WQ0021828_2020 Residual Annual Report_20210222

Initial Review
Reviewer Thornburg, Nathaniel
Is this submittal an application? (Excluding additional information.)*
r Yes r No
If not an application what is the submittal type?*
Annual Report Year*
Permit Number (IR)*
Applicant/Permittee
Email Notifications
.......................................................... .............
Does this need review by the hydrogeologist?*
Regional Office
CO Reviewer
Admin Reviewer
* Annual Report
* Residual Annual Report
r Additional Information
r Other
2020
WQ0021828
Orange Water And Sewer Authority
r Yes c No
Raleigh

Submittal Form
Project Contact Information
Rease provide information on the person to be contacted by NDB Staff regarding electronic receipt, another correspondence. ittal, confirmation of iptd othd
.......................................................... ronc su_ -
Name * Monica Dodson
Email Address*
[e-mail]
Project Information
........ ......... ..........................................................................................................................................
Application/Document Type* r New (Fee Req ui red)
r Modification - Major (Fee Required)
r Renewal with Major Modification (Fee
Required)
r Annual Report
r Additional Information
r Other
Phone Number*
9195374205
O Modification - Minor
C Renewal
C GW-59, NDMR, NDMLR, NDAR-1,
NDAR-2
IT Residual Annual Report
r Change of Ownership
We no longer accept these monitoring reports through this portal. Please click on the link below and it will take you to the correct form.
https://edocs.deq.nc.gov/Forms/NonDischarge_Monitoring_Report
Permit Type:* r Wastewater Irrigation r High -Rate Infiltration
r Other Wastewater r Reclaimed Water
r Closed -Loop Recycle r Residuals
r Single -Family Residence Wastewater r Other
Irrigation
Permit Number:* WQ0021828
Fbs Current Existing perm number
Applicant/Permittee Address* 400 Jones Ferry Road, Carrboro, NC 27510
Facility Name * OWASA DCAR
Please provide comments/notes on your current submittal below.
Orange Water and Sewer Authority - Class A Residuals Annual Report
At this time, paper copies are no longer required. If you have any questions about what is required, please contact Nathaniel Thornburg
at [e-mail].
Please attach all information required or requested for this submittal to be reviewed here.*
(Application Form Engineering Rans, Specifications, Calculations, Bc.)
Orange Water and Sewer Authority - Biosolids Class A
5.86MB
Annual Report 2020.pdf
Upload only 1 PCF document (less than 250 M3). Miltiple docurrents must be combined into one FDF file unless file is larger than
upload linit.
* W By checking this box, I acknowledge that I understand the application will not be
accepted for pre -review until the fee (if required) has been received by the Non -
Discharge Branch. Application fees must be submitted by check or money order
and made payable to the North Carolina Department of Environmental Quality
(NCDEQ). I also confirm that the uploaded document is a single PDF with all parts
of the application in correct order (as specified by the application).
Mail payment to:
NCDEQ — Division of Water Resources
Attn: Non -Discharge Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Signature
M0f1iG.4 PVP60AI
Submission Date 2/22/2021

Orange Water and Sewer Authority
OWASA is Carrboro-Chapel Hill's not -for -profit public service agency
delivering high quality water, wastewater, and reclaimed water services.
February 22, 2021
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
SUBJECT: ANNUAL LAND APPLICATION — BIOSOLIDS REPORT 2020
NON -DISCHARGE PERMIT NO. WQ0021828
MASON FARM WASTEWATER TREATMENT PLANT
ORANGE WATER & SEWER AUTHORITY - CHAPEL HILL, NC
The Orange Water and Sewer Authority (OWASA) owns and operates the Mason Farm
Wastewater Treatment Plant located in Chapel Hill, North Carolina (NC). This facility serves
the Chapel Hill, Carrboro communities including the University of North Carolina at Chapel
Hill; all of which are located in southeastern Orange County. The plant discharge is regulated by
NPDES Permit NC0025241. The Class A land application program is regulated by Non -
Discharge (Permit No. WQ0021828) issued by the State of North Carolina Department of
Environmental Quality - Division of Water Resources.
This report documents that the biosolids generated during calendar year 2020 are in compliance
with 40 CFR Part 503 Federal Regulations, 15A NCAC 2T rules. All biosolids produced during
the 2020 calendar year were of Class A quality, therefore no Class B was land applied.
If there are any questions regarding this submittal, please contact me at your convenience.
Sincerely,
M Zi=dson
Wastewater Treatment and Biosolids Recycling Manager
cc: file
400Jones Ferry Road,Carrboro, NC 27510 o,_;••'°; 919-968-4421 [e-mail] 0 @OWASAI www.owasa.org

ANNUAL LAND APPLICATION CERTIFICATION FORM
WQ Permit#: WQ0021828 County: ORANGE Year:
Facility Name (as shown on permit):
Land Application Operator:
Orange Water & Water Sewer Authority
Dylan Bowers
2020
Phone: [phone]
Land application of residuals as allowed by the permit occurred during the past calendar year?
0 Yes ❑ No - If No, skip Part A, and Part B and proceed to Part C. Also, If residuals were
generated but not land applied, please attach an explanation on how the residuals were handled.
Part A - Residuals Application Summary:
Total number of application fields in thepermit:
83
Total number of fields utilized for land application during the year:
52
Total amount of dry tons applied during the year for all application sites:
747.39
Total number of acres utilizes for land application during the year:
725.82
Part B - Annual Compiance Statement:
Facility was compliant during calendar year 2020 with all conditions of the land application permit
(including but not limited to items 1-13 below) issued by the Division of Water Resources. 0 Yes ❑ No
If no please, provide a written description why the facility was not compliant, the dates, and explain corrective action
taken.
1) Only residuals approved for this permit were applied to the permitted sites.
2) Soil pH was adjusted as specified in the permit and lime was applied (if needed) to achieve a soil pH of at least 6.0 or
the limit specified in the permit.
3) Annual soils analysis were performed on each site receiving residuals during the past calendar year and three (3) copies
of laboratory results are attached.
4) Annual TCLP analysis (if required) was performed and three (3) copies of certified laboratory results are attached.
5) All other monitoring was performed in accordance with the permit and reported during the year as required and three (3)
copies of certified laboratory results are attached.
6) The facility did not exceed any of the Pollutant Concentration Limits in 15A NCAC 02T .1105(a) or the Pollutant
Loading Rates in 15A NCAC 02T .1105(b) (applicable to 40 CFR Part 503 regulated facilities).
7) All general requirements in as specified in the Land Application Permit were complied with (applicable to 40 CFR Part
503 regulated facilities).
8) All monitoring and reporting requirements in 15A NCAC 02T .1111 were complied with (applicable to 40 CFR Part 503
regulated facilities).
9) All operations and maintenance requirements in the permit were complied with or, in the case of a deviation, prior
authorization was received from the Division of Water Resources.
10) No contravention of Ground Water Quality Standards occurred at a monitoring well or explanations of violations are
attached to include appropriate actions and remediations.
11) Vegetative cover was maintained and proper crop management was performed on each site receing residuals, as
specified in the permit.
12) No runoff of residuals from the application sites onto adjacent property or nearby surface waters has occurred.
13) All buffer requirements as specified on the permit were maintained during each application of residuals.
Part C - Certification:
"I certify, under penalty of law, that the above information is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information, including the
possibility of fines and imprisonment for knowing violations."
Monica Dodson - WWTP Manager
Permittee Name and Title (type or print)
2-22-2021
Sig ature of Pcimittee Date
Signature of Preparer* Date Signature of Land Applier Date
(if different from Permittee) (if different from Permittee and Preparer)
* Preparer is defined in 40 CFR Part 503.9 (r) and 15A NCAC 02T .1102 (26) DENR FORM ACF (12/2006)

ORANGE WATER & SEWER
AUTHORITY
Mason Farm Wastewater Treatment Plant
NPDES Permit # NCO025241
2020 Annual Land Application Report
Land Application Permit
Class -A Permit # WQ0021828

OWASA Mason Farm Wastewater Treatment Plant
Anaerobic Digestion Process
Summary Information Calendar Year 2020
The Mason Farm Wastewater Treatment Plant Anaerobic Digestion Process provides treatment for both
primary and waste activated sludges in a four -stage digestion process. The four anaerobic digestion tanks
provide approximately 1,800,000 gallons of digestion capacity and are operated in series. Normally the first
three anaerobic digesters are maintained in the thermophilic temperature range, in excess of 1250 F and the
fourth anaerobic digester is operated in the mesophilic temperature range, less then 1151 Fahrenheit. For the
2020 calendar year, the average temperature and time for biosolids processed through the Class A
thermophilic process was 138.80 F and 29 hours. The digester operation -temperatures, recirculation and
mixing rates are monitored continuously; in addition to gas production. Process control testing (VA/ALK
ratios, pH and alkalinity, etc.) is checked routinely. Transfers into and out of the various digester tanks are
monitored and recorded.
The Mason Farm Wastewater Treatment Plant anaerobic digestion operating conditions have been carefully
monitored for the period of January 1, 2020 through December 31, 2020. The review confirms the following:
Average daily wastewater flow 7.7 MGD
Average daily dry tons biosolids recycled 3.7 Dry Tons
Average volatile solids reduction thru anaerobic digestion 59.9%
Average anaerobic (total) digestion time 43 Days
FECAL COLIFORM
JAN-FEB
MAR -APR
MAY-JUN
JUL-AUG
SEP-OCT
NOV-DEC
Class A max
12
126
107
107
38
13
Class A avg
11
82
74
36
23
10
PARAMETER
JAN-FEB
MAR -APR
MAY-JUN
JUL-AUG
SEP-OCT
NOV-DEC
Percent Solids (%)
1.9
2.22
2.18
2.18
2.14
1.11
Arsenic (As)
<1.32
2.43
2.44
2.71
<2.34
<0.09
Cadmium (Cd)
0.863
0.779
0.648
1.72
0.948
0.09
Copper (Cu)
282
241
190
283
449
184
Lead (Pb)
<0.658
2.77
5.65
4.05
4.37
0.69
Mercury (Hg)
0.532
0.459
0.45
0.569
0.589
0.26
Molybdenum (Mo)
7.98
6.22
<1.15
6.32
6.15
<0.45
Nickel (Ni)
14
12.8
10.1
15.1
17
1.11
Selenium (Se)
3.99
3.79
<1.15
2.92
3.6
<0.09
Zinc (Zn)
858
751
619
836
834
70.5
Aluminum
56800
45800
36600
57400
53400
3748
Calcium
22400
17500
13900
16900
18300
1297
Magnesium
5970
5390
4630
5130
5030
364
Potassium
9640
1 8160
1 8400
1 7410
1 6640
1 885
Sodium
6190
908
4640
4740
5620
718
SAR
1.309
0.229
1.367
1.210
1.388
0.478

