NC0086924_Issuance of Permit_20031124

ç ' JA7 Michael F. Easley,Governor
• ' \QG State of North Carolina
(I,.
o
William G. Ross,Jr.,Secretary
r Department of Environment and Natural Resources
O - Alan W.Klimek,P.E.,Director
Division of Water Quality
November 24, 2003
Mr. J.D. Brickhouse, County Administrator
Tyrrell County
108 S. Water Street Y8 030012 .JAI/'.. <1;
Columbia, North Carolina 27925 g,if J- ,. M
Subject: NPDES Permit Issuance
Tyrrell County Reverse Osmosis Discharge
Permit No. NC0086924
Tyrrell County
Dear Mr. Brickhouse:
In accordance with the application for a discharge permit, the Division is forwarding
herewith the subject NPDES permit, Tyrrell County Reverse Osmosis Discharge, NC0086924. This
permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and
the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated May 9, 1994.
The requirement to monitor chlorine has been removed from the permit, since chlorine is
not used in the raw or concentrate stream. A special condition, Part A.(5.), has been placed in the
permit should these conditions change at some future time.
As stated in the cover letter to the draft permit, because the reverse osmosis plant began
start-up fairly recently, metals monitoring and/or limits cannot be removed at this time. Should
any metals parameters be below detection for a period of 12 months, Tyrrell County may request
that the Division review the data and determine if there is a reasonable potential for these
parameters to occur in the effluent discharge or exceed the proposed limits. If no reasonable
potential exists, those parameters may be removed from the permit.
Since no CORMIX or dispersion modeling has been performed for this facility, the Division
cannot relax or eliminate the current metals limits.
Should the limits given in the permit not be consistently met, the DWQ may require that a
holding lagoon or other type of treatment be installed at the plant.
No major changes have been made to this final permit that were not outlined in the draft
permit and cover Ietter dated August 20. 2003.
If any parts, measurement frequencies, or sampling requirements contained in this permit
are unacceptable to you, you have the right to an adjudicatory hearing upon written request
within thirty (30) days following receipt of this letter. This request must be in the form of a
written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the office of Administrative Hearings, Mail Service Center 6714, Raleigh, North Carolina
27699-6714. Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable except after notice to the Division of
Water Quality. The Division of Water Quality may require modification or revocation and
reissuance of the permit.
North Carolina Division of Water Quality [phone]
1617 Mail Service Center FAX[phone]
Raleigh, North Carolina 27699-1617 On the Internet at http://h2o.enr.state.nc.us/

1
A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
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- Reverse Osmosis Reject
Water. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT DISCHARGE LIMITATIONS Monitoring Requirements
CHARACTERISTICS
Measurement Sample
Monthly Average Daily Maximum Frequency Sample Type Location'
Flow(MGD) 0.216 MGD Continuous Recording I or E
Total Dissolved Solids Monthly Grab E
Temperature Monthly Grab E& Instream
Dissolved Oxygen Monthly Grab E& Instream
Salinity Monthly Grab E&Instream
Conductivity Monthly Grab E&Instream
pH2 Monthly Grab E&Instream
NH3-N 2/Month Grab E
Total Aluminum Monthly Grab E
Total Arsenic 50 ug/L Monthly Grab E
Total Beryllium 0.117 ug/L Monthly Grab E
Total Cadmium 42 ug/L Monthly Grab E
Total Chromium Monthly Grab E
Total Cyanide 1 ug/L Monthly Grab E
Total Iron Monthly Grab E
Total Lead 221 ug/L Monthly Grab E
Total Mercury 0.025 ug/L Monthly Grab E
Total Nickel 75 ug/L Monthly Grab E
Total Selenium 71 ug/L Monthly Grab E
Total Silver Monthly Grab E
Total Zinc Monthly Grab E
Total Copper Monthly Grab E
Chloride Monthly Grab E
TOC Monthly Grab E
Total Fluoride Monthly Grab E
Total Nitrogen Monthly Grab E
Total Phosphorus Monthly Grab E
Acute Toxicity3 Quarterly Grab E
NOTES:
' Sample Locations: I - Influent; E - Effluent, Instream - see Part I, Special Condition A.(4). for locations
and frequencies.
2 The pH shall not be less than 6.8 standard units or greater than 8.5 standard units.
3 Acute Toxicity Monitoring (Mysid) 24hr P/F @ 90%, Quarterly: January, April, July, and October. See
Special Condition A(2). Quarterly toxicant monitoring should correspond with quarterly toxicity testing.
Upon sampling for 12 months, the permittee may request a review of reasonable potential for monitoring and effluent
limitations.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE
AMOUNTS.
Tyrrell County Reverse Osmosis
NPDES Permit No. NC0086924
I :

A (2). ACUTE TOXICITY PASS/FAIL MONITORING (QRTRLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the
North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute
Toxicity In A Single Effluent Concentration" (Revised-July, 1992 or subsequent versions). The
monitoring shall be performed as a Mysidopsis bahia 24 hour static test. The effluent
concentration defined as treatment two in the procedure document will be 90%. Effluent samples
for self-monitoring purposes must be obtained during representative effluent discharge below all
waste treatment. The tests will be performed during the months of January. April, July, and
October.
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 TGE3E. Additionally, DWQ Form AT-2 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Water Quality
1621 Mail Service Center
Raleigh, N.C. 27699-1 62 1
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 there be no discharge of flow from the facility during a month in which toxicity monitoring
is required, the permittee will complete the information located at the top of the aquatic toxicity
(AT) test form indicating the facility name, permit number, pipe number, county, and the
month/year of the report with the notation of"No Flow" in the comment area of the form. The
report shall be submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately until such time that a valid test is submitted. Upon
submission of a valid test, this monthly test requirement will revert to quarterly in the months
specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be
re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate follow-up testing to be completed no later than the last day of the
month following the month of the initial monitoring.
A (3). DISCHARGE SPECIAL CONDITION
The effluent diffuser must be designed to prevent surface turbulence and bottom scour. Should
the location of the discharge cause visible turbulence within Bull Bay, the Division may require
that the discharge be relocated.
The diffuser must be submerged during low tide conditions.
Tyrrell County Reverse Osmosis
NPDES Permit No. NC0086924

A (4). INSTREAM MONITORING REQUIREMENTS
The following parameters shall be monitored within Bull Bay (at the locations indicated) 2/month
year round. Stratified samples (surface (within 1 foot) and bottom) shall be taken for each
parameter.
Parameter Location Fre'uency Months
Salinity(ppt) B, DPt, M l, 2/month January through
Temperature (°C) M2, M3, M4, December (year round)
D.O. (mg/i) M5, M6
pH
Conductivity
B - Background sample should be taken at or near the mouth of Bunton Creek, in the estuary,
outside the influence of the discharge
DPt- at the discharge point (approximately 100 feet from the shoreline)
M1 - along a southwest/northeast transect from the discharge point, approximately 50 feet
northeast of the discharge
M2 - along a southwest/northeast transect from the discharge point, approximately 200 feet
northeast of the discharge
M3 - along a north/south transect from the discharge point, approximately 50 feet north of the
discharge
M4 - along a north/south transect from the discharge point, approximately 200 feet north of the
discharge
M5 - along a north/south transect from the discharge point, approximately 50 feet south of the
discharge
M6- along a northwest/southeast transect from the discharge point, approximately 50 feet
northwest of the discharge
Should instream monitoring indicate little to no effect of the discharge on the salinity or dissolved
oxygen of the receiving water after 2 years of monitoring, the permittee may request that the
monitoring requirements be re-evaluated.
NOTE: Map on the following page is not to scale. The transect attempts to approximate the
optimal sampling points for prevailing winds.
Tyrrell County Reverse Osmosis
NPDES Permit No. NC0086924

