NPDES Permit No
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NPDES Permit No. IL0078972 Notice No. drgil0078972 Public Notice Beginning Date: September 19, 2011 Public Notice Ending Date: October 19, 2011 National Pollutant Discharge Elimination System (NPDES) Permit Program Draft Reissued NPDES Permit to Discharge into Waters of the State Public Notice/Fact Sheet Issued By: Illinois EPA Bureau of Water Facility Evaluation Unit 1021 North Grand Avenue East Post Office Box 19276 Springfield, Illinois 62794-9276 217/782-3362 Name and Address of Discharger: Name and Address of Facility: CONMAT Dwyer Quarry 2283 U.S. 20 BR E Hollywood Road P.O. Box 750 Freeport, Illinois 61032 Freeport, Illinois 61032 815/235-2200 (Stephenson County) The Illinois Environmental Protection Agency (IEPA) has made a tentative determination to issue a NPDES Permit to discharge into the waters of the state and has prepared a draft Permit and associated fact sheet for the above named discharger. The Public Notice period will begin and end on the dates indicated in the heading of this Public Notice/Fact Sheet. The last day comments will be received will be on the Public Notice period ending date unless a commentor demonstrating the need for additional time requests an extension to this comment period and the request is granted by the IEPA. Interested persons are invited to submit written comments on the draft permit to the IEPA at the above address. Commentors shall provide his or her name and address and the nature of the issues proposed to be raised and the evidence proposed to be presented with regards to those issues. Commentors may include a request for public hearing. Persons submitting comments and/or requests for public hearing shall also send a copy of such comments or requests to the permit applicant. The NPDES permit and notice number(s) must appear on each comment page. The application, engineer’s review notes including load limit calculations, Public Notice/Fact Sheet, draft permit, comments received, and other documents are available for inspection and may be copied at the IEPA between 9:30 a.m. and 3:30 p.m. Monday through Friday when scheduled by the interested person. If written comments or requests indicate a significant degree of public interest in the draft permit, the permitting authority may, at its discretion, hold a public hearing. Public notice will be given 45 days before any public hearing. Response to comments will be provided when the final permit is issued. For further information, please call Darren Gove at 217/782-0610. The applicant is engaged in the operation of a limestone quarry (SIC 1442). Plant operation results in an average discharge of 1.296 MGD of pit pumpage, storm water runoff and wash water discharge from outfall 001, Stormwater runoff from outfall 002. Public Notice/Fact Sheet – Page 2 – NPDES Permit No. IL0078972 The following modification is proposed: This permit increases the discharge of Outfall 001 from 0.792 MGD to 1.296 MGD, authorizes Outfall 002 for the discharge of stormwater runoff. In addition, the site will have an asphalt plant on its premises, the plant wil not have a discharge. Application is made for new existing discharge(s) which are located in Stephenson County, Illinois. The following information identifies the discharge point, receiving stream and stream classifications: Stream Biological Stream Outfall Receiving Stream Latitude Longitude Classification Characterization 001 Yelloe Creek 42°16’39.33” North 89°34’37” West General Use B 002 Yellow Creek 42°16’35.43” North 89°34’23” West General Use B To assist you further in identifying the location of the discharge please see the attached map. The stream segment receiving the discharge from outfall(s) 001 is on the 303 (d) list of impaired waters. Pollutants Potential Contributors Fecal Coliform Bacteria Livestock production industry/Agricultural Industry Public Notice/Fact Sheet – Page 3 – NPDES Permit No. IL0078972 The discharge(s) from the facility shall be monitored and limited at all times as follows: Outfall: 001/002 LOAD LIMITS lbs/day CONCENTRATION DAF (DMF) LIMITS mg/l 30 DAY DAILY 30 DAY DAILY PARAMETER AVERAGE MAXIMUM REGULATION AVERAGE MAXIMUM REGULATION Total Suspended Solids 35 70 406.106 pH Shall be in the Range of 6-9 Standard Units 406.106 Offensive No effluent shall contain settleable solids, floating debris, visible oil, grease, scum or Conditions sludge solids, color, or odor. Turbidity shall be below obviously visible levels. 