Page 1 of 64. Overview Materials

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3 Page 1 of 64 Overview Materials

4 SSFL Location Of Nitrogen Depot Page 2 of 64

5 Page 3 of 64 Location Of Nitrogen Depot

6 Nitrogen Depot Area Images Page 4 of 64

7 ESADA Removal Details Page 5 of 64

8 Page 6 of 64 Document Review and Operations Certification

9 Santa Susana Field Laboratory The Boeing Company Nitrogen Depot, Area III Document Review and Operations Certification I certify that, to the best of my knowledge and belief, no radiological research and development activities were conducted in the Nitrogen Depot. No radiological incidents have been reported at the nitrogen depot involving contamination from nuclear or radiological operations. No radioactive materials use authorizations were ever requested or approved for the Nitrogen Depot. A common practice at most of the industrial facilities of SSFL during its operational history was to conduct industrial field radiography of tanks, vessels, piping, etc., using sealed, shielded cobalt- 60 or iridium-192 radiography sources. Although there is no direct evidence that field radiography was ever conducted at the Nitrogen Depot, these operations were conducted, and the sealed sources managed, in accordance with stringent operational procedures and state licensing requirements. During use, the sources were routinely inventoried and leak tested to verify that the sources remained intact. When no longer required, sources were disposed of as low-level radioactive waste or returned to the original vendor for re-use. In recent years, field radiography has been conducted only by third party contractors with contractor-owned sources. There are no remaining radiography sources at SSFL. Phil Rutherford Manager, Health, Safety & Radiation Services Nitrogen_Depot_Ops_Certification March 29, 2013 Page 7 of 64

10 Radiological Release Survey and Waste Certification Page 8 of 64

11 Santa Susana Field Laboratory The Boeing Company Introduction Nitrogen Depot, Area III Radiological Release Survey and Waste Certification This data package provides the pre-demolition radiation survey results of the Nitrogen Depot in Area III. This survey complies with Standard Operating Procedures: Building Demolition Debris Characterization and Management 1 and Boeing procedure RS Methodology Instrument measurements (1 minute static counts) were made for alpha and beta/gamma total surface activity (Ludlum 2224 plus Ludlum plastic scintillator probe) and gamma exposure rate (Bicron microrem meter). Wipes were taken for removable alpha/beta activity and counted in a low-background Tennelec laboratory alpha/beta counter. Instrument minimum detectable activities (MDA) for total activity measurements were 364 to 529 dpm/100 cm 2 alpha and 770 to 991 dpm/100 cm 2 beta (Ludlum probe). Removable activity MDAs for the Tennelec were 9 to 14 dpm/100 cm 2 alpha and 23 to 24 dpm/100 cm 2 beta. These MDAs meet the regulatory limits for surface activity shown in Appendix 1. The Bicron MDA is ~4 µr/hr. Results 512 surface activity measurements and 128 exposure measurements were taken of the Nitrogen Depot lots, drives, pads and structures. See Appendix 2 for results of all measurements. All of instrument surface activity measurements and wipe tests were non-detect (i.e. less than the MDA) and are therefore indistinguishable from background. The dose from any resulting post-demolition solid debris would therefore be zero mrem per year. If it were conservatively assumed that all the debris was actually contaminated at the MDA levels, then the effective dose would be much less than 1 mrem per year 3,4. 1 Standard Operating Procedures: Building Demolition Debris Characterization and Management. Appendix A. Radiation Screening Procedures for Non-radiological Buildings, Equipment and Debris. Letter from A. Lenox (Boeing) to R. Brausch (DTSC), February 24, Boeing, Methods and Procedures for Radiological Monitoring. RS-00012, Revision B, August 6, ANSI N Surface and Volume Radioactivity Standards for Clearance. American National Standards Institute/Health Physics Society, The most limiting beta/gamma screening value is 6,000 dpm/100 cm 2 corresponding to a dose of 1 mrem per year. The most limiting alpha screening value is 600 dpm/100 cm 2 corresponding to a dose of 1 mrem per year. 4 NUREG Radiological Assessments for Clearance of Materials from Nuclear Facilities. Nuclear Regulatory Commission, June The most restrictive beta/gamma dose conversion from Table 2.1 is 0.16 µrem/y per dpm/100 cm 2. This corresponds to 0.8 mrem/y per 5,000 dpm/100 cm 2. Nitrogen_Depot_Waste_Certification_Rev_0.docx February 18, 2013 Page 9 of 64

12 Santa Susana Field Laboratory The Boeing Company The majority (511 of 512 or 99.8%) of instrument surface activity measurements and wipe tests meet the most restrictive regulatory surface activity limits for release/clearance of equipment and material for unrestricted use from former radiological facilities 5,6,7. All the surface activity measurements meet the general surface activity limits for release/clearance of equipment and material for unrestricted use from former radiological facilities 5,6,7. See Appendix 1 for regulatory limits for surface activity. Conclusions The Nitrogen Depot is not a former radiological facility. Based on measurements taken, the post-demolition debris is radiologically acceptable for off-site disposal and/or recycling. There are no radiological controls or restrictions imposed on future disposition or use of this debris. Waste from this demolition project meets the requirements of disposal facility permits 8,9 and complies with the California Health & Safety Code 10. The Governor s Executive Order D (September 2002) prohibits the disposal of decommissioned materials to Class 3 landfills or unclassified management units. The subject debris is not 5 (a) U.S. Nuclear Regulatory Commission Regulatory Guide Termination of Operating Licenses for Nuclear Reactors. June (b) U.S. NRC "Guidelines for Decontamination of Facilities and Equipment Prior to Release to Unrestricted Use or Termination of Licenses for Byproduct, Source, or Special Nuclear Material," August (a) U.S. Department of Energy Order 458.1, Radiation Protection of the Public and Environment Attachment 1, Section (f)1b, June 6, (b) U.S. Department of Energy Memorandum from Sally Robison to Roger Liddle, "Site-wide Limits for Release of Facilities without Radiological Restriction", September 17, (c) U.S. Department of Energy Guide DOE G XX. Control and Release of Property with Residual Radioactive Material. April 4, (a) California Department of Public Health. DECON-1. Guidelines for Decontamination of Facilities and Equipment Prior to Release for Unrestricted Use. (b) California Department of Public Health Letter from Gerard Wong to Majelle Lee, "Authorized Site-wide Radiological Guidelines for Release for Unrestricted Use", August 9, (c) California Department of Public Health, IPM Clearance Inspection and Survey. December 1, This waste is exempt from regulation and licensing or is expressly authorized for disposal under the Radiation Control Law (Division 104, Part 9, Chapter 8 of the California Health & Safety Code). 9 This waste is not prohibited from disposal by any government agency with jurisdictional authority over this waste. 10 Division 104, Part 9, Chapter 5, Article 1, Section , No person shall bury, throw away, or in any manner dispose of radioactive wastes within the state except in a manner and at locations as will result in no significant radioactive contamination of the environment. For the purposes of this requirement, significant is defined in Section as amounts of radioactive materials that are likely to expose persons to ionizing radiation greater than the guide levels published by the Federal Radiation Council (FRC). The FRC no longer exists, but the applicable guide level last published by the FRC was 500 mrem per year to a member of the public. Because the regulatory dose limit to members of the public has since been lowered to 100 mrem per year, CDPH/RHB conservatively utilizes the lower dose for purposes of defining significant radioactive contamination in this Article of the California Health and Safety Code. Nitrogen_Depot_Waste_Certification_Rev_0.docx February 18, 2013 Page 10 of 64

