NC0020389_CSI 04-20-2022_20220523

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environ►nental Quality
May 23, 2022
Kimberly T. Pickett, MPA, Interim Town Manager
Town of Benson
PO Box 69
Benson, NC 27504-0069
Subject: Compliance Sampling Inspection
Benson WWTP
NPDES Permit No. NC0020389
Johnston County
Dear Ms. Pickett:
On April 20, 2022, Mitch Hayes of the Raleigh Regional Office conducted a compliance sampling
inspection at the subject facility. The assistance and cooperation of Brian Leavitt, Operator in Responsible
Charge (ORC) and other staff with this inspection was greatly appreciated. Below is a lists of findings
developed from the inspection and review of the permit:
1. The permit was issued April 12, 2021, became effective May 5, 2021 and will expire April 30,
2026.
2. Brian Leavitt is listed as the ORC and Christopher M. Brigman is listed as the back-up ORC;
however, BIMS status has Mr. Brigman listed as invalid as a result of not having his course
certificates not recorded. Please send in copies of Mr. Bridgman's course certificates to
certadniin @ncdenr.gav
3. The 1.9 MGD facility consists of the following units: arc bar screen, grit removal, dual manual bar
screens, Parshall flume with flow measurement, influent composite sampler, three (3) influent
screw pumps, three (3) oxidation ditches (ditches 1 and 3 are used for aeration and ditch 2 is kept
anoxic for nutrient removal), five (5) secondary clarifiers, a RAS and WAS pump station, five (5)
tertiary filters, a liquid chlorine contact basin, a dechlorination basin with post aeration, an effluent
flow meter, effluent composite flow meter, one (1) concrete lined sludge lagoon, two stabilization
lagoons/influent flow storage and backup generator.
4. At the time of inspection, the arc bar screen and the grit removal system were operating normally.
Screenings are conveyed to a dumpster and disposed in a landfill. One screw pump was in use due
to low influent flow, the other two screw pumps are operational but not in use. All rotors in the
ditch's 1 and 3 were in operational and run on timers. Foam in the ditches covered less than 50%
of the surface area. All five secondary clarifiers were in use. Effluent flowing off the weirs appeared
clear. Four out five tertiary filters were on line. The number 1 filter was not operational due to
broken aeration disc. Currently there is no repair for the disc. The tertiary filters will be replaced
with disc filtration during the next upgrade. Effluent in the dechlorination tank / aeration tank and
_EQO
r+awrpr�
North Carolina Department of Environmental Quality 1 Division of Water Resources
Raleigh Regional Office I 3800 Barrett Dnve I Raleigh, North Carolina 27609
919.791.4200

at the effluent appeared clear with no foam or solids. All three sludge lagoons were near full with
a staff gage reading of 2.75 feet in lagoon 1.
5. Discharge Monitoring Reports for the period February 2020 through March 2022 were reviewed
for compliance with permit limits and monitoring requirements. An NOD was issued for February
2020 for exceeding monthly flow limit; a NOV was issued for exceeding flow for January 2021; a
enforcement action was issued for exceeding monthly flow limit for February 2021; a NOD was
issued for exceeding weekly BOD average for April 2021; a enforcement action was issued for
exceeding weekly average ammonia nitrogen; a enforcement action was issued for exceeding
monthly average for BOD and ammonia nitrogen for September 2021; and an enforcement action
was issued for exceeding weekly average for BOD and ammonia nitrogen for October 2021.
6. Commercial lab results, chain of custody records, and bench sheets were compared with data
submitted on the DMR for the month of March 2022. No discrepancies were noted.
7. The Benson WWTP laboratory # 196 analyzes the following parameters: pH, temperature, DO,
TRC, fecal coliform, and conductivity. All other parameters are analyzed by Environment 1 and
Meritech Inc. All reagents were within expiration date.
8. The results from the compliance sampling are listed below:
A081353
North Carolina Division oLWater Resources Water Sciences Sect on Latroralory Results
Loc. been.: sENION 1MY TP
County kaktteit Colaetor SAME Vm1D
Raydt. Big Report To ffiQ tacaeon ID:
Rex Basin WM Curled Date: Mg= Pftorgy
Emptying Collect Teem 4$L1. um* mask 218611036185
coc Yee+No Semple Depth Lx. Type: Maul
Final Report
Bthis report is labeled preliminary report; the results have not been validated. Do not use for Regulatory purposes.
Sample iDMOM
PO Camber Al
Drip Reoand'
Tine Recurred tiisl�
LAttrorke LogieD
newel Method 13108118183810,
Final Repot D. ism
Ripon Print Deer. 11NI
CAS # Aniline Name
Sample temperature at receipt by lab
It
a11Oer
LAB
0.s
Link
c
lid
Reference .12010 S"Fidaled.Y
42022 MBWIFT
MIc
BOD 6-Day In liquid 2.0 2.8 06 mplL SM62108-2aot 4211 2 J.JRGEVICH
Colitarm. MF Fecal in liquid 1 3000 B3,Q1 CFtY1OO i SM8222D-1887 4n4Y22 J. JRGEVICH
NUT
7€84 4 t . fi NH3 as N in liquid 0.02 0.04 nqt ea N EPA 350.1 REV 2 4 28/22 ALWILLUAMS
E701177 NO2+NO3 ae N in Riquid
0.04 1.7 P nqR es N EPA 3632 REV 2 42622 ALWILLIAMS
7723-144 Phosphorus total as P in liquid
0.02 0.48 tnW1 u P EPA 365.1 REV 2 4128/22 AIWILLIAMS
T[0V. N
Total Kjeldah1 N as N in liquid
0.3 netss N EPA 351.2 REV 2 Sf3122 ALWILLIAMs
WET
Residue Suspended in liquid 2.8 2.8 U,Y not 3M 2540 D 2015 42522 ALWIWAMS
MET
7440.02-0 NI by ICPMS 2 0 2.0 U uy+1 EPA200.8 Rev5.4 42722 JJURGEV1CH
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street I 1611 Mat] Service Center I Raleigh, North Carolina 27699-161
919 707 9000

