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HomeMy WebLinkAboutNCD986175644_20050501_Davis Park Road TCE Site_FRBCERCLA LTAR_LTAR Feb 2005 Semiannual Sampling Event Report-OCRI I I I I I I I I I I I I I I I I I I Document Control No. RFW205-2A-ATJK Revision 0 LONG TERM RESPONSE ACTION FEBRUARY 2005 SEMIANNUAL SAMPLING EVENT REPORT DA VIS PARK ROAD TCE SITE GASTONIA, NORTH CAROLINA Work Assignment No. 205-RALR-04PN MAY 2005 REGION 5 U.S. EPA CONTRACT NO. 68-W7-0026 Weston Solutions, Inc. Suite 100 5430 Metric Place Norcross, Georgia 30092 WESTON W.O. No. 20064.205.IO0.0JIO I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions. Inc., expressly for EPA. 1t shall not be disclosed, in whole or in part, without the express written permission of EPA. Section 2 3 4 February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: Table of Contents Revision: 0 Date: May 2005 TABLE OF CONTENTS Title INTRODUCTION .............................................................................................. 1-1 I. I 1.2 1.3 Purpose ..................................................................................................... 1-1 Background .............................................................................................. 1-I Groundwater Contaminant Description ................................................... 1-3 1.3.1 Contaminant Source Arca .................................................................. 1-6 1.3.2 Groundwater Plume Concentration and Extent .................................. 1-8 1.4 Site Geology and 1-lydrogeology .............................................................. 1-9 LONG TERM RESPONSE ACTION .............................................................. 2-I 2.1 Quarterly and Semiannual Groundwater Monitoring .............................. 2-2 2.2 First Year Quanerly L TRA Sampling Events (2002/2003) ..................... 2-5 2.3 Semiannual L TRA Sampling Events (August 2003/t'cbruary 2004/ August 2004) ................................................................................... 2-7 FEBRUARY 2005 LTRA SUMMARY ............................................................. 3-I 3.1 Groundwater Sampling ............................................................................ 3-I 3.2 3.3 3.1.1 3.1.2 3.1.3 Monitor Well Sampling Procedures ................................................... 3-I Community and Private Well Sampling Procedures .......................... 3-3 Field Quality Assurance/Quality Control Samples ............................ 3-3 Groundwater Elevation ............................................................................ 3-4 Groundwater Analytical Results .............................................................. 3-8 3.3.1 Groundwater Samples ........................................................................ 3-8 CONCLUSIONS AND RECOMMENDATIONS ........................................... 4-1 4.1 4.2 4.3 L TRA Results Summary .......................................................................... 4-I Conclusions ............................................................................................. .4-7 Recommendations ................................................................................. .4-10 K:\20064\205\Second semiannual 3rd yoar\Feb05Sem1annualRpt.doc RFW205-2A-AT JK I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. Figure 1-1 1-2 1-3 1-4 1-5 2-1 3-1 3-2 3-3 4-1 4-2 4-3 4-4 4-5 4-6 February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: Table of Contents Revision: 0 Date: May 2004 LIST OF FIGURES Title Page Site Map ................................................................................................................ 1-2 Residences Connected to City Water, September 2000 ....................................... 1-4 Residences Supplied with Carbon Filtration Units, August 2000 ........................ 1-5 Street Address Location Map ........................................... . ...... 1-7 Water Supply Sources Following RA ................................................................ 1-I 0 LTRA Monitor Well Sampling Nctwork ............... : .............................................. 2-3 Potentiometric Contour Map, Bedrock Aquifer February 2004 ........................... 3-7 TCE Concentrations in Groundwater Fehruary 2005 ......................................... 3-26 PCE Concentrations in Groundwater February 2005 ......................................... 3-27 Trichloroethene Concentration vs. Time, 2419 Davis Park Road, MW-5 .......... .4-2 Trichloroethcnc Concentration vs. Time, 2403 Davis Park Road, MW-14 ........ .4-3 Trichloroethcne and Tetrachloroethene Concentration vs. Time, 2719 Davis Park Road, MW-12 .............................................................................................. .4-4 Trichloroethenc and Tctrachlorocthenc Concentration vs. Time, 2232 Tate Street, MW-15 ..................................................................................................... .4-6 Trichlorocthenc and Tetrachloroethenc Concentration vs. Time, 2639 Springbrook Street, MW-9 .................................................................................. .4-8 Trichloroethene and Tetrachloroethene Concentration vs. Time, 2800 Davis Park Road, MW-I 8 .............................................................................................. .4-9 K:\20064\205\Second semiannual 3rd year\Feb05Semiannu.i1Rpl.doc II RFW205·2A·AT JK I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. Table 1-1 2-1 3-1 3-2 3-3 3-4 4-1 LIST OF TABLES Title February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: Table of Contents Revision: O Date: Aprll 2005 Residential Well Historical Analytical Results .................................................. 1-I I LTRA Monitor Well Sampling Network .............................................................. 2-4 Passive Diffusion Bag Sampler Placement .......................................................... 3-2 February 2004 Sc1niannual LTRA QA/QC Laboratory Analytical Results Su 111 mary ............................................................................................................... 3-5 February 2004 Semiannual LTRA Groundwater Level Data ............................... 3-6 LTRA Laboratory Analytical Results Summary, April, September, December 2002, March, August 2003, February, August 2004, and February 2005 ............ 3-9 Monitor Well Physical Conditions .................................................................... .4-I I LIST OF APPENDICES APPENDIX A -Log Notes/Field Water Quality Data Sheets APPENDIX B -Laboratory Analytical Reports K:\2006~\205\Second semiannual 3rd year\Feb0~SemiannualRpt.dor, Ill RFW205·2A·AT JK '. I·., I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. I.I PURPOSE SECTION I INTRODUCTION February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 1 Revision: O Date: May 2005 Weston Solutions, Inc., (WESTON@) has been tasked hy the U.S. Envirnnlllclllal Prntcction Agency (EPA) Region 4 10 pcrfor111 the Long Tenn Response Action (L TRA) al the Davis Park Road Trichloroethenc (TCE) Site in Gastonia, North Carolina. The work is conducted under the Region 5 Re111edial Action Contract (RAC) Program and implemented as a contract crossover to Region 4, Contract Number 68-W7-0026, Work Assignment Number 205-RALR-04PN. The current L TRA includes monitoring the bedrock aquifer contaminant plume by sampling a network of bedrock wells for volatile organic co111pounds (YOCs) on a quarterly basis for one year, semiannually for two years, and annually thereafter for 27 years, pending review of analytical results, to ensure the plume is in fact naturally attenuating. 1.2 BACKGROUND The Davis Park Road TCE Site is located within the Gastonia Extra Territorial Jurisdiction area along Davis Park Road, south of Hudson Boulevard and north of Blackwood Creek in the southwestern portion of Gastonia, Gaston County. North Carolina. The site consists of an area of reportedly contaminated soil behind a building that is located at 2307 Davis Park Road (Davis Park Auto Repair), and a plume of contaminated groundwater that emanates from this property and extends south along Davis Park Road to Blackwood Creek. The site also includes the Cedar Oak Park subdivision located on the cast side of Davis Park Road within the confines of Cedar Oak Circle as well as areas along the western side of Davis Park Road. Figure .1-1 presents a site map for the Davis Park Road TCE Site. K;\20064\205\Second semiannual 3rd year\Feb05Semiannua1Rp1.doc 1-I RFW205-2A-AT JK - rr ~ ! z ~ ~ - [') ----- 0 [J ------ 'i::> 0 /,....""'-'----"'=e!'"'oo"'-""'"~"--"""""''----- (J "v d CJ DD D o"· RICHLAND AVENUE PARK \J AUTQ-, □ 0 ~ 0 = @EPAtfr GLENRAVEN AVENUE Cl - □ □ □ ao tJ 0 0 0 [] 0 l Ilg □• 0 \1G ,, ,, ,, ,, ;\t::::i 0" FIGURE 1 ° O ,=--'==◊=·=□= 0 SITE MA~□□ D DAVIS PARK ROAD TCE SITE 0 - D -- □ 0 Approximate Scale In Feet - I ~ ._ _______________________________________ ..'.o:'._ ___ _:e~o~o ____ 21:20~0:J GASTONIA, NORTH CAROLINA - I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 1 Revision: O Date: May 2005 The plume of contaminated groundwater underlies residential areas along the plume's entire horizontal extent. The contaminant levels and aerial extent arc further described in Section 1.3.2. At the time of the discovery of contaminants in the groundwater (March 1990), a majority of the residences throughout the site were supplied water by residential water supply wells. As a result of the continued migration of the plume, groundwater supplying many of these residential water wells became contaminated with the chlorinated hydrocarbons found in the plume. Since that time. several neighborhoods within the site have been connected to the Gastonia public water supply to reduce the potential health threat from the contaminants. In 1996. many of the houses within the Hedgewood Circle neighborhood, which borders the northern edge of the site, were connected to the public water supply. In late 1997 and early 1998, after petitioning the city for water services, all of the homes in the Ce'dar Oak Circle subdivision, which dominates the eastern side of the site, were connected to the public water supply. Approximately 130 homes within the site were receiving water from residential water supply wells prior to Remedial Action (RA) activities. Over half of these homes (approximately 75) had water supply wells that were or could potentially be affected by the contaminant plume as depicted in the 1998. Remedial Investigation (RI) report. In August 2000, five of these residences were supplied with carbon filtration units, and in September 2000, sixty-four (64) of the residences were connected to the Gastonia public water supply as part of the RA to execute the provisions of the Record of Decision (ROD) for the site. The locations of the residences connected to the Gastonia public water supply and the carbon filtration units arc presented in Figures 1-2 and 1-3, respectively. 1.3 GROUNDWATER CONTAMINANT DESCRIPTION This section describes the potential source area of the contamination, current knowledge of the groundwater plume, and the extent of the plume. K:\20064\205\Second seminnnual 3rd year\Feb05Semiannua1Rp1.doc 1-3 RFW205-2A-AT JK - ,r \. - - 0 <} I:::) a o a D O a 0 0 0 0 0 (] 0 'u (/ -- 0 {J DAVIS PARK ROAD - - {J 0 {) CJ O Cl 0 CJ CJ ~o /j. 0 0 CJ ~,,,, ~ \] IJ' 0 0 " I a D 0 1 0 I [J" - - - -- - 0 00 c::::i O 'i] Q 0 t; ~ I;; PURITAN ST. c:, ~ ~ la ~ a t; ~ z JO < ¢ Q □ w 2 " 0 ◊ oo ! D D I <:::> □ D ◊ 0 DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA RESIDENCES CONNECTED TO CITY WATER SEPTEMBER 2000 FIGURE 1-2 - - -----r LEGEND RESIDENCE RESIDDICE CONNECTED TO OTY WATER SEPT. 2000 ~JWJ!~l " DRAWN: DATE: W.O. NO.: J. MILLER 2/12/01 20064-138-100-0930 DES. ENG.: DATE: CAD NAME: fie 1 2.dwa ./ ------------------_.,.. IJ O t;;:l LEGEND o. 0 \s CJ RESIDENCE RESIDENCE SUPPLIED 1M1H CARBON FlLTRATION UNITS Cl Cl t:J C:, 0 t::::, 0 0 t:J □ 0 6C:io DAVIS PARK ROAD c:i a □ DAVIS PARK ROAD Oo If 0 I ¾ J 0 0 CJ t:::::, CJ 0 Ooo Q 0 J, CJ lo [j <:J (;::) 0 a 0 a a Q 0 0 0 oi oO D Of 0 a " w 0 0 0 0 0 ~ 0 0 (l 0 ~ <? ~ D I D ~ D w ~ ~ 0 ◊ 0 □• l ~ 0 13 □ i <::> • • 0 c; <? ~ 0 <:, [?" 0 □ ◊ Q C / DAVIS PARK ROAD TCE SITE ~ ... GASTONIA, GASTON COUNTY, NORTH CAROLINA RESIDENCES SUPPLIED WITH CARBON FILTRATION UNITS DRAWN: DATE: W.O. NO.: AUGUST 2000 J. MILLER 2/12/01 20064-138-100-0930 DES. ENG.: DATE: CAD NAME: ' FIGURE 1 3 fig 1 2.dwg I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, lnc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. 1.3.1 Contaminant Source Area February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 1 Revision: 0 Date: May 2005 According to preliminary site investigation reports (sec RI Report, I 998, for summary), a groundwater sample was collected on 31 March 1990 from a supply well within the Cedar Oak Park subdivision by Gaston County Environmental Health representatives as part of a routine sampling procedure in accordance with "Community Well Rules." Analysis of the sample revealed concen1ra1ions ofTCE (34.9 micrograms per lilcr lµg/11), lc\rachluroclhcne (PCE) (21.7 µg/1), and chloroform (9.2 µg/1). Analytical results for a confirma1ion sample collected from this well on I 7 April 1990 were similar to the original sample. Groundwater samples collected from three nearby private wells in May 1990 by the Gaston County Health Departmcnl indicated !hat the groundwater was contaminated with TCE. The highest concentration of TCE (IO 1.4 µg/1) was detected in a sample collected from the private well located at 2419 Davis Park Road (sec Figure 1-4), 200 feet south of the Davis Park Auto Repair facility (located at 2307 Davis Park Road). The current EPA Drinking Water Maximum Contaminanl Level (MCL) for TCE and PCE is 5 µg/1. Current State (North Carolina Department of Environment and Natural Resources [NCDENR]) MC Ls for TCE and PCE arc 2.8 ~tg/1 and 0.7 µg/1 respectively. The Environmental Services Division or EPA collected groundwater samples from the contaminated wells along Davis Park Road and within the Cedar Oak Park subdivision in July 1990. TCE was detected at concentrations of 82 ftg/1 and 31 ftg/1 in groundwater sampled from the private well located at 2419 Davis Park Road and a Cedar Oak Park subdivision well (2719 Davis Park Road), respectively. Additional investigations and groundwater sampling events pnor to the initiation or the RI continued to reveal levels of contaminants above State and Federal drinking water standards. Investigation activities focused on a possible source location(s). Several potential sources of the K:\20064\205\Second semiannual 3rd year\Feb0SSemiannualRpt.doc 1-6 RFW205-2A-AT JK - ~ §] ~ ~ z ~ ;, I - - - - [)-- FIGURE 1-4 STREET ADDRESS LOCATION MAP DAVIS PARK ROAD TCE SITE GASTONIA, NORTH CAROLINA - - - 0 0 0 ◊ - - 0 <:>° " ,, " ,, ,, ,, ,, r: □ ,,o 11407 " 29'J9Sp tewif,svsie,£' II ~ n !n " ~ " ~ II g;; II ~ // [ 0 " • 2415 S"t'fl'ld 0 0 0 0 'g 0 • c18 0 □~ A - - - DD Dao t;i □ \1G 0 0 ,, □ ,, ,, 0 ,, ,, 1 ~ 2833 o,wis Park ooo ', 0 D DD 2837 Davrs Park □ 0 - - 0 -- D Approximate Scale In Feet 600 - 1200 ~--------------------------------------------------------------------------' - I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. 11 shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Slte Section: 1 Revision: 0 Date: May 2005 contamination at the Davis Park Road TCE Site were reviewed. Consideration of proximity, regional and local groundwater !low directions, and groundwater sample analytical data indicated that the Davis Park Road Auto Repair facility was the most likely contaminant source at the Davis Park Road TCE Site (NCDENR Site Inspection. 1993). As a result of these findings and iii an effort to further define the source area for the water supply well conlaminants. environmental assessments were conductcdi including the Site Inspection Addendum (SI) (May 1993), Expanded Site Investigation (ES!) (May 1994), and RI (1996- 1998). The RI report summari1/.es the source investigation as follows: " ... according to data generated from this and previous investigations, solvents such as PCE or TCE were introduced to the environment from the property at 2307 Davis Park Road. This 'spill' migrated through the vadosc zone and the saprolitc/partially weathered rock aquifer, and into the bedrock aquifer. Once introduced into the environment, various biophysiochemical processes acted on the contaminants to reduce the overall concentration as well as spread the contaminant mass throughout various. matrices. Currently, the YOC contaminants, principally TCE and PCE, appear to be present only within the bedrock aquifer and may continue to be drawn towards active residential wells scattered throughout the site, specifically those wells to the west of Davis Park Road." 1.3.2 Groundwater Plume Concentration and Extent Five potential sources for water supply were identified in the Davis Park Road Area and presented in the RI report. These include the following: City of Gastonia Public Water Supply System; City or Gastonia Restricted Use Water Linc; water supply well as part of a Community Water System; a water supply well as part of a Private Well System, and private water supply wells. Nine monitoring wells were installed during completion or the RI (MW-IS, MW-ID, MW-2S, MW-2D, MW-3S, MW-3D, MW-4S, MW-4D, and MW-5S). Following connection to K:\20064\205\Second se111iannual 31d year\Feb05Semiann11alAp1 doc 1-8 RFW205-2A-AT JK I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 1 Revision: O Date: May 2005 City Water in August 2000, seventeen private wells were abandoned, seven wells were converted into monitoring wells (CW-I through CW-7), and five residences were supplied with carbon filtration units (2400 Skyland, 2419 Davis Park Road, 2717 Davis Park Road, 2839 Davis Park Road, and 2639 Springbrook). Figure 1-5 details the locations and water supply source of residences within the vicinity of the Davis Park Road TCE Site updated to include activities completed as part of the 1998 RI and as part of the 2001 RA to execute the provisions of the ROD for the site. A sum1nary of analytical clata for the primary constituents of concern (PCE and TCE) detected in groundwater sampled at the Davis Park Road TCE Site is presented in Table I- I. Analytical data was obtained for groundwater sampled after August 200 I from the 5 residences supplied with carbon filtration units as part of the RA 10 execute the provisions of the ROD. This data is included for PCE and TCE in Table 1-1. As descrihed in the 1998 RI, the contaminant plume was centered along Davis Park Road from Glenraven to Blackwood Creek and underlies areas approximately 500 feet to the cast and west of Davis Park Road. 1.4 SITE GEOLOGY AND HYDROGEOLOGY The geologic profile across the site generally consists of a saprolitc layer, underlain by a partially weathered rock zone and the underlying fractured crystalline bedrock. The saprolitc is a silty, clay-rich, residual material derived from in-place weathering of rock. The saprolitc zone appears to he thickest (approximately 80 feet) near the ridge crest along the northern edge of the site, thinning towards the lower elevations or stream valleys to approximately 20 feet in thickness. A partially weathered rock layer typically underlies the saprolite, and ranges in thickness from approximately 5 to 25 feet. This layer is composed of saprolite and fragments of weathered bedrock. The bedrock is generally observed to be a fractured quartz biotite granite or granitic gneiss. K:\2006412051Second semiannual 3rd year\Feb05SemiarmuaIRpt.doc 1-9 RFW205-2A-AT JK • • 0 • --• I I ENNY -,,,. •• I ·~ •• II ♦ □• \1 I I 0 ~ -\:,) l::.:.J \I Cl .® c:i®\ ' '1 ' ' I ci ■----+---+-------------1 APRVD. DA TE: REVISION 0 • -0 G C> ◊ ◊ 0 <:> \) <:> <:> \) \ \) \\ ® \ o ·~□ L' i.:, -•--; D wi ,.~ LJ ·..-· SPR1N08ROOK STREET Ill ''] \®' ._::;· ~/ .-.;;,;~ DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA WATER SUPPLY SOURCES FOLLOWING RA FIGURE 1-5 ♦ .- a • n ~ I ; z ! ~ . < ~ C m i m 0 -- DRAWN: DATE: J. MILLER 6/5/02 0 - ~ '' I • \ 8 S! n ~ 3"1~ ml0::1.Ll:l'l'H . ,;. -- D I I D [ ; • • • • • • m m m m m m 00 00 00 00 00 00 " " " " " " m m m m m m z z z z z z 0 0 n 0 0 0 m m m m m m " " " " " " ~ ~ ~ ~ 0 n z ~ ' ' ~ • r n • • m z ~ ; " m rn ~ ,I n • " G) m C " m 0 z 0 rn z ! ~ ~ ~ " ~ 0 0 z i ~ C n 0 " " ~ ~ r m " G ~ ~ 0 " ' m z • 0 " C • m ~ • • z " r a " " " • " ~ " C n m " § " C m 0 00 m ~ £ m ~ m ~ m ~ • 0 00 z " W.0. NO.: 20064-138-100-0930 LAYOUT: 2-1 CADD FILE: SHEET: OF wa\ersupply.dw 1 1 .J -- - -- -- - - - --This document was prepared by Weston Solutions, Inc. expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. Address Date PCE TCE Address Date PCE TCE Oo<o PCE -- ID Screen Date PCE TCE 2501 Briaroak 6/14/90 ND ND 2302 Hedgewood 5/7/96 .66AJ ND 2618 Puritan 4/27/90 ND ND MW-1S 20-30 1/13/98 ND ND 2510 Briar Oak 5/6/96 ND ND 2314 Hedgewood 1/14/98 ND ND 2612 Puritan 5/7/96 ND ND MW-1D 40-75 1/13/98 ND ND Address 2329 Skyland Date PCE ICE Address Date PCE TCE J · Estimated Value A -Average Value ND = not detected 7/10/90 5/7/96 trace ND trace 18A 2407 Skyland 4/27/90 5fi/96 ND ND ND 2.6A All results reported in micrograms per liter 2241 Cedar Oak 6/9/92 5/7 /96 1K ND ND ND Table 1-1 Residential Well Historical Analytical Results Davis Park Road TCE Site 2326 Cricket 5/7/96 ND ND 148 Grassy 5/7/96 ND ND 2322 Hedgewood 2347 Hedgewood 2363 Hedgewood 2375 Hedgewood 1511 Jackson 5/7/96 6/14/90 5/7/96 6/27/91 1/13/98 5/6/96 ND ND ND 1.1 ND ND ND ND ND ND ND 0.97AJ . 