HomeMy WebLinkAbout2012-03-21 PACKET 08.A.REQUEST OF CITY COUNCIL ACTION COUNCIL AGENDA
MEETING ITEM # A
DATE 3/21/12
PREPARED BY Community Development Robin Roland
ORIGINATING DEPARTMENT STAFF AUTHOR
COUNCIL ACTION REQUEST
Consider approving the site plan to allow construction of a carbon filtration facility and ancillary
structures at 3M Cottage Grove and a variance to the Exterior Design Standards of the Zoning
Ordinance to allow the exterior surface materials of the two industrial buildings to be constructed of
metal material similar in design and color to the industrial buildings on the 3M Cottage Grove site.
STAFF RECOMMENDATION
Adopt the resolution approving the site plan and variance for the proposed carbon filtration facility
at 3M Cottage Grove.
BUDGET IMPLICATION $N /A $N /A N/A
BUDGETED AMOUNT ACTUAL AMOUNTFUNDING SOURCE
ADVISORY COMMISSION ACTION:
DATE
REVIEWED
APPROVED
DENIED
® PLANNING 2/27/12
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❑ PUBLIC SAFETY
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❑ PUBLIC WORKS
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❑ PARKS AND RECREATION
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❑ HUMAN SERVICES /RIGHTS
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❑ ECONOMIC DEV. AUTHORITY
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SUPPORTING DOCUMENTS
® MEMO /LETTER: Memo from John McCool dated 3/9/12
® RESOLUTION: Draft
❑ ORDINANCE:
❑ ENGINEERING RECOMMENDATION:
❑ LEGAL RECOMMENDATION:
® OTHER: Excerpt from unapproved minutes of the 2/27/12 Planning Commission meeting
ADMINISTRATOR'S COMMENTS
f
City Administrator Date
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COUNCIL ACTION TAKEN: ❑ APPROVED ❑ DENIED ❑ OTHER
CITY OF COTTAGE GROVE
MINNESOTA
TO: Mayor and Members of the City Council
Ryan Schroeder, City Administrator
FROM: John McCool, Senior Planner
DATE: March 9, 2012
RE: Proposed 3M Cottage Grove Carbon Filtration Facility Project — Site Plan and
Variance Applications
Proposal
3M has submitted site plan and variance applications to construct a carbon filtration facility at 3M
Cottage Grove. The property address is 10746 Innovation Road. The proposed carbon filtration
facility consists of two buildings and two outdoor water storage reservoirs. Because the two
buildings are proposed to be constructed with metal exterior materials, 3M is requesting a
variance to the Zoning Ordinance regulations pertaining to the exterior surface materials for
industrial buildings.
Below is an aerial photo showing the proposed location of the carbon filtration facilities on 3M
Cottage Grove's property:
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Location Map
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 2 of 9
Planning Commission
The Planning Commission reviewed 3M's site plan and variance applications at a public hearing
on February 27, 2012. Pat McGrann and Mark Gaetz, 3M representatives, attended the meeting
and made a short presentation about the project. No oral testimony or written comments were
received at the meeting.
The Planning Commission supported the applicant's proposal and unanimously (7 -0 vote) rec-
ommended that the City Council approve the site plan and grant a variance to the Zoning Ordin-
ance regulations relative to exterior surface materials for industrial buildings. An excerpt from the
Planning Commission's unapproved minutes is attached.
Ordinance Requirements
The 3M Cottage Grove property is zoned Heavy Industry (1 -3). This zoning classification is con-
sistent with the industrial land use designation shown on the Future Land Use map of the City's
Future Vision 2030 Comprehensive Plan, adopted on March 2, 2011. The proposed carbon filtra-
tion facility is an allowed use in the 1 -3 District.
The City's Zoning Ordinance requires site plan approval for new structures and major additions to
existing structures. The purpose of the site plan review is to ensure that new developments con-
form to the City's development standards and ordinance regulations.
