Document wD8Rw9rezQr8MkJoL3em73D0d

AR226-2572 Copy 10 of 20 Laura W alter DECEMBER 2001 GROUNDWATER MONITORMG REPORT FOR W ASHINGTON WORKS FACILITY AND LOCAL. LETART AND LETART DRY RUN LANDULLS W ashington, W est Virginia Janary 2002 Project No. D6WW7423 Prepared by CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 ASH 15624 E ID 1 9 3 1 8 2 DECEMBER 2001 GROUNDW ATER MONITORING REPORT FOR WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS Wasfaimgtoa, West Virginia ____________________ January 2092 ________________ ASH015625 Copy 10 o f 20 Laura W alter DECEMBER 2001 GROUNDWATER MONITORING REPORT FOR WASHINGTON WORKS FACILITY AND LOCAL, LETART AND DRY RUN LANDFILLS WASHINGTON, WV Date: January 2002 Project No.: D6WW7423 CORPORATE REMEDIATION GROUP An Alliance between DuPont end URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 A SH 01S626 E ID 1 9 3 1 8 4 Groundwater Monitoring Report Table of Contents w TABLE OF CONTENTS 1.0 Introduction....................................................................................... 2.0 C-8 Analytical Reporting.,..,.,.,.,..,,,..,,...,,..,,.................................... ...... ................... 2 3.0 Washington Works Facility............. ............................ .................. .......................... 3 4.0 Local Landfill................................................................................... .......................... 4 5,0 Letart Landfill.................... ................................. ................... ........ ..........................4 6.0 Dry Run Landfill,......... ....... ........................................................... .......................... 4 7.0 References....................................................... ................................ .......................... 4 Table 1.0 Table 2.0 Table 2.1A Table 2. IB Table 3.0 Table 3.1A Table 3.1B Table 4.0 Table 4.1A Table 4. IB TABLES C-8 in Surface W ater- Washington Works Facility Monitoring Well Construction and Groundwater Elevation Data - Local Landfill C-8 in Surface Water - Local Landfill C-8 in Groundwater - Local Landfill Monitoring Well Construction and Groundwater Elevation Data - Letart Landfill C-8 in Surface Water - Letart Landfill C-8 in Groundwater - Letart Landfill Monitoring Well Construction and Groundwater Elevation Data - Dry Run Landfill C-8 in Surface Water - Dry Run Landfill C-8 in Groundwater - Dry Run Landfill Figure 1,0 Figure 1.1 Figure 1.2 Figure 2.0 FIGURES Site Location Map - Washington Works Facility Outfall Location Map - Washington Works Facility C-8 Concentration Map December 2001 - Washington Works Facility Surface Water Site Location Map - Local Landfill GMRrev.dg Feb. 4.02 Wilmington. DE 1 A SH 015627 E ID 1 9 3 1 B 5 Groundwater Monitoring Report Table of Contents Figure 2.1 Outfall and Monitoring Well Location Map - Local Landfill Figure 2.2 Groundwater Elevation Map December 2001 --Local Landfill Figure 2.3 C-8 Concentration Map December 2001 - Local Landfill Outfalls and Monitoring Wells Figure 3.0 Figure 3.1 Site Location Map - Letart Landfill Outfall and Monitoring Well Location Map - Letart Landfill Figure 3.2 F-Zone Groundwater Elevation Map November 2001 - Letart Landfill Figure 3.3A C-8 Concentration Map December 2001 - Letart Landfill Outfalls and Monitoring Wells Figure 3.3B C-8 Concentration Map December 2001 - Letart Landfill Zone F Figure 4.0 Site Location Map - Dry Run