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Home My WebLink AboutWA-26393_31591_CA_RPTS_20200218_RMR PERIODIC MONITORING REPORT UST SITES MCAS CHERRY POINT MARINE CORPS AIR STATION CHERRY POINT, NORTH CAROLINA VOLUME I SECOND SEMESTER (JULY 2019 - DECEMBER 2019) CONTRACT NO. N40085-19-D-9050 ITMS, INC. PROJECT NOs. 9050-03-5510 & 9050-05-TBD CATLIN ENGINEERS AND SCIENTISTS PROJECT NO. 219001 PREPARED FOR: ITMS, INC. 5601 VIRGINIA BEACH BLVD., SUITE 101 VIRGINIA BEACH, VIRGINIA Prepared By: 220 Old Dairy Road Wilmington, NC 28405 (910) 452-5861 CORPORATE LICENSURE NO. FOR ENGINEERING SERVICES C-0585 NC CORPORATE NUMBER FOR GEOLOGY SERVICES : C-118 PERIODIC MONITORING REPORT MCAS CHERRY POINT UST CLOSURE AND MANAGEMENT PROGRAM FOR UST SITES VOLUME I SECOND SEMESTER 2019 (JULY 2019 THROUGH DECEMBER 2019) MCAS CHERRY POINT FEBRUARY 18, 2020 WARNING: This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under the FOi Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. ITMS, INC. CONTRACT NO. N40085-19-D-9050 ITMS, INC. PROJECT NOs. 9050-03-5510 & 9050-05-TBD CATLIN ENGINEERS AND SCIENTISTS PROJECT NO. 219001 PREPARED FOR: ITMS, INC. 5601 VIRGINIA BEACH BLVD. -SUITE 101 VIRGINIA BEACH, VA 23462 (757) 965-8491 PREPARED BY: CATLIN ENGINEERS AND SCIENTISTS 220 OLD DAIRY ROAD WILMINGTON, NORTH CAROLINA 28405 (910) 452-5861 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS PERIODIC MONITORING REPORT MCAS CHERRY POINT UST CLOSURE AND MANAGEMENT PROGRAM FOR UST SITES SITES AT MCAS CHERRY POINT, NORTH CAROLINA INTRODUCTION NARRATIVE TABLE I INDEX OF SITES FOR THIS REPORT TABLE II CAMP SAMPLING SCHEDULE TABLE III INDEX OF CLOSED SITES SINCE 1998 TABLE IV HISTORY OF NC REGULATORY STANDARDS TABLE V INDEX OF INJECTION PERMIT SITES TABLE VI FREE PRODUCT RECOVERY TOTAL (LAST TWO YEARS) FIGURE I FACILITY LOCATIONS MAP FIGURE II MCAS CHERRY POINT SITE LOCATIONS MAP 1.0 SITE 130 EXECUTIVE SUMMARY TABLE 1.1A SITE 130 FIELD MEASUREMENTS TABLE 1.1B SITE 130 HISTORICAL FIELD MEASUREMENT DATA TABLE 1.2A SITE 130 GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 1.2B SITE 130 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 1.3A SITE 130 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 1.3B SITE 130 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 FIGURE 1.1 SITE 130 FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 1.2 SITE 130 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L – UST COMPOUNDS - AS OF AUGUST 2019 FIGURE 1.3 SITE 130 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 2.0 SITE 133 EXECUTIVE SUMMARY TABLE 2.1A SITE 133 FIELD MEASUREMENTS TABLE 2.1B SITE 133 HISTORICAL FIELD MEASUREMENT DATA TABLE 2.2A SITE 133 GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 2.0 SITE 133 - (cont.) TABLE 2.2B SITE 133 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 2.3A SITE 133 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 2.3B SITE 133 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 2.4 SITE 133 HISTORICAL EFFLUENT LABORATORY ANALYTICAL RESULTS FIGURE 2.1 SITE 133 FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 2.2A SITE 133 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L – UST COMPOUNDS AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 2.2B SITE 133 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L – UST COMPOUNDS AS OF AUGUST 2019 – LOWER SURFICIAL AQUIFER FIGURE 2.3A SITE 133 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 2.3B SITE 133 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – LOWER SURFICIAL AQUIFER 3.0 SITE 137 EXECUTIVE SUMMARY TABLE 3.1 SITE 137 HISTORICAL FIELD MEASUREMENT DATA TABLE 3.2 SITE 137 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 3.3 SITE 137 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 3.4 SITE 137 EFFLUENT AIR LABORATORY ANALYTICAL RESULTS TABLE 3.5 SITE 137 HISTORICAL EFFLUENT LABORATORY ANALYTICAL RESULTS FIGURE 3.1 SITE 137 FREE PRODUCT PLUME MAP AS OF DECEMBER 2019 4.0 SITE 1083 EXECUTIVE SUMMARY TABLE 4.1A SITE 1083 FIELD MEASUREMENTS TABLE 4.1B SITE 1083 HISTORICAL FIELD MEASUREMENT DATA TABLE 4.2A SITE 1083 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 4.2B SITE 1083 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 4.0 SITE 1083 - (cont.) TABLE 4.3A SITE 1083 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 4.3B SITE 1083 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 AND EPA METHOD 8260B (NAPHTHALENE ONLY) FIGURE 4.1 SITE 1083 FREE PRODUCT PLUME MAP AS OF SEPTEMBER 2019 FIGURE 4.2 SITE 1083 EPA METHOD 602 BY SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF SEPTEMBER 2019 FIGURE 4.3 SITE 1083 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF SEPTEMBER 2019 5.0 SITE 1640 EXECUTIVE SUMMARY TABLE 5.1A SITE 1640 FIELD MEASUREMENTS TABLE 5.1B SITE 1640 HISTORICAL FIELD MEASUREMENT DATA TABLE 5.2A SITE 1640 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 5.2B SITE 1640 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 5.3A SITE 1640 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 5.3B SITE 1640 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 5.4A SITE 1640 GROUNDWATER LABORATORY ANALYTICAL RESULTS – MADEP VPH/EPH TABLE 5.4B SITE 1640 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS – MADEP VPH/EPH FIGURE 5.1 SITE 1640 FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 5.2A SITE 1640 EPA METHOD 602 BY SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICAL AQUIFER FIGURE 5.2B SITE 1640 EPA METHOD 602 BY SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – LOWER SURFICAL AQUIFER FIGURE 5.3A SITE 1640 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICAL AQUIFER FIGURE 5.3B SITE 1640 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – LOWER SURFICAL AQUIFER FIGURE 5.4A SITE 1640 MADEP VPH/EPH COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICAL AQUIFER MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 5.0 SITE 1640 - (cont.) FIGURE 5.4B SITE 1640 MADEP VPH/EPH COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – LOWER SURFICAL AQUIFER 6.0 SITE 3996 EXECUTIVE SUMMARY TABLE 6.1A SITE 3996 FIELD MEASUREMENTS – THIRD QUARTER 2019 TABLE 6.1B SITE 3996 FIELD MEASUREMENTS – FOURTH QUARTER 2019 TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA TABLE 6.2A SITE 3996 GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B – THIRD QUARTER 2019 TABLE 6.2B SITE 3996 GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B – FOURTH QUARTER 2019 TABLE 6.2C SITE 3996 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 6.3A SITE 3996 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 – THIRD QUARTER 2019 TABLE 6.3B SITE 3996 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 – FOURTH QUARTER 2019 TABLE 6.3C SITE 3996 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 FIGURE 6.1A SITE 3996 FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 6.1B SITE 3996 FREE PRODUCT PLUME MAP AS OF NOVEMBER 2019 FIGURE 6.2A SITE 3996 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L - UST COMPOUNDS AS OF AUGUST 2019 FIGURE 6.2B SITE 3996 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L - UST COMPOUNDS AS OF NOVEMBER 2019 FIGURE 6.3A SITE 3996 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 FIGURE 6.3B SITE 3996 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF NOVEMBER 2019 7.0 SITE 4075 EXECUTIVE SUMMARY TABLE 7.1A SITE 4075 FIELD MEASUREMENTS TABLE 7.1B SITE 4075 HISTORICAL FIELD MEASUREMENT DATA TABLE 7.2A SITE 4075 GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 7.2B SITE 4075 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 7.3A SITE 4075 GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 7.0 SITE 4075 - (cont.) TABLE 7.3B SITE 4075 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 7.4 SITE 4075 HISTORICAL EFFLUENT LABORATORY ANALYTICAL RESULTS FIGURE 7.1 SITE 4075 FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 7.2A SITE 4075 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L – UST COMPOUNDS AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 7.2B SITE 4075 SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L – UST COMPOUNDS AS OF FEBRUARY 2019 – LOWER SURFICIAL AQUIFER FIGURE 7.3A SITE 4075 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 7.3B SITE 4075 EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF FEBRUARY 2019 – LOWER SURFICIAL AQUIFER 8.0 SITE PIT 6 EXECUTIVE SUMMARY TABLE 8.1 SITE PIT 6 HISTORICAL FIELD MEASUREMENT DATA TABLE 8.2 SITE PIT 6 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 8.3 SITE PIT 6 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 FIGURE 8.1 SITE PIT 6 FREE PRODUCT PLUME MAP AS OF DECEMBER 2019 9.0 SITE PIT 15 EXECUTIVE SUMMARY TABLE 9.1 SITE PIT 15 HISTORICAL FIELD MEASUREMENT DATA TABLE 9.2A SITE PIT 15 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 9.2B SITE PIT 15 HISTORICAL SURFACE WATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 9.3A SITE PIT 15 HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 9.3B SITE PIT 15 HISTORICAL SURFACE WATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 FIGURE 9.1 SITE PIT 15 FREE PRODUCT PLUME MAP AS OF DECEMBER 2019 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 10.0 SITE TFB EXECUTIVE SUMMARY TABLE 10.1A SITE TFB FIELD MEASUREMENTS TABLE 10.1B SITE TFB HISTORICAL FIELD MEASUREMENT DATA TABLE 10.2A SITE TFB GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 10.2B SITE TFB HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 10.3A SITE TFB GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 10.3B SITE TFB HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 10.4 SITE TFB EFFLUENT AIR LABORATORY ANALYTICAL RESULTS FIGURE 10.1 SITE TFB FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 10.2A SITE TFB SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 10.2B SITE TFB SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF FEBRUARY 2019 – LOWER SURFICIAL AQUIFER FIGURE 10.2C SITE TFB SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF FEBRUARY 2019 – UPPER YORKTOWN AQUIFER FIGURE 10.3A SITE TFB EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 – UPPER SURFICIAL AQUIFER FIGURE 10.3B SITE TFB EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF FEBRUARY 2019 – LOWER SURFICIAL AQUIFER FIGURE 10.3C SITE TFB EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF FEBRUARY 2019 – UPPER YORKTOWN AQUIFER 11.0 SITE TFD EXECUTIVE SUMMARY TABLE 11.1 SITE TFD HISTORICAL FIELD MEASUREMENT DATA TABLE 11.2 SITE TFD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS – EPA METHOD 602 BY SM 6200B TABLE 11.3 SITE TFD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS – EPA METHOD 610 BY EPA METHOD 625 TABLE 11.4 SITE TFD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS – MADEP VPH/EPH FIGURE 11.1 SITE TFD FREE PRODUCT PLUME MAP AS OF DECEMBER 2019 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE OF CONTENTS – continued 12.0 SITE 2ND LAAD EXECUTIVE SUMMARY TABLE 12.1A SITE 2ND LAAD FIELD MEASUREMENTS TABLE 12.1B SITE 2ND LAAD HISTORICAL FIELD MEASUREMENT DATA TABLE 12.2A SITE 2ND LAAD GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 12.2B SITE 2ND LAAD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 602 BY SM 6200B TABLE 12.2C SITE 2ND LAAD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - SM 6200B TABLE 12.3A SITE 2ND LAAD GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 12.3B SITE 2ND LAAD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - EPA METHOD 610 BY EPA METHOD 625 TABLE 12.4A SITE 2ND LAAD GROUNDWATER LABORATORY ANALYTICAL RESULTS - MADEP VPH/EPH TABLE 12.4B SITE 2ND LAAD HISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS - MADEP VPH/EPH TABLE 12.5 SITE 2ND LAAD EFFLUENT AIR LABORATORY ANALYTICAL RESULTS FIGURE 12.1 SITE 2ND LAAD FREE PRODUCT PLUME MAP AS OF AUGUST 2019 FIGURE 12.2 SITE 2ND LAAD EPA METHOD 602 BY SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 FIGURE 12.3 SITE 2ND LAAD EPA METHOD 610 BY EPA METHOD 625 COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 FIGURE 12.4 SITE 2ND LAAD MADEP VPH/EPH COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 INTRODUCTION The purpose of this Periodic Monitoring Report is to present the results of recent monitoring events performed at petroleum release sites located at Marine Corps Air Station Cherry Point (MCAS Cherry Point). Monitoring and reporting is being performed in accordance with the MCAS Cherry Point UST Closure and Management Program adopted by MCAS Cherry Point Environmental Affairs Department. A