NC0005312_Wasteload Allocation_19940427

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0005312
PERMITTEE NAME: Chatham Manufacturing, Incorporated
FACILITY NAME: Chatham Manufacturing, Incorporated
Facility Status: Existing
Permit Status: Modification
Major Minor
Pipe No.: 001
Design Capacity: 4.0 MGD*
Domestic (% of Flow): 5 %
Industrial (% of Flow): 95 %
Comments:
* This is the total permitted flow. Mod will send 0.025 MGD of
remediated GW to the treatment plant with no increase in permitted
flow. See attached information.
RECEIVING STREAM: Yadkin River
Class: C
Sub -Basin: 03-07-02
Reference USGS Quad: C 15 NE
County: SmTy
Regional Office: Winston-Salem Regional Office
(please attach)
Previous Exp. Date: 5/31/93 Treatment Plant Class:
Classification changes within three miles:
None rL
Requested by: Gre Nizich Date: 3/15/94
Prepared by: Date:
Reviewed by: Date:
79 g
III
Modeler
Date Rec.
#
Mww
"s1L-s114
'Title
Drainage Area (mi2 ) g 7() Avg. Streamflow (cfs): J3 f
7Q10 (cfs) 3/4 Winter 7Q10 (cfs) 4 sp 30Q2 (cfs)
Toxicity Limits: IWC 1. % Acute hroni• /i
Instream Monitoring:
,flfl, SUN, sEP, DEC
Parameters
Upstream Location: at least 100 feet upstream from effluent
Downstream Location: at least 300 feet downstream from effluent, before Jonesville Creek Tributary
Parameters:�Temp, Disolved Oxyen, Conductivity,6
,..a.,......,,;
RecammcndcdiLimits
wai54deruv _ 4 Om6 d
BOD5 (lb/day):
TSS (lb/day):
pH (SU):
Oil and Grease (mg/1)
COD (lb/day):
Fecal Coliform (/100m1):
Chromium (lb/day):
Phenols pb/day):
•
Arseni.. _
Toluene
Chromium
Ethylbenzene
Lead
Mercury
Selenium
Fluorene
Barium
1,1 Dichloroethane
Benzene (c)
Chloroform (c)
Daily Max.
1749 (53,y,v,,)
4435
6-9
60
26596
400
26 (78oug/1)
26
fl ni.tOr
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
Monthly Average
887
2230
30
13298
200
13
13
All the following parameters should be monitored (using an EPA approved method to a detection level o
ppb) quarterly to coincide with the whole effluent toxicity monitoring. In'additiun, recommend APAM.
Comments:
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parr1,fy is or,
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DIVISION OF ENVIRONMENTAL MANAGEMENT
MEMORANDUM
To:
From:
Subject:
March 15, 1994
Ruth Swanek, Supervisor
Instream Assessment Unit
Greg Nizich Sti'
NPDES Permits Unit
Permit Modification
NPDES Permit #NC005312
Chatham Manufacturing (03-07-02)
Surry County
I have just received a mod from the applicant to add treated, contaminated groundwater to
their effluent. Unfortunately, this one was out to notice, now the cycle starts over. Please
make this a priority if possible. I am requesting additional monitoring and treatment
information from the facility and will forward a copy to IAU upon receipt.
Attachment
cc: Permit File

ATTACHMENT 4. PRODUCTS RECOVERED
Compound
bis(2-ethylhexyl)phthalate
T,1dichloroethane
--,1 dichloroethene
1,1,1 trichloroethane
varsol
1,2 dichloroethene
tetrachloroethene
trichloroethene X
benzene
&i--rr-butyl phthal ate
4ethylbenzene
vfluorene
naphthalene
phenanthrene N
tetrachloroethene
J toluene
Concentration
(mg/1)
Above Ground Tank Area
0.011*
0.010
0.006
0.006
free product*
Drum Cleaning Area
0.079*
0.140*
0.041*
Power Plant Area
0.072*
0.021
0.015
0.25*
0.74*
0.067*
0.010*
0.015
Equalization Basin Area
State Groundwater
Standard (mg/1)
0.003
0.7
0.007
0.2
detection limit
0.0007
0.0028
0.001
0.7
0.029
detection limit
detection limit
detection limit
0.0007
1.0
arsenic 0.014 0.05
vbarium 2.3* 2.0
4chloroform 0.036* 0.00019
chromium 0.64* 0.05
1,1 dichloroethane N ; 0.033 0.7
1,1 dichloroethene 47* 0.007
di-n-butylphthalate \ 0.031 0.7
Y lead 0.26* 0.015
,imercury 0.0008 0.0011
selenium 0.007 0.05
1,1,1 trichloroethane ' 1,000* 0.2
*level exceeds State groundwater standard
X i r1o� 1��Ird
i' S=, Iis4d 13u} nV S -en1,1 4

