NC0035904_Biomonitoring Inspection_20040524

NCDENR
North Carolina Department of. Environment and Natural Resources
Michael F. Easley, Governor
May 24, 2004
Mr. William Stovall, Chief Engineer
North Carolina Department of Correction
2020 Yonkers Road .
Raleigh, NC 27609
Subject: COMPLIANCE BIOMONITORING INSPECTION (BIO)
McCain Hospital
Wastewater Treatment Plant
NPDES Permit No. NC0035904
Hoke County
•
Dear Mr. Stovall:
William G. Ross Jr., Secretary
Alan W. Klimek, P.E., Director
Coleen H. Sullins, Deputy Director
Division of Water Quality
Enclosed you will find a copy of the Compliance Biomonitoring Inspection report for the inspection
that was conducted during the week of April 19, 2004. The inspection included the sameobjectives as that of a
routine Compliance Evaluation Inspection plus sampling the 001 effluent with a whole effluent toxicity (aquatic
. toxicity test) to evaluate the biological effect of the facility's discharge on test organisms. As part of the
inspection a tour of the Wastewater Treatment Plant was conducted. All observations and recommendations
are in Part D. Summary of Findings/Comments of this inspection report. A 24-hour Plant Outfall 001 effluent
composite sample was collected on both April 20 and 23 by Dale Lopez (DWQ) and split with Research and
Analytical Labs, Inc. for use in an aquatic toxicity test. The aquatic toxicity test performed by Research and
Analytical Labs, Inc. was a chronic Ceriodaphnia dubia. pass/fail toxicity test, which resulted in a Pass that
indicated that the effluent would not be predicted' to have water quality impacts on receiving water. The
Division of Water Quality Aquatic Toxicology Laboratory, located on Reedy Creek Road in Raleigh, completed
the aquatic toxicity analysis for the DWQ. part of the split sample. The aquatic toxicity analysisperformed on
the DWQ split was a chronic Ceriodaphnia dubia full -range toxicity test; and, the test resulted in a chronic
value of 57.9%, which was below the 67% whole effluent, toxicity limit for this facility, the samples of effluent
had toxic chronic affects on test organisms, and would be predicted to • have receiving stream impacts.
Additionally, from. the 24-hour composite samples that was collected on April 20. The Division of Water
Quality Chemistry Laboratory, located on Reedy Creek Road in Raleigh, completed the results of the following
parameters: the five-day BOD analysis resulted in 23 mg/L, the total suspended solids was 210 mg/L (NPDES
permit limit is 45.0 mg/L, on this day the facility's result was. 167 mg/L), -the ammonia as nitrogen was 0.22
mg/L, the total Kjeldahlnitrogen as nitrogen was 7.1 mg/L, the nitrate plus nitrite as nitrogen was 31 mg/L, and
the total phosphorus was 7.2 mg/L.
It was understood that the Sandhills Youth facility was closed during the summer of 2003. This
amounted to approximately one-third reduction in flow and BOD for the wastewater treatment plant influent.
During the last three weeks before this BIO Inspection the 30-minute settleometer resulted in 200 mL/L, with a
225 Green Street — Suite 714, Fayetteville, North Carolina 28301-5043
Phone: [phone] FAX: .[phone] Internet: www.enr.state.nc.us/ENR/
An Equal Opportunity ! Affirmative Action Employer - 50 % Recycled 110 % Post Consumer Paper
NorthCarolina
aturallj/