listing of sites for which sampling results are included in this Periodic Monitoring Report is presented in Table I and locations of these sites are shown on Figure I and Figure II. This Periodic Monitoring Report is designed such that all data and information pertaining to any individual site is contained entirely within one section of the report and each section is devoted entirely to one site. Therefore, each section serves as a stand-alone monitoring report for the respective site. Each section begins with an Executive Summary which provides information about location, monitoring, groundwater hydraulics, free-phase product plumes, dissolved-phase plumes, potential receptors, and remediation at the site. Each Executive Summary is supported by several site-specific tables and figures. MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE I INDEX OF SITES FOR THIS REPORT SITE NAME NCDEQ INCIDENT NO. SITE LOCATION REPORT SECTION NO. 130 38785 (Formerly 31591) MCAS Cherry Point 1.0 133 7144, 9739, 9741 MCAS Cherry Point 2.0 137 6443 MCAS Cherry Point 3.0 1083 9839 MCAS Cherry Point 4.0 1640 9274 MCAS Cherry Point 5.0 3996 31591 MCAS Cherry Point 6.0 4075 6360, 9950, 9140 9276 MCAS Cherry Point 7.0 Pit 6 31501 MCAS Cherry Point 8.0 Pit 15 18715 MCAS Cherry Point 9.0 TFB 6359 MCAS Cherry Point 10.0 TFD 9265 MCAS Cherry Point 11.0 2nd LAAD 38152 MCAS Cherry Point 12.0 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE II CAMP SAMPLING SCHEDULE SECTION SITE ID GW MONITORING FREQUENCY PROPOSED SAMPLING DATES AIR SAMPLING FREQUENCY WASTE STREAM SAMPLING FREQUENCY 1 130 Annual August 2020 NA NA 2 133 Annual August 2020 NA Annual - 4th Quarter 2020 3 137 Annual February 2020 Annual - 4th Quarter 2020 Annual - 4th Quarter 2020 4 1083 Semi-Annual February 2020 NA NA August 2020 5 1640 Annual August 2020 NA NA 6 3996 No Sampling Planned 7 4075 Semi-Annual - Lower February 2020 NA Annual - 4th Quarter 2020 Semi-Annual - Upper August 2020 8 Pit 6 Annual February 2020 NA NA 9 Pit 15 Annual February 2020 NA NA 10 TFB Semi-Annual – Lower/York February 2020 Annual - 4th Quarter 2020 NA Semi-Annual –Upper August 2020 11 TFD Annual February 2020 NA NA 12 2nd LAAD Semi-Annual February 2020 Annual - 4th Quarter 2020 NA August 2020 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE III INDEX OF CLOSED SITES SINCE 1998 SITE NAME SITE LOCATION NCDEQ INCIDENT NO. DATE CLOSED BY NCDEQ 8048 MCAS Cherry Point Not Issued 2/11/1998 1021 MCAS Cherry Point Not Issued 12/11/1998 1648 MCAS Cherry Point 14837 12/11/1998 497 MCAS Cherry Point 18514 12/18/1998 1779 MCAS Cherry Point Not Issued 12/18/1998 248 MCAS Cherry Point Not Issued 12/18/1998 3916 MCAS Cherry Point Not Issued 1/11/1999 1010 MCAS Cherry Point 19235 3/11/1999 1228 MCAS Cherry Point 19236 3/11/1999 1290 MCAS Cherry Point 19234 3/11/1999 498 MCAS Cherry Point 13133 12/7/1999 160 MCAS Cherry Point 13132 12/7/1999 85 MCAS Cherry Point 11277 2/10/2000 1786-3* MCAS Cherry Point 9273 2/10/2000 491* MCAS Cherry Point 12516 5/7/2000 1005-2 MCAS Cherry Point 8990 5/7/2000 1696 MCAS Cherry Point 14837 5/7/2000 3907* MCAS Cherry Point 14573 5/7/2000 8052 MCAS Cherry Point 7493 8/31/2000 487* MCAS Cherry Point 8308 10/17/2000 3904* MCAS Cherry Point 15120 2/21/2001 MTFP* MCAS Cherry Point 9839 7/26/2001 Old CP Hydrant MCAS Cherry Point Not Issued 8/28/2001 Atlantic Hydrant System MCAS Cherry Point Not Issued 4/2/2002 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE III - continued INDEX OF CLOSED SITES SINCE 1998 SITE NAME SITE LOCATION NCDEQ INCIDENT NO. DATE CLOSED BY NCDEQ 1786* MCAS Cherry Point 9373 9/13/2002 Pit 6 MCAS Cherry Point 31023 11/26/2002 296* MCAS Cherry Point 9951 1/22/2003 Hertford #4 MCAS Cherry Point 31069 1/28/2003 TFC* MCAS Cherry Point 6906 3/11/2003 1701 MCAS Cherry Point Not Issued 3/12/2003 3982 MCAS Cherry Point Not Issued 6/9/2003 7012 MCAS Cherry Point 15275 10/20/2003 927* MCAS Cherry Point Not Issued 3/29/2004 Segment 22 JP-5 Pipeline MCAS Cherry Point 31269 5/4/2004 Segment 24 JP-5 Pipeline MCAS Cherry Point 31271 5/5/2004 Segment 2 JP-5 Pipeline MCAS Cherry Point 31272 5/6/2004 Segment 1 JP-5 Pipeline MCAS Cherry Point 31273 5/7/2004 Segment 14 JP-5 Pipeline MCAS Cherry Point 31285 6/2/2004 Segment 15 JP-5 Pipeline MCAS Cherry Point 31287 6/2/2004 Segment 16 JP-5 Pipeline MCAS Cherry Point 31286 6/2/2004 8052/TAFDS MCAS Cherry Point Not Issued 9/9/2004 Lifts A and B MCAS Cherry Point Part of 6360 12/13/2004 Pit 1 MCAS Cherry Point 31390 12/17/2004 82-AT MCAS Cherry Point 32128 6/20/2005 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE III – continued INDEX OF CLOSED SITES SINCE 1998 SITE NAME SITE LOCATION NCDEQ INCIDENT NO. DATE CLOSED BY NCDEQ 82-Bogue MCAS Cherry Point Not Issued 9/21/2005 84-Bogue MCAS Cherry Point 32254 9/21/2005 85-Bogue MCAS Cherry Point 32255 9/21/2005 86-Bogue MCAS Cherry Point 32256 9/21/2005 1783* MCAS Cherry Point 9275 10/27/2005 486* MCAS Cherry Point 9264 11/7/2005 1958 MCAS Cherry Point 31600 5/8/2006 MWSS-274 MCAS Cherry Point 85579 8/7/2006 1672* MCAS Cherry Point 6905 3/19/2007 TFB Transfer Lines (Soils Only) MCAS Cherry Point 6359 3/2/2009 TAFDS MCAS Cherry Point 15256 1/5/2010 100 Gates Road MCAS Cherry Point 31974 1/11/2010 1773* MCAS Cherry Point 31691 3/2/2010 P-120 Sec 1 GW1 MCAS Cherry Point 31956 5/5/2010 P-120 Sec 1 GW2 MCAS Cherry Point 31956 5/5/2010 P-120 Sec 2 GW2 MCAS Cherry Point 38073 10/20/2010 56 Gates Road MCAS Cherry Point 38151 12/3/2010 64 Gates Road MCAS Cherry Point 38149 12/13/2010 62 Gates Road MCAS Cherry Point 38157 1/3/2011 29 Gates Road MCAS Cherry Point 38164 1/11/2011 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE III – continued INDEX OF CLOSED SITES SINCE 1998 SITE NAME SITE LOCATION NCDEQ INCIDENT NO. DATE CLOSED BY NCDEQ 68 Gates Road MCAS Cherry Point 38150 2/1/2011 66 Gates Road MCAS Cherry Point 38174 3/3/2011 137 Conveyance Piping MCAS Cherry Point 31920 3/14/2011 P-120 Sec 2 GW1 (Fuel Hydrant System) MCAS Cherry Point 38069 6/30/2011 P-120 Sec 2 GW2 MCAS Cherry Point 38069 6/30/2011 24 Gates Road MCAS Cherry Point 38246 10/19/2011 Lanham Housing, Site 621 MCAS Cherry Point 38247 10/19/2011 9 Gates UST MCAS Cherry Point 38266 1/23/2012 NADEP Washrack Pipeline MCAS Cherry Point 93139 4/10/2012 1640 Tarmac MCAS Cherry Point Not Issued 4/12/2012 Lanham Housing, Nash Road MCAS Cherry Point 38338 12/4/2013 78 Catawba, Nugent Cove MCAS Cherry Point 38495 5/29/2014 Tower Valve Box* MCAS Cherry Point 31252 2/19/2015 Pit 12* MCAS Cherry Point 31356 12/19/2017 121* MCAS Cherry Point 31238 10/19/2018 Segment 20* MCAS Cherry Point 31312 1/15/2020 * Indicates site was included in the UST Closure and Management Program MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE IV HISTORY OF NC REGULATORY STANDARDS Parameter Previous NC 2L Standard (ug/L) Current/Interim NC 2L Standard (ug/L) Effective Change Date of Current/Interim NC 2L Standard Acetic Acid NE 5000 4/4/2018 Acetochlor NE 100 12/1/2010 Acetochlor ESA NE 1000 12/1/2010 Acetochlor OXA NE 1000 12/1/2010 Acetophenone NE 700 4/1/2011 Acrolein NE 4 10/1/2010 Alachlor NE 0.4 8/1/2010 Aldrin NE 0.002 10/1/2010 Ammonia NE 1,500 8/1/2010 Antimony NE 1 8/1/2010 Benzaldehyde NE 700 4/1/2011 Benzyl Alcohol NE 700 10/1/2010 Beryllium NE 4 10/1/2010 Bromomethane NE 10 8/1/2010 Butanol, n- (n-butyl alcohol) NE 700 8/1/2010 Butanol, sec- (sec-butyl alcohol) NE 10,000 10/1/2010 Butanol, tert- (tert-butyl alcohol) NE 10 6/1/2011 Carbazole NE 2 4/1/2011 4-Chlorotoluene NE 24 10/1/2010 Cobalt NE 1 10/1/2010 Dalapon NE 200 8/1/2010 Dibenzofuran NE 28 5/24/1999 1,4-Dibromobenzene NE 70 8/1/2010 Dibromomethane NE 70 10/1/2010 Dichloroacetic Acid NE 0.7 10/1/2010 1,2-Dichloroethylene, mixed isomers NE 60 10/1/2010 2,4-Dichlorophenol NE 0.98 8/1/2010 DDE NE 0.1 8/1/2010 Dinoseb NE 7 8/1/2010 Diphenyl Ether NE 100 4/1/2011 2,4-Dinitrotoluene NE 0.1 4/1/2011 Diquat NE 20 8/1/2010 Endosulfan sulfate NE 40 4/1/2011 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE IV – continued HISTORY OF NC REGULATORY STANDARDS Parameter Previous NC 2L Standard (ug/L) Current/Interim NC 2L Standard (ug/L) Effective Change Date of Current/Interim NC 2L Standard Endothall NE 100 8/1/2010 Ethanol (ethyl alcohol) NE 4,000 4/1/2011 Ethyl tert-butyl ether (ETBE) NE 47 4/1/2011 alpha-Hexachlorocyclohexane NE 0.006 4/1/2011 beta-Hexachlorocyclohexane NE 0.02 4/1/2011 2-Hexanone NE 40 4/1/2011 4-Isopropyltoluene (p-cymene) NE 25 4/1/2011 Methyl Isobutyl Ketone NE 100 12/1/2010 Methyl Methacrylate NE 25 8/1/2010 1-Methylnaphthalene NE 1 4/1/2011 2-Methyl phenol (o-cresol) NE 400 4/1/2011 Perchlorate & Perchlorate Salts NE 2 12/1/2010 Perfluorooctanoic acid (PFOA;C8) NE 2 12/6/2006 Picramic Acid NE 0.7 10/1/2010 Polychlorinated Biphenyls NE 0.09 10/1/2010 Propylene Glycol NE 140,000 7/16/2012 Tert-Amyl Methyl Ether (TAME) NE 128 4/1/2011 1,2,4,5-Tetrachlorobenzene NE 2 8/1/2010 1,1,1,2-Tetrachloroethane NE 1 8/1/2010 Thallium NE 0.2 10/1/2010 Tin NE 2,000 10/1/2010 p-Toluic Acid NE 35 4/4/2018 1,1,2-Trichloroethane NE 0.6 8/1/2010 2,4,5-Trichlorophenol NE 63 10/1/2010 2,4,6-Trichlorophenol NE 4 10/1/2010 Vanadium (excluding vanadium pentoxide) NE 0.3 10/1/2010 Vinyl Acetate NE 88 10/1/2010 NE = Not established MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 TABLE V INDEX OF INJECTION PERMIT SITES SITE NAME PERMIT No. INJECTION TYPE DATE PERMIT APPLICATION RECEIVED BY NCDEQ DATE PERMIT APPROVED BY NCDEQ DATE PERMIT MODIFIED DATE OF PERMIT EXPIRATION DATE FINAL PROJECT EVALUATION RECEIVED BY NCDEQ NCDEQ CLOSEOUT DATE 121 WI0700208 GW Tracer, Surfactant, nutrients, bacteria 2/3/11 10/6/11 Mod. 6/4/13 Ext. 6/21/11 10/31/11Mod 6/30/13 Ext. 10/6/11 6/30/18 1/15/15 10/19/18 1083 WQ0035748 Surfactant Recirculation 1/6/12 Renewal 9/16/13 4/6/12 Renewal 11/8/13 Renewed 11/8/13 Original 3/31/14 Renewed 3/31/19 Not Submitted Yet Not Applicable Yet 1773 WI0700106 Surfactant 5/10/07 8/20/07 Currently None 8/31/09 2/25/09 3/25/11 8049 WI0800160 Surfactant 12/5/08 6/15/09 Mod. 3/25/09 6/16/09 Mod. 6/15/09 2/28/11 6/7/10 4/13/11 8049 WI800336 ORC™ Filter Socks 5/13/13 5/14/13 Currently None Unknown Not Applicable Not Applicable Pit 11 WI0700227 RegenOx™ 5/31/11 7/14/11 Currently None 6/30/13 Report Submitted by EAD 3/20/13 12/19/17 Pit 11 Mod WI0700208 Surfactant, nutrients, bacteria 10/6/11 (Mod. of Bldg. 121 permit) 10/31/11 (Mod. of Bldg. 121 permit) 10/6/11 5/31/13 Report Submitted by EAD 3/20/13 12/19/17 TVB WI0700255 Surfactant, nutrients, bacteria 10/19/11 12/15/11 Currently None 11/31/14 Report Submitted by EAD 7/14/14 7/24/14 2nd LAAD WI0700320 Ambient Air 3/14/13 3/20/13 Currently None Unknown Not Applicable Not Applicable Site 130 133 137 1083 1640 3996 4075 B 4075 C PIT 6 PIT 15 TFB TFD 2nd LAAD MCCS Month Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Product (gal)Jan-18 0 4 8 0 0 0 59 225 0 6 0 0 0 0Feb-18 0 2 8 0 0 0 46 176 0 2 0 0 0 0 Mar-18 0 2 15 0 0 0 74 173 0 2 0 0 0 0 Apr-18 0 2 24 0 0 0 75 247 0 2 0 0 0 0 May-18 0 4 21 0 0 0 57 223 0 3 0 0 0 0 Jun-18 0 2 39 0 0 0 57 230 0 1 0 0 0 0 Jul-18 1 3 25 0 0 0 70 275 0 2 0 0 0 0 Aug-18 1 8 78 0 0 0 56 179 0 7 0 0.19124 0 0 Sep-18 0 2 3 0 0 0 33 97 0 0 0 0 0 0Oct-18 1 7 15 1 0 0 21 129 0 1 0 0.25 0 0Nov-18 1 2 9 0 0 0 7 180 0 2 0 0.03905 0 0Dec-18 0 5 18 0 0 0 5 213 0 3 0 0.03124 0 0Jan-19 0 6 9 0 0 0 5 157 0 0 0 0.01562 0 0 Feb-19 2 12 31 0 0 2 14 232 0 0 0 0.02 0 0 Mar-19 0 20 37 0 0 0 40 173 0 0 0 0.02 0 0 Apr-19 0 5 27 0 0 0 32 222 0 0 0 0.02 NM 0 May-19 0 2 28 0 0 0 37 259 0 0 0 0 NM 0 Jun-19 0 3 28 0 0 0 44 169 0 3 0 0.04 0 0 Jul-19 0 0 38 0 0 0 39 194 0 4 0 0.02 0 0 Aug-19 0 0 48 0 0 0 68 195 0 4 0 0.02 0 0 Sep-19 0 0 2 0 0 0 22 169 0 0 0 0 0 0 Oct-19 0 0 18 0 0 0 13 301 0 2 0 0.02 0 0 Nov-19 0 0 10 0 0 0 51 273 0 4 0 0 0.22 0 Dec-19 0 0 22 0 0 0 67 307 0 2 0 0.01 0 - Totals 6.00 91.00 303.00 1.00 0.00 0.00 579.00 2,736.00 0.00 31.00 0.00 0.51 0.00 0.00 Average 0.25 3.79 12.63 0.04 0.00 0.00 24.13 114.00 0.00 1.29 0.00 0.02 0.00 0.00 TABLE VI FREE PRODUCT RECOVERY TOTAL (LAST TWO YEARS) Note: At sites with free product systems where interim product recovery is performed (i.e. bailing, pumping, etc.), the recovered product is emptied into the system; therefore, the interim product recovery volume is included in the total product volume on this table. NM = Not Measured MCAS Cherry Point FY-019; Table VI_FPTotals_thru DEC 2019.xlsx CATLIN Project No. 219001 CATLIN Engineers and Scientists February 2020 ^_MCAS Cherry Point £¤ 58 33 70 £¤17 £¤70 £¤17 ³ Data Source: Adapted from NCOneMaps.com FIGUREPROJECTTITLE JOB NO.DATE SCALE DRAWN BY CHECKED BY IFACILITY LOCATIONS MAP 219001 JAN 2020 NO SCALE THW SAC MCAS CHERRY POINTUST CLOSURE ANDMANAGEMENT PROGRAM S:\GIS Projects\CPLTM\GIS\Sites\CAMP Figure 1.mxd SECTION 6.0 OF THE PERIODIC MONITORING REPORT MCAS CHERRY POINT UST CLOSURE AND MANAGEMENT PROGRAM FOR UST SITES MONITORING EVENT: SECOND SEMESTER 2019 (JULY 2019 THROUGH DECEMBER 2019) SITE-SPECIFIC MONITORING REPORT FOR SITE 3996 NCDEQ INCIDENT NO. 31591 WARNING: This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under the FOi Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Project No. 219001 CATLIN Engineers and Scientists February 2020 MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 SITE 3996 6.0 EXECUTIVE SUMMARY 6.1 SITE INFORMATION Site Location: MCAS Cherry Point Incident Number(s): 31591 NC State Plane Coordinates (NAD83): x = 2633063.3; y = 425816.66 Risk Classification: MCAS temporarily assigned INTERMEDIATE risk due to presence of free-phase product. Source Type(s): JP-5, Diesel, AV Gasoline, Waste Oil/Hydraulic Fluid 6.2 MONITORING EVENT INFORMATION Sampling Performed By: ITMS/GES (Quarterly) Date(s) of This Monitoring Event: 8/20/2019 and 11/5/2019 Date(s) of Previous Monitoring Event: 2/21/2019 and 5/7/2019 Reason(s) for This Monitoring Event: Track migration and attenuation of dissolved-phase plume, track migration and/or volume reduction of free-phase product plume. Site Monitoring Status at Time of This Event: Interim and product recovery monitoring. 