HomeMy WebLinkAbout02-16-09 Drainage and Flooding Committee minutes
2
MINUTES OF THE DRAINAGE AND FLOODING COMMITTEE
February 16, 2009
1. Call to Order
The meeting was called to order by Chairman Mike Mosteit at 5:00 p.m.
Committee Members Present: Council Members: Chairman Mike Mosteit, Vice Chairman Mike
Clausen, Committee Members Chuck Engelken and Tommy Moser.
Committee Members Absent: Howard Ebow
Other Council members Present: None
Members of City Employees Present: Assistant City Secretary Sharon Harris, City Manager Ron
Bottoms, Director of Planning Tim Tietjens, Assistant City Manager John Joerns, Assistant Public
Works Director Don Pennell and City Engineer Rodney Slaton.
Others present: Gary Struzick with Klotz and Associates, Adam Yanelli, John Saavedra, John
Randolph, Charles Nute, Richard Smith, Richard Winn, Patricia Clark, Jewel Blount, Cheryl
Westmoreland, Ted Powell, Charles Rothmund, Joe Rodriguez, Maggie Anderson and Melinda Cox.
2. Consider approval of Minutes of Drainage and Flooding Committee Meeting held on January 19, 2009.
Motion was made by Committee member Engelken to approve the minutes as presented. A second by
Committee Member Clausen. The motion carried.
Ayes: Tommy Moser, Mike Mosteit, Mike Clausen, and Chuck Engelken
Nays: None
Abstain: None
Absent: Howard Ebow
3. Petitions, Remonstrance's, communications, and citizens and taxpayers wishing to address the
Drainage and Flooding Committee
Charles Nute - 10836 Spruce Drive South La Porte, TX. - addressed the committee with concerns
regarding process of the drainage and flooding projects by the city and the upcoming hurricane
season.
Melinda Cox - 1516 E. Beltway 8 #1503 Pasadena, TX. - address the committee on behalf of her
mother Jewell Blount regarding drainage and flooding issues at her home located at 606 S. 3rd La
Porte TX.
4. Administrative Reports
Planning Director Tim Tietjens and Gary Struzick updated the committee on the twelve projects staff
was directed to move forward with by City Council at the February 9, 2009 City Council Meeting.
Mr. Tietjens provided a report to the committee on the meetings held with Harris County Flood Control.
District and Precinct Two.
Drainage and Flooding Committee Meeting - February 16,2009
Page 2
Mr. Tietjens also reported staff visited the Pelican Bay subdivision and met with a few members of the
homeowners association and discussed solutions to the drainage and flooding the residents have
been experiencing.
John Randolph with Harris County Flood Control District provided the committee with an update on
F216 and F1016 projects.
John Saavedra with Harris County Precinct Two reported the Valley View storm sewer project had
been awarded.
5. Set date for next meeting
The Drainage and Flooding Committee set the next meeting date for March 23, 2009, at 5:00 p.m. in
the Council Chambers.
6. Committee Comments
Chairman Mosteit directed staff to provide a presentation/update to the full City Council at the next
Council Meeting.
7. Adjournment
There being no further business to come before the Committee, the meeting was adjourned at 6:37
p.m.
Respectfully submitted,
~~ft
Assistant City Secretary
Approved this 23rd day March 200~. . t""--..
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C airperson Mike Mosteit
4
k lot z 4~_ ass 0 cia t e s
1150 Dairy Ashford, Suite SOD
Houston, Texas 77079
T 281.589.7257 F 281.589.7309
housto n .office@klotz.com
March 16, 2009
Mr. Ron Bottoms
City Manager
City of La Porte
604 West Fairmont Parkway
La Porte, Texas 77571
Re: Addendum to Work Authorized February 6, 2009
Proposed Scope of Services for Constructing Sheet Flow Relief Structures
City of La Porte, Texas
Klotz Associates Project No. 0127.009.000
Dear Mr. Bottoms:
As requested, submitted herein is a proposal for additional professional engineering services for
design and preparation of bid documents to construct sheet tlow relief swales and stonn sewer
outfall improvements for the City of La Porte (the City). Per your request, this proposal is an
addendum to the work authorized by the City, February 6, 2009 per Attachment.
This addendum supplements the work from our authorized Letter of Agreement adding:
Creekmont Section One, Fahmont Park West subdivisions, bid phase services and construction
phase services to the agreement.
