not exceed those of traditional design
solution(s). Is report provided? --Yes --No If "no" explain:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 22 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4-Drainage Conce~t and Design Parameters I Continued (Page 4.14)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Special Designs -Deviation From 8-CS Technical Specifications
If any design(s) or material(s) of traditional runoff-handling facilities deviate from provisions of
8-CS Technical Specifications, check type facility(ies) and explain by specific detail element.
--Detention elements __ Drain system elements --Channel features
Culvert features Swales Ditches Inlets Outfalls ----------
__ Valley gutters __ Bridges (explain in bridge report)
In table below briefly identify specific element, justification for deviation(s).
Specific Detail Element Justification for Deviation (attach additional sheets if needed)
1)
2)
3)
4)
5)
Have elements been coordinated with the City Engineer or her/his designee? For each item
above provide "yes" or "no", action date, and staff name:
1)
2)
3)
4)
5)
Design Parameters
Hydrology
Is a map(s) showing all Design Drainage Areas provided? x Yes No ----
Briefly summarize the range of applications made of the Rational Formula:
For the Rational Formula we assumed residential areas had a
runoff coefficient of 0.5 for large residential or estate lots.
What is the size and location of largest Design Drainage Area to which the Rational Formula
has been applied? 3.8 acres Location (or identifier): Drainage Area 1
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 23 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.15)
Design Parameters (continued)
Hydrology (continued)
In making determinations for time of concentration, was segment analysis used? x No Yes In approximately what percent of Design Drainage Areas? %
As to intensity-duration-frequency and rain depth criteria for determining runoff flows, were any
criteria other than those provided in these Guidelines used? _x_ No --Yes If "yes"
identify type of data, source(s), and where applied:
For each of the stormwater management features listed below identify the storm return
frequencies (year) analyzed (or checked), and that used as the basis for design.
Feature Analysis Year(s) Design Year
Storm drain system for arterial and collector streets
Storm drain system for local streets
Open channels
Swale/buried conduit combination in lieu of channel
Swales
Roadside ditches and culverts serving them 2,5 ,10,25,50,100 25
Detention facilities: spillway crest and its outfall
Detention facilities: outlet and conveyance structure(s)
Detention facilities: volume when outlet plugged
Culverts serving private drives or streets
Culverts serving public roadways
Bri dges: provide in bridge report.
Hydraulics
What is the range of design flow velocities as outlined below?
Design fl ow velocities; 25 year Gutters Cond uit Culverts Swales Channels
Highest (feet per second) 7.49
Lowest (feet per second) 5.51
Streets and Storm Drain Systems Provide the summary information outlined below:
Roughness coefficients used: For street gutters: NA
For conduit type(s) RCP 0 .013 Coefficients:
STOR MWATER DESIGN GUIDELIN ES
Effective February 2007
Page 24 of 26 APPENDIX. D: TECH. DESIGN SU MMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce12t and Design Parameters I Continued (Page 4.16)
Design Parameters (continued)
Hydraulics (continued)
Street and Storm Drain Systems (continued)
For the following, are assumptions other than allowable per Guidelines?
Inlet coefficients? No Yes Head and friction losses No Yes --------
Explain any "yes" answer:
In conduit is velocity generally increased in the downstream direction? --Yes --No
Are elevation drops provided at inlets, manholes, and junction boxes? --Yes --No
Explain any "no" answers:
Are hydraulic grade lines calculated and shown for design storm? --Yes --No
For 100-year flow conditions? --Yes --No Explain any "no" answers:
What tailwater conditions were assumed at outfall point(s) of the storm drain system? Identify
each location and explain:
Open Channels If a HEC analysis is utilized, does it follow Sec Vl.F.5.a? --Yes --No
Outside of straight sections, is flow regime within limits of sub-critical flow? _x_ Yes __ No
If "no" list locations and explain:
Culverts If plan sheets do not provide the following for each culvert, describe it here.
For each design discharge, will operation be outlet (barrel) control or inlet control?
All culverts will be inlet control led.
Entrance, friction and exit losses:
A 0 .5 entrance and exi t loss coef ficients are used f or sloped end treatments
and square edged headwall s with wi ngwalls .
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 25 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4-Drainage ConceQt and Design Parameters I Continued (Page 4.17)
Design Parameters (continued)
Computer Software
What com puter software has been used in the analysis and assessment of storm water
management needs and/or the development of facility designs proposed for subject property
project? List them below, being sure to identify the software name and version, the date of the
version, any applicable patches and the publisher
Microsoft Excel Spreadsheet
Part 5 -Plans and SQecifications
Requirements for subm ittal of con struction drawings and specifications do not differ due to use of a
Technical Design Summary Report. See Section Ill, Paragraph C3.
Part 6 -Conclusions and Attestation
Conclusions
Add any concluding information here:
The Duck Haven Subdivision, Phase 6 will have no adverse impact to downstream
properties and conforms to the overall subdivision report.
Attestation
Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical
Desiqn Summary Drainaqe Report by siqninq and sealinq below.
"This report (plan) for the drainage design of the development named in Part B was prepared
by me (or under my supervision) in accordance with provisions of the Bryan/College Station
Unified Drainage Design Guidelines for the owners of the property. All licenses and permits
required by any and all state and federal regulatory agencies for the proposed drainage
improvements have been issued or fa ll under applicable general permits." _ ......... ,....,'
J? L.Qbt~ r-T
" u Lie~ 1sed Professional Engineer
State of Texas PE No. qvz~5
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 26 of 26
(Affix Seal) ---... r-OF r~""t~ -'\ \'.;, \ ,':'· ....... (: __ ,. ,. '.. ~ ··. 4 , ~ ... ]tf-~ ··.-0· if; f*/ ':(;;> .... * I' .... / ..... ~ · .... f_••• • •• t ••"I I.••••••••• ...... •:.' • ~ JEFF:RY L. RIJ8ERTS8 •J r .............................. ,, <I\ 8 4 7 4 5 /rJ:-· , '~ ,-:) • ~ ;• • ~.>. l.,
' (. .. ..._ '.'It,.$:: .. ·::'(_·'.•.·~{.: .,lfll'
APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
Drainage Report
EXHIBITB
Drainage Area Map
Duck Haven Subdivision, Phase 6
EXHIBITC
Runoff and Culvert Calculations
Drainage Report
Duck Haven Subdivision, Phase 6
i < ! UJ Cl
I
a::: UJ _J < < 0.. < UJ UJ 0 j:: I-(.!) a::: _J z <
< < UJ z UJ u > UJ ::!! i z _J Cl _J
< < UJ < Vi UJ < I-Cl UJ > I I-a::: 0 z a::: UJ < 0 Cl I-::i < a::: 0.. I-
NO. AC. : 0.4 0.5 0.9
Ex. Culvert _2.:_~_Q~7.10 0.00 3.55
C ulvert1 4.00! 0.00 4.00 0.00 2-:00
EXHIBIT C-1
Rational Formula Drainage Area Calculations
Duck Haven Phase 6
s: 1 ~ I i I i i 0 s: s: _J I u. IL 0 0 ! Cl _J _J z u. u. I >-< :i: a::: :i: a::: I-u _J I-UJ I-UJ u u I-~i a:::(.!) I= (.!) I-_J 0 u UJ z I w _J ::i z I-_J _J > UJ I ~~ (.!) ~ ::i < UJ Cij I "' 0 _J (.!) u. > u "' 0 "' ft. !ft. ft. ft. ft/s :min !min iln/Hr cfs :1n/Hr
c-_!_00.~_j_~.:Q !..!_ 40.0_L 20.:Q -?.21 B 9_R%:Q.;~E ,_22.~_22
100.01 2.0 10B5.0I 17.o 2.2· 9.0 10.0: 6.33 12.7• 7.7
i
0 "' "' 0 0 "' "' 0 ~ "' 0
cfs In/Hr cfs !In/Hr icfs
27.3 B.6 ~.304~.B6j_3~2_ --:;s:4 -s:s 17.3• 9.86· 19.7
t
I 0 0 "' "' 0
In/Hr cfs
11.15 39.6
t-11.15 22.3
0 0 0 0 0 !:
In/Hr lets
12.53
12.53
44.5
25.1
7/21/2014
dra.xls
Exhibit C-1
Culvert
Culvert Desian Criteria
Culvert Description Circular
Pipe No.
(2) 18" HOPE [Dia. (ft.) Pioes n
1.50 2 0.014
Culvert Analvsis Calculations
Total Flow per Critical Normal
Design Flow Pipe Depth(ft.) Depth
Storm (cfs) lets) de (ft.)
2 12.70 6.35 0.95 0.93
5 15.40 7.70 1.10 1.07
10 17.30 8.65 1.15 1.18
25 19.70 9.85 1.20 1.50
50 22.30 11.15 1.25 1.50
100 25.10 12.55 1.35 1.50
EXHIBIT C-2
CULVERT ANALYSIS
Duck Haven Phase 6 -Canvas Back Cove Culvert
Invert Outlet Culvert
Elev. (Eli) Elev. (ELo) Length
(ft.) (ft_) (ft_)
278.73 278.35 45.00
INLET CONTROL
H\Nl/D H\NI ELhi
0.99 1.48 280.21
1.11 1.66 280.39
1.20 1.80 280.53
1.34 2.01 280.74
1.51 2.27 281 .00
1.72 2.58 281 .31
ELhi Y-Top of Road / ELho ~==i~===---~~ _/ ~-----=~ EL1 Proposed Culvert "'----
ELo
Outfall Channel Desian Criteria
Top Lt. Side Rt. Side Bottom
Slope of Slope Slope Slope \Nldth n
(ft/fl) Road ke I (ft/fl\ 1?:1\ 1?:1\ lft.\
0.0084 282.69 0.50 I 0.0100 4.00 4.00 0.00 0.024
HEADWATER CALCULATIONS Control Type Outlet
OUTLET CONTROL
TW de (de+ 0)/2 ho H ELho
0.92 0.95 1.23 1.23 0.49 280.07
0.99 1.10 1.30 1.30 0.72 280.37
1.04 1.15 1.33 1.33 0.91 280.58
1.10 1.20 1.35 1.35 1.18 280.88
1.14 1.25 1.38 1.38 1.51 281.24
1.19 1.35 1.43 1.43 1.92 281.69
HW of
Elev. Control
280.21 Inlet
280.39 Inlet
280.58 Outlet
280.88 Outlet
281 .24 Outlet
281.69 Outlet
Velocity
(fos\
5.51
5.71
5.95
6.50
7.09
7.49
Freeboard
lft.\
2.48
2.30
2.11
1.81
1.45
1.00
7/21/2014
culvert 1.xls
Exhibit C-2
Item# I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
·--~.
