10a. Energy Audit Contract.I NDUM
MEMORA
CITY OF /�-=`
CHANHASSEN
690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
(612) 937 -1900 • FAX (612) 937 -5739
TO: Mayor and City Council
FROM: Don Ashworth, City Manager
DATE: August 1, 1996
SUBJ: Contract with Bissonett Engineering, Energy Audits
I am extremely pleased with how well the energy program for city hall has been going, i.e:
• Initial Stage: Mr. Bissonett identified items which should be retrofitted and produce cost
savings to pay for themselves within 3 -5 years; and
• Bidding: Specifications were developed and all bids came in under the engineer's estimate;
and
• Installation: We are more than halfway through the actual installation process.
Confirmations continue to occur reflecting that many of the items that are being replaced
would have required replacement during the next 3 -5 years. When seen in this light, the
expenditure truly represents "taxpayer dollar savings "; and
• Reimbursement: The reimbursement process from NSP has been extraordinarily simple.
As the energy reduction program ceases in July 1997, I have requested Bissonett Engineering to
review other facilities /equipment with the intent of looking at each as potential candidates for the
NSP program. Attached please find the report from Bissonett Engineering identifying potential
savings (actual savings would not be known until an actual energy audit was conducted).
Hopefully we can discuss this item Monday evening. I personally would like to move forward
with all of them, but the council may prefer a phased approach. Again, hopefully we can discuss
this Monday evening.
gAmgr \bissonett.doc
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JUN 2 j '
Eden Engineering, Inc.
CITY OF CHANHASSEN
Mr. Don Ashworth June 7, 1996
City of Chanhassen
690 Coulter Drive '
Chanhassen, MN 55317
A preliminary financial analysis of the NSP Local Government Program for the City of Chanhassen indicates substantial
savings on electric and natural gas bills, significant rebates from NSP, some interest -free financing and also partial
reimbursement of engineering fees for the public works building, fire station, wells and lift stations.
The NSP Local Government Program provides funding to purchase energy efficient equipment for existing facilities. NSP
will rebate $.05 per kilowatt -hour saved with the installation of new lighting, air conditioning, motors and drives. In
addition, NSP will reimburse the city 100% of engineering fees to perform energy audits, design systems and write
specifications for qualifying equipment. Interest -free loans are available and payments are made on your electric bills.
The payments are made equal to your electric savings so that your monthly electric bills do not increase while the loan is
being paid off. In effect, the savings on your electric bills pay for the new equipment and your operating costs stay the
same until the loan is paid, thereby making fiscal budgeting unnecessary to purchase the equipment.
During the initial survey of your facilities, many energy savings measures were identified. These measures will be
thoroughly investigated during the energy audit phase of the program. For the fire station and public works building, it is
recommended that the T12 fluorescent lighting be converted to a T8 system, incandescent lamps replaced with compact
fluorescent lamps, exit signs retrofitted with LED kits, occupancy sensors be installed to control lighting and
programmable thermostats for temperature control. In addition, for the public works building, two new energy efficient
central air conditioners should be installed to replace inefficient window units.
For wells #2, 4 and 6, new high efficiency motors could be installed to achieve system reliability and significant energy
savings. Variable frequency drives on well motors probably will have payback periods of over 10 years, so they are not
included in the proposed energy audits. For the lift stations, all motors are submersible and there are no applications for
high efficiency motors or drives. However, there may be an application for standby electrical generation, load shedding
and savings by switching to the NSP peak control rates which can be thoroughly investigated, but NSP does reimburse
fees or finance generator costs.
The preliminary estimate of natural gas and electricity savings for the City of Chanhassen are as follows:
It is expected that the actual costs and savings will be close to the numbers shown above, but will be more precisely
determined during the energy audits and bid process for installation of energy saving equipment. If the City of
Chanhassen decides to proceed with the energy retrofits, NSP will reimburse the costs as shown above. If the City
decides to stop the process after energy audits have been completed, it will owe 60% of the engineering fees. The
remaining 40% is due after the bid specifications are written and the bid process is complete.
