HomeMy WebLinkAbout15-11FOR OFFICE USE ONLY
CAS E NO .: \VSj_l
DATE SUBM ITTE D : 0/ ·bf·......,15~-
:::F~..,.· ~: ___ ---C rrY O F C o ll.EGE STATION
Home of Texas A &M Univmity •
(Check one) 0 Minor
($700)
FINAL PLAT APPLICATION
0 Amending
($700)
[X] Final
($932)
0 Vacating
($932 )
0 Replat
($932 )
Is this plat in the ET J? ~ Yes O No Is this plat Commercial D or Residentia l [XI
./ MINIMUM SUBMITTAL REQUIREMENTS:
-0"" $700-$932 Final Plat Applicat ion Fee (see above).
O $233 Waiver Request to Subd ivision Regulations Fee (if appl icable).
D $600 (minimum ) Development Perm it Application I Public Infrastructure Review and Inspection Fee . Fee is
1 % of acceptable Eng ineer's Estimate for public infrastructure , $600 minimum (if fee is > $600 , t he ba lance is
~ue pr ior to the issuance of any plans or development perm it).
~ Applicat ion completed in full. This application form provided by the City of College Station must be used and
,;nay not be adjusted or altered. Please attach pages if additional information is provided .
,-gJ ~ix (6 ) folded copies of plat. (A signed mylar original must be submitted after approval.)
~wo (2 ) copies of the grading , dra inage , and eros ion control plans with supporting drainage report .
WT"wo (2) copies of the Public infrastructure plans and supporting documents (if appl icable).
D Copy of original deed restrictions/covenants for replats (if applicable).
~ Title report for property current within ninety (90 ) days or accompanied by a Nothing Fu rt her Cert ifi cate
current w ithin ninety (90) days . The report must include app licable information such as owne rsh ip, li ens ,
encumbrances , etc .
~ Paid tax certificates from City of College Station , Brazos County and College Station l.S .D.
gi-he attached Fina l Plat checklist w ith all items checked off or a brief exp lanation as to why they are no t.
NOTE: A mylar of the approved preliminary plan must be on file before a fina l plat application will be cons idered
complete . If the mylar is submitted with the final plat application , it shall be cons idered a submitta l fo r the
prel iminary plan project and processed and reviewed as such . Until the mylar has been confirmed by staff
to be correct , the final plat appl ication w ill be considered incomplete .
Date of Optional Preapplicat ion or Sto rmwater Management Confe rence .:...:N.:.:..:.YA--'----------------
NAME OF PROJECT Indian Lakes -Phase 21
ADDRESS Nea r intersection of Mesa Verde Drive and Kach ina Cove
SPECIFIED LOCATION OF PROPOSED PLAT:
Nea r intersection of Mesa Verde Drive and Kachina Cove I
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary contact for the project):
Name Travis Martinek E-ma il travis@clarke wyndham.com
Street Address 3608 East 29th Street, Suite 100
C ity Bryan State Te x as Z ip Code 77802
Phone Number (979) 846-4384 Fax Number (979) 846-1461 ----------------
Rev ised 4/1 4 Page 1 of 9
PROPERTY OWNER'S INFORMA 110N (All owners must be identified . Please attach an additional sheet for multiple
, owners):
Name Smiling Mallard Development, Ltd. E-mail travis@clarkewyndham .com
Street Address 3608 East 29th Street, Suite 100
C ity Bryan State Te x as Zip Code _7_7_8_02 ___ _
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._'f,_:4 __ and Page No . _N_'.IA_
Total No. of Lots 12 ------R-0-W Acreage _2._7_7_8 ____ _ Total Acreage _2_2_.9_6_3 _______ _
Existing Use _v_a_c_an_t ____________ _ Proposed Use Single-Family Residentia l
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? L Yes [X] 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 wh ich 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 C ity platting approval(s) and you are requesting the
application be reviewed under previous ordinance as applicable?
[Z1 Yes
No
If yes , provide information regarding the first approved application and any related subsequent applications (prov ide
additional sheets if necessary):
Project Name : Indian Lakes Subdivision
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
Re uested waiver to subd ivision re ulations and reason for same (i f a licab le :
YA
Regarding the waiver request, expla in how :
1. There are special circumstances or conditions affecting the land invo lved such that strict application of the
[Asubdivis ion regulations will deprive the applicant of the reasonable use of his land .
2. The waive r is necessary for the preservation and enjoyment of a substantia l property right of the app li cant.
IN/A
3. The gran ti ng of the waiver will not be detrimental to the publ ic health , safety , or welfare , or injurious to other
property in t he area , or to the C ity in adm inistering subdivision regulations .
IN/A
4 . The granting of the wa iver will not have the effect of preventing the orderly subdivision of other land in the area in
accordance w ith the provisions of the Unified Development Ordinance .
NIA
Fee in lieu of sidewalk construction is be ing requested because of the following cond ition (i f applicab le):
1. D An alternative pedestrian way or multi-use path has been or w ill be prov ided outside the right-of-way ;
2. C The presence of unique or unusual topograph ic , vegetative , or other natural conditions exist so that strict
adherence to the sidewalk requi rements of the UDO is not physically feas ible or is not in keeping with the
purposes and goals of the UDO or the City's comprehensive Plan ;
3. 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. Exist ing streets constructed to rural section that are not identified on the Thoroughfare Plan w ith an estate I
rural context ;
5. C 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 . D 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 . D 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:
NIA
NOTE : A waiver to the sidewalk requirements and fee in lieu of s idewalk construction shall not be considered at the
same time by the Planning & Zoning Commission .
Total Linear Footage of
Proposed Public:
NIA Streets
NIA Sidewalks
NIA Sanitary Sewer Lines
NIA Water Lines
NIA Channels
NIA Storm Sewers
NIA Bike Lanes I Paths
Parkland Dedication due prior to filing the Final Plat:
ACREAGE:
NIA
NIA
NIA
NIA
---
OR
No. of acres to be dedicated + $ __ N_'!,_:A. __ development fee
No . of acres in floodplain
No. of acres in detention
No . of acres in greenways
FEE IN LIEU OF LAND :
NIA No. of SF Dwell ing Units X $ NIA = $ NIA
NIA (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 beha lf LIEN
HOLDERS identified in the title report are also considered owners and the appropriate signatures must be provided as
described above .
Sign~UJ Date
Revised 4 /14 Pa ge 4 of 9
Existing
~
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.)
~ Drawn on 24 " x 36" sheet to scale of 100' per inch .
~ V ic inity map wh ich includes enough of surrounding area to show general location of subject property in
relationsh ip to College Station and its City Limits . No scale required but include north arrow.
~ T itle Block with the following information :
~ Name and address of subdivider , recorded owne r, planne r, engineer and surveyor.
~ Proposed name of subdivision . (Subd ivision name & street names will be approved through Brazos
County 911 .)
~ Date of preparat ion .
~ Eng ineer's scale in feet.
~ Total area intended to be developed .
~ North Ar row .
~ Subdivision boundary ind icated by heavy lines .
~ If more than 1 sheet, an index sheet showing entire subdivis ion at a sca le of 500 feet pe r inch or
larger.
~ All applicab le certifications based on the type of final plat.
~ Ownersh ip and Ded icat ion
~ Surveyor and/or Engineer
~ City Eng ineer (and City Planner, if a minor plat)
~ Planning and Zoning Commission (delete if minor plat)
~ Brazos County Clerk
~ Brazos County Commissioners Court Approval (ET J Plats only )
~ 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 .
~ If using private septic systems , add a general note on the plat that no pr ivate sewage fac ility may be
installed on any lot in this subdivision without the issuance of a license by the Brazos County
Health Unit under the provis ions 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 .
~ Location of the 100-Year Floodplain and floodway , if applicable , according to the most recent available
data .
~ Lot corner ma rkers and survey monuments (by symbol) and clearly tied to bas ic survey data.
~ Matches the approved preliminary plan or qualifies as minor amendments (UDO Section 3.3 .E.2).
The location and description with accurate dimensions , bearings or deflection angles and radi i, area , cen ter
angle , degree of curvature , tangent distance and length of all curves fo r all of the
following : (Show exist ing items that are intersecting or contiguous with the boundary of or forming a
boundary w ith the subdivision , as well as , those within the subdivis ion).
Proposed
~ Streets. Cont inuous or end in a cul-de-sac, stubbed out streets must end into a temp
turn around unless they are shorter than 100 feet.
Publ ic and private R.O .W. locations and widths. (All exist ing and proposed R.O .W .'s
sufficient to meet Thoroughfare Plan .)
Street offsets and/or intersection angles meet ordinance .
Rev ised 4 /14 Page 8 of 9
. Existing
[g]
[g]
[g]
[g]
Proposed
[g]
[g]
[g]
[g]
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 .
[g] 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 :
[g] 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).
Sewer Design Report.
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 .)
Water Design Report and/or Fire Flow Report.
Water line plan showing fire hydrants, valves , etc . with plan and profile lines showing
depth and grades . One sheet must show the overa ll water layout of the subdivision.
(Utilities of sufficient size/depth to meet the utility master plan and any future growth
areas .)
Storm drainage system plan with contours , street profile , in lets , 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 .
[g] Detailed cost estimates for all public infrastructure listed above sealed by Texas P.E.
[g] Letter of completion for public infrastructure or guarantee I surety in accordance with UDO
Section 8.6.
[g] Drainage Report with a Technical Design Summary .
[g] Erosion Control Plan (must be included in cons tructi on plans).
[g] All off-site easements necessary for infrastructure construction must be shown on the final plat with a
volume 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 .
[g] Are there impact fees associated with this development? D Yes [g] No
Impact fees must be paid prior to building permit.
[g] Will any construction occu r in TxDOT rights-of-way? D Yes [g] No
If yes, TxDOT permit must be submitted along with the construction documents .
NOTE: 1. We will be requesting the corrected Final Plat to be submitted in digital form if available prior to filing
the plat at the Courthouse .
2. If the construction area is greater than 5 acres , EPA Notice of Intent (NOi) must be submitted prior to
issuance of a development permit.
Print Form
Revised 4/14 Page 9 of 9
TO :
CLARKE & WYNDHAM
REAL ESTATE INVESTMENT SERVICES
TRAVIS MARTINEK
3608 East 29th Street, Suite 100
Bryan, Texas 778 02
Office: (979 ) 846 -43 84 Fax: (979) 846-1461 Ce ll : (979) 229-9877
TRANSMITTAL SHEET
DATE :
1/13/2015
COMPANY: TOTAL NO. OF PAGES INCLUDING COVER :
CS Ping & Dvlpmt Serv See below
FAX NUMBER : PHONE NUMBER:
RE :
Indian Lakes-Phase 21 Final Plat and Construction Plans
0 URGENT 0 FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE
NOTES/COMMENTS:
Attached are the following:
• Final Plat Application and Checklist
• Tax Certificates (refer to Phase 19 submittal)
• Title Reports (refer to Phase 19 submittal)
• Drainage Report
• 6 -24 "x36 " copies of the Final Plat
• 2 -24 "x36 " copies of the construction plans
DATE :
TO :
FROM :
SUBJECT:
April 1, 2015
C ITY OF COLLEGE STATION
Home of Texas A&M University "
MEMORANDUM
Travis Martinek , via ; travis@clarkewyndham .com /
Mark Bombek, Staff Planner
INDIAN LAKES PH 21 (FP)
Staff reviewed the above-mentioned final plat as requested . The following page is a list of staff
review comments detailing items that need to be addressed . Please address the comments and
submit the following information for further staff review and to be scheduled for a future Planning
& Zoning Commission meeting :
One (1) 24 "x36 " copy of the rev ised final plat ;
Thirteen (13) 11 "x17" copies of the revised final plat ;
One (1) Mylar of the revised final plat (required after P&Z approval);
One (1) copy of the digital file of the final plat on diskette or e-mail to
pdsdigitalsubmittal@cstx .gov .
Upon receipt of the required documents for the Planning & Zoning meeting , your project will be
considered formally filed with the City of College Station . Please note that this application will
expire in 90 days from the date of this memo , if the applicant has not provided written response
comments and revised documents to the Administrator that seek to address the staff review
comments contained herein . If all comments have not been addressed your project will not be
scheduled for a Planning & Zoning Commission meeting . Your project may be placed on a
future agenda once all the revisions have been made and the appropriate fees paid. Once your
item has been scheduled for the P&Z meeting , the agenda and staff report can be accessed at
the following web site on Monday the week of the P&Z meeting .
http ://www .cstx .gov/pz
Please note that a Mylar original of the revised final plat will be required after P&Z approval and
prior to the filing of the plat. If you have any questions or need additional information, please call
me at 979 .764 .3570 .
Attachments: Staff review comments
PC : Jeff Robertson, McClure & Browne Engineering/Surveying , via ; ./
jeffr@mcclurebrowne .com
P&DS Project No . 15-00900011
Planning & Development Services
P.O. BOX 9960 • 110 1 TEXAS AVENUE · COLLEGE STATIO N · TEXAS · 77842
TEL 979.764.3570 ·FAX. 979.764.3496
cstx.gov/devservices
STAFF REVIEW COMMENTS NO. 2
Project: IND/AN LAKES PH 21 (FP) -15-00900011
PLANNING
1. Repeat-Provide a note to the Final Plat stating that lots 1 and 12 on Makawee Lane should
only take access from Makawee Lane .
2 . Please note that you may be required to submit paid tax certificates if they are not current
prior to the filing of your plat.
3. Please note the county is still reviewing response to comments at this time. Comments will
be sent out as soon as they are received .
Reviewed by : Mark Bombek Date : 03-25-2015
ENGINEERING COMMENTS NO. 2
4. Remove the 25 ' PDE & 16 ' PUE shown on the Final Plat. FYI ... The easements needs
to be dedicated by separate instrument or blanket easement and filed prior the approval
of the construction plans .
5. Please show the volume/page for the existing P .U.E .'s outside the Plat boundary . It
currently is shown as just P.U.E. which may be misinterpreted as it being dedicated with
this plat.
6 . The note regarding of compaction of fill or engineered slab of lots that have greater than
2 feet of fill still needs to be added on the Final Plat. This note is still required even if a
building permit is not going to be required through the city of College Station .
7. Revise and check the engineering estimate , the water system estimate is currently
showing C909 pipes instead of C900 PVC 's .
8. Please double check your 100-storm year Intensity equation . I'm getting a different
value . Are you guys using B/CS's Table C-1 when determining the Intensity? Or is
something else being used? Since all the years appear to follow the equation except for
the 100-year storm event.
9. Please provide a letter regarding Acknowledging City standards .
Reviewed by : Kevin Ferrer Date: 03-30-2015
Home of Te x as A&M University
---............ __________ ~C I TY OF COLLEGE STATION<-----------------Hom e of Texas A&M University " ·.:=
MEMORANDUM
DATE : February 11 , 2015
TO : Travis Martinek, via ; travis@clarkewyndham .com
FROM : Mark Bombek, Staff Planner
SUBJECT: INDIAN LAKES PH 21 (FP)
Staff reviewed the above-mentioned final plat as requested . The following page is a list of staff
review comments detailing items that need to be addressed . Please address the comments and
submit the following information for further staff review and to be scheduled for a future Planning
& Zoning Commission meeting:
One ( 1) 24 "x36 " copy of the revised final plat ;
One (1) revised set of construction documents;
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 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
Pla11ni11g & Development Services
P .0. BOX 9960 • l l 01 TEXAS AVENUE • COLLEGE STATION • TEXAS • 77842
TEL. ')79.764.3570 ·FAX. 979.764.3496
cst>1.gov/devservices
STAFF REVIEW COMMENTS NO. 1
Project: Indian Lakes Ph 21 (FP) (15-00900011)
PLANNING
1. Provide a note to the Final Plat stating that lots 1 and 12 on Makawee Lane should only take
access from Makawee Lane.
2 . Please Note: County is still review documents for this phase . Comments will be sent out as
soon as they are received .
3 . Please Note that any changes made to the plans that have not been requested by the C ity
of College Station , must be explained in your next transmittal letter. Any additional changes
on these plans that the City has not been made aware of will constitute a completely new
review.
4. Please Note that you may be required to submit paid tax certificates if they are not current
prior to the filing of your plat.
Reviewed by : Mark Bombek Date : 02-06-2015
ENGINEERING COMMENTS NO. 1
1. Show a Private drainage easement on the common area between lots 6 & 7 .
2 . Add a note stating whose responsibility it is to maintain and stating that fences ,
grading , and landscape cannot impede the flow of the private drainage easement.
3. Add a note regarding requirement for compaction of fill or engineered slab for
affected lots that have greater than 2 feet of fill on final plat and construction
documents. Also list the lots that would require this .
4 . Show the future 10 ' PUE along the rear of the PUE of Lots 7-8 totaling 20 ' PUE .
5. Dedicate the 16 feet PUE & 25 PDE easements outside the plat by separate
instrument.
6 . Move WS 2.01 to the common lot boundary.
7. Show a water service line ending on the common lot boundary for lots 5 & 6 on
Makawee Lane.
8 . Submit a drainage report that is sealed and signed.
9 . Check your Rainfall Intensity's equation for the 100 storm event.
10 . Please provide calculations showing that the water surface elevation in the ditches
are at least 6 "below the top ditch during a 25-year storm .
11. Provide Cost estimate , and B/CS Standard details .
Reviewed by : Kevin Ferrer Date: February 9 , 2015
SANITATION
1. Sanitation is ok with this project.
Reviewed by : Wally Urrutia Date: January 28 , 2015
MEMORANDUM
DATE : January 26, 2015
TO : Travis Martinek, via; travis@clarkewyndham .com
FROM: Mark Bombek , Staff Planner
SUBJECT: INDIAN LAKES PH 21 (FP)
Thank you for the submittal of the required documents for your Final Plat -Residential
application. Kevin Ferrer, Graduate Engineer, 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 Monday , February 9 , 2015 . If you have questions in the meantime , please feel free to
contact us .
PC : Jeff Robertson, McClure & Browne Engineering/Surveying , v ia;
jeffr@mcclurebrowne .com
P&DS Project No . 15-00900011
Pla11ni11g & Development S1t1 ·vices
P.O. BOX 9960 • 110 1 '11".XAS AVENUE · COLLEGE STATION · TEXAS . 77842
TEL. 979.764.3570 ·FAX. 979 .764.34 96
cst><.gov/devservices
MEMORANDUM
DATE : January 16, 2015
TO : Travis Martinek, via ; travis@clarkewyndham.com ~
FROM : Jason Schubert, AICP Principal Planner
SUBJECT : INDIAN LAKES PH 21 (FP)
I reviewed the above-mentioned Final Plat -Residential application and determined it to be
incomplete. The following is the preliminary list of items needed to complete the submittal.
Please submit the following information so this application can be forwarded for review:
Submit a water/fire flow report for the proposed plat. The area in this plat is not
part of the original Indian Lakes Master Plan approved in 2002 but part of the
Partners in Habitat Preservation Tract 1 Master Plan application that was
submitted in December 2007 and approved in February 2008. Therefore , as
stated during the Preliminary Plan review, the water/fire flow requirements
adopted in 2004 apply to this plat.
Please be aware that if this application is not completed before Monday, March 2 , 2015, it will
expire and a new applicat_ion and fees will be necessary to continue the platting process.
If you have any questions or need additional information , please call me at 979 . 764 .3570.
PC : Jeff Robertson , McClure & Browne E.?€fineering/Surveying , via;
jeffr@mcclurebrowne.com v
P&DS Project No. 15-00900011
Pla11ni11g & D evelopment Services
P.O. BOX 9960 • l 101 TEXAS AVENUE · COLLEGE STATI ON · TE..XAS • 77842
TEL. 979.764.3570 ·FAX. 979.764.3496
csti<.gov/devservices
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t
21 1 •
6 'nl) i \ • i l
Zon i n~ D i str i cts
R -4 Multi-Famliy BPI BLBines Pa Industrial POD Planned Oll'Velopment District
R Ru11 I R -6 Higlt D•ns ity Multi-Fa.mily NAP a.tural Area.s Prot•cted I PC W o lf Pttn Cr Dttv. Corr idor
E E st1ttt M p Manuf1c:tur eil Home P11 C-3 Light Commerc:ill G-1 C0t1t ~ octhg1t1t
RS R·ntrlct•d Subu bin 0 Offlc:tt M-1 Llg ht lndu1trlll G-2 Tt1n1ltlon1 I Oi'lhgltlt
GS Gen1ul Sut>u bin SC Sut>urb1n Commtttclal M-2 Hvy l ndu ttlal N'G-3. Rt$ idential otthgltlt
R-18 Sing l e F1mily Residential GC General Commercial C-lJ C-0 llege and Llnivers ity ov Co id Ove lay
D Duplex C l Commercial-lndutlrial R& D Research and Development ROD Redl!velopment District
T Townhousit BP B usiness Pa1 t P-MlJD Planned Mixed-Lise Development KO Krenn Tap Over lay
vr IN OIA N LA KES P H 2 1 Case : FINA L PL AT
DEVELOPME NT REVIEW 15-11
INOIAN LAKES PH 21 Case : FINAL P LAT
OEVELOPM E N REVIEW 15· 11
DRAINAGE REPORT
FOR
INDIAN LAKES SUBDIVISION
PHASE 21
January 2015
P REPARED FOR:
SMILING M ALLARD D EVELOPMENT, L TD .
