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HomeMy WebLinkAboutNCS000583_Application_20150401Please print or type in the unshaded areas only Form Approved. OMB No. 2040-0086. FORM U.S. ENVIRONMENTAL PROTECTION AGENCY I. EPA I.D. NUMBER F A 1100,530811 'Ai D GENERAL INFORMATION1 Permits Program GENERAL Consotidated (Read the "Genera+ Instructions" before starting.) LABEL TE GENERAL INSTRUCTIONS It a preprinted label has been provided, affix �\ \\ Review it in the designated space. Review the inform.. ation carefully; if any of it is incorrect, cross through it and enter the correct data in the appropriate fill—in area below. Also, if any of the preprinted data is absent (the area to the FACILITY �` \\ \` \� \ \ \ \\ left of the label space lists the information `\ \ PLEASE PLACE LABEL IN THIS SPACE \\`\\ �\ \ \ that should appear), please provide it in the below. If the label is proper fitand correct, complete and correct, you need not complete. Items 1, 111, V, and VI !except V!-8 which 419 e P VI FACILITY \ V1. LOCATION ti \ � \\ \ \� must be completed regardless). Complete all items If no label has been provided. Refer to the instructions for detailed item descrip- tions and for the legal authorizations under which this data is collected. 11. POLLUTANT CHARACT[nISTICG INSTRUCTIONS: Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer "yes" to any questlnns, you must submit thin Until and the supplemental farm listed in the parenthesis following the qustion. Mark "X" in the box in the third column if the supplemental form is attached. If you answer "no" to each question, you need not submit any of these forms. You may answer "no" if your activity - from requirements; see Section C of the instructions. See also, Section D of the instructions for definitions of bold—faced terms. is excluded permit SPECIFIC QUESTIONS rEs MARK Ho 'X'ARK ��"� ATTACHE SPECIFIC QUESTIONS Yes Ho 'X' ATTACH eta A. Is this fatuity a publicly owned treatment works B. Does or will this facility lefther existing or proposed) include a concentrated animal feeding eperattsn or which results ina discharge to waters of the U.S.? X aquatic animal production facility which resuhs in a X (FORM 2A1 !b ,+ dichharge to waters of the U.S.? (FORM 2B) C. is this a facility which Currently results in died arges D. is this a proposed facility other than those described i X to waters of the O.S. other than Those described in X in A or B above) which will result in a discharge to 23 2b n A or B above? (FORM 2C) a waters of the U.S.? (FORM 20) E. Does or will this facility neat, stare, or dispose of F. Do you or will you inject at this facility industrial or municipal effluent below the lowermost stratum con- hazardous wanes? (FORM 3) X taining, within one quarter mile of the well bore, X z. 24 ac underground sources of drinking water? (FORM 4) _ „ 32 „ o you or will you inject at this facility arty produced- other fluids which are brought to the surface H. Do' you or will you inject at this facility fluids for spa - water or in connection with conventional oil or natural gas pro- eial processes such as mining of sulfur by the Frasch Process, solution re of minerals, in situ c ' duction, inject fluids used for enhanced recovery of. oil or natural gas, or inject fluids for storage of Liquid X , or energy? fossil"fuel, or recovery of geothermal energy? tFO X h droCarbons? (FORM 4) - ,• :! ab M (FORM 4I 1. Is this actfity a proposed stationary source which is J. Is this facility a proposed stationary Source which Is one of the 28 industrial categories listed in the in. NOT one 'of the 28'industrial categories -listed in'the - structions and which will potentially emit 100 tonsinstructions vand which wilt potentially emit 250 tons X per year of any air pollutant regulated' under the X per year of any, air pollutant regulated under the Clears Clean Air Act and may affect or be located in an Air Act and may affect or be touted in anzttairhment attainment area? (FORM 5) d2 area? (FORM'5) •a + .a Ill, NAME OF FACILITY .� SKIP Metallix Refining IV. FACILITY CONTACT ' A. NAME & TITt.E flasi. first. +it iitlV) - a. PtIot4E (allu Curl, d Itb.) 2 I I I John Santos, Operations Manager 252 558 8215 +! db +b !! 'v2 !! I! 16 V. FACILITY MAILING ADDRESS A. STREET OR P.O. BOX - - 3 251 Industrial Boulevard Al B. CITY OR TOWN C.STAT O. ZIP CODE 4 Greenville NC 27834 Vi. FACILITY LOCATION A. STREET, ROUTE NO_ OR OTHER SPECIFIC IDENTIFIER 51 251 industrial Boulevard B. COUNTY NAME Pitt ab Q. CITY UR TOWN D.STATE E.ZIP CODE #LtS�Sft . 