UNDERSTANDING OF THE PROJECT
Creekmont Section One drains natw'ally from west to east by storm sewer and overland sheet
flow toward Harris County Flood Control District (HCFCD) Unit BI06-00-00. Sheet flow
collects in the low-lying areas that cause flooding to occur for events more frequent than the 100-
year storm even. Floodwater from these areas eannot drain properly resul1ing in repetitive flood
damage and losses for homeowners who are not in the IOO-year flood plain. Excess runoff is
currently stored in streets and roadways. The homes along HCFCD Unit BI06-00-00 are
elevated above the roadway and function as a levee that retains water within the subdivision. In
addition, Fairmont Park West experiences a similar drainage problem and drains from west to
east toward HCFCD Unit B106-00-00 between Fairmont Parkway and Main.
The proposed improvements for Creekmont Section One and Fairmant Park West are identified
as projects No.3 and No.7 from the City Wide Drainage Study, January 2009. Proposed
improvements for these areas may require a combination of sheet flow relief'with increases in
storm sewer pipe size and inlet capacity. Swales are proposed to relieve sheet flow in low-lying
k lot z 4~. ass 0 cia t e s
Mr. Ron Bottoms
March 16, 2009
Page 2 of6
areas between the subdivision and B 106-00-00. Stoml sewer pipe increases and additional inlets
are proposed for areas where the stonn. sewer outfall is not in a low-lying area or the spacing
between homes cannot accommodate a swale.
Klotz Associates will coordinate with City staff to locate underground utilities, resolve utility
conflicts, and prepare plans, specifications, and estimates for permitting and construction in
Harris County (He).
On receipt of written notice-te-proceed, Klotz Associates, Inc. will pelfonn these additional
engineering services as listed under the Scope of Basic Services for the proposed sheet flow
reliefswales and storm sewer outfalls for Creekmont Section One and Fairmont Park West.
SCOPE O~~ BASIC SERVICES
Pro;ect Planning and Initiation
A.
1.
2.
3.
B.
L
2.
3.
4.
Identify drainage easements and survey locations from plal1R provided by City Staff.
City to provide record drawings showing city utilities within the project limits.
Contact other utility companies for locations of subsurface facilities.
Preliminary Engineering
Field Investigation - Perfol1n one (1) site visit to identify utilities and locations to be
surveyed.
Coordinate with surveyor to communicate location of proposed improvements. A TBM
shall be placed at these locations and identified in plans.
Calculate drainage for sizing improvements.
Identify low points, existing drainage easements, utility easements, existing storm sewers,
sheet flow patterns. Determine if a sheet flow relief swale, storm pipe upsize Or
combination will be needed.
C. Finat Design
1. Prepare plans, specifications and estimated cost Prepare full sized drawings at a scale of
r' = 20', bid list, specifications and other construction documents.
2. Layouts and typical details: use standardized typical details, typical sections for outfall
structures. Prepare construction cost estimates. Design details including plan view, cross
sections, variables for dimensions with table of measured variables, elevations, inlet
capacities and outfalls structUres.
3. List of design sheets \\Jill include:
k lot z .~. ass 0 cia t e 5
Mr. Ron Bottoms
March 16. 2009
Page 3 of6
a. Cover sheet. index and general notes sheet (1)
b. Survey control and project layout (1)
c. Typical sections with drainage data (1)
d. Standard detail sheet. showing swale and pipe options using variables with a
table listing elevations. lengths. slopes and other design constraints (2)
e. Typical construction phase with SWPPP (1)
f. Standard Harris County detail sheets (3)
4. Submittal milestones will include: 50%. 90% and Mylars at 100%
5. Coordinate with City and County staff on design requirements and storm water quality.
Draft project manual with standards. specifications; blank bid tabs and permit
requirements for bidding.
6. Finalize construction estimate.
7. Mylar drawings and final Project Manual are to be signed and sealed, and submitted for
signatures from applicable agencies for permit approval.
Deliverables:
. Draft submittals on 11" x 17" (or half-sized).
. 22" x 34" size Mylars
. Electronic copies of intermediate and fmal documents, contracts~ scopes~ and other work
products on Compact Disks (CDs).
. Submit text files in Microsoft Word 2003 or later version.
. Submit dra'wing files and exhibits in AutoCAD R 2004 or later.
. Submit a duplicate of text and drawing files in PDP format.