3608 E AST 29 TH STREET
B RYAN, T EXAS 77 802
9 79-846-4384
.tvIBESI.No. 10620048
MBMl:H McCLURE & BROWNE ENGINEERING /SURVEYING, INC. I r -...._.. 1008 Woodcreek Dr., Su ite 103 ·College Stat ion , Tx. 77845 · (979) 693-3838 En ginee r Reg. No . F-458
Survey Reg . No . 101033-00
Indian Lakes Subdivision, Phase 21
Stormwater Management Technical Design Summary Report
MBESI N o. I 0620048
PART 1 -Executive Summary Report
Section 1 -Contact Information
Project Designer: McClure and Browne Engineering and Surveying, Inc.
1008 Woodcreek Drive , Suite 103
College Station, TX 77845
979-693-3838
Project Developer: Smiling Mallard Development, Ltd.
3608 East 29th Street
Bryan, Texas 77802
Section 2 -General Information and Project Location
This development is the 2P1 phase of a multi-phase subdivision. Phase 21 consists of 12 lots. The
phase is located in the Indian Lakes Village which is down Arrington Rd. approximately 2 miles from
the Arrington Rd ./William D. Fitch Pkwy intersection. Phase 21 lies in the northeast portion of the
subdivision near the intersection of Mesa Verde Drive and Chaco Canyon Drive . The entire
subdivision has been analyzed in the initial drainage report submitted in September, 2000. The
development is lo cated within the ETJ of College Station.
The project site is in the Peach Creek watershed. According to the Flood Insurance Rate Maps for
Brazos County, Texas and incorporated area, Map Number 48041C0350E effective May 16 , 2012 ; no
portion of this property is loc ated in a 100-year flood hazard area.
Culvert pipe and ditch sizing calculations are shown with this submittal.
The culverts and ditches peak runoffs were found using the Rational Method. A runoff coefficient ( c) of
0.50 was used for residential areas since all the lots have an area greater than 1 acre. The ditches along
the proposed roadways are uniform throughout the project. The ditch profiles along all proposed
roadways were determined using the largest ditch drainage area found for Phase 21. The culverts and
ditches were analyzed using an Excel Spreadsheet which utilizes Manning's Equation for the analysis.
Section 3 -Reference
Exhibit A
Exhibit B
Exhibit C-1
Exhibit C-2
Exhibit C-3
Technical Design Summary
Drainage Area Map
Rational Method Calculations
Cu lvert Sizing Calculations
Ditch Capacity Calculations
Drainage Report
Indian Lakes , Phase 21
Drainage R ep ort
Indian Lakes , Phase 21
EXHIBITS
Drainage R epo rt
Indian Lakes, Phase 2 1
EXHIBIT A
Technical Design Summary
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
The Cities of Bryan and College Station both require storm dra inage design to follow these
Unified Stormwater Design Guidelines. Paragraph C2 of Section Ill (Administration) requires
submittal of a drainage report in support of the drainage plan (stormwater management plan)
proposed in connection with land development projects , both site projects and subdivisions.
That report may be submitted as a traditional prose report , complete with 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 substant ial confo rmance 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
"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
addit ion 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
d igitized. In addition , electronic versions of the report forms may be obta ined from the City .
Requirements for the means (medium) of submittal a re 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
requ ired 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 this
Appendix. Brief statements should be included in the forms as requested ,
but add itional 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 a reas listed below.
Ideally it will include one or more paragraphs about ea ch item .
1. Name , address , and contact information of the enginee r s ubm itting th e report , and
of the land owner and developer (o r applican t if not the owner or developer). The
date of submittal should also be included .
2 . Ident ification of the size and general nature of the proposed project , includ ing any
proposed project phases. Th is paragraph should also include reference to
applications that are in process with either City : plat(s), site plans , zoning requests ,
STORMWATE R DES IGN GUI DELI NES
Effe ctive Feb ruary 2007
Page 1of26 AP PENDI X . D: T EC H . DES IGN SUMMARY
As Rev ised Feb ru a ry 20 0 9
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, includi ng 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 :
ex isting land cover; how and where stormwater drains to and from neighboring
properties; ponds or wetland areas that tend to detain or store stormwater; existing
creeks, channels , and swales crossing or serving the property; all existing drainage
easements (or ROW ) on the property, or on neighboring properties if they service
runoff to or from the property.
5. The general plan for managing stormwater in the entire project area must be
outlined to include the approximate size, and extent of use, of any of the following
features: storm drains coupled with streets; detention I retention facilities; buried
conveyance conduit independent of streets ; swales or channels; bridges or culverts ;
outfalls to principal watercourses or their tributaries; and treatment (s) of existing
watercourses. Also , any plans for reclaiming land within floodplain areas must be
outlined.
6. Coordination and permitting of stormwater matters must be addressed. This is to
include any specialized coordination that has occurred or is planned with other
entities (local , state , or federal). This may include agencies such as Brazos County
government , the Brazos River Authority, the Texas A&M University System , the
Texas Department of Transportation , the Texas Commission for Environmen tal
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 ma in report (and its length), including any maps , drawings or
construction documents, should be itemized. An example statement might be :
"O ne __ -page drainage report dated
construction drawings ( __ sheets) dated
___ -page specifications document dated
the drainage report for this project."
one set of
____ , and a
comprise
STORMWATER DES IGN GUIDELINES
Effective Fe bruary 2007
Pag e 2 of 26 APPENDI X. D: TECH . DESIGN SUMMARY
As Revised Fe bruarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Start (Pag e 2 .1)
Engineering and Design Professionals Information
Engineering Firm Name a nd Add ress : Ju risdiction
City: Bryan
McClure & Browne Engineering/surveying , Inc . x Co ll ege Sta t io n 1008 Woodcreek Drive , Suite 103
College station , Texas 77845 Date of Submittal :
(979)693 -3838
Lead En gineer's Na me and Conta ct lnfo .(p hon e , e-mai l, fax): Oth e r:
Jeffery L. Robertson , P .E .
Sup portin g Engi nee ring I Cons ult ing Fi rm(s): Other contacts :
Developer I Owner I Applicant Information
Deve lo per I Applica nt Name and Address : Ph one and e-m ail:
Smiling Mallard Development , Ltd . ( 979) 846 -4384
3608 East 29th street
Bryan , Texas 77802
Property Owner(s) if no t Developer I App licant (&address ): Ph one and e-mail :
Project Identification
Develo pment Na me : Indian Lakes , Phase 21
Is s ubj ect prope rty a s ite pro ject , a sing le-p hase su bdi v ision , or part of a m ul t i-p hase su bd iv isio n?
Multi -phase Subdivision If multi-phase , subj ect property is phase 21 of
Legal de scription of s ubj ect property (p hase) or Project Area:
(see Section II , Parag ra ph B-3a)
Indian Lakes , Phase 21
If subject property (phase) is second or la ter phase of a project, describe gene ral stat us of all
earl ier phases. For mo st recent earl ier phase Include submitta l a nd review dates .
The project is the 21st phase of a multi phase subdivision. At this time the first phase has
been built. Phase 1 was submitted in September , 2000 and consisted of 58 lots . The most
recent phase submitted was Ph . 19 .
Genera l Location of Proj ect Area , or s ubject property (phase ):
Project site is located near the intersection of Mesa Verde Drive and Chaco Canyon Drive
in College Station , Texas .
In City Li m its ? Extraterritoria l Jurisdicti on (acreage):
Bryan : acres . Bryan : Co ll ege Sta t ion : 31. 52
College Stat ion : acres . Acreage Outside ET J:
STORMWATER D ESIGN GUIDELINES
Effecti ve February 2007
Pag e 3 of 26 APPENDI X . D : TECH . DESIGN SUMMAR Y
As Rev ised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration Con tinu ed (page 2 .2)
Project Identification (continued)
Roadways abutting or within Project Area or
su bject property :
Mesa Verde Drive & Chaco Canyon Drive
Abutting tracts , platted land, or bui lt
developments :
Indian Lakes Phase 5 , Indian Lakes Phase 19 ,
& Undeveloped Land
Na med Regu latory W atercourse(s) & Watershed(s): Tributary Basin (s):
Phase 21 is located in the Peach Creek Watershed . The neare s t tributary is Peach Creek S .
Tributary 7 .2 (See FEMA Map 48041C0350E).
Plat Information For Project or Subject Property (or Phase)
Pre li m inary Plat Fil e#: ____ _ Final Plat Fi le #: Date : -----------
Name: Pending Approval St at us and Vo l/Pg : Pending Ap p roval
If two plats, sec
Sta t us :
Zoning Information For Project or Subject Property (or Phase)
Zo ni ng Type : Existi ng or Proposed? Case Cod e : _____ _
Case Date ____ _ Status :
Existin g or Proposed? Zo ning Type: Case Cod e : ------
Case Date ____ _ Status :
Stormwater Management Planning For Project or Subject Property (or Phase)
STORMWATER DESIGN GUIDELINES
Effective February 2007
Partic ipants :
Page 4 of 26 APPENDI X. D : TECH . DESIGN SUMMAR Y
As Revis ed Februarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Pa rt 2 -P roject Adminis t ration Co nt inued (page 2.3)
Coordination For Project or Subject Property (or Phase)
N ot e : For any Coordination of stormwater matters indicated belo w , attach documentation
describ ing and s ubstantiating any agreements, understandings , contracts , or approvals.
Non-jurisd icti on
City Needed?
Yes No x
Coordi nation with
Brazos County
Needed?
Yes No x
Coordi nation with
TxDOT Needed?
Yes No x
Coord ination with
T AM US Needed?
Yes No x
Permits For Project or Subject Property (or Phase)
As to sto rmwater management, are perm its required for the prop osed work from any of the entities
listed be low? If so , summarize status of efforts toward that ob "ecti ve ins aces below.
Entity
US Army Crops of
Engineers
No x Yes
US Environmental
Protect ion Agency
No x Yes
Texas Commission on
Environ mental Quality
No Yes x
Brazos River
Authorit y
No x Yes
Permitted or
A
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 5 of 26
Statu s of Act ions (in cl ude dates)
APPENDIX . D : TECH . DESIGN SUMMAR Y
As Revised Februarv 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 , includ ing extent of impervious cover?
Existing undeveloped land (Dense tree cover) . Existing impervious cover is
approximately 0 sf .
Site
Development
Project
(select all
applicable)
Subdivision
Development
Project
_x_ Construction of streets and utilities to serve one or more platted lots .
__ Construction of streets and utilities to serve one or more proposed lots on
lands represented by pending plats.
Describe
Nature and
Size of
Proposed
Project
Site projects : building use(s), approximate floor space , impervious cover ratio .
Subdivisions: number of lots by general type of use , linear feet of streets and
drainage easements or ROW.
This phase of the subdivision includes 12 lots . The development
consists of approximately 1 ,593 LF of streets with 16 ' PUE on each
side of the streets ROW .
Is any work planned on land that is not platted
or on land for which platting is not pending?
x No Yes
FEMA Floodplains
Is any part of subject property abutting a Named Regulatory Watercourse No x Yes
(Section II , Paragraph B1 ) or a tributary thereof?
Is any part of subject property in floodplain
area of a FEMA-regulated watercourse?
Encroachment(s)
into Floodpla in
areas planned?
No x
No
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 6 of 26
Yes x Rate Map 48041C03SOE
APPENDIX . D: TECH. DESIGN SUMMARY
As Revised Februarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Property Characteristics Continued (Page 3.2)
Hydrologic Attributes of Subject Property (or Phase)
Has an earlier hydrologic analysis been done for la rger area including subject property?
Yes
x
Reference the study (&date) here , and attach copy if not already in City files .
Indian Lakes Subdivision ; September , 2000
Is the storm water management pl an for the property in s ubst antial conformance with the
earlier study? Yes x No If not , expla in ho w it differs .
No ·ect property is not part of m ul t i-phase project , describe stormwater manageme
plan for roperty in Part 4 .
If property !§. part lti-phase project, provide overvie w of storm management plan
for Project Area here . operty will comp ly
th erew ith .
Do ex istin g topogra phi c features on subject property store or deta in runoff? _x_ No Yes
Describe them (inclu de approximate size , volume , outfall , model , etc).
Any known drainage or flooding prob lems in areas near subject property?
Identify:
x No Yes
Based on locatio n of study property in a wate rshed, is Type 1 Detention (flood contro l) needed?
(see Tab le B-1 in Appendix B)
__ Deten tion is required . _x_ Need must be evaluated . __ Detention not required .
What decis io n has been reac hed? By whom?
Detention study during Phase 1 .
If the need for How was determi nat ion made?
Type 1 Detention
must be evaluated : Detention was required and is provided for the entire
Indian Lakes Subdivision . Phase 21 does not require
any additional detenti on .
STORMWATER DESIGN GUIDELINES
Effe ctive February 2007
Page 7 of 26 APPEN DI X . D: TECH. DESIGN SUMMARY
As Revised Februarv 2009
SECTION IX
APPENDIX D -TECH NI CAL DESIG N SUMMARY
Part 3 -Pro ~erty Characteristics l Co nt inu ed (Page 3.3)
Hyd rolog ic Attributes of Subject Property (or Phase) (co nt in ued)
Does subject property straddle a Watershed or Basin divide? x No Yes If yes , --
desc ri be sp lits belo w . In Part 4 describe des ian conce pt fo r handlina this . ----W ate rshed o r Basin Larger acreage Lesse~
--------------~ '-
----------r---._
--------------I---
Above-Proj ect Areas (Section II , Pa rag raph 8 3-a)
Does Project Area (project or phase) receive runoff from up land areas? __ No x Yes --
S ize (s ) of area(s) in acres : 1) 7 .05 2) 3) 4)
Fl ow Characteristics (each instance) (overland shee t , s ha llow concent rat ed, recognizab le
co ncentrated se ction(s ), small creek (non-regulatory), regu latory Watercou rse or tributary);
Overland flow to proposed ditch lines on Phase 21 streets .
Flo w determ ination: Outline hyd ro logic met hods and ass umptions :
The Rational Method was used for flow calculat i ons and the post development
land was treated as large acre residential tracts .
Does storm runoff drain from public easements or ROW o nto or across s ubject property?
_x_ No --Yes If yes , describe facilities in easement or ROW :
Are changes in runoff characte ri st ics s ubj ect to c ha nge in f utu re? Exp lai n
No , upstream land is already developed .
Conveyance Pathways (Sectio n II, Paragrap h C2)
Must runoff from study property drain across lower properties before reac hing a Regulato ry
W atercourse o r tri butary? No x Yes
Describe le ngth an d characte ris t ics of eac h conveya nce path way(s ). In clud e ow nership of
property(ies ).
Runoff from Ph . 21 will leave the phase and be discharged into existing
tributaries of Peach Creek . The property is a future phase
of the Indian Lakes Subdivision .
STORMWATER DESIGN GUIDELINES
Effe ctive February 2007
Pag e 8 of 26 APPENDI X. D: TECH . DESIGN SUMMAR Y
As Re v ise d February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Property Characteristics Co ntinue d (Pa ge 3.4)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Conveyance Pathways (continued)
Do dra inage
easements
exist for any
part of
pathway(s)?
es , for what part of length? % Created by? __ plat , or
instrument. If instrument(s ), describe their provisions .
x No
Pathway
Areas
Nearby
Yes
Whe re runoff must cross lower p erties, describe c harac ristics of abutting lower
property(ies). (Existing watercourse ~ Easement or Co en t aquired?)
Desc ribe any built or im pr ed dra in age facil ities existing nea e property (culverts ,
bridges , lin ed channels uried conduit , swa les , detention ponds, tc).
Drainage >----------------------------------->< Facilities Do any of these have hydrologic or hydraulic in f luence on pro posed stormwater
design? _x_ No __ Yes If yes , explain :
STORMWATER DESIGN GUIDELINES
Effective February 2007
Pa ge 9 of 26 A P PENDI X. D : T ECH. DESIGN SUMMARY
As Revis ed Fe bru a rv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Start (Page 4.1)
Stormwater Management Concept
Discharg e(s) From Upland A rea(s)
off is to be re ce ived from upla nd a reas , wha t desig n dra in age features will be used t
accomm it and insure it is not blocked by f uture deve lop ment? Desc rib e fo
f low section , or 1 e point.
Discharge(s ) To Lower Prope rt y(ies) (Sectio n II , Pa ragra ph E1 )
Does project incl ud e drainage features (existing or future) proposed to beco me public via
platting? _x_ No __ Yes Separate Instrume nt? x No Yes
er Guideli nes refere nce abov e, how will
ru ff be discha rged to neighbori ng
prop (i es)?
__ Es tabli shing Ease me nts (Scenario 1)
__ Pre-development Release (Scenari 2)
Com bination of the two Scenari
Scenario 1. If ease ments are pro posed , describe w here nee ded , and pro vid e stat
on each . (Atta ed Exhibit# )
Scenario 2: Provid e general de rip tio n of how release(s) wil e managed to pre-develo pm ent
conditions (dete nt ion , sheet f low , p ial ly concentrated , et .. (Attached Ex hib it# )
Co m bination: If com bination is pro sed , expla in how harge will differ f rom pre-
development co nditions at the pr erty line for each area (o oint) of release .
If Scenario 2, o ombination a re to be used , has propose d design bee n coor ·
owner(s ) of r e iv ing property(ies)? No Yes Explain and pro · e
documen
STORMWATER DESIGN GUIDELINES
Effe ctive Feb ruary 2007
Page 10 of 26 APPENDI X. D : TECH. DESIGN SUMMARY
As Revised Feb ruarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Pag e 4 .2)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project
· gai nin g Bas ins or W atersheds and acres shi ftin g :
Wi ll project resu lt
in s hifting runoff
betw ee n Bas in s or be twe e n f-:-:-.,.,-----,----,,----~-,-----,,-----:-:----='"""-<::::---:-~--::7"'""""---:-::---:--~~---,--~-=----,--1
W at e rsheds?
x No
Yes
Ho w w ill runoff f rom Project
Area be mitigated to pre-
dev e lopment co nd it ions?
Se lect any or all of 1, 2 ,
an d/or 3 , and ex plain below .
1. __ With fac ility(ies ) invo lvin g other de velopment proj ects .
2 . __ Esta bli s hi ng featu res to serve overall Proj ect Area .
3 . _x_ O n phase (or s ite) proj ect bas is wi thin Pro j ect Area .
ared faci lit (type & location of f acil ity; des ign drainage a rea served ; rela t ionsh ip to siz
Project : (Att ached Exhibit # )
3 . By phase (or s ite) pro ject: Describe planned mitigatio n meas ures for phases (or s ites ) in
sub sequent qu estions of th is Part .
aq uatic echosystems proposed? __ No Yes
?
nt Practices for reduc ing st ormwate
Su r ize type of BMP and
If des ig n of any run off-ha ndl in cilities devi ate fro m p isions of B-CS T ec hnica l
aci lity (ies) a nd expla in in later q
Cond uit ele m ents
__ Ditc hes __ Inl ets __ Vall ey gutte rs __
STORMWATER D ESIGN GUIDELINES
Effecti v e Febru ary 20 07
_______ Other
Page 11 of 26 AP PENDI X. D : TECH . D ESIGN SUMMAR Y
As Rev ised Februa rv 200 9
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)
W ill Project Area in clude bridge(s) or culvert(s)? __ No _x _ Yes Id e nti fy type and
general size an d In which phase(s).
Culvert #1 -2 24 " RCP Pipes on Makawee Lane
Culvert #2 -2 30 " RCP Pipes on Chaco Canyon Drive
· /reten ti on serves (wi ll serve) overall Project Area , describe how it re la tes t
phase or site pr · h sical loca ti o n, con veyance pat hwa y(s), constru · q uence):
Ide ntify w hethe r eac h of the types of drainage fea tu res lis ted below a re inclu ded , extent of use ,
and general characteristics.
Typ ica l shape?
V-Shape
Surfaces?
