NC0064246_Permit Issuance_20000605

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
June 5, 2000
Mr. Jerry Pace
Pace Mobile Home Park
13356 Buffalo Rd.
Clayton, North Carolina 27520
e
IL
NC ENR
Subject: NPDES Permit Issuance
Permit No. NCO064246
Pace Mobile Home Park
Johnston County
Dear Mr. Pace:
Division personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. 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 (or as subsequently amended).
Again, please be reminded that this facility's discharge is located in the Neuse River
Basin, in which all streams have been designated as nutrient sensitive waters (NSW) as a result
of algal bloom problems in the estuary. The North Carolina Environmental Management
Commission recently adopted rules establishing the Neuse River Basin Nutrient Sensitive
Waters Management Strategy for the reduction of phosphorus and nitrogen inputs. The point
source rule (15A NCAC 2B .0234) is intended to reduce total nitrogen (TN) discharges by 30%
by 2003. It specifies that individually permitted wastewater discharges to the Neuse River
Basin with permitted flows less than 0.5 MGD in 1995 shall be allocated a collective annual
mass load of 155,400 pounds/year of total nitrogen. This is equivalent to an allocation in the
,range of 5 - 10 mg/1 TN for each small discharger. Although no total nitrogen limits appear
in the permit at this time, you may be subject to nitrogen limits in the next permitting
cycle. All facilities with permitted flow greater than or equal to 0.5 MGD are receiving a TN
limit in this permit cycle.
The Division recommends that you evaluate the cost of installation for nutrient removal
facilities in the event that a nutrient limit is imposed on your plant. It is also recommended
that alternative discharge options be evaluated such as such as spray irrigation, subsurface
systems, wastewater reuse, or connection to a larger regional system.
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 (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-161 7 - TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/ 10% POST -CONSUMER PAPER
VISIT US ON THE INTERNET C@ http://h2o.enr.state.nc.us/NPDES

Permit Number: NCO064246
Please note that this permit is not transferable except after notice to the Division. The
Division may require modification or revocation and reissuance of the permit. This permit
does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources, the Coastal
Area Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Michael Myers at
telephone number [phone], extension 508.
Sincerely,
ORIGINAL SIGNED BY
BILL REID
Kerr T. Stevens
cc: Central Files
Raleigh Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
Technical Assistance & Certification Unit

Permit Number: NCO064246
4-
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and
the Federal Water Pollution Control Act, as amended,
Mr. Jerry Pace
is hereby authorized to discharge wastewater from a facility located at
Pace Mobile Home Park
on NCSR 1003
north of Archers Lodge
Johnston County
to receiving waters designated as unnamed tributary to Buffaloe Creek in the Neuse River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III and IV hereof.
This permit shall become effective June 5, 2000.
This permit and authorization to discharge shall expire at midnight on April 30, 2003.
Signed this day June 5, 2000.
ORIGINAL SIGNED gY
BILL REID
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit Number: NCO064246
SUPPLEMENT TO PERMIT COVER SHEET
Mr. Jerry Pace
is hereby authorized to:
1. Continue operation of an existing 0.15 MGD wastewater treatment system, consisting of the
treatment units listed below and located at the Pace Mobile Home Park, on NCSR 1003, north of
Archers Lodge, Johnston County, and;
2. Discharge treated domestic wastewater from said treatment works at the location specified on the
attached map through outfall 001 into an unnamed tributary to Buffaloe Creek which is classified C —
NSW waters in the Neuse River Basin.
Wastewater Treatment system units:
• Bar screen
• Surge tank
• Aeration chamber
• Clarifier
• Aerated sludge holding tank
• Chlorination
Ze6
r vt qZV5 e.d ei' r

41
Permit Number: NCO064246
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 treated domestic wastewater from outfall(s) 001. Such
discharges shall be limited and monitored by the Permittee as specified below:
Effluent Characteristics
Limits
Monitoring Requirements
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Locationl
Flow
0.015 MGD
Continuous
Recording
I or E
BOD, 5-day, 20°C
9.0 m
13.5 m /L
Weekly
Grab"
E
Total Suspended Residue
30.0 m /L
45.0 m /L
Weekly
Grab
E
NH3-N (summer)2
2.0 m
Weekly
Grab
E
NH3-N (winter)2
4.0 m /L
Weekly
Grab .
E
Dissolved Oxygen3
Weekly
Grab
E
Fecal Coliform4
200/100 ml
400/100 ml
Weekly
Grab
E
Temperature
Weekly
Grab
E
PH5
Weekly
Grab
E
Total Residual Chlorine
2/Week
Grab
E
Total Nitrogen6
No Effluent Limit m L
Monthly
Grab'
E
No Effluent Limit Ib/Mo
Monthly
Calculated
E
No Effluent Limit lb/ r
Annually
Calculated
E
Total Phos horus7
No Effluent Limit6
Monthly
Grab
E
Dissolved Oxygen
Weekly
Grab
U, D
Temperature
Weekly
Grab
U, D
Footnotes:
1. Sample Location: E - Effluent, I - Influent, U - Upstream at least 100 feet from the outfall, D -
Downstream at least 300 feet from outfall 001.
2. Summer is defined as the period from April 1 through October 31, while winter is defined as November 1
through March 31.
3. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/l:
4. Fecal Coliform shall be calculated using the geometric mean, according to the procedure detailed in
Part II. Section A, Paragraph 9b.
5. The pH of the effluent shall not be less than 6.0 nor greater than 9.0 (on the standard units scale).
6. See Special Condition A.(2), Total Nitrogen Monitoring.
7. The quarterly average for total phosphorus shall be the average of grab samples collected *monthly
during the calendar quarter (January -March, April -June, July -September, October -December).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Definitions:
MGD - Million gallons per day
mg/L - Milligram per liter
µg/L - Microgram per liter
lb/yr - Pounds per year
BOD - Biochemical oxygen demand
ml - Milliliter
lb/Mo - Pounds per month

