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HomeMy WebLinkAboutNCS000573_Tier 1_20210517 Belews Creek - Stormwater Outfall SW006 Monitoring ce • ay\ Oa 5°\\ \ tia> Akis, 6C-: cap ca` �e� O\ O ti ti ti tx O ey c!,,> be' tea` °tea \�° a\�o �� °tea °�a\ way \�° \�° °tea a\ �e \O� ,O� ,�� ,�� ,�� ,�� ,�� ,�� °� ��e �a� eo ,° \ a� �e \C \ �\ �o \5� \fie ��\ o` °� ye ,ot \ot \ot got dot \ot got y� co a�� oyQ P� • c\P ,o_ ,\ �,, ,,cs * e Q.\ °.� �� �\ c\� �� tea °r °r °r °r °r °r °r ecc �Q\e ca�� �a�`' ,et yew` tom `���J atc` Coto QQe .e� aa\ �\� \ec•. a� c\V cc, co. Pt Pt Pt Pt Pt Pt Pt tt` �a �° Q� �° � Pt �° 0e La Lr Lo 0` �e Pc �e '\r V`t� �e O� QC� QCQ' QC� <:F Q�� e QC� C°� Units inches SU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ng/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 18"CMP to Intake Canal-Draining ash haul Benchmark NA 6.0-9.0 100 0.0003 0.34 NE 0.065 0.003 0.9 0.010 0.335 0.075 0.09 0.056 NE 0.126 NE 15 <-Detect-> routes Frequency SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA 6/13/2017 0.027 7.6 56 <0.0003 0.00431 0.057 <0.001 <0.001 0.00839 0.0131 0.00933 0.00141 <0.001 0.00416 <0.0002 0.194 25.2 <4.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tier I(TSS,Cu,Zn),monthly sampling 7/28/2017 No flow no flow 08/2017 No flow no flow 9/1/2017 1.06 10.8 430 0.00226 0.0129 <0.05 <0.001 <0.001 0.273 0.0349 0.0210 0.00821 <0.001 0.00426 _ 0.000381 0.204 51.00 <4.9 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tier I(pH)Tier II(TSS,Cu,Zn) 10/23/2017 1.54 7.9 59 0.000521' 0.00274 <0.05 <0.001 <0.001 0.00783 0.0122 0.00482 0.00171 <0.001 0.00217 <0.0002 0.079 17.8 <4.5 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 Tier II(Cu)1st compliance for others 11/-2017 No flow no flow 12/20/2017 0.41 7.5 32 <0.0003 0.00161 <0.05 <0.001 <0.001 0.00509 0.00688 0.00348 0.00101 <0.001 0.00249 <0.0002 0.109 22.00 <4.7 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 <0.4 1st C:Cu,2nd C:pH,TSS,Zn 1-2-3/2018 No flow no flow 4/23/2018 0.53 6.7 110 <0.0003 0.00336 <0.05 <0.001 <0.001 0.01450 0.0211 0.01040 0.00330 <0.001 0.00199 0.000218 0.467 19.75a„g <4.8 Discontinued Tier III(Cu),Tier II(Zn),Tier I(TSS),Hg^ 05-07/2018 No flow no flow 10/10/2018 0.3 6.8 33 <0.0002 0.00195 <0.05 <0.001 <0.001 0.00585 0.0123 0.00457 0.00138 <0.001 0.00258 <0.0002 0.160 18.5a„g <5.2 Discontinued Tier III(Cu,Zn),Hg>12 11/2/2018 0.30 6.7 29 <0.0002 0.00129 <0.05 <0.001 <0.001 0.00389 0.00899 0.00305 0.00119 <0.001 0.00188 <0.0002 0.155 19.3a„g <4.7 Discontinued Tier III(Zn),1st c Cu,Hg>12 12/14/2018 0.50 6.6 9.8 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 0.00265 0.00114 <0.001 <0.001 0.00117 <0.0002 0.180 14.8a„g <4.5 Discontinued Tier III(Zn),2nd c Cu,Hg>12 