6 Greenville C I 1 t ( 27834 EPA Form 3SIO-1 (8-90) PAWr INII ICn Con" TWP CRrnUT VI I. SiC CODES 14•digit, in order of pi A. FIRST B. SECOND (sPecily) a I I (specify) 7 le ie 3 41 19 Precious Metal Recovery from scrap 1� s C. THIRD •D. FOURTH C (speeily) (specify) 7 -74 S 9 IS r6 Vill. OPERATOR INFORMATION A, NAME B. Is the name Listed In Item Vlil-Aalso the ` g Metallix Refining, Inc. owned YES F rta _ 1� r6 SS C. STMTUS OF OPERATOR (Enter the anpropriatr tettcrinto rite answer box; if "Ot;ier", specify.) D. PHONE (area Code & no,) F 3 FEDERAL M = PUBLIC (uthet titan fedetat ur state) P (s(,ecif i) S = STATE O = OTHER (specify) A 732 2281 P = PRIVATEl -ie�.484 s'"' E. STREET OR P.O. BOX 251 Industrial Boulevard 26 F CITY OR TOWN 0 5TAT 11 %fr ecine IX. INDIAN LAN D is the facility located on Indian lands? rB Greenville NC 27834 F-1 YES W IVO 1. - .r .3 •r _ al X. EXISTING ENVIRONMENTAL PERMITS A. NPDES (Discharges to Surface Water) D. Pso (Air Emissions from Proposed Sources) c c 9 INI DIP] Air Permit 09.3141108 a. Ute (Underground injection of Fluids) E. OTHER (Speeif)') - c T 1 T (specify) 9 lul 1 9 IS 16 Ir 1 - 30 IS - 30 C. RCRA (Ha.-ardous Wastes) E. OTHER (specify) , T C 1 fspecij}�) j 9 R 9 Ie ao Is Ie Ir sa Is 0C le v XL MAP Attach to this application a topographic map of the area extending to at least one mile beyond property,bounderies. The map" ust shgw r the outline Of the facility, the, location of each of its existing and proposed intake and discharge.,structures, each of its hazardous waste treatment, storage,'or;disposal facilities, and each well where. it injects fluids undergrotind.:Include,all springs,'iivers and other.surfac� water bodies in the map area. See instructions for'precise requirements. X11. NATURE OF BUSINESS (provide a brief description Soo Attchod Plant Doseripton XIII. CERTIFICATION (see instructions) J certify under penalty of law that ! have personally examined and am familiar with the information submitted in this application and all attachments and that, based on my inquiry of those persons immediately responsible for obtalning the information contained in the application, 1 believe that the information is true, accurate and complete. ! am aware that t re are significant penalties for submitting false information, including the possibility of fine and imprisonmen A. NAME & OFFICIAL TITLE (type or print) B. SIG P U C. DATE SIGNED John Santos, Operations Manager 7 COMMENTS FOR OFFICIAL USE ONLY C - ,� le EPA Form 3510-1 (8.90) Form 2F ` NPDES EPA Washington, QC 204ti0 for Permit To Discharge Stormwater Paperwork Reduction Act Notice Public reporting burden for this application is estimated to average 28.5 hours per application, including time for reviewing instructions. searching existing data sources, gathering and maintaining the data needed, and completing and teviewing the collection of information. Send. comments regarding the burden estimate, any other aspect of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to: Chief, Information Policy Branch, PM,223, U.S. Environmental Protection Agency, 401 M St.. SW, Washington. DC 20450, or Directur. Office of Information and Regulatory Affairs, Offiee of Management and Budget, Washing -on. DC 20503. .d...A "-- awl N.. •-.A For each outfall. list the latitut]e A. Outfall Number lisi ant] +On +LUOE Oi IL$ IpGirIV�+ B. latitude lV u+a nc , C. Lon itude - D. Reeeiving Water name 35.f 7403 - .361 3 UT Ixlr P,�rker Creek if. improvements A Are you now required by any Federal. State, or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes. but is not limited to, permit conditions. administrative or enforcement orders, enforcement compliance schedule letters, stipula'ions. court orders. and grant or loan conditions. I I ( 4. final t. Identification of Conditions. 1 2. Affected Outfalls Acreements_ Etc. I number I source of dischar a 3. Brief Description of B_ You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under way or which you plan. indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction. Attach a site map showing topography (or indicating the outline of drainage areas served by the outfall(s) covered in the application it a topographic map is unavailable) depicting the facility including: each of its intake and discharge structures: the drainage area of each storm water outfall: paved areas and buildings within the drainage area of each storm wetet outfa0, each known past or present areas used for outdoor storage or disposal of signifioant materials, each existing structural control measure to reduce pollutants in storm water runoff. materials loading and access areas, areas where pesticides, herbicides. soil conditioners and fertilizers are applied; each of Its hazardous waste treatment, storage or disposal units (including each area not required to have a RCRA permit which is used for accumulating hazardous waste under 