NC0079057_WASTELOAD ALLOCATION_19920925

NPDES DOCUWENT rCANNINC COVER :MEET
NPDES Permit:
NC0079057
Manteo WWTP
Document Type:
Permit Issuance
Wasteload Allocation4
�w.i.µ�.•t'T..e�,v�mA+4b7nx.�iKs9.sW'Q'T^^""'
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Plan of Action
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date:
September 25, 1992
I
This document is printed on reuse paper - ignore a.ny
content on the reverse side '

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO079057
PERMr= NAME:
FACILITY NAME:
Town of Manteo
Town of Manteo WWTP
Facility Status: Proposed
Permit Status: Renewal
Major -4 Minor
Pipe No.: 001
Design Capacity: 1.0 MGD
Domestic (% of Flow): ** 99.95 %
Industrial (% of Flow): ** 0.05 %
Modeler
Date Rec.
#
DrainageAvg.(mi`) Avg. Streamflow (cfs):
7Q10 (cfs) �� Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC �� % Acu Chronic
INSTREAM MONITORING REQUIREMENTS
Upstream Locations: (1) mouth of Doughs Ck (2) near mouth of Scarboro Ck
Downstream Locations: (1) Shallowbag Bay app. 800 ft NE of Sandy Point, (2) Shallowbag Bay apprax_
mile SW of Ballast Pt, (3) Roanoke Sound app 200 ft outside Shallowbag Bay
(See Map for locations)
Parameters: DO, temp, pH, salinity, fecal coliform
Special instream monitoring locations or monitoring frequencies:
Comments:
**From old staff report. PIRF has been requested,
PLGr
r
f
RECEIVING STREAM: Shallowbag Bay��
Class: S C
Sub -Basin: 03-01-51
Reference USGS Quad: D 36 NW (please attach)
County: Dare
Regional Office: Washington Regional Office
Previous Exp, Date: 2/28/93 Treatment Plant Class: n/a
Classification changes within three miles:
SC -HOW.
Requested by: Charles Lowe Date: 6/29/92
Prepared by: Date:
Reviewed by: ^^^ Date: z-
Effluent
Characteristics
Summer
Winter
BODS (mg/1)
% o
NH3-N (mg/1)
4
D.O. (mg/1)
TSS (mg/1)
ISO
'30
F. Col. V100 ml)
/ 4f
%
14
pH (SU)
A-0 V X
mv �+b V
V-
i'
-fo V
P116 (tic", V
0A16
4A4t
atc,-
ts [ntI'=4 �o r
r
ut``1t�2 (c E(�r�+oE' P'
a v►o� - Sae
Comments:
'orit'r, eqJ zl
I
tHL.P
e4) -
/q (0,3
_F6L4

n
GIGNAL AI PGRC Y
v
�II
b j0 // ,� '• 4 11
/
z �.� ♦ 1
Ifave
H eadauarters
rical Site) _ uji —
0
Man 1 Well.Fie
Site,
Bast /
s c Llehtd lY 1p
a ! c Pao
O b
Sandy PolntY �Q{o� 78 i
•� � �2 Lat 335'5424'' 1
6¢
/
{` L""Ong 75'39 28' _
6 '6
_
6
l e •
e —
e a
WW''P
SITE
-_
z'b\.K E
A-_N_
00
O0
O
Q�
©©� Q t. Influent Pump Station
® 2. Aeration Basin
© 0 3. Secondary Clarifier
'i4. Tertiary Filters
® 5. Post Aeration
a 6. Digester
7, Aerated Sludge Holding
6, Maintenance Building
9. Operations Building
SCALE 1' -100,
F. T. GREEN AND ASSOCIATES
CONSULTING ENGINEERS
WILSON, NORTH CAROLINA TOWN OF MANTEO WWTP
DATE JUNE, M2 DARE COUNTY NORTH CAROLINA
SCALE AS SHOWN

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31) Permit No. NCO079057
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 200C*•
Total Suspended Residue—
NH3 as N
Dissolved Oxygen —
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Phosphorus
Acute Toxicity****
Salinity
Discharge Limitations
�,•rr
HH M
5.0 mg/I
30.0 mg/l
2.0 mg/I
14.0 /100 ml
7.5 mg/1
45.0 mg/I
3.0 mg/I
28.0 /100 ml
Monitoring
Requirements
Measurement
Sample
'Sample
Daily Max Frequency
Type
Location
Continuous
Recording
I or E
Daily
Composite
E, I
Daily
Composite
E, I
Daily
Composite
E
Daily
Grab
E, U, D
Daily
Grab
E, U, D
17.0 ug/I Daily
Grab
E
Daily
Grab
E,U,D
Monthly
Composite
E
Quarterly
Composite
E
Grab
U, D
*Sample locations: E - Effluent; I - Influent; U = U 1 + U2; U 1 - Upstream at the mouth of Doughs Creek, U2 - Upstream near mouth of
Scarboro Creek; D = D1 + D2 + D3; D1 - Downstream Shallowbag Bay approximately 800 feet northeast of Sandy Point, D2 - Downstream
Shallowbag Bay approximately 0.4 mile southwest of Ballast Point, D3 - Downstream Roanoke Sound approximately 200 feet outside of
Shallowbag Bay (see map)
Upstream and downstream samples shall be grab samples. Stream samples shall be collected three times per week during June, July, August,
and September and once per week during the remaining months of the year.
**The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
A %) uzgyal.
} ? *** T "ily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
1 � �
**4* AApt4 Toxicity (Fathead Minnow 24 hr) No Significant Mortality at 90%; February, May, August and November; See Pan III, Conditior
" E� -
! rrn Part III, Condition G.
p Tilt p 11 not be less than 6.8 standard units nor greater than 8.5 standard units and shall be monitored daily at the effluent by grab sample.
The=Wll be no discharge of floating solids or visible foam in other than trace amounts.

A. ().EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 -October 31) Permit No. NCO079057
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. (Continued)
Effluent Characteristics
NO2+NO3
TKN
pH
Pollutant Analysis*****
Z
I �`
M
n
P.
r
N
0
o �✓J
Discharge Limitations Monitoring RegIrements
Units (specify) Measurement ;ample
Monthly Avg. Weekly Avg, Daily Max Frequency Tvoe
Monthly ;omposite
Monthly omposite
Grab
Annually
'Sample
Location
E
E
U,D
E

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NCO079057
During the period beginning
on the effective date of the permit and lasting until expiration,
the Permittee is authorized
to discharge from
outfall(s) serial number 001.
Such discharges shall be limited and monitored by the permittee
as specified below:
Effluent Characteristics
Discharge Limitations
Monitorina
Reaulrements
Measurement
Sa
'Samole
Monthly Ava. Weekly Ava. Dally Max
Freguency
Tyoe
Locatlon
Flow
1.0 MGM
Continuous
Recording
I or E
BOD, 5 day, 200C'*
10.0 mg/I 15.0 mg/I
Daily
Composite
E, I
Total Suspended Residue—
30.0 mg/I 45.0 mg/I
Daily
Composite
E, I
NH3 asN
4.0 mg/I 6.0 mg/I
Daily
Composite
E
Dissolved Oxygen***
Daily
Grab
E, U, D
Fecal Coliform (geometric mean)
14.0 /100 ml 28.0 /100 ml
Daily
Grab
E, U, D
Total Residual Chlorine
17.0 ug/I
Daily
Grab
E
Temperature
Daily
Grab
E,U,D
Total Phosphorus
Monthly
Composite
E
Acute Toxicity""
Quarterly
Composite
E
Salinity
Grab
U, D
*Sample locations: E - Effluent; I - Influent; U = U 1 + U2; U1 - Upstream at the mouth of Doughs Creek, U2 - Upstream near mouth of
Scarboro Creek; D = D1 + D2 + 133; D1 - Downstream Shallowbag Bay approximately 800 feet northeast of Sandy Point, D2 - Downstream
Shallowbag Bay approximately 0.4 mile southwest of Ballast Point, D3 - Downstream Roanoke Sound approximately 200 feet outside of
Shallowbag Bay (see map)
Upstream and downstream samples shall be grab samples. Stream samples shall be collected three times per week during June, July, August,
and September and once per week during the remaining months of the year.
f **The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
%) rl.
f n �
Z*** 8 average dissolved oxygen effluent concentration shall not be less than 6.0 mg/I.
� s
1 y***t<Ac oxicity (Fathead Minnow 24 hr) No Significant Mortality at 90%; February, May, August and November; See Part 111, Condition
{ TE. `-'
Z*** 4 S&Nrt III, Condition G.
r'The[ I snot be less than 6.8 standard units nor greater than 8.5 standard units and shall be monitored daily at the effluent by grab sample.
n '
vThershO
--.,,qe no discharge of floating solids or visible foam in other than trace amounts.

