HomeMy WebLinkAbout14-153FOR OFFICE USE ONLY
CASE NO .: 1'--1 -J 730
CITY Of' C OI.l.E G E S TATION
Hom e o/Texas A&M Uni versity •
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 cop ies 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 accompan ied 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 Te x as 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 Te x as 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 Te x as 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 lim it ed 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 h is 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 Ord inance .
'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
adhe rence 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 ;
Rev ised 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 Commiss ion .
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
Rev ised 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] V icinity map which includes enough of surrounding area to show general location of subject property in
relationship to College Station and its City Limits . No sc ale 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] Eng ineer'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 Commiss ion 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 Des ign 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
Re vi sed 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
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C RTIFIC ATl OF U GAN I Z I
OF
DUCK HAV"N HANAGEME Nf, LLC
F ILI NG NUM ER 0 7 09 2 1 1 3
TH C JN[)[ ·s IGf\ o, AS Sl:dff AR Y OF S TATE OF rw: STA T E OF T EXAS ,
11 :.; ;~lH Ct. .T JFIC:S THA rll t ATT CH -0 6.1\T IC L E OF 0 GA N l b \TI ON FO R TH E
A ~3 VE 1-l MI D C Cl IH JY VF 8 t: • k EC ri 'U> It T H I S F F I CE AN U HAVE BE EN
f n , o ·o r.uNFO "' r u L Aw .
/,Cr, 0 0 JN G LY , I : UM DE R I G E t I\ S S f: C,. E T ARY fJ F ST AT E , AN D B Y VI RT UE
GF T H. AUTHn · 1 · Y V S LD I THE ~ C c T At\Y BY L AW , HE f<E BY ISSU S THIS
er 1 T I F IC .A.TE -OR GAf\I ZI TI l'l
ISS U 1'-tct: F THI C .T Fl CATE UF 0 GAN IZ TIO ! DOE S NOT AU T HORIZ E
Hfr USE F /!. 0~1 P I· Y N 1 I N THI S ST Alt H VIO LATION UF lH R I GHT S OF
AN r 1-1 r: "N I Y UNfl ·'R TH f . Ot: A L. T AD EM t< A CT OF 1 9 46 , TH E T E XAS T R AD E MARK
L A\-1 , T r A S UIH: BU . I Nt l fl PRO S l ONA L NAME ACT OR TH E COMMON LAW.
D T D JU N 28 , 2 0 0 1
t.F ~C .J.V J U I zo, 200 1
Henry Cuellar, Secretary of State
ARTICLES OF ORGANIZATION
OF
DUCK HAVEN MANAGEMENT, LLC
June 26 , 2001
ARTICLES OF ORGANIZATION
OF
DUCK HAVEN MANAGEMENT, LLC
FIL E D
f n the Offic e of the
Se cre tary of State of Texas
JUN 28 200 1
Co rporation s Sectio n
I, the undersigned na tural person of the age of e ighteen years or mo re, acti ng as the
organi zer of a limited liability company (the "Company") under the Texas Limited Liability
Co m pany Act, do hereby adopt the following A rt icles of O rganizatio n for such Company:
ARTICLE I
The na me of the Company is DUCK HAVEN MANAGEMENT, LLC.
ART ICLE II
The period of duration of the Company is perpetua l.
ARTICLE Ill
The purpose for which the Company is organ ized is to transact any or all lawfu l business
for which lim ited liability companies may be organized under the Texas Limited Liability
Company Act.
ARTICLE IV
The address of the Company's principa l 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 29 1h Street, Suite 100
Bryan , TX 77802
ARTICLE VI
The Company is to be managed by one or more managers . The name and add ress 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, Su ite 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
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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 E S ANO T H
. I<~I NA L i~5 B -F l l . l N T HJ 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 L ET US KNOW .
Henry Cuellar, Secretary of State
•
(
FIL E D
In t he O ffice of th e
Secretary of State of Te xas
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 29 th 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 29t h 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 29 th 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 deve lopment.
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 No rth Texas Avenue
Bryan, TX 77803
Main 979 .361.4440
Fax 9 79 .823 .2275
Email agarn er@ brazosco u nt ytx.gov
2
6
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B razos Co u nt y Hea~h Department
201 North Texas Avenue
Bryan, TX 77 8G 3
Phone : 979-361-5738
Fax : 979 -923-2275
48006
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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 follow ing 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 appl icant 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:·\TIO N ·TEXAS · 77842
"f EL. 979 .764.3570 ·FAX. 979.764 .3 496
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 rev ise 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 w ith in ditches and drainage easements .
Reviewed by : Danielle Singh Date : 8/11 /14
Home of Te xa s 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 : trav is@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" cop ies 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 conta ined 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 • 77 842
T EL. 979 76 4 .35 7 0 ·FAX. 9 7 '1.7 64.34 96
. Id 1 riS Si!' 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
cert ificate 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 pl an s, that have not b een reques ted by the City o f College Station, mu st be explained in your next
transm ittal letter and "bubbled " o n your plans . Any additional changes on t hese plans that have not been pointed out to the
City, wi ll con stitute 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 with in Brazos County .
Reviewed by : Robin Krause , Permit Technician Date : June 24 , 2014
NOTE: Any changes m ad e to the plan s, th at have no t b ee n reguested b y the City o f Coll ege Sta tion, mu st be exp lained in yo ur nex t
transmittal letter and "bubbl ed" on yo ur plans. t\ny additional ch anges on t hese plan s that have not been pointed o ut to th e
City, will constitute a co mpl etely n ew rev iew . Page 3 of 3
;; ·~ '-··
C ITY OF C ou1 ~G E STATION
Home o/Texas A&M Uni versi ty •
1101 Texas Av enue , PO Box 9960
College Station , Tex a s 77842
Phone 979.764.3570 I Fax 979.764.3496
FACSIMILE COVER SHEET
Date: La -.3D-\4 # of p ages including cover:_±__
If you did not recei ve a complete fax, plea se ca ll our offic e immedia tely fo r a n e w tra n smitta l.
TO:~ h"f\D\d, FAX:(S I 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
Pla 11ning & D e11el opment S ervices
P U. flO X 9')60 • 11 OJ TEXAS AV ENUE • C O!.l.EGE STl\TIO N • TIX.\S • 77842
TEL 9 7 '!.764.3570 ·FAX . 97'1.764 . .3·1 %
cstx.gov/devservices
DFYI
t\ \. {
,,,,.,, ~
............ _""'---------~C ITY 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 • 77 842
TEL. 979 76 4 .3 57 0 ·FAX. 9 7 9.7 64.3496
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 m ad e to th e plans, that have not bee n requested by the City of CoUege Station, must be exp lained in your next
transm ittal letter and "bubbled" o n your plan s. Any add itional changes on th ese 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 th e pl an s, that have not bee n requested by th e C ity of Coll ege Station, must b e ex pl ai ned in yo ur next
transmittal letter and "bubbled" o n yo ur plan s . A ny additional changes on t hese pl ans that have not b ee n p o inted out to the
City, will constitu te a completely n ew revi ew. Page 3 of 3
MEMORANDUM
DATE : June 18 , 2014
TO : T ravis 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/Survey ing , 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 .35 70 ·FAX. 979.764.3496
cs t><. gov I devservices
CITY OF C OLLEGE S TATION
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 & Z oning Commission
September 4 , 2014
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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 Commiss ion
September 4 , 2014
Page 4 of 4
CLARKE 8r WYNDHAM
REAL ESTATE INVESTMENT SERVICES
TRAVIS MARTINEK
3608 East 29 th Street, Sui te 100
Brya n, Texas 77802
Offi ce: (979) 846-4384 Fax : (979) 84 6-1461 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
• Eng ineer'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
Proj ect: 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 t hat does not prov ide any
information as th is has already been provided with Paul Clarke 's informat ion in the firs t
cert ificate on the plat. See revised plat.
" 5. Unless it was requested to be provided on the plat for financ ial 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 tha t you , the appl icant , are responsible for scheduling the plat for consideration
by the · Coun ty Commissione r's Court and for getting the County Judge's signature on the
My lar after they approve the plat.
8. Please note that any changes made to the plans , which have not been reques t ed by t he
City of College Station , must be expla ined in your next transm ittal letter and "bubbled " on
your plans . Any additional changes on these plans that the City has not been made aware of
w ill constitute a completely new review .