Grass
Steepest side slopes :
4 :1
Usual front s lopes :
4:1
Usua l back slopes :
4 :1
Flo w li ne slopes: least. __ o_. 6_5_%_ Typical dista nce from travelwa y : 11 '
typica l __ v_a_r _i e_s_ g rea test_-"-3_,_. 1=5,_,%'--
(Attached Ex hi bit # )
Are lo ngitudinal cu lvert ends in compliance with B-CS Standa rd Specifications?
x Yes No , the n explain :
rsections or ot herwise , do val ley gu tte rs cross arterial o r co ll ector stre
STORMWATER DESIGN GUIDELINES
Effective February 2007
Yes If yes explain :
Pag e 12 of 26 APPENDI X. D : TECH. DESIGN SUMMARY
As Revised Februarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.4)
Stormwater Management Concept (continu ed)
With in O r Serving Subject P rop erty (Phase , or Site) (cont inued)
C'-·
-0
Q)
Usual
Are 1 ets recessed on arteria l and col lector streets?
identify here a nd why .
Greatest
Yes
Will inlets captu 10-year design stormflow to preve nt flooding of · tersections (arterial
wi th arterial or co lle or)? __ Yes __ No If no , expl · where a nd why not.
~ Will in let s ize and placemen revent exceeding allo wa e water spread for 10-year
03 desig n storm th roug hout site ( hase)? __ Y No If no , exp lain . ~
::i
Ol
-g 'O
C\J Q)
-e .£ ac 0 .r:. (.)
~~
·~
en a;
Q)
I-v;
Yes No Are inlets and
OJ W ill 100-yr stormflow b onta ined in comb ination of ROW a buried conduit on .< who le le ngt h of al l str. ets? __ Yes __ No If no , des "be whe re and why.
for cu rb , g utter , a nd inlets co m ply with B-CS Technica l Specific ·ons?
No If not, describe difference(s) and attach justification.
No Yes
Are downstream soffi at or below upstream soffits?
Yes __ N __ If not , expla in w here and w hy :
If not , exp la in where
Leas ount that hydraul ic
grade line · elow gutter line
(system-wide):
STORMWATER DESIGN GUIDELINES
Effective Febru a ry 2007
Pag e 13 of 26 APPENDI X . D : TECH . DESIGN SUMMAR Y
As Revi se d Fe bruarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Cont inu ed (Page 4 .5)
Stormwater Management Concept (continued)
W ithin O r Serv ing Subject Prop e rty (Pha se, or Si te) (co ntinued )
al 0
CJlZ
::i i xi
CJ)
(1)
Descri be wate rcourse(s), or system(s) rece ivi ng system disc harge(s) below
(inc lude design discharge velocity, and angle between conve rg ing flow line
For each outfall abov , what measures a re taken to
receiving and all ilities at juncture?
1)
2)
swa le(s) situated a long property lines between properties? __ No
Num r of instances : For each instance answer the fo ll owing questio
ments (includ ing low-fl ow flumes if a ny):
4: Will 100-yea r desi storm ru noff be contained wit hin easeme nt(s
ROW in a ll inst ces? Yes No If "no" exp lain :
STORMWATER DES IGN GUIDELINES
Effective February 2007
Page 14 of 26 APPENDI X. D: TECH. DESIGN SUMMARY
As Revised Februarv 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continued (Page 4.6)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase , or Site) (continued)
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Are roadside ditches used? __ No __ x _ Yes If so , provide the following :
Is 25-year flow contained with 6 inches of freeboard throughout? _x_ Yes
Are top of banks separated from road shoulders 2 feet or more? _x_ Yes
Are all ditch sections trapezoidal and at least 1 .5 feet deep? Yes
For any "no " answers provide location(s) and explain:
All Ditches are V-shaped and at least 2 ' deep
x
conduit is beneath a swale , provide the following information (eac h instance).
Is 100-ye design flow contained in conduit/swale combination?
If "n o" expla · :
r storm flow? ROW Easement
Swale Surface ty , minimum Conduit Type and size , minim
and maximum slopes: slopes, design storm :
Inlets Describe how condui ·s loaded (from streets/star drains, inlets by type):
Is 100-year design flow containe
If "no" explain:
ROW Easement
Conduit Type an d size , mi
slopes, design storm :
Inlets Describe ow conduit is loaded (from streets/storm drai ns , inl
Yes
escribe how maintenance access is provided (to swale , into condu '
No
No
No
No
No
STORMWATER DESIGN GUIDELINES
Effe ctive February 2007
Page 15 of26 APPENDI 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 4.7)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase , or Site) (continued)
c
C1l
Ci. E x
0 w .;::
"yes " provide the follow ing inform at ion for each instan ce :
15 CJ) Is 100-year design w contained in swale? Yes
c Cll within drainage ROW . __ Yes __ No Explain "no " swers : .; ~I t--~~~~~~~~~~--~~~~~~~~~~~~~~~~~~~----.
u Access nee access is provide·
Cll .._ 0
; z 1 x I t--~~~~~~~~~~~~~~-----+-~~~~~~~~~~~~~~----<
~ Instance 2 Describe general location , ap
Cll ·c C'-·
:::i CJ)
.0 c
::; Cll
o E
£ ~ ·~ ~
CJ) .._
~ 0
~ 5:
CJ) 0
= 0:: ~ .~
('-·
-0
Cll
CJ)
0
0.. e
0..
CJ) c
Cll
E
Cll > e
0..
E
Ci)
c c
C1l .c u
.0
:::i
0..
c
~
0.. x w
CJ)
Cll >-
I
0 z
x/
No Is swale wholly Is 100-year design flow co
within drainage ROW? Explain "no ' ans wers:
w " channels: Will any area(s) of conce nt rate d flow be chan neli zed (deepene d
wide or straightened) or otherwise altered? __ No __ Yes If only · tly
shaped , s "Swales" in this Part . If creating side banks , provide informati elow .
W ill design repl1 e natural channel? Yes No If "no "
descri be section sha & area , flow line s lope (min . & ma x.), s
design flow , and amount reeboard :
Instance 1:
Instance 2 :
Instance 3 :
STORMWATER DESIGN GUIDELI N ES
Effe ctive February 2007
Pag e 16 of 26 APPENDI X. D : TECH . DESIG N SUMMAR Y
As Revised Februarv 2009
SECTION IX
APPENDI X D -TE C HNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Des ign Parameters Continued (Page 4 .8)
Stormwater Management Concept (continued)
Wi t h in Or Serv ing Subject Prop erty (Ph ase, or Site) (c o nt inued)
-0
QJ
~ c
~
0
~
CJ) c
QJ
E
QJ
> 0 c.
E
(ii
c c co ..c u
No Yes
Wi smal l creeks and their floodp lains remain undistu rbed? __ Yes __ No
man disturbance instances ? Identify each planned locat ion :
For each loc tion , describe length and general type of proposed improv,
(including floo la in changes):
For each locat ion , des ibe sect ion shape & area, flow line sl
surfaces , and 100-year sign fl ow.
Watercourses (and tributa ries): e c hanges , are Regulatory
Watercourses proposed to be altered . __ o __ Yes Explain below.
Subm it f ull report desc rib ing propos ed c n s to Regulatory Watercourses . Address
exi sting a nd proposed section size and sh e , surfaces , alignment, flow line changes ,
length affected , and capacity, and provid f do c umentation of analysis procedures
and da ta. Is fu ll report subm itted? No If "no " explain:
If design is to rep licate nat a l cha nn e l , identify locatio n a length here , and describe
des ign in Special Des ign ect ion of this Part of Report .
Will 100-year flo be contained with one foot of freeboard ?
no t, identify loc ion and exp lain :
No If
I easements sized to contain channel and required maintenance spa e?
No If not , identify location(s ) and expla in:
STO R MWATER D ESIGN GUIDELINES
Effectiv e Febru ary 2007
Page 17 of 26 APPEND IX . D: TECH. DESIGN SUMMARY
As Rev ised 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)
(/)
(!)
>-
ow many facilities for subject property project?
each dry-type facilitiy: Facility 1
__ yes
__ yes
For each provide info . belo
Facil ity 2
no no
no no
I For each facility what is 25-
('-·
"O
(!)
(/)
0
0.. e
0...
(/)
(!)
:E
·c:;
Cll
LL
c
0
~
(!) a;
0
(!)
4:
Facility 1:
Facility 2:
Do outlets and spillways discharge 1 to a public fa llity in easement or ROW ?
Facil ity 1: __ Yes No
If "no " explain :
For eac h, what is velocity of 25-yr desi
Facility 1: & ----+--
Are energy dissipation measures
location:
For eac h , is sp illway su
Fa ci lity 1:
Facility 2:
Facilit 2: Yes No
Yes Describe type and
es or no , and describe :
For each , what easures are taken to prevent erosion or scour at rec ·ving facility?
Facility 1:
If berm are used g iv e heights , slopes and surface treatments of sides .
1:
STORMWATER DES IGN GUIDELINES
Effecti ve February 2007
Page 18 of26 APPENDIX. D : TECH . DESIGN SUMMAR Y
A s Revi sed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Co ntinued (Page 4 .10)
Stormwater Management Concept (continued)
W ithin Or Se rvi ng Subj ect Property (Pha se, or Site) (con tinued)
tructures comp ly with B-CS Specificat ions ? Yes or no , a nd explain if "no ":
Facility 1;
en
(])
:E 'B ::;;-
Ctl (]) Faci lity 2: LL :J c c:.;::;
0 c
~ 0 c (_) m-
Fo r add iti ona l fac il i ti ~ide all same informatio n o n a se~sheet. a;
0 ~~to be used for detention? __ No _Yes ~
due to requ ired design storm?
Roadside Ditches: W ill cu lverts serve access driveways at roadside ditc hes?
No x Yes If "yes ", provide info rmation in next two boxes . ----
W ill 25 -yr. flow pass without flowing over driveway in a ll cases? --Yes --No
Without ca using fl owing or standing water on publ ic ro adway? --Yes --No
Desig ns & materials comply with B-CS Techn ic al Specifications? __ Yes --No
Exp lain any "no " answers:
C'· en
Ol c
en Are cu lverts parallel to public roadway a li gnme nt? __ Yes No Ex plain : en
0 --u en
(])
(])
co >-
>
I ·;:: Creeks at P r ivate D ri ves : Do private driveways , dri v es , or streets cross drainage 0.
co ways that serve Above-Project areas or are in public easements / ROW?
-0 0 No Yes If "yes " provide informatio n be low. (]) z ----en
x i
:J How many instances? Des cribe location and provide informati on below . en
t
(]) Loca tion 1: 2:
:J
(_)
(]) Location 2 : ~
Locat ion 3 :
For each location enter value for : 1 2 3
Design year passi ng without toping tra ve lway?
Wate r depth on travelway at 25-year flow?
Water depth o n trave lway at 100-year fl ow?
For mo re instances describe locat io n and same in for mation on separate sheet.
STORMWATER DES IGN GUIDELINES
Effective Febru ary 2007
Pag e 19 of 26 APPENDIX . D: TECH. DESIGN SUMMARY
As Revi se d Feb ruary 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage ConceQt and Design Parameters / Conti nued (Page 4 .11)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase , or Site) (continued)
Named Regulato~ Watercourses (&Tributaries}: Are culverts proposed on t hese
faci lities? x No __ Yes , then prov ide ful l report documenting assumptio ns , --criteria, a nal ysis , comp uter programs , and study findings that suppo rt proposed
design(s). Is rep o rt provided? __ Yes --No If "no ", exp la in :
~ Arterial or Major Collector Streets : Will culverts serve these types of roadways ? Q)
<lJ x No Yes How many instances? Fo r eac h id entify the .r::::.
(/) -- --
<lJ locatio n and prov ide the information below .
(/) 11i Insta nce 1: <lJ ....
>-~
x /~ Instance 2 :
Instance 3: c
0
o~ Yes or No for the 100-year design flow : 1 2 3
z E
I~ Headwater WSE 1 foot below lowest curb top?
Spread of headwater within ROW or easement?
E ('-· C1l Is velocity lim ited per conditions (Tab le C-11 )? (/) (/)
g1-o Ex pla in any "no " answer(s): ·-c ~ C1l
0 c .... 0
(..):.;::;
>. C1l
C1l (.)
$: ..Q
"O <lJ
C1l .0 Minor Collector or Local Streets: Will culverts serve these types of streets? 0 ·-.... ....
(.) (.) No x Yes How many ins tan ces? 2 for each identify the ·-(/) -<lJ -----§ "O location and provide the information below:
0.. <lJ
-0.. Instance 1: Culvert #1 on Makawee Lane ro~
"O >. Instance 2: Culvert #2 on Chaco Canyon Drive <lJ c
(/) C1l
::J.._ Instance 3 : .l!l 0 .... (/)
<lJ <lJ For eac h instance enter value , or "yes " I "no " for1 1 2 3 ..::: (.)
::J c
(.) C1l Design yr. headwater WS E 1 ft . below curb top? Yes <lJ 1ii Yes .... c
<( ·-100-yr. max. depth at street crown 2 feet or less? Yes Yes ~
0 Prod uct of velocity (fps) & depth at crown (ft)= ? 0 E 0
0 Is veloc ity lim ited per conditions (Table C-11 )? Yes Yes ~
Limit of down stream analys is (feet)? 50 ' 50 '
Ex plain any "no " an swers :
STORMWATE R DES IGN GUIDELI NES
Effe cti ve February 2007
Page 20 of 26 APPENDI X. D : TECH . DESIG N S UMMARY
As Revi se d February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4.12)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued}
All Proposed Culverts: For all proposed c ulvert facilities (excep t driveway/roads ide
ditch intersects) provide information requested in next eight boxes .
Do culverts 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 lim its 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)? _!:_____No __ Yes If yes,
identify location(s) and provide justification:
-Are flumes or conduit to discharge into or near surfaced approaches to culvert ends?
-a x No Yes If "yes " identify location (s), describe outfall design treatment(s): Ql ----
::J c :g
0
~
(/J
t'.
Ql
Is scour/erosion protection provided to ensure long term stability of culvert structural >
"S u components, and surfacing at culvert ends? _X_ Yes __ No If "no " Identify
locations and provide justification(s):
Will 100-yr flow and spread of backwater be fully con taine d in street ROW , and/or
drainage easements/ ROW? _x_ Yes --No if not, why not?
Do appreciable hydraulic effects of any cu lvert extend downstream or upstream to
neighboring land(s) not encompassed in subject property? x No Yes If ----
"yes " describe location(s) and mitigation measu res:
Are all cul vert designs and materials in compliance with B-CS Tech . Specifications ?
x Yes No If not , explain in Special Design Section of this Part. ----
STORMWATER DESIGN GUIDELINES
Effe ctive February 2007
Page 21 of 26 APPENDIX . D : TECH . DESIGN SUMMARY
As Revised February 2009
S ECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Co nt inu ed (Page 4 .13)
Stormwater Management Concept (continued)
Within O r Serv ing Subject Pro perty (Phas e, o r Sit e) (continued )
(/)
Q)
Ol
"O ·;::
CD
.£
Cll
:::J a
'--
(])
-ro s
bri dge included in plans for s ubj ect property pro j ect? No Yes
If "ye " rovide the follo wi ng information .
Name(s) a functiona l class ifi ca ti on of the road way(s )?
A full report support ing a l spects of the proposed bridge (s tructural , geotechnical ,
Is a Stor mwate r
Pollutio n Prevent ion
Plan (SW 3P )
establis hed for
proj ect construct ion ?
No x Yes
1c factors) must acco m pan y this summa e port . Is t he report
No If "no " ex plain:
Provide a genera l descrip tio n of plan ned tec hn iques :
Hay Bale Barriers and Rock Dams will serve as the
main protection against stormwater pollution. The
Contractor shall use any other means necessary
throughout construction .
Spec ial Designs -Non -Traditional Methods
Are any non -trad itional methods (aquat ic echosystems , we tl and-type dete nt ion , natural st ream
replicat ion , BMPs for wa ter qual ity , etc .) proposed for any aspect of subje ct property project?
x No Yes If "yes " lis t ge neral type and locatio n be low.
STORMWAT ER DES IGN GUIDELI NES
Effectiv e Februa ry 2007
Page 22 of 26 APPE ND IX . D : TECH . DESI GN SUMMAR Y
As Revi sed Fe bruary 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters Continue d (Page 4.14)
Stormwater Management Concept (continued)
W ithin O r Serving Subject Property (Phase , o r Site) (con t inued)
ecial Des igns -Deviation From 8-CS Technical Specifications
If a design(s) or mate ria l(s) of traditional runoff-handling fa cili ties deviate from provisions of
B-C S ch n ica l Sp ecifications, check type faci lity(ies) and ex plai n by specifi c detai l e leme .
De tio n elements __ Drain system elements __ Channel features
Cu Ive Swales Ditches Inl ets tfalls
__ Valle y g ut __ Br idges (explai n in bridge report)
1)
2)
3)
4)
5)
Ha v e eleme nts bee n co ina ted w ith t he C ity E ng ineer o r her/his des
2)
3)
4)
Hydrology
no", action date, and staff name :
Design Parameters
Is a map(s) showi ng all Design Drai nage Areas prov ided? x Yes
Bri efl y summarize the range of applications made of the Ratio nal Formu la :
No
For the Rational Formula we assumed residentia l areas had a
runoff coefficient of 0 .5 for large residential or estate lots .
W hat is the size an d location of largest Design Drai nage Area to which the Rational Formula
has been app lied? 18 . 35 acres Location (o r identifier): Ditch Line Culvert #2
STORMWATER DESIGN GUIDELINES
Effe ctive February 2007
Page 23 of 26 APPENDIX. D : TECH. DESIGN SUMMARY
As Revised Februarv 2009
SEC T ION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Conti nu ed (Page 4.15)
Design Parameters (continued)
Hydrology (co ntinued)
In making determinations for time of concentration , was segment analysis used?
x No Y es In approx imately what percent of Des ign Dra inage Areas ? %
As to intensity-durat ion-frequency a nd ra in depth cri teria fo r determining runoff flows , were any
criteria other than those provided in these Gu idel ines used? _x_ No Yes If "yes "
identify type of data , source (s), and where applied :
For each of the stormwate r ma nagement f eatures listed be low ident ify the storm return
freq uencies (yea r) a nalyzed (or c hecked), and that used as the basis for des ign .
Feature Analysis Yea r(s) Des ign Year
Stor11 ~tern for arterial and collector streets -------Storm drain syste m fur'"~., .... .,J d~ -------O pen channels ----..._,_----Swale/buried co n dui ~n lieu of channel --------s~ -------Roadside ditches and culverts serving them 2 ,5 ,10 ,25 ,50 ,100 25 & 100
~ci liti es : sp illway crest a nd its outfall -------Detent ion faci liti e~ conveyance structure (s ) ---------Detent ion faci li ties: vol ume when ~ed ~ ~
C ul verts serving private drives or ~ ----------C ulverts serving ~ _-5;ays ----------~vide in bridge report . --------Hydraul ics
Wh at is the ra ng e of design flow veloc iti es as outlined be lo w?
Design flow ve loc it ies ; 25 year Gutters Condu it Culverts Swales Channels
Highest (feet per second )
Lowest {feet per se cond )
Streets and Storm Drai n Syst ems
Roughness coeffi cients used :
For conduit type(s) RCP 0 .014
STORMW AT E R DESIGN G UIDELI N ES
Effe ctiv e Feb rua ry 2007
8 .43
6 57
Provide the s ummary in format ion out lin ed below :
For street gutters :
Pag e 24 of 26
NA
Coefficients:
APP EN D IX. D : TECH . DESIG N SUMMAR Y
As Rev ised 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 tti ollowing , are assumptions other than allowab le per Guidel in es?
Inlet coe 1 • nts? No Yes Head and friction losses
Explain any "y " answer:
In conduit is velocity general · creased in the downstream dire on?
Are elevat ion drops provided at in
Explain any "no " answers :
For 100-year flow conditions?
What tailwater conditi s were assumed at outfall point(s) of the storm
plain:
Yes
Yes
Yes No
Open Channels If a HEC analysis is ut ili ze d , does it follow Sec Vl.F .5 .a? Yes
No
No
No
Outside of straight sections , is flow regime w it hin 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 cu lvert, describe it here.
For each design discharge , will operation be outlet (barrel) control or inlet control?
All culverts will be inlet controlled .
Entrance , friction and exit losses :
A 0.5 entrance and exit loss coefficients are used for sloped end treatments
and square edged headwalls with wingwalls.
Bridges Provide all in bridge report
STORMWATER DESIGN GUIDE LINES
Effe ctive Febru ary 2007
Pag e 25 of 26 APPENDI X. D : TECH . DESIGN SUMMARY
As Revi se d 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
ma nag ement needs and/or the developme nt of facility designs proposed for su bject property
proj ect? List them below, being sure to identify the so ftwa re nam e and vers ion , th e date of the
version , any app li ca bl e patches and the publ is her
Open Office Calculator Spreadsheet
Part 5 -Plans and S~ecifications
Requirements for submittal of construction drawings and specifications do not diffe r due to use of a
Tec hn ical Design Summary Report . See Section Ill , Paragraph C3.