13 Santa Susana Field Laboratory The Boeing Company decommissioned material, and has not originated from a radiological facility. The survey in this certification has therefore been conducted as a best management practice, which also complies with the requirements of D Verification surveys and/or approval by the California Department of Public Health (CDPH) Radiologic Health Branch (RHB) are not required for the off-site disposal of decommissioned material or of the subject material 11. Phil Rutherford Manager, Health, Safety & Radiation Services Environment, Health & Safety 11 The California Department of Public Health (CDPH) Radiologic Health Branch (RHB) has stated in a November 9, to Phil Rutherford (Boeing) The Governor's Executive Order D-62-02, does not specifically require the Department of Health Services (now the Department of Public Health) to perform verification sampling of decommissioned material or to provide approval for disposal of specific decommissioned material shipped offsite (e.g., to Class I or II landfills). The California DPH has not imposed a requirement that Boeing or the Department of Energy (DOE) seek DPH verification sampling or approval of all decommissioned material destined for Class I or II landfills in compliance with the Governor's Executive Order. Nitrogen_Depot_Waste_Certification_Rev_0.docx February 18, 2013 Page 11 of 64

14 Santa Susana Field Laboratory The Boeing Company Appendix 1 Surface Activity Limits Nitrogen_Depot_Waste_Certification_Rev_0.docx February 18, 2013 Page 12 of 64

15 Santa Susana Field Laboratory The Boeing Company Surface Activity Limits (dpm/100 cm 2 ) Alpha Beta Total Total Removable 5 Removable 5 Average 4 Maximum 5 Average 4 Maximum 5 Isotope-specific Regulatory Limits 1,2,3 Mixed beta/gamma emitters (Cs-137, Sr-90, Co-60, etc.) ,000 15,000 1,000 Uranium, U-235, U-238 and decay products 5,000 15,000 1,000 5,000 15,000 1,000 Thorium, Th-232 1,000 3, Sr-90 (separated) 1,000 3, Transuranics, plutonium, radium General Regulatory Limits 5,000 15,000 1,000 5,000 15,000 1,000 Most Restrictive Regulatory Limit ,000 3, Preferred Boeing Limit , Typical Minimum Detectable Activities <20 ~1,000 <30 [1] (a) U.S. Nuclear Regulatory Commission Regulatory Guide Termination of Operating Licenses for Nuclear Reactors. June (b) U.S. NRC "Guidelines for Decontamination of Facilities and Equipment Prior to Release to Unrestricted Use or Termination of Licenses for Byproduct, Source, or Special Nuclear Material," August [2] (a) U.S. Department of Energy Order 458.1, Radiation Protection of the Public and Environment Attachment 1, Section (f)1b, June 6, (b) U.S. Department of Energy Memorandum from Sally Robison to Roger Liddle, "Sitewide Limits for Release of Facilities without Radiological Restriction", September 17, (c) U.S. Department of Energy Guide DOE G XX. Control and Release of Property with Residual Radioactive Material. April 4, [3] (a) California Department of Public Health. DECON-1. Guidelines for Decontamination of Facilities and Equipment Prior to Release for Unrestricted Use. (b) California Department of Public Health Letter from Gerard Wong to Majelle Lee, "Authorized Sitewide Radiological Guidelines for Release for Unrestricted Use", August 9, (c) California Department of Public Health, IPM Clearance Inspection and Survey. December 1, [4] Averaged over 1 m 2. [5] Maximum measured over 100 cm 2. Surface Activity Limits xlsx September 14, 2012 Page 13 of 64

16 Santa Susana Field Laboratory The Boeing Company Appendix 2 Field Survey Results Nitrogen_Depot_Waste_Certification_Rev_0.docx February 18, 2013 Page 14 of 64

17 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: lots & drives Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATION/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 1 2/13/2013 2/14/2013 pipe < 20 < /13/2013 2/14/2013 foundation block < 20 < /13/2013 2/14/2013 foundation block < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 guard rail < 20 < /13/2013 2/14/2013 post < 20 < /13/2013 2/14/2013 drain collection box < 20 < COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 14 dpm/100 cm 2 α and 23 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 12 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.81% 38.74% 18.2% 18.1% NA Gamma () SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/14/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 1 of 13 FORM 732-A REV Page 15 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx 732-A

18 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: lots & drives Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATON/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 21 2/13/2013 2/14/2013 drain < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 runoff-stained drive < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 < 20 < /13/2013 2/14/2013 gutter < 20 < /13/2013 2/14/2013 curb < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 14 dpm/100 cm 2 α and 23 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 12 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.81% 38.74% 18.2% 18.1% NA Gamma () SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/14/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 2 of 13 FORM 732-A REV Page 16 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx 732-A

19 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: lots & drives Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATON/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 41 2/13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 14 dpm/100 cm 2 α and 23 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 12 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.81% 38.74% 18.2% 18.1% NA Gamma () SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/14/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 3 of 13 FORM 732-A REV Page 17 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx 732-A

20 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: lots & drives Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATON/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 61 2/13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 drive < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 painted lot < 20 < /13/2013 2/14/2013 stained lot < 20 < /13/2013 2/14/2013 lot < 20 < /13/2013 2/14/2013 lot < 20 < Gamma () COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 14 dpm/100 cm 2 α and 23 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 12 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.81% 38.74% 18.2% 18.1% NA SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/14/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2012 Page 4 of 13 FORM 732-A REV Page 18 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx 732-A

