HomeMy WebLinkAbout07-29-09 Drainage and Flooding Committee minutes
2
MINUTES OF THE DRAINAGE AND FLOODING COMMITTEE
JULY 29, 2009
1. Call to Order.
The meeting was called to order by Chairman Mike Mosteit at 5:07 p.m.
Committee Members Present: Chairman Mike Mosteit, Vice Chairman Mike Clausen, Chuck
Engelken and Louis Rigby
Alternate Members Present: Daryl Leonard
Committee Members Absent: None
Other Council members Present: None
Members of City Employees Present: Assistant City Attorney Clark Askins, City Secretary Martha
Gillett, City Manager Ron Bottoms, Assistant City Manager John Joerns, Assistant City Secretary
Sharon Harris, Public Works Director Steve Gillett, City Engineer Rodney Slaton, Drainage
Foreman Rodney Cox and Administrative Secretary Robin Eldridge.
Others present: Margaret Compton, Roxanne Mouton, Charles Nute, Jim Blackburn, Mr.
Rothmund, E.E. Heerton, Jack Peters, Barry Armstrong, Dan Pilkington, Roxann Benthal, Cheryl
Westmoreland, William Busch, Joseph Chucalate, Richard Smith, Richard Winn, Melissa
Rothmund, Chaz Rothmund, Laurel Davis, Susan Jenson, Joe Rodriguez, Joseph Russell, Daryl
Vaughn, Ian Horne, Adam Yanelli of Bayshore Sun, Manly Boudreaux and Gary Struzick of Klotz
and Associates.
2. Consider approval of Minutes of Drainage and Flooding Committee Meeting held on June 24,
2009.
Motion was made by Committee member Clausen to approve the minutes as presented. Second
by Committee Member Engelken. The motion carried.
Ayes: Mike Mosteit, Mike Clausen, Louis Rigby and Chuck Engelken.
Nays: None
Abstain: None
Absent: None
3. Petitions, Remonstrance's, communications, and citizens and taxpayers wishing to address the
Drainage and Flooding Committee.
Roxanne Mouton - 105 Valleybrook - addressed the committee and requested to know what
project was forthcoming in the Glenmeadows Subdivision.
Margaret Compton - 10901 Dogwood - addressed committee regarding flooding concerns.
Provided a handout of her presentation (Exhibit A) attached.
4. Receive report from Klotz and Associates on Fairmont Park East and Brookglen Drainage Study.
Gary Struzick of Klotz and Associates provided the committee with an update of the reports
regarding the possible Channel Diversion for the Brookglen Subdivision. The cost options were
discussed in detail. Option 2 was recommended to be implemented in two phases.
The Drainage Study for Fairmont Park East was also reviewed by Mr. Struzick. The Consultant's
initial recommendation was to implement Alternative 3. Subsequent information now indicates a
recommendation incorporating elements of Alternative 3 and 4. Mr. Struzick will complete his
analysis and bring back a revised recommendation and cost estimate at the next Drainage and
Flooding Committee meeting.
A citizen offered Mr. Struzick some additional information and photos on Idlewood Street flooding.
5. Discuss Budgeted Cost of City Wide Drainage - R. Bottoms
City Manager Ron Bottoms provided the committee with an overview of the costs of the
projects and noted they will be discussed in the upcoming budget process.
Mr. Bottoms noted some of the funds will come from CBGD grants, issuance of certificate
of obligation and fund balance.
He noted that if issuances of certificates of obligation are too excessive it could result in a
tax rate increase.
The committee questioned staff as to whether or not the County and FEMA may help in
some of the costs.
6. Receive update on Brookglen Subdivision Future Buyouts - John Randolph with Harris
County Flood Control District
Mr. Randolph reported 18 homes have been purchased and two more are in the process
of being purchased. In addition, twenty six more homes may be purchased.
Mr. Randolph advised all people who are being considered for buyout have been notified
by the community outreach division of the County.
7. Administrative Reports
Receive reports from City Staff, Harris County Flood Control District and Harris County
Precinct Two regarding city drainage issues.
Director of Public Works Steve Gillett informed the committee Public Works is in the
process of finishing projects on the south side of town. When those are completed they
will be moving on to the other planned projects.
Mr. Randolph provided the committee an overview of the flood control projects.
Precinct 2 representative is out of town and was not available to attend this meeting.
8. Set date for next meeting
The Drainage and Flooding Committee set the next meeting date for August 19, at 6:00
p.m. in the Council Chambers.
9. Committee Comments
A. Matters appearing on agenda
B. Inquiry of staff requiring a statement of specific factual information or a recitation of
existing policy.
Committee members Mosteit and Leonard brought items to the table.