Part 6 -Conclusions and Attestation
Conclusions
Add any concluding inform ation here :
The Indian Lakes Subdivision , Phase 21 will have no adverse impact to downstream
properties and conforms to the overall subdivision report .
Attestation
Prov ide attestation to the accuracy and completeness of the foregoing 6 Parts of th is Technical
DesiQn Summary Drainage Report by sig ning and seali nq below.
"This report (plan) for the drainage design of the development named in Part B was prepared
by me (or under my supervision) in accorda nce with provisions of the Brya n/Co llege Station
Unified Drainage Design Guidelines for the owners of the property. All licenses and permits
requ ired by any and all state and federal regulatory agencies for the proposed drainage
improvements have been is sued or fall under applicable genera l permits ."
Licensed Pro fessional Engineer
State of Te x as PE No.
STORMWATER DES IGN GUIDELINES
Effectiv e Februa ry 2007
Pag e 26 of 26
(Affix Sea l)
APPENDI X. D : TECH. DESIGN SUMMARY
As Revis ed Februarv 2009
Drainage Report
Indian Lakes , Phase 21
EXHIBITB
Drainage Area Map
EXHIBIT C-1
Rational Method Calculations
Drainage R eport
Indian Lakes, Phase 2 1
< ~ w c 0 0:: w ...J ...J < < 0. < u. w w ·o i== I-c (.!) 0:: ...J z < z < < w z w (.) ~ i= > w :ii; z ...J c ...J < wci: w < 0:: (.!) ~ u; I-cw > I-wz 0 ~!i w < e >w c ... 0:: 0. 0...J NO. AC. 0.4 0.5 0.9 ft. 1.0 11.79 0.00 11.79 0.00 5.90 840.6 2.0 18.34 0.00 18.34 0.00 9.17 863.2 3.0 1.90 0 00 1.90 0.00 0.95 389.6 EXHIBIT C-1 Rational Formula Drainage Area Calculations Indian Lakes Phase 21 ~ 0 ~ ~ ...J u. 0 0 c ...J ...J z u. u. ~ ~ 0:: ::c 0:: u u u w I-w I-0:: ...J ~(.!) I-...J 0 I-u W...J I-...J ...J w >ci: =>ffi =>ci: ~ c;; CJ) N "' Ou. (.!) ...J (.!) u. (.) ::::> N 0 "' 0 ft. ft. ft. ft/s min min In/Hr cfs In/Hr cfs 16.5 1310.0 15.1 1.5 24.4 24.4 3.94 23.2 4.9 28.84 18.4 1492.6 17.1 1.5 25.7 25.7 3.82 35.0 4.8 43.57 10.2 380.2 7.0 1.6 8.0 10.0 6.33 6.0 7.7 7.31 0 0 "' 0 0 0 0 a "' N 0 "' 0 a ..... N 0 "' 0 ..... In/Hr cfs In/Hr cfs In/Hr cfs In/Hr cfs 5.6 32.78 6.38 37.63 7.25 42.76 8.21 48.39 5.4 49.57 6.21 56.92 7.06 64.70 7.99 73.24 8.6 8.20 9.86 9.37 11.15 10.59 12.53 11.90
Drainage Report
Indian Lakes , Phase 21
EXHIBIT C-2
Culvert Sizing Calculations
Culvert #1
Culvert Description
24" RCP
at Intersection
of Chaco Canyon
Drive and
Makawee Lane
Culvert Desi!!n Criteria
Circular
Pipe No .
I Dia (ft) Pipes
2 .00 2
Culvert Analysis Calculations
Total Flow per Critical
Design Flow Pipe Depth (ft .)
Storm (c fsl (cfsl de
5 28 .84 14.42 1 .35
10 32 .78 16.39 1.45
25 37 .63 18.82 1.55
50 42 .76 21 .38 1.65
100 48 .39 24 .20 1.75
n
0.014
Normal
Depth
(ft)
1.21
1.32
1.46
1.65
2 .00
Invert
Elev . (Eli)
(ft .)
278.75
EXHIBIT C-2
CULVERT ANALYSIS
Indian Lakes Phase 21 -Culvert #1
¥-Top of Road / ELho
!HWi ~1; -----~~
EL hi~
"----~---
__/
-- - -_____ .,_ _ _ TW
,,,......--· - ---
EL i Proposed Cul ve n -~-ELo
Outfall Channel Desi n Criteria
O utlet Culvert Top Lt. Side Rt. Side Bottom
Elev . (Elo) Length Slope of Slope Slope Slope Width n
(ft.) (ft .) (ft/ft) Road ke I ft/ft ?:1 ?:1 ft .
278.25 49 .00 0 .0102 282 .93 0 .50 l 0 .0100 4 .00 4 .00 0.00 0 .024
HEADWATER CALCULATI O NS Control Type Outlet
INLET CONTROL OUTLET CO NTROL HW of Velocity Freeboard
HWi/D HWi ELhi TW de <de+ 01 12 ho H EL ho El ev. Control (fps) (ft)
1 .04 2 .09 280.84 1.26 1.35 1.68 1.68 0 .72 280.65 280 .84 Inlet 7 .27 2 .09
1.13 2 .27 281 .02 1.32 1.45 1.73 1.73 0 .93 280.91 281 .02 Inlet 7 .47 1.91
1.26 2 .52 281 .27 1.40 1.55 1.78 1.78 1.23 281 .25 281 .27 Inlet 7 .64 1.66
1.41 2 .82 281 .57 1.46 1.65 1.83 1.83 1.58 281 .66 281 .66 Outlet 7 .71 1.27
1.60 3 .20 281 .95 1.53 1.75 1.88 1.88 2 .03 282 .15 282.15 Outlet 8 .30 0 .78
Culvert #2
Culvert Description
30" RCP
at Chaco Canyon
Drive
C I rt D . C ·1 . u ve es1gn ri eria
Circular
Pipe No .
Dia . lft.l Pipes
2.50 2
Cl u vert Analysis c alculations
Total Flow per Critical
Design Flow Pipe Depth (ft .)
Storm (c fs ) (cfs ) de
5 43 .57 21 .79 1.60
10 49 .57 24 .79 1.70
25 56 .92 28.46 1.80
50 64 .70 32 .35 1.95
100 73 .24 36 .62 2.07
n
0.014
Normal
Depth
(ft.)
1.69
2.00
2.00
2.00
2.00
Invert
Elev . (Eli)
(ft)
275.44
EXHIBIT C-2
CULVERT ANALYSIS
Indian Lakes Phase 21 -Culvert #2
EL hi
Outlet Culvert Top
Elev . (EL o) Length Slope of
(ft) (ft) (ft/ft) Road ke I
275 .22 47 .00 0.0047 282 .93 0.50 I
HEADWATER CALCULATIONS
~ Top of Road / ELho
l HWi ~;------~~
__/
--- -_____ ..,_ _ _ TW
,.........--· -- --
EL i Proposed C ulve rt -~-ELo
0 f II Ch ut a anne ID . C. es1gn riteria
Lt . Side Rt Side Bottom
Sl ope Slope Slope Width n
(ft/ft) (?:1) (?:1) (ft.)
0.0100 4 .00 4 .00 0.00 0.024
Control Type Outlet
INLET CONTROL OUTLET CONTROL HW of V elocity Free board
HWi/D HWi ELhi TW de (de+ D)/2 ho H ELh o Elev . Control (fps ) (ft .)
0.97 2.42 277.86 1.47 1.60 2.05 2.05 0.61 277 .88 277.88 Outlet 6.57 5.05
1.04 2.59 278 .03 1.55 1.70 2.10 2.10 0.79 278 .11 278 .11 Outlet 6.97 4 .82
1.13 2.83 278 .27 1.64 1.80 2.15 2.15 1.04 278.41 278.41 Outlet 7 .52 4.52
1.25 3.11 278 .55 1.71 1.95 2.23 2.23 1.35 278 .79 278 .79 Outlet 7 .88 4 .14
1.39 3.47 278 .91 1.79 2.07 2.29 2.29 1.73 279 .23 279 .23 Outlet 8.43 3.70
DRAINAGE REPORT
FOR
INDIAN LAKES SUBDIVISION
PHASE 21
March 2015
PREPARED FOR:
SMILING MALLARD DE VEL OPMENT, LTD.
3608 EAST 29 TH STREET
BR YAN, TEXAS 77802
9 79-846-4384
MBESI No. 10620048
RBs.@12 McCLURE & BROWNE ENGINEERING/SURVEYING, INC. I f ~ 1008 Woodcreek Dr., Suite 103 ·College Station , Tx . 77845 · (979) 693-3838 Engineer Reg . No . F-458
Survey Reg . No . 101033-00
Indian Lakes Subdivision, Phase 21
Stormwater Management Technical Design Summary Report
MBESI No . 10620048
PART I -Executive Summary Report
Section 1 -Contact Information
Project Designer: McClure and Browne Engineering and Surveying , Inc.
1008 Woodcreek Drive, Suite 103
College Station, TX 77845
979 -69 3-3838
Project Developer: Smiling Mallard Development, Ltd.
3608 East 29tl' Street
Bryan, Texas77802
Section 2 -General Information and Project Location
This development is the 2!5 1 phase of a multi-phase subdivisio n . Phase 21 consists of 12 lots. The
phase is located in the Indian Lakes Village which is down Arrington Rd. approximately 2 miles from
the Arrington Rd ./William D . Fitch Pkwy intersection. Phase 21 lies in the northeast portion of the
subdivision near the intersection of Mesa Verde Drive and Chaco Canyon Drive. The entire
subdivision has been analyzed in the initi al drainage report submitted in September, 2000 . The
development is located within the ETJ of College Station.
The project site is in the Peach Creek watershed. According to the Flood Insurance Rate Maps for
Brazos County, Texas and incorporated area, Map Number 48041C0350E effective May 16 , 2012 ; no
portion of this property is loc ated in a 100-year flood hazard area.
Culvert pipe and ditch sizing calculations are shown with this submittal.
The culverts and ditches peak runoffs were found using the Rational Method . A runoff coefficient ( c) of
0.50 was used for residential areas since all the lots have an area greater than 1 acre. The ditches along
the proposed roadways are uniform throughout the project. The ditch profiles along all proposed
roadways were determined using the largest ditch drainage area found for Phase 21. The culverts and
ditches were analyzed using an Excel Spreadsheet which utilizes Manning's Equation for the analysis.
Section 3 -Reference
Exhibit A
Exhibit B
Exhibit C-1
Exhibit C-2
Exhibit C-3
Technical Design Summary
Drainage Area Map
Rational Method Calculations
Culvert Sizing Calculation s
Ditch Capacity Calculations
Drainage Report
Indian Lakes, Phase 2 1
Drainage Report
Indian Lakes , Phase 21
EXHIBITS
Drainage Report
Indian Lakes , Phase 21
EXHIBIT A
Technical Design Summary
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
The Cities of Bryan and College Station both require storm drainage design to follow these
Unified Stormwater Design Guidelines . Paragraph C2 of Section Ill (Administration) requires
submittal of a drainage report in support of the drainage plan (stormwater management plan)
proposed in connection with land development projects , both site projects and subdivisions.
That report may be submitted as a traditional prose report , complete with applicable maps ,
graphs, tables and drawings , or it may take the form of a "T echnical 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
addition to the requirements for the Executive Summary , this Appendix includes several
pages detailing the requirements for a Technical Design Summary Report as forms to be
completed . These are provided so that they may be copied and completed or scanned and
digitized. In addition , electronic versions of the report forms may be obtained from the City.
Requirements for the means (medium) of submittal are the same as for a conventional report
as detailed in Section Ill of these Guidelines .
Note: Part 1 -Executive Summary must accompany any drainage report
required to be provided in connection with any land development project ,
regardless of the format chosen for said report .
Note: Parts 2 through 6 are to be provided via the forms provided in this
Appendix. Brief statements should be included in the forms as requested ,
but additional information should be attached as necessary.
Part 1 -Executive Summary Report
Part 2 -Project Administration
Part 3 -Project Characteristics
Part 4 -Drainage Concept and Design Parameters
Part 5 -Plans and Specifications
Part 6 -Conclusions and Attestation
STORMWATER MANAGEMENT TECHNICAL DESIGN SUMMARY REPORT
Part 1 -Executive Summary
This is to be a brief prose report that must address each of the seven areas listed below.
Ideally it will include one or more paragraphs about each item.
1. Name , address , and contact information of the engineer submitting the report , and
of the land owner and developer (or applicant if not the owner or developer). The
date of submittal should also be included .
2. Identification of the size and general nature of the proposed project , including any
proposed project phases . This paragraph should also include reference to
applications that are in process with either City : plat(s), site plans , zoning requests ,
STORMWATER DESIGN GUIDELINES
Effective Februa ry 2007
Page 1of26 APPENDIX . D : TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
or clearing/grading permits , as well as reference to any application numbers or
codes assigned by the City to such request.
3. The location of the project should be described . This should iden tify the Named
Regulatory Watershed(s) in which it is located , how the entire project area is
situated therein , whet her 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 jurisdictiona l 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 fo r managing stormwater in the entire project area must be
outlined to include the approximate size , and extent of use , of any of the following
features : storm drains coupled with streets ; detention I retention facilities ; buried
conveyance conduit independent of streets ; swales or channels ; bridges or culverts ;
outfalls to principal watercourses or their tributaries ; and treatment(s) of existing
watercourses . Also , any plans for reclaiming land within floodplain areas must be
outlined.
6. Coordination and permitting of stormwater matters must be addressed . This is to
include any specialized coordination that has occurred or is planned with other
entities (local , state , or federal). This may inc lude 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), includ ing any maps , drawings or
construction documents , should be itemized. An example statement might be :
"One __ -page drainage report dated one set of
construction drawings (_sheets) dated , and a
___ -page specifications document dated comprise
the drainage report for this project."
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 2 of 26 APPEND IX . D : TECH. DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
P art 2 -Project Administration I Start (Page 2.1)
Engineering and Design Professionals Information
Engineering Firm Name and Address: Jurisdiction
City : Bryan
McC l ure & Browne Engineering/Surveying, Inc. x Co ll ege Station 1008 Woodcreek Drive, Suite 103
College Station, Texas 77845 Date of Submittal :
(979)693-3838
Lead Eng ineer's Na m e and C on tact lnfo .(p hone , e-mai l, fax ): Oth er:
Jeffery L. Robertson, P.E.
Supporting Engineering I Consulting Firm(s): Other c on tacts :
Developer I Owner I Applicant Information
Developer I Applicant Name and Address: Phone and e-ma il:
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 Identificatio n
Devel opment Name: Indian Lakes, Phase 21
Is subje ct property a s ite project , a sing le-phase subdivision , or part of a multi-phase subdivision?
Multi-phase Subdivision If multi-phase , subject pro perty is phase 21 of
Legal description of subject property (phase) or P roj ect A rea:
(see Section II , Paragraph B-3a)
Indian Lakes, Phase 21
If subje ct property (phase) is seco nd or later phase of a p roject , describe ge neral status of all
earlier ph ases . For most recent earlier phase Include subm ittal and review dates .
The project is the 21st phase of a multi phase subdivision. At this time the first phase has
been built. Phase 1 was submitted in September, 2000 and consisted of 58 lots . The most
recent phase submitted was Ph. 19.
General Location of P ro ject Area , or subject property (phase):
Project site is located near the intersection of Mesa Verde Drive and Chaco Canyon Drive
in College Station, Texas.
In City Limits? Extraterritorial Jurisdiction (acreage):
Bryan : acres. Bryan : College Station : 31.52
College Stat ion : acres . Acreage Outside ET J :
STOR MWATER DESIG N GUIDELINES
Effect ive February 200 7
Page 3 of 26 APPE NDI X. D: TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Adminis tration I Co nt inue d (page 2 .2)
Project Identification (continued)
Roadways abutting or w ithin Project Area or Abutting tracts , pl atted land , or built
su bject property: developments :
Mesa Verde Drive & Chaco Canyon Drive Indian Lakes Phase 5, Indian Lakes Phase 19,
& Undeveloped Land
Name d Regulatory W ate rcourse (s) & Watershed (s): Tributary Basin (s):
Phase 21 i s located in the Peach Creek Watershed . The nearest tri butary is Peach Creek S.
Tributary 7.2 (See FEMA Map 48 0 41C0350E ).
Plat Information For Project or Subject Property (or Phase)
Prelim inary Plat File#: Fina l Plat File#: Date :
Na m e: Pending Approval Status and V ol/Pg : Pending Approval
If two plats , second name : File#:
Stat us : Date :
Zoning Information For Project or Subject Property (or Phase)
Zoni ng Type : Ex ist ing or Proposed? Case Cod e :
Case Date Status :
Zoning Type : Exist ing or Proposed? Case Code:
Case Date Stat us :
Stormwate r Management Planning For Project or Subject Property (or Phase)
P lanni ng Confere nce(s) & Date (s): Part icipa nts :
Preliminary Report Required? Submittal Date Revie w Date
Review Co m ments Addressed? Y es --No --In Writ ing? W hen?
Complian ce W it h Prelimin ary Drainage Report. Briefly describe (or attach documentation
ex pla in in g) any de v iati on (s ) from provisions of Pre lim ina ry D rai nage Report , if any .
STORMWATER DESIGN GUIDELIN ES
Effective Feb ruary 200 7
Pa ge 4 of 26 APPEND IX. D : TECH . DESIGN SUMMARY
As Revised February 20 09
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 2 -Project Administration I Cont inu ed (page 2 .3)
Coordination For Project or Subject Property (or Phase)
Note: For any Coordination of stormwater matters indicated bel ow , attach docum entat ion
descri bing and substantiating any agreements , understand ings , co ntracts , or a pprovals.
Coord ination Dept. Contact: Date : Subject:
With Othe r
Departments of
Juris diction
City (Bryan o r
Co ll ege Station )
Coordi nation W it h Summarize need (s) & actio ns taken (i ncl ud e contacts & dates ):
Non -juri sd iction
City Needed ?
Yes No x ----
Coord inatio n with Summarize need (s) & act ions taken (i nclude contacts & dates ):
Brazos Cou nty
Needed?
Yes No x -- --
Coo rdi nation with Summarize need (s) & act io ns taken (i ncl ud e contacts & dates ):
Tx DOT Needed?
Y es No x ----
Coordinatio n w ith Su m marize need (s) & acti ons taken (i ncl ud e co ntacts & dates):
T AMUS Needed?
Yes No x ----
Permits For Project or Subject Property (or Phase)
As to st ormwater mana gement, are permits requ ire d for the prop osed wo rk from any of the entities
lis ted bel ow? If so , summarize status of effo rts toward that object iv e in spaces below.
Entity Permitted or
Approved?
US Arm y Crops of
Eng ineers
No x Yes ---
US En viro nmenta l
Protecti o n Agency
No x Yes ---
T exas Comm ission on
Environmental Qual ity
No Yes x ----
Brazos Rive r
A utho ri ty
No x Yes ---
STORMWATE R DESIG N GU IDELINES
Effect iv e Febr uary 200 7
Statu s of Action s (inclu de dates )
A Stormwater Pollution Prevention Plan must be
implemented prior to the start of construction
according to TPDES General Permit No. TXR150000.
Page 5 of 26 APPE NDIX . D: TECH . DESI GN SUMMAR Y
As Re vis ed Februa ry 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Sta rt (Page 3.1)
Nature and Scope of Proposed Work
Exist ing : Land prop osed for development currently used , includi ng extent of im pervious cover?
Existing undeveloped land (Dense tree cover) . Existing impervious cover is
approximately O sf.
Si te __ Redevelopment of one platted lot , or two or more adjoi n ing platted lots.
Developm ent __ Bui lding o n a sing le platted lot of u ndeveloped land .
Proj ect __ Build ing on two or more platted adjoin ing lots of undeve loped land.
(select all __ Building on a single lot , or adjo ining lots , where prop osed plat will not form a ppl ica b le ) a new st reet (bu t may include RO W ded ication to exis ti ng st reets ).
__ Other (exp lain ):
Subdivisio n _x_ Constructio n of streets and utilities to se rv e one or more pla tted lots .
Develop ment __ Construction of streets and utilities to se rve one or more proposed lots on
Project lands represented by pending plats .
Site projects : b u ilding use(s), ap proximate floo r space , imperv ious cover ratio .
Desc rib e Sub divisions : num ber of lots by general type of use , linear feet of streets and
Nature an d drainage easements or ROW.
Size of This phase of the subdivision includes 12 lots. The development
Propos ed consists of approximately 1,593 LF of streets with 16' PUE on each
P rojec t side of the streets ROW.
