HomeMy WebLinkAboutNC0020559_CORRESPONDENCE_19890610WDES DOCVWEMT SCANNIM& COVER SNSET
NPDES Permit:
NC0020559
Henderson WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
June 10, 1989
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Thies clocumex t to pX-iixted omx rexxme paper - igmox-e aky
corxteiat oa the renew -Se Bide
36 0 6
G " /'r j
State of Noah Czrolitia rr��
Department of Natural ReSOLu-ces and COi1 MUnity Development
DWISion of
512 North Salisbury • RPIJIlh, !NOT-th Carolina 27611
lames G. Nlarcin, Governor R. I aul V ilnl"
Williann W, Cobe}, jn, Secretary June 10, 1959 Rirccror
.
i,r. , ohn T. Harlar, Chief
Facilities Perfet'mance Branch
Water Management Division
U.S. Environmental: Protection Agency
Region IV
343 CQtil:tland St.
Atlanta, Ga. 30365
Subject: City of Mar. i.on-Corpen:i.nQ Ct:eek %%'ViTP
N'PUES Permit No. NC0031879, 1.1cDowell County
City of Rickory-Nllol-Lheast W'fP
PPDL.S Permit No. NC0020401, Catawba County
y CSlJiI of i3eL1C}er:Soil -Nli t:
NPDES l.'urnrit: No. NG00205�9, r ,Ace County
Lear. Mc. 1Aacla17:
I tarn wr:i brag in response to the letters received from EPA regarcli.ng your
corTcerrl over: possi_b.le ammonia Loxici,ty and subsequent NH3-N limits for the
subject; facilities. As you ,:ri.e aware, and as was indicated in a recent Lei: -
tea: from Trevor. Clements to Sali; Turner (copy attached), North Carolina
requires whole -effluent toxicity testing for all. major: NPDLS facilities as
well as all other. NPDES discharges of cninp.l.ex wastewater.. F?ach of the three
_Caci:l.i.tir-:s .ill clues Lion is i:cquired Co perform eHl.uont moni.Lor:ing .for ho'.:h
whole -effluent toxicity and aimnoni.a. As such, I believe the, current subject
draft: permits contain adequate provisions .fo: mainLaini.ng t:he waLer quality
sLandarris within the receiving water:s.
The Division of kaivironmciical Managemr:nc lDi:;i) cur.rcnl:.ly has a suffi-
cie,,iL dat�ibase on th(:se threc dischar.f;es Lo indicate i:hat ammonia toxicity
d0zS not Dose; r.i (_hreat: t:o t-Iic r:oC_civin� war_( rs. E:%.i:lllent: anunoni.a ccJncerll:r.r�-
t. :1115 �111d whole ef.f.l.uCilL t(J::1C-ii_`✓ t:ti� t'. !-'.S:.lii:ti �'1?"W `�lllilillar:"L'!,(_'(l 111 Ti li)h-ls :. F
r_
_�. 1;e.soecl:lVe. J 1�. }Jf:l(_1. Cill)SLI'latrVn O% eaf:il T.a::7.i.]t_V fO.l-.Lows:
1"ne C:.f:y oC Mrar:ioil C:or:l)cni.r!�, Creel. WW'.f.i' has been in compliance with
the.i , whole-c� H_Juen t toxicity a.i;n i.t_ for Lhe CS;ast year_ In add:i.t_ i orl , t1le i r:
N H3-N concenLt:ations have averaged .1.e5s I:'nail l mg�.i. and we would 110L expect
MI. irlst_ream proi)lem.
i' I lioix 2657, R;tlei�l�, ,Au, -di C_:rr;Ai;a 27G11;r;.N'7 'Icicplionc 919-733-7015
An Equal OPPOMIrlily Altirmativc Action Employer
- The City oi- llickor:y-Northeast= 1dk'TP di.scbarges into Lake Hickory (one
of. the Catawba CliAin Lakcs). The effluent .i..imits were haseci on minimum
instantaneous release from Lhe Lake Hhodhiss Dam upstream and are conserva-
t:Eve since they do not take into account the actual volume of water and dis-
i�ers ion thVst occur:s Within the lake. We do not:. expect, the facility to
impose an ammonia LoxiciLy Lhr.eat Lo Lake Hickory. Also, the City has baen
.in compliance with their Loxi.city limit for the past year.
- The `Town of llenderson has exhibited a toxicity problem and is cur-
i-cernt:ly under a .Judicial Order by Consent to address the situation. The Town
cannoC accept-_ additional complex waste under condi.t:i.ons of the Oi:dor. Their
effluent ammonia nitrogen concentrations consistently average less Lhan 1
and have noL been considered the cause of the problem.
Tile D:i.visi.orr s aware of the potential problems that can be caused in
receiving streams by aijimon.i.a toxicity. The. development of a NH3-N t:oxicit:y
wasteload allocation procedure is on our program agenda for this yea1:.
1f you have an_,! additional questions o-rr comments on this matter, please
contact Trevor Clements or myself at (919) 7.33-7015.
Sincerely,
Steve �d . 'f cider. , Chi cE
At Lachltients
cc: 'l'r.evor Cl.umeni_s
Dennis Ranrsey
Ken Eagleson
Arthur Mouberry
Vorr.est Westall_
Rex Gleason
Bill, Kreutzberger
Central. f':Lles
WLA 1.ile
Table I. Comparison of Eff:l"ent hmonia Nitrogen Concentrations (mg/1)
for Marion, Henderson, and Hickory
Marion
Henderson
Hickory
Summer Average
0.12
5.05
1.04
linimum
0.1
0.30
0.07
Maximum
4.58
15.00
5.74
`Hinter Average
0.70
13.00
005
Minimum
A .10
1.60
0.07
Maximum
8.80
23.00
9 .10
Table 2. Whole -Effluent Toxicity Testing Information and Results
Facility:
Required By:
Acute/Chronic:
Target/Limit:
Frequency:
IWC:
Begin Date:
Tox Test Date:
7/87
8/87
9/87
10/87
11/87
12/87
1/88
2/88
3/88
4/88
5/88
6/88
7/88
8/88
9/88
10/88
11/88
12/88
1/89
2/89
3/89
Marion
Admin. Letter
Chronic
Target
Quarterly P/F
74%
November 1988
Henderson
Admin. Letter
Ku Qs
Target:
Monthly
97%
January 1988
Hickory -NE
NPDES Permit
Chronic
Limit
Quarterly P/F
11%
July 1987
-
-
NR
-
-
PASS
-
-
FAIL
-
28.3
-
-
71.0
FAIL
ry
1.9
NR
FAIL
98.5
-
NR
79.0
PASS
PASS
92.0
-
PASS
92.0
PASS
79.4
PASS
PASS
97 . 7 .
-
PASS
20.0
PASS
-
83.7
-
-
94.2
-
PASS
15.0
PASS
-
NOTE
-