NC0021121_Permit Issuance_20000110

NPDES DOCUMENT 1;CANNINO COVER SHEET
NPDES Permit:
NC0021121
Mount Airy WWTP
Document Type: ;
Permit Issuance`
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 10, 2000
This documeiit is printed on reuse paper - igriore any
content on the re-srerse side

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, P.E., Director
January 10, 2000
Mr. Kent Scott
City of Mount Airy
P. O. Box 70
Mount Airy, North Carolina 27030
NCDENR
Subject: Issuance of NPDES Permit NC0021121
Mount Airy WWTP
Surry County
Dear Mr. Scott:
In accordance with the request for discharge permit application received on December 28,
1998, the Division is forwarding herewith the subject NPDES 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 December 6, 1983.
The following modifications have been included in the final permit and include changes made
since the draft permit mailed on November 17, 1999:
• Effluent monitoring for chromium and nickel has been deleted. These parameters will be
monitored via the City's pretreatment plan.
• Conductivity monitoring has been reduced from daily to weekly.
• Monitoring for NH3 as N has been reduced from daily to three (3) times per week.
• Instream monitoring will be provisionally waived due to Mount Airy's membership in the
Yadkin -Pee Dee River Basin Association. Instream monitoring will be reinstated upon
withdrawal from the Association. This statement is located on the Effluent Limitations
and Monitoring Requirements page.
Please note that the monitoring frequency for mercury will remain the same. A review of the
data submitted and the results of the reasonable potential analysis both indicated that a mercury
limit is still needed. Therefore, the monitoring frequency cannot be reduced.
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 a demand is made, this permit shall be final and binding.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visir us ON THE INTERNET @ http://h2o.enr.state.nc,us/NPDES

4
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,
Coastal Area Management Act, or any other Federal or Local governmental permits may be required.
If you have any questions or need additional information, please contact Ms. Jacquelyn
Nowell at telephone number [phone], extension 512.
Sincerely,
Original Signed By
David A. Goodrich
Kerr T. Stevens
cc: Central Files
Winston-Salem Regional Office, Water Quality
Aquatic Toxicology Unit
Roosevelt Childress / EPA Region IV
NPDES Permit File
Technical Assistance & Certification Unit
Point Source Compliance Enforcement Unit

Permit NC0021121
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, the
City of Mount Airy
is hereby authorized to discharge wastewater from a facility located at the
Mount Airy WWTP
U.S. Highway 52
Mount Airy
Surry County
to receiving waters designated as the Ararat River in the Yadkin -Pee Dee 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 February 1, 2000.
This permit and authorization to discharge shall expire at midnight on February 29, 2004.
Signed this day January 10, 2000.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

8
Permit No. NC0021121
SUPPLEMENT TO PERMIT COVER SHEET
City of Mount Airy
is hereby authorized to:
1. Continue to operate an existing 7.0 MGD wastewater treatment facility consisting
of mechanical bar screening, grit chamber, primary clarifiers, trickling filters,
activated sludge tank, secondary clarifiers, belt press, sludge thickener, chlorine
contact tank, dechlorination, anaerobic digester, and continuous recording flow
meter, located at Mount Airy Wastewater Treatment Plant, off of U. S. Highway
52, Mount Airy, Surry County, and
2. Discharge from said treatment works at the location specified on the attached map
into the Ararat River, which is classified C waters in the Yadkin -Pee Dee River
Basin.

Latitude:36° 28' 41"
Longitude:80° 36' 10"
USGS Quad #:B16NE
River Basin #:030703
Receiving Stream: Ararat River
Stream Class: C
Mount Airy WWTP
NC0021121
Surry County

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NC0021121
During the period beginning on the effective date of the permit and lasting until expansion, the Permittee is authorized to discharge from outfall(s) serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS.
. T, ,
MQNIT0RING:QEIRE ENT S
Monthly- `
verage:
Weekly
,Average
Daily iMaximum
... r
Measuremen
.. `requericy 1
Sample
Type
Sample
Location'
Flow
7.0 MGD
Continuous
Recording
I or E
BOD5 2
30.0 mg/I
45.0 mg/I
Daily
Composite
E,
Total Suspended Solids2
30.0 mg/I
45.0 mg/l
Daily
Composite
E, I
NH3-N (April 1 - October 31)
13.0 mg/I
3/week
Composite
E
NH3-N (November 1 - March 31)
3/week
Composite
E
Dissolved Oxygen (April 1 - October 31)3
Daily
Grab
E,U,D
Dissolved Oxygen (November 1 - March 31)
Daily
Grab
E,U,D
Fecal Coliform
200/100 ml
400/100 ml
Daily
Grab
E,U,D
pH4
Daily
Grab
E
Total Residual Chlorines
Daily
Grab
E
Temperature
Daily
Grab
E,U,D
Total Nitrogen
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Conductivity
Weekly
Grab
E,U,D
Oil and Grease
30.0 mg/I
60.0 mg/I
Weekly
Grab
E
Lead
59 pg/I
Weekly
Composite
E
Cyanide
12 pug/I
Weekly
Grab
E
Mercury
0.028 pug/I
Weekly
Composite
E
Copper
2/month
Composite
E
Zinc
2/month
Composite
E
Silver
2/month
Composite
E .
Chloride
2/month
Composite
E
Chronic Toxicity6
Quarterly
Composite
E
Notes:
Sample Locations: E - Effluent, I - Influent, U - Upstream at N.C. Highway 52, D - Downstream (1) approximately 1.0 mile below the discharge before the confluence with
Stewarts Creek and (2) approximately 6.0 miles below the discharge before the confluence with Caddie Creek. Upstream and downstream samples shall be grab samples
and shall be collected three times per week during June, July, August, and September and once per week during the remaining months of the year. Instream monitoring
is provisionally waived in Tight of the permittee's participation in the Yadkin- Pee Dee River Basin Association. Instream monitoring will be immediately
reinstated should the permittee end its participation in the Association.
2 The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal).

3 The daily average dissolved oxygen effluent concentration shall not be Tess than 5 mg/I.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5 Monitoring requirement applies only if chlorine is added for disinfection.
6 Chronic Toxicity (Ceriodaphnia) P/F Q 42%; January, April, July, October; See Special Conditions A (2) of the Supplement to Effluent Limitations. Quarterly toxicity
sampling shall be conducted at the same time as metals sampling.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0021121
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A (2). CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or
significant mortality to Ceriodaphnia dubia at an effluent concentration of 42.0%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures
outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised
February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be
performed during the months of January, April, July, and October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean
of the highest concentration having no detectable impairment of reproduction or survival and the
lowest concentration that does have a detectable impairment of reproduction or survival. The
definition of "detectable impairment," collection methods, exposure regimes, and further
statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR -I) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,
DWQ Form AT-3 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch
no later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements
and all concentration/response data, and be certifi.:.: oy laboratory supervisor and ORC or
approved designate signature. Total residual chlorine of the effluent toxicity sample must be
measured and reported if chlorine is employed for disinfection of the waste stream.

J
Y
Permit No. NC0021121
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
(continued)
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,
monitoring will be required during the following month.
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, minimum control organism reproduction, 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.

Permit Notes
NC0021121
Mount Airy WWTP is requesting renewal of existing permit. Discharges into the
Ararat River. This stream is on the 303d list for impaired streams in the Yadkin River
Basin with a rating of partially supporting uses. The segment of concern is from the
Mt. Airy WWTP to State Road 2026 with the problem parameter of sediment, also
has reported poor biological data (i.e. bad bugs) per M. Woolfolk of Modeling Unit.
A management strategy will be developed for the sediment problem, however it is rated
as a low priority.
Facility is permitted at 7.0 MGD with effluent limits of:
BOD5
NH3 (summer)
NH3 (winter)
DO (summer)
DO (winter)
TSS
Fecal
TRC
Oil & Grease
Cadmium
Chromium
Nickel
Lead
Cyanide
Mercury
Copper
Zinc
Silver
Chlorides
30 mg/1
13 mg/1
monitor
5 mg/1
monitor
30 mg/1
200/100m1
monitor
30 mg/1 ; 60 mg/1 (da. max.)
4.7 µg/1(da. max.)
119 µg/1(da. max.)
209 µg/1(da. max.)
59 µg/1(da. max.)
12 µg/1(da. max.)
0.028 µg/1(da. max.)
monitor
monitor
monitor
monitor
This facility has a chronic toxicity test of 42%, in JAN APR JUL OCT.
Review of compliance data indicated that facility appears to be well operated. It has
met all limits consistently for the past three years. The average flow of the facility (8/98
— 7/99) is 4.4 MGD, approximately 63% of the design capacity. BODS, NH3, and TSS
values are well below the permitted limits and the plant is meeting current limits with no
problems.
Toxicity test results- All passes thus far in 1999. The facility has had at least one failure
per year since 1995. (There were two fails in 1995, JUL and OCT, followed by a PASS).
Fails in 1996 and 1998 were both in JAN. In 1997, FAIL occurred in APR). D. Folley of
pretreatment indicated that effluent has TSS problems in the winter, which may
contribute to toxicity problems. Also high chloride concentrations in effluent (due to the

Permit Notes
NO0021121
Page 2
number of textile plants) may contribute to problems.
Major contributing Industries:
• Sara Lee Sock Company -
• Kentucky Derby Hosiery -
• Brown Wooten Mills, Inc.
• Lynn Hosiery Mills
• Pine State Knitwear
• Cross Creek Apparel
• Renfro Corp.
• Spencer's Inc. #1
• Spencer's Inc. #2
127,855 GPD
228,231 GPD
- 78,909 GPD
- 32,728 GPD
- 249,905 GPD
- 2,063,506 GPD
- 304,880 GPD
- 51,239 GPD
- 106,996 GPD
Mt. Airy has several permitted and monitored metals. DMRs contain submitted data of
permitted metals. Facility is under a Long Term Monitoring Program with the
Pretreatment Program. Parameters of Concern monitored quarterly under the LTMP are
As, Cd, Cr, Cu, Pb, Hg, Mo, Ni, Se, Zn, Cn, Ag, BOD, TSS, and NH3. Samples are
taken at influent and effluent. (This data is not on the DMRs, and will be given to
NPDES as soon as BDL data is verified.) As, Hg, Mo, and Se are in the LTMP only
because of sludge regulations. Town now puts sludge in a landfill, so these parameters
may be removed later with the exception of Hg.
Special Note: Mt. Airy voluntarily monitors for color, at the following sites, 1)
upstream, 2) downstream, 3) influent and 4) effluent, at the frequency of daily for 1
week per month.
Reasonable potential results —Data from July 1998 — July 1999 was entered into the RP
spreadsheet for determination of parameters where limits or monitoring should be
maintained in the NPDES permit. (Additional LTMP data will be included when
obtained from the facility.) Reviewed results with D. Folley of Pretreatment, and
discussed the tentative recommendations for metals limits.
Initial recommendation — continued limits for Chromium, Lead, Cyanide, monitoring for
copper, zinc, silver and chlorides. Delete limits and/or monitoring for Cadmium, Nickel,
and Mercury. All of these parameters are in the LTMP except for chlorides.
During review with Dana, she recommended that cyanide limit may be dropped since
only 1 value was above detection. (Note: none of the eight industrial (textile)
contributors have cyanide listed as a parameter that would be found in the wastewater.)
Also silver monitoring should be dropped because only 1 of 24 values was above
detection. Told her that deleting silver may be considered because it was an action level

Permit Notes
NC0021121
Page 3
however, may have to evaluate dropping Cn and consult with Dave. Will include LTMP
data upon receipt and re-evaluate the updated reasonable potential analysis.
Comparison of reasonable potential analysis results for DMR data only and inclusion of
LTMP data.
DMR data including LTMP
Cd drop limit drop limit
Cr Limit drop limit, monitor only
Ni drop limit drop limit
Pb Limit Limit
Cn Limit Limit
Hg drop limit Limit
Cu monitor monitor
Zn monitor monitor
Ag drop drop
Chloride monitor NA
Bold parameters and results are contrasts that occurred between data reviews.
• Cr - increased observations when including the LTMP data, changed the coefficient
of variation and the initial predicted concentration of 127.6 ug/1 was lowered to 116
ug/1, now less than the allowable concentration of 119 ug/l. Therefore a
recommended limit for Cr became monitor only and no limit needed.
• Hg - increased observations included a hit at 0.3 ug/1, when previously there were
only below detections reported. This value caused the predicted value to be greater
than the allowable concentration of 0.03 ug/1, therefore a limit is needed based on
the LTMP data.
Consulted with DAG and determined that all available effluent data should be used in the
reasonable potential analysis, will present a larger database of data. It is assumed that the
data is valid, and if addition of LTMP data changes the results of any previous analysis,
the data is still accepted. In this instance, a Cr limit was deleted and a Hg limit was
added.
Recommend renewal of the permit with the renewal of all oxygen consuming limits
and monitoring requirements. For metals and toxicants, recommend the deletion of
limits for cadmium, chromium, and nickel. Maintain monitoring for chromium,
copper, zinc, silver, and chlorides and limits for lead, cyanide, and mercury. Note
chromium monitoring can be reduced from weekly to twice per month. (With the
possible tie -on of the Hamilton Beach Proctor Silex plant to the Mt. Airy WWTP1
want to keep a higher frequency of Cr monitoring than quarterly with the LTMP.

