NC0067342_EPA Facility Assessment Report 11/29/2018_20181029

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 4
Science and Ecosystem Support Division
Field Services Branch
980 College Station Road
Athens, Georgia 30605-2720
November 29, 2018
MEMORANDUM
SUBJECT: (Revision #2) NPDES Diagnostic Evaluation Report Transmittal
Northview Mobile Home Park WWTP
Weaverville, North Carolina
SESD Project ID: 18-0570
FROM: Chris McHugh, Environmental Engineer
Enforcement Section
Science and Ecosystem Support Division
Athens, Georgia
THRU: Mike Bowden, Chief
Enforcement Section
TO:
Science and Ecosystem Support Division
Athens, Georgia
Dennis Sayre, Acting Chief
Municipal and Industrial Enforcement Section
Water Protection Division
Atlanta, Georgia
Attached is a revised copy of the NPDES Diagnostic Evaluation (DE) Report for the inspection
conducted at the Northview Mobile Home Park WWTP located at Northview Park Road, Weaverville,
NC. The DE was conducted from July 16-18, 2018. the recommendations included in this report reflect
the operational conditions and configuration of the WWTP at the time of the EPA evaluation.
Suggestions and recommendations should be reviewed and implemented applicable to the current
WWTP unit processes. The report was revised to correct the clarifier volume stated in Table 9 on page
18 and to change the name of acting chief from David Apanian to Dennis Sayre. The revisions do not
affect any subsequent calculations in the report. This revised report supersedes the original report.
Please forward copies of the report to the appropriate parties. If you have any questions concerning the
diagnostic evaluation, please call me at [phone] or email me at [e-mail].
Attachment:
Cc (via email): Gracy Danois, USEPA, WPD, NPDES Permitting and Enforcement Branch
Andrea Zimmer, USEPA, WPD, NPDES Permitting and Enforcement Branch
Sara Schiff Janovitz, USEPA, WPD, State of North Carolina Pacesetter
Mary Mattox, USEPA, WPD, NPDES Permitting and Enforcement Branch
SESD ID: 18-0570 Final Report Page 1 of 58
Project ID: 18-0570
NPDES Diagnostic Evaluation
Report (Revision 2)
Northview Mobile Home Park WWTP
Northview Park Road
Weaverville, NC, 28787
Project Date: July 16-18, 2018
Report Date: November 29, 2018
Project Leader: Chris McHugh
Environmental Engineer, EIT
Enforcement Section
Field Services Branch
Science & Ecosystem Support Division
USEPA – Region 4
980 College Station Road
Athens, Georgia 30605-2720
The activities depicted in this report are accredited under the US EPA Region 4 Science and
Ecosystem Support Division ISO/IEC 17025 accreditation issued by the ANSI-ASQ National
Accreditation Board. Refer to certificate and scope of accreditation AT-1644.
SESD ID: 18-0570 Final Report Page 2 of 58
Approvals:
SESD Project Leader:
Chris McHugh, Environmental Engineer
Enforcement Section
Field Services Branch
Science and Ecosystem Support Division
Date
Approving Official:
Mike Bowden, Chief
Enforcement Section
Field Services Branch
Science and Ecosystem Support Division
Date
Requestor:
Dennis Sayre, Acting Chief NPDES Permitting and Enforcement Branch Water Protection Division USEPA – Region 4 61 Forsyth Street SW Atlanta, GA, 30303-8960
Analytical Support:
Science and Ecosystem Support Division
U.S. EPA Region 4
980 College Station Rd
Athens, GA, 30605
11/08/2018
11/08/2018
SESD ID: 18-0570 Final Report Page 3 of 58
Table of Contents
1.INTRODUCTION................................................................................................................. 4
2.BACKGROUND ................................................................................................................... 5
3.SUMMARY AND RECOMMENDATIONS ...................................................................... 5
4.FACILITY SITE REVIEW ................................................................................................. 6
5.PERMIT................................................................................................................................. 7
6.RECORDS AND REPORTS ............................................................................................... 8
7.FLOW MEASUREMENT ................................................................................................... 8
8.SLUDGE HANDLING ......................................................................................................... 9
9.SAMPLING ........................................................................................................................... 9
9.1 FACILITY SAMPLING ........................................................................................................ 9
9.2 USEPA SAMPLING ACTIVITIES ...................................................................................... 10
9.3 USEPA SAMPLING RESULTS ......................................................................................... 11
9.4 USEPA PROCESS CONTROL RESULTS............................................................................ 12
9.4 USEPA SAMPLING METHODOLOGY .............................................................................. 15
10.EFFLUENT AND RECEIVING WATERS ................................................................. 15
11.REFERENCES ................................................................................................................ 16
List of Tables
TABLE 1 - INSPECTION PERSONNEL .................................................................................. 4
TABLE 2 - FLOW MEASUREMENT DEVICE COMPARISON .......................................... 8
TABLE 3 - TYPICAL CONCENTRATIONS OF UNTREATED DOMESTIC
WASTEWATER** ............................................................................................................. 10
TABLE 4 - SESD SAMPLING RESULTS ............................................................................... 11
TABLE 5 - SESD IN-SITU SAMPLING RESULTS ............................................................... 12
TABLE 6 - PROCESS CONTROL RESULTS SUMMARY ................................................. 13
TABLE 7 - NEW ASB IN-SITU PROFILE ............................................................................ 14
TABLE 8 - OLD ASB IN-SITU PROFILE .............................................................................. 15
TABLE 9 - LEGEND FOR FIGURE 2 ..................................................................................... 18
TABLE 10 – OLD-ASB SETTLOMETER TEST RESULTS ................................................ 38
TABLE 11 – NEW-ASB SETTLOMETER TEST RESULTS ............................................... 38
List of Figures
FIGURE 1 – NORTHVIEW MOBILE HOME PARK WWTP FLOW DIAGRAM ............ 7
FIGURE 2 - NORTHVIEW MOBILE HOME PARK WWTP TREATMENT UNIT
DIMENSIONS ..................................................................................................................... 18
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NPDES Diagnostic Evaluation
Northview Mobile Home Park WWTP (Permit No. NC0067342)
1. Introduction
During the week of July 16, 2018, representatives of the U.S. Environmental Protection Agency
(USEPA) Region 4 Science and Ecosystem Support Division (SESD) and the North Carolina
Department of Environmental Quality (NCDEQ) conducted a National Pollutant Discharge
Elimination System (NPDES) Diagnostic Evaluation (DE) of the Northview Mobile Home Park
Wastewater Treatment Plant (WWTP) in Weaverville, North Carolina. The inspection was
requested by the NCDEQ Asheville Regional Office to evaluate the plant’s treatment
performance and operation, and to collect samples from the influent and effluent. The effluent
samples were evaluated to determine if the treated wastewater was within permit limits. The
following people listed in Table 1 participated in the inspection.
Table 1 - Inspection Personnel
Inspector Organization Date on site
Chris McHugh USEPA Region 4 SESD 7/16/18 – 7/18/18
Louis Salguero USEPA Region 4 SESD 7/16/18 – 7/18/18
Cornell Gayle USEPA Region 4 SESD 7/17/18 – 7/18/18
Linda Wiggs NCDEQ Asheville
Regional Office 7/16/18 – 7/18/18
Landon Davidson NCDEQ Asheville
Regional Office 7/16/18 – 7/17/18
The diagnostic evaluation included the following tasks:
•Assessing the design, operations, and management factors limiting treatment
performance.
•Review of operations and management of the wastewater treatment plant.
•Evaluation of the unit process performance via visual observations, field
measurements, sampling, data review, and process control testing.
•Determination of the unit process operating parameters (e.g. TSS, TVSS, F/M,
SVI, and Sludge Age).
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•Evaluation of the NPDES self-monitoring program, including sampling, flow
measurements, records and reports, and laboratory procedures.
2. Background
The Northview Mobile Home Park WWTP is a privately-owned municipal wastewater treatment
plant that serves Northview Mobile Home Park, consisting of approximately 170 mobile homes.
The facility is designed to operate as an extended aeration plant that consists of an original
package plant with an aeration basin, Imhoff clarifier, and digester, as well as a newer aeration
basin, circular clarifier, and chlorine contact chamber. It is permitted to discharge 0.032 MGD to
receiving waters designated as Flat Creek in the French Broad River Basin. Currently, the facility
is under a Statutory Tap Moratorium because the NCDEQ Asheville Regional Office deemed it
unable to adequately treat the volume of wastewater flow it receives daily.
3. Summary and Recommendations
The purpose of this Diagnostic Evaluation was to evaluate the overall operation and maintenance
of the plant’s treatment systems, review the operating records, and historical data relevant to
plant operations associated with permit requirements, and provide technical recommendations to
improve plant’s performance. SESD evaluated the Northview Mobile Home Park treatment
processes and facility conditions, flow measurement system, sludge handling procedures, and
NPDES sampling. This report reflects the operation and configuration of the WWTP at the time
of the inspection.
During the evaluation, two 24-hour composite influent wastewater samples were collected from
the headworks of the plant. In addition, three 24-hour effluent composite samples were collected
just before the outfall location. Influent and effluent samples were analyzed for Biochemical
Oxygen Demand (BOD 5 ), Total Suspended Solids (TSS), Ammonia (NH 3 ), Nitrite-Nitrate
(NO 3 - NO 2 ), Total Kjeldahl Nitrogen (TKN), Total Phosphorus, and Alkalinity. In-situ
parameters (pH, dissolved oxygen (DO), Total Residual Chlorine, and temperature) were also
measured at the effluent sampling location.
Grab samples were collected from the two aeration basins and analyzed for TSS and Total
Volatile Suspended Solids (TVSS) to gather more information for process control testing and
operating calculations. In-situ parameters (pH, dissolved oxygen, specific conductivity, and
temperature) were measured in both basins as well.
The major findings were as follows:
•The circular clarifier had sludge blanket depth covering 8.5 feet out of 10 feet total
depth, and the polishing clarifier had 5.5 feet covering 10 feet total depth.