6.3 GROUNDWATER HYDRAULICS Hydraulic Conductivity: 66.0 feet/day Effective Porosity: 0.25 Hydraulic Gradient: Upper Surficial Aquifer, 3rd Quarter = 0.0123 feet/feet, Upper Surficial Aquifer, 4th Quarter = 0.0094 feet/feet Average Linear Groundwater Flow Velocity: Upper Surficial Aquifer, 3rd Quarter = 3.2446 feet/day, Upper Surficial Aquifer, 4th Quarter = 4.4871 feet/day Groundwater Flow Direction: Upper Surficial Aquifer = East-Northeast (eastern) and West-Southwest (western) during both 3rd and 4th Quarters. See Figures 6.1A and 6.1B. Range of Measured Water Table Elevations: Ranges from 14.82 feet in well 72GW62 to 19.57 feet in well 74GW23 during the Third Quarter monitoring event and from 14.48 feet in well 72GW63 to 19.27 feet in well 74GW23 during the Fourth Quarter monitoring event. See Tables 6.1A, 6.1B and 6.1C. Significant Changes from Previously Reported Data: None. 6.4 FREE PRODUCT PLUME Free Product Present: No Free Product Thickness Measured: During the Third and Fourth Quarter 2019 sampling events, 36 and 37 wells were gauged each event, respectively, of which none contained measurable thicknesses of free-phase product. See Tables 6.1A, 6.1B and 6.1C. Plume Size and Location: See Figures 6.1A and 6.1B. MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 Free Product Removed from Site This Period: None. Significant Changes from Previously Reported Data: No free-phase product was detected during the Second Semester 2019 reporting period. Free product was last detected in monitoring well 74GW16 in April 2013. 6.5 DISSOLVED-PHASE PLUME Plume Concentrations: See Tables 6.2A through 6.3C. Plume Size and Location: See Figures 6.2A through 6.3B. Significant Changes from Previously Reported Data: SM 6200B (The EPA Method 602 analytical list was utilized until the First Semester 2013 sampling event, where it was replaced with the full SM 6200B analytical list) During the First Quarter (February 2019) and Second Quarter (May 2019) monitoring events (in which both shallow and deep wells were sampled), SM 6200B contaminant concentrations exceeding their respective 2L Standards were revealed in these wells as follows: 1,1-Dichloroethane (both 74GW16 and 74GW23 in February and only 74GW16 in May), Benzene (72GW52A, 74GW16 and 74GW23 in February and only 72GW52A and 74GW23 in May), Isopropylbenzene (74GW23), Naphthalene (74GW16), Tricholoroethene (72GW52A and 74GW29) and Total Xylenes (74GW23). During the Third Quarter (August 2019) monitoring event (in which both shallow and deep wells were sampled), SM 6200B contaminant concentrations exceeding their respective 2L Standards were revealed in these wells as follows: 1,1-Dichloroethane (74GW16), Benzene (72GW52A, 74GW16 and 74GW23), Isopropylbenzene (74GW23), Naphthalene (74GW16), Toluene (74GW23), Tricholoroethene (72GW52A and 74GW29), Total Xylenes (74GW23) and Vinyl Chloride (74GW16). During the Fourth Quarter (November 2019) monitoring event (in which both shallow and deep wells were sampled), SM 6200B contaminant concentrations exceeding their respective 2L Standards were revealed in these wells as follows: 1,1-Dichloroethane (74GW16), Benzene (72GW52A, 74GW16 and 74GW23), Isopropylbenzene (72GW33, 72GW52A and 74GW23), Naphthalene (74GW16), Toluene (74GW23), Tricholoroethene (72GW52A and 74GW29), Total Xylenes (74GW23) and Vinyl Chloride (74GW16). Standard Method 6200B plume boundaries have been modified based on the current monitoring event’s analytical data. See Tables 6.2A through 6.2C and Figures 6.2A and 6.2B. EPA Method 610 by EPA Method 625 During both the First Quarter (February 2019) and Second Quarter (May 2019) monitoring events as well as during the Third Quarter (August 2019) and Fourth Quarter (November 2019) monitoring events, monitoring well 74GW16 revealed contaminant concentrations of Naphthalene above the 2L Standard. EPA MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 Method 610 plume boundaries have been modified based on the current monitoring event’s analytical data. See Tables 6.3A through 6.3C and Figures 6.3A and 6.3B. Please note that site monitoring wells were not sampled if they were inaccessible or found to contain free-phase product. 6.6 REMEDIAL SYSTEM AIR MONITORING DATA AND EFFLUENT DISCHARGE DATA Air Contaminant Concentrations: Not Applicable. Effluent Discharge Contaminant Concentrations: Not Applicable. 6.7 POTENTIAL RECEPTORS Contaminated Water Supply Well(s)?: No Potable Water Supply Well Within 1,000 Feet of Source Area?: No Any Water Supply Well Within 250 Feet of Source Area?: No Surface Water Body Within 500 Feet?: No Past Evidence of Vapors?: No. Two air quality monitoring reports previously developed by J.A. Jones revealed no vapor issues at either Building 130 or Building 140. However, vapors were discovered in Building 131 during a previous Air Sparge testing. Since this discovery, modifications have been made to the AS and SVE system to alleviate the problem. Significant Changes from Previously Reported Data?: None. 6.8 REMEDIATION Status: AS/SVE system was shut down in the beginning of January 2019 to facilitate site closure. Type: AS/SVE, and natural attenuation Progress: Ongoing Construction Contractor: J.A. Jones Operating Contractor: ITMS/GES 6.9 OBSERVATIONS AND COMMENTS Historical: The Air Station O&M contractor ITMS (previously SDC Group, Inc.) has historically operated the AS/SVE system. The AS/SVE system operated until early December 2013 at which time the air sparge system was shutdown due to water accumulating in the SVE lines which renders the SVE system ineffective to remove vapors from the air sparging. An investigation into the source of water entering the SVE lines began in early 2014. Additional system improvements such as reconfigured control logic and air flow regulators have been implemented to optimize system operation. In addition, replacement of the ball valves and installation of sight glasses at the AS/SVE wells has been implemented to aid in the reduction of water accumulating in the SVE lines. Since air sparge operations have not been consistent over an extended time MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 period, CATLIN continues to evaluate total system operations and has been monitoring the high benzene concentrations in well 74GW23. Groundwater samples from well 74GW23 have indicated Benzene concentrations between approximately 10,000 ug/L to 20,000 ug/L from 2009 to 2013. The groundwater sample from well 74GW23 in August 2014 indicated Benzene at a concentration of 6,820 ug/L which was a decrease in the historical concentrations, but the concentration is still above the GCL (5,000 ug/L) for this compound. Also, due to the high levels of contamination in this sample and the sample from well 74GW16 the laboratory had to dilute these samples and analyze them a second time. Unfortunately, the re-analysis was conducted beyond the “hold” time for the SM 6200B method and therefore the reported results for these two wells are suspect. To address this situation, these shallow wells were resampled during the semi-annual sampling event in March 2015. The analytical results from March 2015 for the groundwater sample from well 74GW23 revealed Benzene at a concentration of 8,620 ug/L which is a decrease in the historical concentrations of 10,000 to 20,000 ug/L, but the concentration was still above the GCL (5,000 ug/L) for this compound. The investigation of the source of water entering the SVE lines was completed in the First Semester 2015 but the results were inconclusive. Pressure testing of the system was conducted and the results of the pressure testing of the system indicated there are leaks in the piping system(s); however, these areas are inaccessible and can not be easily repaired. Therefore, attempting to fix the leaks in the system was determined to be cost prohibited; rather, a detailed plan was developed to restart the AS system in a staggered pattern and at specific pressures. The restarting of the AS/SVE system commenced on July 1, 2015. Between July and Mid-October 2015 continual adjustments were implemented in operating the AS/SVE. Over this time period the AS/SVE system operated periodically. By Mid-October 2015 the proper adjustments were made and from Mid-October through December 2015 the AS system operated effectively at the subject site. As of December 2015, the AS system was operating for approximately 11 hours per day, seven days per week. The AS system operated for approximately 11 hours per day, seven days per week during all of 2016 (January through December 2016), except for routine down time for any operation and maintenance activities. Also, the AS system operated for approximately 11 hours per day, seven days per week during the First Semester 2017 (January through June 2017). During the Second Semester 2017 (July through December 2017) the AS system operated for approximately 12 hours per day, seven days per week. The AS system operated for approximately 12 hours per day, seven days per week for all of 2018 (January through December 2018), except for routine down time for any operation and maintenance activities and weather shutdowns (i.e. Hurricane Florence in September 2018). The system operation appeared to be positively influencing dissolved-phase contaminant concentrations based on their declining trend. Based on the declining trend in dissolved-phase contaminant concentrations, it MCAS Cherry Point FY-19; 219001VOL1.RPT44 CATLIN Engineers and Scientists CATLIN Project No. 219001 February 2020 was decided that the AS/SVE system should be shut down. The AS/SVE system was shut down in the beginning of January 2019 to facilitate pursuing NFA at the subject site. Current: The Benzene concentration in monitoring well 74GW23 is the main regulatory driver at the subject site. The Benzene concentration in this well over the past four years is as follows: • August 2015 = 10,900 ug/L • February 2016 = 4,590 ug/L • August 2016 = 9,310 ug/L • February 2017 = 11,200 ug/L • August 2017 = 3,700 ug/L • February 2018 = 4,900 ug/L • August 2018 = 137 ug/L • November 2018 = 229 ug/L • February 2019 = 287 ug/L • May 2019 = 836 ug/L • August 2019 = 4,600 ug/L • November 2019 = 2,760 ug/L As documented above, the Benzene concentration in well 74GW23 in February 2018 was 4,900 ug/L which was just below the GCL for Benzene of 5,000 ug/L. Therefore, AS system adjustments were implemented in an attempt to increase the influence in the vicinity of this monitoring well. The adjustments stated above appear to have been successful as the August 2018 and November 2018 sampling results revealed a significant decrease in the Benzene concentration in well 74GW23. Based on the significant reduction in the Benzene concentration in well 74GW23, the AS/SVE system was shut down in early January 2019. In addition, it was decided to implement quarterly sampling to track any significant contaminant rebound after system shut down. Quarterly sampling was planned for February, May, August and