NC0070289_Monitoring (Report)_20231221

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
December 21, 2023
CERTIFIED MAIL 7018 3090 00012322 5696
RETURN RECEIPT REQUSETED
Jennifer Eggerichs
Stone's Throw Homeowners Association
PO Box 690725
Charlotte, NC 28227-7013
SUBJECT: NPDES Statutory Moratorium
Permit No. NCO070289
Ridgewood Farms at Stones Throw WWTP
Cabarrus County
Ms. Eggerichs:
The North Carolina Division of Water Resources [hereby known as the Division] has determined
that the Ridgewood Farms at Stones Throw Wastewater Treatment Plant (WWTP) is unable to
consistently and adequately treat wastewater the facility is receiving. This determination is
based upon (1) an analysis of data provided by your firm on monthly self -monitoring reports;
(2) the results of on -site inspections of the WWTP; (3) failure to comply with NPDES Permit
condition A. (3.) Engineering Assessment [NCGS 143-215.1 (b)] to evaluate the structural
integrity and operational efficiency of subject wastewater treatment facility.
A review of self -monitoring data submitted to the Division indicates a trend and frequency of
effluent limit violations (ref.: Attached MR). Based on this data there are issues associated with
the existing treatment facility and its ability to consistently treat wastewater as required by
NPDES permit NC0070289.
[See Attached Monitoring Report (MR) Violations for November 2018 through October
2023.]
The last three (3) inspections of the subject WWTP have shown the facility noncompliant with
permit NC0070289. During the most recent inspection on October 24, 2023, Division personnel
discovered unsafe conditions at the WWTP from two large trees that have been girdled and left
standing dead next to the treatment plant. Trees pose a danger of falling and damaging
treatment plant and/or injuring treatment plant operators. Special NPDES permit condition in
Part I, A. (3) requires a North Carolina Licensed Professional Engineer to evaluate the structural
integrity and operational efficiency of the WWTP. This requirement has not been accomplished
D E Q ,fJ North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA (J1(�.'�O'�.(�OQO
Department of Emlmnmenfal Duali�

during the last permit cycle from effective date April 1, 2020, through expiration on November
30, 2023. The permit had a completion date to perform the Engineer Evaluation of October 31,
2020.
North Carolina General Statute 145-215.67 (a) states, in part that "no person subject to the
provision of NCGS 143-215.1, shall cause or allow the discharge of any wastes to a waste -
disposal system in excess of the capacity of the disposal system or of any waste which the
waste -disposal system cannot adequately treat." Should these terms be violated, NCGS 143-
215.67 states a moratorium can be imposed "on the addition of waste to a treatment works" if
the treatment works is not capable of adequately treating additional waste.
Based upon the facts and determination noted above, the Ridgewood Farms at Stones Throw
WWTP is hereby placed on a moratorium prohibiting the introduction of any additional
wastewater to the collection system tributary to the WWTP. This is to be interpreted as to
prohibit the issuance of permits for new sewer lines to be connected to the WWTP, any new
tap -on to the existing collection system, and/or the introduction of significant volumes of new
wastewater flow via existing taps (subject to the provisions of the statute). This moratorium
shall become effective 45 days from your receipt of this letter.
This moratorium will remain in effect until Ridgewood Farms at Stones Throw WWTP is
consistently compliant with permit NCO070289 and has obtained written notification from the
Division lifting this moratorium.
Correspondence pertaining to this moratorium should be sent to the Division at the address
listed at the bottom of the page of this letter. If you should have any questions, please do not
hesitate to contact me at the Regional Operations Section in the Mooresville Regional Office at
704-663-1699 or at andrew.pitner(a)deq.nc.gov.
Sincerely,
DocuSigned by:
4. N Nu"
F1611`1369A21D84A3...