Duck Haven 6 Preliminary Estimate
MBESI PROJ #: 1062-0042
Engineer's Opinion of Probable Construction Costs
July 20, 2014
Description Unit Quantity Unit Price
Paving Construction
Site Preparation (includes clearing & grubbing) Ac. 1.50 $1,500.00
Earthwork (Excavation and Embankment for Public ROW, L.S. 1,200 $7.50 Common Area and Lots)
6" Lime Stabilized Subgrade (6% by weight) S.Y. 1,75 1 $4.00
6" Crushed Stone Base S.Y. 1,532 $10.50
2" HMAC Pavement S.Y. 1,210 $11.50
Paving Subtotal
n· S t Ct ti ramage 1ys em ons rue on
18" RCP Pipe, (ASTM C-76, CL ill) (Structural Backfill) L.F. 84 $55.00
Rock Rip Rap S.Y. 25 $40.00
Safety End Treatment for 18" RCP EACH 4 $900.00
Drainage System Subtotal
vv t s t c t ti a er 1vs em ons rue on
6" PVC, C909 Cl 200, Water Line L.F. 425 $25.00
6" M.J. Gate Valve EACH 1 $900.00
6" M.J. Anchor Coupling EACH 1 $350.00
6" M.J. Bend , EACH 4 $250.00
Fire Hydrant Assembly EACH 1 $3 ,600.00
Blow-off Assembly EACH 1 $1,000.00
Water Service, 1.5" type K Copper, long side(> 20') EACH 1 $1 500.00
Water System Subtotal I
Erosion Control Construction
Erosion Control Plan & Sedimentation Control (per Item L.S. 1 $4,000.00 106) (includes monitoring. record keeping. and cleanup)
Grass Seeding SY 4,250 $0.48
Headwall Protection EACH 2 $200.00
Entrance/Exit EACH 1 $1 500.00
Erosion Control Subtotal
Construction Cost l
Total
$2,250.00
$9 ,000.00
$7,004.00
$16,086.00
$13,915.00
$48,255
$4,620.00
$1 ,000.00
$3 ,600.00
$9,220
$10,625.00
$900.00
$350.00
$1 ,000.00
$3,600.00
$1,000.00
$1,500.00
$18,975
$4,000.00
$2,040.00
$400.00
$1,500.00
$7,940
$84,390
The above construction estimate is based on the engineer's preliminary opinion of probable construction costs. This
estimate constitutes our best judgment at this time. Please note that the engineer does not have any control over contractor
or supplier workloads and the degree to which inflation may affect project costs. between now and the bid date. During
construction, additional features may become apparent as the work progresses, which will result in an increase in cost.
1 of2
_ ........ , .... ,,,,
,..,..... t. OF I \\ ; ,, ..,:.. ......... .f!.;-\ t
P '::i •• •••• /L ··:-:j.J" l1 ,,, * . l:"~r::,7 . . 'J I' .... '·"*; ./# ·k : ·~ ... ~ f ........................... : .... ~ ~.lffFERY L. f-!OBf:FHSON/: ·,-···: ........................... ""
, ""' ... 94745 ... ,,; .. , ·f. . • ... ;;.-~"!'" fl O~·. l../,c·"'N···f.\l ,.• //V " ,._~ • r:: I :;-,.-• '"}4-V -'• ,, <._•.s'S< ... ••:,"ci;-.:"T \\ IONA\..~~;-..:-''''-''"" .....
WATER REPORT
FOR
Duck Haven Subdivision
Phase 6
Brazos County, Texas
JULY2014
MBESI# 1062-0042
Im McCLURE & BROWNE ENGINEERING/SURVEYING, INC. ~ ;B 1008 Woodcreek Dr .. Suite 103 · College Station. Tx. 77845 · (979) 693-3838 Engineer Reg. No. F-458
Survey Reg. No. 101033-00
WATER SYSTEM ANALYSIS
for
DUCK HA VEN PHASE 6
General Information
Anticipated land use: Residential
Anticipated number of lots: 3 lots
Notes on surrounding development: Thi s development is located near the existing Phase
3 of Duck Haven in South Brazos County.
Water System Analysis
Primary water supply line: Existing 8" line on Canvasback Cove
PIPE2000 (Kentucky Pipe etwork Model)
6.0 gpd (all lots combined)
Software model:
Average daily flow:
Estimated fire demand: 1,000 gpm (at Junction J-12)
Pipe material:
Max. Velocity (fps)
Conclusion:
Applicable Exhibits:
Exhibit A
Exhibit B
Exhibit C
PVC (C909)
Desi ned I Re uirement I Notes
82.12 20 min i Fire flow conditions (J-2)
6.45 12 (max) Fire po~ conditions (P-1 )
The proposed water system exceeds the requirements of TCEQ
and the City of College Station
Schematic Water System Layout
Static Flow Model Output
Fi re Flow Model Output
Duck Haven, Phase 6
MBESI #10620042
...
\
=~ ----J
\
)
Ex.\ 8" Vf/L
I ~
./ /' ~ -........~) )
I / --(l Y I
./
l
I
) " ~ ~ <v
_.../
I
/
(
/
\ ,,,---I
/
)
I I I I I I
r
--
)
......... -2ao_
~.m'R LIN8 Jal'
EXH IBIT 8-1
Exhibit B
Static Flow Conditions
********** K Y P I P E 5 * * * * * * * * * *
*
*
*
Pipe Network Modeling Software
Copyrighted by KYPIPE LLC
Version 5 -February 2010
*
*
*
*
*
*****************************
Date & Time: Mon Jul 21 11:21:26 2014
Master File : f:\1062 -clarke & wyndham inc\0042 -duck haven phase 6\docs\water model
stat.kyp\water model stat.P2K
************************************************
S U M M A R Y 0 F 0 R I G I N A L D A T A
************************************************
U N I T S S P E C I F I E D
FLOWRATE
HEAD (HGL) ......... .
gallons/minute
feet
PRESSURE ........... . psig
PIPELINE D A T A
STATUS CODE: XX -CLOSED PIPE CV -CHECK VALVE
NODE NAMES LENGTH DIAMETER ROUGHNESS MINOR P I P E
N A M E #1 #2 (ft) (in) COEFF. LOSS COEFF.
P-1 VP-1 J -1
P-2 J -1 J-2
P U M P/L 0 S S E L E M E N T D A
THERE IS A DEVICE AT NODE VP-1
HEAD FLOWRATE
(ft) (gpm)
203.77 0.00
181.15 1500.00
122 .13 3000.00
N 0 D E D A T A
NODE
NAME
J-1
J -2
NODE
TITLE
EXTERNAL
DEMAND
(gpm)
0 .00
11. 25
84 .00
530 .00
T A
DESCRIBED BY
EFFICIENCY
(%)
75 .00
75.00
75 .00
JUNCTION
ELEVATION
(ft)
283 .00
284 .00
8.00 140 .0000
6 .00 140.0000
THE FOLLOWING DATA:
EXTERNAL
GRADE
(ft)
0 .00
0 .00
(ID= 1)
VP-1 282 .00 282 .00
OUTPUT 0 P T I 0 N D A T A
OUTPUT SELECTION : ALL RESULTS ARE I NCLUDED IN THE TABULATED OUTPUT
MAXIMUM AND MI NIMUM PRESSURES 1
MAXIMUM AND MINIMUM VELOCITIES 1
MAXIMUM AND MINIMUM HEAD LOSS/1000 1
S Y S T E M C 0 N F I G U R A T I 0 N
NUMBER OF PIPES ................... (p) 2
NUMBER OF END NODES ............... (j) 2
NUMBER OF PRIMARY LOOPS ........... (1) 0
NUMBER OF SUPPLY NODES ............ (f) 1
NUMBER OF SUPPLY ZONES ............ (z) 1
Case : 0
RESULTS OBTAINED AFTER 3 TRIALS : ACCURACY 0 .00000
S I M U L A T I 0 N D E S C R I P T I 0 N (L A B E L)
p I p E L I N E R E s U L T s
STATUS CODE : xx -CLOSED PIPE CV -CHECK VALVE
p I p E NODE NUMBERS FLOWRATE HEAD MINOR LINE HL+ML/ HL/
N A M E #1 #2 LOSS LOSS VELO . 1000 1000
(gpm) (ft) (ft) (ft/s) (ft/ft) (ft/ft)
-----------------------------------------------------------------------------------------
P-1 VP-1 J -1 11. 25 0.00 0 .00 0 .07 0 .00 0 .00
P-2 J -1 J -2 11. 25 0 .01 0 .00 0 .13 0 .02 0 .02
p U M P/L 0 S s E L E M E N T R E s U L T s
INLET OUTLET PUMP EFFIC-USEFUL INCREMTL TOTAL #PUMPS #PUMPS
NPSH
NAME FLOWRATE HEAD HEAD HEAD ENCY POWER COST COST PARALLEL SERIES
Avail.
(gpm) (ft) (ft) (ft) (%) (Hp) ($) ($)
(ft)
VP-1 11. 25 0.00 203. 77 203.8 75.00 0 . 0 .0 0.0 ** ** 33 .2
N 0 D E R E s u L T s
NODE NODE EXTERNAL HYDRAULIC NODE PRESSURE NODE
NAME TITLE DEMAND GRADE ELEVATION HEAD PRESSURE
(gpm) (ft) (ft) (ft) (psi) ------------------------------------------------------------------------------
J-1
J -2
VP-1
0 .00
11. 25
M A X I M U M A N D M I N I M U M
P R E S S U R E S
JUNCTION
NUMBER
VP -1
MAXIMUM
PRESSURES
(psi)
88 .30
V E L 0 C I T I E S
PIPE
NUMBER
P-2
MAXIMUM
VELOCITY
(ft/s)
0 .13
H L + M L I 1 0 0 0
PIPE
NUMBER
P-2
H L I 1 0 0 0
PIPE
NUMBER
P-2
MAXIMUM
HL+ML/1000
(ft/ft)
0 .02
MAXIMUM
HL/1000
(ft/ft)
0 .02
485 .77
485 .76
485 .77
V A L U E S
JUNCTION
NUMBER
J-2
PIPE
NUMBER
P-1
PIPE
NUMBER
P-1
PIPE
NUMBER
P-1
283 .00
284 .00
282 .00
MINIMUM
PRESSURES
(psi)
87.43
MINIMUM
VELOCITY
(ft/s)
0.07
MINIMUM
HL+ML/1000
(ft/ft)
0.00
MINIMUM
HL/1000
(ft/ft)
0.00
S U M M A R Y 0 F I N F L 0 W S A N D OUTFLOWS
(+) INFLOWS INTO THE SYSTEM FROM SUPPLY NODES
(-) OUTFLOWS FROM THE SYSTEM INTO SUPPLY NODES
NODE
NAME
VP-1
NET SYSTEM INFLOW
NET SYSTEM OUTFLOW
NET SYSTEM DEMAND
FLOWRATE
(gpm)
11 . 25
11 . 25
0 .00
11. 25
NODE
TITLE
***** HYDRAULIC ANALYSIS COMPLETED *****
202 . 77
201.76
203.77
87 .87
87 .43
88 .30
Exhibit C
Fire Flow Conditions
KYPIPE5
Pipe Network Modeling Software
Copyrighted by KYPIPE LLC
Version 5 -February 2010
Date & Time: Mon Jul 21 11 :24 :04 2014
Master File f :\1062 -clarke & wyndham inc\0042 -duck haven phase 6\docs\water model fire .KYP\water model
fire .P2K
S U M M A R Y 0 F 0 R I G I N A L
U N I T S S P E C I F I E D
FLOWRATE
HEAD (HGL) ......... .
gallons/minute
feet
PRESSURE ........... . psig
P I P E L I N E DAT A
STATUS CODE : XX -CLOSED PIPE CV -CHECK VALVE
D A T A
NODE NAMES LENGTH DIAMETER ROUGHNESS MINOR P I P E
N A M E #1 #2 (ft) (in) COEFF . LOSS COEFF.
