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Home My WebLink AboutNC0000175_Waste Load Allocation_198502281 r � v C � 44 w' V o o O �+ .uU c�-J .� E .. t Z $4 49 a N a V (x@ 44 w •• o 4J O �4 r0 p 4J 0� o a � oI 4J (A M Vd . � (DO r= L 0 4- N L 4-J 4- 1 O Y V CO 0 �v CD N O 4-J 0 L O CO U a a co 4- q-4 U 0 r ro 4J O f V) 8 r 44 E6 U .1 t 4-)( U 44 ff ,L S`sf � Q t � � N CO1 1 ! Q U � 4J 4mf o (S;mawm OL S0I330 '7HNOIDaH) (3.LS'IdWCO QL�SMIAH3S WDINIMI)WDINIMI) A r a I � y � Q � r �i rt N � a Q 0, •� r i �r • ra a A • Request No. :2139• -----WASTELOAD ALLOCATION APPROVAL FORM ----------- -•- �-------^•--- RECEIVED. Wstw OIS441^, Division Facility Name IMC CORP " Type of Waste f: FELDSPAR MINING OCT 29 19M Status ,' f EXISTING Ica Receiving Stream- NORTH TOE RIVER wiry' Ratw�� Stream. Class ; C-TR �ItMs+i(1h, Nlartr Grot►sr Subbasin 040306 County MITCHELL Drainage Area <sq mi) : 133' Regional'Of.fice : ASHEVILLE Summer 7Q10 (cfs) 45 .Requestor DOUG FINAN Winter 7Q10 `(cfs). 55 Date of Request 2/28/85 Average Flow (efs) 270 Quad- C3.1SW 30Q2 (cfs) -_-rrr.,.,...:s:......,..---r.....-- RECOMMENDED EFFLUENT LIMITS----------------•----•-�----;....••,,_w DA AVG DA MAX Wasteflow s (mgd): 3.60 4.32. s 5-Day BOD .(mg/l): Ammonia Nitrogen (mg/1): Dissolved Oxygen (mg/1),: _ TSS (4 / D ) : .1320 ": 2640 ', •' - . Fecal Coliform (*/100ml)c PH (SU � . 6•-9 wr---rw----r----------..-r-------- COMMENTS s---••-•-r,..,.,,� .r..--.»............_--_r .»r•,...---..,,.........,. THE DISCHARGE SHALL NOT CAUSE THE TURBIDITY'OF THE RECEIVING WATERS TO EXCEED 10 NTU. IF THE TURBIDITY EXCEEDS 10 NTU DUE TO NATURAL ZONDITIONS, THE DISCHARGE'SHALL NOT CAUSE ANY INCREASE IN TURBIDITY. - TOXICITY MONITORING REQUIREMENTS AND FLUORIDE-WASTELOAD ALLOCATION ATTACHED,"' .7. _ --- ---r ------w-------- -------- y Recommended •by�_- pate Reviewed .b Toch. .Suppo" Supervisor w _ ;+ - V Date ' r^Regional Su r _ Sie.r.:: Date JR Permits 9 Engineering Date -� , ( N s AV_ A-6 N 01 - ve Q Q„04- 1.) The permittee shall conduct chronic toxicity tests on a quarterly basis using protocols defined in E.P.A. Document 60014-851014 entitled "Short -Term Methods for Estimating the Chronic -Toxicity of Effluents and Receiving Waters to Freshwater Organisms". The testing shall be performed as a Ceriodaphnia Survival and Repro- duction Test. Effluent collection will be performed twice during each test as 24 hour composite samples. Toxicity test exposure using the first composite sample will include the first three full days of testing. Exposure to the second composite sample will in- clude the last four full days of testing. Effluent samples will be taken immediately prior to disinfection, but below all other treatment processes. Ike Chronic Value (ChV) oust be greater than There will be minimally five effluent concentrations and a control exposure treatment. One effluent concentration shall equal J2.1 44**X, which represents the instream waste concentration (I.W.C.) during 7Q10 low flow conditions and daily permitted dischar a volume. The remaining concentrations shall be"3,,,G4,;�� Gl!, z s There may not be more than 20X mortality Zn- )Y -_ I.W effluent after 48 hours of exposure. .3110 Note: Failure to achieve test conditions as specified ini:the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will re- quire immediate retesting. Failure to submit-suit:bl1 test results will constitute a permit violation. 6 -5- fluoride processes (fluoride interference with other ore processing activities). Therefore, while the waste handling demands for pure quartz are -higher than for feldspar, that demand is likely to be lower than indicated by HF use information. Another factor available that points to this conclusion is that IMC which has the only operat- ing high purity quartz system, also has the lowest mass discharge of three facilities. It is true, however, that IMC's wastewater control system represents what the Regional Office considers the standard for the industry. What these points show is that there are technologies which can, when applied with a strong management commitment, effec- tively reduce the quantity of fluoride released to the receiving waters. The final issue that must be