ATTACHMENT 4.A. ALTERNATIVES TO SURFACE WATER DISCHARGE
Note that our proposed discharges are indirect discharges to surface
waters in the sense that we are proposing to route the discharges through our
on -site wastewater treatment plant. As far as treatment at the contamination
sites, an oil/water separator will be provided at the Above Ground Tank Area
to remove free varsol, and pretreatment at some of the other sites in the form
of carbon adsorption or metals precipitation may be added if it appears to be
necessary.
There seem to be three alternatives to discharging to surface waters
through our treatment plant: these are discharging to the Town of Elkin's
wastewater treatment facility, using a subsurface non -discharge system, or
using a surface non -discharge system.
Regarding the first alternative, discharging to the Town's treatment
plant is effectively no different than discharging to our own, since the type
of treatment employed is basically the same at each. Our system is probably
in fact better suited to the discharge from an air stripping standpoint, since
we have aerated equalization and activated sludge as opposed to the Town's
trickling filter system.
Regarding the second and third alternatives, there is a lack of suitable
area in which to install these types of systems. The Above Ground Tank, Drum
Cleaning, and Power Plant Areas are paved and/or high traffic areas,
precluding the installation of spray irrigation or subsurface non -discharge
systems. There is limited space in the Equalization Basin Area, but the
groundwater is too shallow in that area for either a spray irrigation or
subsurface system to be effective. Chatham does have some land available
several miles away, but to pump and haul the wastewater to this site would be
impractical.
In summary, the most effective, convenient, and economical method of
handling our contaminated groundwater appears to be pumping it to our existing
on -site wastewater treatment plant, with pretreatment as necessary.

ATTACHMENT 4.B.
The information requested in part 4.B of the application form is currently
being prepared in the form of a corrective action plan which we are scheduled
to submit to the Groundwater Section by March 11.
ATTACHMENT 4.C.
The summary of analytical results requested in part 4.0 of the application
form can be found in an August 31. 1992 report entitled 'Hydrogeological
Investigation of Chatham Manufacturing. Inc.' and a September 30, 1993 report
entitled 'Supplementary Hydrogeological Investigation of Chatham
Manufacturing, Inc.,' both of which were submitted to the Groundwater Section
of DEM.
ATTACHMENT 4.D.
Removal efficiencies will be assumed to be 90-100% for all contaminants. The
VOC's should be completely stripped in the equalization and aeration basins of
the on -site wastewater treatment plant, and the readily biodegradable
compounds should be almost completely degraded by the wastewater treatment
plant's biological treatment. Pretreatment will be installed to achieve at
least 90% removal efficiency for those contaminants that are not amenable to
treatment by the on -site wastewater treatment plant.
16WA I Ill]

•
FINISHING
UMA
ESOU
BUTLER PLANT f•
ATTACHMENT 5, 6 1
DRUM
CLEANING
AREA
• WAREHOUS
FIBER RECLAMATION
MAIN MILL
!AREHOUSE
EXTRUSION
"FP!' `ire,
�} fNatlCf
0
DRUM
CQ STORAGE
CYA-S714.
BASIN}
•
c
Solid lines are
existing sewer line!
to the on -site WWTP.
Dashed lines are
proposed tie-ins to
1 o the existing lines.
TER
TREATME T
FA IWTY
Effluent to
Yadkin River

