NC0025135_INSTREAM ASSESSMENT_19881122

WDES DOCUMENT SCANNING COVER SKEET
NPDES Permit:
NC0025135
Huffman Finishing WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Compliance
Speculative Limits
Instream Assessment (67b) ,.
Environmental Assessment (EA)
Permit
History
Document Date:
November 22, 1988
This document is printed on reuse paper -ignore any
content on the reverse side

DIVISION OF ENVIRONMENTAL MANAGEMENT
November 22, 1988
MEMORANDUM
TO: Rex Gleason
THRU : Randy Dodd ALL
Trevor Clemen s
Steve Tedder
FROM: Ruth Clark
SUBJECT: Inst:ream Assessment for Huffman Finishing Company
NPDES No. NCO025135 0,30o6 �>Z
Caldwell County
SOC Request EMC WQ 88-25
Summary
Huffman Finishing Company has revised its SOC request. The
company wants to increase the flow at its facility by 0.0366 MGD
to a total of 0.150 MGD, and has been out of compliance with its
permitted flow limit of 0.110 MGD. The company is planning to add
a new knitting operation which will not generate any industrial
wastewater, but will produce an estimated 200 GPD of domestic'.
waste from eight new employees. Currently, the plant's wastewater
is approximately 4% domestic and 96% industrial. The flow
increase was analyzed using the results of toxicity tests which
have been performed at the facility. The facility has passed its
last four 48 hour acute toxicity tests, but exhibited partial
kills during three of the tests. However, the increased flow is
riot attributed to additional process wastewater and therefore
should not have a significant impact on the toxicity of the
stream. The facility has recently been issued a new permit which
requires them to perform chronic toxicity tests. This testing
should be performed at an instream waste concentration (IWC) which
reflects the SOC flow. This IWC is 76%.
Since the increased flow exceeds design capacity and is
planned as a permanent change, Huffman Finishing must apply for a
new permit. Final permit limits will then be assigned.
A request was also made to increase the phenol limit from 1.2
dig/l to 8.0 pg/l since the facility has been out of compliance
with this limit. A mass balance was performed to determine the
instream concentration of phenol at the mix point and in Lake
Hickory, a water supply. The analysis indicated that the phenol
standard for WS waters is violated in the tributary, but is pro-
tected at the intake. Since the phenol standard for water sup-
plies is based on taste and odor. (:i.e. not toxicity), protection

of the standard in the lake is adequate. Therefore, the SOC phe-
nol limit should be approved.
Anal.vsis and Discussion
Huffman Finishing Com
to the Catawba River. The
since it empties into Lake
nities of Hickory and Long
stream drains an area of 0
an average flow of 0.5 cfs
pany discharges to an unnamed tributary
tributary is a class WS-III stream
Hickory, a water source for the commu-
view. At the outfall, the receiving
.3 square miles and is characterized by
and a 7Q10 of 0.075 cfs.
A mass balance analysis for phenols was performed at a waste
flow of 0.1134 MGD (current monthly average) and at 0.150 MGD
(post-SOC). It was assumed .that the concentration of phenol
upstream of the outfall was zero, and that no dilution occurred in
the UT since the model used for the 1987 permit analysis indicated
no runoff in the reach. The calculations were performed at the
7Q10 flow, and the minimum dam release (40 cfs) was used to calcu-
late the phenol concentration in Lake Hickory. The results of the
analysis are as follows:
Site
Qw (MGD)
Phenol
(pg/1)
Mix -UT
0.1134
5.61
Mix -UT
0.150
6.05
Lake
Hickory
0.1134
0.035
Lake
Hickory
0.150
0.046
The analysis indicates that the phenol standard for WS waters (1.0
Fig/1) is violated in the tributary, but not in the lake where the
intakes are located. Thus, the phenol limit can be increased to
8.0 ug/l.
The facility has been performing 48 hour acute toxicity tests
at a chronic value greater than 90%. The facility has passed the
last four tests, but has exhibited partial kills in three of them.
The results are as follows:
Date
Mortality
03/88
P45
12/87
None
09/87
P40
06/87
P30
It is believed that the increase in flow should not have a
significant toxic impact on the stream since no new :industrial
wastewater will be generated. The facility's new permit requires
it to perform chronic toxicity tests, and this monitoring should
be continued throughout the SOC period. However, monitoring
should be done at the IWC calculated from the SOC flow rather than

the IWC written in the permit
i.ng the SOC period is 76%.
CC: Ken Eagleson
Chuck Wakild
Kent Wiggins
Steve Reid
The appropriate IWC to apply dur-