Figure 4.1 Outfall and Monitoring Well Location Map - Dry Run Landfill Figure 4.2 Groundwater Elevation Map December 2001 - Dry Run Landfill Figure 4.3 C-8 Concentration Map December 2001 - Dry Run Surface Water Figure 4.4 C-8 Concentration in Groundwater December 2001 - Dry Run Bedrock Monitoring Wells. _ _ ............. _ _ APPENDICES Appendix 1.0 Laboratory Analytical Data Reports - Washington Works Facility Appendix 1.1 Chain-of-Custody Records - Washington Works Facility Appendix 2.0 Laboratory Analytical Data Reports - Local Landfill Appendix 2.1 Chain-of-Custody Records - Local Landfill Appendix 3.0 Laboratory' Analytical Data Reports - Letart Landfill Appendix 3.1 Chain-of-Custody Records - Letart Landfill Appendix 4.0 Laboratory Analytical Data Reports - Dry Run Landfill Appendix 4, l Chain-of-Custody Records - Dry Run Landfill GMRrev.doc Feb, 4.02 Wilmington. D i II A SH 015628 E ID 1 9 3 1 8 6 Groundwater Monitoring Report Introduction 1.0 INTRODUCTION A multi-media Consent Order was entered into between the West Virginia Department of Environmental Protection (WVBEP), the West Virginia Department of Health and Human Resources - Bureau for Public Health (WVDHHR-BPH) and DuPont on November 15,2001 (Order No. GWR-2001-019). The Consent Order identified a series of requirements and tasks that need to be performed by the parties (WVDBP, WVDHHRBPH, and DuPont) in order to determine whether there has been any impact on human health and the environment as a result of releases of ammonium perfluorooctanoate (C8), CAS Number 3825-26-1, to the environment from DuPont operations at the Washington Works facility and the associated landfills (Local, Letart and Dry Run). The Consent Order established the C-B Groundwater Investigation Steering team (GIST) to oversee investigations and activities that will be conducted to assess the presence and extent of C-8 in drinking water, groundwater, and surface water at and around the Washington Works facility and the Local, Letart and Dry Run T.andfills. An additional component of the Consent Order relates to the National Pollutant Discharge Elimination System (NPDES) requirements, hi this portion of the Consent Order, specific outfalls and outlets (outfalls) to be sampled monthly for C-8 by DuPont are identified. Pursuant to Attachment A of the Consent Order, three tasks will be performed by DuPont and evaluated by the GIST, Tasks A, B, and C. Task A: Groundwater Use and Well Survey/Groundwater Monitoring is ongoing. Task B: Assessment of Existing Groundwater and Surface Water Monitoring Data includes the compilation of historical C-8 data, monitoring all wells at the landfills and the development of a Groundwater Monitoring Plan (GMP) for the Washington Works facility. The first part of the task, the historical C-8 data compilation report has been submitted to the GIST for evaluation (DuPont, January 2002a). The second part of this task, monitoring C-8 in groundwater at the landfills, began in December 2001 and will be performed monthly for four months and quarterly thereafter. The third part of the task, the proposed GMP for the Washington Works facility, has been submitted to the GIST for evaluation (DuPont, January 2002b) and groundwater sampling on the Washington Works facility will .begin in late January 2002. Groundwater sampling at the Washington Works facility will also be conducted monthly for four months and quarterly thereafter. Task C: Plume