All the minimum building setbacks and the maximum building height comply with the 1 -3 zoning
district's development standards. The new filtration facility cannot be seen from 3M's main
entrance or from the Mississippi River.
3M is requesting a variance to the Architecture section of the Zoning Ordinance. The main reason
for the variance application is because the metal material provides versatility for constructing the
carbon filtration facility. The building's foundations and concrete pads for the carbon vessels and
the carbon vessels will be constructed first. The second construction phase will be the exterior
walls and roof. This construction method is efficient in completing the project in a timely manner.
The ordinance requires the exterior building materials for industrial buildings to have a minimum
of 65 percent of Class 1 or Class 2 materials. Class I materials comprise of copper panels, fired
clay face brick, natural stone, transparent glass, or other comparable or superior materials. Class
2 materials are architecturally textured precast concrete panels, concrete brick, masonry stucco,
specialty concrete block, synthetic or cultured stone, or tile. 3M proposes to construct the two
buildings with insulated metal wall panels and translucent windows. The proposed building's exte-
rior materials will have continuity and the same color palette as other buildings in this area of the
site.
• 4
3M is proposing to install a granular activated carbon treatment system to treat perfluorochemi-
cals (PFCs) in groundwater. The treated water will be used by 3M and some excess treated non-
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 3 of 9
potable water will be discharged into the Mississippi River. This action is consistent with decisions
made and documented by the Minnesota Pollution Control Agency in Minnesota Decision Docu-
ments for the Woodbury Disposal Site and the 3M Cottage Grove facility (December 2008 and
August 2009, respectively). 3M has received an agreement in principle from the MPCA to pro-
ceed with the construction of the carbon filtration facility and is currently working with state
agency staffs on specific project approvals. Beyond the immediate value of conducting the ex-
tended pilot well pump test, 3M plans to treat other groundwater that is currently in use at the 3M
Cottage Grove facility. The current schedule calls for treatment of water that is currently pumped
and used from the Woodbury Disposal site to commence in the second quarter of 2013 and for
other 3M Cottage Grove facility production wells to be treated later in 2013.
The Minnesota Pollution Control Agency (MPCA) and 3M signed a Settlement Agreement and
Consent Order in May 2007 to clean up three 3M PFC Disposal Sites in Washington County. One
of these sites is at the 3M Cottage Grove plant. As part of the agreement, 3M completed a Re-
medial Investigation and Feasibility Study for the Cottage Grove site, the focus of which was to
identify any remaining threats to public health or the environment from releases of PFCs at the
site. The Consent Order also required that in developing a cleanup alternative, primary consider-
ation should go to those that excavate and destroy remaining PFC wastes or that excavate and
dispose of PFC wastes in a permitted, isolated, engineered containment facility.
The MPCA reviewed the alternatives identified in the Feasibility Study and issued a Minnesota
Decision Document in August 2009. This document summarized the facts and determinations
made by the Minnesota Pollution Control agency in approving the recommended response action
alternatives. A summary of the recommended remedies at the 3M Cottage Grove site are:
• Institutional controls /deed restrictions, site access controls, and long -term groundwater
monitoring.
• Enhanced groundwater recovery with carbon treatment to remove PFCs prior to discharge.