12/14/99 - Comments received on draft permit from Mount Airy:
Requested reduction in monitoring frequency for :
• NH3 - from daily to weekly. Facility has limit of 13 mg/l, that has been
consistently met since Jan. 1997.
• Conductivity — from daily to weekly, due to amount of standards that must be
used (?) and cost.
• Mercury — from weekly to twice a month, due to consistently being below
detection.
Also, Mt. Airy is a member of the Yadkin -Pee Dee Association and has contracted
Pace Analytical to do upstream and downstream monitoring for members. They
want the renewed permit to reflect this.
Recommendations regarding comments:
Will include a special condition about the Yadkin Association monitoring, as
long as Mt. Airy is a member then instream monitoring will be conducted by the
Association. If membership is ever ended, then instream monitoring will become
the responsibility of the facility.
- Will recommend reduction in frequency for conductivity from daily to weekly.
Will recommend that the frequency for NH3 be reduced from daily to 3/week
because of the level of treatment that is being achieved. NH3 is averaging <1
mg/l. The reduction to weekly may be too large a reduction.
Also in the case of mercury, the monitoring in the LTMP is the reason that the
value above detection was found. The frequency of weekly should remain the
same.

Citv of Mount
r
December 9, 1999
Ms. Jacquelyn M. Nowell
NPDES Unit
N.C. Dept. of ENR
Division of Water Quality
1617 Mail Service Center
Raleigh, N.C. 27699-1617
Subject: Mount Airy WWTP
Draft NPDES Permit
Permit No. NC0021121
Dear Ms. Nowell:
P.O. Box 70
Mount Airy, N.C. 27030
Telephone: [phone]
Fax: [phone]
E N EE BRANCH
We have received your letter and draft permit dated November 17, 1999. The City of Mount Airy
appreciates the deletions of the effluent limitations for cadmium, chromium and nickel along with
reduced monitoring for chromium. At this time, I would like to ask that you consider the comments
below concerning reduction in monitoring frequencies.
• Ammonia -Nitrogen: Reducing the monitoring frequency from daily too weekly. We are
asking for this reduction due to our records since January, 1997 show that we are well
below our April -October permit limit of 13 mg/l. (See attached monitoring results.) We
are also asking for this reduction due to the expense of running this analysis.
• Conductivity: Reducing the monitoring frequency from daily too weekly. We are asking
for this reduction due to the amount of standards that we must use to obtain the test
results and the cost of those standards.
• Mercury: Reducing of the monitoring frequency from weekly to twice per month. Our
records show that since January, 1997 we have obtained only less than results for this
parameter. (See attached monitoring results.)
I also would like to mention that the City of Mount Airy WWTP is a member of the Yadkin Pee -Dee
River Basin Association. At this time Pace Analytical has been contracted by the association to do
our entire up and down stream monitoring and reporting. If possible, we would like for our NPDES
Permit to reflect this fact.
Thank -you in advance for taking the time to address these comments. If you have any questions or
need further information please call me at 336-786-3597.
Yours u1y,
Kent Scott
ORC
1

MOUNT AIRY WWTP AMMONIA -NITROGEN AND MERCURY RESULTS
AMMONIA -NITROGEN APRIL-OCTOBER LIMIT 13.0 MG/L
1997 1998
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
0.27
0.499
February
0.174
0.283
March
0.623
1.79
April
0.685
1.25
May
0.709
1.7
June
0.683
1.07
July
0.793
2.27
August
0.468
0.72
September
1.13
5.00
October
0.793
2.15
November
0.757
1.92
December
1.19
5.82
AVERAGE
0.6896
2.039
MERCURY DAILY MAXIMUM LIMIT .028 UG/L,
1997
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
<0.2
<0.2
February
<.02
<.02
March
<.02
<.02
April
<.02
<.02
May _
<.02
<.02
June
<.02
<.02
July
<.02
<.02
August
<.02
<.02
September
<.02
<.02
October
<.02
<.02
November
<.02
<.02
December
<.02
<.02
AVERAGE
<.02
<.02
RESULTS IN MG/L
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
1.08
4.61
February
0.647
1.3
March
0.432
0.981
April
0.576
2.8
May
0.535
3.71
June
0.7
4.67
July
0.665
2.95
August
0.62
0.922
September
0.718
1.11
j October
0.759
1.59
November
0.856
1.52*
December
0.792
2.61
AVERAGE
0.69831 2.3978
RESULTS IN UG/L
1998
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
<0.2
<0.2
February
<.02
<.02
March
<.02
<.02
April
<.02
<.02
May
<.02
<.02
June
<.02
<.02
July
<.02
<.02
August
<.02
<.02
September
<.02
<.02
October
<.02
<.02
November
<.02
<.02
December
<.02
<.02
AVERAGE
<.02
<.02
1999
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
0.892
2.48
February
0.654
0.912
March
0.533
0.92
April
0.844
2.35
May
0.559
1.34
June
0.751
4.25
July
0.507
0.945
August
0.656
1.48
September
0.509
0.70
October
0.625
1.3
November
N/A
N/A
December
N/A
N/A
AVERAGE
0.6530
1.6680
1999
MONTHLY
DAILY
MONTH
AVERAGE
MAXIMUM
January
<0.2
<0.2
February
<.02
<.02
March
<.02
<.02
April
<.02
<.02
May
<.02
<.02
June
<.02
<.02
July
<.02
<.02
August
<.02
<.02
September
<.02
<.02
October
<.02
<.02
November
N/A
N/A
December
N/A
N/A
AVERAGE
<.02
<.02

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0021121
Facility Information
(1.) Facility Name:
Mount Airy WWTP
(2.) Permitted Flow:
7.0 MGD
(5.) County:
Surry
(3.) Facility Class:
IV
(6.) Regional Office:
Winston-Salem
(4.) Facility/Permit Status:
(i.e. New, Modification,
Existing or Renewal)
Renewal
(7.) USGS Topo Quad:
B 16NE
Stream Characteristics
(1.) Receiving Stream:
Ararat River
(2.) Stream Classification:
C
(6.) Winter 7Q10 (cfs):
31
(3.) Subbasin:
030703
(7.) 30Q2 (cfs):
(4.) Drainage Area (mi2):
75.2
(8.) Average Flow (cfs):
90
(5.) Summer 7Q10 (cfs)
14.9
(9.) IWC (%):
42
Changes Incorporated into Permit Renewal
Proposed Changes
Parameters Affected
Basis for change(s)
Deletion of effluent
limitations and NPDES
monitoring
Cadmium
Reasonable potential analysis
indicated limits no longer
needed. Parameters will be
monitored quarterly in
Pretreatment's LTMP.
Deletion of effluent limitation
and reduction of monitoring
frequency from weekly to
twice per month
Chromium, Nickel
Reasonable potential analysis
indicated limit no longer
needed. Potential for
connection to new industry
with Cr and Ni in effluent
Summary
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: 10/20/99
Permit Scheduled to Issue: 12/06/99
Page 1
Version: November 1, 1999

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0021121 (Continued)
State Contact
If you have any questions on any of the above information or on the attached
permit, please contact Jacquelyn M. Nowell at [phone], extension 512.
Copies of the following are attached to provide further information on the permit
development:
• Existing permit effluent sheets with changes noted (existing facilities only)
• Draft Permit
• Permit Notes
Signature:
NPDES Recommendation by:
Regional Office Comments
/V07
Signature:
Regional Recommendation by:
Reviewed By:
Regional Supervisor:
Signature:
Date:
NPDES Unit:
Signature:
Date
Page 2
Version: November 1, 1999

1/a3/1999 12:44 3367714630 DIV OF WATER QUALITY
NOJ-01-1939 14:3' FRC'1± DEM WATER QUALITY SECT:DN TO
WEi20
PAGE 02/02
P.03/13
FACT SHEET FOR NPDES PER.iT DEVELOPMENT
NPDES No. NCO021.121 (Continued)
$.trace Coutast
If you have any questions on any of the above information ca. on the attached
pertnt, pie= contact Jacquelyn M. Nowell at (919) 733•5083, extension 312.
Codes of the following are attached to provide further information on the permit
development:
• Existing pc,7mit effluent sheets with changes noted (existing facilities only)
• Draft Permit
• Permit Notes
NP13Es Recommendation by:
Es:_(Sre Coma�et<t
/ w i c,t./z.�. *I cc1
Procfv� (LQ C wUYi,1 LA -do 71-u. ' sw.ren.
CoCaA.L. GQ.rrl ,tc. artdry 2- CA,-lmyru urig., * Nfcica
Cc-, is , ''�'""� f Lo-c reti e oc ; r a rncnri -t-o-? U�
..e_tca.. /oo : Ica
Signature:
1744rr4
Region/LT Recommendation by:
Rev}ew t BY_;
- xr<<It?n- m/
f th;xt
{c cf rop/ d
l,niuf ruaCic
SA/A/1%4' Rcvv\./P- Ictq
Page 2
Version; November ., 1999

4(,))r
NORTH CAROLINA
SURRY COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly
commissioned, qualified and authorized by law to administer oaths,
personally appeared George W _ Summerlin
who being first duly sworn, deposes and says: that he (she) is
Publisher (Publisher or other officer or employee
authorized to make affidavit) of MOUNT AIRY NEWSPAPERS, INC.,
engaged in the publication of a newspaper known as MOUNT AIRY
NEWS, published , issued, and entered as second class mail in the city of
Mount Airy 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
MOUNT AIRY NEWS on the following dates:
November 12, 1999
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 Statutes of North Carolina
and was a qualified newspaper within the meaning of Section 1-597 of
the General Statutes of North Carolina.
This 16
day of NovemhPr , 19 99
nature of person making affidavit
Sworn to and subscribed before me, this 1 6 day of
November 19 99
Notary Public
My Commission expires: August 1 7, 2 0 04
.
aw r
OTAR,.y,,
€•A�B1.1G
CLIPPING OF LEGAL
ADVERTISEMENT
ATTACHED HERE
PUBLIC NOTICE
State of North Carolina
Environmental
Management
CommissionlNPDES 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
- ..,«,J,.a• N,�
sent in the draft permit are'
available upon request and;
payment of the costs of;
reproduction. Mail corm.:
ments and/or requests fo"r'
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
(attached) in any communi-:
cation. 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 a.m. and-
5:00 p.m. to review infor`=
mation on file.
•
NPDES Permit Number.
NC0021121, MOUNT
AIRY, TOWN - WWTP, P.O.;
Box 70, Mt. Airy, NC 27030.
has applied for a perm(t'
renewal for a facility locat-:
ed in Surry County dis-,
charging treated waste'-,
water into Ararat River ip
the Yadkin -Pee Dee River
Basin. Currently ammonia;
lead, cyanide, and mercury;
are water quality limited
This discharge may affeot:
future allocations in this
portion of the receiving
stream.
•
This 10th day Uf
November, 1999.
•
November 12, 1999