P-1 VP-1 J-1
P-2 J -1 J-2
P U M P/L 0 S S E L E M E N T D A
THERE IS A DEVICE AT NODE VP-1
HEAD FLOWRATE
(ft) (gpm)
203 .77 0.00
181 .15 1500.00
122 .13 3000.00
N 0 D E D A T A
NODE
NAME
J-1
J-2
VP-1
OUTPUT
NODE
TITLE
0 P T I 0 N
EXTERNAL
DEMAND
(gpm)
1000.00
11. 25
D A T A
84.00
530 .00
TA
DESCRIBED BY
EFFICI ENCY
(%)
75 .00
75 .00
75 .00
JUNCTION
ELEVATION
(ft)
283.00
284 .00
282.00
8.00 140.0000
6.00 140.0000
THE FOLLOWING DATA :
EXTERNAL
GRADE
(ft)
282 .00
OUTPUT SELECTION: ALL RESULTS ARE INCLUDED IN THE TABULATED OUTPUT
0.00
0.00
(ID= 1)
MAXIMUM AND MINIMUM PRESSURES
MAXIMUM AND MINIMUM VELOCITIES
MAXIMUM AND MINIMUM HEAD LOSS/1000
S Y S T E M C 0 N f I G U R A T I 0 N
NUMBER Of PIPES ................... (p) 2
NUMBER Of END NODES ............... (j) 2
NUMBER Of PRIMARY LOOPS ........... ( 1) 0
NUMBER Of SUPPLY NODES ............ (f)
NUMBER Of SUPPLY ZONES ............ (z)
Case: 0
RESULTS OBTAINED AfTER 3 TRIALS : ACCURACY 0.00000
S I M U L A T I 0 N D E S C R I P T I 0 N (L A B E L)
P I P E L I N E R E S U L T S
STATUS CODE : XX -CLOS ED PI PE
P I P E
N A M E
P-1
P-2
NODE NUMBERS
#1 #2
VP-1 J -1
J -1 J -2
P U M P/L 0 S s E L E M E N T
INLET
NAME fLOWRATE HEAD
(gpm) (ft)
CV -CHECK VALVE
fLOWRATE
(gpm)
1011 . 25
11 . 25
R E s u L T s
OUTLET PUMP
HEAD HEAD
(ft) (ft)
HEAD
LOSS
(ft)
1. 37
0.01
EfFIC-
ENCY
(%)
MINOR
LOSS
(ft)
0.00
0.00
USEfUL
POWER
(Hp)
LINE HL+ML/
VELO . 1000
(ft/s) (f t/f t)
6. 45 16 .26
0 .13 0 .02
INCREMTL TOTAL
COST COST
($) ($)
HL/
1000
(ft/ft)
16. 26
0.02
#PUMPS
PARALLEL
#PUMPS NPSH
SERIES Avail.
(ft)
--------------------------------------------------------------------------------------------------------
VP-1 1011. 25 0.00 192 .87 192.9 75.00 0 . 0 .0 0.0 33.2
N 0 D E R E s u L T s
NODE NODE EXTERNAL HYDRAULIC NODE PRESSURE NODE
NAME TITLE DEMAND GRADE ELEVATION HEAD PRESSURE
(gpm) (ft) (ft) (ft) (psi)
J-1 1000.00 473 .51 283 .00 190 .51 82 .55
J-2 11. 25 473 .50 284 .00 189 .50 82 .12
VP-1 474 .87 282 .00 192 .87 83.58
M A X I M U M AN D M I N I M U M V A L U E S
p R E S S U R E S
JUNCTION MAX IMUM JUNCTION MINIMUM
NUMBER PRESSURES NUMBER PRESSURES
(psi ) (psi )
------------------------------------------VP-1 83 .58 J -2 82 .12
V E L 0 c I T I E s
PIPE MAXIMUM PIPE MINIMUM
NUMBER VELOCITY NUMBER VELOCITY
(ft/s) (ft/s)
P-1 6 . 4 5
H L + M L 1 0 0 0
PIPE
NUMBER
P-1
HL 1000
PIPE
NUMBER
P-1
MAXIMUM
HL+ML/1000
(ft/ft}
16.26
MAXIMUM
HL/1000
(ft/ft}
16.26
P-2
PIPE
NUMBER
P-2
PIPE
NUMBER
P-2
0 .13
MINIMUM
HL+ML/1000
(ft/ft}
0.02
MINIMUM
HL/1000
(ft/ft}
0.02
S U M M A R Y 0 F INFLOWS AN D 0 U T F L 0 W S
(+} INFLOWS INTO THE SYSTEM FROM SUPPLY NODES
(-} OUTFLOWS FROM THE SYSTEM INTO SUPPLY NODES
NODE
NAME
FLOWRATE
(gpm}
VP-1 1011 .25
NET SYSTEM INFLOW 1011.25
NET SYSTEM OUTFLOW 0.00
NET SYSTEM DEMAND 1011.25
NODE
TITLE
***** HYDRAULIC ANALYSIS COMPLETED *****
FOR OFFICE USE ONLY
CASE NO.: /~ -J 7)p
CITY or Cm.LEGE STATION
Home o/Texas A&M University•
DATE SUBMITTED: 0 \0 I\.., 11 y
TIME: g ". L-\ <5
STAFF: --+fO'~-------
FINAL PLAT APPLICATION
(Check one) D Minor
($700)
D Amending
($700)
~Final
($932)
D Vacating
($932)
0Replat
($932)
Is this plat in the ET J? [8J Yes D No Is this plat Commercial D or Residential [g]
MINIMUM SUBMITTAL REQUIREMENTS:
$700-$932 Final Plat Application Fee (see above).
$233 Waiver Request to Subdivision Regulations Fee (if applicable).
v"l:8J
D
D $600 (minimum) Development Permit Application I Public Infrastructure Review and Inspection Fee. Fee is
1 % of acceptable Engineer's Estimate for public infrastructure, $600 minimum (if fee is > $600, the balance is
due prior to the issuance of any plans or development permit).
Application completed in full. This application form provided by the City of College Station must be used and
may not be adjusted or altered. Please attach pages if additional information is provided.
Six (6) folded copies of plat. (A signed mylar original must be submitted after approval.)
Two (2) copies of the grading, drainage, and erosion control plans with supporting drainage report.
Two (2) copies of the Public infrastructure plans and supporting documents (if applicable).
Copy of original deed restrictions/covenants for replats (if applicable).
v-'[8]
Title report for property current within ninety (90) days or accompanied by a Nothing Further Certificate
current within ninety (90) days. The report must include applicable information such as ownership, liens,
encumbrances, etc.
Paid tax certificates from City of College Station, Brazos County and College Station l.S.D.
~ The attached Final Plat checklist with all items checked off or a brief explanation as to why they are not.
NOTE: A mylar of the approved preliminary plan must be on file before a final plat application will be considered
complete. If the mylar is submitted with the final plat application, it shall be considered a submittal for the
preliminary plan project and processed and reviewed as such. Until the mylar has been confirmed by staff
to be correct, the final plat application will be considered incomplete.
Date of Optional Preapplication or Stormwater Management Conference _N._l'A ______________ _
NAME OF PROJECT Duck Haven Phase 6
--------------------------------~
ADDRESS South of Retriever Run
SPECIFIED LOCATION OF PROPOSED PLAT:
Jsouth of Retriever Run
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary contact for the project):
Name Travis Martinek E-mail travis@clarkewyndham.com
Street Address 3608 East 29th Street, Suite 100
City Bryan State Texas Zip Code 77802 ------
Phone Number (979) 846-4384 Fax Number (979) 846-1461
---------------~
Revised 4/14 Page 1 of 9
PROPERTY OWNER'S INFORMA rlON (All owners must be identified. Please attach an additional sheet for multiple
owners):
Name Duck Haven, Ltd. E-mail travis@clarkewyndham.com
Street Address 3608 East 29th Street, Suite 100
City Bryan State Texas Zip Code _7_78_0_2 ___ _
Phone Number (979) 846-4384 Fax Number (979) 846-1461
~----------------
ARCHITECT OR ENGINEER'S INFORMATION:
Name McClure & Browne Engineering/Surveying, Inc. E-mail jeffr@mcclurebrowne.com
Street Address 1008 Woodcreek Drive, Suite 103
City College Station State Texas Zip Code 77845 -------
Phone Number (979) 693-3838 Fax Number (979) 693-2554
~----------------
Do any deed restrictions or covenants exist for this property? ~Yes 0 No
Is there a temporary blanket easement on this property? If so, please provide the Volume __ N_Vi_f' __ and Page No. _N_'.IA_
Total No. of Lots 3 ------R-0-W Acreage _0_.4_9_4 ____ _ Total Acreage _1_0._0_2_1 _______ _
Existing Use _\!'._a_ca_n_t ___________ _ Proposed Use Single-Family Residential
Number of Lots By Zoning District NIA NIA NIA NIA NIA NIA
Average Acreage Of Each Residential Lot By Zoning District:
NIA NIA NIA I NIA NIA NIA NIA NIA
Floodplain Acreage 0. 000 ------------------------------------
Is there Special Flood Hazard Area (Zone A or Zone AE on FEMA FIRM panels) on the property? I Yes IX No
This information is necessary to help staff identify the appropriate standards to review the application and will be used to
help determine if the application qualifies for vesting to a previous ordinance. Notwithstanding any assertion made,
vesting is limited to that which is provided in Chapter 245 of the Texas Local Government Code or other applicable law.
Is this application a continuation of a project that has received prior City platting approval(s) and you are requesting the
application be reviewed under previous ordinance as applicable?
fX Yes
I No
If yes, provide information regarding the first approved application and any related subsequent applications (provide
additional sheets if necessary):
Project Name: Duck Haven
City Project Number (if known): Unknown
Date I Timeframe when submitted: 2000
Revised 4/14 Page 2 of 9
A statement addressing any differences between the Final Plat and Preliminary Plan (if applicable):
NIA
Requested waiver to subdivision regulations and reason for same (if applicable):
NIA
Regarding the waiver request, explain how:
1. There are special circumstances or cond itions affecting the land involved such that strict application of the
subdivision regulations will deprive the applicant of the reasonable use of his land .
NIA
2. The waiver is necessary for the preservation and enjoyment of a substantial property right of the applicant.
NIA
3. The granting of the waiver will not be detrimental to the public health, safety, or welfare , or injurious to other
. property in the area, or to the City in administering subdivision regulations.
NIA
4. The granting of the waiver will not have the effect of preventing the orderly subdivision of other land in the area in
accordance with the provisions of the Unified Development Ordinance.