Sincerely, /' {
Thomas L. Bissonett, P.E.
Eden Engineering, Inc. - 9125 Flyway Circle - Eden Prairie, MN 55347 - (612) 944 -7995
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Fire Station
Public Works
Wells
Lift Stations
Total
Annual cost savings:
$1,300
$1,100
$1,600
$10,000
$14,000
Retrofit costs:
$10,100
$7,600
$9,500
$50,000
$77,200
NSP rebates:
$600
$700
$1,300
$0
$2,600
Net installed costs:
$9,500
$6,900
$8,200
$50,000
$74,600
Interest -free loan:
$9,100
$6,300
$8,200
$0
$23,600
Engineering fees:
$1,500
$1,100
$1,400
$1,800
$5,800
NSP reimbursements:
$1,500
$1,100
$1,400
$0
$4,000
Payback (years):
7.3
6.3
5.1
5.0
5.3
It is expected that the actual costs and savings will be close to the numbers shown above, but will be more precisely
determined during the energy audits and bid process for installation of energy saving equipment. If the City of
Chanhassen decides to proceed with the energy retrofits, NSP will reimburse the costs as shown above. If the City
decides to stop the process after energy audits have been completed, it will owe 60% of the engineering fees. The
remaining 40% is due after the bid specifications are written and the bid process is complete.
Sincerely, /' {
Thomas L. Bissonett, P.E.
Eden Engineering, Inc. - 9125 Flyway Circle - Eden Prairie, MN 55347 - (612) 944 -7995
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RECEI VE
JUN 12 REC,0
- REQUEST FOR QUOTATION CITY OF �H�„v ^M�JL,.
LIGHTING RETROFIT AND ELECTRICAL WIRING AT THE
CHANHASSEN CITY HALL
' The City of Chanhassen is requesting quotations from qualified lighting vendors and electrical
contractors to retrofit existing light fixtures at the Chanhassen City Hall, which includes the City
Offices, Library, Public Safety and the Senior Citizen's Center in Chanhassen, Minnesota.
' The bidder's quotation shall include separate pricing for labor, material, disposal and sales tax. Bids
must be received no later than Monday, June 17, 1996 at 4:00 P.M. The original shall be mailed to:
' Mr. Thomas L. Bissonett
Eden Engineering, Inc. J
9125 Flyway Circle, Suite 20i /
Eden Prairie, MN 55347 1
In addition, a copy of the quotation shall be mailed to:
' Mr. Don Ashworth
i y o an assen
690 Coulter Drive
' P.O.Box 147
Chanhassen, MN 55317
All questions regarding the project or requests to visit the jobsite shall be directed to Thomas (Tom)
Bissonett who can be reached during the business day at (612) 944 -7995.
The bidder's quotation shall be a not -to- exceed price based on the quantities of fixtures specified. if
for some reason, actual fixture quantities are less than specified, a credit per fixture shall be given,
based on the cost per fixture used in the bidder's quotation. If actual quantities are greater than
specifi ed, the additional costs shall be billed, based on the cost per fixture used in the bidder's
quotation. The bidder's submittal shall list all contractors and subcontractors who will be
performing the work.
' All contractors and subcontractors performing work on the premises of the City of Chanhassen shall
be licensed. All contractors and subcontractors must have insurance as shall protect the City of
Chanhassen and Eden Engineering, Inc. from claims under Worker's Compensation acts and from
' claims for damages because of bodily injury, including death, and property damage which may in
any way arise out of or be in any remote or proximate manner connected with the performance of the
Contract, whether such claim arises out of the act or failure to act of the contractor or the Citv of
' Chanhassen or Eden Engineering, Inc., or of the direct delegee, appointee or employee of either of
them. The contractor and subcontractors shall have a minimum limit of liability for Worker's
Compensation in the amount of one million dollars ($1,000,000).