2704 Puritan 2720 Puritan 2725 Puritan 2230 Richland 2<!25 Rotan 5/6/96 517196 4/27/90 5/7/96 2/3/93 517/96 ND ND trace ND ND ND ND ND trace ND ND ND MW-2S MW-2D MW-3S MW-3D MW-4S MW-4D 5.15 21-54 64-74 87-150 36-46 130-142 1/14/98 1/13/98 l/13/98 2/25/98 1/15/98 1/15/98 ND 6 ND ND ND ND ND 17 ND ND ND ND 2308 2314 2304 Skyland Skyland Skyland 2309 Skyland 3/7/95 3fi/95 5/23/94 4/19/93 5/7/90 5/6/96 J ND ND ND 0.85 0.52J 0.91 0.75 0.72 ND ND 2415 Skyland 2634 Skyland Skyland Community Well 5/7/96 4/27/90 5/6/96 4/27/90 7/18/93 9/8/93 ND trace ND ND ND 1K ND trace ND ND 2.4 1K K:\20064\205\Second Semiannual 3rd year\F eb05Semiannua1Apt-tbls.xls 1-11 8/24/00 ND 7.4 MW-5S 9-19 1/14/98 ND ND 8/24/00 ND ND - -- -- - 2639 Springbrook 2232 Tate 10/17/00 1/24/01 5/9/01 8/10/01 11/20/01 2/25/98 ND ND ND ND ND ND 8.2 8.8 10 8.6 6.8 34 2400 Skyland 10/17/00 1/24/01 5/9/01 8/10/01 11/20/01 ND ND ND ND ND ND ND ND ND ND --- - --- - -- - - - - -This document was prepared by Weston Solutions, lnc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. ~:E 627 DPR 2212 DPR 2231 DPR 6/11/90 6/11/90 6/14/90 7/13/90 1/25/94 ND trace ND 1K ND CE ND 1K ND trace ND Address 2307 DPR Date 8/8/91 8/13/92 4/19/93 2/10/98 2/10/98 PCE ND ND ND ND ND TCE 301 0.75 172 ND ND Address Date 4/27/90 517190 6/21/90 7/6/90 8/23/90 PCE 1K 0.85 1K ND 1K TCE 101.4 NA 134.3 82 116.3 Address 2425 DPR Date 517190 5/15/90 PCE 0.31 trace TCE 8.4 6.8 Address 2509 DPR 2603 DPR Date 517/96 6/11/90 PCE ND 1K TCE ND 1K Address 2723 DPR Date 6/11/90 PCE ND TCE ND E,J -Estimated Value A -Average Value 5/6/96 .76AJ ND 7/13/90 2/3/93 ND J 7.0 30E 6/14/90 5/6/96 ND ND ND ND 2800 DPR 5/23/90 5/6/96 ND 0.62AJ ND ND K -Actual value is known to be less than value given ND -Not detected 3/19/93 trace 8.0 8/24/00 2.2 2.8 6/14/90 1K 1.2 517196 517190 ND 0.25 ND 5/15/90 5/20/90 trace trace 44.5 24.3 10/9/90 1/30/91 ND 1K 68AJ 84.2 1/25/94 5/30/95 ND ND 11 NA 2717 DPR 10/17/00 1/24/01 0.68 1.8 0.79 2.1 2816 DPR 5/6/96 2/10/98 6.4A 10 14A 18 K:\200641205\Second Semiannual 3rd year\Feb05SemiannualRpHbls.xls Table 1-1 (continued) Residential Well Historical Analytical Results Davis Park Road TCE Site 2301 DPR 2304 DPR 5/15/90 7/13/90 1/25/94 517196 1/14/98 5/23/94 trace trace ND ND ND ND 44.5 37.1 ND ND ND 0.91 2403 DPR 7/12/90 1/30/91 7/23/92 4/19/93 9/24/93 1/25/94 trace trace ND ND ND ND 37.1 28 17 12 7.3 10 2419 OPA 5/20/91 2/3/93 6/21/93 9/24/93 1/25/94 8/5194 1K 0.48 0.56E ND ND ND 66.2 54 23 30 38 NA 2503 DPR 517/96 5/15/90 3/19/93 5/23/94 ND ND ND ND 3.0A ND 1.5 0.65 5/9/01 8/10/01 11/20/01 3/31/90 5/1/90 6/21/90 1.3 1.2 0.96 23.7 18.9 1.4 1.2 1.1 34.9 51.8 51.8 2839 DPR 8/24/00 10/17/00 1/24/01 5/9/01 8/10/01 11/20/01 ND ND ND ND ND ND ND ND ND ND ND ND 1-12 5/30/95 1/16/98 ND ND NA ND 5/30/95 517196 2/10/98 8/24/00 ND ND ND ND NA 15A 8 2.4 2719 DPR 7/6/90 8/23/90 10/9/90 5/17/93 12 20.9 14 13.7 31 56.1 41 44.6 - - -- 10/17/00 1/24/01 5/9/01 8/10/01 11/20/01 ND ND ND ND ND 2.4 2.6 2.6 2.2 1.8 1/25/94 1/25/94 517/96 1/14/98 18 17 10 14 51 50 32 32 I I I I I I I I I I I I I I "I t:: J This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. SECTION 2 February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 2 Revision; 0 Date: May 2005 LONG TERM RESPONSE ACTION The ROD for the Davis Park Road TCE Site (Septemher 1998) states that following initiation of a natural attenuation study, groundwater monitoring will be conducted on a quarterly basis for three years and annually for the next 27 years. First year LTRA sampling n:sults indicated a continued decrease in contaminant concentrations as the plume migrates south and away from the source area. Additionally, contamination concentrations did not vary significantly between sequential quarters for any of the wells in the monitoring network. It was therefore recommended that the sampling program be reduced from quarterly to semiannual monitoring after the first year of the LTRA. Results from the quarterly sampling and first three rounds of semiannual sampling are summarized below. Results from the fourth and most recent semiannual event are summarized in Section 3.0. Data obtained from the long term groundwater monitoring are used to evaluate natural attenuation of contaminant constituents within the bedrock aquifer plume at the Davis Park Road Site following provision of city water to 64 residences in August 2000. In April 2002 a baseline sampling event was conducted to establish current conditions and to evaluate the need for installation of additional wells for the LTRA. Based on analytical results, it was determined that natural attenuation was occurring at rates consistent with expectations, and that the wells currently available for sampling were sufficient to evaluate natural attenuation in long term performance monitoring. A Monitored Natural Attenuation Plan (submitted to EPA in October 2002) was developed to include sampling a network of bedrock wells for VOCs to effectively characterize contaminant levels (VOCs) in the bedrock aquifer within the contaminant plume as well as the surrounding area for the potential migration of contaminants from within the existing groundwater plume. K:\20064\205\Second semiannual 3rd year\Fab05SemiannualRpuJoc 2-1 RFW205-2A-AT JK I I O· D 0 I m I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 2 Revision: O Date: May 2005 The eighteen bedrock wells initially included for groundwater sampling in each LTRA monitoring event included four bedrock monitoring wells installed in December I 997 (MW-I through MW-4), the five private wells provided with carbon filtration units in August 2000 (MW-5 through MW-9), two community wells located west or Davis Park Road (MW-10 ;ind MW-11), four converted wells (MW-12 through MW-15), and three private wells (MW-16 through MW-18). Monitoring wells MW-2, MW-5, MW-6, MW-9, MW-12. MW-15, MW-16. MW-17, and MW-18 were selected lo provide groundwater qu;tlity inform;1tion within the contaminant plume. The remaining monitoring wells (MW-I, MW-3, MW-4, MW-7, MW-8. MW-10, MW-I I. MW-13, and MW-14), located outside the contaminant plume, were selected to provide evidence or potential contaminant migration. Beginning with the first year fourth quarter sampling event, MW-13 was removed from the sampling network and replaced with MW-I 9, located south of the site, just outside the contaminant plume. Additionally, following the fourth quarter sampling event, two bedrock wells were installed west of the plume to monitor the area between the plume and the currently pumping community wells to the west or the site (MW-IO and MW-11). These wells were incorporated into the monitoring network and are designated MW-20 and MW-21. Figure 2-1 provides the locations of the monitor well sampling network. Table 2-1 provides monitored natural attenuation sample designations cross-referenced with addresses and former designations. 2.1 QUARTERLY AND SEMIANNUAL GROUNDWATER MONITORING The purpose of quarterly and semiannual groundwater monitoring is to verify the following: • Thal natural attenuation is occurring at rates according to expectations, • No changing conditions arise that might reduce efficacy of this remedy, • The continued absence of toxic and/or mobile transformation products, • Verification that the plume is not expanding,· K:120064\205\Sacond semiannual 3rd year\f'eb05Semiannua1Rpt.doc 2-2 RFW205-2A-AT JK L!!!I ---~····•-·- □ □ D C) D CJ \ □• s ' APRVD. DATE: ..__ \) 0 VJ ~ 0 ' <> C> CJ 0 \) \\ • \ ~ ~ ~ \ .P i ~ C 0 CJ C \ C C •• G 0 \ 0 ~ 000 CJ □ o □□ o o D ~\ ~ .. D 0 0 0 0 0 ~ ~o \ ~----ii ,, ..__ ---· \ □ \ / ~ ..__ D REVISION □ DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA L TRA MONITOR WELLS SAMPLING NETWORK FIGURE 2-1 -CJl 0 a ◊ 0 {) □ [j' 0 ~D D z I □ D I □ i'.J m D D D 'i) D D I □ ~□ □ ~ m D □ □ □ D □" - DRAWN: DAlE: J. MILLER 6 5 02 LAYOUT: CADD FIL£: 2-1 ovispork.dwg 0 = 8 CJ a~•/ ~ 8 ~ ~ ~ 3,\11:10 OM0.:1.11:IVH --- ♦ W.O. NO.: 20064-138-100-0930 SHEET: OF 1 1 I I I I I I I I I 0 D I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. Sample ID Status MW-I monitor well MW-2 monitor well MW-3 monilor well MW-4 monitor well MW-5 carbon unit MW-6 carbon unit MW-7 carhon unit MW-8 carbon unit MW-9 carbon unit MW-10 COlllllHlllilv \\'l'II MW-I I COllllllllllity wl'I] MW-12 converted well MW-13 converted wt.:11 MW-14 converted well MW-15 converted well MW-16 private MW-17 rrivate MW-18 private MW-19 private MW-20 monitor well MW-21 monitor well Table 2-1 L TRA Monitor Well Sampling Network Davis Park Road TCE Site Former Dcsignation(s) Street Address MW-ID S of Cedar Oak MW-2D 2816 Davis Park MW-3D Lcnc.Jora Drive MW-4D 2415 Skyland CO-I. PW-2. 121 2419 Davis Park CO-13. 235 2717 Davis Park 298 2839 Davis Park 252 2400 Skyland 182 2639 Springbrook CO-2. 300 2634 Skyland CU-3. 269 Briar Oak CW-5 Cedar Oak Subdivision 2719 Davis Park CW-6 Cedar Oak Subdivision 2241 Cedar Oak CW-4, 49 2403 Davis Park CW-7. 175 2232 Tate CO-5. 195 2725 Puritan CO-14, 286 2816 Davis Park 192 2800 Davis Park 277 2833 Penny Park -Lendora Drive (north of Sky land) -Lendora Drive (south of Sky land) 2-4 K:\20064\205\Second Semiannual 3rd year\Feb0SSemiannualRpt-tbls.xls Depth (feet below !.'round surface) 75. 54 150 142 187 Unknown Unknown Unknown Unknown Unknm\'ll 270 112 125 74 145 Unknown Unknown Unknmvn Unknmvn 173 135 I I I I I I n D I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. • Verification that there is no impact downgradient, • Detection of any new releases, and February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 2 Revision: 0 Date: May 2005 • Verification of attainment of remediation objectives. The samples arc collected in accordance with the rollowing documents: • Final Monitored Natural Attenuation Plan. dated October 2002. • U.S. Environmental Protection Agency Science and Ecosystem Support Division (EPA- SESD), Region 4, revised Environmental Investigation Standard Operating procedure and Quality Assurance Manual (EISOPQAM). May 1996, and • U.S. Geological Survey, User's Guide for Polyethylene-Based Passive Diffusion Bag Samplers to Obtain Volatile Organic Compound Concentrations in Wells, 200 I. All samples are analyzed by laboratories in the Contract Laboratory Program (CLP). Samples arc I analyzed for VOCs using EPA Method 8260. I 2.2 FIRST YEAR OUARTERL Y LTRA SAMPLING EVENTS (2002/2003) I The first quarter sampling event, performed in April 2002, was originally developed as the baseline event to establish current conditions and to evaluate the need for installation of I additional wells. Based on analytical results, it was determined that the wells currently available for sampling were sufficient to evaluate natural attenuation in long term performance I monitoring. Thirteen of the 18 wells selected for the sampling network and two additional wells were sampled in the baseline-sampling event. All I 8 wells in the LTRA sampling network were I sampled during the second and third quarter sampling events, performed in September and December 2002, respectively. I I I During the fourth quarter sampling event, performed in March 2003, monitor well MW-13 could not be sampled due to hostile property owners. The residence at 2833 Davis Park Road was K:1200641205\Second semiannual 3rd year\FebOSSemiannualRpt.doc 2-5 RFW205-2A-AT JK I I I I I g 0 R I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part. without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 2 Revision: O Date: May 2005 sampled instead, and incorporated into the monitor well network as MW-I 9. Because the current owners of the property were not willing to allow samplers to pass through their yard to access the well, and because VOCs have not historically been detected in groundwater sampled from the well, MW-13 was removed from the monitor well network permanently and replaced with MW- 19. All of the remaining 17 wells in the LTRA sampling network were sampled during the fourth quarter sampling event. Depth to water was recorded where possible (MW-I through MW-4, MW-12 through MW-15) prior to sampling. Field parameters (pH, specific conductivity, temperature, dissolved oxygen, oxidation reduction potential, and turbidity) were also recorded. The potentiometric map for the bedrock aquif"cr in first through fourth quarter LTRA sampling events indicated a grnundwatcr llow direction in the bedrock aquifer ranging from south to cast across the site, with the strongest component of llow to the southeast. This is consistent with previously reported data. TCE and PCE concentrations detected in groundwater during the first through fourth quarter sampling events suggest the contaminant plume is migrating slightly to the west and also southeast. Concentrations were significantly less than those detected in 1990 for wells in the northern portion of the plume. However, concentrations increased slightly in wells to the west and southeast. Levels were consistent with a naturally attenuating plume that is shifting due to pumping (community wells on Skyland Drive and Briar Oak Drive located west of the site) and to a groundwater llow direction trending to the southeast and Blackwood Creek. First through fourth quarter analytical results arc detailed in the LTRA Second, Third, and Fourth Quarter Sampling Event Reports submitted to EPA in January, April, and June 2003, respectively. K:\20064\205\Second somi.innual 3rd yenr\Feb05Semiannua1Rp1.doc 2-6 flFW205-2A-AT JK I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 2 Revision: O Date: May 2005 2.3 SEMIANNUAL LTRA SAMPLING EVENTS (AUGUST 2003/FEHRUARY I 2004/AUGUST 2004) I D I I I I I I I I I I Following the first year of quarterly sampling at the Davis Park Road Site. two additional monitoring wells were installed between the contaminant plume and the currently pumping community wells MW-10 and MW-I I. These wells, designated MW-20 and MW-21, were incorporated into the LTRA monitoring well network and sampled in August 2003. February 2004. and August 2004. During these sampling events, the nine wells in the monitor well network that could he accessed at the well-head were sampled using both low-llow technology and passive diffusive bag (PDBJ samplers. PDBs were evaluated and found to be an effective sampling alternative to the low-llow method of sampling. PDBs were subsequently recommended as the select method for sampling monitoring wells that can be accessed for the remainder of the LTRA. PDBs arc polymer membranes lilied with deionized water that are placed at select depths into the groundwater column. Organic analytes permeate the membrane, diffusing deionized water out of the device until equilibrium is reached with the surrounding groundwater. Advantages to using PDBs verses traditional sampling methods include decreased spending on labor and equipment and elimination of containing and disposing of sampling purge and decontamination lluids. The potentiometric map for the bedrock aquifer based on the semiannual L TRA sampling events indicated a groundwater llow direction in the bedrock aquifer ranging from south to cast across the site, with the strongest component to the southeast, consistent with previous reports. However, the addition of three new survey points (MW-15, MW-20, and MW-21) provided data indicating that to the north of the site there is also a west to southwest component to the groundwater llow. This llow component was attributed to the actively pumping community wells to the west of the site. K:\20064\205\Second semiannual 3rd year\Feb05Semiannua1Rp1.doc 2-7 RFW205-2A-ATJK I I I I 0 I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Par1< Road TCE Site Section: 2 Revision: O Date: May 2005 TCE and PCE concentrations detected in groundwater during the semiannual L TRA sampling events continued to suggest the contaminant plume is migrating slightly to the west and also to the south. TCE and PCE levels were consistent with a naturally attenuating plume that is shifting slightly due to pumping and to a groundwater !low direction trending to the southeast. The semiannual analytical results arc detailed in the LTRA August 2003, February 2004, and August 2004 Semiannual Sampling Event Reports submitted to EPA in December 2003, April 2004, and November 2004, respectively. K:\20064\205\Second serniannual 3rd year1Feb05SemiannuuIRpt.doc 2-8 RFW205-2A-AT JK I I u g D u This document was prepared by Weston Solutions. Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 3 Revision: 0 Date: May 2005 SECTION 3 FEBRUARY 2005 LTRA SUMMARY Section 3 of this report su111111anzes activities conducted as part of the fourth se111iannual sa111pling event for the Davis Park Road TCE L TRA. 3.1 GROUNDWATER SAMPLING I 3.1.1 Monitor Well Sampling Procedures I WESTON 111obilized lo the site the week of I February 2005. With the exception of one location, MW-6, which could not be accessed, groundwater sa111ples were collected fro111 all wells in the I 111nni1or well network from I February through 2 February 2005. PDB sa111plers were used lo sample the nine 111onitoring wells that can be directly accessed al the Davis Park Road Site (MW- I I through MW-4, MW-12, MW-14, MW-15, MW-20, and MW-21). Hanger assemblies, to which PDBs in protective 111esh were attached, were placed al selected depths along I polypropylene ropes for each of the accessible wells during the August 2004 sa111pling event (see Table 3-1 ). I During the February 2005 sampling event, each of the PDBs was pulled and pierced with a s111all I discharge tube which allowed the transfer of the groundwater lo 40 milliliter septa vials that contained hydrochloric acid preservative. After the sampler bag was disconnected fro111 the rope, I a new filled PDB sampler was attached and placed downhole at the same depth. The PDB will I I I K:\20064\205\Second semiannual 3rd year\Feb05Semiannua1Rpt.doc 3-1 RFW205-2A·AT JK I I 0 I I I I I I I I I I I I I This document was prepared by Woston Solutions, Inc., expressly !or EPA. It shall not be disclosed, in whole or in part, wi1hout the exprnss wrilten permission of EPA Table 3-1 Passive Diffusion Bag Sampler Placement Davis Park Road Well ID Former ID MW-1 MW-1D MW-2 MW-2D MW-3 MW-3D MW-4 MW-4D MW-12 CW-5 MW-14 CW-4 MW-15 2232 Tate MW-20 North Lendora Dr. MW-21 South Lendora Dr. ft bgs = feet below ground surface . ft msl = feet above mean sea level Screened Interval (tt bgs) 40-75 21-54 86-150 130-142 68-103 ?-74 ?-143 163-173 125-135 :l-2 K:\20064\205\Second Semiannual 3rd year\Feb05SerniannuaIRpt-tbls.xls Sampler Elevation Depth (It msl) (ft bgs) 688 58.5 685 36 746 108 740 129.5 707 75 768 68 721 135 768 170 721 132 Sampler Elevation (It msl) 629.5 662 659 610 627 705 591 598 589 I I g D 0 D I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 3 Revision: 0 Date: May 2005 then equilibrate with the surrounding groundwater for the next sampling event (scheduled for February 2006). All samples were placed on ice prior to shipment under CLP protocol to EPA -A4 Scientific, located in The Woodlands, Texas, for VOC analysis using EPA Method 8260. 3.1.2 Community and Private \Vcll Sampling Prorcdurcs Community wells MW-10 and MW-I I and private wells MW-5 through MW-9 and MW-16 through MW-19 were purged and sampled from the in-situ pumping system, but prior lo any filter mechanism that may have been in place. Wells were purged al approximately I gallon per minute for a period of approximately 15 minutes. Specific conductivity, pl-I, temperature, dissolved oxygen, and oxidation/reduction potential were measured approximately every 5 minutes during the purge process. Purging continued until parameters were stable for three successive readings, and samples were collected directly into pre-labeled, pre-preserved 40- milliliter (ml) glass vials. Water quality data sheets and field log notes arc provided in Appendix A. 3.1.3 Field Quality Assurance/Quality Control Samples One rinse blank, one trip blank, two duplicates and one lab-grade deionized water sample were I collected during the sampling event. The rinse blank was collected by pouring laboratory-grade deionized water into the PDB and collecting directly into pre-labeled, pre-preserved 40-ml glass I I I I vials. One trip blank was collected by pouring lab-grade deionized water directly from the deionized water container into the sample vial prior to commencing field activities. The trip blank was stored with collected samples throughout the sampling event. The duplicate samples were collected from well MW-15, using two PDB samplers, and well MW-9 (supplied with a K:120064\205\Second semiannual 3rd year1Feb05SomiannuaIRpt doc 3-3 RFW205-2A-AT JK I I I D D 0 This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in pa~. without the express written pennission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 3 Revision: O Date: May 2005 carbon filter unit). The lab-grade deionized water sample was collected by pouring lab-grade deionized water directly from the water container into the sample vial. All samples were analyzed for VOCs using EPA Method 8260. Analytical results for the QA/QC sa111ples arc su111111arized in Table 3-2. Chloroform was I detected in the rinse blank, trip blank, and laboratory-grade deionized water sa111plc at estimated concentrations below the reporting li111it. No other VOCs were reported in the QA/QC sa111ples. Chlorofor111 was detected in groundwater samples collected fro111 MW-7 and MW-17 at estimated values below the reporting limits. Chloroform was not cktected in groundwater samples collected from PDBs. I I I Duplicate results were comparable to previous sa111pling events ($25'fo relative percent difference) for all COCs identified at concentrations above the reporting limit. 3.2 GROUNDWATER ELEVATION WESTON collected water level measurements relcrenced to the top of the well casmg for I monitoring wells MW-I through MW-4, MW-12, MW-14, MW-15, MW-20 and MW-21 on I and 2 February 2005 (Table 3-3). Depth to water was measured using an electronic water level I meter. The water level probe and tape were deconta111inated prior to each 111easurement. Figure 3- 1 provides a potentiometric surface map of the bedrock aquifer. During the previous se111iannual I sampling event, data from monitoring well MW-21 was considered ano111alously high, and not included for development of the potentiometric surface map. During this sa111pling event, the I water level in this well was carefully evaluated and measured at various times during the event to confir111 findings and to evaluate for potential fluctuations. The water level remained I anomalously high relative to the other 111onitoring wells in the well network. It is likely the well I I K:\20064\205\Second semiannual 3rd year\Feb05Sem,annua1Rpl.doc RFW205·2A-AT JK I I I D 0 D I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. Table 3-2 February 2005 Semiannual LTRA QA/QC Laboratory Analytical Results Summary Davis Park Road TCE Site Sample Identification: DI Trip EB MW-15 Water Blank PDB Rinse Blank Date Sampled: 2/2/05 2/1/05 2/2/05 2/2/05 Volatile Organic Compounds (ug/1) duplicate Chloroform 0.17J 0.19 0.18J ND 0.25J cis 1,2-Dichloroethene ND ND ND 3.6 3.4 MTBE ND ND ND 0.09 ND Trich1oroethene ND ND ND 39 39 Tetrachloroethene ND ND ND 0.30J 0.37J Miscellaneous Compounds (ug/1) Ci] unknown(s) 2.0J 1.SJ 3.6J 4.3J Cyclotrisiloxane, Octamethyl ND ND ND ND Cyclotetrasiloxane, Octamethyl 5.1NJ D J 3.6NJ ND 18NJ Notes: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table ND= not detected in sample J = estimated value NJ = presumptive evidence analyte is present: analyte reported as estimate value Bolded values exceed EPA MC Ls PDB = Passive Diffusion Bag Samples were analyzed following CLP protocol. 