Reviewed by: Morgan Hester Da te: June 20 , 2014
ENGINEERING COMMENTS NO. 1
1. Please show lot corner markers for each lot.
2. Please prov ide an eng ineer's est imate , dra inage report , and wate r report . See attached .
--?-3. Please make sure to coordinate the construction of Canvasback Cove between Duc k Haven
and Saddle Creek . The ROW appears to be offset by appro x imately 3". Co nstruction 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 Sadd le Creek
Phase 11. The design cannot stop a few feet short of the property line with end of roa d
signs . The pro j ects will need to connect. Temporary barricades would be more appropriate
for t his 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 coo rdinate t his
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 upda t e 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 wate rline. 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 change s made to the. plans, that have not been requested by the City of College Station, mu st be explained in your next
transmittal letter and "bubbled" on your plan s. 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 change s made to th e plans, that have not bee n requested by the City of College Statio n, mu st b e exp lain ed in your next
transmittal letter and "bubbled" on yo ur plan s. A ny additional changes o n the se plans that have not been pointe d out to the
City, will constitute a completely n ew review. Page 3 of 3
vr OEVELOPM ENT REVIEW
DUCK HAVEN PHASE 6 Case :
14 -153
FINA L PLAT
N
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R-4
R Rura l R-e
E EJta;te MKP
RS Ru lolad Suburban 0
GS G.!:ner al Sti burba. SC
R-16 S i.ng le Family R·es ide-ntisJ GC
D Dvplex C l
T Tow n.lious·e BP
DEVELOPMENT REVIEW
Multi-Fam l iy BPI Business Par Industrial
High Oen$ i!y Mµlti-F ami ly NA P N atura l 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 Co llege .en-d University
Commacia.~l nduslr ial Re, D Reses.rch a.ml :Development
Bus in ess Psr P-MU D Planned M ixed-Use Deve.lopment
DU CK HAVEN PHASE 6 Ca se :
14 -153
POD
WPC
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KO
Pla nned Development Dis tr ict
Wol l' 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 201 4
PREPARE D 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 U R E & BRO\VNE EN G INE ERI N G /S U R VEYIN G , INC. Ir ~ 1008 Woodcreek Dr .. Suite 103 . College Station , Tx. n845 . (979) 693-3838 Eng ineer 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 Designe r: McClure and Browne E ngineering and Surveying, Inc.
1008 Woodcreek Drive , Suite 103
Col lege 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 lot s. 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 ha s been analyzed as
part of the Phase 3 Drainage Report submitted in September, 2006. The development is entire ly 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 in corporated 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 s ubmittal.
The culverts a nd ditches peak runoffs were found u s ing the Rational Method. A runoff coefficient ( c) of
0.50 was used for residential areas since a ll 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
Cu lvert Calcul ations
Drainage Report
Indian Lakes, Phase 18
Drainage Report
EXHIBIT A
Technical Design Summary
Duck Haven S ub division , Phase 6
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
T he 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 w ith land development projects , both site projects and subdivisions .
T hat report may be submitted as a trad itional prose report , complete with appl icable 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 prov ide , at minimum , the information prescribed in the
'T echnical Design Summary " in th is Append ix.
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 deta iling 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
dig itized . 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 connect ion 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
Th is 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 ,
STO RMWATE R D ESIGN GU IDELINES
Effective February 200 7
Pa ge 1 of 26 APPENDIX . D : TECH. DE S IGN SUMMARY
As Rev ised Feb ruary 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
outl ined .
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 Februa ry 2007
Page 2 of 26 APPENDIX. D TECH . DESIGN SUMMARY
As Rev ised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
P a rt 2 - P roject 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 Sta t io n
Co llege Station, Texas 77845 Date of Submittal :
(979)693-3838
Lead Engineer's Name and Contact l nfo .(pho ne , e-m ai l , fax ): Oth e r :
Jeffery L . Robertson, P.E .
Supp ort ing Eng ineering I Co nsulting Firm(s): Other contacts :
Developer I Owner I Applicant Information
Devel o per I Ap plicant Name and Ad dress : Ph one 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-ma il:
Project Identification
Deve lop ment Name : Duck Haven, Phase 6
Is subject property a site project , a sing le-phase sub di vision , or part of a mu lti-p hase subdivision?
Multi-phase Subdivision If multi-phase , subject prop erty is phase 6 of
Legal description of s ubje ct pro perty (pha se) or Project Area:
(see Section II , Paragraph B-3a )
Duck Haven, Phase 6
If su bject property (phase) is sec ond or later phase of a project, des cr ibe gen eral status of all
earl ier phases . For most rece nt earlie r phase Inclu de submitta l 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 s ubject property (phase ):
Project site is located near the intersection of Retriever Run and Canvasback Cove
in Brazos County , Texas.
In C ity Limits? Extraterritorial Jurisdi ction (acre age):
Bryan : acres. Bryan : College Station : 10 .02
Colle ge Station : acres . A creage Outs ide ET J :
STORMWATER DESIGN GUIDELINES
Effecti ve February 2007
Page 3 of 26 APPE N DIX. D : TECH. DES IGN SUMMARY
A s Rev ised 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 o r Abutting tracts , platted land , or bu ilt
subject property: developments:
Retriever Run Duck Haven Phase 4
Named Regu latory 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)
P re li m inary P lat F il e#: Fi n al Plat F ile #: Dat e :
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)
Z on ing Type : Existing or Proposed? Case Code :
Case Date Status :
Zon ing Type : Existing or Proposed? Case Code :
Case Date Status :
Stormwater Management Planning For Project or Subject Property (or Phase)
P lanning Con f erence(s) & Date(s): Participants:
P rel im inary Report Requ ired? Submittal Date Review Date
Review Com m ents Addressed ? Y es --No --In Writ ing? When ?
Compliance With Preliminary Drainage Report. Briefly descri be (or attach documentation
ex p laining) any deviation (s ) from provisions of Preliminary Drainage Report , if any .
STORMWATER DESIGN GUIDELINES
Effe cti ve Februa ry 200 7
Pa ge 4 of 26 APPENDIX . D: TECH. DESIGN SUMMARY
As Rev ised Feb ruary 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Conti nued (page 2 .3)
Coordination For Project or Subject Property (or Phase)
Note : For any Coordination of stormwater matters indicated belo w , attach documentatio n
desc ri bin g and subs tan tiating a ny agreements , unde rsta nd ings , con tracts , o r a pp rovals .
Coordi nation Dept. Conta ct: Date : Subject:
With Ot her
Depa rtm ents of
Ju r isdicti on
C ity (Bry an or
Colle ge Station )
Co ord ination With Summ arize need(s) & actions taken (i nclu de contacts & da tes):
Non -jurisd icti on
C ity Needed?
Yes No x ----
Coordi nation with Summarize need(s) & actions taken (i nclude contacts & dates ):
Braz os County
Need){?
Yes No_!_
Coordi nation with Summarize need(s) & act ions taken (i nclude contacts & da tes):
TxDOT Needed?
Y es No x ----
Coordi nation wit h Sum m arize need(s) & actio ns taken (i nc lud e contact s & da tes):
TAMUS Needed?
Yes No x ----
Permits For Project or Subject Property (or Phase)
As to sto rmwater mana gement , are permits requ ire d for the pro po sed work fr om any of t he entities
listed bel ow? If so , su mmarize status of effo rts toward that obiect ive in spaces below.
En t ity Permitted or Status of Ac t ions (inclu de dates) Approved ?
US Army Crops of
Engin ee rs
No x Yes ---
US Env iron menta l
Protecti on 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
Aut horit y
No x Yes ---
STORMWATER DESIGN GUIDELINES
Effect ive February 2007
Page 5 of 26 AP PENDIX . D: TECH . DESIGN SUMMARY
As Re vised 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 impervio us cover?
Existing undeveloped land (Dense tree cover) . Existing impervious cover is
approximately 0 sf.
Site __ Redeve lopment 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 consis ts 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_ Y es __ (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 Floodpla in
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 .
ST ORMWATER DESIGN GUIDELINES
Effect ive 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 earl ier 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 .
Du ck Haven Subdivision; Octobe r , 2006 x --
Is the stormwater management plan for the property in substantial conformance with the
earli er 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
therew ith .
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 (i nclude approximate size , volume , outfall , model , etc).
Any known drainage or flooding problems in areas near subject property? x No Y es ----
Identify :
Based on location of study property in a watershed , is Type 1 Detention (flood control ) needed?
(s ee Table B-1 i n Append ix 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 n ot 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
Pa rt 3 -Pro~ert~ Characteristics I Co ntinued (Page 3.3)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Does subj ect property stradd le a Watershed or Bas in d iv ide ? x No Yes If yes , ----
describe spl its bel ow . In Part 4 describe des iq n concept for ha nd li nq th is .
Watershed o r Basin Larger acreage Lesser acre ag e
Above-Proj ec t Areas (Section II, Paragrap h 83-a)
Does Project Area (project or phase ) rece iv e runoff fro m upland areas? _x_ No --Yes
Size (s) of area(s ) i n acres : 1) 2) 3) 4)
/ ~C~acteris t ~a ch instance) (overland sheet , shallow concentrat ed , rec ogn izable
Co nce7 , small creek (non -regu latocy), regulatory W atercoucse or trl butacy );
Phas e 18 does n receive stormwater from upstream lands.
""-
F low determi nati o n: Out li ne hy dro lo g ic methods and assum pti ons :
Does storm runoff d rain from public easements or ROW onto or across subject propert y?
--No --Y es If yes , describe fa cilities in easement or ROW :
Are changes in ru noff characteristics subj ect to cha nge in f uture? Ex plain
Co nveyan ce Pathways (Section II, Paragraph C2 )
Must ru noff from study property drain across lowe r properties befo re reach ing a Regu lato ry
Waterco urse or tributary? x No Yes
Describe leng th and characteristics of each conveyance pa t hway (s). Include ownersh ip of
property (i es ).
STORMWATER DESIGN GUIDELINES
Effecti ve Febr uary 200 7
Page 8 of 26 APPENDIX . D: TECH . DESIGN SUMMARY
As Rev ised Febru ary 200 9
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
__ instrumen t. If instrument(s), descri be thei r provisions .
part of
path way (s)?