(In process)
• Stabilize flow channel to East Cove and remove PFC- containing sediments throughout the
site. (Completed)
• Remove portions of sandbar at cove outlet. (Completed)
• Remove concrete basin previously used for sludge neutralization /disposal in Disposal Area
D1 and remove additional overlying soils in that area. (Completed)
• Remove PFC contaminated soils in Disposal Areas D1, D2, and D9 which exceed Indus-
trial Soil Reference Values for PFOA and /or PFOS. (Completed)
• Transport excavated soil, sediments, and materials to an engineered long -term contain-
ment cell at SKB Industrial landfill, Rosemount, Minnesota or Environmental Quality
Company's disposal waste treatment plant in Belleville, Michigan. All excavated materials
exceeding the Industrial Soil Reference Values established by the MN Pollution Control
Agency will be disposed off -site. (Completed)
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 4 of 9
' - -r. -
October 21, 2009 — The City of Cottage Grove City Council approved 3M's conditional use permit
application to excavate approximately 19,000 cubic yards of soil from approximately two acres of
land located in the southeast corner of 3M Cottage Grove's site. This project removed approx-
imately 19,000 cubic yards of soil from approximately two acres of land located in the southeast
corner of 3M Cottage Grove's site identified as D1 and D2. The D1 Area is a former hydrofluoric
tar neutralization pit and the D2 Area is a former sludge disposal area that received sludge from
3M's wastewater treatment ponds. The work started in November 2009 and was completed in
2010. Cleanup projects for the D9 Area, access road, and East Cove areas were identified as
future projects.
April 21, 2010 — The City of Cottage Grove City Council held a public hearing and approved a
conditional use permit application to excavate approximately 10,000 cubic yards of soil from an
area described as Disposal Site Area 9. Area D9 is a former sludge disposal pit. The work started
in May 2010 and was completed in 2011.
July 7, 2010 — The City of Cottage Grove approved 3M's conditional use permit to excavate ap-
proximately 10,000 cubic yards of excess soil to re -grade an existing private access road be-
tween their wastewater treatment facility and an area known as the East Cove. This work was
completed in November 2010.
March 14, 2011 - The City Council was informed that a notice of availability to review 3M's EAW
was submitted to the Environmental Quality Board on March 14, 2011. The EQB publish the no-
tice in the EQB's Monitor on March 21, 2011. The 30 -day public comment period for the EAW
was from March 21, 2011, to April 20, 2011. A press release briefly describing the project, where
the EAW can be reviewed, the comment period deadline, and to whom comments should be
submitted was sent to the South Washington County Bulletin. The EAW process was briefly
described and a copy of the EAW and Work Plan were distributed to the City Council.
March 25, 2011 — The Planning Commission was informed of 3M's EAW and conditional use
permit applications for the East Cove Sediment Removal Project. The EAW process was briefly
described and a copy of the EAW and Work Plan were distributed to the Planning Commission.
April 13, 2011 — The Environmental Commission and Planning Commission held a joint workshop
meeting to listen to 3M's presentation on the East Cove Sediment Removal Project. The EAW
process was briefly described and a copy of the EAW and Work Plan were distributed to the
Environmental Commission.
October 2011 — Work on the East Cove Sediment Removal Project started and was substantially
completed in January 2012. Vegetation restoration will be completed in Spring 2012.
• • •- •
Granular Activated Carbon Treatment System
3M is proposing to install a granular activated carbon treatment system to treat perfluorochemi-
cals (PFCs) in groundwater to be used at the 3M Cottage Grove site. More specifically, the treat-
ment facility will be designed to treat water from seven groundwater extraction wells at the 3M
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 5 of 9
Cottage Grove site and four groundwater supply wells located on 3M's Woodbury property six
miles north of the plant site on Keats Avenue. Existing groundwater supply wells (Production
wells 2 -6) and two new barrier wells ( #9 and #10) will be used to maintain a groundwater capture
system along 3M Cottage Grove's southern property boundary. Pumping rates will vary during the
life of this facility as necessary to ensure capture of PFCs. Final minimum pump out rates will be
set based upon testing and agreement with the MPCA. A monitoring plan will be established to
routinely evaluate system performance. All well pumps will be modified with variable frequency
drive units allowing 3M to control the pump out rates of each well. New underground piping will be
installed within the 3M Cottage Grove site to route the existing raw water to the treatment facility
and return the treated water to the existing points of use and storage reservoirs. The maximum
pumping capacity of each well is provided in the Table 1.
Table 1 —Well Pumping Capacities
Well No.