VC DNAe. raboralarySeason atinrllr/SampteComments/Qualifirr4Drfmttumr
Sample ID ACIIIS$
CAS # Analvte Name
EQ.
St1>ttlllL
LNALthE
Unita Mamma
Method
Date Ito idued.by
M IC:Fecal Cd6am•B3-E*Umated-Flbws have counts .60 OR.80
LOC:Fecal Col orm-Q1Sample exceeded holding time poor to receipt at lab
UIC. BOD415-Esmnated-GGA standard recovery was a 1080-30 5ngll
AC96354
Issalardsoatiala
North Carolina Division of Water Resources Water Sciences Scct'on Laboratory Results
Lac.Raw B ltegi WWTP
County allICSRa Collector Meal Vain)
Raglan Btlldeh Report To MCI location I:
River BRIM Wm Collect Dee QM= Priority eaMEMnre
Emergency Collet Tine. CA Semple Makie Still112161,11
CDC Yeull4o Sample Depth Lac Type InOstat
Final Report
if this report is labeled preliminary report, the results have not been validated. Da not use for Regulatory purposes.
CA3 # Anottsilloox Eca4 dttalllkr twill flag Dale sluludediax
LAB
Sample temperature at receipt by lab 0.6 'C 420122 MSWIFT
SampleID: agnat
PO Number ri
Date Recir sd: 041202 22
Time Received fJ�
Labwa is LoginID
Delivery Method iiiedligibmg
Final Report Date gm
Report Print Date Maga
130D. 5-Day In liquid
MIC
2.0 110 GS rig& SPA 5210 B•2001 401/22 .1.1URGEVICH
Residue Suspended in liquid
50
WET
142
mg1L SPA 2540 D-2015 4/25122 ALWILLIAMS
Vr 1114Ak LaboratorySerhrxo 1 jstd 1SampfiComrmrnls/Qrtd&fur.Drfinrranu
S iipl. tD AC16364
CAS # Analyte Name
Res U
Saimaa&
Mattis&
Unita Mariam
Date ]fit
a.male gilt.
MIC BOD-05- aurn ed-GGA standad recovery was c tg8*i.30 trngll
All results except effluent fecal coliform were within acceptable ranges. The high fecal count could have
been due to a contaminated fecal bottle.
I would like to thank the staff for their assistance with this inspection. If you have any questions about this
letter or the inspection, please contact Mitch Hayes at mitch.haes ncdenr.gpv or at 919.791.4261.
Sincerely,
WQROS files, Laserfiche
Vanessa Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources NC DEQ
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Cente; I Raleigh, North Carolina 27699-1611
919 707 9000