No --
Yes --
Whe re run off must cross lower properties, describe characteristi cs of abutting lo wer
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 hy dro logic or hydrau lic influence on proposed stormwater Facilities des ign? x No Yes If yes , expla in : ----
STORMW ATER DESIG N GUIDELINES
Effective Februa ry 2007
Page 9 of 26 APPE NDI X. D: TECH . DESIGN SUMMARY
As Rev ised 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 des ign drainage features will be used to
accommodate it and insure it is not blocked by future development? Describe for each area ,
flow sect ion , or discharge point.
Discharge(s) To Lower Property(ies) (Section II , Paragraph E1)
Does project inc lude drainage features (ex isting or future) proposed to become public via
platting? x No Yes Separate Instrument? x No Yes -- --
Per Guidel ines reference above , how will Establishing Easements (Scenario 1) runoff be discharged to neighboring --
property (i es )? --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 , ex plain how discharge wil l d iffer 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
Effe cti ve Febru ary 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 run off
between Bas in s 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 faci lity(ies) invo lving 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 bas is w ithin Project Area .
and/or 3 , and explain below .
1. Shared facility (type & location of facility ; design dra inage area served ; relationship to size of
Project Area ): (Attached Exhibit# )
2 . For Overall Project Area (type & location of facilities ): (Attached Exhib it# )
3 . By phase (or site) project: Describe planned mitigation measures fo r phases (or sites) in
subsequent questions of th is 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 exten t 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 Techn ical ·u
<ll Specifications , check type facility(ies ) and expla in in later questions . 0.
CJ) Detention elements Conduit elements Channel features <ll ------.< Swales Ditches Inlets __ Valley gutters __ Outfa ll s ------
--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 - D rainage Conce12t and Design Parameters I Con tinued (Page 4.3)
Stormwater Management Concept {continued)
W ithi n Pro ject Area Of Mu lt i-Pha se Project {co ntinued )
Will Project Area include bridge(s) or cul vert (s)? _x __ No __ Yes Identify type and
ge neral siz e and In w hich phase(s).
If detention/retenti on serves (will serve) overall Project Area , describe how it relates to subject
ph as e or site project (phy sical lo cati o n, conveyance pathwa y(s), construction seque nce):
W ith in Or Serving Subject Property {Phase , o r Site)
If prop erty part of la rger Pro j ect Area , is design in su bs tantia l confo rman ce w it h ea rl ier analys is
and report for larger area? __ Yes No , then su mmarize the difference(s ):
Ide ntify whether each of t he ty pes of d rai nage fea t ures liste d be low are incl ud ed , extent of use ,
and general cha racteristics .
Typica l shape? I Surfac es?
C'-· V-Shape Grass
-a
Q)
(/) Stee pest side s lo pes: Usual fro nt slopes : Usual back slo pes : (/)
:J Q)
(/) >-4:1 4:1 4:1
Q)
xi
.s:::. Fl ow line sl o pes : least 0.6% T ypic al dista nce from trave lway: 11' g
-a Varies 2.2% (Attac hed Ex hibit# )
Q)
0
typical greatest
:Q z (/) -a
I
cu e Are long itudinal culvert end s in com pl ian ce with B-C S Stan da rd Specificatio ns?
Q) x Yes No , t hen explain: ~
(/) At intersecti o ns o r ot herwi se , do va ll e y gutters cro ss arterial o r coll ector st reets?
..c Q) No Yes If yes ex pla in : ~ C'-· >---u -a
I
.s:::. Q) -(/) ·-:J ~ .._ A re valley gutters pro pose d to cross any street awa y from a n intersecti on ? (/) Q) --Q) "S 0 No Yes Explain : (number of locatio ns?) ~ rn z -- --
--a I ~ c x .._ cu
<{
STORMWATER DESIGN GUIDELINES
Effect ive February 2007
Page 12 of26 APPE NDIX . 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 Usua l Greatest
Are inlets recessed on arterial and collector streets? __ Ye s
identify where and why.
__ No If "no ",
Will inlets capture 10-year design stormflow to prevent flood i ng of inte rsections (arterial
with arterial or collector)? __ Ye s __ No If no , ex plain where and why not.
Wi ll in let size and placement prevent exceed ing 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 condu it on
whole length of all streets? __ Y es __ 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 r uns between system I Typical Longest
access points (feet): -----
Are junction boxes used at each bend? __ Yes __ No
and why .
If not, ex plain where
·-0 1 ~, !---------------------~-----------~
u; Are downstream soffits at or below upstream soffits? Least amount that hydraulic
.!!!. Y es __ No __ If not , ex pla in where and why: grade line is below gutter line
(system-wide):
STORMWATER DESIGN GUIDELINES
Effecti ve Februa ry 20 07
Page 13 of26 APPENDIX . D TECH . DESIGN SUMMARY
As Revised Febru ary 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) Watercou rse (or system), velocity , and angle?
2) Watercourse (or system ), velocity , and angle?
3) Watercourse (o r 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 (min imum and maximum): ~>-I
.8
al 0
~ z Outfall characteristics for each (velocity, convergent angle , & end treatment).
~x i
tfl
Q) .;c Will 100-year des ig n storm runoff be contained within easement(s) or platted d ra inage
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 ex plain: CJ)
" All Ditche s are V-s haped a nd at least 2 ' deep ro
0
0:::
If conduit is beneath a swa le , provide the follow ing information (each instance).
Instance 1 Describe general location , approx imate 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 , m inimum 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 dra ins , 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/swa le combination? Y es 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 Rev ised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Co ntinued (Page 4 .7)
Stormwater Management Concept (continued)
W ithin Or Se rving Subject Property (Phase , o r Site) (con ti nued)
If "ye s " prov ide t he fo ll owin g in fo rma tio n fo r each insta nce :
Instance 1 De scribe general locat ion , a pprox imate leng th , surfa ci ng :
c
~
E 0.. x e w -:i:: ui Is 100 -year des ig n flow conta ined in swa le? --Y es --No Is swa le wholly a Cll c ~I with in d ra inage ROW? Y es No Exp la in "no" a nsw ers :
2 ----
Cll .:::
Cll Acces s Describe how m aintenance access is provide : u
Cll
'-a -z :::J 1 x I Instance 2 Des c ribe general lo cation , a pp roximate le ngth , surfaci ng :
Cll ·;:: C'-·
:::J r.n
.0 c
:5 Cll
a E
£ Cll r.n Is 10 0-year de sign flo w c on tai n ed in swa le? Y es No Is sw a le wh olly "§ C1l ----Cll w ith in drai nage ROW? __ Y es No Ex plai n "no " answe rs : r.n '---~ a
C1l s 3 r.n 0
~ 0::: Access Describe how mainte nance access is prov ided :
u
.0
:::J
0..
Instance 3, 4, etc. If swal es are used in m ore than tw o instan c es , attach sheet
providing a ll ab ove in for mation for each instance .
"New" channels : W ill any area (s) of c oncentrated fl ow be chan nel ized (de ep ened ,
widene d , or stra ighten ed) or otherwise alte red? --No --Yes If o nly sli ghtly
shap ed , see "Swales" in this Part. If creating side ban ks , provid e in formation below .
C'-·
"O c Will de si gn replicate natural ch annel ? Y es No If "no ", fo r ea ch instance Cll --r.n ~ descri be se ction shape & area , fl ow li ne sl op e (mi n . & m ax .), surfaces , an d 100 -year a 0.. 0.. x des ign 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 Februa ry 200 7
Page 16 of 26 APP EN DIX . D: TEC H. DESIGN SUMMAR Y
As Revised February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concegt and Design Parameters I Continued (Page 4 .8)
Stormwater Management Concept (continued )
W ithi n O r Se rv ing Subj ec t Property (Phase, or Site) (con ti nued)
Exis ting channel s {small c re eks}: Are t hese used? --No --Yes
If "yes " provi de the in fo rmation be lo w .
Wi ll small creeks and their floodplains remain undistu rb ed? __ Yes --No How
many d isturbance instances? Identify each planned location :
For ea ch location, describe length and gen eral type of proposed im provement
(includ ing f lo odp la in changes):
For each location , describe sect ion shape & area , flow line slope (m in . & max .),
surfaces , and 100 -year design fl ow .
'C
QJ
::::l c
~ Wa tercourses {and tributaries}: As ide from fringe cha nges , are Regulatory
0 Watercou rses proposed to be altered ? __ No Yes Ex plain be low. ~ --
IJl c Subm it ful l report de scribi ng prop osed c hanges to Re gulatory W atercou rses . Address
QJ exi sting a nd prop osed section size and sha pe , surfa c es , alignme nt , fl ow line changes , E
QJ length affected , and capacity , and prov ide fu ll documentation of analys is procedures > e and data . Is ful l report subm itted ? Y es --No If "no" ex plain :
0..
E -
Q3 c c
C1l A ll Proposed Channel Work : For all proposed channel wor k , provide i nformat ion ..c: u requeste d in next three box es .
If design is to replicate natu ra l channel , identify locati on and leng t h here , and descri be
design in Specia l Des ign section of this Part of Report .
W il l 100 -yea r fl ow be con ta ine d w ith one foot of freeb oard? --Yes --No If
not , ide nt ify locati o n and expla in :
Are ROW I ea se ments sized to conta in channel and re quired ma intenance space ?