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NCO079057
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. (Continued)
Effluent Characteristics Dlschar_cle Llmltatlons
Monthly Ava. Weekly Ava.
NO2+NO3
TKN
pH
Pollutant Analysis""'
n^
m
Z
4
Y
rrn
a
r
Monitorina Reaulrements
measurement
Sample
Dally Max Freauency
Tvae
Monthly
Composite
Monthly
Composite
Grab
Annually
'Sample
Location
E
E
U,D
E

Part III
Permit No. NCO079057
E. ACUTE TOXICITY TESTING REQUIREMENT (QRTRLY)
Fathead Minnow 24 hr - No Significant Mortality
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the
ivonn i.aroiiva rrocedure Document entitled "Pass/Fail Methodology For Determining Acute
Toxicity In A Single Effluent Concentration". The monitoring shall be performed as a Fathead
Minnow (Pimephales promelas) 24 hour static test, using effluent collected as a 24 hour
composite. The effluent concentration at which there may be at no time significant acute mortality
in anv two consecutive toxicity tests is 90% (defined as treatment two in the North Carolina
procedure document). Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The first test will be performed after
thirty days from issuance of this permit during the months of February, May, August and
November.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Disrharge Mov.itoring.Form (MR-1) for the month in which it was performed, using the parameter
code TGE6C. Additionally, DEM Form AT-2 (original) is to be sent to the following address:
Attention:
Environmental Sciences 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 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 either these monitoring requirements or tests performed by the North
Carolina Division of Environmental Management indicate potential impacts to the receiving stream,
this permit may be reopened 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.
F. A diffuser is required for the outfall. The outfall shall be located as far from SA and HQW
waters as possible (approximately 1000 to 1500 feet into the channel, see map) and shall be
constructed in accordance with applicable rules and regulations.
G. The pemiittee shall conduct a test for pollutants annually at the effluent fr t��te(pIe[t'e� DIP
plant. The discharge shall be evaluated as follows: 1) A pollutant analysis of th Aue�tt r�iGSf tie'rcompleted annually using EPA approved methods for the following analytic• frloqq� (a
purgeables (i.e., volatile organic compounds); (b) acid extractables; (c) base/neutral extraciabld
(d) organochlorine pesticides and PCB's (e) herbicides; and (f) metals and other inorganics. The
Annual Pollutant Analysis Monitoring (APAM) Requirement ReportingCEF6fM[AF14jd00Py

accompanying memo, to be provided to all discharges affected by this monitoring requirement,
describes the sampling and analysis requirements and lists chemicals to be included in the
pollutant analysis. This monitoring requirement is to be referred to as the "Annual Pollutant
Analysis Monitoring Requirement" (APAM).
2) Other significant levels of synthetic organic chemicals must be identified and approximately
quantified. For the purpose of implementing this requirement, the largest 10 GUMS peaks in the
purgeable, base/neutral extractable, and acid extractable fractions (or fewer than 10, if less than 10
unidentified peaks occur) for chemicals other than those specified on the APA Requirement
Reporting Form A should be identified and approximately quantified as stated in the APAM
Reporting Form A instructions. This part (item 2) of the APAM requirement is to be referred to as
the 10 significant peaks rule".
11' " 5-
i
MAY 15 fS i

NOX21i CAROLIAA DEFT. OF AA'PU;2AL RESOURCES AND COMMUNITY DC WT jee—p
' ENVIRONMENTAL MANAGEMENT COMMISSION FOR AGENCY USE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR PERMIT TO DISCHARGE WASTEWATER
STANDARD FORM A — MUNICIPAL LA 07063
j
SECTION L APPLICANT AND FACILITY DESCRIPTION
Unlade otherwise specified on this loan all Items are to be completoo. It an Item Is not applicable Indicate -NA-' t ^
(�J
ADDITIONAL INSTRUCTIONS FOR SELECTED ITEMS APPEAR IN SEPARATE INSTRUCTION BOOKLET AS INDICATED. REFER TO t�
BOOKLET BEFORE FILLING OUT THESE ITEMS. 1.
Please Print or Type j
1. Legal Name of Applicant
101-
(tae Instructions)
s. Mailing Address of Applicant
(fee Instructions)
Number i Svelt
lose
City
lose
State
lose
ZIP Code
load
s. Applicant's Authorized Agent
(M! Instructions)
Nam! and Title
1038
Number 6 Street
lose
City
10se
State
10sd
Zip Code
lase
Telephone
loss
a. Previous Application
It a previous application for a par-
mit under the National Pollutant
Discharge Elimination System has
been made, give the date of
application.
104
Town of Manteo
P. 0. Box 246
Manteo
North Carolina
27954
Granitzki
P. 0. Box 246
Manteo
North Carolina'
27954
919 473-2133
Area Number
Code
87 09 01 (Date Issued #NC0025488)
YR MO DAY
I certify that I am familiar with the Information contained in this application and that to the best of my knowledge and belief such Information
If true, complete, and accurate.
Gus Granitz_ki _I to:a� Mayor
Printed Name Of Person Signing Title
91 6 I o
1Dtf YR MO DAY
Signature of APplicaril or Authorized Agent Date Application Signed
C`•
North Carolina General Statute 143-215.6(b)(2).provides that: Any person who knowingly makes
any false statement representation, or certification in any application, record, report, plan,
or other document files or required to be maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, or who falsifies, tampers with,
or knowingly renders inaccurate any recording or monitoring device or method required to be
operated or maintained under Article 21 or regulations of the Environmental Management
Commission implementing that Article, shall be guilty or a misdemeanor punishable by a fine
not to exceed $10,000, or by imprisonment not to exceed six months, or by both. (18 U,S,C.
Section 1001 provides a punishment by a fine or not more than $10,000 or imprisonment not
more than 5 years, or both, for a similar offense.)

C
1. facility (sge Instructions)
Give the name, ownership, and physi.
GI location Of. the plant or other
operating facility where discharge(s)
prosontly Occurs) or will occur.
Name
Ownership (Pudic, Private or
Both Public Imp Private).
Check block If a Federal facility
and give GSA Inventory Control
Number
Location:
Number i Street
City
County
State
g. Discharge to Another Municipal
Facility (see Instructions)
i Indicate it part of your discharge
Is Into a municipal waste trans-
port system under another N,
sponslble organlyatlOn If yes,
complete the Fast Of this Item
and continue with Item 7. If no,
go directly to Item 7.
0. Responsible Organization
Receiving Discharge
Name
Number 6 Strget
City
State
Zip Code
C. Facility Which Receives Oboharge
Give the name of the facility
(waste treatment plant! Which A
celvn and Is ultimately eso(
slble for treatment of the Oilcharge
from your facility.
d. Average Daily Flow to Facility
(mgd) Give your average daily
flow Into the receiving facility.
7. Facility DIR:harges, Number and
Discharge Volume (we Instructions)
Specify the number of discharges
described In this application and the
volume of water discharged or lost
to each of the categories below.
Estimate average volume per day In
million gallons per day. Do not Ifh
clude Intermittent or noncontinu OSR.
overflows, bypasses or seasonal dlt
charges from lagoons, holding
Ponds. at0
/OR AOENCv USE
Manteo Wastewater Treatment Plant _
Town of Manteo (New WWTP)
®PUB ❑PRV ❑Bw
❑ FED
teM,�yea Bowsertown Road Site (Treatment Plant)
+esr Manteo _
+a Dare County _.
North Carolina _.
1104110
701R
❑ves MNo
N/A
N/A
N/A
AT/A
N/A ,god
I-2

row wngNcv use
To: Surface water
Surface Impoundment with
no Effluent
Underground Percolation
well (I nlectlon)
Other
Total Item 7
if -other' Is specified, describe
If any of the discharges from this
facility are Intermittent. with as from
overflow or bypass poml4 a an
seasonal or periodic from I0900ns.
holding Ponds, etC., complete Item g.
g. Intermittent Discharges
A. Facility bypass points
Indicate the number 01 bypass
points for the facility that are
discharge polnlf.(see Instructions)
b. Facility Overflew Points
Indicate the number of overflpw
points to a surface water for the
facility (see Instructions).
C Seasonal or ►eriodic Discharge
Points Indicate the number of
points where seasonal discharges
"Cur from hotding ponds,
lagoons, stc
g. collection System Type
Indicate the type And length (In
miles) of the collaCtion system used
by this facility. (see Instructions)
Separate Storm
Separate Sanitary
Combined Sanitary and Storm
Both Separate Sanitary and
Combined Sewer Systems
Both Separate Storm an:
Combined Sewer Systems
Length
10. Municipalities or Areas Served
(sea Instructions)
Total Population Served
Number of
Discharge Points
107a1 1
107b1
107011
10711
10701
1
lossN/A
N/A
IMg-
loge NIA
toga
❑ SST
® SAN
O CSS
❑ BSC
loss { OSSC
tj 8.3 miles
/07es.
107og
lines
11074111111
Total Volume Discharged,
Million GallonsMr Day
1.0 '
Name
Town of Manteo
1.0
Actual Population
Served
a6
11,260
ieiF .
ices
►eo
1-3

