NCG080676_MONITORING INFO_20181023

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO. /v
DOC TYPE ❑HISTORICAL FILE
MONITORING REPORTS
DOC DATE ❑ SDI D a3
YYYYMM DD

Semi-annual Stormwater Disc arge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCGO80000
Date submitted February 21,_2018
CERTIFICATE OF COVERAGE NO. NCGO80676 SAMPLE COLLECTION YEAR Year 5 Period 2
FACILITY NAME Carrboro Public Works Garage rna'� jCC )SAMPLE PERIOD ❑ Jan -June 2 July -Dec
COUNTY ORANGE R EC � V C `"' or ❑ Monthly' _ (month)
PERSON COLLECTING SAMPLES _ J Frei/ SwSG OCT 2 3 2018 DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
LABORATORY Pace Analytical Lab Cert. # 12/ 40 ❑Zero -flow 0 Water Supply []SA
Comments on sample collection or analysis: H measured in field by CENTRAL FILES 0 Other WS-V, NSW
DWR SECTION
SwSG (Lab Cert No. 5054)
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? ✓ yes _no
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable)
❑ No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
100
Within 6.0 - 9.0
15
-
001
1 01/28/18
807
7.15
1 < 5.0
+/- 115
005
01/28/18
136
6.97
< 5.0
+/- 115
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
, 00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 — 9.0
i
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11, 2013
Page 1 of 2

STORMENT CHARACTERISTICS: •
Date __0.1128/18 (first event sampled)
Total Event Precipitation (inches): 1.65"
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: if you report a sample value in excess of the benchmark, you must implement Tier 1, rer 2, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES FIND
Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMRR including all "No Discharge" reports, within 30 days of receipt of the lab results for at end of monitoring in
the case of "No Discharge" reports to:
NCDEQ/ Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted 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."
(Signature of Permittee) (Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw##tab-4
SWU-250 last revised April 11, 2013
Page 2 of 2

® Semi-annual Stormwater Ditaree Monitorin
for North Carolina Division of Water Quality General Permit No. NCGO80000
Date submitted July 23, 2018
CERTIFICATE OF COVERAGE NO. NCGO80676
FACILITY NAME Carrboro Public Works Garage
COUNTY ORANGE
PERSON COLLECTING SAMPLES J FreiLSwSG
LABORATORY Pace Analytical Lab Cert. # 12140
Comments on sample collection or analysis: pH measured in field by
SwSG (Lab Cert No. 5054)
SAMPLE COLLECTION YEAR Year 6 Period 1
SAMPLE PERIOD ❑ Jan -June Q July -Dec
or ❑ Monthlyl (month)
D10 AGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
2 .1 ❑Zero -flow Q Water Supply ❑SA
2 Other WS-V, NSW
DVw_%
E5
\l PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? ✓ yes _no
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (if applicable)
❑ No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard Onits
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM),.mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
50 or 100 see permit'
within 6.0 — 9.0 -
15
-
001
07/04/18
14.3
6.92
< 5.0
+/- 115
005
07/04/18
11.6
7.23
< 5.0
+/- 115
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
'mg/L
pH,
Standard units
Permit Limit
-
15 RECE-Ii/CMPO
or 100 see permit
6.0 —9.0
oU I 2,3
201$
C
©WaS ,"
ECTION
t For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11, 2013
Page 1 of 2

STORM IONT CHARACTERISTICS: • •
Date 07/04/18R_ (first event sampled)
Total Event Precipitation (inches): 0.38"
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: If you report a sample value in excess of the benchmark, you must implement Trer 1, 7-ter 2, or Tier 3 responses. See General Permit text.
FOR PART AAND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 40R MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ONO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES 0 NO ❑
REGIONAL OFFICE CONTACT NAME: Danny Smith
Mail an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results for at end of monitoring period in
the case of "No Discharge" reports) to:
NCDEQ/ Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted 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."
(Signature of Permittee)
Lo 1-2-0 Vt�'
(Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.ore/web/wq/ws/suf npdessw#tab-4
SWU-250 last revised April 11, 2013
Page 2 of 2

Semi-annual Stormwater Rharge MonitoringReport
for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted
CERTIFICATE OF COVERAGE NO. NCG080676
FACILITY NAME _Carrboro Public Works Garage
COUNTY ORANGE
PERSON COLLECTING SAMPLES J Frei/ SwSG
LABORATORY_ Pace Analytical Lab Cert. # 12140
Comments on sample collection or analysis: _pH measured in field by
SwSG (Lab Cert No. 5054)
May 5 2017
•
SAMPLE COLLECTION YEAR 2017
SAMPLE PERIOD Q Jan -June ❑ July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow Q Water Supply ❑SA
Q Other WS-V, NSW
PLEASE REMEMBER TO SIGN ON THE REVERSE -->
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? ✓ yes
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (if applicable)
no
❑ No discharge this period'
Outfal I
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 — 9.0
15
-
001
1 04/23/17
17.6
6.91
< 5.0
+/- 115
005
04/23/17
13.4
6,82
< 5.0
+/- 115
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfal l
No.
Date
Sample Collected,
mo/dd/yr
100556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
' pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 -- 9.0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11, 2013
Page 1 of 2