Andrew H. Pitner, Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources, NCDEQ
ATTACHMENT
Cc: Jacob Snyder, Cabarrus County Environmental Health, email:
[e-mail]
Matt Love, Cabarrus County Building Inspections, email: [e-mail]
Laserfiche
NPDES Compliance/Enforcement Unit - Enforcement Fille
D E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
Depanmem of Envlmnmenml Dual

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
12/15/22 Page
1 of 4
Permit:
NCO070289
MRS Betweei 11 - 2018 and10 - 2023
Region:
%
Violation Category:%
Program Category: NPDES
WW
Facility Name: %
Param Nam(%
County:
%
Subbasin: %
Violation Action: %
Major Minor:
%
PERMIT: NCO070289
FACILITY: Stones Throw Homeowners Association -Ridgewood
COUNTY: Cabarrus
REGION: Mooresville
Farms at Stones Throw WWTP
Limit Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED
%
REPORT
OUTFALL
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
05-2020
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/06/20
Weekly
mg/I
27
47
74.1
Daily Maximum
Proceed to NOV
Concentration
Exceeded
06-2020
001
Effluent
BOD, 5-Day (20 Deg. C) -
06/29/20
Weekly
mg/I
27
30
11.1
Daily Maximum
Proceed to
Concentration
Exceeded
Enforcement Case
06 - 2020
001
Effluent
BOD, 5-Day (20 Deg. C) -
06/30/20
Weekly
mg/I
18
18.2
1.1
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
07-2020
001
Effluent
BOD, 5-Day (20 Deg. C) -
07/23/20
Weekly
mg/I
27
32
18.5
Daily Maximum
Proceed to
Concentration
Exceeded
Enforcement Case
07 - 2020
001
Effluent
BOD, 5-Day (20 Deg. C) -
07/31/20
Weekly
mg/I
18
23.25
29.2
Monthly Average
Proceed to
Concentration
Exceeded
Enforcement Case
08-2021
001
Effluent
BOD, 5-Day (20 Deg. C) -
08/30/21
Weekly
mg/I
27
43
59.3
Daily Maximum
Proceed to NOV
Concentration
Exceeded
05-2022
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/31/22
Weekly
mg/I
27
31
14.8
Daily Maximum
Proceed to NOV
Concentration
Exceeded
05 - 2022
001
Effluent
BOD, 5-Day (20 Deg. C) -
05/31 /22
Weekly
mg/I
18
19.36
7.6
Monthly Average
Proceed to NOV
Concentration
Exceeded
05-2019
001
Effluent
Chlorine, Total Residual
05/21/19
2 Xweek
ug/I
28
48
71.4
Daily Maximum
No Action, BPJ
Exceeded
05-2019
001
Effluent
Chlorine, Total Residual
05/23/19
2 X week
ug/I
28
31
10.7
Daily Maximum
No Action, BPJ
Exceeded
10-2019
001
Effluent
Chlorine, Total Residual
10/01/19
2 Xweek
ug/I
28
40
42.9
Daily Maximum
No Action, BPJ
Exceeded
07-2023
001
Effluent
Chlorine, Total Residual
07/26/23
2 X week
ug/I
28
30
7.1
Daily Maximum
No Action, BPJ
Exceeded
11 -2018
001
Effluent
Coliform, Fecal MF, MFC
11/07/18
Weekly
#/100ml
400
820
105.0
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
05-2019
001
Effluent
Coliform, Fecal MF, MFC
05/07/19
Weekly
#/100ml
400
725
81.3
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
07-2019
001
Effluent
Coliform, Fecal MF, MFC
07/02/19
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
12/15/2� Page
2 of 4
Permit:
NCO070289
MRS Betweei 11 - 2018 and10 - 2023
Region:
%
Violation Category:%
Program Category: NPDES
WW
Facility Name: %
Param Nam(%
County:
%
Subbasin: %
Violation Action: %
Major Minor:
%
PERMIT: NCO070289
FACILITY: Stones Throw Homeowners Association -Ridgewood
COUNTY: Cabarrus
REGION: Mooresville
Farms at Stones Throw WWTP
Limit Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED
%
REPORT
OUTFALL