. Projed Manual with bidding requirements, contract forms, contract conditions and
specifications. and a final cost estimate of construction cost.
In addition, Klotz Associates will provide services during the bid phase and construction phase
for locations autllOrized in letter dated February 6, 2009 for Brookglen and Fainnont Park East as
well as Creekmont Section One and Fainnont Park West. Additional scope of Contract and
Construction Phase Services include:
D. Contract Phase
Bid Phase Services
1. Send copies of bid documents to loca.l bid information services (up to 3 copies).
k lot z t~. ass 0 cia t e 5
Mr. Ron Bottoms
March 16, 2009
Page 4 of6
2. Maintain a bidders list. The scope includes printing and distribution of bid sets
(including reproduction expenses). Bidders are responsible for pick up and delivery of
bid sets as directed by the City.
3. Participate in the pre-bid conference for prospective bidders
4. Answer questions of bidders and suppliers during the bid preparation period
5. Post addenda to drawings and project manual and issue addenda, as required
6. Attend bid opening
7. Check bids for errors, responsiveness and tabulate results
8. Review the qualifications of the apparent low bidder if unknown
9. Issue a recommendation for award
10. Send contract documents to Contractor and City for signatures. City will send signed
contract to the Contractor
Construction Phase Services
11. Participate in the preconstruction meeting
12. Receive, review and forward monthly pay requests to City of La Porte
13. Review & Approval of Contractor Submittals, including shop drawings & concrete mix
designs
14. Respond to contractor's requests for infonuation (RFIs) by phone and email
15. Address change order requests
16. Perform up to six (6) site visits to inspect work performed to date, each month and verify
contractor pay requests. Construction schedule is estimated to be six (6) months. Klotz
Associates will prepare monthly status reports included with invoicing each month that
will include action items and percent complete from City for contractorls pay request.
The City will provide day-to-day inspections of construction for regulatory compliance
and percent complete estimates.
17. Conduct one (1) inspection at substantial completion; prepare punch list and one (1) fmal
inspection. Contractor is responsible for submitting to HCPlD Permits, Notification of
Substantial Completion, in writing
18. Contractor is responsible for maintaining record drawings for submittal after construction
As part of this agreement, sub-consultant services considered to be additional assignments for
this project are included in the Scope of Additional Services as well. Klotz Associates will
provide these additional sub-consultant services as follows:
k lot z .~~ a $ S 0 cia t e s
Mr. Ron Bottoms
March 16, 2009
Page 5 of6
SCOPE OF ADDITIONAL SERVICES
A. Professional SurveyinQ. Services
Surveyor will provide one-line drawings, TBMs for each location, cross sections,
topographic points, utility research and location, storm sewer features, tie in property
boundary comer monuments and right-of-way and easement limits.
TERMS
In addition to our previous authorization, we propose to complete the tasks listed herein for
preparation of construction documents for proposed sheet flow relief and storm sewer outfall
upgrades for Creekmont Section One and Fairmant Park West.
Klotz Associates proposes to do this work on a lump sum basis in accordance with the terms of
the Letter of Agreement for Consulting Services attached to this letter. Two (2) signed originals
are enclosed for your approval and signature.
BUDGET AND FEES
1.) Previous engineering fees authorized:
Basic Engineering Services
Additional Services
Subtotal Previous Authorization
$28,000.00
$19.800.00
$47,800.00
2.) Added fees for perfOlming theses services are listed below:
Basic En?:ineerinlZ Services
Design Services
Bid Phase Services
Constmction Phase Services
Subtotal Added Basic Service
Additional Surveying
Subtotal for Additional Fees
=
$31,800.00
$ 6,600.00
$ 10.600.00
$49,000.00
$ 6.900.00
=
3.) Total Contract Amount
$55,900.00
$103.700,00
k lot z ~~. ass 0 cia t e s
Mr. Ron Bottoms
March 16, 2009
Page 6 of 6
SCHEDULE
It is expected that survey and preliminary engineering will be complete within four (4) weeks of
authorization and notice to proceed. Final design and preparation of bid documents is expected
to be complete in four (4) weeks. Design engineering services for construction of the sheet flow
relief swales and storm sewer outfall improvements will be completed within nine (9) weeks of
receipt of written authorization to proceed. including review submittals to the County.
Advertisement and sale of bid packages is estimated at two (2) weeks and bid phase services
should be completed within four (4) weeks from the date of written authorization.
