NC0000353_Wasteload Allocation_19861112

NPDES DOCUMENT !;CANNING COVER SHEET
NC0000353
The Feldspar Corporation
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation'`
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
November 12, 1986
Thing document Ass printed oa rewse paper - ignore any
content on the ir•Nreirisie side

Facility Name:
Existing Q
Proposed Q
NPDES WASTE LOAD ALLOCATION
Engineer Date Rec. #
. .2/-204'
Date 2/2/(
Permit No.: wG0600 3_,c3
Pipe No.: 0 o / County: 1/4-,, , 7 447
/
Design Capacity (MGD) : Industrial (% of Flow) : /DOS Domestic (% of Flow) :
Receiving Stream: auo4v74 704;
Reference USGS Quad: to )J G
Class: C.- 7t Sub -Basin:
/ 15g o 6 DS7-o3-46,
(Please attach) Requestor: j'- < ^'AN . Regional Office
(Guideline limitations, if applicable, are to be listed on the back of this form.)
Design 'Ibmp.:
7Q10 (cfs) Lf 3
Drainage Area (mi2): , Z 6
Winter 7Q10 (cfs) S�
Avg. Streamflow (cfs) :
30Q2 (cfs)
Location of D.O. minimum (miles below outfall):Slope (fpm)
Velocity (fps) :
K1 (base e, per day):
2t
K2 (base e. per day):
Effluent
Characteristics
Monthly
Averagely,
(f Comments
(_411))
1470My1q,
' 6.e
-Y>
D. L5�
r-/
IPA
( 1�)
4y:.
.mot- n �
�.
,lusr► /�J
ht .LLL, t �t... -
( %
4 L.. l,�L
�' o`"r d .
mil„ 4.Q�(1 .,w i' c a
,.,,g o.,., -1 t
.,.� ,...
�„
Origina A11 c tip 2
Revis Al a, on
Conf tioriLry,
Q
L7dB
y : 4�d l
.caW
Comments:
S-8Y
4
Effluent 4
Characteristics
:-'onthly
Lverage
Comments
C-t_
txD
„.. c. v-t...-
o c
44CCcA
1:
y
Reviewed By:
�� �..1(2
4
Date:_______ /C
PLOTTED

For Appropriate Dischargers, List Complete Guideline Limitations Below
Effluent
Characteristics
Marrttrly
Average
Maximum Daily
,.
Comments
T .5s
t 3-4 6- • y
1
NP !3 p i.
4•--(7- 47
A)elor//9T,-J
...`!u s 1/i-i.s
...4_
Flax- l t./A 5
c1T 9• /
S S8" • a-__
„S
7-t) ft..- 1,o
07 r� w S T�
�� T'o� . -� sT�-,�,
i
Type of Product Produced
Lbs/Day Produced
(fluent Guideline Reference

L.
WASTELOAD ALLOCATION APPROVAL FOAM
Request No. :2105
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Subbas1n
County
Regional Office
Aequestor
Date of Request
Quad
FELDSPAR CORP
FELDSPAR MINING
EXISTING
NORTH TOE RIVER
C-TP
000306
MITCHELL
ASHEVILLI�::
D0JC FINAN
2/21/85
C11SW
Wasteflow (mgd):
5-Day BUD (mg/1):
Ammonia Nitrogen (mg/1):
Dissolved Oxygen (mg/1):
TSS <#/D ):
Fecal Colifnrm (0/100ml):
PH (SU):
� Y� �� �t ���1� ��
= ^~ ^_ �� � , � =
V�*,w, 01^+1i,v [x"i^/vr
+vast'ar*�OfwC4
`
Drainage Area (sq mi)
Summer 7$10 (cfs)
Winter 7W10
Average Flow
RECOMMENDED EFFLUENT LIMITS
DA AVC DA MAX
3.50 '1.00
6-9
(cfs)
(cfs)
(cfs)
� 126
� 43
� 55
� 260
---------------------------------- COMMENTS ---------------------------------
THE DISCHARGE SHALL NOT CAUSE THE TURBIDITY OF THE RECEIVING WATERS TO
EXCEED 10 NTV. IF THE TURBIDITY EXCEEDS 10 NTU DUE TO NATURAL CONDITIONS'
THE DISCHARGE SHALL NOT CAUSE ANY INCREASE IN TURBIDITY.
TOXICITY MONITORING PElUIAEMENTS AND FLUORIDE WASTELOAD ALLOCATION ATTACHED.
Recommended by
il..;, 121, (7 (il)
Reviewed by:
Tech. Support Supervisor
Regional S or T01
Permits & Engineering
Date
Date
Date
Date

iset
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. The Chronic Value (ChV) must be greater than
%. There will be minimally five effluent concentrations and a
control exposure treatment. One effluent concentration shall equal
11 %, which represents the instream waste concentration (I.W.C.)
during 7Q10 low flow conditions and daily permitted disc ar&e volume.
y
The remaining concentrations shall be 5 2.2 b %
There may not be more than 20% mortalityin a�lleast.9821p ffluent
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 suitable teat results
will constitute a permit violation.

.... .'may:, �.. � w• 4�C A �..:il'.. ...
-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
Configuration
II
Configuration III
Configuration IV
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.
- 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.
- Unimin Corporation producing feldspar and quartz,
and other three companies as described in I.
- Unimin Corporation as in III, The Feldspar
Corporation producing high purity quartz and the
other two companies as described in I.