NIA
Fee in lieu of sidewalk construction is being requested because of the following condition (if applicable):
1. I An alternative pedestrian way or multi-use path has been or will be provided outside the right-of-way;
2. I The presence of unique or unusual topographic, vegetative, or other natural conditions exist so that strict
adherence to the sidewalk requirements of the UDO is not physically feasible or is not in keeping with the
purposes and goals of the UDO or the City's comprehensive Plan ;
3. I A capital improvement project is imminent that will include construction of the required sidewalk. Imminent shall
mean the project is funded or projected to commence within twelve (12) months;
4. I Existing streets constructed to rural section that are not identified on the Thoroughfare Plan with an estate I
rural context;
5. I When a sidewalk is required along a street where a multi-use path is shown on the Bicycle, Pedestrian, and
Greenways Master Plan;
Revised 4/14 Page 3 of 9
6. I The proposed development is within an older residential subdivision meeting the criteria in Platting and
Replatting within Older Residential Subdivisions Section of the UDO; or
7. I The proposed development contains frontage on a Freeway I Expressway as designated by Map 6.6,
Thoroughfare Plan -Functional Classification, in the City's Comprehensive Plan .
Detailed explanation of condition identified above:
N/A
NOTE: A waiver to the sidewalk requirements and fee in lieu of sidewalk construction shall not be considered at the
same time by the Planning & Zoning Commission.
Total Linear Footage of
Proposed Public:
___ Streets
Sidewalks ---
---Sanitary Sewer Lines
Water Lines ---
Channels ---
___ Storm Sewers
Bike Lanes I Paths ---
Parkland Dedication due prior to filing the Final Plat:
ACREAGE:
___ No. of acres to be dedicated + $ ____ development fee
___ No. of acres in floodplain
No. of acres in detention ---
---No. of acres in greenways
OR
FEE IN LIEU OF LAND:
No. of SF Dwelling Units X $ = $ ------------
(date) Approved by Parks & Recreation Advisory Board ----
NOTE: DIGITAL COPY OF PLAT MUST BE SUBMITTED PRIOR TO FILING.
The applicant has prepared this application and certifies that the facts stated herein and exhibits attached hereto are
true, correct, and complete. IF THIS APPL/CATION IS FILED BY ANYONE OTHER THAN THE OWNER OF THE
PROPERTY, this application must be accompanied by a power of attorney statement from the owner. If there is more
than one owner, all owners must sign the application or the power of attorney. If the owner is a company, the application
must be accompanied by proof of authority for the company's representative to sign the application on its behalf LIEN
HOLDERS identified in the title report are also considered owners and the appropriate signatures must be provided as
described above.
Signature anW-Date ' I
Revised 4/14 Page 4 of 9
~ . . .
Existing
[8]
[8]
[8]
FINAL PLAT MINIMUM REQUIREMENTS
(ALL CITY ORDINANCES MUST BE MET)
INCLUDING BUT NOT LIMITED TO THE FOLLOWING:
(Requirements based on field survey and marked by monuments and markers.)
[8] Drawn on 24" x 36" sheet to scale of 100' per inch.
[8] Vicinity map which includes enough of surrounding area to show general location of subject property in
relationship to College Station and its City Limits. No scale required but include north arrow.
[8] Title Block with the following information:
[8] Name and address of subdivider, recorded owner, planner, engineer and surveyor.
[8] Proposed name of subdivision. (Subdivision name & street names will be approved through Brazos
County 911.)
[8] Date of preparation.
[8] Engineer's scale in feet.
[8] Total area intended to be developed.
[8] North Arrow.
[8] Subdivision boundary indicated by heavy lines.
[8] If more than 1 sheet, an inde_x sheet showing entire subdivision at a scale of 500 feet per inch or
larger.
[8] All applicable certifications based on the type of final plat.
[8] Ownership and Dedication
[8] Surveyor and/or Engineer
[8] City Engineer (and City Planner, if a minor plat)
[8] Planning and Zoning Commission (delete if minor plat)
[8] Brazos County Clerk
[8] Brazos County Commissioners Court Approval (ET J Plats only)
[8] If submitting a replat where there are existing improvements, submit a survey of the subject property
showing the improvements to ensure that no encroachments will be created.
[8] If using private septic systems, add a general note on the plat that no private sewage facility may be
installed on any lot in this subdivision without the issuance of a license by the Brazos County
Health Unit under the provisions of the private facility regulations adopted by the Commissioner's
Court of Brazos County, pursuant to the provisions of Section 21 .084 of the Texas Water Code.
[8] Location of the 100-Year Floodplain and floodway, if applicable, according to the most recent available
data.
[8] Lot corner markers and survey monuments (by symbol) and clearly tied to basic survey data.
[8] Matches the approved preliminary plan or qualifies as minor amendments (UDO Section 3.3.E.2).
[g] The location and description with accurate dimensions, bearings or deflection angles and radii, area, center
angle, degree of curvature, tangent distance and length of all curves for all of the
following: (Show existing items that are intersecting or contiguous with the boundary of or forming a
boundary with the subdivision, as well as, those within the subdivision).
Proposed
[8]
[8]
[8]
Streets. Continuous or end in a cul-de-sac, stubbed out streets must end into a temp
turn around unless they are shorter than 100 feet.
Public and private R.O.W. locations and widths. (All existing and proposed RO.W's
sufficient to meet Thoroughfare Plan.)
Street offsets and/or intersection angles meet ordinance.
Revised 4/14 Page 8 of 9
I f • t
Existing
lg]
lg]
lg]
lg]
Proposed
lg]
lg]
lg]
lg]
Alleys.
Easements.
A number or letter to identify each lot or site and each block (numbered sequentially).
Parkland dedication/greenbelt area/park linkages. All proposed dedications must be
reviewed by the Parks and Recreation Advisory Board and documentation of their
recommendation provided prior to being scheduled for P&Z Commission consideration.
lg] Construction documents for all public infrastructure drawn on 24" x 36" sheets and properly
sealed by a Licensed Texas Professional Eng ineer that include the following :
lg] Street, alley and sidewalk plans, profiles and sections. One sheet must show the overall
street, alley and/or sidewalk layout of the subdivision. (may be combined with other
utilities).
lg] Sewer Design Report.
lg] Sanitary sewer plan and profile showing depth and grades. One sheet must show the
overa ll sewer layout of the subdivision . (Utilities of sufficient size/depth to meet the utility
master plan and any future growth areas.)
lg] Water Design Report and/or Fire Flow Report.
lg] Water line plan showing fire hydrants, valves, etc. with plan and profile lines showing
depth and grades. One sheet must show the overall water layout of the subd ivision.
(Utilities of sufficient size/depth to meet the utility master plan and any future growth
areas.)
lg] Storm drainage system plan with contours, street profile, inlets, storm sewer and
drainage channels, with profiles and sections. Drainage and runoff areas, and runoff
based on 5, 10, 25, 50 and 100 year rain intensity. Detailed drainage structure design ,
channel lining design & detention if used. One sheet must show the overall drainage
layout of the subdivision.
[81 Detailed cost estimates for all public infrastructure listed above sealed by Texas P.E.
[81 Letter of completion for public infrastructure or guarantee I surety in accordance with UDO
Section 8.6.
[81 Drainage Report with a Technical Design Summary.
[81 Erosion Control Plan (must be included in construction plans).
[81 All off-site easements necessary for infrastructure construction must be shown on the final plat with a
v·olume and page listed to indicate where the separate instrument easements were fi led.
Separate instrument easements must be provided in recordable form to the City prior to being scheduled
for P&Z Commission consideration.
lg] Are there impact fees associated with this development? D Yes ~ No
Impact fees must be paid prior to building permit.
~ Will any construction occur in TxDOT rights-of-way? D Yes [81 No
If yes, TxDOT permit must be submitted along with the construction documents.
NOTE: 1. We will be requesting the corrected Final Plat to be submitted in digital form if available prior to filing
the plat at the Courthouse.
2. If the construction area is greater than 5 acres, EPA Notice of Intent (NOi) must be submitted prior to
issuance of a development permit.
Print Form
Revised 4/14 Page 9 of 9
DRAINAGE REPORT
FOR
Duck Haven Subdivision
Phase 6
Brazos County, Texas
JULY2014
REVISED AUGUST 2014
MBESI# 1062-0042
Im McC L UR E & BROWNE ENGINE ERING/SUR VEYING, INC. ~;II 1008 Woodcreek Dr .. Suite 103 ·College Station. Tx. 77845 · (979) 693-3838 Engineer Reg. No. F-458
Survey Reg. No. 101033-00
CrTY or C OLLEGE STATION
Home of Texas A&M University•
FOR OFFll/}J:E ~
CASE NO.: __.Ct-±~(.,..,~="'"-..,..----,.--
DATE SUBMITTED:~ -l<("-(q
TIME: LF 3:&'
STAFF: CO
PLANNING & DEVELOPMENT SERVICES
TRANSMITTAL LETTER
Please check one of the options below to clearly define the purpose of your submittal.
D New Project Submittal
D Incomplete Project Submittal -documents needed to complete an application. Case No.:
~ Existing Project Submittal. Case No.:
Project Name Duck Haven 6
Contact Name Jeff Robertson ~~~~~~~~~~~~~~~-Phone Number 693-3838 ~~~~~~~~~~~~~~
We are transmitting the following for Planning & Development Services to review and comment (check all that apply):
D Comprehensive Plan Amendment
D Rezoning Application
D Conditional Use Permit
D Preliminary Plan
D Final Plat
D Development Plat
D Site Plan
D Special District Site Plan
D Special District Building I Sign
D Landscape Plan
D Non-Residential Architectural Standards
D Irrigation Plan
D Variance Request
D Development Permit
D Development Exaction Appeal
D FEMA CLOMA/CLOMR/LOMA/LOMR
D Grading Plan
D Other -Please specify below
INFRASTRUCTURE AND ENGINEERING DOCUMENTS
All infrastructure documents must be submitted as a complete set.
The following are included in the complete set:
D Comprehensive Plan Amendment D Waterline Construction Documents
D TxDOT Driveway Permit D Sewerline Construction Documents
D TxDOT Utility Permit D Street Construction Documents
~ Drainage Letter or Report D Easement Application
D Fire Flow Analysis D Other -Please specify
Special Instructions:
10/10 Print Form
Duck Haven Subdivision, Phase 6
Stormwater Management Technical Design Summary Report
MEES! No . 10620042
PART 1 -Executive Summary Report
Section l -Contact Information
Project Designer: McClure and Browne Engin eering and Surveying, Inc.
l 008 Woodcreek Drive, Suite l 03
College Station, TX 77845
979-693-3838
Project Developer: Smiling Mall ard Development, Ltd.
3608 East 29th Street
Bryan, Texas 77802
Section 2 -General Inform ation and Pro ject Location
Thi s development is the 6th phase of a multi phase subdivision. Phase 6 consists of 3 lots. The phase is
located in the Duck Haven Village which is along FM 2154 (We llborn Road). Phase 6 is located at the
intersection of Retriever Run and Canvasback Cove. Thi s phase of the subdivision has been analyzed as
part of the Phase 3 Drainage Report submitted in September, 2006. The development is entirely located
within the Brazos County limits.
The project site is in the Peach Creek watershed. According to the F lood Insurance Rate Maps for
Brazos County, Texas and incorporated area, Map N umber 4804 1C0375E effective May 16, 20 12; no
portion of this property is located in a 100-year flood hazard area.
Culvert pipe calculations are shown with thi s submittal.