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DIVISION OF ENVIRONMENTAL MANAGEMENT
October 25, 1988
MEMORANDUM TO: Steve Tedder
FROM: D. Rex Gleason//////��
PREPARED BY: J. Thurman Horn�T`/Gw� ,"����jjj///
SUBJECT: Revised Request for Instream Assessment
Huffman Finishing Company
SOC Request EMC WQ 88-25
Caldwell County, North Carolina
Please find attached a revised request for Instream
Assessment for the Huffman Finishing Company Wastewater
Treatment Plant.
The request should be self-explanatory, but if you haveany
questions or need any additional information, please advise
Thurman Horne or me.
Attachment
JTH:se
°0r
r£CyN�CAi S11 '
, 98A
o
FS g�'4NCf;

REQUEST FOR IN -STREAM ASSESSMENT FOR 67B
NAME OF FACILITY: Huffman Finishing Co. SUBBASIN: 03-08-31
COUNTY: Caldwell REGION: Mooresville DESIGN FLOW: 0.110 MGD
RECEIVING STREAM: An unnamed tributary to the Catawba River
(Lake Hickory)
BACKGROUND DATA:
A. Why is SOC needed? (Facility is out of compliance with
which effluent limits?)
The facility is in noncompliance with limitations for flow
and phenol.
B. History of SOC requests:
1. Monthly Average waste flow prior to any SOC: 0.1134
MGD
Time period averaged: September, 1987 through August,
1988
2.
Previously
approved SOC's: N/A
3.
Flows lost
from plant
flow: 0 MGD
(facilities
that have gone off
line)
4.
Current SOC
request
flow: .0366 MGD
5.
Total plant
flow post-SOC
flow: 0.150 MGD
(sum of original
flow and SOC
flow minus
losses)
6.
Is this an
accurate flow balance
for plant? Why/why
not?
Yes. By telephone conversation with Mr. A. W.
Huffman, Jr. on October 24, 1988, it is our
understanding that the requested increase in flow from
the previously requested .125 MGD to the current .150
MGD is attributed to a production increase. Mr.
Huffman stated that he has met and discussed this
matter with George Everett.
C. Please attach DMR summary for past year for all permitted
parameters. If possible, include reports for previous
years if facility has been under SOC for more than a year.
See attachment

CURRENT SOC REQUEST:
A.
F-7
C.
D.
Request is for domestic or industrial waste?
If it is a combination, please specify percentages.
Domestic = 4%
Industrial = 96%
What type of industry? Please attach any pertinent data.
Huffman Finishing company generates industrial process
wastewater from the dyeing and bleaching of cotton and
synthetic socks. The industry falls under Federal
guidelines listed in 40 CFR Part 410 Subpart E.
The region proposes the following SOC limits:
BODS: No change
NH3: No change
D. O.: No change
TSS: No change
Fecal Coliform: No change
pH: No change
Other parameters: Phenols = 8.0 mg/1 (daily average)
Flow = .150 MGD
What is the basis for these limits?
Based on review of the last year's self -monitoring data and
considering the Company's commitment to operate the
existing facilities better than in the past, the Company's
request that the interim limitation for phenol be relaxed
to 8 mg/l appears to be reasonable.