discussed in recommending a weight- ing factor, is certainly equal to those just noted: i.e.,the real world impact of the facilities receiving the allocations. In this matter we are dealing with four separate industrial corporations involved (or soon to be involved) as competitors in the same busi- ness, all located in the same general area, and all sharing a common riparian resource. Real and perceived conflicts make negotiating very difficult. Add to this a common view from all the companies that the fluoride standard is too restrictive and the recent emer- gence of the fourth competitor and you have a sensitive environment in which existing allocations must be reduced. The only way to examine this aspect of the allocation process is to calculate fluo- ride distributions for a variety of weighting factors. In doing so it will be necessary to provide the distributions- over the entire range of near term configurations: Configuration I - Unimin Corporation not producing feldspar or quartz. The Feldspar Corporation operating without the planned high purity quartz facility, Indusmin at current feldspar production, and IMC producing feldspar and high purity quartz at current levels. Configuration II - Unimin Corporation not producing feldspar or quartz, The Feldspar Corporation operating with the high purity quartz facility and Indusmin, Inc. and IMC as described in I. Configuration III - Unimin Corporation producing feldspar and quartz, and other three companies as described in I. Configuration IV - Unimin Corporation as in III, The Feldspar Corporation producing high purity quartz and the other two companies as described in I. Configuration V - Unimin Corporation as in III, The Feldspar Corporation and Indusmin, Inc. producing high purity quartz and IMC as described in_I. Configuration VI - The Feldspar Corporation, IMC, Indusmin, Inc. and Unimin Corporation as described in V and Indusmin, Inc. with a 50% expansion of the feldspar plant. The process in developing a specific allocation can be described as follows: A. Calculate an allocation factor (Af) for each facility within a specific configuration:. Af =F+Wf xQ ' where: Af = Allocation factor, F = Finished feldspar in tons per month (information supplied by the company), Wf = Weighting factor for quartz production, Q = Finished high purity quartz, tons/mo. B. Project a percentage share (PS) of available fluoride for each facility under each configuration. PS = Af x 100 SUM Af where: SUM Af = sum of all four Af's for a particular configuration. C. Calculate the specific fluoride allocation (A-lbs/day) for each company. . A= PS xAW 100 where: AW = Available wasteload to North Toe River = 574 •lbs/day. Allocations Proposed Facility AF PS A_(#/day) Configuration I Unimin 0 21181 0- 32 0 183 Feldspar indusmin 17043 26 149 IMC 27306 65530 42 100 242 574 Configuration II Unimin 0 28082 0 39 0 224 Feldspar Indusmin 17043 23 132 IMC 27306 72431 38 100 218 574 ' Configuration III Unimin 15800 19 26 109 149 Feldspar Indusmin 21181 17043 21 121 IMC 27306 81330 34 100 195 574 Configuration IV Unimin 15800 18 32 103 183 Feldspar 28081 17043 19 109 Indusmin 27306 31 179 IMC 88 330 100 574 Configuration V Unimin 15800 17 31 98 178 Feldspar Indusmin 28081 20043, 22 126 IMC 27306 91230 30 100 172 574 Configuration VI. Unimin 15800 16 28 92 161 j- Feldspar 2808 2 32604 29 indusmin 2730627 .166 55 IMC i 99630 100 - 574 Request No. : 2139, --------- ----------- WASTELOAD ALLOCATION APPROVAL FORM --- - E C-ElIT-ELL---- H' "*f Quality Division Facility Name : I MC CORP. MAY 13 1986 Type of Waste : FELDSPAR MINING Status : EXISTING *estorn krt,onal Offict Receiving Stream : NORTH TOE RIVER iWealk North. Caroling Stream Class : C-TR j -14 'Tie 4f ► Subbasin : 040306 County : MITCHELL Drainage Area (sq mi) : 13Y, 1.0 Regional Office : ARO 7Q10 (cfs) : 4i► 0.3 Requestor : DOUG FINAN Winter 7Q10 (cfs) :: 5 Date of Request : 2/28/S5 3OQ2 (cfs) : Quad : C11SW Average Flow (cfs) 2';0 2,0 ------------------------- RECOMMENDED EFFLUENT LIMITS------------�!_____________ : LITTLE BEAR N.TOE Wasteflow (mgd) : 4.32 4.32 5—Day,BOD (mg/1) a Ammonia Nitrogen (mg/1) Dissolved Oxygen (mg/1) : " A'j w. 41 t�•. w.K TSS a'(o : 1320 2640 (0.