21 Surface Activity Calculation using Daily Background and MDA Facility Location Purpose Area III nitrogen depot pre-demolition Input data in blue cells Instrument Type Instument ID Calibration Due Date Radiation Instrument Efficiency (cpm/emission) Surface Efficiency (emission/dpm) Probe Area (cm 2 ) / /22/2013 alpha beta Daily Background Measurements Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Sample Date Description (dpm/ (dpm/ Material Type (min) (min) (cpm) (counts) (counts) 100 cm 2 (min) (min) (cpm) (counts) (counts) (Location, Object) ) 100 cm 2 ) 1 2/14/2013 B1436 Reference Location - rusty Concrete /14/2013 B1436 Reference Location - rusty Asphalt /14/2013 B1436 Reference Location - pipe Construction Sample Area Measurements Average Miscellaneous Sample Time Sample Alpha Alpha Net Sample Date Description (dpm/ (dpm/ (dpm/ (dpm/ Material Type (min) (cpm) (cpm) (cpm) 100 cm 2 ) 100 cm 2 (min) (cpm) (cpm) (cpm) (Location, Object) ) 100 cm 2 ) 100 cm 2 ) 1 2/14/2013 pipe Construction <MDA <MDA 2 2/14/2013 foundation block Concrete <MDA <MDA 3 2/14/2013 foundation block Concrete <MDA <MDA 4 2/14/2013 drive Asphalt <MDA <MDA 5 2/14/2013 Asphalt <MDA <MDA 6 2/14/2013 Asphalt <MDA <MDA 7 2/14/2013 Asphalt <MDA <MDA 8 2/14/2013 Asphalt <MDA <MDA 9 2/14/2013 Asphalt <MDA <MDA 10 2/14/2013 Asphalt <MDA <MDA 11 2/14/2013 Asphalt <MDA <MDA 12 2/14/2013 Asphalt <MDA <MDA 13 2/14/2013 Asphalt <MDA <MDA 14 2/14/2013 Asphalt <MDA <MDA 15 2/14/2013 Asphalt <MDA <MDA 16 2/14/2013 Asphalt <MDA <MDA 17 2/14/2013 Asphalt <MDA <MDA 18 2/14/2013 guard rail Construction <MDA <MDA 19 2/14/2013 post Construction <MDA <MDA 20 2/14/2013 drain collection box Concrete <MDA <MDA 21 2/14/2013 drain Asphalt <MDA <MDA 22 2/14/2013 drive Asphalt <MDA <MDA 23 2/14/2013 Asphalt <MDA <MDA 24 2/14/2013 Asphalt <MDA <MDA 25 2/14/2013 Asphalt <MDA <MDA 26 2/14/2013 Asphalt <MDA <MDA 27 2/14/2013 Asphalt <MDA <MDA 28 2/14/2013 drive Asphalt <MDA <MDA 29 2/14/2013 drive Asphalt <MDA <MDA Net Activity MDA > MDA or < MDA? Sample Time Sample Beta Beta Net Net Activity MDA > MDA or < MDA? Page 19 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx Activity using daily bkgd. page 5 of

22 Surface Activity Calculation using Daily Background and MDA Facility Location Purpose Area III nitrogen depot pre-demolition Input data in blue cells Instrument Type Instument ID Calibration Due Date Radiation Instrument Efficiency (cpm/emission) Surface Efficiency (emission/dpm) Probe Area (cm 2 ) / /22/2013 alpha beta Daily Background Measurements Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Sample Date Description (dpm/ (dpm/ Material Type (min) (min) (cpm) (counts) (counts) 100 cm 2 (min) (min) (cpm) (counts) (counts) (Location, Object) ) 100 cm 2 ) 1 2/14/2013 B1436 Reference Location - rusty Concrete /14/2013 B1436 Reference Location - rusty Asphalt /14/2013 B1436 Reference Location - pipe Construction Sample Area Measurements Average Miscellaneous Sample Time Sample Alpha Alpha Net Sample Date Description (dpm/ (dpm/ (dpm/ (dpm/ Material Type (min) (cpm) (cpm) (cpm) 100 cm 2 ) 100 cm 2 (min) (cpm) (cpm) (cpm) (Location, Object) ) 100 cm 2 ) 100 cm 2 ) 30 2/14/2013 runoff-stained drive Asphalt <MDA <MDA 31 2/14/2013 Asphalt <MDA <MDA 32 2/14/2013 Asphalt <MDA <MDA 33 2/14/2013 Asphalt <MDA <MDA 34 2/14/2013 Asphalt <MDA <MDA 35 2/14/2013 gutter Asphalt <MDA <MDA 36 2/14/2013 curb Asphalt <MDA <MDA 37 2/14/2013 drive Asphalt <MDA <MDA 38 2/14/2013 lot Asphalt <MDA <MDA 39 2/14/2013 lot Asphalt <MDA <MDA 40 2/14/2013 lot Asphalt <MDA <MDA 41 2/14/2013 lot Asphalt <MDA <MDA 42 2/14/2013 drive Asphalt <MDA <MDA 43 2/14/2013 lot Asphalt <MDA <MDA 44 2/14/2013 lot Asphalt <MDA <MDA 45 2/14/2013 drive Asphalt <MDA <MDA 46 2/14/2013 drive Asphalt <MDA <MDA 47 2/14/2013 lot Asphalt <MDA <MDA 48 2/14/2013 lot Asphalt <MDA <MDA 49 2/14/2013 drive Asphalt <MDA <MDA 50 2/14/2013 lot Asphalt <MDA <MDA 51 2/14/2013 lot Asphalt <MDA <MDA 52 2/14/2013 lot Asphalt <MDA <MDA 53 2/14/2013 lot Asphalt <MDA <MDA 54 2/14/2013 drive Asphalt <MDA <MDA 55 2/14/2013 drive Asphalt <MDA <MDA 56 2/14/2013 lot Asphalt <MDA <MDA 57 2/14/2013 lot Asphalt <MDA <MDA 58 2/14/2013 drive Asphalt <MDA <MDA Net Activity MDA > MDA or < MDA? Sample Time Sample Beta Beta Net Net Activity MDA > MDA or < MDA? Page 20 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx Activity using daily bkgd. page 6 of