A (4). INSTREAM MONITORING REQUIREMENTS (continued)
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Tyrrell County Reverse Osmosis
NPDES Permit No. NC0086924

A (5). Total Residual Chlorine Monitoring
It is the Division of Water Quality's understanding that no residual chlorine will be in the reject
water from the reverse osmosis process. Should this not be the case in the future, the Division of
Water Quality, NPDES Unit, shall be notified immediately and this permit may be reopened to
include total residual chlorine monitoring and a limit.
•
Tyrrell County Reverse Osmosis
NPDES Permit No. NC0086924

1
15)JECEOWEB
AFFIDAVIT OF PUBLICATI( II AUG 2 2 2003
NORTH CAROLINA. DENR-WATER QUALITY
Wake County. )Ss. POINT SOURCE BRANCH
Before the undersigned, a Notary Public of Johnston
PUBIC NOTICE County North Carolina, duly commissioned and authorized to
STATE OFNORTH CAROLINA administer oaths, affirmations, etc., personally appeared Ivy
EPIVIRONN TrAL
f COAAMISSfON
Marsch, who, being duly sworn or affirmed, according to law,
• NPOES UNIT
1617 MAIL SERVICE doth depose and say that she is Billing Manager-Legal
CENTERNCC siw Advertising of The Smithfield Herald a corporation organized
NOTIFICATION OF
INT AITN TO and doing business under the Laws of the State of North
WASTEWATER PERMIT Carolina, and publishing a newspaper known as The
On the basis of thorough staff
r flew one application tat C Smithfield Herald, in the City of Smithfield ,Johnston County
ublic
low.92-500 anStatud other lawful and State aforesaid, the said newspaper in which such notice,
I staindards and regulations,
f m Northtal Corg Management Erwtornoi paper,document, or legal advertisement was published was, at
mission Proposes to Issue a the time of each and every such publication, a newspaper
National Pollutant discharge
Elimination
System meeting meeting all of the requirements and qualifications of Section 1-
`son()listed belit ow o the
597 of the General Statutes of North Carolina and was a
oaf this eootice. ..publish qualified newspaper within the meaning of Section 1-597 of
Written comments regarding the General Statutes of North Carolina, and that as such she
. _p permit
daywillber
Publish ooffethisnotic. makes this affidavit; that she is familiar with the books, files
r
that date ore considered in and business of said corporation and by reference to the files
The-Towq pW�River Dead final determinations re-
The-To a Ekive,er 0 lien"
the Pro�po4sed permit. of said publication the attached advertisement for NC
NC 285631 has appvvliedfor re- he sig at Watrer quality NCtymar
i-
newel of NPDES permit DIVISION OF WATER QUALITY was inserted in the
NCO086997 for its WTP 1&2. decd to hold a public meet-
This permitted fdcility dis int for t��°+"�d 1 ""it aforesaid newspaper on dates as follows: 08/18/03
charges filler-backwash should the Division receive a
wastewater to Plantation Co- significant degree of Public
nal in the Neuse River Basin interest
Currently total residual chick- Copies of the draft gild other Account Number: 73350831
ripe is water qualify limited. suppdrtin9 i formation on
f
This discharge may affect fu- file used to ermine condi-
ture allocations In this por- . ons present in the draft per-
, tion of the Neuse River Basin._mil are available upon
Tyrrell County-Tyrrell Coun- request a�payment of the
tv Reverse 0 s Water Costs of reproduction. Mail
Street,Columbia North Caro Comments and/or require-
lino 27925, has applied for ments for information to the
renewal of its NPDES Division addressWater Quality
renew(NC0086924) permit dif above or call
charging to Bull Bay in the MS Valero Stephens at(919)
Posquatonk River Bgslqq. 733-5083, extension .520.
Same nretals oresrater quoN- P�� include tumber he
oeitedi in
t limited in this permit.Th- Strata
yconi, cl difufi toter-
mayaffectfuture persam may also visit
�i in this portion Of h,•v of Water Quality
the basin. el .. f$ Salisbury Street,
MO:August II-2003 mob NC 276041148 be-
. !Nevi the hours of 8:00 a.m.
and 5:00 P.M.tq review Infor-
The above is c males on file,, the books and files of the aforesaid Corporation and publication.
�, .
/ Billing Manager-Legal Advertising
Sworn or affirmed to,and subscribed before me,this
SEAL
20 day of AUGUST , 2003 AD
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal,the day and year aforesaid.
flifrie,44"‘Not'ary Public
My commission expires 2nd day of July,2005.
•
I

I Hobbs, Upchurch & Associates, P.A.
Consulting Engineers
2522 S.Croatan Highway • Suite 2A • P.O.Drawer 1929 • Nags Head,North Carolina 27959
September 15, 2003
Susan Wilson
NPDES Unit
1617 Mail Service Center
Raleigh,NC 279699-1617
RE: Draft Permit NC0086924 •
Tyrrell County RO Discharge
HUA-TY General
Dear Ms. Wilson,
In response to the Draft Permit issued August 20, 2003, we feel that chlorine monitoring
is not warranted because it is not added nor is it a constituent of the discharge stream.
Additionally we object to the metals limits and maintain that they are unreasonably low
given the specific discharge location, and dispersion mechanics.
Please understand that Tyrrell County wants to be an exemplary steward of the
environment however we do not understand the basis for establishing the limits
and do not feel that the limits established for metals in this permit are process or
receiving stream specific.
Thank you for your efforts in this important regulatory matter.
Sincerely,
Hobbs, Upchurch &Associates, P.A.
,,,,./Z4
Ed Lawler
Construction Manager
Il�CC: J.D. Brickhouse,Tyrrell County Administrator - L SEP 1 6 2003 L J
D: - PATER 01!11!TY
Fu 3i Soj; ,;r: EH.,r;C.H
Nags Head,NC • Telephone [phone] • Fax [phone] • e-mail: [e-mail]
Southern Pines • Myrtle Beach • Raleigh • Charlotte

RE:Tyrrell RO
Subject: RE: Tyrrell RO
Date: Thu, 30 Oct 2003 08:51:23 -0800
From: [e-mail]
To: "Susan A Wilson" <[e-mail]>
Ask them to send you a process diagram indicating the point of chlorine application.
If Cl application is indicated as being after the RO unit and there are
no other sources of wastewater beyond the RO reject, then I think you can
take it out.
>-- Original Message --
>Date: Thu, 30 Oct 2003 11:00:32 -0500
>From: Susan A Wilson <[e-mail]>
>To: Natalie Sierra <[e-mail]>
>Subject: Tyrrell RO
>Natalie - i noticed this RO facility in august and I 'm trying to
>finalize it. i only gave them chlorine monitoring - not limit (can't
>really remember why) . i think Al called me up and said i should put a
>chlorine limit in. but i have a note from Mike Bell (DEH) saying that
>no Cl is used during the process except to the finished water (no
>chlorine discharge) . Have a call into Al - do you have any thoughts on
>this?
8
1 of 1 10/30/03 11:54 AM

