===== PDF PAGE 4 ===== [Extraction: embedded PDF text] CITY OF WEST CHICAGO INFRASTRUCTURE COMMITTEE AGENDA ITEM SUMMARY ITEM TITLE: AGENDA ITEM NUMBER: Ordinance No. 24-0-0024 -An Ordinance Amending COMMITTEE AGENDA DATE: August 1, 2024Chapter 18-WATER AND SEWER SERVICE, Article Ill. COUNCIL AGENDA DATE: August 5, 2024 - SEWERS, of the Code of Ordinances of the City of West Chicago STAFF REVIEW: Mehul T. Patel, P.E. , Director of Public Works SIGNATURE_________ _ APPROVED BY CITY ADMINISTRATOR: Michael L. Guttman SIGNATURE_________ _ ITEM SUMMARY: Regulated by permit issued by the Illinois Environmental Protection Agency (IEPA), the West Chicago/ Winfield Wastewater Authority's (WCWWA) Regional Wastewater Treatment Plant accepts and treats all sanitary waste discharged from residential and non-residential properties within the City of West Chicago and Village of Winfield. Non-residential waste is regulated by the Municipality's Sewer Use Ordinance (i.e., Chapter 18 of the City of West Chicago Code of Ordinances), which identifies pollutant limitations and parameters (referred 'to as local limits) of the waste discharge. On April 19, 2022, the IEPA Division of Water Pollution Control reissued, to the City, NPDES Permit No. IL0023469 authorizing the WCWWA's Regional Wastewater Treatment Plant to discharge to the West Branch of the DuPage River in accordance with the Effluent Limitations, Monitoring, and Reporting requirements; Special Conditions and Attachment H Standard Conditions of said permit. Special Condition 11.A.3 of reissued NPDES Permit No. IL0023469 requires the WCWWA to conduct a technical re-evaluation of its local limitations consistent with U.S. EPA's Local Limits Development Guidance 9 (July 2004) and submit the evaluation and any proposed revisions to the WCWWA's local limits to the IEPA and U.S. EPA Region 5 for review and approval. The technical re-evaluation report must be submitted to the IEPA and U.S. EPA Region 5 by April 19, 2024. Baxter & Woodman, Inc. of Crystal Lake, Illinois, conducted a technical re-evaluation of the WCWWA's local limitation, to prepare an evaluation report, and to identify suggested/proposed revisions to the City's local limits. Attached for your review and consideration is a copy of the Local Limits Evaluation Report completed by Baxter & Woodman, Inc., dated February 2024. Table 1 on Page 7 of said report identifies Baxter & Woodman's recommendation for changes to the WCWWA's local limitations for regulated pollutants of concern. There is only one change recommended in current limits which is decreasing the current Nickel local limit from 0.9 mg/I to 0.6 mg/I. On March 18, 2024, the City Council approved Resolution No. 24-R-0023 allowing WCWWA to submit the results of the 2024 Local Limits Study Evaluation Report to the U.S. EPA Region 5 and IEPA for review and comment. On June 18, 2024, the WCWWA received a tentative approval from the U.S. EPA Region 5. With the proposed local limit changes approved by the U.S. EPA Region 5, staff recommends the adoption of Ordinance No. 24-0-0024 which amends the City's local limits identified in Chapter 18 - WATER AND SEWER SERVICE, Article Ill. - SEWERS, of the Code of Ordinances of the City of West Chicago. ACTIONS PROPOSED: Adopt Ordinance No. 24-0-0024 ===== PDF PAGE 5 ===== [Extraction: OCR (rendered-page OCR)] CITY OF WEST CHICAGO COMMITTEERECOMMENDATION: ===== PDF PAGE 6 ===== [Extraction: embedded PDF text] ORDINANCE NO. 24-0-0024 AN ORDINANCE AMENDING CHAPTER 18 - WATER AND SEWER SERVICES, ARTICLE III. - SEWERS, OF THE CODE OF ORDINANCES OF THE CITY OF WEST CHICAGO BE IT ORDAINED by the City Council of the City of West Chicago, County of DuPage, Illinois, as follows: SECTION 1: That Chapter 18- WATER AND SEWER SERVICES, ARTICLE III. - SEWERS; Sec. 18-64.3. - Same-Maximum allowable objectionable substances., TABLE A, of the Code of Ordinance of the City of West Chicago be amended to read as follows: TABLE A Maximum Allowable Objectionable Waste Which May Be Discharged into the Sanitary Sewer System Parameter Limit pJ[ Not less than 5.0 nor greater than 10.0 Temperature 150 degrees F Arsenic (Total) 2.0 mg/l Cadmium (Total) 0.4 mg/l Chromium, hexavalent 0.9 mg/I ChromiLm1 (Total) 5.0 mg/1 Copper (Total) 2.0 mg/1 Cyanide (Total) 0.3 mg/l Lead (Total) 2.0 mg/I Mercury (Total) 0.0005 mg/l Nickel (Total) 0.6 mg/l Silver (Total) 1.0 mg/l Zinc (Total) 3.0 mg/1 BOD (5 day) See section 18-68 for allowable limits and section 18-69 for surcharges TSS See section 18-68 for allowable limits and section 18-69 for surcharges NH 3-N See section 18-68 for allowable limits and section 18-69 for surcharges Fats, Oils, & Grease (FOG) - Petroleum & 100 mg/INon-Food Preparation Establishments Fats, Oils, & Grease 200 mg/1(FOG) - Food Services Ordinance 