Water Use
Pump Cap acity (gpm)
2
Potable
1,000
3
Potable
1,000
4
Potable
750
5
Potable
1,500
6
Non - potable
1,000
9
Non-potable
1,000
10
Non - potable
1,000
WB1
Non - potable
700
WB2
Non - potable
250
WB3
Non-potable
800
WB4
Non-potable
1,500
Potable water is used for sanitary purposes at the 3M Cottage Grove site and as a back -up
supply source for the non - potable system should demand surpass the non - potable system ca-
pacity. Non - potable water is used for manufacturing process water and water cooling systems.
Wells 5, 9, 10, W131, W132, W133, and W134 will run continuously and be equipped with variable
frequency drives to vary the pumping rate based on the demand and capture requirements. Wells
2, 3, 4, and 6 will serve as standby wells and placed in service as needed. The anticipated aver-
age pumping rates are 5.2 million gallons per day (MGD) of non - potable water and 1.7 MGD of
potable water. These volumes include water used by the LSP Cottage Grove site. Potable water
is supplied by overhead pipe line to the LSP facility and recycled process cooling water is sup-
plied from 3M's cooling water system. No untreated water will be stored in any existing or new
storage reservoirs. The location of the seven existing wells, five existing reservoirs, and the two
proposed new reservoirs are shown on the aerial photograph below.
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 6 of 9
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.Non- potable Reservoir
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. Potable Well i• Potable Reservoir
40 Proposed Potable and Non - potable Reservoirs
All the water pumped from the four potable wells (Well Nos. 2, 3, 4, and 5) and the seven non -
potable wells (Well Nos. 6, 9, 10, WB1, WB2, WB3, and W134) will be treated through the carbon
filtration facility. The 18 filtration vessels inside the carbon filtration facility each contain approx-
imately 20,000 pounds of carbon. It is envisioned that the spent carbon will be changed out every
one to two years. The spent carbon will be sent back to the carbon vendor where it will go
through a process where it is "re- activated" (also referred to as regeneration). Reactivation of
carbon is a high temperature process that ensures destruction of the compounds that have been
removed by the carbon filtration process.
Building Materials
3M's proposed carbon treatment building is the larger of the two proposed building structures.
The building dimensions are 62 feet by 167.5 feet for a total floor area of 10,385 square feet. The
building height is 38 feet. Inside this building will be 18 carbon vessels that are 10 feet in diameter
and approximately 19.5 feet tall. A floor plan and photo enhanced illustration of the building's
exterior is shown below.
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 7 of 9
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The smaller building is the booster station. This building is 36 feet by 56 feet for a total floor area
of 2,016 square feet. This building height is 19.5 feet and will house approximately eight booster
pumps. A floor plan and photo- enhanced illustration of this building's exterior is shown below.
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Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 8 of 9
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A new potable reservoir will be located on the south side of the booster station building. This re-
servoir will have a storage capacity of 500,000 gallons and is approximately 32 feet in height. The
new non - potable reservoir will have a capacity of 375,000 gallons and is also approximately 32
feet in height. This reservoir is located on the north side of the booster station building.
Honorable Mayor Bailey, City Council Members and Ryan Schroeder
3M's Carbon Filtration Facility Project — Site Plan and Variance Applications
March 9, 2012
Page 9 of 9
Public Hearing Notices
The public hearing notice was published in the South Washington County Bulletin on February
15, 2012. Public hearing notices were mailed to 22 neighboring property owners on February 15,
2012.
*I -I!- =1
That the City Council accepts the Planning Commission's recommendation to approve 3M Cottage
Grove's two planning applications as described below and adopt a resolution approving both of
these applications. The findings of fact and conditions of approval are included in the attached draft
resolution.
A variance to the Exterior Design Standards of the Zoning Ordinance to allow the exterior
surface materials for the two proposed industrial buildings to be constructed of metal material
that is similar in design and color to other industrial buildings at the 3M Cottage Grove site.
2. The site plan application for the construction of the proposed carbon filtration facility and
ancillary structures.