The culverts and ditches peak runoffs were fo und using the Rational Method. A runoff coefficient (c) of
0.50 was used for residential areas since all the lots have an area greater than l acre. The culverts and
ditches were analyzed using Microsoft Excel spreadsheets which utilizes Manning's Equation for the
analysis.
Section 3 -Reference
Exhi bitA
Exhibit B
Exhib it C-1
Exhibit C-2
Technical Design Summary
Drainage Area Map
Drainage Area Calcul ations
Culvert Calculations
Drainage Report
Indian Lakes, Phase 18
Drainage Repo rt
EXHIBIT A
Technical Design Summary
Duck Haven Subdivision, Phase 6
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
The Cities of Bryan and College Station both require storm drainage design to follow these
Unified Stormwater Design Guidelines. Paragraph C2 of Section Ill (Administration) requ ires
submittal of a drainage report in support of the drainage plan (stormwater management plan)
proposed in connection with land development projects, both site projects and subdivisions.
That report may be submitted as a traditional prose report, complete with applicable maps,
graphs, tables and drawings, or it may take the form of a "Technical Design Summary". The
format and content for such a summary report shall be in substantial conformance with the
description in this Appendix to those Guidelines. In either format the report must answer the
questions (affirmative or negative) and provide, at minimum, the information prescribed in the
''Technical Design Summary" in this Appendix.
The Stormwater Management Technical Design Summary Report shall include several parts
as listed below. The information called for in each part must be provided as applicable. In
add ition to the requirements for the Executive Summary, this Appendix includes several
pages detailing the requirements for a Technical Design Summary Report as forms to be
completed. These are provided so that they may be copied and completed or scanned and
digitized . In addition , electronic vers ions of the report forms may be obtained from the City.
Requirements for the means (medium) of submittal are the same as for a conventional report
as detailed in Section 111 of these Guidelines.
Note: Part 1 -Executive Summary must accompany any drainage report
required to be provided in connection with any land development project,
regardless of the format chosen for said report.
Note: Parts 2 through 6 are to be provided via the forms provided in th is
Appendix. Brief statements should be included in the forms as requested,
but additional information should be attached as necessary.
Part 1 -Executive Summary Report
Part 2 -Project Administration
Part 3 -Project Characteristics
Part 4 -Drainage Concept and Design Parameters
Part 5 -Plans and Specifications
Part 6 -Conclusions and Attestation
STORMWATER MANAGEMENT TECHNICAL DESIGN SUMMARY REPORT
Part 1 -Executive Summary
This is to be a brief prose report that must address each of the seven areas listed below.
Ideally it will include one or more paragraphs about each item.
1. Name, address, and contact information of the engineer submitting the report, and
of the land owner and developer (or applicant if not the owner or developer). The
date of submittal should also be included .
2. Identification of the size and general nature of the proposed project, including any
proposed project phases. This paragraph should also include reference to
applications that are in process with either City: plat(s), site plans, zoning requests,
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 1 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revi sed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
or clearing/grading permits, as well as reference to any application numbers or
codes assigned by the City to such request.
3. The location of the project should be described. This should identify the Named
Regulatory Watershed(s) in which it is located, how the entire project area is
situated therein, whether the property straddles a watershed or basin divide, the
approximate acreage in each basin, and whether its position in the Watershed
dictates use of detention design. The approximate proportion of the property in the
city limits and within the ET J is to be identified, including whether the property
straddles city jurisdictional lines. If any portion of the property is in floodplains as
described in Flood Insurance Rate Maps published by FEMA that should be
disclosed.
4. The hydrologic characteristics of the property are to be described in broad terms:
existing land cover; how and where stormwater drains to and from neighboring
properties; ponds or wetland areas that tend to detain or store stormwater; existing
creeks, channels, and swales crossing or serving the property; all existing drainage
easements (or ROW) on the property, or on neighboring properties if they service
runoff to or from the property.
5. The general plan for managing stormwater in the entire project area must be
outlined to include the approximate size, and extent of use, of any of the following
features: storm drains coupled with streets; detention I retention facilities; buried
conveyance conduit independent of streets; swales or channels; bridges or culverts;
outfalls to principal watercourses or their tributaries; and treatment(s) of existing
watercourses. Also, any plans for reclaiming land within floodplain areas must be
outlined .
6. Coordination and permitting of stormwater matters must be addressed. This is to
include any specialized coordination that has occurred or is planned with other
entities (local, state, or federal). This may include agencies such as Brazos County
government, the Brazos River Authority, the Texas A&M University System, the
Texas Department of Transportation , the Texas Commission for Environmental
Quality, the US Army Corps of Engineers, the US Environmental Protection Agency,
et al. Mention must be made of any permits, agreements, or understandings that
pertain to the project.
7. Reference is to be made to the full drainage report (or the Technical Design
Summary Report) which the executive summary represents. The principal
elements of the main report (and its length), including any maps, drawings or
construction documents, should be itemized . An example statement might be:
"One __ -page drainage report dated one set of
construction drawings (_sheets) dated , and a
___ -page specifications document dated comprise
the drainage report for this project."
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 2 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revi sed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Start (Page 2. 1)
Enaineerina and Desian Professionals Information
Engineering Firm Name and Address: Jurisdiction
McClure & Browne Engineering/Surveying, Inc. City: Bryan
1008 Woodcreek Drive, Suite 103 x College Station
College Station, Texas 77845 Date of Submittal:
(979)693-3838
Lead Engineer's Name and Contact lnfo.(phone, e-mail , fax): Other:
Jeffery L. Robertson, P.E.
Supporting Engineering I Consulting Firm(s): Other contacts:
Developer I Owner I Applicant Information
Developer I Applicant Name and Address: Phone and e-mail:
Smiling Mallard Development, Ltd . (979) 846-4384
3608 East 29th Street
Bryan , Texas 77802
Property Owner(s) if not Developer I Applicant (&address): Phone and e-mail:
Project Identification
Development Name: Duck Haven, Phase 6
Is subject property a site project, a single-phase subdivision, or part of a multi-phase subdivision?
Multi-phase Subdivision If multi-phase, subject property is phase 6 of
Legal description of subject property (phase) or Project Area:
(see Section 11 , Paragraph B-3a)
Duck Haven, Phase 6
If subject property (phase) is second or later phase of a project, describe general status of all
earlier phases. For most recent earlier phase Include submittal and review dates.
The project is the 6th phase of a multi phase subdivision . At this time the first phases hcv
been built. The most recent phase submitted was Ph . 4 .
General Location of Project Area, or subject property (phase):
Project site is located near the intersection of Retriever Run and Canvasback Cove
in Brazos County, Texas.
In City Limits? Extraterritorial Jurisdiction (acreage):
Bryan: acres. Bryan: College Station: 10.02
College Station: acres. Acreage Outside ET J:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 3 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
e
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration Continued (page 2.2)
Project Identification (continued)
Roadways abutting or within Project Area or
subject property:
Retriever Run
Abutting tracts, platted land , or built
developments: Duck Haven Phase 4
Named Regulatory Watercourse(s) & Watershed(s): Tributary Basin(s):
Phase 6 is l ocated in the Peach Creek Watershed. The nearest tributary is Peach Creek S.
Tributary 7 .2 (See FEMA Map 48041C0375E).
Plat Information For Project or Subject Property (or Phase)
Preliminary Plat File#: ____ _ Final Plat File#: ______ Date: ____ _
Name: Pendi ng Appr oval Status and Vol/Pg: Pending Approval
If two plats, sec
Status:
Zoning Information For Project or Subject Property (or Phase)
Zoning Type: Exi sting or Proposed? Case Code: ------
Case Date ____ _ Status:
Zoning Type: Existing or Proposed? Case Code: ------
Case Date ____ _ Status:
Stormwater Management Planning For Project or Subject Property (or Phase)
STORMWATER DESIGN GUIDELINES
Effective February 2007
Participants:
Page 4 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration Continued (page 2.3)
Coordination For Project or Subject Property (or Phase)
Note: For any Coordination of stormwater matters indicated below, attach documentation
describing and substantiating any agreements, understandings, contracts, or approvals.
Non-jurisdiction
City Needed?
Yes No x
Coordination with
Brazos County
Needed?
Yes No x
Coordination with
TxDOT Needed?
Yes No_x_
Coordination with
TAMUS Needed?
Yes No_x_
Permits For Project or Subject Property (or Phase)
As to stormwater management, are permits required for the proposed work from any of the entities
listed below? If so, summarize status of efforts toward that ob'ective in s aces below.
Entity
US Army Crops of
Engineers
No x Yes
US Environmental
Protection Agency
No _x_ Ye s
Texas Commission on
Environmental Quality
No Yes_x _
Brazos River
Authority
No x Yes
Permitted or
Approved?
STORMWATER DESIGN GUIDELINES
Effective February 2007
Status of Actions (include dates)
A Stormwater Pollution Prevention Plan must be
impl emented prior to t he start of construction
according to TPDES General Permit No. TXRlSOOOO .
Page 5 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Property Characteristics Start (Page 3.1)
Nature and Scope of Proposed Work
Existing: Land proposed for development currently used, including extent of impervious cover?
Existing undeveloped land (Dense tree cover) . Existing impervious cover is
approxi mately O sf.
Site
Development
Project
(select all
applicable)
Subdivision
Development
Project
_x_ Construction of streets and utilities to serve on e or more platted lots.
__ Construction of streets and utilities to serve one or more proposed lots on
lands represented by pending plats.
Describe
Nature and
Size of
Proposed
Project
Site projects: building use(s), approximate floor space, impervious cover ratio.
Subdivisions: number of lots by general type of use, linear feet of streets and
drainage easements or ROW.
This phase of the subdivision includes 3 lots. The development
consi sts of approximately 475 LF of streets with 16 ' PUE on each
side of the streets ROW .
Is any work planned on land that is not platted
or on land for which platting is not pending?
x No Yes
FEMA Floodplains
Is any part of subject property abutting a Named Regulatory Watercourse
(Section 11, Paragraph 81) or a tributary thereof? No x Yes
Is any part of subject property in floodplain
area of a FEMA-regulated watercourse?
Encroachment(s)
into Floodplain
areas planned?
No x
No x
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 6 of 26
Yes Rate Map 48041C0375E
APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Continued (Page 3.2)
Hydrologic Attributes of Subject Property (or Phase)
Has an earlier hydrologic analysis been done for larger area including subject property?
Yes Reference the study (&date) here, and attach copy if not already in City files.
Duck Haven Subdivision; October, 2006 x --
Is the stormwater management plan for the property in substantial conformance with the
earlier study? Yes x No If not, explain how it differs.
No If subject property is not part of multi-phase project, describe stormwater management
plan for the property in Part 4. --If property is part of multi-phase project, provide overview of stormwater management plan
for Project Area here. In Part 4 describe how plan for subject property will comply
therewith.
Stormwater Detention has been provided for this phase with a
detention pond developed with a previ ous phase .
x No Yes Do existing topographic features on subject property store or detain runoff? ----Describe them (include approximate size , volume, outfall , model, etc).
Any known drainage or flooding problems in areas near subject property? x No Yes ----Identify:
Based on location of study property in a watershed, is Type 1 Detention (flood control) needed?