& 1320 2640 Fecal Coliform (#/100ml): ''��S (�3; q4 i pH (SU) 6-9 6-9 Fluoride (*/d) ------------------------------------------------------------------------------- 67.7 184 COMMENTS %OM•f" rACWD' �MEM& THE DISCHARGE SHALL NOT CAUSE THE TURBIDITY OF THE RECEIVING WATERS TO EXCEED 10 NTU. IF THE TURBIDITY EXCEEDS 10 NTU DUE TO NATURAL CONDITIONS, THE DISCHARGE SHALL NOT CAUSE ANY INCREASE IN TURBIDITY. FLUORIDE LIMITS BASED ON 7010 (7010-0.3 IN LITTLE BEAR CREEK) AND BACKGROUND CONCENTRATION-0.05 MG/L. TPX T SIX IX T i c�.,Un H+nNI t7RiNti.RE1� Z�M.EIU t BI 1~ � . Recommended by S-tj &9 _ 4(® Date_S 14 _ Reviewed by: Tech. Support Supervisor___ Regions visor__ Permits b gineering__1 Date_ --3jr Date__ Date___ DIVISION OF ENVIRONMENTAL MANAGEMENT May 12, 1986 MEMORANDUM TO: Arthur Mouberry Forrest Westall FROM: Randy Dodd QLL**� THRU: Meg Kerr MK SUBJECT: Effluent Limitations for Feldspar Mines, North Toe River Please find attached proposed effluent limits for three Feldspar mines which discharge to the North Toe River. TSS limits are based on current permits. Please note that allowable loadings and concentrations are considerably above current discharge levels. Fluoride loadings are based on an allowable loading of 574 #/D based on a 7Q10 of 45 cfs at the mouth of Little Bear Creek, the current standard of 1.8 mg /1, 0.05 mg /l background fluoride concentrations, and the previously defined allocation among the three dischargers. Please note that a permitted discharge by IMC Corp. to Little Bear Creek will require a fluoride limit of 67.7 # /D, based on a 7Q10 of 0.3 cfs. Please note that an additional loading of 506.3 #/D could be allocated to Feldspar and Indusmin if 67.7 #/D were allocated to IMC. Toxicity limits and monitoring requirements have also been developed for each discharger based on the instream waste concentration and recently developed Division protocol. Please advise if questions. RCD:mlt Attachment 1.) The permittee shall conduct chronic toxicity tests on a quarterly basis using protocols defined in E.P.A. Document 600/4-85/014 entitled "Short -Term Methods for Estimating the Chronic -Toxicity of Effluents and Receiving Waters to Freshwater Organisms". The testing shall be performed as a Ceriodaphnia Survival and Repro- duction Test. Effluent collection will be performed twice during each test as 24 hour composite samples. Toxicity test exposure using the first composite sample will include the first three full days of testing. Exposure to the second composite sample will in- clude the last four full days of testing. Effluent samples will be taken immediately prior to disinfection, but below all other treatment processes. 'She Chronic Value (ChV) must be greater than 1.l X. There will be minimally five effluent concentrations and a control exposure treatment. One effluent concentration shall equal 16 %, which represents the instream waste concentration (I.W.C.) during 7Q10 low flow conditions and daily permitted dischar a volume. The remaining concentrations shall be '� [ o There may not be more than 20X mortality in a�17 effluent after 48 hours of exposure. Note: Failure to achieve test conditions as specified ini:the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will re- quire immediate retesting. Failure to submit suit IE test results will constitute a permit violation. 2199 -. • _--.......__.<.<_, -------- WASTELOAD ALLOCATION APPROVAL FORM -------------------- Facility, Name : IMC Corp. ..Type of Waste FELDSPAR MINING status EXISTING Receiving Stream NORTH TOE RIVER Stream(Maas$ �--TR t , Subbasin 040306 1 County MITCHELL DraIneage Area (sq - mi ) Regional Office ARO 7Q10 (cfs) 13.9 Requeestor - ^: DOUG FINAN Winter 7Q10 (cfs) r .Date of. Reequest _ 2--2(3--('35 30Q2 (afs) G Quad ,, C115W, Average Flow (cfs ) __.,.__..------- c,..<..r.__=.,.....-- RECOMMENDED EFFLUENT LIMITS --_ -------- .�....,..------- _.... •Wasteeflow (mgd) 4..32'_ `. 5--Day BOO (m g / 1) Ammonita. Nitrogen (mg/ 1) a � Dissolved Oxygen (mg/,I).� TSS (f!D) : 1920 2640 ` ,Fel�cal calif arm, (*/100m1) PH' (.SU)' : 6-9- Fluoride (0/0 126.Arl 253.2 i _..... ...._ ......__.... ..