Identification/Groundwater Assessment will be performed on a schedule to be approved by the GIST. This report presents the results of the C-8 sampling that was performed in December 2001. Outfall sampling results are presented for the Washington.Works facility. Groundwater and surface water results are presented for the landfills. Additionally, C-8 results are presented for several surface water samples not required by the Consent Order or the NPDES permits. GMRrev.doc Feb. 4,02 Wilmington, DE 1 A SH 015629 E ID 1 9 3 1 8 7 Groundwater Monitoring Report I C-8 Analytical Reporting 2.0 C-B ANALYTICAL REPORTING The analytical method, method detection limit, and laboratory utilized for C-8 analysis has changed over time. Prior to 1991, DuPont performed C-8 analysis at the DuPont Experimental Station in Wilmington, Delaware, In 1991, when the RCRA Verification Investigation was conducted, the analysis was contracted to the CH2MH1II Laboratory in Montgomery, Alabama, Both labs used a Gas Chromatography/Electron Capture Dectector (GC-ECD) based analytical method with detection limits for C-8 that ranged from 0,1 to 1.0 ug/1. ' CH2MHHI conducted C-8 analysis for DuPont into the fall of 1998 when the laboratory ceased operation. At that time, DuPont had completed one round of analysis for the RCRA Facility Investigation (RFI). The analytical work was transferred to Lancaster Laboratories, Lancaster, PA, for the RFI second round analysis in February 1999. Lancaster Laboratories continued to conduct C-8 analysis using GC-ECD for DuPont until October 2001, when development and testing was initiated on a new analytical method developed by Exygen Research, Inc. (located in State College, PA) that utilizes Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS). DuPont adopted the use of LC/MS/MS for C-8 analysis in November 2001. Exygen Research Inc. reports C-8 results for the laboratory replicate of each field sample. These results are evaluated for precision by comparing the field sample result to the corresponding laboratory replicate result. U If both results are less than the practical quantitation limit (PQL), the replicate sample for that analyte is considered to have passed the precision criteria, If one or both results are between one and five times the PQL, the replicate is considered to have met the precision criteria if the two results differ by less than the PQL. If one result is less than the PQL and the other is not, and if the two results differed by a value less than the PQL, the replicate is said to have met the acceptance criteria, Finally, if both results are at least five times the PQL, the replicate is considered to have met the criteria if the relative percent difference (RPD) between the two results is less than or equal to 20%. The RPD is the absolute value of the difference of two measurements divided by their average. When the precision criteria outlined above are met, DuPont reports the average of the field sample and lab replicate results reported by the laboratory. If criteria for precision are exceeded, DuPont reports the higher of the sample and lab replicate results. Finally, when one result (from the sample/lab replicate pair) is above the PQL and one below, the result that is above the PQLs is reported. C-8 results are recorded in the Corporate Environmental Database (CED) and are repotted as FC-143 for consistency with historical results. 