Mt.Airy WWTP
'98 - 7/99 DMRs, LTMP data
Facility Name
Mt. Airy WWTP
1
NPDES #
NC0021121
Qw (MGD)
7
7Q10s (cfs)
14.9
! WC (%)
42.14
,c'ving Stream
Ararat River
Stream Class
C
FINAL RESULTS
Cd
Max. Pred Cw
3
ug/I
Allowable Cw
4.7
ug/I
Max. Value
2
Cr
Max. Pred Cw
116
ug/I
Allowable Cw
118.7
ug/I
Max. Value
58
Ni
Max. Pred Cw
49.6
ug/I
Allowable Cw
208.8
ug/I
Max. Value
31
Pb
Max. Pred Cw
110.5
ug/I
Allowable Cw
59.3
ug/I
Max. Value
65V
Cn
Max. Pred Cw
16.8
ug/
Allowable Cw
11.9
ug/I
Max. Value
14
Hg
Max. Pred Cw
0.36
ug/I
Allowable Cw
0.0
ug/I
Max. Value
0.3
Cu
Max. Pred Cw
706.5
ug/
Allowable Cw
16.6
ug/
Max. Value
471
Zn
Max. Pred Cw
387.8
ug/
Allowable Cw
118.7
ug/
Max. Value
277
Ag
Max. Pred Cw
13.5
ug/
Allowable Cw
0.1
ug/I
Max. Value
9
Chloride
Max. Pred Cw
1241000
ug/I
Allowable Cw
545852.5
ug/I
Max. Value
730000
sr
meivira
if ( P/71 d)
44,146 Offow 4 ft
-
,,ari.d/c
p.m ira�-��)
,Etca
tre
1- fieil4-
fix` J)
moo'
9/21/99
NC0021121

1
2'
31
4
5.
6
7
8
9
10
1
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
21
28
29
30
31
3:
33
34
35
36
37
36
39
46
POTW NAME=
CITY OF MOUNT AIRY WW1 P
NPDES PERMIT 6=
NC0021121
SAMPLE LOCATION=
PLANT EFFLUENT
BELOW DETECTION LIMIT DATA pow SHOULD BE MARKED AS'<AND THE DETECTION LIMIT', I.o. <0.002.
SAMPLE
GATE
FLOW
1.1G0
ARSENIC
CADMIUM
CHROMIUM'
COPPER
LEAD
MERCURY
MOLYBDENUM
WCKEL
SELENIUM
ZINC
BOO
TSS
CYANIDE
SILVER
AMMONIA
OIL/GREASE
10-14.98
< 0.0103
< 0.0020
0.0160
0 2680
0.0220
< 0 000200
< 0.1000
<
0.0100
< 0 0100
0.1350
9.66
5.00
< 0.0100
< 0.0050
0.751
< 5.00
1.12-99
< 0.0100 ,
< 0.0020
0.0130
0.1470
0.0480
< 0.030200
< 0 1000
0.0120
< 0.0100
0.1540
3.32
10.00
< 0.0050
< 0.0050
0609
< 5.00
4-13-99
< 0.0100
< 0.0020
0.0050
0.2510
0.0270
• 0.000300-
< 0 1000
<
0 0100
< 0.0100
0. I310
2.00
2 00
< 0.0100
< 0.0050
0 479
< 5.03
7-22-99
< 0.0100
0.0020
0.0050
0.2100
0.0230
< 0.000200
< 0 1000
0 0310
< 0.0100
0.1410
5.00
0.00
< 0.0100
< 0.0050
0 654
< 5 00
TOTAL.
AVERAGE=
MAXIMUM:,
MINIMUM=
0.000
0.0400
0.0080
0.0400
0.8760
0.1200
0.18X)900
0.4000
0.0630
0 0400
0.5710
19.96
25.00
0.0350
0.0203
2 493
20.000
8DIV/01
0.0100
0.0020
11.0100
0 2190
0.0300
0.00 225
0.1000
00158
0.0100
0.1426
5.00
8.25
0.0088
0.0050
0.823
5 000
0 000
0 0100
0.0020
0 0160
0.2080
0.0480
0 000300
0.1000
0.0310
0.0100
0.1640
9.86
10.00
0.0100
0.0050
0.751
5.000
0.000
0.0100
0 0020
0.0050
0 1470
0.0220
0.030200
0.1000
0 0100
0 0100
0.1310
2 00
2 00
0.0050
0.0050
0.479
5 000
BDL DATA USED FOR AVERAGES ARE ESTIMATED TO BE: (I.& 0, 112 DETECTION UMIT, THE DETECTION UMIT)

MKEX75/MN
COMPLIANCE MONITORING - DMR REPORT
01/03/2000
PERMIT--NC0021121 PIPE--001 DMR (YR/MO)--9904 LOC---E
FACILITY --MOUNT AIRY, TOWN - WWTP CLASS--4
LOCATION --MOUNT AIRY REGION/COUNTY--04 SURRY
50050 00010 71900 00310 00610 00530 31616 00300
DAY Q/MGD TEMP MERCURY BOD NH3+NH4- RES/TSS FEC COLI DO
01 5.0540 32.20 4.00 .67 3.5 2.0 10.00
02 4.1630
03 2.3620
04 1.9030
05 2.7650 22.70 LESSTHAN 2.00 .49 6.0 2.0 9.10
06 3.9390 20.20 3.00 .28 6.0 2.0 9.00
07 4.5290 21.50 8.00 .46 27.0 LESSTHAN 8.80
08 4.7400 23.90 23.00 1.09 54.0 3.0 7.70
09 5.0580 26.10 10.00 1.20 15.0 11.0 8.00
10 3.8080
11 2.1990
12 3.6510 22.70 LESSTHAN 2.00 .57 7.0 LESSTHAN 8.70
13 4.0690 21.00 LESSTHAN .47 6.0 LESSTHAN 8.80
14 5.0000 21.60 LESSTHAN .64 2.0 500.0 8.60
15 5.0030 22.70 3.00 .54 6.0 100.0 8.50
16 5.3460 23.80 21.00 1.35 87.0 3.0 8.30
17 3.6340
18 2.1020
19 3.5640 20.10 LESSTHAN 3.00 .85 7.0 3.5 9.10
20 4.4110 21.00 5.00 .83 20.0 27.0 8.70
21 4.8650 23.30 12.00 .78 43.0 4.0 8.50
22 4.6940 24.80 16.00 2.33 27.0 34.5 8.30
23 4.7250 25.20 26.00 1.68 74.0 1.0 8.10
24 3.3340
25 2.3300
26 4.1390 25.80 LESSTHAN 6.00 .60 12.0 LESSTHAN 8.80
27 4.9400 24.10 6.00 .44 24.0 2.0 8.40
28 4.9800 23.20 7.00 .60 9.0 LESSTHAN 7.80
29 5.4850 23.00 6.00 .85 24.0 3.0 8.50
30 4.9720 22.20 11.00 .92 24.0 44.0 8.50
REPORTED
AVERAGE 4.0590 23.38 LESSTHAN 8.48 .84 23.0 4.7 8.60
MAXIMUM 5.4850 32.20 LESSTHAN 26.00 2.35 87.0 500.0 10.00
MINIMUM 1.9030 20.10 LESSTHAN LESSTHAN .28 2.0 LESSTHAN 7.70
COMPUTED
AVERAGE 4.0588 23.38 .0000 8.28 .84 23.0 4.7 8.58
MAXIMUM 5.4850 32.20 LESSTHAN 26.00 2.33 87.0 500.0 10.00
MINIMUM 1.9030 20.10 LESSTHAN LESSTHAN .28 2.0 LESSTHAN 7.70
UNIT MGD DEG.0 UG/L MG/L MG/L MG/L #/100ML MG/L
STYPE ?? I/I GR I/I CP I/I CP I/I CP I/I CP I/I GR I/I GR I/I
QSTATUS NNNIN NNNNN NNNNI NNNII NNNIN NNNII NNNII NNNNN
LIMIT 7.0000 30.00 13.00 30.0 200.0 5.00
DATE 940701 940701 940701 940701 S 940701 940701 940701 940701