Mr. Stovell
Page 2
May 24, 2004
turbid supernatant. Previously, the results were routinely 800 rnL/L, with a clear supernatant. The
settleometer change took place within a one -week period of time. At first, the dissolved oxygen in the
aeration basin (D:O.) changed from the usual 3 to 4 mg/L D.O. range to a 6 to 8 mg/L D.O. range. In addition,
the acidity of the aeration basin became greater and it had to be treated with more caustic to achieve the ideal
pH range. There was a large increase in the number of rotifers; Mr. Cockman (ORC) routinely performed at
least one microscopy per week. Recently, during this time of change for the WWTP, he increased it to three
times per day.
Mr. Cockman (ORC) requested Technical Assistance during the first day of the BIO inspection. Don
Register of this office visited the WWTP on that same day; Mr. Register will send the Technical Assistance
(TA) report in a separate letter. The recommendations of the TA were:
1) immediately lower the dissolved oxygen to less than 1 mg/L (to cause the activated sludge
to denitrify and to stop the nitrification process, which was causing the pH units to increase),
2) requisition timers for the aerators so that over -aeration could be avoided (the D.O. should
range from 1 to 2 mg/L),
3) increase the sludge wasting until the effluent ammonia as nitrogen increased (ammonia
removal is not required by the NPDES permit); this lower MLSS value would then be
recommended for routine operation.
This office understood, during a phone call with Mr. Cockman on May 24, 2004, that the above
recommendations were implemented. The 30-minute settleometer presently read 200 to 300 mL/L, with a clear
supernatant. The DMR for April had limit exceedences for two Daily Maximum and one Monthly Average for
TSS. According to the ORC, the WWTP continues to improve. .However, as a result of the DWQ part of the
split sample that failed at 57.9%, and also due to the total suspended solids result of 210 mg/L that was taken
from the DWQ part of the split sample, the facility evaluation rating of this BIO inspection was a marginally
compliant rating.
If you have any questions or comments concerning this report or require clarification on part(s) of this
report, please feel free to contact me at 910/486-1541.
��Sincerely,
Dale Lopez
Environmental Specialist
/dl
Enclosures: General Description of McCain. Correctional Hospital WWTP
EPA Water Compliance Inspection Report
Bioassay Compliance Inspection Checklist
Regional Field Inspectors Check List for Field Parameters
cc: Kevin Bowden, DWQ, ESB, ATU

Description of McCain WWTP:
McCain WWTP has a total average flow of 140,000 GPD. Flow comes from the prison, the prison
hospital, food services, small laundry, one lift station (East side) with two bathrooms, and backwash from the
water treatment plant. Flow travels through either the manual bar screen or the Lakeside automatic bar screen,
then into a 300,000 gallon capacity aeration basin (93 feet in diameter by 6 feet deep, with three 10 HP surface
aerators (detention time of approximately 48 hours). Wastewater flow then travels to a flow splitter box (which
can run clarifiers in series, in parallel, or isolate either of the two clarifiers (for example, when maintenance is
performed every six months on each clarifier). For normal operation, flow travels to clarifier #1 (31 feet in
diameter by 13 feet deep), then to clarifier #2 (the polishing clarifier, whose dimensions are 31 feet by 6'/2 feet
deep). Flow then travels to the disinfection unit, with UV lights (Trojan UV 3000B — with a total of 20 bulbs).
After- disinfecting, the flow travels through the Parshall Flume with a Sigma Ultrasonic flow meter, then to
Mountain Creek, and finally into the Lumber River. Concerning the return activated sludge (RAS), the
underfloor from Clarifier #1 flows through a telescopic valvingbox, then through a 3-Way Valve, and finally
back to the aeration basin. The 3-way valve can also be switched so that the underflow travels to the aerobic
digester (with 2 blowers) for wasting of sludge. The square aerobic digester's dimensions are 22 feet by 20
feet by 40 feet deep, with a capacity of 99,000 gallons. Scum from clarifier #.1 flows through a scum pump
(with a manual switch), then to the Aerobic Digester. The supernatant from the aerobic digester travels back to
theaeration basin (through a small sump pump and black ABS hose). Digested sludge from the aerobic
digester flows to six drying beds with a total area of 7500 square feet, 1250 square feet of area for each bed (25
feet by 50 feet). From the drying beds the dried digested sludge is taken to land application located next to the
WWTP.