-6-
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 x Q
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 0 0
Feldspar 21181 32 183
Indusmin 17043 26 149
INC 27306 42 242
65530 100 574
Configuration II
Unimin 0 0 0
Feldspar 28082 39 224
Indusmin 17043 23 132
INC 27306 38 218
72431 100 574
Configuration III
Unimin 15800 19 109
Feldspar 21181 26 149
Indusmin 17043 21 121
IMC 27306 34 195
81330 100 574
Configuration IV
Unimin 15800 18 103
Feldspar 28081 32 183✓
Indusmin 17043 19 109/
IMC 27306 31 179.'
88230 100 574
Configuration V
Unimin 15800
Feldspar 28081
Indusmin 20043
IMC 27306
91230
17 98
31 178
22 126
30 172
100 574
Configuration VI
Unimin 15800 16 92
Feldspar 2808 28 161
Indusmin 2 3 2gS64 29 166
IMC 27306 27 155
99630 100 574

Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Bubb asin
County
Regional Office
Requestor
Date of Request
Quad
Request No. : 2105
WASTELOAD ALLOCATION APPROVAL FORM ---��������������--
^~^�v-u�� r����
-------
Water Division
FELDSPAR CORP.
FELDSPAR MINING
EXISTING
NORTH TOE RIVER
C-TR
040306
MITCHELL
ARO
DOUG FINAN
2/21/85
C11SW
Drainage Area (sq
7010 (cfs)
Winter 7010 (cfs)
2002 (cfs)
Average Flow (cfs)
VvekemKetara|D;hco
------------------------- RECOMMENDED EFFLUENT LIMITS -------------------------
:
Wasteflow (mgd)
5-Day BOD (mg/1) :
Ammonia Nitrogen (mg/1)Dissolved Oxygen (mg/1)
:
TSS G*Nt! 2�>�) : 1568.4
Fecal Colifo'�^ (#/i00ml): (5�07—/)
pH (SU) : 6-9
Fluoride (#/d) : 218
3136.8
�
SEE ATTACHED MEMO. 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 AND BACKGROUND CONCENTRATION=0.05 MG/L.
TSS LIMITS PER CURRENT PERMIT.
TOXICITY LIMITS AND MONITORING REQUIREMENTS ALSO ATTACHED.,
}
Recommended by
Reviewed by:
Tech, Support Supervisor_____
Regional
zsor____
Permits & Engineering___
Date_10 4� lezo
_
6
Date_

DIVISION OF ENVIRONMENTAL MANAGEMENT
May 12, 1986
MEMORANDUM
TO: Arthur Mouberry
Forrest Westa l l
FROM: Randy Dodd V.?.
THRU: Meg Kerr {,AK
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/1 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

`, ^
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Subbasin
County
Regional Office
Requestor
Date of Request
Quad
WASTELOAD ALLOCATION APPROVAL FORM
: INDUSMIN CORP.
: FELDSPAR MINING
: EXISTING
: NORTH TOE RIVER
: C-TR
: 040306
: MITCHELL
: ARO
: DOUG FINAN
x 2/14/85
: C11SW
Wasteflow (mgd)
5-Day BOD (mg/1)
Ammonia Nitrogen
Dissolved Oxygen
TSS (#/D)
Fecal CoIiform
pH (SU)
Fluoride (#/d)
Drainage Area
7Q10 (cfs)
Winter 7010 (cfs)
30Q2 (cfs)
Average Flow
Request No. : 2105
(sq mi) : 133
: 44
: 55
:
(cfs) : 264
RECOMMENDED EFFLUENT LIMITS
:
: 2.02
:
(mg/1) :
(mg/1) :
: 1237.6 2479.2
(#/100ml): 1q(0
: 6-9
: 172
COMMENTS
SEE ATTACHED MEMO. 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 AND BACKGROUND CONCENTRATION=0.05 MG/L.
TSS LIMITS PER CURRENT PERMIT.
TOXICITY LIMITS AND MONITORING REQUIREMENTS ALSO ATTACHED.
Recommended by Date
--:dj
Reviewed by:
Tech. Support Supervisor____ Date
Regional Supervisor_ ____ Date
Permits & Engineering Date__ _

~ ..
Aequemt Nm. 2105
......................... ........ ................ ........ .... .... .... ........ ........ WA. STELOAD ALLOCATION APPAOUAL FOAM -------~~-------T--~--
Facility Name
TUpe nf Waste
Status
Flee ceiving Stream
S%ream Class
Subbasin
County
AeQional Office
Aequestor
Date oT, Aequemt
FELDSPAA COAP.
FELDSPAA MININC
ED<ISTINQ
NOATH TOE AIVEA
W-TA
040306
WE I...
AAO
DOUG F%NAN
2~21-85
C11SW
Dpainoq]e Apea (sq mi12z
70.10 <cPs) 28.6
Winter 7Q10 (ofs>
30(A 2 1cfs) � 79
Average Flow (cfs>
Wastef1ow (mgd> : 3.5
5-Day BOD (mQ/l)
Ammonia NitroQen (mQ/1> �
Dissolved mg/l) �
TSS (#/d) 1568.XI 3136.8
Feca1 Cmlifmrm (#/100ml)�
pH (SU6-9
Flunridm 150.S 800.6
The disoharge yha11 not oaume the turbiditU of the receiving
waters tm exceed 10 NTU. %f the turbidity exceeds 10 NTU due to
natural backQround conditions. the discharQe sha1l not cause any
increase in turbidity.
F1uoride 10mit revised. Ppevious111 based on 30q2. This limit based
nn 7q10.
___
Aecommended bU Date__________
Tetc; h. Suppmrt
Approval is < > preliminary ( ) final