2
3
4
5
6
7
9
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
POTW NAME=
NPDES PERMIT #=
SAMPLE LOCATION.
CITY OF MOUNT AIRY WWTP
NC0021 121
PLANT EFFLUENT
BELOW DETECTION LIMIT DATA (60L) SHOULD BE MARKED AS "< AND THE DETECTION LIMIT", i.e. <0.002.
chi, ! Dt' l° I IJ f b/l, "- V)
r,) rd,
105
SAMPLE
FLOW
CADMIUM
CHROMIUM
COPPER
LEAD MERCURY
MOLYBDENUM
NICKEL SELENIUM
ZINC
BOD
TSS
CYANIDE
SILVER
0.0050
0.149
DATE
10.53-94
MGD
ARSENIC
L 0.0100
L 0.0020
< 0.0050
0.0050
0.1100
0.1480
0.0260 40.000201
0.0370 40.000200
0.1000
0.1000
0.0100
L. 0.0100
L 0.0100
< 0.0100
c 0.0100
0.1260_,
0.1630
0.0700
8.15
7.50
71.00
56.00
L 0.0100
0.0120
<
< 0.0050
0.208
11-17-94
.0 0.0100
t 0.0020
2.30
16.00
< 0.0100 .0
0.0050
1.000
12-8.94
4 0 0100 .4
0.0020
L 0.0040
0.0800
0.0100 1.0.000200
0.1000
0.0100
0 1210
670
30.00
< 0.0100
c 0.0050
0.908
5 00
1.18-95
k 0.0100
L 0.0020
C 0.0050
0.0900
0.0180 40.000200
0.1000
0.0100
C 0.0100
0.0320
8.25
20.00
4. 0.0100 ,<
0.0050 ,
L 0.0050
0.973
0.550
5.00
5.00
L 0.0020
< 0.0050
0.1630
0.0050 40.000200
0.1000
0.0100
4-7-95
7-13-95
4 0.0100
< 0.0100
4 0.0020
4. 0.0050
0.1030
0.0210 40.000200
0.1000
0
0.0100
G 0.0100
I. 0.0100
0.1080
0.1340
2.28 •
13.80
41.42
14.00
< 0 0100
t 0.0100 a
< 0.0050
0.1130
5.00_
0.0020
G 0.0050
0.1000
0.0140 40.000200
0.1000
0.0100
�L
G 0 0050
0.700
5.00
5.00
10-5-95
4. 0.0100
4-
< 0.0050
0.1260
0.0220 40.000200
0.1000
0.0100
0.0100
0.1580
2.29
10.00
4 0.0100
< 0.0050
0.150
1-25-96
0.0100
C 0.0100
.40.0020
< 0.0020
L 0.0050
0.1870
0.0390
40.000200
0.1000
0.0100
L 0.0100
0.1090
11.80
40.00
6.50
L 0.0100
L 0.0100
.
L 0.0050
-
0.100
.00
4-11-96
G 0.0100
.4 0.0020
.0 0.0050
0.1120
0.0470
40.000200
0.1000
0.0100
L. 0.0100
0.1020
2.37
5.00
4 0.0100
4. 0.0050 0.0050
4., 0.0050
0.415
7.10.96
1 U-3-96
L 0.0100
< 0.0020
0.0080
0.1090
0.0260 s
0.000200
000200
0 1000
0.1000
0
0.0100
0.0100
.4 0.0050
G 0.0100
0.1480
0.0650 '
2.20
4.40
10.00
4. 0.0100
5.00
5.00
1-28-97
4-8-97
4 0.0100
G 0.0100
L 0.0020
< 0.0020
0.0110
0.0080
0.1530
0.1060
0.0320
0.0160
40
<0.000200
0.1000
0.0100
G 0.0100
0.0640
4.06
10.00
< 0.0100
4 0.0050
0.564
< 0.0100
,
0.2940
1.10
40.00 `.<
0.0100
0
0.0060
c 0.0050
5.000
0.713
6.40
< 0.0100
0.0050
0.0710
0.2750
0.1110
4.0.000200
0.1000
0.0100
7-11-97
9-24-97
L 0.0100
A 0.0020
0.0060
0.1740
0.0340
60.000200
0.1000
0 0100
G 0.0100
0.1140
4.80
15.00
0.0100
L
713
8.70
0.0100
<- 0.0100
0.1280
1.00
12.00
0.0100
< 0.0100
L. 0.0050
< 0.0050
U
0.420
c 0.0100
C 0.0020
L 0.0050
0.1290
0.0360
0.1000
5.00
10-8-97
0.0020
4 0.0050
0.1290
0.0210
40.000200
0.1000
0.0100
4 0.0100
0.1130
2.00
17.00
4 0.0050
1.430
5.00
11-3-97
< 0.0100
4
0.0050
0.1420
0.0270
, 0.000200
0.1000
0.0100
4 0.0100
0.1050
10 60
30.00
4 0.0100
,
4 0.0050
0.799
00
12-3-97
4 0.0100
L 0.0020
C
0.0050
0.1160
0.0150
0.000200
0.1000
0.0100
.0 0.0050
0.0800
2.30
5.00
G 0.0100
0.0050
,
2.680
5.00-
1-22-98
� 0.0100
L 0.0020
G
0.0150
0.1820
0.0100
40.000200
0.1000
0.0100
< 0.0100
0.1190
10.30
78.00
4 0.010014..
0.0050
-
0.392
5.00
2-18-98
3-11-98
< 0.0100
.4 0.0100
L 0.0020
L 0.0020
•L 0.0050
40.000203
0.1000
0.0100
0.0100
0.1390
4.14
11.00
< 0.0100
L
5.00
0.1450
0.0290
,L
L 0.0100
0.1260
1 6.00
10.00
L 0.0100
0.0100
40.0050
L 0.0050
0.444
0.429
8.60
0.0100
t 0.0020
0.0050
0.1440
0.0270
<0.000200
0.1000
0.0100
4-7.98
.
.4
< 0.0100
< 0.0020
.4
0.0060
0.2120
0.0210
X0.000200
0 1000
0.0100
< 0.0100
0.1680
2.00
40.00
L
4
5.00
10.00
1 18.00
L 0.0100
.L 0.0100
L 0.0050
< 0.0050
0.528
0.731
5-19.98
6.10.98
t 0.0100
t 0.0020
< 0.0050
0.2570
0.0210
40.000200
0.1000
0.0100
L 0.0100
0.1510
3.18
5.00
5 00
7-15.98
8-12-98
< 0.0100
1- 0.0100
•40.0020
< 0.0020
0.0070
0.0060
0.2080
0.1640
0.0310
0.0150
<0.000200
40 000200
0.1000
0.1000
0.0100
0.0100
4 0 0100
0.1400
4.90
0.0100
L 0.0100
0.0850
2.10
10.00
, . 0.0100
4 L 0.0050
0.452
9-8-98
.4 0.0100
,( 0.0020
L 0.0050
0.1460
0.0100
k0.000200
0.1000
1
'
836.92
0.2720
0.1360
0.0050
20.937
0.805
123.700
5.378
TOTAL=
AVERAGE=
MAXIMUM=
MINIMUM=
0.0570
0.2270
4.0100
0.7210
0.005200
2 7007
0.2700
0.2600
3 2890
138.82
0.000
0.2700
0.0021
0.0084
0.1485
0.0267
0.000200
0.1000
0 0100
0.0096
0.1218
5.14
23.59
0.0101
0.0060
5.000
8 700
N01V/01
0.000
0.000
0.0100
0.0100
0.0050
0.0710
0.0040
0.2750
0.0800
0.1110
0.0050
0.000200
0.1000
0.0100
0 0100
0.2940
13 80
70 00
0.0120
5000
0.000200
0.1000
0.0100
0.0050
00320
1.00
5.00
0.0100
0.0050
0.100
0.0100
0.0020
BDL DATA USED FOR AVERAGES ARE ESTIMATED TO BE: (Le. 0, 1/2 DETECTION LIMIT, THE DETECTION UMIT)
�(I 1j,5PNIC. / / 4C/ ((JPV ik 32 lei UM
D441
bpi & Oa...) bi--14v°'j0d
0
0
0
G
0
r

1
2'
31
4.
5
6-
7
8
9
10
11
12
13
14
16
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
32
34
35
36
37
38
39
46
POTW NAME.
CITY OF MOUNT AIRY WWTP
NPDES PERMIT #.
NC0021121
SAMPLE LOCATION=
PLANT EFFLUENT
BELOW DETECTION LIMIT DATA (BM) SHOULD BE MARKED AS -< AND THE DETECTION LIMIT', I.e. <0.002.
SAMPLE
GATE
FLOW
MGD
ARSENIC
CADMIUM
CHROMIUM
COPPER
LEAD
MERCURY
MOLYBDENUM
NICKEL
SELENIUM
ZINC
BOO
TSS
CYANIDE
SILVER
AMMONIA
OIUGREASE
10-14-98
< 0.0100
< 0.0020
0.0160
0.2680
0.0220
< 0 000200
< 0.1000
<
0.0100
< 0 0100
0.1350
9.66
5.00
< 0.0100
< 0.0050
0.751
< 5.00
1-12-99
< 0 0100
< 0.0020
0.0130
0.1470
0.0480
< 0.003200
< 0.1000
0.0120
< 0.0100
0.1640
3.32
10.00
< 0.0050
< 0.0050
0.609
< 5.00
4.13.99
< 0.0100
< 0.0020
0.0060
0.2510
0.0270
?00030
0.1000
<
0.0100
< 0.0100
0.1310
2.00
2.00
< 0.0100
< 0.0050
0.479
< 5.00
7-22-99
< (1.0100
0 0020
0.0050
0.2100
0.0230
< 0.000200
< 0.1000
0 0310
c 0.0100
0.1410
5.00
8.00
< 0.0100
< 0.0050
0.854
< 5.00
T0TAL.
AVERAGE=
MAXIMUM=
MINIMUM=
0.000
0.0400
0.0080
0.0400
0.8760
0.1200
0.000900
0.4000
0.0630
0 0400
0.5710
19.98
25.00
0.0350
0.0200
2 493
20.000
1101V/01
0.0100
0.0020
0.0100
0 2190
0.0300
0.000225
0.1000
0.0158
0.0100
0.1428
5.00
6.25
0.0088
0.0050
0.623
5.000
0.000
0.0100
0.0020
0.0160
0.2680
0.0480
0.000300
0.1000
0.0310
0.0100
0.1840
9.88
10.00
0.0100
0.0050
0.751
5.000
0.000
00100
00020
0.0050
01470
0.0220
0.(XX1200
0.1000
00100
0.0100
0.1310
2.00
2.00
0.0050
0.0050
0.479
5.0(0
BDL DATA USED FOR AVERAGES ARE ESTIMATED TO BE: (Le. 0, 1/2 DETECTION LIMIT, THE DETECTION LIMIT)

837 yvO i3A.f0,0 0-4
r �
azosr ci.aFc rt+'A.°'«
2.?cf-n.
vA-4( 0-6,c 70 7. - F'
err: ,4t2 r
c_y
ao l,,,v? fc • 0
Cv 10 i• i� 1 r E,
Q,¢(-Y {w / ft" mei-f?.
r1
rr
u
tr
/1
fid"
LTM P
TOXICANT ANALYSIS
Facility Name
Mt. Airy WWTP
I
NPDES #
NC0021121
Qw (MGD)
7
7Q10s (cfs)
14.9
IWC (%)
42.14
c'ving Stream
Ararat River
Stream Class
C
FINAL RESULTS
Cd
Max. Pred Cw
2.4
ug/
Allowable Cw
4.7
ugl
Max. Value
2
Cr
Max. Pred Cw
127.6
ugl
Allowable Cw
118.7
ug/I
Max. Value
58
Ni
Max. Pred Cw
25.2
ug/
Allowable Cw
208.8
ug/
Max. Value
18
Pb
Max. Pred Cw
117
ug/
Allowable Cw
59.3
ug/
Max. Value
65`►
Cn
Max. Pred Cw
16.8
ug/
Allowable Cw
11.9
ug/
Max. Value
14
Hg
Max. Pred Cw
0.1
ug/
Allowable Cw
0.0
ug/
Max. Value
0.1
Cu
Max. Pred Cw
894.9
ug/
Allowable Cw
16.6
ug/
Max. Value
471
Zn
Max. Pred Cw
415.5
ug/
Allowable Cw
118.7
ug/
Max. Value
277i
Ag
Max. Pred Cw
15.3
ug/
Allowable Cw
0.1
ug/
Max. Value
%
Chloride
Max. Pred Cw
1241,000
ug/
Allowable Cw
SyfBS,?,S
ug/
Max. Value
i 73000',
7
- 96 i'iL 7.. ?
ycoi
�9 I30L
akittj PAtk�
UM if
Drf Pf€P 2
l.! /+1 l 1
Li:tii1l 1
4-I! 6 mac•• 13t�L
4 13a D✓b PPS n '
tAdrJ Vf P
Me rJ I Ta r`
1� v/1 i fog_
9/9/99
'PAGE 1