•During the inspection, it was observed that the circular clarifier weir plates were
covered in solids when the influent flow rate increased. (See photo # 7, #12).
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•The dissolved oxygen levels in the aeration basins were below 1 mg/L, right after the
aeration diffused blowers were turned off. The blowers are set to run 15 minutes every
hour. DO levels recommended for extended aeration are 1 to 3 mg/l (Metlcalf & Eddy,
2014)
•The secondary flow measurement device was showing inconsistent readings during the
time of the inspection and was not within the accepted accuracy requirement of ±10 %
of the primary flow measurement device. Outlined in Table 2, the facility’s secondary
device was 66% – 69.4% lower than the instantaneous flow check made at the primary
device.
•There was no permanently installed staff gage to measure the water level above the weir
plate.
•The flow totalizer was not functioning properly during the inspection.
•There were noticeable amounts of floating solids and debris in the chlorine contact
chamber. (See photo # 9).
•The effluent sample setup was not properly installed. The sample tubing dips
downward over the chlorine contact chamber side wall into a PVC pipe before being
routed to the automatic sampler. This creates a section of tubing that could improperly
store the wastewater, adversely affecting the purging cycle of the sampler.
•The Total Residual Chlorine measured at the pipe opening just before outfall was 370
µg/L, well above the permit limit of 28 µg/L.
Recommendations are as follows:
•Continue to monitor sludge levels throughout the plant and waste more frequently to
prevent accumulation of sludge in the clarifiers. As conditions permit, sludge should
not be removed more the 10 percent above previous levels during sludge wasting cycles
to allow the biological system to stabilize and allow the operators to adequately assess
plant conditions.
•Consider modifying the aeration schedule to better balance the on/off cycle which will
create a more stable environment for the microorganisms. The mixed liquor DO levels
and effluent pH should be carefully monitored, more frequently if necessary to help
achieve the right balance.
•Install a measurement device such as a staff gage so that the water level above the weir
can accurately be measured.
•Have scheduled maintenance plans in place for broken equipment, such as the flow
totalizer, to repair it on a timely basis.
•Modify the effluent sampling tubing setup so that there are no unnecessary dips in the
line that could affect the purge cycle of the sampler.
•Determine the correct dosage of chlorination and dechlorination tablets required to
adequately disinfect the effluent flow without exceeding the permit limits for Total
Residual Chlorine.
4.Facility Site Review
The WWTP is configured as an extended aerated system. Modifications to the original package
plant include the addition of the new aeration basin, circular clarifier, and contact chamber. (See
Figure 1). Influent wastewater enters the plant (see photo # 1) and splits between the new and old
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aeration basins and the equalization basin. (See photo # 4, # 5). Following aeration, the flow
from both basins is sent to the circular clarifier. Return activated sludge (RAS) is diverted back
to the aeration basins, and waste activated sludge (WAS) is thickened and decanted in the
digester before being hauled to a landfill. Afterwards the circular clarifier, flow is sent to a
polishing clarifier (Imhoff tank). The old chlorine contact chamber serves as an additional
retention unit before flow enters the new contact chamber, where tablets are used to chlorinate
and dechlorinate the effluent before final discharge. The old chlorine contact chamber could be
used to chlorinate the effluent, and the new contact chamber could be used to allow proper
detention time for disinfection. Currently the chlorination and dechlorination is all applied in the
new chlorine contact chamber seen in Figure 1.
Figure 1 shows the flow diagram of the facility as determined by the facility operator and by
visual observation during the inspection. Table 9 in Appendix A lists the size of each treatment
unit, measured during the inspection.
Figure 1 – Northview Mobile Home Park WWTP Flow Diagram
5.Permit
The Northview Mobile Home Park WWTP permit (NC0067342) became effective on April 1,
2018 and will expire on March 31, 2023. The Northview Mobile Home Park and the wastewater
treatment plant serving the homes are both owned by the Eaven Brice Partnership. Under the
permit, the Eaven Brice Partnership can operate the existing 0.032 MGD extended aeration
wastewater treatment facility, and after obtaining an Authorization to Construct permit from
NCDEQ, construct and operate a 0.050 MGD facility to incorporate more wastewater from new
homes.
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6.Records and Reports
As part of a settlement agreement with NCDEQ, the facility is required to submit monthly
process control logs that show process control weekly results. The log shows dissolved oxygen
and MLSS concentrations in the aeration basins, settlometer test results, clarifier sludge blanket
depth, solids removed from the digester, and average flow. At the time of inspection, the facility
was reporting the log each month. The facility should continue to perform the process control
checks and maintain process control logs each month to help track the facility’s solids inventory
and manage proper solids wasting.
It was observed in the June 2018 and August 2018 logs that process control results for sludge
blanket depth weren’t consistently recorded. The facility should keep track of the sludge blanket
depth in the clarifiers and dissolved oxygen levels and settlometer test results for both aeration
basins. This will help to provide information of possible process control adjustments to ensure
that both basins are operating efficiently.
7.Flow Measurement
The effluent flow measurement system is composed a of 90 ⁰ v-notch weir primary device and an
ultrasonic flow meter as a secondary flow measurement device. At the time of the inspection the
flow meter totalizer wheel was not recording flow. Additionally, the digital instantaneous flow
reading was very inconsistent. The digital value was fluctuating from 1 gallon per minute to
upwards of 40 gallons per minute in a five-minute time span.
Table 2 - Flow Measurement Device Comparison
Flow Device Device Type Flow (GPM) Percent Error Date and Time
90⁰ v-notch Weir Primary 17.66
(instantaneous) 66.0% 7/18/2018
12:45 pm Ultrasonic
sensor Secondary 6.00
90⁰ v-notch Weir Primary 17.66
(instantaneous) 69.4% 7/18/2018
12:40 pm Ultrasonic
sensor Secondary 5.4
Shown in Table 2, comparisons between the primary and secondary flow devices were made by
converting the instantaneous head measurement from the 90⁰ v-notch Weir to instantaneous flow
measurement and comparing that value with the secondary ultrasonic sensor instantaneous flow
reading. The two comparisons between the primary and secondary flow devices indicated a flow
measurement difference of 66.0% and 69.4% which is outside the USEPA accepted accuracy
range of ±10% difference.
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Deficiency:
The facility’s flow meter is outside of the 10 % difference with the primary flow device. The
flow totalizer was not recording flow on the paper wheel.
Regulatory Requirement: 40 CFR, Part 122.41 (e), Proper Operation and Maintenance.
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control and related appurtenances which are installed or used by the permittee to
achieve compliance with the conditions of this permit. According to the “NPDES Compliance
Inspection Manual, 2017,” The permittee's flow measurements should be within 10 percent of the
inspector's measurements to certify accurate flow measurement.
8.Sludge Handling
The Northview Mobile Home Park WWTP uses a septic tank company to dispose sludge from
the digester. At the time of the inspection, the circular clarifier had a sludge blanket depth of 8.5
feet. (See photo # 11). The total depth of the clarifier is 10 feet. Additionally, the polishing
clarifier (Imhoff tank) had a sludge blanket of 5.5 feet with a total depth of 10 feet. The chlorine
contact chamber also had a sludge blanket of 0.25 feet with a total depth of 7.5 feet. (Note: the
accumulated sludge in the chlorine contact chamber was pumped before the sludge depth
measurement was taken). Typically, the sludge blanket depth should be kept to less than one-
fourth of the clarifier sidewall water depth (CSU 2008).
During the inspection, the digester was determined to have a storage capacity of about 3000
gallons. (See Table 9). Based on the amount of sludge build up throughout the plant, the facility
should waste more sludge to the digester.
On July 18, 2018, the facility had its digester pumped and the waste disposed of in a nearby
landfill. (See photo # 3, # 15). Based on the sludge depth throughout the plant, it is
recommended that the operator increase gradually the amount of WAS. Sludge management is a
critical component to properly operate an activated sludge treatment system.
9.Sampling
9.1 Facility Sampling
The permittee collected samples according to the sampling frequencies and sample types
described in the permit. The facility collected the effluent flow composite samples with an
automatic sampler. At the time of the inspection, it was difficult to observe the facility’s sampler
collect a sample aliquot. The sampling frequency was sporadic and didn’t correlate to the flow
composite sampler that the USEPA set to run at the same time as the facility.
Deficiency:
EPA also observed that the tubing running from the sampling location to the composite sampler
did not allow the sampler to properly purge the tubing before collecting a sample aliquot. The
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sample tubing should not have unnecessary bends or dips because it can store effluent
wastewater during the purge cycle.
Regulatory Requirement:
40 CFR, Part 122.41 (e), Proper Operation and Maintenance. The permittee shall at all times
properly operate and maintain all facilities and systems of treatment and control and related
appurtenances which are installed or used by the permittee to achieve compliance with the
conditions of this permit.
Recommendation:
The facility should reconfigure the tubing setup, by removing the current PVC conduit and adjust
the slope of the PVC conduit underground to avoid tubing bending.
9.2 USEPA Sampling Activities
During the inspection, sampling was conducted to determine if the facility was meeting its
effluent permit limits as well as to characterize the influent waste stream and to evaluate the
operating parameters of the plant. On July 16, 2018, sampling equipment was setup at the
facility’s influent and effluent locations to collect 24-hour composite samples. (See photos # 2, 9,
and 13). After collecting the samples on July 18, 2018, the samplers were programmed to collect
a second set of 24-hour composite samples. Process control samples in both the new and old