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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 H 2 12 I 3 1 NC0020389 111 12 22/04/20 17
Type
181 s I
I I l i l
Inspector
191
Fac Type
I 201
21IIiI 1111I III I I I I I I I I I I I I I I I I I
III
I I I I I 166
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA
67I I 70 �3 I 71 I I 72 Lill
l ! I —I
Reserved
731 1 174 71 1 1 1 1 1 1 I80
Section B: FacilityilData
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
POTW name and NPDES permit Number)
Benson WWTP
770 Hannah Creek Rd
Benson NC 27504
Entry Time/Date
07:30AM 22/04/20
Permit Effective Date
21/05/01
Exit Time/Date
11:OOAM 22/04/20
Permit Expiration Date
26/04/30
Name(s) of Onsite Representative(s)Rtles(s)1Phone and Fax Number(s)
1/1
Brian Peter Leavittl1919-894-2373 /
Brian Peter Leavitt/ORC/919-894-2373/
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Keith Ryker Langdon,PO Box 69 Benson NC 275040069/Town
Manager/919-894-4953/9198941283 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Flow Measurement Operations & Maintenar Records/Reports
ll Self -Monitoring Progran Sludge Handling Dispos Facility Site Review Effluent/Receiving Wate
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(s) Agency/Office/Phone and Fax Numbers Crate
Mitchell S Hayes DWR/RRO WQ/919-791-4200/
/14ay a3, 2.-o2 2-
Signa re of Management Q eviewer Agency/Office/Phone and Fax Numbers Dale
ifr
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page# 1

NPDES
NC0020389
Ji1 12
yr/mo/day
22/04/20
17
Inspection Type
18u
(Cont.)
1
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The permit was issued April 12, 2021, became effective May 5, 2021 and will expire April 30, 2026.
Brian Leavitt is listed as the ORC and Christopher M. Brigman is listed as the back-up ORC; however,
BIMS status has Mr. Brigman listed as invalid as a result of not having his course certificates not
recorded. Please send in copies of Mr. Bridgman's course certificates to [e-mail]
The 1.9 MGD facility consists of the following units: arc bar screen, grit removal, dual manual bar
screens, Parshall flume with flow measurement, influent composite sampler, three (3) influent screw
pumps, three (3) oxidation ditches (ditches 1 and 3 are used for aeration and ditch 2 is kept anoxic
for nutrient removal), five (5) secondary clarifiers, a RAS and WAS pump station, five (5) tertiary
filters, a liquid chlorine contact basin, a dechiorination basin with post aeration, an effluent flow meter,
effluent composite flow meter, one (1) concrete lined sludge lagoon, two stabilization lagoons/influent
flow storage and backup generator.
At the time of inspection, the arc bar screen and the grit removal system were operating normally.
Screenings are conveyed to a dumpster and disposed in a landfill. One screw pump was in use due
to low influent flow, the other two screw pumps are operational but not in use. All rotors in the ditch's
1 and 3 were in operational and run on timers. Foam in the ditches covered Tess than 50% of the
surface area. All five secondary clarifiers were in use. Effluent flowing off the weirs appeared clear.
Four out five tertiary filters were on line. The number 1 filter was not operational due to broken
aeration disc. Currently there is no repair for the disc. The tertiary filters will be replaced with disc
filtration during the next upgrade. Effluent in the dechiorination tank / aeration tank and at the effluent
appeared clear with no foam or solids. All three sludge lagoons were near full with a staff gage
reading of 2.75 feet in lagoon 1.
Discharge Monitoring Reports for the period February 2020 through March 2022 were reviewed for
compliance with permit limits and monitoring requirements. An NOD was issued for February 2020 for
exceeding monthly flow limit; a NOV was issued for exceeding flow for January 2021; a enforcement
action was issued for exceeding monthly flow limit for February 2021; a NOD was issued for
exceeding weekly BOD average for April 2021; a enforcement action was issued for exceeding weekly
average ammonia nitrogen; a enforcement action was issued for exceeding monthly average for BOD
and ammonia nitrogen for September 2021; and an enforcement action was issued for exceeding
weekly average for BOD and ammonia nitrogen for October 2021.
Commercial lab results, chain of custody records, and bench sheets were compared with data
submitted on the DMR for the month of March 2022. No discrepancies were noted.
The Benson WWTP laboratory # 196 analyzes the following parameters: pH, temperature, DO, TRC,
fecal coliform, and conductivity. All other parameters are analyzed by Environment 1 and Meritech
Inc. All reagents were within expiration date.
Page# 2