3-5 K:\20064\205\Second Semiannual 3rd year\Feb0SSemiannualRpt-tbls.xls I MW-9 2/2/05 duplicate ND ND 0.93 1.2 0.15J 0.18J 9.4 12 0.34J 0.51 1.4J 0.51J ND 0.51NJ ND 1.9NJ I II!!! l!!!!!!!!!!!I l!!!!!I == lliiliil liiiiil liii1 iiiil iiiil liiii iiiil This document was prepared by Weston Solutions, Inc., expressly for EPA. It ~hall not be disclosed, in whole or in part, without the express written permission of EPA. Sample ID. Former ID: Street Location: Screened Interval: Total Depth (record): Date: Top of Casing Elevation (ft msl): Depth to Water (It bloc): Water Elevation (ft msl : Notes: ft msl = feet above mean sea level ft bloc = feet below top of casing ft= feet MW-1 MW-10 S of Cedar Oak 40-75 ft 75 2/1/05 687.50 3.87 683.63 Table 3-3 Semiannual L TRA Groundwater Elevation Data February 2005 Davis Park Road TCE Site MW-2 MW-3 MW-4 MW-2D MW-3D MW-4D MW-12 CW-5 2816 DPR N of 2400 Skyland 2415 Skyland Cedar Oak Subdivision 21-54 87-150 130-142 70-112 54 150 142 112 2/1/05 2/1/05 2/1/05 2/1 /05 684.6 746.29 740.0 707.21 3.60 23.58 33.30 14.07 681.00 722.71 706.67 693.14 K:\20064\205\Second Semiannual 3rd year\Feb0SSemiannualRpt-tbls.xls 3-6 MW-14 MW-15 MW-20 MW-21 CW-4 CW-7 CO-5 2403 DPR 2332 Tate Lendora N Lendora N Unknown Unknown 163-173 125-135 74 143.3 173 135 2/1/05 2/1 /05 2/1/05 2/1/05 768.75 720.99 743.72 750.85 46.11 4.76 24.94 0.2 722.64 716.23 718.78 750.65 iiiil ----l!!l!!!!!I .. ~ 0 0 D D D C':i I D PENNy C:J "'Q •➔ ·+ D Do 0 ◊ \J D D 0 D 0 CJ \0 CJ □®" iii ' ' ' \ • l L41');7 ()() - / '" 71 s D APRVD. DATE: REVISION --!!l!!!!I llllilll -11!!!1 ---.. ---"' ui~♦--z "' () C> CJ ◊ <:> 0 ◊ 0 '> \) <> \> \) <> <> 0 \) D \) D \) "' \) ® \ Cl G ~ ◊ ~ ,;o 0 \j 0 Cl , 0 \j 0 CJ IJ 0 \> G 1}® ~ 0 = D 0 \J m D ® ':\ \ □ ... ~\ 1\ 0 i® - 0 0 CEN Q 0 D .., 0 Q 0 ~ 0 0 0 \ 0 " Q ~ e'\ 0 D \) D I D 0 ~D \®□ n g 0 CJ '-r-() 0 !tg <? ~g ',®\~ O< em .......... ~ ...... ~i -.-·~'0. ----'+-~?o □ DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA □ POTENTIOMETRIC CONTOUR MAP BEDROCK AQUIFER FEBRUARY 2005 FIGURE 3-1 • ~ ~~ ~ i r,.."40 i Q ~~9 8 a "'"' c:JQ 0 0 I] D [] 1] • a D ~□ ~ □ C D z ~ □ lo D C 0 m i □ D CJ m D D □ □ D □ D 'iJ D D □ D --- __, __, u, 0 u, u, 8 "u, ~ 0~ --, --, '"0 c; zo "' =J z c; o_, r <: 0 '" "'c < ~:;o ,l> =! Oz 0 ~M z "'"' --,,< ~~ 3 c; "" DRAWN: DATE: K. SPIKES 05/27 /03 LAYOUT: CADD FILE Fi -3-1 FIGS.dwg D .,•· ~r \'i 0 0 'I 0 n " 3AIMO OMO:ilMVH - * r '" C) '" z " 0 c; r r r 0 0 ,. --, 0 z W.0. NO. 20064-138-100-0930 SHF.ET: OF I I I I This document was prepared by Weston Solutions. Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 3 Revision: O Date: May 2005 is screened in a low yield fracture that equilibrated over time to the current elevation. The I measurement was again not included for development of the potcntiometric surface map. I 3.3 GROUNDWATER ANALYTICAL RESULTS I 3.3.1 Groundwater Samples I I TCE and PCE were the only VOC constituents to exceed the ROD Performance Standards in groundwater samples collected during the February 2005 Semiannual LTRA sampling event. TCE and/or PCE were detected in groundwater sampled from 8 of the I 9 wells sampled. The Performance Standard of 2.8 µg/1 (TCE) and/or I µg/1 (PCE) was exceeded in 6 groundwater I samples. TCE exceeded the ROD Performance Standard in the following samples: MW-9 (9.4 µg/1), MW-15 (39 µg/1), and MW-17 (12 µg/1). PCE exceeded the ROD Performance Standard in I the following samples: MW-2 (2.0 µg/1), MW-12 (1.2 ftg/1), MW-17 (5.3 µg/1), and MW-18 (3.9 µg/1). Monitor well MW-6 which has historically exceeded the ROD Performance Standards for I TCE and PCE could not be accessed for sampling during this event. I Laboratory analytical results for first year through third year L TRA sampling events arc summarized in Table 3-4. The February 2005 analytical results arc summarized graphically in I I I I I I Figures 3-2 and 3-3 for TCE and PCE, respectively. Laboratory analytical reports are included in Appendix 8. The highest TCE concentration (39 µg/1) was detected in groundwater sampled from monitor well MW-I 5, located at the west central portion of the site. The second highest TCE concentration ( 12 µg/1) was detected in groundwater sampled from monitor well MW-I 7, located on the southern side of the site. The highest PCE concentration (5.3 µg/1) was also detected in groundwater sampled from MW-17. The second highest PCE concentration (3.9 µg/1) was K\20064\205\Second semiannual 3rd year\Feb05Semiannua1Rp1.doc 3-8 RFW205·2A-AT JK ------- - -- --- - --Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-1 S of Location: Cedar Oak Date Sampled: Apr-02 Scp-02 Dcc-02 i\lar-OJ Auµ:-OJ Feh-0.f Aug-04 Volatile Organic Compounds (ug/1) Chloromethane .. .. .. .. .. 0.28J .. 1, 1-0ichloroethene .. .. .. . . .. .. Acetone .. .. .. .. . . 11 12 Methylene Chloride .. .. .. .. .. .. .. Carbon Disulfide .. .. .. .. .. . . .. Methyl T-Butyl Ether .. .. .. . . .. .. . . i, 1-0ichloroethene .. .. .. .. ·• .. .. 1, 1-Dichloroethane .. .. .. .. .. .. .. trans 1,2-Dichloroethene .. .. .. .. . . .. .. cis 1,2-Dichloroethene .. .. .. .. .. . . .. Methyl Ethyl Ketone .. .. .. .. .. 7.6 .. Chloroform .. .. .. .. . . . . .. Benzene .. .. .. . . .. . . .. 1, 1, 1-Trichloroethane .. .. .. .. .. .. . . Cyclohexane .. .. .. .. .. .. .. 1,2-Dichloroethane .. .. .. .. . . . . .. f'Trichloroethene .. .. .. .. .. . . .. Methyfcycfohexane .. .. .. . . .. . . .. Methyl tsobutyl Ketone .. .. .. . . .. . . .. cis-1,3-Dichloropropene .. .. .. .. .. . . .. tfoluene .. .. .. .. .. .. . . tr etrachloroethene .. .. .. .. .. .. . . Ethylbenzene .. .. .. .. .. .. .. !Total Xylenes .. .. .. . . .. . . .. Bromoform .. .. .. . . .. . . .. 1,3-0ichlorobenzene .. .. .. .. . . .. .. 1,4-Dichlorobenzene .. .. .. . . .. . . .. ,.,1sce11aneous l,Ompounas I I I I I I I Unknown(s) .. .. .. . . .. . . .. Benzene, 1,3,5-Trimethyl .. .. .. . . .. . . .. Cyclotrisiloxane, Octamethyl .. .. .. . . .. . . .. Cyclotetrastloxane, Octamethyl .. .. .. .. .. .. .. Note: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table. J = estimated value; N = presumptive evidence of material; U = not detected at or above the reporting limit A= Analyte analyzed in replicate. Reported value is "average• of replicates. Bolded values exceed ROD Pertormance Standards Samples were analyzed followi'"!g CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-9 Fcb-0.:i . . .. . . . . .. . . . . . . . . . . . . . . .. . . . . . . .. .. .. . . . . . . . . .. .. . . .. I I 2.6J . . . . . . -- - -- - - -- -- ---- --- -Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-2 2816 Location: DPR Date Sampled: Apr-02 Scp-02 Bcc-02 ~lar-0.' Aug-OJ Feh-0..J Aug-04 Volatile Organic Compounds (ug/1) Chloromethane .. .. 0.2BJB .. .. .. .. 1, 1-Dichloroethene .. 0.51 --.. 0.31J .. .. Acetone ------.. .. 10J 28A Methylene Chloride --.. --.. .. --.. Carbon Disulfide ----------.. .. Methyl T-Butyl Ether .. .. .. . . .. .. -- 1, 1-Dichloroethene --.. ---------- 1, 1-Dichloroethane .. .. .. .. .. .. -- !trans 1 ,2-Dichloroethene .. .. .. . . --.. -- cis 1,2-Dich1oroethene .. .. --.. .. .. .. Methyl Ethyl Ketone --.. .. --.. 6.9 .. Chloroform 0.44J 0.528 0.37J 0.50 0.32J 0.40J .. Benzene .. .. .. . . .. .. .. 1, 1, 1-T richloroethane 0.48J 0.58 0.43J 0.45J 0.31J 0.35J .. Cyclohexane .. .. .. .. .. .. .. 1 ,2-0ichloroethane .. --.. . . --.. .. trrichloroethene 3.0 6.1 4.3 4.1 2.9 4.0 2.7A Methylcyclohexane .. ----.. --.. .. Methyl lsobutyl Ketone .. .. .. --.. --.. cis-1,3-Dichloropropene .. .. --.. . . .. .. troluene .. .. .. .. .. . . .. 1Tetrach1oroethene 2.5 3.7 2.7 3.0 2.0 1.3 1.9A Ethyl benzene .. .. --.. --0.23J 0.52AJ JTotal Xylenes ----.. .. . . 0.19J .. Bromoform .. .. .. --.. --.. 1,3-Dichlorobenzene .. .. .. .. --.. .. 1,4-Dichlorobenzene .. .. .. .. . . --.. ,.,,sce11aneous 1..,ompounas I I I I I I I Unknown(s) .. --.. . . --.. . . Benzene, 1,3,5-Trimethyl --.. .. .. .. .. .. Cyclotrisiloxane, Octamethyl .. --.. .. --.. .. Cyclotetrasiloxane, Octamethyl ----.. .. .. .. . . Note: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table. J = estimated value; N = presumptive evidence of material; U = not detected at or above the reporting limit A = Analyte analyzed in replicate. Reported value is "average" of replicates. Balded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. •-indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemiannualRpt-tbls.xls 3-10 Fch-05 . . -- .. --.. -- .. -- .. --.. .. . . 0.24J . . . . 2.7 --.. -- . . 2.0 0.40J 0.35J . . . . . . I I 4.0J -- . . 7.5NJ -- - -- - - -- - - --------Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-3 N of 2400 Location: Skyland Date SamJJ)ed: Apr-02 Scp-02 Dcc-02 :\tar-OJ Fch-04 :\ug-04 Feh-05 Volatile Organic Compounds (ugll) Chloromethane -------------- 1, 1-Dichloroethene -------------- Acetone --------8.9J 16 -- Methylene Chloride -------------- Carbon Disulfide -------------- Methyl T-Butyl Ether 12 14 10 15 3.0 13 11 1, 1-Dichloroethene -------------- 1, 1-0ichloroethane -------------- trans 1,2-Dichloroethene -------------- leis 1,2-Dichloroethene -------------- Methyl Ethyl Ketone --------6.6 ---- Chloroform -------------- Benzene --------0.49J ---- 1 , 1, 1 ·Trichloroethane -------------- Cyclohexane -------------- 1,2-Dichloroethane -------------- tTrichloroethene -------------- Methylcyclohexane -------------- Methyl lsobutyl Ketone -------------- ICis-1,3-Dichloropropene -------------- tToluene -------------- tT etrachloroethene --0.22J 0.18J 0.23J 0.18J --0.20J Ethylbenzene -------------- tTotal Xylenes ----0.24J 0.11J 1.5 ---- Bromoform -------------- 1,3-Dichlorobenzene -------------- 1,4-0ichtorobenzene ----0.15J -------- m1sce11aneous c.;ompounas I I I I I I Unknown(s) ------------3 7J Benzene, 1,3.5-Trimethyl -------------- Cyclotrisiloxane, Octamethyl -------------- Cyclotetrasitoxane, Octamethyl ------------4 3NJ Note: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table. J = estimated value; N = presumptive evidence of material; U = not detected at or above the reporting limit A= Analyte analyzed in replicate. Reported value is "average· of replicates. Balded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. •· indicates not detected above the reporting limit I K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-11 - -- ------ - - -- - - -- --Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-4 2415 Location: Skyland Bate Sampled: Apr-02 Scp-02 Dcc-02 ,\lar-flJ Aug-OJ Volatile Organic Compounds (ug/1) Chloromethane ------ 1, 1-0ichloroethene ------ Acetone ------ Methylene Chloride ------ Carbon Disulfide ------ Methyl T-Butyl Ether ------ 1, 1-Dichloroethene ------ 1, 1-Dichloroethane ------ trans 1,2-Dichloroethene ------ cis 1,2-Dichloroethene ------ Methyl Ethyl Ketone ------ Chloroform ------ Benzene ------ 1, 1, 1-Trichloroethane ------ Cyclohexane ------ 1.2-Dichloroethane ------ tr richloroethene ------ Methylcyclohexane 0.48J ---- Methyl lsobutyl Ketone ------ le is-1,3-Dichtoropropene ------ !Toluene 0.18J ---- tT etrachloroethene ------ Ethylbenzene ------ tTotal Xylenes ----0.17J Bromoform ------ 1 ,3-Dichlorobenzene ------ 1 ,4-Dichlorobenzene ------ ,v,,sceuaneous compounds Unknown(s) ------ Benzene, 1,3,5-Trimethyl ------ Cyclotrisiloxane, Octamethyl ------ Cyclotetrasiloxane, Octamethyl ------ Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates-presumptive evidence of A = Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-12 --0.18J ---- ---- ---- --0.56 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- -------- Fch-0-t Aug-04 Fch-05 0.33J ---- ------ 11 10J -- ------ ------ ------ ------ ------ ------ ------ 8.6 ---- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ 0.14J 0.56J 0.33J ----0.45J ------ ------ ------ ----1.SJ ------ ------ ------ -- - ----- - -- - -- -- - - -Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Apr-02 Sco-02 Dcc-02 Volatile Organic Compounds (ug/1) Chloromethane ------ 1, 1-Dichloroethene ------ Acetone ------ Methylene Chloride ------ Carbon Disulfide ------ Methyl T-Butyl Ether ------ 1, 1-Dichloroethene ------ 1, 1-Dichloroethane ------ ttrans 1.2-0ichloroethene ------ cis 1,2-0lchloroethene ------ Methyl Ethyl Ketone ------ Chloroform ------ Benzene ------ 1 , 1 . 1-T richloroethane ------ Cyclohexane ------ 1.2-0ichloroethane ------ tTrichloroethene 1.4 1.9 1.SJ Methylcyclohexane ------ Methyl lsobutyl Ketone ------ cis-1 ,3-0ichloropropene ------ froluene ------ IT etrachloroethene ------ Ethylbenzene ------ tTotal Xylenes ------ Bromoform ------ 1,3-0ichlorobenzene ------ 1,4-0ichlorobenzene ------ ,.,1sce11aneous compounds I I I Unknown(s) ------ Benzene, 1,3,5-Trimethyl ------ Cyclotrisiloxane, Octamethyl ------ Cyclotetrasiloxane, Octamethyl ------ Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of I A = Analyte analyzed in replicate. Reported value is "average· of replicates. Bolded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05Semiannua1Rpt-tbls.xls 3-13 MW-5 2419 DPR i\lar-0.\ Aug:-0] Fch-0-1 Aug-04 Fch-05 ----0.32J ---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- 0.15J -------- ---------- 0.15J --0.11J ---- -------- ---------- ---------- ---------- 1.7 1.6 1 .4 0.96J 0.67 -------------------- ----0.13J ---- ---------- ---------- ---------- ---------- ---------- ---------- ---------- I I I I --------11 J ---------- -------------------- --- I -- - ---- -- - -- ---Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Apr-02 Scp-02 Dec-02 Volatile Organic Compounds (ugll) Chloromethane .. .. . . 1, 1-0ichloroethene .. .. .. Acetone 12 .. .. Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether .. .. . . 1. 1-Dichloroethene .. .. .. 1, 1-Dichloroethane .. .. 0.59J trans 1,2-0ichloroethene .. .. .. cis 1,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. .. Benzene .. .. .. 1. 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. 0.16 .. Trichloroethene 1.6 .. 3.9J Methy!cyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. cis-1,3-Dichloropropene .. .. .. Toluene 0.18J .. .. Tetrachloroethene 1.5 1.2 2.7J Ethylbenzene .. .. .. Total Xylenes .. .. .. Bromoform .. .. .. 1 .3-0ichlorobenzene .. .. .. 1 .4-Dichlorobenzene .. .. .. ,.,1sce11an.eous L,Ompounas I I I Unknown(s) .. .. .. Benzene, 1,3,5-Trimethyl .. .. .. Cyclotrisiloxane, Octamethyf .. .. .. Cyclotetrasiloxane, Octamethyl .. .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value!; N indicates presumptive evidence of MW-6 2717 DPR ~lar-0.~ .. .. <7.3 . . .. .. .. 0.33J .. .. .. . . .. .. .. .. 3.4 .. .. .. . . 3.0 .. .. . . .. 0.11J I .. . . .. .. A= Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemiannualRpt-tbls.xls MW-7 2837 DPR Au~-03 Feh-04 Sl·p-02 Dec-02 ;'\lar-03 Au~-03 Fch-04 0.34J 0.30J .. .. .. .. .. .. . . .. . . .. . . .. .. . . .. . . <7.5 .. .. .. . . .. . . .. . . .. .. . . .. . . .. .. . . .. . . 0.17J 0.19J 0.12J .. 0.23J .. . . .. . . .. .. .. 0.20J 0.31J .. . . .. .. . . . . .. .. . . .. . . .. .. . . .. . . .. .. .. .. .. .. . . .. .. . . .. . . .. . . 0.10J .. 0.24J .. . . .. . . .. .. .. .. . . .. . . .. . . .. . . .. .. .. . . .. .. .. .. .. .. .. . . .. 1.9 3.0 .. .. .. .. . . . . .. .. . . .. .. . . .. . . .. . . .. . . .. .. .. .. . . .. .. .. .. .. .. . . .. .. .. 1.8 2.8 .. .. .. .. . . .. . . .. . . .. . . .. .. . . .. .. . . .. .. .. . . .. . . .. .. .. .. 0.11J .. .. . . .. .. .. 0.11J .. . . .. . . .. I I I I I I I .. .. .. .. . . .. .. .. .. .. .. . . .. .. .. .. .. . . .. . . .. . . .. .. . . .. .. .. 3-14 --- Aui,.:-04 Feb-OS . . .. .. .. .. . . .. .. .. . . . . 0.23J . . . . .. .. .. .. . . .. . . .. .. 0.30J . . .. . . .. . . .. . . .. . . .. .. .. . . .. .. . . . . .. . . .. .. . . . . .. . . .. . . .. . . .. I I I . . 2 OJ . . .. . . .. . . 10NJ - - ----- - -- - -- -- -Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-8 2400 Location: Skyland Date Sampled: Scp-02 Dcc-02 l\lur-0., Aui,.:-0.' Fch-0-t Aug-04 Fch-05 Volatile Organic Compounds (ug/1) Chloromethane .. 0.32JB .. 0.40J .. .. . . 1, 1-Dichloroethene .. .. .. .. .. .. . . Acetone .. .. <12 .. .. .. . . Methylene Chloride .. .. . . .. . . .. .. Carbon Disulfide .. .. .. .. .. .. . . Methyl T-Butyl Ether 1.8 1.2J 1.7 1.1 1.2 .. 0.42J 1, 1-Dichloroethene .. .. .. .. .. .. . . 1, 1-Dichloroethane .. .. . . .. . . .. .. rans 1,2-Dichloroethene .. .. . . .. . . .. .. is 1 ,2-Dichloroethene .. .. . . .. .. .. . . Methyl Ethyl Ketone .. 6.BJ .. .. .. .. . . Chloroform .. .. . . .. .. .. .. Benzene .. .. . . .. . . .. .. 1, 1, 1-Trichloroethane .. .. . . .. .. .. . . Cyclohexane .. .. . . .. . . .. .. 1,2-Dichloroethane .. .. .. . . .. .. . . Trichloroethane .. .. .. .. . . .. . . Methylcyclohexane .. .. . . .. . . .. . . Methyl !sobutyl Ketone .. .. .. . . .. .. . . cis-1,3-Dichloropropene .. .. . . .. . . .. . . Toluene .. 2.0J .. .. .. .. . . IT etrachloroethene .. 0.12J 0.16J .. 0.16J .. .. Ethylbenzene .. .. . . .. .. .. . . !Total Xylenes .. .. . . .. .. .. . . Bromoform .. .. .. .. . . .. . . 1,3-Dichlorobenzene .. .. . . .. . . .. .. 1,4-Dichlorobenzene .. .. . . .. . . .. . . m1sce11aneous c.;ompounas I I I i I I I Unknown(s) .. .. .. .. .. .. 3.4J Benzene, 1,3,5-Trimethyl .. .. . . .. .. .. . . Cyclotrisiloxane, Octamethyl .. .. . . .. . . .. . . Cyclotetrasiloxane, Octamethyl .. .. .. .. . . .. 13NJ Note: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table. J = estimated value; N = presumptive evidence of material; U = not detected at or above the reporting limit A= Analyte analyzed in replicate. Reported value is "average" of replicates. Balded values exceed ROD Performance Standards Samples were analyzed foTiowing CLP protocol. --indicates not detected above the reporting limit I K:\20064\205\Second Semiannual 3rd year\Feb05Semiannua1Rpt-tbls.x!s 3-15 - -- -- - - - -- - - -- - ----Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-9 2639 Location: Springbrook Date Sampled: Apr-02 Sep-02 Dcc-02 i\lar-0.' All!,!:•OJ Fdi-0-1 Au~-0-1 Volatile Organic Compounds (ug/1) Chloromethane ----------0.30J -- 1, 1-0ichloroethene -------------- Acetone ------<9.4 ------ Methylene Chloride -------------- Carbon Disulfide -------------- Methyl T-Butyl Ether --0.16J 0.12J 0.14J --0.16J -- 1, 1-Dichloroethene -------------- 1, 1-Dichloroethane ----0.12J 0.18J ------ trans 1,2-Dichloroethene -------------- cis 1,2-Dichloroethene 1.1 0.67 1.0J 1.6 0.26J 0.88 0.77J Methyl Ethyl Ketone ----8.SJ -------- Chloroform ----0.14J 0.15J --0.14J -- Benzene -------------- 1, 1, 1-Trichloroethane -------------- Cyclohexane -------------- 1 ,2-Dichloroethane --0.44J --0.48J 0.42J 0.52 -- ITrichloroethene 14 8.6 12J 16 --7.8 7.3 Methylcyclohexane -------------- Methyl lsobutyl Ketone -------------- cis-1 ,3-Dichloropropene -------------- rroluene ----2.3J -------- Tetrachloroethene --0.36J 0.36J 0.44J --0.39J · -- Ethylbenzene -------------- tTotal Xylenes -------------- Bromoform -------------- 1,3-Dichlorobenzene -------------- 1 ,4-Dichlorobenzene -------------- 1v,1sce11aneous c;ompounas I I I I I I I I Unknown(s) -------------- Benzene, 1,3,5-Trimethyl -------------- Cyclotrisiloxane, Octamethyl -------------- Cyclotetrasiloxane, Octamethyl -------------- Note: Only constituents that were detected in at least one sample during the baseline sampling event are included in this table. J = estimated value; N = presumptive evidence of material; U = not detected at or above the reporting limit A= Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Performance Standard~ Sample$ were analyzed following CLP protocol. •· indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-16 Feh-05 -- -- -- -- -- 0.15J -- -- -- 0.93 -- -- -- -- -- -- 9.4 -- -- -- -- 0.34J -- -- -- -- -- I 1 4J ------ -- - ---- - -- - - -- -----Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-10 2634 Location: Skyland Date Sampled: Apr-02 Scp-02 r>ec-02 i\lar-OJ Au~-OJ Volatile Organic Compounds (ug/1) Chloromethane .. .. 0.45JB 1, 1-Dichloroethene .. .. .. !Acetone .. .. -· Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether .. ·-.. 1, 1-0ichloroethene .. .. .. 1, 1-0ichloroethane .. .. .. 1trans 1,2-Dichloroethene .. .. .. cis 1 ,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. .. Benzene .. .. .. 1 , 1 , 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. t'frichloroethene .. 0.16J 0.15J Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. lcis-1,3-0ichloropropene .. .. .. t'foruene .. .. 1.1 IT etrachloroethene .. 0.18J 0.20J Ethylbenzene .. .. .. (Total Xylenes .. .. .. Bromoform .. .. .. 1,3-Dichlorobenzene .. .. .. 1,4-0ichlorobenzene .. .. .. m1sce11aneous compounds I I I Unknown(s) .. .. .. Benzene, 1,3,S·Trimethyl .. .. .. Cyclotrisiloxane, Octamethyl .. .. .. Cyclotetrasiloxane, Octamethyl .. .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of .. .. .. .. .. 0. t 1J . . .. .. . . .. .. .. . . .. .. 0.16J .. .. . . . . 0.24J .. .. .. .. .. I .. .. .. .. A= Analyte analyzed in replicate. Reported value is "average" of replicates. Balded values exceed ROD Performance Standards SamPles were analyzed following CLP protocol. •· indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemlannualRpt-tbls.xls 3-17 .. . . .. .. .. .. .. .. .. .. .. . . .. .. . . .. .. . . .. .. .. .. .. .. .. . . .. I . . .. . . .. Fch-0-1 AuJ!