10. Executive Session - pursuant to provision of the Open Meetings Law. Chapter 551 Texas
Government Code, Sections 551-071 through 551.076, 551.087 (consultation with attorney,
deliberation regarding real property, deliberation regarding prospective gift or donation, personnel
matters, deliberation regarding security devices, or excluding a witness during examination of another
witness in an investigation, deliberation regarding Economic Development Negotiations.)
551.071 (Pending or contemplated litigation)
Meet with City Manager and City
Attorney to discuss
contemplated litigation against
City regarding drainage issue
Committee retired to Executive Session at 6:50 p.m.
Committee returned to the table at 7:10 p.m.
Committee reconvened the Regular Meeting at 7:11 p.m.
11. Considerations and possible action on items in executive session.
12. Adjournment
There being no further business to come before the Committee, the meeting was adjourned
at 7:12 p.m.
Respectfully submitted,
YJLtv1t?L~7r(-'JJ: f1
Martha Gillett, TRMC, CMC
City Secretary
Approved this I q~ay of AugtJrA- 2009.
Chairperson Mike Mosteit -....
~^~
Mr. Ron Bottoms, City Manager
October 1,2008
Page 2 of31
k lot z .~. ass 0 cia t e 5
The City currently requires that construction of new roadside ditches and storm
sewer facilities convey the 3-year storm. For drainage areas greater than 100
acres, ditches and culverts are sized for the 25-year event. Bridges and major
drainage conveyances, (e.g., channels and creeks) are required to provide
conveyance for the 100-year event. However, it is noted that si 'ficant portions
of the City were developed prior to the a option 0 e drainage criteri~
The City's current criteria also specify that all drainage design should be
performed using the Rational Method. The time of concentration and rainfall
intensity are determined using the City's data and National Weather Service
Technical Paper 40 and Hydro-35 data. These design guidelines cover the City's
minimum needs for storm water drainage that is to be designed to prevent
flooding of structures during smaller storms.
In addition to having storm drainage requirements, La Porte also addresses the
need to control the dO\NTIstream effects of any changes to the drainage pattern in
an area through the use of storm water detention ponds. In general, the City's
guidelines call for detention ponds on all systems which outfall into Harris
County Flood Control District (HCFCD) channels F212, F216, B106, BI09, B112
and Al 04. Storage volumes for these facilities are determined using one of two
methods depending upon drainage area size: predetermined storage factors or
HCFCD criteria. For smaller drainage areas, the City's drainage criteria specify
that 0.20 ac-ftJac and 0.45 ac-ftJac of detention storage be provided for drainage
areas from 0 to 3 acres and from 3 to 10 ages, respectively .!?etention for ~
area greater than 10 acres but less than WtJa'Cres is to be designed usrng HCFCD
~criteria. Larger areas requiredspeciflc reVIew by the City cngrneer. Outfall pipes
are designed using an orifice equation with the minimum restrictor size being six
inches.
La Porte's design guidelines also list specific limitations on the location of storm
water drainage structures in order to assure that the storm water is cleared from
the surface efficiently for street systems with curb and gutters. For curb and
gutter systems, the guidelines call for a maximum storm water travel distance of
300 feet along major thoroughfares and in commercial districts and 400 feet in
single family residential areas. It is to be recognized that irIlet spacing and
capacity must be designed in conjunction with sufficient storm sewer capacity for
the sewer to which the irIlet drains; if the sewer capacity is insufficient, then
proper drainage will not occur, irrespective of the irIlet capacity and spacing.
The City's design manual also requires that a storm sewer be designed to satisfy
specific limits for the design storm. The maximum depth of flow cannot exceed
the smaller of the top of curb or road crown. For collector streets, maximum
storm water depths must be such as to allow one clear lane of traffic (i.e., a 12
foot wide zone), while the clear zone must be at least 24 feet wide on arterial
11r. Ron Bottoms, City Manager
October 1,2008
Page 3 of 31
k lot z .~. ass 0 cia t e 5
streets. Along with these requirements, the manual indicates that an overland flow
path to the storm sewer system's outfall must be provided for the lOa-year event.
To provide protection of habitable structures, grading and drainage around a
habitable structure must provide a finished floor slab which is at least 1) 12 inches
above the top of curb at its highest point along the of the curb fronting the
building site; 2) 18 inches above the crown of the road elevation along the road
fronting the building site; and 3) 12 inches above the ground elevation along all
sides of the building site. Provision is provided for alternative methods of
protection with approval of the City Engineer.
2.2 Comparison with Adjacent Communities
A review of the design criteria for the City of La Porte and surrounding areas,
including Harris County, Pearland, Galveston County, Chambers County, and
Brazoria County, found a mixture of municipal storm water or storm sewer
design criteria. Both the City of Houston and the City of La Porte have
standardized storm sewer design requirements. The nearby cities of Deer Park
and Bayiown do not have specific standards that are to be used by the public or
engineering consultants for storm water design. Other cities in the region, such as
Sugar Land, Pearland, Friendswood, and Missouri City, have storm sewer design
requirements. Some cities, such as Mont Belvieu, utilize county standards as
surrogates for city-adopted standards. HCFCD has design guidelines available on
its website.
