HomeMy WebLinkAboutCity of Tamarac Resolution R-2009-059Temp. Reso. #11606
April 14, 2009 1
CITY OF TAMARAC, FLORIDA
RESOLUTION NO. R-2009-L/
A RESOLUTION OF THE CITY COMMISSION OF THE CITY
OF TAMARAC, FLORIDA, AUTHORIZING THE
APPROPRIATE CITY OFFICIALS TO EXECUTE TASK
AUTHORIZATION NO. 09-04E WITH ECKLER
ENGINEERING, INC., TO PROVIDE PROFESSIONAL
SERVICES FOR THE DESIGN OF A NEW CLEARWELL AT
THE WATER TREATMENT PLANT; INCLUDING
PREPARATION OF DETAILED PLANS AND
SPECIFICATIONS FOLLOWED BY PERMITTING AND
BIDDING ASSISTANCE, IN ACCORDANCE WITH THE
CITY'S CONSULTING ENGINEERING AGREEMENT AS
AUTHORIZED BY RESOLUTION NO. R-2006-131, FOR AN
AMOUNT NOT TO EXCEED $139,000.00; APPROVING
FUNDING FROM THE APPROPRIATE BUDGETED
UTILITIES OPERATIONAL ACCOUNTS; AUTHORIZING THE
APPROPRIATE CITY OFFICIALS TO ADMINISTER THE
CONTRACT; PROVIDING FOR CONFLICTS; PROVIDING
FORSEVERABILITY; AND PROVIDING FORAN EFFECTIVE
WHEREAS, the City of Tamarac owns, operates and maintains the water supply,
treatment, and distribution systems; and
WHEREAS, the City of Tamarac operates a 60,000 gallon clearwell which is an
integral part of the Water Treatment Plant; and
WHEREAS, the recently completed 2.0 MG Water Storage Tank and WTP
Improvement Project (Bid No. 04-17B) required the Contractor to provide cleaning and
structural integrity inspections of all finished water facilities within the City of Tamarac in
accordance with FAC 62-555.350; and
WHEREAS, Crom Engineering and Construction Services Inc., inspected the
60,000 gallon clearwell and found it to have severe structural deterioration and in danger of
Temp. Reso. #11606
April 14, 2009 2 '
structural failure ("Exhibit 1"); and
WHEREAS, Eckler Engineering Inc., was approved by City Commission under Task
Authorization Number 06-05E to provide professional services for design, permitting, and
construction management for the Structural Repair of the existing WTP Clearwell for an
amount not to exceed $39,300.00. As part of the preliminary engineering design, Eckler
Engineering, Inc., completed a detailed Inspection Report of the WTP clearwell on August
17, 2006 followed by a memo on September 26, 2006 which detailed three (3) options to
complete Structural Repairs of the existing WTP Clearwell and a fourth option to construct
a new clearwell ("Exhibit 2"); and
WHEREAS, the City Utilities Department reviewed the four (4) Clearwell options with
Eckler Engineering on October 10, 2006 and came to the conclusion that capital dollars
would be best spent constructing a new clearwell (Option 4) designed with the capacity to '
meet both existing and proposed Florida Department of Environmental Regulations. The
Structural Repair of the WTP Clearwell Project was cancelled by the City of Tamarac
Utilities Engineering Division on October 11, 2006 ("Exhibit 3" ); and
WHEREAS, the City requires the service of a consulting firm knowledgeable in this
area and capable of providing professional services for the design, permitting and bidding
assistance of the Water Treatment Plant Clearwell Project; and
WHEREAS, Eckler Engineering, Inc., possesses the required knowledge and
experience to provide the professional engineering services associated with the Water
Treatment Plant Clearwell Project; and
WHEREAS, Eckler Engineering, Inc., has been pre -qualified as an approved
consultant for engineering services by the City of Tamarac as authorized by Resolution No. I
R-2006-131; and
Temp. Reso. #11606
April 14, 2009 3
WHEREAS, it is the recommendation of the Director and Assistant Director of
Utilities that Task Authorization No. 09-04E from Eckler Engineering, Inc., be approved,
executed and funded; and
WHEREAS, the City Commission of the City of Tamarac, Florida, deems it to be in
the best interest of the citizens and residents of the City of Tamarac to accept and execute
Task Authorization No. 09-04E ("Exhibit 4") with Eckler Engineering, Inc., to provide
engineering services for the design, permitting and bidding assistance of the Water
Treatment Plant Clearwell Project for an amount not to exceed $139,000.00 and to provide
funding from the appropriate Operational accounts.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COMMISSION OF
THE CITY OF TAMARAC, FLORIDA, THAT:
SECTION 1: The foregoing "WHEREAS' clauses are hereby ratified and
confirmed as being true and correct and are hereby made a specific part of this resolution.
All exhibits attached hereto are incorporated herein and made a specific part of this
resolution.
SECTION 2: The appropriate City Officials are hereby authorized to accept
and execute Task Authorization No. 09-04E with Eckler Engineering, Inc., to provide
engineering services for the design, permitting and bidding assistance of the Water
Treatment Plant Clearwell Project, in accordance with the City's Consulting Engineering
Agreement as authorized by Resolution No. R-2006-131 on July 12, 2006, for an amount
not to exceed $139,000.00; and
SECTION 3: The $139,000.00 is approved to be funded from the 2009
Operational accounts.
Temp. Reso. #11606
April 14, 2009 4 '
SECTION 4: The City Manager, or his designee, are hereby authorized to
make changes, issue change orders not to exceed $30,000.00 per Section 6-156 (b) of the
City Code, and close the contract award including, but not limited to making final payment
within the terms and conditions of the contract and within the contract price.
SECTION 5: All resolutions or parts of resolutions in conflict herewith are
hereby repealed to the extent of such conflict.
SECTION 6: If any clause, section, other part or application of this Resolution
is held by any court of competent jurisdiction to be unconstitutional or invalid, in part or
application, it shall not affect the validity of the remaining portions or applications of this
Resolution.
SECTION 7: This Resolution shall become effective immediately upon its
passage and adoption.
PASSED, ADOPTED AND APPROVED this/ 9 day of�`.
2009.
BETH FLANSBAUM -TALABISCO
ATTEST:
MAYOR
RECORD OF COMMISSION VOTE:
_J1,MARION SWENSON, CMC MAYOR FLANSBAUM-TALABISCO
CITY CLERK DIST 1: COMM BUSHNELL
DIST 2: VM ATKINS-GRAD
DIST 3: COMM GLASSER
DIST 4: COMM. DRESSLER Q-
I HEREBY CERTIFY that
I have approved this
RESOLUTION as to form.
SAMUEL S. GOREN '
) `CITY ATTORNEY
Tank Inspection Report
City of Tamarac
0.06-MG Ground Storage Tank
Tamarac, FL
January 20th,
"EXHIBIT 1"
TR 911606
Pr6tYCEP11UNIAKEN ONAKE CORRECTIONS
NOTED
J'iE.'InCTED OREVISEr.i1DRESUBMIT
OSUBIdIT SPECIFIED ITEM
{h in 1 -s only for g"wel conformance wtih the
V1;r r,0ne8pt 01 the project and Conetal comp!iar1ce
with ine information given in the e0111iart 5aLanents.I
Any aruon <hawn is subject to the requirements of [he
plans and spacifications. Contractor is responsible foi
dimemwo,4 which shall be, confirmed and correlated'
at the lob site, fabrication rrocm;s ob ,r,d
at constructimi, :eordination of his wuil, r.i b the t
all otnei "wades, ano the satisfactory perforrne,rci 0;
hie work
_
Crom Engineering & Construction Services, Inc.
Jeffery D. Malpass, P.E.
President
Irvin C. Rubin
Project Manager
IJREim ENGINEERING Ei GEINSTRNCTINN SERVICES, INC.