United States Environmental Protection Agency
EPA Washington, D.C. 20460
Water Compliance Inspection Report
Form Approved.
OMB No. 2040-0057
Approval expires 8-31-98
Section A: National,Data System Coding (Le., PCS)
Transaction Code NPDES yr/mo/day Inspection
1 IsLI 2 U 31 NC0035904 111 12I 04/04/19 I 17•
Type Inspector Fac Type
18_ j 19 U 20 u
I I I I I I I I I I I. I I I I66
Remarks
211 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I.
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---Reserved--------- -------- --
67 I 5.0 169 70 J 71 U 72 N 3 I I 174 751 I I I I I I 180
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
McCain Correctional Hospital MU,'
NC Highway 211 -
Mccain NC 28361
Entry Time/Date
10:00 Am 04/04/19
Permit Effective Date
99/12/01
Exit Time/Date
12:00 PM 04/0/19
Permit Expiration Date
04/07/31
Name(s) of Onsite Representative(s)IT'itles(s)/Phone and Fax Number(s)
Darrel C Cockman/ORC/910-944-2351/
///
Other Facility Data ,
Name, Address of Responsible.Official/Title/Phone and Fax Number
William N Stovall, PE,4216 Mail Service Ctr Raleigh NC Contacted
No
27699//919-716-3419/9197163978
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit ■ Flow Measurement 1 Operations & Maintenance l Records/Reports
. Self -Monitoring Program Facility Site Review 1 Effluent/Receiving Waters 1 Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector Agency/Office/Phone and Fax
Dale Lopez FRO V';Q/; 91048615411726/910
Numbers Date //
486-O'10'7 J < ll /Yi�
tiJ J// � 11
1/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
. L-14 6,-/G-S) 414C-1) .3 ..)._ 5/0 4/-.
•
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.

NPDES yr/mo/day Inspection Type
NC0035904 I11 12 I 04/04/19 117 18 Inl.
(cont.)
• Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Caustic was added to the influent to assist with alkalinity in the aeration basin. Recently the caustic was
up to 40 gallons per day; at the time of this inspection the addition was 20 gallons per. day. ' sludge was
digested in a 99,000 gallon aerobic sludge digester. In the year 2002, a blower system with two blowers to
supply diffused air was installed in the aerobic sludge digester. The clarifier troughs were cleaned twice
per week, on Tuesday or Wednesday, then again on Friday. The UV disinfection lamps were cleaned ievery two
months and when the intensity sensor read 1.5. On the day of the inspection the readings -were 3.8 and 6.0.
The bulb banks were completely. changed during the months of February and March of 2004. During the time of
this inspection, the aerobic digester was probably at 80% capacity. A small sump pump was used to transfer
the digester supernatant to the aeration basin. .The drying beds were hauled to land application during
March 2004. All six beds had sludge, two ware ready to be hauled .at the time of this inspection. The
maintenance log was a wall chart and log.