2.3 Flood Hazard Requirements
Chapter 94 of the City's Code of Ordinances addresses flood hazard and potential
construction in special flood hazard areas. Standards applicable to new
construction or substantial improvements in special flood hazard zones require a
variety of measures for sound construction of structures and installation of
utilities to eliminate or reduce damages from floods. These standards also include
the following requirements:
· Lowest floor elevation of new residential structures must be I-foot above the
base flood (lOa-year) elevation
· Lowest floor elevation of new non-residential structures must be at or above
the base flood elevation (or equivalent structure protection must be provided)
Special requirements also apply for manufactured homes to prevent floatation,
collapse, or lateral movement.
These above requirements for construction in. special flood hazard areas are
consistent with many communities in the Houston metropolitan area.
tih; b:-f A
Margaret Compton
10901 Dogwood
LaPorte, Texas 77571
July 20, 2009
Hello, my name is Margaret Compton and I live at 10901
Dogwood in Fairmont East.
I am here on behalf of the residents of Fairmont Park East and the
flooding problem we encounter each time it rains.
Quoting the Klotz package, October 1, 2008, page 2 of 31 states:
"the City was developed prior to the adoption of the drainage
criteria in 1987".
We moved into Fairmont Park East in 1987. The road Fleetwood
ended just past Linwood. In approximately 1991, the roads and
drainage for spruce North and South were installed.. Several years
later, Sycamore North and South were added and Fleetwood was
completed to intersect Spencer Highway. Within this time span the
drainage criteria was not enforced.
Another quote taken from the Klotz package on the same page,
"Detention for an area greater than ten acres but less than eae-
50
.hundred- acres is to be designed using the Harris County Flood
Control District. Larger areas require specific review by city
engineer" .
A portion of F airmont Park East shown in Exhibit 2 of the Klotz
package, measuring from the parallel pipelines that run through the
East and West end of the neighborhood, with Mesquite and
F airwood finishing the square. This area equals to approximately
209 acres. In area A, which is approximately half of this section,
there is a 60" outfall pipe for Fleetwood servicing this portion of
acreage. On the adjacent side of the exhibit A, there is a 48"
outfall pipe on Driftwood servicing this area which is roughly 100
acres. Needless to say, this is not enough to drain the area and the
48" pipe on Driftwood is unable to catch the excess watershed. In
addition, there are no drains on Driftwood except for at Spencer
and B 10602/Mesquite. This makes the 24" pipes on our roads that
lead to the 60" outfall pipe catch all of the excess runoff from
Driftwood.
Another quote from the Klotz package, "Along with these
requirements, the manual indicates that an overland flow path to
the storm sewer system's outfall must be provided for the 100-year
event."
Understanding Driftwood will not be brought up to code and all
progress for upgrades have been painfully slow, I am requesting
for "Alternative 4" to be chosen. I respectfully come before you
and hope that all will seriously consider "Alternative 4". Thank
you all for your time and have a lovely night.
k lot z .~. ass 0 cia t e 5
FAIRMONT PARK EAST
DRAINAGE AREA &
STORM SEWER MAP
NAVD88 2001 Adj. Aerial Source: HGAC 2008
Area (ac) C Q (3- YR) Q (5-YR)
A 106.6 0.55 188.9 cfs 223.1 cfs
B 19.9 0.55 52.8 cfs 60.8 cfs
C 19.1 0.55 50.8 cfs 58.5 cfs
0 16.9 0.55 45.1 cfs 51.9 cfs
CITY OF LA PORTE
FAIRMONT PARK EAST &
BROOKGLEN DRAINAGE STUDY
KLOTZ PRQJ. NO.: 0127.009.000
2
4
August 17, 2009
Mr. Ron Bottoms
City Manager
City of La Porte
604 W. Fairmont Parkway
La Porte, Texas 77571
RE: City of La Porte, Texas
Fairmont Park East and Brookglen Drainage Study - t\44endum
Klotz Associates Project No. 0127.009.000
Dear Mr. Bottoms:
This letter addendum supplements our report entitled "Fairmont Park Easl'~ Brookglen
Drainage Study", City of La Porte ("City"), aiid date.d..... eMay 2009. TIiis addendum
./ "",., ,
summarizes Alternatives 3 & 4 and evaluates Altetqatj.ve 5 for the Fairmont Park East
subdivision.
Existing Conditions within Fairmont Park East Subdivisio!l'
The Fairmont Park East subdivision wasconstrU~~d,,)V~,th an ~nusual storm sewer design.