23 Surface Activity Calculation using Daily Background and MDA Facility Location Purpose Area III nitrogen depot pre-demolition Input data in blue cells Instrument Type Instument ID Calibration Due Date Radiation Instrument Efficiency (cpm/emission) Surface Efficiency (emission/dpm) Probe Area (cm 2 ) / /22/2013 alpha beta Daily Background Measurements Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Sample Date Description (dpm/ (dpm/ Material Type (min) (min) (cpm) (counts) (counts) 100 cm 2 (min) (min) (cpm) (counts) (counts) (Location, Object) ) 100 cm 2 ) 1 2/14/2013 B1436 Reference Location - rusty Concrete /14/2013 B1436 Reference Location - rusty Asphalt /14/2013 B1436 Reference Location - pipe Construction Sample Area Measurements Average Miscellaneous Sample Time Sample Alpha Alpha Net Sample Date Description (dpm/ (dpm/ (dpm/ (dpm/ Material Type (min) (cpm) (cpm) (cpm) 100 cm 2 ) 100 cm 2 (min) (cpm) (cpm) (cpm) (Location, Object) ) 100 cm 2 ) 100 cm 2 ) 59 2/14/2013 drive Asphalt <MDA <MDA 60 2/14/2013 drive Asphalt <MDA <MDA 61 2/14/2013 lot Asphalt <MDA <MDA 62 2/14/2013 lot Asphalt <MDA <MDA 63 2/14/2013 drive Asphalt <MDA <MDA 64 2/14/2013 drive Asphalt <MDA <MDA 65 2/14/2013 lot Asphalt <MDA <MDA 66 2/14/2013 lot Asphalt <MDA <MDA 67 2/14/2013 drive Asphalt <MDA <MDA 68 2/14/2013 lot Asphalt <MDA <MDA 69 2/14/2013 lot Asphalt <MDA <MDA 70 2/14/2013 lot Asphalt <MDA <MDA 71 2/14/2013 painted lot Asphalt <MDA <MDA 72 2/14/2013 stained lot Asphalt <MDA <MDA 73 2/14/2013 lot Asphalt <MDA <MDA 74 2/14/2013 lot Asphalt <MDA <MDA Net Activity MDA > MDA or < MDA? Sample Time Sample Beta Beta Net Net Activity MDA > MDA or < MDA? Page 21 of 64 Area III_nitrogen depot lots & drives_732-a_ xlsx Activity using daily bkgd. page 7 of

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26 Page 24 of 64 Area III Nitrogen Depot - Lots and Drives Pre-Demolition Survey page 10 of

27 Nitrogen Depot Page 25 of 64 Area III Nitrogen Depot - Lots and Drives Pre-Demolition Survey page 11 of

28 Page 26 of 64 Area III Nitrogen Depot - Lots and Drives Pre-Demolition Survey page 12 of

29 Page 27 of 64 Area III Nitrogen Depot - Lots and Drives Pre-Demolition Survey page 13 of

30 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: pads & structures Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATION/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 1 2/15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 support column < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 light post < 20 < /15/2013 2/15/2013 post support column < 20 < /15/2013 2/15/2013 support column < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 9 dpm/100 cm 2 α and 24 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 11 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.82% 38.09% 18.2% 18.1% NA Gamma () SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/15/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 1 of 10 FORM 732-A REV Page 28 of 64 Area III_nitrogen depot_pads & structures_732-a_ rev1.xlsx 732-A

31 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: pads & structures Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATION/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 21 2/15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 bollard < 20 < /15/2013 2/15/2013 metal table < 20 < /15/2013 2/15/2013 bollard < 20 < /15/2013 2/15/2013 bollard < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 < 20 < /15/2013 2/15/2013 light post < 20 < /15/2013 2/15/2013 post support column < 20 < /15/2013 2/15/2013 light post < 20 < /15/2013 2/15/2013 post support column < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 side of building < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 flange < 20 < COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 9 dpm/100 cm 2 α and 24 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 11 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.82% 38.09% 18.2% 18.1% NA Gamma () SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/15/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 2 of 10 FORM 732-A REV Page 29 of 64 Area III_nitrogen depot_pads & structures_732-a_ rev1.xlsx 732-A

32 RADIATION SURVEY REPORT FACILITY: Area III nitrogen depot LOCATION: pads & structures Alpha Removable Beta Removable (Net) (Net) Alpha Total (Net) Beta Total (Net) LOCATION DATE DATE PURPOSE: pre-demolition survey UNITS dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm 2 µrem/h NUMBER SAMPLED MONITORED LOCATION/OBJECT DESCRIPTION LIMITS < 20 < 100 < 100 ( < 5,000 ) < 1,000 ( < 5,000 ) < MDA 41 2/15/2013 2/15/2013 side of building < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 side of building < 20 < /15/2013 2/15/2013 inside building < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 base frame < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 pipe < 20 < /15/2013 2/15/2013 support column < 20 < /15/2013 2/15/2013 stainless steel pressure reducing valve < 20 < /15/2013 2/15/2013 frame post < 20 < /15/2013 2/15/2013 support column < 20 < /15/2013 2/15/2013 pad < 20 < /15/2013 2/15/2013 valve body < 20 < Gamma () COMMENTS: MDA = minimum detectable activity INSTRUMENT Tennelec 1 Ludlum 2224 & Bicron 3 1 Tennelec (MDA = 9 dpm/100 cm 2 α and 24 dpm/100 cm 2 β) IDENTIFICATION Environmental Tennelec SN EX Ludlum 2224 with dual alpha beta probe CALIBRATION DUE Daily 8/22/2013 8/22/2013 (MDA dpm/100 cm 2 α and dpm/100 cm 2 β) BACKGROUND (cpm) to to to 11 µrem/h 3 Bicron microrem meter (MDA < 4 µrem/h above background) INSTR. EFFICIENCY 34.82% 38.09% 18.2% 18.1% NA SAMPLED BY: E. Sorrels REVIEWED BY: Phil Rutherford DATE: 2/15/2013 COUNT TIME 1 min. 1 min Scan DATE: 2/18/2013 Page 3 of 10 FORM 732-A REV Page 30 of 64 Area III_nitrogen depot_pads & structures_732-a_ rev1.xlsx 732-A