November 2019. The Benzene concentrations in well 74GW23 during the four quarterly sampling events in 2019 indicate that the concentrations have been below the GCL and there is a declining trend in contaminant concentrations. Based on the quarterly sampling results, the NCDEQ WaRO was contacted in November 2019 to request NFA with a Groundwater LUR. The NCDEQ WaRO responded in an email on 12/4/2019 indicating that NFA with a Groundwater LUR could be implemented at the subject site. Also, historically (around 2006) the NCDEQ Incident Numbers for Site 130 and Site 3996 were combined (Incident #31591). However, to achieve NFA with a Groundwater LUR for Site 3996 the incidents would need to be split for these two sites. In an email from 12/13/2019 the NCDEQ WaRO agreed to split the two sites back into separate incident numbers. Site 3996 will remain NCDEQ Incident Number 31591 and Site 130 will now be NCDEQ Incident Number 38785. No additional sampling is planned at the subject site for the First Semester 2020 and implementation of the NRP and Groundwater LUR will begin. FIELD MEASUREMENTS - THIRD QUARTER 2019 SITE 3996 TABLE 6.1A Well No TYPE STICKUPTOC 8/20/2019Date Measured: Product Thickness DTW/DTP BGSDTW/DTP Corrected GW Elevation -0.3524.25T-II72GW31 0.00 6.786.43 17.82 -0.3824.17T-III72GW32 0.00 8.988.60 15.57 -0.3123.54T-II72GW33 0.00 8.047.73 15.81 -0.3326.30T-II72GW34 0.00 10.6110.28 16.02 -0.2625.49T-II72GW35 0.00 10.6410.38 15.11 -0.3028.23T-II72GW52A 0.00 9.078.77 19.46 -0.2728.28T-III72GW53A 0.00 9.088.81 19.47 -0.1823.81T-II72GW62 0.00 9.178.99 14.82 -0.1923.79T-III72GW63 0.00 9.128.93 14.86 -0.2924.23T-II74GW01 0.00 7.947.65 16.58 -0.4424.15T-III74GW02 0.00 8.237.79 16.36 -0.3926.70T-II74GW03 0.00 10.6710.28 16.42 0.0025.93T-II74GW04 0.00 9.149.14 16.79 -0.3025.66T-II74GW05 0.00 9.499.19 16.47 -0.3025.40T-III74GW06 0.00 8.998.69 16.71 -0.2725.41T-II74GW07 0.00 9.078.80 16.61 -0.3425.48T-II74GW08 0.00 9.338.99 16.49 -0.3325.68T-II74GW09 0.00 9.308.97 16.71 -0.3725.49T-II74GW10 0.00 9.379.00 16.49 -0.3825.69T-II74GW11 0.00 9.459.07 16.62 -0.4025.54T-II74GW12 0.00 9.419.01 16.53 -0.3625.64T-II74GW13 0.00 9.489.12 16.52 -0.4124.72T-II74GW14 0.00 9.018.60 16.12 -0.2925.64T-II74GW15 0.00 9.529.23 16.41 -0.2723.90T-II74GW16 0.00 7.707.43 16.47 -0.3625.41T-II74GW17 0.00 9.308.94 16.47 -0.3826.96T-II74GW18 0.00 10.9010.52 16.44 -0.4124.06T-II74GW19 0.00 7.987.57 16.49 -0.3124.33T-III74GW20 0.00 8.197.88 16.45 -0.4023.40T-II74GW21 0.00 7.346.94 16.46 -0.3623.39T-III74GW22 0.00 7.326.96 16.43 Page 1 Notes: 1. T-l = Type l monitoring well T-II = Type II monitoring well T-III = Type III monitoring well RW = Recovery well 2. TOC = Top of well casing elevation, in feet relative to Mean Sea Level. 3. STICK UP = Height of well casing above land surface in feet. 4. DTW = Depth to water (in feet) from top of well casing. 5. DTP = Depth to product (in feet) from top of well casing. 6. Product thickness is measured in feet. 7. DTW/DTP BGS = Depth to water/depth to product below ground surface in feet. 8. GW Elevation = Ground water elevation (adjusted for product) in feet. 9. A zero ("0.00") in the product thickness column indicates no measureable thickness. 10. Stick up values were not available for wells with no values in the STICK UP and DTW/DTP BGS columns. 11. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Well No TYPE STICKUPTOC 8/20/2019Date Measured: Product Thickness DTW/DTP BGSDTW/DTP Corrected GW Elevation -0.4327.86T-II74GW23 0.00 8.728.29 19.57 -0.2628.06T-III74GW24 0.00 8.848.58 19.48 -0.4023.85T-II74GW25 0.00 9.048.64 15.21 0.0023.52T-III74GW27 0.00 7.217.21 16.31 0.0023.64T-III74GW28 0.00 7.347.34 16.30 -0.5025.79T-II74GW29 0.00 8.878.37 17.42 Page 2 Notes: 1. T-l = Type l monitoring well T-II = Type II monitoring well T-III = Type III monitoring well RW = Recovery well 2. TOC = Top of well casing elevation, in feet relative to Mean Sea Level. 3. STICK UP = Height of well casing above land surface in feet. 4. DTW = Depth to water (in feet) from top of well casing. 5. DTP = Depth to product (in feet) from top of well casing. 6. Product thickness is measured in feet. 7. DTW/DTP BGS = Depth to water/depth to product below ground surface in feet. 8. GW Elevation = Ground water elevation (adjusted for product) in feet. 9. A zero ("0.00") in the product thickness column indicates no measureable thickness. 10. Stick up values were not available for wells with no values in the STICK UP and DTW/DTP BGS columns. 11. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) FIELD MEASUREMENTS - FOURTH QUARTER 2019 SITE 3996 TABLE 6.1B Well No TYPE STICKUPTOC 11/5/2019Date Measured: Product Thickness DTW/DTP BGSDTW/DTP Corrected GW Elevation -0.3524.25T-II72GW31 0.00 7.096.74 17.51 -0.3824.17T-III72GW32 0.00 9.258.87 15.30 -0.3123.54T-II72GW33 0.00 8.408.09 15.45 -0.3326.30T-II72GW34 0.00 11.0910.76 15.54 -0.2625.49T-II72GW35 0.00 11.1110.85 14.64 -0.3028.23T-II72GW52A 0.00 9.339.03 19.20 -0.2728.28T-III72GW53A 0.00 9.549.27 19.01 -0.1823.81T-II72GW62 0.00 9.419.23 14.58 -0.1923.79T-III72GW63 0.00 9.509.31 14.48 -0.2924.23T-II74GW01 0.00 8.378.08 16.15 -0.4424.15T-III74GW02 0.00 8.628.18 15.97 -0.3926.70T-II74GW03 0.00 11.0610.67 16.03 0.0025.93T-II74GW04 0.00 9.529.52 16.41 -0.3025.66T-II74GW05 0.00 9.889.58 16.08 -0.3025.40T-III74GW06 0.00 9.018.71 16.69 -0.2725.41T-II74GW07 0.00 9.539.26 16.15 -0.3425.48T-II74GW08 0.00 9.699.35 16.13 -0.3325.68T-II74GW09 0.00 9.869.53 16.15 -0.3725.49T-II74GW10 0.00 9.789.41 16.08 -0.3825.69T-II74GW11 0.00 9.859.47 16.22 -0.4025.54T-II74GW12 0.00 9.749.34 16.20 -0.3625.64T-II74GW13 0.00 9.819.45 16.19 -0.4124.72T-II74GW14 0.00 9.449.03 15.69 -0.2925.64T-II74GW15 0.00 9.979.68 15.96 -0.2723.90T-II74GW16 0.00 7.287.01 16.89 -0.3625.41T-II74GW17 0.00 9.549.18 16.23 -0.3826.96T-II74GW18 0.00 11.1610.78 16.18 -0.4124.06T-II74GW19 0.00 8.458.04 16.02 -0.3124.33T-III74GW20 0.00 8.638.32 16.01 -0.3623.39T-III74GW22 0.00 7.557.19 16.20 -0.4327.86T-II74GW23 0.00 9.028.59 19.27 Page 1 Notes: 1. T-l = Type l monitoring well T-II = Type II monitoring well T-III = Type III monitoring well RW = Recovery well 2. TOC = Top of well casing elevation, in feet relative to Mean Sea Level. 3. STICK UP = Height of well casing above land surface in feet. 4. DTW = Depth to water (in feet) from top of well casing. 5. DTP = Depth to product (in feet) from top of well casing. 6. Product thickness is measured in feet. 7. DTW/DTP BGS = Depth to water/depth to product below ground surface in feet. 8. GW Elevation = Ground water elevation (adjusted for product) in feet. 9. A zero ("0.00") in the product thickness column indicates no measureable thickness. 10. Stick up values were not available for wells with no values in the STICK UP and DTW/DTP BGS columns. 11. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Well No TYPE STICKUPTOC 11/5/2019Date Measured: Product Thickness DTW/DTP BGSDTW/DTP Corrected GW Elevation -0.2628.06T-III74GW24 0.00 9.188.92 19.14 -0.4023.85T-II74GW25 0.00 9.539.13 14.72 0.0023.52T-III74GW27 0.00 7.447.44 16.08 0.0023.64T-III74GW28 0.00 7.577.57 16.07 -0.5025.79T-II74GW29 0.00 9.198.69 17.10 Page 2 Notes: 1. T-l = Type l monitoring well T-II = Type II monitoring well T-III = Type III monitoring well RW = Recovery well 2. TOC = Top of well casing elevation, in feet relative to Mean Sea Level. 3. STICK UP = Height of well casing above land surface in feet. 4. DTW = Depth to water (in feet) from top of well casing. 5. DTP = Depth to product (in feet) from top of well casing. 6. Product thickness is measured in feet. 7. DTW/DTP BGS = Depth to water/depth to product below ground surface in feet. 8. GW Elevation = Ground water elevation (adjusted for product) in feet. 9. A zero ("0.00") in the product thickness column indicates no measureable thickness. 10. Stick up values were not available for wells with no values in the STICK UP and DTW/DTP BGS columns. 11. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 18.22NMT72GW31 2/21/2019 24.25 -0.35 6.03 6.38 18.35NMT72GW31 5/7/2019 24.25 -0.35 5.9 6.25 17.82NMT72GW31 8/20/2019 24.25 -0.35 6.43 6.78 17.51NMT72GW31 11/5/2019 24.25 -0.35 6.74 7.09 16.30NMT72GW32 2/21/2019 24.17 -0.38 7.87 8.25 15.80NMT72GW32 5/7/2019 24.17 -0.38 8.37 8.75 15.57NMT72GW32 8/20/2019 24.17 -0.38 8.6 8.98 15.30NMT72GW32 11/5/2019 24.17 -0.38 8.87 9.25 16.57NMT72GW33 2/21/2019 23.54 -0.31 6.97 7.28 16.00NMT72GW33 5/7/2019 23.54 -0.31 7.54 7.85 15.81NMT72GW33 8/20/2019 23.54 -0.31 7.73 8.04 15.45NMT72GW33 11/5/2019 23.54 -0.31 8.09 8.40 17.57NMT72GW34 1/2/2019 26.3 -0.33 8.73 9.06 16.98NMT72GW34 2/21/2019 26.3 -0.33 9.32 9.65 16.85NMT72GW34 3/6/2019 26.3 -0.33 9.45 9.78 16.29NMT72GW34 4/1/2019 26.3 -0.33 10.01 10.34 16.10NMT72GW34 5/7/2019 26.3 -0.33 10.2 10.53 15.99NMT72GW34 6/10/2019 26.3 -0.33 10.31 10.64 15.79NMT72GW34 7/3/2019 26.3 -0.33 10.51 10.84 16.02NMT72GW34 8/20/2019 26.3 -0.33 10.28 10.61 16.37NMT72GW34 9/16/2019 26.3 -0.33 9.93 10.26 16.02NMT72GW34 10/2/2019 26.3 -0.33 10.28 10.61 15.54NMT72GW34 11/5/2019 26.3 -0.33 10.76 11.09 15.71NMT72GW34 12/3/2019 26.3 -0.33 10.59 10.92 16.00NMT72GW35 2/21/2019 25.49 -0.26 9.49 9.75 15.22NMT72GW35 5/7/2019 25.49 -0.26 10.27 10.53 15.11NMT72GW35 8/20/2019 25.49 -0.26 10.38 10.64 14.64NMT72GW35 11/5/2019 25.49 -0.26 10.85 11.11 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 1BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 20.27NMT72GW52A 2/21/2019 28.23 -0.3 7.96 8.26 19.77NMT72GW52A 5/7/2019 28.23 -0.3 8.46 8.76 19.46NMT72GW52A 8/20/2019 28.23 -0.3 8.77 9.07 19.20NMT72GW52A 11/5/2019 28.23 -0.3 9.03 9.33 20.27NMT72GW53A 2/21/2019 28.28 -0.27 8.01 8.28 19.83NMT72GW53A 5/7/2019 28.28 -0.27 8.45 8.72 19.47NMT72GW53A 8/20/2019 28.28 -0.27 8.81 9.08 19.01NMT72GW53A 11/5/2019 28.28 -0.27 9.27 9.54 15.67NMT72GW62 2/21/2019 23.81 -0.18 8.14 8.32 15.12NMT72GW62 5/7/2019 23.81 -0.18 8.69 8.87 14.82NMT72GW62 8/20/2019 23.81 -0.18 8.99 9.17 14.58NMT72GW62 11/5/2019 23.81 -0.18 9.23 9.41 15.62NMT72GW63 2/21/2019 23.79 -0.19 8.17 8.36 15.03NMT72GW63 5/7/2019 23.79 -0.19 8.76 8.95 14.86NMT72GW63 8/20/2019 23.79 -0.19 8.93 9.12 14.48NMT72GW63 11/5/2019 23.79 -0.19 9.31 9.50 17.27NMT74GW01 2/21/2019 24.23 -0.29 6.96 7.25 16.67NMT74GW01 5/7/2019 24.23 -0.29 7.56 7.85 16.58NMT74GW01 8/20/2019 24.23 -0.29 7.65 7.94 16.15NMT74GW01 11/5/2019 24.23 -0.29 8.08 8.37 17.08NMT74GW02 2/21/2019 24.15 -0.44 7.07 7.51 16.46NMT74GW02 5/7/2019 24.15 -0.44 7.69 8.13 16.36NMT74GW02 8/20/2019 24.15 -0.44 7.79 8.23 15.97NMT74GW02 11/5/2019 24.15 -0.44 8.18 8.62 17.14NMT74GW03 2/21/2019 26.7 -0.39 9.56 9.95 16.62NMT74GW03 5/7/2019 26.7 -0.39 10.08 10.47 16.42NMT74GW03 8/20/2019 26.7 -0.39 10.28 10.67 16.03NMT74GW03 11/5/2019 26.7 -0.39 10.67 11.06 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 2BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 17.50NMT74GW04 2/21/2019 25.93 0 8.43 8.43 16.96NMT74GW04 5/7/2019 25.93 0 8.97 8.97 16.79NMT74GW04 8/20/2019 25.93 0 9.14 9.14 16.41NMT74GW04 11/5/2019 25.93 0 9.52 9.52 17.18NMT74GW05 2/21/2019 25.66 -0.3 8.48 8.78 16.60NMT74GW05 5/7/2019 25.66 -0.3 9.06 9.36 16.47NMT74GW05 8/20/2019 25.66 -0.3 9.19 9.49 16.08NMT74GW05 11/5/2019 25.66 -0.3 9.58 9.88 17.76NMT74GW06 2/21/2019 25.4 -0.3 7.64 7.94 17.21NMT74GW06 5/7/2019 25.4 -0.3 8.19 8.49 16.71NMT74GW06 8/20/2019 25.4 -0.3 8.69 8.99 16.69NMT74GW06 11/5/2019 25.4 -0.3 8.71 9.01 17.22NMT74GW07 2/21/2019 25.41 -0.27 8.19 8.46 16.69NMT74GW07 5/7/2019 25.41 -0.27 8.72 8.99 16.61NMT74GW07 8/20/2019 25.41 -0.27 8.8 9.07 16.15NMT74GW07 11/5/2019 25.41 -0.27 9.26 9.53 17.17NMT74GW08 2/21/2019 25.48 -0.34 8.31 8.65 16.63NMT74GW08 5/7/2019 25.48 -0.34 8.85 9.19 16.49NMT74GW08 8/20/2019 25.48 -0.34 8.99 9.33 16.13NMT74GW08 11/5/2019 25.48 -0.34 9.35 9.69 17.23NMT74GW09 2/21/2019 25.68 -0.33 8.45 8.78 16.70NMT74GW09 5/7/2019 25.68 -0.33 8.98 9.31 16.71NMT74GW09 8/20/2019 25.68 -0.33 8.97 9.30 16.15NMT74GW09 11/5/2019 25.68 -0.33 9.53 9.86 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 3BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 17.40NMT74GW10 1/2/2019 25.49 -0.37 8.09 8.46 17.31NMT74GW10 2/21/2019 25.49 -0.37 8.18 8.55 17.24NMT74GW10 3/6/2019 25.49 -0.37 8.25 8.62 18.35NMT74GW10 4/1/2019 25.49 -0.37 7.14 7.51 16.68NMT74GW10 5/7/2019 25.49 -0.37 8.81 9.18 16.43NMT74GW10 6/10/2019 25.49 -0.37 9.06 9.43 16.31NMT74GW10 7/3/2019 25.49 -0.37 9.18 9.55 16.49NMT74GW10 8/20/2019 25.49 -0.37 9 9.37 16.74NMT74GW10 9/16/2019 25.49 -0.37 8.75 9.12 16.51NMT74GW10 10/2/2019 25.49 -0.37 8.98 9.35 16.08NMT74GW10 11/5/2019 25.49 -0.37 9.41 9.78 