--Yes --No If not , identify locati o n(s) and ex pl ai n:
STO RMWAT ER DESIGN GU IDELI NES
Effective Feb ru ary 200 7
Pa ge 17 of 26 APPE NDI X. D: TECH . DESIGN SUMMARY
As Rev ise d February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Dra i na ge Con ce Qt a nd De si gn Param eters l Continued (Page 4.9)
Sto rmwate r Man ageme nt Concept (c o ntin ued)
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
Ex pla in 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 publ ic facility in easement or ROW?
Facility 1: __ Yes No Facility 2 : Y es 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 APPE NDIX . D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUM M ARY
Part 4 -Drainage Conce12t and Desig n Parameters I Conti nued (Page 4 .10)
Stormwater Management Concept (continued)
W ithi n O r Serv ing Subj ect Prop e rty (Phase , o r Site) (c on ti nued)
Do st ructures comply w ith 8 -CS Spe c ifications ? Yes o r no , and explain if "no ":
Fac ility 1;
tJ)
Q)
:;:;
~'O
C1l Q) Facility 2: LL :J c c: :.;:::;
0 c
:;:::; 0 c (J
Q) ~
(jJ For ad di ti on al fac il ities prov ide all same in fo rmation on a separat e sheet.
0
A re park ing areas to be used for dete nti on ? __ No --Yes What is
m axi mum depth due to re qu ired des ign storm ?
Roadside Ditches : Will cu lve rts serve access drivewa ys at road side d itches ?
No x Yes If "yes ", pro vid e info r mation in next tw o boxes . ----
W il l 25-yr. flo w pass w ith out flow ing over driveway in all cases? x Y es No ----
W it hout caus ing flowing or stand ing water on public ro ad wa y? x Yes No ----
Des igns & materials comply with 8 -CS Te chn ica l Spe cifi catio ns? __ x _ Yes --No
Ex pla in any "no " answ ers :
C'-·
tJ)
Cl c
"iii Are cu lv ert s par all el to publi c ro adway align me nt? __ Yes x No Ex plain : tJ) e --
(J tJ)
Q)
2 >-! xi Cree ks at Private Drives : Do pri vate driveways , dr ive s , or streets cross dra inage
C1l wa~s that serve Ab ove-Pro ject areas or are in pub lic ea seme nts/ ROW ?
"O 0
Q) z __ No __ Yes If "yes " prov ide info rmati on be lo w .
tJ)
I :J How many instances ? Descri be locat ion an d prov ide information below .
tJ)
t
Q) Location 1: ~
:J
(J
Q) Locat ion 2 : ~
Location 3 :
For each location enter value for : 1 2 3
Desig n year pass ing w ith o ut to ping trav elw ay? 100 1 00
Water de pth on trave lway at 25 -year fl ow? 0" 0"
Water depth on travelway at 100 -year fl ow? 0 11 0"
For more in stance s de sc rib e lo ca t io n a nd sa m e informatio n on se pa rate sheet.
STORMWA TE R DESIGN GUIDELINES
Effecti ve February 200 7
Page 19 of 26 APPE NDIX . D: TEC H. DESIGN SUMMAR Y
As Revis ed Febru ary 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Co ntinued (Page 4 .11)
Stormwater Management Concept (continued)
Wi t h in Or Serv ing Subject Property (Phase , or Site) (conti nued)
Named Regulato!)l Watercourses {&Tributaries}: Are cu lv e rts propose d o n these
faciliti es? x No __ Yes , then prov ide ful l re port docu me nti ng ass umptions , --criteria , analys is , com puter pro grams , a nd study findi ngs that sup po rt prop osed
des ign(s). Is re po rt provided? __ Yes --No If "no", explai n :
~ Arterial or Ma jor Collector Streets : W ill cu lverts serve these typ es of ro adways? w
Q) x No Yes How m an y in sta nces ? Fo r eac h identify t he .r:::.
<Jl ----
Q) locati on and pro v ide t he information bel ow .
<Jl (ii In stance 1: Q) '-
>-~
I ~ Instan ce 2 :
Instance 3: c
0
o~ Yes or No fo r t he 100-year de sign flow : 1 2 3 z E
x i~ Headwater WSE 1 foot bel ow lowest curb top?
Spread of headwater w it hin RO W or eas em ent?
E
C'-· Ctl Is velocity lim ite d per conditi ons (Table C-11 )? <Jl <Jl g>-o Ex pl a in any "no" an swer(s): ·-c ~ Ctl
0 c
'-0 u :;J
>-Ctl Ctl (_)
~ .Q
-0 Q)
Ctl ..Cl Minor Collector or Local Streets: W ill cu lv erts se rv e th ese typ es of stre ets? 0 ·-'-'-
(_) (_) x No Yes How many instances? for each identify the ·-<Jl -----Q) -g -0 locati on and provide the information be low :
c.. Q) ..... c.. Insta nce 1: Ctl ~
-0 >-Instance 2 : Q) c
<Jl Ctl
:l ..... Insta nce 3 : <Jl 0
t: <Jl
Q) Q)
For eac h instance enter v alue , or "yes " I "no" for ~ 1 2 3 .2! (_)
:l c
(_) Ctl Desig n yr . headwater WSE 1 ft . be low curb top? Q) (ii '-c
<( ·-10 0-yr . ma x . depth at st ree t cro w n 2 fee t o r less? Q)
'-0 Product of velo city (f ps) & depth at crow n (ft) = ? E
'-Is vel ocit y limited pe r con d it io ns (Table C-11 )? 0 ~
Limit of down stream ana ly sis (f ee t)?
Ex pla in any "no " answers :
STORM WA TER DESIG N GUIDELI NES
Effect ive February 2007
Page 20 of 26 APPENDIX . D: TEC H. DESIGN SUMMARY
As Rev ised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
P art 4 -D rainage Conce~t and Design Paramete rs I Continued (Page 4 .12)
Stormwater Management Concept (continued)
Withi n O r Serv ing Subj ect Property (Phase , or Site) (con ti nued)
All Propos ed Cu lverts: Fo r al l proposed cul vert faci li ties (exce pt driveway/roads ide
d itch inters ects ) provide informati on requeste d in next eight bo x es.
Do cul verts and travelways inte rsect at 90 de g rees? --Yes --No If no t ,
identify locat io n(s) an d intersect angle (s), a nd j ustify the des ign (s):
Does drai nage wa y alignme nt chan ge w ithin or near limi ts of cul vert an d su rfaced
approaches thereto? __ No --Yes If "yes " ide nt ify location(s), describe
change (s), and j ustification :
A re flumes o r conduit to dis c harge into c ul ve rt ba rrel (s)? __ No __ Yes If yes ,
identif y locat ion (s) an d provi de justificati o n:
'2
A re flu m es or co nd uit to d ischarge into o r near surface d approach es to cu lvert ends?
Q) --No --Yes If "yes " identify locatio n(s), des cr ibe outfall des ign treatme nt(s):
:::J c
~
0
~
en t
Q)
Is sc ou r/e ro s ion protecti o n prov ided to e nsu re long term stab ility of cu lvert structu ral ~
:::J com po nents , and surfacing at culvert en ds? Yes No If "no " Iden t ify u ----
locations and pro v ide j ustification (s):
Will 100-yr fl ow and sp rea d of backwate r be f ully con tai ned i n street ROW , and /o r
drain ag e easeme nts/ ROW? __ Yes --No if no t , why not?
Do a ppre c ia ble hydra uli c effects of an y culvert exten d downstre am or upstream to
ne ighb o ring land (s) no t e nc om passed in subject property? --No --Yes If
"yes " describe loc at io n(s) and mit iga ti on me asures :
Are a ll culvert design s and materials in co m pl iance wit h 8-CS Te ch. Specificat ions?
--Yes --No If not , ex pla i n in Spe cial Des ign Section of t his Part.
STO RMWATER D ES IGN GU IDELINES
Effect iv e February 200 7
Pa ge 21 of 26 A PPE ND IX . D : TEC H. DESIGN SUMMARY
As Rev ised February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Pa rt 4 -Drainage Concegt and Design Paramete rs I Continued (Page 4 .13)
Stormwater Management Concept (continued)
W ithi n Or Servi ng Subject Property (Phase , o r S ite ) (con ti nued)
Is a bridge included in pl an s for subject property project? --No --Yes
If "yes " provide the foll owing informat ion .
Name(s) a nd functional classification of the roadway(s)?
What drai nage way (s) is to be crossed?
~
Q)
OJ
<J ·;::
CD
A full report supportin g all aspects of the proposed brid ge(s) (stru ctural , 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 descripti o n of planne d tec hniques :
£ Pollution Prevention Si l t fence and inlet fi ltration will serve as the
C1l Plan (SW3P ) main protect i on against stormwat e r pollution. The :::i a established for Contractor shall use a n y other L-project construct ion?
me a n s nece s sary
Q) t hroughout construction . (ii s No x Yes ----
Spec ia l De si gn s -Non -Tradition a l Method s
Are any non-traditional methods (aquatic echosystems , wetland-type detention , natural stream
repli cation , BMPs for water quality , etc.) proposed for any aspect of subject property project?
x No Yes If "yes " list general ty pe a nd location bel ow. ----
Provi de full report about the proposed special design (s) includ ing rat ionale for use and
expected benefits . Report must substantiate that stormwater management objectives will not
be comprom is ed , and that maintenance cost wil l not exceed tho se of tradi tio nal desig n
solution (s). Is rep ort provided? --Yes --No If "no " explain:
STORMWAT ER DESIG N GUIDELINES
Effective Feb ruary 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-handl ing 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 C ity Eng ineer 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 residentia l 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 identifi er): 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 mak ing determinations for time of concentration , was segment ana lysis used ?
x No Yes In approximately what percent of Design Drainage Areas ? %
As to intens ity-duration-frequency and rain de pth criteria for determ ining runoff f lows , were a ny
criteria other than those prov ided in these Gu idelines used ? _x_ No --Yes If "yes "
identify ty pe of data , source (s), and where applied :
For each of the stormwater management features listed below identify the storm return
frequencie s (year) analyzed (or chec ked ), and that used as the bas is for des ign .