Draft Permit Reviews(4)
Subject: Draft Permit Reviews (4)
Date: Mon, 22 Sep 2003 15:16:11 -0400
From: John Giorgino<[e-mail]>
To: Susan A Wilson <[e-mail]>
Hi Susan, I have reviewed the following draft permits:
N00024236 Kinston Regional Water Reclamation Facility
N00020541 Kinston-Peachtree WWTP
NC0086924 Tyrrell County Reverse Osmosis Discharge
NC0086932 Stumpy Point Reverse Osmosis Discharge [Foot notes in section
Al, #4 - months of July and Oct are missing]
Unless noted, I have no comments to the tox sections. Sorry for the delay.
-John
•
I of I 9/22/03 3:30 PM

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0086924, Tyrrell County RO Plant
Facility Information
Applicant/Facility Name: Tyrrell County/Tyrrell Co. RO Plant Discharge WW
Applicant Address: P.O. Box 449, Columbia, NC 27925
Facility Address: 3868 Albemarle Church Rd., Columbia, NC 27925
Permitted Flow 0.216 MGD
Type of Waste: Non domestic; reject water from RO water treatment process
Facility/Permit Status: Renewal
County: Tyrrell
Miscellaneous
Receiving Stream: Bull Bay Regional Office: WaRO
Stream Classification: SB Quad D33NE, Col West
303(d) Listed?: No Permit Writer: S. Wilson ,t#�(,�u
Subbasin: 030153/ Pasq. Date: July 30, 20 Wilson (
Drainage Area (mi2): unknown
Summer 7Q10 (cfs) 0 ,..,
Winter 7Q10 (cfs):
Average Flow (cfs):
IWC (%): 100
Primary SIC Code:
SUMMARY
This permit was first issued March 23, 2001 and expired December 31, 2002. The permittee
applied for renewal of the NPDES permit June 25, 2002 (Standard Form C-RO). Tyrrell County
discharges reject water from its RO plant. The Authorization to Construct for the diffuser
system was issued July 2001. The plant has been discharging since approximately September
2002.
The plant is to be built in phases of 300 gpm production up to 600 gpm production. The reject
water is proposed as 75 gpm up to 150 gpm (0.108 to 0.216 MGD) to be discharged to Bull Bay.
Data was collected from the Castle Hayne aquifer and a predictive model was used to determine
the potential parameters of concern and their concentrations. The permit has a flow limit of
0.216 MGD with specific limits and monitoring requirements for various parameters of concern.
This RO facility has no treatment; most other existing ROs have no treatment. The Division
does have concerns about the ability to consistently achieve limits imposed in the permit
(except for start-up, the facility has met its limits).
During issuance of the proposed permit, Division of Marine Fisheries had detailed concerns
regarding the discharge (instream monitoring, etc.).
TOXICITY TESTING:
Based on the ultimate reject flow of 0.216 MGD and current policy for RO plants, Quarterly
Acute Limit, P/F at 90%, mysid 24 hour testing will be required again.
The facility has performed 3 tests since start-up, all of which have been "pass".
INSTREAM MONITORING:
Intensive instream monitoring is required with this permit for temperature, pH, dissolved
oxygen, and salinity. Since this facility has been discharging less than a year, it is difficult to
assess the impact of the discharge. Instream monitoring will remain as-is in the permit.
Conductivity will be added (this is proposed in accordance with the Division's Assessment and
Recommendations for Water Treatment Plant Permitting).
i`rrrell Co. RO\3"I P
\POF S Rcrtcwal
Page I

PROPOSED CHANGES:
Proposed changes are in accordance with the Division's Assessment and Recommendations for
Water Treatment Plant Permitting.
Metals:
Metals will remain as monthly monitoring. Arsenic, cadmium, copper, cyanide, lead, mercury,
selenium, silver, and zinc were all below detectable for the period of reivew (August 2002 -
June 2003). The permittee will be advised that they may request review of this data after
approximately 12 months of data has been collected (through at least October 2003).
Aluminum, beryllium, chlorides, chromium, nickel, copper, fluoride and iron were above
detectable levels.
Other Parameters
Total nitrogen monitoring will be added (monthly). NH3-N monitoring will be
increased to 2/Month. Values are elevated for this type of discharge.
Although chlorine is not used in the process, total residual chlorine limit/
monitoring will be recommended (with monitoring required if chlorine is used in the
process).
TSS, settleable solids, and turbidity monitoring will be eliminated. Monthly total
dissolved solids monitoring will be required in its place.
Due to the unknown tidal/freshwater inflow conditions acute limits will be given for some
parameters of concern. (This is a continuation from the previous permit).
PROPOSED REQUIREMENTS:
Per the Division's current policy regarding RO discharges, for the wasteflow of 0.216 MGD,
monthly monitoring will be required for all parameters of concern.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: August 20, 2002 (est.)
Permit Scheduled to Issue: October 6, 2003 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please
contact Susan Wilson at [phone] ext. 510.
I"err 11('o. RO V4"fP
NPM)FS Rcncw;d
Page 2

iI16(03 Pel2 kir Ft ./Wa'RO —
To: Permits and Engineering �oogc
Water Quality Section cN fZ Sir F{ZO ,
Attn: Susan Wilson
Date: October 3, 2002
NPDES STAFF REPORT AND RECOMMENDATION
Tyrrell County
Permit No. NC0086924
PART I-GENERAL INFORMATION
1. Facility and Address: ATTN: Mr. J. D. Brickhouse, County Administrator
Tyrrell County Reverse Osmosis Water Treatment Plant
PO Box 449
Columbia, NC 27925
2. Date of Investigation: August 14, 2002
3. Report Prepared By: Ed Warren
4. Person(s) Contacted and Telephone Number(s): Johnny Spencer, Water Department
Head [phone], Dennis Crane, Operator, [phone]
5. Directions to Site:At the intersection of SR 1117 and SR 1200 in Tyrrell County, take
SR 1200 for approximately 0.3 miles, turn north onto a private road and proceed
approximately 0.25 miles to the water plant. The physical address is 3868 Albemarle
Church Road.
6. Discharge Point(s):
Latitude: 35° 56' 16" Longitude: 76° 21' 18"
Attach USGS map extract and indicate treatment facility site and discharge point on
map.
USGS Quad No. USGS Quad Name: Columbia West
7. Site size and expansion area consistent with application?
Yes✓ No_ If"No", explain:
8. Topography (relationship to flood plain included): Site is approximately 20 feet above
MSL.