(see Table B-1 in Appendix B)
__ Detention is required. Need must be evaluated. __ Detention not required. --
What decision has been reached? By whom?
Det enti on study during Phase 3 .
If the need for How was determination made?
Type 1 Detention Detention was required and is provided for the e ntire must be evaluated: Duck Haven Subdivision. However, Phase 6 does not require
any additional detention.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 7 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Property Characteristics I Continued (Page 3.3)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Does subject property straddle a Watershed or Basin divide? _x_ No __ Yes If yes,
describe splits below. In Part 4 describe desiqn concept for handlinq th is.
-----Watershed or Basin Larger acreage Lessn• ~e -------------~-
------------Above-Project Areas(Section II , Paragraph 83-a)
Does Project Area (project or phase) receive ru noff from upland areas? __ No _x_ Yes
Size(s) of area(s) in acres: 1) 7 ·1 Ac 2) 4 · 0 Ac 3) 4)
Flow Characteristics (each instance) (overland sheet, shallow concentrated, recognizable
concentrated section(s), small creek (non-regulatory), regulatory Watercourse or tributary);
1) Upstream Drainage Area (Ex . Culvert) drains along the existing ditch
on the east side of Retriever Run. Overland and shallow concentrated.
2) Upstream area that drains to proposed Culvert #1. Overland and Shallow C~ncentrated.
Flow determination: Outline hydrologic methods and assumptions:
Rational Method used for flow determination.
Does storm runoff drain from public easements or ROW onto or across subject property?
__ No _x_ Yes If yes, describe facilities in easement or ROW:
Ex. culvert under Retriever Run drains to this phase within existing ROW.
Are changes in runoff characteristics subject to change in future? Explain
No. Existing facilities have been built and plat has been filed.
Conveyance Pathways (Section II , Paragraph C2)
Must runoff from study property drain across lower properties before reaching a Regulatory
Watercourse or tributary? No x Yes
Describe length and characteristics of each conveyance pathway(s). Include ownership of
property(ies).
Drainage must drain through drainage easement to existing detention pond.
It is a grass lined swale with 4 :1 side slopes. It 's within the HOA area and
Lot 3, Block 7.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 8 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~erty Characteristics I Continued (Page 3.4)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Conveyance Pathways (continued)
Do drainage If yes, for what part of length? 100 % Created by? _x_ plat, or
easements instrument. If instrument(s), describe their provisions. exist for any --
part of
pathway(s)?
No --x Yes --
Where runoff must cross lower properties, describe characteristics of abutting lower
property(ies). (Existing watercourses? Easement or Consent aquired?)
Pathway
Areas
Describe any built or improved drainage facilities existing near the property (culverts,
bridges, lined channels, buried condu it, swales, detention ponds, etc).
Nearby
Drainage Do any of these have hydrologic or hydraulic influence on proposed stormwater Facilities design? x No Yes If yes, explain: ----
STORMWATER DESIGN GUIDELINES
Effective Febru ary 2007
Page 9 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
AP PE NDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce12t and Design Parameters I Start (Page 4.1)
Stormwater Management Concept
Discharge(s) From Upland Area(s)
If runoff is to be received from upland areas, what design drainage features will be used to
accommodate it and insure it is not blocked by future development? Describe for each area,
flow section, or discharge point.
The drainage will be conveyed through existing ditches and culverts to Phase 6.
Proposed ditches in Phase 6 will convey the water to the existing pond.
Discharge(s) To Lower Property(ies) (Section II , Paragraph E1)
Does project include drainage features (existing or future) proposed to become public via
platting? No x Yes Separate Instrument? x No Yes -- --
Per Guidelines reference above, how will Establishing Easements (Scenario 1) runoff be discharged to neighboring x Pre-development Release (Scenario 2) property(ies)? --Combination of the two Scenarios --
Scenario 1: If easements are proposed, describe where needed, and provide status of actions
on each. (Attached Exhibit# )
Scenario 2: Provide general description of how release(s) will be managed to pre-development
conditions (detention, sheet flow, partially concentrated, etc.). (Attached Exhibit# )
Detention Pond built with prev i ous phases.
Combination: If combination is proposed, explain how discharge will differ from pre-
development conditions at the property line for each area (or point) of re lease.
If Scenario 2, or Combination are to be used , has proposed design been coordinated with
owner(s) of receiving property(ies)?
documentation.
STORMWATER DESIGN GUIDELINES
Effective Februa ry 2007
No
Page 10 of 26
--Yes Explain and provide
APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.2)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project
· gaining Basins or Watersheds and acres shifting:
Will project result
in shifting runoff
between Basins or between f--:--:---,------,-,.----.,.--,--,.----,------=::::...,._=-------:7"'""=---,------------1
Watersheds?
x No
Yes
How will runoff from Project
Area be mitigated to pre-
development conditions?
Select any or all of 1, 2,
and/or 3, and explain below.
1. __ With facility(ies) involving other development projects.
2. __ Establishing features to serve overall Project Area.
3. _x_ On phase (or site) project basis within Project Area.
red facilit (type & location of facility; design drainage area served; relationship to siz
Project : (Attached Exhibit# __ _,
2. For Overall Project Area
3. By phase (or site) project: Describe planned mitigation measures for phases (or sites) in
subsequent questions of this Part.
aquatic echosystems proposed? __ No Yes
?
Are other Best Manage nt Practices for reducing stormwate
No Yes Su rize type of BMP and
If design of any runoff-handli cilities deviate from p
Specifications, check ty acility(ies) and explain in later qu
Conduit elements
__ Ditches __ Inlets __ Valley gutters __
STORMWATER DESIGN GUIDELINES
Effective February 2007
________ Other
Page 11 of 26 APPENDIX. D TECH. DESIGN SUMMARY
As Revi sed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.3)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project (continued)
Will Project Area include bridge(s) or culvert(s)? __ No _x_ Yes Identify type and
general size and In wh ich phase(s).
Proposed double 18" RCP culvert at Station 13+00 Canvasback Cove
If detention /retention serves (will serve) overall Project Area , describe how it relates to subject
phase or site project (physical location, conveyance pathway(s), construction sequence):
Existing Detention pond in HOA Common Area serves this phase .
Within Or Serving Subject Property (Phase, or Site)
If property part of larger Project Area, is design in substantial conformance with earlier analysis
and report for larger area? __ Yes x No, then summarize the difference(s):
Identify whether each of the types of drainage features listed below are included , extent of use,
and general characteristics.
Typical shape?
V-Shape
Surfaces?
Grass
Steepest side slopes:
4:1
Usual front slopes: Usual back slopes:
4:1 4 :1
Flow line slopes: least __ o_. 6_9_%_
typical __ v_a_r _ie_s_ 0.84% greatest ___ _
Typical distance from travelway: 11'
(Attached Exhibit# __ ~
Are longitudinal culvert ends in compliance with B-CS Standard Specifications?
x Yes No, then explain:
rsections or otherwise, do valley gutters cross arterial or collector stre
STORMWATER DES IGN GUIDELINES
Effective February 2007
Yes If yes explain :
Page 12 of 26 APPEND IX. D: TECH. DESIGN SU MMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.4)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Usual
Are 1 ets recessed on arterial and collector streets?
identify here and why.
Greatest
Yes No "no'',
Will inlets captu 10-year design stormflow to prevent flooding of · tersections (arterial
with arterial or colle or)? __ Yes __ No If no, expl · where and why not.
C'-· -0
Q)
<fl
::::i Will inlet size and placemen revent exceeding allowa e water spread for 10-year 2 design storm throughout site (o hase)? __ Y No If no , explain. ::;
OJ
-0 ~ c -0 ro ID -e .~ ac 0 .r:::. u -~ '§
C'-·
-0 Q)
<fl <fl ::::i Q)
E >-~I <fl
c
Yes No Are inlets and
Will 100-yr stormflow b ontained in combination of ROW a buried conduit on
whole length of all str. ets? __ Yes __ No If no, des 'be where and why.
for curb, gutter, and inlets comply with B-CS Technical Specific ·ans?
No If not, describe difference(s) and attach justification .
any 12-inch laterals used? __ No Yes
used.
If not, explain where
·-0 1~1 I--~~~~~~~~~--~~~~~~~~~-.~--=-~~~~~~~~~~
tl Are downstream soff at or below upstream soffits? Leas aunt that hydraulic
!!!. Yes __ N __ If not, explain where and why: grade line elow gutter line
(system-wide):
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 13 of 26 APPE NDIX. D TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.5)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Cil Q)
(.) c rn
Describe watercourse(s), or system(s) receiving system discharge(s) below
(include design discharge velocity, and angle between converging flow line
ii) c
~ ~o ~ E :::J ..__
.~ .E c .
0 .E ~.~
E Q) =-"' Q) E _. cu ~ ~ (/) "5 (/) Q)
c :!2 0
'(U 1)
-0 o._
§ a3 0 Q)
-..c Cf) (/)
tercourse (or system), velocity, and angle?
For each outfall abov , what measures are taken to
receiving and all ilities at juncture?
Q) 1) (ii
Cii a._
Q)
(/)
c ~
Are swale(s) situated along property lines between properties? No x
Number of instances: For each instance answer the following questions.
C'-· (/)
Q3
~ (/)
ti ~ ·~ I -0 x
.8
~ 0 (/) z :::J
(/)
~ rn 3:: (/)
Q)
Surface treatments (including low-flow flumes if any):
Grass Lined
Flow line slopes (minimum and maximum):
0.70%
Outfall characteristics for each (velocity, convergent angle, & end treatment).
10 year -3.1 fps
End Treatment -Detent ion Pond
Yes
4: Will 100-year design storm runoff be contained within easement(s) or platted drainage
ROW in all instances? x Yes No If "no" explain:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 14 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.6)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
en Q)
L ~
0
Q)
:2 en
"O cu 0 0::
en Q) >-
I
0 z
xi
C'-· ~ Q) c c cu L u
c Q)
0.. 0 ..... 0
::J
.!!!
c
"O Q) en ::J
en c 0 ~ c
..0 E 0 u
~
::J "O c 0 u ~ cu ~ en
Q) ~
(j)
Q) u c cu Ul c
Cii c 0 :-E
"O "O cu
>. c cu ...._
..2
c
0 ~ E ...._
0 ..... c
Q)
E cu en
Q)
"O ·5 e 0.. a;
Q)
L en
Q) ro ...._ cu
0..
Q) en
c ~
Are roadside ditches used? __ No _x_ Yes If so, provide the following:
Is 25-year flow contained with 6 inches of freeboard throughout ? _x_ Yes No
Are top of banks separated from road shoulders 2 feet or more? _x_ Yes No
Are all ditch sections trapezoidal and at least 1.5 feet deep? Yes x No
For any "no" answers provide location(s) and explain:
Al l Ditches are V-shaped and a t least 2' deep
conduit is beneath a swale, provide the following information (each instance).
Is 100-ye design flow contained in conduit/swale combination?
