NC0025445_INSTREAM ASSESSMENT_19850404

NPDES DOCYNENT SCANNING COVER SHEET
NPDES Permit:
NC0025445
Randleman WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Report
Speculative Limits
Instream Assessment (67b)
f
Environmental Assessment (EA)
Permit
History
Document Date:
Aril 4, 1985
This document is printed oa reuse paper - ignore any
content on the reverse side

DIVISION OF ENVIRONMENTAL MANAGEMENT
April 4, 1985
M E M O R A N D U M
TO: Carry Coble
FROM: Randy Dodd P-Cb
THROUGH: Meg Kerr M
Steve Tedder
SUBJECT: Instream Assessment for SOC
City of Randleman
An assessment has been completed to determine the impact of the
addition of 81,000 gpd of wastewater to the Randleman treatment plant.
This flow is comprised of the 8,000 gpd currently being requested and
the 73,000 gpd previously requested by the City. Randleman discharges
to the Deep River downstream of the discharges from Jamestown and High
Point and upstream of the discharge from Asheboro. There are also
several smaller dischargers in the reach of the river of interest.
Previous modeling analyses and effluent and instream monitoring
have indicated that the Deep River is being impacted by these point
source dischargers with respect to instream dissolved oxygen and toxics
concentrations. No additional impact on the instream D.O. level was
previously predicted for the discharge of 63,000 gpd under the SOC.
A "Level C" modeling analysis has been performed to predict the
impact of the additional 81,000 gpd on the Deep River. The analysis
indicates that the instream oxygen level will drop to 3.69 mg/l just
below Polecat Creek, assuming 7Q10 conditions, a wasteflow of 1 mgd,
and BODult = 84 mg/l. The BOD ult was determined in view of the SOC
limit for BOD5 (70 mg/1) and assuming CBOD = BOD5 and NBOD = 4.57 x
NH3 = 14 mg/l. The wasteflow was chosen based on the daily average
flow of .93 mgd, and information indicating that the daily average was
underestimated . It is not known how much the daily average was under-
estimated; therefore, this assumption may or may not reflect average
conditions.

Larry Coble
April 4, 1985
- page two -
The sag below Polecat Creek should be below 5 mg/l for 0.15 miles.
After the Worthville discharge, an additional 1.4 mile reach is predicted
to have instream D.O. levels below 5 mg/l, with a sag of 4.42 mg/l.
Below the Asheboro discharge, an additional 1.2 mile reach is predicted
to be below the 5 mg/1 standard, with a sag of 4.62 mg/l.
Because effluent data indicate that Randleman is capable of meeting
an SOC limit of BOD5 = 55 mg/l, the model was also run assuming BOD ult =
69 mg/l. With this input, the D.O. minimum below Polecat Creek was pre-
dicted to be 4.36 mg/l, with 0.07 miles having D.O. levels less than 5
mg/l. The D.O. would not drop below 5 mg/l between Worthville and
Asheboro, and would drop to 4.82 mg/l below Asheboro, with 0.78 miles
having levels below 5 mg/l.
In order to assess the impact of the additional waste, the model
was run with a wasteflow of 1.081 mgd, and for BOD5 values of 55 mg/l
and 70 mg/l. With BOD5 = 55 mg/l, the predicted D.O. minimum is 4.15
mg/l below Polecat Creek, or 0.21 mg/l lower than predicted at 1 mgd.
Similarly, the additional predicted sag is 0.20 mg/l below Worthville,
and 0.07 mg/l below Asheboro. The additional flow would result in a
total of 0.9 miles of degraded stream in addition to the degraded stream
miles at 1 mgd.
With BOD5 = 70 mg/l, the additional sag is predicted to be 0.25 mg/1
below Polecat Creek, 0.26 mg/l below Worthville, and 0.10 mg/l below
Asheboro. The additional total numbers of stream miles below 5 mg/l is
0.6 miles. The reason that the total number of additional degraded
stream miles is less when BOD5 = 70 is input into the model is because
the D.O. is predicted to drop below 5.0 mg/l between Worthville and
Asheboro when the additional wasteflow is not considered (1 mgd). However,
assuming effluent BOD5 = 55 mg/l, the model predicts that D.O. will not
drop below 5 mg/1 in this river reach at 1 mgd. The additional wasteflow
provides enough BOD to result in a 0.7 mile stream reach with predicted
D.O. levels between 4.8 and 5.0 mg/l. The results of the modeling runs
are presented in Table 1.