16.21NMT74GW10 12/3/2019 25.49 -0.37 9.28 9.65 17.23NMT74GW11 2/21/2019 25.69 -0.38 8.46 8.84 16.70NMT74GW11 5/7/2019 25.69 -0.38 8.99 9.37 16.62NMT74GW11 8/20/2019 25.69 -0.38 9.07 9.45 16.22NMT74GW11 11/5/2019 25.69 -0.38 9.47 9.85 17.27NMT74GW12 2/21/2019 25.54 -0.4 8.27 8.67 16.71NMT74GW12 5/7/2019 25.54 -0.4 8.83 9.23 16.53NMT74GW12 8/20/2019 25.54 -0.4 9.01 9.41 16.20NMT74GW12 11/5/2019 25.54 -0.4 9.34 9.74 17.25NMT74GW13 2/21/2019 25.64 -0.36 8.39 8.75 16.82NMT74GW13 5/7/2019 25.64 -0.36 8.82 9.18 16.52NMT74GW13 8/20/2019 25.64 -0.36 9.12 9.48 16.19NMT74GW13 11/5/2019 25.64 -0.36 9.45 9.81 17.17NMT74GW14 2/21/2019 24.72 -0.41 7.55 7.96 16.24NMT74GW14 5/7/2019 24.72 -0.41 8.48 8.89 16.12NMT74GW14 8/20/2019 24.72 -0.41 8.6 9.01 15.69NMT74GW14 11/5/2019 24.72 -0.41 9.03 9.44 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 4BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 14.87NMT74GW15 1/2/2019 25.64 -0.29 10.77 11.06 17.16NMT74GW15 2/21/2019 25.64 -0.29 8.48 8.77 17.04NMT74GW15 3/6/2019 25.64 -0.29 8.6 8.89 16.60NMT74GW15 4/1/2019 25.64 -0.29 9.04 9.33 16.48NMT74GW15 5/7/2019 25.64 -0.29 9.16 9.45 16.28NMT74GW15 6/10/2019 25.64 -0.29 9.36 9.65 16.12NMT74GW15 7/3/2019 25.64 -0.29 9.52 9.81 16.41NMT74GW15 8/20/2019 25.64 -0.29 9.23 9.52 16.67NMT74GW15 9/16/2019 25.64 -0.29 8.97 9.26 16.35NMT74GW15 10/2/2019 25.64 -0.29 9.29 9.58 15.96NMT74GW15 11/5/2019 25.64 -0.29 9.68 9.97 16.04NMT74GW15 12/3/2019 25.64 -0.29 9.6 9.89 16.83NMT74GW16 1/2/2019 23.9 -0.27 7.07 7.34 17.19NMT74GW16 2/21/2019 23.9 -0.27 6.71 6.98 17.18NMT74GW16 3/6/2019 23.9 -0.27 6.72 6.99 15.24NMT74GW16 4/1/2019 23.9 -0.27 8.66 8.93 16.63NMT74GW16 5/7/2019 23.9 -0.27 7.27 7.54 16.40NMT74GW16 6/10/2019 23.9 -0.27 7.5 7.77 16.27NMT74GW16 7/3/2019 23.9 -0.27 7.63 7.90 16.47NMT74GW16 8/20/2019 23.9 -0.27 7.43 7.70 15.77NMT74GW16 9/16/2019 23.9 -0.27 8.13 8.40 16.49NMT74GW16 10/2/2019 23.9 -0.27 7.41 7.68 16.89NMT74GW16 11/5/2019 23.9 -0.27 7.01 7.28 16.17NMT74GW16 12/3/2019 23.9 -0.27 7.73 8.00 17.25NMT74GW17 2/21/2019 25.41 -0.36 8.16 8.52 16.69NMT74GW17 5/7/2019 25.41 -0.36 8.72 9.08 16.47NMT74GW17 8/20/2019 25.41 -0.36 8.94 9.30 16.23NMT74GW17 11/5/2019 25.41 -0.36 9.18 9.54 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 5BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 17.19NMT74GW18 2/21/2019 26.96 -0.38 9.77 10.15 16.70NMT74GW18 5/7/2019 26.96 -0.38 10.26 10.64 16.44NMT74GW18 8/20/2019 26.96 -0.38 10.52 10.90 16.18NMT74GW18 11/5/2019 26.96 -0.38 10.78 11.16 17.33NMT74GW19 2/21/2019 24.06 -0.41 6.73 7.14 16.68NMT74GW19 5/7/2019 24.06 -0.41 7.38 7.79 16.49NMT74GW19 8/20/2019 24.06 -0.41 7.57 7.98 16.02NMT74GW19 11/5/2019 24.06 -0.41 8.04 8.45 17.15NMT74GW20 2/21/2019 24.33 -0.31 7.18 7.49 16.60NMT74GW20 5/7/2019 24.33 -0.31 7.73 8.04 16.45NMT74GW20 8/20/2019 24.33 -0.31 7.88 8.19 16.01NMT74GW20 11/5/2019 24.33 -0.31 8.32 8.63 17.12NMT74GW21 2/21/2019 23.4 -0.4 6.28 6.68 16.72NMT74GW21 5/7/2019 23.4 -0.4 6.68 7.08 16.46NMT74GW21 8/20/2019 23.4 -0.4 6.94 7.34 17.20NMT74GW22 2/21/2019 23.39 -0.36 6.19 6.55 16.69NMT74GW22 5/7/2019 23.39 -0.36 6.7 7.06 16.43NMT74GW22 8/20/2019 23.39 -0.36 6.96 7.32 16.20NMT74GW22 11/5/2019 23.39 -0.36 7.19 7.55 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 6BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 19.53NMT74GW23 1/2/2019 27.86 -0.43 8.33 8.76 20.33NMT74GW23 2/21/2019 27.86 -0.43 7.53 7.96 20.26NMT74GW23 3/6/2019 27.86 -0.43 7.6 8.03 19.88NMT74GW23 4/1/2019 27.86 -0.43 7.98 8.41 19.77NMT74GW23 5/7/2019 27.86 -0.43 8.09 8.52 19.55NMT74GW23 6/10/2019 27.86 -0.43 8.31 8.74 19.43NMT74GW23 7/3/2019 27.86 -0.43 8.43 8.86 19.57NMT74GW23 8/20/2019 27.86 -0.43 8.29 8.72 19.87NMT74GW23 9/16/2019 27.86 -0.43 7.99 8.42 19.61NMT74GW23 10/2/2019 27.86 -0.43 8.25 8.68 19.27NMT74GW23 11/5/2019 27.86 -0.43 8.59 9.02 19.31NMT74GW23 12/3/2019 27.86 -0.43 8.55 8.98 19.14NMT74GW24 1/2/2019 28.06 -0.26 8.92 9.18 20.33NMT74GW24 2/21/2019 28.06 -0.26 7.73 7.99 20.25NMT74GW24 3/6/2019 28.06 -0.26 7.81 8.07 19.86NMT74GW24 4/1/2019 28.06 -0.26 8.2 8.46 19.73NMT74GW24 5/7/2019 28.06 -0.26 8.33 8.59 19.51NMT74GW24 6/10/2019 28.06 -0.26 8.55 8.81 19.36NMT74GW24 7/3/2019 28.06 -0.26 8.7 8.96 19.48NMT74GW24 8/20/2019 28.06 -0.26 8.58 8.84 19.85NMT74GW24 9/16/2019 28.06 -0.26 8.21 8.47 19.57NMT74GW24 10/2/2019 28.06 -0.26 8.49 8.75 19.14NMT74GW24 11/5/2019 28.06 -0.26 8.92 9.18 19.29NMT74GW24 12/3/2019 28.06 -0.26 8.77 9.03 15.91NMT74GW25 2/21/2019 23.85 -0.4 7.94 8.34 15.30NMT74GW25 5/7/2019 23.85 -0.4 8.55 8.95 15.21NMT74GW25 8/20/2019 23.85 -0.4 8.64 9.04 14.72NMT74GW25 11/5/2019 23.85 -0.4 9.13 9.53 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 7BOLD ITALICS TABLE 6.1C SITE 3996 HISTORICAL FIELD MEASUREMENT DATA Well ID Date Corrected GWT ElevationProduct ThicknessTOCStickupDTW/DTP DTW/DTP BGS 17.17NMT74GW27 2/21/2019 23.52 0 6.35 6.35 16.68NMT74GW27 5/7/2019 23.52 0 6.84 6.84 16.31NMT74GW27 8/20/2019 23.52 0 7.21 7.21 16.08NMT74GW27 11/5/2019 23.52 0 7.44 7.44 17.31NMT74GW28 2/21/2019 23.64 0 6.33 6.33 16.56NMT74GW28 5/7/2019 23.64 0 7.08 7.08 16.30NMT74GW28 8/20/2019 23.64 0 7.34 7.34 16.07NMT74GW28 11/5/2019 23.64 0 7.57 7.57 18.15NMT74GW29 2/21/2019 25.79 -0.5 7.64 8.14 17.66NMT74GW29 5/7/2019 25.79 -0.5 8.13 8.63 17.42NMT74GW29 8/20/2019 25.79 -0.5 8.37 8.87 17.10NMT74GW29 11/5/2019 25.79 -0.5 8.69 9.19 Notes: 1. NMT = No Measurable Thickness 2. NM = Not Measured 3. Data in BOLD ITALICS indicates measurable thicknesses of product detected 4. TBM = To Be Measured 5. Corrected GW Elevation based on Specific Gravity of JP-5 (0.82) Page 8BOLD ITALICS STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2A 8/20/2019Date Sampled: SM 6200B (THIRD QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Equip_ Rinsate1,1,1,2-Tetrachloroethane 1,000.00001.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1,1-Trichloroethane 200,000.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1,2,2-Tetrachloroethane 200.00000.2000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1,2-Trichloroethane 600.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1-Dichloroethane 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 249 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1-Dichloroethene 350,000.0000350.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,1-Dichloropropene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2,3-Trichlorobenzene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2,3-Trichloropropane 0.00000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2,4-Trichlorobenzene 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2,4-Trimethylbenzene 28,500.0000400.0000 0.00 0.00 3.11 0.00 0.00 0.00 39.7 0.00 204 0.00 0.00 0.00ug/L 0.00 1,2-Dibromo-3-chloropropane 0.00000.0400 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2-Dibromoethane (EDB)50.00000.0200 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2-Dichlorobenzene 20,000.000020.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2-Dichloroethane 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,2-Dichloropropane 600.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,3,5-Trimethylbenzene 25,000.0000400.0000 0.00 0.00 0.00 0.00 0.00 0.00 15.6 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,3-Dichlorobenzene 61,500.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,3-Dichloropropane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 1,4-Dichlorobenzene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 2,2-Dichloropropane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 2-Chlorotoluene 0.0000100.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Page 1 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2A 8/20/2019Date Sampled: SM 6200B (THIRD QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Equip_ Rinsate4-Chlorotoluene 7,500.000024.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzene 5,000.00001.0000 0.00 0.00 3.89 0.00 0.00 0.00 5.35 0.00 4,600 0.00 0.00 0.00ug/L 0.00 Bromobenzene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Bromochloromethane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Bromodichloromethane 0.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Bromoform 4,000.00004.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Bromomethane 10,000.000010.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Carbon tetrachloride 0.00000.3000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chlorobenzene 50,000.000050.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chloroethane 0.00003,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 6.2 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chloroform 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chloromethane 3,000.00003.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 cis-1,2-Dichloroethene 70,000.000070.0000 0.00 0.00 1.02 1.09 0.00 0.00 22.1 0.00 0.00 0.00 0.00 0.00ug/L 0.00 cis-1,3-Dichloropropene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Dibromochloromethane 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Dibromomethane 0.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Dichlorodifluoromethane 140,000.00001,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Diisopropyl ether (DIPE)70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Ethylbenzene 84,500.0000600.0000 0.00 0.00 4.95 0.00 0.00 0.00 9.85 0.00 345 0.00 0.00 0.00ug/L 0.00 Hexachlorobutadiene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Isopropylbenzene 25,000.000070.0000 38.8 0.00 30 0.00 0.00 0.00 11.1 0.00 533 0.00 0.00 0.00ug/L 0.00 Methylene chloride 5,000.00005.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Page 2 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2A 8/20/2019Date Sampled: SM 6200B (THIRD QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Equip_ RinsateMethyl-tert butyl ether (MTBE)20,000.000020.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Naphthalene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 46.8 0.00 0.00 0.00 0.00 0.00ug/L 0.00 n-Butylbenzene 6,900.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 n-Propyl benzene 30,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 sec-Butylbenzene 8,500.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Styrene 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 tert-Butylbenzene 15,000.000070.0000 1.63 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Tetrachloroethene 700.00000.7000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Toluene 260,000.0000600.0000 0.00 0.00 1.39 0.00 0.00 0.00 0.00 0.00 1,280 0.00 0.00 0.00ug/L 0.00 Total Xylenes 85,500.0000500.0000 0.00 0.00 10.7 0.00 0.00 0.00 26 0.00 1,560 0.00 0.00 0.00ug/L 0.00 trans-1,2-dichloroethene 100,000.0000100.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 trans-1,3-Dichloropropene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Trichloroethene 3,000.00003.0000 0.00 0.00 5.38 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.98ug/L 0.00 Trichlorofluoromethane 2,000,000.00002,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Vinyl chloride 30.00000.0300 0.00 0.00 0.00 0.00 0.00 0.00 11.5 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Totals:40.43 0.00 60.44 1.09 0.00 0.00 443.2 0.00 8,522 0.00 0.00 4.98 0.00 Page 3 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2B 11/5/2019Date Sampled: SM 6200B (FOURTH QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Trip BlankEquip_ Rinsate1,1,1,2-Tetrachloroethane 1,000.00001.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1,1-Trichloroethane 200,000.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1,2,2-Tetrachloroethane 200.00000.2000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1,2-Trichloroethane 600.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1-Dichloroethane 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 260 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1-Dichloroethene 350,000.0000350.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,1-Dichloropropene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2,3-Trichlorobenzene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2,3-Trichloropropane 0.00000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2,4-Trichlorobenzene 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2,4-Trimethylbenzene 28,500.0000400.0000 0.00 0.00 8.3 0.00 0.00 0.00 19.5 0.00 143 0.00 0.00 0.00ug/L 0.00 0.00 1,2-Dibromo-3-chloropropane 0.00000.0400 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2-Dibromoethane (EDB)50.00000.0200 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2-Dichlorobenzene 20,000.000020.