9. Location of nearest dwelling: The water treatment plant is several hundred feet from
any dwelling. The discharge pipe reaches Bull Bay from the plant by travelling
through the east side of the lot at the 4-H Club Convention Center
10. Receiving stream or affected surface waters: Bull Bay-Pasquotank River Basin
a. Classification: SB
b. River Basin and Subbasin No.: 03-01-53
c. Describe receiving stream features and pertinent downstream uses: full body
contact, fishing and boating
PART II-DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be Permitted: 0.216 MGD
(Ultimate Design Capacity)
b. Current Permitted Capacity: 0.216 MGD
c. Actual Treatment Capacity: 0.216 MGD
(Current Design Capacity)
d. Date(s) and construction allowed by Authorizations to Construct issued in past two
years:
e. Description of existing or substantially constructed wastewater treatment facilities:
There is no treatment of the Reverse Osmosis Water Treatment Plant reject water. It
is discharged straight to Bull Bay with no treatment.
f. Description of proposed wastewater treatment facilities: None
g. Possible toxic impacts to surface waters: Waste will be analyzed during start-up
2. Residuals Handling and Utilization/Disposal Scheme: NA
3. Treatment Plant Classification (attach completed rating sheet): 0 (No treatment)
4. SIC Code(s): 4941
Wastewater Code(s): Primary 22
Main Treatment Unit Code: 000 0
PART III -OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds, or are any public
monies involved (municipals only)?
2. Special monitoring or limitations (including toxicity) requests: The current permit
requires Acute Toxicity, which should be continued.
3. Important SOC, JOC, or Compliance Schedule dates: None

•
PART IV-EVALUATION AND RECOMMENDATION
The ional Office recommends that the permit be renewed.
Signature of Report Preparer
kr-ter '-
�+- Quality Regional Supervisor
/673/ 7,
1
Date

Whole Effluent Toxicity Testing Self-Monitoring Summary July 14,2003 •
FACILITY REQUIREMENT YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC •
Tyrell County(RO)Plant 24hr p/f ac monis 90%mys id(grab) 1999 - - - - - - - - - - - -
N00086924/001 Bcgin:5/1/2001 Frequency Q Jan Apr Jul Oct + NonComp 2000 - - - - - - - - - - - -
County:Tyrell Region:WARO Subbasin:PAS53 2001 - - - - - - - - - N - -
PE:0.216 Special 2002 N - - N - - N - - Pass - -
7Q10:0 IWCI%;100 2003 Pass - - Pass -
Tyson Foods Inc-Harmony Division chr lim:1.8% 1999 5.1 - - >7.2 - - >7.2 - - >7.2 - -
NC1)005126/001 Begirt l ll/I/191`1 Frequency Q Jan Apr Jul Oct + NonComp Single 2000 Pass - - Pass - - Pass - - NR/Pass - -
County:Ircdell Region:MRO Subbasin:YAD06 2001 Pass - - Pass - - Pass - - Pass - -
PF: 0.5 Special 2002 Pass - - Pass - - Pass - - Pass - -
7Q10:43 IWC(%;1.0 2003 Pass - - Pass -
(INC-Chapel 11111 Power Plant 24hr ac monit epis fthd(grab) 1999 Pass - - Pass - - Pass - - Fail 56.1 56.1
NCI111253051001 Begin.9/1/2001 Frequency 5OWD/A NonComp 2000 Fail >100 >100 NR/Fall 74.6 56.1.56.1+ Pass - - Pass - -
County:Orange Region:RRO Subbasin:CPF06 2001 Fail <15 >90 H H H H H H H H H
PE: 0.048 Special 2002 H H H H H - H H -1 H H H
70111:0.0 IWC(%:100 2003 H H H H H
Unimin Corp-Mica Operations(001) chr lim:10% 1999 - Pass - - Late Pass - Pass - - Pass -
NCO1100361/00l Begin3/1/1997 Frequency Q P/F + Feb May Aug Nov + NonComp Single 2000 - Pass - - Pass - - Pass - - Pass -
County:Avery Region:ARO Subbasin:FRB06 2001 - Fail >20(s) 12.25 Pass - - Fall >20 >20 Pass -
PF: 2.16 Special 2002 - late Pass - Pass - - Pass - - Pass -
7Qlll:30 IWC(%:l0 2003 - Pass - - Pass
Unimin Corp. chr lim:11% Y 1999 Pass - - Pass - - Pass - - Pass - -
NC011ll0175/00I Begin3/1/1997 Frequency Q P/F + Jan Apr Jul Oct + NonComp Single 2000 Fail 28.3 >40 Pass - - NR/Pass - - Pass - -
County:Mitchell Region:ARO Subbasin:FRB06 2001 Pass - - Pass - - Pass - - Pass - -
PF: 3.61 Special 2002 Pass - - Pass - - Pass - - Fail >44 >44
7010:45.0 I WCI%;I I 2003 Pass - - Fall <5.5 <5.5
Unimin Corp.Red Hill Plant chr lim:1.2% 1999 Pass - - Pass - - Pass - - Pass - -
NC0085839/(1111 Begin:2/1/1997 Frequency Q P/F + Jan Apr Jul Oct NonComp Single 2000 Pass - - Pass - - Pass - - Pass - -
County:Mitchell Region:ARO Subbasin:FRB06 2001 Pass - - Pass - - Pass - - NR/Pass - -
PE: 11.082 Special 2002 Pass - - Pass - - Pass - - Pass - -
7010:90.7 IWC(',;1.2 2003 Pass - - Pass -
Unimin Corp.-Crystal Operation chr Jim:1.3% 1999 N - - N - - N - - N - -
NC0084620/11111 Begin 5/1/1997 Frequency Q P/F + Jan Apr Jul Oct + NonComp Single 2000 N - - N - - N - - N - -
County:Mitchell Region:ARO Subbasin:FRB06 2001 N - - N - - N - - N - -
PF: 0.36 Special 2002 N - - N - - N - - N - -
7Q10:41 IWC)%:1.3 2003 N - - - -
Union County WWTP#2 chr lim:90% 1999 - Pass - - Pass - - Pass - - Pass -
NC0069841/OOI Begin:4/1/2000 Frequency 0 Feb May Aug Nov + NonComp Single 2000 - Pass - - NR/Pass - - Pass - - Pass -
County:Union Region:MRO Subbasin:YADI4 2001 - Pass - - Pass - - Pass - - Pass -
PF: 1.9 Special 2002 - Pass - - Pass - - Pass - - Pass -
7010:11.11 IWC(%;100 2003 - Pass - - Pass
Union County-Six Mile Creek chr lim:90% 1999 - Pass - - Pass - - H - - H -
NC0066559/001 Begin:12/1/1996 Frequency Q P/F + Feb May Aug Nov NonComp Single 2000 - H - - H - - H - - H -
County:Union Region:MRO Subbasin:CTB38 2001 - H - - H - - H - - H -
PF: 1.0 Special 2002 - H - - H - - H - - H -
7QIO:O.O IWC)%:100 2003 - H - - H
Union County-Twelve Mile Creek WWTP chr Em:90% 1999 - Pass - - Pass - - Pass - - Pass -
NC0085359/001 Begin:l/I/2003 Frequency Q Feb May Aug Nov + NonComp Single 2000 - Pass - - NR/Pass - - Pass - - Pass -
County:Union Region:MRO Subbasin:CTB38 2001 - Pass - - Pass - - Pass - - Puss -
PF: 2.5 Special 2002 - Fail 67.1 >100 Pass - - Pass - - Pass -
7010:0.0 IWC(%;100 2003 - Pass - - Pass
United Chemi-Con chr lira:0.75% 1999 Pass - - Pass - - NR/Pass - - Pass - -
NC0000019/001 Bcgin:4/1/2001 Frequency Q Jan Apr Jul Oct + NonComp Single 2000 Pass - - Pass - - Pass - - Pass - -
County:Ashc Region:WSRO Subbasin:NEWO; 2001 Pass - - Pass - - Pass - - Pass - -
PE: 0.2 Special 2002 pass - - Pass - - Pass - - Pass - -
701(1:41.0 IWC(%;0.75 2003 Pass - - Pass -
F Prc 1999 Data Available
LEGEND:
PERM=Permit Requirement LET=Administrative Letter-Target Frequency=Monitoring frequency:Q-Quarterly;M-Monthly;BM-Bimonthly;SA-Semiannually;A-Annually;OWD-Only when discharging;D-Discontinued monitoring requirement
Begin=First month required 7QI0=Receiving stream low flow criterion(cfs +=quarterly monitoring increases to monthly upon failure or N Months that testing must occur-ex.Jan.Apr.Jul.Oct NonComp=Current Compliance Requirement
PF=Permitted flow(MGD) IWC%=Instream waste concentrati P/F=Pass/Fail test AC=Acute CHR=Chronic
Data Notation:f-Fathead Minnow;0-Ceriodaphnia sp.;my-Mysid shrimp;ChV-Chronic value;P-Mortality of stated percentage at highest concentration;at-Performed by OWQ Aquatic Tox Unit;bt-Bad test
Reporting Notation:---=Data not required;NR-Not reporte Facility Activity Status:1-Inactive.N-Newly Issued(To construct);H-Active but not discharging;+-More data available for month in question;•=ORC signature needed
44

