NC0022691_Compliance Evaluation Inspection_20170620

11
Water kesources
ENVIRONMENTAL QUALITY
June 20, 2017
Mr. Andrew Luter
Yes AF Utilities Exp, LLC
1900 16th Street, Suite 950
Denver, CO 80202
SUBJECT: Compliance Evaluation Inspection
Autumn Forest AMC WWTP
NPDES Permit No. NCO022691
Guilford County
Dear Mr. Luter:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. JAY ZIMMERMAN
Director
RECEIVED/NCDEWWR
JUN 2 3 2017
Water Quality
Permitting Section
On June 07, 2017, Min Xiao and George Smith of this office met with Tony Montero, Randy Bell from Bell
Enterprises, and Annie Haluska of Apex Companies to perform a Compliance Evaluation Inspection on the
wastewater treatment system serving the Autumn Forest MHC. The inspection findings are detailed below
and an inspection checklist is attached.
I. Permit
The current permit became effective October 1, 2016, and will expire at midnight on June 30, 2021. A
current copy of the permit was kept onsite.
H. Self -Monitoring Program
The monthly DMRs were reviewed for the period of January 2016 through December 2016. The Autumn
Forest facility violated effluent permit limits in April, May, June, July, September, October, and December.
These violations have already been addressed in separate correspondence by this office.
M. Flow Measurement
The NPDES permit requires continuous flow recording and an annual calibration of the flow measuring
device. Effluent flow is obtained using a Siemens HydroRanger 200 meter. The meter was last calibrated by
Carolina Technical Services Specialists on June 06, 2017. Currently, the auto -sampler is collecting constant
time/constant volume composite samples. Efforts are being made to reprogram the sampler to collect flow
proportional composite samples.
IV. Sludge Handling and Disposal
Solids are removed from the single digester as needed by Jenkins Waste Management for disposal in the City
of Greensboro POTW.
V. Operations and Maintenance
Only one side of the dual train system (aeration basin, clarifier and chlorinator) is being used due to the low
influent flow volume. Since September 2016, Autumn Forest WWTP has changed the operators. The
current operators have made efforts to operate and maintain the plant.
VI. Facility Site Review
On February 10, 2017, the Division granted an Authorization to Construct to Autumn Forest WWTP for
installation of a new drum -based chemical feed system (aluminum chloride). The system installation has
been completed before and has been in service for total phosphorus reduction.
State of North Carolina I Environmental Quality I Water Resources
450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105
Phone: [phone] Internet: www.ncdenr gov

The 0.082 MGD permitted system consists of the following: EQ basin, bar screen, flow splitter, dual
aeration basins, clarifiers and chlorinators followed by a single dechlorinator unit, flow meter and sludge
holding. Only one side of the dual train system (aeration basin, clarifier and chlorinator) is being used due to
the low influent flow volume
VII. Records/Reports
A review of the facility files indicates thGt all records are being maintained according to the permit. The
ORC performs on-site measurements for flow, TRC, temperature, dissolved oxygen and pH. Other
parameters are measured by Statesville Analytical laboratory. A comparison of the January 2017 DMR with
the corresponding laboratory data found that the values were transcribed onto the monitoring report correctly,
except for the DO concentration for effluent. The DMR of January, February, and March will be amended
and resubmitted.
VIII. Upstream/Downstream Sampling
The upstream samples are collected from a lake, and the downstream sampling location is more than 100
feet. During the inspection, it was noted that the upstream sampling was not relevant and representative due
to its location. The permittee can request a minor permit modification to get the upstream monitoring
requirement removed. However, the downstream still needs to be monitored.
The staff of this office brought a meter to measure some parameters at the effluent discharge point and the
downstream sampling location. The data are shown below.
ampling location
Parameter
Effluent
discharge point
Downstream
Temperature (°C)
22.10
2380
DO (mg/1)
6.87
4.82
DO Saturation (%)
80.30
5860
pH
7.17
7.99
Conductivity (uS/cm)
839.00
143.80
IX. Effluent/Receiving Waters
The system discharges into a tributary of Reedy Fork, class "WS -V; NSW" waters in the Cape Fear River
Basin. The effluent was observed to be clear on the day of the inspection.
Should you have any questions concerning this report, please contact Min Xiao or me at [phone].
Sincerely,
herri V. Knight, PE
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
cc* Annie Haluska ([e-mail])
Central Files
NPDES Unit
WSRO

