NCG080676_DMR_20200623

Semi-annual Stormwater uischarge Monitoring Report
ECO PY for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted June 23, 2020
CERTIFICATE OF COVERAGE NO. NCGO80676 SAMPLE COLLECTION YEAR 2020
FACILITY NAME Carrboro Public Works Garage SAMPLE PERIOD 2 Jan -June ❑ July -Dec
COUNTY ORANGE RECEIVE or ❑Monthly' (month)
PERSON COLLECTING SAMPLES J Frei/ SwSG DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
LABORATORY Pace Analytical Lab Cert. # 12/ 40 JUL 0 6 2020 ❑Zero -flow 2 Water Supply ❑SA
Comments on sample collection or analysis: pH measured infield by CENTF.— L riLEg 0 Other WS-V. NSW
SwSG (Lab Cert No. 5054) DINR JECTIOPI
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 _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
06/11/20
8.1
6.81
< 5.0
+/-115
005
06/11/20
78.9
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
50 or 100 see permit
6.0-9.0
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 1 I, 2013
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STORM EVJT CHARACTERISTICS:
Date 06/11/20 (first event sampled)
Total Event Precipitation (inches): 0.56"
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 ATTHE 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 0 NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES 0 NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR including all "No Discharge" reports within 30 days of receipt of the lab results (or 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."
f, �, zeZ�
(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
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