-04 Fch-05 .. .. . . .. .. . . . . .. .. .. . . . . .. .. . . .. .. . . .. .. . . . . .. . . . . .. . . . . .. . . .. .. . . .. .. . . .. . . . . .. .. . . .. .. .. .. .. . . . . .. .. .. .. . . . . .. . . .. .. . . .. .. . . 0.24J .. . . .. .. . . .. .. . . .. .. . . . . .. . . .. .. . . ' I I I I . . .. 8 OJ . . .. . . . . .. .. . . .. 27NJ --- --- - -- - - - ---- - - -Table 3-4 LTRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Apr-02 Scp-02 Dcc-02 Volatile Organic Compounds (ug/1) Chloromethane ----0.52JB 1, 1-Dichloroethene ------ Acetone 11 ---- Methylene Chloride ------ Carbon Disulfide ------ Methyl T-Butyl Ether --0.47J 0.62J 1, 1-Dichloroethene ------ 1, 1-0ichloroethane ------ rans 1,2-Dichloroethene ------ cis 1,2-Dichloroethene ------ Methyl Ethyl Ketone ------ Chloroform ------ Benzene ------ 1, 1, 1 -Trichloroethane ------ Cyclohexane ------ 1,2-Dichloroethane ------ ITrichloroethene ------ Methylcyclohexane ------ Methyl lsobutyl Ketone ------ cis-1,3-Dichloropropene ------ !Toluene ------ If etrachloroethene ----0.11J Ethylbenzene ------ !Total Xylenes ------ Bromoform ------ 1,3-0ichlorobenzene ------ 1,4-Dichlorobenzene ------ ,.,,,scenaneous compounas I I I Unknown(s) ------ Benzene, 1,3,5-Trimethyl ------ Cyclotrisiloxane. Octamethyl ------ Cyclotetrasiloxane, Octamethy1 ------ Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of MW-11 2506 Briar Oak i\lar-0J Aug-OJ ---- ---- ---- ---- ---- 0.36J 0.29J ---- ---- ---- --·- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 0.11J -- ---- ---- ---- ---- ---- I I ---- ---- ---- ---- A= Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. •-indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemiannualRpt-tbls.xls 3-18 Fch-04 Aug-04 Fch-05 ------------ ------ ------ ------ ----0.16J ------ ------ ------------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ 0.17J ---- ------ ------ ------ ------ ------ I I I I ----10J ------ ----1 7NJ ----39NJ -- - - - - - - -- --- - - - - --Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Apr-02 Scp-02 Volatile Organic Compounds (ug/1) Chloromethane ---- 1, 1-Dichloroethene ---- Acetone ---- Methylene Chloride ---- Carbon Disulfide ---- Methyl T-Butyl Ether ---- 1, 1-Dichloroethene .. -- 1, 1-0ichloroethane ---- trans 1 ,2-Dichloroethene ---- cis 1 ,2-Dichloroethene ---- Methyl Ethyl Ketone ---- Chloroform ---- Benzene ---- 1, 1, 1-Trichloroethane 0.38J -- Cyclohexane ---- 1,2-0ichloroethane ---- tTrichloroethene 3.0 2.3 Methylcyclohexane ---- Methyl tsobutyl Ketone ---- ICis-1,3-Dichloropropene ---- tToluene ---- ~etrachloroethene 1.6 1.1 Ethylbenzene ---- lfotal Xylenes ---- Bromoform ---- 1,3-Dichlorobenzene ---- 1 .4-Dichlorobenzene ---- ,v,1sce11aneous c;ompounas I I I Unknown(s) ---- Benzene, 1,3,S·Trimethyl ---- Cyclotrisiloxane, Octamethyl ---- Cyclotetrasiloxane, Octamethyl ---- Note: Only constituents that were detected in at least one sample during J indicates estimated value: N indicates presumptive evidence of Dcc-02 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2.1 -- -- -- -- 0.45J -- 0.14J -- -- 0.12J ---- ---- A = Analyte analyzed in replicate. Reported value is "average" of replicates. Balded values exceed ROD Performance-Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-19 MW-12 2719 DPR i',lar-OJ Aug-OJ Fch-0-l AuJ!-0-l Fch-05 ---------- .. -------- ----15J ---- .. --.. ---- --.. ------ ----.. ---- ----.. ---- --.. ---- .. -------- .. ------ ----7.2 ---- ---------- .. --.. ---- ---------- -------- .. --.. ---- 2.4 1.5 3.5 2.0 2.2 ---------- .. --.. ---- ---------- ----.. ---- 0.79 0.88 1.4 1 .1 1.2 ----.. ---- ---------- .. -------- ----.. ---- .. -------- I I I I I .. ------2 OJ .. --------.. -------- --------7 ?NJ --- I - - - - - --- - ---- - - -Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-13 2241 Location: Cedar Oak Date Sampled: Apr-02 Scp-02 Dcc-02 Volatile Organ;c Compounds (ugll) Chloromethane .. .. .. 1, 1-0ichloroethene .. 0.15J .. Acetone .. .. .. Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether .. .. .. 1, 1-Dichloroethene .. .. .. 1, 1-Dichloroethane .. .. .. trans 1,2-Dichloroethene .. .. .. cis 1 ,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. .. Benzene .. .. .. 1, 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. Trichloroethene .. .. .. Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. 0.16J cis-1,3-Dichloropropene .. .. .. !Toluene 0.17J 0.19J 0.59 IT etrachloroethene .. .. .. Ethyl benzene .. -· .. Total Xylenes .. ·-0.29J Bromoform .. .. 0.20JB 1,3-Dichlorobenzene -· .. .. 1,4-Dichlorobenzene .. .. 0.12J m1sceuaneous <,;ompounas I I I Unknown(s) .. .. .. Benzene. 1,3,5-Trimethyl .. .. .. Cyclotrisiloxane, Octamethyl .. .. .. Cyclotetrasiloxane. Octamethyl .. .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of Scp-02 ·- .. .. ·- ·- .. .. .. .. .. .. .. .. .. .. .. 0.49J .. .. .. .. -· .. .. .. .. .. II .. .. .. .. A = Analyte analyzed in replicate. Reported value is "average" of replicates: Balded values exceed-ROD Performance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05Semiannua1Rpt-tbls.xls 3-20 MW-14 2403 DPR Dcc-02 ~lar-OJ Aul,!-OJ Fch-04 Au!,!-0.i .. -· .. ·--· .. -· .. .. .. .. .. .. 14J 30 .. .. .. .. .. .. . . .. .. .. .. . . .. .. .. .. .. .. .. .. .. .. . . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6.9 .. .. .. .. .. .. .. .. .. .. . . .. .. . . .. .. . . .. .. .. .. .. .. .. .. .. 0.28J 0.27J 0.25J 0.22J .. .. . . .. .. .. .. ·-.. .. .. .. .. .. .. . . .. .. .. . . .. .. .. .. .. .. .. .. . . .. .. .. .. .. -· .. 0.20JB .. .. . . .. .. .. .. .. .. .. .. .. .. .. I I I I I I .. .. .. .. . . .. .. .. .. .. .. .. .. . . . . .. .. .. ·-.. --- Fcb-05 .. . . . . . . .. . . . . .. . . . . . . . . . . .. . . . . .. . . .. . . .. . . .. .. ·- .. . . I 1 3J . . 0 97NJ 23NJ - -- - - --- --- - - ---Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Scp-02 Occ-02 ~far-OJ Volatile Organic Compounds (ug/I) Chloromethane --0.1 lJB -- 1, 1-Dichloroethene .. .. .. l,Acetone .. .. .. Methylene Chloride .. .. 2.0J Carbon Disulfide .. .. . . Methyl T-Butyl Ether 0.25J 0.16J .. 1, 1-Dichloroethene .. .. . . 1, 1-Dichloroethane 0.20J 0.17J .. rans 1,2-Dichloroethene .. 0.25J .. cis 1,2-Dichloroethene 3.6 2.6 3.6 Methyl Ethyl Ketone .. .. .. Chloroform .. 0.22J .. Benzene .. .. .. 1, 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. 2.0J 1,2-Dichloroethane .. .. .. ITrichloroethene 50 36 40 Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. . . cis-1,3-Dichloropropene .. .. .. tToluene .. .. .. i1" etrachloroethene 0.31J 0.21J .. Ethylbenzene .. O.lOJ .. !fatal Xylenes .. 0.22J .. Bromoform .. .. .. 1,3-0ichlorobenzene .. .. .. 1,4-Dichlorobenzene .. 0.23J .. m1sceuaneous <.:ompounas I I I Unknown(s) .. .. .. Benzene, 1,3,5-Trimethyl .. .. .. Cyclotrisiloxane, Octamethyl .. .. .. Cyclotetrasiloxane, Octamethyl .. .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value: N indicates presumptive evidence of I A= Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Periormance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb05SemiannuaIRpt-tbls.xls 3-21 MW-15 2232 Tate Aug-0."\ Feh-0-1 Au~-0-t Feb-OS .. ----.. . . . . .. .. . . 15 .. . . .. . . .. .. .. . . .. .. .. . . .. 0.09J .. . . .. .. .. 0.27J .. 0.22J .. .. .. . . 2.8 4.9 3.3 3.6 . . 9.3 .. . . .. . . .. . . .. . . .. .. .. . . .. . . .. . . .. .. . . .. .. . . 38 50 46 39 .. . . .. . . .. .. . . .. . . .. .. . . .. . . .. . . 0.21J 0.22J .. 0.30J .. . . .. . . .. . . .. .. .. .. .. . . .. . . .. .. . . .. .. . . I I I I .. . . .. 3.6J .. . . .. .. . . .. . . .. . . .. . . - - - ------ - - - - - -----Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Sampled: Scp-02 Dcc-02 ;\for.OJ Volatile Organic Compounds (ug/1) Chloromethane --.. .. 1, 1-Dichloroethene .. .. .. Acetone .. .. .. Methylene Chloride .. .. .. Carbon Disulfide 0.29J 0.30J .. Methyl T-Butyl Ether .. .. .. 1, 1-Dichloroethene .. .. .. 1, 1 ~Dichloroethane .. .. .. trans 1,2-Dichloroethene .. .. .. cis 1,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. .. Benzene .. .. .. 1, 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. ITrichloroethene .. .. . . Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. cis-1,3-Dichloropropene .. .. .. fToluene .. .. .. IT etrach!oroethene .. .. .. Ethyl benzene .. .. . . !Total Xylenes .. .. .. Bromoform .. .. .. 1,3-Dichlorobenzene .. .. .. 1,4-0ichlorobenzene 0.33J 0.20J 0.30J ... 1sce11aneous l,Ompounas I I I Unknown(s) .. .. -· Benzene, 1,3,5-Trimethyl .. .. .. Cyclotrisiloxane, Octamethyl .. .. .. Cyclotetrasiloxane, Octamethyt .. .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of i A= Analyte analyzed in replicate. Reported value is "average· of replicates. Balded values exceed ROD Periormance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb0SSemiannualApt-tbls.xls :i-22 MW-16 2725 Puritan ,\ui:-OJ Fch-0-1 Aug-0-1 Feh-05 0.24J .. .. .. .. . . .. . . 2.2J .. .. . . .. .. .. . . 0.28J .. .. . . .. . . .. . . . . . . .. .. . . .. .. . . .. .. .. . . .. . . .. . . .. . . .. . . .. .. ·-. . .. . . .. . . . . . . .. .. .. .. .. . . .. . . .. . . .. . . .. .. .. . . .. . . .. . . .. .. . . .. .. . . . . .. .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . . . 0.35J .. . . .. 0.34J .. .. I I I I .. . . .. 3 2J .. . . .. . . .. . . .. . . .. . . .. 9 3NJ - - - - - - - -- - - 1]111111 --- - ---Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: Location: Date Samolcd: Apr-02 Sep-02 Dec-02 Volatile Organic Compounds (ugh) Chloromethane .. .. 0.40JB 1, 1-Dichloroethene .. .. .. Acetone .. .. .. Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether .. 0.47J .. 1, 1-0ichloroethene .. .. .. 1, 1-Dichloroethane .. .. .. I,rans 1,2-Dichloroethene .. .. .. cis 1,2-Dichloroethene .. .. 0.26J Methyl Ethyl Ketone .. .. .. Chloroform 0.31J 0.25JB 0.27J Benzene .. .. .. 1 , 1 , 1-T richloroethane 0.65 0.47J 0.45J Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. tTrichloroethene 12 13 12J Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. cls-1,3-Dichloropropene .. .. .. IToluene .. .. .. tr etrachloroethene 5,7 5.7 4.8J Ethylbenzene .. .. .. !Total Xylenes .. .. .. Bromoform .. .. .. 1,3-Dichlorobenzene .. .. .. 1,4-Dichlorobenzene .. .. .. ,v,1sce11aneous compounds I I I I Unknown(s) .. .. Benzene, 1,3,S•Trimethyl .. .. Cyclotrisiloxane, Octamethyl .. .. Cyclotetrasiloxane, Octamethyl .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of MW-17 2816 DPR i\lar-OJ Aug-0.~ .. 0.35J 1.6 0.60 .. . . .. . . .. .. .. . . .. . . .. .. .. . . 0.26J 0.78 . . .. 0.26J .. .. .. 0.70 0.36J .. .. .. .. 14 8.8 .. .. . . .. .. .. .. . . 6.2 4.2 .. .. .. . . .. .. .. .. .. .. I .. . . .. . . .. . . .. .. A= Analyte analyzed in replicate. Reported value is "average" of replicates. Balded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. •-indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemiannualRpt·tbls.xls 3-23 Fcb-04 AU!!;-04 Fch-05 0.35J .. .. 0.98 .. . . .. .. . . .. .. . . . . .. . . .. .. . . 0.98 0.61J 0.88 . . .. . . .. .. . . .. .. .. .. .. . . .. .. 0.22J . . .. . . 0.57 .. 0.50 . . .. . . . . .. . . 17 12 12 . . .. . . . . .. . . .. .. . . .. .. . . 9.0 6.5 5.3 . . .. . . .. .. . . . . .. . . .. .. . . . . .. . . I I I I .. .. .. .. .. . . .. .. . . . . .. . . --- ---- -- - - - ---- --Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample 10: MW-18 2800 Location: DPR l>ntc Sampled: Apr-02 Sep-02 Uec-02 ;\lar-0., Aug-OJ Volatile Organic Compounds (ug/1} Chloromethane .. .. .. 1, 1-Dichloroethene .. .. .. Acetone .. .. .. Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether .. .. .. 1, 1-0ichloroethene .. .. .. 1, 1-Dichloroethane .. .. 0.11J trans 1 ,2-Dichloroethene .. .. .. cis 1,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. .. Benzene .. .. .. 1, 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. tTrichloroethene 4.3 6.1 4.0J Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. cis-1,3-0ichloropropene .. .. .. !Toluene .. .. .. ~etrachloroethene 8.6 10 6.9J Ethyl benzene .. .. .. !Total Xylenes .. .. .. Bromoform .. .. .. 1 ,3-Dichlorobenzene .. .. .. 1 .4-Dichlorobenzene .. .. .. ,,.,,,sceuaneous c,;ompounas I I I Unknown(s) 5 4J .. .. Benzene, 1,3,5-Trimethyl .. .. .. Cyclotrisiloxane, Octamethyl .. .. .. Cyclotetrasiloxane, Octamethyl 11NJ .. .. Note: Only constituents that were detected in at least one sample during· J indicates estimated value: N indicates presumptive evidence of . . .. . . . . .. .. .. .. . . 0.21J .. .. . . .. .. .. 4.4 .. .. . . . . 9.1 .. . . . . .. .. I .. .. . . .. A= Analyte analyzed in replicate. Reported value is "average" of replicates. Bolded values exceed ROD Periormance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\FebOSSemiannualRpt-tbls.xls .. .. .. .. .. .. .. .. .. .. .. .. .. . . .. .. 4.4 .. .. .. .. 10 .. .. .. .. .. I . . .. .. .. 3-24 MW-19 2833 Penny Park Feh-04 Aug-04 Feh-05 ;\lar-OJ Aug-OJ Fch-04 . . .. . . .. 0.44J .. .. .. . . .. .. .. .. .. .. .. .. . . .. .. . . .. . . .. .. .. . . .. .. .. . . .. .. . . .. .. .. .. .. .. . . .. .. .. . . .. .. .. .. .. . . .. .. . . 0.14J .. . . .. . . .. . . .. . . .. .. . . .. .. --.. .. . . . . .. . . .. .. .. .. . . .. .. .. .. .. . . .. .. .. . . 0.15J . . .. .. .. .. 4.2 2.5 1.8 0.44J 0.24J 0.43J .. .. . . .. .. .. . . .. .. .. .. .. .. .. . . .. .. .. . . .. . . .. .. . . 9.9 6.0 3.9 0.36J 0.26J 0.39J . . .. . . .. . . .. . . .. .. .. . . .. .. .. . . .. .. .. .. . . .. .. .. .. .. .. . . .. .. . . I I I II I I I .. .. .. .. .. .. .. .. .. .. . . .. . . 1 4J .. .. .. .. . . 0 72NJ .. .. .. --- Aug-04 Fch-05 . . .. . . .. .. . . .. . . . . . . . . .. . . . . .. . . .. . . .. . . .. . . .. . . . . .. .. . . .. . . .. . . .. 0.25J . . . . .. . . .. . . .. . . .. 0.25J .. . . .. . . .. . . .. . . .. . . I I . . 21J . . . . 0 70NJ .. . . - - -- - - - ---- --- --Table 3-4 L TRA Laboratory Analytical Results Summary April, September, December 2002; March, August 2003; February, August 2004, and February 2005 Sample ID: MW-20 2416 Location: Skyland Date Sampled: Aug-OJ Fcb-04 Aug-0-1 Volatile Organic Compounds (ug/1) Chloromethane -· .. .. 1, 1-Dichloroethene -· .. .. Acetone 5.1 .. 10A Methylene Chloride .. .. .. Carbon Disulfide .. .. .. Methyl T-Butyl Ether 77 84 64A 1, 1-Dichloroethene .. .. .. 1, t -Dichloroethane .. .. .. rans 1 ,2-0ichloroethene .. .. .. cis 1,2-Dichloroethene .. .. .. Methyl Ethyl Ketone .. .. .. Chloroform .. .. . . Benzene .. .. .. 1, 1, 1-Trichloroethane .. .. .. Cyclohexane .. .. .. 1,2-Dichloroethane .. .. .. tTrichloroethene .. .. . . Methylcyclohexane .. .. .. Methyl lsobutyl Ketone .. .. .. cis-1,3-Dichloropropene .. ·-.. !Toluene 0.48J 0.42J .. IT etrachloroethene 0.90 .. .. Ethylbenzene .. 0.31J 1.1A !Total Xylenes .. 0.48J .. Bromoform .. -· .. 1,3-Dichlorobenzene .. -· .. 1,4-Dichlorobenzene .. -· .. IVIISCellaneous compounas Unknown(s) .. .. ·- Benzene, 1,3,5-Trimethyl -· .. ·- Cyclotrisiloxane, Octamethy1 .. ·-.. Cyctotetrasiloxane, Octamethyl -· .. .. Note: Only constituents that were detected in at least one sample during J indicates estimated value; N indicates presumptive evidence of Feh-O:: .. .. .. . . .. 70 . . .. . . .. .. .. .. .. .. .. .. .. .. 0.35J .. 1.1 1.2 .. .. .. 15J 0.55NJ 1.7NJ 19NJ A= Analyte analyzed in replicate. Reported value is •average· of replicates. Balded values exceed ROD Performance Standards Samples were analyzed following CLP protocol. --indicates not detected above the reporting limit K:\20064\205\Second Semiannual 3rd year\Feb0SSemiannualRpt-tbls.xls 3-25 MW-21 2419 Skyland Au.u-O.' Feh-0-1 Aug-0-1 Feb-05 ~ . . .. .. .. .. . . .. . . 6.3 28J 12 .. .. . . .. . . .. . . .. . . 2.3 2.6 .. .. .. .. .. . . .. . . .. . . .. . . .. . . . . . . .. .. . . 6.2 7.1 . . .. . . .. .. .. . . .. . . . . .. .. . . .. .. .. . . .. . . .. . . 0.90 0.91 .. .. .. . . .. . . .. .. . . . . .. . . .. .. 0.74 1.1 -· .. 0.44J 0.35J .. . . .. 0.48J 0.90J 1.1 .. 2 -· 1.6 ... .. .. . . .. .. .. ·- .. -· .. .. I I I I I .. .. .. 0.98J .. .. .. .. .. . . .. .. .. . . .. 3.2NJ --- [Ill) - - -.. --------.. .. ----0 0 D D APRVD. DA TE: (l 0 D REVISION ~ C> 0 ◊ <) 0 ◊ \) ~ \) () 0 ~ ~ \> \) \) ® i\ ~. 0 ~ ~p l~ ~ 0 CJ -..\ '3>® D 0 0 D I:'\ '0 0 i D 0 io D 0 ,.\® ~ D o~~o 0 <? ' ,®i\ '· ·- □ DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA TCE CONCENTRATIONS IN GROUNDWATER FEBRUARY 2005 FIGURE 3-2 D () ~ ◊ \') 0 lj 0 0 I:'\ \J \). d G D 0 0 D IT D ~D D lo D i □ CJ D 0 D 'i) D • ~ D C D ~ □ C m D □ □ D □ D □ D - DRAWN· DATE: J. MILLER 6/5/02 LAYOUT CADD FILE: Fi -3-2 FIGS.dwg 0 G ~ = ff< 0 0 0 0 0 0 'I 0 ~ 3/\l"!lO Ol:10~.Ul'O'H -... z -2 r '" -, "' z G) "' c; 0 ;q 0 r _, z I r 0 r r 0 0 0 c; ;u 0 -, 0 )> c; c; 0 -, cj -, I 0 "" "' z 0 z "' 0 0 z 0 "' z -, ;u )> -, 6 z V, z C ~ '-r W,O. NO.: 20064-138-100-0930 SHEET: OF 1 - --. 1!!!!11 --111!!!!1 l!!!!!!!I 11111 m!!!I l!!!!!!!!lll .. ---\) 0 0 0 Cl Q Cl -.VJ 0 9, \ ~~~ CJ~gs ' 1 ' ' APRVD. DA TE: REVISION 0 0 0 0 0 1,\ 0 □ 0 D ,.\ 0 -~~ \) \j 0 n D ~o ~ 0 D (;> DAVIS PARK ROAD TCE SITE GASTONIA, GASTON COUNTY, NORTH CAROLINA PCE CONCENTRATIONS IN GROUNDWATER FEBRUARY 2005 FIGURE 3-3 □ D' D ~□ D z lo D z ~□ C CJ m D D D 'i) D D D<:) D D OQ ~ ~ 0~ !i D \j \) 0 \j \J (/J 0 % %.D ~ \} \\:\ D D \'I 0 \j ~ D u = 8 0 <)Q <:>..,,..,,,, D ~ • 0 ~ □ 0 ! □ D C I m D n D " □ □ □ 3N~O m:IO:lHIVH □ □ ----- z ~ ♦ z !:\ -D r z ., fl, f'1 z G) 0 f'1 0 f'1 ., ;rj r ., z ► r D V, () r D ► f'1 a: I 0 ;;1 " r () r 0 ► () f'1 ,, cj ;;1 D 0 0 f'1 z D ., I f'1 z f'1 () 0 z () f'1 z ;rj ► cj 0 z V, z C "' ~ DRAWN: DATE: W.O. NO.: J. MILLER 6 5 02 20064-138-100-0930 LAYOUT: CADD FILE: SHEET: OF Fig-3-3 davispark.dwg 1 1 I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA,. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 3 Revision: O Date: May 2005 detected in groundwater sampled from MW-I 8, located near the south southeastern corner or the site. TCE and PCE concentrations decreased slightly in all or the wells sampled in the Fchruary 2005 sampling event when compared to the August 2004 groundwater sampling results. PCE and TCE concentrations in groundwater have generally remained stable or decreased at sampling locations during the first three years 01· the Davis Park Road TCE Site LTRA. There arc two areas where PCE and TCE concentrations continue to exceed guidance concentrations. One area is downgradient or the original groundwater contaminant plume center at the southern and eastern portion of the site. The second area is located in the central and western portion or the site. PCE and TCE concentrations in both these locations remain lower than historical detections in the former plume center. Trace concentrations of PCE that were previously detected in groundwater sampled from locations west and north or the former plume boundaries were not confirmed during the August 2004 or current (February 2005) sampling event. Pumping from community wells in this area docs not appear to be causing significant migration of the contaminant plume in this direction. MTBE was detected in the following samples: MW-3 (11 µg/1), MW-7 (0.231 µg/1), MW-8 (0.421 µg/1), MW-9 (0.151 µg/1), MW-I I (0.161 µg/1), MW-15 (0.091 µg/1), MW-17 (0.88 µg/1) and MW-20 (70 µg/1). MTBE concentrations have generally remained stahle or decreased during the first three years of LTRA. The ROD Performance Standard or 200 ftg/1 for MTBE has not historically been exceeded and five of the seven detections during the current sampling event are estimated values below the reporting limit. K:\20064\205\Second semi;mnual 3rd year\Feb05Semiannua1Rpl.doc 3-28 RFW205-2A-AT JK I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc .. expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. SECTION 4 February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 4 Revision: O Date: May 2005 CONCLUSIONS AND RECOMMENDATIONS 4.1 LTRA RESULTS SUMMARY The source for the TCE/PCE cont"rnin"tion in groundwater at the Davis Park Road TCE Site is depleted or rernoved based on groundwater sampling results reported from the tirne of contaminant discovery ( 1990) to the current February 2005 LTRA semiannual sampling event. Water sampled from wells north of Skyland Drive (MW-5, MW-14) and in the Cedar Oak Circle Subdivision (MW-12) contained concentrations of between 44 and 134 ~tg/1 TCE and up to 24 µg/1 PCE when sampled in 1990. Water sampled from MW-5 and MW-14 in February 2005 did not contain concentrations of TCE or PCE above the reporting limit. Water sampled fro1i1 MW- 12 contained TCE at 2.2 µg/1 and PCE at 1.2 µg/1. Figures 4-1 through 4-3 graphically depict the decreased levels of COCs in these wells. TCE and PCE concentrations in all wells have generally decreased over time, with the exception of the areas southwest central and south southeast of the site. Groundwater sampled from monitor well MW-I 5, located southwest of the source area, contained 39 µg/1 TCE during the current sampling event. Excluding this groundwater sample, the maximum TCE concentration for groundwater samples collected this sampling event is 12 µg/1 in groundwater sampled from well MW-I 7. The maximum PCE ·concentration is 5.3 µg/1, also detected in groundwater sampled from well MW-17. Monitor well MW-17 is located on the southeast portion of the site approaching Blackwood Creek, suggesting groundwater contamination continues to attenuate as it migrates toward this natural groundwater discharge area. K:\20064\205\Sncond semiannual 3rd ye.ir\Fetl05Semiannua1Rpl doc 4-1 RFW205-2A-AT JK - - ~ Q) C: Q) .c -Q) e _Q .c u ·.::: I- -- 1000 100 10 1 0.1 ------ -- Figure 4-1 Trichloroethane Concentration vs. Time 2419 Davis Park Road, MW-5 Davis Park Road TCE Site Gastonia, North Carolina - - - -- - ------------------------------------------------ (ROD Remediation Goal = 2.8 µg/1) Feb-90 Mar-91 Mar-92 Apr-93 May-94 Jun-95 Jul-96 Aug-97 Aug-98 Sep-99 Oct-00 Nov-01 Dec-02 Dec-03 Jan-05 Feb-06 Date K:\20064\205\SE!condSemi3rdYear\table-figures\table_figures.xls\fig4-1 - - - - -- 100 10 c, ~ Q) C: Q) .s::; ai 0 ~ .2 .s::; u ·;:: f- 1 f r 0.1 --- - - Figure 4-2 Trichloroethene Concentration vs. Time 2403 Davis Park Road, MW-14 Davis Park Road TCE Site Gastonia, North Carolina (ROD Remediation Goal = 2.8 µg/1) - -- - - - Feb-90 Mar-91 Mar-92 Apr-93 May-94 Jun-95 Jul-96 Aug-97 Aug-98 Sep-99 Oct-00 Nov-01 Dec-02 Dec-03 Jan-05 Feb-06 Date K :\20064 \ 138\ Third Ouarter\table _fig ures.xls\fig4-2 - - - CJ ~ Q) C Q) .c <ii e .2 .c 0 ·.: I- - - - ------- - - 10 0.1 • -. ♦ .. " . Figure 4.3 Trichloroethane and Tetrachloroethene Concentration vs. Time 2719 Davis Park Road, MW-12 Davis Park Road TCE Site Gastonia, North Carolina .................. · ♦ ---------------------------------------------~----(ROD Remediation Goal for TCE = 2.8 µg/1) (ROD Remediation Goal for PCE = 1 µg/1) -- Feb·90 Mar•91 Mar•92 Apr•93 May•94 Jun•95 JuI•96 Aug•97 Aug•98 Sep•99 Oct•00 Nov•01 Dec·02 Dec·03 Jan•05 Feb•06 Date K:\20064\138\Third Quarter\table_figures.xls\fig4-3 - - - 1--•··PCEI ■ TCE I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 4 Revision: O Date: May 2005 Concurrently with the migration toward Blackwood Creek, the August 2003 and February 2004 sampling data indicated a contaminant migration southwest or the source area, as evidenced by groundwater elevations and the detection of trace TCE and PCE concentrations in groundwater sampled from the western side or the site. However, the August 2004 and February 2005 sampling results show no detections of TCE or PCE on the west side or the site. Although pumping or groundwater has been discontinued over most of the Davis Park Road TCE Site area, two community wells (MW-10 and MW-I I) arc currcmly "ill active near Briar Oak Drive. west of the site. Community well MW-10, located on Skyland Drive, supplies between 30 and 40 people, and MW-I I, located on Briar Oak Drive, supplies approximately nine people, according to Mr. Doc Thompson of the Gaston County Health Department. Pumping of these wells may facilitate migration of groundwater contaminants in a westerly direction. Monitoring wells MW- 20 and MW-21 were installed in the area between the contaminant plume and the community wells, to monitor for potential migration of the contaminant plume. These wells arc located . between MW-15 (the well with the highest TCE concentration) and the currently pumping community wells. The data from sampling wells MW-20 and MW-21 do not currently indicate that COCs in groundwater are migrating toward the pumping wells. Monitor well MW-15 is located southwest or the source area, with Davis Park Road to the east and well MW-9 to the southwest. Concentrations ofTCE detected in monitor well MW-15 have lluctuated between 36 µg/1 and 50 µg/1 since September 2002 (sec Figure 4-4), similar to historical levels detected in groundwater sampled from converted community well MW-12 (located cast and downgradient or the source area) (sec Figure 4-3). TCE concentrations lluctuated between approximately 30 and 50 µg/1 in groundwater sampled from MW-12 from 1990 through 1998. TCE was detected at 2.2 µg/1 in groundwater sampled from MW-12 during this groundwater sampling event. TCE concentrations in groundwater sampled from well MW-9 (currently supplied with a carbon filtration unit) have lluctuatcd since August 2000 when first K:\200641205\Second semiannual 3rd year\Feb05Semiannua1Rpt.doc 4-5 RFW205-2A-AT JK --- - - - --- --- -- - 'a, ~ a, C a, .c -a, e .2 .c u ·;: I- 100 Figure 4-4 Trichloroethene and Tetrachloroethene Concentration vs. Time 2232 Tate Street, MW-15 Davis Park Road TCE Site Gastonia, North Carolina -■ ------------'\r-.