FOR AOf NCV Uf!
It. AVenge Dally Industrial Flow 0.001
Total estimated avenWillige daily wh 12T nigd
Row from all Industrial soureea
Note: All major industrial (as defined In Section IV)
wivna. ��ee to the municloal system must IN
tilted In Section IV.
12. Permits. Licenser and Appllcatlons
List all existing, gentling or denied permits, Ilcamun and applications related to discharges from this faclilly.(ses Instructions)
9e Y l For (Type of Permit l I v^ Dah'^^ I V � oat
^rod I Data I Ea pirat oe
Issuing A nc Agency Use ID Number Filed Isfued Denied Data
orI.1calIN . ve.unrne vu.un,ne
2.
2.
12. Maps and Drawings
Attach all required maps and drawings to the back of this application. (see Instructions)
fe. Additional llrformatlorl
Item
Number
Information
12,
This is a new facility. The existing facilities are as follow as
permitted by Division of Environmental Management:
1. NPDES Permit NCO025488 - Manteo Wastewater Treatment Plant
on een Elizabeth Avenue 0.25 MGD.
2. Permit No. 10905 - Town of Manteo Wastewater Treatment Plant
(Rotary Disbributors) 0.125 MGD
3. NPDES Permit NCO060402 - Roanoke Properties, 0.10 MGD
*The Town of Manteo has an Agreement to treat wastewater
from the Roanoke Properties development known as Pirate's
Cove.

STANDARD FORM A —MUNICIPAL /OR AG[NCY Uf[
SECTION U. BASIC DISCHARGE DESCRIPTION
Complete this section for each present W proposed discharge Indicated In Section 1, Items 7 and d, that Is to surface watws. This Includes
discharges to other municipal sewerage Systems In which the waste water does not go through a treatment works prior to being 01Kh819ed to
Surface waters. Discharges to Wells must be described where there era alb discharges to attract webers from this facility. Mparete
MKnptions of each discharge are required even H several dlschardeS Originate In the items I@Cp Ry All Values for an existing discharge should
be representative of the twelve PlOVIOps months Of OPWSUOS. If this IS a proposed dlKherpe, Wslues should gf*cl best gnglnosring estimates.
ADDITIONAL INSTRUCTIONS FOR SELECTED ITEMS APPEAR IN SEPARATE INSTRUCTION BOOKLET AS INDICATED. REFER TO
BOOKLET BEFORE FILLING OUT THESE ITEMS.
1. Dhc"•:•• c.�.� w. ier Neme 001
a. Discharge set"$ No. I told
(see Inslrutllons)
Jr. Discharge Name io1D
Town of Manteo Discharge
Give name of discharge. If any
(see Instructions)
a Previous Discharge Sahel No i01a N/A
If a previous NODES permit
application was made for this dlr
Charge (Item a. Section 1) Pfwide
previous discharge Swlal number.
i. Discharge Operating Dates
a. Discharge to Begin Date
It the 6.fcha,❖ ha! never
OCCWfed t., la planned for some
future date. 91ve me Cats the
discharge w111 begin.
b. Discharge to End ace it the air '
charge Is Scheduled to be diK06
bnued within the next 5 years.
give the date (within best estimate)
the discharge will end. Give res-
son for discontinuing this discharge
in Item 17.
s. Discharge Location Name the
polltlCal,boundaries within which
the point Of d0$tn419e Is located
State
County
(If applicable) City or Town
a. Discharge Point Description
(see Instructlol,S)
Discharge IS Into (Check one)
Stream (Includes ditches, arroyos,
and other waterCWrNS)
Estuary
Lek@
Ocean
Well (Injection)
Other
11'other' IS Checked. Specify typo
S. Discharge Point — Lot/Long.
Stale the precise location of the
point of Olsch8r94 10 Ua nearest
second. (1K Instructions)
Latitude
Longitude
ML...�92 9
YR MO
tea N/A_
YR MO
Agency cy Use
North Carolina
Dare
Manteo
I] STR
CtEST
❑ LKE
❑ OCE
WEL
❑ OTH
54 MIN. 15 SEC
40 MIN. 03 SEC
11.1 This section contains 8 Pate@.

S. Discharge Receiving Water Name
Name the waterway at the point of
dlscharge.(tea intructions)
It the discharge Is through an out -
fall that axtands beyond the shoreline
or is below the mean low water line.
complale Item 7.
7. Offshore Discharge
a. Discharge Distance from Shrsre
b. Discharge Death Below Water
Surface
If discharge Is from a bypass or an overflow 1
as applicable, and continue with Item 11.
a. Bypass Discharge (sea Instructions)
a. Bypass Occurrence
Check when bypass Occurs
Wet weathof
Dry weather
b. BYpast Frequency Glvetne
actual or approximate number
of bypass Incidents per year.
We Weather
Dry weather
C. Bypass Duration Glvathe
average bypass duration In hOuf4
Wet weather
Dry weather
O. Bypass Volume Give the
average volume per bypass Incident.
In thousand Salton.
Wet weather
Dry weather
a. Bypass Reasons Give reasons
why bypass oocurL
DISCHARGE SERIAL NUMBER FOR AGENCY USE
001
.'1 Shallowbag Bay
For Agency Use
I{
For Agency Use
am
703a
k
Mfg"
feat
0
M7b
feel
iolnt or It a "atonal discharge from a lagoon,
holding pond, etc., complete Items s, 9 or 10.
N/A
Met 1 ❑ Yet ❑ NO
iBBOi, ❑ Yes ❑ No
_dinar per Year
_times par year
Met _houn
MBON _hWn
owl thousand gallons 00 Incident
EBBIIE thousand gallons per Incident
Proceed to Item 11.
S. Overflow Discharge (tee Instructions) N/A
a. Overflow Occurrence Check
when overflow occurs.
We weather -
EBpt
❑ Yes ❑ No
Dry weather
�Mp!
❑ Y" ❑ NO
b. Overflow Frequency Give Me
actual or approximate Incident%
r,(a4lT
per year.
Wet weather
ZOOM
_times Per year
Dry weather -
MlbR'.
_tlmn per year

DISCHARGE SERIAL NUMBER
POR AGENCY USB
L OverlloW Duration Give the
average overflow duration q
houm
Wet Weather
Dry Weather
O. Oven owl Volume Give the
average volume bar overflow,
Incident In thousand 91110M
Wet Weather
Dry weather
Proceed to Item 11
10. SessonaVMrlodic Discharges
►. Seasonal/Mrlodlc Discharge
Frequency If discharge IS Inter•
mittent from a holding Pond,
lagoon, etc., glue the "Net W
approximate number Of time
this discharge Occurs par yaw.
b. Seasonat/PsnOdic Discharge
Volume Give the average
volume Par discharge occurrwKe
In thousand allots.
G Saasonal/Periadic Discharge
Duration Give the average dur►
lion Of each discharge Occurrence
In daYL
d. Seasonal/Periodic Discharge
Occurrence—Manths Check the
months during the year when
the discharge normally occurs.
11. Discharge Treatment
a. Discharge Treatment DMcfIPtlOn
Describe wasta abatement prao-
lices used on this discharge with
a brief narrative. (Sas Ini
lions)
001
_Noun
gallon. off Incleant
—thousand galloM per kKidW4
N/A time Per yew
thousand WIIOM pW discharge,o aerie
❑JAN ❑FEB ❑MAR
❑AP,R ❑MAY ❑JUN
❑JUL ❑AUG ❑SEP
❑OCT ❑NOV ❑DEC
The proposed wastewater system for the Town of Manteo
will consist of a dual train activated sludge removal
system as shown on the attached schematic within this
permit application. This system will consist of flow
equalization; standby power; a multi -channel aeration
system wherein the wastewater is subjected to alter-
nating anaerobic/aerobic sludge zones in order to
accomplish the biological process; system is standard
clarifier units; tertiary filters; ultraviolet disin-
fection; pump stations; and force main for a pumped
effluent to Shallowbag Bay. Sludge is aerobically
digested and dewatered.• Ultimate sludge disposal will
be by means of land application.
II-3