ORANGE WATER AND SEWER AUTHORITY (OWASA)
MASON FARM WASTEWATER TREATMENT PLANT
SIMPLIFIED ANAEROBIC DIGESTION PROCESS FLOW SCHEMATIC
Primary Sludge & Waste Activated Sludge
RDT = ROTARY DRUM THICKENER
RDT RDT
#1 #2
(COLD, THICKENED SLUDGE TO DIGESTION)
n
1 ST STAGE
(THERMOPHILIC TEMPERATURE)
HEAT EXCHANGER &
RECIRCULATION PUMP
2nd STAGE
(THERMOPHILIC TEMPERATURE)
HEAT EXCHANGER &
RECIRCULATION PUMP
3rd STAGE
(THERMOPHILIC TEMPERATURE)
HEAT EXCHANGER &
RECIRCULATION PUMP
4th STAGE
(MESOPHILIC TEMPERATURE)
HEAT EXCHANGER &
RECIRCULATION PUMP O
ANAEROBIC
DIGESTER #4
ANAEROBIC
DIGESTER #3
lu
ANAEROBIC
DIGESTER #2
ANAEROBIC
DIGESTER #1
BIOSOLIDS TO IN -PLANT t
STORAGE TANKS
TEMPERATURE RANGE
135F-140F
CONTINUOUS OR BATCH FEED,
BATCH DISCHARGE
TEMPERATURE RANGE
135F-140F
BATCH FEED & DISCHARGE,
HOLD BATCH - REQ'D. HOURS
EPA 503 TIME & TEMPERATURE
REQUIREMENTS MET IN THIS TANK
40 CFR Part 503.32-3ii.D.
TEMPERATURE RANGE
115F-125F
BATCH FEED, NEAR
CONTINUOUS DISCHARGE
TEMPERATURE RANGE
< 115 F
CONTINUOUS FEED, r
BATCH DISCHARGE I
STORAGE
TANK
#1
STORAGE
AN
#2
LIQUID BIOSOLIDS TO:
LAND APPLICATION or
OFFSITE STORAGE
DEWATERED BIOSOLIDS TO:
COMMERCIAL COMPOST FACILITY

TABLE OF CONTENTS
SECTION NO. TITLE
Class A Distribution and Marketing / Surface
Disposal Certification Forms
Form DMSDF
II Annual Residual Sampling Summary Forms
Form RSSF
III Annual Pathogen and Vector Attraction
Reduction Form (503) Rules
Form PVRF 503
IV Lab Sheets
Analytical Data

Section I
Class A Distribution and Marketing /
Surface Disposal Certification Forms

CLASS A ANNUAL DISTRIBUTION AND MARKETING/ SURFACE DISPOSAL CERTIFICATION AND SUMMARY FORM
WQ PERMIT #: WQ0021828 FACILITY NAME: Orange Water & Sewer Authority
PHONE: [phone] COUNTY: ORANGE OPERATOR: Dylan Bowers
FACILITY TYPE (please check one): ❑ Surface Disposal (complete Part A (Source(s) and "Residual In" Volume only) and Part C)
0 Distribution and Marketing (complete Parts A, B, and C)
Was the facility in operation during the past calendar year? Yes 0 No ❑ o If No skip parts A, B, C and certify form below
Part A*:
Part B*:
Month
Sources(s) (include NPDES # if
applicable)
Volume (dry tons)
tio
Recipient Informan
Amendment/
Bulking Agent
Residual In
Product Out
Name(s)
Volume (dry tons)
Intended use(s)
January
Mason Farm WWTP NCO025241
20.3
McGill Environmental Inc
20.3
Composting
February
Mason Farm WWTP NCO025241
71.61
McGill Environmental Inc
71.61
Composting
March
Mason Farm WWTP NCO025241
81.53
McGill Environmental Inc
81.53
Composting
April
Mason Farm WWTP NCO025241
56.47
McGill Environmental Inc
56.47
Composting
May
Mason Farm WWTP NCO025241
82.45
McGill Environmental Inc
82.45
Composting
June
Mason Farm WWTP NCO025241
76.7
McGill Environmental Inc
76.7
Composting
July
Mason Farm WWTP NCO025241
5.35
McGill Environmental Inc
5.35
Composting
August
Mason Farm WWTP NCO025241
26.65
McGill Environmental Inc
26.65
Composting
September
Mason Farm WWTP NCO025241
48.15
McGill Environmental Inc
48.15
Composting
October
Mason Farm WWTP NCO025241
24.34
McGill Environmental Inc
24.34
Composting
November
Mason Farm WWTP NCO025241
25.47
McGill Environmental Inc
25.47
Composting
December
Mason Farm WWTP NCO025241
68.37
McGill Environmental Inc
68.37
Composting
Total from FORM DMSDF (sup)
#REF!
#REF!
#REF!
#REF!
Totals:
Annual (dry tons):
0
0
587.39
587.39
Amendments used: 7 1 Bulking Agent(s) used:
* If more space is required, attach additional information sheets (FORM DMSDF (supp)): Total Number of Form DMSDF (Supp)
Part C:
Facility was compliant during the past calendar year with all conditions of the land application permit ❑p Yes
(including but not limited to items 1-3 below) issued by the Division of Water Resources: ❑ No If No, Explain in Narritive
1. All monitoring was done in accordance with the permit and reported for the year as required and three (3) copies of certified laboratory results are attached.
2. All operation and maintenance requirements were compiled with or, in the case of a deviation, prior authorization was received from the Division of Water Resources.
No contravention of Ground Water Quality Standards occurred at a monitoring well.
"I certify, under penalty of law, that the above information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant
penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
2-22-2021
Signature of Pennittee Date
"Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
Signature of Preparer* *
(if different from Permittee)
Date
DENR FORM DMSDF (12/2006)

CLASS A ANNUAL DISTRIBUTION AND MARKETING/ SURFACE DISPOSAL CERTIFICATION AND SUMMARY FORM
Q PERMIT #: WQ0021828 FACILITY NAME: Orange Water & Sewer Authority
PHONE: [phone]: COUNTY: ORANGE OPERATOR: Dylan Bowers
FACILITY TYPE (please check one): Surface Disposal (complete Part A (Source(s) and "Residual In" Volume only) and Part C)
Distribution and Marketing (complete Parts A, B, and C)
Was the facility in operation during the past calendar year? Yes B No ❑ o If No skip parts A, B, C and certify form below
PartA*-
Part B*•
Month
Sources(s) (include NPDES # if
applicable)
Volume (dry tons)
Recipient Information
Amendment
Bulking Agent
Residual In
Product Out
Name(s)
Volume(dry
tons
Intended use(s)
January
Mason Farm WWTP NCO025241
0
-
0
Land Applied
February
Mason Farm WWTP NCO025241
0
-
0
Land Applied
March
Mason Farm WWTP NCO025241
18.9
Sockwell
18.9
Land Applied
April
Mason Farm WWTP NCO025241
90.7
OWASA 11
90.7
Land Applied
May
Mason Farm WWTP NCO025241
4.1
Hackney
4.1
Land Applied
June
Mason Farm WWTP NCO025241
30.2
Hackney
30.2
Land Applied
July
Mason Farm WWTP NCO025241
108.9
Strayhorn
108.9
Land Applied
August
Mason Farm WWTP NCO025241
29.4
Strayhorn
29.4
Land Applied
September
Mason Farm WWTP NCO025241
38.9
OWASA 5
38.9
Land Applied
October
Mason Farm WWTP NCO025241
14.8
OWASA 5
14.8
Land Applied
November
Mason Farm WWTP NCO025241
9.4
OWASA 11
9.4
Land Applied
December
Mason Farm WWTP NCO025241
10.9
OWASA 11
10.9
Total from FORM DMSDF (sup)
377-1
391
Totals: 7
Annual (dry tons):
1 0
0
747.4
747.4
Amendment(s) used: I I Bulking Agent(s) used:
* If more space is required, attach additional information sheets (FORM DMSDF (supp)): Total Number of Form DMSDF (Supp)l 2
Part C:
Facility was compliant during the past calendar year with all conditions of the land application permit Yes
(including but not limited to items 1-3 below) issued by the Division of Water Resources: ❑ Nag If No, Explain in Narritive
1. All monitoring was done in accordance with the permit and reported for the year as required and three (3) copies of certified laboratory results are attached.
2. All operation and maintenance requirements were compiled with or, in the case of a deviation, prior authorization was received from the Division of Water Resources.
3. No contravention of Ground Water Quality Standards occurred at a monitoring well.
"I certify, under penalty of law, that the above information is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
rwtee l �v�ean, 2-22-2021
Sig aturc of Pcrmittee Date Signature of Preparer* * Date
(if different from Permittee)
**Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)

CLASS A ANNUAL DISTRIBUTION AND MARKETING/ SURFACE DISPOSAL CERTIFICATION AND SUMMARY FORM
Supplemental Information
WQ PERMIT #: WQ0021828 FACILITY NAME: Orange Water & Sewer Authority
PHONE: [phone] COUNTY: ORANGE OPERATOR: Dylan Bowers
FACILITY TYPE (please check one): Surface Disposal (complete Part A - "Month", "Source(s)" and "Residual In" columns only)
Distribution and Marketing (complete Parts A, and B)
Part A*:
Part B*:
Month
Sources(s) (include NPDES # if
applicable)
Volume (dry tons)
Recipient Information
Amendment/
Bulking Agent
Residual In
Product Out
Name(s)
Volume
(dry tons)
ended use(s)
March
Mason Farm WWTP NCO025241
21.3
Crandall
21.3
Land Applied
March
Mason Farm WWTP NCO025241
3.5
Lemons
3.5
Land Applied
April
Mason Farm WWTP NCO025241
44.1
Lemons
44.1
Land Applied
June
Mason Farm WWTP NCO025241
18.1
Andrews
18.1
Land Applied
June
Mason Farm WWTP NCO025241
1.2
Strayhorn
1.2
Land Applied
August
Mason Farm WWTP NCO025241
32.9
Bowers
32.9
Land Applied
September
Mason Farm WWTP NCO025241
22
OWASA 11
22
Land Applied
September
Mason Farm WWTP NCO025241
9
Thompson
9
Land Applied
September
Mason Farm WWTP NCO025241
19.2
Bowers
19.2
Land Applied
September
Mason Farm WWTP NCO025241
29.9
Hadley
29.9
Land Applied
October
Mason Farm WWTP NCO025241
66.1
Thompson
66.1
Land Applied
October
Mason Farm WWTP NCO025241
51.3
Crawford
51.3
Land Applied
November
Mason Farm WWTP NCO025241
25.8
OWASA 5
25.8
Land Applied
Totals:
Annual (dry tons):
0
0
344.4
344.4
Amendment(s) used: I Bulking Agent(s) used:
* If more space is required, attach additional information sheets (FORM DMSDF (supp)): Total Number of Form DMSDF (Supp) 2