250 SW 3Gth Terrace o Gainesville, Florida 32G07 ^ 352-548-3345 ^ Fax 352-548-344G
TANK INSPECTION REPORT
1.0 Executive Summa
Crom Engineering and Construction Services, Inc (CECS) conducted an
inspection of the 60,000-gallon clearwell in Tamarac, Florida on January 20rh
2006. The goal of the inspection was to review the status of the tank and its
structural integrity, and to determine what measures, if any, are necessary to
bring the tank up to present codes and standards so that the longest useful life of
the tank can be realized in meeting the intent of Florida Administrative Code
Chapter 62-555.350. Irvin Rubin, CECS Project Manager, performed the
inspection with the assistance of Wendell Swilley from Underwater Services
International, Inc. His findings were reviewed by Jeffery D. Malpass, P.E. and
sealed.
The findings of the wet inspection revealed significant deterioration of the
clearwell top slab as well as several supporting beams (See Video and Field
Inspection Report for specific locations). Two beams in particular show cracking
throughout the length of the beam 4 to 5 inches from the bottom of the beam
indicating that the beam bottom reinforcing is corroding. This corrosion has
resulted in the concrete below the bottom reinforcing spalling from the rest of the
beam. The underside of the clearwell top slab has extensive spalling. The slab
has exposed reinforcement bars which have completely deteriorated and no
longer support the slab.
As a result of the findings, CECS recommends a comprehensive concrete
restoration of the clearwell's top slab and beams including the replacement of
reinforcing bars. The complete deterioration of the #7 reinforcing bars in the
clearwell top slab is of concern regarding the slab's structural integrity. CECS
recommends placing temporary shoring inside the clearwell until the necessary
repairs can be made to the structure.
2.0 Scope of Work
The purpose of the inspection is to investigate the structural integrity of the 0.06-
MG clearwell. The investigation included the interior and exterior walls of the
tank, the roof slab, floor, and tank accessories. The inspection was a visual
survey of the structure with no invasive procedures employed. The tank was
inspected in accordance with AWWA D110 and ACI 350 to evaluate the present
condition of the tank structure. The tank was cleaned prior to the interior
inspection.
The tank was physically examined for any visible problems such as leaks or
cracks, any location that was questionable, was looked at closer to determine the
extent of the problem.
The wall was observed for any deterioration, cracking, spalled concrete, and
signs of corrosion or any indicators of existing problems such as efflorescence or
damp spots.
The inspector was provided access to the concrete roof slab. The concrete slab
was inspected for any cracking, efflorescence, spalled concrete, and signs of
corrosion or other indicators of existing problems. Tank accessories were looked
at to determine the extent of the weathering of the fiberglass and the condition of
the bolts, fasteners and the screens. All penetrations were checked for signs of
leakage into the tank. All areas of concern were noted and mapped in the
inspector's field notes.
A dive team was given access to the interior of the tank and a video record was
made of the interior inspection. The process was monitored on the surface by
real time closed circuit video. The interior wall and floor were observed for
cracking, spalled concrete, and signs of corrosion, or other indications of existing
problems. Piping and internal accessories were checked for corrosion and
condition of their supports, bolts, and anchors.
The tank was fully surveyed and a record was made of all observations.
Photographs were taken as an additional record of the inspection.
3.0 Field Investigation
See attached Field Inspection Report.
4.0 Conclusions and Recommendations
The inspection of the 0.06-MG tank at the City of Tamarac's Water Treatment
Plant has been carried out in accordance with AWWA D110 and fulfills the
requirements of FAC 62-555.350. The inspection of the cast in place clearwell
revealed serious deterioration issues with the clearwell roof slab and supporting
beams.
2
(1) Condition of clearwell roof slab: Extensive deterioration of the concrete
roof slab was observed during the inspection. The two east most bays of
the main room in the clearwell exhibit the most severe degradation.
Concrete has spalled off the bottom mat of steel, exposing the reinforcing
and resulting in complete disintegration of the steel. Consequently, the
load carrying ability of the #7 bars spaced at 6.5 inches running north -
south has been compromised.
CECS recommends placing temporary shoring inside the clearwell to
support the damaged slab. Further deterioration of the slab is inevitable
and necessary repairs should be made to prolong the useful life of the
tank. As a result, CECS recommends a comprehensive concrete
restoration of the clearwell slab.
(2) Condition of clearwell roof slab support beams: The support beams
also show signs of severe deterioration. Two beams in particular show
cracking throughout the length of the beam 4 to 5 inches from the bottom
of the beam indicating that the beam bottom reinforcing is corroding. This
corrosion has resulted in the concrete below the bottom reinforcing
spalling from the rest of the beam.
CECS recommends placing temporary shoring inside the clearwell to
support the damaged beams. Beam bottom reinforcing steel is now
exposed to the destructive elements of the tank and further deterioration
of the beams will be accelerated, amplifying the importance of swift action
to make necessary repairs. As a result, CECS recommends a
comprehensive concrete restoration of the clearwell supporting beams.
(3) Window to clearwell: A gap between the plexi-glass cover and the
clearwell wall on the east wall of the main room was also noted by the
inspector (See Figures 3 and 4). Contaminants and insects can enter the
tank through this opening and affect the water quality. CECS
recommends sealing this gap.
Since CECS' inspection was a visual survey of the structure without any invasive
or destructive procedures or test, CECS cannot offer an opinion on the condition
or performance of the covered or hidden elements of the structure not visible
from the surface.
The proceeding report is submitted for your review and discussion. We would be
pleased to discuss the results with you. If you have any questions or concerns,
please do not hesitate to contact us.
V
Respectfully submitted,
CromEngineering and Construction Services, Inc.
Jeffery D. Malpass, P.E.
President
Mgt
Figure 1 - Location of 0.06 MG clearwell
Figure 2 - Exterior of facility pump building above clearwell
Figure 3 - View of window to clearwell
Figure 4 - View of gap between plexi-glass window and building
Figure 5. Top of slab covering the 0.6-MG Clearwell.
C
Figure 6. Cleaning robot used by AMPS to remove sediment from tank floor. Sediment was
as much as 18-inches deep in some spots.
No Text
=xax / , Y�AtiM'S"Ne9y4^•.i*NT.P_Fn�� .., ,:
TANK DETAILS
Location
Owner
Engineer
Diameter (ft)
Volume
Inspector(s)
CRDM ENGINEERING AND CONSTRUCTION SERVICES, INC.
259 SW 36th Terrace
Gainesville, Fl. 32607
352.548.3349 - FAX 352.548.3449
Tamarac Utilities West Water Treatment Plant
Irvin C. Rubin
Date: 1-20-06
Yes No Comments/Photos
FOUNDATION
1 Is the tank backfilled? X
2 Does the tooter appear to be level? N/A
3 Are there any gaps between the wall and the footer? N/A
4 Is the Tooter undermined anywhere? N/A
5 Floor/wall connection monolithic?
Yes No Comments/Photos
FLOOR
1 Has the tank floor been cleaned?
2 Waterstop type
3 Are there any visible cracks on the Floor?
4 Are there any rough spots on the floor?
X
X Cast -in -place detail
X
X
5 Are there any pipe penetrations through Floor? X
(size, distance above floor, etc.)
6 Are there any sumps? (size and depth) X
Additional Comments:
Yes No Comments/Photos
INTERIOR ROOF SLAB
1 Is there any exposed rebar? X See Video and attached drawing for locations
2 Is there any exposed mesh? X
3 Are there any stalled areas? X See Video and attached drawing for locations
4 Was the dome painted? (condition) X
Additional Comments:
The two east most bays of the main room have severe deterioration of the roof slab. There are large areas of spelled concrete
with exposed rebar. Many of the reinforcement bars have completely corroded through.