If "no" expla· :
Easement
Swale Surface typ , minimum Conduit Type and size, minim
and maximum slopes: slopes, design storm:
vided (to swale, into conduit):
Is 100-year design flow containe
If "no" explain:
Space for 100-year storm
Swale Surface type,
and maximum slope ·
ROW
Conduit Type and size, mi
slopes, design storm :
Yes
Width
um and maximum
In lets Describe ow conduit is loaded (from streets/storm drains , inl
escribe how maintenance access is provided (to swale, into condu :
No
No
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 15 of 26 APPENDIX. D: TEC H. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4. 7)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
c
..!!!
E ~ e w -
"yes" provide the following information for each instance:
15 IJ) Is 100-year design w contained in swale? Yes Is swale wholly
c ~ within drainage ROW . __ Yes __ No
.; I r-~~~~~~~~~~_...,::--~~~~~~~~--,---~~~~~~~~~~--i
u Access nee access is provide· ~ 0 ; z
] x I t--~~~~~~~~~~~~~~~-"<--r-~~~~~~~~~~~~~~~--i
~ Instance 2 Describe general location , aP.
Q.)
·~ C'-· :::i IJ)
.0 c :J Q.) o E :S Q.) ·~ ~
Q.)
tJ) '-_gi 0
~ s
tJ) 0
0::: ~ .~
C'-· -c Q.)
IJ)
.0 :::i Cl..
c ~ 0 Cl.. Cl.. x e w
Cl..
tJ) IJ) c Q.)
Q.) >-
E
I Q.) > e
Cl.. E 0 z
Qi xi c c ro ..c u
Is 100-year design flow co
within drainage ROW?
Is swa le wholly
w" channels: Will any area(s) of concentrated flow be channelized (deepened
wide or straightened) or otherwise altered? __ No __ Yes If only s · tly
shaped , s "Swales" in this Part. If creating side banks, provide informati elow.
Will design repl1 e natural channel? Yes No If "no"
describe section sha & area, flow line slope (min. & max.), s
design flow, and amount reeboard:
Instance 1:
Instance 2:
Instance 3:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 16 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.8)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
'O QJ
::J c
No Yes
Wi small creeks and their floodplains remain undisturbed? __ Yes __ No
man disturbance instances? Identify each planned location:
For each loc tion , describe length and general type of proposed improv.
(including floo lain changes):
For each location , des ibe section shape & area, flow line sl
surfaces, and 100-year sign flow.
'E Watercourses (and tributaries): ide from fri e changes, are Regulatory
0 ~ Watercourses proposed to be altered . __ o __ Yes Explain below.
en c Submit full report describing proposed c n s to Regulatory Watercou rses. Address
~ existing and proposed section size and sh e, surfaces, align ment, flow line changes ,
~ length affected, and capacity, and provid f documentation of analysis procedures e and data. Is full report submitted? Y s No If "no" explain: o._
E
Qi c c C1l ..c
0 requested in next three boxe .
If design is to replicate nat al channel, identify location a length here, and describe
design in Special Design ection of this Part of Report.
Will 100-year flo be contained with one foot of freeboard?
not, identify loc ion and explain:
No If
I easements sized to contain channel and required maintenance spa
No If not, identify location (s) and explain:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 17 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.9)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
<:'-· "O Q) en 0 a. 0 ....
0...
en Q)
~
'13
C1l u..
c 0 ~
Q)
Qi
0
Q)
~
ow many facilities for subject property project? For each provide info. belo
Facility 2
__ yes no no
__ yes no no
Facility 2:
Do outlets and spillways discharge 1
Facility 1: __ Yes No
If "no" explain:
For each , what is velocity of 25-yr desi
Facility 1: & ----+-
Are energy dissipation measures Yes Describe type and
location:
For each , is spillway su
Facility 1:
Facility 2:
easures are taken to prevent erosion or scour at rec 'ving facility?
If berm are used give heights, slopes and surface treatments of sides.
1:
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 18 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.10)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
C'-· in Ol c
in in e u in 2~ !ti
Cll
"O 0
(!) z
tructures comply with B-CS Specifications? Yes or no, and explain if "no":
Facility 1;
Will 2 r. flow pass without flowing over driveway in all cases? __ Yes
Without c using flowing or standing water on public roadway? Yes
Designs & m terials comply with B-CS Technical Specifications? __ Y s
No Explain:
w How many instances? __ _ ~x i d provide information below.
t w Location 1: ~
:::J u
w Location 2: ~
Location 3:
For more instances describe location and same information on separate sheet.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 19 of26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.11)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Named Reaulatorv Watercourses l& Tributaries : Are culverts proposed on these
facilities?~ No ....____Yes, then provide full report documenting assumptions,
criteria, analysis, computer programs, and study findings that support proposed
design(s). Is report provided? __ Yes --No If "no", explain:
~ Arterial or Major Collector Streets: Will culverts serve these types of roadways? Q)
Q) x No Yes How many instances? For each identify the .c CJ) -- --
Q) location and provide the information below.
CJ) ro Instance 1: Q) ..__
>-~ 1 ~ Instance 2:
Instance 3: c
0 o~ Yes or No for the 100-year design flow: 1 2 3
z E ~1~ Headwater WSE 1 foot below lowest curb top?
Spread of headwater within ROW or easement?
E C'-· t1l Is velocity limited per conditions (Table C-11 )? CJ) CJ)
g1-o Explain any "no" answer(s): ·-c ~ t1l
0 c ..__ 0 u:.;:::;
>-t1l t1l (.)
$: ..Q
-0 Q)
t1l .0 Minor Collector or Local Streets: Will culverts serve these types of streets? 0 ·-..__ ..__
(.) (.) No x Yes How many instances? 1 for each identify the ·-CJ) -----Q) -§ -0 location and provide the information below:
Cl. Q)
-Cl. Instance 1: Sta. 13+00 Canvasback Cove ro~
-0 >-Instance 2: Q) c
CJ) t1l ::i_ Instance 3: CJ) 0
t CJ) Q) Q)
For each instance enter value, or "yes" I "no" for:4 ..::: (.) 1 2 3 ::i c (.) t1l Design yr. headwater WSE 1 ft. below curb top? Yes Q) (/) ..__ c
<( ·-100-yr. max. depth at street crown 2 feet or less? Yes ~ 0 Product of velocity (fps) & depth at crown (ft) = ? 0 E ..__
0 Is velocity limited per conditions (Table C-11 )? Yes ~
Limit of down stream analysis (feet)? 300 '
Explain any "no" answers:
STORMWATER DES IGN GUIDELINES
Effective February 2007
Page 20 of 26 APPE NDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.12)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
All Proposed Culverts: For all proposed culvert facilities (except driveway/roadside
ditch intersects) provide information requested in next eight boxes.
Do cu lverts and travelways intersect at 90 degrees? x Yes No If not, ----identify location(s) and intersect angle(s), and justify the design(s):
Does drainage way alignment change within or near limits of culvert and surfaced
approaches thereto? _x_ No --Yes If "yes" identify location(s), describe
change(s), and justification:
Are flumes or conduit to discharge into culvert barrel(s)? _x_ No --Yes If yes,
identify location(s) and provide justification:
'ti' Are flumes or conduit to discharge into or near surfaced approaches to culvert ends?
x No Yes If "yes" identify location(s), describe outfall design treatment(s): <lJ ----::::i c ~ 0 ~
en t:
<lJ Is scour/erosion protection provided to ensure long term stability of culvert structural 2
:i components, and surfacing at culvert ends? x Yes No If "no" Identify u ----locations and provide justification(s):
Will 100-yr flow and spread of backwater be fully contained in street ROW, and/or
drainage easements/ ROW? _x_ Yes --No if not, why not?
Do appreciable hydraulic effects of any culvert extend downstream or upstream to
neighboring land(s) not encompassed in subject property? x No Yes If ----"yes" describe location(s) and mitigation measures :
Are all culvert designs and materials in compliance with B-CS Tech. Specifications?
x Yes No If not, explain in Special Design Section of this Part. ----
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 21 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.13)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
'-(!) co s
bridge included in plans for subject property project? No Yes
If "ye " rovide the following information .
A full report supporting al spects of the proposed bridge(s tructural, geotechnical,
hydrologic, and hydr 1c factors) must accompany this summar
provided? No If "no" explain :
Is a Stormwater
Pollution Prevention
Plan (SW3P)
established for
project construction?
No _x_Yes
Provide a general description of planned techniques:
Silt fence and inlet f ilt r ation will serve as the
main protection against s tormwater pollution. The
Contractor s ha l l use any other means ne cessary
thr oughout construction .
Special Designs -Non-Traditional Methods
Are any non-traditional methods (aquatic echosystems, wetland-type detention, natural stream
replication, BMPs for water quality, etc.) proposed for any aspect of subject property project?
x No Ye s If "yes" list general type and location below.
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 22 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.14)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
ecial Designs -Deviation From 8-CS Technical Specifications
If an design(s) or material(s) of traditional runoff-handling facilities deviate from provisions of
B-CS chnical Specifications, check type facility(ies) and explain by specific detail eleme .
De tion elements __ Drain system elements __ Channel features
Cu Ive Swales Ditches Inlets tfalls
__ Valley gu __ Bridges (explain in bridge report)
1)
2)
3)
4)
5)
Have elements been co t:linated with the City Engineer or her/his des1
above provide "yes" no", action date, and staff name:
1)
2)
3)
4)
Design Parameters
Hydrology
Is a map(s) showing all Design Drainage Areas provided? x Yes No
Briefly summarize the range of applications made of the Rational Formula:
For the Rational Formula we assumed residential areas had a
runoff coefficient of 0.5 for large residential or estate lots.
What is the size and location of largest Design Drainage Area to which the Rational Formula
has been applied? 7 · 1 acres Location (or identifier): Ex. Culvert
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 23 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
AP PENDIX D -TECHN ICAL DESIGN SUMMARY
Part 4 -Drai nage ConceQt and Design Parameters I Continued (Page 4.15)
Design Parameters (continued)
Hydrology (continued)
In making determinations for time of concentration, was segment analysis used?
x No Yes In approximately what percent of Design Drainage Areas? %
As to intensity-duration-frequency and rain depth criteria for determining runoff flows, were any
criteria other than those provided in these Guidelines used? _x_ No Yes If "yes" --identify type of data, source(s), and where applied:
For each of the stormwater management features listed below identify the storm return
frequencies (year) analyzed (or checked), and that used as the basis for design.
Feature Analysis Year(s) Design Year
Stor111 u~tem for arterial and collector streets --------Storm drain system furltr ~ -------Open channels .-
~
Swale/buried condu~ lieu of channel --------~ --------Roadside ditches and culverts serving them 2,5 ,10,25,50,100 25
D~ilities: spillway crest and its outfall ---------Detention faci litie~ conveyance structure(s) ---------Detention facilities: volume when ~ed -----~
Culverts serving private drives or~ -----r-..
Culverts serving ~ __ ways ---------~vide in bridge report. ---------Hydraulics
What is the range of design flow velocities as outlined below?
Design flow velocities; 25 year Gutters Conduit Culverts Swales Channels
Highest (feet per second) 7.49
Lowest (feet per second) 5 .51
Streets and Storm Drain Systems Provide the summary information outlined below:
Roughness coefficients used:
For conduit type(s) RCP 0.013
STORMWATER DESIGN GUIDELIN ES
Effective February 2007
For street gutters:
Page 24 of 26
NA
Coefficients:
APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.16)
Design Parameters (continued)
Hydraulics (continued)
eet and Storm Drain Systems (continued)
For th ollowing, are assumptions other than allowable per Guidelines?