Feature Ana lys is Year(s) Design Yea r
Storm drai n system for arterial and collecto r streets
Sto rm drain system fo r local streets
Open channe ls
Swale/buried condu it combi nat ion in lieu of channel
Swales
Roadsid e ditches and culverts serv ing them 2,5 ,10,25,50,100 25
Detentio n faci li ties : sp il lway crest and it s outfall
Detention facil ities : outlet and conveyance st ructure (s)
Deten ti on facili ties : vo lu me when out let plugged
Culverts serv ing private drives or streets
Culverts serv ing publ ic ro adways
Bri dges : provide in bri dge report .
Hydraulics
What is t he range of des ign flow veloc ities as outl ined be low?
Design fl ow velocities ; 25 year Gutters Cond ui t Culve rt s Swa les Channels
Highest (feet pe r second ) 7.49
Lowest (feet pe r seco nd) 5.51
Streets and Storm Drain Systems Provide the summary information outlined below :
Rough ness coefficients used : For st ree t gutters : NA
For cond uit type (s) RCP 0 .013 Coefficients :
STOR MWA TER DESIGN GUIDELIN ES
Effective Feb ruary 200 7
Pa ge 24 of 26 APPEND IX. D: TECH . DESIGN SU MMAR Y
As Revise d Febru ary 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 "n o" 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 V l.F .5.a? --Yes --No
Outside of straight sections , is flow regime w ithin 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 contro l led.
Entrance , friction and exi t losses :
A 0 .5 entrance and ex i t loss coe f ficients are used f or sloped e nd treatment s
and square edged headwal l s with wi ngwa lls .
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDELINES
Effe cti ve February 2007
Page 25 of 26 APPENDIX . D: TECH . DES IGN SUMMARY
As Rev ised Feb ruar y 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4-Drainage ConceQt and Design Paramete rs I Continued (Pa g e 4.17)
Design Parameters (continued)
Computer Software
What com puter software has bee n used in the analysis and assess ment of storm water
management needs a nd /or the devel o pme nt of facility designs pro po sed for subject property
project? List them be lo w , being sure to identify the software na m e and versi o n, the date of the
version, a ny applicab le patches and the publisher
Microsoft Excel Spreadsheet
Part 5 -Plans and SQecifications
Requ iremen ts for subm itt al of con struction drawings and specific at ions do not differ due to use of a
Techni ca l Design Sum ma ry Rep ort . See Section Ill , Paragraph C3 .
Part 6 -Conclusions and Attestation
Conclusions
Add any co ncluding informati on 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 completenes s of the foreg oin g 6 Parts of this Technical
Desiq n Summary Dra inaqe Re po rt by si q nin q and seali nq below .
"This report (plan) for the drainage design of the deve lopment named in Part B was prepared
by me (or under my supervision) in accordance with pro visions of the Bryan/College Station
Unified Drainage Design Gui de lines f or the owners o f 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 app licab l e genera l permits." _ ......... ,....,'
J? L.Q bt~ r-T
" u
Lie~ 1sed Professiona l Engineer
State of Te x as PE N o . q vz~5
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 26 of 26
(Affix Sea l) ---... r-OF r~""t~ -'\ \'.;, \ ,':'· ....... (: __ ,. ,. '.. ~ ··. 4 , ~ ... ]tf-~ ··.-0· if; f*/ ':(;;> .... *
I' .... / ..... ~ · ....
f_••• • •• t ••"I I.••••••••• ...... •:.' •
~ JEFF :RY L. RIJ 8 ERTS 8 •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
D ra in age R e p ort
Du ck Haven S ub d iv is io n, Ph ase 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. Cu lvert _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 i ln/Hr cfs :1n/Hr
c-_!_00 .~_j_~.:Q !..!_ 40 .0_L 20.:Q -?.21 B 9_R%:Q.;~E ,_22 .~_22
100 .0 1 2 .0 10B5 .0 I 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 i cfs
27 .3 B.6 ~.304~.B6 j_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 l ets
12 .53
12 .53
44 .5
25 .1
7/2 1/2 014
dra.xls
Exhibit C-1
Culvert
Culvert Desian Criteria
Culvert Descriptio n Ci rcu lar
Pipe No.
(2) 18" HOPE [Dia . (ft .) Pioes n
1.50 2 0.014
Culvert Analvsis Calculations
Total Flow per Critical Norma l
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 Ou tl et Cul vert
El ev . (Eli) Elev. (ELo) Length
(ft .) (ft _) (ft_)
278 .73 278 .35 45 .00
INL ET CONTROL
H\Nl /D H\NI 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
EL hi Y-To p o f Road / ELh o ~==i~===---~~ _/ ~-----=~ EL1 Proposed Cul ve rt "'----
ELo
Outfall Channel Desian Criteria
Top Lt . Side Rt. Si de 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 CALCULAT IONS Control Type Ou tl et
OU TLET CONTR OL
TW de (de+ 0)/2 ho H ELho
0.92 0.95 1.23 1.23 0.4 9 280 .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. Cont ro l
280 .21 Inlet
280 .39 Inlet
280 .58 Outlet
280 .88 Ou tl et
281 .24 Outlet
281 .69 Outlet
Velocity
(f os\
5.51
5.71
5.95
6.50
7.09
7.49
Freeboard
l ft.\
2.4 8
2.30
2.11
1.81
1.45
1.00
7/21 /2014
culvert 1.x ls
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
MBES I PROJ #: 10 62-00 42
Engineer's Opinion of P robable Construction C osts
Jul y 20 , 2014
Description Unit Quantity Unit Price
Pavin g Construction
Site Preparation (includes clearing & grubb ing) Ac . 1.50 $1 ,500 .00
Earthwork (Excavation and Embankment for P ub lic R OW, L.S . 1,200 $7 .50 Common Area and Lots)
6 " Lime Stabilize d Sub grade (6% by we i ght) S.Y. 1,75 1 $4.00
6" Crushed Stone Base S.Y. 1,532 $10 .5 0
2" HMAC Pavement S.Y. 1,210 $11.50
P aving Subtotal
n· S t Ct ti ramage 1ys em ons rue on
18" RCP P ip e, (ASTM C-76 , CL ill) (Structural Backfill) L.F. 84 $55.00
Ro ck Rip Rap S.Y. 25 $40 .00
Safety E nd 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, C90 9 Cl 200 , Water Line L.F. 425 $25 .00
6 " M .J. Gate Valve EACH 1 $900.00
6" M .J. Ancho r Couplin g 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 si de(> 20 ') E ACH 1 $1 500 .00
Water System Sub total I
Erosion Control Construction
Erosion Control P lan & Sedimentation Control (per Item L.S . 1 $4 ,000 .00 106) (includes monitoring. recor d keeping. and cleanup)
Grass Se eding SY 4,250 $0 .4 8
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 ,0 04 .00
$16 ,086 .00
$13,915.00
$48 ,255
$4 ,620.00
$1 ,000.00
$3 ,600 .00
$9,220
$10 ,62 5 .00
$900.00
$350.00
$1 ,000 .00
$3 ,600 .00
$1 ,000 .00
$1 ,500.00
$18 ,975
$4,000.00
$2 ,04 0 .00
$400 .00
$1,500 .00
$7,940
$84 ,390
The above construction estimate is based on the engin eer 's pr eliminary op inion of prob abl e constructi on cost s . This
estimate constitutes our best j udgment at this time. Please n ote that the engineer does n ot have any control over contractor
or sup plier workload s and the degree to which inflation may affect project cost s. b etween no w 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 ........................... : .... ~
~.lffFER Y L. f-!OBf:FHS ON/: ·,-···: ........................... ""
, ""' ... 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 & BROW NE ENGINEERING/SURVEYI N G , INC. ~ ;B 1008 Woodcreek Dr .. Suite 103 · College Stati on . 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: Reside nti a l
Anticipated number of lots: 3 lots
Notes on surrounding development: T hi s development is located near the exist in g Phase
3 of Duck Haven in South Brazos County.