Larry Coble
April 4, 1985
- page three -
Based on this analysis, it appears that the total additional SOC
waste will not result in "significant degradation", according to the
EMC criteria of additional D.O. depletion of 0.5 mg/l. However, the
additional length of stream degradation exceeds the criteria of 0.5
miles.
If the SOC is approved, it is recommended that a SOC limit of
B0D5 = 55 mg/l be included. Monitoring data indicate that the plant
can meet this limit. The limit also provides for water quality pro-
tection.
An effluent toxicity screen in July, 1983 indicated that the
discharge is toxic (LC50 = 47).
Please advise if questions.
RCD:mlt
Attachment
cc: L.P. Benton, Jr.
Doug Finan

Table 1
Additional D.O. Additional #
sag due to SOC of stream miles
flow (mg/1) with D.O. < 5 mg/l
Assuming
BOD5 = 55 mg/l 0.21 0.9
Assuming
BOD5 = 70 mg/l 0.25 0.6

67(b) INSTREAM ASSESSMENT CHECKLIST
YES NO
Dissolved Oxygen:
— Is D.O. decreased less than 0.5 mg/l? -
- is the affected stream segment less than 0.5 miles?.
Comments sas.- W-LA-�-o _
2. Fecal Coliform:
— Is the fecal coliform below the Ovate
Comments 0., ,.Aa. _L',- l ; �� .�f �1 t
3. Toxics:
ity standard? X
— Were toxics included in the additional flow?
_ Did these cause a predicted increase in the concentration
of toxics in the receiving stream? —
— Are stream standards v'ola ons predicted at low flow?
Comments N,� ., ..' �;
4. Other Parameters:
— Were any other parameters predicted to significantly
impact water use?
Comments
21

I,
70
It

NORTH CAROLINA DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT
DIVISION OF ENVIRONMENTAL MANAGEMENT
Winston-Salem Regional Office
March 5, 1985
M E M O R A N D U M
TO: Meg Kerr
Technical Services
FROM: David Russell
Chemical Analyst II, WSRO
SUBJECT: City of Randleman request for additional wastewater flow -
Randolph County
In accordance with the attached correspondence the Winston-Salem Regional
Office requests an instream assessment for a SOC 67(b) request for the Randleman
Wastewater Treatment Plant. The City requests approval of an additional
8,000 gallons per day of domestic wastewater flow. Six thousand (6,000)
gallons per day would come from the Rama Woods apartment complex and 2,000
gallons per day would be generated by anticipated single family residential
construction.
The existing wastewater treatment plant is a 0.5 mgd contact stabili-
zation unit. The plant is currently being upgraded to a 1.0 mgd plant.
The time schedule in the existing SOC requires the achievement of final
effluent limits on or before September 1, 1985.
Based on self -monitoring data during 1984 this 0.5 mgd plant received
an average daily flow of .930 mgd. On 129 days of 1984 the flow meter was
pegged at the maximum flow that could be recorded. Quite possibly, the
actual flow could be higher than the reported flow. The SOC establishes
interim effluent monthly average limits for BOD and TSS of 70 mg/l and
80 mg/l, respectively. Self -monitoring data for 1984 indicates these interim
limits were met. Final effluent monthly average limits for BOD and TSS are
established at 30 mg/l each.
I have attached a copy of the treatment plant's past performance data,
as well as, the SOC and permit's final effluent limitations.
DR/cm
cc: L. P. Benton, Jr.
WSRO
Central Files
RECEIVED
MAR g 1985
TECHNICAL SERVICES UNIT

