3130 Lexington Ave - Met Council Capacity Demand Review Ltr z
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E-Maii: martina.nelson@metc.state.mn.us
June 30, 2015 '���'� a� ZQ�S
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3M Purification lnc
3130 S Lexington Ave
Eagan, MN 55122
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The Sewer Availability Charge (SAC) is a fee for wastewater capacity or demand, which has been levied
on all communities by MCES (and its predecessor agencies) since 1973 for increased demand by users '
of the Metropolitan Disposal System. SAC revenue is used to pay for a portion of MCES's capital '
improvements. While SAC is a metropolitan fee on communities, it is calculated based on the capacity
demand of each specific facility. Typically, communities pass this fee through to the property owner or
business involved. MCES directly administers SAC procedures related to industrial permittees of
MCES.
As part of the SAC policy, industries holding an Industrial Discharge Permit are subject to a "Capacity
Demand Review" one year prior to expiration of their permit. The "Capacity Demand Review" serves as
a method to detect demand increases (indicated by recent-volume measurements) from the processes
of a facility and to encourage reductions if increases have occurred. £urrent wastewater volumes are
converted to a SAC demand equivalent and compared to the "assigned SAC baseline" for the site. Any
capacity demand increases beyond that baseline have the potential to cause assessment of additional
SAC. Note also, that building activity may incur additional SAC liability.
The "SAC Questionnaire" sent to you in August of 2013 in order to obtain additional information regarding
the SAC history of your facility, indicated a total of 29 SAC were paid for your facility. Further research of
MCES records confirmed that total of 29 SAC. The "SAC Questionnaire" also indicated 3M is the sole
occupant of the above property. This information has been used to establish the "assigned SAC
baseline"for your facility. Please find enclosed an "Assigned SAC Baseline Worksheet" for your files.
Utilizing the newly established "assigned SRC baseline", the results of the preliminary "Capacity
Demand Review" indicate an increased demand of the sanitary sewer equivalent to 1 SAC unit(s).
Please refer to the attached "Capacity Demand Review" for the results. Based on the 2015 SAC rate of
$2,485 per unit, the metropolitan charge for 1 SAC unit(s) would be $2,485. Note that the SAC rate is
subject to increase, and that all SAC payments are assessed at the rate in effect at the time of payment.
SAC payment is due at the end of the month following receipt of your renewed permit, but can be paid at
any time up to that point. Additional charges may be added to the metropolitan SAC by the community in
which your facility is located.
A follow-up letter will be mailed to you four months prior to permif renewal describing two options
regarding a potential SAC payment. The first option will be for your community to pay SAC based on the
preliminary results of the "Capacity Demand Review" and SAC rate in effect at time of payment. Your
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permitted industry will then probably be required to compensate the community.
The second option will be to conduct a 30-day wastewater volume study (guidelines enclosed) to
determine the updated SAC equivalent of wastewater demand. The volume study option will be
beneficial to your industry if you choose to initiate wastewater reduction measures to reduce or
eliminate the amount of SAC due. A final enclosure is the "SAC Statement of Intent." Please
complete and return it to MCES by July 30, 2015.
With either option, a "SAC Payment Form"will be enclosed with your industry's renewed "Industrial
Discharge Permit" stating the amount of inetropolitan SAC due (from the community) if a SAC payment
is required. It should be noted that many communities use SAC determinations to assess additional
municipal fee(s) which are in addition to the metropolitan SAC charge. For this reason, total fees
incurred may be significantly greater than the SAC liability calculated herein. If you are unsure as to
whether or not additional fees are applicable in your community, you should call the community's office
to inquire. At this time, no money should be sent to MGES or corr�munity offices. When and if due,
the SAC payment shall be made to the community using the "SAC Payment Form."
Please be aware the information contained in this letter is accurate under the Metropolitan Council's
current SAC policy. Feel free to check with us at any time about changes in policy that may be adopted,
pending or that are being publicly contemplated.
Minnesota Technical Assistance Program (MnTAP) offers assistance to industries with pollution
prevention concerns, including the reduction of wastewater volumes. If you are able to reduce the
discharge volume of your facility, the potential SAC liability indicated in this letter could be reduced or
eliminated. The services provided by MnTAP are free. For more information, call MnTAP at (612)
624-1300.
If you have any questions, please contact Tina Nelson at (651) 602-4728 or via email at
martina.nelsonC�metc.state.m n.us.
Sincerely, �
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Robert Nordquist, P.E.
Industrial Waste Manager
Industrial Waste and Pollution Prevention Section
Metropolitan Council Environmental Services
Enclosures
cc: Jessica Nye, MCES
Tina Nelson, MCES
John Gorder, City of Eagan
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� Metropolitan Councill Environmental Services
Industrial Waste&Pollution Prevention Section
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St. Paul,MN 55101-1805 '
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Industry Name 3M Purification inc
Permit Number 1499
Permit Expiration Date 6/30/2016
SAC equivalent of the January 01 to December 31, 2014 30 Unit(s)
Self-Monitoring Report.
(Total wastewater volume/total number of
operating days equals average daily waste-
water volume. Each SAC unit equals 274 gallons)
Assigned SAC Baseline Value 29 Unit(s)
MCES policy determined the SAC baseline value to be the SAC equivalent of the volume reported in the
final self-monitoring report for 1991. The assigned SAC baseline value represents the SAC baseline
value, plus any SAC units paid after the 1991 baseline date, or the value for SAC credits*, whichever is
greater. You should be aware that the "asset only" sale of a companv may triqger the loss of the 1991
baseline. For specifics on this, please refer to the online SAC manual at:
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This review indicates that the SAC equivalent of the current wastewater volume exceeds the assigned
SAC baseline value. The permittee has the option to conduct a wastewater volume study prior to permit
expiration. MCES will make a final determination as to the permittee's SAC liability based on the
preliminary volume data and the SAC equivalent determined from the wastewater volume study. In the
interim, the industrial user has the option to undertake volume reduction measures to reduce or
eliminate SAC associated with this permit renewaL
* MCES SAC payment records may not be current, therefore, the credit value may be revised to account
for unidentified credits if the permittee can provide proof of their existence.
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Revie ed by Date
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September 3, 2013
3M Purification Inc.
3130 S Lexington Ave.
Eagan, MN 55122
Permit Number 1499
SAC Baseline Worksheet
This worksheet calculates the SAC equivalent of the average daily
volume of wastewater discharged during the JUL-DEC 1991 reporting
period. No data was available from your facility for this time period.
The baseline value, therefore, will be equal to the amount of SAC paid
or credited, and will be used during the "Industrial Discharge Permit"
renewal procedure to identify increased use of the Metropolitan
Disposal System and to recover Service Availability Charges for the
increased use.
MCES is of the understanding based on the SAC questionnaire that
3M Purification Inc. is the only occupant in the above address and
has been there since 1974 . Based on MCES records, the following SAC
payments were made for the above address :
6 paid in November of 1973
7 paid in May of 1983 �
2 paid in January af 1993 and
14 paid in October of 1993
There are a total of 29 SAC paid for this building of 128, 000 sq.
ft. (98, 000 sq. ft. process or warehouse and 30, 000 sq. ft. office) .
Assigned SAC Baseline = 29 SAC