Is any work planned on land that is not platted If yes , exp lain :
or on land for which platting is not pending?
x No Yes -- --
FEMA Floodplains
Is an y part of subject pro perty abutting a Named Regulatory Watercourse I No _x_ Yes __ (Section II , Paragra ph B 1) or a tributary th ereof?
Is any part of subject property i n floodplain
!No_ Ye s x Rate Map 4B041C03soE
area of a FEMA-regu lated watercourse? --
E nc ro achment(s) Encroachment purpose(s): __ Buil di ng site(s ) __ Road crossing(s) into F loodplain
areas planned? __ Utility crossing(s) __ Other (ex plain ):
No x --
Yes --
If fl ood pl a in areas not shown on Rate Maps , has work been don e toward ame nd in g the FEMA-
a p pro ved Flood Stu dy to define all ow ab le encroachments in pro posed areas? Ex pl ain .
STORMWATER DESIGN GUIDELINES
Effective Feb ruary 2007
Page 6 of 26 APPENDIX . D : TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIG N SUMMARY
Part 3 -Pro~erty: Characteristics I Co ntinued (Page 3.2)
Hydrologic Attributes of Subject Property (or Phase)
Has an earli e r hydro logic analysis been done for larger area including subj ect property?
Y es Reference the study (&date) here , and attach copy if not already in City files .
Indian Lakes Subdivision ; September, 2000 x --
Is the storm w ater management plan for the property in su bstantial confo rmance with the
earl ier study? Y es x No If not , ex plai n how it differs.
No If subj ect pro perty is not part of multi-phase project, de sc ribe sto rmw ater management
plan for the p roperty in Part 4 .
--If property is part of multi -phase project , prov ide overview of stormwate r management plan
for Proj ect Area here . In Part 4 describe how plan for su bject property will comply
th erewith.
Do exis t in g topographic features on subject property st ore o r detain runoff? x No Y es ----
Describe them (i nclude approxi mate size , volume , outfa ll , model , etc).
A ny known dra inage or flood ing problems in areas near subj ect property? x No Y es ----
Ident ify :
Based on location of study property in a watershed , is Type 1 Detention (flood control ) needed?
(see Tab le B-1 in Append ix B)
__ Dete ntion is required . x Need must be evaluated . __ Dete nt ion not req u ired. --
W hat decision has been reached? By whom?
Detention study during Phase 1.
If th e need for How was determ inati on made?
Type 1 Detenti on
Detention was required and is provided for the entire m ust be eva lu ated :
Indian Lakes Subdivision. Phase 21 doe s not require
any additional detention.
STORMWATER DESIG N GUIDELINES
Effective Febr uary 200 7
Page 7 of 26 APPENDI X. D: TECH . DESIGN SUMMAR Y
As Revise d February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Progert~ Characteristics I Continued (Page 3.3)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Does subject property straddle a Watershed or Bas in divide? x No Yes If yes , ----describe spl its below . In Part 4 describe desiqn concept for handlinq this.
Watershed or Basin Larger acreage Lesser acreage
Above-Project Areas(Section 11, Paragraph 83-a)
Does Proj ect Area (proj ect or phase ) rece ive runoff from upland areas? No x Yes ----
Size (s) of area(s) in acres : 1) 7 .05 2) 3) 4)
Flow Cha racteristics (each instance) (overland sheet , shallow concentrated , recogn izable
concen t rated sect ion (s), small cree k (non-regu latory), regu latory W atercourse or tributary );
Overland flow to proposed ditch lines on Phase 21 streets.
Flow determination : Out li ne hydrologic methods and assumptions :
The Rational Method was used for flow calculat ions and the post development
land was treated as large acre residential tracts.
Does storm r unoff drain from public easements or ROW onto or across subject property?
___x_ No --Yes If yes , describe fac il ities in easement or ROW:
Are changes in runoff characteristics subject to change in future ? Ex plain
No, upstream land is already developed.
Conveyance Pathways (Section II , Paragraph C2 )
Must run off from study property drain across lowe r properties before reaching a Reg ulatory
Watercourse or tributary ? No x Yes
Describe le ngth and characteristics of each conveyance pathway (s). Include ownersh ip of
prope rt y(i es ).
Runoff from Ph. 21 will l eave the phase and be discharged int o existing
tributaries of Peach Creek. The property is a future phase
of the Indian Lakes Subdivision.
STORMWATE R DESIGN GUID ELI NES
Effective Feb ruary 200 7
Pa ge 8 of 26 APPEN DIX . D: TECH . DESI G N SUMMAR Y
As Rev ised February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 3 -Pro~ert~ Characteristics I Co nt inued (Page 3.4)
Hydrologic Attributes of Subject Property (or Phase) (continued)
Con v eyan ce Pathways (c ontinued )
Do dra inage If yes , for what part of length? % Created by? __ plat , o r
eas ements
ex ist for any
__ instrument. If instrument(s), descri be t he ir p rovis ions .
pa rt of
pathway (s)?
x No --
Y es --
Where run off must cross lo w er properties , describe ch a racte ristics of ab utt ing lower
property (ies ). (Ex isting watercourses ? Easement or Co nse nt aquired?)
Pathway
Areas
Describe any bu il t or improved dra inage facilities ex isting n ear the property (culverts ,
br idges , li ned cha nne ls , bu r ied co ndu it , swales , dete nt ion ponds , etc).
Nea rby
Draina g e Do any of these have hydrologic o r hydraulic influ ence on proposed sto r mwate r Facilities design ? x No Yes If yes , ex plain : ----
STOR MWATE R DESIGN GUID ELI NES
Effect ive Febru ary 20 07
Page 9 of 26 AP PENDI X. D: TECH . DESIGN SUMMAR Y
As Rev ised Februar y 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage ConceQt and Design Parameters I Start (Page 4 .1)
Stormwater Management Concept
Discharge(s) From Upland Area(s)
If runoff is to be received from upland areas , what design drainage features will be used to
accommodate it and insure it is not blocked by future development? Describe for each area ,
flow section , or discharg e point.
Discharge(s) To Lower Property(ies) (Section 11 , Paragraph E1)
Does project include drainage features (exi sting or future ) proposed to become pub lic via
p latting? x No Yes Separate Instrument? x No Yes -- --
Per Gu idelines reference above , how will __ Establishing Easements (Scenario 1) runoff be discha rged to neighboring
property (ies)? __ Pre-development Release (Scenario 2)
Combination of the two Scenarios --
Scenario 1: If easements are proposed , describe where needed , and provide status of actions
on each . (Attached Exh ibit# )
Scenario 2 : Provide genera l description of how release(s) will be managed to pre-development
conditions (detention , sheet flow , partially concentrated , etc .). (Attached Exhibit# )
Combination: If combination is proposed , explain how discharge will differ from pre-
development conditions at the property line for each area (or point) of re lea se.
If Scenario 2 , or Combination are to be used , has proposed desig n been coordinated with
owner(s) of rece iv ing property(ies)? No --Yes Explain and provide
documentation .
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 10 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 Con ti nued (Page 4 .2)
Stormwater Management Concept (continued)
W ithin Pro ject Area Of Mul t i-Ph ase Proj ect
Identify ga ining Bas ins or W atersheds a nd acres s hifting :
Will pro j ect resu lt
in shifting runoff
between Basi ns or
betw een W hat desi g n an d m itigatio n is used to c omp ensate for increased runoff
Watersheds? from gaining basin or watershed ? x No --
Y es --
How w ill ru noff from Project 1. __ W ith facility (ies ) involv ing othe r development projects .
Area be mitigate d to p re-2 . __ Estab li s hin g featu res to serve overall Project Area . deve lopment co nditions?
Select any or all of 1, 2 , 3 . _x_ O n p hase (or s ite) proj ect bas is within Proj ect A rea .
and/o r 3 , and explain below .
1 . S hared facility (type & location of fac ility ; desig n drainage area se rv ed ; relationship to size of
Project A rea ): (Attac hed Exhibit# )
2 . Fo r Overall P ro ject Area (type & loca t ion of facilities ): (Attac hed Exhib it# )
3 . By phase (or site) project: Describe planned m itigation measures for phases (or s ites ) in
subsequent questio ns of this Part.
Are aquatic echosystems proposed? __ No --Yes In which phase (s) or
proj ect(s)?
C'-·
-0
Q) rn c Q)
A re other Best Management Practices for reduc in g stormwater pollutants proposed ? c >-~
Cl.. No Y es Summarize type of BMP an d exten t of use : ----rn c
Ol
"iii
Q) 0 0 z ro
xi If de s ig n of any r unoff-h a nd lin g facilities dev iate fro m pro v isions of B-CS Technical "(3
Q) Spec ificati o ns , check type facility (i es ) and expla in in later q uestions . a.
(/) Detention elements Condu it elements Channel featu res Q) ------..._
<( Sw a les Ditches __ In lets __ V al ley gutters __ Outfa ll s ----
--Culvert features __ Bri dg es Othe r
STORMW ATER DESIGN GUIDELINES
Effec tive Febru ary 2007
Pag e 11 of 26 AP PENDI X. D: TECH . DESIGN SUMMARY
As Revi se d Febru ary 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concept and Design Parameters I Continued (Page 4 .3)
Stormwater Management Concept (continued)
Within Project Area Of Multi-Phase Project (continued)
Will Project Area include bridge(s) or culvert(s)? __ No _x _ Yes Identify type and
general size and In which phase(s).
Culvert #1 -2 24" RCP Pipes on Makawee Lane
Culvert #2 - 2 30" RCP Pipes on Chaco Canyon Drive
If detention/retention serves (will serve) overall Project Area , describe how it relates to subject
phase or site project (physical location , conveyance pathway(s), construction sequence):
Within Or Serving Subject Property (Phase , or Site)
If property part of larger Project Area , is design in substantial conformance with earlier analysis
and report for larger area? __ Yes No , then summa rize the difference (s):
Identify whether each of the types of drainage features listed below are in cluded , extent of use ,
and general characteristics .
Typical shape?
V-S h ape I
Surfaces?
Grass
Steepest side slopes :
I
Usual front slopes : I Usual back slopes :
4 : 1 4: 1 4 :1
Flow line slopes : least __ o _. 6_5_%_ Typical distance from travelway:
typical __ v_a_r _ie_s_ greatest_~3 ~.1=5~%~ (A ttac hed Exhibit # )
Are longitudinal culvert ends in compliance with B-CS Standard Specifications?
x Yes No , then explain :
At in tersections or otherwise , do valley gutters cross arterial or collector streets?
___ No __ Yes If yes explain :
Are valley gutters proposed to cross any street away from an intersection?
__ No __ Yes Explain : (number of locations ?)
11 '
STORMWATER DESIGN GUIDELINES
Effective Feb ruary 2007
Pag e 12 of 26 APPENDIX. D : TECH . DESIGN SUMMARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Dra i nage Conce~t and Desig n Pa ra m ete rs I Continued (Page 4.4)
Stormwa ter Manag emen t Con cept (contin ue d)
Within Or Serving Subject Pro perty (P hase, or Site) (continue d)
Gutter line slopes : Least Usual Greatest
Are inlets recessed on arterial and collector streets? --Yes --No If "no ",
identify where and why .
Will inlets capture 10-year design stormflow to prevent flooding of intersections (arterial
w ith arterial or collector)? --Y es --No If no , ex plain where and why not
C'-·
"O
(l)
rfl W ill inlet size and placement prevent exceeding allowable water spread for 10-year :::J ....
:§ design storm throughout site (or phase)? --Yes --No If no , expla in.
:::J
Ol
"O ~ c "O
C1l (l) Sag curves : Are inlets placed at low points? Yes No Are inlets and .o 2 -- --.... ·-conduit sized to prevent 100-year stormflow from pond ing at greater than 24 inches? :::J -() c Yes No Explain "no " answers. 0 _c () ----:4= ..._,
3:
rfl
(j)
(l) .... u;
(l) W ill 100 -yr stormflow be conta ined in combination of ROW and buried conduit on ....
<l'. whole length of all streets? Y es No If no , describe where and why . ----
Do designs for curb , gutter , and inlets comply with 8-CS Technical Specifications?
Yes --No If not , describe difference(s) and attach justification .
Are any 12-inch laterals used? __ No --Yes Identify length (s) and where
used .
C'-·
"O Pipe runs between system I Typical (l) Longest rfl rfl access points (feet): :::J (l)
E >-~I Are junction boxes used at each bend? --Y es --No If not, ex plain where
and why .
rfl
c ·-0 ~z i xi Are downstream soffits at or below upstream soffits? Least amount that hydraulic
rfl grade line is below gutter line !!!. Y es No __ If not , ex pla in where and why : --(system-wide):
STORMWATER DESIGN GU IDELINES
Effecti ve February 2007
Page 13 of 26 APPENDI X. D: TECH . DESIGN SUMMARY
As Revis ed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concegt and Design Parameters I Continued (Page 4 .5)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase, or Site) (continued)
Ul'
Describe watercourse(s), or system(s) recei ving system discharge(s) below
QJ (i nclude desig n discharge velocity , and angle between converging flow lines).
() c 1) Watercourse (or system), velocity , and angle? C1l u;
c
QJ ....
~ 0
~ E 2) Wate rcourse (or system), velocity , and angle?
::::! .... c 0
·--c .
0 J2
~.S
E ai ~
ai E 3) Watercourse (or system), velocity , and angle? ..... C1l C1l ~en ~
en QJ ::::!
c~ 0
·-> ~ e
-0 c._
E ..... For each outfall above , what measures are taken to prevent eros ion or scour of .... QJ
0 QJ receiving and all facilities at juncture? ..... ..r:::
Cf) en
QJ 1) -ro
rn c._ 2) QJ en
c 3) -9-
Are swale(s) situated along property lines between prope rties? --No --Yes
Number of instances : For each instance answe r the following questions.
Surface treatments (in cluding low-flow flumes if any):
('· en
al
~ en
..... QJ Flow line slopes (m ini mum and maximum ): en >-c ~ I
~ 0 en Z Outfal l characteristics for each (velocity , convergent angle , & end treatment). ::::!
~x i
en
QJ .... W ill 1 DO -year design storm runoff be contained within easement(s) or platted drainage <(
ROW in all instances? --Yes --No If "no " ex plain :
STORMWATER DES IGN GUIDELINES
Effective February 2007
Pa ge 14 of 26 APPENDIX. D: TECH . DESIGN SUMMARY
As Rev ised February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Pa rt 4-D rainage Conce~t and Design Parameters I Co ntinued (Page 4 .6)
Stormwater Management Concept (continued)
W ithi n Or Se rv ing Subj e ct Property (Phas e , or Site) (co nti n ued)
Are roadside ditches used? --No _x_ Yes If so , pro vid e the fo ll owi ng : en Is 25-year flow contained with 6 inc hes of freeboard throughout? _x_ Yes No Q) --£
.B A re top of ban k s separated from road shoulders 2 feet or more? _x_ Yes --No
0 A re all ditc h sect io ns trapezo idal and at least 1 .5 fee t deep? Yes x No Q) ----
-0 For any "no " answers provide location (s) and ex plain : ·u;
-0 All Ditches are V-shaped and at least 2 ' deep rn
0
0::
If conduit is beneath a swale , prov ide the fol lowi ng informati on (each in stance).
In stan ce 1 Describe genera l location , appro x im ate length :
en
Q)
Is 100-year des ign f low contained in conduit/swale comb ination? Yes No >-----
I ~ If "no" ex plain :
Q)
(.) c Space for 100-yea r storm flow? ROW Easement Width 0 rn z u; Swa le Surface type , minimum Conduit Type and size , m in imum and ma x imum
xi
c
-and ma x imum slopes : slopes , design storm : rn c
0
('-· :E
en -0
ai -0 In lets Describe ho w conduit is loaded (from streets /sto rm dra ins , in lets by type ): rn c >-c rn c
£ rn
(.) 0 c -Q) c Access Describe how ma intenance access is provide d (to swale , into condu it): a. 0 0 ~ -0 E :::J '-
.!!! 0 -c c ·-Instanc e 2 Describe gene ral location , appro xi mate le ngth : Q)
-0 E Q) rn en en :::J
en Q)
Is 100-year design flow contained in co nduit/swale com bination? Yes No c -0 ·::; ----0 If "no " ex plain : ~ 0
c a.
Li a;
Space for 100-year storm flow? ROW Easement Width E Q)
0 £
(.) en Swale Surface type , minimum Conduit Type and size , min imum and ma x imum ..... Q)
:::J ~ and ma xi mum slopes : s lopes , des ig n storm :
-0 c rn
0 a.
(.) Q) Inlets Describe how conduit is loaded (from streets/sto rm drains , inlets by type ): -. en ~ c rn ~ 3: en
Q)
Access Describe how mainte nance access is provided (to swa le , into conduit): -<
ST ORMWAT ER DESIGN GU IDELINES
Effec tive Febru ary 2007
Page 15 of 26 APPENDI X. D: TECH . DESIGN SUMMAR Y
As Revised Febru ary 200 9
SEC T ION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -D rainage Conce~t and Des ign Parameters I Con t in ued (Page 4 .7 )
Stormwater Management Concept (continued)
Within Or Servi ng Subj e ct Prope rty (P hase, o r S ite ) (con t inu e d )
If "yes " p rov ide the follo win g information fo r each instance :
Instance 1 Describe general location , approximate length , surfacing :
c
]!
E
c_ x
0 w
~
:i:: ui Is 100-year design flow contained in swale? --Yes --No Is swa le wholly
0 <ll within dra in age ROW? Yes No Explain "no " a nsw ers: c >-::J
I
----.....
<ll >
Qi Access Describe how maintenance access is provid e : u
<ll ..... 0 ....., z ::J 1 x I Ins tance 2 Describe general location , ap p roximate length , surfaci ng :
<ll ·;::: C'-·
::J en
..0 c
5 <ll
0 E
£ (!) en Is 100-year des ign flow contai ned in swale? Yes No Is swale who ll y ·~ <1l ----(!) within drainage ROW? __ Y es No Ex p lain "no " a nswers : en ..... --<ll 0 ro s :s: en 0
~ n:: Access Describe how maintenance access is provided :
.!::?
..0
::J c_
Ins tance 3, 4 , etc. If swales are used in more than two instances , attach sheet
providing all above in formation for each instance .
"New" channels : W ill an y area(s) of conce ntrate d fl ow be cha nn e lize d (deepened ,
widened , or straightened) or otherwise altered? --No --Yes If only slightly
shaped , see "Swales" in this Part . If creating side ba nks , provide information below.
C'-·
"O c Will desi gn rep licate natural c ha nn el? Yes No If "no", for each instance <ll ----en .!!! describe section shape & area , flow line slope (m in. & max .), surfaces , and 100-year 0 c_ c_ x design flow , and amount of freeboard : 0 w ..... c_ Instance 1: en en c <ll
<ll >-
E
I
<ll > Instance 2 : e c_
E 0 z -
xi
<ll c In stance 3 : c
<1l .c u
STORMWATER DESIGN GUIDELINES
Effective February 2007
Page 16 of 26 APPENDIX . D: TEC H. 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 .8)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase , or Site) (continued)
Existing channels {small creeks}: Are these used? --No --Y es
If "yes " provide the information below.
W ill small creeks and the ir floodplains rema in undisturbed? __ Yes --No How
many disturbance instances? Identify each planned location :
For each location , describe length and genera l type of proposed improvement
(in cluding floodplain changes):
For each location , descr ibe section shape & area , flow line slope (min . & max .),
surfaces , and 100-year design flow .
'C
Q)
:J c
~ Watercourses {and tributaries}: Asi de from fringe changes , are Regulatory
0 Watercourses proposed to be altered? __ No Y es Explain below . ~ --
<Jl c Submit full report describing proposed changes to R egulato ry Waterco urses . Address
Q) existi ng and proposed section size and shape , surfaces , alignment , flow line changes , E
Q) length affected , and capacity , and provide fu ll docu mentation of analys is procedures > 0 and data . Is full report submitted? Y es No If "no " explain: '---a.
E --Q) c c ro All Proposed Channel Work: For all proposed channel work , provid e information ..c
0 requested in next three bo xes .
If design is to re plicate natural channel , identify location and length here , and describe
des ign in Special Desig n section of this Part of Rep ort.
Wil l 100-year flow be contained with one foot of freeb oard ? --Y es --No If
not, identify location an d explain:
Are ROW I easements sized to conta in channel and required maintenance space?
--Y es --No If not , identify location (s) and explain :
STORMWATER DESIGN GUIDELINES
Effective February 2007
Pag e 17 of26 AP PEND IX. D: TECH . DESIGN SUMMARY
As Revis ed February 2009
SECTION IX
AP PENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Concegt and Design Parameters I Cont inued (Pag e 4 .9)
Stormwater Management Concept (continued)
Withi n O r Serving Subject Pro perty (Phase , or Site) (continued)
How many fac ilities for s ubj ect p ro perty p roject? For each prov ide info . below .
