Exh 8EAGENDA ITEM #8E
JANUARY 14, 2002
CITY OF ATLANTIC BEACH
CITY COMMISSION MEETING
STAFF REPORT
AGENDA TTEM: Professional Engineering Services - Redesign of Aerated Sludge Holding
Tank at Wastewater Treatment Plant No. 2
SUBMITTED BY: Donna Kaluzniak, CEP, Utility Director
DATE: January 3, 2002
BACKGROUND: During expansion of Wastewater Treatment Plant No. 2, severe irreparable
damage was found on the existing sludge holding tank. The City Commission authorized Gannett
Fleming to design a new 186,000-gallon aerated storage tank to replace the two existing units.
Design of the new tank was nearly complete when Camp, Dresser & McKee (CDM) was
contracted to complete the NPDES Permit Studies, to include a report on solids handling methods
for both wastewater treatment facilities. Permitting and construction of the new tank was placed
on hold in the event CDM's findings required process changes that might affect the sludge tank
design.
At present, sludge from Wastewater Treatment Plant No. 2 is held in aerated sludge holding tanks
until its transport by city staff in tanker trucks to Wastewater Treatment Plant No. 1. At
Wastewater Treatment Plant No. 1, sludge from both facilities is treated and dewatered prior to
disposal at the landfill. CDM's recommendation was to continue use of the drying beds at
Wastewater Treatment Plant No. 1 and add a thickening device at Wastewater Treatment Plant
No. 2 to reduce the future size requirement for sludge holding tanks and decrease the number of
sludge loads transported between the two treatment facilities. Thickening the sludge will increase
the amount of solids and reduce the amount of liquid being hauled, resulting in fewer trips
between plants. Also, as plant flows increase, having thicker solids will reduce a need for
increased tank sizes.
Staff met with Gannett Fleming to discuss redesign of the sludge holding tank. After review; staff
requested a proposal to design a 90,000 gallon tank with piping for a future second tank and.
thickening/dewatering device. A dual tank configuration will allow downtime for preventive or
corrective maintenance for each unit.
Gannett Fleming will develop and modify the previous design to include relocation and
reconfiguration of tank, piping, and walkways; recalculation of aeration demand, hydraulics,
diffuser grid; electrical power requirements and structural foundation; addition of fencing and
landscaping details.. They will also incorporate the plant roadway design (completed by Connelly
& Wicker) to improve flooding conditions at the treatment facility into tbe bid documents. Also
included will be permitting, bidding and construction engineering services, topographic survey and
geotechnical work.
AGENDA ITEM #8E
JANUARY 14, 2002
The total proposed engineering fee is $30,066. Design, permitting and bidding costs aze $17,998
and represent 7% of the estimated construction cost for the project: Construction engineering
costs, including preconstruction meeting, shop drawing review, field visits, pay request review,
project startup and certification totals $8218 or 3% of the estimated construction cost. ` The
remaining $3850 constitutes a subcontractor allowance for the geotechnical, survey and
landscaping work.
BUDGET: A total of $275,000 was budgeted for this project under the Sewer Treatment
Fund in account number 410-5508-535-6300.
RECOMMENDATION: Awazd a contract to Gannett Fleming, Inc. in the amount of
$30,066 for redesign and construction engineering services for the Aerated Sludge Holding Tank
at Wastewater Treatment Plant No. 2, and authorize the City Manager to sign the contract.
ATTACHMENTS: 1. Proposal from Gannett Fleming dated December 10, 2001.
REVIEWED BY CITY MANAGER:
AGENDA ITEM #SE
JANUARY 14, 2002
Gannett F~emtn GANNETT PEENING, INC.
g Suite 150
7751 Belfort Parkway
Jacksonville, F132256
December 10, 2001 Office: (904) 332-9400
Fax: (904) 332-9337
www.gannettfleming.com
Ms. Donna Kaluzniak
Department of Public Works
City of Atlantic Beach
1200 Sandpiper Lane
Atlantic Beach, FL 32233-4318
Re: Waste Sludge Tank Design
Buccaneer Wastewater Treatment Plant
Atlantic Beach, Florida
Dear Ms. Kaluzinak:
Pursuant to your request and our discussions, Gannett Fleming is pleased to provide the
attached Scope of Work and Manhour and Fee Estimate for the referenced project. It is
our understanding that this will work will be authorized under the current contract
between Gannett Fleming and the City of Atlantic Beach for the design and modifications
to the Buccaneer Wastewater Treatment Plant.