Permit: NC0035904
Owner - Facility: NC Department of Correction - McCain Correctional Hospital WWTP
Inspection Date: 04/19/04 Inspection Type: Bioassay Compliance
Permit
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
Is the facility as described in the permit?
Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment:
operations & Maintenance
Does the plant have general safety structures in place such as rails around or covers over tanks, pits, or wells?
Is the plant generally clean with acceptable housekeeping?
Comment:
Par Screens,
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Is the screen free of excessive debris?
Is disposal of screening,in compliance?
Is the unit in good condition?
Comment:The Lakeside automatic barscreen was down for two years. The problem was a sensitive variable
frequency drive (VFD). It will be repaired in the near future. All screenings were disposed through the Hoke County
Landfill.
Secondary Clarifier
Is the clarifier free of black and odorous wastewater?
Is the site free of excessive buildup of solids in center well of circular clarifier?
Are weirs level?
Is the site free of weir blockage?
Is the site free of evidence of short-circuiting?
Is scum removal adequate?
Is the site free of excessive floating sludge?
Is the drive unit operational?
Is the sludge blanket level acceptable?
Is the return rate acceptable (low turbulence)?
Is the overflow clear of excessive solids/pin floc?
Is the surface free of bulking ?
Comment:The clarifier #1 (12 feet deep) sludge blanket was <2 feet. The clarifier #2 (the polisher clarifier, 6 and 1/2
feet deep) sludge blanket was 4 inches.
pumps-RAS-WAR
Are pumps in place?
Are pumps operational?
Are there adequate spare parts and supplies on site?
Comment:
Aeration Basins
Mode of operation
Type of aeration system
Is the basin free of dead spots?
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Permit: NC0035904 Owner - Facility: NC Department of Correction.- McCain Correctional Hospital WWTP
Inspection Date: 04/19/04 Inspection Type: Bioassay Compliance,
Flow Measurement - Influent
Is flow meter used for reporting?
Is flow meter calibrated annually?
Is flow meter operating properly?
(If units are separated) Does the chart recorder match the flow meter?
. Comment:
Flow Measurement - Effluent
Is flow meter used for reporting?
Is flow meter calibrated annually?
Is flow meter operating properly?
(If units are separated) Does the chart recorder match the flow meter?
Comment:
Record Keeoina
Are records kept and maintained as required by the permit?
Is at required information readily available, complete and current?
Are all records maintained for 3 years (lab. reg. required 5 years)?
Are analytical results consistent with data reported on DMRs?
Are sampling and analysis data adequate and include:
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COCs
Plant records are adequate, available and include
0&M (vlanual
As built Engineering drawings
Schedules and dates of equipment maintenance and repairs
Are DMRs cornplete: do they include alt permit pararneters?
Has the facility submitted its annual compliance report to users?
(If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift?
Is the ORC visitation log available and current?
Is the ORC certified at grade equal to or higher than the facility classification?
Is the backup operator certified at one grade less or greater than the facility classification?
Is a copy of the current NPDES permit available on site?
Is the facility description verified as contained in the NPDES permit?
Does the facility analyze process control parameters, for example: MLSS, MCRT, Settleable Solids, DO, Sludge
Judge, pH, and others that are applicable?
Facility has copy of previous year's Annual Report on file for review?
Comment:
Effluent Sampling,
Is composite sampling flow proportional?
Is sample collected below all treatment units?
Is proper volume collected?
Is the tubing clean?
Is proper temperature set for sample storage (kept at 1.0 to 4.4 degrees Celsius)?
Yes No NA NF
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Permit: NC0035904 . Owner - Facility: NC Department of Correction - McCain Correctional Hospital WWTP
Inspection Date: 04/19/04 Inspection Type: Bioassay Compliance
Fffliient Sarnoling
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
Comment:
Fffluent Pipe
Is right of way to the outfall properly maintained?
Are receiving water free of solids and floatable wastewater materials?
Are the receiving waters free of solids / debris?
Are the receiving waters free of foam other than a trace?
Are the receiving waters free of sludge worms?
If effluent (diffuser pipes are required) are they operating properly?
Comment:
Yes No NA NF
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Regional Field Inspectors Check List ror
ame of site to be Inspected: 8141
eld certification # (if applicable):
'DES #: 4IC `551 O'1
Region:
leD
InsPector
Circle the parameter or parameters performed at this site.
:sidual Chlorine, Settleable Solid
Instrumentation:
Does the facility have the equipment necessary to analyze field parameters as circled above?
a2ed
A pH meter
A Residual Chlorine meter
DO meter
A Cone for settleable solids•
Conductivit
A thermometer or meter that measures temperature.
Conductivity meter.
I. Calibration/Analysis:
. Is the pH meter calibrated with a 2 buffers and
checked with a third buffer each day of use?
!. For Total Residual Chlorine, is a check standard
analyzed each day of use?
1. Is the air calibration of the DO meter performed
each day of use?
I•. For Settleable Solids,is 1 liter of sample
settled for 1 hour?
5. Is the temperature measuring device calibrated.
annually against a certified thermometer?
6. For Conductivity, is a calibration standard
analyzed each day of use?
Yes
Yes
Yes
Yes
Yes
No
No.
No
No

IV. Documentation:.
1. Is the date and time that the sample was collected documented?
2. Is the sample site documented?,..
3. Is the sample .collector documented?
4. Is the analysis date and time documented?
5. Did the analyst sign the documentation?
6. Is record .of calibration documented?
7. For Settleable Solids, is.sample volume and
1 hour time settling time documented?
8. For Temperature,. is the annual calibration of
the measuring device documented?
Comments:
Yes'.
No
No
No
No
No
No
No
Please submit a copy of this completed form to the Laboratory Certification Program.
DWQ Lab Certification
Chemistry Lab •
Courier # 52-01-01
FIELD INSPECTOR CHECKLIST REV. 04/23/2002