' In addition, the contractor and all subcontractors shall have Commercial Liability Insurance,
occurrence form, providing bodily injury, personal injury, and property damage liability with
combined single limits of not less than one million dollars ($1,000,000) and including Contractor's
' Protective, Products and Completed Operations, Broad Form Property Damage with no explosion,
collapse and underground (XCU) exclusions, and contractual liability coverage for the indemnity
agreement contained herein. Certificates of Insurance shall be filed with the City of Chanhassen
prior to commencement of services.
L
SCOPE OF WORK AND SPECIFICATIONS FOR LIGHTING RETROFIT AT
THE CHANHASSEN CITY HALL
The primary project is to retrofit the existing fluorescent light fixtures with a T8 system at the
Chanhassen City Hall, located at 690 Coulter Drive in Chanhassen, Minnesota. The contractor shall
provide all labor and material to complete the proposed retrofit projects. All work can be done
during normal business hours.
Project #1: Replace fluorescent lamps and ballasts with T8 lamps and LPO electronic ballasts. The
existin ceiling fluorescent light fixtures in the City Offices, Public Safety and Senior Center
measure two foot by four foot with deep cell parabolic lenses, recessed in an acoustical ceiling grid
about 9 feet above the finished floor. Each fixture has three, 40 watt Phillips fluorescent lamps, each
being F40T12, warm white, rapid start. Also, each fixture has two energy saver rapid start magnetic
ballasts, each being listed as Advance Mark III, 120 volt, 0.73 amp for two, 40 watt or 34 watt
lamps. In addition, there are some two foot by two foot parabolic fixtures, each with tk, U -lamps
and one ballast.
The existing ceiling fluorescent light fixtures in the Library measure two foot by four foot with
acrylic prismatic lenses, recessed in an acoustical ceiling grid about 10 feet above the finished floor.
Each fixture has four, 40 watt Phillips fluorescent lamps, each being F40T12, cool white, rapid start.
Also, each fixture has two energy saver rapid start magnetic ballasts, each being listed as Advance
Mark III, 120 volt, 0.73 amp for two, 40 watt or 34 watt lamps.
The retrofit involves utilizing the existing light fixtures, but replacing the fluorescent lamps and
ballasts inside the fixtures. The procedure requires removal of all T12 lamps and magnetic ballasts
along with legal disposal, recycling or reuse by a qualified contractor. All ballasts are marked "No
PCB's'', so they are not considered hazardous waste. Any disposal cost or cost credit for the lamps
and/or ballasts should be listed as a separate item in the bid along with a brief explanation of method
to be used (recycle, disposal, reuse, resale, etc.). In addition, each fixture shall be cleaned including
the back white reflector and the lens, both inside and outside.
New 32 watt, 120 volt, 48 inch long, rapid start, warm- white, bi -pin T8 fluorescent lamps and 120
Volt, rapid start low power output (LPO) electronic ballasts shall be installed in the existino, light
fixtures. Each fluorescent fixture shall have T8 lamps and one LPO electronic ballast installed
inside (replacing two magnetic ballasts and rewiring fixtures in some cases). All electronic ballasts
installed shall meet the requirements of the NSP Lighting Efficiency Program Approved Ballast List.
It is the bidder's responsibility to obtain a copy of this list of approved ballasts. All ballasts must
iilect the foiiuwing specifications:
1.
,.
4.
5.
6.
7.
S.
9.
10
All ballasts shall be electronic, U.L. listed, Class P.
Ballast sound levels shall not exceed Class A ambient noise levels.
Input current total harmonic content shall be below 20 %.
Ballast shall have a power factor of 90% of above.
All ballasts shall be 120 volt, rapid start, low power output (LPO) electronic capabl e
operating four T8 fluorescent lamps.
Ballast shall withstand line transients as defined in IEEE Publication 587, Category A,
Ballast shall meet the requirements of the Federal Communications Commission,I\ules
Regulations, Part 18.
of
and
Ballasts shall meet minimum efficacy standards of Public Law No. 100 -357, National
Appliance Energy Conservation Amendment of 1988.