Facility Name= Tyrrell Co.RO WTP Parameter= NH3-N
NPDES#= NC0086924 Standard= 1.0 pg/I
Qw(MGD)= 0.216
7Q10s(cfs)= 0 Date n < Actual Data BDL=1/2DL
IWC(%)= 100.00 Apr-03 l 17.2 17.2
_ 2 16.6 16.6
FINAL RESULTS 3 14.6 14.6
NH3-N 4 17.0 17.0
Max.Pred Cw 45.3 ugh! 5 17.2 17.2
Allowable Cw 1.0 ug/1 6 15.7 15.7 _t
7 0.1 0.1 'C'�
\t-1 ZI
RESULTS A-0
Std Dev. 6.2359
Mean 14.1
C.V. 0.4437
Number
of data points 7
Mult Factor= 2.63
Max.Value 17.2 µg/1
Max.Pred Cw 45.3 µg/1
Allowable Cw 1.0 itg/1

•
Facility Name= Tyrrell Co.RO WTP Parameter= Beryllium
NPDES#= NC0086924 Standard= 6. :1 I µg/1
Qw(MGD)= 0.216 No U1 2.0""c.
IL-
7Q10s(cfs)= 0 Date n < Actual Data BDL=1/2DL `' T 1(Z0
IWC(%)= 100.00 1 < 1.0 0.5
2 < 1.0 0.5
FINAL RESULTS 3 < 1.0 0.5
Beryllium 4 < 1.0 0.5
Max.Pred Cw 2.273 ug/l 5 < 1.0 0.5
Allowable Cw 0.117 ug/1 (e4 K) 6 1.0 1.0
ug/l
RESULTS
Std Dev. 0.2041
Mean 0.6
C.V. 0.3499
Number
of data points 6
Malt Factor= 2.27
Max.Value 1.000 µg/1
Max.Pred Cw 2.273 µg/1
Allowable Cw 0.117 µg/1
Cw(Carcinogen) 0.117 µg/1
Cw(Aquatic Life) 6.500 µg/1
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co. RO WTP Parameter= Chromium
NPDES#= NC0086924 Standard= 20.0 µg/I
Qw(MGD)= 0.216
7Q10s(cfs)= 0 Date n < Actual Data BDL=I/2DL _
IWC(%)= 100.00 1 < 5.0 I 2.5
2 < 5.0 2.5
FINAL RESULTS 3 < 5.0 2.5
Chromium 4 6.0 6.0
Max.Pred Cw 17.4 5 < 5.0 2.5
Allowable Cw 20.0 ug/1 6 < 5.0 2.5
Acute value 1022 ug/1
RESULTS
Std Dev. 1.4289
Mean 3.1
C.V. 0.4634
Number
of data points 6
Molt Factor= 2.90
Max. Value 6.0 µg/I
Max. Pred Cw 17.4 µg/1
Allowable Cw 20.0 µg/I
Data input:S.Wilson(7/03)
DMR data(8/02.4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co.RO WTP Parameter= Copper
NPDES#= NC0086924 Standard= 3.0 µg/1
Qw(MGD)= 0.216
7QIOs(cfs)= 0 Date n < Actual Data BDL=1/2DL
IWC(%n)= 100.00 1 < 10.00 5.00
2 < 10.00 5.00
FINAL RESULTS 3 < 10.00 5.00
Copper 4 < 10.00 5.00
Max.Pred Cw 228.8 µg/1 5 28.00 28.00
Allowable Cw 3.0 µg/1 6 < 10.00 5.00
Acute Value 5.8 µg/1
RESULTS
Std Dev. 9.3897
Mean 8.8
C.V. 1.0630
Number
of data points 6
Mull Factor= 8.17
Max. Value 28.0 µg/1
Max. Pred Cw 228.8 µg/I
Allowable Cw 3.0 nil
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co.RO WTP Parameter= Iron
NPDES#= NC0086924 Standard= no standard, mg/L
Qw(MGD)= 0.216
7QI0s(cfs)= 0 Date n < Actual Data BDL=1/2DL
/WC(%)= 100.00 1 688.0 688.0
2 448.0 448.0
FINAL RESULTS 3 1055.0 1055.0
Iron 4 131.0 131.0
Max.Pred Cw 6250.9 5 186.0 186.0
Allowable Cw Not a POC 6 130.0 130.0
RESULTS
Std Dev. 373.0655
Mean 439.7
C.V. 0.8485
Number
of data points 6
Mult Factor= 5.9
Max.Value 1055.0 µg/1
Max.Pred Cw 6250.9 µg/1
Allowable Cw Not a POC µg/1
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co.RO WTP Parameter= Chloride
NPDES#= NC0086924 Standard= 230.0 mg/L
Qw(MGD)= 0.216
7Q10s(cfs)= 0 Date n < Actual Data BDL=1/2DL
/WC(%)= 100.00 1 7198.0 7198.0
2 7648.0 7648.0
FINAL RESULTS 3 7448.0 7448.0
Chloride 4 7898.0 7898.0
Max. Pred Cw 13325.4 mg/I 5 7154.0 7154.0
Allowable Cw No standard mg/1 6 3849.0 3849.0
0.00
RESULTS
Std Dev. 1504.0431
Mean 6865.8
C.V. 0.2191
Number
of data points 6
Mult Factor= 1.69
Max.Value 7898.0 mg/L
Max.Pred Cw 13325.4 mg/L
Allowable Cw 230.0 mg/L
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co.RO WTP Parameter= Flouride
NPDES#= NC0086924 Standard= no standard µg/1
Qw(MGD)= 0.216
7Q10s(cfs)= 0 Date n < Actual Data BDL=1/2DL
/WC(%)= 100.00 1 4.4 4.4
2 4.4 4.4
FINAL RESULTS 3 4.2 4.2
Flouride 4 4.0 4.0
Max.Pred Cw 12.4 5 4.2 4.2
Allowable Cw Not a POC 6 0.3 0.3
RESULTS
Std Dev. 1.6073
Mean 3.6
C.V. 0.4481
Number
of data points 6
Mult Factor= 2.81
Max.Value 4.4 µg/1
Max.Pred Cw 12.4 µg/1
Allowable Cw Not a POC µg/1
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