Yes No Comments/Photos
BEAMS
1 Is there any exposed rebar? X See Video and attached drawing for locations
2 Are there any cracks? X See Video and attached drawing for locations
3 Are there any spatted areas? X See Video and attached drawing for locations
Additional Comments:
Three beams have large cracks which run the entire length of the beam approximately 4 to 6 inches from the bottom of the beam.
The cracks range from hairline to 1/8" wide.
Yes No Comments/Photos
INTERIOR WALL
1 Are there any hollows? X
2 Are there any cracks? X
3 Are there stains on the wall? X
4 Was the wall painted? (Condition) X
Additional Comments:
Interior wall appears to be in good condition.
Yes No Comments/Photos
EXTERIOR ROOF SLAB
1 Are there any chips and spalls? X
2 Are there any cracks? X
3 Are there any flat spots? X
4 Are there any humps? _ X
Additional Comments:
Exterior of slab appears to be in good condition
'There is a gap between the plexi-glass window and the tank wall which should be sealed in order to keep outside contaminants
and insects out of the clearwell - See Figures 3 and 4.
VO..a MT.nR W,0 gal
NORTH
TANK FLOOR
INTERIOR NORTH WALL.
INTERIOR EAST WALL
^ CRAI'K
X:
PATTERN CROCKING
O
HOLLOW AREA
�%
EFFLORF5CENCE
�,%
CONCNhI'f$PALL
�
PEELING PAINT/COATING
EXP(YSED MESH / ROSI'SPoIS
INTERIOR SOUTH WALL
INTERIOR WEST WALL
NORTH
1
Volume a Tank 6G.GW gal
UNIFORM RUST SPOTS
THROUGHOUT ENTIRE
UNDERSIDE OF ROOF
FROM REBAR CHAIRS
CRACKS IN BEAM WITH RUST
COLORED STAINS -NO
OELAMINATION NOTED
DETERIORATING BEAM -CRACK RUNS
ENTIRE LENGTH OF BEAM 4 TO fi INCHES
FROM BOTTOM ON BOTH SIDES OF BEAM -
BOTTOM SECTION OF BEAM H45
DEIAMINATED AND 6 FgLLOW
ACCESS
HATCH
SPALLING WITH
EXPOSED REW
DETERIORATING BEAM -
CRACK RUNS ENI IRE LENGTH
OF BEAM 4 TO6INCHES FROM
BOTTOM OIV EAST SIDE
ix E%wSEo.
DEIEHIOMTED
REbW MRQIfi4X1T
FMIgE PAY
UNDERSIDE OF TANK ROOF & SEAMS
REMgTHRCWFINI
.IRE PAY
UNDERSIDE OF ROOF
SLAB IN POOR CONDUKNJ
IN THESE SAYS
CRACK RUNNING 5 to 6
INCHES OFF BOTTOM OF
SEAM WITH SECTIONS OF
OBLAMIN4TED CONCRETE
�—
CRACK
K%
PATTERN CRACKING
O
HOLLOW AREA
EPFLORRS ENCE
CONCREIESPALL
D
PEELING PAINT COATING
E%POSED MESH/ RUSTOIS
"EXHIBIT 2"
TR #11606
ECKL ER ENGINEERING, INC.
CONSULTING CIVIL ENGINEERS
September 26, 2006
442-003.01
Mr. James Moore, P.E.
Assistant Director of Utilities
City of Tamarac Utilities Department
6001 Nob Hill Road
Tamarac, FL 33321
Dear Mr. Moore
Reference: Structural Repairs of WTP Clearwell
P. O. No. 091259
The attached Report presents the findings of the August 14, 2006 engineering inspection of the
Clearwell at the Water Treatment Plant. The water level in the clearwell was lowered to allow Doug
Hammann and Ben Kough of Eckler Engineering and Gene Sanders, our structural consultant from
Jenkins and Charland Engineers, to examine the condition of the concrete and reinforcing steel in
the tank. This inspection was a follow-up to the DEP mandated inspection of finished water tanks
by divers which had revealed deterioration of the concrete and reinforcing steel.
The inspectors found cracking of the concrete in one column and five beams. The observed
cracking and spalling was caused by corrosion which expands the reinforcing steel. It was
apparently accelerated by exposure to high chlorine concentrations during the water disinfection
process. Significant spalling of the concrete has occurred in two of the eight concrete ceiling bays.
Spalling occurs as the cracks in the concrete grow, causing pieces of the concrete cover to break
away. This spalling has exposed severely damaged (corroded) reinforcing bars. In one area, five
adjacent parallel steel bars are visible, and corroded or missing.
The inspectors also found hundreds of rust spots on the ceiling throughout the tank caused by
corrosion of the steel chairs (brackets) used to support the reinforcing steel mat during placement of
the concrete. Although the corrosion has not advanced enough to cause cracking of the concrete,
since the chairs are in contact with the reinforcing steel, each rust spot represents a potential path
for corrosion to reach the rebar.
The structural integrity of the clearwell is important not only because it is a key element in the
finished water process but because it is part of the foundation for the water plant control building.
The clearwell was designed in 1969 as part of a one story structure but in 1990, a second floor was
later added.
Gene Sanders' structural evaluation of the tank's condition and his recommendations for repair are
presented in his attached letter dated September 12. These conclusions are based on Mr. Sanders
30 years of South Florida experience with corroded reinforcing steel in concrete structures.
Selection of the optimum repair procedure to restore and preserve the structural integrity of the
clearwell must consider the required longevity, repair cost and duration and its impact on plant
Celebrating our 21st Year of Service to South Florida
4700 RIVERSIDE DRIVE, SUITE 110 9541510.4700
CORAL SPRINGS, FL 33067 Pnnte on Recycled Paper FAY9541755-2741
Mr. James Moore, P.E.
September 26, 2006
Page 2
operations. Since the clearwell is the final collection vessel for all finished water from the filters, if it
is removed from service for repair, the packaged filters would be shutdown and by-pass pumps
would be required in the Greenleaf filter. Bypass pumping costs during clearwell repairs are
estimated to be $50,000 to $100,000.
Four repair options are being considered. Option 1, recommended by our structural engineer,
utilizes conventional repair techniques to restore the original design strength of the slab. Option 2
would wall off and backfill the two east bays (1 & 2) which are the most heavily damaged. This
would reduce the clearwell volume by 25% to 45,000 gallons but the transfer and backwash pumps
would remain operational in their current location.
Option 3 would minimize repairs in the clearwell and assumes that the top mat of reinforcing steel is
not damaged by corrosion, The damaged beams and spalled slab portions would be chipped and
patched and the entire ceiling structure would be sprayed with a tank coating to shield the reinforcing
steel from moisture. The slab will be cored to investigate the condition of the covered reinforcing
steel. Option 4 would make no repairs to the clearwell and continue it's use with regular inspections
while a new clearwell is constructed west of the entrance drive. The new clearwell would be sized
and designed to be utilized as a component of future water treatment plant construction.
The estimated cost of the proposed options are not yet available, but the relative cost is indicated
on a scale from 1 (least expensive) to ten (most expensive).
OPTION
(DESCRIPTIONS
BELOW)
ESTIMATED
COST
(SCALED
ESTIMATED
LIFE EXPECTANCY
COMMENTS
1. Full restoration
8
10 years
2. Abandon Bays 1 & 2
6
10 years
3. Limited repair
5
2- 10 years
Six month inspections
4.New Clearwell
10
30 years
Option 1:
All slab bays, beams and columns which display rust stains will be stripped of surface concrete
(typically to 2 1/2") to expose sound reinforcing steel. Rebar will be exposed a minimum of V on all
sides and sandblasted to white metal. Steel which is less than 70% of it's original diameter must be
replace with a minimum overlap of 36" at each end of the damaged area. All exposed rebar will
receive two coats of Armatec 110 to retard corrosion. New concrete will be shotcreted to provide a
minimum of 2" of concrete cover over the steel. Provide shoring for the slab and beams during
construction.
