HomeMy WebLinkAboutItem 23 - Dove Elevated Storage Tank CC ITEM #23
MEMO TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
FROM: BRUNO RUMBELOW, CITY MANAGER
MEETING DATE: JUNE 4, 2013
SUBJECT: ENGINEERING DESIGN AND CONSTRUCTION SERVICES
CONTRACT — DOVE ELEVATED STORAGE TANK
RECOMMENDATION:
City Council consider approving an Engineering Design and Construction as
Services Contract with DeltaTek Engineering in the amount of $49,340.00 plus 10%
contingency, forte design and inspection of structural repairs and the interior and
exterior painting forte support column and tank of the Dove Elevated Storage Tank,
authorize the City Manager to execute said contract, and take any necessary action.
FUNDING:
Funds are available in the Utility Fund.
BACKGROUND:
Dove Elevated Storage Facility was built in 1973 and has a tank storage capacity of
750,000 gallons of water. The support base and the elevated tank are made of steel
which requires painting. This to was last emptied and painted during the low water
demand period between the fall of 1993 and spring of 11994. The City logos were
touched up in 2008.
Painting systems used on storage tanks typically last 12 to 15 years and the life of said
paint systems can be extended with minor maintenance. All interiors of tanks are
inspected annually by a certified inspector with the use of scuba diving gear checking
the paint system for pitting and deterioration. Last year, staff had DeltaTek perform a
full inspection of this tank and it was determined that it needed repainting and some
structural repairs performed on the column due to corrosion.
Modifications are required to be made to the tank to meet various regulatory agency
regulations (TCEQ, AWWA, ANSI, OSHA) as well as improve operational deficiencies.
These modifications include replacing the roof vent with a new vandal resistant vent,
replacing the insect shield with one that will also shield from dust and other particulate
matter and installing a new roof safety rail as well as anti-fall railing on all access
ladders.
CC ITEM #23
DeltaTek Engineering is a company that specializes in design and construction services
for ground and elevated water storage tanks. Staff has relied upon the to provide
construction assessment, design and construction inspection services tote it since
2001. They have a thorough knowledge of our water storage network.
to recommends approval.
JR/SD
C ITEM
May 28,20B
Mr. Stan Laster
Director of Public Works
City of Grapevine
200 South Main St.
Grapevine, Texas 76051
Reference: Dove 0.750 MG Steel Fluted Column Elevated Water Storage Facility
Repainting,Renovation, corrosion, and Structural Repairs
Engineering Services Compensation
Dear Mr.Laster:
Deltatek Engineering has reviewed the information and breakdown of our previously submitted
Engineering proposal associated with this project. Additionally, we revisited our 2003 proposal
associated with repainting and renovation of the Mustang Elevated Storage Tank. For this
project, we have now provided a breakdown by task for each items in the Design Phase and
Construction Phase associated with this renovation. These tasks and scope of work items are
outlined in attached Exhibit A.
Summary of Costs
Engineering Flans& Specifications $29,340.00
Construction Admin. &QA $20,000.00
Total $49,340.0 Q
Work not included in this revised scope would be considered additional services and will be
invoiced per our standard fee schedule and must be authorized by the City.
Should you have any questions,please call or email.
Sincerely,
DELTATEK ENGINEERING
oc W. Ezz .E.
Attachments:Exhibit A
Cc: Scott Dyer,P.E.
2211 Texas Drive Irving,Texas 75062
Firm Registration No.F-4419
972-255-95001 Fax 972-255-7500
Email:bn a deltateken .cam
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Exhibit A CC ITEM #23
GENERAL SCOPE OF SERVICES
REPAINTING AND RENOVATION
Dove Elevated Storage Facility
City of Grapevine, Texas
May 2 ,2013
PROJECT SITE DESCRIPTION
The Dove Elevated Storage Facility is 0.750 MG and constructed of steel fluted column, steel bowl, and supported
on a concrete foundation. This facility is located in a residential area and share grounds with a City public park
facilities. There are number of wireless entities utilizing this facility for antennas and house their equipment
underground in several vaults in the close proximity of this storage tank.
Part 1.0—D esin Phase
Task 1.01 -- Deltatek Engineering shall prepare renovation contract documents in accordance with the on-site
observation and evaluation of the referenced storage facility. The scope of work for Part 1.0,Design Phase,
includes plans and specifications to perform improvements required to upgrade this facility to the latest
requirements of AWWA 13100, TCEQ, OSHA, and ANSI. Deltatek shall conduct a pre-design site and
facility assessment to indentify items requiring removal, replacement, and improvements. Renovation shall
include repainting of interior/exterior in accordance with the recommendation of AWWA for Potable Water
Storage Facilities, review of available maintenance reports by the City or others. Provisions will be
included for full containment per TCEQ requirements. As a part of this renovation, the interior dry will be
repainted which requires removal of the existing condensate ceiling and associated piping. Deltatek
recommends to removal of the condensate ceiling permanently which is located above the existing
mezzanine floor.