6MRrav.doc Feb. 4, 02 Wilmington, DE |i r: 2 A SH 015630 E ID 1 9 3 1 8 8 Groundwater Monitoring Report Washington Works Facility 3.0 WASHINGTON WORKS FACILITY Figure 1.0 shows the location of the Washington Works facility. On December 20,2001, six outfalls were sampled for C-8 (001,002,003,005,007, and 105). All o f these outfalls collect process water and stormwater runoff. Sampling of these outfalls is required by the Consent Order and the WV NPDES permit No, WV0001279. The locations o f these outfalls are shown in Figure 1.1. Figure 1.2 presents the C-8 concentration map. Table 1,0 provides the C-8 analytical results for the outfalls. For each outfall listed in this table, historical data is'summarized with the most recent results listed first. Laboratory analytical data reports are included in Appendix 1.0 and the Chain-of-Custody records are in Appendix 1.1. GMRrev.doc Feb. 4.02 Wilmington. DE 3 A SH Q 15631 E ID 1 9 3 1 8 9 Groundwater Monitoring Report Local Landfill 4.0 LOCAL LANDFILL Figure 2.0 shows the location of the Local Landfill. On December 13,2001, three outfalls (004,005, and 101) and four wells (LLMW-4, -6, -9, and-10) were sampled for C-8. Sampling of these outfalls is required by tire Consent Order and the WV NPDES permit No. WV0076538. The locations of the outfalls and monitoring wells are shown on Figure 2.1. Outfalls 004,005, and 101 collect stormwater runoff and process water. Outfalls 004 and 005 were dry during sampling; therefore, no samples were collected. . Table 2.0 summarizes the well screen data and December 2001 groundwater elevations measured for the monitoring wells. Figure 2.2 presents the groundwater elevation map for December 2001. Tables 2.1A and 2. IB present the C-8 analytical results for the outfalls and the monitoring wells, respectively. These tables include the historic data available for each location sampled. The historical data is presented with the most recent data first. Figure 2.3 is the C-8 concentration map for December 2001. Laboratory analytical data reports and Chain-of-Custody records are provided in Appendices 2.0 and 2.1, respectively. GMRrev.doc Feb. 4,02 Wilmington. DE 4 A SH 015632 E ID 1 9 3 1 9 0 Groundwater Monitoring Report Letart Landfill 5.0 LETART LANDFILL Figure 3,0 presents the Letart Landfill location map. hi December 2001,13 wells and three outfalls were sampled for C-8. Sampling of outfalls 002 (leachate) and 003 (stormwater runoff) are required by the Consent Order and the WV NPDES permit No. WV0076Q66, The Rt. 33 stream surface water sample is not a required sampling point. The locations of monitoring wells and two of the surface water samples are shown on Figure 3.1. The location o f the Rl. 33 stream sample is near the property boundary to the west and is not shown b this Figure. Thirteen monitoring wells at Letart Landfill were sampled on December 10-11,2001. Groundwater elevation and well screen data for the 13 monitoring wells are presented in Table 3.1. Changes to routine sampling protocols were recorded in the field notes and are summarized below. Depth to groundwater was not measured in five wells (LMW-2A, -6, -9, -10, and -11) because of equipment limitations. Because these wells included four of the five wells screened in Zone F, it was not possible to construct a groundwater elevation contour map for the Zone F. However, the most recent groundwater elevation contour map for the Letart Landfill Zone F aquifer (November 2001) is presented in Figure 