-- __ COMMENTS. The discharge shall not causer the turbidity, o':F the receiving - �. waters to, exceed 10 `NTU. If the turbidity exceeds 10 NTU due to _ { natural background -conditions, the discharge shall not causee,acny increase in turbidity. Fluoride limit .revisead. Pree%iously based on'30g2. This limit based on 7g10. , Recommended by. -- Date....._ - Reviewed by: s i. Tech':: Support Supervisory __ . - - Date ------- Regional SupeO.visor------ ___.....»..........___..__ Dates_____ ,_•,,_,,. . �. '; Approval Is A- 1 preliminary (, ) final ` Permits & Engineering -------- ...«..„...Date,,,,_<,,,,_,,,,,.s,..,,_,, f' o )o t L., is -5-bg1�( h(,J°Y"Q, (�VA„ �s aw 3 2 4J0 = x. kA , .,.Q�,u, cQ u•e s bJ ay. -T.- 3, 14, Tr1 Z _ e-- I� y, # AD tk s�� 1 t; �.IA z ss 9S S? g ZL� 112 6.� I -ID JCL Y y Z, 6 2 s s z, t u, 4 1,1 6, 6 RECEIVED r 4 JUL 9 - 1986 TECHNICAL SERVICES BP,Ah�':Fi •� nor• J State of North Carolina Department of Natural Resources and Community Development Asheville Regional Office It James G. Martin, Governor S. Thomas Rhodes, Secretary DIVISION OF ENVIRONMENTAL MANAGEMENT • July 1, 1986 �., MEMORANDUM JUL ` TO: R. Paul Wilms, Director WATER QUALIT Division of Environmental Management SECTION Page Benton, Deputy Director Division of Environmental) Management i1 2 George Everett, Chief v Water Quality Section FROM: Roy M. Davis, Regional Supervisor^� Division of Environmental Management (r \ SUBJECT: Allocation of Fluorides Spruce Pine Mining Industries Mitchell County and i Avery County 3 u• On June 26, 1986, Mr. Mike Parker, Mr. Forrest Westall and I met with representatives of the Spruce Pine Mining Industries who ;6 are now or would in the near future discharge fluorides in their wastewater,. The meeting was held at -our request to discuss possible approaches to allocation of the total ability of the 9 North Toe River to dilute fluorides. Attached is a list of those attending. At issue are the fact that we now use 7Q10 rater than 30Q2 flow to calculate dilution which reduces from 754 lbs/day to 574 lbs/day the amount of fluorides -which may be released to the North Toe River and the desire of an existing industry to enter a market which would necessitate the release of fluorides in its' wastewater; both of which will have the effect of substantially reducing the amount of fluorides the three -present fluorides t discharges may release. International Mineral and Chemicals (IMC), Feldspar and Indusmin presently discharge fluorides and Unimin which recently purchased Harris Mining wish to discharge fluorides in its waste stream) ermit application already made. Inwmhuv &gild s 59 VGbodfin Place. P.O. Boot 370, A4wAlk N f. 28802.0370 • Telephone 700-253-3341 ;,t; .. ... ........:-.. - . ..'..fib., - � . , ,-•-..:.�•-:_ An Equal Oppon�unie�►• Ai4irinative Action Emplover- . -. - = -. - . . - - - WIN R. Paul Wilms Page Benton George Everett Memorandum July 1, 1986 Page Two f We are presently gathering production and other data which will allow us to allocate fluorides among the four dischargers. Our recently published report "Toxicity of Fluoride to Freshwater Biota" dated June, 1986, concludes that we need more data relating to acute and chronic toxicity effects of fluorides in order to consider whether or not to modify the present 1.8 mg/1 Water Quality Standard. Representatives of the Spruce Pine r mineral processing industry expressed an interest in supplying this data in the hope that it will result in an increase in the r numeric Water Quality Standard for fluorides. t During the meeting, the four industries met in our absence for a•short time. Three of the four (Unimin being the exception) informed us that they will adjudicate their permits if issued based upon present Water Quality Standards and -dilutions. All four of the industries indicate a willingness to conduct Ib acute/chronic toxicity studies in hope of achieving a relaxation of the Water Quality Standards for fluorides and will in the near future call you asking for a meeting to discuss the possibility. r There was no consensus among the industries as to how the State might allocate fluorides to those discharging to the North Toe It River. We hope in a few weeks to have developed a Waste.Load Allocation for fluorides for these industries. I should add that •; the Division is in the process of renewing IMC's, Feldspar's and •t Indusmin's NPDES Permits. y RMD:ls Enclosure xc: Forrest R. Westall {..