For each d ry -type fac il itiy : Faci lity 1 Facility 2
Acres se rv ed & desig n volu me+ 10%
100-y r volu me : free flow & p lugged
De sig n di scharge (10 yr & 25 yr)
Spillwa y crest at 100-yr WSE? __ yes --no __ yes --no
Berms 6 inc hes above plugg ed WSE? __ ye s --no __ yes --no
Expla in an y "no" answers :
en
<ll >-
I For each fac ility what is 25-yr desig n Q , and desi gn of outlet structure?
Faci lity 1:
0 z Faci lity 2 :
xi Do ou tle ts and spillways discharge into a pu bl ic fa ci lit y in easeme nt or ROW?
Faci lity 1: __ Y es No Fac ility 2: Yes No -- ----C'-· If "no " ex pla in: "O
<ll en
0
0.. e
0.. For each , w hat is velocity of 25 -yr design disc ha rge at outlet? & at s pillw ay? en
<ll Fac ility 1: & Faci li ty 2 : & ~ -Are e nerg y dissipation measu res used? No Yes D escribe type and "(3 ----ro
LL locati on:
c
0
~
<ll
al
0
<ll For ea ch , is sp i llway surface treatment other than con crete? Yes or no , and describe : ~ Faci lity 1:
Faci lity 2 :
For each , wh at measu res a re taken to pre ve nt erosio n or scou r at re cei v ing facility?
Faci lity 1:
Faci lity 2 :
If berm s are used give hei gh ts , sl op es and surface treatments of s id es .
Faci lity 1:
Fa ci lity 2:
STOR MWATER DESIGN G UIDELINES
Effective Feb ruary 2007
Page 18 of 26 APPENDIX. D: TEC H . DESIGN SU MMARY
As Revised February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce(;!t and Design Parameters I Con t inued (Page 4 .10)
Stormwater Management Concept (continued)
Wi t h i n Or Se rvi ng Subject Property (Ph ase, or Site) (contin ued)
Do structu res comply with B-CS Specifications? Y es or no , and expla in if "no ":
Facility 1;
f/)
<lJ
~
=-= :0-iil <lJ Facility 2: lL ::J c c:;::::;
0 c :;::::; 0 c (.)
w ~
Qi For ad d iti o nal facili t ies prov ide a ll same in fo rm ation o n a sepa rate sheet.
0
A re parking areas to be used for detenti on ? __ No --Yes What is
m ax imum depth due to required des ign storm ?
Road s id e D itc hes : Will culverts serv e access driveways at roadside ditches?
No x Yes If "yes '', provide infor mation in next two boxes . ----
W ill 25 -yr . flow pass w ithout flowing over driveway in al l cases ? --Y es --No
W it hout caus ing flowing or stand i ng water on publi c roadway? --Yes --No
Designs & materials comp ly with B-CS Techn ical Specifications ? __ Yes --No
Explain any "no " answers :
C'-·
f/)
Ol c
"(ii
Are c ulverts para ll e l to pu blic roadway al ig nmen t? __ Y es No Explain : f/)
0 --
'-f/) (.)
<lJ <lJ
ro >-
> I ·c Cre eks at Private Drives : Do private driveways , drives , or streets cross drainage 0..
ro ways t hat serve A bove-Project areas or a re i n publ ic easements/ ROW?
"O 0 No Yes If "yes " provide informatio n be low. <lJ z ----f/)
xi ::J How many instances? Describe loca ti on and prov ide informat ion below. f/)
t
Q) Locat ion 1: ~
::J
(.)
Q) Locatio n 2: -<
Location 3 :
For each locati o n enter value fo r : 1 2 3
Design ye ar passing without top ing trave lway ?
Wate r depth on travelway at 25 -yea r fl ow?
Water depth on travelway at 100-year flow?
For m ore in stances describe location a nd same information on se parate sheet.
STORMWATER DES IGN GUIDELINES
Effecti ve Febru ary 200 7
Pa ge 19 of 26 APPENDI X. D: TEC H. DES IGN SUMMARY
As Revis ed February 200 9
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4 .11)
Stormwater Management Concept (continued)
Within Or Serving Subject Property (Phase , or Site) (continued)
Named Regulato!)l Watercourses {&Tributaries}: Are culverts proposed on these
fac il ities? x No __ Yes , then provide full report documenting assumptions , --criteria , analysis , comp uter programs , and study findings that support proposed
design(s). Is report provided? __ Y es --No If "no ", explain :
~ Arterial or Major Collector Streets: Will culverts serve these types of roadways? Q)
a.> x No Yes How many instances? For each identify the .s:::.
(/) ----
a.> locatio n and provide the information be low.
cn -ro Instance 1: a.> ..__
>-~
x i~ Instance 2 :
Instance 3: c
0
o~ Y es or No for the 10 0-year design flow : 1 2 3
z E
I~ Headwater WSE 1 foot below lowest curb top?
Spread of headwater within ROW or easement?
E C'-· rn Is velocity lim ited per condit ions (Table C-11 )? (/) (/)
g1-c Explain any "no " answer(s): ·-c ~ rn
0 c ..__ 0 ()~
>-rn rn u
~ ..Q
-0 a.> rn .o Minor Collector or Local Streets: Wil l culverts serve these types of streets? 0 ·-..__ ..__
(.) (.) No x Yes How many instances? 2 for each identify the ·-(/) -a.> -----g -0 location and provide the information below:
0.. a.>
_, 0.. Instance 1 : Culvert #1 on Makawee Lane rn ?;-
-0 >-In stance 2 : Culvert #2 on Chaco Canyon Drive a.> c ~ rn -Instance 3: (/) 0
t:: (/)
a.> a.> For each instance enter value , or "yes " I "no " for ~ 1 2 3 ~ (.)
:J c u rn Design yr. headwate r WSE 1 ft. below curb top? Yes a.> (;) Yes ..__ c
<{ ·-100 -yr . max. depth at street crown 2 feet or less? Yes Yes a.>
0 Product of velocity (fps ) & depth at crown (ft ) = ? 0 E 0 ..__ Yes g Is velocity lim ited per conditions (T able C-11 )? Yes
Limit of down stream analysis (feet)? 50 ' 50'
Explain any "no" answers :
STORMWATER DES IGN GUIDELINES
Effect ive Febru ary 20 07
Pa ge 20 of 26 APPENDI X. D: TECH. DESIGN SUMMARY
As Revis ed February 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Pa rameters I Co nti nu ed (Pag e 4 .12)
Stormwater Management Concept (continued)
W ith in Or Se rvi ng Subject Property (Ph ase, or S ite) (continued)
All P ropo sed C u lv erts: For all proposed culvert faci lities (except driveway/roadside
ditch intersects) provide information requested i n next eight boxes .
Do culverts and travelways intersect at 90 degrees? x Y es No If not , ----identify location (s) and intersect ang le (s), and justify t he design (s):
Does drainage way alignmen t change w ithi n or near lim its of cu lvert and surfaced
approaches thereto? _x_ No --Yes If "yes " identify locatio n (s), describe
change(s), and justification :
Are flumes or conduit to discharge into culvert barrel(s)? _x_ No --Y es If yes ,
identify location (s) and provide justification :
'O
Are f lumes or con duit to discharge into or near surfaced approaches to culvert ends?
x No Yes If "yes " identify location(s), describe outfall design treatment(s): <I> ----:::l c :g
0
~
en
t
<I> Is scour/erosion protection provided to ensure long term stab ili ty of culvert structural .-2'.
:::l components , and surfacing at culvert ends? x Yes No If "no" Identify 0 ----
locat ions and provide justification(s):
Will 100-yr flow and spread of backwater be fully contained in street ROW , and/or
drainage easements/ ROW? _x_ Y es --No if not , why not?
Do appreciable hydraulic effects of any culvert extend downstream or upstream to
neighboring land (s) not encompassed in subject property? x No Yes If ----
"yes " describe locat ion(s) and m itigation measures:
Are all culvert designs and materia ls in compliance with B-CS Tech . Specifications?
x Yes No If not , expla in in Specia l Design Section of this Part. ----
STORM WATER DESIGN GUIDELINES
Effective February 2007
Page 21 of 26 APPENDI X. D: TECH . DESIGN SUMMARY
As Revised Februa ry 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce12t and Design Parameters I Continu ed (Page 4 .13)
Stormwater Management Concept (continued)
Within Or Serv ing Subject Property (Phase , o r Site) (c ontinued )
Is a bridge included in plans for subject property pro ject? --No --Yes
If "yes " provide the foll owing information .
Name(s) and funct iona l classification of the road w ay(s )?
What drai nage way (s) is to be crossed?
Ul
Q)
OJ
-0 ·;::
(]]
A full report supporting al l aspects of the proposed bridge (s) (structural , geotechnical ,
hydrolog ic , and hyd raulic factors ) must accompany this summary report. Is the report
provided? --Ye s --No If "no " exp lain :
Is a Sto r mwater Prov ide a general descript ion of planne d techni ques :
-~ Pol lutio n Preventio n Hay Bale Barriers and Rock Dams will serve as the
Cii Plan (SW3P ) main protection against stormwater pollution. The ::l a establis hed for Contractor shall use any o ther means necessary .... project construct ion? Q) throughout construction . Cil s No x Yes ----
Spec ial Des igns -Non-Trad iti onal Methods
Are any non-traditional methods (aquatic echosystems , wet land-type detention , natural stream
re pl ication , BMP s for water qua lity , etc .) proposed for a ny aspect of subject property project?
x No Yes If "yes " list genera l type and locatio n below. ----
Provide full report about the proposed special design(s) i ncl uding ratio na le for use and
expected bene fi ts . Report must substantiate that stormwater manageme nt objectives w ill not
be compromised , and that maintena nc e cost wil l not exceed those of trad it io na l design
sol ution (s). Is re po rt provided?
STORMWATER DESIGN GU IDELINES
Effective February 200 7
Yes ----
Page 22 of 26
No If "no " ex pla in :
APPENDIX. D : TECH . DESIGN SUM MARY
As Revised February 2009
SECTION IX
APPENDIX D -TECHN ICAL DESIGN SUMMARY
P art 4 -Draina ge ConceQt and Desig n Parameters I Conti nued (Page 4 .14)
Stormwater Management Concept (continued)
W ith in Or Serving Subject Pro perty (Phase, or Site ) (c o nti nu ed )
Sp ec ial Designs -Dev iation From 8-CS Technica l Specifications
If any des ign (s) or material (s) of traditional runoff-hand li ng facilities deviate from provis ions of
B-CS Technical Specifications , check type facility (i es) and ex plain by specific detail ele m ent.
--Detention elements __ Drain system elements --Channel features
Cu lvert features Swales Ditches Inlets Ou tfalls -- --------
__ Valley gutters __ Bridges (ex plain in bridge report)
In table below briefly identify specific e lement, justification for deviation (s ).
Specific Detail Element Justification for Deviation (attach additiona l sheets if needed)
1)
2)
3)
4 )
5)
Have elements been coord i nated w ith the C ity Enginee r or her/his des ignee? Fo r each item
above pro v ide "yes" o r "no", action date , and staff name :
1)
2)
3)
4 )
5)
Desi gn Para mete rs
Hydrolog y
Is a map (s) showing a ll Design Drainage A reas provided? x Y es No ----
B riefly s umm arize the range of appl ications made of the Ratio nal Fo rm ula:
For the Ration al Formu l a we assumed residenti al areas had a
run off coefficient of 0 .5 for large residenti al or estate lots.
What is the s ize and location of largest Desig n D rainage Area to wh ich the Rat ional Formula
has be en applied? 18 . 35 acres Locatio n (or identifi er): Ditch Line Culvert #2
STORMWATER DESIGN GUIDELINES
Effective Febru ary 2007
Pag e 23 of 26 APPENDI X . D: TECH. DESIGN SUMMARY
As Revise d Febru ary 2009
SECTION IX
APPENDIX D -TECHNICAL DESIGN SUMMARY
Part 4 -Drainage Conce~t and Design Parameters I Continued (Page 4 .15)
Design Parameters (continued)
Hydrology (continued)
In making determinations fo r time of concentration , was segment analysis used?
x No Yes In approx imately what percent of Design Dra inage Areas? %
As to intensity-duration-frequency and rain depth criteria for determining runoff flows , were any
criteria other than those provided in these Guidelines used? _x_ No --Yes If "yes "
identify type of data , so urce (s), and where appl ied :
For each of the stormwate r management features listed below identif y the sto r m return
frequencies (year) analyzed (or checked ), and that used as the basis for design .
Feature Ana lys is Year(s) Design Year
Storm dra in system for arterial and collector streets
Storm drain system for loca l streets
Open channels
Swale /buried conduit comb ination in lie u of channel
Swales
Roadside ditches and cul v erts serving them 2,5,1 0 ,2 5,50,1 00 2 5 & 10 0
Detention facilities : sp il lway crest and its outfall
Detentio n fac ilities : out let and conveyance structure (s)
Detentio n facilit ies : volu m e when outlet plugged
Culverts serving private drives or streets
Culverts serving public roadways
Bridge s: provide in bridge report .
Hydraulics
What is the range of des ign flow velocities as outl i ned below?
Design flow velocities ; 2 5 y ear Gutters Conduit Cu lverts Swales Channels
Highest (feet per seco nd) 8 .43
Lowest (feet per seco nd) 6 57
Streets and Storm Drain Systems Provide the summary information outlined below :
Roughness coefficients used :
For con duit type(s ) RCP 0.0 14
STORMWATER D ESIGN G UID ELI NES
Effe ctive February 2 00 7
For street gutters :
Page 24 of 26
NA
Coe ffi c ients:
APPEN DIX . D TECH . DESIGN SUMMARY
As Re v is ed Feb rua ry 200 9
SECTION IX
APPENDIX D -TE CHNICAL DESIGN SUM MARY
Part 4 -Dra in age C o nc e Qt and Des ig n Pa rameters I Continued (Page 4.16)
Design Pa rame te rs (contin ued)
Hydrau li cs (continued)
Street and Storm Drain Systems (continued )
For the fo llowing , are assumptions other t han allowab le pe r Guide li nes?
In let coefficients? No Yes Head and friction losses No Yes --------
Explain any "yes " answer:
In cond uit is velocity general ly increased in the downstream direction ? --Yes --No
Are elevat ion drops prov ided at inlets , manholes , and junction bo x es ? --Yes --No
Explain any "no " answe rs :
Are hydrau lic grade lines calculated and shown for des ign storm? --Yes --No
For 100-year flow condi ti ons? --Yes --No Ex plain any "no " answe rs :
What ta il wate r conditions were assumed at outfall poin t (s) of the sto rm drain system? Identify
each locatio n and explain :
Open Chan ne ls If a HEC analysis is util ized , does it follow Sec Vl.F .5 .a? --Yes --No
Outside of straight sections , is flow reg im e w ith in lim its of sub -crit ica l fl ow? x Yes No ----
If "no " list locations and ex plain :
Culverts If plan sheets do not provide t he following fo r each cu lvert , describe it here .
For each d es ign discha rge , will ope ration be out let (ba rrel) control or in let contro l?
All culverts will be inlet controlled.
En trance , fr ict ion and exi t losses :
A 0.5 entrance and exit loss coefficients are used for sloped end treatments
and square edged headwalls with wingwalls.
Bridges Prov ide all in bridge repo rt
STORMWATE R DESIGN GUIDELINES
Effective Feb ruary 20 07
Page 25 of 26 APPENDI X. D: TECH . DESIGN SUMMAR Y
As Rev ised February 200 9
SECTION IX
APPENDIX D -TECHNICA L DESIGN SUMMARY
Pa rt 4 -Drainage Conce~t and Design Parameters I Co nt inued (Page 4.17)
Design Parameters (continued)
Comp uter Software
Wh at co mputer software has been used in the analysis and assessment of storm water
management nee ds and/or the d evelopment of facility designs proposed for su bject property
project? List them be low , being sure to identify the software name and ve rsi o n , the date of t he
vers ion , any app lica bl e patches and the p ublisher
Open Office Calculator Spreadsheet
Part 5 -Plans and S~ecifications
Requ irements for s ubm ittal of construction drawings and speci fi cations do not differ due to use of a
Tech nical Design Summary Report. See Section Ill , Paragra p h C3 .
Part 6 -Conclusions and Attestation
Conclusions
Add any concluding information here:
The Indian Lakes Subdivis i on, Phase 2 1 will have no adverse impac t t o downstream
properties and conforms to the overall subdivision report .
Attestat ion
Provide attestation to the accuracy and completeness of the foregoing 6 Parts of this Technical
De s iq n Summary Drai naqe Report by siqninq and sealinQ bel ow.
"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
requ ired by any and all state and federal regulatory agencies for ·(l),e propos1'_44'<t~!1 ge
improvements have been is s ued or fall under applicable genera l perrri!ts ." --~r:. 0 F ; I.: ;\'I Q ' -' .. ,. ....... ., ,-1,
(Affix Seal) ,.,. ''v.·· }' ··:-1 'l
,:' '.>~ .,,.i, ·-.~' I
... _., l ,,~ ,~ *.. e-.-t!; '·* ,, • ~-11: 'OI~~* ,. .... : .. '1.7. ... , .. g_.2 ......... ~
Licen ~Professional Enginee r
~
State of Te x as PE N o. ~~7~~
STORMWATER DES IGN GUIDELINES
Effective February 2007
Page 26 of 26
l J EF F c~Y L ROBER TSON / ~····:······················:····i f •. 9t.1 ltl 5 : ,.I '°"'' '"f • •()-"' .-" •, I ',) •' '<J ,; fl 'O~··.''CEN 5~',.··~~..,
I • R~···· ... .-°!\: -
.\\ "<:i/ONA~
: . "''....: -.. \ .:• ' ~~ t. ...
APPENDIX . D T~SIGN SUMMAR Y
As Revised February 2009
Drainage Report
Indian Lakes , Phase 21
EXHIBITB
Drainage Area Map
EXHIBIT C-1
Rational Method Calculations
Drainage Report
Indian Lakes, Ph ase 21
<( s
w 0 0
0:: w __J __J
<( <( c.. <( LL.
LU w 0 F 1--0 0:: z <( z (!) <(
__J z () <( w LU LU 5 i!= __J > 2 __J z <( LU <( 0 w <( 0:: (!) ~ iii 1--0 LU > 1--LU Z
0 z 0:: w <( 0 >w 0 1--::::> <( 0:: c.. 1--0 __J
NO . AC . 0 .4 0 .5 0 .9 ft .
1.0 11 .99 0 .00 11 .99 0 .00 6 .00 826 .0
2 .0 18.55 0 .00 18.55 0 .00 9.28 863 .2
3 .0 1.90 0 .00 1.90 0 .00 0 .95 387 .8
EXHIBIT C-1
Rational Formula Drainage Area Calculations
Indian Lakes Phase 21
s
0 s s __J
LL. 0 0
0 __J __J
z LL. LL. ~ <( 0:: I 0:: u 0 __J w 1--w 1--~ 0:: __J 1--(!) 1--__J 0 ti w __J 1--z 1--__J __J LU > <( ::::> w ::::> <( w n; Ill "' It)
0 LL. (!) __J Cl LL. > () ::::> ~ 0 !:!? 0
ft . ft . ft . ft/s min min In/Hr cfs In/Hr cfs
15.7 1320.3 16 .1 1.5 24 .2 24 .2 3 .96 23 .7 4 .9 29 .51
18.4 1592 .8 19 .4 1.6 26.1 26.1 3 .78 35 .1 4 .7 43.65
8 .7 380.2 7 .0 1 .5 8 .5 10.0 6 .33 6 .0 7 .7 7 .29
0
0 It) 0 0 0
0 0 It) "' 0 It) 0 0 !: ~ 0 !:!? 0 !:
In/Hr cfs In/Hr cfs In/Hr cfs In/Hr cfs
5 .6 33 .53 6.42 38 .50 7 .30 43 .74 7 .53 45 .15
5.4 49 .68 6 .15 57 .06 6 .99 64.86 7 .22 67 .01
8 .6 8 .18 9 .86 9 .34 11 .15 10 .56 11.41 10 .81
Drainage Report
Indian Lakes, Phas e 21
EXHIBIT C-2
Culvert Sizing Calculations
Culvert #1
Cul ve rt Description
24" RCP
at Intersec ti on
of Ch aco Canyon
Drive and
Makawee Lane
CI D . C. u vert es1qn ntena
Circular
Pipe No .
I Di a. (fl.) Pipes
2.00 2
. CI I . Culvert Analvs1s a cu at1ons
Total Fl ow per Cri ti ca l
Des ign Flow Pipe Dep th (ft.)