CLASS A ANNUAL DISTRIBUTION AND MARKETING/ SURFACE DISPOSAL CERTIFICATION AND SUMMARY FORM
Supplemental Information
WQ PERMIT #: WQ0021828 FACILITY NAME: Orange Water & Sewer Authority
PHONE: [phone] COUNTY: ORANGE OPERATOR: Dylan Bowers
FACILITY TYPE (please check one): Surface Disposal (complete Part A - "Month", "Source(s)" and "Residual In" columns only)
Distribution and Marketing (complete Parts A, and B)
Part A*:
Part B*:
Month
Sources(s) (include NPDES # if applicable)
Volume (dry tons)
Recipient Information
Amendment/ Bulking Agent
Residual
In
Product
Out
Name(s)
Volume
d tons)Mended
use(s)
November
Mason Farm WWTP NCO025241
15.4
Thompson
15.4
Land Applied
November
Mason Farm WWTP NCO025241
13.9
Ray
13.9
Land Applied
November
Mason Farm WWTP NCO025241
7.9
Bowers
7.9
Land Applied
December
Mason Farm WWTP NCO025241
9.4
Bowers
9.4
Land Applied
Totals:
Annual (dry tons):
0
0
46.6
46.6
Amendment(s) used: ulking Agent(s) used:
* If more space is required, attach additional information sheets (FORM DMSDF (supp)): Total Number of Form DMSDF (Supp) 2

Section II
Annual Residual Sampling Summary
Forms

ANNUAL RESIDUAL SAMPLING SUMMARY FORM
Please note that your permit may contain additional parameters to be analyzed. The parameters can be reported in FORM RSSF - B
WQ Permit Number: W00001169 (B) and WQ0021828 (A)
Facility Name: Orange Water & Sewer Authority
Residual Source WQ # or NCO025241
NPDES #:
WWTP Name: Mason Farm WWTP
Residual Analvsis Data
1) Research & Analytical Labs
2) OWASA WWTP Lab
3)
4)
5)
Parameter
(mg/kg)
Conc.
Limit
(mg/kg)'
Sample or Composite Date
1/6/20
3/23/20
5/11/20
7/14/20
9/14/20
11/9/20
Percent Solids (%)
NA
1.9
2.22
2.18
2.18
2.14
1.11
Arsenic
75
<1.32
2.43
2.44
2.71
<2.34
<0.09
Cadmium
85
0.863
0.779
0.648
1.72
0.948
0.09
Copper
4,300
282
241
190
283
449
184
Chromium
NA
NA
NA
NA
NA
NA
NA
Lead
840
<0.658
2.77
5.65
4.05
4.37
0.69
Mercury
57
0.532
0.459
0.45
0.569
0.589
0.26
Molybdenum
75
7.98
6.22
<1.15
6.32
6.15
<0.45
Nickel
420
14
12.8
10.1
15.1
17
1.11
Selenium
100
3.99
3.79
<1.15
2.92
3.6
<0.09
Zinc
7,500
858
751
619
836
834
70.5
Total Phosphorus
NA
52,900
33,400
80,300
44,800
44,800
55,856
TKN
NA
117,000
153,000
151,000
125,000
65,400
97,297
Ammonia -Nitrogen
NA
84,700
99,100
58,200
68,200
221700
5,315
P
Nitrate and Nitrite
NA
102
420
77
72
134
59
a For surface disposal facilities the ceiling concentration limits listed in this form are not applicable. Reference the individual permit for metals limits.
"I certify, under penalty of law, that this document was prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gathered and evaluated the information submitted. I am aware that there are significant
penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
rrl2ce� l\ 2-22-2021
Sign ture of Preparer * Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM RSSF (12/2006)

ANNUAL RESIDUAL SAMPLING SUMMARY FORM - B
Report all sampling analysis results for parameters not listed in FORM RSSF that are part of the WQ permit or were analyzed for over the past
calendar year. Use additional forms as needed.
WQ Permit Number: WQ0001169 (B) WQ0021828 (A)
Facility Name: Orange Water & Sewer Authority
Residual Source
NPDES # or WQ#:
WWTP Name:
Residual Analvsis Data
NCO025241
Mason Farm WWTP
Laboratory: 1) Research & Analytical Labs
2) OWASA Lab
3)
4)
5)
Parameter
Sample or Composite Date
•:11
' :11
••11
'11
'11
':
------
'll
11
•11
••11
11
®------
*See Lab Sheets for
pH Results
------------
------------
------------
------------
------------
------------
"I certify, under penalty of law, that this document was prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gathered and evaluated the information submitted. I am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
Signa6uc of Preparer
2-22-2021
Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM RSSF - B (12/2006)

Section III
Annual Pathogen and Vector Attraction
Reduction Form (503) Rules

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From l/l/2020 To 2/29/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
10
11
12
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
Signature of Preparer*
Land Applier Name and Title (if applicable)(type or print)
2-22-2021
Date Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From 3/l/2020 To 4/30/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
<10
62
126
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
Signature of Preparer*
Land Applier Name and Title (if applicable)(type or print)
2-22-2021
Date Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From 5/l/2020 To 6/30/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
<8
59
107
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
GYIGCav �i
Signature of Preparer*
Land Applier Name and Title (if applicable)(type or print)
2-22-2021
Date Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From 7/l/2020 To 8/31/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
8
21
107
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
l
Signa re of Preparer*
Land Applier Name and Title (if applicable)(type or print)
Date Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From 9/l/2020 To 10/31/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
11
21
38
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
Signature of Preparer*
2-22-2021
Date
Land Applier Name and Title (if applicable)(type or print)
Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

ANNUAL PATHOGEN AND VECTOR ATTRACTION REDUCTION FORM (503 Rules)
Facility Name: Orange Water & Sewer Authority WQ Permit Number: WQ0021828
WWTP Name: Mason Farm Wastewater Treatment Plant
NPDES Number: NCO025241
Monitoring Period: From l l/l/2020 To 12/31/2020
Pathogen Reduction (40 CFR 503.32) - Please indicate level achieved and alternative performed:
Class A:
Alternative 1 0
Alternative 2 ❑
Alternative 3 ❑
Alternative 4
Alternative 5 ❑
Alternative 6 ❑
If applicable to alternative performed (Class A only) indicate "Process to Further Reduce Pathogens":
Compost
Heat Drying G
Heat Treatment ❑
Thermophilic
Beta Ray
Gamma Ray ❑
Pasteurization ❑
Class B:
Alternative 1
Alternative 2
If applicable to alternative performed (Class B only) indicate "Process to Significantly
Reduce Pathogens":
Lime Stabilization
Air Drying
I Composting
jAerobic Digestion ❑
Anaerobic Digestion ❑
If applicable to alternative performed (Class A or Class B) complete the
following monitoring data:
Allowable Level
Pathogen Density
Number ot
Frequency
Sample
Analytical
Parameter
in Sludge
Excee-
of Analysis
y
Type
Tech -
Minimum Minimu
Geo. Mean
Maximu
Units
deuces
ni ue
2 x 10 to the
MPN
6th power
per gram of
Fecal Coliform
total solids
CFU
1000 mpn per gram
MPN/
Bi-
SM
of total solid (dry
1
8
13
0
Grab
weight)
FC/G
Monthly
9221 E
Salmonella bacteria
3 MPN per 4 grams
(in lieu of fecal
total solid (dry
coliform)
weight)
Vector Attraction Reduction (40 CFR 503.33) - Please indicate option performed:
Alt.1 (VS reduction) 0
Alt. 2 (47day bench) ❑
Alt. 3 (30-daybench) ❑
1Alt. 4 (Spec. Oz uptake)
Alt. 5 (14-Day Aerobic) ❑
Alt. 6 (Alk. Stabilization ❑
Alt 7 (Drying - Stable) ❑
lAlt. 8 (Drying - Unstable)
Alt. 9 (Injection) ❑
Alt. 10 (Incorporation) ❑
No vector attraction reduction alternatives were performed
CERTIFICATION STATEMENT (please check the appropriate statement)
0 "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have been met."
r-r "I certify, under penalty of law, that the pathogen requirements in 40 CFR 503.32 and the vector
attraction reduction requirement in 40 CFR 503.33 have not been met." (Please note if you check
this statement attach an explanation why you have not met one or both of the requirements.)
"This determination has been made under my direction and supervision in accordance with the system
designed to ensure that qualified personnel properly gather and evaluate the information used to determine
that the pathogen and vector attraction reduction requirements have been met. I am aware that there are
significant penalties for false certification including fine and imprisonment."
Monica Dodson - WWTP Manager
Preparer Name and Title (type or print)
r�tccor I �a%on, 2-22-2021
Sign ture of Preparer* Date
Land Applier Name and Title (if applicable)(type or print)
Signature of Land Applier (if applicable) Date
*Preparer is defined in 40 CFR Part 503.9(r) and 15A NCAC 2T .1102 (26)
DENR FORM PVRF 503 (12/2006)

Section IV
Lab Sheets

2020
Jan-20
Feb-20
Mar-20
Apr-20
May-20
Jun-20
Jul-20
Aug-20
Sep-20
Oct-20
Nov-20
Dec-20
AVG
MAX
MIN
OWASA
MASON F
AVERAGE MOB
DIGESTER 4
AVG TEMP HRT
F°
DAYS
138.9
12.5
138.3
12.1
139.3
11.3
139.2
13.2
139.8
12.8
139.7
13.6
139.0
13.3
139.5
14.0
139.5
18.0
140.3
14.2
139.0
13.3
139.4
11.7
139.3
13.3
140.3
18.0
138.3
11.3
ARM WWTP - DIG
JTHLY OPERATINC
CALEN[
DIGESTER 3
AVG TEMP
HRT
F°
DAYS
138.3
9.8
137.6
8.8
138.5
8.8
139.1
11.2
139.4
10.8
139.2
9.8
139.0
9.2
139.0
11.2
139.3
5.9
139.5
5.5
138.4
5.2
138.5
4.8
138.8
8.4
139.5
11.2
137.6
4.8
ESTION
PROCESS
TEMPERATURES
)AR YEAR
2020
DIGESTER 2
AVG TEMP HRT
F°
DAYS
126.9
6.9
126.7
6.9
129.1
6.1
130.3
6.9
129.6
7.1
131.6
7.0
133.1
7.2
132.3
7.2
128.5
7.4
126.2
11.5
125.8
6.2
125.5
5.9
128.8
7.5
133.1
11.5
125.5
5.9
OPERATING SUM[
& RETENTION TIN
DIGESTER 1
AVG TEMP HRT
F° DAYS
112.1
14.9
111.6
14.5
113.9
12.9
117.5
14.9
117.2
15.0
121.2
14.9
123.8
15.2
123.9
15.5
119.3
13.1
107.6
15.0
111.6
13.3
108.4
12.5
107.6 12.5
AARY
1ES
COMBINED
AVG TEMP
HRT
F°
DAYS
129.1
44.1
128.6
42.3
130.2
39.1
131.5
46.1
131.5
45.7
132.9
45.4
133.7
45.0
133.7
47.9
135.8
44.5
129.1
46.2
129.7
38.0
128.8
34.9
131.2
43.3
135.8
47.9
128.6
34.9

