NC0021504_Inspection_20020423

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Michael F. Easley, Governor
April 23, 2002
The Honorable James E. Blake
Mayor, Town of Biscoe
P.O.Box25
Biscoe, N.C. 27209
SUBJECT: Compliance Evaluation Inspection
Town of Biscoe WWTP
NPDES Permit No. NC0021504
Montgomery County
Dear Mr. Blake:
William G. Ross Jr., Secretary
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
Enclosed is a copy of the Compliance Evaluation Inspection conducted April 17,
2002.
As part of the inspection, a tour of the Wastewater Treatment Plant was conducted
and your staff was most cooperative. All observations and recommendations are in Part
D. Summary of Findings/Comments of this inspection report. The priority of all
wastewater treatment facilities should to always be in complete compliance with the
NPDES permit, which will ensure the best quality effluent discharged to our receiving
streams.
Please review the attached report. If you or your staff have any questions do not
hesitate to contact me at 910-486-1541.
erely,
;LJ ,j
Don Register
Environmental Technician IV
Fayetteville Regional Office
225 Green Street — Suite 714, Fayetteville, North Carolina 28301-5043
Phone: [phone] FAX: [phone] \ Internet: 1,vww.ennstate.nc.us/ENR
An Equal Opportunity \Affirmative Action Employer— 50% Recycled \ 10% Post Consumer Paper
•

NPDES COMPLIANCE INSPECTION REPORT
North Carolina Division of Water Quality
Fayetteville Regional Office
Section A. National Data System Coding
Transaction Code: N NPDES NO. NC0021504 Date: 020417 Inspection Type: C
Inspector: S Facility Type: 1 Reserved:
Facility Evaluation Rating: 4 BI: N QA: N Reserved:
Section B: Facility Data
Name and Location of Facility Inspected: Town of Biscoe WWTP
Entry Time: 10:00 AM Permit Effective Date: 990801
Exit Time/Date: 3:00 PM / 020417 Permit Expiration Date: 040630
Name(s), Title(s) of On -Site Representative(s):
J. David Asbill (Temporary Grade III) - ORC
Sam Stewart (Grade I) - Backup Operator
Phone Number(s):
910-572-7652 (mobile)
910-428-4112 (Town Hall)
Name, Title and Address of Responsible Official:
Mr. James E. Blake, Mayor
POBox25
Biscoe, NC 27209 Contacted: No
Section C: Areas Evaluated During Inspection
(S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated, N/A = Not Applicable)
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Section D: Summary of Findings/Comments:
1. The following parameters are analyzed by facility staff: pH, Temperature, Dissolved Oxygen and
Chlorine Residual. - All other parameters are analyzed by Burlington Research (commercial
laboratory). The Chlorine Residual method used by this facility is an approved method for
wastewater analysis. The D.O. meter is being calibrated properly.
The Chlorine Residual was performed by the staff (reading was 0.97 mg/1). It was recommended
that the level be lowered, but the fecal coliform results will dictate how low. Several fecal violations
were reported during 2001 and to date (five weekly maximum and one monthly maximum).
The sampling procedures were reviewed along with the importance of having the proper chlorine
residual to ensure proper disinfection. It was strongly recommended that fecal samples be collected
by Tuesday of each week in order for additional testing, if needed.
2. The manual bar screen appeared to be operational with all screenings transported to the County
landfill.
3. All aerators in the aeration basin appeared to be operational. The back-up aerator was down for
motor repair. The Mixed Liquor results averaged 4900 mg/1. As a recommendation, the Dissolved
Oxygen should be checked and recorded daily in the aeration basins. monitoring the DO will
help the operator be aware when the plant is organically overloaded. The DO should range
between 1 - 3 mg/1.
4. The clarifier sludge depth was checked during the inspection and it appeared to be 4.5 feet.
5. The chlorine contact tank is cleaned as often as needed. A new sump pump was placed in operation
in January of 2001. The sludge blanket in the chlorine contact tank appeared to be 6 inches.
6. As recommended, the return sludge was rerouted to the center of the channel at the
headworks. The influent flow appears to be evenly split into the two (2) aeration basins.
Thank you for your cooperation in following this recommendation.
7. The existing pond is not utilized in treatment and has not been for quite a few years. When
excessive amounts of rainfall occurs and the level of the pond rises, it spills over into the chlorine
contact tank for chlorination. A new chlorine flow paced system has been installed and it will take
into account flow from the pond to assist in proper disinfection of the effluent.
8. The sludge thickener is used to thicken WAS (waste activated sludge) before pumping to the sand
beds. Sludge is currently wasted approximately 45 minutes/day - 2 days/week.
9. Onesand drying bed was clean at the time of the inspection and the other beds are in the process of
drying. All sludge is disposed of through the County landfill.