Facility Name= Tyrrell Co.RO WTP Parameter= Nickel
NPDES#= NC0086924 Standard= 8.3 Ag/l
Qw(MGD)= 0.216
7Q1 Os(cfs)= 0 Date n < Actual Data BDL=1/2DL
IWC(%)= 100.00 1 11.0 11.0
2 < 10.0 5.0
FINAL RESULTS 3 < 10.0 5.0
Nickel 4 < 10.0 5.0
Max.Pred Cw 28.4 1.1g/1 5 < 10.0 5.0
Allowable Cw 8.3 nil _ 6 < 10.0 5.0
Acute value i 75 µg/1 u Sc"
gcur6
•
RESULTS Yhyµe
Std Dev. 2.4495
Mean 6.0
C.V. 0.4082
•
Number
of data points 6
Molt Factor= 2.58
Max.Value 11.0 Ag/1
Max. Pred Cw 28.4 Agit
Allowable Cw 8.3 Agit
Data input:S.Wilson(7/03)
DMR data(8/02-4/03)
No additional data for August 2002,Sept.2002,February 2002
System started up in August 2002(?)

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0-
All
All air piping for the wastewater treatment plant shall be Schedule 40 st- with iron fittin, or PVC
piping. Valves,unions,and fittings shall be as illustrated on Sheets ' '-2 and WWTP-'. The
floating aerator system shall be designed t• distribute the air into th- 11 length,width,and . -pth of the
aeration chambers and sh. . .ye an effic'-nc -ch that an adeq . e supply of oxygen is mai tained in
the aeration chambe o treat the -we . - oad for w ' the pl. t is designed.
All necessary pi• s, fittings, �
flexi• e cif ectors,and valves t• •nnect the blowers to the air h=.der
-
shall be furnish,d to make the s tem c.' plete. A complete .it ,iffusion system shall be provi.ed
which include• the air headers gas coc 4., 'ons, drop-pipes di' k -rs, valves,pressure rel- . -valves,
and other co ponents to m. - a worka.le .:r diffusion syst: .
The clarifi: shall be fo ed into a sh.i•- w ch promote the settling o solids and collect sett ed solids
for return • the sludge h• ding chambe . The ••ttom are• of the clarifie shall be matched to e
mechanic, rake mech. sm. The clan er outl-t shall be equipped with a•'ustable effluent tro ghs and
shall be i stalled along e complete cl. 'fier dth. Th= clarifiers shall be .esigned to allow •r a
maxim surface load' g of 384 gallon per da per sq . e foot of surface ; -a. The detentio in the
clarifie shall be a mi imum of 5.62 ho at th desi:i flow rate. The clan iers shall be con.tructed to
provide independent f;ed to the clarifiers from - sele'tor tank. Each clarifi.r shall be equip• -d with
control elescoping v. ves as illustrated o Sheet 1P-2 to allow selective s peration from e selector
cham•: .
The sl •ge scrapper s stem and drive mech. 'sm hal be constructed in such . manner as t• be self
suppo i ng and be dri -n with a motor and g;. boic t• adequately scrape the ge erated soli•s.
The slu,ge which settl s in the bottom of each 1 : shall be returned to the . -ration ch. ber,anoxic
1
zone or e sludge hol•'ng chamber for sludge s • -by means of an air lift p ps in the Clarifier
hoppers These air lift ,umps shall be designed t k ontrolled by an air contro valve and:shall be
design- • to allow for co i tinuous or selected sludg= hdrawal. The riser and d's charge pi•es shall be
made of .chedule 40 ste.1. The sludge return troug' s all be fitted with control .ate valve• which allow
selection •f the return loction either to the aeration : ber,anoxic zone,or th: sludge c - ber.
These co trol gates shall • - reached from the gratin. . ,. of the aeration cham•-r.
Skimmer • -vices shall be in• . led in the clarifiers to re o - floating materials . d dischar_e it by
means of. air lift from each kimmer to the mud w= 1. 1 e 'mming devices •I all consist of a
skimming • •-ning and air lift • p.
Two (2)blo ers shall be furnishe• or use for clarifie air 1 ' and s': er opera ion, and • 1st aeration.
Each blower • all be capable of deli• -ring 150 cubic eet p- minute o free air easured at e diffuser
air header at 6 •si maximum when ope ition at a m. mums,-- • of 1,7 I RPM Blowers • all be of
the positive dis• acement type with V be onnectio to the in,‘tors. Each . ow, shall be e i uipped
with an intake an, exhaust silencer. Aeration - = •- provided • running o - ei the blowe ;while the
second blower sh: be a reserve blower. The controls for the blo -rs will run • •e blower a any given
time and shall rotat. through the blowers at each time clock change i- operatio .
7

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ptifid,A-r t994- 7i(237o I
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55 0. I (a. a (Mon-r-Poi) 1,.r:
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Ar co e5/�' Po = ZZ t Fe C� a/wx, .. .-,,.7.-_-' :.
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55. f7 . I I�ZH`h 1U eN 77-4--`1) ,.' ,- f
rGree. 40.tt� ' ''''''''''v-I''''''':,;46:.:''''''';:.:': .
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I

Each blower shall .- driven by a 7 . ' ', 1, •0 RPM . . : e,460 v. •o : ontal ball bearing electric
motor with an o.-n drip-proo nclosure. The .. . ors shall be mounted on . . .justable sliding base
and shall have : 1 0 o -rv' e factor but shal of .- over-loaded beyond the n.,. -plate rating at the
design condi• ons as . . ed above. H. • i-Off-• utomatic switches shall be pr, •ded for each blower.
For each • ower . otor,therma mat. etic circuit b -akers shall be installed. Thes• Al serve both as a
disconn: t swi h and over-curre .rotection again.t short circuits or grounds at t'e otor branch
circuit .nd tors,control equip e t and motors. 'hase protection shall also be p .vi• • •. Magnetic
across- e- ne starters with the' al o erload protec ion shall be supplied to operate and protect the
moto - 24 hours, 7 day a -ek time lock shall , - capable of being programme. to control the
aerato . d blower run times : d to adjus the start .et points and the aerator and bl a wer run times. Each
aerate , and blower shall be :quipped with ., elaps:d time meter to record the total ours of run time for
i
each ,lower.
All : ectrical control equ••ment shall be moun -, in a separate NEMA IV enclos e which is UL listed
and :pproved. The pane shall be fabricated-of berglass and shall be provided ,•th a rigid door with a
loc ng hasp. All motor controls and switche s :11 be clearly identified as to - specific equipment
bei • controlled and all nternal wiring shall .- f. tory installed in accordance - 'th the North Carolina
El:.k 'cal Codes. All c.ntrol voltage shall .- 120 olts, single phase and the -cessary transformer shall
be p ovided to allow fo this service.
e : tewater treatme i t plant shal e on- .f the -xisting treatment plan . as . sludge holding
c am.-r as illustrated o Sheet ' '-1 : d '-3. This treatment p . t sha provide a volume of
115,001 _allons and shal allo for the : orage of. cumulated sludge. 'e cham.: shall contain a
: Sable : lift pump for 1,.. sferring .f de . . •a id from the chambers o the eq . ization chamber.
I e existing . . a t . • • -rs hall m.• .in an Klee a .to •is : ved oxyge level in the hamber and to keep
e chamber contents compl: -
trif
xed.
e wastewater treatme plant . l be equi a .-d with a tertiary it r unit as illus :ted on sheets
W '-2 and WWTP . This u.S hall c. sist of a clearwell, f. . filters, a mud ell chamber,
dis nfection chamber, a flow me i-r stilling well and weir,two systems and a .est aeration chamber.
Th•se facilities sha . be installed,o provide complete filtratio : d disinfection .f the wastewater.
The filter unit sys r-m shall consist •f four(4) filters,ea • • ing a surface ..ea of 60.75 square feet and
eac being capabl of treating 1.00 g. ons per min at . e fourth of 351,000 gpd. Each cell shall
con .'n an air sco 'ng manifold and a un. - •rain for .11ection of filte -d water. Each filter shall be
equip.-d with nine 'nches of sand with an effective 'ze of 1.2 mm . • a uniformity coefficient of less
than 1 •5 mm. Twe e inches of anthracite shall :- provided over e sand in each filter with an
effecti - size of 1.08 .. . The sand and an cite for the filter . all meet the required standards
establish-d by the Divisio• of Water Qua ' for tertiary flute• . All sand source shall be approved by the
DWQ an. e Contractor sh. .rovi• - e Engineer wi • letter which states that the filter media
complies wi• the DWQ stan. : :.• • e . a ': e media is approved in accordance with these
standards.
8

