HomeMy WebLinkAboutGrease Build-up in #7 Liftstation Photos i € .5
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CIty of Wayzata Mayor:
600 Rice Street Andrew Humphrey
Wayzata, MN 55391-1734 City Council:
Mary Bader
Suzanne Bangert
City of Wayzata Kenneth Wilcox
City Manager:
Allan Orsen
Jeffrey Kreafle
Wayzata Country Club
200 Wayzata Blvd W
Wayzata, MN 55391
RE: Grease obstruction in public sewer
Dear Mr. Kreafle,
You are receiving this notice because of the large amount of grease being discharged from your
restaurant into our sewage collection system. Dave Dudnsky recently showed you pictures of
our plugged force main that discharges from Lift Station 7 just south of the tennis courts.The
City has spent a significant amount of time and effort to open the force main. In addition the City
had to hire contractors who had the specialized equipment necessary to remove the grease from
the force main.
The City of Wayzata has adopted rules designed to protect it's infrastructure including the
sanitary sewer. Wayzata City Code Section 402.08 references rules of the Metropolitan Council
Environmental Services (formerly Metropolitan Waste Control Commission) entitled Waste
Discharge Rules which regulates the quantity and quality of waste discharge into public sewers.
The rules also include enforcement and administration of criminal and civil penalties.
According to MCES Waste Discharge Rules Section 406.00.No person, except as authorized in
a permit, shall discharge or cause to be discharged into public sewers any of the following
materials:
406.04 Any wastewater containing fat, wax, tallow, grease, or oil of animal or vegetable
origin in excess of 100 milligrams per liter, that is likely to solidify, become viscous, or
become water insoluble, and is likely to cause obstruction to the flow in public sewers or
cause interference or pass-through.
406.05 Any solid or viscous material in amounts which are likely to cause obstruction to
the flow in a public sewer or interference with the operation of public sewers.
Prohibited materials include but are not limited to: garbage particles.
406.21 Garbage, discarded material and grease from non-domestic sources which results
from the handling,processing, storage,preparation, serving and consumption of food,
when the effect of such disposal into public sewers is the avoidance of off-site solid
waste disposal;provided, however,that this section does not prohibit sink-fed garbage
disposal units used for incidental food waste disposal.
Phone: 952-404-5311 Fax: 952-404-5318 email: don(wavzata.org home page:
www.wavzata.org
406.22 Any material discharged to public sewers which is likely to cause interference,
pass-through, or operational problems at any Metropolitan Council treatment plant,or
which violates applicable state or federal laws or requirements.
Attached is a list of dates and actions taken in dealing with the grease problem over the last two
months. Included are additional expenses incurred from specialty contractors to remove the line
blockage.
An invoice for the cost of work done by the specialty contractors will be sent to you.
Finally, we need you hear from you within two weeks of receipt of this letter as to how and when
this grease problem will be addressed in the restaurant.
Sincerely,
Don Johanson
Building Official
•
Phone: 952-404-5311 Fax: 952-404-5318 email: donOwavzata.org home page: www.wavzata.org
AAA"
Metropolitan Council
May 9, 2008 Environmental Services
Jim Eibensteiner—Superintendent
City of Wayzata Public Works
299 Wayzata Blvd. West
Wayzata, Minnesota 55391
RE: MCES Monitoring Results-April 1-4, 2008
Mr. Eibensteiner:
Attached are the Metropolitan Council Environmental Services(MCES)analytical results from
sampling conducted on the three sewer lines discharging into ylayiala's 47 lift sta.ioii from
April 1-4, 2008.
MCES monitoring results indicate that the highest concentrations of oiUgrease are coming from
the sewer line (SP-01), containing the Wayzata Country Club's wastewater. The analytical
results confirmed the visual observations of grease noted in the Country Club's line. On the
second day of monitoring, MCES recorded an oil/grease concentration of 172 mg/L at SP-01.
MCES Waste Discharge Rules identify wastewater in excess of 100 mg/L of oil/grease as a
prohibited discharge. If the wastewater from the Country Club continues to cause problems for
the City of Wayzata's sewer system,and/or it is identified as causing a problem in MCES's
sewer lines, MCES will pursue enforcement action towards the Wayzata Country Club.
Please let me know if we can be of any further assistance.
If you have any questions, please contact me at 651-602-4705 or email me at
bob.golden@metc.state.mn.us.
Sincerely,
•C4411
Robert H. Golden, P.E.
Principal Engineer
Industrial Waste Pollution Prevention Section
cc: L.H. 1-Iermes, MCES
•
•
www.metrocouncil.org
390 Robert Street North • St. Paul, MN 55101-1805 • (651)602-1005 • Fax(651)602-1477 • TTY(651)291-0904
An Equal Opportunity Employer
Table 1 -Oil and Grease Analytical Results
Wayzata Lift Station#7
MCES Monitoring Results
Project ID:4676-08-01
Sampling Period:April 1-4,2008
SP-01 -Wayzata Country Club Sewer Line
Date 4/1-2 4/2-3 4/3-4
Tue-Wed Wed-Thu Thu-Fri Survey
Time Period 1100-1030 1100-1000 Average
Oil/Grease, mg/L NS 172 121 147
SP-02-Residential Line
Date 4/1-2 4/2-3 4/3-4
Tue-Wed Wed-Thu Thu-Fri Survey
Time Period 1300-1030 1100-1030 1100-1000 Average
Oil/Grease,mg/L 13 14 34 20
SP-03-Wayzata Public Works
Date 4/1-2 4/2-3 4/3-4
Tue-Wed Wed-Thu Thu-Fri Survey
Time Period 1300-1000 1100-1030 1100-1000 Average
Oil/Grease,mg/L 22 6 18 15
NS-No sample
Sampling Points:
SP-01: MH north of Wayzata LS#7 containing only Wayzata CC flow. Visible grease buildup was
noted in this MH.
SP-02: MH west of Wayzata LS#7 containing flow from seven residential homes. No visible grease
buildup.
SP-03: Wayzata Public Works liftstation containing only waste from Public Works building. No visible
grease buildup.
Sample collection:All samplers were set to collect 4 samples/bottle/hour and then composited on an
equal volume basis.
Notes:Sampler malfunctioned at SP-01 on the first day of sampling. An arithmetic average is shown.
rhq 5/9/08
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