United States Environmental Protection Agency
Fort Approved
EPA Washington, D C 20460
OMB No 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A National Data System Coding (i e, PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 U 2 15 I 3 I NCO022691 I11 12 17/06/07 17 18 i C i 19 I G i 20I
211 1 1 1 1 1 1 1 1 1 11 1 1 1 I I I I I I l i i l l 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 _f6
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved-- --
73 I 4 75 1 1 1 1 1 80
72 L�j
67 70l_l 71 I —1
Section B Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
12 20PM 17/06/07
16/10/01
Autumn Forest MHC WWTP
3700 Autumn Forest Dr
Exit Time/Date
Permit Expiration Date
Browns Summit NC 27214
01 30PM 17/06/07
21/06/30
Name(s) of Onsite Representative(s)lfitles(s)/Phone and Fax Number(s)
Other Facility Data
///
Anthony Oscar Montero/ORC/336433-7221/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Adam Motsinger,136 Fairview Rd Ste 125 Mooresville NC 28117//704-799-6390/
No
Section C Areas Evaluated During Inspection (Check only those areas evaluated)
Permit E Flow Measurement Operations & Maintenance Records/Reports
Self -Monitoring Program N Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters
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(s) Agency/Office/Phone and Fax Numbers Date
Min Xiao WSRO WQ//336769800/
M \ 0/���
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
6%�%�'
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete
Page#

NPDES yr/mo/day Inspection Type
31 NCO022691 I11 12 17/06/07 17 18 ICI
Section D Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

Permit. NCO022691 Owner -Facility. Autumn Forest MHC WWTP
Inspection Date 06/07/2017 Inspection Type Compliance Evaluation
Permit Yes No NA NE
(If the present permit expires in 6 months or less) Has the permittee submitted a new ❑ ❑ 0 ❑
application?
Is the facility as described in the permit?
M
❑
❑
❑
# Are there any special conditions for the permit?
❑
0
❑
❑
Is access to the plant site restricted to the general public?
M
❑
❑
❑
Is the inspector granted access to all areas for inspection?
0
❑
❑
❑
Comment The current permit became effective October 1, 2016, and will expire at midnight on June
30, 2021 A current copy of the permit was kept onsite
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex MLSS, MCRT, Settleable ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment Only one side of the dual train system (aeration basin, clarifier and chlorinator)
is being
used
due to the low influent flow volume Since September 2016, Autumn Forest WWTP has
0
❑
changed the operators The current operators have made efforts to operate and maintain
❑
Has the facility submitted its annual compliance report to users and DWQ?
the plant
❑
M
❑
(if the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
Record Keeping
Yes No NA NE
Are records kept and maintained as required by the permit?-
0
❑
❑
❑
Is all required information readily available, complete and current?
0
❑
❑
❑
Are all records maintained for 3 years (lab reg required 5 years)?
M
❑
❑
❑
Are analytical results consistent with data reported on DM Rs?
❑
❑
❑
Is the chain -of -custody complete?
❑
❑
❑
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 CDCs
0
Are DMRs complete do they Include all permit parameters?
0
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
M
❑
(if the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator
❑
❑
M
❑
on each shift?
Is the ORC visitation log available and current?
M
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Page#
3