� �-....w.u�+w-+mow-+•-:-_ - ._ «.--... •. _ -i'^. -� .«- -+.ct... .. __�d.wna•-,�.. ?Ekar a�'"GiN'.'•r"�'.'_''"r"'v_.._ ... �. •s.-� •,w,., a o,, 7�)&,Z�yl-s 1 Tnx E PAP%VrF-P-1 V::7p 4k R E ST We S'T A s h --�,bl%. :Du" ve� Ale. Z-0 )&4r o N go 6 z t-f CAR L4-i) D r L vOep J �f� %t7hi�,fs Vo��1 e ZO%4 •mac �'�rc � r� i mac. la th% �I �slO/1ls.,71r1 •s i __ k... ',` - _- f• ��tff:N'�i....��"�--- _-.. .. _ _ r..-.u3�"�_� .- �.-- •�-. - a.�. irY r++rr ^.-!ys �. + wee+- +•-'�---r-i!:� ....e+iY�a` ...._.. _ . � ,. .s .-..:a_ 7 ��••.� �' .xir.TC _T-2�.-�__� s�-sw�L'{-Jw�- - tea— .�....- _ ..3�:-}-- � _._. '� .!`YwoM1 "YII��' L' - State of North Carolina Department of Natural Resources and Community Development ....•�+= A%heville Regional Office lame (,. ;Martin, S. 11u,ma, Rhodes, Secretary DIVISION OF ENVIRONMENTAL MANAGEMENT WATER QUALITY SECTION June 27, 1986 rR. vNO,, W sec-[�()Td Mr. Andrew J. Regis, Vice -President Geology and Environmental Affairs Unimin Corporation 258 Elm Street New Canaan, CT 06840 Subject: Questionnaire Relating to Allocation of Fluoride Unimin Corporation Avery County, North Carolina Dear Mr. Regis: Pursuant to our discussion on June 26, 1986, we have developed the attached questionnaire for purposes of gathering information which will allow us to allocate the fluorides discharged to the North Toe River. I am asking for your suggestions regarding any aspect of this questionnaire. Thursday, July 3, 1986, I am going to send the questionnaire out in final form so please phone your suggestions to Mr. Mike Parker,.Mr. Forrest Westall, or me before that date. I very much appreciate your taking time to meet yesterday to discuss the issue of fluoride allocations to the North Toe River industries. I look forward to hearing from you. �iV ` P) -19a6 inn—, haner• Hurldin.r cp W'(wP hn ha,:' PO ar,, --t A,hcrillc \( ?rwna):-•„ 0 'iikph:,nc'lus:::.:.=i . Mr. Andrew J. Regis June 27, 1986 Page Two It occurs to me that it would be helpful if you started assembling the information required on the draft form for the reason that when it finally goes out I will be feeling the need for a fast turn around time. Thanks! RMD:ls Enclosure xc: R. Paul Wilms George Everett Forrest R. Westall Sincerely, Roy M. D vis, Regional Supervisor Division of Environmental Management The information provided should represent feed/production for the highest month in the past twelve or the monthly average of the highest of the previous five years. In the case of a new source we are requesting projections on the same basis as described above. This is drawn from 40 CFR 122.45(b) 2 dated July 1, 1985. Please indicate how you choose to provide this information. Additionally please indicate the number of days worked by the particular plant during the months used as a basis for the information provided. Total raw ore feed tonnage to all processes on site. tons/month Feed tonnage to all processes which utilize fluorides. tons/month Feed tonnage to feldspar recovery processes which utilize fluoride. tons/month (a) Amount of hydrofluoric acid used in this process. gallons/month (b) Percentage of HF acid in solution used. % (c) Amount of finished material produced by this process. tons/month Feed tonnage to high purity Quartz recovery processes which utilize fluorides. tons/month (a) Amount of hydrofluoric acid used in this process. gallons/month (b) Percentage of HF acid in solution used. (c) Amount of finished material produced by this process. tons/month Feed tonnage to any other recovery processes on site which utilize fluorides (please indicate type of product recovered). tons/month (a) Amount of hydrofluoric acid used in this process. gallons/month (b) Percentage of HF acid in solution used. % (c) Amount of finished material produced by this process. tons/month -2- The information provided is based upon; highest month of the 3last twelve or monthly average of the highest of the past :-welve or projections based upon above (Please - -.heck) Signature Company Represented Date a