Jan-20
Feb-20
Mar-20
Apr-20
May-20
Jun-20
Jul-20
Aug-20
Sep-20
Oct-20
Nov-20
Dec-20
F-AlMe
MAX
MIN
OWASA MASON FARM WWTP - DIGESTER RETENTION TIME
DIGESTER 4
Cap. = 570,000 GALS.
(Esti Use 85%Cap.)
IN \ OUT RETENTION
GALS. DAYS
38,800
12.5
40,082
12.1
42,793
11.3
36,792
13.2
37,759
12.8
35,507
13.6
36,309
13.3
34,668
14.0
26,847
18.0
34,152
14.2
36,359
13.3
41,439
11.7
36,792
13.3
42,793
18.0
26,847
11.3
DIGESTER 3
Cap. = 310,000 GALS.
(Esti Use 85%Cap.)
IN \ OUT RETENTION
GALS. DAYS
26,927
9.8
30,046
8.8
30,105
8.8
23,615
11.2
24,354
10.8
26,832
9.8
28,626
9.2
23,435
11.2
44,601
5.9
47,598
5.5
51,048
5.2
54,596
4.8
34,315 8.4
54,596 11.2
23,435 4.8
DIGESTER 2
Cap. = 310,000 GALS.
(Esti Use 85%Cap.)
IN \ OUT RETENTION
GALS. DAYS
38,347
6.9
38,445
6.9
43,198
6.1
38,355
6.9
37,254
7.1
37,535
7.0
36,778
7.2
36,699
7.2
35,741
7.4
22,929
11.5
42,377
6.2
44,826
5.9
36,698 7.5
44,826 11.5
22,929 5.9
DIGESTER 1
Cap. = 690,000 GALS.
(Esti Use 85%Cap.)
IN \ OUT RETENTION
GALS. DAYS
39,261
14.9
40,324
14.5
45,442
12.9
39,232
14.9
39,108
15.0
39,326
14.9
38,470
15.2
37,726
15.5
44,639
13.1
39,148
15.0
44,091
13.3
46,759
12.5
41,127
14.3
46,759
15.5
37,726
12.5

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
JANUARY 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
01 /01 /20
01 /02/20
01 /03/20
01 /04/20
01 /05/20
01 /06/20
2.13
87.06
0.77
74.54
5.59
82.22
2.04
62.50
7.6
01 /07/20
1.83
62.86
7.7
01 /08/20
1.66
62.66
7.8
01 /09/20
1.81
62.82
7.8
01 /10/20
01/11/20
01 /12/20
01 /13/20
3.17
88.54
0.90
75.46
6.57
83.29
1.94
65.56
7.6
01 /14/20
1.72
62.56
7.8
01 /15/20
1.64
62.39
7.9
01 /16/20
1.75
61.80
7.8
01 /17/20
01 /18/20
01 /19/20
01 /20/20
01 /21 /20
0.84
86.70
0.90
75.16
5.56
79.84
1.96
63.05
7.9
01 /22/20
01 /23/20
01 /24/20
01 /25/20
01 /26/20
01 /27/20
0.56
82.60
0.91
75.16
5.33
80.71
3.09
59.40
7.9
01 /28/20
01 /29/20
01 /30/20
01 /31 /20
AVERAGE
1.68
86.23
0.87
75.08
5.76
81.52
1.94
1 62.56
7.78

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
FEBRUARY 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
02/01 /20
02/02/20
02/03/20
1.58
89.32
1.08
75.50
5.48
80.60
3.01
60.17
7.9
02/04/20
02/05/20
02/06/20
02/07/20
02/08/20
02/09/20
02/10/20
2.81
74.49
0.96
75.00
5.26
78.27
2.19
62.17
7.9
02/11 /20
02/12/20
02/13/20
02/14/20
02/15/20
02/16/20
02/17/20
0.36
85.24
1.01
75.11
5.41
77.95
1.94
62.46
7.8
02/18/20
02/19/20
02/20/20
02/21 /20
02/22/20
02/23/20
02/24/20
0.21
71.55
1.03
75.79
5.45
79.70
1.97
62.45
8.1
02/25/20
02/26/20
02/27/20
02/28/20
02/29/20
AVE RAGE
1.24
80.15
1.02
75.35
5.40
1 79.13 11
2.28
61.81
7.92

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
MARCH 2O20
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
03/01 /20
03/02/20
2.33
86.52
1.12
75.89
6.17
83.33
1.90
62.79
7.9
03/03/20
03/04/20
03/05/20
03/06/20
03/07/20
03/08/20
03/09/20
0.99
85.39
0.95
74.86
6.07
83.03
1.93
62.54
8.2
03/10/20
03/11 /20
03/12/20
03/13/20
03/14/20
03/15/20
03/16/20
1.99
62.21
8.0
03/17/20
1.94
62.19
8.0
03/18/20
NS
NS
NS
NS
6.01
83.79
1.83
62.14
7.9
03/19/20
2.03
63.11
8.0
03/20/20
03/21 /20
03/22/20
03/23/20
NS
NS
NS
NS
5.78
80.01
2.14
62.78
8.2
03/24/20
2.64
62.34
7.7
03/25/20
2.45
62.43
8.0
03/26/20
2.67
61.51
7.9
03/27/20
03/28/20
03/29/20
03/30/20
NS
NS
NS
NS
6.25
84.01
2.46
62.16
7.9
03/31 /20
AVERAGE
1.66
85.96
1. 44
75.38 11
6.06
82.83
2. 88
62.38
7.99
*Due to COVID-19, reduced to regulatory sampling and testing only.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
APRIL 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
04/01 /20
04/02/20
04/03/20
04/04/20
04/05/20
04/06/20
NS
NS
NS
NS
6.19
84.05
2.25
63.72
7.8
04/07/20
04/08/20
04/09/20
04/10/20
04/11 /20
04/12/20
04/13/20
NS
NS
NS
NS
5.86
80.18
2.25
63.79
7.9
04/14/20
04/15/20
04/16/20
04/17/20
04/18/20
04/19/20
04/20/20
NS
NS
NS
NS
5.53
80.34
2.22
63.16
7.7
04/21 /20
04/22/20
04/23/20
04/24/20
04/25/20
04/26/20
04/27/20
NS
NS
NS
NS
6.01
82.09
2.30
62.07
8.0
04/28/20
04/29/20
04/30/20
AVERAGE
#DIV/0!
#DIV/0! 11
#DIV/0!
#DIV/07!
5.90
81.67 11
2.26
63.19
7.83
*Due to COVID-19, reduced to regulatory sampling and testing only.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
MAY 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
05/01 /20
05/02/20
05/03/20
05/04/20
NS
NS
NS
NS
6.37
81.34
2.17
62.59
7.8
05/05/20
05/06/20
05/07/20
05/08/20
05/09/20
05/10/20
05/11/20
NS
NS
NS
NS
6.30
84.36
2.14
62.03
8.1
05/12/20
2.17
62.11
8.1
05/13/20
2.18
62.12
8.0
05/14/20
2.16
1 62.30
8.1
05/15/20
05/16/20
05/17/20
05/18/20
2.15
62.27
8.1
05/19/20
2.13
61.72
8.1
05/20/20
2.12
62.32
8.1
05/21/20
NS
NS
NS
NS
5.26
83.94
2.09
62.00
8.1
05/22/20
05/23/20
05/24/20
05/25/20
05/26/20
05/27/20
05/28/20
NS
NS
NS
NS
5.81
77.20
2.14
62.34
8.1
05/29/20
05/30/20
05/31 /20
AVERAGE
#DIV/0!
#DIV/0!
7#DIV/0!
#DIV/0! 11
5.94
1 81.71
2. 55
62.18
8.09
*Due to COVID-19, reduced to regulatory sampling and testing only.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
JUNE 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
06/01 /20
06/02/20
06/03/20
06/04/20
NS
NS
NS
NS
5.34
76.00
2.17
62.78
8.0
06/05/20
06/06/20
06/07/20
06/08/20
06/09/20
06/10/20
06/11/20
NS
NS
NS
NS
5.95
80.96
2.25
62.24
7.6
06/12/20
06/13/20
06/14/20
06/15/20
06/16/20
06/17/20
NS
NS
NS
NS
4.92
73.04
2.27
62.04
8.1
06/18/20
06/19/20
06/20/20
06/21 /20
06/22/20
06/23/20
06/24/20
NS
NS
NS
NS
5.38
81.25
2.24
61.51
8.0
06/25/20
06/26/20
06/27/20
06/28/20
06/29/20
06/30/20
AVERAGE
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
5.40
77.81
2.23
62.14
7.91
*Due to COVID-19, reduced to regulatory sampling and testing only.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
J U LY 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
07/01/20
NS
NS
NS
NS
4.92
73.93
2.29
61.42
7.8
07/02/20
07/03/20
07/04/20
07/05/20
07/06/20
07/07/20
07/08/20
NS
NS
NS
NS
6.03
78.50
2.26
60.92
7.8
07/09/20
07/10/20
07/11 /20
07/12/20
07/13/20
2.19
60.79
7.8
07/14/20
2.17
59.98
7.8
07/15/20
2.31
60.33
7.6
07/16/20
NS
NS
NS
NS
4.86
75.53
2.36
60.52
7.7
07/17/20
07/18/20
07/19/20
07/20/20
2.37
59.90
8.2
07/21 /20
2.29
60.46
7.7
07/22/20
2.14
60.63
7.7
07/23/20
NS
NS
NS
NS
5.80
79.33
2.35
60.61
7.7
07/24/20
07/25/20
07/26/20
07/27/20
07/28/20
07/29/20
07/30/20
NS
NS
NS
NS
6.03
78.97
2.20
60.48
07/31 /20
AVERAGE
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0! 11
5.53
77.25
2.27
1 60.55
7.77
*Due to COVID-19, reduced to regulatory sampling and testing only.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
AUGUST 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
08/01 /20
08/02/20
08/03/20
08/04/20
08/05/20
08/06/20
NS
NS
NS
NS
3.94
73.82
2.13
61.27
08/07/20
08/08/20
08/09/20
08/10/20
08/11 /20
08/12/20
08/13/20
NS
NS
NS
NS
5.93
80.12
2.30
60.49
7.8
08/14/20
08/15/20
08/16/20
08/17/20
08/18/20
0.36
80.69
0.68
66.82
5.57
79.11
2.26
60.72
7.7
08/19/20
08/20/20
08/21 /20
08/22/20
08/23/20
08/24/20
08/25/20
0.28
72.59
0.68
65.93
4.88
72.97
1.82
59.96
8.2
08/26/20
08/27/20
08/28/20
08/29/20
08/30/20
08/31 /20
AVERAGE
0.32
76.64
0.68
66.38
5.08
76.51
2.13
60.61
7.88
*Resumed process sampling and testing.

