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7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX • WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15 AUGUST 2013 Work Plan Addendum Indoor Air and Sub-Slab Vapor Sampling Round 15 August 2013 Lockheed Martin Middle River Complex 2323 Eastern Boulevard Middle River, Maryland Prepared for: Lockheed Martin Corporation Prepared by: Tetra Tech, Inc. September 2013 Michael Martin, P.G. Program Manager Eric M. Samuels Project Manager

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  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15 AUGUST 2013

    Work Plan AddendumIndoor Air and Sub-Slab Vapor Sampling

    Round 15August 2013

    Lockheed Martin Middle River Complex2323 Eastern BoulevardMiddle River, Maryland

    Prepared for:

    Lockheed Martin Corporation

    Prepared by:

    Tetra Tech, Inc.

    September 2013

    Michael Martin, P.G.Program Manager

    Eric M. SamuelsProject Manager

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE i

    TABLE OF CONTENTS

    Section Page

    ACRONYMS ...................................................................................................................... iii

    1 INTRODUCTION AND SCOPE.............................................................................1-1

    1.1 Proposed Sub-Slab-Vapor Monitoring-Point Locations ...........................................1-2

    1.2 Proposed IAQ Sampling Locations...........................................................................1-2

    1.3 IAQ and Sub-Slab-Vapor Sampling..........................................................................1-3

    2 REFERENCES ......................................................................................................2-1

    LIST OF FIGURES

    Section Page

    Figure 1-1 Indoor Air and Sub-Slab Vapor Monitoring Locations for Building A,Round 15, August 2013.............................................................................................1-5

    Figure 1-2 Indoor Air and Sub-Slab Vapor Monitoring Locations for Building B,Round 15, August 2013.............................................................................................1-6

    Figure 1-3 Indoor Air and Sub-Slab Vapor Monitoring Locations for Building C,Round 15, August 2013.............................................................................................1-7

    Figure 1-4 August 2013 Indoor Air and Sub-Slab-Vapor Sampling Locations forBuildings A, B, and C................................................................................................1-8

    Figure 1-5 IAQ Background Sampling Locations, Round 15, August 2013 .............................1-9

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE ii

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  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE iii

    ACRONYMS

    COC contaminant(s) of concern

    IA indoor air

    IAQ indoor air quality

    Lockheed Martin Lockheed Martin Corporation

    MPL mechanical prototype lab

    MRC Middle River Complex

    MST Mission Systems and Training

    SV sub-slab vapor

    VLS vertical-launch system

    VMP vapor monitoring point

    VOC volatile organic compound

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE iv

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  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE 1-1

    Section 1

    Introduction and Scope

    This technical memorandum proposes field activities to support the August 2013 indoor air-quality

    (IAQ) and sub-slab-vapor (SV) sampling round at the Lockheed Martin Corporation (Lockheed

    Martin) Middle River Complex (MRC) in Middle River, Maryland. This memorandum is an

    addendum to the Indoor-Air Quality Assessment Work Plan for Buildings A, B, C, and

    Vertical-Launch System (VLS), Lockheed Martin Middle River Complex (Tetra Tech, 2006). The

    proposed August 2013 sampling of indoor air (IA) and SV will be the fifteenth sampling round for

    possible SV intrusion of volatile organic compounds (VOCs) from contaminated soil, groundwater,

    and soil gas beneath the MRC into interior spaces of the facility.

    Figures 1-1, 1-2, and 1-3 show the MRC monitoring locations that have been sampled to date in

    Buildings A, B, and C, respectively, along with the proposed August 2013 sampling locations,

    shown circled on the figures. Figure 1-4 provides a facility-wide view of the locations sampled to

    date and those proposed for sampling in August 2013. Figure 1-5 illustrates the background

    locations to be sampled.

    The scope of work associated with the proposed field investigation and addressed by this

    memorandum includes identifying proposed SV sampling locations; identifying proposed IAQ

    sampling locations; and collecting and analyzing IAQ and SV samples. Sampling is proposed in

    areas previously identified as having higher SV and/or indoor air concentrations

    (i.e., concentrations above screening values). The proposed sampling locations were chosen to

    evaluate the effectiveness of the operating sub-slab-depressurization systems at the facility,

    including the recent expansion of the Building C system.

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE 1-2

    1.1 PROPOSED SUB-SLAB-VAPOR MONITORING-POINTLOCATIONS

    No new vapor-monitoring points (VMPs) will be installed for the August 2013 sampling round.