The subdivision has the main storm sew,~r,pipe sys€lI!;,constructed under Fleetwood
Drive. The side street~",on:of'!'1e,etwood Dri~e contain if11ets that are anywhere from 1 to
1.9 feet lower in el~y~tion than'tpe intersecting street elevations along Fleetwood Drive.
The existing stomr se,};Ytrr inlets,0"and drainage"'system have a 3-year storm capacity and
will begin to fill up the"side streetsiduring stoqnevents less than the 3-year storm event.
The side str.e. et.,!iwill, continue, to ponllahd th... e depth of water in the side streets will reach
1 foot to"alinOs(2'1~.~ geep'b~fqre water backs up onto Fleetwood Drive. If the storm
event ~phtinues water c4P packujJ,PIlFJeetwood Drive and will continue to back up in the
side streets. The new surVey data obtained by the City of La Porte shows that not only is
Fleetwood"Drive higher tfiall the elevations of the side streets Fleetwood also has a high
point in the ro~dway betw~en Mulberry Drive and this high point continues north to
South Spruce. Tl\~ highe~r point along Fleetwood is between Idlewood and Dogwood.
This high point creates, a limitation in the ability for Fleetwood Drive to convey flows out
of the subdivision and south to the receiving ditch. See the profile as shown on Exhibit 1.
Previous Study Alternative 3
In the referenced May 2009 original drainage report, Klotz Associates recommended
Alternative 3 which proposed to add a parallel storm trunk line under the northbound
pavement and adjacent to the existing storm trunk line. The combination of existing
storm sewer and proposed parallel trunk line would provide for a 5-year storm event with
a capacity of approximately 225 cfs. The two storm sewer lines are to be connected to
Mr. Ron Bottoms
August 14, 2009
Page 2 of 3
equalize the flow in each pipe. Alternative 3 was the least expensive alternative with a
construction estimate of approximately $1.37M.
Previous Study Alternative 4
Alternative 4 included lowering Fleetwood Drive approximately 1.7 feet from Mesquite
Drive north to Linwood, transitions to the side street and constructing a new 5 year storm
sewer system under Fleetwood. Portions of the existing storm sewer system would be in
conflict with the proposed lowered Fleetwood so a new 5 year storm sewer system was
proposed. The construction cost was estimated at $2.2M for Alternative 4.
Residents of Fairmont Park East Subdivision have made 'comments in support of
Alternative 4 over Alternative 3 during some of the Drainage Conilnittee meetings.
New detail survey data along Fleetwood ,.
The City of La Porte used staff resources to develop a detailed survey alol1gfleetwood.
The survey obtained more detail elevations andupdated.'information along Fleetwood
from Mesquite north to almost Spencer Highway. Tq~ ~urvey obtained detail elevations
along the roadway as well as elevati~rs of the storm sewer inlets along the side streets.
This new survey data allowed us to reev;allJate Fleetwoodinmore detail rather than using
only older reference drawings. As a resulfof the new survey a new Alternative 5 was
developed.
Alternative 5
Alternative 5 include~ iowenngpart of Fleetwood Road from Mulberry Drive north to
South Spruce and constglcting qnew 5year storm sewer system. This alternative is shown
on the attached exhibitS and thetonstruction cost is estimated at $1.66M. The benefit of
this Alterna~veis to provide 'for better'sheet flow out of the subdivision during storm
events higher "than'jh;~ 5 ye?TTI' event but only includes the complete rebuilding of
FleetwQpd for abour.J,400 feet" Alternative 5 includes about 1,000 feet less of
impfbv'ements to Fleetwood compared to Alternative 4. This Alternative 5 is more
expensivetlian Alternative'} but also provides for more flow capacity during large storm
events by low~ri,rg the res1:fiction of flow along Fleetwood and allowing the large storm
event flows to couti,pue to flow south towards the ditch.
Overflow swale or storm sewer outfall pipe
As part of all of the alternatives evaluated an overflow swale or storm sewer outfall pipe
is proposed to be constructed from Fleetwood Drive to the receiving ditch to compliment
the capacity of the proposed Alternative. The overflow swale or storm sewer outfall pipe
are critical elements to improve the drainage for Fairmont Park East and need to be
constructed as a minimum even if changes or improvements to Fleetwood are delayed.
Mr. Ron Bottoms
August 14, 2009
Page 3 of 3
Side Streets
Each of the alternatives discussed above and those outlined in the original May 2009
study evaluate alternatives that will increase the conveyance out of the Fairmont Park
East subdivision and toward the receiving ditch. But because the side streets are
significantly lower than the elevations of Fleetwood Drive there will still be ponding in
the side streets with each alternative discussed above. The ponding will vary depending
on the selected alternative. With lowering Fleetwood Drive there will be ponding and
conveyance along Fleetwood more that before. The goal is to have Fleetwood serve as a
storage area and a storm sewer conveyance area to send flow~out to the receiving ditch
and to reduce the ponding within the subdivision and to reduce)he flooding of structures.