24-0-0024 Page 1 of2 ===== PDF PAGE 7 ===== [Extraction: embedded PDF text] SECTION 2: That all remaining Articles, Sections, and Subsections of Chapter 18 remain unchanged. SECTION 3: That all ordinances and resolutions, or parts thereof, in conflict with the provisions of this Ordinance, to the extent of such conflict, are expressly repealed. SECTION 4: That this Ordinance shall be in full force and effect ten (10) days from and after its passage, approval and publication in pamphlet form as provided by law. PASSED this 5th day of August 2024. Alderman D. Beebe Alderman L. Chassee Alderman J. Sheahan Alderman H. Brown Alderman A. Hallett Alderman C, Dettmann Alderman M. Birch-Ferguson Alderman S. Dimas --- Alderman C. Swiatek Alderman J. Smith, Jr. Alderman R. Stout Alderman J. Short Alderman J. Morano Alderman J. Banas APPROVED as to form: City Attorney APPROVED this 5th day of August 2024. Mayor Ruben Pineda ATTEST: Executive Office Manager, Valeria Perez PUBLISHED: --------- Ordinance 24-0-0024 Page 2 of2 ===== PDF PAGE 8 ===== [Extraction: embedded PDF text] REGION 5 CHICAGO, IL 60604 June 18, 2024 Mehul T. Patel, P.E., CFM Director of Public Works Public Works Department West Chicago/Winfield Wastewater Authority 475 Main Street West Chicago, Illinois 60185 Re: Tentative Approval of Request for Modification of Pretreatment Local Limits (LL) for the West Chicago/Winfield Wastewater Treatment Plant, NPDES Permit No. IL0023469 Dear Mr. Patel: The U.S. Environmental Protection Agency (EPA) has reviewed the West Chicago/Winfield Wastewater Authority Local Limits Evaluation 2023 (Report) which was submitted to us on March 27, 2024. Additional information was sent to us by email from Mr. Daniel Panico, the Authority's consulting engineer, on June 7, 2023, in response to our comments which we sent to you and Mr. Panico on May 15, 2024. The Report was submitted to fulfill Special Condition No. 11.A.8 of the West Chicago/Winfield Wastewater Authority's Permit No. IL0023469. We concur with the conclusions of the Report, which recommends the following numerical local limits: POLLUTANT CURRENT LIMIT IN mg/I PROPOSED LIMIT IN mg/I Arsenic 2.0 2.0 Cadmium 0.4 0.4 Chloride None None Total Chromium 5.0 5.0 Hexavalent Chromium 0.9 0.9 Copper 2.0 2.0 Cyanide 0.3 0.3 Lead 2.0 2.0 Nickel 0.9 0.6 Selenium None None Silver 1.0 1.0 Zinc 3.0 3.0 Ammonia Nitrogen None None Mercury 0.0005 0.0005 Molybdenum None None ===== PDF PAGE 9 ===== [Extraction: embedded PDF text] Oil & Grease -- Petroleum Based 100 100 Oil & Grease - FSE 200 200 Biochemical Oxygen Demand None None Total Suspended Solids None None pH 5.0-10.0 5.0-10.0 Phosphorus None None Based on our review of the Report and response to our comments, and in accordance with 40 C.F.R ยง 403.18 of the General Pretreatment Regulations, I am pleased to inform you that the West Chicago/Winfield Wastewater Authority's (Authority's) proposed revisions to its local limits are approvable. This communication should not be construed as a final approval of the Authority's Pretreatment Program local limit submission. Please note that the EPA can only approve the modifications to the local limits after they are ratified by the governing bodies bearing administrative and legal jurisdiction over the West Chicago Regional Wastewater Treatment Plant, i.e., the West Chicago Regional Wastewater Authority Board of Directors, the West Chicago City Council, and the Winfield Village Board. The West Chicago City Council has provided us with a resolution approving the submittal of the Report to EPA. The Winfield Village Board will need to provide a similar resolution, and each municipality will need to amend its sewer use ordinance to include the new local limit for nickel. Please submit a signed resolution from the Village of Winfield accepting the revised local limits for our records, as well as signed amendments to the City of West Chicago's and Village of Winfield's respective Sewer Use Ordinances containing the revised limits mentioned in above table. Once the documents mentioned above are submitted, EPA will be able to issue a final approval of the local limits. Within 90 days, please submit these items by email to the following addresses: R5NPDES@epa.gov and schweizer.jonathan@epa.gov Thank you for your continued commitment to protect our nation's water resources. If you have any questions, please contact Jonathan Schweizer at (312) 886-0211, or at schweizer.jonathan@epa.gov. Sincerely, Digitally signed by JODIE JODIE OPIE g:i!:2024.os.1a 11 :20:32 -05'00' Jodie Opie, Supervisor Section 1, Permits Branch Water Division cc: Brant Fleming, IEPA, brant.fleming@illinois.gov Daniel Panico, Baxter & Woodman, Inc., dpanico@baxterwoodman.com Daniella Martinez, Jacobs Solutions, Inc., Daniella.Martinez@jacobs.com 2