Three (3) months is estimated to complete construction of these improvements after the contract
is awarded to the winning bidder. Constmction phase services shall be provided as outlined
herein.
CLOSING
All terms and conditions remain in place as per our prior Letter of Agreement authorized
February 6, 2009 (see Attachment).
If this proposal meets with your approval, please sign the attached contracts and return one (1)
original to Klotz Associates. We are prepared to proceed within 24-hours of receipt of your
written authorization to proceed.
Thank you for considering Klotz Associates, Inc. for these community improvements for the
City of La Porte, Texas. Please do not hesitate to contact Brian Addicks, P.E., Bob Johnson. P.E.
or me \\'ith questions regarding this addendum.
Accepted by:
Michael A. Ogdel
Sr. Vice President
Ron Bottoms
City Manager
Date
1\1AO:az
Attachment
PrlntName
k lot z 4~_ ass 0 cia t e 5
1160 Dairy Ashford. Suite 500
Houston, TeJ<<lS 77079
T 281.589.7257 F 281.589.7309
housto n .oHi ce@kJotz.com
March 13. 2009
Mr. Ron Bottoms
City Manager
City of La Porte
604 West Fairmont Parkway
La Porte. Texas 77571
Re: Scope of Professional Engineering Services for an Impact Analysis for
Proposed Sheet Flow Relief Structures, Projects # 1 through #12 of CWDS
City of La Porte, Texas
Klotz Project No. 0127.010.000
Dear Mr. Bottoms:
As requested, submitted herein is a proposal for professional engineering services to prepare an
--- '-'-iinpacr aJiaIysisTor proposed Improvements to construct sheet flow reher-swales ani! storm-sewer
outfall improvements for project No.1 through No. 12. These services will be performed under
the attached Letter of Agreement for Consulting Services.
This proposal replaces all previously submitted proposals before the date ofthi8 letter for
services to evaluate impacts from Projects No. I through No. 12..
UNDERSTANDING OF THE PROJECT
In a report entitled "City Wide Drainage Study" (CWDS) accepted by City Council in January
2009, Klotz Associates recommended construction of relief structures to address drainage issues
associated with sheet flow; twelve (12) locations were identified to receive these improvements
immediately if feasible. The twelve (12) projects identified in the report are for the construction
of sheet flow relief swales and/or improvements to storm sewer outfalJ pipes and inlets so sheet
flow in these areas can outfall into Harris Cotmty's (or the County) main stem streams that are
maintained by Harris Cotmty Flood Control District (HCFCD). Sheet flow collects in the low
lying areas that cause flooding to occur for events more frequent than the 1 OO-year storm event.
Floodwater from these areas cannot escape, resulting in repetitive losses for home owners 'who
are not in the IOO-year flood plain. Excess runoff is stored in the streets and cannot flow out
until the storm sewers empty or until ,vater floods homes.
All proposed development draining directly to County facilities require a review by the HCFCD
for impacts to flood waters. HCFCD is the local regulatory branch charged with Stonnwater
Management compliance for all projects draining to, or \\'1thin, Harris County main stem
k lot z 4~. a $ S 0 cia t e s
Mr. Ron Bottoms
March 13, 2009
Page 2 of 4
streams. As a participant in the National Flood Insurance Program (NFIP) proposed new
development and significant redevelopment draining to County drainage facilities, cannot result
in increased peak discharges and/or water surfaces elevations in receiving streams. Additional1y~
such development cannot have impacts to floodplain limits due to fill for areas where the base
flood elevation (BFE) has been determined. Before acceptance of final design, the County
requires an impact study be submitted to HCFCD and HC Watershed Coordination for review
and acceptance of, and/or no objection to, the proposed project before permitting and
construction.
As part of our services, Klotz Associates will prepare an impact analysis report for submittal to
the HCFCD for review. This signed and sealed report wiii be submitted to HCFCD and v.>ill
describe the methods used to select sheet flow relief outfall locations and storm sewer
improvements for the tweLve (12) projects. The purpose of the study is to demonstrate that the
proposed improvements will have "no-impact" on receiving streams for stonn frequencies up to,
and including, the lOO-year rainfall event. Included in the report shall be calculations, maps, and
_ supporting dataprepared. hy..both parties. The ell}' may ref~enc.e. this report in submittals.teL _ .