Water System Analysis
Primary water supply line: Existing 8" lin e o n Canvasback Cove
PIPE2000 (Kentucky Pipe etwork Model)
6.0 gpd (all lots co mbin ed)
Software model:
Average daily flow:
Estimated fire demand: 1,000 g pm (at Junction J-12)
Pipe material:
Max. Velocity (fps)
Conclus ion :
Applicable Exhibits :
Exhib it A
Exhibit B
Exhibit C
PV C (C909)
Desi ned I Re uirement I No tes
82.12 20 min i Fi re 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
Sc he mati c Water System Layout
Static Flow Model Output
Fi re Flow Model Output
Duck Haven , Phase 6
MB ESI #106 2004 2
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EXH IBI T 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 TABULAT ED OU TPUT
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
NUMB ER OF PIPES ................... (p) 2
NUMB ER OF END NODES ............... (j) 2
NUMB ER OF PRIMARY LOOPS ........... (1) 0
NUM BE R 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 DEMA ND 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
NU MBER
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 SYST EM FROM SUPPLY NODES
(-) OUTFLO WS FROM THE SYSTEM INTO SUPPLY NODES
NODE
NAM E
VP-1
NET SYSTEM INFLOW
NET SYSTE M OUTFLOW
NET SYSTEM DEMAND
FLO WRATE
(gpm)
11 . 25
11 . 25
0 .00
11. 25
NODE
TI TL E
***** 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 -CH ECK 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 .1 5 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
8 4 .00
530 .00
TA
DESCRIBED BY
EFFIC I 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 : AL L 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 ZO NES ............ (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
NOD E NUMB ERS
#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
(g pm) (ft)
CV -CHECK VALVE
fLOWRATE
(g pm)
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
(H p )
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 NOD E
NAM E TITLE DEMAND GRADE ELEVATION HEAD PR ESSURE
(g pm) (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 I MUM JUNCTION MINIMUM
NUMBER PRES SURES NUMB ER PRESSURES
(ps i ) (p s i )
------------------------------------------
VP -1 83 .58 J -2 82 .12
V E L 0 c I T I E s
PIPE MAXIMUM PIPE MIN I MUM
NUM BER VELOCI TY 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 Te x as 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
Regard ing the waiver request , explain how:
1. There are specia l circumstances or cond itions affecting the land involved such that strict application of the
subdivis ion regulat ions 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 Un ified Development Ordinance.
NIA
Fee in lieu of s idewalk construction is be ing requested because of the following condition (i f applicable):
1. I An alternative pedestrian way or multi -use path has been or w ill be prov ided outside the righ t-of-way ;
2. I The presence of unique or unusual topographic, vegetative , or other natura l condit ions exist so that strict
adherence to the sidewalk requirements of the UDO is not physically feas ible or is not in keep ing 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 . Imminen t 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 Maste r Plan ;
Rev ised 4/14 Pag e 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
i nsta ll ed 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, ta ngent 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 ded ications must be
reviewed by the Parks and Recreation Advisory Board and documentation of their
recommendation provided prior to being scheduled for P&Z Commiss ion 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 ov erall
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 suffic ient 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 show ing
depth and grades . One sheet must show the overall water layout of the subd iv ision .
(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 dra in age
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 Dra inage 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 w ith 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 C ity 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 w ill be requesting the corrected Final Plat to be submitted in digital form if ava ilable 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 pr ior to
issuance of a development permit.
Print Form
Rev ised 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 M c C L UR E & BROW NE EN GI NE ERI N G /S U R V EYI N G , I NC . ~;II 1008 Woodcreek Dr .. Suite 103 ·College Station . Tx. 77845 · (979) 693-3838 Engineer Reg . No . F-458
Survey Reg . No. 10 1033-00
CrTY or C OLLEGE STATION
Home of Texas A &M University •
FOR OFFl l/}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 subm itta l.
D New Project Subm ittal
D Incomp lete Project Submittal -documents needed to complete an application. Case No.:
~ Existing Project Submittal. Case No .:
Project Name Duck H ave n 6
Contact Name Jeff Rob ertson
~~~~~~~~~~~~~~~-
Phone Number 693-3838
~~~~~~~~~~~~~~
We are transmitting the fo ll owing for Planning & Development Services to review and comment (check all that apply ):
D Comprehensive Plan Amendment
D Rezoning Applicat ion
D Conditional Use Permit
D Prelim in ary Plan
D Final Plat
D Development Plat
D Site Plan
D Specia l District S ite Plan
D Specia l District Build ing I Sign
D Landscape Plan
D Non-Residential Architectural Standards
D Irrigation Plan
D Variance Request
D Development Permit
D Deve lo pment Exaction Appeal
D FEMA CLOMA/CLOMR/L OMA/L OMR
D Grading Plan
D Other -Please specify below
INFRASTRUCTURE AND ENGINEERING DOCUMENTS
All infrastructure documents must be submitted as a comp le te set.
The following are in clude d in the complete set:
D Comprehensive Plan Amendment D Waterli ne Construction Documents
D TxDOT Driveway Permit D Sewerline Construction Documents
D TxDOT Util ity Perm it 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 S ummary Report
MEES! No . 10 620042
PART 1 -Exec utive Summary Report
Sectio n l -Contact Informati o n
Project D esigner: McC lur e and Browne En g in eering and S urveyi ng, In c.
l 008 Woodcreek Dri ve, Suite l 03
Co ll ege Station , TX 77845
979-693-3838
Project D eve lo per : Smi lin g Mall ard D eve lo pm e nt , Ltd .
3608 East 29th Street
Bryan, Texas 77802
Section 2 -General In fo rm ation an d P ro ject Location
T hi s de ve lo pment is the 6th phase of a multi phase s ubdivi s io n. Phase 6 con s ist s of 3 lots . T he phase is
locate d in the Duck Haven Village w hi c h is a lo ng FM 2 154 (We llb o rn R oad). Phase 6 is located at the
int e rsectio n of Retriever Run and Canvas back Cove. T hi s ph ase of th e subd iv is io n has been analyzed as
part of the P hase 3 Drainage Rep o rt submitted in Septe mb er, 2006. The deve lopment is e nt ire ly located
w ithin the Brazos Co un ty limi ts.
T he project s it e is in th e P each C ree k watershed. According to th e F lood In surance Rate Maps for
Brazos Co unty, Texas and in corporated 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.
C ulv ert pipe calculations are shown with t hi s s ubmi ttal.
T he culverts a nd ditches peak runoffs were fo und us in g th e R atio nal Method. A runoff coeffic ie nt (c) of
0.50 was used for resident ial areas s ince a ll th e lots ha ve an area greater than l acre . T he cu lverts and
ditc hes were anal yzed usi ng Microsoft Excel spreads he ets w hi c h utili zes Manning's Equatio n for the
a nal ys is.
Secti on 3 -Refe rence
Exhi bitA
Exh ibit B
Exh ib it C-1
Exh ibit C-2
Technical D es ig n Summary
D rai nage Area Map
Drain age Area Calcul atio ns
Cu lvert Ca lculati o ns
Drainage Report
Indian Lakes, Phase 18
Dra in age Repo rt
EXHIBIT A
Technical Design Summary
Duck Haven Sub d ivis ion, Phase 6
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
The Cities of Bryan and College Station bot h 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.
Idea lly 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
appl ications that are in process with either City : plat(s), s ite plans , zoning requests ,
STORMWATER DE SIGN G UIDELINES
Effect ive Fe bru ary 2007
Page 1 of 26 A PP ENDI X . D : TECH . DE S IGN S U MMARY
A s 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 with in 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. Coo rdination 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 agenc ies such as Brazos County
government , the Brazos River Autho rity , the Texas A&M University System , the
Texas Department of Transportat ion , 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."
ST OR MWATER DESIGN GUIDELINES
Effect iv e Febru ary 2007
Page 2 of 26 A PPENDI X . D : TE C H. DE S IG N SUMMAR Y
A s Revi sed Feb ruary 200 9
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 Consult ing Firm(s): Other contacts :
Developer I Owner I Applicant Information
Developer I Applicant Name and Address: Phone and e-mail:
Smilin g Mallard Development, Ltd . (979) 846-4384
3608 East 29th Street
Bryan , T exas 77802
Property Owner(s) if not Developer I Applicant (&address): Phone and e-mail :
Project Identification
Development Name : Duck Haven, Ph ase 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 (p hase) or Project Area:
(see Section 11 , Paragraph B-3a)
Duck Haven, Phase 6
If subject property (phase) is second or later phase of a proje ct , describe general status of all
earl ier 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 .
Genera l 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 (pa ge 2.2)
Project Identification (continued)
Roadways abutting or w ithi n Project Area or
subject property :
Retriever Run
A butting tracts , platted land , or built
developments :
Duck Haven Phase 4
Named Regulatory Watercourse (s) & Watershed (s): Tributa ry 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 Pla t File#: ____ _ Final Plat File#: ______ Da te : ____ _
Name : P e ndi ng Ap p r ova l Status and Vol/Pg : Pen ding 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 DES IGN GUIDELINES
Effective February 2007
Partic ipa nts :
Pa ge 4 of 26 APPE N D IX . D: TECH . DESIGN S U MMARY
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 , co ntracts , or approvals .
Non-jurisdiction
City Needed ?
Yes No x
Coordination with
Brazos Cou nty
Needed?
Yes No x
Coordinatio n with
T x DOT Needed ?
Yes No_x_
Coordination with
TAMUS Nee ded?
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 , summari ze status of efforts toward that ob 'ective in s aces below.
Entity
US Army Crops of
Engineers
No x Ye s
US Environmental
Protection Agency
No _x_ Ye s
Texas Comm ission on
Environmental Qua lity
No Yes_x _
Brazos Rive r
Authority
No x Yes
Permitted or
Approved?