Ballast shall have an average lamp current crest factor below 1.4:
All ballasts shall be warranted by the manufacturer for a minimum of five years.
r
The following is a summary of the T8 retrofit project at City Hall:
Quantity of existing fluorescent light fixtures to retrofit and clean: 2 44
' Existing quantity of F40T12 lamps to remove and recycle: 585
Existing quantity of FB40T12 lamps to remove and recycle: Ns
Existing quantity of magnetic ballasts to remove and disposal: 394
' Proposed quantity of 32 watt T8 fluorescent lamps to install: 585
Proposed quantity of 32 watt T8 U -lamps to install: Hs
Proposed quantity of LPO electronic ballasts to install and wire: 244
' If actual quantities vary from the scope of work, the contractor shall give a cost credit for each item
less than shown or a cost addition for each extra item more than indicated here. These cost credits or
debits shall be based upon the price per unit which the contractor has used in his bid proposal.
' In addition to the T8 fluorescent lighting retrofit for ceiling fixtures there
a is one other protects to be
installed by the contractor and are to be included in the bid as follows:
' Project #2: Retrofit 44 fluorescent fixtures located under shelves above desks in various offices for
the City and for Public Safety. These are one -lamp fixtures which are part of the systems furniture
' in the offices. Also, the Senior Center has a display case with two lamps. All lighting components
are to operate on the existing 120 volt electric service. All lamps and ballasts must meet the
specifications found in Project #1. The summary of Project #2 is as follows:
'
Quantity of F40T12 lamps to replace with 32 watt T8 lamps:
19
Quantity of F40T12 ballasts to replace with LPO electronic ballasts:
19
Quantity of F30T12 lamps to replace with 25 watt T8 lamps:
3
'
Quantity of F30T12 ballasts to replace with LPO electronic ballasts:
3
Quantity of F20T12 lamps to replace with 17 watt T8 lamps:
24
Quantity of F20T12 ballasts to replace with LPO electronic ballasts:
24
The following
information is requested for the Chanhassen City Hall lighting retrofit as part of the
bid and can be provided on the contractor's own bid form or proposal:
Contractor's Labor Price
Contractor's Material Price �-
Contractor's Disposal Price
'
Permit Costs $
State Sales Tax $
Total Bid Price (not to exceed) $ /_
List of Contractors and Subcontractors:
Manufacturer of T8 lamps: /.,
'
Manufacturer of electronic ballasts:
Expected start date of installation:
Expected completion date:
REQUEST FOR QUOTATION-
PACKAGED ROOFTOP HVAC INSTALLATION AT THE '
CHANHASSEN CITY HALL
The City of Chanhassen is requesting quotations from qualified mechanical contractors to provide a '
turnkey installation of two new rooftop heating, ventilating and air conditioning units, with
associated ductwork, controls and electrical wiring at the Chanhassen City Hall located at 690
Coulter Drive in Chanhassen, Minnesota. '
The bidder's quotation shall include separate pricing for design, labor, material, disposal and sales
tax. Bids must be received no later than Monday, June 17, 1996 at 4:00 P.M. The original shall be '
mailed to:
Mr. Thomas L. Bissonett '
Eden Engineering, Inc.
9125 Flyway Circle, Suite 201
Eden Prairie, MN 55347
In addition, a copy of the quotation shall be mailed to: '
Mr. Don Ashworth
City of Chanhassen
'
690 Coulter Drive
P.O.Box 147
'
Chanhassen, MN 55317
All questions regarding the project or requests to visit the site shall be directed to Thomas (Tom) '
Bissonett who can be reached during the business day at (612) 944 -7995.
The bidder's quotation shall be a not -to- exceed price based on the equipment specified including all
costs for design, labor, material, disposal and sales tax. The bidder's submittal shall list all '
contractors and subcontractors performing the work. Also, the bidder must identify any exceptions
to the specifications in his proposal.