40 CFR 252.34): each well whets fluids from the taciity are injected underground; springs, and other surface_ water bodies which receive storm water dischar es from the fattili o._. , „t z Continue on Page EPA Form 3310-2F (11-90) A. For each outfall, provide an estimate of the area (include units) of impervious surfaces (including paved areas and building roofs) drained to the outfall, and an estimate of the total surface area drained by the outfall. Outlall Area of Impervious Surface Total Area Drained Outfall Area of Impervious Surface Total Area Drained (provide units) _Number(provide .Numner 1 + 1 4.42 acres j B. Provide a narrative description of significant materials that are currently or in the past three years have been treated, stored or disposed in a manner to allow exposure to storm water; method of treatment, storage, or disposal; past and present materials management practices employed. in the last three years. to minimize contact by these materials with storm water runoff; materials loading and access areas; and the location. manner. and frequency in which pesticides. herbicides, soil conditioners, and fertilizers are applied. See Process and Site Description which is attached. C For each cutla:, provide the location and a description of existing structural and nonstructural control measures to reduce pollutants in storm water runclf: and a description of the treatment the storm water receives, including the schedule and type of maintenance for control ang treatmentm he ultimalt ilisposal of any solid or fluid Outfall Ust Codes from Number Treatment Table -t 1 None V. Nonstormwater Discharcles A. I certify under penalty of law that the outfall(s) covered by this application have been tested or evaluated for the presence of norstormwater d,schar es. and that all nonstormwater discharges from these outfall(s) are identified in either an accompanying Form 2C r Form li •i o f r he outfall. Name and Official Title (type or print) Signature Date Signed John Santos, Operations Manager B. Provide a descr:pnon of the method used. the date of any testing, and the onsite drainage points that were directly observed during a test. See Attached Process and Site Description for discussion of non -storm discharge evaluation VI. Si nificant L#Oks or Spills Provide existing information regarding the history of significant leaks or spills of toxic or hazardous pollutants at the facility in the Iasi three years, including the approximate date and location of the spill or leak, and the type and amount of material released. There have been no known significant leaks or spills at the facility in the past three years. FPA Fnem Altin.9F rl+_cm Pin. �p of a Continue on Pace 9 A.B.C. & 0: See instructions before proceeding. Complete one set of tables for each outfall. Annotate the outfa►i number in the space provided. Tables VII-A. VI1 I, and VII-C are included on separate sheets numbered VII-1 and Vll-2. E. Potential discharges not covered by analysis - Is any pollutant listed in Table 2F-2 a substance or a component of a substance which you currently use or manufacture as an intermediate or final product or byproduct? Ye ci ; all hgellutants below) No (o to Section Vlll) See attached Tables 1 and 2 showing matrials known or expected to be on site based on process analysis or process knowledge. Metallix does not expect any of these materials to be present in stormwater discharges from the facility unless they are naturally occurring at the site. Vill, Yes !;.'sr res-'ts oelc+,t MX No (o to Section 1X) IX. Contract Analysis Yes .No (go to Section X) A. Name B. Address C. Area Code.B Phone No. ! D. Pollutants Ana!yzed A Name & Official Title (type orpnnt) B. Area Code and Phone No John Santos, Operations Manager -\,bll94 22%` C. Signature U. Uate Signed EPA Form 3510 2F/ (11.90) Page 3 of 3 Not Available at this time vit. umclta( a inTO(R1alIVr1 1-Ulrt"'USU rrvr+• WQIWE v — • v.•.. Part A - You rnust provide the results of at least one analysis for every pollutant in this table Complete one table for each outtalt. See instructions for additional details. Pnitutan• and CAS Number (if available) Maximum Values (iPGli!d? ynits) Average Values (include units) Grab Sample Taken During Flow -weighted First 30 Minutes Composite Number of Storm Events Sampled Sources of Pollutants Grab Sample Taken During First 30 Minutes Flow -weighted g Composite Oi! and Grease c,ological Oxygen Demand (BO05) Chemical Oxygen Gernand (UUUI y Total Suspended Solids (I SS) Total Kleldahl Nitrogen Nitrate plus Nitrite Nitrogen Ota• cti Minimum Maximum Part B - L:s: each pca.utart :rat is amrtec in an effluent guioeane which the facility is subject to or any ool!utant : s:ed ir, the facility