Storm (cfs) (c fs) de
5 29 .50 14.75 1.40
10 33 .50 16 .75 1.50
25 38 .50 19 .25 1.55
50 43 .7 0 21 .85 1.70
100 45 .20 22 .60 1.73
Elhi = Hwi + Eli
ho= TW or {de+ D)/2 {Whichever is Greater)
n
0 .014
Norma l
Depth
(ft .)
1.23
1.34
1.49
1.69
2 .00
EXHIBIT C-2
CULVERT ANALYSIS
Indian Lakes Phase 21 -Culvert #1
¥'-Top of Road / ELho "''~==I~====_;.====== ! ~w
ELi Propos ed Cul vert "'--ELo
Outfall Channel De siqn Criteria
In ve rt Outlet Cul ve rt Top Lt. Side Rt. Sid e Bottom
El ev . (Eli) El ev. (EL o) Length Sl ope of Slope Slope Slope Width n
(fl.) (fl.) (ft .) (ft /fl) Road ke I (fl/fl) (?:1) (?:1) (fl.)
27 8.75 278 .25 49 .00 0 .0102 282 .93 0 .50 I 0 .0100 4 .00 4 .00 0.00 0.024
HEADWATER CALCULATIONS Control Type Outl et
INLET CONTROL
HWi/D HWi ELhi
1.06 2 .11 280 .86
1.15 2 .30 281 .05
1.28 2 .57 281 .32
1.44 2 .88 281 .63
1.49 2.98 281 .73
H = (1+ke+{(29 '{n'2)'l)/R'1 .33)]"((v'2)/2g)
Elho = Ela + H + ho
OUTLET CONTROL
TW de (de+ D)/2 ho
1.27 1.40 1.70 1.70
1.33 1.50 1.75 1.75
1.41 1.55 1.78 1.78
1.47 1.70 1.85 1.85
1.49 1.73 1.87 1.87
HW of Velocity Free board
H ELh o El ev. Control (fps) (ft .)
0 .75 280 .70 280.86 Inlet 7.31 2.07
0 .97 280 .97 281 .05 Inl et 7.50 1.88
1.28 281 .31 281 .32 Inlet 7.66 1.61
1.65 281 .75 281 .75 Outlet 7.68 1.18
1.77 281 .88 281.88 Ou tl et 7.83 1.05
Culvert #2
Culve rt Desc ription
30" RCP
at Ch aco Ca ny on
Drive
Culvert Design Criteria
Circular
Pipe No .
Di a . (ft .) Pipes
2 .50 2
Culvert Analvsis Calculations
T otal Flow per Crit ica l
Design Flo w Pipe Depth (ft .)
Storm (c fs\ (cfs) de
5 43 .57 21 .79 1.60
10 49 .70 24.85 1.70
25 57 .10 28 .55 1.85
50 64 .90 32 .45 1.95
100 6 7 .00 33 .50 2 .00
Elhi = Hwi + Eli
ho = TW or (de + D)/2 (Whichever is Greater)
n
0 .014
Norm al
Depth
(ft.)
1.69
2 .00
2 .00
2 .00
2 .00
EXHIBIT C-2
CULVERT ANALYSIS
Indian Lakes Phase 21 -Culvert #2
ELh i ~ ,.,---Top ofRoad / ELho
~HWi ~i~-----------~---! H
___/'--- - --__ ~ _ _ TW
ELi Pro posed Culvert 'I\.
"'--ELo
0 f II Ch ut a anne ID . C 't . es1qn n ena
In ve rt Outl et Culve rt Top Lt . Side Rt. Side Bottom
El ev . (EL0 El ev . (ELo) Le ngth Sl ope of Slop e Slope Slope Width n
(ft.) (ft .) (ft .) (fUfl\ Road ke I (ft /ft) (?:1) (?:1) (ft.\
275.44 275 .22 47 .00 0 .0047 280 .04 0 .50 I 0 .0100 4 .00 4 .00 0 .00 0 .024
HEADWATER CALCULATIONS Control Type Outl et
INLET CONTROL
HWi/D HWi ELhi
0 .97 2.42 277 .86
1.04 2.59 278 .03
1.13 2.83 278 .27
1.25 3 .12 278 .56
1.28 3 .2 1 278 .65
6 .76
H = (1 +ke+((29"(n'2)'l)/R'1 .33)]'((v'2)/2g)
Elho = Ela + H + ho
OUTLET CONTROL
TW de (de+ D\12 ho
1.47 1.60 2 .05 2 .05
1.55 1.70 2 .10 2 .10
1.64 1.85 2 .18 2 .18
1.71 1.95 2 .23 2 .23
1.73 2.00 2.25 2 .25
HW
H ELh o El ev .
0 .61 277.88 277.88
0 .80 278 .12 278 .12
1.05 278 .45 278.45
1.36 278 .80 278 .80
1.45 278 .92 278 .92
Of
Control
Out let
Outlet
Outlet
Outlet
Outlet
Velocity Free board
(fos) (ft.\
6 .57 2 .16
6 .99 1.92
7 .33 1.59
7 .90 1.24
7.96 1.12
3/17/2015
cu l-p-10620048 .x ls
Exhibit C-2
Drainage Report
Indian Lakes, Phase 2 1
EXHIBIT C-3
Ditch Capacity Calculations
11 . 8' 2 ' 4
Area= 16.80 sf
Wetted Perimeter = 17 .27 ft
Hyd . Radius = 0 .97 ft
12' 12' 4 2 ' 8' 11'
(''· Gcouod
Salvage Topsoi l
4" Thickness (mi n.)
PROPOSED ROADSIDE DITCH CAPACITY
NTS
Qcapacity -1.49
0.035
( 1s ao(!.31 )1/2 16.80 \ 0.0079 = 62.4 cfs
Qactual = 57.0 cfs (25 year -Drainage Area /12 -Largest Runoff Rate Phase 21)
EXHIBIT C-3
Ditch Capacity
IND/AN LAKES, PHASE 21
COLLEGE Sl4nON, BRAZOS COUNTY, TEXAS
;y,; 1008 ll't>odcl"Hk Orlv., S<Hl• !OJ. ~ stoticn, TX 77845
~McCLURE~ BROWNE ENGWEEmNC/SllRIDWG. WC.
• (9 79) 69J-J8J8 Fox: {979} 69J-2~
firm Rrtg. No. F-458
Easement Agreement for Drainage
Notice of confidentiality rights: If you are a natural person, you may remove or strike any or all of
the following information from any instrument that transfers an interest in real property before it
is filed for record in the public records: your Social Security number or your driver's license
number.
Date: July U 2015
Granter: SMILING MALLARD DEVELOPMENT, LTD., a Texas limited partnership; and
PAUL CLARKE, individually
Grantor's Mailing Address : 3608 East 29th Street, Suite 100, Bryan, Brazos ~aunty, TX 77802
Grantee (individually and collectively) and Grantee's Mailing Addresses:
BRYAN TEXAS UTILITIES
205 E . 28°' Street
Bryan, Texas 77803
WELLBORN SPECIAL UTILITY DISTRICT
411 8 Greens Prairie Road
College Station, Texas 77845
COUNTY OF BRAZOS, TEXAS-ROAD & BRIDGE DEPARTMENT
2617 Highway 21 West
Bryan, Texas 77803
Easement Property : See Exhibit "A" attached hereto and made a part hereof.
Easement Purpose : For the installation, construction, operation , maintenance, replacement, repair,
upgrade, and removal of the following utility infrastructure and related fa ci lities thereto
(co llectivel y, the "Facilities"): Storm Water Drainage ditches, drainage pipes and all other
drainage structures.
Consideration: Good and valuable consideration, the receipt and sufficiency of which are acknowledged
by Granter.
Reservations from Conveyance: As provided in Paragraph 3 below.
Exceptions to Warranty : This conveyance is made by Granter and accepted by Grantee subject to any
and all existing easements, covenants, rights-of-way, conditions, restrictions, outstanding mineral
interests and royalty interests, if any, relating to the Easement Property, to the extent, and only to
the extent, t hat the same shall be in force and effect, and either shown of record in the Office of
the County Clerk of Brazos County or that may be apparent on the Easement Property .
Grant of Easement: Granter, for the Consideration and subject to the Reservations from Conveyance and
{ 0033 4593} .
Exceptions to Warranty, grants, sells, and conveys to Grantee and Grantee's successors and
assigns an easement under and across the Easement Property for the Easement Purpose, together
with all and singular the rights and appurtenances thereto in any way belonging (collectively, the
"Easement"), to have and to hold the Easement to Grantee and Grantee's successors and assigns
forever. Granter binds Granter and Grantor's successors and assigns to warrant and forever
defend the title to the Easement in Grantee and Grantee ·'s successors and ·assigns against every
person whomsoever lawfully claiming or to claim the Easement or any part of the Easement,
except as to the Reservations from Conveyance and Exceptions to Warranty, to the extent that
such claim arises by, through, or under Granter but not otherwise.·
Terms and Conditions: The following terms and conditions apply to the Easement granted by this
agreement:
I. Character of Easement. The Easement is .nonexclusive and irrevocable. The Easement is
for the benefit of Grantee and Grantee's successors, and assigns (as applicable, the "Holder"). The
Easement granted herein is "in gross" in that there is no benefited property. Nevertheless, the Easement
rights granted herein shall pass to Grantee's successors and assigns, subject to all of the terms hereof.
The Easement shall not be construed in any manner to create or grant any rights to the public generally, to
any other person or entity, or to the owner of any other property to use or enter upon the Easement
Property.
2. Duration of Easement. The term of the Easement will expire when Easement and
Facilities provided for herein are dedicated to the public pursuant to a recorded subdivision plat of the
Easement Property.
3 . Reservation of Rights. Holder's right to use the Easement Property is nonexclusive, and
Granter reserves for Granter and Grantor's heirs, successors, and .assigns the right to use all or part of the
Easement Property in conjunction with Holder as long as such use by Granter and Grantor's heirs,
successors, and assigns does not reasonably interfere with the use of the Easement Property by Holder for
the Easement Purpose, and the right to convey to others the right to use all or part of the Easement
Property in conjunction with Holder, as long as such further conveyance is subject to the terms of this
agreement
4 . Improvement and Maintenance of Easement Property. Improvement and maintenance
of the Easement Property and the Facilities will be at the sole expense of Holder. Holder has the
reasonable right to cut, trim and control the growth of trees and other vegetation on and in the Easement
Property . Holder must maintain the Easement Property in a neat and clean condition. Holder has the right
to construct, install, maintain, replace, and remove the Facilities under or across any portion of the
Easement Property . All matters concerning the Facilities and their configuration, construction,
installation, maintenance, replacement, and removal are at Holder's reasonable discretion, subject to
performance of Holder's obligations under this agreement.
5 . Equitable Rights of Enforcement. This Easement may be enforced by restraining orders
and injunctions (temporary or permanent) prohibiting interference and commanding compliance.
Restraining orders and injunctions will be obtainable on proof of the existence of interference or
threatened interference, without the necessity of proof of inadequacy of legal remedies or irreparable
harm , and will be obtainable only by the parties to or those benefited by this agreement; provided,
{00334593} 2
2i.3
Doc Bk Vol Ps
1:11237852 OR 1283 5 214
however, that the act of obtaining an injunction or restraining order will not be deemed to be an election
ofremedies or a waiver of any other rights or remedies available at law or in equity.
6 . Dedication to the Public . Notwithstanding the foregoing, it is agreed that Grantor or the
owner of any part of Grantor's property adjacent to the Easement Property have the right to dedicate any
and all of the Easement Property to a public entity or public utility service provider and/or to convey any
or all of the improvements and facilities constructed within the Easement Property to a public entity or
public utility service provider; provided any such dedication or conveyance shall be subject to the
reservations, terms, conditions and exceptions set forth herein.
7. Attorney's Fees. If any party retains an attorney to enforce this agreement, the party
prevailing in litigation is entitled to recover reasonable attorney's fees and court and other costs.
8 . Binding Effect. This agreement binds and inures to the benefit of the parties and their
respective successors and permitted assigns.
9 . Choice of Law. This agreement will be construed under the laws of the state of Texas,
without regard to choice-of-law rules of any jurisdiction. Venue is in the county or counties in which the
Easement Property is located.
10 . Waiver of Default. It is not a waiver of or consent to default if the nondefaulting party
fails to declare immediately a default or delays in taking any action. Pursuit of any remedies set forth in
this agreement does not preclude pursuit of other remedies in this agreement or provided by law.
11 . Entire Agreement. This agreement and any exhibits are the entire agreement of the
parties concerning the Easement Property and the grant of the Easement by Grantor to Grantee. There are
no representations , agreements, warranties, or promises, and neither party is relying on any statements or
representations of any agent of the other party, that are not expressly set forth in this agreement and any
exhibits .
12 . Legal Construction . If any provision in this agreement is for any reason unenforceable,
to the extent the unenforceability does not destroy the basis of the bargain among the parties, the
unenforceability will not affect any other provision hereof, and this agreement will be construed as if the
unenforceable provision had never been a part of the agreement. Whenever context requires, the singular
will include the plural and neuter include the masculine or feminine gender, and vice versa. Article and
section headings in this agreement are for reference only and are not intended to restrict or define the text
of any section . This agreement will not be construed more or less favorably between the parties by reason
of authorship or origin of language .
13 . Notices . Any notice required or permitted under this agreement must be in writing. Any
notice required by this agreement will be deemed to be delivered (whether actually received or not) when
deposited with the United States Postal Service, postage prepaid, certified mail , return receipt requested,
and addressed to the intended recipient at the address shown in this agreement. Notice may also be given
by regular mail, personal delivery, courier delivery , facsimile transmission, or other commercially
reasonable means and will be effective when actually received . Any address for notice may be changed
by written notice delivered as provided herein .
{0033459 3} 3
Bk Vol
OR l.23 .?:5
I 4. Recitals . Any recitals in this agreement are represented by the parties to be accurate,
and constitute a part of the substantive agreement.
15. Time . Time is of the essence. Unless otherwise specified, all references to "days" mean
calendar days . Business days exclude Saturdays , Sundays, and legal public holidays. If the date for
performance of any obligation falls on a Saturday, Sunday, or legal public holiday , the date for
performance will be the next following regular business day.
THE ST A TE OF TEXAS
SMILING MALLARD DEVELOPMENT, LTD.
a Texas limited partnership
By: Smiling Mallard Management, LLC
a Texas limited liability company,
its general partner
By:
§ (ACKNOWLEDGMENT)
COUNTY OF BRAZOS §
This instrument was acknowledged before me on the ~day of July, 2015, by Paul Clarke,
individually and as Manager of Smiling Mallard Management, LLC, General Partner of SMILJNG
MALLARD DEVELOPMENT, LTD., on behalfofthe partnership .
tl ~
Notary Public, State of Texas
{00334593} 4
F's
215
Calldd 17.tl 1 Ac. Troe( 1 of Tract Fovr Sm171ng Ma//arrl ~""'"P"'6nl. ltd. V.8765. P.176 / ' 'I i 11 I J 111 I : 'I : I I , I I 11 ~ I J lo(~ I: I ,,$~'Jo I / a : 11 ~ ~ , 1, I lof/2 I ' ' -'11 ,, -~ ' . ' ' ~ . ' . ' E -------.--r ~ ~ j "' i I JI I ~ ~I ~:sos;..,WMsion 1 I 1 . rar::s SUbdivls1on I I :\! I I d ,8 I ;1 ~ =1J ~ Llndlon ~as• XX! 1 lnd10n Piros• XIV J .:1:.:I ~ J . I ~l:d _J _JI L ) .. ~ l ~ '~L ----"t--_ ----==--:::: .::::: --~ I L --==-:::-~-::--l/; -=-=----==---:----.__/ ~ -' ' :-o--": p* oc. +' b 75'"-0.11'. ~·"·"1_ -----------=----------------------------------1 -----~-------------~---,. ... ..•. ' -----------, ' ' ------'0 ' ' . . a e £aSt9ment ' / Public Dram! 1 625. 1 sq. ff. I o 0373 Acres ' 1 . P.0.8 1 I I I ~ ~ 18.JO-f Acn. Pav! Clarks V.12.JJO. P.2U ==~ ii ,, ..,, l f • 3 .§~~ I •n. E 16. 66 ACY?s (Troct 1 of Tract TWo) Smmng Matlani °"""lopmonf, ltd. V.8765. P.176 J:;I ~'° :s ;1; I b~ o :r-f5 I 16.725 Acn.s (Tract T!i~s} Sn117in9 Mo/lani Oo..,/apmont ltd. V.8765. P. 176 I I I I I I -------Scale: 1"-120' ;, L ________________ 1 _________ ~----. -------------------- -----¥------------------------~Jo":-Wlde EO'S~;.nt--------'l I V..2ge. P.2<4-6 {No Infrastructure} I The record bearing• ond ocluol m•asurod :;~°!!f,: ;~as': !t'"~,:,00 LoJ:5 ;~~tt.~ ware used as the boafe of the bearing •y.tem shoW"n on thfe pfol LINE L1 L2 LJ L4 L5 UNE TABLE BEAAINQ OIST#ICE N J1r35·55· W 113.25" S 2'24-'28" E 25.oo· S 8TJ5'J2" W "5.00' N 2·2ne· w 2~.00· H er35·32• E 65.00' LEGEND 0 -1/2• fron Rod found P.0.8. -Bulldtng Setback Une P.0.C. -Point of Commencing P.D.E. -Pubflc Drolna99 £anment P.U.E. -Public UUfll;y Eoeement ·=· r.:; m x I llJ =i )> 10620048-003-02 •·. C.l ..... 0 Page 1 of gn Texas 77845 • (979) 693-3838 MqCLURE & BROWNE ENGINEER/NG/SURVEY/NG, INC• 1008 Woodcreek Drive, Suite 103 • Cof!ege Station, •.::li:tt :?:1 ::7 .~ t ... ) (t) <:: (•J 0 •:.11 ....._. t .... l -'tJ t-., IJ) 1:t-.
•
EXHIBIT "A"
FIELD NOTES
PUBLIC DRAINAGE EASEMENT
0.0373 ACRES
Doc
0 l l~~/'852
Page 2 of2
Being all that certain tract or parcel of land lying and being situated in the J. M . BARRERA SURVEY,
Abstract No. 69, Brazos County, Texas and being part of the called 17.41 acre Tract 1 of Tract Four
described in the deed from Partners in Habitat Preservation, LLC to Smiling Mallard Development Ltd.
recorded in Volume 8765, Page 176 of the Official Records of Brazos County, Texas (O.R..B.C .) and
part of the 18.304 acre tract described in the deed from Brierpatch, Ltd. to Paul Clarke recorded in
Volume 12330, Page 214 (O .R..B.C .), and being more particularly described as follows :
COMMENCING: at a found 112-inch iron rod marking the northwest comer of the said 18.304 acre
tract, the southwest comer of a 30-foot wide easement described in Volume 296, Page 248 of the Brazos
County Deed Records (B .C.D.R..) and being in the east line of the called 17.41 acre tract, from whence a
found 112 -inch iron rod marking the northeast comer of the called 18.304 acre tract bears N 87° 34'
37" Eat a distance of 398 .74 feet for reference;
THENCE: N 39 ° 35' 55" W into the interior of the said 18 .304 acre tract for a distance of 83 .25 feet to
the POINT OF BEGINNING;
THENCE: S 02° 24' 28" E for a distance of25.00 feet for comer;
THENCE: S 87° 35' 32" W, at 50.31 feet cross the west line of the said 18.304 acre tract, continue into
the interior of the called 17.41 acre tract for total distance of 65.00 feet for comer;
TIIENCE: N 02° 24' 28" W for a distance of25.00 feet for comer;
For further information see strrVey
plat prepared with this description.
:=
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217
CASE NO .: i v::)'
FOR OFFICE
1
U_§,§ gONLlY
DATE SUBMITTED : (JJ ··IG
TIME :~~· ?>
STAFF·
C ITY OF Coll.EGE STATION
Hom e of Texas A&M University " ~~------
FINAL PLAT APPLICATION
(Check one) D Minor
($700)
D Amending
($700)
[g] Final
($932)
D Vacating
($932)
0Replat
($932)
Is this plat in the ET J? ~ Yes D No Is this plat Commercial D or Res identia l [g]
MINIMUM SUBMITTAL REQUIREMENTS:
~ $700 -$932 Final Plat Application Fee (see above).
D $233 Wa iver Request to Subdivision Regulations Fee (if applicable).
D $600 (min imum) Development Permit Application I Public Infrastructure Review and Inspection Fee . Fee is
1 % of acceptable Eng ineer's Estimate for public infrastructure , $600 minimum (i f fee is > $600 , the balance is
due prior to the issuance of any plans or development permit).
~ Applica ti on completed in full. This application form provided by the City of College Station must be used a nd
may not be adjusted or altered . Please attach pages if additional information is prov ided .
~ Six (6 ) folded copies of plat. (A signed mylar original must be submitted after approva l.)