Option 2:
Abandon Bays 1 & 2 extending the east finished water and overflow pipes 30' into Bay 3. Construct
concrete isolation/support walls between Bays 2 and 3 and 2 and 6 then backfill bays 1 & 2.
Sandblast, chip or grind all rust stained concrete spots to sound reinforcing steel and prime to
prevent future corrosion. Cover all exposed steel with cementitious grout. The cracked beams
(Bays 4 & 7) and column (Bay 8) will be stripped of bottom surface concrete (typically 21/2") to
expose the reinforcing steel. Rebar will be exposed a minimum of 1" in all dimensions, sandblasted
Mr. James Moore, P.E.
September 26, 2006
Page 3
and coated. Add new rebar where required. The exposed rebar will be covered with a minimum of
2" of new concrete. Provide temporary shoring for the slab and beams under repair.
Option 3:
The two slabs and 3 cracked beams in Bays 1 & 2 Bay 8 shall be stripped of the bottom surface
concrete (typically 2.5") to expose the reinforcing steel. Rebar will be sand blasted, replaced as
necessary and coated then covered with 2" of concrete (shotcrete) over the steel.
The cracked beams (Bays 4 & 7) and column (Bay 8) will be chipped to a 1" depth to investigate the
subsurface conditions. Additional chipping or stripping of additional concrete may be required at the
direction of the Engineer to expose the rebar. Where the rebar is exposed, it will be primed and
covered with 2" of concrete (shotcrete).
All other areas clearwell will be sandblasted to remove rust spots. All exposed steel will be primed
with Armatec 110. Additional chipping or grinding may be required to remove rusted steel at some
locations. Exposed steel will be coated and covered with 2" of concrete (shotcrete). Two coats of
polyamidoamine epoxy will be applied to seal all ceiling and column surfaces. Provide temporary
shoring for slabs and beams under repair.
Option 4:
Abandon the clearwell after constructing a new clearwell west of the entrance drive then relocate the
transfer and backwash pumps with the intent that this new structure would be utilized in future new
water treatment plant construction. Continue operation of the clearwell during construction with
inspections every 3 months to monitor further deterioration.
Eckler Engineering recommends the repair outlined in Option 3. This option is anticipated to be the
least expensive, provides immediate repair of the damaged structural elements and investigation,
preservation and monitoring of the other corrosion sites in the wetwell.
After you have had a chance to review the options and recommendations contained herein, we
would like to meet with you and other applicable Tamarac Utilities staff to determine the direction to
proceed at this time. Tentatively, we would like to meet the week of October 9, 2006.
Please review these findings, then we will meet with you to answer questions. If you require
additional information, please do not hesitate to contact me.
Sincerely,
Douglas K. Hammann, P.E.
Encl.
cc: Mr. John Harvey
Mr. Gene Sanders, P.E.
442-003 Clearwell Repair.wpd
INSPECTION REPORT
WATER TREATMENT PLANT
CLEARWELL
forthe
CITY OF TAMARAC
Prepared By
ECKLER ENGINEERING, INC.
4700 Riverside Drive
Coral Springs, Florida 33067
EE No. 7802
August 2006
Douglas Hammann, P.E., 50589
INSPECTION REPORT
CLEARWELL REPAIR
TAMARAC WATER TREATMENT PLANT
DATE: August 17, 2006
PROJECT: 442-003.01
REFERENCE: Structural Inspection of Clearwell Concrete
ATTENDEES: Mr. Gene Sanders, P.E., Jenkins and Charland
Mr. Doug Hammann, P.E., Eckler Engineering
Mr. Ben Kough, P.E., Eckler Engineering
Water flow into the Clearwell was shutdown and it was pumped down to a depth of I
foot. The inspectors entered the Clearwell and examined the concrete surfaces and
evaluated and documented the areas damaged by corrosion of the reinforcing steel.
Longitudinal concrete cracking,'/2" to 6" from bottom of beam
Concrete spalled from ceiling exposing corroded rebar. Cracking
2-3" from the bottom of the beam
Exposed rebar with less than'/2" of concrete cover. Dark gray
remains of previous patching
All eight bays of the Clearwell showed rust in 100-500 spots, each locating corroding
reinforcing steel. On five of the beams and one column, longitudinal cracking has
occurred. At over one hundred locations the concrete has spalled, exposing the remains
of the rusted rebar. Some locations show evidence of prior patching efforts.
Predominant rust spot patter❑ from exposed or minimally covered rebar
Transfer pump - exposed and corroded rebar
CHEMICAL FEED LOCATIONS
The chlorine diffuser is a vertical 24" long, 3/4" pipe located in the northeast corner of the
wetwell (no photo) as shown on Drawing 2.
The ammonia diffuser is the horizontal assembly shown below and located on Drawing 2.
MISCELLANEOUS FINDINGS
Rusted metallic grout
Rusted steel bracket
Rusted steel conduit support
Rusted, abandon unistrut
Spalled concrete (16"x 6" x1.25") and rusted rebar
BAY 7
1
11 t
I
1 I
CORROSION ON BOTTOM OF CLEARWELL TOP SLAB
SCALE : 1/4" = V-0"
(REFLECTED CEILING PLAN)
LEGEND
RUST SPOTS
SPALLS
CRACKS
EXPOSED RUST SPOTS
SPALLED CONCRETE
ON INLET BOX
DSCN: B. KOUCH VERIFY SCALE JtN KINA & CITY ®F TkLMARAC
CHARLAND Dwc No a1
r—t"�{ ewronA�co
ECOCLE{4 ENGINEERING, INC. DR: R.P. ® =ad ...w ..Am CLEARWELL
383G N.W. 53rd $h..l PROJ ND 942-00].D01
CHK: DA.WIANN W Is ONE INCH ON FORT LApERDALE FL 3330G STRUCTURAL REPAIR OF TOP SLAB DAMAGE
4200 RIVERSIDE DRIVE, SUITE 110 — CORAL SPRINGS, FL. 33067 ORIGINAL DRAWINO. Ea ^b30 (934) aea_)JD DONALD ECKLER, P.E.
(954) 510-4J00 — EB No. 7803 ppyp: pA.ECKLER Kum SCALES WTP CLEARWELL
AS uECEBYAv. NO DATE REVISIONS BY APVD CONSULTANT FL a189]4 PATE AUC. 2008
JENKINS &
CHARLAND
INCORPORATED
Consulting Engineers Structural - Civil
Tuesday, September 12, 2006
Mr. Doug Hammann
Eckler Engineering, Inc
4700 Riverside Drive
Coral Springs, FL 33067
Ref: Tamarac Water Treatment Plant
Clear Water Tank
Dear Doug
The present condition and possible courses of action to restore the structure of the clear water
tank at the above referenced facility are presented below.
The condition of the underground tank was determined by visual observations. No destructive
investigations were performed.
The below ground tank is under a two story building. Deterioration of the concrete structure of the
tank ceiling which is the ground floor slab has advanced to the point where there are indications
of corrosion of the steel embedded in the concrete slab, concrete beams, concrete walls and the
upper portion of the concrete columns.
Corrosion of reinforcing steel embedded in new concrete is resisted by the chemical properties of
the new concrete. As the concrete ages the chemistry at the surface is changed by the infusion of
chlorine. The depth of chorine penetration increases as the concrete ages. After passage of
sufficient time the penetration depth reaches the reinforcing steel and corrosion begins. Rust, the
product of corrosion, occupies a greater volume than the original steel. As the corrosion
progresses the intimate bond between steel and concrete is compromised and the surface
concrete is initially cracked and then spalled off. The time from original construction to the onset
of corrosion is typically measured in several tens of years whereas the time from the onset of
corrosion to the point where the structural integrity of the slab is compromised progresses at a
significantly faster rate. It is difficult to predict the rate of deterioration of strength once corrosion
begins but it could be as little as a fraction of a year but is unlikely to be more than a year or two.