s N POES permr, for as process wastewater (if the facility is operating under an existing NPDES permit;. Compiete one table for each outfali. aee ni iir r n for i n it n r m n Maximum Values 1I Average Values Number Poic-apt (include uric; I (include units) of a^c! Grab Sample Grab Sample i Storm ?aicen During i Flow -weighted Taken During Flow -weighted Events , First u 9 i First 30 CC,- t, nufes Cemposite Minutes Composite Sampled Sources of Pcllu;ants ( I i l i i - r 1 l I I I i i Continue on Reverse EPA Form 3510-2F (11.90) r"tjv -' Not Available at this time r-« - • •a-•�r,..,,....,«�^,. Iwa cr•-c, 'Cr-s, anu cr-% uwi you Know or nave reason to Delieve is present. See the instructions for additional details and requirements. Complete one table for each outfall. Pollutant and CAS Number (if available) Maximum Values (include units) Average Values (include units) Number of Storm Events Sampled Sources of Pollutants t3rab Sample Takes 30 Minutes Flow -weigh Composite Grab Sample Taken t 30 Minutes Flow -weighted Composite I i ! i i I I I I I i ` I i I I i I I i I i I I i I I I i I j I I i i i 1 I I , I Part D - Provide data for the storm eventsI which resulted in the maximum values for the flow weictitted com osits sample. 1. Date of Storms Event 2. Duration of Storrs in minutes 3. Total rainfall during starrrr event in inches 4. Number of hours between beginning of storm meat- ured and end of previous measurable rain event S. Maximum floe rate during rain event (gallons/minute or s snits 6. Total flow from rain event (gallons or s units 7. Season sample was P taken 6. Form of Precipitation (rainfall, snowmeit) 9. Provide a description of the method of flow measurement or estimate. Table 9: List Of Conventional and Non-Conventiona) Pollutants Site m Table 2F-2 Known or Expected to be Present --i Ex ected to be Present in Stormwater Runoff Parameter Bromide No Color� No Yes_ M_ Culrcentrations from wildlife Fecal Coliform Yes —Naturall occurring ItaTo K edahl Nitrogen Yes —Naturall Occurring — ehicle Traffic Oil acid Greaso Yes —F= Yes — From Lawn FertiliLer Phosphorus Yes — Naturall Occurring Sulfate Aluminum, Total Occurri Yes — Naturallyn Barium, Total Yes — Naturally Occurrin Boron, Total No Cobalt, Total No Yes — Naturally occurring Iron, Total Man anese, Total Yes — Naturally Occurrin Tin, Total No Titanium, Total No Metallix Refining Site Evaluation for Stormwater Permit Application RST Engineering, PLLC Process Description, Metallix Refining Metallix Is a specialty company that recovers and precious metals from various types of industrial and commercial waste products. Some of the precious metal is refined to high purity for sale, and some is sold at lower purity to others for refining and further processing. The precious metals recovered include gold, silver, palladium, platinum, and rhodium. The sources of the raw rnalerials used in Metallix's processes are diverse industries manufacturing and/or recycling materials used by consumers on a daily basis. Examples of the types of products involved, but by no means a comprehensive list of them, include auturrwlive, lure china, phutography, medical imaging, consumer electronics, and jewelry. The raw materials received include dry solids, sludges containing both solid and liquid fractions, and liquids. These materials are purchased based on the precious metal content of the material and the seller is paid based on the amount of precious metal that can be recovered. The different raw materials are processed through the plant based on their physical and chemical characteristics. There are many variations possible in the processes used, but the following characterization is typical: Solid Materials Materials such as sludges, film, wiping rags from the manufacture of fine china, and other solid materials that contain precious metals are processed in high temperature furnaces in the absence of oxygen. The ash from these furnaces is sent to milling where it is reduced to a fine powder that may be blended, assayed and sold. Selected lots may be sent to the Liquids Department where it is dissolved and the precious metals plated out. Selected materials may also be melted and forrrred Into 1119ot,s, which are sold. The 1'fne dust from this process, a potential air pollutant, is captured in a high (>99%) efficiency bag filter and is returned to the process. A liquid scrubber cleans the exhaust gasses in accordance with the plant's air quality permit. Liquid Materials Liquid materials such as spent plating baths from gold or silver plating operations are processed to recover the traces of precious metals remaining. The may be plated out, or may be separated chemically by selective precipitation and filtration. The