Permit Number: NC0064246
A. (2.) TOTAL NITROGEN MONITORING
The Pcrmittee shall calculate the annual mass loading of total nitrogen as the sum of monthly loadings, according to
the following equations:
(1) Monthly Mass Loading (lb/mo) = TN x Q x 8.34
where:
TN = the average total nitrogen concentration (mg/L) of the grab samples collected during the
month
Q = the total wastewater flow discharged during the month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(2) Annual Mass Loading (lb/yr) = E (Monthly Mass Loadings) for the calendar year
The Permittee shall report the total nitrogen concentration for each sample and the monthly mass
loading in the appropriate self -monitoring report and the annual mass loading of total nitrogen in
the December self -monitoring report for the year.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO064246
Facility Information
Applicant/Facility Name:
Mr. Jerry Pace - Pace Mobile Home Park
Applicant Address:
13356 Buffaloe Rd.
Facility Address:
15026 Buffaloe Rd, Clayton, NC 27520
Permitted Flow
0.015 MGD
Type of Waste:
Domestic
Facility/Permit Status:
Renewal
County:
Johnston
Miscellaneous
Receiving Stream:
UT to Buffaloe
Creek
Regional Office:
Raleigh
Stream Classification:
C-NSW
USGS Topo Quad:
E 25 NW
303(d) Listed?:
Yes
Permit Writer:
Michael Myers
Subbasin:
03-04-06
Date:
March 14, 2000
Drainage Area (mi2):
0.19 mi2
Summer 7Q 10 (cfs)
0
Winter 7Q10 (cfs):
0
Average Flow (cfs):
0.21 cfs
]WC (%):
100%
Primary SIC Code:
6515
SUMMARY
Mr. Jerry Pace of Pace Mobile Home Park owns and operates a 0.015-MGD class II domestic
wastewater treatment plant serving approximately 45 homes. The treatment system consist of
the following treatment units:
• Manual bar screen
• Equalization basin
• Dual aeration chamber
• Dual clarifiers
• Aerated sludge holding chamber
• Dual air blowers
• Tablet chlorinator
Treated wastewater is discharged through one outfall into an unnamed tributary to Buffaloe
Creek, which is a class C-NSW water in subbasin 03-04-06 in the Neuse River Basin.
The yearly average flows from the facility from 1996 through 1999 are respectively, 0.008,
0.0095, 0.0228, and 0.0124 MGD. This represents 53.3%, 63.3%, 1520/u, and 82.7% of the
permitted flow for the facility.
The permit was last renewed April 15, 1994. There has been one permit modification
issued October 8, 1997. The facility is currently permitted as follows:
Parameter
Monthly Average
Daily Maximum
Flow
0.015 MGD
BOD
9.0 m /L
13.5 m /L
TSS
30.0 m /L
45.0 m /L
NH3
4.0 m /L
DO
6.0 m /L
Fecal coliform
200/ 100 ml
400/ 100 ml
TRC
Monitor
TN
Monitor
Fact Shcct
NPDES Renewal
llal"e I