STORM AT CHARACTERISTICS: 9
Date 04/23/17__ (first event sampled)`
Total Event Precipitation (inches): 0.85"
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):'
Note: If you report a sample value -in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALLTRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES'FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO 0
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an on inal and one cogy of this D-M-M including all "No Discharge" reports within 30 days of receipt of the lab results for at gnd of monitoring period in
the case of "No Discharge" reports) to:
NCDEQ/ Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted.' Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that
there are significant penalties fox submitting false information, including the possibility of fines and Imprisonment for knowing violations."
(Signature of Pq` ittee) (Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tab-4
SWU-250 last revised April 1 L 2013
Page 2 of 2

Semi-annual Stormwater Wharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted July 8, 2016
CERTIFICATE OF COVERAGE NO. NCGO80676
FACILITY NAME Carrboro Public Works Garage
COUNTY ORANGE
PERSON COLLECTING SAMPLES J Frei/ SwSG
LABORATORY_ Pace Analytical Lab Cert. # 12/ 40
Comments on sample collection or analysis: pH measured infield by
Sw5G (Lab Cert No. 5054)
SAMPLE COLLECTION YEAR 2016
SAMPLE PERIOD CQ Jan -June ❑ July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
RG1... C1� F n ❑Zero -flow 21 Water Supply [:]SAGI V Q Other WS-V, NSW
Jl'l- 1120io
�rNTRA! F8 PLEASE REMEMBER TO SIGN ON THE REVERSE 4
.. t.rl `r-- I �.1
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new mbtG oil per month? ✓ yes _no
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable)
❑ No discharge this period'
Outfa II
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil; Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 - 9.0
15
-
001
06/15/16
13.4
6.92
< 5.3
+/- 105
005
06/15/16
92.7
7.11
< 5.3
+/- 105
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 - 9.0
1 For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11, 2013
Pagel of 2

STORM EIRT CHARACTERISTICS:
Date 05 15 16 (first event sampled)
Total Event Precipitation (inches): 0.21"
. Lw
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: if you repW d sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
FOR PART AAND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEE DANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME oUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE oUTFALL? YES ❑ NO 21
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an oriainol and one copv of this DMR, includina all "No Discharae" reports, within 30 days of receipt of the lab results for at end of monitorina period in
the case of "No Discharae" reports) to:
NCDEQ/ Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina.27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted, Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted 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."
(Signature of Permittee)
07-06
(Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.orp/web/wq/ws/su/npdessw#tab-4
S WU-250
last rcvised April 11, 2013
Pagc 2 of 2

• Semi-annual StormwatlDischar a Monitoring Report
•
� � p
for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted February 1. 2016
CERTIFICATE OF COVERAGE NO. NCGO80676
FACILITY NAME Carrboro Public Works Garage
COUNTY ORANGE
PERSON COLLECTING SAMPLES _ J Frei/ SwSG
LABORATORY Pace Analytical Lab Cert. # 12 633
Comments on sample collection or analysis: pH measured infield by
SwS_G_(Lab Cert No. 5054)
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD ❑ Jan -June 10 July -Dec
or ❑ Monthly' (month)
R FC%, E cWING TO CLASS ❑ORW ❑HQW [:]Trout ❑PNA
1�V ❑Zero -flaw S Water Supply ❑SA
Mali fl =1 Z016 0 Other WS-V NSW
CEN ! h` l,FILES PLEASE REMEMBER TO SIGN ON THE REVERSE �
DWr, =tiTIQN
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? ✓ yes _no
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable)
❑ No gV?&rge this period'
ram—,
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
Newj4%Wr Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 — 9.0
15
-
001
01/15/16
5.3
7.12
< 5.0
+/- 95
005
01/15/16
102
6.94
< 5.0
+/- 95
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfal I
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 — 9.0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April I I, 2013
Page t of 2