sludges and filters are processed through the furnaces. Spent liquids are treated to remove any other metals, such as copper or arsenic that may be present. The resulting sludge is disposed of as a hazardous waste. If the residual liquid contains cyanide, it is shipped off site for treatment and disposal. Residual liquids that are not hazardous wastes and that meet the criteria tributary Parker Creek in the Tar River Basin. The grassy area of the site is not impacted by any industrial activity. A broad drainage swale is located through the grassy area that collects rainfall runoff and conveys it to the north property line. Since this drams an area not impacted by industrial activity, and since it is a grassed drainage feature, it is not being listed as a stormwater outfall point. All of the stormwater that may be impacted by industrial activity discharges to the drainage ditch along the east side of the property. The paved areas and roof surface areas are drained to drop inlets, which in turn discharge to the drainage ditch. The point where this ditch leaves the property at the northeast corner is being considered the slurrrrwater uutfall point. Since all of the potentially impacted stormwater discharges through this point, it is the only outfall point listed (Outfall 1). A copy of the property map from the Pitt County Register of Deeds office, with the new stack and building extension added for modeling purposes for the air quality pe►r►ilt, is attached for reference. Evaluation for Non -Storm Discharges During a site visit on September 18, 2014, a careful inspection of all the sources of wastewater on the site was conducted. None of these sources discharge to the ground or to any drainage system that can discharge to the stormwater collection and discharge system. The exterior of the buildings were inspected and no storage of raw materials, finished products, intermediate products, or wastes was noted. One potential source of a non -storm discharge was noted and investigated. This was a condensate trap on the exterior of the main building. Some steam condensate occasionally dripped from the steam vent pipe onto the ground. There was, however, no runoff from that point to the drainage ditch as all of the water was soaking into the ground. Also, there was no channel from that point to the ditch, which would have indicated that discharges routinely occur. Based on these observations, it was concluded that there was no non -storm discharge to Outfall 1. There are no vehicle maintenance operations conducted on site that could result in the discharge of pollutants to the stormwater drainage system. Tables 1 and 2 below list parameters that are either known or expected to be on the site (Table 1), or have been detected in samples from process solutions on the site (Table 2). Many of these parameters are naturally occurring and are expected to be present in the runoff from the site naturally. The tables attempt to identify these materials. Metallix does not expect many of the materials detected in the process liquid analysis to ever be detected in runoff from the site because of the lack of potential exposure to rainfall. Note also that this list should not be considered complete. Other materials may be detected on later samples because different scrap sources may be used. Likewise, many of the parameters listed may not be detected on later samples for the same reason. 0 Table 2 Analysis of List of Materials, Mostly Metals, Known to be r Raw Materials PresentOn Site by Y Process Liquids a, u...._. Ate -Silver No Yes - AI -Aluminum No As -Arsenic No Au -Gold No B-Daron _ Yes - f Ba Barium - NQ Be-Ber It No Bi-Bismuth —� Yes - Ca -Calcium _ ___ Nb Cd-Cadmium No Co -Cobalt No Cr-Chromium Yes Cu-Co er Yes - Fe -Iron No Ga-Gallium , ,^ No nesium Yes - eybdenum anese bium NoNo Noel F Noium horns Yes - ed ladium NoNo No_inum NoRu-uthenium Sb-Antimo_ nY_ Se -Selenium Sn-Tin---- Sr-Strontrum Ti Tit�- TI-Thallium- Zn-Zinc--nc - Zr-Zirconium Present in Stormwater Runoff pWurrirI I I Cz, - ,vmu -.. No No Yes - Naturall OuQu►mncg No No No No yes - Naturally Occun inc No Metallix Refining Site Evaluation for Stormwater Permit Application RST Engineering, PLLC Process Description, Metallix Refining Metallix is a specialty company that recovers and precious metals from various types of industrial and commercial waste products. Some of the precious metal is refined to high purity for sale, and some is sold at lower purity to others for refining and further processing. The precious metals recovered include gold, silver, palladium, platinum, and rhodium. Tho sources of the raw materials used iin Metallix's processes are diverse industries manufacturing and/or recycling