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
SEPTEMBER 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
09/01 /20
0.05
39.57
0.78
67.15
6.55
71.45
2.23
60.27
7.6
09/02/20
09/03/20
09/04/20
09/05/20
09/06/20
09/07/20
09/08/20
0.29
76.49
0.74
66.97
5.62
79.53
2.06
60.39
7.9
09/09/20
09/10/20
09/11 /20
09/12/20
09/13/20
09/14/20
2.07
59.73
8.0
09/15/20
0.21
73.61
0.79
65.94
2.08
59.47
8.2
09/16/20
2.07
59.96
8.2
09/17/20
5.64
83.14
2.05
59.62
8.1
09/18/20
09/19/20
09/20/20
09/21 /20
2.08
59.58
7.8
09/22/20
0.45
81.77
0.60
65.65
5.69
83.21
2.08
60.17
1 7.9
09/23/20
2.10
59.43
8.1
09/24/20
2.08
59.78
8.2
09/25/20
09/26/20
09/27/20
09/28/20
09/29/20
0.48
86.03
0.65
66.54
4.79
72.98
1.98
60.73
7.8
09/30/20
AVE RAGE
0.30
71.49
0.71
66.45
1 78.06
2. 88
59.92
8.02

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
OCTOBER 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
10/01 /20
10/02/20
10/03/20
10/04/20
10/05/20
10/06/20
0.40
81.86
0.67
66.94
4.85
73.43
1.96
61.13
8.0
10/07/20
10/08/20
10/09/20
10/10/20
10/11 /20
10/12/20
10/13/20
1.27
87.69
0.74
68.07
4.88
75.72
3.35
56.98
7.8
10/14/20
10/15/20
10/16/20
10/17/20
10/18/20
10/19/20
10/20/20
0.59
88.62
0.73
68.75
5.17
78.67
2.04
59.91
8.1
10/21 /20
10/22/20
10/23/20
10/24/20
10/25/20
10/26/20
10/27/20
0.22
81.68
0.70
68.01
4.76
79.94
2.62
59.42
8.2
10/28/20
10/29/20
10/30/20
10/31 /20
AVE RAGE
0.62
.-8-49-671
0.71
1 67.94
4.92
76.94
2.49
59.36
1 8.03

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
NOVEMBER 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO GBT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
11 /01 /20
11 /02/20
11 /03/20
0.32
80.02
0.59
68.15
5.48
84.80
1.79
60.21
8.1
11 /04/20
11 /05/20
11 /06/20
11 /07/20
11 /08/20
11 /09/20
1.96
91.22
0.76
69.75
5.67
87.34
1.92
61.17
7.8
11 /10/20
1.90
61.54
7.5
11 /11 /20
1.89
61.57
7.6
11 /12/20
1.88
61.49
7.7
11/13/20
11 /14/20
11/15/20
11 /16/20
2.09
91.10
0.78
70.48
5.39
79.59
1.84
61.83
7.6
11 /17/20
1.83
61.59
7.6
11 /18/20
1.83
61.74
7.5
11 /19/20
1.82
61.93
7.5
11 /20/20
11/21/20
11 /22/20
11 /23/20
0.21
80.00
0.77
70.31
6.03
81.25
1.77
61.79
7.5
11 /24/20
11 /25/20
11 /26/20
11 /27/20
11 /28/20
11 /29/20
11 /30/20
0.19
76.09
0.76
69.83
4.74
79.97
1.68
62.50
7.5
AVERAGE
0.95
83.69
0.73
69.70
5.46
82.59
1.83
61.58
7.61
*Thickening Process upgraded from Gravity Belt Thickeners to Rotary Drum Thickeners

ORANGE WATER AND SEWER AUTHORITY
MASON FARM WASTEWATER TREATMENT PLANT
TOTAL SOLIDS AND pH WORKSHEET
DECEMBER 2020
SAMPLE
DATE
PRIMARY
SLUDGE TO RDT
WASTE ACTIVATED
SLUDGE TO GBT
COMBINED PS +
WAS TO DIGESTION
BIOSOLIDS TO
LAND APPLICATION
%TS
%TVS
%TS
%TVS
%TS
%TVS
%TS
%TVS
pH
12/01/20
12/02/20
12/03/20
12/04/20
12/05/20
12/06/20
12/07/20
1.43
87.53
0.68
69.49
5.48
82.28
3.33
58.37
7.5
12/08/20
12/09/20
12/10/20
12/11/20
12/12/20
12/13/20
12/14/20
1.42
89.51
0.69
69.74
5.55
81.93
1.17
62.42
8.0
12/15/20
12/16/20
12/17/20
12/18/20
12/19/20
12/20/20
12/21/20
0.22
80.19
0.83
70.85
7.04
81.58
1.32
62.61
7.7
12/22/20
12/23/20
12/24/20
12/25/20
12/26/20
12/27/20
12/28/20
0.68
84.69
0.83
69.89
5.85
81.45
1.50
61.64
7.8
12/29/20
12/30/20
12/31/20
AVERAGE
0.94
85.48
0.76
69.99
5.98
81.81
1.83
61.26
7.75

OWASA
Digested Sludge Analysis for Fecal Coliform
Reported MPN fecal coliform/g = 11 (geometric mean for Class B)
MAX 12 (single value, Class A)
MIN 10
Average MPN fecal coliform/g= 11
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
01 /06/20
2
2.03
1
10
01/07/20
<2
1.83
1
<11
01/08/20
<2
1.66
1
<12
01/09/20
<2
1.81
1
<11
01/13/20
2
1.94
1
10
01/14/20
2
1.72
1
12
01/15/20
<2
1.64
1
<12
01/16/20
<2
1.75
1
<11
Using EPA 503 rulesfor ClassA Sludge, Appendix F:
-follow SM 9221 E (Al Media)-2006, SM 9221 C Table 9221:IV-2006
-Report as M PN Fecal Col ifomVgram
-CalculatiorXEPA)_(10* (MPN Index/100mis))/(largestvolume*%dry solids)
where: M PN I ndex/100mis is read from M PN table,
-Each reported val ue must be <1000 M PN per gram total sol ids (dry wt basis)
Using EPA 503 rules for Class B Sludge, Appendix F:
-follow SM 9221 E (Al Media)-2006, SM 9221 C Table 9221:IV-2006
-Report as M PN Fecal Col ifomVgram
-CalculatiorXEPA)_(10* (MPN Index/100mis))/(largestvol ume*%dry solids)
where: M PN I ndex/100mis is read from M PN table,
-Reported value is geometric mean of al I samples
-Reported val ue must be <2 mi I I ion M PN per gram total sol ids ( dry wt basis)

OWASA
Digested Sludge Analysisfor Fecal Coliform
Reported MPN fecal coliform/g = 62 (geometric mean for Class B)
MAX 126 (single value, Class A)
MIN <10
Average MPN fecal coliform/g= 82
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
03/16/20
23
1.99
1
116
03/17/20
23
1.94
1
119
03/18/20
23
1.83
1
126
03/19/20
<2
2.03
1
<10
03/23/20
4
2.14
1
19
03/24/20
23
2.64
1
87
03/25/20
23
2.45
1
94
03/26/20
23
2.67
1
86
Using EPA 503 rules for CI ass A Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Each reported val ue must be < 1000 M PN per gram total sot ids ( dry wt bass)
Using EPA 503 rules for Class B Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Reported value is geometric mean of al I samples

OWASA
Digested Sludge Analysis for Fecal Coliform
Reported MPN fecal coliform/g = 59 (geometric mean for Class B)
MAX 107 (single value, Class A)
MIN <8
Average MPN fecal coliform/g= 74
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
05/11/20
1.8
2.14
1
< 8 *
05/12/20
23
2.17
1
106
05/13/20
23
2.18
1
106
05/14/20
23
2.16
1
106
05/18/20
23
2.15
1
107
05/19/20
13
2.13
1
61
05/20/20
7.8
2.12
1
37
05/21 /20
13
2.09
1
62
* M PN I ndex was below detection
Using EPA 503 rulesfor ClassA Sludge, Appendix F:
-follow SM 9221 E (Al Media)-2006, SM 9221 C Table 9221:IV-2006
-Report as M PN Fecal Col ifomVgram
-CalculatiorXEPA)_(10* (MPN Index/100mis))/(largestvolume*%dry solids)
where: M PN I ndex/100mis is read from M PN table,
-Each reported val ue must be <1000 M PN per gram total sol ids (dry wt basis)
Using EPA 503 rules for Class B Sludge, Appendix F:
-follow SM 9221 E (Al Media)-2006, SM 9221 C Table 9221:IV-2006
-Report as M PN Fecal Col ifomVgram
-CalculatiorXEPA)_(10* (MPN Index/100mis))/(largestvol ume*%dry solids)
where: M PN I ndex/100mis is read from M PN table,
-Reported value is geometric mean of al I samples
-Reported val ue must be <2 mi I I ion M PN per gram total sol ids ( dry wt basis)

OWASA
Digested Sludge Analysisfor Fecal Coliform
Reported MPN fecal coliform/g = 21 (geometric mean for Class B)
MAX 107 (single value, Class A)
MIN 8
Average MPN fecal coliform/g= 36
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
07/13/20
2
2.19
1
9
07114V20
4
2.17
1
18
07/15/20
2
2.31
1
9
07/16/20
2
2.36
1
8
07/20/20
23
2.37
1
97
07/21/20
2
2.29
1
9
07/22120
23
2.14
1
107
07/23/20
8
2.35
1
34
Using EPA 503 rules for CI ass A Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Each reported val ue must be < 1000 M PN per gram total sot ids ( dry wt bass)
Using EPA 503 rules for Class B Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Reported value is geometric mean of al I samples

OWASA
Digested Sludge Analysisfor Fecal Coliform
Reported MPN fecal coliform/g = 21 (geometric mean for Class B)
MAX 38 (single value, Class A)
MIN 11
Average MPN fecal coliform/g= 23
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
09114V20
7.8
2.07
1
38
09/15/20
4.5
2.08
1
22
09/16/20
4.5
2.07
1
22
09/17/20
33
2.05
10
16
09/21/20
49
2.08
10
24
09/22120
23
2.08
10
11
09/23/20
79
2.1
10
38
09/24/20
33
2.08
10
16
Using EPA 503 rules for CI ass A Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Each reported val ue must be < 1000 M PN per gram total sot ids ( dry wt bass)
Using EPA 503 rules for Class B Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Reported value is geometric mean of al I samples

OWASA
Digested Sludge Analysisfor Fecal Coliform
Reported MPN fecal coliform/g = 8 (geometric mean for Class B)
MAX 13 (single value, Class A)
MIN 1
Average MPN fecal coliform/g= 10
Date
M PN I ndex / 100mis
TS (%)
Largest Volume Used (mL)
M PN FC/g
11/09/20
23
1.92
10
12
11/10/20
13
1.9
10
7
11/11/20
23
1.89
10
12
11/12120
23
1.88
10
12
11/16/20
23
1.84
10
13
11/17/20
13
1.83
10
7
11/18/20
23
1.83
10
13
11/19/20
1.8
1.82
10
1
Using EPA 503 rules for CI ass A Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Each reported val ue must be < 1000 M PN per gram total sot ids ( dry wt bass)
Using EPA 503 rules for Class B Sludge, Appendix F:
-fol I ow SM 9221 E (A 1 M edi a)-2006, SM 9221 C Table 9221:1 V -2006
-Report as M PN Fecal Coliform1gram
-Calculation(EPA) _ (10 * (MPN Index/100 mis))/(largest vol ume*% dry solids)
where: MPN I ndex/ 100m1 s is read from M PN table,
-Reported value is geometric mean of al I samples