-■------■ 10 ♦• 0.1 Jan-98 (ROD Remediation Goal for TCE = 2.8 µg/1) (ROD Remediation Goal for PCE·,; 1·µg/l) .• Aug-98 Apr-99 Dec-99 Aug-00 Mar-01 Nov-01 Date . ·•. Jul-02 Feb-03 Oct-03 K:\20064\ 138\Third Quarter\table_figures.x1s\fig4-4 ---■ Jun-04 Feb-05 - - - 1 · .•.. PCE I ■ TCE I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 4 Revision: 0 Date: May 2005 sampled, but have ranged from 6.8 µg/1 (detected in November 2001) to 16 µg/1 (detected in March 2003). These levels arc similar to groundwater samples collected from wells MW-17 and MW-I 8, located further south and downgradient of the source area toward Blackwood Creek. 4.2 CONCLUSIONS TCE and PCE concentrations continue to decrease in the contaminant plume as it migrates south and away from the source area. No additional degradation products of these two constituents were detected at any significant level in any of the groundwater samples collected historically or during the LTRA quarterly/semiannual sampling events. Graphs of historical TCE and PCE concentrations from key monitoring wells arc presented as Figures 4-1 through 4-6. Figures 4-1 through 4-3 shows the decline of COCs in groundwater sampled near the original plume center from levels well above EPA MCLs to levels either approaching or consistently below the MCLs and ROD Remediation Goals from 1990 through the current sampling event. Figures 4-4 through 4-6 illustrate the fluctuating COC levels in wells located at and downgradient of the current plume center. These values are significantly lower than levels detected at the plume center in the early 1990s, following discovery of the plume. Figures 4-1 through 4-6 support the groundwater concept model (EPA Memorandum, 25 September 2000) that the primary mechanism for the observed natural attenuation of the TCE plume at Davis Park Road is dilution as contamination essentially flushes through the bedrock aquifer. The analytical results arc consistent with the proposed cleanup time of 13 years (by the year 2017) to attain EPA MC Ls. In conclusion, the February. 2005 Semiannual LTRA sampling event results confirmed that natural attenuation is occurring at rates according to expectations, no changing conditions have arisen that might reduce efficacy of this remedy, no toxic and/or mobile transformation products arc being produced, the plume is not expanding, there is no impact downgradicnt, there 1s no evidence of a new release, and source area wells have attained remediation objectives. K:\200641205\Second semiannual 3rd year\Feb05Semiannua1Rpt.doc 4-7 RFW205·2A-AT JK --- - - - 100 10 - -- -- - - - Figure 4-5 Trichloroethene and Tetrachloroethene Concentration vs. Time 2639 Springbrook Street, MW-9 Davis Park Road TCE Site Gastonia, North Carolina - - 'a, 1 ~ ., C: ., .c -., e 0 .c u ·;:; I- --♦-----------------•---♦-~-• --+--+-----♦---------♦-----------------------.-----------·---(ROD Remediation Goal for TCE = 2.8 µg/1) • 0.1 (ROD Remediation Goal for PCE = 1 µg/1) 0.01 0.001 Jun-00 Oct-00 Feb-01 Jun-01 Oct-01 Feb-02 Jun-02 Oct-02 Feb-03 Jun-03 Oct-03 Feb-04 Jun-04 Sep-04 Jan-05 May-05 Date K:\20064\138\Third Quarter\table_figures.xls\fig4-5 - - - 1--♦--PCE I ■ TCE -- c, -=> a, C: a, .c: -a, e E .c: u ·.:: f- - -- - ------ Figure 4-6 Trichloroethene and Tetrachloro·ethene Concentration vs. Time 2816 Davis Park Road, MW-17 Davis Park Road TCE Site Gastonia, North Carolina - - 100 ~--------------------------------------- 10r: -____ -_____ -__ -__ -------~~~~-~ (ROD Remediation Goal for TCE = 2.8 µg/1) (ROD Remediation Goal for PCE = 1 µg/1) 0.1 Jan-98 Aug-98 Apr-99 Dec-99 Aug-00 Mar-01 Nov-01 Date -.. --.. .. Jul-02 Feb-03 Oct-03 Jun-04 Feb-05 K:\20064\138\Third Ouarter\table_figures.xls\fig4-6 - -- I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, lnc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. 4.3 RECOMMENDATIONS February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: 4 Revision: 0 Date: May 2005 Analytical results from quarterly and semiannual sampling of the monitor well network at the Davis Park Road Site indicate decreasing levels of COCs. Perimeter wells located outside !he plume continue to monitor for potential migration of plume constituents. PDBs continue to provide representative _samples of the principle COCs in groundwater at the Davis Park Road Sile. while al !he same lime being more easily i111plc1ncnled and cos1-cllec1ivc than low-flow sampling methods. It is recommended that PDBs continue 10 be used to sample accessible wells, and that sampling frequency be reduced to annually for the duration of the LTRA. Additionally, !he owner of monitor well MW-14, localed north and upgradienl of !he current contaminant plume, requested permission lo abandon the monitor well on her property al 2404 Davis Park Road. Because samples from this well have not contained COCs at levels exceeding the reporting limit since LTRA sampling began in September 2002, it was agreed this well is no longer necessary to the monitor well network. It is recommended that MW-14 be removed from the LTRA monitoring program and that MW-14 be abandoned. It is also recommended that well condition be recorded during each sampling event using the format provided in Table 4-1. During the current sampling event, several monitor wells in the L TRA network were observed to be in need of minor repairs (sec Table 4-1 ). Additionally, in order to minimize the chance that access to any given well in the monitor well network is denied during future annual site visits, it is recommended that a letter be sent by EPA to the property owners a week or two in advance, informing them of the expected sampling date, and in order to ensure location of all remaining monitor wells during future sampling events it is recommended that they be located with a Global Positioning System (GPS) unit. K:120064\205\Second semiannual 3rd year\Feb05Semiannua1Rpt.doc 4-10 RFW205-2A-AT JK I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly tor EPA. It shall no1 be disclosed, in whole or in part, without the express written permission o1 EPA. S:amplc Ill MW-7 MW-8 MW-10 i\·lW-11 MW-12 ~-lW-13 MW-14 t-.·1\V-15 r-.tW-16 MW-17 MW-18 MW-19 MW-20 MW-21 monitor well monitor well moni1or well rnonilor wdl carbon unit carhon unit carbon unit carhon unit caihon unit nmm1unity well CO!lllllllllil)' we)] L'\l!l\'erled well L'\lll\'Crlcd well t"OJJ\'ertcd well nin,·cned well private private private private monitor well monitor well Tahle4-l Monitor Well Physical Conditions L TRA Monitor Well Sampling Network Davis Park Road TCE Site Former Dcsigm1tion(s) Street Address MW-JD rv1W-2D MW-3D iVlW-41) CO-I. PW-2. 121 CO-13. 235 298 252 182 co-2. :mo CU-3. 2(i!J CW-5 CW-6 CW-4.49 CW-7. 175 CO-5. 195 C0-14. 286 192 ·277 S of Cedar Oak 2816 Davis !'ark Lcndora Dri vc 2415 Skyland 2419 Davis !'ark 2717 Davis Park 2819 Davb Park 2400 Skyland 2639 Springhrook 2634 Skyland Briar 0:11.; Cedar Oak Suhdivision 2719 Da\'is Park Cedar 0:ik Suhdivisi\ln 224 I Cedar Oal,; 2403 Davis l'ml 2232 Tate 2725 Puritan 2816 Davis Park 2800 Davis Park 2833 Penny Park Lcndora Drive (north of Skyland) Lendora Drive (south of Skvland) 4-11 K:\20064\205\Second Semianmml 3rd year\Feb0SSerniannualRp!•ttJ!s.x\s Well Condition Fchru:iry 2005 needs new gasket needs new gasket needs new gasket needs new gasket good could not access good good good good needs new spigot handle good no longer sampled Rcrnmmcndcd for ahandon111c11t needs new gasket good good good good good •ood Dcplh (reel below •rmmd surface 75 54 150 142 187 Unknown Unknown Unknown Unkrn)Wll Unknown 270 112 125 74 1--1.'i U11known Unknown Unknown Unknown 173 135 .. , .. . .. . '.' ~ ~ I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or ln part, without the express written permission of EPA. APPENDIX A February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: Appendices Revision: O Date: May 2005 LOG NOTES/FIELI> WATER QUALITY DATA SHEETS K:\200G41205\Second semiannual 3rd year1Feb05SemiannuaIRptdoc RFW205-2A-AT JK /2 I I WESTONW.O. NO. ______ _ Dale O"l. \o d o5 WELL EVACUATION/SAMPLING FORM I GE;NERAL INFORMATION Well No.: MW -\ Weather: -~---• L . Lin '"'- Sampling Team: -~, ~"i, . D -. -Sampler's Signalure: y_.L._, I I WELL MEASUREMENTS - Protecti\te casing: I I Damaged Comments: Locked: ti I NO Concrete Base: I Damaged Casing Diameter: ; n., Jin., HI .. Gin., Bin. Stickup Height WELL EVACUATION INFORMATION I A. Total Oeplll (fop of Casing = TOC): Wen Evacuation Method (baiter. submersible pump) 2 ~1-, -B. Depth 10 Wai,,, (DTW) (J'OC): C. Column of Standing Waler (C=A·B): Begin Well Evacuation (rune): I 0. Purge Faclor. ~ Evacuation Rate (9pm): , (2in.:0.16, 3in.:0.3 , 4in .. :0, , Sin.:1.47, 8in.:2.:1) Orav.<lawn Observed (It): E. · One Weil Volume (gal/LF) (E=CxO): -stop Evacuati:,n (Time/Reason): I F. # Volumes to De Purged (3): Restart Time: G. Total Gallons to be E:vacuated (G=FxE): Well Pumped Dry: YES I NO INDICATOR PARAMETERS I Time: ...._ Gallons Purged: -0.0. (mg/L): ~ t--.. I ORP (mv): . -.:, -I---_ Temperalure (DC): r---.._ pH: r..... I Specffic Conductivily(s): ---... other. , Odor. SULFUR I PINETAR / NAPL Obseived: TAR I FOAM I I End Well Ev~cu:.lion (lime): Ttme/O~te: Total Volume Purged (gal): T me/Oale Restart SAMPLE COLLECTION INFORMATION I Sample ID: ....... • ..-\ Spilt Sample: YES/NO Sample Time/Dale: \ ~tl """ Cl"' \.,,\-c- DupUcale: YES/l(CJ\ , Org;mi:z;rtion: I Field Blank: YES/IIO Par'alneters: \/0 C.5,. Parametars: SAME I OTHER I COMMENTS I I I I Z:0 :391/d SclM 1LESl>Z:91>01> 9E:z:, S00Z:/Z:0/S0 I I I I I I I I I I I I I I I I I I I WESTONW.O. NO. ______ _ Date WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Well No.: ~"->-" We.ither.. ·'5.,.,..,,-.W\.lf\._ "iO '.S. Sampling Team: c _ • lcac-CJ"' -•• Samµle(s Signature: ,,_. '1 . . -~ ' • WELL ME.ASUREMENTS Proledive Caso,g: lrtlaci I Damaged Comments: l.Od<ed: ~ I NO Concrete Base: lrj!Sq I Damaged Casing Diameter: 2il!'., Jin.,....., 61n., Bin. Stickup Height WELL EVACUATION INFORMATION A. T 0131 Depth (Top of Casing ~ TOC): Well Evacuanon MetnO<l (baller, submersible pump) B. Deptfl to Watsr (DTW) (TOC): ~ .r fti\ ' . C. Column of Standing Water (C---A-B): Begin WeU Evacuation [nme): . '\' •'• .. ,D. Purge Factor. Evacuation Rate (gpm): (2in.:0.16, 3ln.:0.37. 4in.:0.65, 6i1l.:1.47, 8_in.:2.61) Drawdown Observed (ft): "\ E. One Well Volume (gal/LF) (E=Cld)): Stop ~vacua1ion (Tlflle/Reason): \. F. # Volum8S to be Purged (3): Restart Time: '\ G. 'f o!al Gallons to be E'.vacuated (G•FxE): W•II Pumped Dry YES I NO INDICATOR PARAMETERS Time: - Gallons Purged: ------D.O. (mg/I.): r----..__ ORP (mv): ------Temperature (DC): ------pH: ------Specific Conduclivity(s ): -----Other: --....... Odor. SUL.FUR I PINE TAR I NAPL Observed: TAR I FOAM I End Well Evacuation (Time): 111TlefDate: Total Volume Purgoo (gal): TI/Tle/Dato Restart SAMPLE COLLECTION INFORMATION Sample ID: 1'1-14-~ Spl~ Sample: YESl!IO J Sample T .ne/Date: ...., I .._ 1 I" c -iq I'-- Duplicate: YE~ ----, Otganization: F.,ld Blank: YE Parameters: '11)(.,S Parameters: SAME I OTHER COMMENTS E0 39\/d 1LESP<'.9t>0t, . ·-- I I I I I I I I I I I I I I I I I I I WESTON W.O. NO. ______ _ WE1.L EVACUATION/SAMPLING FORM GENERAL INFORMATION WeR No.: ''"'•, -4 Weather: 1.1.0 ,.,_ .cJ~ .I Sampling Team: ~ \ce-ir.. \ v -• 11 a. Sampler's Signature: . ".$,,~•/ WELL MEASUREMENTS . Protectlve Casing: lnt)lg I Damage<l Comments: Locked; ~ I NO Concrete Base: I~ I gamagoo Casing Diameter. 2in., 3in., l4'~-. 6in., Bin, Stid<up Height WELL EVACUATION INFORMATION A Total Depth (Top of Casing= TOC): WeU Evacuation Method (baiter, sUbmerst:ile pump) B. Deplh to Wat,,,-(OlW) (TOC): "!, i, ;1,0 C. Column of Standing Waler (C>-A-8): Begin WeR Evacuation (Trne): 0. Purge Factor: ', .. (2in.:0,16, Jin.:0.37. 4in.:0.65, 6i11.:1.47, 8_in.:2.61) Evacuation Rate (gpm): Orawdown Obserwd (ft): E. Ona Well Volume (gal/1.F) (E=CxO): Stop Evacuation (T1JT1e/Reason): F. # Volumes 10 be Purged (3): Restart Time: G. Total GallaM to be Evacuoted (G=~xE): Well Pumped Ory: YES I NO INDICATOR PARAMETERS Time: . ..._ Gallons Purged: -c.. 0.0. {mg/I.): ORP(mv): •. -----Temperature (DC): ---. pH: ~ Specific Conduciiviry(s): other. Odoc SULFUR I PINE TAR/ NAPl Observed: TAR I FOAM I End Well Evacuation (Time); Time/Date: Total Volume Purged (gal): T me/Oare Restart SAMPLE COLLECTION INl'ORMA TION Sample ID: mw-L-\ Split Sample: YESJ(«'\ Sample Time/Date: \'1.-"1.S -L .. \..,~ • Duplicate: YES/111:D . Organization: Field Blank: YES/llO\ Parameters: Pan,melers: SAME I 011-iER \foC..~ COMMlaNTS P0 391/d 1LE9P09P0P 9E:01 9000/00/90 I I I I I I I I I I I I I I I I I I I Wl=STONW.O. NO. ______ _ Date O"t-\.6-tJ P':, Wl::LL ~ACUATION/SAMPUNG FORM GENERAL INFORMATION Well No.: 'N'\W .C:::: Weathet: Sampling Team: Sample(s Signature: WELL MEASUREMENTS Protective Casing: lntae! I Damaged Comments: Locked; YES I NO Concrete Base: Intact I Damaged Casing Diameter: 2i:i., Jin., 4in.. 6in., Bin. Stickup Height WELL EVACUATION INFORMATION A Total Depth (Top ofC..sing ~ TOG): WeU Evacuatton MetllO(I (baiter, submersible pump) B. Depth to Water (DlW) (TOC): C. Column of Slamling Water (C:A-B): Begin Wen Evacua!lon (Tome): --··· -D. Purge Factor:. Evacuation Rate (gpm): (2m.:0.16, 3in.:0.37, <$;n.:0.65, 6in.:1.47, 8_in.:2.61) . Dra,,.Jown Observed (R): E. One Well Volume (gaVLF) (E=Cx!J): Stop Evacuation (flme/Reasan): F. ·#Volumes to be Purged (3): Restan Time: C. Total Gallons to be Evacuated (G=Fxf.): We" Pumped Ory: YES I NO INDICATOR PARAMETERS Time: \'1.llt \"\.).1 \'i,t.R l 4.'Z}\ Gallons Purged: 0.0. (mg/L): .... ,~ !..'68 t. ,'-\l \,.\{I.I ORP (mv): \q'(,8 -zdl 't-1.1 ., 1.,1..0 Temperature (DC): ,c: t.C\ l t. :~-z. \I._.,,~ 11 •• 1 0 pH: I. I II. ~.,"1 is.ti. '5.1 •,\ Specific ConductMty(s): \1\5 \t\• l'\O l~ t other. \U• ..a·. -1: ... I ~ 0" 0 '°' o. ?,'( B/IC Odor. SULFUR / PIN<: TAR / NAPl Obsen,ed: TAR I FOAM I End WeH Ev1;1cuation (rane): Time/Date: Total Volume Purged (gal): Thie/Date Restan: SAMP.LE COLLECTION INFORMATION Sample ID: ~"',":, $pl~ Sample: YES/NO Sample Time/Date: .... , __ , ..... 11{~0 Duplicate: YE~J I Organizstlan: Field Blank: YESJtt9 Parameters: Paramelers: SAME I OTHER COMMENTS S0 3911d 1LES1'1:9t,0t, I I I I I I I I I I I I I I I I I I I WESTON W.O. NO. ______ _ 0ate oz..1 at--16 s WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Wen No.: ""w ,.; ~ e::,.... Weather. :io 'IS . O.a IIAC.,._. -r Sampling Team: :S oi\"4 5 • -0 . Sampler's Signature: u WELL MEASUREMENTS Protoctive Ca$ing: lntad I Damaged Comments: Lodu,t YES I NO .· .. Concrete Base: lnlad I Damaged Casing Diameter. 2in .. 3in., 4in., 6in .. Sin. Slld(up Height ·• WELL EVACUATION INFORMATION A. Total Depth (Top olC<osing = TOC): WeD Evacuation Method (bailer. submeri;ible pomp) B. Depth to Water (OTW) (TOC): C. Column of Standing Water (C=A.S): Begin WeU Evacuation (Tm,): 0. Purge Factor: Evacualion Rate (gpm): (2in.:0.16. Jin.:0.37. 4in.:0.65. 6in.:1.47, Sin.:2.61) Drav.oown Obse<ved (fl): E. One Well Volume {gal/LF) (E=CxD}: Stop Evacuation {Trne!Roa:son): F. # Volumes to be Purged (3): Restart T vr1e: G. Total GaUons to be Evacuated (G=FxE): Well l'tJmped Oty: YES I NO INDICATOR PARAMETERS Time: \!")"!,«-. 1a--.:fo \"'"{I \,-1.(1, I I ""{'2, \0 I.II,( Gallons Purged: 0.0. (mg)L): s.1c, ">,. ~I, ~.'~1 \.,.~(. S.Q. I l,.~'{ ORP (mv): l,l-1.. i:z& 1~1(·' t11 l'lU ,_,u Temperature (DC): 1,.1,u \'l.-~t 1'1,:-(;0 t1 ,Mil \'\.0., ,~.10 pH: I,.\ "1 '-;"I :.1 $,'\"'I. ~.1'\ "$.,"!> '5. ",'{ Specific Conducti-lity(s): N"I , .. \'-1& \\Cl 1'<7 \'{ l Other. ~ • -l • ,l • .L.,,. 0.1,1 o. C, .. e,9-1. --O,'tS Odoc SULFUR / PINE lYIR I NAPL Obse!Ved: TAR I FOAM I End Well Evacuation (r,me): Tlme/Da~: Total Volume Purged (gal): Time/Date Restlrt: SAMP\..E COLLECnoN INFORMATION Sample 10: tl\W-"¼ Split Semple: YES/NO Sample Tune/Da~ , ... ,.'5 rii"LI ·• I -• 0 Oupl<:ate: YE~ Organizalion: Field Blank: YE • Parameters: Parameters: SAME \/oC.,S I OTHER COMMENTS . 90 39\/d 1LESl>C:91>01> I I I I I I I I I I I I I I I I I I I WESTONW.O. NO. ______ _ Date fild.oJo:5 WEU EVACUATION/SAMPLING FORM GENERAL INFORMA TIDN Well No.: l'I\W-~ Weather. S.,mpling Team: .::;.., II.es _n Sample(s Signature: ....-WELL MEASUREMENTS Protective casing: Intact I Damaged Comments'. Locked: YES I NO Concrete Base: Intact I Damaged . Casing Oiamet:er: 2in., Jin., 4/n., Gin., 8iri. St;c:J<up Height: .. WELL EVACUATION INFORMATION A Total Depth (fop of Casing= TOC): Wen Evacuation Method (bailer, submersible pump) B. Depth to Wate< (DlW) (TOC): C. Column or Standing Water (C=A-B): Begin Wen Evacuation (Tme): D. Pul1J<l Factor: Evacuation Rau, (9pm): (2in.:0.16. Jin.:0.37. 4in.:0.65, Gin.:1.47, 8_in.:2.61) Or.M<Jown Obs8fV8d (ft): E. One. Well Volume (gal/LF) (E•CxO): Stop Evacuation (Time/Reason): F. # Volumes to be Purged (3): Restart lime: G. Total Galklns to be Evacuated (G=FxE): Well Pumped O,y: YES I NO INDICATOR PARAMETERS Time: \'U)O \1,0\ \1,.62, run 11.v'f Ganons Purged: 0.0. (mg/L): 1-~S 1-'&~ ,.~\ 1.u" 1-,_ .... ORP(mv): \\~ lO I L-i~ \-:l-5 l~, Temperature (DC): t2-la I ~ .'1.1 ,~ q1 11. \\~ l'5.'-l.g pH: 6.C\1 L..0~ 1.· "'I i..oi 1.,0~ Specific Conductivity(s): L01. \\S I" I ,-. I lO I Othec ~1ul..\•·~-t1.,mi'\ l.'5~ o. ?_'{ .. 1'2. "· 1 '1 ~ Odoc SULFUR I PINE TAR / NAPL Observed: TAR I FOAM I End WBII ~vacuation (Time): Tirne/Oate; Total Volume Purged (gal): lime/Date Restart SAMPLE COLLECTION INFORMATION SarnplelD: l'-'\IJ -P. Splo Sample: YES/NO Sample Time/Date: 1'2..l'l!5 . 01-loLl "'"' Ouplate: YES/r\11 • Organization: Field Blank: YES/l icr Parameters: \Jbl.s Parameters: SAME I OTHER COMMENTS - LB 391/d SclM IL£SN'.9P0P I I I I I I I I I I I I I I I I I I I WESTON W.o. NO. ______ _ Date WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Wen No.: W\'•, • ., Weather. Sampling Team: ~n I, ..... -o ... A. Sampler's Signature: -WELL MEASUREMENTS Protective Casing: Intact I Damaged Comments: Locked: YES I NO Concrete Base: Intact I Damaged Casing Diameter: 2in.. Jin., 4in., 6in., Sin, Stickup Height WELL EVACUATION INFORMATION A. TOia! Depth (Tap of Casing= TOG): Well Evacuation Method (bailer, submemibte pump) B. 0.pth ta Wate< (DlWJ (TOC): C. Column of Standing Wa1"< (G-'A-B): Begin WeR Evacuation (Time): D. Purge Fact<,r. Evacuation Raia (gpm): {2in.:0.16, 3in.:0.37, 4in.:0.65, 6in.:1.47, 8_in.261) Dta\\oown Obsetved (It): E. One Weil Volume (gaVLF) (E=Odl): Stop l=vacuation (fime/Reason): f. ;, Volum~ to be Purged (3): Restart Time; G. l'olal Gclllon$ to be Evacuated (G:::FxE): Well Pumped Dry: YES I NO INDICATOR PARAMETERS lime: \0\\1 '" l<i \ll'l.D \OU. 16 'I. 'f \I)'!,$° GaRons Purged: D.0. (mg/L): I. ."I'"{ l,. 1\11. l,. 'i :, t..i I " . ., , 1,,'\L\ ORP (mv): I 'il',I. 3 \<\I, I'll .11~: ,,.i_ l'l...C A. Temperature (DC); 1-t ~'l ,._ 'lla 13. ~5 I'{ .'5¥, l'l.5~ \~.• 1. pH: '5,1\ I ~."l"t ';j, KU s.~i.. s ·", C.' 0 Specific Conductivlty(:J): liO 11'5 11 '-I ,1s ,,s \1o, Other. 7 11..