DISCHARGE SERIAL NUMBER
001
b.Discharge Treatment codas
T.ble 1
Of the Instructlon Booklet,
I
2116.
See schematic (included)
Oescripe the wf3ts abatement
ptocesses applied to this dW
charge In the order In which
they Occur. If possible.
Separate all Codes with pOMr
except where flashes are used
to designate Parallel Operatlon4
It this discharge Is from amunicipal waste
\
treatment plant (not an overflow Or
by"u), complete items 11 and 13
12. Plant Design and Operation Manuals
N/A
Check which cl the following am
Currently available
a. Engineering Design Report
3"ft
O
b. Operation and MalntenanCe.:
Manual
t1H".
13
13. Plant Design Data (see Instructions)
a Plant Design Plow ( mgd:)
:.
the (.
1.0 mgd
b. Plant Design BOD Removal (%)
t »;.
95 %
a. Plane Design N Removal 1%)
2124 '
98 %
d. plant Design ► Removal (%)
t13d.
98 K
a. Plant Design SS Removal (%)
tIft
95 %
1. Plant Began Operation (year)
in at
1992
a Plant Last Major Revision (year)
St70,
NIA
FOR AGENCY USE
II-4

DISCHARGE SERIAL NUMBER
Town of Manteo
N00025488
14. DaacHF11en of InelYant and Ellluallt (me Instructions)
Analysis for January 1, 1989 through Dec. 31,
FOR AGENCV USE
1987
Influent
Effluent
Pa
g
�
Y
V
Parameter and Code
<
;
°
`e
214;
E I
E
<>
<>
<
S <
a <
Z <
A
(1)
(2)
(3)
(4)
(S)
(6)
(1)
Flow
Million gallons per day
0.167
0.099
0.237
Daily
365
O O
Nrt
50050
MGD
MGD
MGD
Continuou
:J' '
PH
'
Units
W
00400
Temperature (winter)
7462B
57.0°F
56. 5 OF
51.60
60.4°F
Daily
20
0
Temperature (summer)
0
'F
79.8°F
79.60
78.60
80.4°F
Daily
80
a",
74027
Cr
Fecal Streptococd Bacteria
Number/100 ml
74054
X
X
(Provide if available)
Fecal Coliform Bacteria
Number/I00m1
7/100
Daily
20
w
74055
X
X
Mo .
(Provide if available)
Total Coliform Bacteria
Number/100 ml
74056
(Provide if available)
mg/DlS�y
136.9
8.7
5.7
13.8
5 Per
260
nE3
00310
MG/L
MG/L
MG/L
MG/L
Veek
o
Chemical Oxygen Demand (COD)
mg/l
00340
(Provide if available)
.
OR
Total Organic Carbon (TOC)
Mtn
00680
(Provide if available)
(Either Dlalyss is acceptable)
Chlorine —Total Residual
Mgt]
1.28
0.7
1.7
5 Per
260
w
50060
MG/L
MG/L
MG/L
Week
Cr
U-5

(VOTE: Test
results
reported to
the Town as
Nitrate -Nit
values here
reflect bo
together.
DI CNARO S IAL NUMBER
own oafanteo
NCO025488
14. Description of Influent and LNluent (see Instructions) iContlnued)
FOR AeeNCY USE
Influent
Effluent
Parameter cod Codes,
7
`
td
<
<
i>
>
pq
°
F.
6
(1)
(2)
(3)
(4)
(5)
(6)
(l)
Total Solids
mg/l
00500
Total Dissolved Solids
597.2
431.7
346
579
1 Per
52
�•3
70 300
MG/L
MG/L
MG/L
MG/L
Week
m o
i
Total suspended Solids
_
m
H.p
Milli
128.6
9.5
5.8
15.3
5 Per
260
rD b
00530
MG/L
MG/L
MG/L
MG/L
Week
°
Settleable Mattes (Residue)MIA
5.2
<0.1
<0.1
<0.1
5 Per
260
w
00545
MG/L
MG/L
MG/L
MG/L
Week
Ammonia (u N)
m o
'"g/I
1.70
0.20
4.62
1 Per
52
((P10
rovide if available)
MG/L
MG/L
MG/L
Weeks
IQeldahl Nitrogen
3 Per Yr
m
mg/I
2.06
1.32
2.64
in April
3
; °a
00r625
MG/L
MG/L
MG/L
July &
rD
if available)
October
Nitrate (as N)
3 Per Yr
to 0
Mgt]
6.46
3.60
9.00
in April
3
00620
MG/L
MG/L
MG/L
July &
fD
(Provide if available)
Nit —Nit
Nit —Nit
Nit —Nit
October
t%trite (u N)
-
mg/i
00615
(Provide if available)
_ Phosphorus Total (as P)
3 Per Yr
3
mgll
1.38
1.00
2.12
in April
Ho
re
00665
MG/L
MG/L
MG/L
July &
o
(Provide if available)
October
i
mAA Ned Oxygen (DO)
6.0
4.9
7.0
5 Per
260
n
00300
MG/L
MG/L
MG/L
n-6

FOR AOENCv VSE
DISCHARGE SERIAL NUMBER '
NOTE; None available. 001
15. Additional Waab,rtar CIIMaet~'Cg
Chad, in* box naxt to aacn Fararnstor If It It nrarnt In the affluent. far Instructions)
Parameter
Parameter
"
Parameter
(215)
u
(215)
(215)
a
_
o.
ti
Bromide
Cobalt
Thallium
71870
01037
01059
Chloride
Chromium
Titanium
0D940
01034
01152
Cyanide
Copper
Tin
00720
01042
01102
Fluoride
Iron
Zinc
00951
01045
01092
Sulfide
Lead
Algicides'
00745
01051
74051
Aluminum
Manganese
Chlorinated organic compounds*
01105
01055
743052
Antimony
J71901900
Mercury
Oil end grease
01097
00550
Arsenic
Molybdenum
Pesticides'
01002
01062
74053
Beryllium
Nickel
Phenols
01012
01067
32730
Barium
Selenium
Surfactants
01007
01147
38260
Boron
Silver
Radioactivity'
01022
01077
74050
Cadmium
01027
*Provide specific compound and/or element in Item 17. if known.
Pesticides (Insecticides, fungicides, and rodenticides) must be reported in terms of the acceptable common names specified in Acceptable Corrr-
mon Names and Chemical Names for the Ingredient Statement on Pesticide Labels, 2nd Edition, EnvuonmenW Protection Agency, Washington,
D.C. 20250, June 1972, as required by Subsection 162.7(b) of the Regulations for the Enforcement of the Federal Insecticide, Fungicide, and
Rodenticide Act.
11-7

DISCHARGE SERIAL NUMBER
14. Plant Controls CMCk If the follor
Ing plant Controls are avNbine'
for this discharge
,
Alternate powor source for major
w f
purnptng htlllty Including those
(p-«:t;
for collection systoln lift stations
® APS
Alarm for ppWM or WYIpnMnt
17. Additional Infornatlon
MIT
FOR AGENC V US!
11-8 *U. S. wviceNMsa ramr nc who' p..1 n. sw.o:

' ROR AGENCY VSC
STANDARD FORM A —MUNICIPAL
SECTION III. SCHEDULED IMPROVEMENTS AND SCHEDULES OF IMPLEMENTATION
This section requires Information on any uncompleted Implementation schaduhl which hes been Imposed for construction Of waste treatment
facilities. Requirement schedules may have been eslabllsned by IOCAI, State,pr Feti agencies or by court action. IF YOU ARE SUBJECT TO
SEVERAL DIFFERENT IMPLEMENTATION SCHEDULES, EITHER BECAUSE OF DIFFERENT LEVELS OF AUTHORITY IMPOSING
DIFFERENT SCHEDULES (ITEM lb) AND/OR STAGED CONSTRUCTION OF SEPARATE OPERATIONAL UNITS (ITEM It). SUBMIT A
SEPARATE SECTION III FOR EACH ONE. FOR AGENCY VSE
1. Improvements Required �' .� y off:,
s AGENCY
4
a. Cuscnarp Serial Numbers SOp Bc11eQ.IgO--.+^;,. ,
Affected USA the dlKMrg
serial numl assl9ned in SAC'
lion it, that are covered by this
Implementation KMdule
O. Authority ImpOSInS RequlnlMnt
Chace, the appropriate Item Ind4::I^ (i
eating the authority for the IOf
plementatlon schedule. If the
Identical Implementation Kited-
Yle has been ordered by more Jx{Jj
than OM authority. check the '
appropriate Items. (Maio-
structlons)
86ter Q LOC
Locally oh eloped Plan `i,�z'js:. Q ARE
Areaw We glen QBAS
Basin Pis.
State approved Implementation ERSOS
schedule
Federal approved water quality %1 . ❑ WOS
standards Implementation Ilan
Federal enforcement Procedure QENF'
Off action Q CRT
Stale court order Q FED
Federal court Order
C. Improvement DaKApllon Specify the 3chalKlw code for Ian
General Action D rscrlDtion In Table 11 that test describes the
Impr Overmwntl required by the Implementation schedule. if Inge
than one schedule &PPlles to me facility because 01 a staged con"
structlon schedule, state the stag Of construction being described
Pere with the appropriate general action COde. wbmk a separate
Section 111 /or each stag of construction planned. Ala, Ilet all
the 3-character (Spetllk Action) Codes which describe In'more -
Oelall the pollution abatement practices that the IMPlenwntatiM
schedule requires.
3�cnaractef general Ktion New
ascription 701a.
3-CMocter Spain action PRI SEC TER DIS IPU FUM OUT.
descriptions1010 .—/— /—/—/
7. Implementation Schedule and 3. Actual COmPlatta Data
Provide dates imposed by schedule and any actual data of Complollon for Implementation stops
listed below. Indicate data al accurately as possible. (la Instructions)
imDlemantatlon Steps
i. Schedule Vr /Mo x1
�3O
3. Actual Completion (Yr /MO /Day)
a. Preliminary plan complete
307a
e u:
It. Final plan complete—/—/-
90 11 30
>_N
I Financing complete L contract
:Pie
—/—/—�
—/—/—
Awarded
90 11 30
a. site acquired
aoaa
/—/—
1
9207e
a. Bin co�.structlOn
aw
/—/01
93 / 10 115—
I. End construction
atilt-
—/_/—
%"
93 0815V:`
9, Begin Discharge
ao=ti
—/—/—
/ 04
n. operational level attained
son94
—/01
rhla section contains 1 page.
III.1
CPO a65a0T