    Results from Round 14 (February 2013) indicate that the VMP locations proposed for Round 15

    are appropriate, except for the following changes:

    Two additional IA samples (128-C, 144-C) will be collected in the Mission Systems andTraining (MST) mechanical prototype lab (MPL) machine shop on the northeastern sideof the Building C basement.

    A visual inspection of the MST MPL machine Shop will be performed during the pre-sampling inspection of VMPs. The objective of this inspection will be to identify anycracks or other penetrations of the building envelope that might facilitate sub-slab vaporintrusion at this location.

    Two VMPs in the western part of Building B (033-B and 101-B) will be sampled in thisround to evaluate contamination east and northeast of 121-B and 136-A. Elevated levelsof TCE were identified at 136-A in the eastern part of Building A in February 2013(Round 14).

    As stated earlier, VMPs sampled in Round 15 will be the same as those sampled during the

    previous round (Round 14); the rationale for using the same locations includes the following:

    VMPs installed during Round 14 have only been sampled once

    contaminants of concern (COC), including naphthalene and chlorinated compounds, weredetected at multiple locations that were sampled during Round 14

    Thirty-six VMPs will be sampled during Round 15; proposed SV sampling locations in each

    building are shown in Figures 1-1 through 1-3. Figure 1-4 provides an overview of the same

    information showing all buildings.

    1.2 PROPOSED IAQ SAMPLING LOCATIONS

    Except for the samples proposed in the MST MPL machine shop, all IAQ sampling locations will

    be co-located with proposed VMP sampling locations to evaluate possible relationships between

    sub-slab and IAQ results. IAQ sampling locations are also used to further evaluate areas where

    elevated results and chemical markers of vapor intrusion (e.g., cis-1,2-dichloroethene and

    trans-1,2-dichloroethene) have been previously reported. Proposed IAQ monitoring locations are

    shown in Figures 1-1, 1-2, 1-3, and 1-4. As previously stated, sampling locations are the same as

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE 1-3

    those sampled during the previous round (Round 14) with a few exceptions (see Section 1.1).

    IAQ samples proposed for the MST MPL machine shop are being collected because workers

    have expressed concern regarding IAQ in that area.

    Thirty-eight IAQ samples are proposed for analysis: 36 samples will be collected at the VMP

    locations to be sampled for SV in Round 15, plus two additional IA samples in the MST MPL

    machine shop. Outdoor ambient air samples will also be collected from four background

    locations. Background samples will be collected from locations used in previous sampling

    rounds. Figure 1-5 shows the proposed background sampling locations.

    1.3 IAQ AND SUB-SLAB VAPOR SAMPLING

    All proposed SV sampling locations (i.e., VMPs) will be inspected within one month before the

    proposed sampling round. The objective of this inspection will be to identify any VMPs that are

    obstructed or need repair. These locations will be identified on site plans and in tabular format in

    a summary memorandum. IAQ sampling will be performed in accordance with the IAQ

    assessment work plan (Tetra Tech, 2006). During VMP inspection, a visual inspection of the

    MST MPL machine shop will also be performed to identify any penetrations in the building

    envelope (e.g., floor cracks, pipes and utility chases) that might enhance possible SV intrusion.

    Observations will be recorded and used to identify the final placement of the two IA samples

    proposed for this area.

    IAQ samples will be collected over approximately eight hours using pre-conditioned Summa®

    canisters; air sampling will be performed in accordance with United States Environmental

    Protection Agency Toxic Organic Method 15 (EPA TO-15). Up to 38 IAQ samples plus four

    duplicate samples will be collected during Round 15. Background samples from four previously

    established locations will also be collected (Figure 1-5); no duplicate background samples will

    be collected.

    SV samples will be collected at the same time IAQ samples are collected. Up to 36 SV samples

    and four duplicate samples will be collected from MRC Buildings A, B, and C during Round 15.

    Each sub-slab vapor sample will be collected over a one-hour period. Sub-slab sampling will be

    performed in accordance with the Phase II Investigation Work Plan Block I (Tetra Tech, 2008).

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 15, AUGUST 2013 PAGE 1-4

    Co-located IAQ and SV sampling locations will share the same numerical identifier (based on

    when the location was first sampled), a building identifier (i.e., A, B, C, or Z for outlying

    buildings), the type of sample (IA for indoor air, SV for sub-slab vapor), and the sampling round

    (i.e., R15 for Round 15). For example, a sub-slab sample collected during Round 15 at the ninth

    sub-slab sampling location installed in the Building C Basement (during the 2006 site

    characterization study) would be 009-C-SV-R15. The co-located indoor air sample for this SV

    location would be 009-C-IA-R15. Final sampling locations will be determined based on

    conditions at the time of sampling.