3.2. Monitoring wells LMW-3 and -10 went dry during low-flow purging. Monitoring well LMW-3 was sampled with a bailer after allowmg 48 hours for recharge. No field parameters were monitored due to the very slow recharge rate. Only one 500 ml bottle was collected. Monitoring well LMW-10 was purged and sampled three days later. No field parameters were collected due to the very slow recharge rate. Monitoring well LMW-4 went dry after the third round of field parameters was collected. This well was also sampled with a bailer after allowing 48 hours for recharge. Only one 500 ml sample was collected. Due to the very slow recharge rate at monitoring well LMW-9, the sample bottles were filled without monitoring the field parameters. The C-8 results for the surface water samples and monitoring wells are presented in Tables 3.1A and 3.1B, respectively. Figure 3.3 presents a C-8 concentration map for monitoring wells and outfalls for December 2001. Figure 3.3B provides a C-8 concentration contour map for the F-zone, the underlying significant aquifer. Appendices . 3,0 and 3.1 present the laboratory analytical data reports and the Chain-of-Custody records, respectively. GMRrev.doe Feb. 4,02 Wilmington. DE A SH 015633 E ID 1 9 3 1 9 1 Groundwater Monitoring Report Dry Run Landfill 6,0 DRY RUN LANDFILL Figure 4,0 shows the location of the Dry Run Landfill, In December 2001, three outfalls (001,003, and 004) and eight wells were monitored for C-8, (Outfall 002 is a required outfall sampling location as stated in the WV NFDES permit No. WV0076244. However, it was a temporary relocation of outfall 001 and no longer exists). Outfall 001 collects stormwater and leachate. Outfalls 003 and 004 collect stormwater only. Outfalls 001,003, and 004 were dry during field sampling, therefore, no samples were collected. Five additional surface water locations (not required to be sampled by the Consent order or the NFDES permit) were also sampled for C-8. These include Stream Samples #1 and #2, DR Leachate, Pond Underdram and Property Boundary. The location of the surface water and monitoring wells are shown on Figure 4.1. The Property Boundary sample location is on the western property boundary and is not shown in this Figure, Table 4.0 summarizes the well screen data and groundwater elevations for the monitoring wells. Figure 4,2 presents the groundwater elevation map for December 2001. Tables 4.1A and 4. IB present the C-8 analytical results for the surface water samples and the monitoring wells, respectively. The data in these tables include historic data available for each location sampled. Figure 4.3 presents the C-8 concentration map for surface water in December 2001 and Figure 4.4 presents the C-8 concentrations in bedrock groundwater (December 2001), Laboratory analytical data reports and Chain-of-Custody records are provided in Appendices 4.0 and 4.1, respectively. GMRrev.doc Feb. 4,02 Wilmington, D 6 Groundwater Monitoring Report References 7 , REFERENCES DuPont 2002a. Compilation o fHistorical C-8 Data, DuPont Washington Works Main Plant and Landfills January 2002. Corporate Remediation Group DuPont. 