If you have any questions or comments, please do not hesitate to contact me.
Sincer~ely,A
Thomas C. Hawk, P.E.
Manager-Municipal Engineering Services
Enclosure
Ca Mr. Robert S. Kosoy, P.E. w/encl
Mr. John Dougherty, P.E. w/encl
A Tradition of Excellence
Gannett Fleming
AGENDA ITEM #8E
JANUARY 14; 2002
Scope of Work
Waste Sludge Tank Design
Buccaneer Wastewater Treatment Plant
City of Atlantic Beach, Florida.
December 10, 2001
Purpose
The purpose of the Waste Sludge Tank Design is to provide a design fora 90,000-gallon
storage tank for sludge wasted from the Buccaneer Wastewater Treatment Plant. The
waste sludge will have a concentration ranging from 0.75% to 3.00% solids. The design
will provide for a future addition of a second waste sludge tank and sludge dewatering
facilities. Design elements will be limited to the following:
90,000-gallon glass fused steel waste sludge tank
Decant piping
Access stairs and tank wallcway
Course bubble diffused aeration system and piping
Positive displacement blower (1) with sound attenuation enclosure
Electrical and instrumentation for blower operation and level sensors
Site piping from existing sludge holding tanks to new tanks
Fencing around the perimeter of the City's property west of Regulus Drive
Landscaping buffer between new tank(s) and adjacent property owners
Incorporation of roadway design previously completed by Connelly -Wicker into bid
package without any alterations to those plans
The proposed design will modify a previous design predicated upon an 186,000-gallon
waste sludge tank. Due to the change in the tank capacity and location, design
modifications will address tank foundation, location, aeration/mixing requirements,
diffuser design and arrangement, blower design points and selection, electrical
requirements of revised blower, etc. The design will also incorporate a roadway design
performed by others and allow for the bidding and authorization of both the roadway and.
waste sludge tank as one project.
Scope
Gannett Fleming will develop and/or modify design documents previously
prepazed for the 186,000-gallon sludge storage tank. The tankage design will
incorporate a 90,000-gallon glass fused steel tank with decant piping, access stairs
and walkway, foundation, fill and drain piping, and level indication
instrumentation. Aeration system requirements predicated on tank mixing will be
reviewed and coazse bubble diffuser and air headers will be designed for the new
tank size. Air main hydraulics will be performed to confirm air main size
selection and for selection of the positive displacement blower. Electrical
M:\GENERAL~BIISDEV\ProposaLv\City afAtlenlic Bcah\iank IXSign,doc
AGENDA ITEM #8E
JANUARY 14, 2002
Gannet[ Fleming
modifications required for the selected blower will be incorporated in the design
documents.
2. The design of Regulus Drive performed by Connelly -Wicker will be
incorporated in the design drawings for bidding purposes only. The sludge tank
project and Regulus Drive project will be combined for bidding and contracting
purposes via the project scope, invitation, instruction to bidders, and form of bid.
Each project will stand alone from the standpoint of contract documents to allow
design responsibilities to remain with the respective design engineer.
3. Site improvements including perimeter fencing and landscaping to buffer adjacent
properties will be included in the contract documents.
4. Gannett Fleming will prepaze an opinion of probable cost.
5. A topographic survey of the project construction site (Regulus Drive and west of
Regulus Drive will be performed.)
6. A standard penetration test boring to 50 feet will be performed to provide a
determination of allowable soil loading and foundation preparation
recommendations.
7. Gannett Fleming will prepare the FDEP permit application for the construction of
the described wastewater facility improvements. This permit will be limited to
the new tankage and piping, and future tankage if applicable. (Without design
pazameters and documents, permitting of sludge thickening and/or dewatering
will not be possible.)
8. Gannett Fleming will provide bidding services including attendance at pre-bid
meeting, response to RFI's, issuance of addenda, and review and tabulation of bid
results.
9. Gannett Fleming will provide the construction engineering services including
attendance of preconstruction meeting, up to four field visits to determine
compliance with contract documents and to resolve any field issues, review shop
drawing submittals, review pay requests, participate and attend project start-up,
prepaze fmal project certification. (Gannett Fleming will not provide full time.
resident inspection under this scope of work.)