parameter =
Standard =
Cd
2
ug/1
Parameter= Cr
Standard = 50IpgA
Mt.Airy WWTP
July'98 - July '99 data
Parameter= Ni
Standard =
n BDL=1/2DLctual Data RESULTS n 3DL=1/2Dttual Data RESULTS
1 1 <2 Std Dev. 0.281263298 1 2.5 <5 Std Dev. 8.92289
2 1 <2 Mean 1.04375 2 2.5 <5 Mean 8.59615
3 1 <2 C.V. 0.269473818 3 2.5 <5 C.V. 1.03801
4 1 <2 4 7 7
5 1 <2 5 2.5<5
6 1 <2 Mult Facto{ 1.21 6 2.5 <5 Mutt Factor' 2.21
7 1 <2 Max. Value 2 pg/I 7 2.5 <5 Max. Value 58 pg/1
8 1 <2 Max. Pred i 2.4 pg/1 8 2.5 <5 Max. Pred ( 127.6 pgA
9 2 2' Allowable C 4.75 pg/1 9 7 7 Allowable C 118.66 pg/I
10 1 <2 10 2.5 <5
11 1 <2 11 2.5 <5
12 1 <2 12 2.5<5
13 1 <2 13 2.5 <5
14 2 2 14 2.5 <5
15 1 <2 15 5 5
16 1 <2 16 8 8
17 1 <2 17 15 15
18 1 <2 18 7 7
19 1 <2 19 12 12
20 1 <2 20 13 13
21 1 <2 21 10 10
22 1 <2 22 10 10
23 1 <2 23 13 13
24 1 <2 24 14 14
25 1 <2 25 8 8
26 1 <2 26 7 7
27 2 2 27 58 58
28 1 <2 28 8 8
29 1 <2 29 7 7
30 1 <2 30 5 5
31 1 <2 31 30 30
32 1 <2 32 7 7
33 1 <2 33 14 14
34 1 <2 34 11 11
35 1 <2 35 6 6
36 1 <2 36 5 <10
37 1 <2 37 2.5 <5
38 1 <2 38 9 9
39 1 <2 39 17 17
40 1 <2 40 5 <10
41 1 <2 41 7 7
42 1 <2 42 22 22
43 1 <2 43 8 8
44 1 <2 44 2.5 <5
45 1 <2 45 8 8
46 1 <2 46 6 6
47 1 <2 47 15 15
48 0.1 <0.2 48 12 12
49 49 2.5 <5
50 50 2.5 <5
51 51 6 6
52 52 5 5
53 53
54 54
9/9/99 NC0021121
881
Argil
Parameter = Pb
Standard =
251
ug/1
n 3DL=1/2DActual Dat RESULTS n BDL=1/2Dl\ctual Dar RESULTS
1 5 <10 Std Dev. 2.4949 1 5 <10 Std Dev. 10.6865
2 5 <10 Mean 5.6731 2 5 <10 Mean 13.7308
3 5 <10 C.V. 0.4398 3 10 10 C.V. 0.77829
4 5 <10 4 10 10
5 5<10 5 5<10
6 5 <10 Malt Facto 1.4 6 21 21 Mult Factor 1.81
7 5 <10 Max. Value 18 pg/1 7 32 32 Max. Value 65 pg/I
8 5 <10 Max. Pred ( 25.2 pg/I 8 10 10 Max. Pred ( 117 pg/I
9 5 <10 Allowable C 208.85 pg/l 9 20 20 Allowable C 59.33 pg/1
10 5 <10 10 35 35
11 5 <10 11 10 10
12 5 <10 12 18 18
13 5<10 13 5<10
14 5 <10 14 12 12
15 5 <10 15 22 22
16 5 <10 16 16 16
17 5 <10 17 13 13
18 5 <10 18 11 11
19 5 <10 19 23 23
20 5 <10 20 17 17
21 5 <10 21 11 11
22 5 <10 22 12 12
23 5 <10 23 5 <10
24 5 <10 24 27 27
25 5 <10 25 18 18
26 18 18 26 5 <10
27 11 11 27 65 65
28 5 <10 28 18 18
29 5 <10 29 36 36
30 5 <10 30 5 <10
31 5 <10 31 14 14
32 5 <10 32 16 16
33 5 <10 33 17 17
34 5 <10 34 15 15
35 5 <10 35 5 <10
36 5 <10 36 5 <10
37 5 <10 37 5 <10
38 5 <10 38 15 15
39 5 <10 39 12 12
40 5 <10 40 5 <10
41 5 <10 41 5 <10
42 5 5 42 11 11
43 11 11 43 14 14
44 5 <10 44 5 <10
45 5 <10 45 5 <10
46 5 <10 46 5 <10
47 5 <10 47 12 12
48 15 15 48 11 11
49 5 <10 49 5 <10
50 5<10 50 5<10
51 5 <10 51 11 11
52 5 <10 52 14 14
53 53
54 54

Hrameter= Cn
Standard =
1 51
pg/1
n 3DL=1 /2D \ctual Data RESULTS
Parameter = Hg
Standard =
I 0.0121
pgtl
n3DL=1/2DActual Data RESULTS
1 5 <10 Std Dev. 1.2481 1 0.1 <0.2 Std Dev. 4E-09
2 5 <10 Mean 5.1731 2 0.1 <0.2 Mean 0.1 2
3 5 <10 C.V. 0.2413 3 0.1 <0.2 C.V. 4E-08 3
4 5 <10 4 0.1 <0.2 4
5 5<10 5 0.1 <0.2 5
6 5 <10 Mult Factor' 1.21 6 0.1 <0.2 Mult Facto 11 6
7 5 <10 Max. Value 14 pg4 7 0.1 <0.2 Max. Value 0.1 pg/1 7
8 5 <10 Max. Pred . 16.8 09/1 8 0.1 <0.2 Max. Pred 1 0.1 pg/1 8
9 5 <10 Allowable ( 11.87 pg/ 9 0.1 <0.2 Allowable C 0.03 pg/1 9
10 5 <10 10 0.1 <0.2 10
11 5 <10 11 0.1 <0.2 11
12 5 <10 12 0.1 <0.2 12
13 5 <10 13 0.1 <0.2 13
14 5 <10 14 0.1 <0.2 14
15 5 <10 15 0.1 <0.2 15
16 5 <10 16 0.1 <0.2 16
17 14 14 ' 17 0.1 <0.2 17
18 5 <10 18 0.1 <0.2 18
19 5 <10 19 0.1 <0.2 19
20 5 <10 20 0.1 <0.2 20
21 5<10 21 0.1 <0.2 21
22 5 <10 22 0.1 <0.2 22
23 5 <10 23 0.1 <0.2 23
24 5 <10 24 0.1 <0.2 24
25 5 <10 25 0.1 <0.2 25
26 5 <10 26 0.1 <0.2 26
27 5 <10 27 0.1 <0.2 27
28 5 <10 28 0.1 <0.2 28
29 5 <10 29 0.1 <0.2 29
30 5 <10 30 0.1 <0.2 30
31 5 <10 31 0.1 <0.2 31
32 5 <10 32 0.1 <0.2 32
33 5 <10 33 0.1 <0.2 33
34 5 <10 34 0.1 <0.2 34
35 5 <10 35 0.1 <0.2 35
36 5 <10 36 0.1 <0.2 36
37 5 <10 37 0.1 <0.2 37
38 5 <10 38 0.1 <0.2 38
39 5 <10 39 0.1 <0.2 39
40 5 <10 40 0.1 <0.2 40
41 5 <10 41 0.1 <0.2 41
42 5 <10 42 0.1 <0.2 42
43 5 <10 43 0.1 <0.2 43
44 5 <10 44 0.1 <0.2 44
45 5 <10 45 0.1 <0.2 45
46 5 <10 46 0.1 <0.2 46
47 5 <10 47 0.1 <0.2 47
48 5 <10 48 0.1 <0.2 48
49 5 <10 49 0.1 <0.2 49
50 5 <10 50 0.1 <0.2 50
51 5 <10 51 0.1 <0.2 51
52 5 <10 52 0.1 <0.2 52
53 53 53
54 54 54
Mt.Airy WWTP
July'98 - July '99 data
9/9/99 NC0021121
Parameter= Cu
Standard =
71
p94
n3DL=1/2DActual Data RESULTS
1 100 100 Std Dev. 90.375
158 158 Mean 165.02
135 135 C.V. 0.54766
155 155
147 147
140 140 Mutt Faclo11 1.9]
178 178 Max. Value 471 pg/l
78 78 Max. Pred I 894.9 pgll
211 211 Allowable C 16.61 pg/1
111 111
84 84
216 216
91 91
471 471
176 176
192 192
151 151
229 229
2.5 <5
317 317
244 244
119 119
184 184
96 96
140 140
Parameter= Zn
Standard =
501
pgA
n BDL=1/2DL\ctual Data RESULTS
1 146 146 Std Dev. 47.191
2 120 120 Mean 131.33
3 185 185 C.V. 0.3593
4 113 113
5 124 124
6 116 116 Mutt Facto
7 132 132 Max. Value
8 95 95 Max. Pred 1
9 132 132 Allowable C
10 89 89
11 277 277
12 134 134
13 237 237.
14 161 161
15 132 132
16 143 143
17 129 129
18 118 118
19 88 88
20 123 123
21 124 124
22 71 71
23 87 87
24 76 76
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
277 pg/I
415.5 pg4
118.66 pg/1
Parameter=
Standard =

Ag
Mt.Airy WWTP
July '98 - July '99 data
Parameter Chloride P
0.061pg/1 Standard = I 250000I/41
3DL=1/2D>ctual Data RESULTS
2.5 <5 Std Dev. 1.3268
2.5 <5 Mean 2.7708
<5 C.V. 0.4788
<5
<5
<5 Mult Factor' 1.71
<5 Max. Value 9 pg11
<5 Max. Pred t 15.3 pg!
<5 Allowable C 0.14 pg/I
<5
<5
<5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
9 9
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
2.5 <5
n 3DL=1/2DPctual Data RESULTS
1 340000 340000 Std Dev. 179516.372
2 450000 450000 Mean 440206.087
3 626000 626000 C.V. 0.40780075
4 612000 612000
5 574000 574000
6 3740 3740 Mult Facto 1.71
7 136000 136000 Max. Value 730000 pg/1
8 379000 379000 Max. Pred t 1241000 rig/1
9 422000 422000 Allowable C 593317.97 pg/1
10 359000 359000
11 472000 472000
12 128000 128000
13 522000 522000
14 512000 512000
15 241000 241000
16 423000 423000
17 598000 598000
18 524000 524000
19 540000 540000
20 730000 730000
21 367000 367000
22 604000 604000
23 562000 562000
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
9/9/99 NC0021121

LONG TERM MONITORING PLAN REQUEST FORM (for Pretreatment)
FACILITY:
31,401acesaAritill?_. Pi_ 0 iti-± 4-t
NPDES NO.: NCOO248- 2..j !
EXPIRATION DATE:
REGION:
P&E REQUESTOR: isAictuoettlyeterMS
PRETREATMENT CONTACT: Leo
WS
DATE OF REQUEST:
sv egionalOffice
A6-14,4
INDICATE THE STATUS OF PRETREATMENT PROGRAM:
1) THE FACILITY HAS NO SIU'S AND SHOULD NOT HAVE PRETREATMENT LANGUAGE.
THE FACIUTY HAS A PREATREATMENT PROGRAM.
3) ADDITIONAL CONDITIONS REGARDING THE PRETREATMENT PROGRAM ATTACHED.
PERMITTED FLOW:
% INDUSTRIAL -1-0 — Ftd
% DOMESTIC 30 — 2d
t'ftv\P P0C5.
at) , CA) CA, 44-
;
60v, "rss � n Ei3
ailinAit\a/3 CK- T,A^61
ha 51 .li"r� — o I P
dU..e. 1-z 1.-to cP2 56 3 s veys
'rowh vow rw43 sje
i&o-1/ ) 56 6Hct.9 rCwO✓C'd IaJer