Harris County Public Infrastructure Department (RCPill), Plan Review section for acceptance
and permitting purposes for the locations performed by City staff.
Coordination between the City of La Porte and Klotz Associates will be required and include
emails, meetings, and telephone conference calls as necessary through the completion of the
project.
On receipt of written notice-to-proceed, Klotz Associates will perform professional engineering
services for the City as listed under the Scope of Basic Services described herein and in
accordance with the Letter of Agreement for Consulting Services.
SCOPE OF BASIC SERVICES
A. Proiect Planning and Initiation
I. Develop Project Plan, kickoff, resource allocation & schedule.
2. Meet \\1th both the City and HCFCD,
3. City will provide geometric data, cut & ftll quantities, and other design information
for projects perfonned by City staff.
4. Klotz Associates \vill gather design data as needed from other sources.
k lot z C~. ass 0 cia t e s
Mr. Ron Bottoms
March 13, 2009
Page 3 of4
B. Analysis
5. During preliminary design, identify tailwater conditions and other constraints for all
proposed locations to receive improvements.
6. Calculate drainage areas, runoff and allowable ponding volumes to find desired
conveyance location and; size structures & swales accordingly. Check available
locations.
7. Compare pre- and post-project peak flows for mitigation requirements. Determine
mitigation, updated RAS model and compare water surface elevations.
8. Prepare signed and sealed report for HCFCD submittal, include write up~ exhibits
and tables.
9. Meet with HCFCD to submit and discuss relief structures and methods in report.
10. -. HCFCD review period is estimated between two (2) and four (4) weeks
11. Address comments if any and submit revision.
12. Upon County acceptance of proposed improvements, update City staff for Express
hyiew Sheet.r.eq.uiremMts. "" .. .. ... ____.... __ .. . .... _ . ..... .
C. Deliverables:
13. Copies of correspondence from He and HCFCD.
14. Originals of signed and sealed impact analysis for City and HCFCD.
15. Electronic copies in PDF format of report, models and calculations on Compact
Disks (CDs).
TERMS
In tbe event HCPID objects to the conclusions described in our report, or declines approval, in
lieu of further detailed study based on FEMA requirements that are not described under the
Scope of Basic Services, work shall be stopped and a meeting with the City and COLmty shall be
scheduled to identify additional work to be perfonned.
Specific items excluded from this proposal are Conditional Letter of Map Revision (CLOMR),
CLOMR based on Fill (CLOMR-F) or other submittals to FEM.A... These services are considered
additional services and may be perfonned by Klotz Associates for an additional fee.
BUDGET AND FEES
Klotz Associates proposes to do this work on a lump sum basis in accordance with the terms of
the Letter of Agreement for Consulting Services attached to this letter. Two signed originals are
enclosed. The engineering fee associated with performing these services is ~19,200.00.
k lot z .~~ ass 0 cia t e 5
Mr. Ron Bottoms
March 13, 2009
Page 4 of4
SCHEDULE
It is expected that the report will be completed and submitted to HCFCD within three (3) weeks
of authorization and notice to proceed. The review periods for County review very between two
(2) weeks and four (4) weeks. If HCFCD has comments, the report will be revised and
submitted for acceptance within two (2) weeks. Based on a review time of four (4) weeks, the
work proposed herein will be completed within nine (9) weeks of receipt of 'Written authorization
to proceed.
CLOSING
If this proposal meets with your approval, please sign the attached contracts and return one (I)
. originaL to Klotz Asso.ci~t~s,_. We_arr;, .p.r~paredjQ proc~d .within 2-4:hoill'~ .9f ~~int of yom-
written authorization to proceed.
Thank you for considering Klotz Associates. Inc. for these community improvements for the
City of La Porte, Texas. Please do not hesitate to contact me with questions or would like to
discuss this proposal.
Brian D. Addicks, P.E., C.F.M.
Storm WaJer Department Manager
BDA:ng
Attachment
k lot z .~. ass 0 cia t e s
LETTER OF AGREEMENT FOR CONSULTING SERVICES
This Agreement is made and entered into this _th day of
(hereinafter called the "Engineer"), and the
, 20_, by and between Klotz Associates, Inc. of Harris County. Texas
CITY OF LA PORTE
(hereinafter called the "Client")
That whereas the Client has requested services of the Engineer in relation to:
IMPACT ANALYSIS FOR PROPOSED SHEET FLOW RELIEF STRUCTURES
PROJECTS #1 THROUGH #12 OF CWDS
CITY OF LA PORTE, TEXAS
KLOTZ ASSOCIATES PROJECT NO. 0127.mO.OOo
(SEE ATTACHED PROPOSAL LETTER DATED MARCH 13,2009)
{herein called the "Project"}.