RANDLEMAN WWTP 1984 SELF -MONITORING DATA
EFFLUENT
INFLUENT
DATE
BOD
(mg/1)
TSS
(mg/1)
OIL &
GREASE
m l)
FECAL
COLIFORM
10
DAILY AV.(PEAK
FLOW
DAY
(mgd)
PEAK *
RATE
BOD
(mg/1)
TSS
(mg/1)
Jan. 1981
42.2
20
'90.2
110
.820
1.43
2000+
287
110
Feb.
54.5
40
�
I55.5
� J
f :0.2
.936
1.48
2000+
221
( 54
-March
39
41
49.5
18
1.020
1.67
2000+
213
65
April
33
18
60.5
0
1.930
1.45
2000+
221
114
May
45
20
70.8
1.6
973
1.33
2000+
224
80
June
50
39
94.8
0
.958
1.22
2000+
210
80
July
42
25
68.7
0
.837
1.22
2000+
228
79
August
52
54
124.2
0
.889
1.13
2000+
285
86
Septembe
48
88
73.1
0
.921
1.18
2000+
291
82
October
51
I
62 i114.2
1
1.048
1.48
2000+
291
85
November
55
40
85.6
6.9
�.007
1.40
2000+
281
62
Dec. 1981
48
i 26
51.1
0
822
1.68
2000+
248
62
Average
47
39
78.2
10,
930
1.40
2000+
250
80
* The lant's flow meter can record a maximum flow rate of 2000 p gpm (2.88 mgd).
On 35% (129,.days) of the days in 1984 the flow meter was pegged at the maximum l/
rate. During the period October through December 1984 the meter was pegged
at 2000 gpm on 59 days (64% of the days during the period). Based on.this data,
the reported daily flow totals are below the actual flow through the plant.

r_ S o .
(IO
ALDERMAN
1 C- L EONARD. Mayor Dro-;emoo:e
KATHY COOPER
C. WORTH HiNSHA''A'
JOE P. PARRISH
BILL BOBBINS
(, Elt1 of an'IML 1 alt
RANDLEMAN. NORTH CAROLINA 27357
Eiizabe..'. Swaim. Mayor
i,,_=h 30, 1984
Mo. Robet F. n21'as, D.i,te.C:Gt
Division o6 :�ii'/:iraa n1e11T.:it ':aa'4�0mBF.%
P. U. Box 2760
Rateigh, .NC 2767-7637
Dean AN. Helms :
RM
L Cis Cork
APR
Ire? w re 13, ,
c 16W
RE: City w5 Randleman
Speciat C tdet by Conse% t
I an `.ty that I didn't get to see you. when I was in your ob5iee
on Match 28, 7934, howevea; the meeting we had tit{: Mn. 'Witin6 was ve y
he.P 10. Yn. Uitns (,)as ve-ty co,t00 and explained the Special Under by
Coli..1' elat- ptog%am in depth which Wightened me on se0stle, aa,eas that
was ur..awate ol.
!n accondance with At. Wilms advice we ate requesting an amendment
V out Special Under by Consent. The n_equas red .amendment wou.Zd Wow us
.to accept 6,000 g^Oilona pet day :Cram the p,,opost;d Rama woods apaa,tment
complex and 2,000 gallons pen dam jon a tici-pated e.i.rg.Ce family ide t:Za2
coits ttuction.
(tie cou%d iust. ^',,iA ,if,is ne0u.eb% by otijvUng tho Softaoing ,Lnbormation:
1. in `lovembez, 1983, ). Stevens ✓la. Plant was ctoeed. They
waxe d1schagOg appaox{matety, 13,000 qG_ on5 pelt day.
2. P,a.es-t.Cu".e taVicatons closed then oper.att In in Uctobet, i9853 and
they were d.ischataina appaox mately 1,000 gaf,tons pea day.
3. These .two closings iepaesents 14,000 ga tonz pay day.tess being
di schataed into out wan iewaiet twatmen;t. plant.
4. Ifl the Special Undel,_ by Consent amen4pni is -approved as-reques:Led
it would add back into the system 0000 gallons pelt. day. '
The necucs.ted amendment is ve`y m.pontar..t .to out community as avaltable
housing is p'u;ctieafty naneviat:ent in Randleman at ,'he .piczert time.
I6 you have any que,6ti-on6 conce'ua.ing..thu6 Aeeuest, .please beet 5nee.
,to contact me.
_Cinc eQy,—
1 hi labetih Sw0jr:.'.