It is important to note that no alternative eliminates ,~(o('tJ:le ponding within the
subdivision but all of the alternatives will reduce the, pondihg'and also reduce the
structural flooding.
We recommend that Alternative 5 be the proi.~cts~lected bv the City for improvements in
the Fairmont Park East subdivision as it provides' fgr a ? . year storm sewer system and
better sheet flow from the upper portions of the subdiyi~J()n.
We are available to discuss this report~jJh you at your convenience. Summary data has
been included in the exhibits and appendices.
Sincerely,
Brian Addicks, P.R
bda
Attachments
CC: Mr. Ron Bottoms, City of La Porte
1\1r' Steve Gillett, City of La Porte
Mr,John JQerns, City of La Porte
Mr. Rodney Slaton, City of La Porte
k lot z 4~~ ass 0 cia t e s
Table 1
Cost Summary
May 2009 vs. August 2009
Original May 2009 Report August 2009 Addendum
Alt. I $1.2IM Alt. I $1.27M
Alt. 2A $1.52M Alt. 2A $1.53M
Alt. 2B $2.13M Alt. 2B $1.7IM
Alt. 3 $1.35M Alt. 3 $1.37M
Alt. 4 $2.2IM Alt. 4 $2.2IM
Alt. 5 $1.63M
Table 2
Alternative-1
Add a Parallel Storm Trunk under the Northbound Pavement of Fleetwood Drive
From HCFCD Unit 8106-02-00 (Outfall) to Sycamore Dr. North (2,950 LF)
Remove and Replace Northbound Pavement
Table 1
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% of Total) LS 1 $ 46,500 $ 46,500
2 Remove & Dispose of Existing Pavement on One SY 4,425 $ 3.10 $ 13,720
Side
3 Remove & Dispose of Existing 60" CMP LF 155 $ 16.00 $ 2,480
4 Excavation CY 3,824 $ 4.60 $ 17,600
5 7" Reinforced Concrete Pavement (Include SY 4,425 $ 40 $ 177,000
Subgrade)
6 Inlets Types A, B, C EA 22 $ 2,700 $ 59,400
7 24" Reinforced Concrete Pipe LF 330 $ 50 $ 16,500
8 36" Reinforced Concrete Pipe LF 541 $ 75 $ 40,580
9 48" Reinforced Concrete Pipe LF 236 $ 110 $ 25,960
10 54" Reinforced Concrete Pipe LF 310 $ 140 $ 43,400
11 60" Reinforced Concrete Pipe LF 556 $ 165 $ 91,740
12 5' x 5' Reinforced Concrete Box LF 291 $ 190 $ 55,290
13 6' x 5' Reinforced Concrete Box LF 823 $ 200 $ 164,600
14 8' x 6' Reinforced Concrete Box LF 205 $ 350 $ 71,750
15 60" Equalizer Pipe Between Both Stonm Trunks LF 120 $ 165 $ 19,800
16 Junction Box EA 1 $ 10,000 $ 10,000
17 Manholes EA 10 $ 3,000 $ 30,000
18 Wingwall with Headwall EA 1 $ 25,000 $ 25,000
19 5" Concrete Riprap SY 75 $ 42 $ 3,150
20 Cement Stabilized Sand Ton 879 $ 100 $ 87,900
21 Adjust & Grout Manholes EA 10 $ 1,000 $ 10,000
22 SWppp LS 1 $ 20,000 $ 20,000
Trunk Line & Pavement - Subtotal Construction: $ 1,032,370
10% Contingency $ 103,237
Trunk Line & Pavement - Total Construction: $ 1,135,607
Total Construction & Enaineerina (12%1: $ 1,271,880
Klotz Associates Project No. 0127.009.000
August 2009
Fairmont Park East and Brookglen Drainage Study
City of La Porte
Table 3
Alternative-2A
Remove Existing Storm Trunk Line Adjacent to the Northbound Pavement of Fleetwood Drive from
HCFCD Unit 8106-02-00 (Outfall) to Sycamore Dr. North and Install New Storm Trunk Designed for a 5.
