Document 3eL9vEvQGq1yZyvZpEwb3X903

AR226-2354 DuPont 2004 Multi-Media Sampling Plan WV and OH January 15,2004 rn x Q 0 0 0 w2> .o 0 January 15,2004 DuPont "Phase T Media to be Sampled by DuPont in 2004 in WV and OH Air Private Water Sources Public Water Sources Soil Biota |T) [above listing excludes sampling required by permit] 0 0 0 2 January 15,2004 ^p^ .^8r DuPont Washington Works Area Air Modeling/Sampling Completed - Air dispersion modeling completed and updated for ambient air concentrations (Time periods: y 2002 and 9/02 - 8/03, AR226 and ECA docket) In-progress - Fence line sampling in progress to compa results from ambient air sampling and air dispersion modeling to understand how modeling predictions relat measured ambient air concentrations S -0 o January 15,2004 (0 N) DuPont Air Objective: Compare results from ambient air sampling to air dispersion modeling. Detail: Verification study of ambient air in community locations Locations: Eight representative sample locations for four wind directions and a range in predicted concentrations Number of Samples: 56 (8 locations/7 events) Frequency: 7 events over 6 weeks Duration: 24 hours Analytical Methodology: Validated method conducted by Exygen. Acetone extraction followed by LC/MS/MS with PQL of 0.1 ug/m3. [Docket no. OPPT-2003-0012-0317 to 0320] s o 0 0 0 8 January 15,2004 DuPont { ^y Rationale for Air Sample Locations Representative of all major wind directions Access to property is feasible Locations in both Ohio and West Virginia Representative of a range of predicted concentrations (min - max) S -0 0 0 0 u> ^ January 15,2004 DuPont ^^..^f^ i-:'--.:;%;-:?Si , -^ DuPont Washington Works Area Water Sampling/Monitoring Private Water Sources - WV and OH Public Water Sources - WV and OH Ohio River Washington Works Surface Water and Groundwater Monitoring Ohio EPA proposal specific to Little Hocking Well Field January 15,2004 DuPont 9 DuPont Washington Works Area Private Water Sources fWV & OH) Off-site sampling - completed - WV Multi-Media Consent Order (MMCO); final GIST report - '--250 Samples in a two mile radius (WV and OH) - Includes wells, springs, and cisterns m x 2 0 ^ January 15,2004 DuPont Private Water Sources Objective: Continue to monitor trends in PFOA concentrations Detail: Quarterly or annual sampling of private water sources (i.e., groundwater wells, springs, and cisterns) at locations near the Washington Works facility/Local Landfill (WV and Ohio), Dry Run Landfill, and Letart Landfill. Locations: 10 in WV, 10 in Ohio, 10 near Dry Run, and 2 near Letart Number of Samples: 122 Frequency: Quarterly all areas, exception annual at Letart Duration: 1 Year Analytical Methodology: Current validated LC/MS/MS aqueous method utilized by Exygen (PQL is .05 ug/L). [Docket no. OPPT2003-0012-0040] January 15, 2004 DuPont Rationale for Private Water Source Locations Follows recommendations per WV Multi-Media Consent Order/GIST: - Drinking water wells - Drinking water springs - Non-Drinking water wells - Springs and cisterns - One well and spring used for cattle where prior sampling results were > 5 ug/L 3 2 0 0 g January 15,2004 HDnuPnont w January 15,^ -^ DuPont Washington Works Area Public Water Sources (WV & OH) Off-site & on-site sampling - completed - WV MMCO; final GIST report - 16 public water systems sampled 7 miles upstream to 57 miles downstream (10 systems sampled multiple times) s o 0 0 S January 15,2004 DuPont 9 Public Water Systems Objective: Continue to monitor trend in PFOA concentrations in pub water systems near Washington Works Detail: - Quarterly or annual sampling of public water systems near site, includin Little Hocking WA, Lubeck PSD, General Electric, DuPont, Blennerhas Island State Park, Mason County PSD, Racine Lock and Dam PSD, and Tuppers Plains-Chester PSD - Install four monitoring wells at Little Hocking WA to monitor shallow portion of saturated zone Locations: 8 (includes the four new monitoring wells at LHWA) Number of Samples: 121 Frequency: First four will be quarterly, second four annual; Saturat zone to be sampled quarterly Duration: 2 Years Analytical Methodology: Current validated LC/MS/MS aqueous method utilized by Exygen (PQL is .05 ug/1). [Docket no. OPPT-200 0012-0040] S January 15,2004 DuPont 5 ) | X : )) [EXP000205 in DuPont Washington Works Area Ohio River Water Sampling River Sampling - completed - WV MMCO, GIST final report Samples taken 28 miles upstream to 46 miles downstream 12 transects, various depths and cross river loca 49 samples taken Additional sampling - to continue via site and land outfall monitoring permit requirements S -0 0 0 0 M January 15,2004 DuPont DuPont