Task 1.02 -- Design of modifications for AWWA, TCEQ, ANSI, OSHA, Sanitary, and Operational Deficiencies
including:
A. The roof vent shall be replaced with a new vandal resistant vent.
B. The roof vent shall be equipped with stainless steel 16 mesh insect screen and shall be shielded from
wind-propelled dust and particulate matter.
C. A new roof safety rail to meet the OSHA requirements to include railing with minimum height of 42
inches with a 4"kick plate shall be installed.
D. All access ladder shall be equipped with an approved anti-fall rail.
E. Any additional items identified in Task 1.01.
Task 1.03 -- Preparation of Construction Documents: Deltatek Engineering shall prepare documents for removal
of coatings including any abatement of lead-based coatings in accordance with regulatory agencies. The
design documents shall include interior/exterior surface preparation and repainting of all steel surfaces. In
accordance with TCEQ requirements, a mechanical abrasive blasting machine will be required to prevent
abrasive blast media in surrounding areas (only on bowl). A dust collector will be required to collect all
dust from tank interior into a f i l t e r system. The filter will be handled a s h azardous waste material and will
be disposed of properly with a manifest of disposal site- This includes all waste abrasive blast media
resulted from interior and exterior blast cleaning. The grounds underneath tank bowl will be covered to
protect soils from possible contamination with lead-based paints. The tank interior wet will be prepared in
accordance with SSPC SP 10 Near White Blast and will receive hydro-zinc primer and coated with an NSF-
approved epoxy. The tank exterior will be prepared per SSPC SP6 Commercial Blast Cleaning and coated
with epoxy/urethane system. The tank interior dry will only receive SSPC SP 6 for surface preparation and
will be coated with epoxy. All spaces between rafters and roof plates will be wedged/jacked for proper
blast cleaning and repainting. This would prevent nuisance rust bleed over the rafters. All interior antenna
cables will require removal by various wireless entities prior to renovation. Remounting of all cables and
brackets will be conducted by wireless entities upon completion of this renovation. Additionally, the
exterior antenna brackets will require repainting to match the tank exterior. The cost of this task will be
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observed by the owners of wireless entities. CC ITEM #23
Task 1.04 -- Estimate of Probable Cost of Construction: After completing final plans and specifications, Deltatek
will provide an opinion of probable cost for the project in accordance with final documents.
Task 1.05 -- Production of Advertising Documents: At the conclusion of the design,Deltatek will provide the
City five(5)bound sets of advertising documents(drawings and specifications)for internal use and display
to prospective bidders. The plans in the bid documents are folded I I"x17sheets. Deltatek Engineering will
distribute Renovation Documents as requested by prospective bidders and maintain an up-to-date plan
holders list. A notice to bidders will be issued to potential bidders and advertising agencies such as Dodge
Report and North Texas Construction Record(NTXCR).
Part 2.0-Project Construction Administration
Task 2.01 -- Deltatek Engineering shall assist the City of Grapevine in project advertisement during bidding.
Deltatek will provide response to questions during the bidding phase. Deltatek shall attend any pre-bid
conference and prepare addendum(s), if required, during advertisement.
A. Deltatek will review bids for conformance to the bid documents and provide recommendations for
award.
B. Coordination with wireless providers.
Task 2.02 -- Quality Assurance Observation: Deltatek Engineering shall provide an on-site Field Technician(as
required by project activities and not a fall time resident)to perform observation of the work in progress to
assist in determining that the project is proceeding in accordance with the contract documents and that the
completed work will conform to the contract requirements. Deltatek will not assume responsibility for
contractor's performance nor on time completion of this project. On-site representative during renovation
will review the work for the following items:
A. Steel Repairs and Replacement - Deltatek Engineering shall provide an on-site field representative to
review steel structural member replacement, corrosion repairs, and installation of roof hatches, vents,
ladders- anti-fall devices, side man ways access tube entrance. and miscellaneous improvements
This
includes pedestal gravity ventilation insect screens.
B. Deltatek will review and comment on shop drawings, equipment diagrams, material samples, test
results, and other data that the contractor submits as required by the contract documents. Deltatek will
furnish the City record copies of shop drawings for their files.
C. Deltatek will review the monthly progress payment requests, submit payment recommendations, and
assist in the preparation of change orders to the contract documents.
