Site Investigation Issues Federal Remediation Technology Roundtable - PowerPoint PPT Presentation

Site Investigation Issues Federal Remediation Technology Roundtable Washington D.C. November 10, 2009 David B. Mickunas US EPA/ERT 1 1

Lines of Evidence: • Groundwater spatial (and vertical profiling, if appropriate) data with modeling • Soil gas spatial concentrations (and vertical profiling, if appropriate), including subslab, with vertical profiling • Ambient, crawlspace, and inside air concentrations and source determinations • Building construction and conditions • Constituent ratios 2 2

Groundwater Spatial (And Vertical Profiling, If Appropriate) Data With Modeling Well Field Site Overburden Groundwater Installation Drilling Operations Oil Bailer Operations Groundwater Sampling Operations Soil Gas Probe Installation 3 3 Drilling Operations Hollow Stem Augers with Geoprobe Membrane Interface Probe with Geoprobe

Soil Gas Spatial Concentrations (And Vertical Profiling, If Appropriate), Including Subslab, With Vertical Profiling Sorbent Tubes Tedlar Bag Sampling Summa Canister with Flow Regulator and 3-Way Valve Analyses Sampling & Slab-Slab Probe Permanent Gas – Gas Chromatograph 4 4 TAGA Mobile Laboratory Volatile Organic Compounds – Gas Chromatograph/Mass Spectrometer

Ambient, Crawlspace, And Inside Air Concentrations And Source Determinations Indoor Air Sampling Ambient Air Sampling Crawlspace Air Sampling BENZENE (HAZ4190) Tetrachloroethene (ARMN020) A B C E G I J K M O Q R T V X ZAABB DD FF GG II JJ 3.5 D F H L N P S U W Y CC EE HH 90 A B C D E G IJ K L M O P Q S T U W Y AA CC DDEE FF 3.0 F H N R V X Z BB HL 80 2.5 Units in PPB Monitoring Lifestyle Sources 70 2.0 Units in ppbv 60 Monitoring Outside Ambient Air Sources 1.5 QL 50 1.0 40 0.5 DL 0.0 30 0 5 10 15 20 25 30 Time In Minutes 20 TOLUENE (HAZ4190) 10 BENZENE (HAZ4291) QL 0 A B C E G I J K M O Q R T V X ZAABB DD FF GG II JJ 8 5.0 DL A B C D EF G I J K M O P Q S T U W Y Z AA BB CC EE FF HH D F H L N P S U W Y CC EE HH 0 5 10 15 20 25 30 H L N R V X DD GG II 7 4.5 Time in minutes 4.0 6 3.5 Units in PPB Units in PPB 5 Tetrachloroethene (ARMN048) 3.0 HL 4 2.5 9 QL 3 2.0 A B C E G I K L M O Q S T U V W Y AA DD FF HH JJ KK MM 8 D F H J N P R X Z BB CC EE GG II LL NN QL 1.5 2 1.0 7 1 DL 0.5 DL 0 6 0.0 Units in ppbv 0 5 10 15 20 25 30 0 5 10 15 20 25 30 Time In Minutes 5 Time In Minutes 4 TOLUENE (HAZ4291) XYLENE (HAZ4190) BENZENE (HAZ6039) 5.0 9 3 A B C E G I J K M O Q R T V X ZAABB DD FF GG II JJ 1000 A B C D EF G I J K M O P Q S T U W Y Z AA BB CC EE FF HH D F H L N P S U W Y CC EE HH 4.5 A B C E G I H K M O L QR N S T U R W Y AA V CC X EE GG II JJ KK LL DD GG MM II 8 QL 900 2 D F H J L N P V X Z BB DD FF HH 4.0 7 800 3.5 1 QL 6 Units in PPB Units in PPB 700 3.0 DL Units in PPB 600 5 0 2.5 500 4 0 5 10 15 20 25 30 35 2.0 Time in minutes 400 3 1.5 DL 300 QL 1.0 2 200 0.5 1 DL 100 0.0 0 DL 0 0 5 10 15 20 25 30 QL HL 0 5 10 15 20 25 30 Time In Minutes Tetrachloroethene (ARMN022) 0 5 10 Time In Minutes 15 20 25 30 Time In Minutes TOLUENE (HAZ6039) XYLENE (HAZ4291) 30 Trichloroethene (HP1026) A B C D E F G H I J K L M N O 10 6 A B C E G I K M O QR S T U W Y AA CC EE GG II JJ KK LL MM 700 A B C D EF G I J K M O P Q S T U W Y Z AA BB CC EE FF HH 9 D F H J L N P V X Z BB DD FF HH H L N R V X DD GG II A B C D E F G H I J K L M N O Q R S T 25 5 P Units in PPB (Thousands) 8 600 7 Units in ppbv 4 Units in PPB 20 6 500 3 5 Units in ppbv 4 15 2 400 3 1 2 300 10 QL 1 DL DL 0 QL 0 5 200 0 5 10 15 20 25 30 5 0 5 10 15 20 25 30 Time In Minutes 5 Time In Minutes 100 XYLENE (HAZ6039) QL 0 2250 DL QL A B C E G I K M O QR S T U W Y AA CC EE GG II JJ KK LL MM 0 0.0 2.5 5.0 7.5 10.0 12.5 15.0 2000 DL D F H J L N P V X Z BB DD FF HH Figure 18a Figure 18a Mobile Monitoring Path Two, ARMN022 Mobile Monitoring Path Two, ARMN022 Time in minutes 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 1750

