NC0044725_Biomonitoring Inspection_19980911

NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
FAYETTEVILLE REGIONAL OFFICE
Division of Water Quality
September 11, 1998
Mr. Larry Barnett, Executive Director
Laurinburg-Maxton Airport Commission
Maxton, N.C. 28364
SUBJECT: Compliance Biomonitoring Inspection
Laurinburg-Maxton Airport Commission WWTF
NPDES Permit No. NC0044725
Scotland County
Dear Mr. Barnett:
Find enclosed a copy of the Compliance Biomonitoring Inspection report
for the inspection conducted the week of August 10, 1998.
The inspection included many of the same objectives as. that of a routine
Compliance Evaluation Inspection. plus a chronic bioassay test to evaluate the
biological 'effectof the LMAC WWTF effluent on test organisms. The' bioassay
was performed by the DWQ Aquatic Toxicology Laboratory located on Reedy
Creek Road in Raleigh. The results of the bioassay was recorded as a "PASS".
Please be aware that this test will not be used for compliance purposes as the
reproduction quality for the control organisms did not meet specified test
requirements. Test results are attached for your review.
If you have any questions or require clarification for any item contained in
this report please do not hesitate to contact me at [phone].
Enclosure, Inspection Report
cc: Beth Walls, USEPA, Reg. IV
Matt Matthews, DWQ Aquatic Toxicology Unit
Paul E. Rawls
Environmental Specialist
225 GREEN STREET, SUITE 714, FAYETTEVILLE, NORTH CAROLINA 28301-5043
' PHONE [phone] FAX [phone]
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NPDES COMPLIANCE INSPECTION REPORT
Division of Water Quality
Fayetteville Regional Office
Section A. National Data System Coding
Transaction Code: N NPDES NO. NC0044725 Date: 980811 Inspection Type: B
Inspector: S Facility Type: 1 Reserved:
Facility Evaluation Rating: 4 : BI: D QA: N Reserved:
Section B: Facility Data
Name and Location of Facility Inspected:
Laurinburg-Maxton Airport Commission WWTF
Entry Time/Date: 10:00 am / 980810 Permit Effective Date: 941201
Exit Time/Date : 11:00 am / 980810 - Permit Expiration Date: 991130
Name(s), Title(s) of On -Site: Representative(s):
Gary Arnett, ORC
Phone Number(s): [phone]
Name, Title and Address of Responsible Official:
Larry Barnett, Executive Director
Phone Number: " [phone] Contacted:. No
;Section C: Areas Evaluated During Inspection
(S = Satisfactory, M = Marginal, U = Unsatisfactory, N = Not Evaluated)
Facility Site Review:
Laboratory:
Pretreatment:
Self -Monitoring Program:
Records/Reports
Flow Measurement:
Effluent/Receiving Waters:
Compliance Scheduler::"N
Operation & Maintenance:
Other:

Summary of Findings/Comments: -
1. A review of effluent monitoring reports was performed as part of this inspection. Data was
traced from commercial laboratory report to the monthly effluent monitoring report. May
19, 1998 influent BOD did not meet QC requirements. Please note all such occurrences on
future DMRs by placing an asterisk beside the number and indicating in the comment section
(on the back of the form) that the test was not valid due to not meeting test requirements.
There were no other anomalies noted.
2. DO samples are taken from the effluent wetwell.
3. A copy of the current NPDES permit could not be produced upon reguest. It is suggested that
a complete copy of all current DWQ permits be maintained in the main office files as well as
the WWTF.
It is suggested that the ORC and WWTF staff periodically review all permits.
4. All parameters measured on the effluent, including those required by the pretreatment program
are reported on monthly. DMRs.
5..One of the two small clarifiers was taken out of service August 6, 1998 for routine preventive
maintance..
6. Influent Flow meter was last calibrated 5/29/98. Suggest cleaning spider webs from the unit
occasioanly. Spider webs may affect accuracy of the unit.
7. Please remember to check the appropriate box under FLOW to indicate influent flow
measurement on the DMR..
8. One of the influent pumps was taken out of service August 8, 1998. The pump was
scheduled repair for 8/11/98.
9. A review of upstream Fecal Coliform monitoring revaled several days of unusually high
coliform levels during June and July 98. Should you notice further high upstream values for
coliform or other parameters please contact Paul Rawls at [phone].
10. There is no planned process control testing for this facility. WWTF staff use imhoff cone,
microscope and sludge judge to operate the facility.
Please consider periodically determining sludge age, mixed liquor susspended solids and
removal rates in order to track facility performance.
11. The inspection of the "headworks" found those units needing extensive repair. The needed
repairs have already been budgeted along with other WWTP rehab and expansion. Grit
removal unit was out of service. Bar screen has eroded to critical point. Grating is very
dangerous for WWTP staff an should not be used.
LMAC does not have a written Preventitive Mainance Program. It is strongly suggest
that a comprehensive O&M program be -established.
12. Hobbs, Upchurch and Associates (Engineers) are currently workingon plans for the
WWTP's expansion and revision.
13. Suggest placing a thermometer in each composite sampler cabinets.
14. It is understood that LMAC staff have not had Confined Space Training. LMAC should offer
Confined Space Training to all staff entering such areas as soon as possible.
15. Calibration log reviewed for pH meter. Please establish a similar log for the Dissolved
Oxygen meter.