aeration basins (ASB) were collected to measure the TSS and TVSS concentrations. These
samples were collected as grab samples.
Additionally, a third effluent composite sampler paced by constant 15-minute intervals was set
up on July 17, 2018, because of difficulties using a flow meter to pace the sampling. The
difficulties encountered while setting up the flow meter were because there was no staff gage to
measure the water level above the weir plate and the ability to accurately determine the level
using a handheld level. See photo #10.
Table 3 shows a comparison of USEPA influent analytical results and typical influent
wastewater concentrations. The strength of the incoming TSS, BOD 5 , NH 3 , and TKN
concentrations was high. This high strength influent is typical in plants of which the only influent
source are single residential areas such as mobile home parks. There are no other inflow and
infiltration sources to dilute the incoming waste concentration which is typically seen at larger
domestic wastewater treatment plants.
Table 3 - Typical Concentrations of Untreated Domestic Wastewater**
Strength in (mg/L) USEPA SAMPLING
Analysis Low Medium High INF001 INF002
NH 3 14 20 41 54 48
TKN 23 35 69 88 78
NO 3 -NO 2 0* 0* 0* .077 .078
P 3.7 5.6 11 14 12
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BOD 5 133 200 400 330 300
TSS 130 195 389 780 820
*Trace concentrations
**Wastewater Engineering: Treatment and Reuse 5th edition, Metcalf & Eddy, 2014. McGraw-
Hill Inc. NYC
9.3 USEPA Sampling Results
Table 4 highlights the USEPA sampling analytical results for the influent and effluent locations
as well as process control locations. As seen in the EFF002 and EFF003 results, pacing by flow
and by time provided comparable results, and the effluent being discharged met permit limits for
each EFF001, EFF002, and EFF003. See Appendix D, SESD Final Analytical Results for a
complete listing of analytical data.
Table 4 - SESD Sampling Results
Station
ID
EFF001
*
EFF002
**
EFF003
*** INF001 INF002 NEW-
ASB
OLD-
ASB
Type Composite Composite Composite Composite Composite Grab Grab
Date 7/17/18 7/18/18 7/18/18 7/17/18 7/18/18 7/17/18 7/17/18
Time 10:25 11:17 11:30 11:10 11:00 15:00 15:00
Analyte mg/L mg/L mg/L mg/L mg/L mg/L mg/L
NH 3 as N 0.90 0.098 0.12 54 48 - -
TKN 4.7 3.7 3.8 88 78 - -
NO 3 -NO 2 0.078 0.050 U 0.050 U 0.077 0.078 - -
Alkalinity 160 150 160 370 330 - -
P 1.5 1.4 1.2 14 12 - -
BOD 5 4.0 J, K 4.0 J, K 4.0 J, K 330 J. L 300 J, L - -
TSS 5.2 5.0 U 5.0 U 780 820 4700 4100
TVSS - - - - - 3800 3300
Notes: The laboratory report includes the definition of Region 4 Analytical Data Qualifiers,
which is included in Appendix D.
*EFF001 Flow proportional sample finished sampling in approximately 8 hours due to
average daily flow being much higher than anticipated.
**EFF002 Time proportional sample run simultaneously with EFF003 to ensure 24-hour
composite sample
***EFF003 Despite recalculating flow pacing volume, sampler still finished in
approximately 12 hours due to average daily flow being higher than anticipated.
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Table 5 - SESD In-situ Sampling Results
Analysis pH Specific
Conductivity Dissolved Oxygen Total Residual
Chlorine
Units Standard Units µs/cm mg/L µg/L
Sample ID
EFF002
and
EFF003
6.99 660 3.21 370
Shown in Table 5, in-situ parameters were measured at the time of effluent sample collection on
7/18/18.
Deficiency:
The Total Residual Chlorine was 370 µg/L, which exceeds the daily maximum permit limit.
Regulatory Requirement:
NC0067342 Section 3.A.(1) states that the Total Residual Chlorine daily maximum is 28 µg/L.
Recommendation:
The facility should adjust the amount of chlorination and dechlorination to meet permit limits.
9.4 USEPA Process Control Results
The following process control tests were conducted:
•Settlometer test, dissolved oxygen profile in the aeration tanks, and sludge blanket
depths in the clarifiers.
•Microorganism evaluation of grab samples from aeration basins using a standard
phase/contract microscope. (See photo # 14).
•Unit process operating parameters were also calculated to determine if the
hydraulic and organic loadings were within the recommended range of operation
and design for an extended aeration unit.
Table 6 outlines the results of the process control tests and calculations conducted during the
inspection. Based on the results and visual observations, the facility is operating with excess
solids. This is evident by a low F/M ratio (high concentration of microorganisms, MLVSS
compared to food, BOD 5 ), high sludge blanket depths in both clarifiers, and a sludge age that is
on the high range. Additionally, the dissolved oxygen profile indicates that the current blower
schedule is causing the aeration basins to go into anoxic states shortly after blowers are cycled
off. At the time of the inspection, the blower schedule was set to run for 15 minutes every hour.
The facility should evaluate the volume of solids in its system and gradually remove more solids
on a regular basis. This will lower the MLSS concentration in the aeration basin, reduce the
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sludge blanket depths in the clarifiers and prevent further solids loss during peak flow events.
Typically, facilities use an operating strategy for sludge wasting such as maintaining a target
F/M ratio, constant MLVSS concentration, or target Mean Cell Residence Time (MCRT).
Additionally, the blower on/off cycle should be evaluated to maintain the aeration basins DO
levels above 1 mg/L (recommended DO levels: 1 mg/L to 3 mg/L). This will create a healthy
biomass environment. A gradual reduction in the solids inventory would allow for proper DO
levels with less aeration requirements and subsequently less power consumption. Careful
consideration of the plant’s effluent quality should be noted when making changes to the solids
inventory.
Table 6 - Process Control Results Summary
Process Control
Parameters Results
Recommended
Range for Extended
Aeration
Comments
SSV 30 New-ASB 950 mg/L 300-500 mL/L Poor/Slow settling
SSV 30 Diluted New-ASB 500 mg/L <300 mL/L Poor/Slow settling
Mixed Liquor
Suspended Solids
(MLSS) (New-ASB) 4700 mg/L 2000-5000 mg/L High end of range
Mixed Liquor
Volatile Suspended
Solids (MLVSS)
(New-ASB)
3800 mg/L 70-80% of MLSS 80.9%, high end of
range
Sludge Volume Index
(SVI) (New-ASB) 202 mL/g 100-150 mL/g Poor Settling
Dissolved Oxygen
(New-ASB) See table 7* 2.0-3.0 mg/L
SSV 30 Old-ASB 870 mg/L 300-500 mL/L Poor settling
SSV 30 Diluted Old-ASB 450 mg/L <300 mL/L Poor settling
Mixed Liquor
Suspended Solids
(MLSS) (Old-ASB) 4100 mg/L 2000-5000 mg/L High end of range
Mixed Liquor
Volatile Suspended
Solids (MLVSS)
(Old-ASB)
3300 mg/L 70-80% of MLSS 80.4%, at high end of
range
Sludge Volume Index
(SVI) (Old-ASB) 212.2 mL/g 100-150 mL/g Poor Settling
Dissolved Oxygen
(Old-ASB) See table 8* 2.0-3.0 mg/L Low DO.
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Process Control
Parameters Results
Recommended
Range for Extended
Aeration
Comments
Sludge Blanket Depth Circular: 8.5 ft
Polishing: 5.5 ft
The clarifier depths
are 10 feet each High
Sludge Age for entire
aeration basin system 14.3 days 10 – 15 days Older sludge
Hydraulic Retention
Time (HRT) for
entire aeration basin
system
3.16 days 1-5 days Within range
F/M Ratio for entire
aeration basin system 0.0275 .05-.15 Low F/M,
Table 7 - NEW ASB In-Situ Profile
5 Minutes After Aeration 30 Minutes After Aeration
Front Middle End Front Middle End
Depth pH in Standard Units
1 ft 7.12 7.18 7.23 7.1 7.05 7.17
5 ft 7.15 7.17 7.24 7.09 7.07 7.05
10 ft 7.17 7.18 7.23 7.09 7.09 7.08
Specific Conductivity in µs/cm
1 ft 675 663 660 675 665 668
5 ft 664 665 663 671 665 665
10 ft 672 661 662 670 665 665
Dissolved Oxygen in mg/L
1 ft 3.2 1.42 1.28 0.8 0.6 0.45
5 ft 2.14 1.04 1.22 0.65 0.39 0.37
10 ft 1.64 0.85 1.15 0.58 0.61 0.35
Temperature in ⁰C
1 ft 25.7 25.8 25.9 26.1 26.4 26.6
5 ft 25.7 25.8 25.8 26.0 26.0 26.2
10 ft 25.7 25.8 25.7 26.0 26.1 26.1
Where,
Front is at the beginning of the basin where flow enters;
Middle is approximately in the middle of the basin;
End is at the other end of the basin where flow leaves
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Table 8 - OLD ASB In-Situ Profile
5 Minutes After Aeration 30 Minutes After Aeration
Front Middle End Front Middle End
Depth pH in Standard Units
1 ft 7.29 7.26 7.26 7.13 7.12 7.14
5 ft 7.26 7.24 7.23 7.11 7.12 7.12
10 ft 7.24 7.22 7.22 7.10 7.10 7.11
Specific Conductivity in µs/cm
1 ft 688 680 674 690 679 676
5 ft 693 678 677 677 676 676
10 ft 681 674 670 675 675 674
Dissolved Oxygen in mg/L
1 ft 1.96 .85 1.3 .4 .33 .28
5 ft 1.6 .67 .77 .3 .27 .24
10 ft 1.06 .51 .60 .28 .25 .23
Temperature in ⁰C
1 ft 25.6 25.6 25.6 25.9 26.0 25.8
5 ft 25.6 25.6 25.6 25.9 25.9 25.8
10 ft 25.5 25.6 25.6 25.8 25.8 25.8
Where,
Front is at the beginning of the basin where flow enters;
Middle is approximately in the middle of the basin;
End is at the other end of the basin where flow leaves
9.4 USEPA Sampling Methodology
SESD conducted the sampling activities following the Sample Analysis Plan (SAP) prepared for
the project. All USEPA sampling methods, measurements, and calibrations were conducted in
accordance with USEPA Region 4 SESD procedures listed in the SAP. Samples were analyzed
at the SESD laboratory in accordance with the Analytical Support Branch (ASB) Laboratory
Operations and Quality Assurance Manual. The ASB laboratory is accredited under the EPA
Region 4 ASB’s ISO/IEC 17025 accreditation issued by ANSI-ASQ National Accreditation
Board/ACLAS.
10.Effluent and Receiving Waters
The final effluent was clear; however, there were visible solids observed floating on top in the
chlorine contact chamber just before the effluent weir plate. (See photo # 9).
SESD ID: 18-0570 Final Report Page 16 of 58
11.References
•“Aerobic Biological Wastewater Treatment Facilities: Process Control Manual.” Office
of Water U.S.EPA III-A-524-77, March 1977.
•“Operation of Municipal Wastewater Treatment Plants, MOP 11,” Volume 2, 5th, 1996.
Water Environment Federation.
•“Operation of Wastewater Treatment Plants Vol 1 and 2”, 7th Edition, CSU, Sacramento,
2008.
•“Wastewater Engineering: Treatment and Reuse” 5th edition, Metcalf & Eddy, 2014.
SESD ID: 18-0570 Final Report Page 17 of 58
Appendix A: Facility Diagrams
SESD ID: 18-0570 Final Report Page 18 of 58
Figure 2 - Northview Mobile Home Park WWTP Treatment Unit Dimensions
Table 9 - Legend for Figure 2
Figure Label Treatment Unit Volume (ft3) Volume (gallons)
1 Digester 400 3,000
2 Old Aeration Basin 3,600 26,928
3 Polishing Clarifier 1,360 10,175
4 Old Cl Contact Chamber 300 2,244
5 Equalization Basin 2,228 16,667
6 Clarifier 1,810 13,539
7 New Aeration Basin 7,140 53,411
8 New Cl Contact (unused) 900 6,732
9 New Cl Contact 900 6,732
Front
End
Front
End
Middle Middle
Inner Diameter
Outer Diameter
SESD ID: 18-0570 Final Report Page 19 of 58
Appendix B: Photographic Log
SESD ID: 18-0570 Final Report Page 20 of 58
Photo Number (1)P7170004.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.414 W82;36;19.518
Orientation East
Description Influent waste stream, and manual bar screen.
SESD ID: 18-0570 Final Report Page 21 of 58