NOW, THEREFORE, the CLIENT and the ENGlNEER. in consideration of the mutual covenants hereinafter set fortb, agree as follows:
Upon receipt of the executed copy of this Agreement, the Engineer will perform services to provide the Client with the data, information or
opinion requested, proceed with the work as expeditiously as practical, inform the Client of any delays and provide the Client with a
minimum of two copies of the final product or findings.
The Client will place at the Engineer's disposal all available information pertinent to the Project including previous reports and any other
relative data and will arrange for and provide access to the Engineer, without liability of any nature to the Enguleel' except for Engineer's own
'peglh~~~~J. ~~_ ~~~u.P.C!.!!:1!.'L!.~li9 .!i!l4 p-rivate la~~ a~ .r~CL~!!e~ for the l?~gineer to p~rf~rm h_~~ _~o.~ m..~~~ th_i~ ~!?l:~~?~
Payments for services of the Engineer wilt be based on a fixed price of Nineteen Thousand Two Hundred Dollars ($19,200.00). Invoices will
be submitted monthly and will reflect the percentage of the project completed at the date of the invoice.
Reimbursable expenses shall mean the Engineer's actual expense of transportation and subsistence of principals, employees and consultants
when traveling in connection with the Project, consultant's fees, field office expenses, toll telephone catis and telegrams, reproduction of
reports, drawings and.similar Project related items.
Payments for services, additional s~rvices and reimbursable expenses shall be made by the Client within thirty (30) days after receipt of
Engineer's invoice. All moneys not paid the Engineer when due, hereunder shall bear interest at 1.5% per month. calculated daily, on the
unpaid balance.
Termination of this Agreement prior to completion must be made in writing and may be made by either party. If this Agreement is terminated
at any time by either party, the Engineer shall be paid for services actually performed.
Client hereby agrees that Engineer's total liability to Client for injuries, claims, losses, expenses, Or damages arising out of or related to the
Project or this Agreement shaH not exceed the total compensation received by Engineer under this agreement. Client further agrees that
Engineer shall not be liable for any injuries, claims, losses, expenses, or damages, except to the extent of Engineer's own negligence or willful
misconduct.
All documents, including original drawings, estimates, specifications, field notes and data are illld shall remain the property of the Engineer as
instruments of service. The Client may obtain a set ofreprodllciblcs.
This Agreement represents the entire agreement between Klotz Associates, L'lC, an.d tbe Client atld may be amended only by written
instrument signed by both parties. This Agreement shan be governed by the laws of the State of Texas.
Name
Date
Name: Michael A. Ogden
Title: Sr. Vice President
CLIENT:
City of La Porte
Rev. 06/07
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In-House Drainaae Proiects
FY 2008/2009
Cost Analysis
Bois '0' Arc I Santa Anna
Material: 36 LF 24" RCP $ 1,116.00
GS/lOO 31. 46 tons $ 361.79
White Rock 2 tons $ 24.00
Limestone 6 tons $ 121.38
Material Total: $ 1,623.17 $ 1,623.17
Equipment: Gradall 8hrs $ 328.00
Dump Truck 8hrs $ 368.00
Dump Truck 8 hrs $ 368.00
1 Ton Truck 4hrs $ 108.00
Trailer 4hrs $ 40.00
Equipment Total: $ 1,212.00 $ 1,212.00
Labor: Senior Operator 8hrs $ 109.68
Operator I 8hrs $ 90.14
Operator I 8hrs $ 90.08
Operator I 8hrs $ 109.08
Operator I 8hrs $ 90.08
Labor Total: $ 489.06 $ 489.06
Project Total ------------------------------------------------------------------------------- $ 3,324.23
Mission @ North "P"
Material: 5 Sack Concrete 2.5 CY $ 317.90
#4 Rebar 200 LF $ 36.00
Material Total: $ 353.90 $ 353.90
Equipment: 1/2 Ton PU 5 hrs $ 91. 00
1 Ton Truck 5 hrs $ 135.00
Dump Truck 1 hr $ 56.00
Equipment Total: $ 282.00 $ 282.00
Labor: Senior Operator 5 hrs $ 96.18
Operator I 12 hrs $ 204.38
Operator I 12 hrs $ 168.90
Operator I 5 hrs $ 63.55
Operator I 5 hrs $ 68.55
Labor Total: $ 601.56 $ 601.56
Project Total ------------------------------------------------------------------------------- $ 1,237.46
MEETING HANDOUTS
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1.) Exhibit ~2 (Klotz Package October 3, 2008 Issue)
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Inlet ca~acity for Fleetwood is 500 feet of road per i4Iet.(A
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stated inithe Klotz Package) There are two drainage ouUets 0
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Fleetwoqd resulting in excess storm runoff travelin$ fro
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Fleetwodd down adjacent roads to their drainage outlets.! !