2002b. Proposed Groundwater Monitoring Planfo r Washington Works Facility ' Plant and Landfills January 2002. Corporate Remediation Group. GMRrsv.doc Feb. 4, D2 Wilmington, DE 7 A SH 015635 E ID 1 9 3 1 9 3 A SH 01S636 E D 193194 TABLES A SH Q 15637 E ID 1 9 3 1 9 5 Table 1.0 Summary of Analytical Results: C-8 in Surface W ater DuPont Washington W orks Facility W ashington, WV I Sample OUTLET 001 OUTFALL 002 OUTLET 003 OUTFALL 005 OUTLET 007 OUTLET 105 Date 12/20/01 12/20/01 10/25/01 9/18/01 7/11/01 ' /14/01 5/31/01 4/11/01 3/21/01 2/14/01 12420/01 12/20/01 12/20/01 (dup) 10/25/01 9/19/01 8/30/01 7/11/01 6/14/01 5/31/01 4/11/01 3/21/01 2/14/01 12/20/01 13720/01 ____ " M J mbW 3.720 1.980 2.B 0.118 0.558 0.594 0.436 1.5 B.54 1.74 0.713 31.40 35.20 617 2,86 2.16 120 7.4 1.43 4.31 199 153 1.89 9.78 . Note: Analytical method changed as of November 2001 (see Section 2.0 for details). 02/04/02 1 of 1 Tablel .0 Summary of Analytical Results.doc SH015638 EXD193196 Table 2.0 M onitoring W ell Construction Data Local Landfill W ashington, W V Mnnltnriufi WeHs LIM W - 4 L IM W -1 LLMW-19 LLMW-110 Surface Elevation (feet) 844.7 793.2 788.54 805.94 Total Depth (feet) 155 90 80 87 W ell Diameter (Inches) 4 4 4 4 Slot Size (inches) 0.020 0.020 0.020 0.020 Screen Length (feet) 20 20 20 20 Elevation of Screen Interval (feet) 717.2-697.2 723.2-703.2 728.54-708.54 738.94-718.94 Groundwater Elevation (feet) tey*& 719.69 727.78 720.67 SH15639 Table 2.1 A Summary of Analytical Results: C-8 in Surface W ater Local Landfill Washington, W V Sample ~ OUTFALL 004 OUTFALL 00S OUTLET 101 Date 12/13/01 9/27/2000 12/10/1899 6/3/1999 6/2/1998 5/29/1997 4/2/1996 2/1B/1994 12/13/01 9/27/2000 12/10/1999 6/3/1809 6/2/1998 5/29/1997 4/2/1996 2/10/1994 12/13/01 9/14/2000 6/3/1999 6/2/1998 C 4 {null No-flow conditions 4.73 7.1 3,06 12 13 13 11 No-flow conditions 13,3 34 8,8 39 41 39 35 82,40 12 15 54 Note: Analytical method changed as ofNovem ber 2001 (see Section 2.0 for details), . 02/04/02 1 Ofl Table 2.1A.doc A SH 15640 E ID 1 9 3 1 9 8 Table 2.1B Summary o f Analytical Results; - 0*8 in Groundwater Local Landfill W ashington, WV Sarnie U.M W 4 LLMW-6 U-MW-9 LUrfW-10 Dafe 12/13/01 5/16/2001 5/11/2D00 5/19/1099 5/27/1998 4/11/1B96 12/13/01 5/16/2001 5/10/2000 5/19/1089 5/27/1098 4/11/1096 12/13/01 5/16/2001 5/10/2000 5/20/1999 5/27/19SB 4/11/1996 12/13/01 5/20/1999 5/20/1998 ___________ C 4 (igd)___________ 54.60 1.4 10 16.2 26 39 11.90 3 1,42 1.32 9 15 NO 0.039 J <0,029 0,046 J <0.1 0.14 0.133 0.13 0,22 J-estimated value {below laboratory quantitation lim it) ND=Compound not detected Note: Analytical method changed a$ of November 2001 (see Section 2.0 for details). 02/04/02 1 of I Table2.1B.doc A SH 015641 E ID 1 9 3 1 9 9 Table 3.0 M onitoring W ell C o n stru c tio n Data Leta r t Landfill Letart, W V Note: Groundwater evelations were not determined in some wells (NA) because of equipment limitations. Ba0 H 0m*1 ro E ID 193200 Table 3,1 A Summary of Analytical Results: C*8 in Surface W ater Letart Landfill Letart, WV Sample 002(LEACHATE BASIN) 003 RT 33 STREAM Date 1214/01 11/27/2001 7/20/01 7/2S/2000 4/3/2000 1/14/2000 10/21/1999 12/14/01 7/20/2001 7/31/2000 7/20/1999 7/23/1937 4/17/1996 '' 0-8 (UE/I) 36.1 53.2 159 1350 I960 920 3240 0.390 2.01 0.573 2,23 2 1.8 Note: Analytical method changed as ofNovember 2001 (see Section 2.0 for details). 02/04/02 1cfl Table3.1A.doc A SH 015643 E ID 1 9 3 2 0 1 Table 3.1B Summary of Analytical Results; C-8 in Groundwater Letart Landfill Letart, WV Sample LMW-2A - -L.MW-5B LMW-6 LMW-9 t.MW-10 LMW-11 F-Zo ne W ells Date 12/11/01 7/19/2001 1/30/2001 10/5/2000 7/25/2000 4/3/2000 1/14/2000 10/21/1999 7/20/1999 5/2B/1998 7/23/1B97 4/17/199B 9/20/1894 3/15/1994 11/22/1991 3/22/1891 12/11/01 7/20/2001 7/20/01 idUD) 1/31/2001 10/5/2000 10/5/00 (duo) 7/25/2000 4/3/2000 4/3/00 (dup) 1/14/2000 10/21/1999 10/21/S9 (duo! 7/20/1999 7/23/1997 9/20/1994 3/16/1994 11/22/1991 3/22/1991 12/11/01 1/13/2000 5/2B/1998 11/22/1991 3/22/1991 12/10/01 10/7/1992 12/13/01 12/11/01 C-S (ttf>/l) 830 242 423 248 275 308 453 370 350 990 480 460 270 280 63 50 1880 483 ... 