NORTH CAROLINA '
-_-1-1 RONMENTAL MANAGEMENT COW-IISSION
COLMTY OF R NDOLP_-i
IN THE MATTER OF )
NORTH CA?:OLINA
AV; ,
NO. NC0025445, 1
HELD 3Y THE CITY" OF )
PANDLEN_Ai3 )
SPECIAL ORDER BY CONSENT
EMC WQ NO. 23-21
v
0
i& EE
CAP
=
c
a
Pursuant '--c _arovisions of North Carolina General Statute 143-215.2 and 143-
215.67, this Special Order -by Consent is made and entered into by the City
of Randleman, hereafter referred to as the City, and the North Carolina
Environmental Management - Commission, an agencv of the State of North Carolina
created by NCGS 143B-282, and 'hereafter referred to as the Commission:
1. The
City and the Commission hereby stipulate the following:
(a)
That the City holds North Carolina NPDES Permit No. NC0025445
for operation of an existing wastewater treatment works and making
an outlet therefrom for treated wastewater.to Deep River, Class
"C" waters of this State, in the .Cape Fear River Basin, but,is.'
_.
unable -to comply with -the final effluent -limitations -for Flow; .TSS- - -
- - - - -
.and BODS according to sampling by Division of.Environmental
Management as set. -forth in the permit" Compliance will. require
preparation of plans and specifications for and construction and
operation of.additional'treatment works;
(b)
That non -compliance -with -final effluent limitations constitutes
--
causing and contributing to -pollution of the waters of this State
named above,.and the.Cityis within the jurisdiction of the Com-
missionas set forth inNCGS Chapter.143, Article.21;
(c)
That recent operation and maintenance of the City's wastewater
treatment Dlant has notbeen:adequate" Current industrial con-
tributors and water treatment plant loadings have had a significant
adverse impact on -the wastewater treatment plant. And, these and
other current- operational problems must be addressed whether or
not additional -wastewater :is;approved-herein;
(d)
That the.City'desires to cause or`allow the:discharge.of 73,000 gpd
of additional-wastewater-to-the..treatment works, '.and that -the _dis-
charge of such additional.:wastewater from,the'treatment works to the
waters.of,this State wAl not result.inrany significant -.degradation
in their quality or -in 'the .-quality of any :water ultimately receiving
such discharge;
__ _
... ... .. . -. et ..
`'.
1 ; } _ i S. t ei.�!, .. � it �
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> "`'} r "f �.
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+'. "'-"5 - ..".—[ .c �. �n-•�"c�,�c""bT .s� rn,�.._ +
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,y.
.. h � F, f SA Av�� bd'•�,. 4�G+%
1'1.

.a ,: �t,• �..'.J$._, _,_s. '..Y'..:7«.. a ...._..:r _.. .,w..W .s;°k a. n. .. __ _wt.C.. I, i ,.�.. +2., ,. �.. ...
�v.� ,' ... tc '.'ig"f:�;�gyp� idt.�a"l x' ,�,+� �rl ��•ra ��'cp a.,.',y x t n�;-" e ;: z �' c ,., u r a .
lannra fdr H�
9 �'. (e)�, That the City.=,has secured financing' for planning and,�`for icons truct.ng'
~ treatment works whicn,.when;constructed and' "op erated ;_will be suf
ficient;to..adequately;aneatah_ewastewater.presently,�be_ing}discnarged.
and"'the ad3itional wastewater desired' to, 5e,discharged,,to:,the-extent
=- tnat the City wil.l.be able to comply with final permit.effluent,
limitations; and -
(f) That -the City hereby waives .its right to_a hearing on the terms of
this..Special..Order..by Consent-pursuant.to procedural. requirements
of. NCGS-143-215.4 and Commission.*rules in.15-NCAC 21., and also hereby
waives --its. right to appeal this Special Order. by Consent in
accordance with -NCGS-143-215.5., .
2. The City, desiring to comply with conditions. of the permit.identified in
_.---. --. paragraph-1(a)_.above, does I:ereby_ agree, to' do -and perform all of the
following:
(a) Meet and comply with all terms and:conditions of the permit except
those effluent limitations identified in paragraph l(a). above;
(b) upon execution of this Order, undertake the following activities in
accordance with the indicated time schedule: -
(1)- Final plans and.specifications submitted on or before
August 1, 1983-
.(2)__Begin construction on or,.before April.l, 1984.
(3) Submit progress report on or.before October 1, 1984.
(4) Complete.construction on or:.before_June 1, 1985.
(5) Achieve final.effluent limits on..or before Septe.mber.l,. 1985;
,c). Within 45 days of Environmental Management Commission-approval.of this
document provide a report on the.status of compliance by industrial
contributors with the sewer use ordinance limit of loo mg/l oil and
grease and other major provisions of the_adopted ordinance;
(d). Within 180 days insure compliance by industrial contributors with
the sewer use ordinance;
(e) Within 30 days .provide an operations guide for the holding basin at
the Randleman Water Filter Plant. This guide should explain the
procedure to be used to equalize the solids and hydraulic loading
to the municipal wastewater treatment plant;
(f) within 20 days provide calibrations of flow measurement device and
data to be used in converting previous flow data to corrected
readings;
(g) Within 45 days provide laboratory training -for the treatment plant
operator at a laboratory certified by the Division of Environmental
Management;