TP
Monitor
Temperature
Monitor
pH
-
6-9
Conductivity
Monitor
Proposed Limitations and Monitoring requirements:
Parameter
Monthly Average
Daily Maximum
Flow
0.015 MGD
BOD
9.0 m /L
13.5 m /L
TSS
30.0 m /L
45.0 m /L
NH3
4.0 m /L
DO
5.0 m /L
Fecal coliform
200/ 100 ml
400/ 100 ml
TRC
Monitor
TN
Monitor
TP
Monitor
Temperature
Monitor
H
6-9
TOXICITY TESTING:
Current Requirement: None - Ammonia limit
Recommended Requirement: None - Ammonia limit
COMPLIANCE SUMMARY:
September '96 NOV issued for July '96 violation of ammonia limit.
October '96 - NOV issued for August '96 violation of ammonia limit.
December '96 - NOV issued for September violation of BOD and TSS limit.
February '97 - NOV and recommendation for enforcement issued for ammonia, BOD, TSS,
fecal, DO, violations over the time period of November '95 through October '96.
March 3, '97 - NOV issued for December '96 violation of BOD limit.
March 2497 - NOV issued for January '97 violation of BOD limit.
May 16 '97 - NOV issued for February '97 violation of ammonia limit.
May 20 '97 - NOV issued for March '97 violation of ammonia limit.
July 28, '97 - NOV issued for May '97 violation of ammonia limit.
August 11, '97 - NOV issued for June '97 violation of ammonia limit.
September 3, '97 - NOV issued for July '97 violation of ammonia limit.
September 29 '97 - NOV issued in response to a Compliance Inspection Evaluation conducted
September 22, '97.
December 12, '97 - Recommendation for enforcement issued.
April 13, '98 - NOV issued for February '98 violation of ammonia limit.
March 9, '98 - NOV issued for January '98 violation of ammonia limit.
June 1, '98 - Assessment of Civil Penalties issued for $5,153.73.
October '98 - NOV issued in response to a Compliance Inspection Evaluation conducted
October 7, '98.
INSTREAM MONITORING:
Currently the facility monitors DO, fecal coliform, temperature, and Conductivity both
upstream and downstream of the discharge location.
It is recommended that conductivity and fecal coliform monitoring be removed as a condition
for the permit according to the Division's in -stream monitoring policy.
PROPOSED CHANGES:
Removal of in -stream conductivity and fecal coliform monitoring.
I"act Shcet
NI'D S Renmal

Ammonia limit changed to 2.0 mg/L summer and 4.0 mg/L winter according to the Division's
Zero Flow Policy.
Monitor TP and TN according to the Division's Nutrient Management Strategy.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: April 5, 2000
Permit Scheduled to Issue: May 23, 2000
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Michael
Myers at [phone] ext. 508.
NPDES SUPERVISOR:
Fart Shed
NPI) S Renewal
l''il,,e

REGIONAL OFFICE COMMENT:
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EPA REGION Iy COMMENT:
NAME: DATE:
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PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT
COMMISSION/NPOES UNIT
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE
A NPDES WASTEWATER PERMIT
On the basis of thorough staff review and
application of NC General Statute 143.21,
Public law 92-500 and other lawful standards
and regulations, the North Carolina Environ-
mental Management Commission proposes
to issue a National Pollutant Discharge
Elimination System (NPDES) wastewater
discharge permit to the person(s) listed on
the attached pages effective 45 days from
the publish date of this notice.
Written comments regarding the Pro-
posed permit will be accepted until 30 days
after the publish date of this notice. All
comments received prior to that date are
considered in the final determinations
regarding the proposed permit. The Director
of the NC Division of Water Quality may
decide to hold a public meeting for the
proposed permit should the Division receive
a significant degree of public Interest.
Copies of the draft permit and other
supporting Information on file used to
determine conditions present In the draft
permit are available upon request and
payment of the costs of reproduction. Mail
comments and/or requests for information to
the NC Division of Water Quality at the
above address or call Ms. Christie Jackson
at [phone], extension 538. Please
Include the NPDES permit number (at-
tached) in any communication. Interested
persons may also visit the Division of Water
Quality at 512 N. Salisbury Street, Raleigh,
NC 27604-1148 between the hours of 8:00
am and 5:00 pm to review the information on
file.
NPDES Permit Number NC0064246, Pace
Mobile Home Park, 13356 Buffalo Road,
Clayton, NC 27520 has applied for a permit
renewal for a facility located in Johnston
County discharging treated wastewater Into
Unnamed Tributary to Buftaloe Creek in the
Neuse River Basin. Currently BOO, ammo-
nia, dissolved oxygen, and fecal coliforms
are water quality limited. This discharge may
affect future allocations in this portion of the
receiving stream.
March 31
NORTH CAROUNA
JOHNSTON COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County
and State, duty commissioned, qualified, and authorized
by law to administer oaths, personally appeared
who being
first duly sworn, deposes and says: that he (she) is
( r employee
authorized to make this affidavit)
of THE SMMMELD HERALD, a newspaper published,
issued, and entered as second class mail in the City of
Smithfield in said County and State; that he (she) is
authorized to make this affidavit and sworn statement;
that the notice or other legal advertisement, a true copy
of which is attached hereto, was published in The
Smithfield Herald on the following dates:
and that the said newspaper in which such notice,
paper, document, or legal advertisement was published
was, at the time of each and every such publication,
a newspaper meeting all of the requirements and
qualifications of Section 1-597 of the General Statues
of North Carolina and was a qualified newspaper within
the meaning of Section 1-597 of the General Statutes of
North Carolina.
This-3/.a/ day off , 20"
(slgna,m, of person making affidavit) �L
Sworn to and subscribed before me, this
Public