Building Construction And Conditions Multi-Apartment Building Historical Pre-Revolutionary Era Brick House Split-Level House Ann Arbor, MI Dover, DE Hopewell, NY Historical Revolutionary Era Stone House Single –story House with Crawlspace 2-Story New Construction House Hereford Township, PA San Antonio, TX Hopewell, NY 6 6 Hand-Dug Earthen Tunnel Basement Stone-Walled Basement Rough Poured Cement Floor with Hand-Hewned Posts

Constituent Ratios DICHLOROETHENE (ray010) 35 A B CD E F G H I J K L M N Children’s Gymnasium 30 25 Units in PPB 20 15 10 5 QL 0 DL 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes 1,1,1-TRICHLOROETHANE (ray010) 25 A B CD E F G H I J K L M N 20 Units in PPB 15 10 5 QL 0 DL 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes CHLOROBENZENE (ray010) 0.08 A B CD E F G H I J K L M N 0.07 QL 0.06 Units in PPB 0.05 0.04 0.03 DL 0.02 0.01 0.00 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes TRICHLOROETHENE (ray010) 10 A B CD E F G H I J K L M N 9 8 7 Units in PPB 6 5 4 3 2 1 QL 0 DL 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes DICHLOROETHENE (ray011) Residence Adjacent to the Gymnasium 8 A B C D E F G H I J K M NO P Q 7 6 Units in PPB 5 4 3 2 QL 1 DL 0 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes 1,1,1-TRICHLOROETHANE (ray011) 5.0 4.5 A B C D E F G H I J K M NO P Q 4.0 3.5 Units in PPB 3.0 2.5 2.0 1.5 1.0 QL 0.5 DL 0.0 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes CHLOROBENZENE (ray011) 0.08 A B C D E F G H I J K M NO P Q QL 0.07 0.06 Units in PPB 0.05 0.04 0.03 DL 0.02 0.01 0.00 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes TRICHLOROETHENE (ray011) 2.25 A B C D E F G H I J K M NO P Q 2.00 1.75 1.50 Units in PPB 1.25 1.00 QL 0.75 0.50 7 7 DL 0.25 0.00 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 Time in minutes

TAGA MOBILE LABORATORY 8 8

Trace Atmospheric Gas Analyzer (TAGA) Mobile Laboratory 9 9

Trace Atmospheric Gas Analyzer (TAGA) 10 10

Low Pressure Chemical Ionization (LPCI) Source 11 11

TAGA Operational Process 12 12

Gas Chromatograph with Concentrator for Volatiles 13 13

Gas Chromatograph for Permanent Gases 14 14

Driver and Passenger Seating with Monitor 15 15

INVESTIGATIVE PROCESS TO DETERMINE IF SUBSURFACE GAS IS IMPACTING 16 16

MONITORING AND SAMPLING STRATEGY 1. INITIAL SAMPLING Subslab Location 2. INITIAL TAGA MONITORING Ambient Air Investigation Lifestyle Source Investigation Subsurface Source Investigation 3. SUBSEQUENT SUMMA CANISTER SAMPLING Subslab Location Basement Location First Floor Location Ambient Air Location 17 17

INITIAL SUBSLAB SAMPLING 18 18

Subslab Sampling Probe 19 19

Drilling 20 20

Placement and Cementing of the Probe 21 21

INITIAL TAGA MONITORING 22 22

MONITORING FOR SUBSURFACE INTRUSION SOURCE TCE Site Region 2 23 23

Region 2 - TCE Site 24 24

1,1,1-Trichloroethane (HP1003) 1.75 A B C D E G I K M O Q S T U W Y AA CC FF HH KK MM PP RR TT F H J L N P R V X Z BB DD EE GG II JJ LL NN OO QQ SS 1.50 1.25 Units in ppbv 1.00 0.75 0.50 0.25 QL DL 0.00 0 5 10 15 20 25 30 35 40 Time in minutes Trichloroethene (HP1003) A B C D E G I K M O Q S T U W Y AA CC FF HH KK MM PP RR TT 25 F H J L N P R V X Z BB DD EE GG II JJ LL NN OO QQ SS 20 Units in ppbv 15 10 5 QL 0 DL 0 5 10 15 20 25 30 35 40 Time in minutes Residence Schematics and Compound Concentrations 25 25

26 26

MONITORING FOR SIGNATURE COMPOUNDS TO DETERMINE SUBSURFACE GAS INTRUSION Chlorinated Solvent Site Region 1 27 27

SELECTION OF PARENT/DAUGHTER IONS Compounds Parent/Daughter Masses Vinyl Chloride 62/27 Vinyl Chloride 64/27 Benzene 78/39 Benzene 78/52 Toluene 92/39 Toluene 92/51 1,1-Dichloroethene 96/61 1,1-Dichloroethene 98/61 1,1-Dichloroethene 98/63 1,1,1-Trichloroethane 97/61 1,1,1-Trichloroethane 99/61 1,1,1-Trichloroethane 99/63 Chlorobenzene 112/77 Chlorobenzene 114/77 Trichloroethene 130/95 Trichloroethene 132/95 Trichloroethene 132/97 28 28

Unit 1 Gymnastic Facility For Children 29 29