Inlet coeffl · nts? No Yes Head and friction losses
Yes No
Yes No
Explain any "no" answers:
Yes No
For 100-year flow conditions?
What tailwater conditi s were assumed at outfall point(s) of the storm
plain:
Open Channels If a HEC analysis is utilized , does it follow Sec Vl.F.5.a? __ Yes __ No
Outside of straight sections, is flow regime within limits of sub-critical flow? _x_ Yes __ No
If "no" list locations and explain:
Culverts If plan sheets do not provide the following for each culvert, describe it here.
For each design discharge, will operation be outlet (barrel) control or inlet control?
All culverts will be inlet controlled.
Entrance, friction and exit losses:
A 0 .5 entrance and exit loss coefficients are used for sloped end treatments
and square edged headwalls with wingwalls .
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 25 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.17)
Design Parameters (continued)
Computer Software
What computer software has been used in the analysis and assessment of stormwater
management needs and/or the development of facility designs proposed for subject property
project? List them below, being sure to identify the software name and version, the date of the
version, any applicable patches and the publisher
Microsoft Excel Spreadsheet
Part 5 -Plans and S~ecifications
Requirements for submittal of construction drawings and specifications do not differ due to use of a
Technical Design Summary Report. See Section Ill, Paragraph C3 .
Part 6 -Conclusions and Attestation
Conclusions
Add any concluding information here:
The Duck Haven Subdivision, Phase 6 will have no adverse impact to downstream
properties and conforms to the overall subdivisi on repor t .
Attestation
Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical
DesiQn Summary DrainaQe Report by siQninQ and sealinQ below.
''This report (plan) for the drainage design of the development named in Part B was prepared
by me (or under my supervision) in accordance with provisions of the Bryan/College Station
Unified Drainage Design Guidelines for the owners of the property. All licenses and permits
required by any and all state and federal regulatory agencies for the proposed drainage
improvements have been issued or fall under applicable general permits." --~~~'''' f ~Mz --« 'r-'i ' ~h: l (Affi S I) -~ \'' >;· ........ t.:..f: l IX ea ,. C.-•••• •• h ····:</,p a ~ -...( r , --tt, 1i 11 f.* .. ·y i~ ····· .. **',,
Licl 1se~ofessional Engineer I I ~JEf~f.ERY .. l:·RCBERT~O~j:~ ,, .... : .. ·· .......... ··:·····:·····
State of Texas PE No. qq7 ~ 5 ,, ~-.... 9 4 7 4 5 ./('-:; r ~o . (, ~\) . /"-1 .,, 'I ~·· .. 1Cf;.15'-..-.~v.;
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 26 of 26
\ '\" .~. "• .. ,, .. "';.\.!)' ""
APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
Drainage Report
EXHIBITB
Drainage Area Map
D uck Haven Subdivision, Phase 6
EXHIBITC
Runoff and Culvert Calculations
Drainage Report
Duck Haven Subdivision, Phase 6
EXHIBITC
Runoff and Culvert Calculations
Drainage Report
Duck Haven Subdivision, Phase 6
EXHIBIT C-1
Rational Formula Drainage Area Calculations
Duck Haven Phase 6
NO. IAC. 0.4 0.51 0.9 ft. lft. ft. ft. ft/s !min 1min In/Hr cfs In/Hr cfs In/Hr cfs In/Hr cfs lln/Hr cfs In/Hr cfs
E<S.~":".'!. L?,!QL.9c..O<JLD.Qf--9,~L-~~5 -~Ql __ ~9 __ !_!~~t.Qf.Jo o --~'~t . .!l,~L!9,9L2,~~-~,~----_?_l 3I_3 ---~~}QZ!_JlcB6 .]!ic..9_LJJ,l~ --~?,?L!?Ji~ ~5 Culvert, r 4.00• o.OOT 4.00 0.001 2.00 100.01 2.0 1085.0 17.0 2.2: 9.0, 10.oT 6.33, 12.7 7.7 15.4 8.6 17.3 9.86 19.71 11. 15 22.3T 12.53 25. 1
7/2112014
dra.xls
Exhibit C-1
Culvert
Culvert Description
(2) 18" HOPE
n Criteria
No.
Pi s
2 0.014
Culvert Anal sis Calculations
Total Flow per Critical
Design
Storm
Pipe Depth(ft.)
crs
1.10
10 17.30 8.65 1.15
25 19. 70 9.85 1.20
so 22.30 11.15 1.25
100 25.10 12.55 1.35
1.07
1.18
1.50
1.50
1.50
EXHIBIT C-2
CULVERT ANALYSIS
Duck Haven Phase 6 -Canvas Back Cove Culvert
INLET CONTROL
HWllD HV'.I EL hi
0.99 1.48 280.21
1.11 1.66 280.39
1.20 1.80 280.53
1.34 2.01 280.74
1.51 2.27 281.00
1.72 2.58 281.31
ELhi Top of Road ~Lho ~-1 ;-----------H __/-- - -___ ~ _ -__ - -TW
Eli Proposed Culvert
ELo
0.024
HEADWATER CALCULATIONS Control Type Outlet
OUTLET CONTROL
TW de de+ D 12 ho H
0.92 0.95 1.23 1.23 0.49
0.99 1.10 1.30 1.30 0.72
1.04 1.15 1.33 1.33 0.91
1.10 1.20 1.35 1.35 1.18
1.14 1.25 1.38 1.38 1.51
1.19 1.35 1.43 1.43 1.92
HW
El ho Elev.
280.07 280.21
280.37 280.39
280.58 280.58
280.88 280.88
281.24 281.24
281.69 281 .69
or
Control
Inlet
Inlet
Outlet
Outlet
Outlet
Outlet
Velocity
5.95
6.50
7.09
7.49
2.11
1.81
1.45
1.00
7121/2014
culvert 1.xls
Exhibit C-2
30' Drainage Easement
Existing Ground
10'
PROPOSED CROSS SECTION FROM CULVERT TO EXISTING DETENTION POND
NTS
Q •ty 1.49 capac1 = 0.020
~2,6( )1h
24.o \ 22.4 I \ 0.01 = 1a1.2 cts
EXHIBIT C-3
Channel Capacity
DUCK HA VEN PHASE 6
Qactual = 69.5 cfs
COLLEGE STATION, BRAZOS COUNTY, TEXAS
~ U<CWRE • MOWNE BWNEEWNG,/SVmNG, WC 1008 Woodcl"Hk 0dll"6, Suit~ fo.J; Coll~ Station, TX 778"5
(979) 69J-J8J8 Fox: (979) 693-255~
firm Rttg. No. F-458
CITY OI' C OLLEGE STATION
Home of Texas A&M University'
CASE :oo.R OFFIC~E·~
DATE SUBMITTED:~!
TIME: -3~
STAFF: ca
PLANNING & DEVELOPMENT SERVICES
TRANSMITTAL LETTER
Please check one of the options below to clearly define the purpose of your submittal.
D New Project Submittal
0 Incomplete Project Submittal -documents needed to complete an application. Case No .:
[Z] Existing Project Submittal. Case No.: 14-153
Project Name Duck Haven Phase 6
Contact Name -'--Je-'--ff_R--'o--'b-'-e--'rt-'-s-'--on __________ _ Phone Number -'-9-'--7-'--9---'6-'-9-'-3--'-3--"8-'-3-'-8 ________ _
We are transmitting the following for Planning & Development Services to review and comment (check all that apply):
D Comprehensive Plan Amendment
D Rezoning Application
D Conditional Use Permit
D Preliminary Plan
0 Final Plat
D Development Plat
0 Site Plan
D Special District Site Plan
D Special District Building I Sign
0 Landscape Plan
0 Non-Residential Architectural Standards
0 Irrigation Plan
D Variance Request
D Development Permit
D Development Exaction Appeal
D FEMA CLOMA/CLOMR/LOMA/LOMR
D Grading Plan
0 Other -Please specify below
INFRASTRUCTURE AND ENGINEERING DOCUMENTS
All infrastructure documents must be submitted as a complete set.
The following are included in the complete set:
D Comprehensive Plan Amendment [Z] Waterline Construction Documents
D TxDOT Driveway Permit D Sewerline Construction Documents
D TxDOT Utility Permit [Z] Street Construction Documents
[Z] Drainage Letter or Report D Easement Application
D Fire Flow Analysis D Other -Please specify
Special Instructions:
10/10 Print Form
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.10)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
tructures comply with B-CS Specifications? Yes or no, and explain if "no":
Facility 1;
If) OJ :;:;
=TI ~OJ Facility 2: LL ::i c c~ 0 c ~o c u OJ ~
For additional faci l it~ide all same information on a se~heet. Qi
0 ~s to be used for detention? __ No _Yes~ due to required design storm?
Roadside Ditches: Will culverts serve access driveways at roadside ditches?
No x Yes If "yes", provide information in next two boxes. -- --
Will 25-yr. flow pass without flowing over driveway in all cases? x Yes No ----
Without causing flowing or standing water on public roadway? x Yes No ----
Designs & materi als comply with B-CS Technical Specifications? _x_ Yes --No
Explain any "no" answers:
('-·
If)
Ol c
If) Are culverts parallel to public roadway alignment? x Yes No Explain: If) e ----
u If)
OJ 2 >-! x j Creeks at Private Dri ves: Do private driveways, drives, or streets cross drainage
C1l ways that serve Above-Project areas or are in public easements/ ROW?
-a 0 x No Yes If "yes" provide information below. OJ z ----If)
I ::i How many instances? Describe location and provide information below . .El All three lots will need ditch crossing culverts to (ij Location 1: 2 access Canvasback Cove. None will cross the ditch east ::i u of the proposed culvert on Canvasback, so none of the OJ Location 2: '-driveway culverts will cross areas needed for upstream <{
drainage conveyance. Each proposed lot will need
Location 3: a minimum of an 18" culvert.
For each location enter value for: 1 2 3
Design year passing without toping travelway?
Water depth on travelway at 25-year flow?
Water depth on travelway at 100-year flow?
For more instances describe location and same information on separate sheet.
STORMWATER DESIGN GUIDELI NES
Effective February 2007
Page 19 of 26 APPENDIX. D: TECH. DESIGN SUMMARY
As Revised February 2009
~
N l ,.
} f:t-
Scale: 1 Inch = 200 Feet
Area: 10.020 Acres (436,489.40 Square Feet)
14-153
DUCK HA VEN PH SIX
BLK7 LTSl-3' CA
ACRES 10.021
Area: 10.020 Acres (436,489.40 Square Feet)
Perimeter: 2973.97 Feet
Gap= 0.006
I. S45°00'00"W 328.15' 5. N31°25'01"E Ch40.23' Radl65.00' L
2. N44°57'07"W 1155.22' 6. S69°08'05"E 433.79'
3. N45°20'54"E 155.37' 7. S64°31'3l"E 227.84'
4. S65°3 l '27"E 255.35' 8. Sll0 10'5l"E 377.92'
GAP error cannot be greater than 0.10 (See SOP for Exceptions)
CLOSED
6-19-2014
BR