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
MEMORANDUM
4
� k AIIIIIIIIIIIIIIIIIIIIII EL
NCDENR
NORTH C:AROLINA DEPA�RTME T OF
ENVIRONMENT AND N�akAL Res URGES
March 28, 2000
To: Kirk Stafford
NC DENR / DWQ / Regional Environmental Chemist
Winston-Salem Regional Office
From: Michael J. Myers
NPDES Unit
Subject: Review of Draft NPDES Permit NCO064246
Pace Mobile Home Park
Johnston County
i
ce)
Attached is a copy of the draft NPDES permit for the above referenced facility for your review and
comment. Please provide your comments in the spaced provided on the fact sheet and return by May
5, 2000.. If you have any questions or would like to give me your comments directly please contact me
at 919-733-5083 x508 or by email at Mike.Myers®ncmail.net. Thank you for your time.
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 -TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - SO% RECYCLED/ 10% POST -CONSUMER PAPER
VISIT US ON THE INTERNET 9 http://h2o.enr.state.nc.us/NPDES

Notes for Pace Mobile Home Park
General Information /
Mr. Jerry Pace of Pace Mobile Home Park owns and operates a 0.015-MGD class II
domestic wastewater treatment plant serving approximately 45 homes. The treatment
system consist of the following treatment units:
• Manual bar screen
• Equalization basin
• Dual aeration chamber
• Dual clarifiers
• Aerated sludge holding chamber
• Dual air blowers
• Tablet chlorinator
Treated wastewater is discharged through one outfall into an unnamed tributary to
Buffaloe Creek, which is a class C-NSW water in subbasin 03-04-06 in the Neuse River
Basin.
The yearly average flows from the facility from 1996 through 1999 are respectively,
0.008, 0.0095, 0.0228, and 0.0124 MGD. This represents 53.3%, 63.3%, 152%, and
82.7% of the permitted flow for the facility.
Permit Writer: MJM
Permit #: NC0064246
Permit Review
The permit was last renewed April 15, 1994. There has been one permit modification
issued October 8, 1997. The facility is currently permitted as follows:
Parameter
Monthly Average
Daily Maximum
Flow
0.015 MGD
BOD
9.0m
13.5m
TSS
30.0 m
45.0 m
NH3
4.0 m /L
DO
6.0 m
Fecal coliform
200/100 ml
400/100 nil
TRC
Monitor
TN
Monitor
TP
Monitor
Temperature
Monitor
H
6-9
Conductivity
Monitor
Proposed Limitations and Monitoring requirements:

Parameter
Monthly Average
Daily Maximum
Flow
0.015 MGD
BOD
9.0 m /L
13.5 m /L
TSS
30.0 m /L
45.0 m /L
NH3
4.0 m L
DO
5.0 m
Fecal coliform
200/100 ml
400/100 ml
TRC
Monitor
TN
Monitor
TP
Monitor
Temperature
Monitor
H
6-9
Permit File Review
Discharge Point: Lat: 35' 42' 33" Long: 78' 22' 55"
Quad:E25NW — Clayton
Receiving Stream: UT to Buffaloe Creek
Classification: C-NSW
Subbasin: 03-04-06
SIC: 6515
Discharge Code:08
MTU: 030-7
ATC issued 12/30/86.
Wasteload Allocation File Review
DA = 0.19 mi2
Qavg = 0.21 cfs
s7Q10=0
w7Q10=0
30Q2 = 0
IWC = 100%
Correspondence File Review
September '96 NOV issued for July '96 violation of ammonia limit.
October '96 — NOV issued for August '96 violation of ammonia limit.
December '96 — NOV issued for September violation of BOD and TSS limit.
February '97 — NOV and recommendation for enforcement issued for ammonia, BOD,
TSS, fecal, DO, violations over the time period of November '95 through October '96.
March 3, '97 — NOV issued for December '96 violation of BOD limit.
March 24 '97 — NOV issued for January '97 violation of BOD limit.
May 16 '97 — NOV issued for February '97 violation of ammonia limit.
May 20 '97 — NOV issued for March '97 violation of ammonia limit.
July 28, '97 — NOV issued for May '97 violation of ammonia limit.