RESEARCh & ANALyTICAI Report of Analysis
LAbORATORIESF ING 1/22/2020
For: Orange Water & Sewer Authority
,••���'•'"• '++
400 Jones Ferry Road
�;� A;�!
Carrboro, NC 27510
u'
'a3 NC #34 �' z�
3 NC #37701
Attn: Monica Dodson
i E';.•
Client Sample ID: Digested Sludge
Lab Sample ID:
76680-01
Site: OWASA
Collection Date:
1/6/2020 9:30
Parameter
Method
Result
Units
Anal Analysis [late/Time
`Nitrate Nitrogen
(SM 4500 NO3 E-201i)-(SM
102
mg/kg
DW
1/7/2020 1140
4500 NO2 B-2011)
Aluminum, Total
EPA 200.7
56800
mglkg
SK
1/9/2020
Arsenic, Total
EPA 200.7
<1.32
mglkg
SK
1/9/2020
Cadmium, Total
EPA 200.7
0.863
mglkg
SK
119/2020
Calcium, Total
EPA 200.7
22400
mglkg
SK
1/9/2020
Copper, Total
EPA 2007
282
mg/kg
SK
1/9/2020
Lead, Total
EPA 200.7
<0.658
mg/kg
SK
1/9/2020
Magnesium, Total
EPA 200.7
5970
mg/kg
SK
1/9/2020
Molybdenum, Total
EPA 200.7
7.98
mglkg
SK
1/9/2020
Nickel, Total
EPA 200.7
14.0
mglkg
SK
1/9/2020
Potassium, Total
EPA 200.7
9640
mglkg
SK
1/9/2020
Selenium, Total
EPA 200.7
3.99
mglkg
SK
1/9/2020
Sodium, Total
EPA 200.7
6190
mglkg
SK
1/9/2020
Zinc, Total
EPA 200.7
858
mglkg
SK
1/9/2020
Mercury, Total
EPA 245.1
0,532
mg/kg
MM
1/15/2020
% Solids
SM 2540B
1.90
%
AW
1/6/2020
Total Kjedjahl Nitrogen
SM 4500 N Org B (NH3 D-
117000
mglkg
FK
1/8/2020
1997)
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284
Tel: [phone]
Fax- 336-996-0326 www.rand alabs.corn Page i

RESEARCH & ANALyTICAI
Report of Analysis
LA b O RATO RI ES, INC.
1 /22/2020
Client Sample ID: Digested Sludge
Lab Sample ID: 76680-01
Site: OWASA
Collection Date: 1/6/2020 9:30
Parameter Method
Result
Units
Analyst Analysis Date/Time
Ammonia Nitrogen SM 4500 NFi3 D-1997
84700
mg/kg
FK 1/8/2020
Nitrite Nitrogen SM 4500 NO2 B-2000
<5.26
mg/kg
DW 1/7/2020 1210
Nitrate + Nitrite SM 4500 NO3 E-2000
102
mglkg
DW 1/7/2020 1140
Total Phosphorous SM 4500 P E-1999
52900
mg/kg
LP 1/10/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kemersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2
fal coa basic noRl_

RESEARCh & ANA1yTICA1
-` LAboRATORfES� INC.
.r
Analytical / Process Consultations
Phone [phone]
CHAIN OF CUSTODY RECORD
WATER 1 WASTEWATER I MISC.
COMAPANY
Orange Water and Sewer Authority
JOB NO
CC
�
—
d°yo o,
0.
= yy� y`Gio
A,
�`a}�00 00- A0 GOO
y.
n v Y v REQUESTED ANALYSES
sTREETADDRESS
4Q0 Jones Ferry Road
PROJECT
e
Digested Sludge
g g
CITY, STATE, ZiP
Carrboro, NC 27510
SAMPLER NAME #PLEASE PRI Tj
b,., W
�CONTACT p PHONE t
4 1d+�:Cq
R/ft/$3GGNATLIRE
SAMPLE NUMBER
{LAD USE ONLY)
DATE
TWE
COY
GMi4B
Y
RE
CI
�°ro
v . Nl
u TPIX
rs o rn
SAMPLE LOCATION ! I.D.
C�j
1-L-
X.
NA
N
W
Digested Sludge
6
Metals(A1, Ca,
Cd,Cu,Hg,Mg,
o,Na,Ni,Pb,As,
K,Se,Zn)
Total Phosphorus
I
T KN
0
Ammonia Nitrogen
Nitrate Nitrogen
Nitrite Nitrogen
NO3+NO2 Nitrogen
Note change oftests requested.
RELIN UIS D
DATE,Tfh4E
�h
R V�EO Y,-ie-�G
—-j•'Lm
, RZQ��G�_�
cooler packed with crushed ice
Y3,1�, ������,,
SAMPLE TEMpERATURE AT RECEIPT 2-°C
RELINQ SHED
ibATMIIAE
I
RECEiVEO BY
Z

RESEARCh & ANA1yTICAL Report of Analysis
LABORATORIES, INC. 4/9/2020
•t•� �� 40ft
+ice
For: Orange Water & Sewer
Authority
.• G .••••' '•'•�..
•� L" C ��
400 Jones Ferry Road
�4�•
'7
;a= Ar � S
Carrboro, NC 27510
NC #34 Zy.
� to
oo
S NC #37701
Attn:
RECEIVED
By Jennifer Hunter at
1:07 pm, Apr
12, 2020
.�'9,.i ••`
�fliAN�i�
Client Sample ID: Digested Sludge
Lab Sample ID:
80058-01
Site: OWASA
Collection Date:
3/23/2020 10:10
parameter
Method
Result
Units
Analyst Analysis DalLfrime
Nitrate Nitrogen
(SM 4500 NO3 E-2011)-(SM
420
mglkg
DW
3/25/2020 1030
4500 N 02 B-2011)
Aluminum, Total
EPA 200.7
45800
mglkg
SK
4/1/2020
Arsenic, Total
EPA 200.7
2.43
mglkg
SK
4/1/2020
Cadmium, Total
EPA 200.7
0.779
mglkg
SK
4/1/2020
Calcium, Total
EPA 200.7
17500
mglkg
SK
4/1/2020
Copper, Total
EPA 200.7
241
mglkg
SK
4/1/2020
Lead, Total
EPA 200.7
2.77
mglkg
SK
4/1/2020
Magnesium, Total
EPA 200.7
5390
mglkg
SK
4/1/2020
Molybdenum, Total
EPA 2007
6.22
mglkg
SK
4/1/2020
Nickel, Total
EPA 200.7
12.8
mglkg
SK
4/1/2020
Potassium, Total
EPA 200.7
8160
mglkg
SK
4/1/2020
Selenium, Total
EPA 200.7
3.79
mglkg
SK
4/1/2020
Sodium, Total
EPA 200.7
908
mglkg
SK
4/6/2020
Zinc, Total
EPA 200.7
751
mglkg
SK
4/1/2020
Mercury, Total
EPA 245.1
0.459
mg/kg
MM
4/1/2020
% Solids
SM 25406
2.22
%
AW
3/25/2020
Total Kjedjahl Nitrogen
SM 4500 N Org B (NH3 D-
153000
mglkg
FK
3/25/2020
2011)
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284
Tel: [phone]
Fax: [phone] www.randalabs.com Page 1

RESEARCh & ANA1yTICA1
Report of Analysis
LAbORATORIES, INC.
4/9/2020
Client Sample iD: Digested Sludge
Lab Sample ID: 80058-01
Site: OWASA
Collection Date: 3/23/2020 10:10
--
Parameter. Method
Result
Units-
- Analyst Analysis DatelTime
Ammonia Nitrogen SM 4500 NH3 D-2011
99100
mg/kg
FK 3/25/2020
Nitrite Nitrogen SM 4500 NO2 B-2011
<4.50
mg/kg
DW 3/25/2020 1040
Nitrate + Nitrite SM 4500 NO3 E-2011
420
mg/kg
DW 3/25/2020 1030
Total Phosphorous SM 4500 P E-2011
33400
mglkg
BJ 4/8/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2
gal coe �nsic r-ckf.

RESEARCh & ANA[ TeCA1
r -1 LgbQRATaRIES� INC.
Analytical / Process Consultations
Phone [phone]
COMPANY JOBS
Orange Water and Sewer Authority
STREET ADDRESS
400 Jones
Ferry Road
PROJECT
Digested Sludge
CITY, STATE. ZIP
59R NAME (PLEASE PRINT)
Carrboro,
NC 27510
I�o•n", 2�
CONTACT
PHONE
ATURE
SAMPLE NU
DATETIME
CCM
GRAB
TEM
C
RE5
Ci
^
H r�:RVsE o
sw+a
isuoum
SAMPLE LOCATION 110.
jLAB USE ONLYp.
)
Ipt
X
NA
N
I W
Digested Sludge
�_Z32
Note chanze of tests requested.
CHAIN OF CUSTODY RECORD
I WATER 1 WASTEWATER LMISC_ f
hv roy �� rqd yy Or
O 4 `3 C� Q Cam Qr C� C.7 U
o of F F Q- O Q- Q' Q'
REQUESTED ANALYSIS
Metals(A1, Ca,
Cd,Cu, Hg,Mg,
Ao,Na,Ni,Pb,As,
K,Se,Zn)
Total. Phosphorus
Nitrate Nitrogen
Nitrite Nitrogen
NO3+NO2 Nitrogen
RELINQUIS 6 DATErNME RECEIVEDSY REMARKS:
'3
RELIF�OI5F#D BY DATEf 4 hE RECEIVED BY
SAMPLE TEMPERATURE AT RECEIPT °C