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2-Dichloroethane 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,2-Dichloropropane 600.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,3,5-Trimethylbenzene 25,000.0000400.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,3-Dichlorobenzene 61,500.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,3-Dichloropropane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 1,4-Dichlorobenzene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 2,2-Dichloropropane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 2-Chlorotoluene 0.0000100.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Page 1 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2B 11/5/2019Date Sampled: SM 6200B (FOURTH QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Trip BlankEquip_ Rinsate4-Chlorotoluene 7,500.000024.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Benzene 5,000.00001.0000 0.00 0.00 8.64 0.00 0.00 0.00 5.7 0.00 2,760 0.00 0.00 0.00ug/L 0.00 0.00 Bromobenzene 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Bromochloromethane 0.00000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Bromodichloromethane 0.00000.6000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Bromoform 4,000.00004.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Bromomethane 10,000.000010.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Carbon tetrachloride 0.00000.3000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Chlorobenzene 50,000.000050.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Chloroethane 0.00003,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Chloroform 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Chloromethane 3,000.00003.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 cis-1,2-Dichloroethene 70,000.000070.0000 0.00 0.00 1.22 1.31 0.00 0.00 15.9 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 cis-1,3-Dichloropropene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Dibromochloromethane 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Dibromomethane 0.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Dichlorodifluoromethane 140,000.00001,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Diisopropyl ether (DIPE)70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Ethylbenzene 84,500.0000600.0000 0.00 0.00 16.3 0.00 0.00 0.00 5 0.00 216 0.00 0.00 0.00ug/L 0.00 0.00 Hexachlorobutadiene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Isopropylbenzene 25,000.000070.0000 83.5 0.00 138 0.00 0.00 0.00 0.00 0.00 441 0.00 0.00 0.00ug/L 0.00 0.00 Methylene chloride 5,000.00005.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Page 2 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2B 11/5/2019Date Sampled: SM 6200B (FOURTH QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Trip BlankEquip_ RinsateMethyl-tert butyl ether (MTBE)20,000.000020.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Naphthalene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 40.4 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 n-Butylbenzene 6,900.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 n-Propyl benzene 30,000.000070.0000 0.00 0.00 1.75 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 sec-Butylbenzene 8,500.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Styrene 70,000.000070.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 tert-Butylbenzene 15,000.000070.0000 2.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Tetrachloroethene 700.00000.7000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Toluene 260,000.0000600.0000 0.00 0.00 24.4 0.00 0.00 0.00 0.00 0.00 1,200 0.00 0.00 0.00ug/L 0.00 0.00 Total Xylenes 85,500.0000500.0000 0.00 0.00 80.7 0.00 0.00 0.00 16.2 0.00 1,360 0.00 0.00 0.00ug/L 0.00 0.00 trans-1,2-dichloroethene 100,000.0000100.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 trans-1,3-Dichloropropene 400.00000.4000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Trichloroethene 3,000.00003.0000 0.00 0.00 5 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.21ug/L 0.00 0.00 Trichlorofluoromethane 2,000,000.00002,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Vinyl chloride 30.00000.0300 0.00 0.00 0.00 0.00 0.00 0.00 24.5 0.00 0.00 0.00 0.00 0.00ug/L 0.00 0.00 Totals:85.69 0.00 284.31 1.31 0.00 0.00 387.2 0.00 6,120 0.00 0.00 5.21 0.00 0.00 Page 3 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.04 6.3 BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 53.3 BQL BQL72GW33 BQL BQL BQL 1.64 BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 66.6 BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 33.4 BQL BQL72GW33 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 38.8 BQL BQL72GW33 BQL BQL BQL 1.63 BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 83.5 BQL BQL72GW33 BQL BQL BQL 2.19 BQL BQL BQL BQL BQL BQL 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL 1.02 BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL 1.84 BQL BQL BQL BQL BQL BQL 1.01 BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 1 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 BQL BQL BQL BQL BQL BQL BQL 1.08 BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 BQL 1 BQL BQL 2.12 BQL BQL BQL 1.23 BQL 2.25 12.8 0.58 BQL72GW52A BQL BQL BQL BQL BQL 2.82 6.02 BQL BQL BQL 8/18/2015 BQL BQL BQL BQL 2.04 BQL BQL BQL 1.1 BQL BQL 16.6 BQL BQL72GW52A BQL BQL BQL BQL BQL BQL 4.73 BQL BQL BQL 8/16/2016 BQL BQL BQL BQL 2.3 BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A BQL BQL BQL BQL BQL BQL 4.11 BQL BQL BQL 8/15/2017 BQL BQL BQL BQL 3.82 BQL BQL BQL 1.04 BQL BQL 54 BQL BQL72GW52A 1.05 BQL BQL BQL BQL BQL 4.57 BQL BQL BQL 8/14/2018 BQL BQL BQL BQL 13.1 BQL BQL BQL 1.06 BQL 7.21 59.7 1.24 BQL72GW52A BQL BQL BQL BQL 8.88 15.5 3.71 BQL BQL BQL 2/21/2019 BQL 1.69 BQL BQL 8.91 BQL BQL BQL 1.06 BQL BQL 12.3 BQL BQL72GW52A BQL BQL BQL BQL BQL BQL 4.35 BQL BQL BQL 5/7/2019 BQL 3.2 BQL BQL 11.7 BQL BQL BQL BQL BQL 4.8 33.6 BQL BQL72GW52A BQL BQL BQL BQL 3.4 14.5 3.97 BQL BQL BQL 8/20/2019 BQL 3.11 BQL BQL 3.89 BQL BQL BQL 1.02 BQL 4.95 30 BQL BQL72GW52A BQL BQL BQL BQL 1.39 10.7 5.38 BQL BQL BQL 11/5/2019 BQL 8.3 BQL BQL 8.64 BQL BQL BQL 1.22 BQL 16.3 138 BQL BQL72GW52A 1.75 BQL BQL BQL 24.4 80.7 5 BQL BQL BQL 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW53A BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 2 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 15.2 BQL BQL BQL 1.49 BQL BQL BQL 3.34 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 9.05 BQL BQL BQL 1.15 BQL BQL BQL 2.32 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 4.36 BQL BQL BQL BQL BQL BQL BQL 1.54 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 1.9 BQL BQL BQL 1.05 BQL BQL BQL 1.81 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL 1.71 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL 1.18 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL 1.2 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL 1.09 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL 1.31 BQL BQL BQL BQL BQL72GW62 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW63 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL 1.35 BQL BQL BQL BQL BQL74GW01 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL 2.05 BQL BQL BQL BQL BQL74GW01 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 3 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10Dup BQL 0.33 BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 BQL BQL BQL BQL BQL 1.43 BQL 11.4 BQL BQL BQL BQL BQL BQL74GW14 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL 2.41 BQL 28.5 BQL BQL BQL BQL BQL BQL74GW14 BQL BQL BQL BQL 1.11 BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL 12.5 BQL BQL BQL BQL BQL BQL74GW14 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL 34.2 BQL BQL BQL BQL BQL BQL74GW14 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 4 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 7.67 BQL BQL74GW15 0.34 BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL 1.14 BQL BQL 1.55 BQL BQL BQL BQL BQL 1.04 47.6 6.37 BQL74GW15 1.88 1.42 BQL 1.02 BQL BQL BQL BQL BQL BQL 8/16/2016 7.04 BQL BQL BQL 4.26 BQL BQL BQL 1.37 BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL 2.46 BQL BQL BQL BQL BQL 8/15/2017 1.02 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 46.4 116 BQL 29.8 10.6 BQL 6.53 BQL 2.38 BQL 51.9 16.4 394 BQL74GW16 10.4 5.13 1.29 2.13 28 106 BQL BQL 37.4 BQL 3/10/2015 33.2 64.5 BQL BQL 4.85 BQL 3.05 BQL BQL BQL 26.7 10.2 294 BQL74GW16 6.05 3.6 BQL 1.65 11.4 37.4 BQL BQL 12.5 BQL 8/18/2015 61.8 94.7 BQL 21.9 8.17 BQL 5.49 BQL BQL 15.6 49.3 21.3 371 BQL74GW16 11.3 5.34 BQL 2.2 17.1 64.3 BQL BQL 18.8 BQL 8/16/2016 119 99.4 BQL 20.5 8.75 BQL 8.5 BQL BQL BQL 76.6 46.8 436 BQL74GW16 14.1 5.65 BQL BQL 25.1 76.7 BQL BQL 48.5 BQL 8/15/2017 64.6 13.4 BQL 2.56 3.44 BQL 10.4 BQL 1.43 BQL 18 12.6 52.7 BQL74GW16 3.88 2.51 BQL 1.78 5.2 15.6 BQL BQL 12 BQL 8/14/2018 88.1 64.5 BQL 31.7 3.32 BQL 5.93 BQL 2.09 BQL 17.4 13.2 92.5 BQL74GW16 4.12 2.6 BQL BQL 2.59 29.1 BQL BQL 2.36 BQL 2/21/2019 309 54 BQL 20.1 5.22 BQL 6.82 BQL 29.2 BQL 13.8 16 72.6 3.5674GW16 5.02 3.36 BQL BQL 5.66 25.5 BQL BQL BQL BQL 5/7/2019 175 41.5 BQL 15.4 BQL BQL 6 BQL 11.6 BQL 9.65 12.6 53.6 BQL74GW16 BQL BQL BQL BQL BQL 21.2 BQL BQL 7.5 BQL 8/20/2019 249 39.7 BQL 15.6 5.35 BQL 6.2 BQL 22.1 BQL 9.85 11.1 46.8 BQL74GW16 BQL BQL BQL BQL BQL 26 BQL BQL 11.5 BQL 11/5/2019 260 19.5 BQL BQL 5.7 BQL BQL BQL 15.9 BQL 5 BQL 40.4 BQL74GW16 BQL BQL BQL BQL BQL 16.2 BQL BQL 24.5 BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 5 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 6 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL 126 BQL 47.6 6,820 BQL BQL BQL 21.9 BQL 566 801 1.71 BQL74GW23 14.2 0.75 BQL BQL 7,000 2,950 10.7 BQL BQL BQL 3/10/2015 BQL 141 BQL BQL 8,620 BQL BQL BQL BQL BQL 565 709 BQL BQL74GW23 BQL BQL BQL BQL 9,330 3,240 BQL BQL BQL BQL 8/18/2015 BQL 202 BQL 98.8 10,900 BQL BQL BQL 15.2 BQL 518 878 BQL BQL74GW23 27.4 1.29 BQL BQL 10,700 4,230 4.37 BQL BQL BQL 2/11/2016 BQL 161 BQL BQL 4,590 BQL BQL BQL 3.35 BQL 491 619 1.33 3.0674GW23 15.2 BQL BQL 1.15 5,780 3,030 1.84 BQL BQL BQL 8/16/2016 BQL BQL BQL BQL 9,310 BQL BQL BQL BQL BQL 460 478 BQL BQL74GW23 BQL BQL BQL BQL 8,900 3,160 BQL BQL BQL BQL 2/13/2017 BQL 338 BQL BQL 11,200 BQL BQL BQL BQL BQL 404 528 BQL BQL74GW23 BQL BQL BQL BQL 12,100 7,070 BQL BQL BQL BQL 2/13/2017 BQL 348 BQL BQL 10,400 BQL BQL BQL BQL BQL 394 520 BQL BQL74GW23Dup BQL BQL BQL BQL 11,300 6,850 BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL 3,700 BQL BQL BQL BQL BQL 220 346 BQL BQL74GW23 BQL BQL BQL BQL 5,270 4,850 BQL BQL BQL BQL 2/16/2018 BQL 252 BQL BQL 4,900 BQL BQL BQL BQL BQL 547 895 BQL BQL74GW23 BQL BQL BQL BQL 3,650 2,200 BQL BQL BQL BQL 2/16/2018 BQL 243 BQL 119 3,640 BQL BQL BQL BQL BQL 442 773 BQL BQL74GW23Dup BQL BQL BQL BQL 2,730 1,950 BQL BQL BQL BQL 8/14/2018 BQL 48.3 BQL 25.4 137 BQL BQL BQL BQL BQL 45 134 BQL BQL74GW23 3.5 BQL BQL BQL 113 254 BQL BQL BQL BQL 11/13/2018 BQL 123 BQL 84.5 229 BQL BQL BQL BQL BQL 109 283 BQL BQL74GW23 7.35 BQL BQL BQL 197 703 BQL BQL BQL BQL 2/21/2019 BQL 74.5 8.9 46.2 287 BQL BQL BQL BQL BQL 62.1 162 BQL BQL74GW23 BQL BQL BQL BQL 177 604 BQL BQL BQL BQL 5/7/2019 BQL 107 BQL 58.3 836 BQL BQL BQL BQL BQL 106 247 BQL BQL74GW23 BQL BQL BQL BQL 496 834 BQL BQL BQL BQL 8/20/2019 BQL 204 BQL BQL 4,600 BQL BQL BQL BQL BQL 345 533 BQL BQL74GW23 BQL BQL BQL BQL 1,280 1,560 BQL BQL BQL BQL 11/5/2019 BQL 143 BQL BQL 2,760 BQL BQL BQL BQL BQL 216 441 BQL BQL74GW23 BQL BQL BQL BQL 1,200 1,360 BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 7 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL 0.44 BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL 0.4 BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/11/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/11/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 8 9. Well nomenclature in RED indicates the well has been abandoned 1,1-Dichloroethane1,2,4-Trimethylbenzene1,2-Dichloroethane1,3,5-TrimethylbenzeneBenzeneChloroethaneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.2C SM 6200B Date BromodichloromethaneSample ID Chloroformcis-1,2-DichloroetheneDichlorodifluoromethaneIsopropylbenzeneEthylbenzenen-ButylbenzeneNaphthalene6 400 0.4 400 1 0.6 3000 70 70 1000 600 70 6 702L GWQS GCL 6000 28500 400 25000 5000 0 0 70000 70000 140000 84500 25000 6000 6900 Contaminant of Concern n-Propyl benzenesec-ButylbenzeneStyrenetert-ButylbenzeneTolueneTotal XylenesTrichloroetheneTrichlorofluoromethaneVinyl chlorideAll Other Analytes70 30000 70 8500 70 70000 70 15000 600 260000 500 85500 3 3000 2000 2000000 0.03 30 GW Standard Revised/Estab. (See Table III) 8/12/2014 BQL BQL BQL BQL 1.53 BQL BQL BQL 0.99 BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.92 BQL BQL BQL 8/18/2015 BQL BQL BQL BQL 1.38 BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.61 BQL BQL BQL 8/16/2016 BQL BQL BQL BQL 1.28 BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.79 BQL BQL BQL 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.75 BQL BQL BQL 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4 BQL BQL BQL 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.6 BQL BQL BQL 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.52 BQL BQL BQL 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 4.98 BQL BQL BQL 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 BQL BQL BQL BQL BQL BQL 5.21 BQL BQL BQL Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 9 9. Well nomenclature in RED indicates the well has been abandoned STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3A 8/20/2019Date Sampled: EPA METHOD 610 BY EPA METHOD 625 (THIRD QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Equip_ Rinsate2-Methylnaphthalene 12,500.000030.0000 0.00 0.00 0.00 0.00 0.00 0.00 11.8 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Acenaphthene 2,120.000080.