Photo Number (2) P7170005.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.372 W82;36;19.524
Orientation South
Description Influent waste stream splitter box. Floatable
solids passing through the screen and some
over the weirs into the aeration basins.

SESD ID: 18-0570 Final Report Page 22 of 58

Photo Number (3) P7170006.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.378 W82;36;19.506
Orientation Downward
Description Digester

SESD ID: 18-0570 Final Report Page 23 of 58

Photo Number (4) P7170007.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.3778 W82;36;19.506
Orientation West
Description Original package plant that now consists of a
digester, aeration basin, polishing clarifier,
and old contact chamber

SESD ID: 18-0570 Final Report Page 24 of 58

Photo Number (5) P7170008.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.312 W82;36;19.458
Orientation West
Description New aeration basin, while blowers are off

SESD ID: 18-0570 Final Report Page 25 of 58

Photo Number (6) P7170010.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.120 W82;36;19.866
Orientation East
Description Circular Clarifier with floating solids and grit.

SESD ID: 18-0570 Final Report Page 26 of 58

Photo Number (7) P7170011.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.096 W82;36;19.992
Orientation West
Description Circular clarifier weirs overflowing.

SESD ID: 18-0570 Final Report Page 27 of 58

Photo Number (8) P7170013.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.138 W82;36;20.004
Orientation West
Description Floating solids and grit in the old aeration
basin.

SESD ID: 18-0570 Final Report Page 28 of 58

Photo Number (9) P7170017.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.126 W82;36;20.334
Orientation West
Description New chlorine contact chamber. Floating
solids present.

SESD ID: 18-0570 Final Report Page 29 of 58

Photo Number (10) P7170021.jpg
Date Taken 7/17/2018
Author Chris McHugh
GPS Location N35;43;15.726 W82;36;20.088
Orientation East
Description New Chlorine contact chamber, effluent 90⁰
v-notch weir. Dye used to measure height of
water above weir

SESD ID: 18-0570 Final Report Page 30 of 58

Photo Number (11) P7170025.jpg
Date Taken 7/17/2018
Author Chris McHugh
GPS Location N35;43;15.294 W82;36;20.574
Orientation East
Description Sludge blanket measured in circular clarifier.
Sludge blanket depth was 8.5 ft.

