## STATE OF MISSOURI 

# DEPARTMENT OF NATURAL RESOURCES MISSOURI CLEAN WATER COMMISSION



# MISSOURI STATE OPERATING PERMIT In compliance with the Missouri Clean Water Law, (Chapter 644 R.S. Mo. as amended, hereinafter, the Law), and the Federal Water Pollution Control Act (Public Law 92-500, 92 nd Congress) as amended, Permit No.: MO-0000710 Owner: Harbison - Walker Refractories Company Address: 400 Fairway Drive, Moon Township, PA 15108 Continuing Authority: Same as above Address: Same as above Facility Name: Harbison - Walker Refractories Company ñ Vandalia Plant Address: Central Avenue & Booker Street, Vandalia, MO 63382 Legal Description: SEE PAGE TWO Receiving Stream: SEE PAGE TWO First Classified Stream and ID: SEE PAGE TWO USGS Basin & Sub-watershed No.: SEE PAGE TWO is authorized to discharge from the facility described herein, in accordance with the effluent limitations and monitoring requi rements as set forth herein: 

### FACILITY DESCRIPTION

SEE PAGE TWO
This permit authorizes only wastewater discharges under the Missouri Clean Wate r Law and the National Pollutant Discharge Elimination System; it does not apply to other regulated areas. This permit may be appealed in accordance with Section 644.051 .6 of the Law. May 27, 2005 Effective Date Doyle Childers, Director, Department of Natural Resources Executive Secretary, Clean Water Commission May 26, 2010 Expiration Date Edward Galbraith, Direct or of Staff, Clean Water Commission MO 780-0041 (10-93)Page 2 of 5 Permit No. MO-0000710


### FACILITY DESCRIPTION (continued)
Outfall #001 ñ Clay & Non-clay Refractories / Clay Mining - SIC #3297, #3255 Non-contact cooling water / Mixer washout / Storm water runoff / Settling basin. Design flow is 230,000 gallons per day. Actual flow is dependent upon precipitation. Legal Description: SE o, NE o, SW o, Sec 8, T52N, R5W, Audrain County Receiving Stream: Unnamed tr ibutary to Shady Creek (U) First Classified Stream a nd ID: Shady Creek (C) (00172) USGS Basin & Sub-watershed No.: (07110008-010001)
Outfall #002 ñ Clay Mining / Brick Finishing ñ SIC #3297; #3255 Stormwater runoff / Settling basin. Design flow is 180,040 gallons per day. Actual flow is dependent upon precipitation. Legal Description: NW o, NW o, SW o, Sec 8, T52N, R5W, Audrain County Receiving Stream: Unnamed trib utary to Spencer Creek (U) First Classified Stream and ID: Spencer Creek (C) (00095) USGS Basin & Sub-watershed No.: (07110007-030001)
Outfall #003 ñ Clay Mining / Brick Finishing ñ SIC #3297; #3255 Design flow is 221,000 gallons per day. Actual flow is dependent upon precipitation. Legal Description: SE o, SW o, SW o, Sec 8, T52N, R5W, Audrain County Receiving Stream: Unnamed tr ibutary to Shady Creek (U) First Classified Stream a nd ID: Shady Creek (C) (00172) USGS Basin & Sub-watershed No.: (07110008-010001)PAGE NUMBER 3 of 5 A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS PERMIT NUMBER MO-0000710 The permittee is authorized to discharge from outfall(s) with seri al number(s) as specified in the application for this permit. The final effluent limitations shall become effe ctive upon issuance and remain in effect until e xpiration of the permit. Such discharges shall be controlled, limited and monitored by the permittee as specified below: FINAL EFFLUENT LIMITATIONS MONITORING REQUIREMENTS

OUTFALL NUMBER AND EFFLUENT PARAMETER(S) UNITS DAILY MAXIMUM WEEKLY AVERAGE MONTHLY AVERAGE MEASUREMENT SAMPLE FREQUENCY TYPE Outfall #001 & #002 - Note 1 Flow Total Suspended Solids Oil and Grease Temperature Sulfate Chloride Aluminum - Dissolved Settleable Solids Chromium - Dissolved pH ñ Units MGD mg/L mg/L

°F mg/L mg/L mg/L mL/L/hr

mg/L

SU *
80 15 90°

* 860 0.75 1.5

*

*** *
60 10

* 860 0.75 1.0

*

*** once/quarter** 24 hr. estimate once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab once/quarter** grab Outfall #003 ñ Note 1 Flow Total Suspended Solids
Settleable Solids pH ñ Units MGD mg/L
mL/L/hr SU *

*
1.5

*** *

*
1.0

*** once/quarter** 24 hr. estimate once/quarter** grab once/quarter** grab once/quarter** grab MONITORING REPORTS SHALL BE SUBMITTED QUARTERLY ; THE FIRST REPORT IS DUE October 28, 2005

. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VI SIBLE FOAM IN OTHER THAN TRACE AMOUNTS. B. STANDARD CONDITIONS IN ADDITION TO SPECIFIED CONDITIONS STATED HEREIN , THIS PERMIT IS SUBJ ECT TO THE ATTACHED Part I STANDARD CONDITIONS DATED October 1, 1980 and August 15, 1994 , AND HEREBY INCORPORATED AS THOUGH FULLY SET FORTH HEREIN. MO 780-0010 (8/91) 

### A. EFFLUENT LIMITATIONS AND MONI TORING REQUIREMENTS (continued) * Monitoring requirement only. ** Sample once per quarter in the months of March, June, September & December. *** pH is measured in pH units and is not to be averaged. The pH is limited to the range of 6.0-9.0 pH units. Note 1 - Report as no-discharge when a discharge does not occur during the report period.

### Page 4 of 5 Permit No. MO-0000710
C. SPECIAL CONDITIONS 1. This permit may be reopened and modified, or alternatively revoked and reissued, to: (a) Comply with any applicable effluent standard or limitation issued or approved under Sections 301(b)(2)(C) and (D), 304(b)(2), and 307(a) (2) of the Clean Water Act, if the effluent standard or limitation so issued or approved: (1) contains different conditions or is otherwise more stringent than any effluent limitation in the permit; or (2) controls any pollutant not limited in the permit. (b) Incorporate new or modified effluent limitations or ot her conditions, if the result of a waste load allocation study, toxicity test or other information indicates ch anges are necessary to assure compliance with Missouriís Water Quality Standards. (c) Incorporate new or modified effluent limitations or ot her conditions if, as the result of a watershed analysis, a Total Maximum Daily Load (TMDL) limitation is deve loped for the receiving waters which are currently included in Missouriís list of waters of the state not fully achieving the stateís water quality standards, also called the 303(d) list. The permit as modified or reissued under this paragraph shall also contain any other requirements of the Clean Water Act then applicable. 2. All outfalls must be clearly marked in the field. 3. Permittee will cease discharge by connection to areawide wast ewater treatment system within 90 days of notice of its availability. 4. Changes in Discharges of Toxic Substances The permittee shall notify the Director as soon as it knows or has reason to believe: (a) That any activity has occurred or will occur which woul d result in the discharge of any toxic pollutant which is not limited in the permit, if that discharge will ex ceed the highest of the following "notification levels:" (1) One hundred micrograms per liter (100 ug/L); (2) Two hundred micrograms per liter (200 ug/L) for acr olein and acrylonitrile; five hundred micrograms per liter (500 ug/L) for 2,5 dinitrophenol and for 2- methyl-4, 6-dinitrophenol; and one milligram per liter (1 mg/L) for antimony; (3) Five (5) times the maximum concentration value re ported for the pollutant in the permit application; (4) The level established in Part A of the permit by the Director. (b) That they have begun or expect to begin to use or manufacture as an interm ediate or final product or byproduct any toxic pollutant, which was not reported in the permit application. 5. Report as no-discharge when a discharge does not occur during the report period.

### Page 5 of 5 Permit No. MO-0000710 C. SPECIAL CONDITIONS (continued) 6. Water Quality Standards (a) Discharges to waters of the state shall not cause a violation of water quality standards rule under 10 CSR 20- 7.031, including both specific and general criteria. (b) General Criteria. The following general water quality criteri a shall be applicable to all waters of the state at all times including mixing zones. No water contaminan t, by itself or in combination with other substances, shall prevent the waters of the stat e from meeting the following conditions: (1) Waters shall be free from substances in suffi cient amounts to cause the formation of putrescent, unsightly or harmful bottom deposits or prevent full maintenance of beneficial uses; (2) Waters shall be free from oil, scum and floating debris in sufficient amounts to be unsightly or prevent full maintenance of beneficial uses; (3) Waters shall be free from substances in suffici ent amounts to cause unsightly color or turbidity, offensive odor or prevent full maintenance of beneficial uses; (4) Waters shall be free from substances or conditions in sufficient amounts to result in toxicity to human, animal or aquatic life; (5) There shall be no significant human health h azard from incidental contact with the water; (6) There shall be no acute toxicity to livestock or wildlife watering; (7) Waters shall be free from physical, chemical or hydr ologic changes that would impair the natural biological community; (8) Waters shall be free from used tires, car bodies, appliances, demolition debris, used vehicles or equipment and solid waste as defined in Missouri's Solid Waste Law, section 260.200, RSMo, except as the use of such materials is specifically permitted pursuant to section 260.200-260.247.