1/29/2019 0.20 6.1 5.3 <0.0002 0.00206 <0.05 <0.001 <0.001 0.00601 0.00646 0.00404 0.00162 <0.001 0.00174 <0.0002 0.124 71.0a„g <5.0 Discontinued Tier III(1st C:Zn,3rd C:Cu),Hg>12 2-3/2019 No flow no flow 4/5/2019 0.8 7.0 11 <0.0002 0.00117 <0.05 <0.001 <0.001 0.00141 0.00427 0.00128 <0.001 <0.001 0.00395 <0.0002 0.210 37.80 <5.0 Discontinued Tier III(Zn,>3rd C:Cu),Hg>12 5-10/2019 No flow no flow 11/12/2019 0.34 7.1 30 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00343 0.00421 0.00208 <0.001 <0.001 0.00160 <0.0002 0.071 43.50„g <5.0 Discontinued Tier III(1st c:Zn,>3rd C:Cu),Hg>12 12/10/2019 0.23 6.4 24 <0.0002 0.00124 <0.05 <0.001 <0.001 0.00412 0.00515 0.00236 0.00120 <0.001 0.00138 <0.0002 0.070 18.6a„g <5.0 Discontinued Tier III(2nd c:Zn,6th C:Cu),Hg>12 1/24/2020 1.04 7.0 5.9 <0.0002 0.00101 <0.05 <0.001 <0.001 0.00120 0.00244 <0.001 <0.001 <0.001 0.00172 <0.0002 0.233 28.4a„g <5.0 Discontinued Tier III(Zn,7th C:Cu),Hg>12 02-04/2020 No flow no flow 5/27/2020 1.72 8.5 <2.5 <0.0002 <0.001 <0.05 <0.001 <0.001 <0.001 0.00388 <0.001 <0.001 <0.001 0.00180 <0.0002 0.075 6.26 <5.0 Discontinued Tier III(1stC:Zn,8th C:Cu) 06-07/2020 No flow no flow 8/21/2020 1.17 6.2 2.6 <0.0002 0.00125 <0.05 <0.001 <0.001 <0.001 0.00245 <0.001 <0.001 <0.001 0.00289 <0.0002 0.050 13.4a„g <5.0 Discontinued Tier III(2ndC:Zn,9th C:Cu),Hg>12 9/17/2020 1.79 7.4 22 <0.0002 0.00107 <0.05 <0.001 <0.001 0.00240 0.00479 0.00180 <0.001 <0.001 0.00293 <0.0002 0.080 31.2a„g <5.0 Discontinued Tier Ill(3rd c:Zn,10th c:Cu),Hg>12 10-11/2020 No flow no flow 12/14/2020 1.15 6.1 46 <0.0002 <0.001 <0.05 <0.001 <0.001 0.00213 0.00304 0.00147 <0.001 <0.001 <0.001 <0.0002 0.120 19.4a„g <5.0 Discontinued Tier III(4th c:Zn,11th c:Cu),Hg>12 01/2021 No flow no flow 2/11/2021 0.67 6.3 44 <0.0002 0.00102 <0.05 <0.001 <0.001 0.00279 0.00358 0.00253 <0.001 <0.001 0.00301 <0.0002 0.854 65.1a„g <5.0 Discontinued Tier III(Zn,12th c:Cu),Hg>12 03-04/2021 No flow no flow I I I I I 1 I I I 1 SU-standard units <-not detected at the following level SA-semi-annual mg/L-milligrams per liter NA-not applicable SA-QCA semi-annualor quarterly during during coal or ash transport C-compliance ug/L-micrograms per liter NE-not established Disc-discontinued ng/L-nanograms per liter PCB-polychlorinated biphenyls ROS-representative outfall status Compliant no shading NFlow-no flow Tier Requirements for Benchmark Exceedances Tier I One exceedance of benchmark value-Inspection and evaluate causes within two weeks after receiving results and implement corrective actions within two months. Monthly sampling frequency of outfall until three(3)consecutive results are below benchmark value. Tier II Two consecutive exceedances of benchmark value-evaluate causes within