SESD ID: 18-0570 Final Report Page 31 of 58

Photo Number (12) P7170030.jpg
Date Taken 7/17/2018
Author Chris McHugh
GPS Location N35;43;15.294 W82;36;20.574
Orientation North
Description Floatable solids over the weir plates on the
circular clarifier

SESD ID: 18-0570 Final Report Page 32 of 58

Photo Number (13) P7170032.jpg
Date Taken 7/17/2018
Author Cornell Gayle
GPS Location N35;43;15.372 W82;36;19.524
Orientation East
Description Influent waste stream splitter box. Floatable
solids passing through the screen and some
over the weirs into the aeration basins. View
of the autosampler setup at the influent
location.

SESD ID: 18-0570 Final Report Page 33 of 58

Photo Number (14) P7170048.jpg
Date Taken 7/18/2018
Author Cornell Gayle
GPS Location NA
Orientation NA
Description Filamentous microorganism presence in
NEW-ASB grab sample. Very little
microorganism activity observed.

SESD ID: 18-0570 Final Report Page 34 of 58

Photo Number (15) P7180076.jpg
Date Taken 7/18/2018
Author Cornell Gayle
GPS Location N35;43;15 W82;36;19
Orientation South
Description Digester right before being pumped.

SESD ID: 18-0570 Final Report Page 35 of 58
Appendix C: Operating Parameters Calculations &
Process Control Results
SESD ID: 18-0570 Final Report Page 36 of 58
USEPA calculated the operating parameters using the USEPA diagnostic evaluation sampling
results.
Based on the difficulties verifying flow, results will be calculated using the instantaneous flow
measured with surveying equipment.
Hydraulic Retention Time (HRT)
• 𝑉𝑉=𝑉𝑉𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴+𝑉𝑉𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴= .053411 𝑀𝑀𝑀𝑀+ .026828 𝑀𝑀𝑀𝑀=0.080239 𝑀𝑀𝑀𝑀
• 𝑄𝑄𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑁𝑁𝑖𝑖𝑖𝑖𝑖𝑖= 0.02543 𝑀𝑀𝑀𝑀𝑀𝑀
• 𝐻𝐻𝐻𝐻𝐻𝐻= 𝑉𝑉𝑄𝑄𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑁𝑁𝑖𝑖𝑖𝑖𝑖𝑖=0.0802390.02543 =3.16 𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑�
The recommended range is 1 to 5 days (CSU, 2008).

Sludge Volumetric Index (SVI)
• SS30Old =Old −ASB 30 minute Settlometer Test Sludge Volume = 870 mL/L
• TSSOld−ASB =4100 𝑚𝑚𝑚𝑚/𝐿𝐿

• SVIOld−ASB = SS30Old−ASB TSSOld−ASB�= 870mLL∗1000 mg/g4100 mg/L =212.2 mL/g

• SS30New =New −ASB 30 minute Settlometer Test Sludge Volume = 950 mL/L
• TSSNew−ASB =4700 𝑚𝑚𝑚𝑚/𝐿𝐿

• SVINEw−ASB = SS30New−ASB TSSNew−ASB�= 950mLL∗1000 mg/g4700 mg/L =202 mL/g
A value of 100 mL/g is considered a good settling sludge, although SVI values below 100 are
desired (Metcalf and Eddy, 2014).