(\.: A., -le , { W',l( '. '\'f .'1~ --~ -l?.S'..:i Odor. SULFUR / P!Ne-< AA / NAPL Observed: TAR I FOAM I End Well Evacuation (fime): TlfTle/D~te: T.otal Volume Purged (gal): Time/Date Resia,t: SAMPLE COLLEGTION INFORMATION Sample ID: tf>w-"\ Sp!a Sample: YES/NO sa·mple Tim~uate: o~ •-•111.:. ... "7 ..:; 0upflcafe: \YE~O Organization: Field Blank: YE,~ Parameters: \IOL~ Parameter..: SAME. I OTHER COMMENTS ~-- 80 381/d Sc!M TLESl>1:91>0t> 9E:1:1 S001:/1:0/S0 I I I I I I I I I I I I I I I I I I I WESTON W.0. NO. ______ _ WELL EVACUATION/SAMPLING FORM G!aNERAL INFORMATION Well No.: """'-' -l U Weather: io·s • ~n-•~"t' Sampling Team: ~~~~, 0 ..... • A Sample(s Signature: . y WELL MEASUREMENTS Protective Casing: Intact I Damaged Comments: Lod<ed: YES I NO Concrete Base: Intact I Damaged Casing Diameter: 2in .• 3in .. 4in., 6in., Sin. Stickup Height: WELL EVACUATION INFORMATION . A. Total Depth (Top ofGaslng = TOC): Well Evacuation Method (bailer, sUbmersible pump) B. Depth lo Wale< (DTW) (TOC): C. Column of Stand;ng Water (C=A·B): Begin Well E.acualion (Tome): D. Purge Factor. Evacuation Rate (gpm): (21n.:0.16. 3in.:0.37, din.:0.65, ~in.:1.47, B_jn.:2.61) Drawdown Obseived (ft): E. One Well Volume (.gal/LF) (E=C)([)): Stop Evacuation (TimefR0ilson): F. # Volumes lo be Purged (3): Restart Time: G. Total Gallons lo be Evacuated (G".'fxE)·. Well Pumpod Dry: YES I NO INDICATOR PARAMETERS Time: I'( O"{ \'IDS \'1,0\, \'-\ti1 \'-lt)A GaDons Purged: D.O. (mg/L): \t'o"> c;-.c;y s.'112. 1&:•(1.. l •• \l ORP(mv): ,1\. t \1t.-.'f \1$.\1,' \1~-S \"\~., Temperature (DC): \ ~-'Ol, ..... ,1. It. \C: \le-\\ \I..\O pH: I, .-s "\ (._ 'i l1 , •. '311 I, .-:ti. 1..1'!1 Specific_ ConduC1ivity!s):. l10 .'.J-5 \11-nz. \1?. \11 other. -.1.S rr. l'\ o.,'3 I\ _",(" !, 0:1,a Odor. SULFUR / PINE TAR / NAPL Observed: TAR I FOAM I Encl Well EvacuaUoo (Time): Time/Oate: Total Volume Purged (gal): Time/Date Restart: SAMPLE COLI.ECTION INFORMATION Sampia ID: l"f\W-\0 Spl~ Sample: YES/NO Sample lime/Date: cn.lc,..l~ , \'1 [() Duplicate: YESIN Organiution: Field Blank: YES 9 Parameters: \fDL s Parameters: SAME I OTHER COMMENTS ."(" .. , ... n-.... o.,p •l"'c,.'IU .,,, .. ~\ • IJ • · 0---"11.h, .. < n-• -• •.JI. fl...L •'!I• \ I • I ""-()Jl. LL ~"'--'-· ' \ • . . -~ . 60 391/d Sc!M I I I I I I I I I I I I I I I I I I I WESTON W.O. NO. ______ _ Date Ql-lo'(, I os WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION wen No.: tAW-\\ Weather. ?.n. • ~ _ C,u,.,._1= SamplingTeam: .,_ .. <..-:1,--Sample(s Signature: WELL MEASUREMENTS Prot..ctive Casing: Intact I Dam"!JOO Comments: Locl<ed: YES I NO____..- Concrete Base: Intact _t..--CTamaged Casing Diameter: si'(. 3111., 4in., Gin., Bin. Stici<up Height WELL EVACUATION INFORMATION A. Total Depth (Top of Casing = TOC): I WeR Evacuation Method (bailer, :submersible pump) B. Deplh to W•lcr (OlW) (TOC): / C. Column of standing Water (C=A-B): / Begin Well Evacuation (rme): 0. Purge Factor. · · · ·; r Evacuation Raia (gpm): (2ln.:0.16, 3in.:0.37, 4in.:0.65, 6in.:U , 8_in.2.61) Drawdov.n Observed (ft): E. One Well Volume (gal/LF) (E~c.O): . Stop Evacuation (Time/Reason): F. # Volumes to be Purged (3): Restart Time: G. Toi<>! Gallons to be Evacuale<l (G=FxE): Well Pumped O,y: YES I NO INDICATOR PARAMETERS .... :i:" Tme: n9iSO 0'6~2.. o~t&it oQC:1. l)IVO ~ Gallons Purged: --~ _. - D.O. (rng/L): 1 .I\~ 1.tt, 1.1'\ ., ·"-c:; 1.'\'1' ORP(mv): \'l'i: ~ \qLI ."\ \t\\;~-, . ...._.., f ,.,,. Temperature (OC): \-..1,1~ 11-~0 11.1'11. 11.1.!S 11 .\"3 pH: C .11 lo,.\~ t..o \ ~ ~1.. 5.&o Specific Conductiviry(s): '.ls I, I '2,} t\'\ II '( 111 Other.\··_\.., 1: .I..... ,::'.,..~ fl -l1 h I")._ ,.o'\ ~ Odor. SULFUR / PINel'AR / NAPL Obsoived: TAR I FOAM I End Well C:vacuation (Time): 'frne/Oate: Tolal Volume Purged (gal): Time/Date Reslall: SAMPLE COLLECTION INFORMATION Sample ID: IV\W•\I Sp[JI Sample: YES/NO Sample Time/Dale: .,-, -, . - "" ",Q -O\Jplicate: YES!ffq Organization: Field Blank: YES/Nil Parameters: \fOL1 Paramete<S: SAME I OTHER COMMENTS . 01 391/d SclM lLESt>l:91>01> I I WESTON W.O. NO. ______ _ WELL EVACUATION/SAMPLING FOl>M I GENERAL INFORMATION WeU No.: N\h \ -\'2.. Weather. \> A.11.-(_ \ -J. '-lt\ ·~ I SamplingTeam: <,...;~-,_ '->-Sampie(s Signature: I/ V . . ~ weu ME.ASUREMENTS Protectiw Casing: 1rp_Jt I Damageo • Comments: I Locked: YES I ~ c:;.1,,., J_ ~\<.e~ Coricrere Base: ln!QI:' I Oa~ Casing Diameter: Zin,, 3in., 4in., (Gin.~ .&n. Sticl<up Height WELL EVACUATION INFORMATION I A Total Oep111 (Top of Casing = TOC): Wen Evacuation Method {bailer, :svbmef'3ble pump) B. Depth lo Wat.or (OlW) (TOC): \'°(. (),.--C. Column of standing Waler {C=A-8): Begin Well Evacuation (Trne): I o. Purge Factoc Evacuation Rate (gpm): (2in.:0.16 . .'.3in.:0.37, 4in.:0.65, Bin.:1.47. 8_in.:2.61) Drawd0"'1 Obse,ved (ft): I E. One Well Volume (gal/LF) (E=CxO): Stop Evacuation (rime/Reason): F. # Volumes co t>e Purged (3): Restart 'Time: G. Total Gellono to be Evacuated (G=FxE): Well Pumped Ory: YES I NO I INDICATOR PARAMETERS T1me: ............ Gallons Purged: -----I D.O. (mg/L): ..........__ ORP(mv): ..........__ .. ., Temperature (OC): ----pH: r-- I Speclt1c Conductivily{s): -----Otller. t-. Odor. SULFUR / PINE TAR/ NAPL Observed: TAR I FOAM I I End Wen Evacuation ('Tiriie); T1me/O:ite: Total Volume Pur9act {gaij: Time/Date Restart I SAMPLE COLLECTION INFORMATION Sample ID: ""', •, -\'Z... Splil Sample: YES/NO Sample Tlme/Date: ,t,,1 -.. in.\o,1,.,,c- I Duplic;atc: YEStWJ . Organization: Field Blank: YES/119 I Parameters: \JQ(..S, ·Parameters: SAME I OTHER COMMENTS I I I I 11 39\/d I I I I I I I I I I I I I I I I I I I WESTONW.O. NO. ______ _ WELL EV ACIJA TION/SAMPLING FORM GENERAL INFORMATION Well No.: 't<'-w~\Y Weather: s ............ . . . '40 'S. Sampling Team: s.~;vJ'<.. .., __ •• Sampler's Signatum: -.. V ~' . . V WELL MEASUREMENTS '- Protective eas;ng: lnfacl I Damaged Comments: Loeke<:l: YI'~ I NO Concrete Base: lnlii\:t I Damaged casing Diameter: 2in., 3in,, 4in,, Gin., Bin. SUcki4, Height WELL EVACUATION INFORMATION A Total Depth (Top of Casing= TOC): -Well Evacuation Method (ballar, submersible pump) B. Dep1h to Wat,,r (DlW) (TOG): LI \a.\\ • C. Column of standing Water (C=A-8): Beglo WeU Evacuation (Hrne): n-· P~r-ge Fa,;.tor. Evaaiation Rate (gpm): (2in.:0.16, 3ln.:0.37, 4in.:0.65, Bin.:1.47, 8in,:2.61} Dr..wdown Observed (fl): E. One Well Volum,, (gal/LF) (E=C.O): Stop Evacuation (Tune/Reason): F. # Volumes to be Putged (3): Restart Tome: G. Total Gallons to bo Evacua<ed (G=FxE): Wi;,11 Pumped Ory: YES I NO INDICATOR PARAMETERS Time: Gallons Purged: ......___ D.O. (mg/L): ---------ORP(mv): ........ .. Temperature (DC): ~ ..__ pH: -,___ Specific Conductivlfy(s): .....___ other:: ~1----- Odoc SULFUR I PINE TAR/ NAPL Observed: TAR I FOAIIJI' I End Wt:in Evacuation (Time): Time/Oare: Total Volume Purged (gal): Trne/Date Reslart SAMPLE COLU:CTION INFORMATION Sample 10: \"M•J -\'4 Split Sample: YES/NO Sample Time/Date: \SOC). cue,\"-<. Duplicate: YES!f'«ll Organization: Field Blank: YE~ Paramete~: Parameters: SAME I OTHER COMMENTS GI 381/d SclM TLES1>1'.91>01> I I I I I I I I I I I I I I I I I I I WI:STON W.O. NO. ______ _ WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Well No.: tt\lJ.l-\..,,. Weather. Sampling T earn: "::>\),~~•\]it:>•·· A Sampler's Signature.: WELL MEASUREMENTS Protective Casing: Intact I Damaged Comments: Locked: YES I NO Concrete Base.: Intact I . Damaged Casing Diameter. 2in., 3in., 4in., Gin., Bin. Stickup Height WELL EVACUATION INFORMATION A. Total Depth (Top of Casing= TOCt. wen "EVacuc!tlOn Method (bailer, sUbmerslbte pump) B. Depth to wata, (OlW) (TOC): '-\ -1 l, . -C. Column of Standing Wate, (C=A-B): Begin WeU Evacuation (T<ne): f---••-' "' Evacuation Rate (gpm): O. P'-'•::r:-factor · (2in,:0,16, 3in.:0.37, 4in.:0.65, 6in.:1.47, a_;n.:2.61) Dramown Observed (ft): E. One Well Volume (gal/l.F) (E=CxO): Stop Evacuation (Time/Reason): F. H Volumes to be Purged (3)'. Restart Time: G, Total Galleno to be Evacuated (G=:FxE): Well Pumped Ory. YES I NO INDICATOR PARAMETERS Tme: -Gallons Purge~: ------D.0. (mg/I..): ------ORP(mv): ' " ------' ' Temperature (DC): ------pH: 'f-.._ Specific CooductMty(s): --Other: ~ Odoc SULFUR ' PINE TAR I NAPL Observe<!: TAR I FOAM I End Well Evacuation (Time): Time/Date: Total Volume Purged (gal): lime/Date Restart: SAMPLE COLLECTION INFORMATION Sample 10: M\o,. \'5 Spr.1 Sample: YES/NO sample lirne/Oate: \'f).'i . ti ,._ I ti\ \ D..S. lltiplicale: YE:s/f'IU_ Organcuruon: Field Blank: YE""l!O J P·arameters: Parameters: SAME I OTHER '10 <...s COMMENTS E, 39\/d S~M 1LES1>Z:91>01> I I I I I I I I I I I I I I I I I I I WESTON W.O. NO. ------'----Date O'Ll c, HOY WELL EVACUATION/SAMPLING FORNI GENERAL INFORMATION WeO No.: fVl.u.} A \.Q Weather. ' Samplil1g Team: ~ ~ ·.-~ ...... ~ SampJef's Signature: ~ WELL MEASUREMENTS Protective Casing: Intact I Damaged Comments: Lt>d<ed: YES I NO ' Conctt!!lte Base: Intact I Damaged Casing Diameter. 2in .• 3in., 4ITT., Sin .. Sm. Slid<up Height WELL EVACUATION INFORMATION A. Total Depth (Top of Casiflg = TDC): WeD Evacuation Method (baller, submersible pump) B. Depth to Water (OlW) (TOC): c. Column of Standing Water (C=A-8): Begin Well Evacuation (Time): D. Purge Factor: Evacuation Rate (gpm): (2jn.:0.16. 3in.:o:37, 4in.:0.65. 6in.;1.47, 8_in.:2.61) Drawdown Obse1ved (11): E. One. Well Volume (gaVLF) (E=CxD): Stop Evacuation (Time/Reason); F. 'it Volumes ro be Purged (3): Restart Time: G. Total Gallons to be Evacuated (G=FJ<E): Well Pumped Dry: YES I NO INDICATOR PARAMETERS Tune: \\i.S ll ~I, \~1 11-.. R lf.i'I GallOfls Putged: 0.0. (mgll): s.<l.e> 4. l I '!,.15 ~.,s \(.','1 ORP (mv): 11..;7 s a,·\ 'i~."t c:; l, ''3, Temperature (QC); \.::: .o"3 l'S-l~ 1< ·"'' \'5.Ll3 l'!i. l(O pH: S. "I. I '5. 1iHo $.85 s.~c; is. '{5 Specific Conductivity(s): \'2.-\ 1a.~ l ':1 ;}_ l:I; ll3 otller. \ \I.I \;,, il.I ~ r;i... "\ '\)."{ ,..:.. t'1n 1\5 Odor. SULFUR I PIN!::'TAR I NAP!. ObseMld: TAR I FOAM I End Well ~vacualion (rme}: TJme/llate: Total Volume Pursed (gal): T,me/Dale Restart: SAMPLE COLLECTION INFORMATION Sample ID: q\\i, _., '. Spl~ Sample: YESJNO Sample Time/Date: 11-i..lo2-lr><:. . 114.0 Duplicate: YES/1\_0) Organizalion: Field Blank: YE~ Parameters: './ 0 l-S Pa,ameters: SAME I OTHER COMMENTS 1'1 3:l\/d Sc!M 1LES1'i:91'0t, .. . I I I I I I I I I I I I WESTON W.O. NO. ______ _ Date (Y1-\oyo5 WELL EVACUATION/SAMPLING FORM GENERAL INFORMA TJON Well No.: t'l\v...,-\7 Weather. A"-••,.,<•' X<J>·• SamplingTeam.: -::,.;;~ ::> -·-Sampler's Signature: I Wl:U. MEASUREMENTS Protective Casing: intact I Damaged Comments: Locked: YES I NO Concrete Base: Intact I Damaged Casing Diameter: 2in., 3in., 4in., 6in_, Sin. S~ckup Height: WELL EVACUATION INFORMATION A. Total Depth (Top of Casing~ TOC): WeR Evacuation M'ettlOO {bailer, submersible pump) B. Dep<h 10 Woha, (DlW) (fOC): C. Column of Standing Water (Cu:A..S): Begin Well Evacuation (llme): D. Purge Factor. (2in.:0,16, Jin.:0.37. 4in.:0.65, Sin.:1.◄7, S_in.:2.61) • Evacuation Rate {gpm): Orawdown ObseNed (fl): E. One Well Volume (gal/LF) (EaCxO): Stop Evac;uatJon (Time/Rea:son); F. # Volumes to be Purged (3): Restart Time: G. Total Galk)ns to be Evacuated (G=FxE): Well Pumped Dry: YES I NO INDICATOR PARAMETERS Tane: 0'-l'ft-ot1G. oitso Gallons Purged: D.O. (mg/L): ~ '>4 ,. (.,'t' ~.71 ORP(mv): 14-1 is'fJ Ir..-.. Temperature (DC): C 'l (. (,,• ~ { "-~'• pH: io~ S,oY t:;.tr. Specific Conduc:tivity(s): 10(. '0"5 JOC. O!her. 7..._,...t...,•J \J ~ 1,.G,S 0. O""-Odor. SULFUR / PINE TRK / NAPL Observed: TAR I FOAM I End Wet! Evacuation (Time): rrneJDate: Total Volume Purged (gal): Tune/Date Restart: SAMPLE COLLECTION INFORMATION Sample_lD: Spfit Sample: YES/NO Sampte TITTle/Date: 0 '\ 'S S • o"L-l e-tl Q c::: Duplicate: YES•'-!', ) Organization: Field Blank: YE,;,~ ~ Parameters: Parameters: SAM~ I OTHER COMMENTS Yu.,~ UOT ,.,or'-'·-L. + .JI.-· :, ~A. -~ .I... I,.,,: I).' •• //.'.L!J. • ...-;-a~/c}..._..,, u I I • • . . S1 38\/d Sc!M -- ......,,,. .. _,, . ' I I I I I I I I I I I I I I I I I I I WESTONW.O. NO. ______ _ Dale OUO'Uo5 WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Well No.: mw -t9. Weather. D, ·-_ -.L . -"ln I c Sampling Team: .~;lb., I U'-Samplel's Signature: . . WEU MEASUREMENTS Proledive Casing: Intact I Damaged Comments: LOcked: YES I NO Corioete Base: Intact I Damagod casing Diameter. 2ln .• 3in., 4in., Gin., Bin. Stickup Height WELL EVACU.AllON INFORMATION A. Total Depth (Top or Casing = TOG): WeD Evacuation Method (ba~er, submersible pump) B. Depth to Wa,,,,. (OTW} (TOC): C. Col\Jmn of Standing Water (C><A-B): Begin Well Evacuation (Tane): -· -·· D. Purge Factor. Evacuation Rate (gpm): (2in.:0.16, 3In.:0.37, 4in.:0.65, 6in.:1.47, Bin.:2.61) . Dmwown Observed (ft): E. One Wen Volume (gal/LF) (EeCxD): Stop Evacuation (Time/Reason); F. # Volumes lo be Purged (3): Restait lime: G. 'J'otal Gallon$ to .be Evacuated (G=F'xE): Well Pumped Ory; YES I NO INDICATOR PARAMETERS TQ'Tle: Gallons Purged: 0.0. (mg/L): ~ .t. "\ 4 .'\~) 't-10 ~.\l l'\.O~ ORP(mv): it,, 'l '\'i, '> '('\.'{' Y\.C l'I.. X Temperature (DC): fi.1_\ 1.1 ·:, "l• ':> S ,. ':, 1.,, pH: \a. 01.f 'l.' I s .1, ~., ... ~.1, Specific ConduCliviry(s): l '-'~ l "\ 1'1 l t "l I I'\. I other.-\""' 't). ')\oOO )lflO() ~\()II\! 'Jinn )\,ob Odor. SULFUR / PINE TAR / NAPL Observed: TAR I FOAM I End Well E~cuation (irmo)~ l"me/Date: Total Volume Purged (gan: Time/Date Resta~; SAMPLE COLLECTION INFORMATION Sample ID; \'t\W ,l!!i Split Sample: YES/NO Sample Time/Date: -I o• l,,c:, 0'\15 Duplic<lte: YES/~. , Organ~tion: F"ield Blank: YES/1'1<.J Parameters: Parameter.;: SAME I OTHER VOl-S COMMENTS 91 3911d S?JM 1LESPZ:9P0P I I I I I I I I I B I I I I I I I I I WESTON W.O. NO. ______ _ Date 11't{o-z,los WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Well No.: 'C'I\W . \"I. Weather: ':>Q'S . o ... _c:.._~ 5amplillg Team: <:..,a ~s . ~ o \.\ el\. Sample(s Signature: WELL MEASUREMENTS Protective Casing: Intact I O,niaged Comments: L.ocked: YES I NO -··, Conc:rere Base: Intact I Damaged Casing Diameter. 2in .• 3in .• 4in., 6in., Bin. Slic:kup Height .. WELL EVACUATION INFORMATION A. T 01a1 Deplh (Top of Casing = TOC): Well Evacuation Method (bailer, submersille pump) B. Depth lo Water (OTW) (TOC): C. Column of Standing Waler (C=A~): Begin Well Evacuation (Tme): D. Purge Factor. Evawauon Rate (gpm): (2in.:0.16. 3in.:0.37, 4in.:0.65. 6in.:1.47. S_in.:2.61) Drawdown Observed (ft): E. One Well Volutne (gaV'LF) (E=CxO): Stop Evacuation (T"lfTIOIReason): F. # Volumes to be Pu'l)ed (3): Restart Tme: G. Tolal Ganons lo be Evacuated (G=FxE): Wei f'.umped D<y: YES I NO INDICATOR PARAMETERS Time: Gallons Purged: 0.0. (mg,\.): l,,'itt I, .'U) !i.l,I. l,.~c; , •• ~•1 ORP(mv): u~ us 1...11o:· -us 1,.\4 Temperature (DC): \'I .' 0 l<t. '11 \"\."r, 1~ .. '\'\ \"\.0 pH: <;;. Cl " ,:; '1M s ·"'' {AS S."-'1 Specific Conductivily(s): ,is l'!i1 l'\1 \~ <{ \)9 Other. '-~-J.•-1-.. 0 .it'f " 'l I !I .I ..... -n., . l Odor. SULFUR / PINE=/ NAPL Observed: TAR I FOAM I End Well ~vacuation (iu-ne): T,mell)ate: Total Volume Purged (gal): Time/Date Restart: .. SAMPLE COLLECTION INFORMATION Sample 10: tr,. \I) A'\ · Split Sample: YES/NO Sample !me/Date: · 1:.'i.\a'L.\I)~ . l\ \l) Duplicate: YESM,\ • Organization: Field Blank: YE5.t1O)" Parameters: '10Cs Porameters: SAME I OTHER COMMENTS . l1 381/d S?:IM 1l£Sl>1:9t,0t, I I I I I I I I I I I I I I I I I I I WESTON W.O. NO. ______ _ Date 91,,l_e,1 lo6 WELL EVACUATION/SAMPLING FORM GENERAL INFORMATION Well No,: "", • , -'2.0 wealher: 11"'-'S, 0\1 u' ........X- Sampling Tt:::!am: 5....-,~~ .. 0 --Sample(s Signature: 'Ii'-I --. . . WELL MEASUREMENTS -.J Protedwe Casing: 1"91ct I Damaged comments: Locked: Yi."I I NO Concrete Base: l'\!3_9 I Damaged Casing Diameter: 2in., 3in., ,f'J]. Gln., Bin. Stickup Height WEU EVACUAmN INFORMATION A. Total Depth (Top of Casing = TOC): Well Evacuation Method (bailer. subme~ible pt.imp) 8. Depth ro Water (OlWJ (TOC): l-'-t ·"'H --C. Column of Sran<fmg wai,,, (C=A-B): Begin Well Esacuation (Time): ··----· ·---~·· o. Purge Factor.· ,!,,·, ... Evacuation Rate (gpm): {2io.:0.16. Jin.:0.37, 1in.:0.6S, 6ITT.:1.47, S_in.:2.61) Drawdown Obsefved (ft): E. One Well Volume (gal/1.F) (E=CxO): Stop Evacuation (TlmeiRBason ): F. /I Volumes lo be Purged (3): Restart Time: G. Total Galiano to be E"'1CU3led (G=FxE): Well Pumpod Ory: YES I NO INDICATOR PARAMETERS Trne: . Gallons Purged: --D.O. (mg,\.): -ORP(m>I): :· ------ Temperature (□C): -----pH: ----------- . Specific ConductM!y(s): other: Odor. SULFUR / PINE TAR/ NAPL Observed: TAR I FOAM I End Well Evacua~on (Tme): Tme/Oate: Total Volume Purged (gal): Time/Date Restart SAMPl-E COLLECTION INFORMATION Sample ID: M,\,J-?.,C Split Sample: YESflq Sample Time/0.at:8: ,'). .... ~ _A lo\1.-< Duplicate: YE51~ 0) Organi:uition: Field Blank: YEs, r,O) . Parameters: Parameters: SAME I OTHER \J()~ COMMENTS 81 3911d I I I I I I I I I I I I I I I I I I I WESTONW.O. NO. ______ _ WELL 9/ACUATlONISAMPLING FORM GENERAL INFORMATION Well No.: \C\W-~\ We<!lther. 'l () • "i. • C -l._ SamplingTeam: ,__ .. , ... --:;>_ •• Sampler's sgnature: t, ~•l- • -WELL MEASUREMENTS Protective Casrng: In@ I DamageiO . Commenb: l.Oeked: ',e; I NO Concrete Base: I~ I Damaged Casing Diameter: 2in., 3in., ~. Sin., Sin. Stickup Height WELL EVACUATION INFORMATION A. Total Depth (Top of Casrng = TOG): Wefl Evacuation Method (bailer, submersible pump) B. Depth to Water (DlW) (TOC): II , 7_' - C. Column of Standing Water (C=A·B): Begrn WeR Ewcuation (Tme): 0. Pt,r~t. ;-.i(;tn,-Evacuation Rate (gpm): (2in.:0.16, 3in.;0.J7, 4in.:0.65, 6in.:1.47, S;in.:2.61) . Drawdown Qbse,ved (H): E. One Well Volume (gaVLF) (E=CXO): stop Evacuation (rune/Reason): F. # Volumes to be Pu,ged (3): Restart Time: G. Total Gallons to be Ev:acustad {G-=FxE): Well Pumped Ory: YES I NO INDICATOR PARAMETERS . Trne: '-- Gallons Pul!Jed: --o.o. (mg/I.): r-----.__ ORP (mv): . •'• ---....... Temperature (DC): ----pH: --....... Specific Conductivily(s): -Other: Odoc SULFUR I PINE TAR/ NAPL Observed: TAR I FOAM I End Well .l'.:vacuation (l'lme): Time/Date: Total Volume Purged (gal): Tme/Oate Restart: SAMPLE COLLECTION INFORMATION Sample ID: ~w ,1.\ Splij Sample: YE~OJ Sample Time/Date; , ......... -et..l .. ,l~s Duplicate: YES/N01 • Or'ganization: F"ld Blank: YESIMOI Parameters: Parameters; SAME I OTHER \JOC..r; COMMENTS . 51 39\/d SclM 97 ct ~ ~· ~1i,c:,_:_j~~~__j.j);~~#~~~~~W'i:~"JG~*~ . . ~"-! ...... I--+-. ' . ,:i,,.c.•+-1---+~ ;-• ,. b - ~ iL )' ... I • a -.,,.-. ~ ~ ,.. . ~- I> I \ ~ ,,. ()> ~- fJ ;,,-. • C>_ ., - f " . ti.· " . if ..... ' :, .~ --~ ~ :;::. ~-F-;. " ~ I" . "' . , .. ~ ,.. ·~ "" ~ \ . '.I l,,. ' -lb . ·•· I> ' • 0 '·, c.o CD 101 .•._.-, : . ' -L . ' , . - ,,i' 1· --::-:-:---t"--~~+4~1-\ffi;~+---·: •· ~--t-.. ,-... ,,. ~~~~:.____.:__..r -~~- '--- . ••,,' !, "';,• . . _;-_ .. , . ·."· I I I I I I I I I I I I I I I I I I I This document was prepared by Weston Solutions, Inc., expressly for EPA. It shall not be disclosed, in whole or in part, without the express written permission of EPA. APPENDIX n February 2005 Semiannual Sampling Event Report Davis Park Road TCE Site Section: Appendices Revision: 0 Date: May 2005 LABORATORY ANALYTICAL REPORTS K:\200641205\Second semiannual 3rd year\Feb0SSemiannualRpt.doc RFW205-2A-ATJK --- -.. ---.. ------ - - - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2141 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: MW01 / Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XT2 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-0ichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene · 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 13:45 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UGIL UGIL UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-Dichlorobenzene 1,2-Dlchlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldenlification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. l-ldentification of analyte is acceptable: reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of anatyte can not be determined from dat8 due to severe quality Ccintrol problems. Data are rejected and considered unusable. Page 1 of 1 - ---- --- -- -- ---- - - - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2141 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Gastonia, NC Id/Station: MW01 / Media: GROUNDWATER Case No: 33811 D No: 2XT2 Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 13:45 Ending: ------------------------------------------------------------------------------- RESULTS UNITS ANALYTE 2.6 J UG/L 3 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. j NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control probf9ftfs. Data are rejected-and consid_ered unusable. Page 1 of 1 ------ -.. -- - ----- - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2142 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW02 / Media: GROUNDWATER D No: 2XT3 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.24 J 0.50 U 0.50 U 0.50 U 0.50 U 2.7 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 U . 