•
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Request #
Chatham Manufacturing, Incorporated
NC0005312
Industrial - 95% Domestic-5%
Existing
Renewal
Yadkin River
C
030702
S urry
Winston-Salem
Greg Nizich
3/15/94
C15NE
RECEIVED
N.C. Dept. of EHNR
APR 7 1994
Winston-Salem
7786 Regional Office
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
870
314
450
1390
1.9
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The last WLA is completed on 5/21/93; the present requested WLA is the sam with the
exception to Groundwater Remediation. Recommendations remained the same exceponitoring
requirements for all parameters observed in the monitoring wells. Toxicant analysis concluded all
pollutants (which have standards) have allowable concentrations above the maximum predicted
effluent concentration (due to the high flow within the Yadkin River); therefore monitoring only
was recommended. f died Oil * credo I, w,, f, Recnmn/e iA #Pf *+5rate( bb pretvewtrn errf) .
***A reopener clause should be placed in the permit to allow for additional limits on the
parameters listed on page 3 or other toxicants should the facility fail its whole effluent t0Y
toxicity tests.
/1(1o} , r1 w;it . vrmv-t o uk- G: v} �k G
�o a
Special Schedule Requirements additional comments from Reviewers:.�"
QQGs arc h f ftpc- /hs/ di d /ra leek_ if�w
IZb wt. ,his (2 ehy//xxy phlhati/6. ? A -,
Recommended by:
Reviewed by
f
Instream Assessment: C v nd Date: i/q/q1
Regional Supervisor: hy »7 J- Date: 1.1-/--er4
Permits & Engineering: /�,v �� U Date: #17`4`
RETURN TO TECHNICAL SERVICES BY: MAY 0 4 1994

w
Type of Toxicity Test:
Existing Limit:
Recommended Limit
Monitoring Schedule:
TOXICS/METALS/CONVENTIONAL PARAMETERS
Chronic (Ceriodaphnia) P/F Qrtrly
1.9%
1.9%
Mar, Jun, Sep, Dec
Existing Limits
4411 1ti..-/-J : y, p�,y U/ Daily Max. Monthly Avg.
BOD5 fib/day): 1749 887
TSS (1b/day): 4435 2230
pH (SU): 6-9
COD (lb/day): 26596 13298
Sulfides (lb/day): 52 26
Chromium (lb/day): 26 (780ug/1) 13
Fecal Coliform (/100m1): 200
Phenols (lb/day): 26 13
Recommended Limits
_r Monitoring
4- oine CJ Daily Max. Monthly Average WQ or EL Frequency
BOD5 (lb/day): 1749 887 EL
TSS (lb/day): 4435 2230 EL
pH (SU): 6-9 WQ
Oil and Grease (mg/I) 60 30 EL 2/month
COD (lb/day): 26596 13298 EL
Fecal Coliform (/100m1): 200 WQ
Chromium (lb/day): 26 (780ug/1) 13 EL
Phenols (lb/day): 26 13 EL
Limits Changes Due To:
SOP II.C.5.c.
Parameter(s) Affected
Oil and Grease and all monitoring
Parameters on page 3.
Parameter(s) are water quality limited. For some parameters, the available load capacity of the immediate
receiving water will be consumed. This may affect future water quality based effluent limitations for additional
dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

•
3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: at least 100 feet upstream from effluent
Downstream Location: at least 300 feet downstream from effluent, before Jonesville Creek Tributary
Parameters: Temp, Disolved Oxyen, Conductivity, BOD5
Special instream monitoring locations or monitoring frequencies:
All the following parameters should be monitored (using an EPA approved method to a detection level o
ppb) quarterly to coincide with the whole effluent toxicity monitoring. In addition, recommend APAM.
Parameter Requirement
Allowable is greater than the predicted Concentration for the
Arsenic
Toluene
Chromium
Ethylbenzene
Lead
Mercury
Selenium
Fluorene
Barium
1,1 Dichloroethane
Benzene (c)
Chloroform (c)
—bis(2-ethylhexyl)phthalate (c) -- monitor
No standard available for the following parameters:
- oroethene monitor
Tetrachlor • - , : - monitor
Trichloroethene monitor
Naphthalene
Phenanthrene
Varsol
1,1 Dichloroe
Di-n- • - - phthalate
t 1 Trichloroethane
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
•
• or
monitor
monitor
monitor
monitor
Maximum Observed Conc.
in Monitoring Wells
following parameters:
14ug/1
15ug/1
640ug/1
15ug/1
260ug/1
0.8ug/1
7ug/1
250ug/1
2300ug/1
33ug/1
72ug/1
36ug/1
11 ug/1
• ug/1
140ug/1
41 ug/1
740ug/1
67ug/1
free product
47000ug/1
31ug/1
000,000ug/1
»o need- - mtu for j rvf /4-6 . -f d fr i edJ Sftdci/
5ern-� an rweJ _:4-P,4444 5`-zooid Jae 60f/i c c e1 4
/74 jilt:/T- ?M.onI ►3v O1v7)t,
`c-OCI w► i i Le. e. !v Cn f
f1ntb
�� v.-s,•Jle

4
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes (/ No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No 1/
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
�e„ „Le4 — -�-s GL. a-itL
droZg.fs#1,4_, „Lie
,yourt.,-
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _Y_ (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