5619"2 ~-- 1190. J 780 900. J 1100 1020 1030 1750 1700 4m45 ~ -- 530 1200 380 340 15.8 9.4 30 24 25 0.845 0.2 0.134 0.128 . I J " estimated value {below laboratory quantitation limit). Note: Analytical method changed as of November 2001 (see Section 2,0 for details). Simple LMW-3A, D/E-Zone Wells I Dili 12/11/01 i 7/19/1999 11/22/1991 3/22/1991 C-8 (art) 100 6 0 .3 350 3B0 02/04/02 1of 2 Table 3.1B.doc A SH 015644 E X D 193202 Table 3.1B Summary of Analytical Results (Don't): C8 In Groundwater Letart Landfill Letart, WV D/E-Zone Wells LMW4 12/13/01 4/3/2000 1/14/2000 11/22/1991 3/28/1991 1580 272 172 830 890 LMW-SA 12/11/01 11/22/1991 3/22/1991 94.4 0.8 1.5 Note: Analytical method changed as o f November 2001 (see Section 2.0 for details). C-Zcme W ells SaoiDle Daw C 4 (tia/l)________ _ LMW-3 12/13/01 1520 11/22/1991 1000 3/22/1991 390 - Note: Analytical method changed as o f November 2001 (see Section 2.0 for details}. A -Z one W ells Sample LMW-1 Date 12/10/01 7/19/2001 1/31/2001 10/4/2000 7/24/2000 4/3/2000 1/13/2000 10/21/1999 7/20/1999 S/28/1998 7/23/1997' ' ' ` 4/17/1906 11/22/1991 3/22/1991 _ "TM c-sru i/n 24600 6100 9190 10600 8990 13600 17400 12600 6920 _ 5100 1700 68 60 ~ . .... LMW-T 12/10/01 7/20/2001 1/31/2001 10/4/2000 7/25/2000 4/3/2000 334 242 249 231 158 211 1/13/2000 10/20/1999 7/20/1899 219 339 78.3 5/28/1998 7/23/1997 4/17/1996 11/22/1991 260 53 15 0.1 LMW-B 12/10/01 7/19,2001 3240 1120 1/30/2D01 ' 10M/2000 7/24/2000 4/3/2000 1/13/2000 10/20/1999 7/20/1999 5/28,1998 7/23/1997 4/17/1996 11/22/1991 ........ 2650 2300 2160 2180 2100 3260 1790 2700 2000 2200 280 . Note: Analytical method changed as o f November 2001 (see Section 2.0 for details). 02/04/02 2 of 2 Table 3.iB.doc A SH 015645 E ID 1 9 3 2 0 3 Monitoring Weils DRMW-:14 DRMW-:13 D R M W -I13A DRMW-112 DRM W -!l2A D R M W -:128 DRMW-:0A D R M W -!15 Table 4.0 M onitoring W ell C onstruction Data Dry Run Landfill Lubeck, WV Surface Elevation (feet) 936.14 720.6 720.3 730.5 730.3 730.5 744.93 730.87 Total Depth (feet! 260 35 11 35 17 15 12.2 45 * W eil D iam eter (inches) 10 4 4 4 4 4 2 2 S lo t Size (incites) NA 0.010 0.010 0.010 0.010 0.010 0.010 Screen Length (feet) NA 15 5 15 5 10 Elevation of Screen Interval (feet) NA 700.6-685.6 714.3-709.3 710.5-695.5 718.3-713.3 726.5-715.5 20 705.87-885.87 Groundwater Elevation (feet) 754.09 712.08 714.68 724.68 727.83 728.00 738.28 716.10 E ID 193204 &a oH 0 0* Table 4.1 A Summary o f Analytical Results: C-8 In Surface W ater Dry Run Landfill Lubeck, W V ... . Samnle OUTLET 001 t OUTLET 003 | OUTLET 004 PROPERTY BOUNDARY STREAM SAMPLING POINTS STREAM SAMPLING POINT#2 DRLEACHATE POND UNDERDRAiN Date 12/12/01 10/3/2000 12/29/1999 5/10/1998 4/9/1995 12/12/01 12/12/01 12/12/01 10/3/2000 4/9/1996 7/14/1998 12/29/1999 12/12/01 10/3/2000 12/29/1999 5/19/1998 12/12/01 10/3/2000 12/29/1999 5/19/1998 12/12/01 10/3/2000 12/29/1999 5/19/1996 7/22/1997 12/12/01 _______ ____________ No-flow conditions 31.5 66 17 m No-flow conditions .......... Nodtow conditions 3.99 10.3 9.9 ............. 0.88 39 1.19 0.756 0.54 1 20.5 27,6 87 4.6 109 27.4 ... 34 ............... 