year Event Minimize Pavement Replacement & Utility Conflicts
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% of Total) LS 1 $ 55,800.00 $ 55,800.00
2 Remove & Dispose of Existing Pavement SY 293 $ 3.10 $ 910.00
3 Remove & Dispose of Existing Storm Pipe LF 3,000 $ 16.00 $ 48,000.00
4 Excavation CY 3,889 $ 4.60 $ 17,890.00
5 7" Reinforced Concrete Pavement Repair SY 293 $ 40.00 $ 11,740.00
(Include Subgrade)
6 Curb Ramps EA 21 $ 3,300.00 $ 69,300.00
7 Inlets Types A, B, C EA 22 $ 2,700 $ 59,400.00
8 24" Reinforced Concrete Pipe LF 330 $ 50 $ 16,500.00
9 48" Reinforced Concrete Pipe LF 236 $ 110.00 $ 25,960.00
10 60" Reinforced Concrete Pipe LF 540 $ 165.00 $ 89,100.00
11 6' x 5' Reinforced Concrete Box LF 310 $ 200.00 $ 62,000.00
12 7' x 5' Reinforced Concrete Box LF 849 $ 260.00 $ 220,740.00
13 8' x 6' Reinforced Concrete Box LF 1,015 $ 350.00 $ 355,250.00
14 Manholes Include Tie in Exist. Pipe EA 11 $ 3,000.00 $ 33,000.00
15 Wingwall with Headwall EA 1 $ 25,000.00 $ 25,000.00
16 5" Concrete Riprap SY 75 $ 42.00 $ 3,150.00
17 Cement Stabilized Sand Ton 1,300 $ 100.00 $ 129,990.00
18 SWPPP LS 1 $ 20,000.00 $ 20,000.00
Trunk Line & Pavement Repair - Subtotal Construction: $ 1,243,730.00
10% Contingency $ 124,373.00
Trunk Line & Pavement Repair - Total Construction: $ 1,368,103.00
Total Construction & EnClineerinCl (12%): $ 1,532,275.36
Klotz Associates Project No. 0127.009.000
August 2009
Fairmon! Park East and Brookglen Drainage Study
City of La Porte
Table 4
Alternative-28
Remove Existing Storm Trunk Line Adjacent to the Northbound Pavement of Fleetwood Drive from
HCFCD Unit 8106-02-00 (Outfall) to Sycamore Dr. North and Install New Storm Trunk Designed for a
10-year Event Minimize Pavement Replacement & Utility Conflicts
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% of Total) LS 1 $ 62,400.00 $ 62,400.00
2 Remove & Dispose of Existing Pavement SY 293 $ 3.10 $ 910.00
3 Remove & Dispose of Existing Storm Pipe LF 3,000 $ 16.00 $ 48,000.00
4 Excavation CY 3,889 $ 4.60 $ 17,890.00
5 7" Reinforced Concrete Pavement Repair SY 293 $ 40.00 $ 11,740.00
(Include Subgrade)
6 Curb Ramps EA 21 $ 3,300.00 $ 69,300.00
7 Inlets Types A, B, C EA 22 $ 2,700 $ 59,400.00
8 24" Reinforced Concrete Pipe LF 330 $ 50 $ 16,500.00
9 60" Reinforced Concrete Pipe LF 236 $ 165.00 $ 38,940.00
10 5' x 5' Reinforced Concrete Box LF 540 $ 190.00 $ 102,600.00
11 7' x 5' Reinforced Concrete Box LF 310 $ 230.00 $ 71,300.00
12 8' x 6' Reinforced Concrete Box LF 1,138 $ 350.00 $ 398,300.00
13 9' x 6' Reinforced Concrete Box LF 724 $ 370.00 $ 267,880.00
14 Manholes Include Tie in Exist. Pipe EA 11 $ 3,000.00 $ 33,000.00
15 Wingwall with Headwall EA 1 $ 25,000.00 $ 25,000.00
16 5" Concrete Riprap SY 75 $ 42.00 $ 3,150.00
17 Cement Stabilized Sand Ton 1,417 $ 100.00 $ 141,750.00
18 SWPPP LS 1 $ 20,000.00 $ 20,000.00
Trunk Line & Pavement Repair - Subtotal Construction: $ 1,388,060.00
10% Contingency $ 138,806.00
Trunk Line & Pavement Repair - Total Construction: $ 1,526,866.00
Total Construction & EnQineerinQ (12%): $ 1,710,089.92
Klotz Associates Project No. 0127.009.000
August 2009
Fairmont Park East and Brookglen Drainage Study
City of La Porte
Table 5
Alternative-3
Add a Parallel Storm Trunk under the Northbound Pavement of Fleetwood Drive
From HCFCD Unit 8106-02-00 (Outfall) to Spruce Dr. North
Remove and Replace Northbound Pavement (2,200 LF)
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% ofTotal) LS 1 $ 50,000.00 $ 50,000.00
2 Remove & Dispose of Existing Pavement SY 3,300 $ 3.10 $ 10,230.00
3 Remove & Dispose of Existing Storm Pipe LF 155 $ 16.00 $ 2,480.00
