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Home My WebLink About4103_CityofGreensboro_WhiteStMSWLFPhaseII_VerificationSamplingEventReport_20170411S&ME, Inc. | 8646 W Market St, Ste 105 | Greensboro, NC 27409 | p 336.288.7180 | f 336.288.8980 | www.smeinc.com April 11, 2017 NCDEQ-DWM-SWS 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attention:Ms. Jaclynne Drummond Reference:Verification Sampling Event Results White Street Landfill, Permit No. 41-03 Greensboro, North Carolina S&ME Project No. 1584-98-081C Dear Ms. Drummond: The September 2016 semi-annual monitoring event for Phase II of the White Street Landfill reported the following: ♦Bis (2-ethylhexyl) phthalate was detected in compliance monitoring wells II-4A and II-7 at estimated concentrations of 5.0 µg/L and 3.3 µg/L, exceeding the 2L Standard of 3.0 µg/L. It was also detected at monitoring well II-2 with an estimated concentration of 3.0 µg/L, which equals the 2L Standard of 3.0 µg/L. A review of the historic compliance monitoring database suggested that this was the first detection of this compound at well II-4A and the second detection at well II- 7 in over twenty years. ♦O-Toluidine was detected at compliance monitoring wells II-1 and II-6 with estimated concentrations. Currently, there is no published 2L Standard or IMAC for this compound. Resampling for verification testing was recommended for the apparent exceedances of the corresponding 2L Standard for Bis (2-ethylhexyl) phthalate and the detections of estimated concentrations of O- Toluidine. Data Collection On March 21, 2017, S&ME purged and obtained groundwater samples from compliance wells II-1, II-2, II- 4A, II-6, and II-7, utilizing the low-flow sampling methods employed at this facility. Groundwater samples 4301-II2, 4301-II4A, and 4301-II7 along with duplicate sample 4301-DUP1 obtained from well II-4A were submitted to Environmental Conservation Laboratories (ENCO), and analyzed for Appendix II constituent Bis (2-ethylhexyl) phthalate. Groundwater samples 4301-II1 and 4301-II6, along with duplicate sample 4301-DUPII obtained from well II-1, were submitted to ENCO, and analyzed for Appendix II constituent O- Toluidine. Copies of the Groundwater Sampling Field Data sheets and the associated Laboratory Analytical Report are attached. Verification Sampling Event Results White Street Landfill, Permit No. 41-03 Greensboro, North Carolina S&ME Project No. 1584-98-081C April 11, 2017 2 Analytical Results Analytical results for groundwater samples obtained reported: ♦Bis (2-ethylhexyl) phthalate was not detected above the method detection limit in samples 4301- II2, 4301-II4A, 4301-II7, 4301-DUP1 ♦O-Toluidine was not detected above the method detection limit in samples 4301-II1 and 4301-II6, along with duplicate sample 4301-DUPII Analytical results for the March 21, 2017 sampling of wells II-2, II-4A, and II-7 did not verify the apparent exceedance of the 2L Standard for Bis (2-ethylhexyl) phthalate reported for the September 2016 sampling event. It is recognized that Bis (2-ethylehexyl) Phthalate can be a common field contaminant, capable of producing false positive detections. Similarly, analytical results for the March 21, 2017 sampling of wells II-1 and II-6 did not verify the estimated concentrations of O-Toluidine reported for the September 2016 sampling event. S&ME recommends returning to Appendix II monitoring without adding