Facility Name (I'it ,'i tj I a nvtt� c/i -
Permit # Ale0OO53/a Pipe # 00/
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is /. / % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
/11ar, J u it , S� i , Dr . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
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 single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management 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 and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 314 cfs
Permitted Flow MGD
IWC I.i %
Basin & Sub -basin YAh 030711a
Receiving Stream Y4 d L✓ , n Ave e
County S,; rrN
Recommended b
Dane 4
///14
QCL PIF Version 9/91

Page 1
Note for Michelle Wilson
From: Greg Nizich
Date: Fri, Mar 25, 1994 2:42 PM
Subject: Chatham Manufacturing
To: Michelle Wilson
I spoke with Rick Hiers at the facility and he said the Corrective action Plan that they will be
submitting will only address the treatment method proposed for the contaminated GW. He
said the data previously submitted identified all parameters that were detected at the plant. Do
you need anything else before sending the WL through for approval?

l(owi 1(e
Con(. USiny
Qp
Chatham Manufacturing, Incorporated
NC0005312 Yadkin River 030702
4 mgd
314. 7Q10
Parameter Standard Allowable Effluent Dchrg Conc.
µg/I µg/I ug/1
Arsenic 50.0 2587.17 1.4
Toluene 11.0 569.18 1.5
Chromium 50.0 2587.17 64
ethylbenzene 3100.0 160404.46 1.5
Lead 25.0 1293.58 26
Mercury 0.012 0.62 0.08
Selenium 5.0 258.72 0.7
fluorene 1300.0 67266.39 25
Barium 2000 103486.75 230
1,1 dichloroethane 528 27320.50 3.3
Benzene a.) 71.4 16076.50 7.2
Chloroform (c) 5.7 1283.40 3.6
bis(2-ethylhexyl)phthalate(c) 1.8 405.30 1.1
1,2 dichloroethene X 7.9
tetrachloroethene X 14
trichloroethene X 4.1
naphthalene NS 74
phenanthrene NS 6.7
varsol NS free product
1,1 dichloroethene X 4700
di-n-butylphthalate X 3.1
1,1,1 trichloroethane X 100,000
X: Not listed in 15A NCAC 2B .0200 or EPA REG IV
NS: Listed but no standard given
Soe ?eavice + `Self Povpor Suq eS1 Semi - n1p1�1`�'1.
•G o Yv\ Pie � Y � �n 1 {M Q n � J�

�J rnvi v Incc[ure , .�
Nl0000531a 03-07-0Z
I7Vp QW = 4 mew 95 70 i nd bilea
rC4k
15,04c
P -1-o col
Ij,o a. ((owa .
Qom - f3f0 cls
= S U rrut, (2/OS/Y- .a 111 CO Yu. q tia--r 2)2-
Lvy1Zeme = c_4412 2 k _ /S 4 LL
1a
► - LQvo0A)A---_(Q_ft‘ A et,
n LA, 1 32.42 CIL_dt_ 11, 4 li) —
99�1� ��• = /4o7C.5
` � a ((s
= a_3762___Ls_A‹s, 77/I -o = 1-al3- ¢
Jef1IIiP
�)htia�_.
(9,0 < -(5
tte k P4 d si .eh r- a /l 14 e__ c orL en A 4
were. Cf l(c.-a(e1__011 ( CG.aylLkY
/ C8oO:BcD5'3
BoDi. — XY7 - 4 = 8.34=�2C-.52x 3 = 7 y. 8'

SOC PRIORITY PROJECT: Yes No !(
If Yes, SOC No.
cc: Permits and Engineering
Technical Support Branch
County Health Dept.
Central Files
WSRO
To: Permits and Engineering Unit
Water Quality Section
Attention: Greg Nizich
Date April 26, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County Surry
Permit No. NC0005312
PART I - GENERAL INFORMATION
1.
Facility and Address: Chatham Manufacturing, Inc.
304 East Main Street
Elkin, NC 28621
2. Date of Investigation: April 22, 1994
3. Report Prepared by: George Smith
4. Persons Contacted and Telephone Number: Mr. Rick Hiers
910-835-0244
5. Directions to Site: From W-S follow Hwy 67 (Reynolda Rd.)
West to Elkin. Go across the bridge and turn right on Hwy
268 (East). The access road to the WWTP is located
approx. 0.4 miles on the right side of Hwy 268.
6. Discharge Point(s), List for all discharge points:
Latitude: 36° 14' 40" Longitude: 80° 50' 23"
Attach a USGS map extract and indicate treatment
facility site and discharge point on map.
U.S.G.S. Quad No. C15NE U.S.G.S. Quad Name Elkin South