GKEX88/MP
10/08/1999
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 1
PERMIT--NC0005703 PIPE--001 REPORT PERIOD: 9809-9908 LOC---E
FACILITY--HAMILTON BEACH/PROCTOR SILEX DESIGN FLOW-- n'"_J CLASS--4
LOCATION --MOUNT AIRY REGION/COUNTY--04 SURRY
50050 00530 TGP3B 00010 00400 00556 00600 00665
MONTH Q/MGD RES/TSS CERI7DPF TEMP PH OIL-GRSE TOTAL N PHOS-TOT
LIMIT F .0850 F 31.0 NOL NOL 9.0 6.0 F 26.000 NOL NOL
98/09 .0758 14.5 1 25.23 8.7-6.6 .000 1.850 .1280
98/10 .0753 5.0 22.09 9.0-6.3 .000
98/11 .0784 .0 21.89 8.8-6.5 .000
96i1.% .0777 5.0 2 20.60 8.3-6.5 .000 5.490 1.4100
99/01 .0747 1.6 2 21.70 8.5-6.6 .000
99/02 .0732 .0 1 21.90 8.8-6.5 .000
99/03 .0785 .0 1 22.56 8.8-6.6 .000 2.190 .9890
99/04 .0791 7.3 22.87 8.5-6.8 .000
99/05 .0797 6.0 23.00 8.6-6.3 .000
99/06 .0771 .0 1 23.10 8.8-6.8 .000 1.400 1.2600
99/07 .0710 11.0 22.66 8.4-6.7 .583
99/08 .0708 .0 22.90 8.8-6.6 3.234
AVERAGE .0759 4.2 1 22.54 .318 2.732 .9467
MAXIMUM .0820 22.0 2 26.00 9.000 10.700 5.490 1.4100
MINIMUM .0700 5.0 1 20.00 6.300 1.400 .1280
UNIT MGD MG/L PASS/FAI DEG.0 SU MG/L MG/L MG/L
i+8
1�
pow r `6.
(Q
tyf 0.6 q0 m 5
M
m67 x .3y x o, 6?6s y /Q
ytL [At . Cr 564)
L b'�,� ,a ( 9
<<
336 / 1.466
6,30a / 2,7 Yea•

3KEX88/MP 10/08/1999
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 2
PERMIT--NC0005703 PIPE--001 REPORT PERIOD: 9809-9908 LOC---E
FACILITY--HAMILTON BEACH/PROCTOR SILEX DESIGN FLOW-- .0850 CLASS--4
LOCATION --MOUNT AIRY LEGION/COUNTY--04 SURRY
00720 00940 00951 01027 01034 01042 01045 01051
MONTH CYANIDE CHLORIDE FLUORIDE CADMIUM CHROMIUM COPPER IRON LEAD
LIMIT NOL NOL F 1.7100 F 2.0700 NOL F .4300
98/09 .0000 11.30 1.150 .0000 .8285 .1790 .1980 .0270
98/10 1.715 1.2614 .0830
38/11 1.100 .8945 .0960
98/12 .0000 3.34 2.540 .0010 .9300 .0330 .0330 .0060
99/01 .6852 .0420
99/02 2.890 .4042 .0660
99/03 .0000 18.90 1.000 .0000 .3517 .0970 .3700 .0080
99/04 1.000 .5860 .4200
99/05 6.500 .3762 .1390
99/06 .0000 17.00 1.270 .0000 .6642 .0580 .1380 .0000
99/07 1.310 .8900 .0820
99/06 .733 .4865 .0570
AVERAGE .0000 12.63 1.928 .0002 .6965 .0917 .1436 .0102
MAXIMUM 18.90 6.500 .0010 1.9600 .1790 .4200 .0270
MINIMUM 3.34 .733 .0010 .1100 .0330 .0330 .0060
UNIT LbS/UAY MG/L MG/L LBS/DAY MG/L MG/L MG/L MG/L

GKEX88/MP 10/08/1999
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 3
PERMIT--N00005703 PIPE--001 REPORT PERIOD: 9809-9908 LOC---E
FACILITY --HA' -:TON BEACH/PROCTOR SILEX DESIGN FLOW-- .0850 CLASS--4
LOCATION--Mi.,JNT AIRY REGION/COUNTY--04 SURRY
01067 01077 01092 01105 78141
MONTH NICKEL SILVER ZINC ALUMINUM TTO
LIMIT F 2.3800 F .2400 F-1.4800 NOL
98/09 .8257 .0000 .0190 .3540
98/10 1.3848 .0000
98/11 1.9075 .1075
98/12 .7245 .0000 .0000 .4060
99/01 .6230 .0000
99/02 .3760 .0160
99/03 .5057 .0000 .0545 .5600
99/04 .3335 .0280
99/05 .2235 .0000
99/06 .2245 .0000 .0160 .1570
99/07 .8526 .0000
99/08 .2015 .0000
AVERAGE .6819 .0000 .0200 .3692
M7AXIMUM 3.7000 .1510 .5600
MINIMUM .1110 .0120 .1570
UNIT MG/L ML/L MG/L MG/L MG/L

GKEX88/MP 10/08/1999
PAGE 1
COMPLIANCE EVALUATION ANALYSIS REPORT
PERMIT--NC0005703
r'"-ILITY--HAMILTON BEACH/
1,OCATION--MOUNT AIRY
REPORT PERIOD: 9809-9908 LOC---E
DESIGN FLOW-- .0850 CLASS--4
R ON/COUNTY--04 SURRY
50050 50060 00010 00400
MONTH Q/MGD CHLORINE TEMP PH
LIMIT NOL
98/09 .0020
NOL
98/10 .0020
98/11 .0020
98/12 .0020
99/01 .0020
99/02 .0020
99/03 .0020
99/04 .0020
99/05 .0020
99/06 .0020
99/07 .0020
99/08 .0020
AVERAGE .0020
MAXIMUM .0020
MINIMUM .0020
UNIT MGD MU/L
NOL 9.0 6.0
39.00 8.0-8.0
38.00 8.4-8.4
39.00 8.6-8.6
38.00 7.9-7.9
36.00 7.6-7.6
39.00 8.4-8.4
37.00 8.1-8.1
36.00 7.9-7.9
36.60 7.6-7.6
35.00 7.9-7.9
36.00 8.0-8.0
35.00 7.7-7.7
37.05
39.00 8.600
35.00 7.600
DEG.0 SU
=stir .s_

GKEX88/MP 10/08/1999
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 1
PERMIT--NC0005703
FACILITY--HAMILTON BEACH/P
LOCATION --MOUNT AIRY
REPORT PERIOD: 9809-9908 LOC---E
DESIGN FLOW-- .0850 CLASS--4
ON/COUNTY--04 SURRY
50050 50060 00010 00400
MONTH Q/MGD CHLORINE TEMP PH
LIMIT NOL NOL 9.0 6.0
98/09 .0010 13.10 6.9-6.9
LIMIT NOL NOL NOL 9.0 6.0
98/10 .0010 12.60 6.8-6.8
98/11 .0010
98/12 .0010
99/01 .0010
99/02 .0010
99/03 .0010
99/04 .0010
33/Z,5 .0010
99/06 .0010
99/07 .0010
99/08 .0010
12.00 6.3-6.3
11.50 6.8-6.8
10.00 7.1-7.1
10.30 7.9-7.9
10.60 7.7-7.7
12.10 7.9-7.9
12.90 7.5-7.5
13.90 8.1-8.1
12.20 7.9-7.9
12.50 7.4-7.4
AVERAGE .0010 11.97
MAXIMUM .0010 13.90 8.100
MINIMUM .0010 10.00 6.300
UNIT MGD MG/L DEG.0 SU
ceo-2f-s
v,iefArd-otAn'\-'

NPDES FACILITY AND PERMIT DATA 10/08/99 11:21:26
RETRIEVE OPTION TRXID 6NU KEY NC0005703
PERSONAL DATA FACILITY APPLYING FOR PERMIT REGION
FACILITY NAME> HAMILTON BEACH/PROCTOR SILEX COUNTY> SURRY 04
ADDRESS: - MAILING (REQUIRED) LOCATI'..'(REQUIRED)
STREET: 4421 WATERFRONT DRIVE STREET: 561 HAY STREET
CITY: GLEN ALLEN ST VA ZIP 23060 CITY: MOUNT AIRY ST NC ZIP 23060
TELEPHONE [phone]
STATE CONTACT> MCINTIRE
1=PROPOSED,2=EXIST,3=CLOSED
LAT: 3630360 LONG: 08037170
DATE APP RCVD 12/21/98
DATE STAFF REP REQS / /
DATE STAFF REP RCVD / /
DATE TO P NOTICE / /
DATE OT AG COM REQS / /
DATE OT AG COM RCVD / /
DATE FEE PAID: 12/21/98 AMOUNT: 200.00
PERSON IN CHARGE MARIO KUHAR
2 1=MAJOR,2=MINOR 1 1=MUN,2=NON7MUN 2
N=NEW,M=MODIFICATION, R=REISSUE> R
WASTELOAD REQS / /
WASTELOAD RCVD / /
SCH TO ISSUE / /
DATE DRAFT PREPARED / /
DATE DENIED / /
DATE RETURNED / /
DATE TO EPA / / DATE ISSUED / /
DATE FROM EPA / / EXPIRATION DATE 06/30/99
FEE CODE ( 4 ) 1=(>10MGD),2=(>1MGD),3=(>0.1MGD),4=(<0.1MGD),5=SF,6=(GP25,64,79),
7= (GP49, 73) 8= (GP76) 9= (GP13, 3a " "" - (NOFEE) DIS/C 557 59 17 CONPTTJ, ( )
COMMENTS: SITE PHONE# [phone]/FAX# [phone]
MESSAGE:
ASSIGN/CHANGE PERMIT
41:
06 b0,dA4&ur)--
3 c9-oeki;5 t1J\ LL/AJ74/Arl-JJ

NPDES FACILITY AND PERMIT DATA 10/08/99 11:21:09
RETRIEVE OPTION TRXID 6NU KEY NCG030115
?ERSONAL DATA FACILITY APPLYING FOR PERMIT REGION
FACILITY NAME> HAMILTON BEACH/PROCTOR-SILEX COUNTY> SURRY 04
ADDRESS:. MAILING (REQUIRED) LOCATION (REQUIRED)
STREET: 4421 WATERFRONT DRIVE STREET: 561 HAY STREET
CITY: GLEN ALLEN ST VA ZIP 23060 CITY: MOUNT AIRY ST NC ZIP 27030
TELEPHONE [phone] DATE FEE PAID: 05/23/97 AMOUNT: 400.00
STATE CONTACT PERSON IN CHARGE MARIO KUHAR
1=PROPOSED,2=EXI ,=CLOSED 1 1=MAJOR,2=MINOR 2 1=MUN,2=NON-MUN 2
LAT: LONG: N=NEW,M=MODIFICATION, R=REISSUE> R
)ATE APP RCVD 05/23/97 WASTELOAD REQS / /
)ATE STAFF REP REQS / / WASTELOAD RCVD / /
)ATE STAFF REP RCVD / / SCH TO ISSUE / /
)ATE TO P NOTICE / / DATE DRAFT PREPARED / /
)ATE OT AG COM REQS / / DATE DENIED / /
)ATE OT AG COM RCVD / / DATE RETURNED / /
)ATE TO EPA / / DATE ISSUED 10/02/97 ASSIGN/CHANGE PERMIT
)ATE FROM EPA / / EXPIRATION DATE 38/31i02
'EE CODE ( 0 ) 1=(>10MGD),2=(>1MGD),3=(>0.1MGD),4=(<0.1MGD),5=SF,6=(GP25,64,79),
7=(GP49,73)8=(GP76)9=(GP13,34,30,52)0=(NOFEE) DIS/C 73 CONBILL ( )
'.OMMENTS: SAMPLING DATA ARRIVED 3/6/96. FAX [phone] [e-mail]
IESSAGE:
5 v r o ics "e k

