HomeMy WebLinkAbout09- Liquid Engineering, In-service Sediment removal and assessment04/08/2009 13:14 4066510120 LIQUID ENGINEERING PAGE 02/04
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M146/0104
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Scope of Work - In-Service Sediment Removal 8 Assessment
This Potable Water System Proposal is made this date, by and between City of Bozeman of the state of Montana,
(hereinafter "Client") and Liquid Engineering Corporation, of Billings, MT, (hereinafter "LEC"). LEC will provide Ail
labor, specialty equipment and insurance to professionally evaluate your facilities.
In-Service Assessment
Interior and exterior assessments will review structural, sanitary, safety, security and any installed coating conditions.
Reporting will be provided based on water tank inspection ceteris, referencing applicable OSHA. EPA. AWWA,
TCEQ and NFPA requirements. Minimum items examined will include ladders, shelf, roof, vent, manways, welds,
seams, foundation. anchors, safety systems, hatches, external overflow and plumbing.
Underwater interior video documentation will be completed with real-time closed circuit high-resolution color
underwater video equipment. All pertinent findings will be recorded on DVD format (including dive maintenance
technician's findings and narrative summary),
Services will include detailed interior video documentation of the potable water tank(s) / Clearwell(s) as described on
page two (2).
Underwa er O_Derations -All Dive Maintenance TeohniCians and associated In-tank equipment are fully disinfected in
accordance with AWWA Standard C652-02. All system entries will be conducted in accordance with applicable
OSHA regulations peRaining to Diving and Confined Space; including 1910,401 thru 1910.441, Specialty equipment
may include but is not limited to; appropriate OSHA climbing and personal fall protection, AWWA and ADC approved
commercial diving equipment dedicated to in-service potable water operations.
In-Service Cleaning
NOTE: For proper documentation of the interior floor, LEC recommends removal of sediment prior to assessment,
In-Service removal of accumulated bottom sediment is accomplished using LEC's proprietary HydroDyneTM cleaning
equipment, Normal cleaning prices provided include removal of sediment accumulations up to the first three inches
(3") in depth or cubic yards given on reservoir information breakout.' Material that cannot be vacuumed with LEC's
HydroDyneT" (e.g., concrete, gravel, misc. materials or compact sediment requiring the use of a hand nozzle), is
Considered debris. Cleaning includes up to one hour of debris removal per tank at no additional charge,Z
For normal cleaning operations client shall make available an approved discharge location (sewer, cofferdam, etc,)
within 300' of the reservoir access hatch. (Site-specific discharge recommendations can be provided by LEC upon
request).
Detlverable - Prforitlzation Schedule
The deliverable provided on site will consist of LEC's checklists, summary recommendations and Immediate Needs
Assessmentr"^, which documents discrepancies that require urgent action, and is supplemented by the Interior DVD
documentation,
If requested, within approximately 30 to 45 days of completion of the on site work, LEC's bound report will be
delivered. This additional documentation will include a comprehensive listing of all discrepancies found, with
corresponding photos and recommendations provided by LEC's specialists. Any cost estimates provided are
estimated based on services provided by LEC and its specialists, If requested, reports can be signed and stamped
by a licensed professional engineer. Costs for this bound report are given on page 3, if necessary, reports can be
Signed and Stamped by a licensed professional engineer for an additional charge.
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April 27, 2009
Mr Rick Moroney
City of Bozeman
P.O. Box 1230
Bozeman, MT 59771
RE: Job Confirmation Information
Dear Mr Moroney:
First of all I would like to thank you for choosing Liquid Engineering (LEC) for your water system work. We truly
appreciate the opportunity to work with you and your staff. In order to assist LEC in completing your job, i would
like to provide you with the following schedulingand coordination information.
Our scheduling department will be contacting you to begin preparations for the crew's summer arrival. To eliminate
additional mobilization charges LEC crews travel nationwide, year-round and will be completing your work in one
of our scheduled routes (unless other arrangements are made).
As we continue to refine a specific arrival date, our schedulers will remain in contact with you until the job is
complete. Please keep in mind, that our operations personnel often discover problems which were unexpected by
other clients, and schedule slippage does occur; your understanding is appreciated.
The following information is provided to ensure proper completion ofyour system work:
• Weekend Access: With confirmed access from our clients, LEC tries to schedule its crews 7 days a week.
Therefore, please inform our schedulers ifyour utility has difficulty with weekend availability. In most
cases it is not necessary for you to dedicate onsite support personnel to assist us in our work. Please let our
schedulers know if arrangements can be made in advance to keep our crews productive.
• Water Level: Please inform all personnel involved with this project that LEC is a diving contractor and
unless otherwise discussed, it will be necessary to have your tanks full and in normal operation. Cleanings
and Inspections are more efficient with the tank full. Be aware, certain LEC operations may present a
problem with the water level 15-18 feet below the top access hatch. Please keep us productive by
confirming a full tank prior to arrival -and avoid potential standby charges for events beyond Liquid
Engineering's control.
• Reiiioved `dJater ~ Matenals: 1n the evert we are cleaning your tank, please :d;,ntify an area ~:v":ei2 Clio Grew
may discharge the vacuumed water and materials. Depending on the type of accumulated sediment, in most
cases the discharge resembles "dirty water" and there is typically no heavy residual sludge left to dispose of.
Liquid Engineering is aware of most state & local discharge requirements, please let us know in advance if
there are any specific discharge concerns for your particular utility.
We lookforward to arrival and completion ofyour project. Should you have any additional questions please feel
free to give me a call at 800-438-2187. In the meantime, I would like to thank you again for the opportunity to
work with you.
Sincerely,
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~a 1 ay Ha~e - perat ons Coordinator
F:;ist AirPior( Road • 1?O. Rox 8U23U ftilLngs, :~1T 59 1 08-02 30 ~ SOU-438-2187 • 4U6-6S I -OI CIS • Pax: 406-651-0120
IccmailC4'IiquidenKinceringcom • www.liquidenginecnng.win
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