"v
Permit NCO022691 Owner - Facility Autumn Forest MHC yWUrP
Inspection Date. 06/07/2017 Inspection Type- Compliance Evaluation
Record Keeping Yes No NA NE
Is the backup operator certified at one grade less or greater than the facility classification? M ❑ ❑ ❑
Is a copy of the current NPDES permit available on site? E ❑ ❑ ❑
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ N ❑
Comment: A comparison of the January 2017 DMR with the corresoonding laboratory data found that
the values were transcribed onto the monitoring report correctly, except for the DO
concentration for effluent The DMR of January. February. and March will be amended and
resubmitted
Bar Screens
Yes No NA NE
Type of bar screen
0
❑
❑
❑
a Manual
0
❑
❑
❑
b Mechanical
❑
❑
❑
❑
Are the bars adequately screening debris?
E
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
N
❑
❑
❑
Is the unit in good condition?
0
❑
❑
❑
Comment A milk crate hangs below the influent pipe of the EQ basin to catch trash and rags
Equalization Basins
Yes No NA NE
Is the basin aerated?
0
❑
❑
❑
Is the basin free of bypass lines or structures to tie natural environment?
0
❑
❑
❑
Is the basin free of excessive grease?
0
❑
❑
❑
Are all pumps present?
0
❑
❑
❑
Are all pumps operable?
N
❑
❑
❑
Are float controls operable?
❑
❑
❑
N
Are audible and visual alarms operable?
❑
❑
❑
0
# Is basin size/volume adequate?
0
❑
❑
❑
Comment The EQ basin has 2 pumps It's aerated using a single blower
Chemical Feed
Yes No NA NE
Is containment adequate?
E
❑
❑
❑
Is storage adequate?
0
❑
❑
❑
Are backup pumps available?
0
❑
❑
❑
Is the site free of excessive leaking?
0
❑
❑
❑
Page# 4

t*
Permit. NCO022691 Owner - Facility Autumn Forest MHC WWTP
Inspection Date- 06/07/2017 Inspection Type- Compliance Evaluation
Chemical Feed Yes No NA NE
Comment- The aluminum chloride is added before entering the secondary clarifier
Aeration Basins
Mode of operation
Type of aeration system
Is the basin free of dead spots?
Are surface aerators and mixers operational?
Are the diffusers operational?
Is the foam the proper color for the treatment process?
Does the foam cover less than 25% of the basin's surface?
Is the DO level acceptable?
Is the DO level acceptable?(1 0 to 3 0 mg/1)
Yes No NA NE
Ext Air
Diffused
■ ❑ ❑ ❑
❑ ❑ ■ ❑
N ❑ ❑ ❑
■ ❑ ❑ ❑
N ❑ 1:11:1
❑ ❑ ❑ E
❑ ❑ 110
Comment Only one side of the dual train system (aeration basin, clarifier and chlorinator) is being used
due to the low influent flow volume
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
0
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
❑
❑
0
❑
Are weirs level?
N
❑
❑
❑
Is the site free of weir blockage?
N
❑
❑
❑
Is the site free of evidence of short-circuiting?
N
❑
❑
❑
Is scum removal adequate?
0
❑
❑
❑
Is the site free of excessive floating sludge?
0
❑
❑
❑
Is the drive unit operational?
❑
❑
0
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
0
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth)
❑
❑
❑
0
Comment,
Disinfection -Tablet
Yes No NA NE
Are tablet chlorinators operational?
0
❑
❑
❑
Are the tablets the proper size and type?
E
❑
❑
❑
Number of tubes In use?
4
Is the level of chlonne residual acceptable?
❑
❑
❑
N
Page# 5

a
Permit NCO022691 Owner - Facility Autumn Forest MHC WWTP
Inspection Date- 06/07/2017 Inspection Type. Compliance Evaluation
Disinfection -Tablet Yes No NA NE
Is the contact chamber free of growth, or sludge buildups M ❑ ❑ ❑
Is there chlorine residual prior to de -chlorination? ❑ ❑ ❑ 0
Comment
De -chlorination Yes No NA NE
Type of system ? Tablet
Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ ❑ 0
Is storage appropriate for cylinders? 0 ❑ ❑ ❑
# Is de -chlorination substance stored away from chlorine containers? 0 ❑ ❑ ❑
Comment
Are the tablets the proper size and type? 0 ❑ ❑ ❑
Are tablet de-chlonnators operational? ❑ ❑ ❑
Number of tubes in use?
Comment
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
0
❑
❑
❑
Is flow meter calibrated annually?
M
❑
❑
❑
Is the flow meter operational?
❑
❑
❑
(If units are separated) Does the chart recorder match the flow meter?
❑
❑
0
❑
Comment Effluent flow Is obtained using a Siemens HvdroRanoer 200 meter The meter was last
calibrated by Carolina Technical Services Specialists on June 06, 2017
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? M ❑ ❑ ❑
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑
Comment
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and M ❑ ❑ ❑
sampling location)?
Comment The upstream samples are collected from a lake, and the downstream sampling location Is
more than 100 feet
Page# 6