Rust stains indicate the chemistry of the concrete has changed and is no longer preventing
corrosion. Cracks indicate that sufficient rust has formed to both compromise the bond between
concrete and steel and the volume of the rust is sufficient to overcome the tensile strength ofthe
concrete. As the cracks increase eventually pieces of the surface concrete will be isolated and
become completely detached.
Observations revealed evidence of corrosion ranging from rust stains to cracks and spelling in all
of the slab soffits. Corrosion has progressed in the beams and at the tops of the columns to the
extent necessary to form cracks in the surface concrete.
To restore the structure to its original strength, the aged concrete must be removed from around
the corroded reinforcing and replaced with new concrete. The reinforcing steel may be re -used
after the rusted surface is removed and cleaned to allow re -bonding of the steel to the new
concrete. Additional reinforcing may be required if the area of steel after cleaning has been
reduced significantly by rusting.
3590 Northwest 56 Street Fort Myers
Fort Lauderdale, FL 33309 Sarasota
(954) 484-7777 Fax: (954) 484-7834 Fort Pierce
JENKINS &
CHARLAND
INCORPORATED
Consulting Engineers
Mr. Doug Hammann
09/12/06
Page 2.
Structural - Civil
Failure to provide at least one inch of concrete in all directions around the cleaned reinforcing will
significantly compromise the corrosion protection provided by the new concrete.
There are two alternatives to restoring the concrete slab to its original design strength. These are:
1) Remove the bottom surface of the concrete slab and the bottom layers of reinforcing
steel. Make the excavated surface smooth with cementitious grout and design a mat of
carbon fiber mesh with sufficient strength to replace the original reinforcing.
2) Remove the bottom surface of the concrete slab and the bottom layers of reinforcing
steel. Introduce new columns and associated foundations spaced sufficiently close to
allow the remaining concrete slab, which now has a reduced thickness, to act as un-
reinforced concrete. The spacing of the new columns and foundations is dependent on
the thickness of the concrete that is remaining after the removal of the bottom layer of
reinforcing.
Both of these alternatives will probably be more expensive and / or labor intensive than the
conventional remedial work described above.
Other alternatives have been suggested that modify the chemistry of the concrete to restore its
ability to prevent corrosion. While many of these processes work as advertised none of them has
the ability to remove the rust from the reinforcing steel nor restore the bond between concrete
and steel which is essential to restore the slab strength. These processes are only effective if
they are employed before the onset of corrosion.
It is recommended that the slab. beams and columns be repaired by removing the surface
concrete, cleaning the existing reinforcing steel and placement of additional steel if necessary
and forming and pouring new concrete on the slab soffit. Any compromise of this procedure will
result in a repair that is difficult to determine the useful life but will likely be much less than 10
years.
Very truly yours,
Jenkins and Charland, Inc
Gene S Sanders, P.E.
Vice President
Gene S Sanders
FL P.E.26590
9/ 26/ 200614:33
3590 Northwest 56 Street Fort Myers
Fort Lauderdale, FL 33309 Sarasota
(954) 484-7777 Fax:(954) 484-7834 Fort Pierce
Utilities
Administration
TO:
FROM:
DATE:
SUBJECT:
City of Tamarac
"Committed to Excellence... Always"
MEMORANDUM
Mr. Douglas K. Hammann, P.E.
"EXHIBIT 3"
TR #11606
Eckler Engineering, Inc.
4700 Riverside Drive, Suite 110
Coral Springs, FI 33067
James T. Moore, P.E. Asst. Director of Utilities— City of Tamarac
October 11, 2006
Structural Repairs of WTP Clearwell
Cancellation of PO # 091259
As we discussed at our meeting on October 10, 2006, the City of Tamarac -
Utilities has decided to cancel the PO #091259 with Eckler Engineering, Inc. for
Structural Repairs of the existing WTP Clearwell. We feel that capital dollars
would be best spent in constructing a new clearwell designed with the capacity to
meet both existing and proposed DEP regulations. The repairs outlined in your
September 26, 2006 memo, which detailed the options for the Structural Repairs
of the WTP Clearwell, would result in too much WTP clearwell downtime and
potential cost overruns. In addition, the bypass pumping systems that would
need to be installed would put the WTP operation at greater risk with the
clearwell out of service.
We will keep you informed regarding our timetable to complete the new clearwell.
Please submit your invoices for engineering costs incurred on this project
through October 10, 2006 at your earliest convenience.
Please contact me if you have any further questions.
Sincerely,
James T. Moore
CC: Gary Wainwright - City of Tamarac
Raymond E. Gagnon, P.E. - City of Tamarac
John Harvey - City of Tamarac
Keith Glatz - City of Tamarac
Donald A. Eckler, P.E. -Eckler Engineering, Inc.
6001 Nob Hill Road ® Tamarac, Florida 33321-6200 ■ (954) 724-2400 0 Fax (954) 724-2406 is www.tomorac.org
Equal Opportunity Employer
"EXHIBIT 4"
TR #11606
TASK AUTHORIZATION NO. 09-04E:
SCOPE OF SERVICES
WATER TREATMENT PLANT CLEARWELL ADDITION
INTRODUCTION
On March 11, 2009 Eckler Engineering met with the City of Tamarac to discuss the finished water
clearwell and transfer pumping improvements planned for the CITY's Water Treatment Plant. The
general scope of this project is preliminary design, preparation of drawings and specifications and
engineering services during the construction phase of this project. This project will also be
coordinated with and include applicable recommendations from the CITY's Water Master Plan,
dated January 22, 2009.
In accordance with our project planning meetings, the following design scope is recommended and
included in this project proposal:
New reinforced concrete clearwell structure. The anticipated design criteria for this
structure shall be as follows:
Design flow rate of 15.0 MGD.
Incorporate transfer and backwash pumping systems into the structure.
Incorporate area to blend lime softened water with future membrane
permeate, prior to final disinfection contact volume of the proposed
clearwell.
Incorporate provision to receive membrane permeate from future
degasification tower(s) and blowers to be located adjacent to the proposed
clearwell.
Final disinfection contact volume shall be based on CT value to meet 4-log
virus deactivation based on free chlorine disinfection.
New filter effluent transfer pumps. The final number of variable speed transfer
pumps to produce the firm design capacity of 15.0 MGD will be determined during
the preliminary design. This determination shall be based upon specific pumping
conditions as determined from the pump manufacturer's data and in order to meet
electrical power availability from the existing motor control center.
New filter backwash pumps. Two (2) constant speed backwash pumps with a firm
capacity of 2000 GPM. This flow rate is equivalent to a filter backwash rate of 20
GPM/SF.
4. New filter effluent and backwash supply piping improvements to facilitate the new
clearwell installation.
5. Conversion of the existing filters to influent rate of flow control. This will allow for
greater flexibility in the filter effluent piping design and operation. The existing
Greenleaf filter operation shall remain as existing. Greenleaf Filter may require
revision to effluent weirs.
6. Relocation of existing NaOCI and ammonia piping to service the new clearwell.
Page 1 of 17
7. New concrete and CMU power distribution and VFD equipment enclosure at the
proposed clearwell. This enclosure will house the proposed transferpump(s) VFD's,
backwash pump(s) MCC, primary power distribution for the clearwell systems and
space for future facility improvements.
8. New raceways for new and proposed electrical loads and instrumentation needs.
Raceways will originate from the existing MCC area for power and from the existing
control room area for instrumentation.