0.50 U 0.50 UJ 0.50 UJ 2.0 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromelhane (Freon 11) 1, 1-Dichloroelhene ( 1, 1-Dichloroelhylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroelhane Cyclohexane Carbon Tetrachloride Benzene 1,2-0ichloroethane Trichloroethane (Trichloroethylene} Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Melhyl Bulyl Kelone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.40 J 0.35 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/200514:15 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoelhane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3~Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable: reported value may be biased high. Actual value expected to be fess than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. / NAI-Not Analyzed due to Interferences. j A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -- ----- -.. ------- - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2142 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW02 I Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XT3 Org Contractor: A4 ----·---------------------~----------------------------------- RESULTS UNITS 4.0 J UG/L 7.5 NJ UG/L ANALYTE 4 UNKNOWNS CYCLOTETRASILOXANE; OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Produced by: Appleby, Charlie Requestor: Project Leader: JWENDEL Beginning: 02/01/2005 14:15 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of repllcates. R-Presence or absence of analyte can not be determined from data due·to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - .. -- -.. -- ---- ------VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2143 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW03 / Media: GROUNDWATER D No: 2XT4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 11 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.20 J 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone · Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-0ichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-0ichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-0ichloroethane Trichloroethane (Trichloroethylene) Methy!cyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/200513:15 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable: reported value may be biased low. Actual value expected to be greater than reported value. NA-Nol Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determiried fr6m data due.to severe quality conirol problems. Data a·re rejected and considered unusable. Page 1 of 1 - ---- - ----- --- - - - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2143 FY 2005 Project: MISCELLANEOIIS r.OMPOIINO,S Facility: Davis Park Rd Program: SF Id/Station: MW03 / Media: GROUNDWATER 05-0259 Gastonia, NC Case No: 33811 D No: 2XT4 Org Contractor: A4 Produced by: Appleby, Charlie · Requester: Project Leader: JWENDEL Beginning: 02/01/2005 13:15 Ending: --------------------------------------··--··-··--------------------- RESULTS UNITS 3.7 J UG/L 4.3 NJ UG/L ANALYTE 4 UNKNOWNS CYCLOTETRASILOXANE, OCTAEMTHYL- Data Reported as Identified by CLP Lab. IDs Not Verified U-Analyle not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present: ana!yte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data-due to severe! Quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -------.. - - - --------VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2144 FY 2005 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: MW04 / Media: GROUNDWATER Project 05-0259 Gastonia, NC Case No: 33811 D No: 2XT5 Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 12:25 Ending: ----------------------------------------------------------------------- RESULTS 0.50 U 0.73 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1,1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-·1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone RESULTS 0.50 U 0.50 U 0.50 U 0.33 J 0.45J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U UNITS UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumplive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentificalion of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentificalion of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAl-Not Analyzed due lo Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence of absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 -- - -.. ------- ---- --VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2144 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW04 / Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XT5 Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 12:25 Ending: -------------------------------------------·---------------------------------------------------------- RESULTS UNITS ANALYTE 1.5 J UG/L 2 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified U-Analyte not detected at Or above reporting limit. I J-ldentification of analyte is acceptable: reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-/dentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replica!~. Reported value is "average" of replicates. R-Presence or absence of analytE! can not be det€!rmiri€!d from daia due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ------- ---- -- -- ---VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2145 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW05 I Media: GROUNDWATER D No: 2XT6 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U . 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.67 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofiuoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-0ichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-0ichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02102/2005 14:30 Ending: UNITS UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chiaro benzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dlchlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. j UJ-Analyle not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; ana1yte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. l-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to lnterterences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - --- --- ---- - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2145 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW05 / Media: GROUNDWATER RESULTS UNITS ANALYTE 11 J UG/L 5 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XT6 Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 14:30 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. j NJ-Presumptive evidence analyte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-tdentilication of anatyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from-data due to severe quality control problems. Data are rejected and considered unusable. Page1of1 - -----·---- - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2146 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW07 I Media: GROUNDWATER D No: 2XT8 RESULTS 0.50 U 0.79 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.23 J 0.50 U 0.50 U 5.0 U 0.50 U 0.30 J 0.50 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 UJ 0.50 u. 0.50 U 0.50 UJ 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane· Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 UJ 0.50 UJ 0.50 UJ 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U · Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginn.ing: 02/02/2005 10:45 Ending: UNITS UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chtorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Ana!yte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Anatyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence anafyte is present; anatyte reported as tentaUve identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. l-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - ------ - - -- - ----VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2146 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW07 / Media: GROUNDWATER ANALYTE 3 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XT8 RESULTS UNITS 2.0 J UG/L 10 NJ UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 10:45 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. j NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentificalion of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAl-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or a_bsence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered Unusable. Page 1 of 1 - ----------- ---VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2147 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW08 I Media: GROUNDWATER D No: 2XT9 RESULTS 0.50 U 0.91 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.42 J 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethaae Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-0ichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: · Project Leader: JWENDEL Beginning: 02102/2005 12:05 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value ls an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence anatyle is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-!dentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of afialyle can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -------- ---- - -----VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2147 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW0B / Media: GROUNDWATER ANALYTE 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XT9 RESULTS UNITS 3.4 J UG/L 13 NJ UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 12:05 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of ana1yte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N"Presumptive evidence anatyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. l-ldentification of analyte is acceptable; reported value may be biased tow. Actual value expected to be greater than reported value. NA-Not Analyzed. J NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence _of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -.. - ----·--------VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2148 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Gastonia, NC Program: SF Case No: 33811 Id/Station: MW09 / Media:GROUNDWATER D No: 2XW0 RESULTS 0.50 U 0.88 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.15 J 0.50 U 0.93 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 9.4 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.34 J 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-0ichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trich[oroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichlorop"ropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 10:25 Ending: RESULTS UNITS 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UGIL 0.50 U UG/L 0.50 U UG/L 0.50 UJ UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 UJ UG/L 0.50 U UG/L 0.50 U UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene - U-Analyte not detected at or above reporting limit. I J-tdenlification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumplive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence ana!yte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Act1:1al value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page1of1 --------- -.. ---·-VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2148 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW09 I Media: GROUNDWATER RESULTS UNITS ANALYTE 1.4J UG/L 2 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XWO Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 10:25 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. UJ-Analyte not detected at or above reporting limit. Reporting !imit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentifrcalion of analyte is acceptable: reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. J NAl•Not Analyzed due to Interferences. I A•Analyte analyzed in replicate. Reported value is "average'' of replicates. R-Pr_:sence .or absence <?f analyt~ can not be determined from data due to severe quality control problems .. Data are rejected and considered u·nusable. Page 1 of 1 iiii ----- ------VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2149 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW10 / Media: GROUNDWATER D No: 2XW1 RESULTS 0.50 U 0.78 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 Produced by: Appleby, Charlie Requestor: Project Leader: JWENDEL Beginning: 02/02/2005 14:10 Ending: RESULTS UNITS 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-tdentification of analyte is acceptable; reported value is an estimate. J UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. l NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldenlification of analyte is acceptable: reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable: reported value may b8 biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - -----------·----VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2149 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW10 / Media: GROUNDWATER ANALYTE 5 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW1 RESULTS 8.0 J 27 NJ UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requestor: Project Leader: JWENDEL Beginning: 02/02/2005 14:10 Ending: U-Ana1yte not detected at or above reporting limit. J J-ldentification of analyte is acceptable; reported value is an estimate. UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N•Presumptive evidence analyte is present; analyte reported ·as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as t8ntative identification. Reported value is an estimate. K-ldentification of anatyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is QaverageQ of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data· are rejected and considered unusable. Page 1 of 1 - -·-- -- - - - - -- --- - - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2150 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW11 / Media: GROUNDWATER D No: 2XW2 RESULTS 0.50 U 0.92 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.16 J 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-0ichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichtoroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requestor: Project Leader: JWENDEL Beginning: 02/02/2005 09:00 Ending: UNITS UG/L UG/L UG/L UG/L UGIL UGIL UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDS) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-Dichlorobenzene 1,2-0ichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trich!orobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable: reported value is an estimate. I UJ-Analy\e not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is ·acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unuSable. Page 1 of 1 - ---- - - -- - - ------ - - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2150 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW11 / Media: GROUNDWATER ANALYTE 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW2 RESULTS 10 J 1.7 NJ 39 NJ UNITS UG/L UG/L UG/L CYCLOTRISILOXANE, OCTAMETHYL- CYCLOTETRASILOXANE, OCTAMETHYL- Dala Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 09:00 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of anafyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is ~average~ of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected-and considered unusable. Page 1 of 1 - - -- - - ----- --- ---VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2151 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW12 I Media: GROUNDWATER D No: 2XW3 RESULTS 0.50 U 0.80 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 2.2 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 1.2 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appl.eby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:00 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Brollloform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; ana/yte reported as tentative identification. Reported value is an estimate. K-!dentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification·of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA•Not Analyzed. j NAt-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -- ---- - -- - - ------VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESO, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2151 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW 12 / Media: GROUNDWATER ANALYTE 3 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW3 RESULTS 2.0 J 7.7 NJ UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:00 Ending: U-Ana!yte not detected at or above reporting limit. ! J-ldentification 'of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased !ow. Actual value expected to be greater than reported value. NA-Not Analyzed. j NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence or analyle can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ------ - - -- -- --- -VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2152 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF ld/Station:MW14 / Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XW4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 15:00 Ending: RESULTS UNITS 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane·(DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. l UJ-Ana!yte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive ev!dence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentiflcation of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality_ control problems. Data are rejected and considered unusable. Page 1 of 1 - ----- -- - ------- --VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2152 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW14 I Media: GROUNDWATER ANALYTE Gastonia, NC Case No: 33811 D No: 2XW4 RESULTS 0.97 NJ 23 NJ 1.3 J UNITS UG/L UG/L UG/L CYCLOTRISILOXANE, HEXAMETHYL- CYCLOTETRASILOXANE, OCTAMETHYL- 2 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 0210112005 15:00 Ending: - U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. l-ldenlification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates R-Presence or absence of analyte can not be determined from data due to severe q~ality control problems. Data are rejected and considered unusable. Page 1 of 1 - ----- - ------- - ---VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2153 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: MW 15 / Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XW5 RESULTS 0.50 U 0.92 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 8.9 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.090 J 0.22 J 3.6 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 39 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.30 J 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Triftuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:25 Ending: UNITS UGIL UGIL UG/L UGIL UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDS) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropy!benzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene ------------------------------------------------------------------- U-Analyte not detected at or above reporting limit. I J-ldenlification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldenlification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ---- ------- - -- ---VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2153 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW 15 / Media: GROUNDWATER RESULTS UNITS ANALYTE 3.6 J UG/L 3 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW5 Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:25 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable: reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence anatyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentificalion of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-lden!lfication of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. ! NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - -------- - -- -- ---VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2155 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW16 / Media: GROUNDWATER D No: 2XW7 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UGIL .UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane T etr_achloroethene {T etrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 11 :40 Ending: RES UL TS UNITS 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UGIL 0.50 U UGIL 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L 0.50 U UGIL 0.50 U UG/L 0.50 U UG/L 0.50 U UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDS) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of anafyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. [ NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - -- - - - - - - - - -- - - - - - VOLATILES SAMPLE ANALYSIS. EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2155 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW16 / Media: GROUNDWATER ANALYTE 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW7 RESULTS 3.2 J 9.3 NJ UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 11 :40 Ending: U•Analyte not detected at or above reporting limit. I J-ldentification of anatyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumplive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. J A-Analyte analyzed in replicate. Reported value is "average~ of replicates." R-Presence or absence of analyte ca~ not be determined from da_ta du~ to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 -------- --- - VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESO, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2156 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF ld/Station:MW17 / Media: GROUNDWATER Gastonia, NC Case No: 33811 D No: 2XW8 RESULTS 0.50 U 0.84 U 0.50 U 0.50 U 0.50 U 0.50 U 0.88 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.22 J 0.50 0.50 U 0.50 U 0.50 U 0.50 U 12 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 5.3 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone· Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U . 