FOR AGENCY USE
y
STANDARD FORM A —MUNICIPAL
SECTION 17. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a deatriptlon of each major Industrial faalllty discharging to the mu Mtlyl system. wing a separate Wild" IV fo each facility oast^p'
lion. Indicate the a dlglt Standard Industrial Classification (SIC) Code for the Industry. the motor product or raw material. the flow tin t"—
send gallons par day). and the Characteristics Of the wastewater discharged from the Industrial facility Into the municipal WItAll 1. Conwlt : able
III for standard measures 01 Products o rew materials. (see Instructions)
1. Myor Contributing Fsell"
(sea Instructions) Weeping Radish
Name I a018 I
NumberL Street
City
County
State
Zip Code
S. Primary Standard Industrial
Classification Code (sea
Instructions)
0. Prindpal Product w Raw
Material (fee Instructions)
Product
Raw Material
a. Flew Indicate the volume of water
discharged Into the municipal eye'
lam In thousand gallons Par day
and whether this discharge Is Inter-
mittent or continuous.
S. Pretreatment Provided Indicate it
pretreatment Is provided prim to
entering the municipal system
S. Characteristics of Wsstewatar
(see instructions)
40ga1
alasbj111
so:
soga
405b
a0aa
awe
405
P 0 Box 1471 Hwy. 64 _
Manteo
Dare —
North Carolina
27954
2082
Units (Sea
Quantity Table III)
Beer sa,` •05e —
Hopps 'Yeast Malt Water agpal esr —
0. 5 thousand gallons par day
® Intermittent lint) QContinuous(con)
ayes ONO
IV-1
This section contains I page.
fir $65J06

{
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
Town of Manteo
NCO079057
Domestic - 99.95%
Proposed
Renewal
Shallowbag Bay
SC
030151
Dare
WaRO
C. Lowe
06/30/92
D36NW
Request #
A
flEBEIvyt
WA§ 0N00N-0FFIBE
A? 4 1992
D. E� M.
1011
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
Tidal
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
This is an existing renewal for proposed facility. Facility will tie on existing Manteo WWTP
(NC0025488), Manteo land application facility, and Roanoke Properies (aka Pirates Cove -
NC0060402).
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:Date: -70c1')
Reviewed by
Instream Assessment
Regional Supervisor:
PerLrn is & Engineering: // liatr:
RETURN TO TECHNICAL SERVICES BY: AUG T 9 1992

CONVENTIONAL PARAMETERS
Existine Limi
Monthly Average
Summer
Winter
Wasteflow (MGD):
1.0
1.0
BODS (mg/1):
5
10
NH3N (mg/l):
2
4
DO (mg/1):
6
6
TSS (mg/1):
30
30
Fecal Col. (/100 ml):
14
14
pH (SU):
6.8-8.5
6.8-8.5
Residual Chlorine (µgp):
17
17
TP (mg/1):
Monitor
Monitor
NOx (mg/1):
Monitor
Monitor
TKN (mg/1):
Monitor
Monitor
Recommended Limi
Monthly Average
Summer
Winter
Wasteflow (MGD):
1.0
1.0
BODS (mg/1):
5
10
NH3N (mg/1):
2
4
DO (mg/1):
6
6
TSS (mg/1):
30
30
Fecal Col. (/100 ml):
14
14
pH (SU):
6.8-8.5
6.8-8.5
Residual Chlorine (µgp):
17
17
TP (mg/1):
Monitor
Monitor
NOx (mg/1):
Monitor
Monitor
TKN (mg/l):
Monitor
Monitor
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
(Dly Max)
WQ or EL
WQ
WQ
WQ
WQ
WQ
(Dly Max)
_X_ 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.
•o
No parameters are water quality limited, but this discharge may affect future allocations.

INSTREAM MONITORING REQUIREMENTS
Upstream Locations: (1) mouth of Doughs Ck (2) near mouth of Scarboro Ck
Downstream Locations: (1) Shallowbag Bay app. 800 ft NE of Sandy Point, (2) Shallowbag Bay apl
mile SW of Ballast Pt, (3) Roanoke Sound app 200 It outside Shallowbag Bz
(See Map for locations)
Parameters: DO, temp, pH, salinity, fecal coliform
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Agquacy 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
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Facility should consist of dual train treatment process with standby power.
Recommend diffusor be required. Pipe should be buried deep enough to prevent damage from
trowlers and actual outfall should be marked clearly with a light.
Wasteload sent to EPA? (Major) `% (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? q (Y or N) If yes, explain with attachments.
10Y_ �FIY�lmpiu�� �CCG}�

Facility Name nF 17W)lec) Permit# NCb79o5-� Pipe# C;OI
ACUTE, TOXICITY PASS/FAIL PERMIT,.,LIMIT (QRTRLY)
The permittee shall conduct acute toxicity,tests on a (Zaarterly basis using protocols. defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology For Determining Acute ToxicityIn A Single Effluent
Concentration.!' . Thea F ., monitoring shall be. performed as'athead•Minnow 0 exhales romelas :24-fioouu_r'stativ
tte t, usmg.efflucnC collected as a 24"hour composite? The effluent concentration at which there maybe' at no, time
significant acute mortality is 90% (defined as treatment two in the North Carolina procedure document). Effluent
samples for self-momtoring,purposes must be obtained during representative effluent discharge below all waste
treatment -The first -test will be performed after thirty days from,the effective date of this permit during'thi ,
months of 1)�T vita j P4D✓
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 TGE6C.
Additionally, DEM Form AT-2 (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 fmm either these monitoring requirements 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 nummurn control organism
survival and_appropriate; environmenta1-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 lmonitoring requirements...
7Q10 Ado / cfs
Permitted Flow MGD Recommended by:
Basin & Sub -basin A7:51
Receiving Stream SWlln J122r. 6ct -)
,.i County xii P_ Date 7A.3I gz. ,
QAL P/F Fathead 24 Version 9191

\ :' 'Tn*tam Sampl'n Locr.}�oru Fps Poxd lYldr�ko d1Scha� \ 6
\ (Ncoo�gO9,7 © 1
C_.
310NAL AI
(2
7 ^2
1�
/
�II
rsl• II \ 1123
Light
2 1\
�l A
1l
1� v
VA
\q
\ O,
\� - �.— - Baum Point
®_ \ �9
Light°\\5
_�— , v T
\\\.
I '
Ballast
V
Point
® u
�®tv., --Sandy Point. von —; oLlght
} S h 11O W b-a q B a y
Light i
a/
\V 1.
ZM
•Well Field) l ^6
/ 1128� Site �vA��� v r
- =Turn - �•✓v \\ rf
}
R A.\ A N.�D
1_
�.ra _
3
p
lk
C � � BM•
�.Ot SQ1❑ a[7
0'
p/ y
n
NA
>. u
b
�_,CaLforwa

r
DIVISION OF ENVIRONMENTAL MANAGEMENT
15 September 1992
MEMORANDUM f j � '!
RECEIVED
TO: Ruth Swanek SEP 16 1992
In -Stream Assessment
FROM: P Jim Mulligan TECHNICAL SUPPORT BRANCH
Regional Supervisor 4
Washington Regional Office
SUBJ: Manteo WLA
Dare County
While it
may seem to be a
positive step to go from
the
existing 0.25
MGD discharge at secondary effluent limits to a
1.0
MGD discharge
at BOD of 5 mg/l and
ammonia of 2 mg/l, I do not
find
the evidence
predicting a lack
of impacts compelling.
The
wasteload allocation is therefore
not recommended.
The potential for dissolved oxygen impacts as a result of the
effluent may violate stream standards and endanger the use of
Doughs and Scarboro Creeks as primary nursery areas.
cc: Roger Thorpe
SEP 2 1 1992
TECHNICAL SUPPORT BRANCH