Huffman Finishing
Summary
of Self -Monitoring
Data (monthly
averages)
Month
Q/MGD
BOD
Res/TSS
Fec. Coli.
D. O.
COD
Phenols
Sulfides
(mg/1)
(mg/1)
(#/100 ml)
(mg/1)
(mg/1)
(mg/1)
(mg/1)
87/09
.1157
27.73
33.3
10.0
7.76
346.0
<1.0
<.1
87/10
.1200
32.18
36.0
10.0
8.76
230.0
6.28
<.1
87/11
.1212
26.68
33.6
10.0
8.89
219.7
<1.55
<.1
87/12
.1080
29.45
35.3
10.0
9.24
282.5
<4.67
<.1
88/01
.1096
39.00
45.7
10.0
9.25
343.0
<1.0
<.1
88/02
.1110'
39.47
43.9
10.0
9.09
362.5
<1.2
<.1
88/03
.0056
39.43
45.6
10.0
8.58
563.7
<1.5
<.1
88/04
.1158
38.26
43.0
10.0
8.45
343.2
5.6
<.l
88/05
.113
35.20
40.4
<10.0
8.99
331.0
<5.67
<.1
88/06
.122
29.40
27.5
<10.0
8.80
230.0
3.30
<.1
88/07
.094
13.30
16.8
<45.5
8.73
106.8
<2.70
<.1
88/08
.115
24.7
18.3
64.1
8.70
138.5
<5.0
<.1
Avg.
.1134
31.22
34.9
14.5
8.76
274.7
<3.29
<.1
Total
pH
Chromium
(s.u.)
.047
6.5-7.0
.017
6.8-7.5
<.003
6.9-7.3
<.02
6.8-7.3
<.04
6.8-7.2
.063
6.8-7.2
.025
6.7-7.1
.008
6.8-7.2
.038
6.8-7.0
<.013
6.9-7.2
.013
6.5-7.3
.019
6.9-7.3
<.025
6.5-7.5

DIVISION OF ENVIRONMENTAL MANAGEMENT
July 13, 1988
MEMORANDUM
TO: Ronald McMillan
THRU: Trevor Clements oe
Steve Tedder
FROM: Ruth Clark RC
SUBJECT: Instream Assessment for Huffman Finishing Company
NPDES No. NCO025135
Caldwell County
SOC Request EMC WQ 88-25
Summary
Huffman Finishing Company has requested a first time SOC to
increase the flow at its facility by 0.015 MGD to a total of 0.125
MGD since it has been out of compliance with its flow limit of
0.110 MGD. The company is planning to add a new knitting oper-
ation which will not generate any industrial wastewater, but will
produce an estimated 200 GPD of domestic waste from eight new
employees. Currently, the plant's wastewater is approximately 11%
domestic and 96% industrial. The flow increase was analyzed using
the :results of toxicity tests which have been performed at the
facility. The facility has passed its last four 48 hour acute tox-
icity tests, but exhibited partial kills during three of the
tests. However, the increased flow is not attributed to addi-
tional process wastewater and therefore should not have a signifi-
cant impact on the toxicity of the stream. The facility has
recently been issued a new permit which requires them to perform
chronic toxicity tests. This testing should be performed at an
instream waste concentration (IWC) which reflects the SOC flow.
This IWC is 72%.
A request was also made to increase the phenol limit from 1.2
jig/1 to 3.0 ug/l since the facility has been out of compliance
with this limit. A mass balance was performed to determine the
i.nstream concentration of phenol at the mix point and in Lake
Hickory, a water supply. The analysis indicated that the phenol
standard for WS waters is violated in the tributary, but is pro-
tected at the intake. Since the phenol standard for water sup-
plies is based on taste and odor (i.e. not toxicity), protection
of the standard in the lake is adequate. Therefore, the SOC phe-
nol limit should be approved.