STORMWATE R DESIGN GUIDELINES
Effective February 2007
Status of Actions (include dates)
A Stormwater Pollution Prevention Plan must be
imp l emented prior to t h e start of construction
according to TPDES Ge n eral Permit No. TXRlSOOOO .
Page 5 of 26 APPEND IX . D: TECH . DESIGN SUMMARY
As Revi sed Februar y 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 , impervi ous 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
cons i 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 Y es
FEMA Floodplains
Is any part of subject property abutting a Named Regulatory Watercourse
(Se ction 11 , Pa ragra ph 81) or a tributary thereof? No x Yes
Is any part of subject prope rt y in floodplain
area of a FE MA-reg ulated watercourse?
Encroa chme nt(s)
into Floodplain
areas planned?
No x
No x
STORMWATER DESIGN GU IDELINES
Effect ive February 2007
Page 6 of 26
Ye s Rate Map 48041C0375E
APPE NDI X . 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 includi ng subject property?
Yes Reference the study (&date) here, and attach copy if not already in City files .
Du ck Haven Su b division ; 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 ho w plan for subject property will comply
t herewith.
Stormwater Detention has been provi d ed for this phase with a
d etention pon d developed with a previ ous phase .
x No Yes Do ex isting topographic features on subject property store or detain runoff? ----Describe them (include approximate size , volume , outfa ll , 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 Tab le B-1 in Appe ndix B)
__ Detention is required . Need must be evaluated . __ Detention not required . --
What decision has been reached? By whom?
De t ent i on study du ring Phase 3 .
If the need for How was determination made?
Type 1 Detention Detention was required and is provided for the e n tire
must be evaluated: Duck Haven Subdivision. However, Phase 6 does not require
any additiona l detention.
STORMWATER DESIG N GUIDELINES
Effective February 2007
Pa ge 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 (Pa ge 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 spl its 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 upla nd 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 concen trat ed , 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 dra i n 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 tributa ry? No x Yes
Describe leng th 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 DES IGN GUIDELINES
Effective Febru ary 2007
Page 8 of 26 APPENDIX . D : TECH . DESIGN SUMMARY
As Revis ed Fe bru ary 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 % Cre ated by? _x_ pla t , o r
easements instrument. If instrument(s), describe their provis ions .
exist for any --
part of
pathway (s)?
No --x Yes --
Where runoff must cross lower properties , describe characteristics of abutting lower
property (ies). (Ex isting watercourses ? Easement or Consent aquired?)
Pathway
Areas
Describe any built or im proved dra inage facilities ex isting 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 des ign? x No Yes If yes , ex pla in : ----
ST ORMWATE R DE SIGN GUIDELINE S
Effective Febru ary 2007
Page 9 of 26 A PPENDI X. D: T ECH. DE SIGN SUMMAR Y
As Revised Feb ruary 2009
SECTION IX
AP PE NDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drai nage Conce12t a nd Des ign Parameters I Start (Page 4 .1)
Sto rmw ater Management Concept
Discha rg e(s) From U p land 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 cu lverts to Phase 6.
Proposed ditches in Phase 6 will convey the water to the existing pond.
Discha rg e(s) To Lo w er Property(ies) (Section II , Paragraph E1)
Does project include drainage features (existing or future ) proposed to become public via
platt ing? No x Yes Separate Instrument? x No Yes -- --
Per Guidelines refe rence above , how will Establishing Easements (Scenario 1) runoff be discharged to neighboring x Pre-development Release (Scenario 2) property (ie s)? --
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 , expla in how discharge wi ll differ from pre -
deve lopment condit ions at the property line for each area (or po int) of re lease.
If Scenario 2 , or Combination are to be used , has proposed design been coordinated w ith
owner(s ) of receiving property(ies)?
documentation.
STORMWATER DESIGN GUIDELINES
Effe ctive Februa ry 2007
No
Pag e 10 of 26
--Yes Explain and provide
APPENDIX . D: TECH . DE S IGN 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
· ga ining Basins or Watersheds and acres sh ifting :
Will project result
in shifting runoff
between Basins or between f--:--:---,------,-,.----.,.--,--,.----,------=::::...,._=-------:7"'""=---,------------1
Watersheds ?
x No
Yes
How will runoff from Project
Area be m it igated to pre-
development conditions?
Select any or all of 1, 2 ,
and/or 3 , and explain below.
1. __ With faci lity (ies ) involving othe r development pro j ects .
2. __ Establishing featu res to serve overall Project Area .
3. _x_ On phase (or site ) project bas is within Project Area .
red facilit (type & location of facility ; design drainage area se rved ; relationship to siz
Project : (Attached Exhibit# __ _,
2. For Overall Project Area
3. By phase (o r site) project: Describe planne d mitigation measures for phases (or sites ) in
subsequent q ue stions of this Part .
aquatic echosystems proposed? __ No Yes
?
Are other Best Manage nt Practices for reduc ing stormwate
No Y es Su rize type of BMP and
If design of any runoff-handl i cil itie s dev iate from p
Spec ifications , check ty acility(i es) and explain in later qu
Conduit elemen ts
__ Ditches __ Inlets __ Valley gu tters __
STORMWATER DESIGN GUIDELINES
Effective Februa ry 2007
________ Other
Pa ge 11 of 26 APPE NDI X. D TECH . DES IGN 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 A rea , 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 ea r lier 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
Usua l 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 Ex hibit# __ ~
Are longitud inal culvert ends in compliance with B-CS Standard Specifications?
x Y es No , then ex plain:
rsections or otherwise , do valley gutters cross arte ri al or collector stre
STOR MWATER DES IGN GUIDELINES
Effect ive Febru ary 2007
Yes If yes explain :
Page 12 of 26 APPEND IX. D: TECH. DES IGN SU MMARY
As Rev is ed Febru ary 200 9
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)
Usua l
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 flood ing 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 .
::;
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-0 ~ c -0 ro ID
-e .~ ac
0 .r:::. u
-~ '§
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::::i Q)
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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 latera ls 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-w ide ):
STORMWATER DESIGN GUIDELINES
Effect ive February 2007
Page 13 of 26 APPE NDI X . 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
(incl ude 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._
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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 (i ncluding 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 easem en t(s) or platted drainage
ROW in all instances? x Yes No If "no " explain:
STOR MWATER DESIGN GUIDELINES
Effective February 2007
Pag e 14 of 26 APPEND IX. D: TECH . DESIGN SUMMARY
As Revised February 20 09
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)
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~
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Q)
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0
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en
Q)
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xi
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0
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~ en
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>. c cu ...._
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0 ..... c
Q)
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~
A re roadside ditches used? __ No _x_ Y es If so , provide the fo ll owing :
Is 25 -year flow contained with 6 inches of freeboard throughout ? _x_ Y es No
Are top of banks separated from road shoulders 2 feet or mo re? _x_ Ye s No
Are all ditch sections trapezoidal and at least 1.5 feet deep? Y es x No
Fo r any "no " answers provide loca t ion (s) and expl ain :
Al l Ditche s are V-shaped and a t least 2' deep
conduit is beneath a swale , provide t he follow ing 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 , m inim
an d ma ximum slopes: slopes , des ign storm :
v ided (to sw ale , into conduit):
Is 100 -year des ign flow containe
If "no " explain :
Space for 100-year storm
Swa le Surface type ,
and maximum slope ·
ROW
Conduit Type and size , m i
slopes , des ig n storm :
Y es
W idth
um and maxi mum
In lets Describe ow conduit is lo aded (from streets/storm dra i ns , inl
escribe how maintenance access is p ro vided (to swale , into condu :
No
No
STO RMWATER DE SIGN GUID ELI NES
Effective Febr uary 20 07
Page 15 of 26 A PPENDI X. D: TEC H. DES IGN SUMMAR Y
As Rev ised 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? Y es 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'-·
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.0 c
:J Q.)
o E :S Q.) ·~ ~
Q.)
tJ) '-
_gi 0
~ s
tJ) 0
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Q.)
IJ)
.0
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Cl..
tJ) IJ) c Q.)
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E
I
Q.)
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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 chan nelized (deepened
wide or straightened ) or otherwise altered? __ No __ Yes If only s · tly
shaped , s "Swales" in this Part . If cre ating side banks , provide informat i elow .
Wi ll design repl1 e natural channel? Y es No If "no "
describe section sha & area , flow li ne slope (min . & ma x .), s
des ign flow , and amount reeboard :
Instance 1:
Instance 2 :
Instance 3:
STORMWATER DES IGN GUIDELINES
Effective Febru ary 2007
Pa ge 16 of 26 APPEND IX. D: TECH . DESIGN SUMMARY
As Revis ed 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 und isturbed? __ Ye s __ No
man disturbance instance s? Identify each plann ed location :
For each loc tion , describe length and general type of proposed improv.
(includi ng floo lain changes ):
For each locat ion , 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 __ Ye s Explain below .
en c Submit full report describing proposed c n s to Regulatory Watercou rses. Address
~ existing and proposed section si ze 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 bo xe .
If design is to replicate nat al channel , identify location a length here , and describe
design in Special Design ecti on of this Part of Report .