SESD ID: 18-0570 Final Report Page 37 of 58
Food-to-Microorganism Ratio (F/M)
•𝑄𝑄𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑁𝑁𝑖𝑖𝑖𝑖𝑖𝑖= 0.02543 𝑀𝑀𝑀𝑀𝑀𝑀
•𝑉𝑉𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴= .053411 𝑀𝑀𝑀𝑀
•𝑋𝑋𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴=𝐻𝐻𝑉𝑉𝑇𝑇𝑇𝑇𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴=3800 mg/L
•𝑉𝑉𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴= .026828 𝑀𝑀𝑀𝑀
•𝑋𝑋𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴=𝐻𝐻𝑉𝑉𝑇𝑇𝑇𝑇𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴=3300 mg/L
•𝑇𝑇𝑖𝑖𝑎𝑎𝑎𝑎=𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝑑𝑑𝑚𝑚𝐴𝐴 𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐴𝐴𝐼𝐼𝐼𝐼 𝐵𝐵𝐵𝐵𝑀𝑀5 𝑐𝑐𝑐𝑐𝐼𝐼𝑐𝑐𝐴𝐴𝐼𝐼𝐼𝐼𝐴𝐴𝑑𝑑𝐼𝐼𝑐𝑐𝑐𝑐𝐼𝐼= 300+3302 =315 𝑚𝑚𝑚𝑚/𝐿𝐿 𝐹𝐹𝑀𝑀�=𝑄𝑄𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑖𝑁𝑁𝑖𝑖𝑖𝑖𝑖𝑖∗𝑇𝑇𝑖𝑖𝑎𝑎𝑎𝑎[(𝑉𝑉𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴∗ 𝑋𝑋𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴)+ (𝑉𝑉𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴∗ 𝑋𝑋𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴)]
= (0.02543 𝑀𝑀𝑀𝑀𝑀𝑀∗315 𝑚𝑚𝑚𝑚/𝐿𝐿)[(0.053411 𝑀𝑀𝑀𝑀∗3800 𝑚𝑚𝑚𝑚/𝐿𝐿)+ (0.026828 𝑀𝑀𝑀𝑀∗3300 𝑚𝑚𝑚𝑚/𝐿𝐿)
=
= 0.0275
Typical design parameters for extended aeration activated sludge plants range from 0.05 to 0.15
(WEF,1996).
Sludge Age
•Solids Inventory = [(𝑉𝑉𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴∗ 𝑋𝑋𝑁𝑁𝑁𝑁𝑁𝑁−𝐴𝐴𝐴𝐴𝐴𝐴)+ (𝑉𝑉𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴∗ 𝑋𝑋𝑂𝑂𝑂𝑂𝑂𝑂−𝐴𝐴𝐴𝐴𝐴𝐴)
•Sludge Age = 𝑇𝑇𝑐𝑐𝐼𝐼𝑐𝑐𝑑𝑑𝑑𝑑 𝐼𝐼𝐼𝐼𝐴𝐴𝐴𝐴𝐼𝐼𝐼𝐼𝑐𝑐𝐴𝐴𝑑𝑑𝐻𝐻𝑇𝑇𝑇𝑇𝑖𝑖𝑎𝑎𝑎𝑎𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝�
=
Sludge Age = 𝑇𝑇𝑐𝑐𝐼𝐼𝑐𝑐𝑑𝑑𝑑𝑑 𝐼𝐼𝐼𝐼𝐴𝐴𝐴𝐴𝐼𝐼𝐼𝐼𝑐𝑐𝐴𝐴𝑑𝑑𝐻𝐻𝑇𝑇𝑇𝑇𝑖𝑖𝑎𝑎𝑎𝑎𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝𝑝�
=[(0.053411 𝑀𝑀𝑀𝑀∗3800 𝑚𝑚𝑚𝑚/𝐿𝐿) + (0.026828 𝑀𝑀𝑀𝑀∗3300 𝑚𝑚𝑚𝑚/𝐿𝐿)]800 𝑚𝑚𝑚𝑚𝐿𝐿∗ 0.02543 𝑀𝑀𝑀𝑀𝑀𝑀
= 14.3 days
SESD ID: 18-0570 Final Report Page 38 of 58
Settlometer Test
The settlometer test was performed to observe the settling characteristics of the mixed liquor,
assess sludge quality, and approximate age. A settlometer test was conducted at the plant using
an undiluted 1,000 mL sample and a 50% diluted sample collected at both the New-ASB and
Old-ASB.
Table 10 – Old-ASB Settlometer Test Results
Time
(minutes)
Settled Sludge Volume
100% MLSS
(mL/L)
Settled Sludge Volume
50% MLSS
(mL/L)
0 1000 1000
5 950 770
10 940 670
15 930 600
20 910 540
25 880 490
30 870 450
Table 11 – New-ASB Settlometer Test Results
Time
(minutes)
Settled Sludge Volume
100% MLSS
(mL/L)
Settled Sludge Volume
50% MLSS
(mL/L)
0 1000 1000
30 950 500
60 890 450
The recommended range for the 30 min 100% MLSS SSV test is 300 – 500 mL/L. (CSU 2008).
The results from both basins indicate the sludge settled slowly.
SESD ID: 18-0570 Final Report Page 39 of 58
Appendix D: SESD Laboratory Analytical Results
19 Pages
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
August 23, 2018
MEMORANDUM
SUBJECT:
FROM:
FINAL Analytical Report
Project: 18-0570, North View Mobile Home WWTP CSI
Compliance Monitoring
4SESD-ASB
Jeffrey Hendel
ASB Inorganic Chemistry Section Chief
Analytical Support Branch
Danny France, ChiefTHRU:
TO:Christopher McHugh
Attached are the final results for the analytical groups listed below. These analyses were performed in
accordance with the Analytical Support Branch's (ASB) Laboratory Operations and Quality Assurance Manual
(ASB LOQAM) found at www.epa.gov/region4/sesd/asbsop. Any unique project data quality objectives
specified in writing by the data requestor have also been incorporated into the data unless otherwise noted in the
Report Narrative. Chemistry data have been verified based on the ASB LOQAM specifications and have been
qualified by this laboratory if the applicable quality control criteria were not met. Verification is defined in
Section 5.2 of the ASB LOQAM. For a listing of specific data qualifiers and explanations, please refer to the
Data Qualifier Definitions included in this report. The reported results are accurate within the limits of the
method(s) and are representative only of the samples as received by the laboratory.
Analyses Included in this report:Method Used:Accreditations:
Classical/Nutrient Analyses (CNA)
Ammonia as N ISOEPA 350.1 (Water)
Ammonia/TKN ISOEPA 351.2 (Water)
Classical/Nutrients ISOSM 2320B (Water)
Demand ISOSM 5210B (Water)
Nitrate and/or Nitrite ISOEPA 353.2 (Water)
Phosphorous ISOEPA 365.1 (Water)
Solids ISOSM 2540E (Water)
Solids ISOUSGS I-3765-85 (Water)
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 1 of 19
SESD 18-0570 Final Report Page 40 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Sample Disposal Policy
Due to limited space for long term sample storage, ASB’s policy is to dispose of samples on a periodic schedule.
Air samples collected in summa canisters will be disposed of 30 days following the issuance of this report. All
other sample media including original samples, sample extracts and or digestates will be disposed of, in
accordance with applicable regulations, 60 days from the date of this report.
This sample disposal policy does not apply to criminal samples which are held until the laboratory is notified by
the criminal investigators that case development and litigation are complete.
These samples may be held in the laboratory's custody for a longer period of time. If samples require storage
beyond the 60-day period, please contact the Sample Control Coordinator by e-mail at
[e-mail].
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 2 of 19
SESD 18-0570 Final Report Page 41 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Date ReceivedDate CollectedMatrixLaboratory IDSample ID
SAMPLES INCLUDED IN THIS REPORT
Project: 18-0570, North View Mobile Home WWTP CSI
EFF001 E182912-01 Municipal Eff. Wastewater 7/17/18 10:25 7/19/18 7:10
EFF002 E182912-02 Municipal Eff. Wastewater 7/18/18 11:17 7/19/18 7:10
EFF003 E182912-03 Municipal Eff. Wastewater 7/18/18 11:30 7/19/18 7:10
INF001 E182912-04 Municipal Inf. Wastewater 7/17/18 11:10 7/19/18 7:10
INF002 E182912-05 Municipal Inf. Wastewater 7/18/18 11:00 7/19/18 7:10
NEW-ASB E182912-06 Municipal Proc. Wastewater 7/17/18 15:00 7/19/18 7:10
OLD-ASB E182912-07 Municipal Proc. Wastewater 7/17/18 15:00 7/19/18 7:10
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 3 of 19
SESD 18-0570 Final Report Page 42 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
DATA QUALIFIER DEFINITIONS
U The analyte was not detected at or above the reporting limit.
J The identification of the analyte is acceptable; the reported value is an estimate.
K The identification of the analyte is acceptable; the reported value may be biased high. The actual value is expected
to be less than the reported value.
L The identification of the analyte is acceptable; the reported value may be biased low. The actual value is expected
to be greater than the reported value.
ACRONYMS AND ABBREVIATIONS
CAS Chemical Abstracts Service
Note: Analytes with no known CAS identifiers have been assigned codes beginning with "E", the EPA ID as assigned by
the EPA Substance Registry System (www.epa.gov/srs), or beginning with "R4-", a unique identifier assigned by the EPA
Region 4 laboratory.
MDL Method Detection Limit - The minimum concentration of a substance (an analyte) that can be measured and
reported with a 99% confidence that the analyte concentration is greater than zero.
MRL Minimum Reporting Limit - Analyte concentration that corresponds to the lowest demonstrated level of acceptable
quantitation. The MRL is sample-specific and accounts for preparation weights and volumes, dilutions, and
moisture content of soil/sediments.
TIC Tentatively Identified Compound - An analyte identified based on a match with the instrument software's mass
spectral library. A calibration standard has not been analyzed to confirm the compound's identification or the
estimated concentration reported.
ACCREDITATIONS:
ISO ASB is accredited by ISO/IEC 17025, including an amplification for forensic accreditation through ANSI-ASQ
National Accreditation Board.
Refer to the certificate and scope of accreditation AT-1644 at:
http://www.epa.gov/aboutepa/about-region-4s-science-and-ecosystem-support-division-sesd
NR The EPA Region 4 Laboratory has not requested accreditation for this test.
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 4 of 19
SESD 18-0570 Final Report Page 43 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: EFF001 E182912-01
Matrix:Municipal Eff. Wastewater
Date Collected:7/17/18 10:25
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:EFF001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
0.050Ammonia as N mg/L EPA 350.10.907664-41-7 8/14/18
16:09
8/13/1810:13
0.50Total Kjeldahl Nitrogen mg/L EPA 351.24.7E17148461 8/08/1818:16
8/01/1811:14
1.0Alkalinity, Total (as CaCO3)mg/L SM 2320B160E16401927/24/18
11:25
7/24/1811:25
2.0BOD, 5 Day mg/L SM 5210B4.0 J, KE1640606 7/24/18
14:48
7/19/1810:22
0.050Nitrate/Nitrite as N mg/L EPA 353.20.078E701177 7/26/18
15:40
7/26/1815:13
0.050Total Phosphorus mg/L EPA 365.11.57723-14-0 8/07/1814:11
8/02/1810:28
5.0Total Suspended Solids mg/L USGS I-3765-855.2E1642818 7/24/18
21:15
7/23/1821:08
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 5 of 19
SESD 18-0570 Final Report Page 44 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: EFF002 E182912-02
Matrix:Municipal Eff. Wastewater
Date Collected:7/18/18 11:17
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:EFF001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
0.050Ammonia as N mg/L EPA 350.10.0987664-41-7 8/14/18
16:09
8/13/1810:13
0.50Total Kjeldahl Nitrogen mg/L EPA 351.23.7E17148461 8/08/1818:16
8/01/1811:14
1.0Alkalinity, Total (as CaCO3)mg/L SM 2320B150E16401927/24/18
11:35
7/24/1811:35
2.0BOD, 5 Day mg/L SM 5210B4.0 J, KE1640606 7/24/18
14:48
7/19/1811:28
0.050Nitrate/Nitrite as N mg/L EPA 353.20.050 UE701177 7/26/18
15:40
7/26/1815:13
0.050Total Phosphorus mg/L EPA 365.11.47723-14-0 8/07/1814:11
8/02/1810:28
5.0Total Suspended Solids mg/L USGS I-3765-855.0 UE1642818 7/24/18
21:15
7/23/1821:08
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 6 of 19
SESD 18-0570 Final Report Page 45 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: EFF003 E182912-03
Matrix:Municipal Eff. Wastewater
Date Collected:7/18/18 11:30
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:EFF001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
0.050Ammonia as N mg/L EPA 350.10.127664-41-7 8/14/18
16:09
8/13/1810:13
0.50Total Kjeldahl Nitrogen mg/L EPA 351.23.8E17148461 8/08/1818:16
8/01/1811:14
1.0Alkalinity, Total (as CaCO3)mg/L SM 2320B160E16401927/24/18
11:55
7/24/1811:55
2.0BOD, 5 Day mg/L SM 5210B4.0 J, KE1640606 7/24/18
14:48
7/19/1811:28
0.050Nitrate/Nitrite as N mg/L EPA 353.20.050 UE701177 7/26/18
15:40
7/26/1815:13
0.050Total Phosphorus mg/L EPA 365.11.27723-14-0 8/07/1814:11
8/02/1810:28
5.0Total Suspended Solids mg/L USGS I-3765-855.0 UE1642818 7/24/18
21:15
7/23/1821:08
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 7 of 19
SESD 18-0570 Final Report Page 46 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: INF001 E182912-04
Matrix:Municipal Inf. Wastewater
Date Collected:7/17/18 11:10
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:INF001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
1.2Ammonia as N mg/L EPA 350.1547664-41-7 8/14/18
16:09
8/13/1810:13
2.5Total Kjeldahl Nitrogen mg/L EPA 351.288E171484618/08/1818:16
8/01/1811:14
1.0Alkalinity, Total (as CaCO3)mg/L SM 2320B370E16401927/24/18
12:05
7/24/1812:05
2.0BOD, 5 Day mg/L SM 5210B330J, LE1640606 7/24/18
14:48
7/19/1810:45
0.050Nitrate/Nitrite as N mg/L EPA 353.20.077E701177 7/26/18
15:40
7/26/1815:13
0.25Total Phosphorus mg/L EPA 365.1147723-14-0 8/06/1816:27
8/02/1810:28
5.0Total Suspended Solids mg/L USGS I-3765-85780E16428187/24/18
21:15
7/23/1821:08
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 8 of 19
SESD 18-0570 Final Report Page 47 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: INF002 E182912-05
Matrix:Municipal Inf. Wastewater
Date Collected:7/18/18 11:00
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:INF001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
1.2Ammonia as N mg/L EPA 350.1487664-41-7 8/14/18
16:09
8/13/1810:13
2.5Total Kjeldahl Nitrogen mg/L EPA 351.278E171484618/08/1818:16
8/01/1811:14
1.0Alkalinity, Total (as CaCO3)mg/L SM 2320B330E16401927/24/18
12:11
7/24/1812:11
2.0BOD, 5 Day mg/L SM 5210B300J, LE1640606 7/24/18
14:48
7/19/1811:28
0.050Nitrate/Nitrite as N mg/L EPA 353.20.078E701177 7/26/18
15:40
7/26/1815:13
0.25Total Phosphorus mg/L EPA 365.1127723-14-0 8/06/1816:27
8/02/1810:28
5.0Total Suspended Solids mg/L USGS I-3765-85820E16428187/24/18
21:15
7/23/1821:08
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 9 of 19
SESD 18-0570 Final Report Page 48 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: NEW-ASB E182912-06
Matrix:Municipal Proc. Wastewater
Date Collected:7/17/18 15:00
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:PC001
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
5.0Total Suspended Solids mg/L USGS I-3765-854700E16428187/24/18
21:15
7/23/1821:08
5.0Volatile Suspended Solids mg/L SM 2540E3800E16403747/24/18
21:18
7/23/1821:13
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 10 of 19
SESD 18-0570 Final Report Page 49 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Classical/Nutrient Analyses
Sample ID:Lab ID: OLD-ASB E182912-07
Matrix:Municipal Proc. Wastewater
Date Collected:7/17/18 15:00
Project: 18-0570, North View Mobile Home WWTP CSI
Station ID:PC002
CAS
Number Analyte Results Qualifiers Units MRL Prepared Analyzed Method
5.0Total Suspended Solids mg/L USGS I-3765-854100E16428187/24/18
21:15
7/23/1821:08
5.0Volatile Suspended Solids mg/L SM 2540E3300E16403747/24/18
21:18
7/23/1821:13
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 11 of 19
SESD 18-0570 Final Report Page 50 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1807102 - C SM5210 BOD
Blank (1807102-BLK1)Prepared: 07/19/18 Analyzed: 07/24/18
SM 5210B
BOD, 5 Day mg/LU2.0 U
LCS (1807102-BS1)Prepared: 07/19/18 Analyzed: 07/24/18
SM 5210B
BOD, 5 Day mg/L238.50 2.0 198.00 QL-284.6-115.4120
LCS Dup (1807102-BSD1)Prepared: 07/19/18 Analyzed: 07/24/18
SM 5210B
BOD, 5 Day mg/L213.00 2.0 198.00 1584.6-115.4108 11.3
Batch 1807116 - C 2540 Solids
Blank (1807116-BLK1)Prepared: 07/23/18 Analyzed: 07/24/18
USGS I-3765-85
Total Suspended Solids mg/LU5.0 U
LCS (1807116-BS1)Prepared: 07/23/18 Analyzed: 07/24/18
USGS I-3765-85
Total Suspended Solids mg/L87.200 5.0 95.100 77.1-11091.7
LCS Dup (1807116-BSD1)Prepared: 07/23/18 Analyzed: 07/24/18
USGS I-3765-85
Total Suspended Solids mg/L88.000 5.0 95.100 1077.1-11092.5 0.913
Duplicate (1807116-DUP1)Prepared: 07/23/18 Analyzed: 07/24/18 Source: E182912-01
USGS I-3765-85
Total Suspended Solids mg/L5.0000 5.0 5.2000 103.92
MRL Verification (1807116-PS1)Prepared: 07/23/18 Analyzed: 07/24/18
USGS I-3765-85
Total Suspended Solids mg/L6.1000 5.0 9.5100 MRL-257.1-13064.1
Batch 1807117 - C 2540 Solids
Blank (1807117-BLK1)Prepared: 07/23/18 Analyzed: 07/24/18
SM 2540E
Volatile Suspended Solids mg/LU5.0 B-3, U
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 12 of 19
SESD 18-0570 Final Report Page 51 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1807117 - C 2540 Solids
Blank (1807117-BLK1)Prepared: 07/23/18 Analyzed: 07/24/18
LCS (1807117-BS1)Prepared: 07/23/18 Analyzed: 07/24/18
SM 2540E
Volatile Suspended Solids mg/L32.900 5.0 30.400 84.9-115108
LCS Dup (1807117-BSD1)Prepared: 07/23/18 Analyzed: 07/24/18
SM 2540E
Volatile Suspended Solids mg/L32.600 5.0 30.400 20084.9-115107 0.916
MRL Verification (1807117-PS1)Prepared: 07/23/18 Analyzed: 07/24/18
SM 2540E
Volatile Suspended Solids mg/L5.7000 5.0 6.0800 MRL-270-13093.8
Batch 1807119 - C 2320B Alkalinity