�•tlr: crP r ..r vnsr nr.
.. t,iu, AfAV !!tnl - 1111Pass
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• Pass ••• - • Pass "'
Pase Pass
l Il. V 1995 -•• Pass Pass - Pale
!Note County W \VTP PERM CDR MLIar: Ju41n
S Pass Pass Pass NunCow SINGLE 1998 "" Pass Pau Pass
County: 0oore Begina/1/19R FreROocy:Q bb + MarlunScpDec P' 1997 __ Pass
Region: FRO Sut+basitr: LUh150 1998 Pass Pass County: Moore g Pass
Special 1999 -••� Pass Pasa
7Q 6.7 Pass 7QI0:15.2 IWC(91.):40.54 Fan Fail Fall Peas Pass
••.
Y 1995 Pass Pass
PERM CI IR LIM: 90'k -_- ... Pass Pass Pass
•,•
M1lNC00467 8 01 P. 1990 --• Pass Pass '
Pass Pass
CC00y6728/W1 BeginaIl1/1R9g Freyuoney:Q bb + FebMuyAugNov NonCtim SINGLE 1997 -•• --- .-• Pass
Pass Pass
Cowry: Iredell Region: MRO Subbasin: YAD11 1998 •- Pass
Specie' - 1999 - Pass Pass '-
7PF:Q 5.2 Pass 7Q10: 0.5 IWC('k).94.15 .. _._ Pass Pass
1 �995 - Pass Pass Fab
PERM2411R AC P/F LIM: 90% MYSIU Pass --- Fail,Pass __ Fail
forehead 11 \V1YTPNonCon SINGLE 1996 --- Pass Pass
+ FebMay Aug Nov W� pass >tN0 Fail Pap Pass
County: Carteret
Bcgin:5/1/1993 F[equency:Q Y 1997 "' ,_ Pass
County: Canert Region: WlRO Subbasin: WOK03 1998 Fail Pass -.• Pass Special 1999 ... Pass ... Pass
7PF:Q 1.7 Pin! 7QI0: TIDAL IWC(`k):NA NFUPasa Peas
ifpf 10.5 chr line 12%; if pf 13 chr lint 15% 1995 Pass .•- ... Pass -..
Pass Pass Pass
MNC0026573 lvba gIv Il1I995 Fad! PenticlvIbu:99F; NonCNIn Sin le. 1996 Pass Pall Pass _..
ue11c P/F + Jan Apr Jul Oct P: S Fail,Pess
CCounty: 73/ODl Degin2/1/1995 Frey Y Q1997 Pass Pass Pass PF- 8.0 Bwke Region: ARO Subbastn;Cf631 1998 Pass
Spxid 26573 !'ass ... "' ..•
PF: 8.0 1999 Pass Pass Fail,Paas
I WC( u):8.96 Fail
7 AI 126 V 1995 Pass -•- Peas ... Pass
Pass - - I'ep --• Pass
...
1h. Airy Ill 0 Pone chr liar: an A NonCuur Siuyk 1998 Fab Pass Pau --- •_.
Fall Pass Pass
CC00y: Surry l Degin:711/19Rc Frequency: Q P,l, + Jan Apr Jul Oct p" 1997 Pass _. Pap
Region: WSRO Subhasiu: YAD03 1998 Fall Pass Pass Cowry: Surty Pass --_
Special 1999 Past rasa
PF:0 0.0 Pass --- Pass .--
7Q Gilead
IWC(%):42.0 - Fail Fail Pass Vass
Fad Fall Late Pass Kass
PERM CIIR LIM: 69'iL; IF RGLOC'1'O PEG UEECIIIt LIM 3. 1995 Pass ••• '""
MN Gilead 5/001 199E Pass L- Pass
NunCom SINGLE '"" Pass ••• "' ._- ... Pass
Nounty: 0ontg Begina 1/1l1 Re Frcyuency:Q P/F + Mar Jun Sep Dec P' 1997 -•- Fadale Pass Pass,Pasa
Region: FRO Subbasin: YAD08 1998 •„ Fall Lela Fail
County: Montgomery Spass
PF:0.85 Special 1999 ... --- BI ..
Pans NFVPaas
7Qt. 0.6 IWC(%):69 1995 - Pess Pass Pass
\V\V7'P Pam chr li1n: 6'k Pass : - Pass
hiNC00Holly996 NWPasa Pass •-- •.. Pass -•
Pass Pass Pass Pass
CC00y: G6l001 Degin:9/1/19Frequency: Q P/F55 + Feb May Aug NovNuv NottCurlrp:SitrSle 1997 Pass -•• -•• Pale
Region: Subhasin:CfD}} 1998 --- Pass ••-
County: Gaston •-_ Pass
Special Pass ... Fail
7Q 4.0 ... Fact ...
Mt.
95.0 IWC(9a):6.0 ,-. Fail ••• Fail 88d
Y 1995 Fa ... 17.88 35.38
M1it. Olive Pickle P-2 perm chr nnmit (I(J0.75, 50,25, 12.5, 6.25) 35 35 ••• t zce Bed ••
x Jul Oct • NunColup: 1996 -•• ... 171.
Frequency: Jun AI 1997 B.Dd 17.fi7 --- 8 81
CComity: 7aylie Begiu:2ll1t996 Frcy Y Q 8.83
PE; 0.40 Wayne Region: WARO Subliasiu: CPP21 1998 17,08 •.• F93n •.• r
PF: Special 1999 35./ PO" Pas*
7Q10: 0.0 IWC(%):100 Pass --• Pass Late Pep f etc•
1995 -- Late Pena Pate Pas..
Pcnuclvlhn:90`k Fail Pass •-- _ Lets fail Pass MN 002 WWTP 1996 •-• •_ Pass Pas,
P/F + Mar Jun SepDee NouCmnp:Singla 1997 •• Pass Fad Fail.l'aB >100
Pass
PF: 1.05751001 Degin:9/1/1996 Frequency: 1Pass County: Wayne Region: WARO Subbaain:CPFZI 1998 - Pass
Special LAIN Pass ..-
7Q 1.0 1999 ' Pass
1 WC(')6):100 pass -_-
7Q10: 0.0 Pass •.• H
1985 Fail Pass FaILF'ass
ILPisgah Lodge/Recreation Area Penn chr Fun: 25% - ._. _, •' Fad Pass(s) H
Frequency: P/F + Feb May Aug Nov NutlColn :Sin le t998 Fail J Pass
P 8 1997 ••. Failassls)
NC0072729/U01 Degin:l2/1/1996 Frcq Y:Q 11 --, Pass Fail Pasa(s)
County: Haywood Region: ARO Subbasin: FRDOS 1998 --- Pass
Special rli4'll ti Late
PF: 0.032 1999 ••• Pass --- ^.
7Q10: 0.15 IWC( ):25 Pass Pass ... Late ... Pass --
... Pass -.- '.. Fail F. Pass Pass
... Fail Fail
Pass •'- ... Pass
Pass -�• ••• Pass -•-
Pasaf
Pass ..
1995
Murphy WWTP Penn du luu: 1.5'k 1995 ,..
NC0020940/00I Begin:3/1/1998 Frequency: Q l'/F + Mar Jun Sep Dec + NunCump:Single
89
Courtly: Cherokee Region: ARO Subbasin7 -
:111W02 1997 -•-
1'1':0.925 Special 199E --.
7Q10: 96.9 IWC(%):1.5
V Pre 1995 Data Available discharging; D(yromi.
LEGEND: =frequency: Q. Q Ning; D- =
7 Permit Requirement LbT= Administrative Leifer •Target FrequencyM1u1lnncdy uxmonitoring increasestomonthly Idylutjxull(mure orD1NItnllMun u tlral testing mA- ust - Only
Oct
N diuhar iu
PERMBeginsnl_ = ncutc faiIu nnmle."_
Begin = ruts monthrequired IWC%7010 =Receiving WA983 low ntra cn¢rimt (cfs) P/I• = I-ass/ran test-
D a Notation:
flow llse ow;• e: I odaptre= waste concentration MysidOn
sp.; Y6 8 by
,u.., ......,ed Facility Activity Status: I - Inactive, N -Newly Issued! I'u construct); H -Active but Zwt discharging; j•Morc data available for month in question; - .-
Dam Notation: f - Fathead Minnow; • • Ceri«fapllniam shrimp: ChV - Chronic value; P P. Mortality of stated PcrcentN'e of highest wncenu atiun; et - Performed DWQ Aquatic Tux Unit; 1- Bad c
3

4
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3 70 .00
P.O. Box 70 4/0W4
Mount Airy, N.C. 27030
Phone: [phone]
Fax: [phone]
December 16, 1998
Mr. Charles H. Weaver, Jr.
NC DENR/DWQ/NPDES
P.O. Box 29535
Raleigh, N.C. 27626-0535
Re: NPDES Permit NC 0021121 Renewal
Dear Mr. Weaver,
City of Mount Airy is requesting renewal of NPDES Permit NC 0021121 that
r` " ne 30, 1999. Enclosed please find the original application forms along
VtilVi•pies. The forms include the application, sludge management plan and a
•fetter from our City Manager requesting that I be the duly authorized
etive for the City of Mount Airy Wastewater Treatment Plant. If you have
testidns or require further information, please contact me at 336-786-3597.
Kent Scott
WWTP ORC

CITY OF MOUNT AIRY WASTEWATER TREATMENT PLANT
NARRATIVE OF THE SLUDGE MANAGEMENT PLAN
The City has two anaerobic sludge digesters that hold 650,000 gallons of sludge each.
The sludge is held in the digesters from 30 to 60 days at 98° F, after the appropriate
digestion time the sludge is then pressed to achieve a cake of approximately 20% solids.
After pressing, the sludge is stored on a 100 x 100 foot concrete pad until land applied.
The City of Mount Airy WWTP currently has 522 acres of land permitted for land
application of sludge. We also have a contract with Environmental Waste Recycling of
Advance, N.C. for hauling and applying sludge, along with all report writing. Our current
Land Application Permit # WQ0000956 expires December 31, 2003.

CITY OF MOUNT AIRY
P.O. Box 70
Mount Airy, N.C. 27030
Mr. M. Steven Mauney
Water Quality Supervisor
585 Waughtown Street
Winston-Salem, N.C. 27107-2241
Dear Mr. Mauney:
According to the City of Mount Airy's NPDES Permit, # NC 0021121 Part II,
Section B, 11 a, b and c, that I Matt Bernhardt being the principal executive officer of the
City of Mount Airy may request a duly authorized representative sign all applications,
reports or information submitted to the Permit Issuing Authority in my place. Therefore I
request that Kent Scott; ORC of the City's Wastewater Treatment Plant who is
responsible for all operations of the plant be designated the duly authorized representative
for the City of Mount Airy.
If you have any questions regarding this request please contact me at 910-786-
3503 or Mr. Scott at 910-786-3597.
truly,
M • : ernhardt
City Manager

r
1-MJKL 1-1-2
LOT SCALC 111 CA0 FILE = H;\DRAVANo&\MI75\FIOURto\,lbr4=bit by %tl
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RAW SEWAGE
DIGESTER BUILDING
DIGESTER NO. 1
HEAT
EXCHANGER
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DIGESTER BFP FEED
MIXING PUMPS
1DIGESTER NO. 2
PUMPS
RECIRCULATION
PUMP
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SLUDGE
GRIT
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PARSHALL
FLUME
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SLIDE GATE
THICKENED
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00004.44.1.111.4
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TRICKLING FILTER NO. 1
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5
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7
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FINAL CLARIFIER EFFLUENT
LEGEND
PLANT FLOW
BYPASS FLOW
SLUDGE AND SCUM
NPW PUMPS
CHLORINE
CONTACT
TANKS
PLANT
EFFLUENT
ARARAT RIVER
MOUNT AIRY
WASTEWATER TREATMENT- PLANT
PROCESS FLOW
_ SCHEMATIC

City of Mount Airy
P.O. Box 70
Mount Airy, N.C. 27030
Phone: [phone]
Fax: [phone]
Fax
To: Charles Weaver
City of Mount Airy
From: Kent Scott
Date: December 2, 1998
Pages: 1, including this cover sheet
Re: NPDES Permit Renewal CC:
0 Urgent For Review
0 Please Comment ❑ Please Reply 0 Please Recycle
•Comments:
Mr. Weaver.
I checked with City Hall and they must have misplaced our NPDES renewal packet. If
possible could you, please forward a copy of the materials to me at the below address. I
apologize for any inconvenience that this may have caused.
City of Mt Airy
P.O. Box 70
Mount Airy, N.C. 27030
ATTN: Kent Scott
Thank -you,
Kent Scott
WtNTP Supervisor
Phone: [phone]
Fax: [phone]
Email: kents,advi.net
9e4i— /2 -2-7