two weeks and implement corrective actions within two months. Sampling conducted monthly until three(3)consecutive results are below benchmark value. Tier III Four exceedances of benchmark value during monitoring period-evaluate causes and implement corrective actions. Notify NCDENR within 30 daysof receiving results for fourth exceedance.Sampling protocols evaluated and potentially modified by NCDENR. Other Notes: Mercury above 12 ng/L must be reported on the DMR but does not activate a Tier response Belews Creek Stormwater Sampling Matrix Summary through February 2021 Permit# NCS000573 Analytical monitoring of stormwater discharges shall be performed during a measurable storm event,with sampling beginning during the first 30 minutes of flow and continues until completed. A"measurable storm event"is a storm event that results in an actual discharge from the permitted site outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter interval is representative for local storm events during the sampling period,and the permittee obtains approval from the local DWQ Regional Office. Grab samples shall be collected within the first 30 minutes of discharge. When physical separation between outfalls prevents collecting all samples within the first 30 minutes,sampling shall begin within the first 30 minutes and shall continue until completed. Qualitative SDO observations must be completed quarterly(unless in Tier status)during a measurable storm event,but do not have to be within the first 30 minutes of flow. Next Sample Sample Tier 1 Tier II 30-Day Draft DNLR 9utfall Required Collection Collected SDO1 Frequency Compliant or Tier Tier III Comments Corrective Corrective Completed Sampling Attempts (Yes1No) Inspection Inspection Notification Action Action missing previous data 6/13/2017 Yes Yes SA Cu,Zn Tier I(Cu,Zn) 7/28/17 No Flow M no flow - 8/4/2017 no flow 8-2017 No Flow M no flow no flow 9/1/2017 Yes Yes M pH,TSS I Cu,Zn 10/2/2017 Tier I(pH,TSS)Tier II(Cu,Zn) 10/23/2017 Yes Yes M see comment Cu Tier II(Cu),Tier III at next Cu exceedance, Bic.pH,TSS,Zn 11-2017 No Flow M no flow w 12/20/2017 no flow 12/20/2017 Yes Yes M see comment see comment High Hg,2nd C:pH,TSS,Zn, 1st C:Cu 1/11/2018 No Flow M no flow no flow 2/28/2018 No Flow M no flow 3/9/2018 no flow 3-2018 No Flow M no flow-see comment 4/3/2018 no flow 4/23/2018 Yes Yes M TSS I Zn ® completed completed completed 5/16/2018 Tier I(TSS),Tier II,(Zn),Tier III(Cu),Hg high 05-2018 No Flow M no flow no flow 06-2018 No Flow M no flow no flow 07-2018 No Flow M no flow no flow 08-2018 No Flow M no flow no flow 09-2018 No Flow M no flow no flow SW006 10/10/2018 Yes Yes M TSS Zn,Cu completed Tier III(Cu,Zn),1st C:TSS,Hg high 18"CMP to Next Flow 11/2/2018 