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Acenaphthylene 1,965.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Anthracene 2,000.00002,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(a)anthracene 4.70000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(a)pyrene 0.81000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(b)fluoranthene 0.75000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(g,h,i)perylene 200.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(k)fluoranthene 0.50000.5000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chrysene 5.00005.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Dibenzo(a,h)anthracene 1.20000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Fluoranthene 300.0000300.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Fluorene 990.0000300.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Indeno(1,2,3-c,d)pyrene 0.05000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Naphthalene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 23.2 0.00 1.13 0.00 0.00 0.00ug/L 0.00 Phenanthrene 410.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Pyrene 200.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Totals:0.00 0.00 0.00 0.00 0.00 0.00 35 0.00 1.13 0.00 0.00 0.00 0.00 Page 1 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established STANDARD GCL 72GW3372GW3472GW52A72GW6274GW1074GW1574GW1774GW2374GW2474GW24Dup74GW29GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3B 11/5/2019Date Sampled: EPA METHOD 610 BY EPA METHOD 625 (FOURTH QUARTER 2019) 2L GWQS UNITSPARAMETER 74GW16GCL Equip_ Rinsate2-Methylnaphthalene 12,500.000030.0000 0.00 0.00 0.00 0.00 0.00 0.00 15.9 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Acenaphthene 2,120.000080.0000 0.00 0.00 0.00 0.00 0.00 0.00 1.01 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Acenaphthylene 1,965.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Anthracene 2,000.00002,000.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(a)anthracene 4.70000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(a)pyrene 0.81000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(b)fluoranthene 0.75000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(g,h,i)perylene 200.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Benzo(k)fluoranthene 0.50000.5000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Chrysene 5.00005.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Dibenzo(a,h)anthracene 1.20000.0050 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Fluoranthene 300.0000300.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Fluorene 990.0000300.0000 0.00 0.00 0.00 0.00 0.00 0.00 1.01 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Indeno(1,2,3-c,d)pyrene 0.05000.0500 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Naphthalene 6,000.00006.0000 0.00 0.00 0.00 0.00 0.00 0.00 36.7 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Phenanthrene 410.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Pyrene 200.0000200.0000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00ug/L 0.00 Totals:0.00 0.00 0.00 0.00 0.00 0.00 54.62 0.00 0.00 0.00 0.00 0.00 0.00 Page 1 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. ug/L = Micrograms per Liter 4. A zero ("0.00") in the results column indicates concentration is either below detection limit or below quantitation limit 5. A zero ("0.0000") in the 2L GWQS column indicates the 2L standard is equal to the laboratory detection limit 6. A zero ("0.0000") in the GCL column indicates a GCL has not been established GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 8/12/2014 BQL 0.38 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW33 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW34 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35Dup 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW35Dup Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 1 9. Well nomenclature in RED indicates the well has been abandoned GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL 0.462 BQL BQL BQL72GW52A 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW52A 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW53A 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW62 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL72GW63 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW01 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW01 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 2 9. Well nomenclature in RED indicates the well has been abandoned GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 8/12/2014 BQL 0.613 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/12/2014 BQL 0.623 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10Dup 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW10 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW14 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW14 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW14 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW14 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 8/18/2015 1.4 BQL BQL BQL BQL BQL BQL BQL BQL 4.11 BQL BQL BQL74GW15 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW15 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 3 9. Well nomenclature in RED indicates the well has been abandoned GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 8/12/2014 103 1.64 0.726 0.679 0.434 0.642 0.5 1.68 1.42 245 1.98 1.19 BQL74GW16 3/10/2015 85 1.35 0.377 0.566 BQL 0.519 0.377 1.42 1.26 195 1.73 1.03 BQL74GW16 8/18/2015 91.5 1.46 BQL BQL BQL BQL BQL 1.74 1.43 247 1.93 1.12 BQL74GW16 8/16/2016 160 1.63 BQL 1.17 BQL 1.21 1.04 2.49 1.66 335 2.59 2.5 BQL74GW16 8/15/2017 35.6 BQL BQL BQL BQL BQL BQL BQL BQL 32.1 1.17 BQL BQL74GW16 8/14/2018 36.3 BQL BQL BQL BQL BQL BQL BQL BQL 86.1 BQL BQL BQL74GW16 2/21/2019 28 BQL BQL BQL BQL BQL BQL BQL 1.37 45.2 BQL BQL BQL74GW16 5/7/2019 16 BQL BQL BQL BQL BQL BQL BQL BQL 29.2 BQL BQL BQL74GW16 8/20/2019 11.8 BQL BQL BQL BQL BQL BQL BQL BQL 23.2 BQL BQL BQL74GW16 11/5/2019 15.9 1.01 BQL BQL BQL BQL BQL BQL 1.01 36.7 BQL BQL BQL74GW16 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW17 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW21 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 4 9. Well nomenclature in RED indicates the well has been abandoned GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.31 BQL BQL BQL74GW23 3/10/2015 BQL BQL BQL 0.434 BQL 0.698 0.462 0.623 BQL 1.35 BQL 0.566 BQL74GW23 8/18/2015 BQL BQL BQL BQL BQL 1.25 BQL BQL BQL 2.25 BQL BQL BQL74GW23 2/11/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.1 BQL BQL BQL74GW23 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.9 BQL BQL BQL74GW23 2/13/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.94 BQL BQL BQL74GW23 2/13/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.85 BQL BQL BQL74GW23Dup 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL 3.1 BQL BQL BQL74GW23 2/16/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL 2.04 BQL BQL BQL74GW23 2/16/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.67 BQL BQL BQL74GW23Dup 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW23 11/13/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW23 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW23 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW23 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.13 BQL BQL BQL74GW23 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW23 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 5 9. Well nomenclature in RED indicates the well has been abandoned GW Standard Revised/Estab. (See Table III)2-MethylnaphthaleneAcenaphtheneAnthraceneBenzo(a)anthraceneBenzo(a)pyreneChryseneHISTORICAL GROUNDWATER LABORATORY ANALYTICAL RESULTS SITE 3996 TABLE 6.3C EPA METHOD 610 BY EPA METHOD 625 Date Benzo(b)fluorantheneSample ID FluorantheneFluoreneNaphthalenePyrenePhenanthreneAll Other Analytes30 80 2000 0.05 0.005 0.05 5 300 300 6 200 2002L GWQS GCL 12500 2120 2000 4.7 0.81 0.75 5 300 990 6000 410 200 Contaminant of Concern 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 3/10/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 2/11/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 2/11/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW24Dup 8/12/2014 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 8/18/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 8/16/2016 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 8/15/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 8/14/2018 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 2/21/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 5/7/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 8/20/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 11/5/2019 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL74GW29 Notes: 1. 2L GWQS = North Carolina Groundwater Quality Standard 15A NCAC 2L .0202 2. GCL = Gross Contamination Levels for groundwater as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, Change 3 Effective December 1, 2013 3. All units are in ug/L (Micrograms per Liter) 4. BQL = Below Quantitation Limits 5. NA = Not Analyzed 6. A zero in the 2L GWQS column indicates the 2L Standard is equal to the laboratory detection limit 7. A zero in the GCL column indicates a GCL has not been established 8. Shaded concentrations indicate exceedance of the 2L GWQS Page 6 9. Well nomenclature in RED indicates the well has been abandoned <<^_ ^_ ^_ ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! !! !! ! !! ! ! !! ! ! ! ! ! ! !! ! ! ! !! !! !! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! !! !! !! ! !! ! > > > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > R > R R >R >R >R> R > = J J J J J > >> > > 72GW01 72GW15 72GW10 72GW06 72GW24 74GW33 72GW02 72GW25 74PR25 72GW67 74HP01 72GW16 72GW26 72GW27 72GW13 72GW34 74GW1574GW14 74GW23 74GW24 131 72GW62 72GW63 72GW28 72GW04 72GW12 72GW29 72GW3272GW31 74GW19 74GW20 74GW0674GW07 74GW09 74GW0474GW05 74GW0874GW25 72GW35 74GW0174GW02 74GW16 74GW1074GW11 74GW12 74GW17 74GW13 74GW29 74GW2274GW21 74GW2774GW03 72GW53A72GW52ASITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 3998 1667 1669 4030 3996 3997 140 167017006TH AVENUEWR I G H T R O A D A STREET72GW33 74GW18 74GW26 74GW28 144 130 72GW22 72GW03 =90GW01 72GW23 72GW05 72GW14 72GW08 72GW07 72GW17 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:NOV 2019 Drawn By:THW Checked By:SAC FIGURE 6.1A LEGEND No Measurable Thickness Product Detected Free Product Plume Free ProductWell by Type ! ! Known Points of Release^_ ³ SITE 3996FREE PRODUCT PLUME MAP AS OF AUGUST 2019 J RW A Surface Water =T-I >T-II R T-III S Unknown Well! This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: 1. Free Product was not detected at this site in any of the wells gauged during this monitoring event. 