RESEARCh & ANALYTICAL
LABORATORIES, INC.
For: Orange Water & Sewer Authority
Report of Analysis
5/26/2020
400 Janes Ferry Road Corrected Report
Carrboro, NC 27510
Attn: Jennifer Hunter RECEIVED
By Jennifer Hunter at 8:14 am, May 27, 2020
Client Sample ID: Digested Sludge
Site: OWASA
Parameter.
Method
Nitrate Nitrogen
(SM 4500 NO3 E-2011)-(5M
4500 NO2 B-201 1)
Aluminum, Total
EPA 200.7
Arsenic, Total
EPA 200.7
Cadmium, Total
EPA 200.7
Calcium, Total
EPA 200.7
Copper, Total
EPA 200.7
Lead, Total
EPA 200.7
Magnesium, Total
EPA 200.7
Molybdenum, Total
EPA 200.7
Nickel, Total
EPA 200.7
Potassium, Total
EPA 200.7
Selenium, Total
EPA 200.7
Sodium, Total
EPA 2007
Zinc, Total
EPA 200.7
Mercury, Total
EPA 245.1
% Solids
SM 2540B
Total Kjedjahl Nitrogen
SM 4500 N Org B (NH3 D-
2011)
P.O. Box 473 106 Short Street Kernersville. North Carolina 27284
1tHRC1�'��i•1
00
NC#34
NC #37701
Lab Sample ID: 81970-01
Collection Date: 5/11/2020 9:10
Result Units Analyst Analysis Date/Time
71.4 mg/kg DW 5/14/2020 1210
36600
mglkg
SK
5/15/2020
2.44
mglkg
SK
5/15/2020
0.648
mg/kg
SK
5/15/2020
13900
mglkg
SK
5/15/2020
190
mglkg
SK
5/15/2020
5.65
mglkg
SK
5/15/2020
4630
mglkg
SK
5/15/2020
<1.15
mg/kg
SK
5/15/2020
10.1
mglkg
SK
5/15/2020
8400
mg/kg
SK
5/15/2020
<1.15
mglkg
SK
5/15/2020
4640
mg/kg
SK
5/15/2020
619
mg/kg
SK
5/15/2020
0.450
mg/kg
MM
5/14/2020
2.18
%
AW
5/14/2020
151000
mg/kg
FK
5/14/2020
Tel: [phone]
Fax: [phone]
www.randalabs.com Page 1

RESEARCh & ANALyTICA1 Report of Analysis
LA 0 RATO R I ES, INC. 5/26/2020
Client Sample ID:
Digested Sludge
Lab Sample ID:
81970-01
Site:
OWASA
Collection Date:
5/11/2020 9:10
Parameter
Metho
Result
Units
Analyst Analysis DateMrr
Ammonia Nitrogen
SM 4500 NH3 D-2011
58200
mg/kg
FK
5/14/2020
Nitrite Nitrogen
SM 4500 NO2 B-2011
3.02
mg/kg
DW
5/14/2020 1230
Nitrate + Nitrite
SM 4500 NO3 E-2011
74.4
mg/kg
DW
5/14/2020 1210
Total Phosphorous
SM 4500 P E-2011
80300
mg/L
BJ
5/15/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2

RESEARCh & ANA1yTICA1 Report of Analysis
LA oRAT®RiESIF INC. 8i7i2020
r+i�rnrrrrxi
For: Orange County Water & Sewer Authority i•.•,G .•••••.ris
400 Jones Ferry Road
82
Carrboro,NC27510iq NC#34
RECEIVED "C #377°1
Jr
Attn: Jennifer Hunter �; � ,,� •:
By Jennifer Hunter at 2:21 pm, Aug 17, 2020 +,`!t F1�1l��A�•,•
rrrr,1111,
Client Sample ID: Digested Sludge Lab Sample ID: 84655-01
Site: Orange Water and Sewer Authority Collection Date: 7/14/2020 9:25
Parameter Method Result Units Analyst Analysis Date/Time
Aluminum, Total EPA 200.7 57400 mg/kg MM 7/29/2020
Arsenic, Total EPA 200.7 2.71 mglkg MM 7/29/2020
Cadmium, Total EPA 200.7 1.72 mg/kg MM 7/29/2020
Calcium, Total EPA 200.7 16900 mglkg MM 7/29/2020
Copper, Total EPA 200.7 283 mg/kg MM 7/29/2020
Lead, Total EPA 200.7 4.05 mglkg MM 7/29/2020
Magnesium, Total EPA 2003 5130 mg/kg MM 7/29/2020
Molybdenum, Total EPA 200.7 6.32 mg/kg MM 7/29/2020
Nickel, Total EPA 200.7 15.1 mg/kg MM 7/29/2020
Potassium, Total EPA 200.7 7410 mglkg MM 7/29/2020
Selenium, Total EPA 200.7 2.92 mglkg MM 7/29/2020
Sodium, Total EPA 200.7 4740 mg/kg MM 7/29/2020
Zinc, Total EPA 200.7 836 mglkg MM 7/29/2020
Mercury, Total EPA 245.1 0.569 mg/kg EW 7/16/2020
Nitrate + Nitrite Hach 10206 71.6 mg/kg DW 7/16/2020 1110
Nitrate Nitrogen Hach 10206 71.6 mg/kg DW 7/16/2020 1110
% Solids SM 2540B 2.18 % AW 7/15/2020
Total Kjedjahl Nitrogen SM 4500 N Org B (NH3 D- 125000 mg/kg FK 7/22/2020
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 TeL [phone] Fax: [phone] www.randalabs.com Pagel

RESEARCh & ANAlyTICAI
Report of Analysis
A owoRIES, INC.
8/7i2020
Client Sample ID: Digested Sludge
Lab Sample ID: 84655-01
Site: Orange Water and Sewer Authority
Collection Date: 7/14/2020 9:25
Parameter Method
Result Units
AnalVs{ Analysis DatelTime
^ 2011)
Ammonia Nitrogen SM 4500 NH3 D-2011
68200 mg/kg
FK 7/24/2020
Nitrite Nitrogen SM 4500 NO2 B-2011
<4.59 mg/kg
DW 7/16/2020 1310
Total Phosphorous SM 4500 P E-2011
44800 mg/kg
BJ 7/16/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2

RESEARCk & ANA[yTICAI
-4-� LAboRATOR IES, INC.
`i Analytical / Process Consultations
Phone [phone]
CHAIN OF CUSTODY RECORD
WATER J WASTEWATER MI5C.
COMPANY
Orange Water and Sewer Authority
J08 NO.
CC m� a• CO,
PROJECT
Digested Sludge �=�c4p,y ,shy o�
ER NAME {PLEASE PRIN
C
AAMPLER-SI ATURE _�
Q• C9 ¢ ¢ ¢ Q
�aiR ryv ry4 ya yyo ^� ^ ^" �j`0 REQUESTED ar�Ar YsIs
saw, SAMPLE LOCATION) LD.
STREET ADDRESS
400 Jones Ferry Road
CITY, STATE, ZIP
Carrboro, NC 27510
CONTACT PHONE
SAMPLE NUMBER
{LAB USE ONLY)
DATE
TIME
CCY
GRAB
TEMPI
yC
RES
CI
EMM
are
1_.iL2'
X
35.
NA
N
W
Digested Sludge 6
Metals (Al, Ca,
Cd,Cu,Hg,Mg,
o,Na,Ni,Pb,As,
K, Se, Zn)
Total Phosphorus
TKN
Ammonia Nitro en
Nitrate Nitrogen
Nitrite Nitrogen
NO3+NO2 Nitrogen
Note change oftests requested.
I
RELINQUISHED BY
`
DATEITIME
�ttr.
RECEIVED BY I' i �
r .-I , -;� /� -
REMARKS-
e�TNP 4t Day Ai in cooler packed with crushed ice
SAMPLE TEMPERATURE AT RECEIPT S °C
RELINQUISHED BY
i
DATElniME
Jn 1
RECEIVED BY
'1- �nuULY

RESEARCh & ANA1yTiCAL
LAbORATORIESP INC.
For: Orange Water & Sewer Authority
400 Jones Ferry Road
Carrboro NC 27510
Report of Analysis
10/12/2020
- kQRp1R!ltfr *
0001 �,
fz
RECEIVED = _. NC #37701
Attu: Jennifer Hunter �,,
By Jennifer Hunter at 2:37 pm, Oct 14, 2020 ....."C .�
Client Sample ID: Digested Sludge
Site: OWASA
Parameter
— Method
Nitrate Nitrogen
(SM 4500 NO3 E-2011)-(SM
4500 NO2 B-2011)
Mercury, Total
EPA 245.1
% Solids
SM 2540B
Chloride
SM 4500 CI B-2011
Total Kjedjahl Nitrogen
SM 4500 N Org B (NH3 D-
2011)
Ammonia Nitrogen
SM 4500 NH3 D-2011
Nitrite Nitrogen
SM 4500 NO2 B-2011
Nitrate + Nitrite
SM 4500 NO3 E-2011
Total Phosphorous
SM 4500 P E-2011
Aluminum, Total
SW 846 601 OD
Arsenic, Total
SW 846 6010D
Cadmium, Total
SW 846 601 OD
Calcium, Total
SW 846 601 OD
Chromium, Total
SW 846 601 OD
Copper, Total
SW 846 601 OD
Iron, Total
SW 846 601 OD
Lead, Total
SW 846 6010D
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284
Lab Sample ID:
87405-01
Collection Date:
9/14/2020 10:20
Result
Units
Analyst Analysis Daterrime I
134
mg/kg
LP
9/18/2020
0.589
mg/kg
EW
9/22/2020
2.14
%
AW
9/14/2020
19200
mg/kg
EE
9/18/2020
65400
mg/kg
FK
9/22/2020
22700
mg/kg
FK
9/22/2020
<9.34
mg/kg
LP
9/16/2020
134
mg/kg
LP
9/18/2020
44800
mg/kg
BJ
10/9/2020
53400
mg/kg
MM
9/18/2020
<2.34
mg/kg
MM
9/18/2020
0.948
mg/kg
MM
9/18/2020
18300
mg/kg
MM
9/18/2020
14.9
mg/kg
MM
9/18/2020
449
mg/kg
MM
9/18/2020
18300
mg/kg
MM
9/18/2020
4.37
mg/kg
MM
9/18/2020
Tel: [phone]
Fax: [phone] www.randalabs.com Page 1

RESEARCh & ANALYTICAL Report of Analysis
L.AboRATORIESr INC. 10/12/2020
Client Sample ID:
Digested Sludge
Lab Sample ID:
87405-01
Site:
OWASA
Collection Date:
9/14/2020 10:20
Parameter
Method
Result
Units
wAnal st Analysis DatelTime
Y
Magnesium, Total
SW 846 601 OD
5030
mg/kg
MM
9/18/2020
Manganese, Total
SW 846 601 OD
1670
mg/kg
MM
9/18/2020
Molybdenum, Total
SW 846 601 OD
6.15
mg/kg
MM
9/18/2020
Nickel, Total
SW 846 601 OD
17.0
mg/kg
MM
9/18/2020
Potassium, Total
SW 846 601 OD
6640
mg/kg
MM
9/18/2020
Selenium, Total
SW 846 601 OD
3.60
mglkg
MM
9/18/2020
Silver, Total
SW 846 601 OD
<2.34
mg/kg
MM
9/18/2020
Sodium, Total
SW 846 6010D
5620
mg/kg
MM
9/18/2020
Zinc, Total
SW 846 6010D
834
mg/kg
MM
9/18/2020
Sulfur, Total
SW846 Method 6010 D
10200
mg/kg
MM
9/2112020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2
ral coa i��si� n