materials used by consumers on a daily basis. Examples of the types of products involved,.but by no means a comprehensive list of them, include automotive, fine china, photography, medical imaging, consumer electronics, acid jewelry. The raw materials received include dry solids, sludges containing both solid and liquid fractions, and liquids. These materials are purchased based on the precious metal content of the material and the seller is paid based on the amount of precious metal that can be recovered. The different raw materials are processed through the plant based on their physical and chemical characteristics. There are many variations possible in the processes used, but the following characterization is typical; Solid Materials Materials such as sludges, film, wiping rags from the manufacture of fine china, and other solid materials that contain precious metals are processed in high temperature furnaces in the absence of oxygen. The ash from these furnaces is sent to milling where it is reduced to a fine powder that may be blended, assayed and sold. Selected lots may be sent to the Liquids Department where it is dissolved and the precious metals plated out. Selected materials may also be melted and formed into ingots, which are sold. The free dust riom this process, a potential air pollutant, is captured in a high (>yy%) efficiency bag filter and is returned to the process. A liquid scrubber cleans the exhaust gasses in accordance with the plant's air quality permit. Liquid Materials Liquid materials such as spent plating baths from gold or silver plating operations are processed to recover the traces of precious metals remaining. The may be plated out, or may be se arated chemical) selective precipitation and filtration. The sludges and filters are processed through the furnaces. Spent liquids are treated to remove any other metals, such as gppper or ajgenic that may be present. The resulting sludge is disposed of as a hazardous waste. If the residual liquid contains ', it is shipped off site for treatment and disposal. Residual liquids that are not hazardous wastes and that meet the criteria established by Greenville Utilities are discharged to the public sewers after testing and approval. Raw Material and Intermediate Product Handling It is very important that the raw materials received are handled properly to insure that they are processed in the most efficient manner to allow the recovery of the precious metals they contain. Raw materials are received by truck and are unloaded at a covered loading dock and are stored inside the building where they are staged for processing. No raw materials are stored outside or in an uncovered area where they may be contacted by rainfall. Intermediate products are also handled totally inside the. building with le possible exceptions. The first exception is the � bacrh�,ouses. captured dust contains precious metals and it is returned to the pruc;ess su that these metals can be recovered. The handling of the dust, however, creates the possibility that the some of the dust may be contacted by rainfall. The baghouse dust is discharged into a closed container underneath the baghouse. Each container is picked up and moved into the building as it becomes full. It is possible, however, that during the switching of containers, a small amount of dust may escape and be discharged to the ground. If this occurs, then it could be contacted by rainfall and be washed into the stormwater discharge. The blowdown from the iq AWL sc bber—S that control the emissions from the furnaces o captured and is currently returned to the process where it is evaporated. Normal practice is to store the captured liquid inside the building, but it has, on rare occasion, been stored outside for short periods of time. This raises the potential that any residue oaAhe stows container could be washed off by rainfall and be discharged with the storm water. Future flows of the scrubber blowdown will increase as the new furnace achieves full operation, so Metallix is investigating the feasibility of discharging the scrubber blowdown to Greenville Utilities. Empty Containers Empty containers that held raw materials are normally stored inside the building. On rare occasion, however, some have been stored outside. These containers are normally clean, but if any residue of the raw material were present, it could be contacted by rainfall and introduce a pollutant into the stormwater runoff. Site Description The Metallix site is located at 251 industrial Boulevard, Greenville, NC. The site coordinates are LAT, 35.64611 LON,-77.3613. The site occupies 14.82 acres, of which 4.42 acres are covered with roads, parking lots, and buildings. The impervious