Will 100-year flo be contained with one foot of freebo ard ?
not , identify loc ion and explain :
No If
I easements sized to contain channel and required mainte nance spa
No If not , identify location (s) and explain :
STORMWATER DESIGN GUIDELINES
Effective Febru ary 2007
Page 17 of 26 APPE NDI X. 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 APPEND IX . D: TECH . DESIGN SUMMARY
As Revised Febru ary 20 09
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 APPEND IX. 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 (P hase , or Site) (continued )
Named Reaulatorv Watercourses l& Tributaries : Are culverts proposed on these
fac ilities?~ No ....____Yes, then provide full report documenting assumptions ,
criteria, ana lysis , computer programs , and study findi ng s 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 insta nces? 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: Wil l culverts serve these types of streets? 0 ·-..__ ..__
(.) (.) No x Yes How many in stances? 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 o r 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 ND IX . D: TECH . DESIGN SUMMARY
As Rev ised Febru ary 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Pa ge 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 inte rsects ) provide information requested in next eight boxes.
Do cu lv erts 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 stab ili ty of culvert structural 2
:i components , and surfacing at culvert ends? x Ye s 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 prope rty? x No Yes If ----
"yes " describe location(s) and mitigat ion measu res :
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 DESIG N GUIDELINES
Effective February 2007
Page 21 of 26 APPE NDI X. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Pa ge 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 " expla in :
Is a Stormwater
Pollution Prevention
Plan (S W3P)
established for
project construction?
No _x_Yes
Provide a general descriptio n of pla nned techniques :
S il t fence a nd inlet f il t r ation wil l serve as the
main protection against s tormwater pollution. The
Co n tractor s h a l l use any other means n e cessary
thr oughout con struction .
Special Designs -Non-Traditional Methods
Are any non-traditional methods (a quatic echosystems , wetla nd-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
Effe cti ve February 200 7
Page 22 of 26 APPE NDI X. D: TECH . DESIGN SUMMARY
As Revised Feb rua ry 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 __ Channe l 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 he r/his des1
above provide "yes " no ", action date , and staff na me :
1)
2 )
3)
4 )
Design Parameters
Hydrology
Is a map (s) sh owing all Des ign Drainage Areas provided? x Y es No
Briefly summarize the range of applications made of th e Ratio na l Formula :
For the Rational Formula we assumed residentia l 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 wh ich the Rational Formula
has been applied? 7 · 1 acres Location (o r ide ntifier): Ex. Culvert
STORMWATER DESIGN GUIDELINES
Effecti ve Febru ary 2007
Pag e 23 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Revised Febru ary 2009
SECT ION IX
AP PENDIX D -TECHN ICA L DESIGN SUMMARY
Part 4 -Drai nage ConceQt and Design Parameters I Continued (Page 4 .15)
Desi gn Parameters (continued)
Hydrology (continued)
In making determinations for time of concentration , was segment ana lys is used ?
x No Yes In approximately what percent of Desig n Dra inage Areas ? %
As to intensity-duration-frequency and rain depth c ri teria for determining runoff flows , were any
criteria other than those provided in these Guidel ines used? _x_ No Y es If "yes " --
identify type of data , source (s), and where app li ed:
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 A nalys is Year(s) Design Y ear
Stor111 u ~tem for arterial and collecto r streets --------Storm drain system furltr ~ -------Open channels .-
~
Swa le/buried condu~ lieu of channel --------~ --------Roads ide d itches and culverts serving them 2,5 ,10,25,50,100 25
D~ilities: spillway crest and its outfall ---------Detention fac i litie~ conveyance structure (s) ---------Detention fac ilities : volume when ~ed -----~
Culverts serving private drives or ~ -----r-..
Culverts serv i ng ~ __ ways ---------~vide in bridge report. ---------Hydrau lics
What is the range of design f low velocities as out lined below?
Design flow velocities ; 25 year Gutters Condu it Cu lverts Swa les Channels
Highest (feet per second ) 7.49
Lowest (feet per second ) 5 .51
Streets and Storm D ra in Systems Provide the summary information outlined below :
Roughness coefficients used :
For conduit t ype (s) RCP 0.013
STOR MWATER DESI GN GUID ELIN ES
Effective Febru ary 2007
For street gutters :
Page 24 of 26
NA
Coefficie nts :
A PPENDI X. D: TEC H. DESIGN SUMMAR Y
As Revised Febr uary 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 fricti on 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? __ Y es __ 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 contro l?
All culverts wil l be inlet controlled.
Entrance , friction and exit losses :
A 0 .5 entrance a nd exit loss coefficients are used for sloped end treatments
and s quare edged headwalls with wingwalls .
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDELINES
Effective Februa ry 2007
Pa ge 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 ident ify the software na me 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 subdivis i on repo r t .
Attestation
Provide attestat ion to the accuracy and c omplete ness of the foregoing 6 Parts of this Technical
DesiQn Summ ary 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/Co llege 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 Te xas PE No . qq7 ~ 5 ,, ~-.... 9 4 7 4 5 ./('-:; r ~o . (, ~\) . /"-1 .,, 'I ~·· .. 1 Cf;.15'-..-.~v.;
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 26 of 26
\ '\" .~. "• .. ,, .. "';.\.!)' ""
APPENDIX. D: TECH . DESIGN SUMMARY
As Revised February 2009
Drainage Re port
EXHIBITB
Drainage Area Map
D uc k H aven S u bdi v is io n, Phase 6
EXHIBITC
Runoff and Culvert Calculations
Drain age Report
Duck Haven Subdivision, Ph ase 6
EXHIBITC
Runoff and Culvert Calculations
Drain age Report
Du c k Haven Subdivision, Ph ase 6
EXHIB IT C-1
Rational Formula Drainage Area Calculations
Du ck Haven Phase 6
NO. IAC. 0.4 0.5 1 0.9 ft . lft. ft. ft . ft/s !min 1min In/Hr cfs In /Hr cfs In/Hr cfs In/Hr cfs l ln/Hr cfs In /Hr cfs
E<S.~":".'!. L?,!QL .9c..O<J LD.Qf--9,~L-~~5 -~Ql __ ~9 __ !_!~~t.Qf.Jo o --~'~t . .!l,~L!9,9L2,~~-~,~----_?_l 3I_3 ---~~}QZ!_Jlc B6 .]!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 19.7 1 11 . 15 22.3T 12 .53 25. 1
7/21120 14
dra .xls
Exhibit C-1
Culve rt
Culvert Description
(2) 18" HOP E
n C riteria
No .
Pi s
2 0 .0 14
C ul ve rt Ana l sis Calculations
Tota l Flow per Critical
De sign
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 Pha se 6 -Canvas Ba c k 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 CALC ULATIO NS Control Type Outlet
OUTLET CO NTROL
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 .7 2
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
O utlet
Velocity
5 .95
6 .50
7 .09
7.49
2.11
1.81
1.45
1.00
7121/201 4
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 fo r Planning & Development Services to review and comment (check all that apply):
D Comprehensive Plan Amendment
D Rezoning Application
D Conditional Use Permit
D Prel iminary 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 Appe al
D FEMA CLOMA/CLOMR /L OMA/LO MR
D Grading Plan
0 Other -Ple ase 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 Tx DOT Utility Permit [Z] Street Construction Documents
[Z] Drainage Letter o r Report D Easement App lication
D Fire F low Analysis D Other -Please specify
Special Instructions :
10/10 Print Form
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Des ign Parameters I Cont inued (Page 4.10)
Stormwater Management Concept (continued)
Wi t h in Or Se rving Subj ec t Property (Phas e , or Si te ) (continued )
tr uctures comply with B-CS Spec ifications ? Yes or no , and exp lain if "no ":
Facility 1;
If)
OJ :;:;
=TI ~OJ Facility 2: LL ::i c c~
0 c
~o c u
OJ ~
For addi tio nal faci l it~ide all same in fo rmatio n on a se~heet. Qi
0 ~s to be used for detention? __ No _Y es~
due to requ ired des ign storm?
Ro ad side Di tch es : W ill culverts serve access drivewa ys at roadside ditches?
No x Yes If "yes ", prov ide information in next two boxes . -- --
W ill 25-yr. flow pass without flowing over driveway in al l cases? x Y es No ----
W ithout caus ing flowing or stand ing water on publ ic roadway ? x Yes No ----
Designs & m ate ri als comply with B-CS Techn ica l Specifications ? _x_ Yes --No
Ex plain any "no " answers :
('-·
If)
Ol c
If) Are cu lverts paralle l to pub lic roadway alignment? x Ye s No Ex pla in : If) e ----
u If)
OJ 2 >-! x j C ree ks at Pr ivate Dri v es : Do priva te driveways , drives , o r streets cross dra inage
C1l ways that serve Above -Project areas or are in public easements/ ROW?
-a 0 x No Yes If "yes " provide inform at ion be low. OJ z ----If)
I ::i How many instances? Describe location and provide info rmation below . .El All three lots will need ditch crossing culverts to (ij Locat ion 1: 2 access Canvasback Cove. None will cross the ditch east
::i u of the proposed culvert o n Canvasback , so none of the
OJ Locatio n 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
Des ign year passing without top ing trave lway ?
W ater depth on t ravelway at 25-year flow?
Water depth on t ravelway at 100-yea r flow?
For more instances describe location a nd same informatio n on separate sheet.
STORMWATER DESIGN GUIDELI NES
Effective Febru ary 200 7
Page 19 of 26 APPENDI X. D: TECH. DESIGN SUMMARY
As Revis ed February 200 9
~
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