Permit: NC0020389
Owner - Facility: Benson WWTP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? • ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable • ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the perrnittee 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: No special conditions. Permit was renewed April 12, 2021.
Record Keeping
Are records kept and maintained as required by the permit?
Is all 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?
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 COCs
Are DMRs complete: do they include all permit parameters?
Has the facility submitted its annual compliance report to users and DWQ?
(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?
Yes No NA NE
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Page# 3

Permit: NC0020389
Inspection Date: 04/20/2022
Owner - Facility: Benson WWTP
Inspection Type: Compliance Sampling
Record Keeping
Is a copy of the current NPDES permit available on site?
Facility has copy of previous year's Annual Report on file for review?
Comment:
Yes No NA NE
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Flow Measurement - Influent Yes No NA NE
# Is flow meter used for reporting? 0 • 0 ❑
Is flow meter calibrated annually? • ❑ ❑ ❑
Is the flow meter operational? • 0 0 0
(If units are separated) Does the chart recorder match the flow meter? • 0 0 0
Comment- Effluent flow meter used for reporting.
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting? • ❑ 0 0
Is flow meter calibrated annually? • ❑ 0 0
Is the flow meter operational? • 0 ❑ ❑
(If units are separated) Does the chart recorder match the flow meter? MI 0 0 0
Comment:
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? • 0 0 0
Is the wet well free of excessive grease? • ❑ 0 0
Are all pumps present? • 0 0 0
Are all pumps operable? • 0 ❑ 0
Are float controls operable? • 0 0 0
Is SCADA telemetry available and operational? • ❑ 0 0
Is audible and visual alarm available and operational? 0 0 0 •
Comment: 4 screw pumps one currently in use due to low influent flow.
Bar Screens
Type of bar screen
a.Manual
b.Mechanical
Are the bars adequately screening debris?
Yes No NA NE
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Page# 4

Permit: NC0020389
Owner - Facility: Benson WIMP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Bar Screens Yes No NA NE
Is the screen free of excessive debris? • 0 0 0
Is disposal of screening in compliance? • 0 0 0
Is the unit in good condition? • Cl 0 0
Comment:
Grit Removal
Type of grit removal
a.Manual
b.Mechanical
Is the grit free of excessive organic matter?
Is the grit free of excessive odor?
# Is disposal of grit in compliance?
Comment:
Yes No NA NE
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Secondary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? • ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier? ■ 0 0 0
Are weirs level? • ❑ ❑ ❑
Is the site free of weir blockage? MOOD
Is the site free of evidence of short-circuiting? • 0 0 0
Is scum removal adequate? •❑ ❑ ❑
Is the site free of excessive floating sludge? • 0 0 0
Is the drive unit operational? • 0 0 0
Is the return rate acceptable (low turbulence)? • 0 0 0
Is the overflow clear of excessive solids/pin floc? ■ ❑ ❑ ❑
Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) • 0 0 0
Comment' 5 secondary clarifiers. Sludge blankets are kept between 2 to 3 feet.
Oxidation Ditches Yes No NA NE
Are the aerators operational? II 0 0 0
Are the aerators free of excessive solids build up? • 0 0 0
# Is the foam the proper color for the treatment process? • 0 0 0
Does the foam cover Tess than 25% of the basin's surface? •❑ ❑ ❑
Page# 5

Permit: NC0020389
Owner - Facility: Benson WWTP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Oxidation Ditches
Is the DO level acceptable?
Are settleometer results acceptable (> 30 minutes)?
Is the DO level acceptable?(1.0 to 3.0 mg/I)
Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes)
Yes No NA NE
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Comment. Ditches 1 and 3 are used for aeration and ditch 2 is kept anoxic for nutrient removal.
Nutrient Removal
# Is total nitrogen removal required?
# Is total phosphorous removal required?
Type
# Is chemical feed required to sustain process?
Is nutrient removal process operating properly?
Comment• chemical feed not required.
Filtration (Hiuh Rate Tertiary)
Type of operation:
Is the filter media present?
Is the filter surface free of clogging?
Is the filter free of growth?
Is the air scour operational?
Is the scouring acceptable?
Is the clear well free of excessive solids and filter media?
Comment: The number one cell is not in operation due to broken discs.
Standby Power
Is automatically activated standby power available?
Is the generator tested by interrupting primary power source?
Is the generator tested under load?
Was generator tested & operational during the inspection?
Do the generator(s) have adequate capacity to operate the entire wastewater site?
Is there an emergency agreement with a fuel vendor for extended run on back-up
power?
Is the generator fuel level monitored?
Yes No NA NE
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Biological
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Yes No NA NE
Down flow
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Yes No NA NE
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Page# 6