NPDES PR:;IRI.A'IMSPI' INi-ORMATION RD�UEST FORM
quo b 2sr 9�
FACIZITY NAME: /✓
i
REQUESTER: 4S
DATE
NPDES. NO. NCOO O� !
!
// REGION: i!
PERMIT CONDITIONS COVERING PREIREATT,=
This facility has no SIUs and should not have pretreatment language. !
This facility should and/or is developing a pretreatment program.
Please include the following conditions:
Program Developnent
" L Phase I due
Phase II due
JUN 2 9 1992 Additional Conditions
v (attached)
! �', This facility is currently impleenting a pretreatment program.
THAICAL' $UPPd�jeffMyoclude the following conditions:
Program Implementation
Additional Conditions
! (attached)
c
SIGNIFICANT INDUSTRIAL USERS' (SIUS) ODNTRIBUTIONS
SIU FUM =AL:
so •• i0•. •
HEADWORKS REVIEW
i PASS
! PARAMEi'SR !THROUGH
i - ! ALL1✓WABLE
Cd
Cr
Cu
! Ni
Pb
Zn ..
CN
! Phenol
Ocher,
i
M
TEXTILE: MGD !
METAL FINISHING: MIGD !
OTHER:MCA !
MGD
i
MM
i
MSD
i
DAILY ROAD IN LBS/DAY ACTUAL
DOMESTIC PERMITTED INDUSTRIAL % REPIOVAL
i
RI�EIVED: / / REVIE%gED BY:
i

To: Permits and Engineering Unit
Water Quality Section
Date: 07/17/92
RECEIVED
'JUL 2 9 1992
TECHNICAL SUPPORT BRANCH
NPDES STAFF REPORT AND RECOMMENDATION
County Dare
Permit Number NCO079057
PART I -- GENERAL INFORMATION
1. Facility and address: Manteo Wastewater Treatment Plant
Town of Manteo
Post Office Box
Manteo, NC 27954
2. Date of investigation: July 13, 1992
3. Report prepared by: Scott Jones
4. Person(s) contacted and telephone number(s):
Frank Stacho, ORC - [phone]
S. Directions to site: Take U.S. Hwy 64 East to Bowsertown
Road - Turn Right. Travel 0.15 miles. Plant
entrance on the left.
6. Discharge Point(s), List for all discharge points:
Latitude: 35' 54' 24" N, Longitude: 750 39' 28" W
Attach a USGS map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No. D36NW USGS Quad Name - Manteo, NC
7. Size (land available for expansion and upgrading):
Total Site Area is 22 acres. After facility
construction approximately 14-15 acres will remain
for future upgrades and expansion.
u

S. Topography (relationship to flood plain included):
Flat - Site is 6 feet above sea level. Seasonal
high wetness condition exists between 18 and 36
inches below original ground surface.
9. Location of nearest dwelling: 500 feet
10. Receiving stream or affected surface waters:
a. Classification: SC Shallowbag Bay
b. River Basin and Subbasin No.: 030151
C. Describe receiving stream features and
pertinent downstream uses: Shallowbag Bay
borders SA waters which are classified for
shellfish harvesting.
PART II -- DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 99.95% Domestic
0.05% Industrial
a. Volume of wastewater: 1.00 MGD (Design Capacity)
b. Types and quantities of industrial wastewater:
Weeping Radish Brewery - 500 GPD
C. Prevalent toxic constituents in wastewater:
None Known - Hopps, Yeast, Malt, Water, Beer
d. Pretreatment Program (POTWs only):
In development Approved
Should be required X Not needed
2. Production rates (industrial discharges only) in pounds
per day:
a:Highest mo. in the past 12 months: lbs/days
b:Highest year in the past 12 years: lbs/days
3. Description of industrial process (for industries only)
and applicable CPR Part and Subpart):
4. Type of treatment (specify whether proposed or existing):
Proposed dual train activated sludge removal system.
System consists of flow equalization, standby power,
multichannel aeration, standard clarifier units,
tertiary filters, Chlorine gas disinfection, post
aeration, pump stations, and force main effluent to
Shallowbag Bay.

5. Sludge handling and disposal scheme:
Aerobic digestion and dewatering; aerated sludge
holding tank; ultimate sludge disposal to land
application contracted through private firm.
6. Treatment Plant Classification: Less than 5 points, no
rating (include rating sheet) IV
7. SIC Code(s): 4952
Primary 01 Secondary 27
Main Treatment Unit Code 1 0 1 3
Part III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grant Funds (municipals only)? Yes
2. Special monitoring requests: None
3. Additional effluent limits requested: None
4. other: None
PART IV -- EVALUATION AND RECOMMENDATIONS
This permit application is for the renewal of a permit that
the Regional office originally objected to due to probable
water quality impacts.
Signature of report preparer
Water Quality Regional Supervisor
Date

RATING SCALj-
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O.vnei or Con act prt,;o,n-, r
Aoddress- w""
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Telephone: 1Ow4) C.�j ,- 7�- I.S
N P D E ", PeFrnit No. \!COO_:j-Q/aL:j__
Nondis'. Per. No._
- -------- -------
E x p ir at i,-, n DnD 1'_- 1�
Existing Facility
New Facility
Rated �J'v:
-
Date:
Reviewed (Tra;n. & Cert.) Reg.
Office M 7/2 2[&
Reviewed (Frain. & Cert.) Central
Office
<
Grade
Plant Class: (circle one) I
II HJ IV Toia: Points_jo,Z
ITEM POINTS
(5) SECONDARY TREATMENT UNITS
(1 ) Industrial Pretreatment Units and/or
(a) Carbonaceous Stage
Industrial Pretreatment Proaram
(i)Aeration - High Purity Oxygen system
20
(see definition No. 33)
Diffused Air System ...........
1 0
(2) DESIGN FLOWOF PLANT IN GPD
Mechanical Air Svstern (fixed,
(not applicable to non -contaminated cooling waters, sludge
floating or rotor) . . ...... ' ' ' '
0
handling facilities for water purification plants, totally
Separate Sludge Reaer,tion ...
3
closed cycle systems (del. No, 11), and facilities
i
(f) Trickling Filter
consisting only of Item (4) (d) or Items (4) (d) and (11) (d))
High Rate . . q .............. .
7
C 2'.,000 1
Standard Rale
20,001 50,0002
Packed Tower...............
5
50.001 100,000 .............. .. 3
010 Biological Aerated Filter of Aerated
100.001 250,000 ..................... 4
Biological Filter ............... q . q .
1 0
250,001 500,000 .............. 5
(iv) Aerated Lagoons ..................... .
10
500,001 _1,000,o00............ .. ... 30
1,000,001 -- 2,000.000
(v) Rotating Biological Conaclors ..........
10
........................
2,000,001 (and up) - rate I point additional for each 10
(v i) Sand Filters-
200.000 gad capacity up to a
maximum of 30
intermittent biological
2
Design Flow (gpd) 600066
recirculating biological . . . . .
3
(3) PRELIMINARY UNITS (see definition no. 32)
Nil) Stabilization Lagoons ...................
-
(a) Bar Screens ......
(vir)CIarfier . q .......................
(5
t
or 1
(i X) Single stage system for combined
(b) Mechanical Screens, Static Screens or
carbonaceous removal of SOD and
Comminuting Devices ...........
O
nitrogenous removal by nitrification
.............2
(c) Grit Removal
(see def. No. 12) (Points for this item
or
have to be in addition to items (5) (a)
(d) Mechanical or Aerated Grit Removal . .......... G)
W through (5) (a) (viii) ............
.08
(e) Flow Measuring Device .......................
W Nutrient additions to enhance BOD
or
removal
5
(f) Instrumented Flow Measurement ........
(xi) Biological Culture ('Super Bugs') addition
(9) Preaeration ..................... 2
to enhance organic compound removal .....
5
q ...........
(b) Nitrogenous Stage
(1-t) !dnfluAnl Plow Equalization .......... ...... 2
(1) Aeration - High Purity Oxygen System
(i) Grease or ul: Separajors Ca4iy 2
Diffused Air System ........
Mect-pnica; ....... 3
Mechanical Air System (fixed,
Dissolved Air Flotation. 8
floating, or rotor) ...... ......
8
(j) Prechlorination ................... 5
Separate Sludge Reaeration .....
3
(ii) Trickling Filter -
(4) PRIMARY TREATMENT UNITS
High Rate ..............
7
(a) Septic Tank (see definition no. 43) .............. 2
Standard Rate............
5
(b) Imhoff Tank ... .... q ....... s
Packed Tower...........:
5
q
(c) Primary Clarifiers ............................ 5
(fill Biological Aerated Filter or Aerated
(d) Setting Ponds or Settling Tanks for Inorganic
Biological Filter .........................
(iv) Rotating Biological Conlaclors
10
Non -toxic Materials (sludge handling facilities
............
(v) Sand Filter
1 0
for water purification plants, sand, gravel,
-
stone, and other mining operations except
intermittent biological . . . . . . . .
2
recreational activities such as gem or gold
recirculating biological . . . . . . . .
3
mining) .................... ................. 2
NO Clarilier ........................ . .. .
5