D. Deltatek will conduct final warranty observation jointly with representatives of the City and submit a
written report recommending final settlement of the contract.
E. Protective Coating Systems -Deltatek Engineering shall provide on-site observation to perform quality
assurance for surface preparation and paint application of the tank interior/exterior and perform all
required testing in order to comply with manufacture's data sheet as well as specifications. Tests
include surface profile measurements, check ambient temperature, humidity, dew point, and metal
substrate surfaces prior to paint application. Measure wet/dry film thickness and conduct Holiday
Detection only in the tank interior submerged surfaces.
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2.03 Project Schedule:
CC ITEM
Tasks Schedule
Preliminary Plans and Specifications 6 weeks
Final Plans and Specifications 2 weeks
Review 2 weeks
Advertisement 4 weeks
Award 4 weeks
Work Order Issued 2 weeks
Work Complete 18 weeks
Total 38 weeks
DOVE ELEVATED STORAGE FACILITY
DESIGN PHASE
Task 1.01
Senior Engineer 4 hrs $185 /hr = $ 740.00
Engineer P.E. 4 hrs @ $165 /hr = $ 660.00
Technician 6 hrs @ $90 /hr = $ 540.00
CAD Drafting 16 hrs @ $70 /hr = $ 1,120.00
Clerical/Admin 8 hrs @ $50 /hr — $ 400.00
Misc. Expenses: Paint Chip Analysis,
Soil Lead Background Analysis &TCLP
For Waste Disposal&Travel = $ 1,800.00
Sub-T c4 al $ 5,260.000
Task 1.02
Senior En ineer 4 hrs @ $185 /hr = $ 740.00
Engineer P.E. 6 hrs $165 /hr — $ 990.00
Technician 8 hrs $90 /hr — $ 720.00
CAD Drafting 24 hrs $70 /hr — $ 1,680.00
Clerical/Admin 8 hrs $50 /hr = $ 400.00
Misc. Expenses: Reproduction = $ 150.00
Sub-Total $ 4,680.00
Task 1.03
Senior Engineer 16 hrs @ $185 /hr = $ 2,960.00
Engineer F.E. 24 hrs @ $165 /hr = $ 3,960.00
Technician 24 hrs @ $90 /hr = $ 2,160.00
CAD Drafting 40 hrs @ $70 /hr = $ 2,800.00
Clerical/Admin 40 hrs $50 /hr _ $ 2,000.00
Misc. Expenses: Reproduction& Travel = $ 200.00
Sub-Total $ 14,080.00
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M #23
Task 1.04
Senior Engineer 4 hrs @ $185 /hr — $ 740.00
Engineer P.E. 4 hrs @ $165 /hr = $ 660.00
Technician 6 hrs @ $90 /hr = $ 540.00
Clerical/Admin 2 hrs $50 /hr = $ 100.00
Sub-Total $ 2,040.00
Task 1.05
Senior Engineer 2 hrs @ $185 /hr = $ 370.00
Engineer P.E. 2 hrs @ $165 /hr = $ 330.00
Technician 60 hrs @ $90 /hr = $ 720.00
CAD Drafting 60 hrs @ $70 /hr — $ 560.00
Clerical/Admin 40 hrs @ $50 /hr = $ 800.00
Expenses: Repro., Postage = $ 500.00
Sub-Total $ 3,280.00
Sub--Total Design Phase S 29,340.00:
CONSTRUCTION ADMINISTRATION PHASE
Task 2.01
Senior Engineer 2 hrs @ $185 /hr = $ 370.00
Engineer P.E. 2 hrs @ $165 /hr = $ 330.00
Technician 4 hrs @ $90 /hr = $ 360.00
Clerical/Admin 2 hrs $50 /hr _ $ 100.00
Expenses: Travel,_Repro.,_Postage = $ 110.00
Sub-Total $ 1,270.00
Task 2.02
Senior Engineer 8 hrs @ $185 /hr = $ 1,480.00
Engineer P.E. 12 hrs @ $165 /hr _ $ 1,980.00
Technician 140 hrs @ $90 /hr = $ 12,600.00
CAD Drafting(as-builts) 6 hrs @ $70 /hr = $ 420.00
Clerical/Admin 32 hrs @ $50 /hr = $ 1,600.00
Expenses: Travel, Repro., Postage = $ 650.00
Sub-Total $ 18,730.00
Sub-Total Design Phase S 21,000.00
Total Design and Construction Phase S 49,340.00
Summary of Cost Dove Elevated Stora,_e Tank
Opinion of probable cost $841,022.00
Renovation Documents $29,340.00
Quality Assurance $20,000.00
Total $890,362.00
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