RESEARCh & ANAlyTICAI
LAbORATORIES, INC.
Analytical / Process Consultations
Phone [phone]
CHAIN OF CUSTODY RECORD
WATER 1 WASTEWATER I misc.
COMPANY
Orange Water and Sewer Authority
JOB NO
CC
PROJECT + TCLP
Digested Sludge �y
LER NAME (PLEASE PRi T) Q
Sit s� !GN TU
_
U Q OQ' 2'c U ti {j p.
e v V o� � Q Q' Q' c
u,tc'x SAMPLE LOCATION ILD. s ryvti R`Oo y`o h ¢ REQUESTED ANALYSIS
ss`n
STREET ADDRESS
400 Jones Ferry Road
CITY, STATE. ZIP
Carrhoro, NC 27510
CONTACTPHONE
C� 1� 1 ^1
r1��'Rr' C'1V Qi c� '7�— LqzW
SAMPLE NUMBER
{LAB USE ONLY)
DATE
TIME
Com
GRAB
TEN
"C
RES
CI
"wwrNE
+orc
rRr�
X
A
N
W
IDigested Sludge
Metals (Ag, Al, Ca,
I
Cd,Cr,Cu,Fe,Hg,Mg,
n,Mo,Na,Ni,Pb,As,
K, Se, Zn)
Sulfur
Total Phosphorus
Chloride
TKN
.TS
Ammonia Nitrogen
Nitrate Nitrogen
Nitrite Nitrogen
NO3+NO2 Nitrogen
TCLP
Note ch<mige in regested tests
RELINQUI!!
\
OATEM E
9^4.20
!O 45
RECEIVED BY
�s ��
REMARKS:
shipped in cooler packed with crushed ice
SAMPLE TErOPERATURE AT RECEIPT i °C
RELINQ SHFD BY
DATEf'IME
RECEIVE IBy
J

RESEARCh & ANAtyTiCAt
LAbORATORIES, INC.
Analytical/Process Consultations
Toxicity Characteristic Leachate Procedure (TCLP) Analysis of Sample Identified as Digested Sludge + TCLP
(An Orange Water & Sewer Authority Project, collected 14 September 2020)
,��a�•�b tt���Nh
F f NO WU
Digested Sludge
EPA HW Quantitation Results Characteristic
Number Contaminant Limit(ma/Ll m /L Level(me/L1 EPA Method
I. TCLP METALS
D-004 Arsenic
0.01
BQL
5.00
6010
D-005 Barium
0.1
BQL
100
6010
D-006 Cadmium
0.005
BQL
1.00
6010
D-007 Chromium
0.01
BQL
5.00
6010
D-008 Lead
0.005
BQL
5.00
6010
D-009 Mercury
0A02
BQL
0.200
7470
D-010 Selenium
0.1
BQL
1.00
6010
D-011 Silver
0.01
BQL
5.00
6010
II. TCLP VOLATILES
D-018 Benzene
0.050
BQL
0.500
8260
D-019 Carbon Tetrachloride
0.050
BQL
0.500
8260
0-021 Chlombenzene
0.050
BQL
100
9260
D-022 Cliloroform
0.100
BQL
6.00
8260
D-028 1,2-Dichlamedume
0.050
BQL
0.500
8260
D-029 l.l-Dichloroethylene
0.050
BQL
0.700
8260
D-035 Methyl Ethyl Ketone
0.500
BQL
200
8260
D-039 Tetrachlomethylene
0.050
BQL
0.700
8260
D-040 Ttichlomethylene
0.050
BQL
0.500
8260
D-043 Vinyl Chloride
0.050
BQL
0.200
8260
lIL TCLP SEMI-VOLATILES
D-023 0-Craesol
20.0
BQL
200
8270
D-024 M-Crcosol
20.0
BQL
200
8270
D-025 P-Creosol
20.0
BQL
200
8270
D-026 Creosol
20.0
BQL
200
8270
D-027 1,4-Dichlorobenzene
0.750
BQL
7.50
8270
D-030 2,4-Dinitrotoluene
0.050
BQL
0.130
8270
D-032 Hexachlorobenzene
0.050
BQL
0.130
8270
D-033 Hexachlombutadiene
0.050
BQL
0.500
8270
D-034 He=lloroctbane
0.300
BQL
3.00
8270
D-036 Nitrobenzene
0.200
BQL
2.00
8270
D-037 Pentachlomphenol
10.0
BQL
100
8270
D-038 Pyridine
0.500
BQL
5.00
8240
D-041 2,4,5-Trichlomphenal
40.0
BQL
400
8270
D-042 2,4,6-Trichlorophenoi
0.200
BQL
2.00
8270
IV. TCLP PESTICIDES/HERBICIDES
D-020 Chlordane
0.003
BQL
0.030
8081
D-016 2,4-D
1.000
BQL
10.0
8151
D-012 Endrin
0.002
BQL
0.020
8081
D-031 Heptachlor
0.0008
BQL
0.008
8081
D-013 Lindanc
0.040
BQL
0.400
8081
D-014 Methoxychlor
1.000
BQL
10.0
808)
D-015 Toxaphene
0.050
BQL
0.5D0
8081
D-017 2,4,5-TP(Silvex)
0.500
BQL
1.00
8151
V. REACTIVITY
D-003 Cyanide
1.0
BQL
9010
D-003 Sulfide
5.0
BQL
9030
Vi. CORROSIVITY
D-002 pH
Std. Units
8.16
9045
VIL 1GNITABILITY
D-001 lgtitability
>141
1010
VIIL TCLP MISCELLANEOUS
Paint Filter Test
FLP
Sample Number
87405-01
Sample Date
09/14/20
Sample Time (brs)
1020
Sample Matrix
Sludge
mglkg = milligrams per kilogram = parts per million (ppm)
NFL = No Free Liquids
WNI = Will Not ignite
mP%L - milligrams per Lim - Parts Per million (Plan)
BQL = Below Quantitation Limits
FLP - Free Liquids Present

Pace Analytical Services, LLC
/ a ® Short
I ceAnalytical Kernersvillele, NC 27284
www.pacolahs.com 336-996-2841
Page 1 of 2
Laboratory Report
Monica Dodson Report Date: 01/07/2021
OWASA Date Received: 12/21/2020
400 Jones Ferry Road
Carrboro, NC 27510 RECEIVED
Project: Digested Sludge By Jennifer Hunter at 1:49 pm, Jan 14, 2021
Pace Project No.: 92513157
Sample: Digested Sludge Lab ID: 92513157001 Collected: 12/21/20 08:00 Matrix: Water
Comments: • 12/23/20 @ 1455 - Added 10ml HNO3 to Metals bottle prior to analysis. Sample would not hold a ph<2
Method
EPA 200.7 Rev. 4.4,
1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 200.7 Rev 4.4 1994
EPA 245.1 Rev 3.0 1994
SM 2540B-2011
EPA 300.0 Rev 2.1 1993
EPA 350.1 Rev 2.0 1993
EPA 351.2 Rev 2.0 1993
EPA 353.2 Rev 2.0 1993
EPA 353.2 Rev 2.0 1993
EPA 353.2 Rev 2.0 1993
EPA 365.1 Rev 2.0 1993
ANALYTE QUALIFIERS
Parameters
Results
Units
Report Limit
Analyzed
Sulfur
20300
ug/L
2500
12/29/2012:34
Aluminum
41600
ug/L
100
01/01/2121:10
Arsenic
ND
ug/L
10.0
01/01/2121:10
Cadmium
1.0
ug/L
1.0
01/01/2121:10
Calcium
14400
ug/L
100
01/01/2121:10
Chromium
113
ug/L
50.0
01/04/2102:47
Copper
2040
ug/L
50.0
01/04/2102:47
Iron
11700
ug/L
50.0
01/01/2121:10
Lead
7.7
ug/L
5.0
01/01/2121:10
Magnesium
4040
ug/L
100
01/01/2121:10
Manganese
354
ug/L
5.0
01/01/2121:10
Molybdenum
ND
ug/L
5.0
01/01/2121:10
Nickel
12.3
ug/L
5.0
01/01/2121:10
Potassium
9820
ug/L
5000
01/01/2121:10
Selenium
ND
ug/L
10.0
01/01/2121:10
Silver
ND
ug/L
5.0
01/01/2121:10
Sodium
7970
ug/L
5000
01/01/2121:10
Zinc
782
ug/L
10.0
01/01/2121:10
Mercury
2.9
ug/L
0.20
12/30/2011:41
Total Solids
11100
mg/L
2500
12/26/20 12:09
Chloride
ND
mg/L
1.0
12/24/20 03:12
Nitrogen, Ammonia
1280
mg/L
25.0
12/22/20 13:49
Nitrogen, Kjeldahl, Total
1080
mg/L
50.0
12/30/20 06:34
Nitrogen, NO2 plus NO3
0.65
mg/L
0.040
12/23/20 01:17
Nitrogen, Nitrate
0.60
mg/L
0.040
12/23/20 01:17
Nitrogen, Nitrite
0.058
mg/L
0.040
12/23/20 01:17
Phosphorus
620
mg/L
10.0
12/29/20 22:22
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
M6 Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution.
R1 RPD value was outside control limits.
Reviewed by:l
Kevin Herring for
Stephanie Knott
336-996-2841
[e-mail]
Qualifiers
M6, R1
M1
M1
Page 1 of 3

aceAnalytical
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Kernersville, NC 27284
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RESEARCH ANAi T(C" i ,
LkoRATORiES, INC. WO# • 92513157
Analytical / Process Consultations 111111111111111 1111111
Phone [phone] 92513157
CHAIN OF CUSTODY RECORD
WATER I WASTEWATER misc.
CO
0
CO
N
C
CL
CL
OMPANY
range Water and Sewer Authority
JOB NEB.
CC � �0.
PROJECT
Digested SludgeT- 41��
SAMPLER NAiVlE (PLEASE PRINT) ��` g01
z ����� 3,
SAMPLER SIGNATURE � t a Az } �
��, O
TJ 4 S U Q Qr C7 C? ti
S"mPiz o �Y� ��F ¢ .YC� ^Q �¢ ,v¢ �Q
isI SAMPLE LOCATIONIJ.D. ry r} ry REQUESTED ANALYSIS
STREET ADDRESS
400 Jones Ferry Road
C;TY, STATE ZIP
Carrboro, NC 27510
CONTACT PHONE
SAMPLE NUMBER
(LABusEOkLY)
BATE
TIME
.0 PGRAB
M
RESoYo
CI
"lwN7
fL-zj-Z,-s
X
-`jNA
N
W
Digested Sludge
6
Metals(Ag, Al, Ca,
Cd,Cr,Cu,Fe,Hg,Mg,
n,Mo,Na,Ni,Pb,As,
K, SE, Zn)
Sulfur
Total Phosphorus
Chloride
TKN
oTS
Ammonia Nitrogen
Nitrate Nitrogen
Nitrite Nitrogen
NO3+NO2 Nitrogen
Note change in regested tests
RELINQUIS Y
DAT}1M EE
jZ-41
r�
RECEIVEDBY•'
5t� I CJY 1•'
ls
21 �\ z P��
REMARKS:
1'\% ��.i J`-Yi2�
shipped ( in cooler packed with crushed ice
SAMPLE TEMPERATURE AT RECEIPT � � °C '�`
REL1N011ISH BY
DATEIfWE
\Ll
RECEIVED), BY