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2.) Klotz p.ckage (October 3, 2008 issue, located in the sectio
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labeled 1ables, table1) this state: There are 1318 homes Ilbcate
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in Fairmbnt Park East and that 500 of these lots will likely t
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benefit d~rectly by these drainage improvements.
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3.) Klotz P~ckage (March 10, 2008 page 10 of 15. Shott> Ter
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Drainag~ Proiect 4. Fleetwood Drive Outfall Pipe Up~izing
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This sec~ion states: The city has informed the Klotz As~ociate
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about a city project for upsizing the outfall of Fleetwoou drive
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currentlt. the outfall pipe is a 60 inch pipe and serves ani.area 0
approxiJately 120 acres. I.
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nteria Manual, Cijdpter
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to section 5.4 Stf~es: al
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drainage
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storm ttquencies; Type of Facility, Ditches and ,Q1,llvert
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Drainag~ 100 acres or more require a 25 year drainage pl~.
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With havinf the understanding of the point made in state1tnt 4.
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above, and ~aving the knowledge the actual building of F~" ,rmon
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Park East ~redates the copied code above inevitably enfo~~es th
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resolution Qf inadequate drainage. i I
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Margaret D. Comptqn
December 11, 2008
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March 10, 2008
Page 10 of 15
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k lot z C~. ass 0 cia t e s
good to hydraulically evaluate connecting both storm sewer systems to see what benefits
might be derived by the connection.
2. The plans show utilities in the area when the outfall pipes are proposed. Will utility
adjustments to be needed to 12" water line, SBe line, electrical line or other utilities a1
the two new proposed outfalls?
3. The plans show a new junction box, near the existing 60" and 36" outfalls, to diveI1 the
flows from the north more directly into the basin. We discussed the possibility of using
HDPE pipe in the area that is not under the pavement and also placing a weir type
structure in the new junction box to force low flows into the basin. Could these two items
be considered for the project to make it easier and more economical to construct and to
make more use of the detention basin volumes? Recommend adding rip rap to the end of
both new outfall pipes for this project to reduce erosion potential. Should the pipe(s) be
extended to go more fully into the detention basin?
4. The proposed outfall could be directed at a 30 to 45 degree angle (not 90 degrees as
currently shown on the plans) from the road into the basin to make the flow transition
from the storm sewer into the basin easier and thereby reducing the HG L of the system.
5. A curb cut could be provided from the low spot(s) of the road to allow ponded flows to
get off of the road and into the detention basin or ditch easier, thereby reducing the
ponding depth in the roadway. However, the sidewalk elevation would require
adjustment to provide the desired sheet flow path. Appropriate erosion control measures
would also need to be included in the improvements.
The project as currently designed by the City may not produce the desired reduction in
ponding depths. It is our opinion that an overland or sheet flow path is needed to drain the
collective areas from Mesquite Street south. Recommend that curb cuts and overland
sheet flow paths be constructed from Driftwood into the outfall ditch and another
overland sheet flow path be constructed from Driftwood into the detention pond to the
east. Both of these two overland or sheet flow paths should help to drain the street easier
during major rainfall events and could be constructed today with minimal cost.