Bis (2-ethlylhexyl) phthalate or O-Toluidine as a triggered Appendix II constituents. If you have any questions please contact Edmund Henriques at 336-288-7180. Sincerely, S&ME, Inc. Edmund Q.B. Henriques, L.G.Lyndal A Bulter. Senior Geologist/Project Manager Project Professional Attachments Groundwater Sampling Field Data Sheets Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:x Weather: Sampled By:Air Temp: feet feet 8.62 feet Purge Method Sample Method Start 1250 Stop 1400 Purge Rate ml/min Control Settings On: 2.5 sec.Start 1405 Stop 1415 Off: 27.5 sec. Pressure: 18 psi 2" well: height:8.62 x .163 =1.40506 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1255 3/21/2017 17.94 6.34 3.114 99 4.51 16.72 16.79 1300 3/21/2017 17.43 6.29 3.151 76 1.95 11.72 16.80 1305 3/21/2017 17.46 6.28 3.163 66 1.39 8.27 16.83 1310 3/21/2017 17.43 6.27 3.165 56 1.02 4.83 16.91 1315 3/21/2017 17.74 6.27 3.171 48 0.87 4.22 16.92 1320 3/21/2017 17.64 6.26 3.173 39 0.81 3.95 17.02 1325 3/21/2017 17.83 6.26 3.174 26 0.68 3.05 17.02 1330 3/21/2017 17.83 6.25 3.183 13 0.65 3.73 17.05 1335 3/21/2017 18.03 6.25 3.181 0 0.66 2.52 17.08 1340 3/21/2017 18.35 6.25 3.182 -8 0.62 2.11 17.09 1345 3/21/2017 18.34 6.25 3.189 -15 0.61 2.07 17.11 1350 3/21/2017 18.16 6.24 3.186 -21 0.66 1.71 17.13 1355 3/21/2017 18.17 6.24 3.188 -20 0.63 1.64 17.14 1400 3/21/2017 18.27 6.24 3.189 -22 0.61 1.62 17.15 Final Readings 1400 3/21/2017 18.27 6.24 3.189 -22 0.61 1.62 17.15 * C units mS/cm mV mg/L NTU Sample Collection Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 4.0 100 Height of water column: Bladder Pump Depth to water from measuring point:16.38 Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Depth to well bottom from measuring point: Gary Simcox Tuesday, March 21, 2017 25.00 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II1 Tuesday, March 21, 2017 1405 Sunny 70 *F Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet 9.62 feet Purge Method Sample Method Start 1030 Stop 1105 Purge Rate ml/min Control Settings On: 3.0 sec.Start 1110 Stop 1120 Off: 27.0 sec. Pressure:psi 2" well: height:9.62 x .163 =1.56806 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1035 3/21/2017 18.08 6.47 1.006 71 4.42 3.42 19.99 1040 3/21/2017 18.62 6.46 0.985 58 2.89 1.91 19.97 1045 3/21/2017 18.45 6.48 0.985 46 2.09 1.51 19.93 1050 3/21/2017 18.48 6.48 0.985 41 1.76 1.44 19.91 1055 3/21/2017 18.62 6.48 0.987 40 1.48 0.91 19.93 1100 3/21/2017 18.51 6.49 0.986 39 1.34 0.87 19.95 1105 3/21/2017 18.57 6.50 0.987 38 1.29 0.72 19.94 Final Readings 1105 3/21/2017 18.57 6.50 0.987 38 1.29 0.72 19.94 * C units mS/cm mV mg/L NTU Depth to well bottom from measuring point:29.00 Height of water column: Tuesday, March 21, 2017 Tuesday, March 21, 2017 White Street Landfill 1584-98-081 4103-II2 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point:19.38 1110 Sunny 60 *FGary Simcox Bladder Pump 100 Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Sample Collection Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 4.0 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 900 Stop 940 Purge Rate ml/min Control Settings On: 3.0 sec.Start 945 Stop 955 Off: 30.0 sec. Pressure: 29 psi 2" well: height:17.86 x .163 =2.91118 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 905 3/21/2017 14.82 5.54 1.753 104 8.15 1.97 12.53 910 3/21/2017 14.81 5.61 1.753 60 7.41 1.34 12.51 915 3/21/2017 14.92 5.71 1.757 30 