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HomeMy WebLinkAboutNC0021962_Permit Issuance_19960802• State of North Carolina Department of Environment, Health and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director August 2, 1996 Mr. Scott Eaton CITGO Petroleum Corporation P.O. Box 58 Paw Creek, North Carolina 28130 LDEHNFl Subject: NPDES Permit Issuance Permit No. NC0021962 Paw Creek Terminal Mecklenburg County Dear Mr. Eaton: In accordance with the application for discharge permit received on March 1, 1996, the Division is forwarding herewith the subject state - NPDES permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated December 6, 1983. In response to oil terminals' comments pertaining to the chlorophenol monitoring requirements in the draft permits, the Division held a teleconference with representatives from the oil terminals and their laboratories. The oil terminals' representatives had the following concerns: (1) Why was there a requirement to monitor for eight individual chlorophenols in addition to those specified in EPA Method 625; and (2) What is the proper laboratory procedure to analyze for these eight chlorophenols? After some additional data review, research, and discussion, two determinations were made. First, although all chlorophenols have the potential to cause taste and odor problems in drinking water supplies and tainting of fish tissue, the eight chlorophenols Bpi covered by EPA Method 625 are not considered to be carcinogens. Second, certain chlorophenolic compounds are likely to form first. This is significant because certain parameters can be used to "screen" the stormwater discharge for the presence of chlorophenols. Specifically, the five chlorophenols included in EPA Method 625 can be used as indicators of all chlorophenols because these five compounds would be the first to form when chlorine reacts with phenol. Therefore, EPA Method 625 will be used as an initial screen. If no chlorophenols are detected, no additional monitoring will be required. However, if one or more chlorophenols are detected at concentrations greater than 50 14/1, then the oil terminal would be required to monitor for the eight additional chlorophenols beginning with the next scheduled monitoring event and continue to monitor until the permit expired. The additional chlorophenol monitoring would include identifying and quantifying all chlorophenols present in the sample(s). If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following redeipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such a demand is made, this permit shall be final and binding. Please take notice that this permit is not transferable. Part II, E.4. addresses the requirements to be followed in case of change in ownership or control of this discharge. P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-0719 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper 't . This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local governmental permits may be required. If you have any questions or need additional information, please contact Mr. Mark McIntire, telephone number (919) 733-5083, extension 553. Sincerely, Original Signed A. Preston Howard, Jr. A. Preston Howard, Jr., P.E. cc: Central Files Mr. Roosevelt Childress, EPA Mooresville Regional Office, Water Quality Permits and Engineering Unit Mecklenburg County Environmental Protection Facility Assessment Unit Aquatic Survey and Toxicology Unit Permit No. NC0021962 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, CITGO Petroleum Corporation is hereby authorized to discharge wastewater from a facility located at Paw Creek Terminal NCSR 1784 Paw Creek Mecklenburg County to receiving waters designated as an unnamed tributary to Gum Branch in the Catawba River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective September 1, 1996 This permit and authorization to discharge shall expire at midnight on August 31, 2001 Signed this day August 2, 1996 Original Signed Ey A. Preston Howard Jr A. Preston Howard, Jr., P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit No. NC0021962 SUPPLEMENT TO PERMIT COVER SHEET CITGO Petroleum Corporation is hereby authorized to: 1. Continue to operate an existing stormwater treatment system consisting of an oil/water separator, an equilization tank, a second oillwater separator, and a diffused aeration system located at Paw Creek Terminal, NCSR 1784, Paw Creek, Mecklenburg County (See Part III of this Permit), and 2. Discharge from said treatment works at the location specified on the attached map into an unnamed tributary to Gum Branch which is classified Class WS-IV waters in the Catawba River Basin. • ROAD CLASSIFICATION PRIMARY HIGHWAY HARD SURFACE LIGHT•DUTY ROAD, HARD OR IMPROVED SURFACE SECONDARY HIGHWAY HARD SURFACE UNIMPROVED ROAD = = Latitude 35°16'52" Longitude Map # F15SW Sub -basin 03-08-34 Stream Class WS-IV Discharge Class Industrial - Petroleum Receiving Stream UT to Gum Branch Design Q episodic Permit expires 8/31/01 80°56'02" 0 SCALE 1:24 000 0 1 MILE 7000 FEET 0 1 KILOMETER CONTOUR INTERVAL 10 FEET CITGO Petroleum NC0021962 Mecklenburg County Tank Farm A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Permit No. NC0021962 During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge stormwater from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below: Effluent Characteristics Flow I Total Suspended Solids Oil and Grease2 Phenol Benzene Toluene Xylene EPA Methods 624/6253 Acute Toxicity4 Discharge Limitations Monitoring Requirements Measurement Monthly Avg. Weekly Avg. Daily Max. Frequency Monthly 45.0 mg/I Monthly Monthly Monthly 1.19 µg/I Monthly 11.0 µg/1 Monthly Semi-annually Semi-annually Episodic Sample Type Grab Grab Grab Grab Grab Grab Grab Grab Sample Location Effluent Effluent Effluent Effluent Effluent Effluent Effluent Effluent Effluent Footnotes: I Where no measurable discharge occurs, "no discharge" should be clearly noted on the submitted monthly discharge monitoring report. Flow may be monitored in one of four ways: a) Measure flow continuously, b) Calculate flow based on the area draining to the outfall, the built upon area, and the total rainfall (this method of flow measurement should not be used at facilities that have large ponds to collect surface water runoff), c) Estimate by flow measurement at 20 minute intervals during the entire discharge event, or d) Base flow on pump logs. 2 Where possible, the grab sample for oil and grease should be skimmed from the surface of a quiescent (calm water) zone. 3 EPA Method 625 includes five (5) chlorophenols. 1f one or more chlorophenol(s) is detected at concentrations greater than or equal to 50 µg/I, the permittee will be required to analyze for the eight chlorophenols (listed below) in addition to EPA Method 625. This additional required monitoring will begin with the pennittee's next scheduled monitoring event, occur on a semi-annual basis, and will last for the duration of the permit. Eight chlorophenols include the following: 3-chlorophenol, 4-chlorophenol, 2,3-dichlorophenol, 2,5-dichlorophenol, 2,6--dichlorophenol, 3,4- dichlorophenol, 2,3,4,6-Tetrachlorophenol, and 3-methyl-6-chlorophenol. 4 Acute Toxicity (Fathead Minnow, 24-hour) Monitoring, Episodic, See Part III, Condition E. There shall be no discharge of floating solids or visible foam in other than trace amounts. There shall be no direct discharge of tank solids, tank bottom water, or the rag layer. There shall be no direct discharge of tank contents following hydrostatic testing unless the benzene concentration is less than 1.19 ug/1 and the toluene concentration is less than 11 ug/1. Part III. NC0021962 E. ACUTE TOXICITY MONITORING (EPISODIC) The permittee shall conduct FIVE acute toxicity tests using protocols defined as definitive in E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. Effluent samples for self -monitoring purposes must be obtained below all waste treatment. Sampling and subsequent testing will occur during the first five discrete discharge events after the effective date of this permit. After monitoring of the fast five toxicity tests, the permittee will conduct one test annually, with the annual period beginning in January of the next calendar year. The annual test requirement must be performed and reported by June 30. If no discharge occurs by June 30, notification will be made to the Division by this date. Toxicity testing will be performed on the next discharge event for the annual test requirement. The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of Water Quality 4401 Reedy Creek Rd. Raleigh, N.C. 27607 Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test. Failure to submit suitable test results will constitute noncompliance with monitoring requirements.