9. One sand drying bed was clean at the time of the inspection and the other beds are in the process of
drying. All sludge is disposed of through the County landfill.
Name and Signature of Inspector Agency/Office/Telephone
DENR/Fayetteville/910-486-1541
airie a Signature of Reviewer Agency/Office/Telephone
/ DENR/Fayetteville/910-486-1541
Action Taken
Regulatory Office Use Only
Compliance Status
_Noncompliance
_Compliance
Date
Date
Date

Section D: Summary of Findings/Comments
Brief Facility Description:
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FACILITY SITE REVIEW
YQ:3 No N/A 1. Treatment units properly operated and maintained.
Yes moo' N/A 2. Standby power or other equivalent provision provided.
Yes tl ) N/A 3. Adequate alarm system for power or equipment failure available.
4. Sludge disposal procedures appropriate:
No N/A a. Disposal of sludge according to regulations
es No N/A b. State approval for sludge disposal received.
Yj No N/A 5. All treatment units other than backup units in service.
es) No N/A 6. Sufficient sludge disposed of to maintain treatment process equilibrium.
No N/A 7. Adequate number of qualified operators on staff.
CO No N/A 8. Established procedures available for training new employees.
No N/A 9. Adequate spare parts and supplies inventory maintained.
Yes 6 N/A 10. a. Hydraulic overflows and/or organic overloads experienced
Yes N/A b. Untreated bypass discharge occurs during power failure
Yes do N/A c. Untreated overflows occurred since last inspection.
es No N/A 11. Plant has general safety structures such as rails around or covers over
tanks, pits, or wells.
No N/A 12. Plant is generally clean, free from open trash areas.

18. Activated Sludge Basins/Oxidation Ditches:
ej No N/A a. Dead spots
Yes to N/A b. Failure of surface aerators
Yes 60 N/A c. Air rising in clumps
Yes NI) N/A d. Dark foam or bad color
Yes 1VQ' N/A e. Thick billows of white, sudsy foam
Yes N/A f. Air rising unevenly
Yes o N/A g. Excessive air leaks in compressed air piping.
19 Stabilization Ponds/Lagoons:
a. Excessive weeds. including duckweed in stabilization ponds
b. Dead fish or aquatic organisms
c. Buildup of solids around influent pipe
d. Excessive scum on surface.
Yes _ No
Yes No
Yes No
Yes No
Page 3
20. Secondary Clarifier:
Yes . N/A a. Excessive gas bubbles on surface
e No N/A b. Unlevel overflow weirs
Yes to N/A c. Weir blockage
Yes l N/A d. Evidence of short circuiting
Yes ISO N/A e. Excessive buildup of solids in center well of circular clarifier
Yes 6- N/A f. Pin floc in overflow
Yes) N/A g. Ineffective scum rake
Yes ( a N/A h. Floating sludge on surface
Yes ch N/A i. Excessive high sludge blanket
Yes ( Io) N/A j. Clogged sludge withdrawal ports on secondary clarifier.
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
21. Filtration:
a. Filter surface clogging
N/ b. Short filter run
N/A c. Gravel displacement of filter media
N/A d. Loss of filter media during backwashing
N/A e. Recycled filter backwash water in excess of 5 percent
f. Formation of mudballs in filter media.
22. Chlorination Unit:
YesN/A a.. Sludge buildup in contact chamber
Yes (NQ) N/A b. Gas bubbles
Yes 1� N/A c. Floating scum and/or solids
Yes Noj N/A d. Inadequate ventilation of chlorine feeding room and storage area
j'eJ No N/A e. NIOSH-approved 30 minute air pack
176-9 No N/A f. All standing chlorine cylinders chained in place
y'e's, No N/A g. All personnel trained in the use of chlorine
Yes .N N/A h. Improper chlorine feed, storage, and reserve supply.

