NC0074268_Wasteload Allocation_19881219

PERMIT NO.: NCO() A,2,,
FACILITY NAME-
NPDES WASTE LOAD ALLOCATION
,
GF9aN.kA
Facility Status: EXISTING
(circle one)
Permit Status: RENEWAL
(circle ons)
Malor Minor.
Pipe No:
MDDIFIC.A710N UNPERDE1111
Design Capacity (MGD):
Domestic (% of Flow):
Industrial
Comments:
:.0 T'v1
z°lD Czz tbt'Z')
(% of Flow):
c vsT t ` -t 4 ks [mac Arik�c:RI of
Lis U L-A nl i :S C I 1-,V1n\C 6x
RECEIVING STREAM:
Class•
Sub•Basin: G - _h7
Reference USGS Quad:
County- P. N
Regional Office:
(elrcls sae)
Requested B
Prepared By:
Reviewed By:
(please attach)
As Fa ("�e > Ra Wa Wi WS
Date: 1 i l 3/
Date:
/z/07
Date:
Modeler
Date Rec.
+r
/ /I cz/BS
i/gS9 11
Drainage Area (mi2) 7°• 9 Avg. Streamflow (cfs).
7Q10 (cfs) E Winter 7Q10 (cfs) 30Q2 (cfs) Z5
Toxicity Limits: IWC 6/ % (clrcls ons) Acute / Chronic)
Instream Monitoring:
6TZ
Parameters1)6 `/4-
Upstream
Location s'� �/° 8
/) �lS1ez¢z1 ) Sc. yw. S4Y
Downstream Location
Nw -
Effluent
Characteristics
Summer
Winter
BOD5 (mg/I)
13
/3'
NH3 N (mg/I)
,Z
/ 0
D.O. (mg/I)
6
(o
TSS (mg/1)
30
_70
F. Col. (/ 100m1)
/ 00 0
/ 0 0 0
pH' (SU)
6-9
C - 9
l A7144"-
/Q
` "'-
fld. Avrs.
v p' L
MA.�EF,�cc
Uc
5� MAX.
e.._ (veyV
7Y
MJ (f1)
12
ate,,, (0 c/k.
j
3.3
Cy.,,,,.A61VR)
a, 2-
Comments. "4.-
5
112-.441
l 62742

Request N.. :4959
4
Permit Number
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
SLtbbasi n
County
Regional Office
Requestor
Date of Request
Quad
Wastef Iow
5-Day BOD
Ammonia Nitrogen
Dissolved 'Oxygen
1 S
Fecal Col i form
pH
Total phosphorus
Tot.re chlorine
Chromium
: NC0074268
: CROWDERS CREEK WWTP - CITY OF
42% DOMESTIC ; 58°, INf'U`T iR t,I..
PROPOSED (d'ein
S� (a�-'t-jf1wA{
CROWDERS CREEK
: 0
: 030837
GASTON
MR0
FOSTER Summer,
. 1 1/4/ 88 Winter
G 14NW 30Q2
WASTELOAD ALLOCATION APPROVAL FORM
IISTRECEV4
ptG 6 1'366
?EROS ENGINP1NG
Drainage Ane,i (.:q mi )
Average Flow (cfs.)
7Q10 (cfs)
7Q10 (cfs)
(cfs)
• RECOMMENDED EFFLUENT LIMITS
(mgci):
(mg/1):
(mg/1) :
(mg/1):
(mg/1):
(#/100m1):
(SU):
(mg/1)
(ug/l):
( r.lg/1) :
SUMMER
6.0
13
2
6
30
1000
6-9
2
19
WINTER
6.0
13
10
6
30
1000
6--9
2
D L Y M A X
32.7
p� J
74 err ,f,
MONITORING
/0.4
82
6.
16
23
Cadmium (ug/1 )
Lead (u9/1 )
Nickel (ug; 1 )
C•_ ti ug/ 1 )
.
PESp �P' �r
Let
Y Day o b
o lg.88
Gp
IJp•tream (Y/N): Y Location: SR1 I08
Downstream (Y/N): Y Location: 1) @ 5R2424 2) to 50 HEW 564
DLY MAX
3.3
38
82
8.2
OMMENTS
RCCOi'•7MEND EFFLUENT MONITORING FOR SELEN1TUMi, OIL & +3REA.3E, COPPER, SILVER, AND
ZINC. RECOMMEND INSTREAM MONITORING FOR TEMPERATURE, DO, Fr:CAL COLIFORM, CON--
DUCT1VIT-Y, 6C'D5, AND NH3-N. MONITORING SHOULD BE 3/WEEK DURING THE SUMMER
PERIOD (APR--OCT) AND MONTHLY DURING THE WINTER PERIOD (NOV-MAR).
**TOXICITY LIMIT': ATTACHED**
**PLEASE NOTE_ ATTAOIED MEMO**
* *LIMIT° DEVELOPED FORM QUAL E MOD':L RUN s8Y SOUTH OAROI..INA' S DEP"I . ':)F HEALTH
AND ENVIRONMENTAL CONTROL.t ,
_ _ _ .. _ _ _ ._ _...._ . _ _ ... _ _ _ - - __ ...- .. Zo1 _.Fac.l ,� ivw�o 1� . esa j41:;( cr at ....._
Recommended by
Reviewed by:
Tech. Support Supervisor
Regional Supervisor
7412Y (/Zr° / z/f fi
Da _ (01$
Date 22/ 4-Y
Per'mi I::s & Engineering I Date
; ; g r i"' 03 1989
RETURN TO TECHNICAL 6ER'V.,.� ES Y JAN ,