9. Coordinate and provide control strategies for modifications to the CITY's existing
SCADA system to incorporate the new clearwell, transfer pumping system revisions
and backwash pumping revisions.
10. New field instruments for the revised operations including clearwell level
transducer(s), filter level transmitters, free and total chlorine residual analyzers and
other field instruments as necessary for a properly functioning instrumentation and
control system.
11. Yard piping modifications and improvements to facilitate the new clearwell and
pumping systems.
12. Provide new electrical power distribution from the existing gear to facilitate the
proposed improvements. Power distribution improvements for the future LPRO
system are not included within this scope.
13. Modifications to existing on site sanitary collection and transmission system to
facilitate the proposed improvements.
14. Elimination of the existing clearwell, transfer pumps and process water (W2) pump
after new facilities are in operation.
15. Revision to provide process water supply (W2) from the existing high service
pumps.
16. Design of general aesthetic and site work to be included at this site including but not
limited to the following:
General site cleanup and restoration.
Painting of interior walls, piping, conduits, and miscellaneous items that are
proposed or disturbed by progress of work.
Painting of exterior walls piping, conduits, and miscellaneous items that are
disturbed by the progress of the work.
Architectural improvements related to scope of work.
Relocation of existing employee parking area impacted by the work.
Miscellaneous site work improvements inclusive of grading, sidewalks,
pavement restoration and sodding.
The preliminary task order Opinion of Probable Construction Cost for the above referenced
improvements is estimated at $1,200,000 to $1,500,000. (These figures represent the budget cost
range and cannot be warranted due to market construction cost conditions.)
Page 2 of 17
The engineering tasks associated with this project are presented below:
ARTICLE 1 - SCOPE OF SERVICES
Design Phase
Task D1 - Project Administration/Management
This task focuses on the administration of the project including project setup, client interface and
general project management and administration.
Task D2 - Data Evaluation and Preliminary Design
This task focuses on obtaining the necessary preliminary information required to prepare detailed
engineering plans and specifications.
A. Meet with appropriate CITY staff to discuss project requirements.
B. Visit the site and review pertinent features that may impact design and/or
construction.
C. Collect data available for the existing facilities, including field conditions, record
drawings, connection locations, and information on other potentially impacted
utilities.
D. Prepare scope of services, coordinate and complete geotechnical work as may be
applicable.
E. Prepare scope of services, coordinate and complete additional topographic survey
as may be applicable.
Task D3 - Preliminary Design Report (Memorandum)
This task consists of the appropriate level of engineering to analyze and prepare final design
requirements for this project.
A. Evaluate the data assembled under Task D2 for the establishment of the final
design criteria for the proposed revisions.
B. Prepare a preliminary design memorandum for this project. The preliminary design
report (memorandum) will be prepared for this project in accordance with Florida
Department of Environmental Protection Rules FAC Chapter 62-555. The report
(memorandum) shall detail all proposed modifications at the facility.
Preliminary design requirements for all system components to be modified or
completed as part of this project will be presented as part of the Preliminary Design
Report (memorandum). These improvements will include civil, structural,
architectural, electrical, mechanical, and instrumentation requirements.
Page 3 of 17
C. The preliminary design memorandum shall include 50% complete drawings and
specifications.
D. Prepare a preliminary opinion of probable construction cost for the improvements
proposed for this project.
E. Meet with appropriate CITY staff to discuss and finalize the project design and
parameters.
Task D4 - Drawings and Engineering
This task consists of the engineering and the development of plans necessary to construct this
project.
A. Prepare detailed drawings for the proposed work discussed previously within this
Exhibit. A tentative list of final design drawings to be developed for this project is
presented in Table 1. Drawings will be prepared using drafting standards and
standard details as developed by Eckler Engineering, Inc.
Task D5 - Specification Preparation
This task consists of the preparation of specifications necessary to construct this project.
A. ENGINEER shall prepare technical specifications required forthis project in Division
1 through Division 16. These specifications, utilizing the CSI format, will be
prepared and will consist of written technical descriptions and materials, equipment
and construction systems, standards and workmanship required for this project as
developed by Eckler Engineering. A tentative list of specification sections to be
prepared for this project is presented in Table 2.
B. The City of Tamarac standard bidding requirements, contract forms and
miscellaneous forms/information required for this project shall be utilized.
Consultant shall provide the Cityof Tamaracwith project specific information for the
preparation of bidding and contract documents required for this project.
Task D6 - Permit Preparation Assistance
This task consists of preparing the following permit application submittals:
A. Broward County Health Department (BCHD)/ Florida Department of Environmental
Protection (FDEP) permit to construct minor WTP improvements.
Any additional permits required beyond the above will be considered as outside the scope of this
proposal.
Task D7 - Final Opinion of Probable Construction Cost
Prepare the 50%, 90%, 100%, and final levels of Opinion of Probable Construction Cost for new
facilities and improvements proposed under this project.
Page 4 of 17
Task D8 - Bidding Assistance Services
This task shall include work necessary to assist CITY with the bidding of this project. This work
may include the following:
A. Assist with the coordination of the bidding documents and the advertisement for bid
and respond to communication from contractors and issue addenda information as
required. Provide up to twenty (20) sets of bid documents for distribution by the
CITY to potential bidders.
B. Attend the pre -bid meeting and distribute the minutes of the meeting to bidders.
C. Respond to written questions by potential bidders and, if needed, assist the CITY
in issuing addenda.
D. Attend the bid opening and tabulate the bids as provided by interested contractors.
Task D9 - Bid Evaluation and Recommendation of Award Assistance
This task shall consist of the review and evaluation of the bids and the recommendation of a bidder
for award of contract to the CITY.
Task D10 - Submit and Review (Quality Control)
The ENGINEER will make the following submittals at various completion levels of this project for
the purpose of CITY's review and comment for coordination and quality control. A review meeting
will be requested following each submittal to discuss and receive comments from CITY. The
CITY's comments shall be incorporated into revisions prior to the next subsequent quality control
submittal. Quality control submittals for this project are anticipated at the following completion
levels:
A. Preliminary Design Report (memorandum) and 50% Drawings and Specifications
B. 90% Drawings and Specifications.
C. 100% Drawings and Specifications.
The ENGINEER will incorporate the agreed -upon revisions made by the CITY.
A total of three (3) meetings with the CITY is the level of effort for this Task.
Task D11 - Regulatory Agency Permit Fees
ENGINEER shall pay all permit fees required by the applicable regulatory agencies during the
design phase of the project.
Construction Phase
A scope of services proposal for engineering services during construction will be developed at a
later date when requested by the City of Tamarac.
Page 5 of 17
Project Deliverables
Project deliverables for the project design and construction phases shall be in accordance with
Table 4, attached.
ARTICLE 2 - DATA OR ASSISTANCE TO BE PROVIDED BY CITY
A. Provide assistance with regulatory agencies.
B. Provide ENGINEER with assistance in locating existing facilities, when requested.
C. Provide general project review, where required.
D. Provide copies of existing facility record drawings.
E. Provide copies of existing SCADA system as-builts.
ARTICLE 3 - TIME OF COMPLETION
Table 3 provides the preliminary project schedule based on days from the receipt of the
Authorization to Proceed.
ARTICLE 4 - PAYMENT AND COMPENSATION
As consideration for providing the services enumerated in Article 1, the CITY shall pay the
ENGINEER fees as described below:
A. Design Phase
For the services enumerated in Article 1, Tasks D1 through D11, the lump sum fee
of $139,000.
These fees have been determined in accordance with the scope of work breakdown
attached as Table 5.
The fee does not include the provision of the following items:
1. Preparation of permit submittal applications to the City of Tamarac Building
Department.
2. Any expert witness or testimony services.
3. Design of improvements to the existing emergency and primary power
systems.