Tyrrell County Board of Commissioners
P.O. Box 449
Columbia, North Carolina 27925
Telephone [phone]
Thomas W.Spruill, Chairman ��C4 ti Carl Willis
Florence E.Bryant,Vice Chairman __ �, Zacharias(Zach) Bridchouse
Nina B.Griswell !,•��+ Connie Hopkins, Clerk
11
June 18, 2002
Mrs. Valery Stephens ';
NCDENR
Division of Water Quality (i
1617 Mail Service Center 1 • 2 5 2002
Raleigh, NC 27699-1617
DENR - WATFR apt ITy
RE: NPDES Permit Renewal POINT SOL:,;CE g;;A.„L4
Tyrrell County RO
Permit #: NC0086924
Dear Mrs. Stephens,
Tyrrell County wishes to designate Hobbs, Upchurch & Associates, P.A. as the
Authorized Representative for the above referenced renewal.
Please let me know if further information is needed.
Sin e - ,
0,
s
D. Brickhouse
County Administrator
Cc: Ed Lawler, Hobbs, Upchurch& Associates, P.A.

•
Hobbs, Upchurch & Associates, P.A.
Fl Consulting Engineers
la2522 S.Croatan Highway • Suite 2A • P.O. Drawer 1929 • Nags Head, North Carolina 27959
June 18, 2002
Mrs. Valery Stephens
NCDENR
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Permit Renewal:
Tyrrell County RO NC0086924
HUA Project # DR0202
Dear Mrs. Stephens,
Attached please find the NPDES permit renewal application for the Tyrrell County RO
WTP. It expires 12/31/02. The Tyrrell County facility is slated for completion in the
summer of 2002 and therefore has not completed the wastewater characteristics sheet
required on the C-RO application. If you have any questions or need further information
please call me.
Thank you for your assistance in the application review.
Sincerely,
Hobbs, Upchurch& Associates, P.A.
Ed Lawler
Nags Head, NC • Telephone [phone] • Fax [phone] • e-mail: [e-mail]
Southern Pines • Myrtle Beach • Raleigh • Charlotte

' NPDES Application Form — Standard Form C-RO
Reverse Osmosis and other advanced water-treatment facilities
N. C.Department of Environment and Natural Resources
Division of Water Quality/NPDES Unit
1617 Mail Service Center,Raleigh,NC 27699-1617
SECTION I. APPLICATION AND FACILITY DESCRIPTION
Unless otherwise specified on this form al Items are to be completed.II an Rem Is not applicable tdcate'NA.
North Carolina NPDES Permit Number NC0002 (if known)
1. Applicant and facility producing discharge
This applies to the person,agency,firm,municipality,or any other entity that owns or is responsible for the permitted facility. This may
or may not be the same name as the facility or activity producing the discharge. Enter the name of the applicant as it is officially or
legally referred to;do not use colloquial names as a substitute for the official name.
Name 'TygRvi 7 marry
Mailing address of applicant:
Street address 108')South Water St.
City Columbia • County Tyrrell
State NC Zip Code 27925
Telephone Number (252 )7%-1 '171 Fax Number( 252 ) 796-1188 •
e-mail address
2. Mailing address of applicant's Authorized Agent/Representative:
Complete this section if an outside consulting firm/engineering firm will act on behalf of the applicant/permittee
Hobbs,Upchurch & Assoc.,P.A.
Street address PODrawer 1979
City Nags Head County Dare
State NC Zip Code 27959
Telephone Number ( 252 ) Til-3913 Fax Number( 252 ) 441-2100
e-mail address [e-mail]
3. Facility Location:
Street address 3868 Albemarle Church Rd
City Coji.wibi a County Tyrrel 1
State NC Zip Code 27925
Telephone Number ( 252 ) 797-4049 Fax Number( . )
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 is true,complete,and accurate.
Johnny Spencer Ddpt Head-Water
Pitted Marne dPerson signlnp
Title
Dare npplicalian shred
North Carolina General Statue 143-215.8B(i)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 of 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.)
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NPDES Application Form - Standard Form C-RO
Reverse Osmosis and other advanced water-treatment facilities
SECTION II. BASIC DISCHARGE DESCRIPTION
Complete this section for each discharge from the facility to surface waters.
SEPARATE DESCRIPTIONS OF EACH DISCHARGE ARE REQUIRED EVEN IF SEVERAL DISCHARGES ORIGINATE IN THE SAME FACILITY.
M values for an existing cischarge should be representative of the twelve previous months of operation. If this is a proposed discharge,values should
reflect best engineering estimates.
1. Outfall Number 1 and Type RO Reject
Give the nature of the discharge(reject water,regeneration water,filter backwash,etc.)
2. Discharge To End Date:
If the discharge Is scheduled to be discontinued within the next 5 years,give the date(or best estimate)the discharge will end.
3. Discharge Receiving Stream Name: - - . . . • . ' - _ -
Give the name of the waterway(at the point of discharge)by which It is usually designated on published maps of the area. If the discharge is to
an unnamed tributary,so state and give the name of the first body of water fed by that tributary which is named on the map,e.g.,UT to McIntire
Creek, where McIntire Creek is the first water way that is named on the map and Is reached by the discharge.
4. Discharge Type and Occurrence
a. Check whether the discharge is continuous or Intermittent. If the discharge Is intermittent describe the frequency of discharge
0 Continuous ® Intermittent Fequency: 8-12 Hrs/Day
b. Enter the average number of days per week(during periods of discharge)this discharge occurs.
7 days per week
5. Water Treatment Additives
Complete the table below if flow from this outfall contains wader treatment additives..Include any additives that have the potential to be
present in the discharge. For example:if finished product welter is used for regeneration(or if chlorine&fluoride are added to finish or product
water)chlorine&fluoride should be reported.
Additive Manufacturer Quantity Chemical Composition
(pounds added per million (active ingredient(s))
gallons of water treated)
Sul furl Acid VOPAC 5mgJ1 H2S0Yi
Scale Tnhihitor HPrrnlPs Tnr 6 mg/1 Synthetic Polymer
•
2 of 4