August 11, '97 — NOV issued for June '97 violation of ammonia limit.
September 3, '97 — NOV issued for July '97 violation of ammonia limit.
September 29 '97 — NOV issued in response to a Compliance Inspection Evaluation
conducted September 22, '97.
December 12, '97 — Recommendation for enforcement issued.
April 13, '98 — NOV issued for February '98 violation of ammonia limit.
March 9, '98 — NOV issued for January '98 violation of ammonia limit.
June 1, '98 — Assessment of Civil Penalties issued for $5,153.73.
October '98 — NOV issued in response to a Compliance Inspection Evaluation conducted
October 7, '98.
DMR Review
Reviewing the in -stream data (refer to the In -Stream DO Assessment Report) the facility ✓
has no observable impact to the DO in the receiving stream.
During 1996 and 1997 the facility had several violations of ammonia, BOD, fecal and
DO limits. However, since 1998 the facility has no recorded violations of their permit
limitations.
Basin Plan Review
There is no other nearby dischargers. Upstream of the confluence of the unnamed
tributary to Buffaloe Creek and Buffaloe Creek there is one other discharger. There are a
total of eight permitted dischargers in subbasin 03-04-06. Of the eight dischargers six are
individually permitted.
General Comments
The facility has an ammonia limit of 4 mg/L. The zero flow policy states that the for
dischargers to zero flow streams that an ammonia limit of 2.0 mg/1 summer and 4.0 mg/L
winter should be implemented. Mr. Pace has submitted an EAA in 1992 and the Division
recommended that the facility maintain the current permitted ammonia limit of 4.0 mg/L
year round. Reviewing the ammonia data on the DMRs over the past year the facility has /
been doing a good job of meeting the limitations and monitoring requirements set forth in
the NPDES permit. They have consistently reported ammonia levels below 2.0 mg/L
over the past year. Prior to 1999, the facility was routinely out of compliance for
ammonia, BOD, fecal and D.O. limit violations. It is recommenced that the ammonia
limit remain at 4.0 mg/L during the summer and winter.
The total residual chlorine levels reported in the effluent may be toxic to aquatic life in
the receiving stream. A letter from the Division in 1990, informed Mr. Pace of the
potential toxic effects of elevated residual chlorine levels. The Division is unaware of
any initiatives by the permittee to remove or eliminate the level of residual chlorine in the
effluent. It is recommended that the permittee be advised of the potential toxic effects of
elevated chlorine levels in the draft and final cover letters of the permit.

Residual Chlorine and Ammonia Toxicity Assessment
Residual Chlorine
Ammonia as NH3
(summer)
7Q10 (CFS)
0
7Q10 (CFS)
0
DESIGN FLOW (MGD)
0.015
DESIGN FLOW (MGD)
0.015
DESIGN FLOW (CFS)
0.02325
DESIGN FLOW (CFS)
0.02325
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (
0
UPS BACKGROUND LEVEL
0.22
IWC (%)
100.00
IWC (%)
100.00
Allowable Concentration (ug
17.00
Allowable Concentration (rr
1.00
Ammonia as NH3
(winter)
7Q10 (CFS)
0
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
0.015
Ratio of 0.0 :1
DESIGN FLOW (CFS)
0.02325
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL
0.22
IWC (%)
100.00
Allowable Concentration (rr
1.80
3/14/00
MJM NCO064246

In -stream DO Assessment
for NPDES Permit No. NCO064246
In -Stream DO Assessment Instructions -
Shaded areas require user inputs. If salinity and/or elevation are unknown and cannot be
determined then leave blank, this will not affect the final outcome. After entering data
drag the DO saturation cells, percent saturation cells, and impact assessment cells
down to the appropriate line.
Note: that if salinity or elevation values are not enter then the DO saturation values only
represent the temperature corrected values only.
Upstream Samlin Point Elevation
Downstream Sam lin Point Elevation
Stream DO Standard 1 5
6.0 mg/L if trout water; otherswise 5.Omg/L
Upstream
Field. Field
Measured Measured Percent
Temperature Temperature DO Salinity DO Saturation DO Saturation DO Saturation Saturation
°C K m /L /L m /L m /L m /L
6.8 w
279.95
9.8
12.20
12.20
12.20
80.33
10 7 _ , '`
283.85
9.8
11.10
11.10
11.10
88.25
10.8
283.95
9.75
11.08
11.08
11.08
88.01
B
278.15
10.8
12.77
12.77
12.77
84.57
12 5 ; '
285.65
8.2
10.66
10.66
10.66
76.95
14.1
287.25
8.93
10.28
10.28
10.28
86.84
10.3
283.45
8.7
11.21
11.21
11.21
77.62
14.6
287.75
9.8
10.17
10.17
10.17
96.35
7.9 =
281.05
9.63
11.87
11.87
11.87
81.11
15.4
288.55
64
10.00
10.00
10.00
64.02
17 1 , _.
290.25
6.71
9.64
9.64
9.64
69.57
17
290.15
8.05 `
9.66
9.66
9.66
83.29
11.8
284.95
8.3
10.83
10.83
10.83
76.67
23.4
296.55
5.85
8.51
8.51
8.51
68.71
21.5
294.65
6.05
8.83
8.83
8.83
68.53
16.9 - "
290.05
6.68
9.69
9.69
9.69
68.97
21.4
294.55
6.21
8.85
8.85
8.85
70.20
21.2
294.35
7.25
8.88
8.88
8.88
81.64
16.1
289.25
8.22
9.85
9.85
9.85
83.46
15.T
288.85
5.26 '
9.93
9.93
9.93
52.95
17.5
290.65
5.3.' `..
9.57
9.57
9.57
55.41
17.3
290.45
4.76 ` .
9.60
9.60
9.60
49.56
16.6
289.75
9.47
9.75
9.75
9.75
97.17
12.7
285.85
9.6
10.61
10.61
10.61
90.50
14
287.15
8.07
10.31
10.31
10.31
78.31
16.8
289.95
7.6
9.71
9.71
9.71
78.31
8.3
281.45
10.94
11.76
11.76
11.76
93.05
6.9
280.05
11.2
12.17
12.17
12.17
92.03
6.9
280.05
11:6 ":
12.17
12.17
12.17
95.32
10.7
283.85
;12.5
11.10
11.10
11.10
112.57
12.9 . - °
286.05
1175 ` .
10.56
10.56
10.56
111.27
988.
283.03
11.4 "
11.32
11.32
11.32
100.71
11.8
284.95
8.61 `
10.83
10.83
10.83
79.53
10.3
283.45
9.75
11.21
11.21
11.21
86.99
5
278.15
11.43
12.77
12.77
12.77
89.50
MJM 1 3/14/00