4. Engineering services during construction.
5. Any hydrogeologic work required for the design of dewatering systems or
the evaluation of the impact on construction dewatering systems for
contamination sites within a quarter mile radius of the project site.
Page 6 of 17
6. Landscaping and irrigation system designs.
ARTICLE 5 -AUTHORIZATION
In WITNESS WHEREOF, the parties have made and executed this Agreement on the respective
dates under each signature. CITY OF TAMARAC, signing by and through its Mayor and City
Manager, and CONSULTANT, signing by and through its President, duly authorized to execute
same.
ATTEES�T, ::
Marion Swenson, CIVIC
City Clerk
'�
Date
ATTEST:
(Corporate Secretary)
Donald A. Eckler
Type/Print Name of Corporate Secy.
(CORPORATE SEAL)
Page 7 of 17
CITY OF TAMARAC
Beth Flansbaum-Talabi co, Mayor
Date
Jeffr�Miller'; City Manager
i` dl 1'
Date
Approved as to form and legal
sufficiency:
dam [Goren, City Attorney
EJ5
Date
Eckler Engineering Inc.
Company Name
✓`"'w'.cu^ vim^
Signature of President/Owner
Donald A. Eckler, P.E.
Type/Print Name of President/Owner
Date
CORPORATE ACKNOWLEDGMENT
STATE OF Florida
SS
COUNTY OF Broward
I HEREBY CERTIFY that on this day, before me, an Officer duly authorized in the State aforesaid
and in the County aforesaid to take acknowledgments, personally appeared Donald A. Eckler, of
Eckler Engineering, Inc., a Florida Corporation, to me known to be the person(s) described in and
who executed the foregoing instrument and acknowledged before me that he executed the same.
WITNESS my hand and official seal this day of �rp�c(� /D 2009.
...
'Signature of Notary Public
UNDA C. FRACASSO
State of Florida at Large
,lisreo Comm#DD0855027
y.�Expires 5/1/2013
Linda C. Fracasso
Florida Notary Asm., J,,
ro
Print, Type or Stamp
.....................................
Name of Notary Public
X Personally known to me or
Produced Identification
Type of I.D. Produced
DID take an oath, or
X DID NOT take an oath
Y:\Documents\Tamarac\BD\WTP Clearwell Addition\Task Auth 09-04E.wpd
Page 8 of 17
TABLE 1
WATER TREATMENT PLANT CLEARWELL ADDITION
TENTATIVE LIST OF PROJECT DRAWINGS
Drawing
Sheet No. Title
General
Cover sheet
G-1
Index to Drawings and Project Location Map
G-2
General Notes and Abbreviations
G-3
Mechanical Legends and Symbols
G-4
Architectural and HVAC Legends
G-5
Process and Instrumentation Legend
G-6
Electrical Notes and Legends
G-7
Overall Plant Flow Schematic
G-8
Design Criteria (Sheet 1)
G-9
Design Criteria (Sheet 2)
Civil
C-1
Site Survey
C-2
Overall Site Plan and Boring Locations
C-3
Paving and Grading Plan Key Map
C-4
Paving and Grading Site Plan (Sheet 1)
C-5
Paving and Grading Site Plan (Sheet 2)
C-6
Existing Clearwell System Demolition Plan and Sections
C-7
Existing Clearwell Demolition Details
CD-1
Standard Details - Civil
CD-2
Standard Details - Civil
Architectural
A-1
Existing Control Building 1" Floor Modifications
A-2
Electrical Building Floor and Roof Plans
A-3
Electrical Building Architectural Elevations
A-4
Existing Facilities Painting Plan
A-5
Finish Schedules
A-6
Door and Hardware Schedules
AD-1
Standard Details - Architectural
Structural
S-1
New Electrical Building Floor and Roof Plans
S-2
New Electrical Building Sections
S-3
New Electrical Building Structural Elevations
Page 9 of 17
S-4
Clearwell Foundation Plan
S-5
Clearwell Top Plan
S-6
Clearwell Sections
S-7
Clearwell Sections
S-8
Clearwell Sections and Details
S-9
Existing Clearwell Basin Modifications
SD-1
Standard Details - Structural
SD-2
Standard Details - Structural
Mechanical
M-1
Piping Schedule and General Mechanical Notes
M-2
Hydraulic Profile
M-3
Yard Piping Key Map
M-4
Yard Piping Plan (Sheet 1)
M-5
Yard Piping Plan (Sheet 2)
M-6
Yard Piping Plan (Sheet 3)
M-7
Yard Piping Details
M-8
Clearwell Equipment Plan
M-9
Clearwell Sections
M-10
Clearwell Sections and Details
M-11
Clearwell Sections and Details
M-12
Existing Transfer and Backwash Pump Station Modifications
M-13
Process Piping Profiles
M-14
Sanitary Profiles
MD-1
Standard Details - Mechanical
MD-2
Standard Details - Mechanical
MD-3
Standard Details - Mechanical
MD-4
Standard Details - Mechanical
MD-5
Standard Details - Mechanical
Instrumentation
1-1 Process and Instrumentation (Sheet 1)
1-2 Process and Instrumentation (Sheet 2)
1-3 Process and Instrumentation (Sheet 3)
ID-1 Standard Details - Instrumentation and Controls
Electrical
E-1
Electrical Site Demolition Plan
E-2
Electrical Site Installation Plan
E-3
Existing Transfer and Backwash Pump Demolition Plan
E-4
New Clearwell Electrical Plan
E-5
New Clearwell Lighting and Grounding Plan
E-6
Transfer Pump and Backwash Pump Station Electrical Plan
E-7
Plant One -Line Diagram Power (Sheet 1)
E-8
Plant One -Line Diagram Power (Sheet2)
E-9
Riser Diagram and Conduit Schedule
Page 10 of 17
E-10
Transfer Pump VFD Schematics and Details
E-11
Existing PLC 1/0 Modifications (Sheet 1)
E-12
Existing PLC 1/0 Modifications (Sheet 2)
E-13
Clearwell - ACP (Sheet1)
E-14
Clearwell - ACP (Sheet2)
E-15
New Electrical Building One Line Diagram Power
E-16
Electrical Building Electrical Equipment Plan
E-17
Electrical Building Lighting and Receptacle Plan
E-18
Electrical Building Grounding Plan
E-19
Panelboard Schedules
E-20
PLC Arrangement Diagram
ED-1
Standard Details - Electrical
ED-2
Standard Details - Electrical
ED-3
Standard Details - Electrical
(Remainder of page left blank intentionally)
Page 11 of 17
TABLE 2
WATER TREATMENT PLANT CLEARWELL ADDITION
TENTATIVE LIST OF PROJECT SPECIFICATIONS
SECTION NO. TITLE
PART 1 BIDDING REQUIREMENTS
(These documents provided by City Purchasing Division)
PART 2 CONTRACT FORMS
(These documents provided by City Purchasing Division)
PART 3 MISCELLANEOUS FORMS/INFORMATION
(These documents provided by City Purchasing Division)
PART 4 SPECIFICATIONS
Division 1 - General Requirements
01005
General Requirements
01010
Summary of Work
01050
Field Engineering
01200
Project Meetings
01300
Submittals
01400
Quality Control
01500
Construction Facilities and Temporary Controls
01505
Mobilization/Demobilization
01700
Contract Closeout
01720
Project Record Documents
01730
Operation and Maintenance Data
01740
Warranties and Bonds
Division 2 - Sitework
02072
Demolition
02200
Earthwork
02500
Restoration and Cleanup
02510
Asphaltic Pavement and Base
02630
Concrete Sidewalks, Drives and Curbs
Division 3 - Concrete
03100 Formwork
03200 Concrete Reinforcement
Page 12 of 17
03251
Expansion and Construction Joints
03300
Concrete
03315
Prestressed Composite Tank
03410
Structural Precast Hollow Core Planks
03600
Grout
Division 4 - Masonry
04100 Mortar
04200 Concrete Unit Masonry
Division 5 - Metals
05500 Fabricated Metalwork and Castings
05516 Ladders
05520 Handrails and Railings
Division 6 - Wood and Plastic
06611 Fiberglass Weir Plates
Division 7 - Thermal and Moisture Protection
07230 Vapor Barrier
07533 Thermoplastic Single -Ply Membrane Roofing System
07900 Sealants
Division 8 - Doors and Windows
08120 Aluminum Doors and Frames
08710 Finish Hardware
Division 9 - Finishes
09201 Portland Cement Plaster (Stucco)
09900 Protective Coatings
Division 10 -Specialties
10199 Miscellaneous Building Specialties
Division 11 - Equipment
11037 Vertical Turbine Pumps -General
11037-1 Vertical Turbine Pumps -Specific
11037-2 Vertical Turbine Pumps -Specific
Division 12 - Not Used
Page 13 of 17
Division 13 - Special Construction
13700 Process Instrumentation and Controls
13710 Programmable Logic Controller
13711 Existing PLC/SCADA System Modifications
13720 Variable Frequency Drives
Division 14 - Conveying Systems - Not Used
Division 15 - Mechanical
15005
Ductile Iron Pipe (Water)
15029
Testing and Disinfection (Pipelines, Structures and
Equipment)
15100
Manually Operated Valves
15105
Self -Contained Automatic Process Valves
15400
Plumbing
15800
Air Conditioning
Division 16 - Electrical
16000
Electrical General Requirements
16001
Electrical Demolition
16050
Basic Materials and Methods
16110
Lightning Protection
16160
Panelboards
16345
Short -Circuit Coordination Study and Arc Flash
Hazard Study
16460
Dry Type Transformers
16921
480 - Volt Motor Control Center
Appendices
Appendix A - Report of Geotechnical Exploration
(Remainder of this page left blank intentionally.)