4 Excavation CY 2,981 $ 4.60 $ 13,720.00
5 7" Reinforced Concrete Pavement (Include SY 3,300 $ 40.00 $ 132,000.00
Subgrade)
6 Inlets Types A, B, C EA 28 $ 2,700 $ 75,600.00
7 24" Reinforced Concrete Pipe LF 880 $ 50 $ 44,000.00
8 5' x 5' Reinforced Concrete Box LF 548 $ 190.00 $ 104,120.00
9 6' x 5' Reinforced Concrete Box LF 556 $ 200.00 $ 111,200.00
10 7' x 5' Reinforced Concrete Box LF 581 $ 230.00 $ 133,630.00
11 7' x 6' Reinforced Concrete Box LF 521 $ 260.00 $ 135,460.00
12 8' x 6' Reinforced Concrete Box LF 217 $ 350.00 $ 75,950.00
13 60" Equalizer Pipe Between Both Storm Trunks LF 120 $ 165.00 $ 19,800.00
14 Junction Box EA 1 $ 10,000.00 $ 10,000.00
15 Manholes EA 7 $ 3,000.00 $ 20,540.00
16 Wingwall with Headwall EA 1 $ 25,000.00 $ 25,000.00
17 5" Concrete Riprap SY 75 $ 42.00 $ 3,150.00
18 Cement Stabilized Sand Ton 1,104 $ 100.00 $ 110,450.00
19 Adjust & Grout Manholes EA 7 $ 1,000.00 $ 6,850.00
20 SWPPP LS 1 $ 20,000.00 $ 20,000.00
Trunk Line & Roadway. Subtotal Construction: $ 1,104,180.00
10% Contingency $ 110,418.00
Trunk Line & Roadwav - Total Construction: $ 1,214,598.00
Total Construction & EnQineerinQ (12%): $ 1,360,349.76
Klotz Associates Project No. 0127.009.000
August 2009
Fairmont Park East and Brookglen Drainage Study
City of La Porte
Table 6
Alternative-4
Removal and Replace Roadway with Lower Profile Grade Line for Fleetwood Drive
Replace Existing Storm Trunk Adjacent to Pavement
From HCFCD Unit 8106-02-00 (Outfall) to Sycamore Dr. South (2,400 LF)
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% of Total) LS 1 $ 82,300.00 $ 82,300.00
2 Remove & Dispose of Existing Pavement SY 12,000 $ 3.10 $ 37,200.00
Full Width, Intersections & Crossing Streets
3 Remove & Dispose of Existing Storm Pipe LF 2,715 $ 16.00 $ 43,440.00
4 Roadway Excavation CY 4,703 $ 4.60 $ 21,640.00
5 Storm Excavation CY 1 ,496 $ 6.00 $ 8,980.00
6 7" Reinforced Concrete Pavement SY 12,000 $ 40.00 $ 480,000.00
(Include Subgrade)
7 Curb Ramps EA 30 $ 3,300.00 $ 99,000.00
8 Inlets Types A, B, C EA 28 $ 2,700 $ 75,600.00
9 24" Reinforced Concrete Pipe for Additional Curb LF 770 $ 50 $ 38,500.00
Return Inlets
10 54" Reinforced Concrete Pipe LF 305 $ 140.00 $ 42,700.00
11 60" Reinforced Concrete Pipe LF 238 $ 165.00 $ 39,270.00
12 6' x 5' Reinforced Concrete Box LF 588 $ 200.00 $ 117,600.00
13 8' x 5' Reinforced Concrete Box LF 570 $ 270.00 $ 153,900.00
14 8' x 6' Reinforced Concrete Box LF 1,015 $ 350.00 $ 355,250.00
15 Manholes EA 6 $ 3,000.00 $ 19,300.00
16 Wingwall with Headwall EA 1 $ 25,000.00 $ 25,000.00
17 5" Concrete Riprap SY 75 $ 42.00 $ 3,150.00
18 Cement Stabilized Sand Ton 1,344 $ 100.00 $ 134,420.00
19 SWPPP LS 1 $ 20,000.00 $ 20,000.00
Trunk Line & Roadway - Subtotal Construction: $ 1,797,250.00
10% Contingency $ 179,725.00
Trunk Line & Roadwav - Total Construction: $ 1,976,975.00
Total Construction & Enaineerina (12%): $ 2,214,212.00
Klotz Associates Project No. 0127.009.000
August 2009
Fairmont Park East and Brookglen Drainage Study
City of La Porte
Table 7
Alternative-5
Removal and Replace Roadway with Lower Profile Grade Line for Fleetwood Drive
From S. Spruce to Mulberry Drive & Storm Sewer Replacement from S. Spruce
and HCFCD 8106-02-00
Item Item Description Unit Estimated Unit Price Total Cost
No. Quantity
1 Mobilize & Prepare Right-of-Way (5% of Total) LS 1 $ 62,000.00 $ 62,000.00
2 Remove & Dispose of Existing Pavement SY 4,540 $ 3.10 $ 14,080.00
Full Width, Intersections & Crossing Streets
3 Remove & Dispose of Existing Storm Pipe LF 2,155 $ 16.00 $ 34,480.00
4 Roadway Excavation CY 1,286 $ 4.60 $ 5,920.00
5 Storm Excavation CY 1,347 $ 6.00 $ 8,090.00