In -stream DO Assessment
for NPDES Permit No. NCO064246
Number of upstream DO violations
1
Number of Downstream DO violations
0
Number of Downstream DO violations
where upstream was above standard
0
Downstream
Field Field
Measured Measured
Temperature Temperature DO Salinity
'C : K m /L /L
Percent
DO Saturation DO Saturation DO Saturation Saturation
m /L m /L m /L %
7.4 -
280.55
9.5
12.02
12.02
12.01
79.07
10.7
283.85
9.7
11.10
11.10
11.10
87.39
11.4
284.55
9.4
10.93
10.93
10.92
86.07
62
279.35
9.72
12.39
12.39
12.38
78.51
12.9
286.05
8.2
10.56
10.56
10.56
77.68
14.5
287.65
8.7
10.19
10.19
10.19
85.38
11.3
284.45
7.9
10.95
10.95
10.95
72.17
15
288.15
9.3
10.08
10.08
10.08
92.27
8.7
281.85
8.9
11.64
11.64
11.64
76.47
15.4
288.55
6.37
10.00
10.00
9.99
63.74
175
290.65
6.6
9.57
9.57
9.56
69.03
1 T
290.15
7.9
-
9.66
9.66
9.66
81.77
.122
285.35
8.1
10.73
10.73
10.72
75.53
23.9
297.05
6.5
8.43
8.43
8.43
77.10
23
296.15
6.2
8.58
8.58
8.57
72.31
17
290.15
6.7
9.66
9.66
9.66
69.35
21:4
294.55
6.2
8.85
8.85
8.84
70.12
21.2
294.35
: 7.
8.88
8.88
8.88
78.86
17
290.15
8.25
9.66
9.66
9.66
85.40
18.5
291.65
5.86
9.37
9.37
9.37
62.56
20
293.15
5.6
9.09
9.09
9.09
61.62
19.7
292.85
5.8
9.15
9.15
9.14
63.44
16.5
289.65
- 9.3
9.77
9.77
9.76
95.26
13.1
286.25
9.2
10.51
10.51
10.51
87.55
15
288.15
7.5
10.08
10.08
10.08
74.41
17.5 -
290.65
7.4-
9.57
9.57
9.56
77.40
8.5
281.65
10.5
11.70
11.70
11.70
89.78
6.9
280.05
11.05
12.17
12.17
12.16
90.84
fi.9
280.05
11.4
12.17
12.17
12.16
93.72
10.7
283.85
12.1
11.10
11.10
11.10
109.01
12.9
286.05
11.5
10.56
10.56
10.56
108.95
9.9
283.05
11.2
11.31
11.31
11.31
99.03
11:.6.
284.75
8.56
10.88
10.88
10.87
78.74
1,0':.5 ":
283.65
9.
11.16
11.16
11.15
80.71
5.1
278.25
11
12.74
12.74
12.73
86.39
MJM 2 3/14/00

In -stream DO Assessment
for NPDES Permit No. NC0064246
Impact
Assessment
U/D
Percent
Saturation
[dimensionless]
Upstream
above
standard
Upstream Downstream downstream
Standard Standard below
Violatation Violatation Standard
1.02
0
0
0
1.01
0
0
0
1.02
0
0
0
1.08
0
0
0
0.99
0
0
0
1.02
0
0
0
1.08
0
0
0
1.04
0
0
0
1.06
0
0
0
1.00
0
0
0
1.01
0
0
0
1.02
0
0
0
1.01
0
0
0
0.89
0
0
0
0.95
0
0
0
0.99
0
0
0
1.00
0
0
0
1.04
0
0
0
0.98
0
0
0
0.85
0
0
0
0.90
0
0
0
0.78
1
0
0
1.02
0
0
0
1.03
0
0
0
1.05
0
0
0
1.01
0
0
0
1.04
0
0
0
1.01
0
0
0
1.02
0
0
0
1.03
0
0
0
1.02
0
0
0
1.02
0
0
0
1.01
0
0
0
1.08
0
0
0
1.04
0
0
0
MJM 3 3/14/00