Blank (1807119-BLK1)Prepared & Analyzed: 07/24/18
SM 2320B
Alkalinity, Total (as CaCO3)mg/LU1.0 U
LCS (1807119-BS1)Prepared & Analyzed: 07/24/18
SM 2320B
Alkalinity, Total (as CaCO3)mg/L52.022 1.0 50.000 92-115104
LCS Dup (1807119-BSD1)Prepared & Analyzed: 07/24/18
SM 2320B
Alkalinity, Total (as CaCO3)mg/L51.926 1.0 50.000 1092-115104 0.185
Duplicate (1807119-DUP1)Prepared & Analyzed: 07/24/18 Source: E182912-02
SM 2320B
Alkalinity, Total (as CaCO3)mg/L155.90 1.0 154.75 100.735
Duplicate (1807119-DUP2)Prepared & Analyzed: 07/24/18 Source: E183001-02
SM 2320B
Alkalinity, Total (as CaCO3)mg/L71.710 1.0 72.338 100.872
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 13 of 19
SESD 18-0570 Final Report Page 52 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1807119 - C 2320B Alkalinity
MRL Verification (1807119-PS1)Prepared & Analyzed: 07/24/18
SM 2320B
Alkalinity, Total (as CaCO3)mg/L1.0820 1.0 1.0000 MRL-272-135108
Batch 1807137 - C 353.2 NO3-NO2
Blank (1807137-BLK1)Prepared & Analyzed: 07/26/18
EPA 353.2
Nitrate/Nitrite as N mg/LU0.050 U
LCS (1807137-BS1)Prepared & Analyzed: 07/26/18
EPA 353.2
Nitrate/Nitrite as N mg/L0.48390 0.050 0.50050 90-11096.7
Matrix Spike (1807137-MS1)Prepared & Analyzed: 07/26/18 Source: E182901-07
EPA 353.2
Nitrate/Nitrite as N mg/L0.81180 0.050 0.50050 0.31000 90-110100
Matrix Spike (1807137-MS2)Prepared & Analyzed: 07/26/18 Source: E182912-03
EPA 353.2
Nitrate/Nitrite as N mg/L0.53370 0.050 0.50050 0.049100 90-11096.8
Matrix Spike Dup (1807137-MSD1)Prepared & Analyzed: 07/26/18 Source: E182901-07
EPA 353.2
Nitrate/Nitrite as N mg/L0.81620 0.050 0.50050 0.31000 1090-110101 0.541
Matrix Spike Dup (1807137-MSD2)Prepared & Analyzed: 07/26/18 Source: E182912-03
EPA 353.2
Nitrate/Nitrite as N mg/L0.53730 0.050 0.50050 0.049100 1090-11097.5 0.672
MRL Verification (1807137-PS1)Prepared & Analyzed: 07/26/18
EPA 353.2
Nitrate/Nitrite as N mg/L0.051800 0.050 0.050000 MRL-270-130104
Batch 1808002 - C 351.2 TKN
Blank (1808002-BLK1)Prepared: 08/01/18 Analyzed: 08/06/18
EPA 351.2
Total Kjeldahl Nitrogen mg/LU0.050 U
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 14 of 19
SESD 18-0570 Final Report Page 53 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1808002 - C 351.2 TKN
Blank (1808002-BLK1)Prepared: 08/01/18 Analyzed: 08/06/18
Blank (1808002-BLK2)Prepared: 08/01/18 Analyzed: 08/08/18
EPA 351.2
Total Kjeldahl Nitrogen mg/LU0.050 U
LCS (1808002-BS1)Prepared: 08/01/18 Analyzed: 08/06/18
EPA 351.2
Total Kjeldahl Nitrogen mg/L1.1440 0.050 1.1650 90-11098.2
LCS (1808002-BS2)Prepared: 08/01/18 Analyzed: 08/08/18
EPA 351.2
Total Kjeldahl Nitrogen mg/L1.1620 0.050 1.1650 90-11099.7
Matrix Spike (1808002-MS1)Prepared: 08/01/18 Analyzed: 08/06/18 Source: E182901-06
EPA 351.2
Total Kjeldahl Nitrogen mg/L1.9360 0.050 0.99900 0.97400 90-11096.3
Matrix Spike (1808002-MS2)Prepared: 08/01/18 Analyzed: 08/08/18 Source: E182912-02
EPA 351.2
Total Kjeldahl Nitrogen mg/L4.6000 0.50 0.99900 3.7000 XM-190-11090.1
Matrix Spike Dup (1808002-MSD1)Prepared: 08/01/18 Analyzed: 08/06/18 Source: E182901-06
EPA 351.2
Total Kjeldahl Nitrogen mg/L1.9590 0.050 0.99900 0.97400 2090-11098.6 1.18
Matrix Spike Dup (1808002-MSD2)Prepared: 08/01/18 Analyzed: 08/08/18 Source: E182912-02
EPA 351.2
Total Kjeldahl Nitrogen mg/L4.5900 0.50 0.99900 3.7000 20 XM-190-11089.1 0.218
MRL Verification (1808002-PS1)Prepared: 08/01/18 Analyzed: 08/06/18
EPA 351.2
Total Kjeldahl Nitrogen mg/L0.072000 0.050 0.050000 MRL-2,
QR-2
70-130144
MRL Verification (1808002-PS2)Prepared: 08/01/18 Analyzed: 08/08/18
EPA 351.2
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 15 of 19
SESD 18-0570 Final Report Page 54 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1808002 - C 351.2 TKN
MRL Verification (1808002-PS2)Prepared: 08/01/18 Analyzed: 08/08/18
Total Kjeldahl Nitrogen mg/L0.085000 0.050 0.050000 MRL-2,
QR-2
70-130170
Batch 1808007 - C 365.1 TPhos
Blank (1808007-BLK1)Prepared: 08/02/18 Analyzed: 08/06/18
EPA 365.1
Total Phosphorus mg/LU0.010 U
Blank (1808007-BLK2)Prepared: 08/02/18 Analyzed: 08/07/18
EPA 365.1
Total Phosphorus mg/LU0.010 U
LCS (1808007-BS1)Prepared: 08/02/18 Analyzed: 08/06/18
EPA 365.1
Total Phosphorus mg/L0.37860 0.010 0.36750 90-110103
LCS (1808007-BS2)Prepared: 08/02/18 Analyzed: 08/07/18
EPA 365.1
Total Phosphorus mg/L0.37590 0.010 0.36750 90-110102
Matrix Spike (1808007-MS1)Prepared: 08/02/18 Analyzed: 08/06/18 Source: E182901-05
EPA 365.1
Total Phosphorus mg/L0.71620 0.010 0.50100 0.21820 90-11099.4
Matrix Spike (1808007-MS2)Prepared: 08/02/18 Analyzed: 08/07/18 Source: E182912-01
EPA 365.1
Total Phosphorus mg/L1.9625 0.050 0.50100 1.4685 90-11098.6
Matrix Spike (1808007-MS3)Prepared: 08/02/18 Analyzed: 08/06/18 Source: E183001-05
EPA 365.1
Total Phosphorus mg/L3.8880 0.10 0.50100 3.4160 90-11094.2
Matrix Spike Dup (1808007-MSD1)Prepared: 08/02/18 Analyzed: 08/06/18 Source: E182901-05
EPA 365.1
Total Phosphorus mg/L0.71560 0.010 0.50100 0.21820 1090-11099.3 0.0838
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 16 of 19
SESD 18-0570 Final Report Page 55 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1808007 - C 365.1 TPhos
Matrix Spike Dup (1808007-MSD2)Prepared: 08/02/18 Analyzed: 08/07/18 Source: E182912-01
EPA 365.1
Total Phosphorus mg/L1.9675 0.050 0.50100 1.4685 1090-11099.6 0.254
Matrix Spike Dup (1808007-MSD3)Prepared: 08/02/18 Analyzed: 08/06/18 Source: E183001-05
EPA 365.1
Total Phosphorus mg/L3.8680 0.10 0.50100 3.4160 1090-11090.2 0.516
MRL Verification (1808007-PS1)Prepared: 08/02/18 Analyzed: 08/06/18
EPA 365.1
Total Phosphorus mg/L0.013000 0.010 0.010000 MRL-270-130130
MRL Verification (1808007-PS2)Prepared: 08/02/18 Analyzed: 08/07/18
EPA 365.1
Total Phosphorus mg/L0.0086000 0.010 0.010000 MRL-2,
U
70-13086.0
Batch 1808049 - C 350.1 Ammonia
Blank (1808049-BLK1)Prepared: 08/13/18 Analyzed: 08/14/18
EPA 350.1
Ammonia as N mg/LU0.050 U
LCS (1808049-BS1)Prepared: 08/13/18 Analyzed: 08/14/18
EPA 350.1
Ammonia as N mg/L0.98100 0.050 0.99900 90-11098.2
Matrix Spike (1808049-MS1)Prepared: 08/13/18 Analyzed: 08/14/18 Source: E182912-03
EPA 350.1
Ammonia as N mg/L1.0980 0.050 0.99900 0.12500 90-11097.4
Matrix Spike (1808049-MS2)Prepared: 08/13/18 Analyzed: 08/14/18 Source: E183001-04
EPA 350.1
Ammonia as N mg/L17.570 0.50 0.99900 17.030 XM-190-11054.1
Matrix Spike Dup (1808049-MSD1)Prepared: 08/13/18 Analyzed: 08/14/18 Source: E182912-03
EPA 350.1
Ammonia as N mg/L1.0980 0.050 0.99900 0.12500 1090-11097.4 0.00
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 17 of 19
SESD 18-0570 Final Report Page 56 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Notes Analyte
Classical/Nutrient Analyses (CNA) - Quality Control
US-EPA, Region 4, SESD
Batch 1808049 - C 350.1 Ammonia
Matrix Spike Dup (1808049-MSD2)Prepared: 08/13/18 Analyzed: 08/14/18 Source: E183001-04
EPA 350.1
Ammonia as N mg/L17.790 0.50 0.99900 17.030 10 XM-190-11076.1 1.24
MRL Verification (1808049-PS1)Prepared: 08/13/18 Analyzed: 08/14/18
EPA 350.1
Ammonia as N mg/L0.054000 0.050 0.050000 MRL-270-130108
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 18 of 19
SESD 18-0570 Final Report Page 57 of 58
D.A.R.T. Id: 18-0570
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 4 Science and Ecosystem Support Division
980 College Station Road, Athens, Georgia 30605-2700
Project: 18-0570, North View Mobile Home WWTP CSI - Reported by Jeffrey Hendel
Notes and Definitions for QC Samples
U The analyte was not detected at or above the reporting limit.
B-3 Level in blank does not impact data quality
MRL-2 MRL verification for Non-Potable Water matrix
QL-2 Laboratory Control Spike Recovery greater than method control limits
QR-2 MRL verification recovery greater than upper control limits.
XM-1 Sample background/spike ratio higher than method evaluation criteria
8/23/18 7:00E182912 CNA FINAL 08 23 18 0700Page 19 of 19
End of Report
SESD 18-0570 Final Report Page 58 of 58