33 Surface Activity Calculation using Daily Background and MDA Facility Location Purpose Area III nitrogen depot pads & structures pre-demolition Input data in blue cells Instrument Type Instument ID Calibration Due Date Radiation Instrument Efficiency (cpm/emission) Surface Efficiency (emission/dpm) Probe Area (cm 2 ) / /22/2013 alpha beta Daily Background Measurements Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Sample Date Description (dpm/ (dpm/ Material Type (min) (min) (cpm) (counts) (counts) 100 cm 2 (min) (min) (cpm) (counts) (counts) (Location, Object) ) 100 cm 2 ) 1 2/15/2013 B1436 Reference Location - rusty Concrete /15/2013 B1436 Reference Location - rusty Asphalt /15/2013 B1436 Reference Location - pipe Construction Sample Area Measurements Average Miscellaneous Sample Time Sample Alpha Alpha Net Sample Date Description (dpm/ (dpm/ (dpm/ (dpm/ Material Type (min) (cpm) (cpm) (cpm) 100 cm 2 ) 100 cm 2 (min) (cpm) (cpm) (cpm) (Location, Object) ) 100 cm 2 ) 100 cm 2 ) 1 2/15/2013 pad Concrete <MDA <MDA 2 2/15/2013 pad Concrete <MDA <MDA 3 2/15/2013 support column Concrete <MDA <MDA 4 2/15/2013 Concrete <MDA <MDA 5 2/15/2013 Concrete <MDA <MDA 6 2/15/2013 Concrete <MDA <MDA 7 2/15/2013 Concrete <MDA <MDA 8 2/15/2013 Concrete <MDA <MDA 9 2/15/2013 light post Construction <MDA <MDA 10 2/15/2013 post support column Concrete <MDA <MDA 11 2/15/2013 support column Concrete <MDA <MDA 12 2/15/2013 Concrete <MDA <MDA 13 2/15/2013 Concrete <MDA <MDA 14 2/15/2013 Concrete <MDA <MDA 15 2/15/2013 Concrete <MDA <MDA 16 2/15/2013 Concrete <MDA <MDA 17 2/15/2013 pad Concrete <MDA <MDA 18 2/15/2013 Concrete <MDA <MDA 19 2/15/2013 Concrete <MDA <MDA 20 2/15/2013 Concrete <MDA <MDA 21 2/15/2013 Concrete <MDA <MDA 22 2/15/2013 bollard Construction <MDA <MDA 23 2/15/2013 metal table Construction <MDA <MDA 24 2/15/2013 bollard Construction <MDA <MDA 25 2/15/2013 bollard Construction <MDA <MDA 26 2/15/2013 pad Concrete <MDA <MDA 27 2/15/2013 pad Concrete <MDA <MDA 28 2/15/2013 pad Concrete <MDA <MDA 29 2/15/2013 Concrete <MDA <MDA Net Activity MDA > MDA or < MDA? Sample Time Sample Beta Beta Net Net Activity MDA > MDA or < MDA? Page 31 of 64 Area III_nitrogen depot_pads & structures_732-a_ rev1.xlsx Activity using daily bkgd. page 4 of

34 Surface Activity Calculation using Daily Background and MDA Facility Location Purpose Area III nitrogen depot pads & structures pre-demolition Input data in blue cells Instrument Type Instument ID Calibration Due Date Radiation Instrument Efficiency (cpm/emission) Surface Efficiency (emission/dpm) Probe Area (cm 2 ) / /22/2013 alpha beta Daily Background Measurements Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Time Sample Time Activity (dpm/ 100 cm 2 ) L C L D MDA Sample Date Description (dpm/ (dpm/ Material Type (min) (min) (cpm) (counts) (counts) 100 cm 2 (min) (min) (cpm) (counts) (counts) (Location, Object) ) 100 cm 2 ) 1 2/15/2013 B1436 Reference Location - rusty Concrete /15/2013 B1436 Reference Location - rusty Asphalt /15/2013 B1436 Reference Location - pipe Construction Sample Area Measurements Average Miscellaneous Sample Time Sample Alpha Alpha Net Sample Date Description (dpm/ (dpm/ (dpm/ (dpm/ Material Type (min) (cpm) (cpm) (cpm) 100 cm 2 ) 100 cm 2 (min) (cpm) (cpm) (cpm) (Location, Object) ) 100 cm 2 ) 100 cm 2 ) 30 2/15/2013 Concrete <MDA <MDA 31 2/15/2013 Concrete <MDA <MDA 32 2/15/2013 Concrete <MDA <MDA 33 2/15/2013 light post Construction <MDA <MDA 34 2/15/2013 post support column Concrete <MDA <MDA 35 2/15/2013 light post Construction <MDA <MDA 36 2/15/2013 post support column Concrete <MDA <MDA 37 2/15/2013 pad Concrete <MDA <MDA 38 2/15/2013 side of building Construction <MDA <MDA 39 2/15/2013 pad Concrete <MDA <MDA 40 2/15/2013 flange Construction <MDA <MDA 41 2/15/2013 side of building Construction <MDA <MDA 42 2/15/2013 pad Concrete <MDA <MDA 43 2/15/2013 side of building Construction <MDA <MDA 44 2/15/2013 inside building Construction <MDA <MDA 45 2/15/2013 pad Concrete <MDA <MDA 46 2/15/2013 base frame Construction <MDA <MDA 47 2/15/2013 pad Concrete <MDA <MDA 48 2/15/2013 pipe Construction <MDA <MDA 49 2/15/2013 support column Concrete <MDA <MDA 50 2/15/2013 stainless pressure red. valve Construction <MDA <MDA 51 2/15/2013 frame post Construction <MDA <MDA 52 2/15/2013 support column Concrete <MDA <MDA 53 2/15/2013 pad Concrete <MDA <MDA 54 2/15/2013 valve body Construction <MDA <MDA Net Activity MDA > MDA or < MDA? Sample Time Sample Beta Beta Net Net Activity MDA > MDA or < MDA? Page 32 of 64 Area III_nitrogen depot_pads & structures_732-a_ rev1.xlsx Activity using daily bkgd. page 5 of

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37 Page 35 of 64 Area III Nitrogen Depot - Pads and Structures Pre-Demolition Survey page 8 of

38 Page 36 of 64 Area III Nitrogen Depot - Pads and Structures Pre-Demolition Survey page 9 of

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40 Page 38 of 64 Area III Nitrogen Depot - Pads and Structures Pre-Demolition Survey page 10 of

41 In-Situ Concrete, Asphalt, and Roadbase Characterization Report Page 39 of 64

42 The Boeing Company 5800 Woolsey Canyon Road Simi Valley, California SSFL Area 3 Nitrogen Depot In-Situ Concrete, Roadbase, and Asphalt Waste Characterization Report March 2013 Page 40 of 64

43 Contents Introduction 1 Concrete Characterization 1 Roadbase Characterization 2 Asphalt Characterization 3 Concrete Recycling 4 Appendices Appendix A: Waste Characterization Analytical Results 6 Table 1 Nitrogen Depot Waste Characterization Analyses 7 Appendix B: Sample Collection Points and Results 8 Figure 1 Nitrogen Depot Waste Characterization Orientation Map 9 Figure 2 Nitrogen Depot Waste Characterization Results 10 Appendix C: Waste Dispositions 11 Figure 3 Nitrogen Depot Concrete Disposition 12 Figure 4 Nitrogen Depot Roadbase Disposition 13 Figure 5 Nitrogen Depot Asphalt Disposition 14 Page 41 of 64 i