Other more expensive options exist to the drainage and to address sheet flow or overland
flow include: 1.) including an above ground sheet flow path along the west edge of
Driftwood, adjacent to the roadway, to the outfall ditch, 2.) lowering a portion of
--Dnf'twoo0101fiebutfallcfItch or by TJ aading ina larger pIpe from Mesq-ulte Street to the
outfall ditch or to the detention basin. Each of these other options are more expensive and
would require more easements. Recommend that further evaluation be prepared of tllese
other options. Coordination with HCFCD will be required if a new outfall pipe is constructed_
Short Term Drainage Project 4.) F!eet11Jood Drive Outfall Pipe U/7sizinrs
Fleetwood Drive is located near Driftwood Drive (see Exhibit 9). The City has informed
--- --------KIQtz-A.s.Raciates.-ahout a-city~p.roj eCLfOT--ups-izing-the-GUtJaJl-oJ- -J'ketwoOG--J-}Fi-ve;.- _
Current] the outfall pipe is a 60 inch pipe and serves an area of approximately 120 acres.
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B. Design storm runoff, based on the type of facility and storm frequency listed in Section
5.4.
C. 100 - year runoff
D. Route of overland flow including the overflow to a drainage channel or detention facility
E. Water surface profiles for the 25-year and/or I DO-year storms in the outfall channel. All
available information will be considered when making this determination.
F. Flow per inlet
G. Ma."Ximum ponding elevation
5.2.2
Detailed drainage calculations shall be submitted with the construction plans.
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5.2.3 A lot grading plan should demonstrate that the finished grading plan will drain to approved
collection and discharge points and thafthe overland flow of water from adjacent properties will
not be impacted
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5.2.4 The hydraulic gradient for the design storm may be shown on the construction drawings.
Calculations for the elevat.i.qn.fu.r the hY....dI].yli.g...gr%.GimLshall_!?~Jlrovide~ wit~~~torm
drain3l?e calcu1atio~. ~- hydraulic gradient must be b~iow-~~__~~~~_f.9~ -0-~ de~ st~
The tailwater elevauo;;soased on a 25-year rrequency ill the outfall channel shill oe usea-for]
calculations of the hydraulic gradient.
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5.3 USE OF PREVIOUSLY DESIGNED AND IN'STALLED rnFRASTRUCTURE
(Situations where previously installed infrastructure is in place but not yet utilized to its deSign)
capacity will be considered on a case by case basis. The developers engineer shall after
consultation with the City, prepare a report that:
a. outline the original design criteria
b. evaluates the impact of the original design on the receiving stream, adjoining
properties and/or the 100 year Floodplain.
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Based on the report, the City Engineer may allow full or partial use 'of the previously installed
infrastructure and may require it to be supplemented with detention or other facilities.
5.4 STORM FREQUENCY, RUNOFF .AND DATUM
A Storm Frequency
All drainage improvements shall be designed for the following storm frequencies.
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Type of Facility
R()a~ Side Ditches and Culverts .//'
StomfSewers ~/
Ditches & Culverts Drainage 100 es and more
Bridges /
Creeks //
//
Detention FacilitieS
3 year
3 year
25 year
100 year
100 year
Refer to Section 5.5
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B.---Stoml-R~ff"~ --
Design flow of storm water runoff is to be calculated using the Rational Method.
The Rational Method is based on the direct relationship between rainfall and runoff, and
the method is expressed by the following equation:
Stormwater Criteria Page 2 of 10
March 23, 2009
My name is Margaret Compton and I live at 10901 Dogwood
LaPorte Texas in Fairmont Park East and I have lived there for
the last twenty two years, and in that time I have grown more
and more concerned about our flooding issues. These issues
have been voiced numerous times in meetings just like this one
for the last eighteen months. The reason for my voicing is that I
do not see a resolution. A temporary solution would be to allow
individual home owners to enlarge the size of their driveways.
People throughout the city of LaPorte have lost their vehicles
due to flooding in the streets. Yes it is true that these home
owners have garages but most of them have multiple cars that
cannot be housed indoors. Also there will be less pollution
meaning that there won't be oil and other toxic fluids leaking
out of these flooded cars in to our eco-system lowering our true
property value even more than the flooding has already done.
The next issue I would like to address would be the square
grated storm drain on Pecan Circle. On the average there is a
drain every 1000ft. this is why it is important for this drain to
work properly, just like the new drain on Linwood.
The Fairmont Parkway ditch needs to be re-grated between
Cottonwood and the pipeline to help alleviate the flooding
concerns for Fairmont Park East. If anyone in Fairmont Park
East has any suggestion or ideas on how to resolve the flooding
concerns, the city would love to hear your ideas. Thank you all
for your time and have a blessed evening.