(6) Tc P,TIAAY UR ADVANCED TREATMENT UNIT (10) CHEM IC6,L ADDITION SY-1 FCM (S) /Sr d(!iniIi3n No. 9)
(a) Activated Carbons Beds (ncl apolicablo,to chemical additions ^nled as item
without carbon regeneration .................. 5 (3) (j), (5) (a) (xi), (6) (a). (6) (b), (7) (b). (y)
with carbon regeneration . . . ................ 1 5 (9) (a), (9) (b), or (9) (c) 5,peinls each: List:
(b) Powdered of Granular Activated Carbon Feed - _ .1
CD
without carbon regeneration ................. 5 . . 5
1_--_---" .
with carbon regeneration .....,. 5 5
(c) Air Stripping ....................... .. 5 — ----- .. 5
(d) Denitrificalion Process (separate process) ..... 1 0
(e) Electrodialysis .............................. 5 (11) MISCELLANEOUS UNITS
(f) Foam Separation ............................. 5 - (a) Holding Ponds, Holding Tanks or Settling Ponds
(g) Ion Fxchange........ :..........
.....
........
5 for Organic or Toxic.. Materials including wastes
(h) Land Application of Treated Effluent from mining operations containing nitrogen a,­I/or
(see definition no. 22b) (not applicable for phosphorous compounds in amounts signific::rtly
sand, gravel, stone and other similar mining greater than is common for domestic wastewater .......... 4
operations) (b) Effluent Row Equalization (not applicable to storage
0) on agriculturally managed sites (See del. basins which are inherent in land application systems). 2
No. 4)................................... 1 0 (c) Stage Discharge (not applicable to storage basins
(i i) by high rate infiltration on non -agriculturally inherent in land application systems ....................................... 5
managed sites (includes rotary distributors (d) Pumps ......... :............ ................ ........................ ................... ............ _.... 3
and similar fixed nozzle systems) ........... 4 (e) Stand -By Power Supply.. ................................................................ 3
(iii) by subsurface disposal (includes low pressure (f) Thermal Pollution Control Device ............................................. 3
pipe systems and gravity systems except at
plants consisting of septic lank and nitriiica-
lion lines only) ............................. 4 TOTAL POINTS t L _
(i) Microscreens.................................. 5
(j) Phosphorus Removal by Biological Processes 20
CLASSIFICATION
(See def. No. 26) ............................
(k) Polishing Ponds - without aeration ....... 2 Class I ........................................................... 5 - 25 Points
with aeration .......... 5 Class IL ....................................................... 26- 50 Points
(1) Post Aeration - cascade .............. 0 Class ill....................................................... 51- 65 Points
diffused of mechanical ... 5 Class IV.. ..... ................................................ 66- Up Points
(m) Reverse Osmosis ............................... 5
(n) Sand or Mixed -Media Filters - low rate ........... 2 Facilities having a rating of one through four points, inclusive,
high rate .......... Q do not require a certified operator. Classification of all other
(o) Treatment processes for removal of metal or facilities requires a comparable grade operator in responsible
cyanide .................................... 15 charge.
(p) Treatment processes for removal of toxic
materials other than metal or cyanide ......... 1 5 Facilities having an activated sludge process will be assigned
a minimum classification of Class 11.
SLUDGE TREATMENT Facilities having treatment processes for the removal of metal
(a) Sludge Digestion Tank - Heated ............... 10 or cyanide will be assigned a minimum classification of Class II.
Aerobic ...............
Unhealed ............. 3 Facilities having treatment processes for the biological removal
(b) Sludge Stabilization (chemical or thermal) ....... 5 of phosphorus will be assigned a minimum classification of Class
(c) Sludge Drying Beds - Gravity ................. 2 III.
Vacuum Assisted ....... 5
(d) Sludge Elulriation ................... A ......... 5 In -plant processes and related control equipment which are an
(e) Sludge Conditioner (chemical or thermal) ........ 5 integral part of industrial production shall not be considered waste
(I) Sludge Thickener (gravity) ...................... 5 treatment. Likewise, discharges of wastewater from residences
(9) Dissolved Air Flotation Unit having a design flow of 1,000 gpd or less, shall not be subject to
(not applicable to a unit rates as (3) (i) ......... B rating.
(h) Sludge Gas Utilization (including gas storage) .... 2
(i) Sludge Holding Tank - Aerated ................ 5 ADDITIONAL COMMENTS
Non -aerated ............ 2 Q I
(j) Sludge Incinerator - (not including activated ( } n •_} (,ln.*s — Lire-.Je—t, 1%eS
carbon regeneration) ..... 10
(k) Vacuum Filler, Centrifuge or Filter Press or other 74��•1-� Tf.;d r� �1au �i;rr,>•n ,.•; `��! feS(�s.a,i�•1�-.
similar dewatering devices .................. D
(6) SLUDGE DISPOSAL (including incinerated ash) 11
1�La - ..... .. 2 ;,,, CGx W.�"l�. OK•G�cn6':'- f'
(b) Land Application (surface and subsurface) ,
(see definition 22a) _
-where the facility holds the land app. permit ... 10
-by contracting to a land application operator who
holds the land application permit ...............
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment:
facility where the sludge is generated _10
(c) Landfilled(burial)*............................. 5
(9) DISINFECTION
(a) Chlorination ........................ ..... 5 - $0Z
(b) Dechlorination ........................
(c) Ozone ..............................
5
(d) Radiation .......................... 5

aQFLN LLQ N_a
: ble
. � —' � ¢r � i matr.;:al Iwm waslew:a er
(i)Aelivated Carbon Bea. A. p.rJ_i. a./c: r::�ur..l method for reds ag :: c.u�r. n�ganc
effluenl: the column -type beds used in Coil molhod will have a (lov; rate varying from two to eight gallons per
minute per square foot and may be cimer upflow or downliow carbon beds. Carbon, may or may no: be
regenerated on the waalewaler ueatrnenl plant site.
(2)Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or
organic matter is reduced through artificially accelerated transfer of oxygen on a flow through basis;
(3)Auralion. A process of bringing about intimate contact between air or high purily oxygen in a liquid by
spraying, agitation diffusion;
(4)Agrict,hurally managed site. Any site on which a crop is produced, managed, and harvested (Crop includes
grasses, grains, Ifees, etc);
(5)Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (pH adjustment)
with the ammonia then released to the atmosphere by physical means; or other similar processes which remove
petroleum products such as benzene, toluene, and xylene.
(6)Carbon Regeneration. The regeneration exhausted carbon by the use of a furnace to provide extremely high
temperatures which volatilize and oxidize L.a absorbed impurities;
(7)Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary' effluent limits.
(0)Centrifuge. A mechanical device in which centrifugal force is used to separate solids from liquids and/or to
separate liquids of different densities;
(9)Chemical Addition Systems - The addition of chemical (s) to wastewater at an application point for purposes of
improving solids removal, pH adjustment, alkalinity control, etc.; the capability to experiment with different
chemicals and different application points to achieve a specific result will be considered one system; the
capability to add chemical (s) to dual units will be rated as one system; capability to add a chemical at difference
application points for different purposes will result in the systems being tale as separate system.
(10)Chemical Sludge Conditioning. The addition of a chemical compound such as lime, ferric chloride, or a
polymer to wet sludge to coalesce the mass prior to its application to a dewatering device;
(11)Closed Cycle Systems. Use of holding ponds or holding tanks (or containment of wastewater containing
inorganic, non -toxic materials from sand, gravel, crushed stone or other similar operations, from which there is
no discharge to the surface waters; such systems shall carry a maximum of two points regardless of pumping
facilities or any other appurtenances;
(12)Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrification - A single stage system
'designed- to achieve 'advanced- permit effluent limits on BOD and ammonia nitrogen within the same biological
reactor.
(13)De-chlorination. The partial or complete reduction of residual chlorine in a liquid by any chemical or physical
process;
(14)Denitrification Process. The conversion of nitrate -nitrogen to nitrogen gas;
(I 5)Eleclrodialysis. Process for removing ionized salts from water through the use of ion -selective ion-
exchanne membranes;
!+6)Fifter Press. A pries- operated mechanically for partially dewatering sludge;
i,7)Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of rerr:oving
excessive amounts of detergent materials through the introduction of air in the form of line bubbles; also called
loam fractionalize;
(16)Grit Removal. The process of removing grit and other heavy mineral mailer from wastewater;
(19)lmhoff Tank. A deep two story wastewater lank consisting of an upper sedimentation chamber and a lower
sludge digestion chamber;
(20)lnslrumenled Flow Measurement. A device which indicates and/or records rate of flow;
(21)lon Exchange. A chemical process in which ions from two different molecules are exchanged;
(22)Land application: (a) Sludge Disposal. A final sludge disposal method by which sludge may be applied to land
either by spraying on the surface or by subsurface injection (i.e., chisel plow); Inot
atepncaule for types of sludge described in (11) of this Rule]; (b)Treated Effluent. The process of spraying
treated wastewater onto a land area or other methods of application of wastewater onto a land area as a means
of final disposal and/or treatment;
(23)Microscreen. A low speed, continuously back -washed, rotating drum filter operating under gravity
conditions as a polishing method removing suspended solids Irom effluent;
(24)Nitrification Process. The biochemical conversion of unoxidized nitrogen (ammonia and organic nitrogen) to
oxidized nitrogen (usually nitrate);
(25)Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of
converting ammonia nitrogen to nitrate nitrogen;
(26)Phosphate Removal Biological. The removal of phosphorus from wastewater by an oxic/anoxic process
designed to enhance luxury uptake of phosphorus by the microorganisms;
(27)Polishing Pond. A holding pond following secondary treatment with sufficient detention to allow for the
settling of finely suspended solids;
(26)Posl Aeration. Aeration following conventional secondary r.nils to increase effluent D.C. or for
any other purpose;
(29)Posl Aeration. (Cascade) A polishing method by which rzygen is added to the effluent by a
nonmechanical, gravity means of flowing down a series of slops or -� c; Thin flow occurring across the steps or
weirs moves in a fairly thin layer and the operation of the cascade requires no operator adjustment; thus, zero
points are assigned even though this is an essential step to meeting the limits of the discharge permit;
(30)Powdered or Granular Activated Carbon Feed. A biophysical carbon process that utilizes biological activity
and organic absorption by using powdered at granular activated carbon; Virgin and/or regenerated carbon is food
controlled into the system;
(31)Preaeration. A lank constructed to provide aeration prior to primary treatment;
(32)Pretiminary Units. Unit operations in the treatment process, such as screening and comminution, that
prepare the liquor for subsequent major operations;
(33)lnduslrial Pretreatment: (a)Pre-irealment Unit, Industrial. The conditioning of a waste at its source before
discharge, to remove or to neutralize substances injurious to sewers and treatment processes or to affect a
partial reduction in load on a treatment process which is operated by the same governing body as the wastewater
treatment plant being rated; (b)Pre-treatment Program, Industrial - must be a Slate or EPA required program to
receive points on the rating sheet;