Analysis and Discussion
Huffman Finishing Company discharges to an unnamed tributary
to the Catawba River. The tributary is a class WS-III stream
since it empties into Lake Hickory, a water source for the commu-
nities of Hickory and Longview. At the outfall, the receiving
stream drains an area of 0.3 square miles and is characterized by
an average flow of 0.5 cfs and a 7Q10 of 0.075 cfs.
A mass balance analysis for phenols was performed at a waste
flow of 0.1.111 MGD (current monthly average) and at 0.125 MGD
(post-SOC). It was assumed that the concentration of phenol
upstream of the outfall was zero, and that no dilution occurred in
the UT since the model used for the 1987 permit analysis indicated
no runoff in the reach. The calculations were performed at the
7Q10 flow, and the minimum dam release (40 cfs) was used to calcu-
late the phenol concentration in Lake Hickory. The results of the
analysis are as follows:
Site
Qw (MGD)
Phenol
(ug/1)
Mix -UT
0.1111
2.09
Mix -UT
0.125
2.16
Lake Hickory
0.1111
0.013
Lake Hickory
0.125
0.014
The analysis indicates that the phenol standard for WS waters (l.0
ug/1) is violated in the tributary, but not in the lake where the
intakes are located. Thus, the phenol limit can be increased to
3.0 ug/l.
The facility has been performing 48 hour acute toxicity tests
at a chronic value greater than 90%. The facility has passed the
last four tests, but has exhibited partial kills in three of them.
The results are as follows:
Date
Mortality
03/88
P45
12/87
None
09/87
P40
06/87
P30
It is believed that the increase in flow should not have a
significant toxic impact on the stream since no new industrial
wastewater will be generated. The facility's new permit requires
it to perform chronic toxicity tests, and this monitoring should
be continued throughout- the SOC period. However, monitoring
should be done at the IWC calculated from the SOC flow rather than
the IWC written in the permit. The appropriate IWC to apply dur-
ing the SOC period is 72%.
CC: Ken Eagleson
Chuck Wakild
Kent Wiggins
Steve Reid

kLtf�man Finl:htnc JOC I?AC
uT CatCaoL�C, ever 7/alSF
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01P)(.172cF5)_r C&ocfS)- Cc+t•l�zr�l�+,o��)
Caa Zi RIbJ Cori . ai OLo =- ..125 lnbD_ _
- cc, = .2. Iu
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Nub{man, hgnoh,nn J JOC /?AC
�;' ur a CafGr� �lUcr 7%ll i8�
o3083z
-75
7Z-
a)-.._QW- . -.1.25 fY) bD� rFS -
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Roc : 19q r. o7 �7 2._ 1.
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tl
i
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u7- Ccdctoba, l L e/
a3OS3z,
2h2n01s {(551,tme Cup = 0
0 Ccnc. al m%X
Oup - ,D75 00 _ ,75D (OGp= ,38'75 C%S
Lp O,p 1- eOOL,) = Cmrx 010,V
L) 4 (3m,1) 3F5CO - Cm y (. Ulrz6CF�
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?AC,
71u1s8
cli : 3,mjI,(
O maw rud no n,rneff, iheie%,e Ccrrentration of phenols ci moLdh OF 5fr'eon
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C C�tC, th IQ ln;nimvm am kb�Q7C � qO e&
CupL� p P 0000 P Civee Oretean = IdOL<
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DIVISION OF ENVIRONMENTAL MANAGEMENT
June 30, 1988
MEMORANDUM TO: Steve Tedder
FROM: D. Rex Gleason L
PREPARED BY: J. Thurman Horn
SUBJECT: Request for I ream Assessment
Huffman Finishing Company
SOC Request EMC WQ 88-25
Caldwell County, North Carolina
Please find attached a request for Instream Assessment for
the Huffman Finishing Company Wastewater Treatment Plant.
The request should be self-explanatory, but if you have any
questions or need any additional information, please advise
Thurman Horne or me.
Attachment
JTH:se