6.62 1.52 12.51 920 3/21/2017 14.98 5.75 1.767 18 5.97 0.86 12.58 925 3/21/2017 14.95 5.78 1.770 14 5.98 0.78 12.57 930 3/21/2017 15.08 5.77 1.771 10 5.56 0.52 12.62 935 3/21/2017 15.10 5.79 1.773 8 5.26 0.35 12.63 940 1/14/1900 15.12 5.78 1.773 8 5.47 0.39 12.59 Final Readings 940 3/21/2017 15.12 5.78 1.773 8 5.47 0.39 12.59 * C units mS/cm mV mg/L NTU Tuesday, March 21, 2017 17.86 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data 945 Sunny 60 *F White Street Landfill 1584-98-081 4103-II4A Gary Simcox Volume of water in well Tuesday, March 21, 2017 Measuring point:Top of Casing Depth to water from measuring point:12.14 Depth to well bottom from measuring point:30.00 Height of water column: Bladder Pump 100 Sample Collection Time Well Purging & Sample Collection Bladder Pump Purge Time Was well purged dry Field Analyses Volume of water removed 7.0 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1445 Stop 1545 Purge Rate ml/min Control Settings On: 3.0 sec.Start 1550 Stop 1600 Off: 27.0 sec. Pressure: 16 psi 2" well: height:4.71 x .163 =0.76773 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1450 3/21/2017 18.73 6.56 2.102 -24 3.76 111.60 12.99 1455 3/21/2017 18.50 6.54 2.229 -50 3.03 75.22 13.19 1500 3/21/2017 18.29 6.48 2.295 -53 2.65 54.07 13.29 1505 3/21/2017 18.21 6.50 2.273 -62 2.49 36.12 13.45 1510 3/21/2017 18.25 6.49 2.155 -61 2.51 28.41 13.42 1515 3/21/2017 18.50 6.49 2.006 -57 2.15 22.61 13.49 1520 3/21/2017 18.58 6.49 1.903 -57 2.21 17.28 13.54 1525 3/21/2017 18.40 6.48 1.844 -55 2.41 11.14 13.60 1530 3/21/2017 18.30 6.48 1.845 -55 2.55 9.96 13.64 1535 3/21/2017 18.00 6.49 1.846 -57 2.54 7.61 13.69 1540 3/21/2017 18.10 6.49 1.859 -59 2.59 6.56 13.71 1545 3/21/2017 18.02 6.49 1.876 -61 2.61 5.95 13.74 Final Readings 1545 3/21/2017 18.02 6.40 1.876 -61 2.61 5.95 13.74 * C units mS/cm mV mg/L NTU Was well purged dry Field Analyses Volume of water in well Volume of water removed 4.0 Height of water column:4.71 Bladder Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Depth to water from measuring point:12.29 Tuesday, March 21, 2017 Depth to well bottom from measuring point:17.00 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II6 Friday, November 16, 1900 1550 Sunny 70 *FGary Simcox Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1140 Stop 1215 Purge Rate ml/min Control Settings On: 3.0 sec.Start 1220 Stop 1230 Off: 27.0 sec. Pressure: 21 psi 2" well: height:12.68 x .163 =2.06684 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1145 3/21/2017 17.24 5.58 0.683 137 1.58 2.40 14.68 1150 3/21/2017 17.07 5.51 0.683 148 0.89 3.96 14.75 1155 3/21/2017 17.01 5.51 0.681 152 0.71 3.75 14.79 1200 3/21/2017 16.95 5.51 0.681 155 0.70 3.74 14.79 1205 3/21/2017 17.19 5.52 0.681 156 0.82 3.82 14.82 1210 3/21/2017 17.27 5.52 0.681 158 0.91 3.71 14.87 1215 3/21/2017 17.22 5.52 0.681 159 0.99 3.75 14.86 Final Readings 1215 3/21/2017 17.22 5.52 0.610 159 0.99 3.75 14.86 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II7 1220 Sunny 70 *F Water Level & Well Data Tuesday, March 21, 2017 Tuesday, March 21, 2017 Depth to well bottom from measuring point:27.00 Height of water column:12.68 Gary Simcox Depth to water from measuring point:14.32 Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Field Analyses Volume of water in well Volume of water removed 4.0 Blader Pump 100 Sample Collection Time Was well purged dry Laboratory Analytical Report