HomeMy WebLinkAboutIndustrial Wastewater Discharge Permit Renewal - Unifrax 1 LLCBOARD OF PUBLIC WORKS
AGENDA ITEM REVIEW REQUEST FORM
Date 7/27/2021
Name Serena Lozano-Shane Department UTILITIES
BPW Date 8/10/2021 Phone Extension 5798
Review and Approval Required Prior to Submittal to Board Diversity Compliance
and Inclusion Officer Officer Name BPW Attorney Attorney Name
Dept. Attorney Attorney Name
Purchasing
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Chg. Order, No. Traffic Control Resolution
x Other: Unifrax Industrial Discharge Permit Modification
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MBE/WBE Contractor MBE
WBE Completed E-Verify Form Attached Yes
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Project Name
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Terms of Contract
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City of South Bend
Department of Public Works
Industrial Pretreatment Program
Significant Industrial User – Permit No. 218071-92046
In accordance with all the terms of Chapter 17 of the City of South Bend’s Municipal Code, and with any
applicable provisions of federal or state law and regulations, permission is hereby granted to:
Unifrax 1 LLC
54401 Smilax Road
New Carlisle IN 46552
for the contribution of wastewater into the City of South Bend Publicly Owned Treatment Works.
This permit is granted in accordance with the application filed on 22 January, 2018.
Effective on: 14 April, 2018
Expires on the: 13 April, 2023
Revised: 24 October, 2018
10 August, 2021
Any violation of the terms and conditions of this permit shall be deemed a violation of the City of South Bend
Municipal Code and will subject the permittee to the sanctions set out in section 17-11 through 17-13 of the
Municipal Code. The permittee shall file an application for a renewal permit, a minimum of 90 days prior to the
expiration date.
Approved By: Board of Public Works
_________________
Gary A. Gilot, Member
_________________
Jordan V. Gathers, Member
PERMIT BRIEFING MEMO
1. Facility Description
Unifrax 1 LLC engages in the production of high temperature ceramic fiber insulation and value
added products. The ceramic fiber is produced from raw materials such as alumina, sand, zircon,
and kaolin. At this facility, insulation is manufactured in bulk, needled into blanket form, or is
processed into coatings/mixes.
Unifrax operates 24 hours a day, 7 days a week. Unifrax currently employs 140 people. There is
no seasonal variation in production.
It has been determined that Unifrax does not fit into category 40 CFR 414: organic chemicals,
plastics, and synthetic fibers.
2. Discharge Description
This permit oversees, but not limited to, wastewater discharged at Sample Site 5-1. Discharge from
Sample Site 5-1 includes domestic wastewater and process wastewater from the fabrication
department which includes SiFab Line addition. The wastewater leaves the facility, is channeled
through Sample Site 5-1, and is measured via Parshall Flume and ultrasonic flow meter prior to
discharge into the City of South Bend Sewer System.
Unifrax has identified copper and zinc as known to be present in their wastewater. Unifrax suspects
that all toxic organic compounds are absent.
From May 2020 to May 2021, Unifrax’s wastewater flows were as follows:
The 12-month average daily flow was: 16,244 gpd.
The 12-month maximum daily flow was: 115,360 gallons
SiFab Line is estimated to add 4,000 to 10,000 gpd
Note that precipitation is diverted to a storm pond and is not discharged to the City of South Bend’s
POTW. Wastewater from furnace trough is also discharged to the storm pond.
3. Sample Site Description
Sample monitoring is conducted at Sample Site 5-1, which is located in a sample shed south of the
facility. Inside the sampling shed is a manhole with a light plastic cover that has a handle to to lift
it out of the opening. The wastewater is metered with a three (3) inch parshall flume and ultrasonic
flow meter. The flow meter output is in the shed and is equiped such that flow proportioned
sampling may be conducted.
4. Wastewater Treatment
Unifrax employs the use of grit removal, filtration, and a settling tank to pretreat its wastewater.
5. Classification
Unifrax 1 LLC is classified as a Significant Industrial User (SIU). Unifrax Corporation is further
categorized as a C industry per the City’s Industrial Pretreatment Program Monitoring Plan in
which all industries that discharge process wastewater between >25,000 gpd <50,000 gpd are
Category C industries.
6. Calculation of Limits
Discharge limits are applied from the South Bend Municipal Code without modification.
7. Monitoring Frequency
Monitoring frequencies are based on South Bend’s US EPA approved Industrial Pretreatment
Program Monitoring Plan.
8. Industrial Operator Certification Requirement
Operator Certification Requirement: A-SO
Industrial operator certification requirements are based on the criteria listed in Indiana
Administrative Code, Title 327, 5-22-5.
Permit Drafted by:
City of South Bend
Industrial Pretreatment Group