44 Introduction Nitrogen Depot In-Situ Concrete, Roadbase, and Asphalt Waste Characterization Report The Nitrogen Depot site has been variously called the "Linde Plant," the "Big Three Pipeline, and the "Praxair Plant." Historical references indicate that the site has been continuously used for gaseous Nitrogen supply from before 1965 to A liquid Nitrogen gas generator plant was operated by Linde Air Products, which leased the Nitrogen Depot site and provided gaseous Nitrogen to SSFL during the early years of the SSFL facility. In 1965, planning was in work by Rocketdyne, Atomics International, and the Big Three Industrial Gas and Equipment Company for installation of a pipeline to distribute gaseous Nitrogen produced at a new Simi Valley plant. The pipeline was apparently completed in 1967 when Linde s lease expired. At some point, Praxair installed its own Nitrogen supply plant that included permanently mounted heat exchangers and 26,000 gallons of liquid Nitrogen storage. The most recent operation to be in service at the Nitrogen Depot site was a supplier-owned temporary liquid-to-gas Nitrogen conversion plant. The supplier-owned equipment was removed at the end of 2012 by the supplier. Available records and the recollections of former employees indicate that the Nitrogen Depot has primarily hosted equipment and operations with low-contamination risk throughout its history. Some former employees have recounted memories of compressor banks at the site, which may contribute to lubricant impacts in the surrounding area. Currently existing evidence at the site, including cut-off mounting studs in one of the concrete pads, corrosion stains, and remnant piping supports this possibility. No formal records indicating usage of persistent chemicals were located, and the hazardous materials inventory in the Business Plan lists only common calibration gases, none of which would leave persisting chemical impacts. In preparing for demolition of the Nitrogen Depot, characterization of materials requiring recycling or disposal was conducted to facilitate management of generated wastes. Characterization of potential waste from the Nitrogen Depot demolition project involved: 1) A review of existing records related to laboratory analyses from environmental sampling in the area, as well as historical documents pertaining to the occupancy and activities within project boundaries. 2) Visual inspection of concrete and other potential wastes at the project site. 3) Sampling and laboratory analysis of concrete and interior wall surfaces that will constitute discarded wastes. Figures showing the Nitrogen Depot waste sample collection points and the resulting analytical results are presented in Appendix B: Sample Collection Points and Results." Concrete Characterization A comprehensive visual inspection was conducted of concrete surfaces present at the Nitrogen Depot site. A total of eight sample collection points were identified. Most of the samples were collected from areas that were identified based on indications of concrete impacts such as staining or surface degradation. One sample was collected from a randomly identified location. All concrete samples were analyzed for CAM 17 Metals, Polychlorinated Biphenyls (PCB), and Semi-Volatile Organic Compounds (SVOC). Petroleum Hydrocarbons were not analyzed because the concrete surfaces were well scoured by weather. Analytical results for the concrete Page 42 of 64 Page 1 of 14

45 samples collected in the low-bay are presented in Appendix A: Waste Characterization Analytical Results. Chromium in five of the eight samples was found to exceed the 10 X STLC thresholds of 50 ppm, while one of those also exceeded the 20X TCLP threshold of 100 ppm. TCLP and STLC tests were performed to determine the degree to which contaminants were mobile. The total concentrations detected and subsequent leachate test results follow: Total Chromium Detected TCLP Result STLC Result 230 ppm ND ppm N/A ppm N/A ppm N/A ppm N/A 1.6 None of the leachate test results exceeded the TCLP or STLC limits, both of which are 5 mg/l. Other than Chromium, the next most significant detection of a Regulated Metal was Selenium, with a maximum concentration of 9.8 ppm, compared to the 10 X STLC threshold of 10 ppm. No PCBs were detected, despite acceptably low Method Detection Limits (MDL) at the laboratory. SVOC detections were limited to Isophorone at a maximum concentration of 3.4 ppm, Benzoic Acid at 0.17 ppm and Bis(2-ethylhexyl)phthalate at 0.17 ppm. Disposition Based upon the analytical results discussed above and the concrete recycling explanation found later in this document, the Nitrogen Depot concrete will be managed as Non-Hazardous Waste. 1) All concrete, with the exception of the northernmost pad, is suitable for recycling. 2) The concrete from the northernmost pad, which exceeds the U.S. EPA Region IX Preliminary Remediation Goal (as explained in the concrete recycling explanation found later in this document) of 210 ppm for total Chromium, will be transported to a Class 3 landfill for disposal. Concrete dispositions are presented in Appendix C: Waste Dispositions. Roadbase A considerable area of the Nitrogen Depot is surfaced with asphalt pavement. Consequently, a significant volume of base material is also associated with the site. A total of nine samples were collected. Of these, six were collected from randomly identified locations. Three additional sample collection locations were identified based on the presence of significant cracking and evidence of staining or water collection. The roadbase samples were analyzed for Petroleum Hydrocarbons, CAM 17 Metals, PCBs, SVOCs, VOCs, ph, and 96-Hour Acute Aquatic Toxicity LD50. Analytical results are presented in Appendix A: Waste Characterization Analytical Results. Page 43 of 64 Page 2 of 14

46 According to analytical results, the roadbase exceeded a regulatory threshold in one sample. Chromium was detected at 58 ppm, exceeding the 10 X STLC threshold of 50 ppm. Among the remaining Regulated Metals, the most significant detection was Lead at a concentration of 29 ppm, compared to the 10 X STLC threshold of 50 ppm. Trace concentrations of PCBs were detected in the five of the samples. Aroclor 1254 was detected at concentrations ranging from ppm to ppm, below the 10 X STLC threshold and TSCA action limit of 50 ppm. No SVOCs were detected. However, an elevated concentration of 2,4-Dinitrotoluene, a RCRA regulated compound, was detected in asphalt located at the southeast corner of the Nitrogen Depot paved area. The nearest roadbase sample collected in this area was approximately 50 feet to the northwest and resulted in non-detect for 2,4-Dinitrotoluene. A MDL of 0.16 ppm applied to this sample, which is below the 20 X TCLP threshold of 2.6 ppm. The asphalt detection was observed in the regulated SVOC TCLP analyses that are routinely conducted on asphalt. These analyses are conducted to assure that matrix interference induced elevated MDLs do not obscure the presence of hazardous concentrations of regulated SVOCs. As the asphalt in the impacted area is highly cracked and the TCLP results indicate that the 2,4- Dinitrotoluene is mobile, the roadbase has also been determined to be impacted. All samples passed the Acute Aquatic Toxicity test. Disposition Based upon the analytical results and the discussion regarding 2,4-Dintrotoluene presented above, the roadbase at the Nitrogen Depot will be managed as follows: 1) All roadbase, with the exception of material in the southeast corner as described below, will be managed as Non-Hazardous Waste with disposal at a Class 3 landfill. 2) All of the roadbase in the southeast corner of the site, extending from the extreme southeast end of the truck turnaround to 40 feet to the northwest, will be managed as RCRA Hazardous Waste for 2,4-Dinitrotoluene and transported to a Class 1 landfill for disposal. The roadbase dispositions are presented in Appendix C: Waste Dispositions. Asphalt Asphalt pavement at the Nitrogen Depot is generally in slightly less than fair condition, with significant cracking but only moderate weathering. Staining and other suspicious surficial aspects are present, they are not numerous. Significant anomalies were sampled, with collection of six asphalt samples. Two of the samples were associated with indications of water accumulation and sediment settling. One sample involved white painted lines on the asphalt, and in another case, light colored staining leading to a stormwater drain was sampled. A final sample was collected in an area where a black substance was deposited on the asphalt surface. The samples were analyzed for CAM 17 Metals, total PCBs, STLC PCBs, total SVOCs, and TCLP SVOCs. According to analytical results, no Regulated Metals exceeded regulatory thresholds or limits. The most significant Metal detection was Chromium at 16 ppm. This is well below the 10 X STLC threshold of 50 ppm. No PCBs were detected, either in terms of total concentrations or STLC leachate. No SVOCs as total concentrations were detected, but this is not unexpected with asphalt considering the elevated MDLs ranging from 12 ppm to 250 ppm, depending upon the analyte. For this reason, TCLP analyses are performed routinely when asphalt is tested, and these results were also non-detect in all but one case, despite acceptably low MDLs below Page 44 of 64 Page 3 of 14