FacilityName C d i s �� LL (', , f 6 �,,,,
��+ Permit # NL 6o792CAY 7
CHRONIC TOXICITY TESTING REQUIREMENT (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 *February I987) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 61 % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform guarter(v monitoring using this procedure to establish
compliance with the permit condition. The first test will be performed after thirty days from
issuance of this permit during the months of �-u✓� Sep ` be . Effluent
sampling for this testing shall be performed at the N ES 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: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
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 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 a failure of permit condition.
7Q10 6, ° cfs
Permited Flow 6. o MGD Recommended by:
IWC% o
Basin & Sub -basin &re' 37
Receiving Stream (✓41,,,ds,,x C✓-
County Cobirrvi
**Chronic Toxicity (Ceriodaphnia) P/F at (( %, t!') TV r1'_ See Pan 3 , Condition H .
Se j ��.

r
DIVISION OF ENVIRONMENTAL MANAGEMENT
July 29, 1988
MEMORANDUM
TO: Allen Wahab
THROUGH: Steve Tedder a c
Trevor Clements
FROM: Jackie Nowellji,1
SUBJECT: Proposed City of Gastonia-Crowders Creek WWTP's
Discharge Point at Highway 321
NPDES No. NC0074268, Gaston County
Per the request of Mr. Dan Blaisdell of your office, the Technical
Support Unit has completed a preliminary stream impact analysis for the
Crowders Creek facility. The focus of this review was to access the
impact of the relocation of the discharge point to Highway 321, approxi-
mately 1.4 miles upstream of the original discharge site on the NC -SC
state line.
The results of our review indicated that the effluent limits for the
oxygen -consuming parameters would remain the same. They are as follows:
BOD5 (mg/1)
NH3-N (mg/1)
N113-N (mg/1)
DO (mg/1)
TSS (mg/1)
Fecal (Mt/100
13
2 (summer)
10 (winter)
6
30
ml) 1000
It should be noted that the recommended limit for total phosphorus of
2 mg/1 was requested by the South Carolina Department of Health and Envi-
ronmental Control (SCHDEC) as an effort to control eutrophication and
potential nuisance conditions at the mouth of Crowders Creek. The t tal
residual chlorine limits of 19 ug/1 (monthly average) an 37 ug/ (daily
maximum) stay the same in order to meet the SC regulation requires
dischargers not to cause a mixed instream residual chlorine concentration
greater than 11.0 ug/i.
The relocation of the Crowders Creek facility to the Highway 321 site
will result in changes to recommended metals limits. Based on a lower
7Q10 flow of 6.0 cfs at Hwy 321, as opposed to 6.7 cfs at the state line,
the allowable concentrations in the wasteflow were recalculated using mass
balance equations. The limits would change as follows:

•
Chromium (ug/1) 74
Cadmium (ug/1) 3.3
Lead (ug/l) 38
Nickel (ug/1) 82.3
Cyanide (ug/1) 8.2
Also, the lower 7Q10 flow will change the instream waste concentration
to 61%, and this change will be reflected in the chronic toxicity testing
requirement.
These results are preliminary and should not be considered as a final
wasteload allocation. If the City of Gastonia requires a final wasteload
allocation, it will be developed after an official NPDES permit application
for the Highway 321 site has been submitted along with the required applica-
tion fee.
Should you have questions or comments regarding this matter, please
feel free to give me a call at [phone], ext. 512.
cc: Rex Gleason
Central Files

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