In -stream DO Assessment
for NPDES Permit No. NC0064246
4.5
277.65
11.6
12.94
12.94
12.94
89.66
6.1
279.25
8.8
12.42
12.42
12.42
70.87
9.5
282.65
11.5
11.42
11.42
11.42
100.68
9.2
282.35
10.17
11.50
11.50
11.50
88.40
25.6
298.75
5.76
8.17
8.17
8.17
70.48
23.8
296.95
7.35
8.45
8.45
8.45
86.98
20
293.15
5.7
9.09
9.09
9.09
62.69
19.
292.15
5.7
9.28
9.28
9.28
61.45
23
296.15
5.05
8.58
8.58
8.58
58.87
23
296.15
5.8
8.58
8.58
8.58
67.61
17
290.15
7.5
9.66
9.66
9.66
77.60
16
289.15
7.6
9.87
9.87
9.87
77.00
19 ,
292.15
7.6
9.28
9.28
9.28
81.93
21
294.15
7.9
8.92
8.92
8.92
88.61
17 -
290.15
7
9.66
9.66
9.66
72.43
16
289.15
8
9.87
9.87
9.87
81.05
13
286.15
7.4
10.54
10.54
10.54
70.23
14
287.15
7.6
10.31
10.31
10.31
73.74
15
288.15
7.3
10.08
10.08
10.08
72.39
9:,
282.15
6.9
11.56
11.56
11.56
59.69
12:.
285.15
8.1
10.78
10.78
10.78
75.16
9
282.15
8.1
11.56
11.56
11.56
70.07
10
283.15
8
11.29
11.29
11.29
70.87
14
287.15
8.2
10.31
10.31
10.31
79.57
9
282.15
8.6
11.56
11.56
11.56
74.40
6
279.15
6.6
12.45
12.45
12.45
53.02
8
281.15
7.9
11.84
11.84
11.84
66.70
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
-
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
273.15
14.62
14.62
14.62
0.00
MJM 6 3/14/00

In -stream DO Assessment
for NPDES Permit No. NCO064246
4.5
277.65
11.5
12.94
12.94
12.93
88.92
6.1
279.25
8.5
12.42
12.42
12.41
68.49
9.5
282.65
11.5
11.42
11.42
11.42
100.72
9.2
282.35
10.05
11.50
11.50
11.50
87.39
25.6
298.75
6.05
8.17
8.17
8.17
74.06
23.8
296.95
6.9
8.45
8.45
8.45
81.69
20
293.15
5.8
9.09
9.09
9.09
63.82
19
292.15
5.7
9.28
9.28
9.27
61.47
23
296.15
5.05
8.58
8.58
8.57
58.90
23
296.15
6.1
8.58
8.58
8.57
71.14
17
290.15
7.5
9.66
9.66
9.66
77.63
16 ` `
289.15
7.6
9.87
9.87
9.87
77.03
19
292.15
7.6
9.28
9.28
9.27
81.96
21
294.15
7.9
8.92
8.92
8.91
88.65
17
290.15
7
9.66
9.66
9.66
72.46
16
289.15
8
9.87
9.87
9.87
81.09
13
286.15
7.4 '
10.54
10.54
10.53
70.26
14
287.15
7.6
10.31
10.31
10.30
73.78
15
288.15
7.3
10.08
10.08
10.08
72.42
9
282.15
6.9
11.56
11.56
11.55
59.72
12
285.15
8.1
10.78
10.78
10.77
75.19
9
282.15
8.1
11.56
11.56
11.55
70.10
10
283.15
8
11.29
11.29
11.28
70.90
14
287.15
8
10.31
10.31
10.30
77.66
9
282.15
86
11.56
11.56
11.55
74.43
6
279.15
6.6
12.45
12.45
12.44
53.04
8
281.15
7.9
11.84
11.84
11.84
66.73
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
273.15
14.62
14.62
14.61
0.00
MJM 7 3/14/00

,1 6
In -stream DO Assessment
for NPDES Permit No. NCO064246
/ •
1
1
1
1 •:
1
1
1
11
1
1
1
1 •
1
1
1
11
1
1
1
11
1
1
1
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1
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MJM 8 3/14/00