11.711 "C•1i•oilC•1KIZi 11 /
• iiiiiiiiiiii •' A 1 •
WHEREAS, 3M Company applied for a site plan review of a carbon filtration facility at 3M
Cottage Grove, and a variance to the architectural regulations to allow the two proposed
buildings to be constructed of pre- engineered metal panel walls and roofs that will match the
colors and style of their existing wastewater treatment building and construct two outdoor water
storage tanks, on property legally described as:
That part of Section 35, Township 027 North, Range 21; Cottage Grove,
Washington County, MN being in the West Half of Section 35, Township 027
North, Range 21 West and lying south of the right -of -way of the Chicago,
Milwaukee, & St. Paul Railway Company.
Commonly known as 10746 Innovation Road, Cottage Grove, Washington County,
Minnesota.
WHEREAS, public hearing notices were mailed to property owners within 1,320 feet of the
property and a public hearing notice was published in the South Washington County Bulletin; and
WHEREAS, the Planning Commission held a public hearing on February 27, 2012; and
WHEREAS, a planning staff report which detailed specific information about the property
and the variance application was prepared and presented; and
WHEREAS, the public hearing was open for public testimony. The applicant attended the
public hearing. No other public testimony was received; and
WHEREAS, the Planning Commission reviewed the criteria and findings established by
the Zoning Ordinance for granting a variance; and
WHEREAS, the Planning Commission unanimously (7 -0 vote) recommended to the City
Council that the site plan review and variance be granted based on the finding of facts and
subject to certain conditions stipulated in the planning staff report.
NOW, THEREFORE BE IT RESOLVED, the City Council of the City of Cottage Grove,
Washington County, Minnesota, hereby approvesa site plan review of a carbon filtration facility
at 3M Cottage Grove,and a variance to the architectural regulations to allow the two proposed
buildings to be constructed of pre- engineered metal panel walls and roofs that will match the
colors and style of their existing wastewater treatment building and construct two outdoor water
storage tanks located on the property legally described above. Granting of the variance is based
upon the following findings of fact:
Resolution No. 2012 -XXX
Page 2 of 2
a) The proposed carbon filtration facilities are internal to the 3M Cottage Grove site
and cannot be seen from the Mississippi River or any public roadways.
b) All the minimum building setback requirements of the 1 -3 District are complied with.
c) The proposed exterior materials and colors are similar and consistent with other
buildings on the 3M Cottage Grove site.
d) The building height of the proposed carbon filtration facilities and two new
reservoir tanks are less than the height of other structures that currently exist on
the 3M Cottage Grove site.
e) The proposed carbon filtration system is being installed as an environmental
remediation project designed to remove PFC's from the groundwater and is for the
protection of human health and the environment in accordance with the MPCA
Minnesota Decision Document and MPCA approved Remedial Design /Response
Action Plan for the 3M Cottage Grove site.
f) This remedial activity will prevent PFCs from potentially desorbing from the
sediment into surface water and groundwater.
BE IT FURTHER RESOLVED, the recommendation for approval is subject to the
following conditions:
1. 3M must comply with the remedial actions documented in the Minnesota Decision
Document made by the Minnesota Pollution Control Agency staff in approving the
recommended response action alternatives.
2. The applicant receives building permits from the City of Cottage Grove prior to
constructing the two buildings and reservoirs.
Passed this 21st day of March 2012.
Myron Bailey, Mayor
Attest:
Caron Stransky, City Clerk
_JLCO J Y J I i l l I • • 0 § 2 :� �- 1
6.1 3M Carbon Filtration Facility — Case SP12 -005 and V12 -006
3M Company has applied for a site plan review of a carbon filtration facility at 3M Cottage
Grove, 10746 Innovation Road, and a variance to architectural regulations to allow two pro-
posed buildings to be constructed of pre- engineered metal panel walls and roofs that will
match the colors and style of their existing wastewater treatment buildingand construct two
outdoor water storage tanks.