    After sampling is complete, each canister will be closed and sent to an off-site laboratory under

    proper chain of custody procedures. Each sample will be submitted for analysis by USEPA

    Method TO-15. The current analytical parameter list used for indoor-air, sub-slab vapor, and

    background monitoring was agreed upon by the team in late 2011, and includes the following:

    benzene naphthalene

    carbon tetrachloride tetrachloroethene (PCE)

    chlorodifluoromethane (Freon 22) toluene

    chloroform 1,2,4-trichlorobenzene

    dichlorodifluoromethane 1,1,1-trichloroethane (1,1,1-TCA)

    1,1-dichloroethane (1,1-DCA) 1,2,3-trimethylbenzene (1,2,3-TMB)

    1,2-dichloroethane (1,2-DCA) 1,2,4-trimethylbenzene (1,2,4-TMB)

    1,1-dichloroethene (1,1-DCE) 1,3,5-trimethylbenzene (1,3,5-TMB)

    cis-1,2-dichloroethene (cis-1,2-DCE) trichloroethene (TCE)

    trans-1,2-dichloroethene (trans-1,2-DCE) 1,1,2-trichloroethane (1,1,2-TCA)

    ethylbenzene vinyl chloride (VC)

    methyl-tertiary-butyl ether (MTBE) xylenes (total)

    methylene chloride

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    Figure 1-1

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    Proposed Indoor Air and Sub-Slab Vapor Monitoring Locations for Building B Round 15 August 2013

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    DATE MODIFIED: CREATED BY:7/17/13 MP

    Tetra Tech, Inc.

    Lockheed Martin Middle River ComplexMiddle River, Maryland

    Figure 1-3

    Proposed Indoor Air and Sub-Slab Vapor Monitoring Locations for Building C Round 15 August 2013

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    Buildings A, B, and C

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    SSD Radius of Influence

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    Map Document: (K:\GProject\middle_river\Maps\Block I bldg ABC showing B C basement_round 15.mxd)7/19/2013 -- 11:04:41 AM

    DATE MODIFIED: CREATED BY:7/19/13 MP

    Tetra Tech, Inc.

    Lockheed Martin Middle River ComplexMiddle River, Maryland

    Figure 1-4

    August 2013 Indoor Air andSub-Slab Vapor Sample Locations for

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    10000 ug/m3

    1000 ug/m3

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    10 ug/m3

    0.1 ug/m3

    February 2013 Sub-Slab Vapor TCE Concentration

  • A

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    IAQ BACKGROUND SAMPLING LOCATIONSROUND 15 AUGUST 2013

    DATE MODIFIED: CREATED BY:7/17/13 MP

    Tetra Tech, Inc.

    ±

    Lockheed Martin Middle River ComplexMiddle River, Maryland

    LEGEND

    A BACKGROUND SAMPLING LOCATION

    WATER

    0 100 200 300 400Feet

    Map Document: (K:\GProject\middle_river\Maps\Middle River BCK_Locs_20June11.mxd)1/12/2012 -- 3:54:22 PM

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 13, AUGUST 2013 PAGE 2-1

    Section 2

    References1. Tetra Tech, Inc., 2006. Indoor Air Quality Assessment Work Plan for Buildings A, B, C,

    and VLS, Lockheed Martin Middle River Complex. November.

    2. Tetra Tech, Inc., 2008. Phase II Investigation Work Plan, Block I, Lockheed Martin MiddleRiver Complex. August.

  • 7976 TETRA TECH • LOCKHEED MARTIN MIDDLE RIVER COMPLEX •WORK PLAN ADDENDUM: INDOOR AIR AND SUB-SLAB-VAPOR SAMPLING, ROUND 13, AUGUST 2013 PAGE 2-2

    This page intentionally left blank

    Work Plan Addendum Indoor Air and Sub-Slab Vapor Sampling, Round 15, August 2013 Lockheed Martin Middle River ComplexTABLE OF CONTENTSLIST OF FIGURESACRONYMS

    Section 1 Introduction and Scope1.1PROPOSED SUBSLABVAPOR MONITORINGPOINT LOCATIONS1.2PROPOSED IAQ SAMPLING LOCATIONS1.3IAQ AND SUBSLAB VAPOR SAMPLING

    Section 2 References