NPDES Application Form - Standard Form C-RO
Reverse Osmosis and other advanced water-treatment facilities
OUTFALL NUMBER
6. Wastewater Characteristics
Check the box beside each constituent present in the effluent(discharge water).
This detemiinffiion is to be based on actual analytical data(minimum of one sample obtained within one year of submittal of this application).
Parameter Present Parameter Present
Total Residual Chorine 50060 Copper 01042
Ammonia 00610 Iron 01045
Organic nitrogen 00605 Lead 01051
Nitrate 00620 Magnesium 00927
Nitrite 00615 Manganese 01055
Phosphorus 00665 Mercury 71900
Sulfate 00945 Molybdenum 01062
Sulfide 00745 Nickel 01067
Sulfite 00740 Selenium 01147
Bromide • 71870 ' Silver 01077
Chloride 00940 Potassium 00937
Cyanide 00720 Sodium 00929
Fluoride 00951 Thallium 01059
Aluminum 01105 Titanium 01152
Antimony 01097 Tin 01102
Arsenic 01002 ... Zinc 01092
Beryllium 01012 Algicides 74051
Barium 01007 Chlorinated organic compounds 74052
Boron 01022 Pesticides 74053
Cadmium 01027 Fecal coliform 74055
Calcium 00916 Phenols 32730
Cobalt 01037 Surfactants 38260
Chromium 01034 Radioactivity 74050
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NPDES Application Form - Standard Form C-RO
Reverse Osmosis and other advanced water-treatment facilities
7. Supplemental Documentation
Submit the following information appended at the end of this application form. All sheets should be approximately letter size with
margins suitable for filing and binding. All pages should include facility location and permit number(if available).
U Present Operating Status: Provide a narrative description of installed water and wastewater treatment
components at the facility. Include sizes&capacities for each component.
U Potential Facility Changes: Provide a narrative description of any planned upgrades/expansions/
repairs planned for the facility during the next five years. Do not include tasks associated with routine
operation &maintenance.
U Schematic of wastewater flow: Provide.a line drawing of water and wastewater flow through the facility.
The schematic should show flow volumes at all points in the treatment process. Specific treatment
components should be identified.
U Location map:.Submit a map showing the location of each outfall. The usual meridian arrow showing
north as well as the map scale must be shown. On all maps of rivers,the direction of the current is to be
indicted by an arrow. All outfalls should be identified with the outfall number(s) used in Section II of this
application. A copy of the relevant portion of a USGS topographic map is preferred.
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4 of 4

TYRRELL COUNTY REVERSE OSMOSIS
NPDES#NC0086924
PROCESS DESCRIPTION
The Tyrrell County Reverse Osmosis Water Treatment Plant currently is under
construction and is scheduled for start-up in the summer of 2002 with a permitted
discharge of 216,000 gallons per day. The facility is designed to provide additional
potable water for the Tyrrell County Water System(See attached location maps). The
source water will come from two wells that tap a deep aquifer consisting of brackish
water. The feedwater(405 gpm), as it is processed, will be separated into two streams,
the concentrate stream(75gpm) and the permeate stream(300gpm). The former carries
the elements removed from the feedwater to the discharge point in Bulls Bay located
within Subbasin 30155. (See attached process schematic)There is also an anticipated
blend flow(30 gpm)that is added to the permeate flow which then receives further
treatment to meet clean water standards and is then pumped to distribution/storage. The
initial concentrate flow is projected to be at the rate of 108,000 gallons per day based on a
80%permeate recovery from the well flow. The plan and profile for the discharge line
and diffuser assembly are attached.

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Concentrate 75 gpm
TDS 14770 mg/L
1
Well Feedwater 405gpm Pretreatment RO System
TDS 3015mg/L Scale inhibitor,acid
Blend 30 gpm
TDS 3015 mg/L
Permeate 300 gpm
4Treated Water to Storage Post-Treatment v TDS 64 mg/1
330 gpm Chlorine,fluoride,
TDS 332 mg/L NaOH,Cor.Inhib.
•
TYRRELL CO RO WTP- PROCESS SCHEMATIC
NPDES#NC0086924

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VICINITY AND LOCATION MAP ,4'','''�"mm"aPM',,i
TYRRELL CO. WATER SYSTEM IMPROVEMENTS FIGURE 1
R.O. PLANT CONCENTRATE DISCHARGE
HOBBS,, UPCHURCH&ASSOCIATES, P.A. SCALE: DESIGNED: ETW
itill CONSULTING EI4GGEERS 1 "=600' DRAWN: DCJ
NACS1E4,t0R771CAROLNA 27959 DATE: CHECKED: ETW
2522 5 CPY)ATANHWY,SITE 24 MAY 2000
252-441-3913 FAX [phone]X SHEET: 1 0 F 4

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(CONTRACT III BY OTHERS)
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BEGIN 125' 4" HDPE to♦iVII4-0
DIRECTIONAL BORE _-"
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REMOVE EX. 4" PLUG
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NEW 125LF HDPE
4)IRECTIONAL BORE PPE
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0 +00 1 +00 2 + 00
PROFILE
TYRRELL CO. WATER SYSTEM IMPROVEMENTS FIGURE 2
R.O. PLANT CONCENTRATE DISCHARGE
HOBB5, UPCHURCH&ASSOCIATES, P.A. SCALE: 1 ,._50' (H) DESIGNED: ETW
- pillCONSLCTAtG INGREERS 1 "=5' (v) DRAWN: DCJ
NAGS HE4D,NORTH CAROIJVA 27959 DATE: CHECKED: ETW
2522 S CROATANHe,,SWE2A MAY 2000
252-44F3913 FAX [phone] SHEET: 2 0 F 4

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BORE PIPE
'(4 TOTAL) CHECK VALVES PLAN 3 1
2"X 1/4" S.S. STRAP W/
6"X3/4" S.S. ANCHOR BOLTS, 1
WASHERS & NUTS i 112" HOPE DIFFUSER
NOTE
/ MANIFOLD
PROVIDE NEOPRENE PADS BETWEEN S.S. STRAPS AND HOPE PIPE 15• TIP ',It/41-111011V"—
AND BETWEEN CONCRETE ANCHOR AND HDPE PIPE. L• -*.t.--
4" HDPE DIRECTIONAL _I4r I
BORE PIPE
A SECTION A-A
4" 30' HDPE ' `—
MITTERED ELL HDPE END CAP N
30i-- • ., II `, ', '' ° '`'_Ik
4" HDPE DIRECTIONAL A 18- .A,1. IL 4'.,
BORE PIPE /1 I ` ''
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EXISTING GRADE
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S/29°D 4" DISCHARGE HEADER DETAIL
TYRRELL CO. WATER SYSTEM IMPROVEMENTS FIGURE 3
R.O. PLANT CONCENTRATE DISCHARGE
HOBBS UPCHURCH&ASSOCIATES, P.A. SCALE: DESIGNED: ETW
CONSGE 1 /2 1 '-0" DRAWN: DCJ
NAG'1-EAD,,M97H CARCOVA 27959 DATE: CHECKED: ETW
25225 CROATANHW7 SWF24 MAY 2000 SHEET: 3 OF 4
252-441-? FAX [phone]