STORM EVENSARACTERISTICS: is •
Date 01/15/16 _ (first event sampled)
Total Event Precipitation (inches): 0.28"
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: if you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See Genera! Permit text.
FOR PART AAND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCESIN% ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOURACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO Z
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT'NAME:
7
Division of Water Resources
Attn: DWR Central Filesi,— "&
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
suits
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted 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."
/)/�- 02z-17-1 �p
(Signature of Permittee) (Date)
Additional copies of this form may be downloaded at: http:l/portal.ncdenr.org/­web/wq/ws/su/npdessw#tab-4
SWU-250 last revised April 11, 2013
Page 2 of 2

is
Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted July 10, 2015
CERTIFICATE OF COVERAGE NO. NCGO80676
FACILITY NAME _ _Carrboro Public Works Garage
COUNTY ORANGE
PERSON COLLECTING SAMPLES J Frei/ SwSG
LABORATORY —Pace Analytical Lab Cert. # 12/ 40
Comments on sample collection or analysis: pH measured infield by
SwSG (Lab Cert No. 5054)
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD Q Jan -June ❑ July -Dec
or ❑ Monthly(_ (month?
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
RECEIVED ❑Zero -flow © Water Supply ❑SA
LJ JUL 17 2015 � Other WS-V. NSW
CENTwwRR��. FILES PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons or ne§r�Xll bJl per month? ✓ yes _no
(if yes, report your analytical results in the table immediately below)
Part A; Vehicle Maintenance Areas Monitoring Requirements (If applicable)
No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 — 9.0
15
-
001
06/18/15
1 25.7
6.62
5.0
+/- 95
005
06/18/15
85.9
6.81
< 5.0
+/- 95
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 — 9.0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 111 2013
Page 1 of 2

0 0 0
STORM EVENT CHARACTERISTICS:
Date _06/113/15__ (first event sampled)
Total Event Precipitation (inches): 2.07"
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: if you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 1, or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
+ TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO 0
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an oriainal and one copy of this DMR, includina all "No Discharae" reports. within 30 days of receipt of the lab results for at end of monitoring period in
the case of "No Discharae" reports) to:
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted 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."
(Signature of Permittee) (Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tabb4
SWU-250
last revised April 11, 2013
Page 2 of 2

• • .
Semi-annual Stormwater DisChame Monitoring Report
for North Carolina Division of Water Quality General Permit No..NCGO80000,
Date submitted _ July 20, 2014 - , - s s • _
CERTIFICATE OF COVERAGE NO. NCGO80676 SAMPLE COLLECTION YEAR 2014
FACILITY NAME Carrboro Public Works Garage RE' JVE!�ER1 OD 0 Jaan-J ne' ❑July -Dec iinonfh)'
COUNTY ORANGE ❑
PERSON COLLECTING SAMPLES J Frei/ SwSG JUL 2 4 RIPFHARGING TO CLASS ❑ORW ❑HQW []Trout ❑PNA
LABORATORY Pace Analkical -.' Lail Cert. # , 12/ 40 1 •• r - �. •• —]Zero-flow ;, a. Water Supply..[]SA
Comments on sample collection or analysis: _pH measured in field by CENTRAL, FILES ® Other WS-V, NSW
DWQIBOG
SwSG (Lab Cert No. 5054.)
f -�
PLEASE REMEMBER TO SIGN ON THE REVERSE 4'
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?.. ✓ yes no
(if yes, report your analytical results in the table immediately below)
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable) ❑ No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
00556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil Usage, '
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 — 9.0
1S
-
001
06/20/14
35.7
6.88
< 5.0
005
06/20/14
70.8
6.95
:< 5.O r. .. .`..
+/-. 85 ..:.
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum -Bulk Stations and Terminals (If,applicable)- ti
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/.TPH EPA Method
1664 (SGT-HEM), nig/L
Total Suspended Solids,
mg/L
pH,
Standard units' -
Permit Limit
-
15
50 or 100 see permit
6.0 — 9.0
1 For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April-11, 201.3
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STORM EVENT CHARACTERISTICS:
Date 06/2114 - (firstlerient sampled) ` _ '
Total Event Precipitation (inches): 0.26" -
Date- (list each additional 66nfsampled this reporting period, and rainfall amount} - A '
Total, Event Precipitation (inches): -
Note: 'lf you report a'sample value in excess bf the benchmark, you must implement Tier 1, Tier Z or ter 3.responses. -See General. Permit text
FOR PART A AND PART 8 MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER'AT ANY OUTFALL?'rYES ❑ NO Z
IF YES, HAVE YOU CONTACTED THE DWCI REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR including_ all "No Disch_arae" reports_, within 30 days of receipt of the lab results for at end of monitoring period in
the case of "No Discharge"reports) to:
Division of Water,Quality,
Attn: DWQ Central Files
1617 Mail Service Center'
Raleigh, North Carolina .27699-1617 - - - - - - • -
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that
there are significant penalties for submitting false`Inf6�metion,� including the'possibility of fines and imoisbnment for knowing violations."
(Signature of Permittee) ;;(Date), - _ 4
Additional -copies of this form may be downloaded at: http://portal:ncdeni.org/web/wa/ws/su/npdessw#tab-4
SWU-250 : ' last revised April IT, 2013
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