(34)F'nmary ClariCerz. The firs; settlir,n Iarks through which Iewator is passed in a trnaIin i,l works lot
the pornoso of removing Settleable and suer an?;d solids and ROD Mv,h is associated with the solids:
(35)Pumps, All influent, effluent, and in-p!am pumps;
(3r.)Hadiation. Disinfoclion and/or sterilizalicn procosS utilizing devices emitting ultraviolet or gamma rays;
(37)Reverse Osmosis. A treatment process in which a heavy contaminated liquid is pressurized through a
membrane forming nearly pure liquid free Item suspended solids;
(38)Rolating Biological Conlactors. A fixed biologicaf growth process in which wastewater flours through tanks
in which a series of partially submerged circular surfaces are rotated;
(39)Sand Fillers:(a) Intermittent Biological. Filtration -of effluent following septic tanks, lagoons, or some other
treatment process in which further biodecomposilion is expected to produce desired effluents; Hydraulic loading
rates on these filters are computed in god/ac and have a resulting low gprn/sf (less than one); (b)Rocirculating
biological - the same type of sand filler as lined in (a) with the added capability 10 recycle- effluent back
through the sand filler;
(40)Sand or Mixed -Media Filters. A polishing process by which effluent limits are achieved through a further
reduction of suspended solids:(a)low rate - gravity, hydraulically loaded filter with loading rates in the one to
three gp,n/sf range;(b)high rate -- a press hydraulically loaded filter with loading rates in the five gpm/sf
range; At any rate, the loading rate will exceed three gpm/sh
(41)Secondary Clarifiers. A lank which follows the biological unit of a treatment plant and which has the purpose
of removing sludge associated with the biological treatment units;
(42)Separale Sludge Reaeration. A part of the contact stabilization process where the activated sludge is
transferred to a lank and aerated before returning it to the basin;
(43)Seplie Tank. A singlestory settling Ian% in which settled sludge is in contact with the wastewater flowing
through the tank; shall not be applicable for septic lank systems serving single family residences having a
capacity of 2000 gallons or less which discharge to a nitrification field;
(44)Sludge Digestion. The process by which organic or volatile matter and sludge is gasified, liquefied,
mineralized or converted into more stable organic matter through the activity of living organisms, which includes
aerated holding tanks;
(45)Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested
sewage sludge is dried by drainage and evaporation;
(46)Sludge Elulriation. A process of sludge conditioning in which certain constituents are removed by successive
washings with fresh water or plant effluent;
(47)Sludge Gas Utilization. The process of using sewage gas for the purpose of heating buildings, driving engines,
etc.;
(48)Sludge Holding lank (Aerated and Nonaeraledj. A tank utilized for small wastewater treatment plants not
containing a digester in which sludge may be kept fresh, and supernatant withdrawn prior to a drying method (i.e.
sludge drying beds); This may be done by adding a small amount of air simply to keep the sludge fresh, but not
necessarily an amount that would be reeuired to achieve stabilization of organic matter. A nonaerated lank would
simply be used to decant sludge por. to dewatering and would simply be used to decant sludge prior to
dewatering and would not allow v,, periods (several days of detention) without resulting odor problems;
(49)Studge Incinerators. A furnace designed to burn sludge and to remove all moisture and combustible materials
and reduce the sludge to a sterile ash;
(50)Sludge Stabilization (Chemical or Thermal). A process to make treated sludge less odorous and putrescrible,
and to reduce the pathogenic organism content; This may be done by pH adjustment chlorine dosing, or by heal
treatment;
(51)Sludge Thickener. A type of sedimentation tank in which the sludge is permitted to settle and thicken through
agitation and gravity;
(52)Slzbilization Lagoon. A type of oxidation lagoon in which biological oxidation of organic mailer is effected by
natural transfer of oxygen to the water from air (not a polishing pond);
(53)Sland-By Power Supply. On site or portable electrical generating equipment;
(54) Static Screens. A stationary screen designed to remove solids including non -biodegradable particulate
(floatable solids, suspended solids and BOD reduction) from municipal and industrial wastewater treatment
systems;
(55)Tertiary Treatment. A stage of treatment following secondary which is primarily for the purpose of effluent
polishing; A settling lagoon or sand or coal filter might be employed for this purpose.
(56)Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing in tubes to
another fluid outside the tubes, or vice versa; or, other means of regulating
liquid temperatures;
(57)Tharmal Sludge Conditioner. A conditioning process by which heat is added for a protracted period of time to
improve the dewatorability of sludge by the solubilizing and hydraufizing of the smaller and more highly hydrated
sludge particles;
(58)Toxic Materials. Those wastes or combinations of wastes including disers� rinsing agents which after
discharge and upon exposure, ingestion, inhalation or assimilation into any r..7.y';i;;:;, ,:. ihher directly from the
environment or indirectly by ingestion through food chains, will cause death, :.scene, nrhavioral abnormalities,
r cancer, genetic mutations, physiological malfunctions (including malfunctic, 'e rop �duchon) or physical
.r deformations, in such organisms or their offspring; Toxic materials incluc�, ;./ ,.v, J illustration and not
limitation: lead, cadmium, chromium, mercury, vanadium, arsenic, zinc, ortno-.::uo-chlorebenzene (ONCB
polychlorinaled biphenyls (PCBs) and dichlorodiphenyl hichloroethane (DDT); and any other materials that have
or may hereafter be determined to have toxic properties;
(59)Trickling filter. A biological treatment unit consisting of material such as broken stone or rock over which
wastewater is distributed; A high rate trickling filler is one which is operated at between 10 and 30 m9d per
acre. A low rate trickling filler is one which is designed to operate at one to four mgd per acre;
(60)Trickling Filter (Packed Tower). A plug flow type of opers:ion in which wastewater flows down through
successive layers of media or filtrale material; Organic material is removed continually by active biological
fixed growth in each successive layer. This method may produce 'secondary' quality effluent, or may be
adapted to produce a nitrified effluent;
(61)vacuum Fillers, Centrifuges, or Filler Presses. Devices which are designed to remove excess water from
either digested or undigested sludge prior to disposal or further treatment.