Name and Signature of Inspection Agency/Office/Telephone No. Date •
Paul E. Rawls.— DENR/Fayetteville/(9 1 0) 486-1541 980911
Acton Taken
Regulatory Office Use Only Date
Compliance Status
Noncompliant
Compliant

Division of Water Quality
August 26, 1998
MEMORANDUM
RCIVD
IEIVECO
q, 1998
RGATT
EV; SCE
c• F10E
To: FRO Water Quality Supervisor
Through: Matt Matthews 't`h
From: Sandy Mort titolk
Subject: Whole effluent toxicity test results
Laurinburg-Maxton Airport
NPDES Permit # NC0044725/001
Scotland County
The aquatic toxicity test using 24-hour composite samples of effluent discharged from Laurinburg-Maxton
Airport has been completed. Laurinburg-Maxton Airport has an effluent discharge permitted at 1.00
million gallons per day (MGD) entering Lumber River (7Q10 of 111.0 CFS). Whole effluent samples
were collected on August 11 and 14 by Paul Rawls for use in a chronic Ceriodaphnia dubia pass/fail
toxicity test. The test using these samples resulted in a pass, but these results should not be used for
compliance monitoring purposes. Control organisms did not meet reproduction quality control criteria
(25% released third brood neonates). Toxicity test information follows.
Test Type
Test Concentrations
Test Result.
Control Survival
Control Mean Reproduction
Test Treatment Survival
Treatment Mean Reproduction
First Sample pH
First Sample Conductivity
First Sample Total Residual Chlorine
Second Sample pH
Second Sample Conductivity
Second Sample Total Residual Chlorine
3-Brood Ceriodaphnia dubia pass/fail
1.3% sample
Pass (Invalid)
100%
16.2 neonates
100%
16.5 neonates
7.80 SU
1660 micromhos/cm
<0.1 mg/L
7.95 SU
2250 micromhos/cm
<0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. Please contact us if further effluent toxicity monitoring is desired. We may
be reached at [phone].
Basin: LUM51
cc: Central Files
Environmental Sciences Branch Water Quality Section

INSPECTION REPORT
•
UPDATE OPTION: TRX: 5IF KEY: NC0044725INSBIO 980812
SYSMSG: *** DATA ADDED SUCCESSFULLY ***
PERMIT--- NC0044725 REG/COUNTY-- 06 SCOTLAND
FACILITY-- LAURINBURG-MAXTON AIRPORT LOC-- MAXTON
INS TYPE
BIO
NEXT PLANNED
INSPECTION INSPECTED BY:
DATE: 980812 PER
REPORT INSPECTION DMR • RESPONSE RECEIVED
DATE STATUS STATUS .DUE DATE DATE
980911 C C
COMMENTS:

UPDAZ%E, OPTION:
SYSM
INSPE CT I ON
DATE,:, 980911
P ,LWAYNE MCDEVIfi r 4
SECRETARY i11.j �
REPORT }. I°NSPECTION DMR
DATE'')�,`'-� a STATUS STATUS
9809,11:
apt, " p' ;
f
DATA ADDED SUCCESSFULLY
44725
UR:IINBURG—MAXTON AIRPORT
,,COMMENTS:
NEXT PLANNED
INSPECTION REPORT
NORTH CARD 1DEPARTMENT OF
TRX: 5I F KEY: NCO 0 �� TMEKi" AND d L RESOURCES
FAYETTEVILLE REGIONAL OFFICE
***
INSPECTED BY:
RP
REG/COUNTY-- 06 SCOTLAND
LOC-- MAXTON
RESPONSE RECEIVED
DUE DATE DATE
225 GREEN STREET, SUITE 714, FAYETTEVILLE, NORTH CAROLINA 28301-5043
PHONE [phone] FAX [phone]
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