Yes Yes M TSS Zn,Cu Tier III(Zn), 1st C:Cu),2nd C:TSS,Hg high Intake Canal 12/14/2018 Yes Yes M Zn,Cu Tier III(Zn,2nd C:Cu),3rd C:TSS,Hg high 1/29/2019 Yes Yes M Zn,Cu Tier III(3rd C:Cu, 1st C:Zn),Hg high 2-3/2019 No Flow M no ualif in flow event no flow 4/5/2019 Yes Yes M 5/2/2019 Tier III(Zn,>3rd c:Cu),Hg>12 5-10/2019 No Flow 3Q2019 M no flow-see comment no qualifying flow -SDO July 2019 11/12/2019 Yes Yes M Zn,Cu 12/6/2019 Tier Ill(1st c:Zn,>3rd c:Cu),Hg>12 12/10/2019 Yes Yes M Zn,Cu 12/31/2019 Tier III(2nd c:Zn,6th c:Cu),Hg>12 1/24/2020 Yes Yes M Zn,Cu 2/13/2020 Tier III(Zn,7th c:Cu),Hg>12 2-4/2020 No Flow M no flow no flow 5/27/2020 Yes Yes M Zn,Cu 6/17/2020 Tier III(1st c:Zn,8th c:Cu) 06-07/2020 No NA M no flow No Flow 8/21/2020 Yes Yes M Zn,Cu 9/15/2020 Tier III(2nd c:Zn,9th c:Cu),Hg>12 9/17/2020 Yes Yes M Zn,Cu 10/17/2020 Tier III(3rd c:Zn, 10th c:Cu),Hg>12 10/2020 No NA M no flow No Flow 12/14/2020 Yes Yes M Zn,Cu 12/30/2020 Tier III(4th c:Zn, 11th c:Cu),Hg>12 01/2021 No NA M no flow No Flow 2/11/2021 Yes Yes MMINEEMIll 3/4/2021 Tier III(Zn,12th c:Cu),Hg>12 Page 3 of 8 Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Inpection Outfall Date Date Date Date Date Date Date Date Date Date Date Date Date Date 3 3/1/2018 6/13/2017 8/17/2017 9/1/2017 10/23/2017 12/20/2017 1/11/2018 4/23/2018 4 3/1/2018 8/17/2017 9/1/2017 10/23/2017 12/20/2017 1/11/2018 4/23/2018 5 3/1/2018 6/13/2017 9/1/2017 10/23/2017 1/11/2018 4/23/2018 6 3/14/2017 8/14/2017 8/17/2017 9/1/2017 10/23/2017 12/20/2017 1/11/2018 4/23/2018 11/2/2018 4/23/2018 5/7/2018 10/10/2018 11/2/2018 12/14/2018 1/29/2019 7 3/14/2017 5/24/2017 8/14/2017 8/17/2017 10/23/2017 1/11/2018 4/23/2018 9 3/14/2017 5/24/2017 8/14/2017 8/17/2017 1/11/2018 4/24/2018 11 3/14/2017 5/24/2017 8/14/2017 8/17/2017 10/24/2017 1/11/2018 4/24/201 10/26/2018 12 ROS 5/24/2017 1/11/2018 13 ROS 5/24/2017 8/14/2017 8/17/2017 10/23/2017 1/11/2018 4/23/201 10/26/2018 14 ROS 5/24/2017 8/17/2017 1/11/201810 15 3/1/2017 5/24/2017 6/13/2017 8/14/2017 10/23/2017 12/20/2017 1/11/2018 '4/23/2018 10/26/2018 16 5/24/2017 8/14/2017 1/11/2018 4/24/2018 17 3/28/2018 5/24/2017 8/14/2017 • 1/11/2018 4/24/2018 18A 3/28/2018 5/24/2017 4 8/14/2017 8/17/2017 1/11/2018 4/24/2018 10/26/2018 18B 3/14/2017 4/24/2018 22 3/14/2017 5/24/2017 8/14/2017 8/17/2017 10/9/2017 1/11/2018 4/24/2018 24 3/28/2018 8/14/2017 8/17/2017 10/9/2017 12/20/2017 1/11/2018 4/24/2018 26 3/14/2017 5/24/2017 8/17/2017 12/20/2017 27 3/14/2017 5/24/2017 8/14/2017 10/9/2017 10/23/2018 1/11/2018 10/26/2018 il 28 new 29 new .._,. Outfall Inspection Dates 6 11/12/2019 12/10/2019 1/24/2020 2/4/2020 3/14/2020 5/27/2020 6/7/2020 7/8/2020 8/21/2020 9/17/2020 10/11/2020 11/15/2020 12/14/2020 1/26/2021 2/11/2021 3/4/2021