Bladenboro WWTP
NCO026352
Ratio of Percent DO Saturation Upstream to Percent DO Saturation Downstream of Permitted
Outfall(s)
5.00
0
4.50
Cn
0
4.00
0
c
3.50
p
3.00
a)
CQ
a�
2.50
o
c p
°
2.00
Cz
U)
1.50
O
0
a
1.00
°
0.50
oC
0.00
MJM 3/14/00

e
SOC PRIORITY PROJECT: Yes: No: X
If Yes, SOC No.:
NPDES STAFF REPORT AND RECOMMENDATIONS
FOR PACE MOBILE ACRES WWTP
Date: 10/16/98
To: Permits and Engineering Unit
Water Quality Section
Attention: CHARLES WEAVER
County:JOHNSTON
Permit No.: NCO064246
1. Facility and Address: Pace Mobile Acres WWTP
13356 Buffalo Rd
Clayton, NC 27520
2. Date of site visit: 10/7/97
3. Report Prepared by: KIRK STAFFORD
4. Persons Contacted and Telephone Number: Jim Pace 919-553-7922
5. Directions to Site: US 42 East from Clayton, left on Buffaloe RD(SR 1003) ,
bear left at Archer Lodge, facility on the right.
6. Discharge Point(s), List for all discharge points:
Latitude 3504213311 Longitude:7802215599
Attach a USGS map extract and indicate treatment facility site and discharge point
on map.
U.S.G.S. Quad No.: E25NW U.S.G.S. Quad Name:CLAYTON
7. Site size and expansion area consistent with application? Yes: X
No: If No, explain:
NPDES STAFF REPORT
Page 1

8. Topography (relationship to flood plain included): Slope less than 10%.
9. Location of nearest dwelling: approximately 250 feet.
10. Receiving stream or affected surface waters:UT to Buffaloe Creek.
a. Classification: C NSW
b. River Basin and Subbasin No.: NEUSE 03-04-06
C. Describe receiving stream features and pertinent
downstream uses: Wet weather ditch.
1. a. Volume of Wastewater to be permitted: 0.015 MGD
b. What is the current permitted capacity of the Waste Water Treatment facility?
0.015 MGD
C. Actual treatment capacity of the current facility (current design capacity)?
0.015 MGD
d. Date(s) and construction activities allowed by previous Authorization to
Construct issued in the previous two years: NA
e. Please provide a description of existing or substantially constructed
wastewater treatment facilities: Surge tank, manual bar screen, 2 trains
consisting of aeration basin and clarifier, aerated sludge holding tank,
and chlorination.
f. Please provide a description of proposed wastewater treatment facilities:
NONE
g. Possible toxic impacts to surface waters: CHLORINE
h. Pretreatment Program (POTWs only):
in development: approved:
should be required:_ not needed:
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM permit no.:
Residual Contractor:
NPDES STAFF REPORT
Page 2

Telephone No.:
b. Residuals stabilization: PSRP:
PFRP: Other:
C. Landfill:
d. Other disposal/utilization scheme (Specify): Sludge hauled to Central
Johnston WWTP by septage hauler.
3. Treatment plant classification (attach completed rating sheet): CLASS II
4. SIC Code(s): 6515
Wastewater Code(s) of actual wastewater, not particular facilities i.e.., non -contact
cooling water discharge from a metal plating company would be 14, not 56.
Primary: 08
Main Treatment Unit Code: 030-7
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals
only)? NO
2. Special monitoring or limitations (including toxicity) requests: NONE
3. Important SOC, JOC or Compliance Schedule dates: (Please indicate) NA
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge
options available? Please provide regional perspective for each option evaluated.
Spray Irrigation: Insufficient property.
Connection to Regional Sewer System: Not available.
Subsurface: Not feasible.
Other disposal options: NONE
NPDES STAFF REPORT
Page 3

5. Other Special Items:
THE REGIONAL OFFICE CONDUCTED A COMPLIANCE EVALUATION
INSPECTION AND AS A RESULT A NOTICE OF VIOLATION WAS ISSUED FOR
PERMIT VIOLATIONS.
THE RALEIGH REGIONAL OFFICE RECOMMENDS THE RENEWAL OF THE
NPDES PERMIT FOR THIS FACILITY IN ACCORDANCE WITH ALL DIVISION
POLICIES FOR A PERIOD OF TIME CONSISTENT WITH THE RIVER BASIN
POLICY IN EFFECT.
Signature of report preparer
4�r Water Quality egi
attachments
Date

/1, C- Al P n-
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Nc DE-x9 /D W 6�/ n/ PDE5
Po, Be- �9 S35�
n!C �762-6 s�s�
a-m- ✓� ✓- r/ P D E•5
M REMM
o Water puma
Pretreatment
'8,

B. Description Of The Existing Treatment Works Including Size
Of Major Components
A wastewater treatment plant has been installed which is
capable of treating 15,000 gallons per day of'domestic strength
wastes. The plant was installed as a dual train plant and the
facility consists of the following components:
1. Manually cleaned bar screen
2. Equalization chamber - 1 ea 3,000 gallon
3. Aeration chambers - 2 ea 7,500 gallons
4. Clarifiers - 2 ea 1,250 gallons
5. Aerated sludge holding chamber - 1 ea.5,000 gallon
6. Dual air blowers - dual 1.15 cfm
7. Chlorination system - 250 gallon with tablet chlorinator
8. Site fence
9. Plant outfall