Page 14 of 17
TABLE 3
WATER TREATMENT PLANT CLEARWELL ADDITION
PRELIMINARY PROJECT SCHEDULE
Time to Cumulative Time
Activity
Complete
To Complete
(Days)
(Days)
1.
Notice to Proceed
0
0
2.
Site Visit/Information Gathering/Topographic
Survey/Geotechnical
30
30
3.
Preliminary Design Memorandum (50% Submittal)
45
75
4.
Receive CITY Comments.
14
89
5.
Submit 90% Drawings and Specifications
30
119
6.
Receive CITY Review Comments
14
133
7.
Submit 100% Drawings and Specifications
14
147
8.
Receive CITY Review Comments
7
154
9.
Submit Final Plans and Specifications along with
7
161
permit applications and final cost opinion
10.
Regulatory Permitting Phase
30
191
11.
Bidding and Award Phase
60
251
12.
Construction Phase (Final)
240
491
13.
Project Closeout
30
521
Detailed schedule will be provided upon receipt of authorization to proceed and will include specific
submittal dates.
(Remainder of page left blank intentionally.)
Page 15 of 17
TABLE 4
WATER TREATMENT PLANT CLEARWELL ADDITION
LIST OF PROJECT DELIVERABLES
DESIGN PHASE
A. 50% Design Submittal
• Three (3) copies of Preliminary Design Report (memorandum).
• Three (3) sets of 11" x 17" Drawings, 50% Complete
• Three (3) set of Specifications, 50% Complete
50% Completion Estimate of Probable Construction Cost
B. 90% Design Submittal
• Three (3) copies of Preliminary Design Report (memorandum).
• Three (3) sets of 11" x 17" Drawings, 90% Complete
• Three (3) set of Specifications, 90% Complete
• 90% Completion Estimate of Probable Construction Cost
C. 100% Design Submittal
• Three (3) copies of Preliminary Design Report (memorandum).
• Three (3) sets of 11" x 17" Drawings, 100% Complete
Three (3) set of Specifications, 100% Complete
• 100% Completion Estimate of Probable Construction Cost
D. Final Design Submittal
• Project Final Documents including drawings on 22" x 34" sheets and project specifications
on 8-1/2" x 11" sheets for use and distribution by CITY. Twenty (20) sets of project
documents, final completion.
• Completed permit application and exhibits for signatures by CITY officials (permit fees to
be paid by ENGINEER). Signed and sealed drawings for permit submittal shall be
provided by ENGINEER.
• Specific bid information including a line item unit breakdown for the project for use by the
CITY's Purchasing Division for preparation of bid documents.
Page 16 of 17
Final estimate of probable construction cost.
BIDDING SERVICES (Part of Design Phase)
A. Pre -Bid.
Addenda, as required to the CITY and/or Contractors.
1!=WOM1 4
Bid Tabulation, 2 copies.
Recommendation of Award Letter. The CITY will award contract and issue Notice of
Award.
Y:\Documents\Tamarac\BD\WTP Clearwell Addition\Task Auth 09-04E.wpd
Page 17 of 17
CITY OF TAMARAC
WATER TREATMENT PLANT CLEARWELL ADDITION
TASK AUTHORIZATION NO. 09-04E
TABLE 5
I. DESIGN PHASE
DATE'. Apn110, 2009
PERSONNEL
a
n
a
11
'
a
TASK DESCRIPTION
o
u
al
Of
Project Adminisliatlon/Wrap ement
18
18
D2
Date Evaluation and Preliminary Design
16
24
2
D3
Preliminary Design Report
4
16
6
D4
Drawings and Engineering
24
40
472
D5
Specification Preparation
12
40
16
06
Permit Preparation Assistance
2
4
12
4
D7
Final Opinion of Probable ConsWction
4
4
Cost
DS
Bidding Assistance Services
4
2
4
D9
Bid Evaluation and Recommendation of
2
2
2
Award Assistance
010
Submit and Review(Quality Control)
6
8
D11
Regulatory Agency Permit fees
D12
Not Used
Total Hours
20
78
0
0
148
0
472
0
0
0
d$4,452.00
521600
$186.00
$0,00
$93.00
$87GO
$73.00
$87.00
$000
$7600
$10500
Rate
$4,32000
$14,508.00
$0,00
$0.00
$12,876.00
$0.00
$41.064.00
$0.00
$000
$0,00TOTAL
Sub -Total Labor
DESIGN PHASE LABOR $77,2
lI REIMBURSABLE EXPENSES DESIGN PHASE
EXPENSE
ITEM
EXPENSE TYPE
UNIT
No. OF UNITS
COST PER UNIT
TOTAL COST
1
REPRODUCTION
SET
20
$43.00
$86000
2
PHOTOCOPIES
EA
1,000
1$0.20
$200.00
PLOTTING
3
22 X 34(SET UP)
EA
82
$1500
$1,23000
11 X 17 (SET UP)
EA
164
$3 00
$492.00
TRAVEL
4
MILEAGE
MILE
210
$0,55
$116,60
TOLLS
EA
0
$0.00
$0.00
SUBCONSULTANTS
SURVEY
LS
1
$5500,00
$5,500.00
ELECTRICAL
LS
1
$38,60000
$38.500,00
STRUCTURAL
LS
1
$8,250.00
$8,250,00
5
GEOTECHNICAL
LS
1
$5,005.00
$5,005.00
HYDROGEOLOGIC
LS
0
$0.00
$0.00
PERMIT FEES
LS
1
$42000
$42000
HVAC
LS
1
$1,650.00
$1,650.00
TOTAL DESIGN PHASE EXPENSES $81 802.50
GRAND TOTAL $139,000.00
Y:N0CIIMEN1e\TamaracW43 C1 Deslin scope