6 7" Reinforced Concrete Pavement SY 4,540 $ 40.00 $ 181,600.00
(Include Subgrade)
7 Curb Ramps EA 20 $ 3,300.00 $ 66,000.00
8 Inlets Types A, B, C EA 30 $ 2,700 $ 81,000.00
9 24" Reinforced Concrete Pipe for Additional Curb LF 770 $ 50 $ 38,500.00
Return Inlets
54" Reinforced Concrete Pipe LF 305 $ 140.00 $ 42,700.00
60" Reinforced Concrete Pipe LF 238 $ 165.00 $ 39,270.00
6' x 5' Reinforced Concrete Box LF 588 $ 200.00 $ 117,600.00
8' x 5' Reinforced Concrete Box LF 570 $ 270.00 $ 153,900.00
8' x 6' Reinforced Concrete Box LF 1,015 $ 350.00 $ 355,250.00
10 Manholes EA 6 $ 3,000.00 $ 19,300.00
11 Wingwall with Headwall EA 1 $ 25,000.00 $ 25,000.00
12 5" Concrete Riprap SY 75 $ 42.00 $ 1,575.00
13 Cement Stabilized Sand Ton 1,344 $ 60.00 $ 80,660.00
14 SWPPP LS 1 $ 20,000.00 $ 20,000.00
Trunk Line & Roadway - Subtotal Construction: $ 1,346,925.00
10% Contingency $ 134,692.50
Trunk Line & Roadwav - Total Construction: $ 1,481,617.50
Total Construction & Enqineerinq (12%): $ 1,659,411.60
Klotz Associates Project No. 0127.009.000
August 2009
Fairmont Park East and Brookglen Drainage Study
City of La Porte
k lot z .~. ass 0 cia t e 5
FAIRMONT PARK EAST
ALTERNATIVE 5
NAVD88 2001 Adj. Aerial Source: HGAC 2008
CITY OF LA PORTE
FAIRMONT PARK EAST &
BROOKGLEN DRAINAGE STUDY
KLOTZ PROJ. NO.: 0127.009.000
SCALE: 1" = 600'
DATE: MAY 2009
2
Meeting Handout
August 16, 2009
Hello my name is Margaret Compton I reside a t 10901
Dogwood, located in Fairmont Park East.
Today I would like to focus on the distances between storm
drain locations verses the applied area measured, in the West
end of Fairmont Park East. The streets are color coded on the
adjacent map.
1.) __Sycamore N. to Sycamore S. = 1480.02 ft.
including the go-between on Fleet wood. On this road
the drains are 824.03 ft apart.
2.) I~ Spruce N. and Spruce S. = 1827.00 ft. including
the go-between on Fleetwood. On this road the drains
are 1050.11 ft. apart.
3.) hir-~1ll} Dogwood to Linwood = 2101.04 ft. including the
go-between on Fleetwood. On this road the drains are
1000.00 ft. apart.
4.) _Idelwood to Mulberry = 2102.06 ft. including the
go-between on Fleetwood. On this road the drains are
1168.00 ft. apart.
I would like the facts to speak for themselves. I would like to
also thank you all for taking time out of your busy schedules to
come and listen to these meetings. And to thank all of the
officials that appear at these meetings, you all help to make our
community better. Thank you.
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Margaret Compton
10901 Dogwood
LaPorte, Texas 77571
August 19, 2009
Hello, my name is Margaret Compton and I live at
10901 Dogwood in Fairmont East.
It has been found that Fairmont Park East Subdivision
is receiving additional water shed from the commercial
property located on the North side of the Subdivision.
The address is 11032 Spencer Highway. This
commercial property has a watershed coverage of 1.685
acres, which sheds to the most northern storm drain on
Driftwood.
Removing this source of additional water shed of 1.685
acres should alleviate some of the stress on the
Driftwood drainage system.
Also there are indications that surveys are being
prepared for additional commercial properties that also
should not shed their water to the Fairmont Park East
residential water shed. It is imperative that our city
leaders, controllers, and inspector make sure that these
commercial properties do not shed drainage on to the
Fairmont Park East Residential Subdivision watershed.
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CITY OF LA PORTE, HARRIS COUNTY, TEXAS.