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
05-2020
001
Effluent
Coliform, Fecal MF, MFC
05/21/20
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
06-2020
001
Effluent
Coliform, Fecal MF, MFC
06/29/20
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to
Broth, 44.5 C
Exceeded
Enforcement Case
03-2021
001
Effluent
Coliform, Fecal MF, MFC
03/16/21
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
05-2022
001
Effluent
Coliform, Fecal MF, MFC
05/31/22
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
05-2023
001
Effluent
Coliform, Fecal MF, MFC
05/16/23
Weekly
#/100ml
400
600
50
Daily Maximum
Proceed to NOV
Broth, 44.5 C
Exceeded
05-2020
001
Effluent
Flow, in conduit orthru
05/31/20
Continuous
mgd
0.05
0.082
63.8
Monthly Average
Proceed to NOV
treatment plant
Exceeded
06-2020
001
Effluent
Nitrogen, Ammonia Total (as
06/11/20
Weekly
mg/I
25
28
12
Daily Maximum
Proceed to
N) - Concentration
Exceeded
Enforcement Case
06-2020
001
Effluent
Nitrogen, Ammonia Total (as
06/25/20
Weekly
mg/I
25
33
32
Daily Maximum
Proceed to
N) - Concentration
Exceeded
Enforcement Case
06-2020
001
Effluent
Nitrogen, Ammonia Total (as
06/29/20
Weekly
mg/I
25
28
12
Daily Maximum
Proceed to
N) - Concentration
Exceeded
Enforcement Case
06 -2020
001
Effluent
Nitrogen, Ammonia Total (as
06/30/20
Weekly
mg/I
5
23.62
372.4
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
07-2020
001
Effluent
Nitrogen, Ammonia Total (as
07/31/20
Weekly
mg/I
5
13.4
168
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
04 -2021
001
Effluent
Nitrogen, Ammonia Total (as
04/30/21
Weekly
mg/I
5
7.9
58
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
05-2021
001
Effluent
Nitrogen, Ammonia Total (as
05/18/21
Weekly
mg/I
25
26
4
Daily Maximum
Proceed to
N) - Concentration
Exceeded
Enforcement Case
05-2021
001
Effluent
Nitrogen, Ammonia Total (as
05/31/21
Weekly
mg/I
5
21.5
330
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
08-2021
001
Effluent
Nitrogen, Ammonia Total (as
08/31/21
Weekly
mg/I
5
7.27
45.4
Monthly Average
Proceed to NOV
N) - Concentration
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date:
12/15/2� Page
3 of 4
Permit:
NCO070289
MRS Betweei 11 - 2018 and10 - 2023
Region:
%
Violation Category:%
Program Category: NPDES
WW
Facility Name: %
Param Nam(%
County:
%
Subbasin: %
Violation Action: %
Major Minor:
%
PERMIT: NCO070289
FACILITY: Stones Throw Homeowners Association -Ridgewood
COUNTY: Cabarrus
REGION: Mooresville
Farms at Stones Throw WWTP
Limit Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED
%
REPORT
OUTFALL
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE
Over
VIOLATION TYPE
VIOLATION ACTION
12-2021
001
Effluent
Nitrogen, Ammonia Total (as
12/31/21
Weekly
mg/I
12
22.2
85
Monthly Average
Proceed to
N) - Concentration
Exceeded
Enforcement Case
06 -2022
001
Effluent
Nitrogen, Ammonia Total (as
06/30/22
Weekly
mg/I
5
9.49
89.8
Monthly Average
Proceed to NOV
N) - Concentration
Exceeded
04 -2023
001
Effluent
Nitrogen, Ammonia Total (as
04/30/23
Weekly
mg/I
5
12.55
151.0
Monthly Average
Proceed to NOV
N) - Concentration
Exceeded
05-2023
001
Effluent
Nitrogen, Ammonia Total (as
05/16/23
Weekly
mg/I
25
29
16.0
Daily Maximum
Proceed to NOV
N) - Concentration
Exceeded
05-2023
001
Effluent
Nitrogen, Ammonia Total (as
05/31/23
Weekly
mg/I
5
19.82
296.4
Monthly Average
Proceed to NOV