Yes N/A
Yes
Yes
No.
N/A
N/A
Yes N/A
Yes <ID. N/A
Yes (N�. N/A
Yes No N/A.)
Yes la) N/A
Yes i N/A
Yes N/A
Yes N/A
Yes No /Pk3
Ye No N/A
Yes No
Yes No
No N/A
Page 5
30. Plant Effluent:
a. Excessive suspended solids, turbidity, foam, grease, scum, color, and
other macroscopic particulate matter present
b. Potential toxicity (dead fish, dead plant at discharge)
c. Outfall discharge line easily accessible.
31. Flow Measurement:
a. Improper placement of flow measurement device
b. Flow totalizer not calibrated
c. Buildup of solids in flume or weir
d. Broken or cracked. flume or weir
e. ' Improperly functioning magnetic flowmeter
f. Clogged or broken stilling wells
g. Weir plate edge corroded or damaged
h. System not capable of measuring maximum flow
i. Flow measurement error greater than-+/- 10%.
32. Sampling:
a. Sampling and analysis completed on parameters specified by permit
b. Samples refrigerated during compositing
c. Composite sample temperatures maintained at less than or equal to 4
degrees Celsius during sampling
d. Contract laboratory used for sample analysis.
Yes No N/A
'e No N/A
6 No N/A
No
N/A
No N/A
No N/A
es) No N/A
(des) No N/A
LYe No N/A
RECORDKEEPING AND REPORTING
1. Recordsand reports maintained as required by permit.
2. All required information available, complete, and current.
3. Records maintained for 3 years and all sludge records maintained for 5
years.
4. Analytical results consistent with data. reported on DMRs.
5. Sampling and analyses data adequate and include:
a. Dates, times, and location of sampling
b. Name of individual performing sampling
c. Results of analyses and calibration
d. Dates of analyses
e. Name of person performing analyses.

PERMIT NUMBER: NC0021504
FACILITY NAME: Biscoe Town- WWTP
CITY: Biscoe
OUTFALL: 001
COUNTY: Montgomery
PERIOD ENDING MONTH: 1 - 2002
REGION: Fayetteville
PAGE 1 OF 2
00010
deg c
TEMPERATURE,
WATER DEG.
CENTIGRADE
00300
mg/1
DO, Oxygen,
Dissolved
00310
mg/1
HOD, 5-DAY
(20 DEG. C)
00400
su
PH
00530
mg/1
SOLIDS, TOTAL
SUSPENDED
00600
mg/1
NITROGEN, TOTAL
(AS N)
00610
mg/1
NITROGEN,
AMMONIA TOTAL
(AS N)
00665
mg/1
PHOSPHORUS,
TOTAL(AS P)
2 01
29
30
6
12.2
6.75
2.97
7.04 = 7.06
3.8
0
3 01
29
30
6
12.81
6.92
3.6
7.04 - 7.06
5.6
0
4-01
29
30
6
17
6.35
3.87
7.02 - 7.04
3.3
0.69
0.6
4.8
5-01
29
30
6
19.78
6.16
5.66
6.82 - 7.02
7.3
4.42
6-01
29
30
6
23.33
6.07
6.85
6.91 - 7.14
6.8
1.42
7-01
29
30
6
24.36
6.1
3.45
7.01 - 7.24
5
1.3
0
1.1
8-01
29
30
6
25.08
6.18
1.9
6.72 - 7.26
7.4
0.1
9 01
29
30
6
21.65
6.2
5.02
6.69 - 6.88
7.2
0.55
10 01
29
30
6
16.78
6.34
6.12
6.79 - 6.92
3.2
11.89
0
2.1
11 -01
29
30
6
14.95
6.1
5.325
6.7 - 6.84
7.375
0
12 - 01
29
30
6
12.75
6.375
4.95
6.64 - 6.76
4.25
0
1 - 02
29
30
6
10
7.64
5.54
6.44 - 6.65
10.9
23.4
0.12
2.7

PERMIT NUMBER: NC0021504
OUTFALL: 001
FACILITY NAME: Biscoe Town- WWTP
CITY: Biscoe
COUNTY: Montgomery
31616
tk/100m1
COLIFORM, FECAL
MF, M-FC
BROTH,44.5C
50050
mgd
FLOW, IN
CONDUIT OR THRU
TREATMENT PLANT
50060
mg/1
CHLORINE,
TOTALRESIDUAL
TGP3B
pass/fail
P/F STATRE 7DAY
CHR CERIODAPHNIA
2-01
0.6
15.6
0.311
0.71
1
3-01
0.6
15.7
0.3441
0.506
1
4-01
0.6
5.6
0.2698
0.529
1
5-01
0.6
0
0.2645
0.748
6-01
0.6
2.4
0.2712
0.386
7-01
0.6
71.3
0.221
0.309
1
8 - 01
0.6
7.3
0.2419
0.88
9-01
0.6
2.4
0.2424
0.962
10-01
0.6
33
0.2257
0.89
1
11 - 01
0.6
2.087798
0.22
0.681579
12-01
0.0
47.771375
0.233
0.8035
1 -02
0.0
2.987551
0.312774
0.759524
1
PERIOD ENDING MONTH: 1 - 2002
REGION: Fayetteville
PAGE 2 OF 2