All contractors and subcontractors performing work on the premises of the City of Chanhassen shall '
be licensed and bonded. All contractors and subcontractors must have insurance as shall protect the
City of Chanhassen and Eden Engineering, Inc. from claims under Worker's Compensation acts and I
from claims for damages because of bodily injury, including death, and property damage which may
in any way arise out of or be in any remote or proximate manner connected with the performance of
the Contract, whether such claim arises out of the act or failure to act of the contractor or the City of
Chanhassen or Eden Engineering, Inc., or of the direct delegee, appointee or employee of either of I
them. The contractor and subcontractors shall have a minimum limit of liability for Worker's
Compensation in the amount of one million dollars ($1,000,000).
In addition, the contractor and all subcontractors shall have Commercial Liability Insurance,
occurrence form, providing bodily injury, personal injury, and property damage liability with
combined single limits of not less than one million dollars ($1,000,000) and including Contractor's I
Protective, Products and Completed Operations, Broad Form Property Damage with no explosion,
collapse and underground (XCU) exclusions, and contractual liability coverage for the indemnity
agreement contained herein. Certificates of Insurance shall be filed with the City of Chanhassen '
prior to commencement of services.
' SCOPE OF WORK AND SPECIFICATIONS FOR HVAC INSTALLATION
AT THE CHANHASSEN CITY HALL
' The projects include installation of two new packaged rooftop HVAC units at the Chanhassen City
Hall, located at 690 Coulter Drive in Chanhassen, Minnesota. The contractor shall provide turnkey
services including design, drawings, permits, labor, material and disposal to complete the proposed
projects. All work can be done during normal business hours.
Upon award of contract, the contractor shall provide all mechanical drawings, shop drawings and
' permits to complete the installation of HVAC equipment. The contractor must provide all permits
including air conditioning, heating, piping, sheet metal and electrical. Copies of all mechanical
drawings shall be submitted to Eden Engineering, Inc. for approval prior to installation. All work
' shall be in compliance with local and state mechanical codes. All electrical work shall follow the
National Electric Code together with applicable state and city requirements. After installation, the
contractor shall provide on -site instruction to the owner designated personnel along with
' maintenance and operation manuals for the equipment.
Project A Replace an old 3 -1/2 ton packaged rooftop HVAC unit with anew high efficiency unit
The contractor shall provide a new packaged rooftop unit to replace the existing unit along with all
' permits, labor and material for complete installation. The existing packaged rooftop unit is a Magic
Chef and is about 20 years old. It serves the finance area, drafting and the city manager's office.
The contractor will be responsible for its removal from the site and legal disposal.
' The new unit shall be a Carrier or equal, have a sensible cooling capacity of at least 42,000 BTUH at
72° F dB and a heating capability of at least 80,000 BTUH output. The compressor shall be
t electrically driven and the contractor is responsible for electrical connections to the existing 208 volt
service. The unit shall have an EER rating of at least 10.0. The heating shall be natural gas and the
contractor is responsible for connections to the existing natural gas service. A minimum heating
efficiency of 80% is required. The new unit may not fit the existing roof curb, so the contractor shall
' provide the necessary roofing services for installation. The unit shall be wired to the existing or
replacement building thermostat for operation.
Project B Install a new 3 ton packaged rooftop HVAC unit for the lobby and wash rooms
The contractor shall provide a new packaged rooftop unit along with all drawings, permits, labor and
material for complete turnkey installation. This shall include necessary ductwork to provide supply
' and return air to the lobby and washrooms along with controls, electrical connections, and roof curb.
At present, the lobby's air conditioning is provided by an undersized unit which also serves the
office area. This unit will remain in place, but its supply and return air to the lobby should be capped
' off by the contractor. The lobby wash rooms are presently served by a small fan unit with electric
heat which is inadequate. This unit along with the electric heat must be removed by the contractor.
The new unit shall be a Carrier or equal, have a sensible cooling capacity of at least 36,000 BTUH at
' 72° F dB and a heating capability of at least 60,000 BTUH output. The compressor shall be
electrically driven and the contractor is responsible for electrical connections and 208 volt service.