406.107 Public Notice/Fact Sheet – Page 4 – NPDES Permit No. IL0078972 Conmat – Dwyer Quarry Antidegradation Assessment NPDES Permit No. IL0078972 Stephenson County The subject facility has applied for an NPDES permit for increased discharges from a limestone quarry. Mining occurs through an open pit. Two outfalls currently exist; Outfall 001 consists of ground water and stormwater that collects in the deepest pit and will increase from 0.792 to 1.296 MGD. Outfall 002 is stormwater from other areas of the quarry and no increase is expected. Effluent is pumped from the pit to a series of settling ponds. An asphalt plant exists on site and therefore the general permit cannot be issued. The operations of the asphalt plant do not affect stormwater runoff with any process wastewater. The quarry expands about one acre per year, thereby generating more effluent. Outfall 001 discharges to Yellow Creek. Identification and Characterization of the Affected Water Body. Yellow Creek has a 7Q10 flow of approximately 19.8 cfs and is a General Use water. The stream is not listed on the 2006 Illinois 303(d) List. Yellow Creek (PWN-01) at this location is listed as impaired for primary contact uses on the Illinois Integrated Water Quality Report and Section 303(d) List – 2006. The cause listed is fecal coliform bacteria. The draft 2008 List is identical. Yellow Creek is rated as a “B” stream under the Agency’s 1996 Biological Stream Characterization (BSC) system. The stream is not listed as a biologically significant stream in the 1992 Illinois Natural History Survey Publication Biologically Significant Illinois Streams. The IDNR WIRT system lists no threatened or endangered species as inhabiting the receiving stream. Identification of Proposed Pollutant Load Increases or Potential Impacts on Uses. Load increases of dissolved and suspended solids will occur due to the increase in flow, but overall effluent quality will not change from the present condition, i.e., concentrations will be about the same. No impacts on stream uses are anticipated. Fate and Effect of Parameters Proposed for Increased Loading. Sediment load will not be greater than that coming into the receiving stream from surrounding lands. Sedimentation patterns should not be changed from those presently occurring. Purpose and Anticipated Benefits of the Proposed Activity. The existing mine is updating flow rates to reflect expansion of the quarry. Jobs will be maintained if the mine is allowed the increase. Assessments of Alternatives for Less Increase in Loading or Minimal Environmental Degradation. Capture of stormwater and groundwater contacting mined areas with settling in a pond or pit is typical treatment for limestone quarries. With adequate solids removal as required by permit conditions, the resulting effluents are benign. No alternatives exist given the characteristics of limestone quarries and the relatively good quality effluents produced. Summary Comments of the Illinois Department of Natural Resources, Regional Planning Commissions, Zoning Boards or Other Entities The Illinois Department of Natural Resources was consulted regarding threatened and endangered species issues via the EcoCAT system on December 17, 2008. It was immediately determined that no threatened or endangered species are present in the area and consultation was terminated. Public Notice/Fact Sheet – Page 5 – NPDES Permit No. IL0078972 Agency Conclusion. This preliminary assessment was conducted pursuant to the Illinois Pollution Control Board regulation for Antidegradation found at 35 Ill. Adm. Code 302.105 (antidegradation standard) and was based on the information available to the Agency at the time the draft permit was written. We tentatively find that the proposed activity will result in the attainment of water quality standards; that all existing uses of the receiving stream will be maintained; that all technically and economically reasonable measures to avoid or minimize the extent of the proposed increase in pollutant loading have been incorporated into the proposed activity; and that this activity will benefit the community at large by providing building materials and jobs. Comments received during the NPDES permit public notice period will be evaluated before a final decision is made by the Agency. RGM:djp/conmatdwyer NPDES Permit No. IL0078972 Illinois Environmental Protection Agency Division of Water Pollution Control 1021 North Grand Avenue East Post Office Box 19276 Springfield, Illinois 62794-9276 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM Reissued (NPDES) Permit Expiration Date: Issue Date: Effective Date: Name and Address of Permittee: Facility Name and Address: CONMAT Dwyer Quarry 2283 U.S. 20 BR E Hollywood Road P.O. Box 750 Freeport, Illinois 61032 Freeport, Illinois 61032 815/235-2200 StephensonCounty Discharge Number and Name: Receiving Waters: 001 Stormwater & Pit Pumpage Yellow Creek 002 Stormwater In compliance with the provisions of the Illinois Environmental Protection Act, Title 35 of Ill. Adm. Code, Subtitle C and/or Subtitle D, Chapter 1, and the Clean Water Act (CWA), the above-named permittee is hereby authorized to discharge at the above location to the above-named receiving stream in accordance with the standard conditions and attachments herein. Permittee is not authorized to discharge after the above expiration date. In order to receive authorization to discharge beyond the expiration date, the permittee shall submit the proper application as required by the Illinois Environmental Protection Agency (IEPA) not later than 180 days prior to the expiration date. Alan Keller, P.E. Manager, Permit Section Division of Water Pollution Control SAK:drgil0078972 Page 2 NPDES Permit No.