200 0 200100 FeetSCALE àGroundwater Flow Direction (Upper Aquifer) <<^_ ^_ ^_ !! ! ! ! !! !! !! ! ! ! !! ! ! ! ! ! ! ! ! ! ! ! !! ! !! ! !! ! > > > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > R > R R >R >R >R> R > = J J J J J > >> > > 72GW01 72GW15 72GW10 72GW06 72GW24 74GW33 72GW02 72GW25 74PR25 72GW67 74HP01 72GW16 72GW26 72GW27 72GW13 72GW34 74GW15 74GW23 74GW24 131 72GW28 72GW04 72GW12 72GW29 74GW16 74GW10SITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 3998 1667 1669 4030 3996 3997 140 167017006TH AVENUEWRIGHT ROAD A STREET144 130 72GW22 72GW03 =90GW01 74GW26 74GW21 74GW27 74GW22 74GW28 74GW17 74GW29 72GW53A 72GW52A 72GW63 72GW62 74GW14 72GW35 74GW25 74GW02 74GW01 74GW0874GW1174GW12 74GW05 74GW04 74GW09 74GW07 74GW06 74GW13 74GW18 74GW03 74GW1974GW20 72GW33 72GW32 72GW31 72GW23 72GW05 72GW14 72GW08 72GW07 72GW17 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:DEC 2019 Drawn By:THW Checked By:SAC FIGURE 6.1B LEGEND No Measurable Thickness Product Detected Free Product Plume Free ProductWell by Type ! ! Known Points of Release^_ ³ SITE 3996FREE PRODUCT PLUME MAP AS OF NOVEMBER 2019 J RW A Surface Water =T-I >T-II R T-III S Unknown Well! This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: 1. Free Product was not detected at this site in any of the wells gauged during this monitoring event. 200 0 200100 FeetSCALE àGroundwater Flow Direction (Upper Aquifer) <<^_ ^_ ^_! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! ! !!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !! !!!!! !!!! ! > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > > R R > R R >R >R >R> R >R >> > = J J J J J > >> > > 147 144 1701 72GW01 72GW15 72GW09 72GW24 72GW06 72GW51A 72GW65 72GW24 74GW33 72GW0272GW25 72GW66 72GW6774HP01 72GW16 72GW26 72GW27 72GW13 131 72GW63 72GW28 72GW04 72GW12 72GW29 72GW53ASITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 39981667 1669 4030 3996 3997 140 167017006TH AVENUEWRIGHT ROAD A STREET74GW18 74GW13 74GW06 74GW07 74GW09 74GW03 74GW04 74GW25 74GW05 74GW11 74GW12 74GW28 74GW27 74GW26 74GW22 74GW01 74GW02 74GW19 74GW20 74GW08 72GW32 72GW31 72GW17 74PR29 74PR2772GW65 74PR25 74PR2672GW49A 72GW05 72GW22 3769 146 130 72GW35 72GW03 74GW23 74GW24 72GW52A 74GW16 74GW15 72GW34 74GW29 72GW62 74GW10 74GW17 72GW33 !> 72GW68 74GW14 74GW21 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:NOV 2019 Drawn By:THW Checked By:SAC FIGURE 6.2A LEGEND Well by Type Known Points of Release^_ ³ J RW A Surface Water =T-I >T-II R T-III S Unknown Well! This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: SITE 3996SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L - UST COMPOUNDS -AS OF AUGUST 2019 SM 6200B2L CompliantSM 6200B 2L Non-Compliant(UST Compounds) SM 6200BPlume in Excess of 2L ! ! Free Product Detected! SM 6200B 2L Non-Compliant(Non-UST Compounds)! 1. No additional sampling is planned as NFA with a groundwater LUR will be implemented. 2. 2L Standard refers to North Carolina Groundwater Quality Standard 15A NCAC 2L.0202. 3. GCL refers to Gross Contaminant Level as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, change 3 Effective December 1, 2013. 4. A 2L Standard of "0.00" implies a standard has not yet been established. According to NCAC T15:02L, any compound found above laboratory detection limits is considered non-compliant unless otherwise specified by the NCDEQ. 5. The groundwater contaminant boundary depicted on this Figure is based on the GCL list negotiated between the NCDEQ and the MCASCP EAD (letter dated January 15, 2008). Groundwater wells depicted as "blue" and data shaded with "blue" in the table exceed the NC 2L Standard for Non-UST compounds only. 200 0 200100 FeetSCALE àGroundwater Flow Direction (Upper Aquifer) Groundwater wells depicted as "blue" exceed the NC 2L Standard for Non-UST compounds. Sample ID Well Type Well Depth Date Parameter Results Units 2L Standard GCL72GW52AT-II 25.00 8/20/2019 Benzene 3.89000 ug/L 1.00000 5000.0000072GW52AT-II 25.00 8/20/2019 Trichloroethene 5.38000 ug/L 3.00000 3000.0000074GW16T-II 13.90 8/20/2019 1,1-Dichloroethane 249.00000 ug/L 6.00000 6000.0000074GW16T-II 13.90 8/20/2019 Benzene 5.35000 ug/L 1.00000 5000.0000074GW16T-II 13.90 8/20/2019 Naphthalene 46.80000 ug/L 6.00000 6000.0000074GW16T-II 13.90 8/20/2019 Vinyl chloride 11.50000 ug/L 0.03000 30.0000074GW23T-II 14.30 8/20/2019 Benzene 4600.00000 ug/L 1.00000 5000.0000074GW23T-II 14.30 8/20/2019 Isopropylbenzene 533.00000 ug/L 70.00000 25000.0000074GW23T-II 14.30 8/20/2019 Toluene 1280.00000 ug/L 600.00000 260000.0000074GW23T-II 14.30 8/20/2019 Total Xylenes 1560.00000 ug/L 500.00000 85500.0000074GW29T-II 25.00 8/20/2019 Trichloroethene 4.98000 ug/L 3.00000 3000.00000 <<^_ ^_ ^_! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! ! !!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!! !!!!! !!!! ! > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > > R R > R R >R >R >R> R >R >> > = J J J J J > >> > > 147 144 1701 72GW01 72GW15 72GW09 72GW24 72GW06 72GW51A 72GW65 72GW24 74GW33 72GW0272GW25 72GW66 72GW6774HP01 72GW16 72GW26 72GW27 72GW13 131 72GW63 72GW28 72GW04 72GW12 72GW29 72GW53ASITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 39981667 1669 4030 3996 3997 140 167017006TH AVENUEWRIGHT ROAD A STREET74GW18 74GW13 74GW06 74GW07 74GW09 74GW03 74GW04 74GW25 74GW05 74GW11 74GW12 74GW28 74GW27 74GW26 74GW22 74GW01 74GW02 74GW19 74GW20 74GW08 72GW32 72GW31 72GW17 74PR29 74PR2772GW65 74PR25 74PR2672GW49A 72GW05 72GW22 3769 146 130 72GW35 72GW03 74GW23 74GW24 72GW52A 74GW16 74GW15 72GW34 74GW29 72GW62 74GW10 74GW17 72GW33 !> 72GW68 74GW14 74GW21 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:JAN 2020 Drawn By:THW Checked By:SAC FIGURE 6.2B LEGEND Well by Type Known Points of Release^_ ³ J RW A Surface Water =T-I >T-II R T-III S Unknown Well! This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: SITE 3996SM 6200B COLORIMETRY AND PLUME IN EXCESS OF 2L - UST COMPOUNDS -AS OF NOVEMBER 2019 SM 6200B2L CompliantSM 6200B 2L Non-Compliant(UST Compounds) SM 6200BPlume in Excess of 2L ! ! Free Product Detected! SM 6200B 2L Non-Compliant(Non-UST Compounds)! 1. No additional sampling is planned as NFA with a groundwater LUR will be implemented. 2. 2L Standard refers to North Carolina Groundwater Quality Standard 15A NCAC 2L.0202. 3. GCL refers to Gross Contaminant Level as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, change 3 Effective December 1, 2013. 4. A 2L Standard of "0.00" implies a standard has not yet been established. According to NCAC T15:02L, any compound found above laboratory detection limits is considered non-compliant unless otherwise specified by the NCDEQ. 5. The groundwater contaminant boundary depicted on this Figure is based on the GCL list negotiated between the NCDEQ and the MCASCP EAD (letter dated January 15, 2008). Groundwater wells depicted as "blue" and data shaded with "blue" in the table exceed the NC 2L Standard for Non-UST compounds only. 200 0 200100 FeetSCALE àGroundwater Flow Direction (Upper Aquifer) Groundwater wells depicted as "blue" exceed the NC 2L Standard for Non-UST compounds. Sample ID Well Type Well Depth Date Parameter Results Units 2L Standard GCL72GW33T-II 13.00 11/5/2019 Isopropylbenzene 83.50000 ug/L 70.00000 25000.0000072GW52AT-II 25.00 11/5/2019 Benzene 8.64000 ug/L 1.00000 5000.0000072GW52AT-II 25.00 11/5/2019 Isopropylbenzene 138.00000 ug/L 70.00000 25000.0000072GW52AT-II 25.00 11/5/2019 Trichloroethene 5.00000 ug/L 3.00000 3000.0000074GW16T-II 13.90 11/5/2019 1,1-Dichloroethane 260.00000 ug/L 6.00000 6000.0000074GW16T-II 13.90 11/5/2019 Benzene 5.70000 ug/L 1.00000 5000.0000074GW16T-II 13.90 11/5/2019 Naphthalene 40.40000 ug/L 6.00000 6000.0000074GW16T-II 13.90 11/5/2019 Vinyl chloride 24.50000 ug/L 0.03000 30.0000074GW23T-II 14.30 11/5/2019 Benzene 2760.00000 ug/L 1.00000 5000.0000074GW23T-II 14.30 11/5/2019 Isopropylbenzene 441.00000 ug/L 70.00000 25000.0000074GW23T-II 14.30 11/5/2019 Toluene 1200.00000 ug/L 600.00000 260000.0000074GW23T-II 14.30 11/5/2019 Total Xylenes 1360.00000 ug/L 500.00000 85500.0000074GW29T-II 25.00 11/5/2019 Trichloroethene 5.21000 ug/L 3.00000 3000.00000 <<^_ ^_ ^_! !! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! ! > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > R > R R >R >R >R> R >> > = J J J J J > >> > > 144 72GW01 72GW15 72GW10 72GW24 74GW33 72GW0272GW25 72GW66 72GW67 74HP01 72GW16 72GW26 72GW27 72GW13 74GW23 131 72GW63 72GW28 72GW04 72GW12 72GW29 72GW31 72GW53ASITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 39981667 1669 4030 3996 3997 140 167017006TH AVENUEWRIGHT ROAD A STREET74GW18 74GW13 74GW06 74GW07 74GW09 74GW03 74GW04 74GW25 74GW05 74GW11 74GW12 74GW28 74GW27 74GW26 74GW22 74GW02 74GW19 74GW20 74GW08 130 4553 74PR29 74PR26 74PR27 74PR2572GW05 72GW22 72GW06 72GW07 72GW08 72GW32 72GW23 72GW03 72GW35 74GW01 74GW21 74GW14 72GW68 72GW34 72GW33 72GW62 72GW52A 74GW29 74GW17 74GW10 74GW15 74GW24 74GW16 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:NOV 2019 Drawn By:THW Checked By:SAC FIGURE 6.3A LEGENDWell by Type Known Points of Release^_ ³ This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: SITE 3996EPA METHOD 610 EPA BY METHOD 625COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF AUGUST 2019 EPA 610 by EPA 6252L CompliantEPA 610 by EPA 6252L Non-Compliant EPA 610 by EPA 625Plume in Excess of 2L ! ! Free Product Detected! 1. No additional sampling is planned as NFA with a groundwater LUR will be implemented. 2. 2L Standard refers to North Carolina Groundwater Quality Standard 15A NCAC 2L.0202. 3. GCL refers to Gross Contaminant Level as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, change 3 Effective December 1, 2013. 4. A 2L Standard of "0.00" implies a standard has not yet been established. According to NCAC T15:02L, any compound found above laboratory detection limits is considered non-compliant unless otherwise specified by the NCDEQ.àGroundwater Flow Direction (Upper Aquifer) SCALE 200 0 200100 Feet J RW A Surface Water =T-I >T-II R T-III S Unknown Well! Sample ID Well Type Well Depth Date Parameter Results Units 2L Standard GCL74GW16T-II 13.90 8/20/2019 Naphthalene 23.20000 ug/L 6.00000 6000.00000 <<^_ ^_ ^_ !!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! !!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!! ! > >R > > R> > > > R> > > > > > > > > > > >R >R >R > >R >R > R RR > J > > >R > > > > > > R > R R >R >R >R> R >> > = J J J J J > >> > > 144 72GW01 72GW15 72GW10 72GW24 74GW33 72GW0272GW25 72GW66 72GW67 74HP01 72GW16 72GW26 72GW27 72GW13 74GW23 131 72GW63 72GW28 72GW04 72GW12 72GW29 72GW31 72GW53ASITE 130SITE 399672GW11 72GW30 74GW44 74GW36 74GW41 145 1790 199 1640 1639 39981667 1669 4030 3996 3997 140 167017006TH AVENUEWRIGHT ROAD A STREET74GW18 74GW13 74GW06 74GW07 74GW09 74GW03 74GW04 74GW25 74GW05 74GW11 74GW12 74GW28 74GW27 74GW26 74GW22 74GW02 74GW19 74GW20 74GW08 130 4553 74PR29 74PR26 74PR27 74PR2572GW05 72GW22 72GW06 72GW07 72GW08 72GW32 72GW23 72GW03 72GW35 74GW01 74GW21 74GW14 72GW68 72GW34 72GW33 72GW62 72GW52A 74GW29 74GW17 74GW10 74GW15 74GW24 74GW16 Scale:AS SHOWN MCAS CHERRY POINTPERIODIC MONITORINGREPORT NOTES Job No.:219001 Date Drawn:JAN 2020 Drawn By:THW Checked By:SAC FIGURE 6.3B LEGENDWell by Type Known Points of Release^_ ³ This document is "FOR OFFICIAL USE ONLY" and it contains info that may be exempt from public release under theFOI Act (5 U.S.C. 552). It is to be handled IAW DoD policy and is not to be released to the public or personnel who do not have a valid "need-to-know" without prior approval of an authorized DoD official. WARNING: SITE 3996EPA METHOD 610 EPA BY METHOD 625COLORIMETRY AND PLUME IN EXCESS OF 2L AS OF NOVEMBER 2019 EPA 610 by EPA 6252L CompliantEPA 610 by EPA 6252L Non-Compliant EPA 610 by EPA 625Plume in Excess of 2L ! ! Free Product Detected! 1. No additional sampling is planned as NFA with a groundwater LUR will be implemented. 2. 2L Standard refers to North Carolina Groundwater Quality Standard 15A NCAC 2L.0202. 3. GCL refers to Gross Contaminant Level as defined in "Guidelines for Assessment and Corrective Action for UST Releases" July 15, 2008 Version, change 3 Effective December 1, 2013. 4. A 2L Standard of "0.00" implies a standard has not yet been established. According to NCAC T15:02L, any compound found above laboratory detection limits is considered non-compliant unless otherwise specified by the NCDEQ.àGroundwater Flow Direction (Upper Aquifer) SCALE 200 0 200100 Feet J RW A Surface Water =T-I >T-II R T-III S Unknown Well! Sample ID Well Type Well Depth Date Parameter Results Units 2L Standard GCL74GW16T-II 13.90 11/5/2019 Naphthalene 36.70000 ug/L 6.00000 6000.00000