N) - Concentration
Exceeded
08-2020
001
Effluent
Solids, Total Suspended -
08/06/20
Weekly
mg/I
45
56
24.4
Daily Maximum
Proceed to NOV
Concentration
Exceeded
08-2020
001
Effluent
Solids, Total Suspended -
08/31/20
Weekly
mg/I
30
30.88
2.9
Monthly Average
Proceed to NOV
Concentration
Exceeded
10-2020
001
Effluent
Solids, Total Suspended -
10/06/20
Weekly
mg/I
45
56
24.4
Daily Maximum
Proceed to NOV
Concentration
Exceeded
10-2020
001
Effluent
Solids, Total Suspended -
10/20/20
Weekly
mg/I
45
84
86.7
Daily Maximum
Proceed to NOV
Concentration
Exceeded
10-2020
001
Effluent
Solids, Total Suspended -
10/27/20
Weekly
mg/I
45
50
11.1
Daily Maximum
Proceed to NOV
Concentration
Exceeded
10-2020
001
Effluent
Solids, Total Suspended -
10/31/20
Weekly
mg/I
30
49.52
65.1
Monthly Average
Proceed to NOV
Concentration
Exceeded
08-2021
001
Effluent
Solids, Total Suspended -
08/30/21
Weekly
mg/I
45
47
4.4
Daily Maximum
Proceed to NOV
Concentration
Exceeded
03-2022
001
Effluent
Solids, Total Suspended -
03/29/22
Weekly
mg/I
45
52
15.6
Daily Maximum
Proceed to NOV
Concentration
Exceeded
03-2022
001
Effluent
Solids, Total Suspended -
03/31/22
Weekly
mg/I
30
33.25
10.8
Monthly Average
Proceed to NOV
Concentration
Exceeded
05-2022
001
Effluent
Solids, Total Suspended -
05/24/22
Weekly
mg/I
45
61
35.6
Daily Maximum
Proceed to NOV
Concentration
Exceeded

MONITORING REPORT(MR) VIOLATIONS for:
Report Date: 12/15/2� Page
4 of 4
Permit:
NCO070289
MRS Betweei 11 - 2018 and10 - 2023
Region:
%
Violation Category:%
Program Category: NPDES
WW
Facility Name: %
Param Nam(%
County:
%
Subbasin: %
Violation Action: %
Major Minor:
%
PERMIT: NCO070289
FACILITY: Stones Throw Homeowners Association -Ridgewood
COUNTY: Cabarrus REGION: Mooresville
Farms at Stones Throw WWTP
Limit Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED %
REPORT
OUTFALL
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE Over VIOLATION TYPE
VIOLATION ACTION
05-2022
001
Effluent
Solids, Total Suspended -
05/31/22
Weekly
mg/I
45
90 100 Daily Maximum
Proceed to NOV
Concentration
Exceeded
05-2022
001
Effluent
Solids, Total Suspended -
05/31/22
Weekly
mg/I
30
50 66.7 Monthly Average
Proceed to NOV
Concentration
Exceeded
Monitoring Violation
MONITORING
VIOLATION
UNIT OF
CALCULATED %
REPORT
OUTFALL
LOCATION
PARAMETER
DATE
FREQUENCY
MEASURE
LIMIT
VALUE Over VIOLATION TYPE
VIOLATION ACTION
03-2022
001
Effluent
BOD, 5-Day (20 Deg. C) -
03/05/22
Weekly
mg/I
Frequency Violation
Proceed to NOV
Concentration
03-2022
001
Effluent
Coliform, Fecal MF, MFC
03/05/22
Weekly
#/100ml
Frequency Violation
Proceed to NOV
Broth, 44.5 C
03-2022
001
Effluent
Nitrogen, Ammonia Total (as
03/05/22
Weekly
mg/I
Frequency Violation
Proceed to NOV
N) - Concentration
09-2019
001
Effluent
Nitrogen, Total -
09/30/19
Quarterly
mg/I
Frequency Violation
Proceed to NOV
Concentration
09-2019
001
Effluent
Phosphorus, Total (as P) -
09/30/19
Quarterly
mg/I
Frequency Violation
Proceed to NOV
Concentration
03-2022
001
Effluent
Solids, Total Suspended -
03/05/22
Weekly
mg/I
Frequency Violation
Proceed to NOV
Concentration
12 -2019
001
Effluent
Temperature, Water Deg.
12/28/19
5 X week
deg c
Frequency Violation
No Action, Facility
Centigrade
Reporting Error
09 -2021
001
Effluent
Temperature, Water Deg.
09/04/21
5 X week
deg c
Frequency Violation
No Action, Facility
Centigrade
Reporting Error