percentage is 28.8%. The remainder of the site is a grassy field that is mowed for appearance and security reasons. I he site drains to ditches on the west and oast sides of the site, which then drain to a ditch along the north side of the site. This drainage ditch system is part of an area -wide ditch system that is tributary Parker Creek in the Tar River Basin. The grassy area of the site is not impacted by any industrial activity. A broad drainage swale is located through the grassy area that collects rainfall runoff and conveys it to the north property line. Since this drains an area not impacted by industrial activity, and since it is a grassed drainage feature, it is not being listed as a stormwater outfall point. All of the stormwater that may be impacted by industrial activity discharges to the drainage ditch along the east side of the property. The paved areas and rour surface areas are drained to drop inlets, which in turn discharge to the drainage ditch. The point where this ditch leaves the property at the northeast corner is being considered the stormwater outfall puirit. Since all of [tie pulentially impacted stormwater discharges through this point, it is the only outfall point listed (Outfall 1). A copy of the property map from the Pitt County Register of Deeds office, with the new stack and building extension added for modeling purposes for the air quality permit, is attacl ied fur refeteiic;e. Evaluation for Non -Storm Discharges During a site visit on September 18, 2014, a careful inspection of all the sources of wastewater on the site was conducted. None of these sources discharge to the ground or to any drainage system that can discharge to the stormwater collection and discharge system. The exterior of the buildings were inspected and no storage of raw materials, finished products, intermediate products, or wastes was noted. One potential source of a non -storm discharge was noted and investigated. This was a condensate trap on the exterior of the main building. Some steam condensate occasionally dripped from the steam vent pipe onto the ground. There was, however, no runoff from that point to the drainage ditch as all of the water was soaking into the ground. Also, there was no .channel from that point to the ditch, which would have indicated that discharges routinely occur. Based on these observations, it was concluded that there was no non -storm discharge to Outfall 1. There are no vehicle maintenance operations conducted on site that could result in the discharge ur pullutarits to the stormwater drainage system. Tables 1 and 2 below list parameters that are either known or expected to be on the site (Table 1), or have been detected in samples from process solutions on the site (Table 2). Many of these parameters are naturally occurring and are expected to be present in the runoff from the site naturally. The tables attempt to identify these materials. Metallix does not expect many of the materials detected in the process liquid analysis to ever be detected in runoff from the site because of the lack of potential exposure to rainfall. Note also that this list should not be considered complete. Other materials may be detected on later samples because different scrap sources may be used. Likewise, many of the parameters listed may not be detected on later samples for the same reason. Go, }SIB: earth meters ?GG GG Sile drainage Didyrdrn Fur Metdllix Refining A perimeter ditch captures all the drainage from the site and carries it north to Parker Creek, a tributary in the Tar River Basin. The site is generally flat with the drainage from the unpaved portions flowing to a drainage swale that slopes from South to North near the center of the site. Roof drains from the buildings are collected and discharged to the perimeter ditch along the east side of the site. The paved areas have stormwater collection drains that captures stormwater and discharges it through underground pipes to the perimeter ditch along the east of the site. RECEIVED OR 01 2015 DENR-LAND QUALITY STORIOWATER PERMITTING Go earth feet 700 l3 meters 200 Site drainage Diagimn for Melallix Refining A perimeter ditch captures all the drainage from the site and carries it north to Parker Creek, a tributary in the Tar River Basin. The site is generally flat with the drainage from the unpaved portions flowing to a drainage swale that slopes from South to North near the center of the site. Roof drains from the buildings are collected and discharged to the perimeter ditch along the east side of the site. The paved areas have stormwater collection drains that captures stormwater and discharges it through underground pipes to the perimeter ditch along the east of the site.