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Jeffrey M. Boyles
Town of Mount Airy
P.O. Box 70
Mount Airy, NC 27030
Dear Permittee:
kir; A
=00.m•'"%misl
NC DENR
June 1, 1998
Subject: Implementation of Yadkin Pee -Dee River Basin Association
NPDES Permit Modification for Instream Sampling
NPDES Permit NC0021121
Surry County
As a participant in the coordinated instream monitoring efforts within the Yadkin -Pee Dee River basin,
your facility and the North Carolina Department of Environment and Natural Resources (DENR) have
entered into an agreement that provides both parties with an effective environmental monitoring tool. By
this letter, the DENR is waiving the instream monitoring requirements as specified within your individual
NPDES permit beginning June 1, 1998. As specified in the Memorandum of Agreement (MOA) signed by
this agency and you (or your representative), the agreement identifies the stations, parametric coverage
and frequency of analysis required in order that the instream monitoring requirements be waived for your
facility.
All other terms and conditions in the original permit remain unchanged and in full effect. These
modifications are 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 December 6, 1983. Should your membership in the agreement be terminated, the instream
monitoring requirements specified in your permit will be reinstated. You shall notify the Division
immediately upon termination of membership.
I would like to express my appreciation for the cooperation and participation of all participants in this
innovative approach to environmental monitoring. It is expected that the results of the agreement will
effectively contribute to our understanding of the Yadkin -Pee Dee River basin environment. We have
designated Cathy Tyndall as our primary contact for issues related to the MOA. She can be reached at
[phone].
We also look forward to the advances that this cooperative agreement will provide in our management of
the Yadkin -Pee Dee River basin and ask that you feel free to contact us should any questions arise
regarding the monitoring efforts or interpretations of the information collected. We will be maintaining
our own series of monitoring stations in the basin which, when added to the information collected by this
agreement, will greatly expand our knowledge of this environmental system. We thank you again for your
participation and look forward to a successful monitoring effort.
Sincerely,
Preston Howard, . r., P.
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
Susan Wilson, Point Source Compliance Enforcement Unit
Cathy Tyndall, Environmental Sciences Branch
NPDES Unit Files
P.O. Box 29535, Raleigh, North Carolina 27626-0535 919 733-5083, extension 511 (fax) 919 733-0719
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

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Memorandum
North Carolina Division of Water Quality
Instream Assessment Unit
To: Steve Mauney
From: Andrew McDaniel /PM
Through: Carla Sanderson CA'
Ruth Swanek S
Date: March 12, 1996
Subject: Instream dissolved oxygen standard violations
Mt. Airy WWTP (NC0021121)
Ararat River/Yadkin River Basin
Surry County
As part of my review of the available physical/chemical water quality data in the
Yadkin River basin I've come across some unexpected instream dissolved oxygen (DO)
violations reported in the City of Mt. Airy's DMRs during the period 1994 through 1996.
Mt. Airy, which has a permit to discharge 7.0 MGD of treated effluent into the Ararat
River, comprises 42% of the flow dui-ng 7Q10 conditions. Although the instream waste
concentration is high enough to affect instream DO levels, the repeated DO violations are
somewhat surprising considering that ambient station data and data collected by Pilot
Mountain indicate relatively high DO concentrations in the Ararat. Pilot Mountain has not
reported any DO violations since it relocated its discharge to the Ararat River in July 1996.
The two ambient monitoring stations located on the Ararat have not recorded a DO violation
in the last five years.
On March 5, 1997 I contacted Mike Mickey to see if he could offer a possible
explanation for the violations, especially the very low DO readings such as 1.7 mg/L and
1.9 mg/L reported on September 12, 1996. After contacting Mt. Airy's ORC, Mike told
me that the ORC felt like the very low readings stemmed from a problem with their DO
probe, however, he had no indication that any other readings were in error. On September
22, 1994 Allan Smith wrote a memo to Michelle Wilson, a former modeler in this Unit,
describing the results of side by side DO measurements the region took with Mt. Airy
WWTP staff. Allan noted that the WSRO's DO meter read 9.0 mg/L while Mt. Airy's read
7.1 mg/L.
During the period from 1994 through August 1995 the facility reported data from
two downstream monitoring sites located at Sheep Farm Road (Dwn #1) and Radar Road
(Dwn #2). The Radar Road site appears to be located considerably further downstream
than the monitoring site specified in its current permit. However, the Radar Road site does
appear to be in the proximity of ambient station # 02113850 (nr Ararat) which affords us
the opportunity to make a comparison between the two readings. Only three DO
measurements were taken at the ambient station in 1994. On one of these dates, July 13,
1994, a DO of 8.1 mg/L and a temperature of 24.0 C was reported at the ambient station.

On this same date Mt. Airy reported an instream DO concentration of 5 mg/L and a
temperature of 24.6 C at the Radar Road site. Since September 1995 the facility has been
monitoring at Carter St. (Dwn #1) and Sheep Farm Rd. (Dwn #2). These locations appear
to be closer to those specified in the NPDES permit.
Normally, repeated summertime instream DO violations, like the ones reported by
Mt Airy, would prompt the Instream Assessment Unit (IAU) to recommend strict
management strategies for oxygen consuming wastes for this portion of the Ararat River.
However, considering that at least a few of the instream measurements reported by this
facility may be questionable, I am hesitant to recommend a definitive management strategy
in the upcoming Yadkin River Basinwide Plan.
In order to improve our confidence in future data collected by the facility the IAU
would like to request that regional or ESB staff visit the facility to verify the DO
measurement techniques employed by Mt. Airy WWTP staff. The IAU recognizes that Mt.
Airy has expressed interest in joining the Yadkin Basin Dischargers Association and that
WWTP staff may not be taking DO measurements in the future. However, considering the
implications that these data can have on waste load allocations and management strategies
the IAU would like to have this matter investigated as soon as possible. If I can be of any
assistance in this effort please contact me at 733-5083 ext. 513.
Outlined below is a list of dates, taken from DMR self monitoring data during the
period 1994-1996, in which a DO violation was reported from at least one of the facility's
three sampling sites. The DO concentration for each site is reported in mg/L with the river
temperature in degrees Celsius shown in parentheses.
Date Upstream Downstream #1 Downstream #2
(US-52) (Sheep Farm Rd.) (Radar Rd.)
DO (Temp.) DO (Temp.) DO (Temp.)
5/27/94 8.1 (18.4) 4.9 (18.3) 4.5 (18.5)
6/15/94 5.8 (21.9) 4.9 (20.8) 4.9 (20.8)
6/16/94 2.9 (21.7) 5.1 (22.9 5.9 (22.2)
6/17/94 5.1 (22.5) 4.9 (21.3) 5.9 (21.9)
6/21/94 3.7 (26) 3.4 (25.8) 3.0 (26.6)
6/22/94 3.6 (25.3) 3.3 (27) 3.5 (27.7)
6/24/94 5.3 (21.9) 4.2 (23.8) 4.0 (23.4)
6/29/94 4.9 (24.4) 4.3 (22.9) 4.2 (25.2)
6/30/94 4.4 (25.8) 4.4 (23.4) 5.1 (27.1)
7/6/94 4.4 (21.9) 5.4 (21.7) 4.7 (24.1)
7/7/94 4.5 (24.1) 5.4 (22) 4 (23.5)
7/8/94 5.1 (23.7) 4.7 (24.5) 5.3 (23.2)
7/13/94 4.9 (24.1) 4.7 (24.4) 5 (24.6)
7/15/94 5.9 (26.6) 4.8 (23.3) 5.6 (24.4)
7/20/94 3.9 (20) 3.6 (22.5) 4 (24.8)
7/21/94 4.8 (22.8) 5.3 (25.8) 4.8 (26.3)
7/22/94 5.1 (18.4) 5.1 (19.8) 4.7 (19.7)
7/27/94 6.3 (21.9) 4.5 (20.5) 5 (21.7)
7/28/94 4.8 (19.7) 5.7 (21.2) 4.6 (20.9)
7/29/94 5.2 (23.4) 4.7 (21.9) 4.5 (22.2)
8/3/94 5 (20.9) 4.9 (21) 3.6 (21.5)
9/9/94 4.7 (24.1) 5.4 (22) 4.1 (23.5)
11/23/94 2.3 (9) 7.7 (8.3) 7.7 (7.6)

Date Upstream Downstream #1 Downstream #2
(US-52) (Sheep Farm Rd.) (Radar Rd.)
DO (Temp.) DO (Temp.) DO (Temp.)
6/8/95 5.1 (28.6) 4.5 (26.7) 4.6 (26.1)
6/15/95 4.9 (24.2) 7.6 (23.2) 7.1 (23.7)
6/16/95 3.3 (21) 3.7 (22.5) 3.2 (22.6)
6/21/95 3.8 (21.1) 2.8 (23.7) 2.8 (24.2)
6/27/95 4.5 (22.2) 5.1 (24.4) 5.0 (23.5)
6/28/95 4.5 (23.1) 4.5 (24.8) 4.3 (23.8)
6/29/95 4.7 (21.5) 4.7 (23.6) 4.2 (21.1)
7/20/95 5.2 (28.9) 4.6 (26.4) 4.7 (27.3)
7/21/95 4.4 (23.5) 4.5 (23.7) 4.8 (23.5)
7/27/95 1.9 (23) 2.1 (22) 2.0 (22.2)
8/9/95 5.1 (22.1) 4.3 (21.2) 3.8 (20.6)
8/10/95 7.6 (21.5) 4.9 (24.1) 4.4 (23.8)
8/15/95 3.7 (25.2) 3.3 (25) 3.2 (27.3)
8/16/95 4.4 (29.5) 5.1 (30.7) 3.5 (28.7)
8/17/95 3.8 (26.2) 3.5 (25.5) 3.4 (26.1)
8/23/95 4.6 (23.3) 4.0 (24.4) 4.2 (25.4)
8/24/95 5.4 (24.4) 4.8 (25.5) 4.4 (25.4)
8/25/95 5.2 (21.9) 4.7 (23.8) 4.2 (23.5)
8/30/95 4.7 (24.8) 5.1 (27.2) 5.1 (26.2)
8/31/95 5.1 (24.9) 4.1 (24.5) 4.2 (24.8)
Date Upstream Downstream #1 Downstream #2
(US-52) (Carter St.) (Sheep Farm Rd.)
9/7/95 5.5 (19.4) 5.0 (21.1) 4.8 (19.5)
9/14/95 5.0 (22.2) 4.4 (22.9) 5.0 (23)
2/1/96 4.5 (4.9) 6.2 (11.9) 5.5 (5.3)
6/19/96 5.2 (24.4) 5.3 (22.6) 4.9 (25.4)
8/14/96 4.9 (23.4) 5.1 (25.6) 5.3 (22.4)
8/15/96 4.9 (20.8) 4.6 (20.7) 4.8 (21.1)
8/20/96 4.5 (23.1) 4.8 (23.6) 5.7 (25.7)
8/21/96 5 (23.1) 4.6 (23.1) 4.4 . (24.4)
9/4/96 2.9 (20.8) 2.2 (20.6) 1.9 (20.4)
9/12/96 1.7 (20.9) 2.2 (22.1) 1.9 (21.4)
cc: Larry Ausley (ESB)
Mike Mickey (WSRO)