McCool summarized the staff report and recommended approval based on the findings of fact
and subject to the conditions stipulated in the staff report.
Brittain stated that he is an employee of the applicant and has discussed this matter with city
staff and Planning Commission Chair. It was determined Brittain will not benefit from the ap-
proval or denial of these applications and his participation in the discussion and the Planning
Commission's actions are appropriate.
Pat McGrann, 3M Facility Engineering, 733 Haven Hill Road, Eagan, stated that he is the
project coordinator for this project. He reported that this facility will be a non - occupied space.
The facilities will be controlled by 3M's existing automated computer and pumping systems.
The structure will be kept at around 50 degrees, which is one reason the metal panels are more
appropriate for this type of facility. The treated water will be approximately groundwater tem-
perature. They will not be performing any other activities besides filtration at this building. The
secondary building is a booster station. The pumps will be used to provide water pressure for
the carbon treatment facility and private water systems. McGrann explained that treated water
will go into the potable water reservoir and untreated water will be pumped into the non - potable
reservoir. The new pumping station will feed the water back into the existing reservoirs, which
would function as they currently do. There will not be any chemicals present in either of the
buildings; they will strictly be used for carbon treatment and pumping.
Reese noted that new ground piping will be installed. McGrann explained that because of the
infrastructure that is currently there and that the wells feed directly to the pumping stations at
the reservoirs, they have to put a new distribution system to this facility from all of the wells.
They will install new high density polyethylene underground piping mains to collect waterfrom
the different well systems. They will not be abandoning any of the existing piping from the
points where they tie back to the reservoirs. Reese asked if the water would be going to the
river from this new facility. McGrann stated that the discharge from this new facility will only go
to the reservoirs, not into the river.
Rediske noted that the filters will be replaced every two years and sent back to the vendor to be
cleaned. She asked where the vendor is located. McGrann responded Pennsylvania. He ex-
plained that the material will be tested periodically according to MPCA standards. They will be
operating what is called a lead lag. The first tank will filter the water, which will be run through a
second tank. When they get breakthrough on the first tank, the process will be reversed; the lag
tank becomes the lead and they change out the first tank with new carbon. The carbon is sent
to the vendor to be re- energized through a kiln process and returned to 3M for non - potable use.
He stated that 3M will follow Minnesota Health Department standards.
Messick opened the public hearing. No one spoke. Messick closed the public hearing.
Reese made a motion to approve the site plan review of the 3M carbon filtration facility
with a variance to the Zoning Ordinance architecture regulations for the two proposed
carbon filtration facility and booster station, based on the findings of fact and subject to
the conditions listed below. Ventura seconded the motion.
Findings of Fact.
A. The proposed carbon filtration facilities are internal to the 3M Cottage Grove site and
cannot be seen from the Mississippi River or any public roadways.
B. All the minimum building setback requirements of the 1 -3 District are complied with.
C. The proposed exterior materials and colors are similar and consistent with other
buildings on the 3M Cottage Grove site.
D. The building height of the proposed carbon filtration facilities and two new reservoir
tanks are less than the height of other structures that currently exist on the 3M
Cottage Grove site.
E. The proposed carbon filtration system is being installed as an environmental remed-
iation project designed to remove PFC's from the groundwater and is for the protec-
tion of human health and the environment in accordance with the MPCA Minnesota
Decision Document and MPCA approved Remedial Design /Response Action Plan for
the 3M Cottage Grove site.
F. This remedial activity will prevent PFCs from potentially desorbing from the sediment
into surface water and groundwater.
Conditions of Approval.
1. 3M must comply with the remedial actions documented in the Minnesota Decision
Document made by the Minnesota Pollution Control Agency staff in approving the
recommended response action alternatives.
2. The applicant receives building permits from the City of Cottage Grove prior to con-
structing the two buildings and reservoirs.
Motion passed unanimously (7 -to -0 vote).