58 62 35.4 Note; Analytical method changed as of November 2001 {see Section 2.0 for details). 02/04/02 1of 1 Table4.1A.doc A SH 015647 E ID 1 9 3 2 0 5 Table 4.1 B Summary o f Analytical Results: C-8 in Groundwater Dry Run Landfill Lubeck, WV Sample DRMW-12 Data 1 12/12/01 7/19/2000 7/21/1999 5/26/199B 7/22/1997 4/10/1996 . C-BOiB/1) 0.086 0.16 0.134 <0.10 <0,1 <0.1 DRMW-12A DRMW-12B 12/12/01 7/19/2000 7/21/1999 5/26/199B 7/22/1097 4/10/1996 12/12/01 7/20/2000 7/21/1999 6/16/1998 0.158 0.128 0.081 J <0.10 <0,1 <0*1 0.215 ND (0.029) 5.4 <0.1 DRMW-13 DRMW-13A 12/12/01 7/20/2000 7/21/1999 5/26/1998 7/22/1997 12/12/01 7/20/2000 7/21/1999 5/26/1998 7/22/1997 4/10/1996 4/10/1996 (Hup) 9,86 9.8 3.6 92 7 6.4 9,9 0.070 J 8.7 15 8.2 11 DRMW-14 DRMW-15 DRMW.6A 12/12/01 7/20/2000 7/21/1999 6/16/1998 7/21/1997 4/10/1998 12/12/01 7/20/2000 7/21/1999 12/12/01 7/20/2000 7/21/1099 5/26/1995 7/22/1997 4/10/1996 NQ 0.115 2.5 <0.1 <0.1 <0.1 4.94 0.7B3 0,263 1.04 0.212 0.096 027 0.36 0.19 ND = Compound not detected. NQ = Compound detected at a level between the limit o f detection and die limit o f Quantitation. Result is not quantifiable. J = estimated value (below laboratory quantitation limit). Note: Analytical method changed as of November 2001 (see Section 2.0 for details). 02/04/02 1 of 1 Table 4.1B.doc A SH Q 15648 E ID 1 9 3 2 0 6 A SH 0X 5649 EID1932Q7 FIGURES A SB015650 BID19320B f & ' \ p *4r ||p : T i \ I S - i * ;; \ - fl rag i.V * , 4H ` f ir - ,, ' Source: MAP TAKEN PROM W E LUBECK, ViV USGS QUADRANGLE ^ Corporate Remediation Group {(to n e rtw ien D u P c m l u n d R S D ia m o n d B a rle y Mil P J a Building %? W ilm in g to n , D il w e r* 1B0 5 SITE LOCATION MAP DuPont Washington Works Facility Washington, West Virginio SGME Nt I teei* cm B /27/O I CSWW DEL CMEISfi fat. MOOJAT im oitB ptPFWKO, Ta z u q o i TM t.o A SH 015651 E ID 1 9 3 2 0 9 ASH0156S2 E ID 1 9 3 2 1 0 LEGEND pm " MONITORING WELL # - PRODUCTION WELL OUTFALL SAMPLING POINT . 3.72 * CONCENTRATION c - a (u g /L ) I DECEMBER 2001 W H O ______________ _____________________ A SH 015653 s SCALE 700 700* m i C -8 IN SURFACE WATER DECEMBER 2001 eM Corporale Ftefinedatton Group OiPont Washingtorv Wtwks Fodtfy Woahingonv W-tust VlrgJnro MH Ber* VH Biexo. SWMWq 7 WgfTwalea, PfW WS E f*1CJ A SH Q 15654 E D 193212 A SH 015655 EXD193213 ! E ID 193214 -- oiotutoctwcmstwwowea A. sentoaorncwmi ( m a tt M C N T EUL WkTCT U K L E lf W H O N .... 1 -------AFMCMWTC BEWCCK CROWD' WAtER FLOW OWECTK3N & a0H 01 o01t Ol SCALE 400 400* 800' Cofpofat RasodltonCfr Pv*Amt*jQWfenMOU*T*HWWNi 1 3Sn *w w r--* * a ir T GROUNDWATER ELEVIWN COHTOOK MAF-BECEMBEB 2001 Loco! LandTHI Wofisrtgton, Wm ^ illr w H uM\D ASH01S657 S orte y MDI Pfos&, E M dfog 27 Wilm ington, Dr tJ*awonc -1-9--8--0--5- Local Landfill Washington, WV KMC. ** 4AMM BCMWB DWNgHMlCDBa bnturc:twa.noa SPURGE fe y KAVEH, VV-OHS? QUADRANGLE 7.5* SERES S IT E L O C A T IO N M A P C orporata Remediation Group A n 4t& anc* belw vm ZhiPard a n d 7hp W~G B tem im d C roup Barley MHf Plaza, Buildhg 27 Wilmington, Dataware 19?St-DQ27 U t o r t Lan dfill Site Letart, WV KU Ai if 13/5A eis&-........ DMW fm. DCt pcpup WtMt c a fti 23W0M Rftnt ^ 3.P A SH 015658 E ID 1 9 3 2 1 6  T 2 E 6 TCII3 6S9SX0HSV -w . . 8 T Z 6 T a i3 99ST08SV  A SH 015661 E ID 1 9 3 2 X 9 A SH 015662 E ID 1 9 3 2 2 0 ... A SH 015663 E ID 1 9 3 2 2 1 A SH 15664 E ID 1 9 3 2 2 2  SH 015665 ID 193223 o m H a m ASH15666 A SH 015667 ta H O