Washington Works Surface water and Groundwater Monitorin Groundwater and surface water sampling - completed - WV MMCO; final GIST report 19 groundwater wells and 6 outfalls sampled Over 250 samples taken Groundwater and surface water monitoring ' additional work - Outfall sampling - monthly, quarterly, and semi-annually depen on the outfall (permit) m - Process treatment outlet monitoring - weekly (permit) x V 0 o e 0 ^1 January 15,2004 DuPont V9 DuPont Soil Sampling/Modeling Completed work Adsorption/desorption testing - APME Report, ECA Docket Over 200 on-site samples (ECA docketWashington Works RCRA Facility Investigation) 2 off-site samples - (Sampling Investigation Results Litt Hocking Water Association Well Field, April 2003) S "0 o 0 0 Ni January 15,2004 DuPont Soil Objective: Determine range ofPFOA concentration in off-site soil. Detail: Surface soil sampling will be conducted at locations in WV and OH. Sampling locations consistent with groundwater and ambien air monitoring locations. Events will be conducted after wet and dry weather conditions. Locations: 10 in WV and 10 in OH Number of Samples: 40 Frequency: 2 Events (dry and wet) Analytical Methodology: Current validated LC7MS/MS method utilized by Severn Trent-Denver (PQL of 0.19 ug/kg). [Docket no. OPPT-2003-0012-xxxx] S 0 0 0 January 15,2004 DuPont Rationale for Soil Sample Locations Representative of all major wind direction Access to property is feasible Locations in both Ohio and West Virginia Representative of a range of predicted concentrations (min - max) 55 S I January 15, 2004 DuPont  H , ------ ji k pl i "AEE ( j arlf tPhhi "lii Ne, Til H he y LEAT i 2. ag FF i CE Fis H el hy a" i oN fabs h b By 4 [ "TMH ! oh wh pre fis) BA 1Hif EM yh WT k NL % F A A HyN )x 4 A . t, 1 > v Wf | L x 5 ll Exconnztt Biota - WV Fish Study Fish from the Ohio River at Belleville Da 4 species, 16 samples All results were Non-Detect January 15,2004 DuPont Biota Objective: Determine ifPFOA is present in grass, and determine if a deposited PFOA is present on grass surface. Detail: Sample grass/vegetative layer at each soil sampling location. Will include grass, grass litter layer, and root zone (with soil removed A "washed" sample will likely be conducted at some locations during "dry" event (prior to sample homogenization) Locations: 10 in WV and 10 in Ohio Number of Samples: 40 (plus some washed samples) Frequency: 2 events (dry and wet) during soil sampling Analytical Methodology: A validated analytical method does not currently exist (in progress, but will be in-place before work is conducted). 0 0 0 M " January 15,2004 DuPont Q ee - H . ilul i BSlLoo wa Th foNh by i oT & F oH ANY, 3 Gs %. { Hof + New Nkit i Vig i8 | i i) Ng Ev WE Ela b Co y A LN nN WJ WTR Whe y S FR i 2 >E ! pLy " " k JF L A "lvlk ) } i ll expos Evaluation of Off-site Soil/Biota Results The 40 total soil and 40 total biota sample results will receive basic summary statistical analysis to determine: - minimum and maximum concentration - median - mean (if all results > than ND) These results will form a baseline off-site soil/biota data set. If warranted, this data set will then be utilized to formulate objectives and scope of work for additional o site soil sampling. S -0 0 0 s ^ January 15,2004 DuPont DuPont Summary Proposed "Phase T Monitoring Activitie Air Air dispersion model verification with off-site sampling Water Install four wells to monitor the shallow portion of the saturated z in the Little Hocking well field Private water monitoring at 32 locations Public water system monitoring at eight locations Soil Conduct two surface soil sampling events at twenty locations (10 Ohio; 10 in Wva); one after dry period and one after rain event Biota Sample grass in the same location as the surface soil sampling 0 0 0 ls> 5; January 15,2004 puPont Peer Consultation Process Concept drawn from the Voluntary Children's Chemical Evaluation Program Guidelines Advisory Group Third party technical experts Independent/No conflict of interest Will review results of Phase 1 and Phase 2 monitoring activities and the industry proposal for Phase 3 activities and provide feedback on proposal(s) January 15,2004 DuPont ^ Statistical Analysis of Off-Site Private Water Sampling in WV and Ohio S<-,t,,at. e oSource Radius (, mi.l,es). Sample S,,i.zve Number (%) ' ' Q^ uantified Median .(,(^g//,1. ) pS.igm.f,,i Ohio Spring/Cistern Otol 21 lto2 4 WeU 0 to 1 48 1 to 2 59 21(100) 4(100) 43(90) 40(68) 4.97 0.48 ^<O 0.92 0.21 P^- West Virginia Spring/Cistern Well 5 -0 0 0 0 Ni 00 January 15,2004 Otol 10 1 to 2 13 0 to 1 38 1 to 2 52 DuPont 10(100) 12(92) 38(100) 39(75) 2.06 0.90 1.73 0.36 p p<0