The unit shall have an EER rating of at least 10.0. The heating shall be natural gas and the
' contractor is responsible for connections and natural gas service. A minimum heating efficiency of
80% is required. The contractor also shall provide one Honeywell T8600 programmable thermostat
for the new HVAC unit.
' The following information is requested for the Chanhassen HVAC projects as part of the bid and
should be included in the contractor's proposal: Design Costs, Permits, Labor Price, Material Price,
Disposal Price, State Sales Tax, Total Bid Price, List of Contractors and Subcontractors,
' Manufacturer of HVAC units, Model number(s), Expected start date of installation, Expected
completion date.
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I MEMORANDUM
CITY OF
CHANHASSEN
690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
(612) 937 -1900 • FAX (612) 937 -5739
' TO: Mayor and City Council
FROM: Don Ashworth, City Manager
' DATE: March 25, 1996
' SUBJ: Approve Contract with Bissonett Engineering Services, Energy Audit
1 This item was briefly discussed with the city council during our work session in February. My
notes indicate that the council wished to see if NSP could provide this service at a cheaper cost,
if we would be reimbursed Bissonett's fees, and what potential cost savings could be achieved.
BACKGROUND
' The state legislature passed a bill requiring NSP to reimburse governmental units that retrofitted
existing buildings with more energy efficient equipment. Any retrofit that could be demonstrated
' through the energy audit (requirement included in the legislation itself) would be eligible for
reimbursement. Attached please find various pieces of correspondence /attachments that outline
the state law in more detail.
' RESPONSES TO COUNCIL QUESTIONS
' • Use NSP to Provide This Service Although NSP has engineers capable of providing this
type of service, theyhave adopted a policy against such. Specifically, NSP sees that
decisions such as the extent of the retrofits is a decision that solely_should'be made by the
' city. They do not want to be seen as not making a retrofit'and'therefore be accused of solely
trying to sell more electricity vs. doing extensive retrofits where they may be accused of
spending more money than was necessary. I.believe that NSP also told me that the necessity
' for the third party independent auditor was iri8luded in the legislation mandating this
program. NSP highly recommends Bissonett to carry out third party energy audits; and
• Is the City Guaranteed to be Fully Reimbursed ?: The only check that the city will be
issuing is the 50% of the engineering contract at the time the final report is submitted. That
1
Mayor and City Council '
March 25, 1996
Page 2 '
cost will be reimbursed to the city by a third party bank when the retrofits have been
completed. The city would be out the approximate $1,500 if we made a decision not to move '
forward with the retrofits. As Mr. Bissonett has made a detailed inspection of the site, it is
highly likely that his estimates of a $22,000 retrofit contract with payback over five years can
be seen as the minimum savings through this program. Accordingly, there should be no '
surprises as a part of the final contract and, therefore, assuming that this item is approved
tonight, there would be virtually no chance that the city would not be reimbursed; and
How Would This Program Interface with the New Construction?: '
g on.. Initially I believed
that it was important to have somebody like a Bissonett Engineering on board to coordinate '
the retrofitting with the new construction. In follow up conversations with Todd
Christopherson, we have come to the conclusion that retrofitting existing city hall should
logically occur towards the end or following construction of the new addition. We would ask '
Mr. Bissonett to ensure that KKE did incorporate into their specifications items that would
qualify for rebate, but no other involvement with the new construction would be necessary.
In all likelihood, a smaller local contractor would probably better serve the city in terms of '
accomplishing the retrofitting of the existing city hall.
I have checked with the references provided by Mr. Bissonett. Ironically, Eden Prairie had '
originally anticipated using the civil engineering firm that they had employed to carry out water
plant modifications to also do the energy work for them. At virtually the same time that they
were looking at the engineering proposal, Mr. Bissonett visited with Eden Prairie and provided ,
them with a proposal. It was the consulting engineering firm's belief that the proposal by
Bissonett would be less money than they would charge to provide that service and that he was in
a better position to administer the project and to assure that all alternatives had been explored. '
It is recommended that the city council approve entering into a contract with Bissonett
Engineering Services to perform an energy audit for the existing city hall. '
1