47 regulatory limits. One TCLP analysis did yield a detection for 2,4-Dinitrotoluene at 0.14 ppm. This exceeds the RCRA TCLP limit of 0.13 ppm. Disposition Based upon the analytical results presented above, the asphalt at the Nitrogen Depot will be managed as follows: 1) All asphalt, with the exception of material in the southeast corner as described below, will be managed as Non-Hazardous Waste and is suitable for recycling. 2) All of the asphalt in the southeast corner of the site, extending from the extreme southeast end of the truck turnaround to 40 feet to the northwest, will be managed as RCRA Hazardous Waste for 2,4-Dinitrotoluene and transported to a Class 1 landfill for disposal. The asphalt dispositions are presented in Appendix C: Waste Dispositions. Concrete Recycling An attempt is made to recycle as much SSFL concrete as possible in compliance with governmental landfill waste diversion programs, but only when the material is clearly suitable for this purpose. Although concrete must be non-hazardous to be eligible for recycling, regulations further stipulate that no soluble pollutants can be present at concentrations in excess of applicable water quality objectives. Boeing SSFL generally employs U.S. EPA Region IX Preliminary residential soil Remediation Goals (PRG) for the purpose of determining whether or not non-hazardous waste concrete is suitable for recycling. Although the PRGs were not developed for this purpose, no numerical standards exist that specifically address recycling requirements. In this context, the PRGs do provide an indication of soil safety as it relates to human and environmental health. Recycled concrete from SSFL is typically transformed into Miscellaneous Base for roads and similar applications. This recycled product is not nearly as finely divided as soil, any concrete impacts are likely to exhibit a greater degree of adhesion and/or pore containment than those adsorbed to soil, and the product is used in situations where it is placed beneath a generally protective surface such as pavement or a concrete pad. For these reasons, when PRGs are applied to concrete recycling, the result is far more conservative than originally intended where environmental leaching and human exposure are unrestrained. PRGs are directly applied to all detected impacts to concrete when determining whether it is suitable for recycling, with the exception of PCBs, Arsenic, and impacts that are not addressed by PRGs. A total summative Aroclor limit of 1 ppm has been set for PCBs based on SSFL recycled concrete usage and penetration data. Concrete is also determined to be unsuitable for recycling when it exhibits an Arsenic concentration of 10 ppm or greater, based on SSFL recycled concrete usage, penetration data, and background Arsenic studies in California. Page 45 of 64 Page 4 of 14

48 Appendices Page 5 of 14 Page 46 of 64

49 Appendix A Waste Characterization Analytical Results Page 47 of 64 Page 6 of 14

50 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 DRO (C10-C24) c 100 e 370 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A EFH (C10-C40) c 1000 e 83 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A ORO (C25-C40) c 1000 e 100 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A GRO (C6-C12) c 100 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Antimony a NA/150 b 31 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Arsenic a 100/50 b ND ND ND ND 0.93 ND Barium a 2000/1000 b Beryllium a NA/7.5 b 150 ND ND ND ND ND ND ND ND ND ND ND ND ND ND Cadmium a 20/10 b 37 ND ND ND 6.4 ND ND ND 2.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chromium a 100/50 b Cr TCLP/STLC 5/5 ND / 0.50 NA / 0.44 NA / 0.33 NA / 1.6 NA / Cobalt a NA/800 b Copper a NA/250 b Lead a 100/50 b Mercury a 4/2 b ND ND ND ND ND ND Molybdenum a NA/3500 b ND ND ND 0.42 ND ND ND 0.3 ND 0.37 ND ND ND ND ND ND ND 0.72 Nickel a NA/200 b Selenium a 20/10 b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Silver a 100/50 b 390 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Thallium a NA/70 b 5.2 ND 1 ND ND ND ND ND ND Vanadium a NA/240 b Zinc a NA/2500 b Aroclor 1016 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND Aroclor 1221 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND Aroclor 1232 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Page 48 of 64 Page 7 (1 of 8)

51 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 STLC Aroclor ND ND ND ND ND ND Aroclor 1242 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND Aroclor 1248 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND Aroclor 1254 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND Aroclor 1260 a NA/50 b 0.22 d 50 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND STLC Aroclor ND ND ND ND ND ND 1,2,4-Trichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,2-Diphenylhydrazine (as Azobenzene) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,3-Dinitrobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1,4-Dichlorobenzene a 150/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP 1,4-Dichlorobenzene 7.5 ND ND ND ND ND ND 1-Naphthylamine ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4,5-Trichlorophenol a 8000/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP 2,4,5-Trichlorophenol 400 ND ND ND ND ND ND 2,4,6-Trichlorophenol a 40/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP 2,4,6-Trichlorophenol 2 ND ND ND ND ND ND 2,4-Dichlorophenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4-Dimethylphenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4-Dinitrophenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2,4-Dinitrotoluene a 2.6/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP 2,4-Dinitrotoluene 0.13 ND ND ND ND ND ,6-Dinitrotoluene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Page 49 of 64 Page 7 (2 of 8)