~ Two (2) copies of the grading , drainage , and erosion control plans with supporting d rainage report.
~ Two (2 ) copies of the Publ ic infrastructure plans and supporting documents (i f applicab le).
D Copy of original deed restrictions/covenants for replats (if applicable).
~ Title report for property current within ninety (90 ) days or accompan ied by a Nothing Further Certi ficate
current w ithin ninety (90) days. The report must include applicable information such as ownersh ip , lien s ,
encumbrances , etc .
~ Paid tax certificates from City of College Station , Brazos County and College Station l.S.D .
~ The attached Fina l Plat checklist with all items checked off or a brief explanation as to why they are not.
NOTE: A my lar of the approved preliminary plan must be on file before a final plat appl icat ion w ill be cons idered
complete . If the mylar is submitted with the fina l plat appl ication , it shal l be cons idered a submittal fo r t he
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 Indian Lakes -Phase 21
ADDRESS Near intersection of Mesa Verde Drive and Kachina Cove ·
SPECIFIED LOCATION OF PROPOSED PLAT:
Nea r intersection of Mesa Verde Drive and Kachina Cove
APPLICANT/PROJECT MANAGER'S INFORMATION (Primary contact for the project):
Name Travis Martinek E-mail travis@clarkewyndham.com
3608 East 29th Street, Suite 100 Street Address
City Bryan State Te x as Z ip Code _7_78_0_2 ___ _
Fax Number (979) 846 -1461 Phone Number (979) 846-4384 .;,.____.:__ _____________ _
Rev ised 4/14 Page 1 of 9
PROPERTY OWNER'S INFORMATION (All owners must be identified . Please attach an additional sheet fo r multipl e
owners):
Name Sm ilin g Mallard Development, Ltd. E-mail travis@clarke wyndham.com
--------~
Street Address 3608 East 29th Street, Suite 100
City Bryan State Te x as Z ip Cod e 77 80 2 ------
Phone Numbe r (979) 846-4384 Fax Number (979) 846 -1461
---------------~ --------~
ARCHITECT OR ENGINEER'S INFORMATION :
Name McClure & Browne EngineeringlSuNeying, Inc . E-mail Jeffr@mcclurebrowne .com ---------
St reet Address 1008 Woodcreek Drive , Suite 103
City College Station State Te x as Z ip Code 77845 ------
Phone Numbe r (979) 693-3838 Fax Number (979) 69 3-2554 --------------------------
Do any deed restrictions or covenants exist for this property? [g] Yes 0 No
Is there a tempo rary blanket easement on this property? If so , please prov ide the Vo lume __ N._YA __ and Page No . ---
NIA
Total No . of Lots 12 ------R-0-W Acreage _2._7_7_8 ____ _ Tota l Acreage _2_2._9_63 ______ _
Existing Use _v_a_ca_n_t ___________ _ Proposed Use Single -Family Residentia l ---------
Number of Lots By Zoning District NIA NIA NIA I NIA NIA I NIA
Ave rage Acreage Of Each Residential Lot By Zoning District:
NIA NIA NIA NIA NIA NIA NIA NIA
Floodplain Acreage _o_.o_o_o _______________________________ _
Is there Special Flood Hazard Area (Zone A or Zone AE on FEMA FIRM panels ) on the property? I Yes l'X No
Th is information is necessary to help staff identify the appropriate standards to review the application and w ill be used to
help determine if the application qualifies for vesting to a previous ord inance . Notwithstanding any assertion made ,
vest ing is limited to that which is provided in Chapter 245 of the Texas Local Government Code or other applicab le law .
Is th is applicat ion a continuation of a project that has received prior C ity platting approval(s) and you are request ing t he
appl ication be rev iewed under previous ordinance as applicable?
l'X Yes
I No
If yes , provide information regarding the first approved application and any related subsequent applications (provide
add it ional sheets if necessary ):
Pro j ect Name : Indian Lakes Subdivision
City Project Number (if known): Unknown
Date I Timeframe when submitted : 2000
Revised 4/1 4 Page 2 of 9
A statement addressing any differences between the Final Plat and Preliminary Plan (if app li cable ):
Re uested wa iver to subdivision re ulations and reason for same if applicable ):
Y'A
Regarding the waiver request , explain how:
1. There are special circumstances or conditions affecting the land involved such that strict app li catio n of the
subdiv ision re ulations will deprive the a licant of the reasonable use of his land .
Y'A
2. The waiver is necessary for the preservation and enjoyment of a substantial property right of t he appl icant.
YA ~~~~
3. The granting of the wa iver will not be detrimental to the publ ic health , sa fety , or we lfa re , o r inj uri ous to oth er
property in the area , or to the City in administering subdivision regulations .
YA
4. The granting of the waiver will not have the effect of preventing the orderly subdivision of other land in the a rea in
accordance with the p rovis ions of the Unified Development Ord inance .
Y'A
Fee in lieu of s idewalk co nstruction is being requested because of the following condition (i f appl icab le):
1. I An alternative pedestrian way or multi-use path has been or w ill be prov ided outside the right-of-way ;
2 . L The presence of un ique or unusual topographic , vegetative , or other natural condit io ns exist so that st rict
adhe rence to the s idewalk 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 cap ita l improvement project is imminent that will include construction of the requ ired sidewa lk . 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
rura l context ;
5. I When a sidewalk is required along a street where a multi-use path is shown on the Bicycle , Pedestrian , a nd
Greenways Maste r Plan ;
Rev ised 4/14 Page 3 of 9
6 . I The proposed development is within an older residential subdivision meeting the criteria in Platti ng 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 wa iver 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:
NIA Streets
NIA Sidewalks
NIA San itary Sewer Lines
NIA Water Lines
NIA Channels
NIA Storm Sewers
NIA Bike Lanes I Paths
Parkland Dedication due prior to filing the Final Plat:
ACREAGE :
NIA
NIA
NIA
NIA
No . of acres to be dedicated+$ __ N_'f,_f'.l __ development fee
No . of acres in floodplain
No . of acres in detention
---No . of acres in greenways
OR
FEE IN LIEU OF LAND:
NIA No. of SF Dwelling Units X $ NIA = $ NIA
NIA (date) Approved by Parks & Recreation Advisory Board ----
NOTE: DIGITAL COPY OF PLAT MUST BE SUBMITIED 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 .
Sign~p] Date
Revised 4/14 Page 4 of 9
Existing
~
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.)
~ Drawn on 24" x 36" sheet to scale of 100' per inch .
[gj Vic ini ty map which includes enough of surrounding area to show general location of subject property in
relat ionship to College Station and its City Limits . No scale required but include north arrow .
~ Title Block with the following information:
~ Name and address of subdivider , recorded owner , planner, engineer and surveyor.
~ Proposed name of subdivision . (Subdivision name & street names will be approved through Brazos
County 911.)
[g] Date of preparation .
~ Engineer's scale in feet.
~ Total area intended to be developed.
~ North Arrow .
~ Subdivision boundary indicated by heavy lines.
~ If more than 1 sheet , an index sheet showing entire subdivision at a scale of 500 feet per inch or
larger.
~ All applicable certifications based on the type of final plat.
~ Ownership and Dedication
~ Surveyor and/or Engineer
~ City Engineer (and City Planner, if a minor plat)
~ Planning and Zoning Commission (delete if minor plat)
~ Brazos County Clerk
~ Brazos County Commissioners Court Approval (ET J Plats only)
~ 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 .
~ 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 Comm ission er's
Court of Brazos County , pursuant to the provisions of Section 21 .084 of the Texas Water Code .
~ Location of the 100-Year Floodplain and floodway , if applicable , according to the most recent available
data .
~ Lot corner markers and survey monuments (by symbol) and clearly tied to basic survey data .
~ Matches the approved preliminary plan or qualifies as minor amendments (UDO Section 3.3.E.2).
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 subdivis ion).
Proposed
~ 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 .
Rev is ed 4/14 Page 8 of 9
Existing
~
~
~
~
Proposed
~
~
~
~
Alleys .
Easements .
A number or letter to identify each lot or site and each block (numbered sequent ially ).
Parkland dedication/greenbelt area/park linkages . All proposed dedications must be
reviewed by the Parks and Recreation Advisory Board and documentation of their
recommendation provided prior to being scheduled for P&Z Commission consideration .
~ Construction documents for all public infrastructure drawn on 24" x 36" sheets and properly
sealed by a Licensed Texas Professional Engineer that include the following :
~ Street, alley and sidewalk plans , profiles and sect ions . One sheet must show the overa ll
street , alley and/or sidewalk layout of the subdivision . (may be combined with oth er
utilities).
~ Sewer Des ign Report.
~ San itary sewer plan and profile showing depth and grades . One sheet must show th e
overall sewer layout of the subdivision . (Utilities of sufficient size/depth to meet the ut ility
master plan and any future growth areas .)
~ Water Design Report and/or Fire Flow Report.
~ Water line plan showing fire hydrants , valves , etc . with plan and profile li nes show ing
depth and grades . One sheet must show the overall water layout of the subd iv is ion .
(Utilities of sufficient size/depth to meet the ut ility master plan and any future growth
areas .)
~ Storm drainage system plan with contours , street profile , inlets , storm sewer and
drainage channels , with profiles and sections . Drainage and runoff areas , and ru noff
based on 5 , 10 , 25 , 50 and 100 year rain intensity . Detailed dra inage structure des ign ,
channel lining design & detention if used . One sheet must show the overall drai nage
layout of the subdivision .
~ Deta iled cost estimates for all public infrastructure listed above sealed by Texas P.E.
[2] Letter of completion for public infrastructure or guarantee I surety in accordance w ith UDO
Sect ion 8 .6 .
~ Dra inage Report with a Technical Design Summary .
~ Eros ion Control Plan (must be included in construction plans ).
~ A ll off-site easements necessary for infrastructure construction must be shown on the fi nal plat w ith a
volume and page listed to indicate whe re the separate instrument easements were fil ed .
Separate instrument easements must be prov ided in recordable form to the City pr ior to being schedu led
for P&Z Commission consideration .
[2] Are there impact fees associated with this development? D Yes [2J No
Impact fees must be paid prior to building permit.
~ Wi ll any construction occur in TxDOT rights-of-way? D Yes l2J 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 pr ior to
issuance of a development permit.
"'Printr9rm
Revised 4/14 Pag e 9 of 9
McCLURE & BROWNE , ENGINEERING/SURVEYING, INC .
October 27 , 2015
Mr. Kev in Ferrer
1008 Woodcreek Or., Suite 103 ·College Station , Tx . 77845 · (9 79) 693-38 38
13 14 10th Street, Suite 210 ·Huntsville , Tx . 77320 · (936) 294-9749
Graduate Engineer
City of College Station
Post Office Box 9960
College Stat ion , TX 77842
Re .: Fire Hydrant As Built Flow Test
Indian Lakes Phase 21
MBESI No . 1062-0048
Dear Mr. Ferrer:
Engineer Reg . No . F-458
Survey Reg . No. 101033-00
I w itnessed the Wellborn Water representatives perform a fire hydrant flow test in accordance
with NFPA 291 standards on the new fire hydrants in Indian Lakes Phase 21 th is afternoon. The
following are the results of that test:
STATIC HYDRANT LOCATION : Chaco Canyon Drive/ Makawee Court intersect ion
FLOW HYDRANT LOCATION : Makawee Court
STATIC PRESSURE GAUGE : 92 psi
RESIDUAL PRESSURE GAUGE : 42 psi
NOZZLE SIZE : 2 .5"
DISCHARGE COEFFICIENT: 0 .90
FLOWRATE FORMULA: Q=29 .84cd 2 p0 ·5
C = discharge coef.
D = orifice size (in)
P = pitot pressure (psi)
CALCULATED FLOWRATE : 1,088 gpm @ 42 psi
Based on this information, the new water system meets the standards of College Station .
Please let me know if you have any questions .
Sincerely,
,.Travis Martinek
From:
Sent:
To:
Stephen Cast [wsud.sc@verizon .net]
Tuesday, October 20, 2015 8 :33 AM
Travis Martinek
Subject: RE : Indian Lakes -Phase 21
Travis,
Wellborn Special Utility District has inspected and approved Phase 21, Indian Lakes.
Stephen Cast
Wellborn Special Utility District
From: Travis Martinek [mailto:tmartinek@clarkewyndham.com ]
Sent: Monday, October 19, 2015 2:44 PM
To: Stephen Cast <wsud .sc@verizon.net>
Subject: Indian Lakes -Phase 21
Stephen ,
We are planning t o file the plat for Indian Lakes Phase 21 this week. The City needs you to confirm that you accept the
waterlines into your system . Can you reply to this email stating your acceptance?
I've attached the water bacteria test and the construction plans for your records .
Thanks!
Travis Martmek
Clarke & Wyndham, Inc.
3608 East 29th Street, Suite 100
Bryan, Texas 77802
Office: (979) 846-4384
Fax: (979) 846-1461
Mobile: (979) 229-9877
1
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1
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20 -21
22
23 -
24
25
26
27
28
Indian Lakes Phase 21
MBESI PROJ#: 1062-0048
Engineer's Opinion of Probable Construction Costs
March 17, 2015
Descrip tion Unit Quan lily Unit Price
Paving Construction
Site Preparation (includ es clearing ~J:rubbing) Ac. 4 .00 $1,500.00 -Earthwork (Excavation nnd Embankment for Public ROW, L.S.
_Common Ar~ and Lots +/-8,200 CYJ
1 $58,500.00
6" Lime Stabilized Subgrnde (6% by weight) S.Y. 6,~36 $4 .25
6" Crushed Stone Base S.Y. 4,005 $12.00 •¥•-····
8" Crushed Stone B ase SY. 2,453 $13.00
2" HMAC Pavement S.Y . 4,970 $12.00 -Paving Subtotal
D . S t C rarna~e 1ys em onstruction
24" RCP Pipe,_(A§.TM C-76 CL Ill) (Structural Backfill) L.F. 50 $55.00
30" RCP Pipe, (ASTM C-76 CL Im (Structural Backfill} L.F. 96 $90.00
R~ckRipRap S.Y. 116 $40.00 -
Safetv End Treatment for 24" RCP EACH 4 $900.00
Safety End Tre'~bnent for 30" RCP -EACH 4 $1250.00
Drainage System Subtotal
w s c a tcr iystCJil onstruction
8" PVC, C909 Cl 200, Water Line, L.F. 578 $27.00
6 " PVC, g909 Cl 200, Water Line L.F. 656 $25.00
4" PVC, C909 Cl 200, Water Line L.F. 393 :t21.00
12" PVC Casing L.F. 50 $60.00 -
6" M.J. Gate Valve EACH 1 $1,100.00
8" M .J. Gate Valve EACH 1 $1,200.00
8"x6" M.J. Tee EACH 1 $450 .00 -·--··
8" M.J. Anchor Couelin!l EACH 1 $350.00
6" M.J. Anchor Coupling EACH 2 $350.00
6"x4" M.J. Reducer EACH 1 $350.00
Fire IJJ.drant Assembly EACH 2 $3,600.00
Blow-off Assembly EACH 2 $1 ,000.00
Water Service, 1.5" type~ Copper, long side(> 20') EACH 3 $1,500.00
-·-Water System Subtotal
Erosion Conn·ol Construction
Erosion Contro l Plan & Sedimentation Control (per Item LS. l $4,000.00
106) (includes monitorim!. record keeoi11g,2!!~ cleanup)
Grass Seeding SY 8,952 $0.36
Headwall Protection EACH 4 $200.00
Ent.ranee/Exit EACH 1 $1 ,500.00
Erosion Control Subtotal
Construction Cost!
Total
$6 000.00
$58,500.00
$29,0 53.00
$48,060.00
$3 1,889.00
$59,640.0 0
$233,142
$2,7 50.00
$8,640.00
$4,640.00
$3,600.00
$5,000.00
$24,630
$15,606.00
$16,400.00
$8,253.00
$3,000.00
$1 l.QQ.00
$1,200.00
$45 0 .00
$350.00
$700.00
$350.00
$7 200.00
$2,000.00
$4 500.00
$61,109
$4,000.00
$3,22~72
$800.00
$1,500.00
$9,523
$328,404
The above con~1rnc tion estimate is based on the engineer's preliminary opin ion of probable constrnction costs. This estimate
constitutes our best judgment at this time. Please note that the engineer does n ot have any control over contractor or supplier
workloads and the degr ee to which inflation may affect project costs between now and the bid date. During construction,
add itional features may become apparent as the work progresses, which will result in an increase in cost.
1 of2
/
INDIAN LAKES PHASE 21 -FINAL PLAT ·
RESPONSE TO STAFF REVIEW COMMENTS NO. 1
PLANNING
1. T he Applicant intends to allow lot owners to choose where they wish to take access. Chaco
Canyon is not an arterial street ; therefore , driveway access to this street is perm itted. Please
no te that the lots in Phase 20 , as shown on the approved Prelim inary Plat , will be required to take
access from Chaco Canyon.
2. No comment.
3 . No comment.
4 . No commen t.
ENGINEERING
1. See revised Final Plat.
2. See revised Final Plat.
3. This note has not been added . It is up to the builder, homeowner, and their engineer to
determine the requirements for the slab of the house in this subdivision since no bu ilding permits
w ill be required through the City of College Station . Additionally , no lots are intended to have fill
in excess of 2 feet.
4 . See revised Final Plat.
5. A temporary utility easement w ill be provided and filed of record prior to the recording of the Final
Plat. A pe r manent utility easement will be provided with the Final Plat for Phase 20 .
6. See revised construction plans .
7. See revised construction plans. The waterline was extended 5 feet past the common lot
boundary for Lots 5 and 6.
8. See revised drainage report .
9. See revised drainage report.
10 . See rev ised drainage report .
11 . See attached cost estimate and revised construction plans .
SANITATION
1. No comment.
3/18/2015 Page 1 of 1
/
CITY OF Coll.EGE STATIO
Home of Texas A&M Univers ity'
FOR O FF ICE USE ONLY
C ASE NO .: [I? :l-01>' ';OfJO II
DATE SUBMITTED : 'J_,/[b:f'
TIME : f 1: l/l/ '
STAFF: &,.St
PLANNING & DEVELOPMENT SERVICES
TRANSMITTAL LETTER
Please check one of the options below to clearly define the purpose of your su bmittal.
0 New Project S ubmitta l
O Incomplete Project Submittal -documents needed to comp lete an app lication . Case No .:
• Existing Project Submittal. Case No .: =14. /b:-/€'"I/
Project Name Ll~" fAfte$ /Ac,.~ ZJf
Contact Name c J6f~ ~~
We are transmitting t he following for Planning & Development Services to revie w and comment (check all that apply):
0 Comprehen sive Plan Amendment
0 Rezoning Appl icat ion
O Co nditional Use Permit
0 Preliminary Pla n
JJ Final Plat
0 Development Pl at
0 Site Plan
0 Special District Site Plan
O Special District Building I S ign
0 Landscape Plan
0 Non-Residential Architect ural Standa rds
0 Irrigation Plan
0 Variance Request
0 Deve lopment Permit
0 Development Exaction Appeal
0 FEMA CLOMA/CLOMR/LOMA/LOMR
0 Grading Plan
0 Other -Please specify below
IN F RASTRUCT URE AND ENGINEERING DOCUM E NTS
A ll i nfrastru c t ure docu ments must be subm it t ed as a complete set .
The fo ll owing are included in the comp lete set:
0 Comprehensive Plan Amendment 0 Waterli ne Construction Documents
0 Tx DOT Driveway Permit 0 Sewerline Construction Documents
0 TxDOT Utility Pe rmit 0 Street Construct ion Documen ts
0 Drainage Letter or Report 0 Ease ment Appl ication
0 Fire Flow Ana lysis 0 Other -Please specify
Specia l Instructions:
10/10 Print Form
/
TO:
CLARKE & WYNDHAM
REAL ESTATE INVESTMENT SERVICES
Mark Bombek
TRAVIS MARTINEK
3608 East 29 th Street, Suite 100
Bryan , Texas 77802
Office: (979) 846 -4384 Fax: (979) 846-1461 Celi: (979) 229 -98 77
TRANSMITTAL SH E ET
DATE:
3/18/2015
COMPANY: TOTAL NO . OF PAGES INCLUDING COVER :
CS Ping & Dvlpmt Serv See below
FAX NUMBER : PHONE NUMBER :
RE :
Indian Lakes-Phase 21 Final Plat and Construction Plans
0 URGENT 0 FOR REVIEW 0 PLEASE COMMENT 0 PLEASE REPLY 0 PLEASE RECYCLE
NOTES/COMMENTS :
Attached are the following:
• Response to staff comments
• 1 -2 4"x36 " copy of the revised Final Plat
• 1 -24"x36 " copy of the revised construction plans
• 1 -copy of the revised drainage report
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