REQUEST FOR FOR IN -STREAM ASSESSMENT FOR 67B
NAME OF FACILITY: Huffman Finishing Co. SUBBASIN: 03-08-31
COUNTY: Caldwell REGION: Mooresville DESIGN FLOW: 0.110 MGD
RECEIVING STREAM: An unnamed tributary to the Catawba River
(Lake Hickory)
BACKGROUND DATA:
A. Why is SOC needed? (Facility is out of compliance with
which effluent limits?)
The facility is in noncompliance with limitations for flow
and phenol.
B. History of SOC requests:
1. Monthly Average waste flow prior to any SOC: 0.1111
MGD
Time period averaged: May, 1987 through April, 1988
2. Previously approved SOC's: N/A
3. Flows lost from plant flow: 0 MGD
(facilities that have gone off line)
4. Current SOC request flow: .015 MGD
5. Total plant flow post-SOC flow: 0.125 MGD
(sum of original flow and SOC
flow minus losses)
6. Is this an accurate flow balance for plant? Why/why
not?
Yes. The applicant has requested a relaxed interim
flow limitation to accommodate fluctuations in flow
experienced during the past year and anticipated to
continue during the term of the SOC. The Company is
also planning to add a new knitting operation which
will not generate any process water, but will produce
an estimated 200 gpd of domestic wastewater from an
anticipated eight (8) additional employees. This
additional 200 gpd has been included in the above
requested flow increase.
C. Please attach DMR summary for past year for all permitted
parameters. If possible, include reports for previous
years if facility has been under SOC for more than a year.
See attachment

CURRENT SOC REQUEST:
A
C.
Request is for domestic or industrial waste?
If it is a combination, please specify percentages.
Domestic = 4%
Industrial = 96%
what type of industry? Please attach any pertinent data.
Huffman Finishing Company generates industrial process
wastewater from the dyeing and bleaching of cotton and
synthetic socks. The industry falls under Federal
guidelines listed in 40 CFR Part 410 Subpart E.
The region proposes the following SOC limits:
BODS: No change
NH3: No change
D. O.: No change
TSS: No change
Fecal Coliform: No change
pH: No change
Other parameters: Phenols = 3.0 J(g/l (daily average)
Flow = .125 MGD
D. what is the basis for these limits?
Based on review of the last year's self -monitoring data and
considering the Company's commitment to operate the
existing facilities better than in the past, the Company's
request that the interim limitation for phenol be relaxed
to 3'(g/l appears to be reasonable.

Huffman Finishing Company
Summary of
Self -Monitoring
Data
(monthly
averages)
Month
Q/MGD
BOD
Res/TSS
Fec. Coli.
Chlorine D.
O.
COD
Phenols
Sulfides
Total
pH
Chromium
87/05
.1088
37.70
45.0
10.0
9.22
284.7
<1.0
<.1
<.03
6.9-7.4
87/06
.1018
35.27
41.4
10.0-
8.75
221.5
<1.65
<.1
<.009
7.0-7.5
87/07
.0894
36.00
42.6
10.0
8.12
273.7
<3.7
<.1
<.05
6.9-7.6
87/08
.1174F
34.23
39.9
10.0
7.58
293.7
<1.0
<.1
<.012
6.9-7.4
87/09
.1157F
27.73
33.3
10.0
7.76
346.0
<1.0
<.l
.047
6.5-7.0
87/10
.1200F
32.18
36.0
10.0
8.76
230.0
6.28
<.1
.017
6.8-7.5
87/11
.1212F
26.68
33.6
10.0
8.89
219.7
<1.55
<.1
<.003
6.9-7.3
87/12
.1080
29.45
35.3
10.0
9.24
282.5
<4.67
<.1
<.02
6.8-7.3
88/01
.1096
39.00
45.7
10.0
9.25
343.0
<1.0
<.1
<.04
6.8-7.2
88/02
.1110F
39.47
43.9
10.0
9.09
362.5
<1.2
<.1
.063
6.8-7.2
88/03
.1156F
39.43
45.6
10.0
8.58
563.7
<1.5
<.1
<.025
6.7-7.1
88/04
.1158F
38.26
43.0
10.0
8.45
343.2
5.6
<.1
.008
6.8-7.2
AVERAGE
.1111
34.61
40.4
10.0
8.64
297.0
<2.51
<.1
<.027
6.5-7.6
UNIT
MGD
lbs/day
lbs/day
#/100 ml
mg/l
mg/l
lbs/day
ug/l
mg/1
mg/l
S.U.