7. Site size and expansion area consistent with
application ?
X Yes No If No, explain:
8. Topography (relationship to flood plain included):
Plant and discharge are in the flood plain area. Heavy
rains and snowfalls have caused flooding at the lower
end of the facility. High waters have caused the water
to back-up the discharge pipe into the chlorine contact
basin.
9. Location of nearest dwelling:
There are several buildings within 1000 feet.
10. Receiving stream or affected surface waters:
Yadkin River
a. Classification: Class C
b. River Basin and Subbasin No.: Yadkin Pee Dee
03-07-02
c. Describe receiving stream features and pertinent
downstream uses:
Fishing, wildlife, recreation, and agriculture.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 4.0 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the
Waste Water Treatment facility? 4.0 MGD
c. Actual treatment capacity of the current facility
(current design capacity)? 4.0 MGD
d. Date(s) and construction activities allowed by
previous Authorizations to Construct issued in the
previous two years: N/A
e. Please provide a description of existing or
substantially constructed wastewater treatment
facilities: Manual bar screen, fine screens, pH
adjustment, 2.9 M gal. equalization basin, 2.1 M
gal. aeration basin, dual 0.377 M gal. clarifiers,
chlorine gas, and contact chamber, 0.086 M gal.
post chlorine aeration tank, 0.04356 M gal.
aerobic digester and drying beds.

f. Please provide a description of proposed
wastewater treatment facilities: This facility
will be implementing a ground water remediation
project, which will treat 0.005 - 0.025 MGD. In
some cases, where required, they will pretreat
using carbon adsorption or metals precipation. The
remediation waters will be discharged into the
Their own WWTP.
g. Possible toxic impacts to surface waters:
Currently they are able to meet Chronic toxicity
at 1.9% dilution. The addition of these
remediation waters with relation to passing
Chronic toxicity has not been demonstrated.
h. Pretreatment Program (POTWs only):
in development approved
should be required not needed X
2. Residuals handling and utilization/disposal
scheme: Used to cap off the county land -fill.
a. If residuals are being land applied, please
specify DEM permit no.
Residuals Contractor
Telephone No.
b. Residuals stabilization: PSRP X PFRP
Other
c. Landfill: Used as soil fertilizer at landfill.
d. Other disposal/utilization scheme (Specify): NONE
3. Treatment plant classification (attach completed rating
sheet): Class IV
NPDES Permit Staff Report
Version 10/92
Page 3

4.
SIC Code(s): 2221, 2262, 2269, 2282, 2297
Wastewater Code(s) of actual wastewater, not particular
facilities i.e.., non -contact cooling water discharge
from a metal plating company would be 14, not 56.
Primary 55 Secondary 09
Main Treatment Unit Code: 0 5 0 1
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grant Funds or are any public monies involved.
(municipals only)? NO
2. Special monitoring or limitations (including toxicity)
requests: NONE
3. Important SOC, JOC or Compliance Schedule dates: N/A
(Please indicate)
Submission of Plans and Specifications
Begin Construction
Complete Construction
Date
4. Alternative Analysis Evaluation: Has the facility
evaluated all of the non -discharge options available.
Please provide regional perspective for each option
evaluated.
Spray Irrigation: Not enough land in close proximity.
Connection to Regional Sewer System: The Elkin facility
is not a well suited for this project.
Subsurface: Not enough land.
Other disposal options: NONE
5. Other Special Items: NONE
NPDES Permit Staff Report
Version 10/92
Page 4

PART IV - EVALUATION AND RECOMMENDATIONS
We recommend this NPDES permit modification be approved pending
the following remarks:
1) The addition of the new aeration equipment must be
operational before the permit is approved.
2) The ground water remediation from each well must be
calibrated for flow rate in order to evaluate the total
contributary flow into the WWTP.
3) This facilities effluent discharge is colored. This office
recommends a color limit be developed for these types of
industries.
Signatui of
LWater Quality Regional Supervisor
report
4--27- ?4-
Date
Li,Zc-v/
preparer
NPDES Permit Staff Report
Version 10/92
Page 5

• 113
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RIDGE PARKWAY 16 MI.
Chatham Maniafacturing , = nC
NC0005312-001
RECEIVING STREAM: Yadkin River
Stream Classification: C
USGS Quad. No. : C-15NE
USGS Quad. Name: Elkin South
County: Surry
Ass
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faa
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