City Provided Services /Information
The City of Atlantic Beach will provide the following information/data:
M:\GENERALIBUSDEV~Yroposatv\Ciry ofAtlamic Brnch\Tvik lksign.doc
AGENDA ITEM #8E
JANUARY 14, 2002
Gannett Fleming
1. Buccaneer WWTP operational data including flows, waste sludge volumes, waste
sludge concentration, thickened sludge concentrations, waste sludge hauled to
Atlantic Beach WWTP.
2. AutoCADD drawing files and electronic specification files for the roadway
project as designed by Connelly -Wicker.
3. Boundary survey of City property west of Regulus Drive.
Work Specifically Excluded
Gannett Fleming specifically excludes the following items from inclusion:
1. Tree removal permitting.
2. Agency permitting fees.
3. Public meeting for permitting and approval.
4. Design and permitting of surface water treatment.
Deliverables
1. Gannett Fleming will provide one set of reproducibles of contract drawings for
the City's use in obtaining bids from the qualified contractors.
2. Gannett Fleming will provide FDEP permit applications and supporting
documentation for execution and submittal to FDEP for construction permits.
Schedule
The time of completion of the Waste Sludge Tank Design will be 9Q calendaz days
following receipt of notice to proceed.
Compensation
.Compensation for the design, permitting, bidding phase services and construction phase
engineering will be per the attached Manhour and Fee Estimate. Subcontractor
allowances are budgets and will compensated at actual cost of services without mazkup.
M\GENBRAL\BUSDBV\Peopoeaty\Ciry ofAtlanric Beech\Tank DCVign.dac
AGENDA ITEM #8E
JANUARY 14, 2002
Gannett Fleming
Manhour and Fee Estimate
Waste Sludge Tank Design
Buccaneer Wastewater Treatment Plant
Daeember 10, 2001
Sr.Prcj. Manager Sr. Engr.
$730.00 $110.00
A Contract Drawings
t Site Plan MOdifcaticns
a Incorporate boundary Survey
b. Incorporate TOpographk Survey
c. Irworpo2w New Roadway Alignment
d. Relocate Tank antl Piping 2
e. Add Secudly Fencing
t Atltl landscaping
2 Waste Sludge Storage Tank
a. Check antl Matlify Slnztwal Fountlation
b. Check and Modify Walkway
c. Revise Aaration/Mizing System
I. AaraBan Damantl 2
ii. Aeration Hyd2uliu 4
'~ iii Blower Seledbn 4
iv. Diffuser Grid MatlCu:almn 4
v. blower Electrical Power Mad'dmaticns
3 Ferxang Details
4 Landscaping Details
5 SpecificatioNBitl Documents 24
6 FDEP Pertnk 12
7 bidding Services
a. Response to RFrs B
D. Pre Bid Meeting 4
c Review 8 TaDUlation al bids 4
b Cansbuctian Engineering Services
a. PreeonsWCtion Meeting 4
b. Field Visit 20
o Shop Drawing Review 8
d. Pay Request Review 6
a.. Proled Startup 12
f. Project CenMlcation 4
seDwtae 122
8. Subcontracwr Albwancas
1
[ Topo9raphk Survey (HPllantl)
2 Geaterhnical-SPTB Foundation Recommentlatbn (Erie)
3 LaMaeaping Design (Jay Devine)
Subtotal:
C. Other Direct Raimdusbles
.Copying
Ploffing
Reproduction
MainirglPgstage
Subtotal ODC
Project TClal:
e
b
8
q
2
2
2
4
4
a2
Caad Clenwl Estimate Fee
$48.00 $37.00
4 $192.00
4 $192.00
8 $384.00
8 $6x4.00
2 $%.00
2 $96.00
8 $1,264.00
8 $1.264.00.
$260.00
$520.00
$520.00
8 $904.00
$880.00
2 $96.00
2 $%.00
24 $4,448.00
4 8 $2,048.00
4 $7,408:00
4 $868.00
4 $888.00
$520.00
52.600.00
8 $1,776.00 '
2 $854.00
2 52,074.00
2 5594.00
so 5a $2s,safi.od
$2,000.00
$7,700.00
$750.00
$5,850.00
Number SL9 d ^
3aD sneer $o.to
20 Sheet $4.00
200 Sheet SZ.00
7 lS $200.00
Total
530.00
$80.00
$400,00
$200.00
3770.00 $710.00
- $30.066.00