Permit: NC0020389 Owner - Facility: Benson WWTP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Standby Power
Comment: Generators are operated once a week.
Yes No NA NE
De -chlorination Yes No NA NE
Type of system ? Liquid
Is the feed ratio proportional to chlorine amount (1 to 1)? 11000
Is storage appropriate for cylinders? ❑ ❑ • 0
# Is de -chlorination substance stored away from chlorine containers? ■ ❑ ❑ ❑
Comment:
Are the tablets the proper size and type? ❑ ❑ • 0
Are tablet de -chlorinators operational? ❑ ❑ • ❑
Number of tubes in use?
Comment' Liquid Sodium thiosulfate is used for dechlor.
Lagoons Yes No NA NE
Type of lagoons? Facultative
# Number of lagoons in operation at time of visit? 3
Are lagoons operated in? Series
# Is a re -circulation line present? 11000
is lagoon free of excessive floating materials? • ❑ ❑ ❑
# Are baffles between ponds or effluent baffles adjustable? ■ ❑ ❑ ❑
Are dike slopes clear of woody vegetation? 111000
Are weeds controlled around the edge of the lagoon? •❑ ❑ ❑
Are dikes free of seepage? • ❑ ❑ ❑
Are dikes free of erosion? • ❑ ❑ ❑
Are dikes free of burrowing animals? •❑ ❑ ❑
# Has the sludge blanket in the lagoon (s) been measured periodically in multiple •❑ ❑ ❑
locations?
# If excessive algae is present, has barley straw been used to help control the growth? ❑ ❑ • ❑
Is the lagoon surface free of weeds? 11000
Is the lagoon free of short circuiting? •❑ ❑ ❑
Comment: staff gape reading in lagoon 1 was 2.75 feet.
Laboratory Yes No NA NE
Page# 7

Permit: NC0020389
Owner - Facility: Benson WWTP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? • 0 0 0
Are all other parameters(excluding field parameters) performed by a certified lab? • 0 ❑ 0
# Is the facility using a contract lab? • ❑ ❑ Cl
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 11 0 0 0
degrees Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? • ❑ 0 ❑
Incubator (BOD) set to 20.0 degrees Celsius +1- 1.0 degrees? ❑ ❑ • 0
Comment. Certified labs used, Environment 1 and Meritech Inc.
Disinfection -Liquid Yes No NA NE
Is there adequate reserve supply of disinfectant? • ❑ ❑ 0
(Sodium Hypochlorite) Is pump feed system operational? • 0 0 ❑
Is bulk storage tank containment area adequate? (free of leaks/open drains) • ❑ 0 0
Is the level of chlorine residual acceptable? •❑ ❑ ❑
Is the contact chamber free of growth, or sludge buildup? • ❑ ❑ ❑
Is there chlorine residual prior to de -chlorination? • ❑ 0 ❑
Comment:
Influent Sampling Yes No NA NE
# Is composite sampling flow proportional? • ❑ 0 0
Is sample collected above side streams? 11 0 0 ❑
Is proper volume collected? • ❑ 0 ❑
Is the tubing clean? 11 0 ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 • 0 0 ❑
degrees Celsius)?
Is sampling performed according to the permit? • 0 0 ❑
Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? •❑ ❑ ❑
Is sample collected below all treatment units? • 0 0 0
Is proper volume collected? 11 0 0 0
Is the tubing clean? • 0 0 ❑
Page# 8

Permit: NC0020389 Owner - Facility: Benson WWTP
Inspection Date: 04/20/2022 Inspection Type: Compliance Sampling
Effluent Sampling
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type
representative)?
Comment:
Yes No NA NE
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Chemical Feed Yes No NA NE
Is containment adequate? • ❑ ❑ ❑
Is storage adequate? M 0 ❑ ❑
Are backup pumps available? •❑ ❑ ❑
Is the site free of excessive leaking? • ❑ ❑ ❑
Comment: Sodium hydroxide is added at the influent headworks.
Page# 9

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