f^.ku'bij
C i i ; i+j'1�27J"a,`c°{�LJ''Y t 4 {. .t• SiA
` f .(hY. Within"'45` days"'submit"',for<approval'�'t0''the .Di vis �.on �of,S Env3 raiy
Management -a proposal, 3etailingr the, Citv's' approach :.toe removes IS t,,.�,,';. , �,,
pounds - of BODS-frcm''the wastewater treatment,plant''-,effluent: This { sr
proposal'and"the -15::mounds BODS removaltlshall.be inr',addition .tb.. - --`
remedial treatment steps' sited in ,paragraphss2.(c)(d)(e)(f) and'(g)-
above;
(i) Within220 days complete construction -on and have inoperation any., _
facilities specified as par-, of the City's approach to -remove '1-5 ,
additional pounds of BODE from' -the -wastewater treatment plant effluent;
(j) Identify any and all infiltration/inflow problems associated with
— --the-facility and establish _a_-program__tocorrect these problems;
(k) During the time in which
this Special Order
by Consent is
effective,
' -comply -with--the'-fol-lowing
interim effluent
limitations_:_.
Effluent
-
Monthly
Weekly
Characteristics'
Units
Average
Average
BODS
mg/1
70 mg/1
105 mg/1
TSS
mg/1�
60 mg/1
120 mg/l
Interim limits contained in this Special Order by Consent -:may be� --- - -- -
reduced or modified to more accurately reflect efficiency of the City
wastewater treatment plant after the above stated pretreatment, operation
and maintenance improvements are made.
(1) No later than 14.calendar days after any date or time identified for -
accomplishment of any activity listed in 2(b) above, submit to the
Division Director written notice of compliance or non-compliance
therewith. In the case of non-compliance, the notice shall include a
statement of the reason(s) for non-compliance, remedial action(s)
_taken, and a statement identifying the extent to whichsubsequent
dates or times for accomplishment of listed activities may be affected;
and
(m) Enforce the water conservation Drovisions of the State.Building Code -
as it applies to new residential construction (Volume_11, Chapter'IV
401.2, 401.3).
3. In accordance with the provisions of NCGS 143-215.67(b) the Commission
allows the City to accept the additional waste specified below to its
waste -disposal system:
(.a) Nantucket Hosiery Mills Corp. - 63,000 GPD
(b) Worthville Community - 10,000 GPD
(.c). Total Flow - 73,OOO.GPD

Owx -'7:
1#1
,effluenf l:j'jn3'.tat'io-'ns'"'c�o�ntained�h6reiri; herebysupersede,�
i6cAdlwoide'is,,,�a r�:pAentLLC?�ance- jomp Sched4ul�e�4j,�ettermay[ WR'
ed�, in
l,�issu
and IcVn ltmoonsFZ ii niationsY -contaiH6dZth'­
erexn
connection with- NPDES,-P,er itzN6,.-,',,,NCO025445--
5.. Any violation of. terms-tof '.this-Sliecibl Oider.,b Consent, -in&ludinqf failure
to achieve!- interim effluent0 t- pi�raqraph-.2.(k),
dimitations-se -forth -at: a86ve
,aubject's­the -.City,to'the enforcement-,Authoiity'of -,the' Comm'
ission.and o
-, 2 the ,�Dir,ecfor_,purs,iiant_ to= NCGS- 143-" 1,5 6 :and Cbmaiisslontruie`s,ih7
nt-�sl�allcexpire on September 1; 1985.- .6. .,Thi!�:Special Order by consent
En.tered,into this the f1th day of August 7." h 1984
- - - - - - - - - - - - - -
City. . of
�B - - - - - - - N- --C- _ENV ONMENTAL.'MAN
AGEMENT
boNmissioN
Chairman of_ he Commission
g,