52 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 2-Chloronaphthalene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Chlorophenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Methylnaphthalene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Naphthylamine ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Nitroaniline ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2-Nitrophenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3,3'-Dichlorobenzidine f 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP 3,3'-Dichlorobenzidine NA ND ND ND ND ND ND 3-Nitroaniline ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4,6-Dinitro-2- methylphenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Aminobiphenyl ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Bromophenyl phenyl ether ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Chloro-3-methylphenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Chloroaniline ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Chlorophenyl phenyl ether ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Nitroaniline ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4-Nitrophenol ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Acenaphthene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Acenaphthylene b 3700 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Aniline ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Anthracene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzidine f 10 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Benzidine NA ND ND ND ND ND ND Benzo[a]anthracene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzo[a]pyrene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Page 50 of 64 Page 7 (3 of 8)

53 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 Benzo[b]fluoranthene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzo[g,h,i]perylene b NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzo[k]fluoranthene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzoic acid b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Benzyl alcohol b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND bis (2-chloroisopropyl) ether ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Bis(2-chloroethoxy)methane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Bis(2-chloroethyl)ether ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Bis(2-ethylhexyl) phthalate b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Butyl benzyl phthalate b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Chrysene b 62 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Dibenz(a,h)anthracene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Dibenzofuran b 150 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Diethyl phthalate b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Dimethyl aminoazobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Dimethyl phthalate ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Di-n-butyl phthalate b 6100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Di-n-octyl phthalate b 2400 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluoranthene b 2300 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Fluorene b 2700 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Hexachlorobenzene a 2.6/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Hexachlorobenzene 0.13 ND ND ND ND ND ND Hexachlorobutadiene a 10/NA b 6.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Hexachlorobutadiene 0.5 ND ND ND ND ND ND Page 51 of 64 Page 7 (4 of 8)

54 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 Hexachlorocyclopentadiene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Hexachloroethane a 60/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Hexachloroethane 3 ND ND ND ND ND ND Indeno[1,2,3-cd]pyrene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Isophorone b 510 ND ND 0.28 ND 3.4 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Kepone a NA/21 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Naphthalene b 1.7 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Nitrobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Nitrobenzene 2 ND ND ND ND ND ND N-Nitrosodimethylamine ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP N-Nitrosodimethylamine NA ND ND ND ND ND ND ND ND ND N-Nitrosodi-npropylamine ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND N-Nitrosodiphenylamine ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND o-cresols (2- Methylphenol) a 4000/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP o-cresols 200 ND ND ND ND ND ND p-cresols (4- Methylphenol) a 4000/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP p-cresols 200 ND ND ND ND ND ND Pentachlorophenol a 2000/17 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Pentachlorophenol 100 ND ND ND ND ND ND Phenanthrene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Phenol b ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Pyrene b 2300 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Pyridine a 100/NA ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND TCLP Pyridine 5 ND ND ND ND ND ND Total Cresols a 4000/NA b 3100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Page 52 of 64 Page 7 (5 of 8)

55 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 TCLP Total Cresols 200 ND ND ND ND ND ND 1,1,1,2-Tetrachloroethane b 3.2 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1,1-Trichloroethane b 1200 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1,2,2-Tetrachloroethane b 0.41 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1,2-Trichloroethane b 0.73 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1-Dichloroethane b 2.8 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1-Dichloroethene a 14/NA b 120 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,1-Dichloropropene N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2,3-Trichlorobenzene N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2,3-Trichloropropane b 52 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2,4-Trichlorobenzene b 62 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2,4-Trimethylbenzene b 52 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2-Dibromo-3- Chloropropane b 0.03 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2-Dibromoethane (EDB) b N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2-Dichlorobenzene b 600 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2-Dichloroethane a 10/NA b 0.28 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,2-Dichloropropane b 0.34 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,3,5-Trimethylbenzene b 21 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,3-Dichlorobenzene b 530 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,3-Dichloropropane b 100 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 1,4-Dichlorobenzene a 150/NA b 3.4 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 2,2-Dichloropropane N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 2-Butanone (MEK) a 4000/NA b 2.2 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 2-Chlorotoluene b 160 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Page 53 of 64 Page 7 (6 of 8)

56 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 2-Hexanone N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 4-Chlorotoluene b 160 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A 4-Methyl-2-pentanone (MIBK) N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Acetone b N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Benzene a 10/NA b 0.64 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Bromobenzene b 28 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Bromochloromethane N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Bromodichloromethane b 0.82 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Bromoform b 62 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Bromomethane b 3.9 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Carbon disulfide b 360 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Carbon tetrachloride a 10/NA b 0.25 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Chlorobenzene a 2000/NA b 150 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Chloroethane b 3 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Chloroform a 120/NA b 0.94 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Chloromethane b 47 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A cis-1,2-dichloroethene b 43 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A cis-1,3-dichloropropene b 0.78 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Dibromochloromethane b 1.1 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Dibromomethane N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Dichlorodifluoromethane b 94 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Ethylbenzene b 400 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Hexachlorobutadiene a 10/NA b 6.2 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Isopropylbenzene N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A m,p-xylene b 270 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Methylene Chloride b 9.1 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Methyl-t-Butyl Ether b 32 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Page 54 of 64 Page 7 (7 of 8)

57 Table 1 Nitrogen Depot Waste Characterization Analyses CONCRETE ROADBASE ASPHALT Analyte All units ppm unless specified otherwise Threshold Values: a 20XTCLP/10XSTLC, b PRG, c LNDFL, d TSCA, e ESL (SFRWQCB), f Other CCR Title _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _CNCR_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _RB_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S _ASPH_S6 Naphthalene b 1.7 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A n-butylbenzene b 240 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A N-Propylbenzene b 240 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A o-xylene b 270 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A p-isopropyltoluene N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A sec-butylbenzene b 220 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Styrene b 1700 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A tert-butylbenzene b 390 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Tetrachloroethene a 14/NA b 0.48 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Toluene b 520 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A trans-1,2-dichloroethene b 69 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A trans-1,3- Dichloropropene b 0.78 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Trichloroethene a 10/2040 b 2.9 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Trichlorofluoromethane b 390 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Vinyl acetate N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A Vinyl chloride a 4/NA b f 10 N/A N/A N/A N/A N/A N/A N/A N/A ND ND ND ND ND ND ND ND ND N/A N/A N/A N/A N/A N/A ph f<=2 or >=12.5 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 96-Hour Acute Aquatic Toxicity LC50 f Pass/Fail N/A N/A N/A N/A N/A N/A N/A N/A Pass Pass Pass Pass Pass Pass Pass Pass Pass N/A N/A N/A N/A N/A N/A Page 55 of 64 Page 7 (8 of 8)

58 Appendix B Sample Collection Points and Results Page 56 of 64 Page 8 of 14

59 FIGURE 1 NITROGEN DEPOT WASTE CHARACTERIZATION ORIENTATION MAP Page 57 of 64 Page 9 of 14