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 09:55 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochlorornethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dlchlorobenzene 1,2-Dlchlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldenlification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence a"nalyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be.less than the reported value. -L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is ~average" of replicates. R-Presence or absence of analyte" can n6t be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ------------ -VOLATILES SAMPLE ANALYSIS . EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2156 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW17 / Media: GROUNDWATER ANALYTE 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XW8 RESULTS 5.4 J 11 NJ UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 09:55 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present analyte reported as tentative identification. I NJ-Presumptive evidence ana!yte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentiftcation of analyte is acceptable; reported value may be biased high. Actual.value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analytE:_ can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - --------------VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESO, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2157 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW18 / Media: GROUNDWATER D No: 2XW9 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U· 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 1.8 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 3.9 5.0 U UNITS UG/L · UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-0ichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 09:35 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be fess than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality cC!nlrol problems. Data are rejected and considered unusable. Page1of1 - -- --- - - - - --- - - - - - - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2157 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW18 / Media: GROUNDWATER ANALYTE Gastonia, NC Case No: 33811 D No: 2XW9 RESULTS 0.72 NJ 1.4 J UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL- 2 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 09:35 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. l UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable: reported value may be biased high. Actual value expected to be less than the reported value. L-/dentification of analyte is acceptable; reported value may·be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined.from data due to sevei-e quality control probleins. Data are rejected and considered unusable. Page 1 of 1 - -------- --- - --- - - -VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2158 FY 2005 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: MW 19 / Media: GROUNDWATER Project: 05-0259 Gastonia, NC Case No: 33811 D No: 2XX0 Org Contractor: A4 -----~-------------------------------------··- RESULTS 0.50 U 0.84 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.25 J 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.25 J 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L . UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1,1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-0ichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-0ichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/200511:10 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-0ichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. f J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. j NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAJ-Not Analyzed due to lnterierences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data.due.to severe quality control problems. Data are-rejected and considered unusable. Page 1 of 1 - - ---- - - - -- - - -----VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2158 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW19 / Media: GROUNDWATER ANALYTE Gastonia, NC Case No: 33811 D No: 2XXO RESULTS UNITS 0.70 NJ UG/L 21 J UG/L CYCLOTRISILOXANE, HEXAMETHYL- 3 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified Org Contraclor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 11:10 Ending: U-Anatyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. UJ-Ana1yte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentification of-anatyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A•Analyte analyzed in replicate. Reported value is baverage" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are.rejected and considered unusable. Page 1 of 1 - ---- ---- -- - - -- -- - VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2159 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Gastonia, NC Program: SF Case No: 33811 Id/Station: MW20 / Media:GROUNDWATER D No: 2XX1 RESULTS 0.50 U 1.2 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 70 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U · 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.35 J 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Ch!oroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane T etrachloroethene (T etrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 1.1 1.2 0.50 U 0.62 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 12:45 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDS) Ch!orobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Tridilorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identificati~n. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of-analyte can not-be determined-from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - - ----- ------ - VOLATILES SAMPLE ANALYSIS - - - - - EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2159 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW20 / Media: GROUNDWATER ANALYTE 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XX1 RESULTS 15 J 1.7 NJ 19 NJ 0.55 NJ .UNITS UG/L UG/L UG/L UG/L CYCLOTRISILOXANE, HEXAMETHYL- CYCLOTETRASILOXANE, OCTAMETHYL- BENZENE, 1,3,5-TRIMETHYL- Data Reported as Identified by CLP Lab - I Os Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 12:45 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported vatue is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable .. Page 1 of 1 - -- - - -- - - -- - - - -- ---VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2160 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: MW21 / Gastonia, NC Case No: 33811 Media: GROUNDWATER D No: 2XX2 RESULTS 0.50 U 0.86 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.2 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 UR 0.50 U 0.50 UJ 0.50 UJ 0.50 U 5.0 UR UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-0ichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrach!oroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 1.1 1.6 0.50 U 0.55 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0:50 UJ Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 12:00 Ending: UNITS UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Ana!yte not detected at or above reporting limit. I J-!dentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentiflcation of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. j NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be dete~mined_!rom data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -- - - - - - - -- - - - - ----VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2160 FY 2005 Project: MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW21 I Media: GROUNDWATER ANALYTE 05-0259 Gastonia, NC Case No: 33811 D No: 2XX2 RESULTS UNITS 3.2 NJ UG/L 0.98 J UG/L CYCLOTETRASILOXANE, OCTAMETHYL- UNKNOWN Data Reported as Identified by CLP Lab· IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 12:00 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identificatior_.. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Nol Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -- -- - -- - - -- - ------VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2162 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW09D / Media: GROUNDWATER D No: 2XX4 RESULTS 0.50 U 0.85 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.18 J 0.50 U 1.2 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 12 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 UR 0.50 U 0.50 UJ 0.50 UJ 0.51 5.0 UR UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dlchlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene ( 1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate · Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methy[cyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-0ichloropropene 1, 1,2-Trichloroethane T etrachloroethene {T etrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 10:25 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chloroberizene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbe·nzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected al or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data d~e to severe quality ~antral problems. Data are rejected and considered unusable. Page 1 of 1 - -- - -- - --- -- - --- ---VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2162 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: MW09D / Media: GROUNDWATER ANALYTE UNKNOWN Gastonia, NC Case No: 33811 D No: 2XX4 RESULTS 0.51 J 0.51 NJ 1.9 NJ UNITS UG/L UG/L UG/L CYCLOTRISILOXANE, HEXAMETHYL- CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified Org Contraclor: A4 Produced by: Appleby, Charlie RE!questor: Project Leader: JWENDEL Beginning: 02/02/2005 10:25 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable: reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed-in replicate. Reported value is "average" of replicates. R-Presence or absence of analyt~ can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. · Page 1 of 1 - -- - ----- - -- - - - - -- - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA . Production Date: 03/28/2005 07:50 Sample 2139 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: Dl1 / Gastonia, NC Case No: 33811 Media: DI WATER RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.17 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ 5.0 U 0.50 U 0.50 UJ 0.50 UJ 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane D No: 2XTO Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-0ichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichtoroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 13:25 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDS) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4_-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. 1~ - L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data Que to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - -------·-- ---- - - -- - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 · Sample 2139 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: Dl1 / Media: DI WATER RESULTS UNITS ANALYTE 2.0 J UG/L 4 UNKNOWNS Gastonia, NC Case No: 33811 D No: 2XT0 5.1 NJ UG/L CYCLOTETRASILOXANE, OCTAMETHYL Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 13:25 Ending: ····---------------------------------------------------------------- U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - --- ----- -- - -- - --- - VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2140 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: EB1 / Gastonia, NC Case No: 33811 Media: EQUIPMENT RINSE BLANK D No: 2XT1 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.18 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane . Chloromethane Vinyl Chloride Bromomethane Chloro8thane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-0ichloroethane cis-1,2-0ichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 13:30 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropy!benzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-0ichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to.be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined-from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - --- ---- --- ---- - - - VOLATILES SAMPLE ANALYSIS EPA -REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2140 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: EB1 / Media: EQUIPMENT RINSE BLANK ANALYTE Gastonia, NC Case No: 33811 D No: 2XT1 RESULTS 3.6 NJ 1.5 J UNITS UG/L UG/L CYCLOTETRASILOXANE, OCTAMETHYL 2 UNKNOWNS Data Reported as Identified by CLP Lab -IDs Not Verified Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/02/2005 13:30 Ending: U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyle not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. ] NJ-Presumptive evidence analyte is present; analyte r8ported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be.determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ------- ---- ----·--VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2161 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Id/Station: TB1 I Gastonia, NC Case No: 33811 Media: TRIP BLANK -WATER D No: 2XX3 RESULTS 0.50 U 0.94 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 UJ 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.19 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Dichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifluoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethene (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane" Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane Tetrachloroethene (Tetrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 UJ Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02101/2005 07:25 Ending: UNITS UGIL UG/L UG/L UG/L UGIL UG/L UGIL UGIL UG/L UG/L UGIL UGIL UG/L UG/L UGIL ANALYTE Dibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-0ichlorobenzene 1,2-0ichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene ________________________________________ , __________________________________ _ U-Analyte not detected at or above reporting limit. I J-ldenlification of ana!yte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Nol Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data du_e to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - ------ ----- ------VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2161 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Id/Station: TB 1 / Media: TRIP BLANK. WATER Gastonia, NC Case No: 33811 D No: 2XX3 Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 07:25 Ending: ------------------------------------------------------------------------------- RESULTS UNITS 1.1 NJ · UG/L ANALYTE CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab· IDs Not Verified U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte rep_orted as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K•ldentification of anatyte is acceptable; reported value may be biased high. Actual value expected to be-less than the reported value. L-ldentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or aDsence ot·analyte can n6t be determined from data due to severe quality control problems. Data are rejected and considered Unusable. Page 1 of 1 - ------- --- --------VOLATILES SAMPLE ANALYSIS EPA· REGION IV SESD, ATHENS, GA Production Date: 03/28i2005 07:50 Sample 2154 FY 2005 Project: 05-0259 Volatiles Scan Facility: Davis Park Rd Program: SF Gastonia, NC Case No: 33811 Id/Station: MW15D / Media: GROUNDWATER D No: 2XW6 RESULTS a.sou 0.88 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 6.4 U 0.50 U 0.50 U a.so uJ a.sou a.sou 0.50 U 3.4 5.0 U 0.50 U 0.25 J 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 39 0.50 U 0.50 U 0.50 U 0.50 U 5.0 U 0.50 U 0.50 U 0.50 U 0.37 J 5.0 U UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L' UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oichlorodifluoromethane Chloromethane Vinyl Chloride Bromomethane Chloroethane Trichlorofluoromethane (Freon 11) 1, 1-Dichloroethene (1, 1-Dichloroethylene) 1, 1,2-Trichloro-1,2,2-Trifiuoroethane (Freon 113) Acetone Carbon Disulfide Methyl Acetate Methylene Chloride trans-1,2-Dichloroethene Methyl T-Butyl Ether (MTBE) 1, 1-Dichloroethane cis-1,2-Dichloroethene Methyl Ethyl Ketone Bromochloromethane Chloroform 1, 1, 1-Trichloroethane Cyclohexane Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethane (Trichloroethylene) Methylcyclohexane 1,2-Dichloropropane Bromodichloromethane cis-1,3-Dichloropropene Methyl lsobutyl Ketone Toluene trans-1,3-Dichloropropene 1, 1,2-Trichloroethane T etrachloroethene (T etrachloroethylene) Methyl Butyl Ketone Org Contractor: A4 RESULTS 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:25 Ending: UNITS UG/L UG/L UG/L UG/L UG/L UG/L UG/L UG/L UGIL UG/L UG/L UG/L UG/L UG/L UG/L ANALYTE Oibromochloromethane 1,2-Dibromoethane (EDB) Chlorobenzene Ethyl Benzene Total Xylenes Styrene Bromoform lsopropylbenzene 1, 1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene 1,2-Dibromo-3-Chloropropane (DBCP) 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene U-Analyte not detected at or above reporting limit. I J-ldentification of analyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present: analyte reported as tentative identification. I NJ-Presumptive evidence analyte is present; analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-ldenlification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control·problems. Data are rejected and considered unusable. Page 1 of 1 - ---- - ---- --- -- - -VOLATILES SAMPLE ANALYSIS EPA-REGION IV SESD, ATHENS, GA Production Date: 03/28/2005 07:50 Sample 2154 FY 2005 Project: 05-0259 MISCELLANEOUS COMPOUNDS Facility: Davis Park Rd Program: SF Gastonia, NC Id/Station: MW 15D / Media: GROUNDWATER Case No: 33811 D No: 2XW6 Org Contractor: A4 Produced by: Appleby, Charlie Requester: Project Leader: JWENDEL Beginning: 02/01/2005 14:25 Ending: --------------------------------------------·---------- RESULTS 4.3 J 18 NJ UNITS UG/L UG/L ANALYTE 4 UNKNOWNS CYCLOTETRASILOXANE, OCTAMETHYL- Data Reported as Identified by CLP Lab -IDs Not Verified U-Analyte not detected at or above reporting limit. I J-ldentification of anafyte is acceptable; reported value is an estimate. I UJ-Analyte not detected at or above reporting limit. Reporting limit is an estimate. N-Presumptive evidence analyte is present; analyte reported as tentative identification. j NJ-Presumptive evidence analyte is present: analyte reported as tentative identification. Reported value is an estimate. K-ldentification of analyte is acceptable; reported value may be biased high. Actual value expected to be less than the reported value. L-Jdentification of analyte is acceptable; reported value may be biased low. Actual value expected to be greater than reported value. NA-Not Analyzed. I NAI-Not Analyzed due to Interferences. I A-Analyte analyzed in replicate. Reported value is "average" of replicates. R-Presence or absence of analyte can not be determined from data due to severe quality control problems. Data are rejected and considered unusable. Page 1 of 1 - Case Number: Site ID. Affected Samples Volatiles 2139 2140 2141 2142 2143 2144 2145 33811 ORGANIC DATA QUALIFIER REPORT sow Project Number 05-0259 Number -------- Davis Park Rd., Gastonia, NC Flag OLC03.2 Date 03/08/05 Compound or Fraction Used Reason methylene chloride chloroform cis-1,3-dichloropropene, trans-1,3-dichloropropene, 1, 1,2-trichloroethane, 1, 1,2,2-tetrachloroethane, 1,2-dibromo-3-chloropropane methylene chloride chloroform methylene chloride methylene chloride I, I, I-trichloroethane, ethyl benzene, xylene (total) cis-1,3-dichloropropenc, trans-1,3-clichloropropcnc, I, 1,2-trichlorocthane methyl acetate, methylene chloride tetrachloroethene methyl acetate, methylene chloride cis-1,3-dichloropropene, trans-1,3-dichloropropene, I, 1,2-trichloroethane · ethylbenzenc, xylene (total) methyl acetate, methylene chloride J J J J J J J .I .I J J J J J J erratic continuing calibration < quantitation limit lowDMC¾R erratic continuing· calibration < quantitation limit erratic continuing calibration erratic continuing calibration < quantitation limit lowDMC¾R erratic continuing calibration < quantitation limit erratic continuing calibration lowDMC¾R < quantitation limit erratic continuing calibration I I I I I I I I I I I I I I I I I I I I I I I I I I I I. I I I I I I I I I I Case Number: Site ID. Affected Samples 2146 2147 2148 2149 2150 2151 2152 2153 ORGANIC DATA QUALIFIER REPORT sow 33811 Project Number 05-0259 Number OLC03.2 ----- Davis Park Rd., Gastonia, NC Compound or Fraction methyl acetate, methylene chloride methyl tert-butyl ether, chloroform benzene, trichlorocthenc, toluene, tetraehlorocthene, ethylbenzcne, xylene (total), styrene, isopropylbenzene methyl acetate, methylene chloride methyl tert-butyl ether methylene chloride methyl tert-butyl ether, tetrachloroelhene cis-1,3-dichloropropene, trans-1,3-dichloropropene, I, 1,2-trichloroethane, I, 1,2,2-tetrachlorocthane, 1,2-dibromo-3-chloropropanc methyl acetate, methylene chloride methyl acetate, methylene chloride methyl acetate, methylene chloride methyl acetate, methylene chloride methylene chloride methyl tert-butyl ether, I, 1-dichloroethane Date 03/08/05 Flag Used Reason J erratic continuing calibration J J J .I J .r J .r J J J J J < quantitation limit lowDMC%R erratic continuing calibration < quantitation limit erratic continuing calibration < quantitation limit lowDMC%R erratic continuing calibration erratic continuing calibration erratic continuing calibration erratic continuing calibration erratic continuing calibration < quantitation limit I I I I I I I I I I I I I I I I I I I Case Number: Site ID. Affected Samples 2154 2155 2156 2157 2158 2159 2160 2161 ORGANIC DAT A QUALIFIER REPORT sow 33811 Project Number 05-0259 Number OLC03.2 ---,--- Davis Park Rd., Gastonia, NC Compound or Fraction methylene chloride chloroform, tetrachloroethene methyl acetate, methylene chloride methylene chloride chlorororm methyl acetate, methylene chloride methyl acetate, methylene chloride trichloroethene, tetrachloroethene methylene chloride, 1,2,3-trichlorobenzene toluene methylene chloride, 1,2,3-trichlorobenzene cis-1,3-dichloropropene, trans-1,3-dichloropropene, I, 1,2-trichloroethane, I, 1,2,2-tetrachloroethane, 1,2-dibromo-3-chloropropane 4-mcthyl-2-pentanonc, 2-hexanone methylene chloride, 1,2,3-trichlorobenzcne chloroform Date 03/08/05 Flag Used Reason J erratic continuing calibration J < quantitation limit J erratic continuing calibration J erratic continuing calibration J .I ] ] ] ] J J R ] J < quantitation limit erratic continuing calibration erratic continuing calibration < quantitation limit erratic continuing calibration < quantitation limit erratic continuing calibration lowDMC¾R lowDMC¾R (< 10%) erratic continuing calibration < quantitation limit I I I I I I I I I I I I I I I I I I I Case Number: Site ID. Affected Samples 2162 ORGANIC DAT A QUALIFIER REPORT 33811 Project Number 05-0259 ------------ Davis Park Rd., Gastonia, NC Compound or Fraction methylene chloride, 1,2,3-trichlorobenzene methyl tert-butyl ether cis-1,3-dichloropropene, trans-1,3-dichloropropenc, 1, 1,2-trichloroethane 4-methyl-2-pentanone, 2-hexanone sow Number OLC03.2 Date 03/08/05 Flag Used Reason J erratic continuing calibration J < quantitation limit J low DMC¾R R lowDMC¾R (< 10%)